Auto sync: 2025-11-08 22:46:02 (10023 files changed)
M .sessions/nvim_config.vim M .task/backlog.data M .task/completed.data M .task/pending.data M .task/undo.data A Class_Work/nuce2101/exam2/2101_Exam_2_2025.pdf A "Class_Work/nuce2101/exam2/Fundamental Kinetics Ideas_Rev_17.pdf" A "Class_Work/nuce2101/exam2/Simplified Parallel Coupled Reactors Rev 8.pdf"
This commit is contained in:
parent
816231efee
commit
df8f28fce3
@ -15,12 +15,12 @@ else
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endif
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badd +44 custom/configs/lspconfig.lua
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badd +1 custom/taskwarrior.lua
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badd +11 custom/init.lua
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badd +16 custom/init.lua
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badd +203 ~/.config/nvim/lua/custom/plugins.lua
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badd +117 custom/journal.lua
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badd +6 custom/journal.lua
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argglobal
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%argdel
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edit custom/journal.lua
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edit custom/init.lua
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let s:save_splitbelow = &splitbelow
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let s:save_splitright = &splitright
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set splitbelow splitright
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@ -37,8 +37,8 @@ set winminheight=0
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set winheight=1
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set winminwidth=0
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set winwidth=1
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exe 'vert 1resize ' . ((&columns * 87 + 87) / 174)
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exe 'vert 2resize ' . ((&columns * 86 + 87) / 174)
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exe 'vert 1resize ' . ((&columns * 82 + 82) / 164)
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exe 'vert 2resize ' . ((&columns * 81 + 82) / 164)
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argglobal
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balt ~/.config/nvim/lua/custom/plugins.lua
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setlocal foldmethod=manual
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@ -51,11 +51,11 @@ setlocal foldnestmax=20
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setlocal foldenable
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silent! normal! zE
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let &fdl = &fdl
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let s:l = 3 - ((2 * winheight(0) + 32) / 64)
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let s:l = 7 - ((6 * winheight(0) + 32) / 64)
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if s:l < 1 | let s:l = 1 | endif
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keepjumps exe s:l
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normal! zt
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keepjumps 3
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keepjumps 7
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normal! 0
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wincmd w
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argglobal
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@ -81,8 +81,8 @@ normal! zt
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keepjumps 280
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normal! 09|
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wincmd w
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exe 'vert 1resize ' . ((&columns * 87 + 87) / 174)
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exe 'vert 2resize ' . ((&columns * 86 + 87) / 174)
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exe 'vert 1resize ' . ((&columns * 82 + 82) / 164)
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exe 'vert 2resize ' . ((&columns * 81 + 82) / 164)
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tabnext 1
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if exists('s:wipebuf') && len(win_findbuf(s:wipebuf)) == 0 && getbufvar(s:wipebuf, '&buftype') isnot# 'terminal'
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silent exe 'bwipe ' . s:wipebuf
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@ -98,7 +98,6 @@ if filereadable(s:sx)
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endif
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let &g:so = s:so_save | let &g:siso = s:siso_save
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set hlsearch
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nohlsearch
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doautoall SessionLoadPost
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unlet SessionLoad
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" vim: set ft=vim :
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@ -263,3 +263,7 @@
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{"description":"Find Schmidt and talk to him about Howie Choset","due":"20251112T050000Z","entry":"20251029T152847Z","modified":"20251106T234604Z","project":"Chair-Search.outreach","status":"pending","uuid":"eed48bbf-4e70-4057-9c35-1f960dc1ed33","wait":"20251103T050000Z"}
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{"description":"Apply for INL Internship","due":"20251110T050000Z","end":"20251107T202016Z","entry":"20251104T182129Z","modified":"20251107T202016Z","project":"Internship","status":"completed","uuid":"95cfe200-a13e-491f-8f11-6106ef66a55d"}
|
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{"description":"Submit INL Application on Taleo","end":"20251107T202059Z","entry":"20251103T170924Z","modified":"20251107T202059Z","project":"Internship","status":"completed","uuid":"571eaf72-995c-4e76-9983-a68799c02946","tags":["NEXT"],"depends":["95cfe200-a13e-491f-8f11-6106ef66a55d"]}
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{"description":"Problem 6","entry":"20251105T160720Z","modified":"20251108T195558Z","project":"class.NUCE2101.Exam2","start":"20251108T195558Z","status":"pending","uuid":"fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c"}
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{"description":"Problem 6","end":"20251108T202639Z","entry":"20251105T160720Z","modified":"20251108T202639Z","project":"class.NUCE2101.Exam2","status":"completed","uuid":"fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c"}
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{"description":"Problem 3","entry":"20251105T160709Z","modified":"20251108T202716Z","project":"class.NUCE2101.Exam2","start":"20251108T202716Z","status":"pending","uuid":"5429f3ab-06f9-4df3-909d-ba5920169000"}
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{"description":"Problem 3","end":"20251108T225056Z","entry":"20251105T160709Z","modified":"20251108T225056Z","project":"class.NUCE2101.Exam2","status":"completed","uuid":"5429f3ab-06f9-4df3-909d-ba5920169000"}
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@ -1,3 +1,5 @@
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[description:"Problem 3" end:"1762642256" entry:"1762358829" modified:"1762642256" project:"class.NUCE2101.Exam2" status:"completed" uuid:"5429f3ab-06f9-4df3-909d-ba5920169000"]
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[description:"Problem 6" end:"1762633599" entry:"1762358840" modified:"1762633599" project:"class.NUCE2101.Exam2" status:"completed" uuid:"fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c"]
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[dep_95cfe200-a13e-491f-8f11-6106ef66a55d:"x" depends:"95cfe200-a13e-491f-8f11-6106ef66a55d" description:"Submit INL Application on Taleo" end:"1762546859" entry:"1762189764" modified:"1762546859" project:"Internship" status:"completed" tags:"NEXT" tags_NEXT:"x" uuid:"571eaf72-995c-4e76-9983-a68799c02946"]
|
||||
[description:"Apply for INL Internship" due:"1762750800" end:"1762546816" entry:"1762280489" modified:"1762546816" project:"Internship" status:"completed" uuid:"95cfe200-a13e-491f-8f11-6106ef66a55d"]
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[dep_95cfe200-a13e-491f-8f11-6106ef66a55d:"x" depends:"95cfe200-a13e-491f-8f11-6106ef66a55d" description:"Write cover letter for INL Application+NEXT" end:"1762472402" entry:"1762189744" modified:"1762472402" project:"Internship" status:"completed" uuid:"a2deb6f0-887c-4ba9-b090-f06e95c3b998"]
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@ -60,8 +60,6 @@
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[description:"Review Simeonas comments and implement them\n" entry:"1762182404" modified:"1762182404" project:"ERLM" status:"pending" tags:"editing" tags_editing:"x" uuid:"4f55e685-ed77-4533-9865-2ebe64b80632"]
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[description:"Problem 1" entry:"1762358812" modified:"1762358812" project:"class.NUCE2101.Exam2" status:"pending" uuid:"a2c8dc0b-e889-451a-a8c0-00a3ae9c5efd"]
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[description:"Problem 2" entry:"1762358826" modified:"1762358826" project:"class.NUCE2101.Exam2" status:"pending" uuid:"5c30cc0b-222a-4975-a62b-9de8a78ab813"]
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[description:"Problem 3" entry:"1762358829" modified:"1762358829" project:"class.NUCE2101.Exam2" status:"pending" uuid:"5429f3ab-06f9-4df3-909d-ba5920169000"]
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[description:"Problem 4" entry:"1762358831" modified:"1762358831" project:"class.NUCE2101.Exam2" status:"pending" uuid:"c39c9349-74b7-4a5c-8e75-27d341488c14"]
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[description:"Problem 5" entry:"1762358836" modified:"1762358836" project:"class.NUCE2101.Exam2" status:"pending" uuid:"7bdde787-042d-4b9b-b2de-19e11b40d032"]
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[description:"Problem 6" entry:"1762358840" modified:"1762358840" project:"class.NUCE2101.Exam2" status:"pending" uuid:"fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c"]
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[dep_5429f3ab-06f9-4df3-909d-ba5920169000:"x" dep_5c30cc0b-222a-4975-a62b-9de8a78ab813:"x" dep_7bdde787-042d-4b9b-b2de-19e11b40d032:"x" dep_a2c8dc0b-e889-451a-a8c0-00a3ae9c5efd:"x" dep_c39c9349-74b7-4a5c-8e75-27d341488c14:"x" dep_fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c:"x" depends:"5429f3ab-06f9-4df3-909d-ba5920169000,5c30cc0b-222a-4975-a62b-9de8a78ab813,7bdde787-042d-4b9b-b2de-19e11b40d032,a2c8dc0b-e889-451a-a8c0-00a3ae9c5efd,c39c9349-74b7-4a5c-8e75-27d341488c14,fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c" description:"Submit Exam 2" due:"1762750800" entry:"1762358874" modified:"1762358874" project:"class.NUCE2101.Exam2" status:"pending" uuid:"ab2e56e4-4d9f-4e85-b40d-6f312ac17332"]
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@ -939,3 +939,19 @@ time 1762546859
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old [dep_95cfe200-a13e-491f-8f11-6106ef66a55d:"x" depends:"95cfe200-a13e-491f-8f11-6106ef66a55d" description:"Submit INL Application on Taleo" entry:"1762189764" modified:"1762472420" project:"Internship" status:"pending" tags:"NEXT" tags_NEXT:"x" uuid:"571eaf72-995c-4e76-9983-a68799c02946"]
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new [dep_95cfe200-a13e-491f-8f11-6106ef66a55d:"x" depends:"95cfe200-a13e-491f-8f11-6106ef66a55d" description:"Submit INL Application on Taleo" end:"1762546859" entry:"1762189764" modified:"1762546859" project:"Internship" status:"completed" tags:"NEXT" tags_NEXT:"x" uuid:"571eaf72-995c-4e76-9983-a68799c02946"]
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---
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time 1762631758
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old [description:"Problem 6" entry:"1762358840" modified:"1762358840" project:"class.NUCE2101.Exam2" status:"pending" uuid:"fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c"]
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new [description:"Problem 6" entry:"1762358840" modified:"1762631758" project:"class.NUCE2101.Exam2" start:"1762631758" status:"pending" uuid:"fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c"]
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---
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time 1762633599
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old [description:"Problem 6" entry:"1762358840" modified:"1762631758" project:"class.NUCE2101.Exam2" start:"1762631758" status:"pending" uuid:"fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c"]
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new [description:"Problem 6" end:"1762633599" entry:"1762358840" modified:"1762633599" project:"class.NUCE2101.Exam2" status:"completed" uuid:"fcbcec80-81e1-4a7d-9ea8-d8b1c6f9737c"]
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---
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time 1762633636
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old [description:"Problem 3" entry:"1762358829" modified:"1762358829" project:"class.NUCE2101.Exam2" status:"pending" uuid:"5429f3ab-06f9-4df3-909d-ba5920169000"]
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new [description:"Problem 3" entry:"1762358829" modified:"1762633636" project:"class.NUCE2101.Exam2" start:"1762633636" status:"pending" uuid:"5429f3ab-06f9-4df3-909d-ba5920169000"]
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---
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time 1762642256
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old [description:"Problem 3" entry:"1762358829" modified:"1762633636" project:"class.NUCE2101.Exam2" start:"1762633636" status:"pending" uuid:"5429f3ab-06f9-4df3-909d-ba5920169000"]
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new [description:"Problem 3" end:"1762642256" entry:"1762358829" modified:"1762642256" project:"class.NUCE2101.Exam2" status:"completed" uuid:"5429f3ab-06f9-4df3-909d-ba5920169000"]
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---
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BIN
Class_Work/nuce2101/exam2/2101_Exam_2_2025.pdf
Normal file
BIN
Class_Work/nuce2101/exam2/2101_Exam_2_2025.pdf
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BIN
Class_Work/nuce2101/exam2/Fundamental Kinetics Ideas_Rev_17.pdf
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BIN
Class_Work/nuce2101/exam2/Fundamental Kinetics Ideas_Rev_17.pdf
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Binary file not shown.
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BIN
Class_Work/nuce2101/exam2/Steam Plant Transients rev 2021_15.pdf
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BIN
Class_Work/nuce2101/exam2/Steam Plant Transients rev 2021_15.pdf
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Binary file not shown.
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98
Class_Work/nuce2101/exam2/latex/dane_proposal_format.cls
Normal file
98
Class_Work/nuce2101/exam2/latex/dane_proposal_format.cls
Normal file
@ -0,0 +1,98 @@
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\NeedsTeXFormat{LaTeX2e}
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\ProvidesClass{prayer_circle}[2025/09/02 Custom class for academic documents]
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% Pass options and load base class
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\PassOptionsToClass{12pt,titlepage}{article}
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\LoadClass{article}
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% Core packages
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\RequirePackage[utf8]{inputenc}
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\RequirePackage[margin=1.0in]{geometry}
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\RequirePackage[hyphens]{url}
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% Font selection (NSF compliant)
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% Uncomment ONE of the following font options:
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\RequirePackage{mathptmx} % Times New Roman (11pt minimum)
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% \RequirePackage{mathpazo} % Palatino (10pt minimum)
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% \RequirePackage{helvet}\renewcommand{\familydefault}{\sfdefault} % Arial (10pt minimum)
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% Default: Computer Modern (11pt minimum) - current 12pt is compliant
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% Document formatting
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\RequirePackage[small,compact]{titlesec}
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\RequirePackage{setspace}
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\RequirePackage{datetime}
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\RequirePackage{cite}
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\RequirePackage{tocbibind}
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% Set spacing and numbering
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\singlespacing
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\setcounter{secnumdepth}{3}
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\setcounter{tocdepth}{5}
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\bibliographystyle{unsrt}
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% Graphics and figures
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\RequirePackage{graphicx}
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\RequirePackage{pdfpages}
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\RequirePackage{rotating}
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% \RequirePackage[nolists,nomarkers]{endfloat} % Commented out - uncomment if needed
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|
||||
% TikZ libraries
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||||
\RequirePackage{tikz}
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||||
\usetikzlibrary{%
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positioning,%
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||||
shapes,%
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||||
arrows,%
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||||
graphs,%
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||||
calc,%
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||||
chains,%
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decorations.markings,%
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shadows,%
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shapes.arrows,%
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arrows.meta%
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}
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||||
% Standalone documents
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||||
\RequirePackage{standalone}
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||||
|
||||
% Tables
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||||
\RequirePackage{booktabs}
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||||
\RequirePackage{tabularx}
|
||||
\RequirePackage{makecell}
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||||
\RequirePackage{dcolumn}
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||||
\RequirePackage{multirow}
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\RequirePackage{lscape}
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\setlength{\belowcaptionskip}{\abovecaptionskip}
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||||
% Mathematics
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||||
\RequirePackage{amsmath}
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\RequirePackage{amssymb}
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% Lists and code
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\RequirePackage[inline]{enumitem}
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\RequirePackage{listings}
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\setlist{noitemsep,listparindent=24pt}
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% Specialized packages
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\RequirePackage{pgfgantt}
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% Custom lengths
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||||
\newlength{\figurewidth}
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||||
\setlength{\figurewidth}{0.9\textwidth}
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||||
\newlength{\figureheight}
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||||
\setlength{\figureheight}{0.75\textheight}
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||||
|
||||
% Custom commands and counters
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||||
\newcounter{task}
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\setcounter{task}{0}
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\newcommand{\task}[2]{%
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\stepcounter{task}%
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||||
\subsubsection{Task \arabic{task}: #1}%
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||||
\begin{quote}%
|
||||
\textit{#2}%
|
||||
\end{quote}%
|
||||
}
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||||
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||||
\newcommand{\emphitem}[1]{\item \emph{#1:}}
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4
Class_Work/nuce2101/exam2/latex/main.aux
Normal file
4
Class_Work/nuce2101/exam2/latex/main.aux
Normal file
@ -0,0 +1,4 @@
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||||
\relax
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||||
\bibstyle{unsrt}
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||||
\providecommand \oddpage@label [2]{}
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||||
\gdef \@abspage@last{5}
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||||
240
Class_Work/nuce2101/exam2/latex/main.fdb_latexmk
Normal file
240
Class_Work/nuce2101/exam2/latex/main.fdb_latexmk
Normal file
@ -0,0 +1,240 @@
|
||||
# Fdb version 4
|
||||
["pdflatex"] 1762642109.51825 "main.tex" "main.pdf" "main" 1762642110.0665 0
|
||||
"/etc/texmf/web2c/texmf.cnf" 1726065852.27662 475 c0e671620eb5563b2130f56340a5fde8 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/enc/dvips/base/8r.enc" 1165713224 4850 80dc9bab7f31fb78a000ccfed0e27cab ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/map/fontname/texfonts.map" 1577235249 3524 cb3e574dea2d1052e39280babc910dc8 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/symbol/psyr.tfm" 1136768653 1408 5937f58aa508ea2cea4901c07d10f5fe ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/psyro.tfm" 1136768653 1544 23a042a74981a3e4b6ce2e350e390409 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/ptmb7t.tfm" 1136768653 2172 fd0c924230362ff848a33632ed45dc23 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/ptmb8r.tfm" 1136768653 4524 6bce29db5bc272ba5f332261583fee9c ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/ptmr7t.tfm" 1136768653 2124 2601a75482e9426d33db523edf23570a ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/ptmr8c.tfm" 1136768653 1352 fa28a7e6d323c65ce7d13d5342ff6be2 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/ptmr8r.tfm" 1136768653 4408 25b74d011a4c66b7f212c0cc3c90061b ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/ptmri7t.tfm" 1136768653 2288 f478fc8fed18759effb59f3dad7f3084 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/ptmri8r.tfm" 1136768653 4640 532ca3305aad10cc01d769f3f91f1029 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/zptmcm7m.tfm" 1136768653 2232 db256afffc8202da192b4641df14d602 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/zptmcm7t.tfm" 1136768653 2172 1d00c2a0d10f23031be62329457a870c ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/zptmcm7v.tfm" 1136768653 1032 20febbd0f0c9a48eb78616f897008286 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/adobe/times/zptmcm7y.tfm" 1136768653 1520 ad7b3c1a480a03b3e41b5fbb13d938f2 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/public/amsfonts/symbols/msam10.tfm" 1246382020 916 f87d7c45f9c908e672703b83b72241a3 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/public/amsfonts/symbols/msbm10.tfm" 1246382020 908 2921f8a10601f252058503cc6570e581 ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/public/cm/cmmi10.tfm" 1136768653 1528 abec98dbc43e172678c11b3b9031252a ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/public/cm/cmr10.tfm" 1136768653 1296 45809c5a464d5f32c8f98ba97c1bb47f ""
|
||||
"/usr/share/texlive/texmf-dist/fonts/tfm/public/cm/cmr12.tfm" 1136768653 1288 655e228510b4c2a1abe905c368440826 ""
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913
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\documentclass{dane_proposal_format}
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% Additional packages for code listings
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\title{NUCE 2101: Exam 2}
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\author{%
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PI: Dane A. Sabo\\
|
||||
dane.sabo@pitt.edu\\
|
||||
}
|
||||
|
||||
\date{\today}
|
||||
\begin{document}
|
||||
|
||||
\maketitle
|
||||
\input{problem1.tex}
|
||||
\input{problem2.tex}
|
||||
\input{problem3.tex}
|
||||
\input{problem4.tex}
|
||||
\input{problem5.tex}
|
||||
\input{problem6.tex}
|
||||
|
||||
\newpage
|
||||
|
||||
\end{document}
|
||||
0
Class_Work/nuce2101/exam2/latex/problem1.tex
Normal file
0
Class_Work/nuce2101/exam2/latex/problem1.tex
Normal file
0
Class_Work/nuce2101/exam2/latex/problem2.tex
Normal file
0
Class_Work/nuce2101/exam2/latex/problem2.tex
Normal file
161
Class_Work/nuce2101/exam2/latex/problem3.tex
Normal file
161
Class_Work/nuce2101/exam2/latex/problem3.tex
Normal file
@ -0,0 +1,161 @@
|
||||
\section*{Problem 3}
|
||||
|
||||
\subsection*{Part A}
|
||||
|
||||
\subsubsection*{Python Code}
|
||||
\begin{lstlisting}[language=Python,
|
||||
basicstyle=\ttfamily\small,
|
||||
keywordstyle=\color{blue},
|
||||
commentstyle=\color{gray},
|
||||
stringstyle=\color{red},
|
||||
showstringspaces=false,
|
||||
numbers=left,
|
||||
numberstyle=\tiny,
|
||||
frame=single,
|
||||
breaklines=true]
|
||||
import numpy as np
|
||||
|
||||
# Problem 3A
|
||||
## Using formulas from Fundamental Kinetics Ideas R17 Page 51
|
||||
DRW = 10 # pcm/step
|
||||
STEPS = 8
|
||||
LAMBDA_EFF = 0.1 # hz
|
||||
|
||||
# ASSUMING AFTER ROD PULL COMPLETE, RHO_DOT = 0
|
||||
RHO_DOT = 0
|
||||
BETA = 640 # pcm
|
||||
|
||||
# FIND RHO AFTER ROD PULL
|
||||
rho = DRW * STEPS # pcm
|
||||
|
||||
sur = 26.06 * (RHO_DOT + LAMBDA_EFF * rho) / (BETA - rho)
|
||||
|
||||
print(f"The Start Up Rate is: {sur:.3f}")
|
||||
\end{lstlisting}
|
||||
|
||||
\subsubsection*{Solution}
|
||||
Given:
|
||||
\begin{itemize}
|
||||
\item Differential Rod Worth (DRW) = 10 pcm/step
|
||||
\item Number of steps = 8
|
||||
\item $\lambda_{eff}$ = 0.1 Hz
|
||||
\item $\dot{\rho}$ = 0 (after rod pull complete)
|
||||
\item $\beta$ = 640 pcm
|
||||
\end{itemize}
|
||||
|
||||
Reactivity after rod pull:
|
||||
\[\rho = \text{DRW} \times \text{STEPS} = 10 \times 8 = 80 \text{ pcm}\]
|
||||
|
||||
Start-up rate calculation:
|
||||
\[\text{SUR} = \frac{26.06 \times (\dot{\rho} + \lambda_{eff} \times \rho)}{\beta - \rho} = \frac{26.06 \times (0 + 0.1 \times 80)}{640 - 80}\]
|
||||
|
||||
\[\boxed{\text{Start Up Rate} = 0.373 \text{ DPM}}\]
|
||||
|
||||
\subsection*{Part B}
|
||||
|
||||
Negative reactivity feedback due to temperature would cause this power level
|
||||
off. I would expect that the average reactor temperature would have increased
|
||||
from the low power state significantly. I would also expect xenon concentration
|
||||
would have increased, but would not have been the culprit in power leveling off.
|
||||
|
||||
\subsection*{Part C}
|
||||
|
||||
\subsubsection*{Python Code}
|
||||
\begin{lstlisting}[language=Python,
|
||||
basicstyle=\ttfamily\small,
|
||||
keywordstyle=\color{blue},
|
||||
commentstyle=\color{gray},
|
||||
stringstyle=\color{red},
|
||||
showstringspaces=false,
|
||||
numbers=left,
|
||||
numberstyle=\tiny,
|
||||
frame=single,
|
||||
breaklines=true]
|
||||
# Problem 3C
|
||||
import sympy as sm
|
||||
|
||||
D_POWER = 2.5 # %
|
||||
D_T_AVG = 4 # degrees
|
||||
HEAT_UP_RATE = 0.15 # F/s
|
||||
ALPHA_F = 10 # pcm/%power
|
||||
|
||||
rho_rod = rho
|
||||
|
||||
# The heat up rate introduces a rho_dot, so SUR becomes 0 at the peak power.
|
||||
alpha_w_sym = sm.Symbol("alpha_w")
|
||||
rho_dot = alpha_w_sym * HEAT_UP_RATE
|
||||
rho_net = alpha_w_sym * D_T_AVG + rho_rod + ALPHA_F * D_POWER
|
||||
|
||||
# At peak power, SUR = 0, which means: rho_dot + lambda_eff * rho_net = 0
|
||||
# (the numerator must be zero)
|
||||
equation = rho_dot + LAMBDA_EFF * rho_net
|
||||
|
||||
# Solve for alpha_w
|
||||
alpha_w_solution = sm.solve(equation, alpha_w_sym)[0]
|
||||
alpha_w = float(alpha_w_solution)
|
||||
|
||||
print(f"The water temperature reactivity coefficient is: {alpha_w:.3f} pcm/F")
|
||||
\end{lstlisting}
|
||||
|
||||
\subsubsection*{Solution}
|
||||
Given:
|
||||
\begin{itemize}
|
||||
\item Power change at peak: $\Delta P$ = 2.5\%
|
||||
\item Average temperature change at peak: $\Delta T_{avg}$ = 4$^\circ$F
|
||||
\item Heat-up rate: $\dot{T}$ = 0.15 $^\circ$F/s
|
||||
\item Fuel temperature coefficient: $\alpha_f$ = 10 pcm/\%power
|
||||
\item Rod reactivity: $\rho_{rod}$ = 80 pcm (from Part A)
|
||||
\item $\lambda_{eff}$ = 0.1 Hz
|
||||
\end{itemize}
|
||||
|
||||
At peak power, the start-up rate becomes zero (SUR = 0), but temperature is still rising. This is the key insight: the numerator of the SUR equation must equal zero:
|
||||
|
||||
\[\dot{\rho} + \lambda_{eff} \times \rho_{net} = 0\]
|
||||
|
||||
The temperature rise creates a reactivity change rate:
|
||||
\[\dot{\rho} = \alpha_w \times \dot{T} = \alpha_w \times 0.15\]
|
||||
|
||||
The net reactivity at the peak is:
|
||||
\[\rho_{net} = \alpha_w \Delta T_{avg} + \rho_{rod} + \alpha_f \Delta P = \alpha_w \times 4 + 80 + 10 \times 2.5\]
|
||||
|
||||
Substituting into the SUR = 0 condition:
|
||||
\[\alpha_w \times 0.15 + 0.1 \times (\alpha_w \times 4 + 80 + 25) = 0\]
|
||||
|
||||
\[0.15\alpha_w + 0.4\alpha_w + 10.5 = 0\]
|
||||
|
||||
\[0.55\alpha_w = -10.5\]
|
||||
|
||||
\[\boxed{\alpha_w = -19.091 \text{ pcm/}^\circ\text{F}}\]
|
||||
|
||||
\subsection*{Part D}
|
||||
|
||||
\subsubsection*{Solution}
|
||||
|
||||
At final equilibrium when the transient is complete:
|
||||
\begin{itemize}
|
||||
\item Temperature stops changing: $\dot{T} = 0 \Rightarrow \dot{\rho} = 0$
|
||||
\item Start-up rate returns to zero: SUR = 0
|
||||
\item Net reactivity must be zero: $\rho_{net} = 0$
|
||||
\end{itemize}
|
||||
|
||||
Since $\dot{\rho} = 0$ at equilibrium, the SUR equation requires:
|
||||
\[\text{SUR} = \frac{26.06 \times (0 + \lambda_{eff} \times \rho_{net})}{\beta - \rho_{net}} = 0\]
|
||||
|
||||
This is satisfied when $\rho_{net} = 0$:
|
||||
\[\alpha_w T_{final} + \rho_{rod} + \alpha_f P_{final} = 0\]
|
||||
|
||||
However, without knowing the heat removal characteristics (i.e., the relationship between power generation and temperature at thermal equilibrium with ambient losses), we cannot solve for exact values of $T_{final}$ and $P_{final}$.
|
||||
|
||||
\textbf{Qualitative Analysis:}
|
||||
|
||||
The transient behavior proceeds as follows:
|
||||
\begin{enumerate}
|
||||
\item \textbf{At the peak} ($\Delta T = 4^\circ$F, $\Delta P = 2.5\%$): SUR = 0, but temperature is still rising at 0.15 $^\circ$F/s
|
||||
\item \textbf{After the peak}: Temperature continues to rise $\Rightarrow$ more negative reactivity is added $\Rightarrow$ power decreases from its maximum
|
||||
\item \textbf{At final equilibrium}: Temperature plateaus when heat generation equals ambient heat removal
|
||||
\end{enumerate}
|
||||
|
||||
Therefore:
|
||||
\[\boxed{T_{final} > 4^\circ\text{F} \quad \text{and} \quad P_{final} < 2.5\%}\]
|
||||
|
||||
The final power is lower than the peak power, but the final temperature is higher than the peak temperature. The peak power at 2.5\% is a transient maximum, not the steady-state equilibrium value.
|
||||
0
Class_Work/nuce2101/exam2/latex/problem4.tex
Normal file
0
Class_Work/nuce2101/exam2/latex/problem4.tex
Normal file
0
Class_Work/nuce2101/exam2/latex/problem5.tex
Normal file
0
Class_Work/nuce2101/exam2/latex/problem5.tex
Normal file
29
Class_Work/nuce2101/exam2/latex/problem6.tex
Normal file
29
Class_Work/nuce2101/exam2/latex/problem6.tex
Normal file
@ -0,0 +1,29 @@
|
||||
\section*{Problem 6}
|
||||
\subsection*{Part A}
|
||||
|
||||
Core design that prohibits adequate transfer of power between core regions will
|
||||
increase the likelihood of oscillations. In our notes for 'Simplified Parallel
|
||||
Coupled Reactors', we summarized this communication between reactor regions as a
|
||||
parameter $g$. Designs that have connections between areas with small $g$ will
|
||||
suffer from worse oscillations. I would presume reactors that have large aspect
|
||||
ratios would suffer more from oscillations, as it would be harder for different
|
||||
ends of the reactor core to 'communicate' with one another.
|
||||
|
||||
\subsection*{Part B}
|
||||
|
||||
These oscillations will cause damage to the fuel and reactor over time. The
|
||||
reactor is presumably not designed to carry such high power loads in localized
|
||||
regions of the reactor, as opposed to a balanced power load across the entire
|
||||
reactor core.
|
||||
|
||||
\subsection*{Part C}
|
||||
|
||||
Oscillations might impact core protection or safety analysis by obscuring the
|
||||
actual reactivity or temperature values inside the reactor core. Without proper
|
||||
care to obtain good measurements, a reactor operator could not be aware that
|
||||
certain oscillating areas of the core are exceeding temperature and local power
|
||||
limits, all the while the reactor as a whole may appear as if it's behaving
|
||||
normally. The result is that while coolant flow in and out of the reactor
|
||||
maintain normal temperature, oscillating fuel rods may actually be pushing
|
||||
beyond designed limits, and compromising their cladding, performance, or other
|
||||
important characteristics..
|
||||
63
Class_Work/nuce2101/exam2/python/problem3.py
Normal file
63
Class_Work/nuce2101/exam2/python/problem3.py
Normal file
@ -0,0 +1,63 @@
|
||||
import numpy as np
|
||||
import sympy as sm
|
||||
|
||||
# Problem 3A
|
||||
## Using formulas from Fundamental Kinetics Ideas R17 Page 51
|
||||
DRW = 10 # pcm/step
|
||||
STEPS = 8
|
||||
LAMBDA_EFF = 0.1 # hz
|
||||
|
||||
# ASSUMING AFTER ROD PULL COMPLETE, RHO_DOT = 0
|
||||
RHO_DOT = 0
|
||||
BETA = 640 # pcm
|
||||
|
||||
# FIND RHO AFTER ROD PULL
|
||||
rho = DRW * STEPS # pcm
|
||||
|
||||
sur = 26.06 * (RHO_DOT + LAMBDA_EFF * rho) / (BETA - rho)
|
||||
|
||||
print(f"The Start Up Rate is: {sur:.3f}")
|
||||
|
||||
# Problem 3C
|
||||
# rho_net = rho_T + rho_rods + rho_poison + rho_fuel + ...
|
||||
# rho_net = alpha_w * (4 degrees) + rho (from above) + 0 + alpha_f * 2.5
|
||||
|
||||
D_POWER = 2.5 # %
|
||||
D_T_AVG = 4 # degrees
|
||||
HEAT_UP_RATE = 0.15 # F/s
|
||||
ALPHA_F = 10 # pcm/%power
|
||||
|
||||
rho_rod = rho
|
||||
|
||||
# The heat up rate introduces a rho_dot, so SUR becomes 0 at the peak power.
|
||||
alpha_w_sym = sm.Symbol("alpha_w")
|
||||
rho_dot = alpha_w_sym * HEAT_UP_RATE
|
||||
rho_net = alpha_w_sym * D_T_AVG + rho_rod + ALPHA_F * D_POWER
|
||||
|
||||
# At peak power, SUR = 0, which means: rho_dot + lambda_eff * rho_net = 0
|
||||
# (the numerator must be zero)
|
||||
equation = rho_dot + LAMBDA_EFF * rho_net
|
||||
|
||||
# Solve for alpha_w
|
||||
alpha_w_solution = sm.solve(equation, alpha_w_sym)[0]
|
||||
alpha_w = float(alpha_w_solution)
|
||||
|
||||
print(f"\nThe water temperature reactivity coefficient is: {alpha_w:.3f} pcm/°F")
|
||||
|
||||
# Problem 3D
|
||||
# At final equilibrium: temperature stops changing (rho_dot = 0) and rho_net = 0
|
||||
# This means: alpha_w * T_final + rho_rod + alpha_f * P_final = 0
|
||||
#
|
||||
# However, without knowing the heat removal characteristics (relationship between
|
||||
# power and temperature at equilibrium), we cannot solve for exact values.
|
||||
#
|
||||
# Qualitative analysis:
|
||||
# - At peak (4°F, 2.5%): SUR = 0 but temperature still rising
|
||||
# - After peak: Temperature continues to rise → more negative reactivity → power decreases
|
||||
# - At final equilibrium: Temperature plateaus at T_final > 4°F, Power at P_final < 2.5%
|
||||
|
||||
print(f"\nPart D - Qualitative Answer:")
|
||||
print(f"At peak power: ΔT = {D_T_AVG}°F, ΔP = {D_POWER}%")
|
||||
print(f"At final equilibrium:")
|
||||
print(f" - Temperature: T_final > {D_T_AVG}°F (continues rising after peak)")
|
||||
print(f" - Power: P_final < {D_POWER}% (decreases from peak as T rises further)")
|
||||
247
Class_Work/nuce2101/exam2/python/venv/bin/Activate.ps1
Normal file
247
Class_Work/nuce2101/exam2/python/venv/bin/Activate.ps1
Normal file
@ -0,0 +1,247 @@
|
||||
<#
|
||||
.Synopsis
|
||||
Activate a Python virtual environment for the current PowerShell session.
|
||||
|
||||
.Description
|
||||
Pushes the python executable for a virtual environment to the front of the
|
||||
$Env:PATH environment variable and sets the prompt to signify that you are
|
||||
in a Python virtual environment. Makes use of the command line switches as
|
||||
well as the `pyvenv.cfg` file values present in the virtual environment.
|
||||
|
||||
.Parameter VenvDir
|
||||
Path to the directory that contains the virtual environment to activate. The
|
||||
default value for this is the parent of the directory that the Activate.ps1
|
||||
script is located within.
|
||||
|
||||
.Parameter Prompt
|
||||
The prompt prefix to display when this virtual environment is activated. By
|
||||
default, this prompt is the name of the virtual environment folder (VenvDir)
|
||||
surrounded by parentheses and followed by a single space (ie. '(.venv) ').
|
||||
|
||||
.Example
|
||||
Activate.ps1
|
||||
Activates the Python virtual environment that contains the Activate.ps1 script.
|
||||
|
||||
.Example
|
||||
Activate.ps1 -Verbose
|
||||
Activates the Python virtual environment that contains the Activate.ps1 script,
|
||||
and shows extra information about the activation as it executes.
|
||||
|
||||
.Example
|
||||
Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
|
||||
Activates the Python virtual environment located in the specified location.
|
||||
|
||||
.Example
|
||||
Activate.ps1 -Prompt "MyPython"
|
||||
Activates the Python virtual environment that contains the Activate.ps1 script,
|
||||
and prefixes the current prompt with the specified string (surrounded in
|
||||
parentheses) while the virtual environment is active.
|
||||
|
||||
.Notes
|
||||
On Windows, it may be required to enable this Activate.ps1 script by setting the
|
||||
execution policy for the user. You can do this by issuing the following PowerShell
|
||||
command:
|
||||
|
||||
PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
|
||||
|
||||
For more information on Execution Policies:
|
||||
https://go.microsoft.com/fwlink/?LinkID=135170
|
||||
|
||||
#>
|
||||
Param(
|
||||
[Parameter(Mandatory = $false)]
|
||||
[String]
|
||||
$VenvDir,
|
||||
[Parameter(Mandatory = $false)]
|
||||
[String]
|
||||
$Prompt
|
||||
)
|
||||
|
||||
<# Function declarations --------------------------------------------------- #>
|
||||
|
||||
<#
|
||||
.Synopsis
|
||||
Remove all shell session elements added by the Activate script, including the
|
||||
addition of the virtual environment's Python executable from the beginning of
|
||||
the PATH variable.
|
||||
|
||||
.Parameter NonDestructive
|
||||
If present, do not remove this function from the global namespace for the
|
||||
session.
|
||||
|
||||
#>
|
||||
function global:deactivate ([switch]$NonDestructive) {
|
||||
# Revert to original values
|
||||
|
||||
# The prior prompt:
|
||||
if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
|
||||
Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
|
||||
Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
|
||||
}
|
||||
|
||||
# The prior PYTHONHOME:
|
||||
if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
|
||||
Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
|
||||
Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
|
||||
}
|
||||
|
||||
# The prior PATH:
|
||||
if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
|
||||
Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
|
||||
Remove-Item -Path Env:_OLD_VIRTUAL_PATH
|
||||
}
|
||||
|
||||
# Just remove the VIRTUAL_ENV altogether:
|
||||
if (Test-Path -Path Env:VIRTUAL_ENV) {
|
||||
Remove-Item -Path env:VIRTUAL_ENV
|
||||
}
|
||||
|
||||
# Just remove VIRTUAL_ENV_PROMPT altogether.
|
||||
if (Test-Path -Path Env:VIRTUAL_ENV_PROMPT) {
|
||||
Remove-Item -Path env:VIRTUAL_ENV_PROMPT
|
||||
}
|
||||
|
||||
# Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
|
||||
if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
|
||||
Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
|
||||
}
|
||||
|
||||
# Leave deactivate function in the global namespace if requested:
|
||||
if (-not $NonDestructive) {
|
||||
Remove-Item -Path function:deactivate
|
||||
}
|
||||
}
|
||||
|
||||
<#
|
||||
.Description
|
||||
Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
|
||||
given folder, and returns them in a map.
|
||||
|
||||
For each line in the pyvenv.cfg file, if that line can be parsed into exactly
|
||||
two strings separated by `=` (with any amount of whitespace surrounding the =)
|
||||
then it is considered a `key = value` line. The left hand string is the key,
|
||||
the right hand is the value.
|
||||
|
||||
If the value starts with a `'` or a `"` then the first and last character is
|
||||
stripped from the value before being captured.
|
||||
|
||||
.Parameter ConfigDir
|
||||
Path to the directory that contains the `pyvenv.cfg` file.
|
||||
#>
|
||||
function Get-PyVenvConfig(
|
||||
[String]
|
||||
$ConfigDir
|
||||
) {
|
||||
Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
|
||||
|
||||
# Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
|
||||
$pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
|
||||
|
||||
# An empty map will be returned if no config file is found.
|
||||
$pyvenvConfig = @{ }
|
||||
|
||||
if ($pyvenvConfigPath) {
|
||||
|
||||
Write-Verbose "File exists, parse `key = value` lines"
|
||||
$pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
|
||||
|
||||
$pyvenvConfigContent | ForEach-Object {
|
||||
$keyval = $PSItem -split "\s*=\s*", 2
|
||||
if ($keyval[0] -and $keyval[1]) {
|
||||
$val = $keyval[1]
|
||||
|
||||
# Remove extraneous quotations around a string value.
|
||||
if ("'""".Contains($val.Substring(0, 1))) {
|
||||
$val = $val.Substring(1, $val.Length - 2)
|
||||
}
|
||||
|
||||
$pyvenvConfig[$keyval[0]] = $val
|
||||
Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
|
||||
}
|
||||
}
|
||||
}
|
||||
return $pyvenvConfig
|
||||
}
|
||||
|
||||
|
||||
<# Begin Activate script --------------------------------------------------- #>
|
||||
|
||||
# Determine the containing directory of this script
|
||||
$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
|
||||
$VenvExecDir = Get-Item -Path $VenvExecPath
|
||||
|
||||
Write-Verbose "Activation script is located in path: '$VenvExecPath'"
|
||||
Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
|
||||
Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
|
||||
|
||||
# Set values required in priority: CmdLine, ConfigFile, Default
|
||||
# First, get the location of the virtual environment, it might not be
|
||||
# VenvExecDir if specified on the command line.
|
||||
if ($VenvDir) {
|
||||
Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
|
||||
}
|
||||
else {
|
||||
Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
|
||||
$VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
|
||||
Write-Verbose "VenvDir=$VenvDir"
|
||||
}
|
||||
|
||||
# Next, read the `pyvenv.cfg` file to determine any required value such
|
||||
# as `prompt`.
|
||||
$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
|
||||
|
||||
# Next, set the prompt from the command line, or the config file, or
|
||||
# just use the name of the virtual environment folder.
|
||||
if ($Prompt) {
|
||||
Write-Verbose "Prompt specified as argument, using '$Prompt'"
|
||||
}
|
||||
else {
|
||||
Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
|
||||
if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
|
||||
Write-Verbose " Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
|
||||
$Prompt = $pyvenvCfg['prompt'];
|
||||
}
|
||||
else {
|
||||
Write-Verbose " Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virtual environment)"
|
||||
Write-Verbose " Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
|
||||
$Prompt = Split-Path -Path $venvDir -Leaf
|
||||
}
|
||||
}
|
||||
|
||||
Write-Verbose "Prompt = '$Prompt'"
|
||||
Write-Verbose "VenvDir='$VenvDir'"
|
||||
|
||||
# Deactivate any currently active virtual environment, but leave the
|
||||
# deactivate function in place.
|
||||
deactivate -nondestructive
|
||||
|
||||
# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
|
||||
# that there is an activated venv.
|
||||
$env:VIRTUAL_ENV = $VenvDir
|
||||
|
||||
if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
|
||||
|
||||
Write-Verbose "Setting prompt to '$Prompt'"
|
||||
|
||||
# Set the prompt to include the env name
|
||||
# Make sure _OLD_VIRTUAL_PROMPT is global
|
||||
function global:_OLD_VIRTUAL_PROMPT { "" }
|
||||
Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
|
||||
New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
|
||||
|
||||
function global:prompt {
|
||||
Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
|
||||
_OLD_VIRTUAL_PROMPT
|
||||
}
|
||||
$env:VIRTUAL_ENV_PROMPT = $Prompt
|
||||
}
|
||||
|
||||
# Clear PYTHONHOME
|
||||
if (Test-Path -Path Env:PYTHONHOME) {
|
||||
Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
|
||||
Remove-Item -Path Env:PYTHONHOME
|
||||
}
|
||||
|
||||
# Add the venv to the PATH
|
||||
Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
|
||||
$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"
|
||||
70
Class_Work/nuce2101/exam2/python/venv/bin/activate
Normal file
70
Class_Work/nuce2101/exam2/python/venv/bin/activate
Normal file
@ -0,0 +1,70 @@
|
||||
# This file must be used with "source bin/activate" *from bash*
|
||||
# You cannot run it directly
|
||||
|
||||
deactivate () {
|
||||
# reset old environment variables
|
||||
if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
|
||||
PATH="${_OLD_VIRTUAL_PATH:-}"
|
||||
export PATH
|
||||
unset _OLD_VIRTUAL_PATH
|
||||
fi
|
||||
if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
|
||||
PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
|
||||
export PYTHONHOME
|
||||
unset _OLD_VIRTUAL_PYTHONHOME
|
||||
fi
|
||||
|
||||
# Call hash to forget past commands. Without forgetting
|
||||
# past commands the $PATH changes we made may not be respected
|
||||
hash -r 2> /dev/null
|
||||
|
||||
if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
|
||||
PS1="${_OLD_VIRTUAL_PS1:-}"
|
||||
export PS1
|
||||
unset _OLD_VIRTUAL_PS1
|
||||
fi
|
||||
|
||||
unset VIRTUAL_ENV
|
||||
unset VIRTUAL_ENV_PROMPT
|
||||
if [ ! "${1:-}" = "nondestructive" ] ; then
|
||||
# Self destruct!
|
||||
unset -f deactivate
|
||||
fi
|
||||
}
|
||||
|
||||
# unset irrelevant variables
|
||||
deactivate nondestructive
|
||||
|
||||
# on Windows, a path can contain colons and backslashes and has to be converted:
|
||||
if [ "${OSTYPE:-}" = "cygwin" ] || [ "${OSTYPE:-}" = "msys" ] ; then
|
||||
# transform D:\path\to\venv to /d/path/to/venv on MSYS
|
||||
# and to /cygdrive/d/path/to/venv on Cygwin
|
||||
export VIRTUAL_ENV=$(cygpath '/home/danesabo/Documents/Dane'"'"'s Vault/Class_Work/nuce2101/exam2/python/venv')
|
||||
else
|
||||
# use the path as-is
|
||||
export VIRTUAL_ENV='/home/danesabo/Documents/Dane'"'"'s Vault/Class_Work/nuce2101/exam2/python/venv'
|
||||
fi
|
||||
|
||||
_OLD_VIRTUAL_PATH="$PATH"
|
||||
PATH="$VIRTUAL_ENV/"bin":$PATH"
|
||||
export PATH
|
||||
|
||||
# unset PYTHONHOME if set
|
||||
# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
|
||||
# could use `if (set -u; : $PYTHONHOME) ;` in bash
|
||||
if [ -n "${PYTHONHOME:-}" ] ; then
|
||||
_OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
|
||||
unset PYTHONHOME
|
||||
fi
|
||||
|
||||
if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
|
||||
_OLD_VIRTUAL_PS1="${PS1:-}"
|
||||
PS1='(venv) '"${PS1:-}"
|
||||
export PS1
|
||||
VIRTUAL_ENV_PROMPT='(venv) '
|
||||
export VIRTUAL_ENV_PROMPT
|
||||
fi
|
||||
|
||||
# Call hash to forget past commands. Without forgetting
|
||||
# past commands the $PATH changes we made may not be respected
|
||||
hash -r 2> /dev/null
|
||||
27
Class_Work/nuce2101/exam2/python/venv/bin/activate.csh
Normal file
27
Class_Work/nuce2101/exam2/python/venv/bin/activate.csh
Normal file
@ -0,0 +1,27 @@
|
||||
# This file must be used with "source bin/activate.csh" *from csh*.
|
||||
# You cannot run it directly.
|
||||
|
||||
# Created by Davide Di Blasi <davidedb@gmail.com>.
|
||||
# Ported to Python 3.3 venv by Andrew Svetlov <andrew.svetlov@gmail.com>
|
||||
|
||||
alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; unsetenv VIRTUAL_ENV_PROMPT; test "\!:*" != "nondestructive" && unalias deactivate'
|
||||
|
||||
# Unset irrelevant variables.
|
||||
deactivate nondestructive
|
||||
|
||||
setenv VIRTUAL_ENV '/home/danesabo/Documents/Dane'"'"'s Vault/Class_Work/nuce2101/exam2/python/venv'
|
||||
|
||||
set _OLD_VIRTUAL_PATH="$PATH"
|
||||
setenv PATH "$VIRTUAL_ENV/"bin":$PATH"
|
||||
|
||||
|
||||
set _OLD_VIRTUAL_PROMPT="$prompt"
|
||||
|
||||
if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
|
||||
set prompt = '(venv) '"$prompt"
|
||||
setenv VIRTUAL_ENV_PROMPT '(venv) '
|
||||
endif
|
||||
|
||||
alias pydoc python -m pydoc
|
||||
|
||||
rehash
|
||||
69
Class_Work/nuce2101/exam2/python/venv/bin/activate.fish
Normal file
69
Class_Work/nuce2101/exam2/python/venv/bin/activate.fish
Normal file
@ -0,0 +1,69 @@
|
||||
# This file must be used with "source <venv>/bin/activate.fish" *from fish*
|
||||
# (https://fishshell.com/). You cannot run it directly.
|
||||
|
||||
function deactivate -d "Exit virtual environment and return to normal shell environment"
|
||||
# reset old environment variables
|
||||
if test -n "$_OLD_VIRTUAL_PATH"
|
||||
set -gx PATH $_OLD_VIRTUAL_PATH
|
||||
set -e _OLD_VIRTUAL_PATH
|
||||
end
|
||||
if test -n "$_OLD_VIRTUAL_PYTHONHOME"
|
||||
set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
|
||||
set -e _OLD_VIRTUAL_PYTHONHOME
|
||||
end
|
||||
|
||||
if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
|
||||
set -e _OLD_FISH_PROMPT_OVERRIDE
|
||||
# prevents error when using nested fish instances (Issue #93858)
|
||||
if functions -q _old_fish_prompt
|
||||
functions -e fish_prompt
|
||||
functions -c _old_fish_prompt fish_prompt
|
||||
functions -e _old_fish_prompt
|
||||
end
|
||||
end
|
||||
|
||||
set -e VIRTUAL_ENV
|
||||
set -e VIRTUAL_ENV_PROMPT
|
||||
if test "$argv[1]" != "nondestructive"
|
||||
# Self-destruct!
|
||||
functions -e deactivate
|
||||
end
|
||||
end
|
||||
|
||||
# Unset irrelevant variables.
|
||||
deactivate nondestructive
|
||||
|
||||
set -gx VIRTUAL_ENV '/home/danesabo/Documents/Dane'"'"'s Vault/Class_Work/nuce2101/exam2/python/venv'
|
||||
|
||||
set -gx _OLD_VIRTUAL_PATH $PATH
|
||||
set -gx PATH "$VIRTUAL_ENV/"bin $PATH
|
||||
|
||||
# Unset PYTHONHOME if set.
|
||||
if set -q PYTHONHOME
|
||||
set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
|
||||
set -e PYTHONHOME
|
||||
end
|
||||
|
||||
if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
|
||||
# fish uses a function instead of an env var to generate the prompt.
|
||||
|
||||
# Save the current fish_prompt function as the function _old_fish_prompt.
|
||||
functions -c fish_prompt _old_fish_prompt
|
||||
|
||||
# With the original prompt function renamed, we can override with our own.
|
||||
function fish_prompt
|
||||
# Save the return status of the last command.
|
||||
set -l old_status $status
|
||||
|
||||
# Output the venv prompt; color taken from the blue of the Python logo.
|
||||
printf "%s%s%s" (set_color 4B8BBE) '(venv) ' (set_color normal)
|
||||
|
||||
# Restore the return status of the previous command.
|
||||
echo "exit $old_status" | .
|
||||
# Output the original/"old" prompt.
|
||||
_old_fish_prompt
|
||||
end
|
||||
|
||||
set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
|
||||
set -gx VIRTUAL_ENV_PROMPT '(venv) '
|
||||
end
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/f2py
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/f2py
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from numpy.f2py.f2py2e import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/fonttools
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/fonttools
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from fontTools.__main__ import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/isympy
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/isympy
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from isympy import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/numpy-config
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/numpy-config
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from numpy._configtool import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/pip
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/pip
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from pip._internal.cli.main import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/pip3
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/pip3
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from pip._internal.cli.main import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/pip3.12
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/pip3.12
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from pip._internal.cli.main import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/pyftmerge
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/pyftmerge
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from fontTools.merge import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/pyftsubset
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/pyftsubset
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from fontTools.subset import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
1
Class_Work/nuce2101/exam2/python/venv/bin/python
Symbolic link
1
Class_Work/nuce2101/exam2/python/venv/bin/python
Symbolic link
@ -0,0 +1 @@
|
||||
python3
|
||||
1
Class_Work/nuce2101/exam2/python/venv/bin/python3
Symbolic link
1
Class_Work/nuce2101/exam2/python/venv/bin/python3
Symbolic link
@ -0,0 +1 @@
|
||||
/usr/bin/python3
|
||||
1
Class_Work/nuce2101/exam2/python/venv/bin/python3.12
Symbolic link
1
Class_Work/nuce2101/exam2/python/venv/bin/python3.12
Symbolic link
@ -0,0 +1 @@
|
||||
python3
|
||||
10
Class_Work/nuce2101/exam2/python/venv/bin/ttx
Executable file
10
Class_Work/nuce2101/exam2/python/venv/bin/ttx
Executable file
@ -0,0 +1,10 @@
|
||||
#!/bin/sh
|
||||
'''exec' "/home/danesabo/Documents/Dane's Vault/Class_Work/nuce2101/exam2/python/venv/bin/python3" "$0" "$@"
|
||||
' '''
|
||||
# -*- coding: utf-8 -*-
|
||||
import re
|
||||
import sys
|
||||
from fontTools.ttx import main
|
||||
if __name__ == '__main__':
|
||||
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
|
||||
sys.exit(main())
|
||||
@ -0,0 +1,291 @@
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
from io import BytesIO
|
||||
from typing import IO
|
||||
|
||||
from . import ExifTags, Image, ImageFile
|
||||
|
||||
try:
|
||||
from . import _avif
|
||||
|
||||
SUPPORTED = True
|
||||
except ImportError:
|
||||
SUPPORTED = False
|
||||
|
||||
# Decoder options as module globals, until there is a way to pass parameters
|
||||
# to Image.open (see https://github.com/python-pillow/Pillow/issues/569)
|
||||
DECODE_CODEC_CHOICE = "auto"
|
||||
DEFAULT_MAX_THREADS = 0
|
||||
|
||||
|
||||
def get_codec_version(codec_name: str) -> str | None:
|
||||
versions = _avif.codec_versions()
|
||||
for version in versions.split(", "):
|
||||
if version.split(" [")[0] == codec_name:
|
||||
return version.split(":")[-1].split(" ")[0]
|
||||
return None
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool | str:
|
||||
if prefix[4:8] != b"ftyp":
|
||||
return False
|
||||
major_brand = prefix[8:12]
|
||||
if major_brand in (
|
||||
# coding brands
|
||||
b"avif",
|
||||
b"avis",
|
||||
# We accept files with AVIF container brands; we can't yet know if
|
||||
# the ftyp box has the correct compatible brands, but if it doesn't
|
||||
# then the plugin will raise a SyntaxError which Pillow will catch
|
||||
# before moving on to the next plugin that accepts the file.
|
||||
#
|
||||
# Also, because this file might not actually be an AVIF file, we
|
||||
# don't raise an error if AVIF support isn't properly compiled.
|
||||
b"mif1",
|
||||
b"msf1",
|
||||
):
|
||||
if not SUPPORTED:
|
||||
return (
|
||||
"image file could not be identified because AVIF support not installed"
|
||||
)
|
||||
return True
|
||||
return False
|
||||
|
||||
|
||||
def _get_default_max_threads() -> int:
|
||||
if DEFAULT_MAX_THREADS:
|
||||
return DEFAULT_MAX_THREADS
|
||||
if hasattr(os, "sched_getaffinity"):
|
||||
return len(os.sched_getaffinity(0))
|
||||
else:
|
||||
return os.cpu_count() or 1
|
||||
|
||||
|
||||
class AvifImageFile(ImageFile.ImageFile):
|
||||
format = "AVIF"
|
||||
format_description = "AVIF image"
|
||||
__frame = -1
|
||||
|
||||
def _open(self) -> None:
|
||||
if not SUPPORTED:
|
||||
msg = "image file could not be opened because AVIF support not installed"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
if DECODE_CODEC_CHOICE != "auto" and not _avif.decoder_codec_available(
|
||||
DECODE_CODEC_CHOICE
|
||||
):
|
||||
msg = "Invalid opening codec"
|
||||
raise ValueError(msg)
|
||||
self._decoder = _avif.AvifDecoder(
|
||||
self.fp.read(),
|
||||
DECODE_CODEC_CHOICE,
|
||||
_get_default_max_threads(),
|
||||
)
|
||||
|
||||
# Get info from decoder
|
||||
self._size, self.n_frames, self._mode, icc, exif, exif_orientation, xmp = (
|
||||
self._decoder.get_info()
|
||||
)
|
||||
self.is_animated = self.n_frames > 1
|
||||
|
||||
if icc:
|
||||
self.info["icc_profile"] = icc
|
||||
if xmp:
|
||||
self.info["xmp"] = xmp
|
||||
|
||||
if exif_orientation != 1 or exif:
|
||||
exif_data = Image.Exif()
|
||||
if exif:
|
||||
exif_data.load(exif)
|
||||
original_orientation = exif_data.get(ExifTags.Base.Orientation, 1)
|
||||
else:
|
||||
original_orientation = 1
|
||||
if exif_orientation != original_orientation:
|
||||
exif_data[ExifTags.Base.Orientation] = exif_orientation
|
||||
exif = exif_data.tobytes()
|
||||
if exif:
|
||||
self.info["exif"] = exif
|
||||
self.seek(0)
|
||||
|
||||
def seek(self, frame: int) -> None:
|
||||
if not self._seek_check(frame):
|
||||
return
|
||||
|
||||
# Set tile
|
||||
self.__frame = frame
|
||||
self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 0, self.mode)]
|
||||
|
||||
def load(self) -> Image.core.PixelAccess | None:
|
||||
if self.tile:
|
||||
# We need to load the image data for this frame
|
||||
data, timescale, pts_in_timescales, duration_in_timescales = (
|
||||
self._decoder.get_frame(self.__frame)
|
||||
)
|
||||
self.info["timestamp"] = round(1000 * (pts_in_timescales / timescale))
|
||||
self.info["duration"] = round(1000 * (duration_in_timescales / timescale))
|
||||
|
||||
if self.fp and self._exclusive_fp:
|
||||
self.fp.close()
|
||||
self.fp = BytesIO(data)
|
||||
|
||||
return super().load()
|
||||
|
||||
def load_seek(self, pos: int) -> None:
|
||||
pass
|
||||
|
||||
def tell(self) -> int:
|
||||
return self.__frame
|
||||
|
||||
|
||||
def _save_all(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
_save(im, fp, filename, save_all=True)
|
||||
|
||||
|
||||
def _save(
|
||||
im: Image.Image, fp: IO[bytes], filename: str | bytes, save_all: bool = False
|
||||
) -> None:
|
||||
info = im.encoderinfo.copy()
|
||||
if save_all:
|
||||
append_images = list(info.get("append_images", []))
|
||||
else:
|
||||
append_images = []
|
||||
|
||||
total = 0
|
||||
for ims in [im] + append_images:
|
||||
total += getattr(ims, "n_frames", 1)
|
||||
|
||||
quality = info.get("quality", 75)
|
||||
if not isinstance(quality, int) or quality < 0 or quality > 100:
|
||||
msg = "Invalid quality setting"
|
||||
raise ValueError(msg)
|
||||
|
||||
duration = info.get("duration", 0)
|
||||
subsampling = info.get("subsampling", "4:2:0")
|
||||
speed = info.get("speed", 6)
|
||||
max_threads = info.get("max_threads", _get_default_max_threads())
|
||||
codec = info.get("codec", "auto")
|
||||
if codec != "auto" and not _avif.encoder_codec_available(codec):
|
||||
msg = "Invalid saving codec"
|
||||
raise ValueError(msg)
|
||||
range_ = info.get("range", "full")
|
||||
tile_rows_log2 = info.get("tile_rows", 0)
|
||||
tile_cols_log2 = info.get("tile_cols", 0)
|
||||
alpha_premultiplied = bool(info.get("alpha_premultiplied", False))
|
||||
autotiling = bool(info.get("autotiling", tile_rows_log2 == tile_cols_log2 == 0))
|
||||
|
||||
icc_profile = info.get("icc_profile", im.info.get("icc_profile"))
|
||||
exif_orientation = 1
|
||||
if exif := info.get("exif"):
|
||||
if isinstance(exif, Image.Exif):
|
||||
exif_data = exif
|
||||
else:
|
||||
exif_data = Image.Exif()
|
||||
exif_data.load(exif)
|
||||
if ExifTags.Base.Orientation in exif_data:
|
||||
exif_orientation = exif_data.pop(ExifTags.Base.Orientation)
|
||||
exif = exif_data.tobytes() if exif_data else b""
|
||||
elif isinstance(exif, Image.Exif):
|
||||
exif = exif_data.tobytes()
|
||||
|
||||
xmp = info.get("xmp")
|
||||
|
||||
if isinstance(xmp, str):
|
||||
xmp = xmp.encode("utf-8")
|
||||
|
||||
advanced = info.get("advanced")
|
||||
if advanced is not None:
|
||||
if isinstance(advanced, dict):
|
||||
advanced = advanced.items()
|
||||
try:
|
||||
advanced = tuple(advanced)
|
||||
except TypeError:
|
||||
invalid = True
|
||||
else:
|
||||
invalid = any(not isinstance(v, tuple) or len(v) != 2 for v in advanced)
|
||||
if invalid:
|
||||
msg = (
|
||||
"advanced codec options must be a dict of key-value string "
|
||||
"pairs or a series of key-value two-tuples"
|
||||
)
|
||||
raise ValueError(msg)
|
||||
|
||||
# Setup the AVIF encoder
|
||||
enc = _avif.AvifEncoder(
|
||||
im.size,
|
||||
subsampling,
|
||||
quality,
|
||||
speed,
|
||||
max_threads,
|
||||
codec,
|
||||
range_,
|
||||
tile_rows_log2,
|
||||
tile_cols_log2,
|
||||
alpha_premultiplied,
|
||||
autotiling,
|
||||
icc_profile or b"",
|
||||
exif or b"",
|
||||
exif_orientation,
|
||||
xmp or b"",
|
||||
advanced,
|
||||
)
|
||||
|
||||
# Add each frame
|
||||
frame_idx = 0
|
||||
frame_duration = 0
|
||||
cur_idx = im.tell()
|
||||
is_single_frame = total == 1
|
||||
try:
|
||||
for ims in [im] + append_images:
|
||||
# Get number of frames in this image
|
||||
nfr = getattr(ims, "n_frames", 1)
|
||||
|
||||
for idx in range(nfr):
|
||||
ims.seek(idx)
|
||||
|
||||
# Make sure image mode is supported
|
||||
frame = ims
|
||||
rawmode = ims.mode
|
||||
if ims.mode not in {"RGB", "RGBA"}:
|
||||
rawmode = "RGBA" if ims.has_transparency_data else "RGB"
|
||||
frame = ims.convert(rawmode)
|
||||
|
||||
# Update frame duration
|
||||
if isinstance(duration, (list, tuple)):
|
||||
frame_duration = duration[frame_idx]
|
||||
else:
|
||||
frame_duration = duration
|
||||
|
||||
# Append the frame to the animation encoder
|
||||
enc.add(
|
||||
frame.tobytes("raw", rawmode),
|
||||
frame_duration,
|
||||
frame.size,
|
||||
rawmode,
|
||||
is_single_frame,
|
||||
)
|
||||
|
||||
# Update frame index
|
||||
frame_idx += 1
|
||||
|
||||
if not save_all:
|
||||
break
|
||||
|
||||
finally:
|
||||
im.seek(cur_idx)
|
||||
|
||||
# Get the final output from the encoder
|
||||
data = enc.finish()
|
||||
if data is None:
|
||||
msg = "cannot write file as AVIF (encoder returned None)"
|
||||
raise OSError(msg)
|
||||
|
||||
fp.write(data)
|
||||
|
||||
|
||||
Image.register_open(AvifImageFile.format, AvifImageFile, _accept)
|
||||
if SUPPORTED:
|
||||
Image.register_save(AvifImageFile.format, _save)
|
||||
Image.register_save_all(AvifImageFile.format, _save_all)
|
||||
Image.register_extensions(AvifImageFile.format, [".avif", ".avifs"])
|
||||
Image.register_mime(AvifImageFile.format, "image/avif")
|
||||
@ -0,0 +1,122 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# bitmap distribution font (bdf) file parser
|
||||
#
|
||||
# history:
|
||||
# 1996-05-16 fl created (as bdf2pil)
|
||||
# 1997-08-25 fl converted to FontFile driver
|
||||
# 2001-05-25 fl removed bogus __init__ call
|
||||
# 2002-11-20 fl robustification (from Kevin Cazabon, Dmitry Vasiliev)
|
||||
# 2003-04-22 fl more robustification (from Graham Dumpleton)
|
||||
#
|
||||
# Copyright (c) 1997-2003 by Secret Labs AB.
|
||||
# Copyright (c) 1997-2003 by Fredrik Lundh.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
|
||||
"""
|
||||
Parse X Bitmap Distribution Format (BDF)
|
||||
"""
|
||||
from __future__ import annotations
|
||||
|
||||
from typing import BinaryIO
|
||||
|
||||
from . import FontFile, Image
|
||||
|
||||
|
||||
def bdf_char(
|
||||
f: BinaryIO,
|
||||
) -> (
|
||||
tuple[
|
||||
str,
|
||||
int,
|
||||
tuple[tuple[int, int], tuple[int, int, int, int], tuple[int, int, int, int]],
|
||||
Image.Image,
|
||||
]
|
||||
| None
|
||||
):
|
||||
# skip to STARTCHAR
|
||||
while True:
|
||||
s = f.readline()
|
||||
if not s:
|
||||
return None
|
||||
if s.startswith(b"STARTCHAR"):
|
||||
break
|
||||
id = s[9:].strip().decode("ascii")
|
||||
|
||||
# load symbol properties
|
||||
props = {}
|
||||
while True:
|
||||
s = f.readline()
|
||||
if not s or s.startswith(b"BITMAP"):
|
||||
break
|
||||
i = s.find(b" ")
|
||||
props[s[:i].decode("ascii")] = s[i + 1 : -1].decode("ascii")
|
||||
|
||||
# load bitmap
|
||||
bitmap = bytearray()
|
||||
while True:
|
||||
s = f.readline()
|
||||
if not s or s.startswith(b"ENDCHAR"):
|
||||
break
|
||||
bitmap += s[:-1]
|
||||
|
||||
# The word BBX
|
||||
# followed by the width in x (BBw), height in y (BBh),
|
||||
# and x and y displacement (BBxoff0, BByoff0)
|
||||
# of the lower left corner from the origin of the character.
|
||||
width, height, x_disp, y_disp = (int(p) for p in props["BBX"].split())
|
||||
|
||||
# The word DWIDTH
|
||||
# followed by the width in x and y of the character in device pixels.
|
||||
dwx, dwy = (int(p) for p in props["DWIDTH"].split())
|
||||
|
||||
bbox = (
|
||||
(dwx, dwy),
|
||||
(x_disp, -y_disp - height, width + x_disp, -y_disp),
|
||||
(0, 0, width, height),
|
||||
)
|
||||
|
||||
try:
|
||||
im = Image.frombytes("1", (width, height), bitmap, "hex", "1")
|
||||
except ValueError:
|
||||
# deal with zero-width characters
|
||||
im = Image.new("1", (width, height))
|
||||
|
||||
return id, int(props["ENCODING"]), bbox, im
|
||||
|
||||
|
||||
class BdfFontFile(FontFile.FontFile):
|
||||
"""Font file plugin for the X11 BDF format."""
|
||||
|
||||
def __init__(self, fp: BinaryIO) -> None:
|
||||
super().__init__()
|
||||
|
||||
s = fp.readline()
|
||||
if not s.startswith(b"STARTFONT 2.1"):
|
||||
msg = "not a valid BDF file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
props = {}
|
||||
comments = []
|
||||
|
||||
while True:
|
||||
s = fp.readline()
|
||||
if not s or s.startswith(b"ENDPROPERTIES"):
|
||||
break
|
||||
i = s.find(b" ")
|
||||
props[s[:i].decode("ascii")] = s[i + 1 : -1].decode("ascii")
|
||||
if s[:i] in [b"COMMENT", b"COPYRIGHT"]:
|
||||
if s.find(b"LogicalFontDescription") < 0:
|
||||
comments.append(s[i + 1 : -1].decode("ascii"))
|
||||
|
||||
while True:
|
||||
c = bdf_char(fp)
|
||||
if not c:
|
||||
break
|
||||
id, ch, (xy, dst, src), im = c
|
||||
if 0 <= ch < len(self.glyph):
|
||||
self.glyph[ch] = xy, dst, src, im
|
||||
@ -0,0 +1,497 @@
|
||||
"""
|
||||
Blizzard Mipmap Format (.blp)
|
||||
Jerome Leclanche <jerome@leclan.ch>
|
||||
|
||||
The contents of this file are hereby released in the public domain (CC0)
|
||||
Full text of the CC0 license:
|
||||
https://creativecommons.org/publicdomain/zero/1.0/
|
||||
|
||||
BLP1 files, used mostly in Warcraft III, are not fully supported.
|
||||
All types of BLP2 files used in World of Warcraft are supported.
|
||||
|
||||
The BLP file structure consists of a header, up to 16 mipmaps of the
|
||||
texture
|
||||
|
||||
Texture sizes must be powers of two, though the two dimensions do
|
||||
not have to be equal; 512x256 is valid, but 512x200 is not.
|
||||
The first mipmap (mipmap #0) is the full size image; each subsequent
|
||||
mipmap halves both dimensions. The final mipmap should be 1x1.
|
||||
|
||||
BLP files come in many different flavours:
|
||||
* JPEG-compressed (type == 0) - only supported for BLP1.
|
||||
* RAW images (type == 1, encoding == 1). Each mipmap is stored as an
|
||||
array of 8-bit values, one per pixel, left to right, top to bottom.
|
||||
Each value is an index to the palette.
|
||||
* DXT-compressed (type == 1, encoding == 2):
|
||||
- DXT1 compression is used if alpha_encoding == 0.
|
||||
- An additional alpha bit is used if alpha_depth == 1.
|
||||
- DXT3 compression is used if alpha_encoding == 1.
|
||||
- DXT5 compression is used if alpha_encoding == 7.
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import abc
|
||||
import os
|
||||
import struct
|
||||
from enum import IntEnum
|
||||
from io import BytesIO
|
||||
from typing import IO
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
|
||||
class Format(IntEnum):
|
||||
JPEG = 0
|
||||
|
||||
|
||||
class Encoding(IntEnum):
|
||||
UNCOMPRESSED = 1
|
||||
DXT = 2
|
||||
UNCOMPRESSED_RAW_BGRA = 3
|
||||
|
||||
|
||||
class AlphaEncoding(IntEnum):
|
||||
DXT1 = 0
|
||||
DXT3 = 1
|
||||
DXT5 = 7
|
||||
|
||||
|
||||
def unpack_565(i: int) -> tuple[int, int, int]:
|
||||
return ((i >> 11) & 0x1F) << 3, ((i >> 5) & 0x3F) << 2, (i & 0x1F) << 3
|
||||
|
||||
|
||||
def decode_dxt1(
|
||||
data: bytes, alpha: bool = False
|
||||
) -> tuple[bytearray, bytearray, bytearray, bytearray]:
|
||||
"""
|
||||
input: one "row" of data (i.e. will produce 4*width pixels)
|
||||
"""
|
||||
|
||||
blocks = len(data) // 8 # number of blocks in row
|
||||
ret = (bytearray(), bytearray(), bytearray(), bytearray())
|
||||
|
||||
for block_index in range(blocks):
|
||||
# Decode next 8-byte block.
|
||||
idx = block_index * 8
|
||||
color0, color1, bits = struct.unpack_from("<HHI", data, idx)
|
||||
|
||||
r0, g0, b0 = unpack_565(color0)
|
||||
r1, g1, b1 = unpack_565(color1)
|
||||
|
||||
# Decode this block into 4x4 pixels
|
||||
# Accumulate the results onto our 4 row accumulators
|
||||
for j in range(4):
|
||||
for i in range(4):
|
||||
# get next control op and generate a pixel
|
||||
|
||||
control = bits & 3
|
||||
bits = bits >> 2
|
||||
|
||||
a = 0xFF
|
||||
if control == 0:
|
||||
r, g, b = r0, g0, b0
|
||||
elif control == 1:
|
||||
r, g, b = r1, g1, b1
|
||||
elif control == 2:
|
||||
if color0 > color1:
|
||||
r = (2 * r0 + r1) // 3
|
||||
g = (2 * g0 + g1) // 3
|
||||
b = (2 * b0 + b1) // 3
|
||||
else:
|
||||
r = (r0 + r1) // 2
|
||||
g = (g0 + g1) // 2
|
||||
b = (b0 + b1) // 2
|
||||
elif control == 3:
|
||||
if color0 > color1:
|
||||
r = (2 * r1 + r0) // 3
|
||||
g = (2 * g1 + g0) // 3
|
||||
b = (2 * b1 + b0) // 3
|
||||
else:
|
||||
r, g, b, a = 0, 0, 0, 0
|
||||
|
||||
if alpha:
|
||||
ret[j].extend([r, g, b, a])
|
||||
else:
|
||||
ret[j].extend([r, g, b])
|
||||
|
||||
return ret
|
||||
|
||||
|
||||
def decode_dxt3(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
|
||||
"""
|
||||
input: one "row" of data (i.e. will produce 4*width pixels)
|
||||
"""
|
||||
|
||||
blocks = len(data) // 16 # number of blocks in row
|
||||
ret = (bytearray(), bytearray(), bytearray(), bytearray())
|
||||
|
||||
for block_index in range(blocks):
|
||||
idx = block_index * 16
|
||||
block = data[idx : idx + 16]
|
||||
# Decode next 16-byte block.
|
||||
bits = struct.unpack_from("<8B", block)
|
||||
color0, color1 = struct.unpack_from("<HH", block, 8)
|
||||
|
||||
(code,) = struct.unpack_from("<I", block, 12)
|
||||
|
||||
r0, g0, b0 = unpack_565(color0)
|
||||
r1, g1, b1 = unpack_565(color1)
|
||||
|
||||
for j in range(4):
|
||||
high = False # Do we want the higher bits?
|
||||
for i in range(4):
|
||||
alphacode_index = (4 * j + i) // 2
|
||||
a = bits[alphacode_index]
|
||||
if high:
|
||||
high = False
|
||||
a >>= 4
|
||||
else:
|
||||
high = True
|
||||
a &= 0xF
|
||||
a *= 17 # We get a value between 0 and 15
|
||||
|
||||
color_code = (code >> 2 * (4 * j + i)) & 0x03
|
||||
|
||||
if color_code == 0:
|
||||
r, g, b = r0, g0, b0
|
||||
elif color_code == 1:
|
||||
r, g, b = r1, g1, b1
|
||||
elif color_code == 2:
|
||||
r = (2 * r0 + r1) // 3
|
||||
g = (2 * g0 + g1) // 3
|
||||
b = (2 * b0 + b1) // 3
|
||||
elif color_code == 3:
|
||||
r = (2 * r1 + r0) // 3
|
||||
g = (2 * g1 + g0) // 3
|
||||
b = (2 * b1 + b0) // 3
|
||||
|
||||
ret[j].extend([r, g, b, a])
|
||||
|
||||
return ret
|
||||
|
||||
|
||||
def decode_dxt5(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
|
||||
"""
|
||||
input: one "row" of data (i.e. will produce 4 * width pixels)
|
||||
"""
|
||||
|
||||
blocks = len(data) // 16 # number of blocks in row
|
||||
ret = (bytearray(), bytearray(), bytearray(), bytearray())
|
||||
|
||||
for block_index in range(blocks):
|
||||
idx = block_index * 16
|
||||
block = data[idx : idx + 16]
|
||||
# Decode next 16-byte block.
|
||||
a0, a1 = struct.unpack_from("<BB", block)
|
||||
|
||||
bits = struct.unpack_from("<6B", block, 2)
|
||||
alphacode1 = bits[2] | (bits[3] << 8) | (bits[4] << 16) | (bits[5] << 24)
|
||||
alphacode2 = bits[0] | (bits[1] << 8)
|
||||
|
||||
color0, color1 = struct.unpack_from("<HH", block, 8)
|
||||
|
||||
(code,) = struct.unpack_from("<I", block, 12)
|
||||
|
||||
r0, g0, b0 = unpack_565(color0)
|
||||
r1, g1, b1 = unpack_565(color1)
|
||||
|
||||
for j in range(4):
|
||||
for i in range(4):
|
||||
# get next control op and generate a pixel
|
||||
alphacode_index = 3 * (4 * j + i)
|
||||
|
||||
if alphacode_index <= 12:
|
||||
alphacode = (alphacode2 >> alphacode_index) & 0x07
|
||||
elif alphacode_index == 15:
|
||||
alphacode = (alphacode2 >> 15) | ((alphacode1 << 1) & 0x06)
|
||||
else: # alphacode_index >= 18 and alphacode_index <= 45
|
||||
alphacode = (alphacode1 >> (alphacode_index - 16)) & 0x07
|
||||
|
||||
if alphacode == 0:
|
||||
a = a0
|
||||
elif alphacode == 1:
|
||||
a = a1
|
||||
elif a0 > a1:
|
||||
a = ((8 - alphacode) * a0 + (alphacode - 1) * a1) // 7
|
||||
elif alphacode == 6:
|
||||
a = 0
|
||||
elif alphacode == 7:
|
||||
a = 255
|
||||
else:
|
||||
a = ((6 - alphacode) * a0 + (alphacode - 1) * a1) // 5
|
||||
|
||||
color_code = (code >> 2 * (4 * j + i)) & 0x03
|
||||
|
||||
if color_code == 0:
|
||||
r, g, b = r0, g0, b0
|
||||
elif color_code == 1:
|
||||
r, g, b = r1, g1, b1
|
||||
elif color_code == 2:
|
||||
r = (2 * r0 + r1) // 3
|
||||
g = (2 * g0 + g1) // 3
|
||||
b = (2 * b0 + b1) // 3
|
||||
elif color_code == 3:
|
||||
r = (2 * r1 + r0) // 3
|
||||
g = (2 * g1 + g0) // 3
|
||||
b = (2 * b1 + b0) // 3
|
||||
|
||||
ret[j].extend([r, g, b, a])
|
||||
|
||||
return ret
|
||||
|
||||
|
||||
class BLPFormatError(NotImplementedError):
|
||||
pass
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith((b"BLP1", b"BLP2"))
|
||||
|
||||
|
||||
class BlpImageFile(ImageFile.ImageFile):
|
||||
"""
|
||||
Blizzard Mipmap Format
|
||||
"""
|
||||
|
||||
format = "BLP"
|
||||
format_description = "Blizzard Mipmap Format"
|
||||
|
||||
def _open(self) -> None:
|
||||
self.magic = self.fp.read(4)
|
||||
if not _accept(self.magic):
|
||||
msg = f"Bad BLP magic {repr(self.magic)}"
|
||||
raise BLPFormatError(msg)
|
||||
|
||||
compression = struct.unpack("<i", self.fp.read(4))[0]
|
||||
if self.magic == b"BLP1":
|
||||
alpha = struct.unpack("<I", self.fp.read(4))[0] != 0
|
||||
else:
|
||||
encoding = struct.unpack("<b", self.fp.read(1))[0]
|
||||
alpha = struct.unpack("<b", self.fp.read(1))[0] != 0
|
||||
alpha_encoding = struct.unpack("<b", self.fp.read(1))[0]
|
||||
self.fp.seek(1, os.SEEK_CUR) # mips
|
||||
|
||||
self._size = struct.unpack("<II", self.fp.read(8))
|
||||
|
||||
args: tuple[int, int, bool] | tuple[int, int, bool, int]
|
||||
if self.magic == b"BLP1":
|
||||
encoding = struct.unpack("<i", self.fp.read(4))[0]
|
||||
self.fp.seek(4, os.SEEK_CUR) # subtype
|
||||
|
||||
args = (compression, encoding, alpha)
|
||||
offset = 28
|
||||
else:
|
||||
args = (compression, encoding, alpha, alpha_encoding)
|
||||
offset = 20
|
||||
|
||||
decoder = self.magic.decode()
|
||||
|
||||
self._mode = "RGBA" if alpha else "RGB"
|
||||
self.tile = [ImageFile._Tile(decoder, (0, 0) + self.size, offset, args)]
|
||||
|
||||
|
||||
class _BLPBaseDecoder(abc.ABC, ImageFile.PyDecoder):
|
||||
_pulls_fd = True
|
||||
|
||||
def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
|
||||
try:
|
||||
self._read_header()
|
||||
self._load()
|
||||
except struct.error as e:
|
||||
msg = "Truncated BLP file"
|
||||
raise OSError(msg) from e
|
||||
return -1, 0
|
||||
|
||||
@abc.abstractmethod
|
||||
def _load(self) -> None:
|
||||
pass
|
||||
|
||||
def _read_header(self) -> None:
|
||||
self._offsets = struct.unpack("<16I", self._safe_read(16 * 4))
|
||||
self._lengths = struct.unpack("<16I", self._safe_read(16 * 4))
|
||||
|
||||
def _safe_read(self, length: int) -> bytes:
|
||||
assert self.fd is not None
|
||||
return ImageFile._safe_read(self.fd, length)
|
||||
|
||||
def _read_palette(self) -> list[tuple[int, int, int, int]]:
|
||||
ret = []
|
||||
for i in range(256):
|
||||
try:
|
||||
b, g, r, a = struct.unpack("<4B", self._safe_read(4))
|
||||
except struct.error:
|
||||
break
|
||||
ret.append((b, g, r, a))
|
||||
return ret
|
||||
|
||||
def _read_bgra(
|
||||
self, palette: list[tuple[int, int, int, int]], alpha: bool
|
||||
) -> bytearray:
|
||||
data = bytearray()
|
||||
_data = BytesIO(self._safe_read(self._lengths[0]))
|
||||
while True:
|
||||
try:
|
||||
(offset,) = struct.unpack("<B", _data.read(1))
|
||||
except struct.error:
|
||||
break
|
||||
b, g, r, a = palette[offset]
|
||||
d: tuple[int, ...] = (r, g, b)
|
||||
if alpha:
|
||||
d += (a,)
|
||||
data.extend(d)
|
||||
return data
|
||||
|
||||
|
||||
class BLP1Decoder(_BLPBaseDecoder):
|
||||
def _load(self) -> None:
|
||||
self._compression, self._encoding, alpha = self.args
|
||||
|
||||
if self._compression == Format.JPEG:
|
||||
self._decode_jpeg_stream()
|
||||
|
||||
elif self._compression == 1:
|
||||
if self._encoding in (4, 5):
|
||||
palette = self._read_palette()
|
||||
data = self._read_bgra(palette, alpha)
|
||||
self.set_as_raw(data)
|
||||
else:
|
||||
msg = f"Unsupported BLP encoding {repr(self._encoding)}"
|
||||
raise BLPFormatError(msg)
|
||||
else:
|
||||
msg = f"Unsupported BLP compression {repr(self._encoding)}"
|
||||
raise BLPFormatError(msg)
|
||||
|
||||
def _decode_jpeg_stream(self) -> None:
|
||||
from .JpegImagePlugin import JpegImageFile
|
||||
|
||||
(jpeg_header_size,) = struct.unpack("<I", self._safe_read(4))
|
||||
jpeg_header = self._safe_read(jpeg_header_size)
|
||||
assert self.fd is not None
|
||||
self._safe_read(self._offsets[0] - self.fd.tell()) # What IS this?
|
||||
data = self._safe_read(self._lengths[0])
|
||||
data = jpeg_header + data
|
||||
image = JpegImageFile(BytesIO(data))
|
||||
Image._decompression_bomb_check(image.size)
|
||||
if image.mode == "CMYK":
|
||||
args = image.tile[0].args
|
||||
assert isinstance(args, tuple)
|
||||
image.tile = [image.tile[0]._replace(args=(args[0], "CMYK"))]
|
||||
self.set_as_raw(image.convert("RGB").tobytes(), "BGR")
|
||||
|
||||
|
||||
class BLP2Decoder(_BLPBaseDecoder):
|
||||
def _load(self) -> None:
|
||||
self._compression, self._encoding, alpha, self._alpha_encoding = self.args
|
||||
|
||||
palette = self._read_palette()
|
||||
|
||||
assert self.fd is not None
|
||||
self.fd.seek(self._offsets[0])
|
||||
|
||||
if self._compression == 1:
|
||||
# Uncompressed or DirectX compression
|
||||
|
||||
if self._encoding == Encoding.UNCOMPRESSED:
|
||||
data = self._read_bgra(palette, alpha)
|
||||
|
||||
elif self._encoding == Encoding.DXT:
|
||||
data = bytearray()
|
||||
if self._alpha_encoding == AlphaEncoding.DXT1:
|
||||
linesize = (self.state.xsize + 3) // 4 * 8
|
||||
for yb in range((self.state.ysize + 3) // 4):
|
||||
for d in decode_dxt1(self._safe_read(linesize), alpha):
|
||||
data += d
|
||||
|
||||
elif self._alpha_encoding == AlphaEncoding.DXT3:
|
||||
linesize = (self.state.xsize + 3) // 4 * 16
|
||||
for yb in range((self.state.ysize + 3) // 4):
|
||||
for d in decode_dxt3(self._safe_read(linesize)):
|
||||
data += d
|
||||
|
||||
elif self._alpha_encoding == AlphaEncoding.DXT5:
|
||||
linesize = (self.state.xsize + 3) // 4 * 16
|
||||
for yb in range((self.state.ysize + 3) // 4):
|
||||
for d in decode_dxt5(self._safe_read(linesize)):
|
||||
data += d
|
||||
else:
|
||||
msg = f"Unsupported alpha encoding {repr(self._alpha_encoding)}"
|
||||
raise BLPFormatError(msg)
|
||||
else:
|
||||
msg = f"Unknown BLP encoding {repr(self._encoding)}"
|
||||
raise BLPFormatError(msg)
|
||||
|
||||
else:
|
||||
msg = f"Unknown BLP compression {repr(self._compression)}"
|
||||
raise BLPFormatError(msg)
|
||||
|
||||
self.set_as_raw(data)
|
||||
|
||||
|
||||
class BLPEncoder(ImageFile.PyEncoder):
|
||||
_pushes_fd = True
|
||||
|
||||
def _write_palette(self) -> bytes:
|
||||
data = b""
|
||||
assert self.im is not None
|
||||
palette = self.im.getpalette("RGBA", "RGBA")
|
||||
for i in range(len(palette) // 4):
|
||||
r, g, b, a = palette[i * 4 : (i + 1) * 4]
|
||||
data += struct.pack("<4B", b, g, r, a)
|
||||
while len(data) < 256 * 4:
|
||||
data += b"\x00" * 4
|
||||
return data
|
||||
|
||||
def encode(self, bufsize: int) -> tuple[int, int, bytes]:
|
||||
palette_data = self._write_palette()
|
||||
|
||||
offset = 20 + 16 * 4 * 2 + len(palette_data)
|
||||
data = struct.pack("<16I", offset, *((0,) * 15))
|
||||
|
||||
assert self.im is not None
|
||||
w, h = self.im.size
|
||||
data += struct.pack("<16I", w * h, *((0,) * 15))
|
||||
|
||||
data += palette_data
|
||||
|
||||
for y in range(h):
|
||||
for x in range(w):
|
||||
data += struct.pack("<B", self.im.getpixel((x, y)))
|
||||
|
||||
return len(data), 0, data
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
if im.mode != "P":
|
||||
msg = "Unsupported BLP image mode"
|
||||
raise ValueError(msg)
|
||||
|
||||
magic = b"BLP1" if im.encoderinfo.get("blp_version") == "BLP1" else b"BLP2"
|
||||
fp.write(magic)
|
||||
|
||||
assert im.palette is not None
|
||||
fp.write(struct.pack("<i", 1)) # Uncompressed or DirectX compression
|
||||
|
||||
alpha_depth = 1 if im.palette.mode == "RGBA" else 0
|
||||
if magic == b"BLP1":
|
||||
fp.write(struct.pack("<L", alpha_depth))
|
||||
else:
|
||||
fp.write(struct.pack("<b", Encoding.UNCOMPRESSED))
|
||||
fp.write(struct.pack("<b", alpha_depth))
|
||||
fp.write(struct.pack("<b", 0)) # alpha encoding
|
||||
fp.write(struct.pack("<b", 0)) # mips
|
||||
fp.write(struct.pack("<II", *im.size))
|
||||
if magic == b"BLP1":
|
||||
fp.write(struct.pack("<i", 5))
|
||||
fp.write(struct.pack("<i", 0))
|
||||
|
||||
ImageFile._save(im, fp, [ImageFile._Tile("BLP", (0, 0) + im.size, 0, im.mode)])
|
||||
|
||||
|
||||
Image.register_open(BlpImageFile.format, BlpImageFile, _accept)
|
||||
Image.register_extension(BlpImageFile.format, ".blp")
|
||||
Image.register_decoder("BLP1", BLP1Decoder)
|
||||
Image.register_decoder("BLP2", BLP2Decoder)
|
||||
|
||||
Image.register_save(BlpImageFile.format, _save)
|
||||
Image.register_encoder("BLP", BLPEncoder)
|
||||
@ -0,0 +1,515 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# BMP file handler
|
||||
#
|
||||
# Windows (and OS/2) native bitmap storage format.
|
||||
#
|
||||
# history:
|
||||
# 1995-09-01 fl Created
|
||||
# 1996-04-30 fl Added save
|
||||
# 1997-08-27 fl Fixed save of 1-bit images
|
||||
# 1998-03-06 fl Load P images as L where possible
|
||||
# 1998-07-03 fl Load P images as 1 where possible
|
||||
# 1998-12-29 fl Handle small palettes
|
||||
# 2002-12-30 fl Fixed load of 1-bit palette images
|
||||
# 2003-04-21 fl Fixed load of 1-bit monochrome images
|
||||
# 2003-04-23 fl Added limited support for BI_BITFIELDS compression
|
||||
#
|
||||
# Copyright (c) 1997-2003 by Secret Labs AB
|
||||
# Copyright (c) 1995-2003 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
from typing import IO, Any
|
||||
|
||||
from . import Image, ImageFile, ImagePalette
|
||||
from ._binary import i16le as i16
|
||||
from ._binary import i32le as i32
|
||||
from ._binary import o8
|
||||
from ._binary import o16le as o16
|
||||
from ._binary import o32le as o32
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
# Read BMP file
|
||||
|
||||
BIT2MODE = {
|
||||
# bits => mode, rawmode
|
||||
1: ("P", "P;1"),
|
||||
4: ("P", "P;4"),
|
||||
8: ("P", "P"),
|
||||
16: ("RGB", "BGR;15"),
|
||||
24: ("RGB", "BGR"),
|
||||
32: ("RGB", "BGRX"),
|
||||
}
|
||||
|
||||
USE_RAW_ALPHA = False
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(b"BM")
|
||||
|
||||
|
||||
def _dib_accept(prefix: bytes) -> bool:
|
||||
return i32(prefix) in [12, 40, 52, 56, 64, 108, 124]
|
||||
|
||||
|
||||
# =============================================================================
|
||||
# Image plugin for the Windows BMP format.
|
||||
# =============================================================================
|
||||
class BmpImageFile(ImageFile.ImageFile):
|
||||
"""Image plugin for the Windows Bitmap format (BMP)"""
|
||||
|
||||
# ------------------------------------------------------------- Description
|
||||
format_description = "Windows Bitmap"
|
||||
format = "BMP"
|
||||
|
||||
# -------------------------------------------------- BMP Compression values
|
||||
COMPRESSIONS = {"RAW": 0, "RLE8": 1, "RLE4": 2, "BITFIELDS": 3, "JPEG": 4, "PNG": 5}
|
||||
for k, v in COMPRESSIONS.items():
|
||||
vars()[k] = v
|
||||
|
||||
def _bitmap(self, header: int = 0, offset: int = 0) -> None:
|
||||
"""Read relevant info about the BMP"""
|
||||
read, seek = self.fp.read, self.fp.seek
|
||||
if header:
|
||||
seek(header)
|
||||
# read bmp header size @offset 14 (this is part of the header size)
|
||||
file_info: dict[str, bool | int | tuple[int, ...]] = {
|
||||
"header_size": i32(read(4)),
|
||||
"direction": -1,
|
||||
}
|
||||
|
||||
# -------------------- If requested, read header at a specific position
|
||||
# read the rest of the bmp header, without its size
|
||||
assert isinstance(file_info["header_size"], int)
|
||||
header_data = ImageFile._safe_read(self.fp, file_info["header_size"] - 4)
|
||||
|
||||
# ------------------------------- Windows Bitmap v2, IBM OS/2 Bitmap v1
|
||||
# ----- This format has different offsets because of width/height types
|
||||
# 12: BITMAPCOREHEADER/OS21XBITMAPHEADER
|
||||
if file_info["header_size"] == 12:
|
||||
file_info["width"] = i16(header_data, 0)
|
||||
file_info["height"] = i16(header_data, 2)
|
||||
file_info["planes"] = i16(header_data, 4)
|
||||
file_info["bits"] = i16(header_data, 6)
|
||||
file_info["compression"] = self.COMPRESSIONS["RAW"]
|
||||
file_info["palette_padding"] = 3
|
||||
|
||||
# --------------------------------------------- Windows Bitmap v3 to v5
|
||||
# 40: BITMAPINFOHEADER
|
||||
# 52: BITMAPV2HEADER
|
||||
# 56: BITMAPV3HEADER
|
||||
# 64: BITMAPCOREHEADER2/OS22XBITMAPHEADER
|
||||
# 108: BITMAPV4HEADER
|
||||
# 124: BITMAPV5HEADER
|
||||
elif file_info["header_size"] in (40, 52, 56, 64, 108, 124):
|
||||
file_info["y_flip"] = header_data[7] == 0xFF
|
||||
file_info["direction"] = 1 if file_info["y_flip"] else -1
|
||||
file_info["width"] = i32(header_data, 0)
|
||||
file_info["height"] = (
|
||||
i32(header_data, 4)
|
||||
if not file_info["y_flip"]
|
||||
else 2**32 - i32(header_data, 4)
|
||||
)
|
||||
file_info["planes"] = i16(header_data, 8)
|
||||
file_info["bits"] = i16(header_data, 10)
|
||||
file_info["compression"] = i32(header_data, 12)
|
||||
# byte size of pixel data
|
||||
file_info["data_size"] = i32(header_data, 16)
|
||||
file_info["pixels_per_meter"] = (
|
||||
i32(header_data, 20),
|
||||
i32(header_data, 24),
|
||||
)
|
||||
file_info["colors"] = i32(header_data, 28)
|
||||
file_info["palette_padding"] = 4
|
||||
assert isinstance(file_info["pixels_per_meter"], tuple)
|
||||
self.info["dpi"] = tuple(x / 39.3701 for x in file_info["pixels_per_meter"])
|
||||
if file_info["compression"] == self.COMPRESSIONS["BITFIELDS"]:
|
||||
masks = ["r_mask", "g_mask", "b_mask"]
|
||||
if len(header_data) >= 48:
|
||||
if len(header_data) >= 52:
|
||||
masks.append("a_mask")
|
||||
else:
|
||||
file_info["a_mask"] = 0x0
|
||||
for idx, mask in enumerate(masks):
|
||||
file_info[mask] = i32(header_data, 36 + idx * 4)
|
||||
else:
|
||||
# 40 byte headers only have the three components in the
|
||||
# bitfields masks, ref:
|
||||
# https://msdn.microsoft.com/en-us/library/windows/desktop/dd183376(v=vs.85).aspx
|
||||
# See also
|
||||
# https://github.com/python-pillow/Pillow/issues/1293
|
||||
# There is a 4th component in the RGBQuad, in the alpha
|
||||
# location, but it is listed as a reserved component,
|
||||
# and it is not generally an alpha channel
|
||||
file_info["a_mask"] = 0x0
|
||||
for mask in masks:
|
||||
file_info[mask] = i32(read(4))
|
||||
assert isinstance(file_info["r_mask"], int)
|
||||
assert isinstance(file_info["g_mask"], int)
|
||||
assert isinstance(file_info["b_mask"], int)
|
||||
assert isinstance(file_info["a_mask"], int)
|
||||
file_info["rgb_mask"] = (
|
||||
file_info["r_mask"],
|
||||
file_info["g_mask"],
|
||||
file_info["b_mask"],
|
||||
)
|
||||
file_info["rgba_mask"] = (
|
||||
file_info["r_mask"],
|
||||
file_info["g_mask"],
|
||||
file_info["b_mask"],
|
||||
file_info["a_mask"],
|
||||
)
|
||||
else:
|
||||
msg = f"Unsupported BMP header type ({file_info['header_size']})"
|
||||
raise OSError(msg)
|
||||
|
||||
# ------------------ Special case : header is reported 40, which
|
||||
# ---------------------- is shorter than real size for bpp >= 16
|
||||
assert isinstance(file_info["width"], int)
|
||||
assert isinstance(file_info["height"], int)
|
||||
self._size = file_info["width"], file_info["height"]
|
||||
|
||||
# ------- If color count was not found in the header, compute from bits
|
||||
assert isinstance(file_info["bits"], int)
|
||||
file_info["colors"] = (
|
||||
file_info["colors"]
|
||||
if file_info.get("colors", 0)
|
||||
else (1 << file_info["bits"])
|
||||
)
|
||||
assert isinstance(file_info["colors"], int)
|
||||
if offset == 14 + file_info["header_size"] and file_info["bits"] <= 8:
|
||||
offset += 4 * file_info["colors"]
|
||||
|
||||
# ---------------------- Check bit depth for unusual unsupported values
|
||||
self._mode, raw_mode = BIT2MODE.get(file_info["bits"], ("", ""))
|
||||
if not self.mode:
|
||||
msg = f"Unsupported BMP pixel depth ({file_info['bits']})"
|
||||
raise OSError(msg)
|
||||
|
||||
# ---------------- Process BMP with Bitfields compression (not palette)
|
||||
decoder_name = "raw"
|
||||
if file_info["compression"] == self.COMPRESSIONS["BITFIELDS"]:
|
||||
SUPPORTED: dict[int, list[tuple[int, ...]]] = {
|
||||
32: [
|
||||
(0xFF0000, 0xFF00, 0xFF, 0x0),
|
||||
(0xFF000000, 0xFF0000, 0xFF00, 0x0),
|
||||
(0xFF000000, 0xFF00, 0xFF, 0x0),
|
||||
(0xFF000000, 0xFF0000, 0xFF00, 0xFF),
|
||||
(0xFF, 0xFF00, 0xFF0000, 0xFF000000),
|
||||
(0xFF0000, 0xFF00, 0xFF, 0xFF000000),
|
||||
(0xFF000000, 0xFF00, 0xFF, 0xFF0000),
|
||||
(0x0, 0x0, 0x0, 0x0),
|
||||
],
|
||||
24: [(0xFF0000, 0xFF00, 0xFF)],
|
||||
16: [(0xF800, 0x7E0, 0x1F), (0x7C00, 0x3E0, 0x1F)],
|
||||
}
|
||||
MASK_MODES = {
|
||||
(32, (0xFF0000, 0xFF00, 0xFF, 0x0)): "BGRX",
|
||||
(32, (0xFF000000, 0xFF0000, 0xFF00, 0x0)): "XBGR",
|
||||
(32, (0xFF000000, 0xFF00, 0xFF, 0x0)): "BGXR",
|
||||
(32, (0xFF000000, 0xFF0000, 0xFF00, 0xFF)): "ABGR",
|
||||
(32, (0xFF, 0xFF00, 0xFF0000, 0xFF000000)): "RGBA",
|
||||
(32, (0xFF0000, 0xFF00, 0xFF, 0xFF000000)): "BGRA",
|
||||
(32, (0xFF000000, 0xFF00, 0xFF, 0xFF0000)): "BGAR",
|
||||
(32, (0x0, 0x0, 0x0, 0x0)): "BGRA",
|
||||
(24, (0xFF0000, 0xFF00, 0xFF)): "BGR",
|
||||
(16, (0xF800, 0x7E0, 0x1F)): "BGR;16",
|
||||
(16, (0x7C00, 0x3E0, 0x1F)): "BGR;15",
|
||||
}
|
||||
if file_info["bits"] in SUPPORTED:
|
||||
if (
|
||||
file_info["bits"] == 32
|
||||
and file_info["rgba_mask"] in SUPPORTED[file_info["bits"]]
|
||||
):
|
||||
assert isinstance(file_info["rgba_mask"], tuple)
|
||||
raw_mode = MASK_MODES[(file_info["bits"], file_info["rgba_mask"])]
|
||||
self._mode = "RGBA" if "A" in raw_mode else self.mode
|
||||
elif (
|
||||
file_info["bits"] in (24, 16)
|
||||
and file_info["rgb_mask"] in SUPPORTED[file_info["bits"]]
|
||||
):
|
||||
assert isinstance(file_info["rgb_mask"], tuple)
|
||||
raw_mode = MASK_MODES[(file_info["bits"], file_info["rgb_mask"])]
|
||||
else:
|
||||
msg = "Unsupported BMP bitfields layout"
|
||||
raise OSError(msg)
|
||||
else:
|
||||
msg = "Unsupported BMP bitfields layout"
|
||||
raise OSError(msg)
|
||||
elif file_info["compression"] == self.COMPRESSIONS["RAW"]:
|
||||
if file_info["bits"] == 32 and (
|
||||
header == 22 or USE_RAW_ALPHA # 32-bit .cur offset
|
||||
):
|
||||
raw_mode, self._mode = "BGRA", "RGBA"
|
||||
elif file_info["compression"] in (
|
||||
self.COMPRESSIONS["RLE8"],
|
||||
self.COMPRESSIONS["RLE4"],
|
||||
):
|
||||
decoder_name = "bmp_rle"
|
||||
else:
|
||||
msg = f"Unsupported BMP compression ({file_info['compression']})"
|
||||
raise OSError(msg)
|
||||
|
||||
# --------------- Once the header is processed, process the palette/LUT
|
||||
if self.mode == "P": # Paletted for 1, 4 and 8 bit images
|
||||
# ---------------------------------------------------- 1-bit images
|
||||
if not (0 < file_info["colors"] <= 65536):
|
||||
msg = f"Unsupported BMP Palette size ({file_info['colors']})"
|
||||
raise OSError(msg)
|
||||
else:
|
||||
assert isinstance(file_info["palette_padding"], int)
|
||||
padding = file_info["palette_padding"]
|
||||
palette = read(padding * file_info["colors"])
|
||||
grayscale = True
|
||||
indices = (
|
||||
(0, 255)
|
||||
if file_info["colors"] == 2
|
||||
else list(range(file_info["colors"]))
|
||||
)
|
||||
|
||||
# ----------------- Check if grayscale and ignore palette if so
|
||||
for ind, val in enumerate(indices):
|
||||
rgb = palette[ind * padding : ind * padding + 3]
|
||||
if rgb != o8(val) * 3:
|
||||
grayscale = False
|
||||
|
||||
# ------- If all colors are gray, white or black, ditch palette
|
||||
if grayscale:
|
||||
self._mode = "1" if file_info["colors"] == 2 else "L"
|
||||
raw_mode = self.mode
|
||||
else:
|
||||
self._mode = "P"
|
||||
self.palette = ImagePalette.raw(
|
||||
"BGRX" if padding == 4 else "BGR", palette
|
||||
)
|
||||
|
||||
# ---------------------------- Finally set the tile data for the plugin
|
||||
self.info["compression"] = file_info["compression"]
|
||||
args: list[Any] = [raw_mode]
|
||||
if decoder_name == "bmp_rle":
|
||||
args.append(file_info["compression"] == self.COMPRESSIONS["RLE4"])
|
||||
else:
|
||||
assert isinstance(file_info["width"], int)
|
||||
args.append(((file_info["width"] * file_info["bits"] + 31) >> 3) & (~3))
|
||||
args.append(file_info["direction"])
|
||||
self.tile = [
|
||||
ImageFile._Tile(
|
||||
decoder_name,
|
||||
(0, 0, file_info["width"], file_info["height"]),
|
||||
offset or self.fp.tell(),
|
||||
tuple(args),
|
||||
)
|
||||
]
|
||||
|
||||
def _open(self) -> None:
|
||||
"""Open file, check magic number and read header"""
|
||||
# read 14 bytes: magic number, filesize, reserved, header final offset
|
||||
head_data = self.fp.read(14)
|
||||
# choke if the file does not have the required magic bytes
|
||||
if not _accept(head_data):
|
||||
msg = "Not a BMP file"
|
||||
raise SyntaxError(msg)
|
||||
# read the start position of the BMP image data (u32)
|
||||
offset = i32(head_data, 10)
|
||||
# load bitmap information (offset=raster info)
|
||||
self._bitmap(offset=offset)
|
||||
|
||||
|
||||
class BmpRleDecoder(ImageFile.PyDecoder):
|
||||
_pulls_fd = True
|
||||
|
||||
def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
|
||||
assert self.fd is not None
|
||||
rle4 = self.args[1]
|
||||
data = bytearray()
|
||||
x = 0
|
||||
dest_length = self.state.xsize * self.state.ysize
|
||||
while len(data) < dest_length:
|
||||
pixels = self.fd.read(1)
|
||||
byte = self.fd.read(1)
|
||||
if not pixels or not byte:
|
||||
break
|
||||
num_pixels = pixels[0]
|
||||
if num_pixels:
|
||||
# encoded mode
|
||||
if x + num_pixels > self.state.xsize:
|
||||
# Too much data for row
|
||||
num_pixels = max(0, self.state.xsize - x)
|
||||
if rle4:
|
||||
first_pixel = o8(byte[0] >> 4)
|
||||
second_pixel = o8(byte[0] & 0x0F)
|
||||
for index in range(num_pixels):
|
||||
if index % 2 == 0:
|
||||
data += first_pixel
|
||||
else:
|
||||
data += second_pixel
|
||||
else:
|
||||
data += byte * num_pixels
|
||||
x += num_pixels
|
||||
else:
|
||||
if byte[0] == 0:
|
||||
# end of line
|
||||
while len(data) % self.state.xsize != 0:
|
||||
data += b"\x00"
|
||||
x = 0
|
||||
elif byte[0] == 1:
|
||||
# end of bitmap
|
||||
break
|
||||
elif byte[0] == 2:
|
||||
# delta
|
||||
bytes_read = self.fd.read(2)
|
||||
if len(bytes_read) < 2:
|
||||
break
|
||||
right, up = self.fd.read(2)
|
||||
data += b"\x00" * (right + up * self.state.xsize)
|
||||
x = len(data) % self.state.xsize
|
||||
else:
|
||||
# absolute mode
|
||||
if rle4:
|
||||
# 2 pixels per byte
|
||||
byte_count = byte[0] // 2
|
||||
bytes_read = self.fd.read(byte_count)
|
||||
for byte_read in bytes_read:
|
||||
data += o8(byte_read >> 4)
|
||||
data += o8(byte_read & 0x0F)
|
||||
else:
|
||||
byte_count = byte[0]
|
||||
bytes_read = self.fd.read(byte_count)
|
||||
data += bytes_read
|
||||
if len(bytes_read) < byte_count:
|
||||
break
|
||||
x += byte[0]
|
||||
|
||||
# align to 16-bit word boundary
|
||||
if self.fd.tell() % 2 != 0:
|
||||
self.fd.seek(1, os.SEEK_CUR)
|
||||
rawmode = "L" if self.mode == "L" else "P"
|
||||
self.set_as_raw(bytes(data), rawmode, (0, self.args[-1]))
|
||||
return -1, 0
|
||||
|
||||
|
||||
# =============================================================================
|
||||
# Image plugin for the DIB format (BMP alias)
|
||||
# =============================================================================
|
||||
class DibImageFile(BmpImageFile):
|
||||
format = "DIB"
|
||||
format_description = "Windows Bitmap"
|
||||
|
||||
def _open(self) -> None:
|
||||
self._bitmap()
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
# Write BMP file
|
||||
|
||||
|
||||
SAVE = {
|
||||
"1": ("1", 1, 2),
|
||||
"L": ("L", 8, 256),
|
||||
"P": ("P", 8, 256),
|
||||
"RGB": ("BGR", 24, 0),
|
||||
"RGBA": ("BGRA", 32, 0),
|
||||
}
|
||||
|
||||
|
||||
def _dib_save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
_save(im, fp, filename, False)
|
||||
|
||||
|
||||
def _save(
|
||||
im: Image.Image, fp: IO[bytes], filename: str | bytes, bitmap_header: bool = True
|
||||
) -> None:
|
||||
try:
|
||||
rawmode, bits, colors = SAVE[im.mode]
|
||||
except KeyError as e:
|
||||
msg = f"cannot write mode {im.mode} as BMP"
|
||||
raise OSError(msg) from e
|
||||
|
||||
info = im.encoderinfo
|
||||
|
||||
dpi = info.get("dpi", (96, 96))
|
||||
|
||||
# 1 meter == 39.3701 inches
|
||||
ppm = tuple(int(x * 39.3701 + 0.5) for x in dpi)
|
||||
|
||||
stride = ((im.size[0] * bits + 7) // 8 + 3) & (~3)
|
||||
header = 40 # or 64 for OS/2 version 2
|
||||
image = stride * im.size[1]
|
||||
|
||||
if im.mode == "1":
|
||||
palette = b"".join(o8(i) * 3 + b"\x00" for i in (0, 255))
|
||||
elif im.mode == "L":
|
||||
palette = b"".join(o8(i) * 3 + b"\x00" for i in range(256))
|
||||
elif im.mode == "P":
|
||||
palette = im.im.getpalette("RGB", "BGRX")
|
||||
colors = len(palette) // 4
|
||||
else:
|
||||
palette = None
|
||||
|
||||
# bitmap header
|
||||
if bitmap_header:
|
||||
offset = 14 + header + colors * 4
|
||||
file_size = offset + image
|
||||
if file_size > 2**32 - 1:
|
||||
msg = "File size is too large for the BMP format"
|
||||
raise ValueError(msg)
|
||||
fp.write(
|
||||
b"BM" # file type (magic)
|
||||
+ o32(file_size) # file size
|
||||
+ o32(0) # reserved
|
||||
+ o32(offset) # image data offset
|
||||
)
|
||||
|
||||
# bitmap info header
|
||||
fp.write(
|
||||
o32(header) # info header size
|
||||
+ o32(im.size[0]) # width
|
||||
+ o32(im.size[1]) # height
|
||||
+ o16(1) # planes
|
||||
+ o16(bits) # depth
|
||||
+ o32(0) # compression (0=uncompressed)
|
||||
+ o32(image) # size of bitmap
|
||||
+ o32(ppm[0]) # resolution
|
||||
+ o32(ppm[1]) # resolution
|
||||
+ o32(colors) # colors used
|
||||
+ o32(colors) # colors important
|
||||
)
|
||||
|
||||
fp.write(b"\0" * (header - 40)) # padding (for OS/2 format)
|
||||
|
||||
if palette:
|
||||
fp.write(palette)
|
||||
|
||||
ImageFile._save(
|
||||
im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, stride, -1))]
|
||||
)
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
# Registry
|
||||
|
||||
|
||||
Image.register_open(BmpImageFile.format, BmpImageFile, _accept)
|
||||
Image.register_save(BmpImageFile.format, _save)
|
||||
|
||||
Image.register_extension(BmpImageFile.format, ".bmp")
|
||||
|
||||
Image.register_mime(BmpImageFile.format, "image/bmp")
|
||||
|
||||
Image.register_decoder("bmp_rle", BmpRleDecoder)
|
||||
|
||||
Image.register_open(DibImageFile.format, DibImageFile, _dib_accept)
|
||||
Image.register_save(DibImageFile.format, _dib_save)
|
||||
|
||||
Image.register_extension(DibImageFile.format, ".dib")
|
||||
|
||||
Image.register_mime(DibImageFile.format, "image/bmp")
|
||||
@ -0,0 +1,75 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# BUFR stub adapter
|
||||
#
|
||||
# Copyright (c) 1996-2003 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
from typing import IO
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
_handler = None
|
||||
|
||||
|
||||
def register_handler(handler: ImageFile.StubHandler | None) -> None:
|
||||
"""
|
||||
Install application-specific BUFR image handler.
|
||||
|
||||
:param handler: Handler object.
|
||||
"""
|
||||
global _handler
|
||||
_handler = handler
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Image adapter
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith((b"BUFR", b"ZCZC"))
|
||||
|
||||
|
||||
class BufrStubImageFile(ImageFile.StubImageFile):
|
||||
format = "BUFR"
|
||||
format_description = "BUFR"
|
||||
|
||||
def _open(self) -> None:
|
||||
if not _accept(self.fp.read(4)):
|
||||
msg = "Not a BUFR file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self.fp.seek(-4, os.SEEK_CUR)
|
||||
|
||||
# make something up
|
||||
self._mode = "F"
|
||||
self._size = 1, 1
|
||||
|
||||
loader = self._load()
|
||||
if loader:
|
||||
loader.open(self)
|
||||
|
||||
def _load(self) -> ImageFile.StubHandler | None:
|
||||
return _handler
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
if _handler is None or not hasattr(_handler, "save"):
|
||||
msg = "BUFR save handler not installed"
|
||||
raise OSError(msg)
|
||||
_handler.save(im, fp, filename)
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Registry
|
||||
|
||||
Image.register_open(BufrStubImageFile.format, BufrStubImageFile, _accept)
|
||||
Image.register_save(BufrStubImageFile.format, _save)
|
||||
|
||||
Image.register_extension(BufrStubImageFile.format, ".bufr")
|
||||
@ -0,0 +1,173 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# a class to read from a container file
|
||||
#
|
||||
# History:
|
||||
# 1995-06-18 fl Created
|
||||
# 1995-09-07 fl Added readline(), readlines()
|
||||
#
|
||||
# Copyright (c) 1997-2001 by Secret Labs AB
|
||||
# Copyright (c) 1995 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import io
|
||||
from collections.abc import Iterable
|
||||
from typing import IO, AnyStr, NoReturn
|
||||
|
||||
|
||||
class ContainerIO(IO[AnyStr]):
|
||||
"""
|
||||
A file object that provides read access to a part of an existing
|
||||
file (for example a TAR file).
|
||||
"""
|
||||
|
||||
def __init__(self, file: IO[AnyStr], offset: int, length: int) -> None:
|
||||
"""
|
||||
Create file object.
|
||||
|
||||
:param file: Existing file.
|
||||
:param offset: Start of region, in bytes.
|
||||
:param length: Size of region, in bytes.
|
||||
"""
|
||||
self.fh: IO[AnyStr] = file
|
||||
self.pos = 0
|
||||
self.offset = offset
|
||||
self.length = length
|
||||
self.fh.seek(offset)
|
||||
|
||||
##
|
||||
# Always false.
|
||||
|
||||
def isatty(self) -> bool:
|
||||
return False
|
||||
|
||||
def seekable(self) -> bool:
|
||||
return True
|
||||
|
||||
def seek(self, offset: int, mode: int = io.SEEK_SET) -> int:
|
||||
"""
|
||||
Move file pointer.
|
||||
|
||||
:param offset: Offset in bytes.
|
||||
:param mode: Starting position. Use 0 for beginning of region, 1
|
||||
for current offset, and 2 for end of region. You cannot move
|
||||
the pointer outside the defined region.
|
||||
:returns: Offset from start of region, in bytes.
|
||||
"""
|
||||
if mode == 1:
|
||||
self.pos = self.pos + offset
|
||||
elif mode == 2:
|
||||
self.pos = self.length + offset
|
||||
else:
|
||||
self.pos = offset
|
||||
# clamp
|
||||
self.pos = max(0, min(self.pos, self.length))
|
||||
self.fh.seek(self.offset + self.pos)
|
||||
return self.pos
|
||||
|
||||
def tell(self) -> int:
|
||||
"""
|
||||
Get current file pointer.
|
||||
|
||||
:returns: Offset from start of region, in bytes.
|
||||
"""
|
||||
return self.pos
|
||||
|
||||
def readable(self) -> bool:
|
||||
return True
|
||||
|
||||
def read(self, n: int = -1) -> AnyStr:
|
||||
"""
|
||||
Read data.
|
||||
|
||||
:param n: Number of bytes to read. If omitted, zero or negative,
|
||||
read until end of region.
|
||||
:returns: An 8-bit string.
|
||||
"""
|
||||
if n > 0:
|
||||
n = min(n, self.length - self.pos)
|
||||
else:
|
||||
n = self.length - self.pos
|
||||
if n <= 0: # EOF
|
||||
return b"" if "b" in self.fh.mode else "" # type: ignore[return-value]
|
||||
self.pos = self.pos + n
|
||||
return self.fh.read(n)
|
||||
|
||||
def readline(self, n: int = -1) -> AnyStr:
|
||||
"""
|
||||
Read a line of text.
|
||||
|
||||
:param n: Number of bytes to read. If omitted, zero or negative,
|
||||
read until end of line.
|
||||
:returns: An 8-bit string.
|
||||
"""
|
||||
s: AnyStr = b"" if "b" in self.fh.mode else "" # type: ignore[assignment]
|
||||
newline_character = b"\n" if "b" in self.fh.mode else "\n"
|
||||
while True:
|
||||
c = self.read(1)
|
||||
if not c:
|
||||
break
|
||||
s = s + c
|
||||
if c == newline_character or len(s) == n:
|
||||
break
|
||||
return s
|
||||
|
||||
def readlines(self, n: int | None = -1) -> list[AnyStr]:
|
||||
"""
|
||||
Read multiple lines of text.
|
||||
|
||||
:param n: Number of lines to read. If omitted, zero, negative or None,
|
||||
read until end of region.
|
||||
:returns: A list of 8-bit strings.
|
||||
"""
|
||||
lines = []
|
||||
while True:
|
||||
s = self.readline()
|
||||
if not s:
|
||||
break
|
||||
lines.append(s)
|
||||
if len(lines) == n:
|
||||
break
|
||||
return lines
|
||||
|
||||
def writable(self) -> bool:
|
||||
return False
|
||||
|
||||
def write(self, b: AnyStr) -> NoReturn:
|
||||
raise NotImplementedError()
|
||||
|
||||
def writelines(self, lines: Iterable[AnyStr]) -> NoReturn:
|
||||
raise NotImplementedError()
|
||||
|
||||
def truncate(self, size: int | None = None) -> int:
|
||||
raise NotImplementedError()
|
||||
|
||||
def __enter__(self) -> ContainerIO[AnyStr]:
|
||||
return self
|
||||
|
||||
def __exit__(self, *args: object) -> None:
|
||||
self.close()
|
||||
|
||||
def __iter__(self) -> ContainerIO[AnyStr]:
|
||||
return self
|
||||
|
||||
def __next__(self) -> AnyStr:
|
||||
line = self.readline()
|
||||
if not line:
|
||||
msg = "end of region"
|
||||
raise StopIteration(msg)
|
||||
return line
|
||||
|
||||
def fileno(self) -> int:
|
||||
return self.fh.fileno()
|
||||
|
||||
def flush(self) -> None:
|
||||
self.fh.flush()
|
||||
|
||||
def close(self) -> None:
|
||||
self.fh.close()
|
||||
@ -0,0 +1,75 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# Windows Cursor support for PIL
|
||||
#
|
||||
# notes:
|
||||
# uses BmpImagePlugin.py to read the bitmap data.
|
||||
#
|
||||
# history:
|
||||
# 96-05-27 fl Created
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1996.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
from . import BmpImagePlugin, Image
|
||||
from ._binary import i16le as i16
|
||||
from ._binary import i32le as i32
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(b"\0\0\2\0")
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for Windows Cursor files.
|
||||
|
||||
|
||||
class CurImageFile(BmpImagePlugin.BmpImageFile):
|
||||
format = "CUR"
|
||||
format_description = "Windows Cursor"
|
||||
|
||||
def _open(self) -> None:
|
||||
assert self.fp is not None
|
||||
offset = self.fp.tell()
|
||||
|
||||
# check magic
|
||||
s = self.fp.read(6)
|
||||
if not _accept(s):
|
||||
msg = "not a CUR file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
# pick the largest cursor in the file
|
||||
m = b""
|
||||
for i in range(i16(s, 4)):
|
||||
s = self.fp.read(16)
|
||||
if not m:
|
||||
m = s
|
||||
elif s[0] > m[0] and s[1] > m[1]:
|
||||
m = s
|
||||
if not m:
|
||||
msg = "No cursors were found"
|
||||
raise TypeError(msg)
|
||||
|
||||
# load as bitmap
|
||||
self._bitmap(i32(m, 12) + offset)
|
||||
|
||||
# patch up the bitmap height
|
||||
self._size = self.size[0], self.size[1] // 2
|
||||
self.tile = [self.tile[0]._replace(extents=(0, 0) + self.size)]
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
Image.register_open(CurImageFile.format, CurImageFile, _accept)
|
||||
|
||||
Image.register_extension(CurImageFile.format, ".cur")
|
||||
@ -0,0 +1,83 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# DCX file handling
|
||||
#
|
||||
# DCX is a container file format defined by Intel, commonly used
|
||||
# for fax applications. Each DCX file consists of a directory
|
||||
# (a list of file offsets) followed by a set of (usually 1-bit)
|
||||
# PCX files.
|
||||
#
|
||||
# History:
|
||||
# 1995-09-09 fl Created
|
||||
# 1996-03-20 fl Properly derived from PcxImageFile.
|
||||
# 1998-07-15 fl Renamed offset attribute to avoid name clash
|
||||
# 2002-07-30 fl Fixed file handling
|
||||
#
|
||||
# Copyright (c) 1997-98 by Secret Labs AB.
|
||||
# Copyright (c) 1995-96 by Fredrik Lundh.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
from . import Image
|
||||
from ._binary import i32le as i32
|
||||
from ._util import DeferredError
|
||||
from .PcxImagePlugin import PcxImageFile
|
||||
|
||||
MAGIC = 0x3ADE68B1 # QUIZ: what's this value, then?
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return len(prefix) >= 4 and i32(prefix) == MAGIC
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for the Intel DCX format.
|
||||
|
||||
|
||||
class DcxImageFile(PcxImageFile):
|
||||
format = "DCX"
|
||||
format_description = "Intel DCX"
|
||||
_close_exclusive_fp_after_loading = False
|
||||
|
||||
def _open(self) -> None:
|
||||
# Header
|
||||
s = self.fp.read(4)
|
||||
if not _accept(s):
|
||||
msg = "not a DCX file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
# Component directory
|
||||
self._offset = []
|
||||
for i in range(1024):
|
||||
offset = i32(self.fp.read(4))
|
||||
if not offset:
|
||||
break
|
||||
self._offset.append(offset)
|
||||
|
||||
self._fp = self.fp
|
||||
self.frame = -1
|
||||
self.n_frames = len(self._offset)
|
||||
self.is_animated = self.n_frames > 1
|
||||
self.seek(0)
|
||||
|
||||
def seek(self, frame: int) -> None:
|
||||
if not self._seek_check(frame):
|
||||
return
|
||||
if isinstance(self._fp, DeferredError):
|
||||
raise self._fp.ex
|
||||
self.frame = frame
|
||||
self.fp = self._fp
|
||||
self.fp.seek(self._offset[frame])
|
||||
PcxImageFile._open(self)
|
||||
|
||||
def tell(self) -> int:
|
||||
return self.frame
|
||||
|
||||
|
||||
Image.register_open(DcxImageFile.format, DcxImageFile, _accept)
|
||||
|
||||
Image.register_extension(DcxImageFile.format, ".dcx")
|
||||
@ -0,0 +1,624 @@
|
||||
"""
|
||||
A Pillow plugin for .dds files (S3TC-compressed aka DXTC)
|
||||
Jerome Leclanche <jerome@leclan.ch>
|
||||
|
||||
Documentation:
|
||||
https://web.archive.org/web/20170802060935/http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_compression_s3tc.txt
|
||||
|
||||
The contents of this file are hereby released in the public domain (CC0)
|
||||
Full text of the CC0 license:
|
||||
https://creativecommons.org/publicdomain/zero/1.0/
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import io
|
||||
import struct
|
||||
import sys
|
||||
from enum import IntEnum, IntFlag
|
||||
from typing import IO
|
||||
|
||||
from . import Image, ImageFile, ImagePalette
|
||||
from ._binary import i32le as i32
|
||||
from ._binary import o8
|
||||
from ._binary import o32le as o32
|
||||
|
||||
# Magic ("DDS ")
|
||||
DDS_MAGIC = 0x20534444
|
||||
|
||||
|
||||
# DDS flags
|
||||
class DDSD(IntFlag):
|
||||
CAPS = 0x1
|
||||
HEIGHT = 0x2
|
||||
WIDTH = 0x4
|
||||
PITCH = 0x8
|
||||
PIXELFORMAT = 0x1000
|
||||
MIPMAPCOUNT = 0x20000
|
||||
LINEARSIZE = 0x80000
|
||||
DEPTH = 0x800000
|
||||
|
||||
|
||||
# DDS caps
|
||||
class DDSCAPS(IntFlag):
|
||||
COMPLEX = 0x8
|
||||
TEXTURE = 0x1000
|
||||
MIPMAP = 0x400000
|
||||
|
||||
|
||||
class DDSCAPS2(IntFlag):
|
||||
CUBEMAP = 0x200
|
||||
CUBEMAP_POSITIVEX = 0x400
|
||||
CUBEMAP_NEGATIVEX = 0x800
|
||||
CUBEMAP_POSITIVEY = 0x1000
|
||||
CUBEMAP_NEGATIVEY = 0x2000
|
||||
CUBEMAP_POSITIVEZ = 0x4000
|
||||
CUBEMAP_NEGATIVEZ = 0x8000
|
||||
VOLUME = 0x200000
|
||||
|
||||
|
||||
# Pixel Format
|
||||
class DDPF(IntFlag):
|
||||
ALPHAPIXELS = 0x1
|
||||
ALPHA = 0x2
|
||||
FOURCC = 0x4
|
||||
PALETTEINDEXED8 = 0x20
|
||||
RGB = 0x40
|
||||
LUMINANCE = 0x20000
|
||||
|
||||
|
||||
# dxgiformat.h
|
||||
class DXGI_FORMAT(IntEnum):
|
||||
UNKNOWN = 0
|
||||
R32G32B32A32_TYPELESS = 1
|
||||
R32G32B32A32_FLOAT = 2
|
||||
R32G32B32A32_UINT = 3
|
||||
R32G32B32A32_SINT = 4
|
||||
R32G32B32_TYPELESS = 5
|
||||
R32G32B32_FLOAT = 6
|
||||
R32G32B32_UINT = 7
|
||||
R32G32B32_SINT = 8
|
||||
R16G16B16A16_TYPELESS = 9
|
||||
R16G16B16A16_FLOAT = 10
|
||||
R16G16B16A16_UNORM = 11
|
||||
R16G16B16A16_UINT = 12
|
||||
R16G16B16A16_SNORM = 13
|
||||
R16G16B16A16_SINT = 14
|
||||
R32G32_TYPELESS = 15
|
||||
R32G32_FLOAT = 16
|
||||
R32G32_UINT = 17
|
||||
R32G32_SINT = 18
|
||||
R32G8X24_TYPELESS = 19
|
||||
D32_FLOAT_S8X24_UINT = 20
|
||||
R32_FLOAT_X8X24_TYPELESS = 21
|
||||
X32_TYPELESS_G8X24_UINT = 22
|
||||
R10G10B10A2_TYPELESS = 23
|
||||
R10G10B10A2_UNORM = 24
|
||||
R10G10B10A2_UINT = 25
|
||||
R11G11B10_FLOAT = 26
|
||||
R8G8B8A8_TYPELESS = 27
|
||||
R8G8B8A8_UNORM = 28
|
||||
R8G8B8A8_UNORM_SRGB = 29
|
||||
R8G8B8A8_UINT = 30
|
||||
R8G8B8A8_SNORM = 31
|
||||
R8G8B8A8_SINT = 32
|
||||
R16G16_TYPELESS = 33
|
||||
R16G16_FLOAT = 34
|
||||
R16G16_UNORM = 35
|
||||
R16G16_UINT = 36
|
||||
R16G16_SNORM = 37
|
||||
R16G16_SINT = 38
|
||||
R32_TYPELESS = 39
|
||||
D32_FLOAT = 40
|
||||
R32_FLOAT = 41
|
||||
R32_UINT = 42
|
||||
R32_SINT = 43
|
||||
R24G8_TYPELESS = 44
|
||||
D24_UNORM_S8_UINT = 45
|
||||
R24_UNORM_X8_TYPELESS = 46
|
||||
X24_TYPELESS_G8_UINT = 47
|
||||
R8G8_TYPELESS = 48
|
||||
R8G8_UNORM = 49
|
||||
R8G8_UINT = 50
|
||||
R8G8_SNORM = 51
|
||||
R8G8_SINT = 52
|
||||
R16_TYPELESS = 53
|
||||
R16_FLOAT = 54
|
||||
D16_UNORM = 55
|
||||
R16_UNORM = 56
|
||||
R16_UINT = 57
|
||||
R16_SNORM = 58
|
||||
R16_SINT = 59
|
||||
R8_TYPELESS = 60
|
||||
R8_UNORM = 61
|
||||
R8_UINT = 62
|
||||
R8_SNORM = 63
|
||||
R8_SINT = 64
|
||||
A8_UNORM = 65
|
||||
R1_UNORM = 66
|
||||
R9G9B9E5_SHAREDEXP = 67
|
||||
R8G8_B8G8_UNORM = 68
|
||||
G8R8_G8B8_UNORM = 69
|
||||
BC1_TYPELESS = 70
|
||||
BC1_UNORM = 71
|
||||
BC1_UNORM_SRGB = 72
|
||||
BC2_TYPELESS = 73
|
||||
BC2_UNORM = 74
|
||||
BC2_UNORM_SRGB = 75
|
||||
BC3_TYPELESS = 76
|
||||
BC3_UNORM = 77
|
||||
BC3_UNORM_SRGB = 78
|
||||
BC4_TYPELESS = 79
|
||||
BC4_UNORM = 80
|
||||
BC4_SNORM = 81
|
||||
BC5_TYPELESS = 82
|
||||
BC5_UNORM = 83
|
||||
BC5_SNORM = 84
|
||||
B5G6R5_UNORM = 85
|
||||
B5G5R5A1_UNORM = 86
|
||||
B8G8R8A8_UNORM = 87
|
||||
B8G8R8X8_UNORM = 88
|
||||
R10G10B10_XR_BIAS_A2_UNORM = 89
|
||||
B8G8R8A8_TYPELESS = 90
|
||||
B8G8R8A8_UNORM_SRGB = 91
|
||||
B8G8R8X8_TYPELESS = 92
|
||||
B8G8R8X8_UNORM_SRGB = 93
|
||||
BC6H_TYPELESS = 94
|
||||
BC6H_UF16 = 95
|
||||
BC6H_SF16 = 96
|
||||
BC7_TYPELESS = 97
|
||||
BC7_UNORM = 98
|
||||
BC7_UNORM_SRGB = 99
|
||||
AYUV = 100
|
||||
Y410 = 101
|
||||
Y416 = 102
|
||||
NV12 = 103
|
||||
P010 = 104
|
||||
P016 = 105
|
||||
OPAQUE_420 = 106
|
||||
YUY2 = 107
|
||||
Y210 = 108
|
||||
Y216 = 109
|
||||
NV11 = 110
|
||||
AI44 = 111
|
||||
IA44 = 112
|
||||
P8 = 113
|
||||
A8P8 = 114
|
||||
B4G4R4A4_UNORM = 115
|
||||
P208 = 130
|
||||
V208 = 131
|
||||
V408 = 132
|
||||
SAMPLER_FEEDBACK_MIN_MIP_OPAQUE = 189
|
||||
SAMPLER_FEEDBACK_MIP_REGION_USED_OPAQUE = 190
|
||||
|
||||
|
||||
class D3DFMT(IntEnum):
|
||||
UNKNOWN = 0
|
||||
R8G8B8 = 20
|
||||
A8R8G8B8 = 21
|
||||
X8R8G8B8 = 22
|
||||
R5G6B5 = 23
|
||||
X1R5G5B5 = 24
|
||||
A1R5G5B5 = 25
|
||||
A4R4G4B4 = 26
|
||||
R3G3B2 = 27
|
||||
A8 = 28
|
||||
A8R3G3B2 = 29
|
||||
X4R4G4B4 = 30
|
||||
A2B10G10R10 = 31
|
||||
A8B8G8R8 = 32
|
||||
X8B8G8R8 = 33
|
||||
G16R16 = 34
|
||||
A2R10G10B10 = 35
|
||||
A16B16G16R16 = 36
|
||||
A8P8 = 40
|
||||
P8 = 41
|
||||
L8 = 50
|
||||
A8L8 = 51
|
||||
A4L4 = 52
|
||||
V8U8 = 60
|
||||
L6V5U5 = 61
|
||||
X8L8V8U8 = 62
|
||||
Q8W8V8U8 = 63
|
||||
V16U16 = 64
|
||||
A2W10V10U10 = 67
|
||||
D16_LOCKABLE = 70
|
||||
D32 = 71
|
||||
D15S1 = 73
|
||||
D24S8 = 75
|
||||
D24X8 = 77
|
||||
D24X4S4 = 79
|
||||
D16 = 80
|
||||
D32F_LOCKABLE = 82
|
||||
D24FS8 = 83
|
||||
D32_LOCKABLE = 84
|
||||
S8_LOCKABLE = 85
|
||||
L16 = 81
|
||||
VERTEXDATA = 100
|
||||
INDEX16 = 101
|
||||
INDEX32 = 102
|
||||
Q16W16V16U16 = 110
|
||||
R16F = 111
|
||||
G16R16F = 112
|
||||
A16B16G16R16F = 113
|
||||
R32F = 114
|
||||
G32R32F = 115
|
||||
A32B32G32R32F = 116
|
||||
CxV8U8 = 117
|
||||
A1 = 118
|
||||
A2B10G10R10_XR_BIAS = 119
|
||||
BINARYBUFFER = 199
|
||||
|
||||
UYVY = i32(b"UYVY")
|
||||
R8G8_B8G8 = i32(b"RGBG")
|
||||
YUY2 = i32(b"YUY2")
|
||||
G8R8_G8B8 = i32(b"GRGB")
|
||||
DXT1 = i32(b"DXT1")
|
||||
DXT2 = i32(b"DXT2")
|
||||
DXT3 = i32(b"DXT3")
|
||||
DXT4 = i32(b"DXT4")
|
||||
DXT5 = i32(b"DXT5")
|
||||
DX10 = i32(b"DX10")
|
||||
BC4S = i32(b"BC4S")
|
||||
BC4U = i32(b"BC4U")
|
||||
BC5S = i32(b"BC5S")
|
||||
BC5U = i32(b"BC5U")
|
||||
ATI1 = i32(b"ATI1")
|
||||
ATI2 = i32(b"ATI2")
|
||||
MULTI2_ARGB8 = i32(b"MET1")
|
||||
|
||||
|
||||
# Backward compatibility layer
|
||||
module = sys.modules[__name__]
|
||||
for item in DDSD:
|
||||
assert item.name is not None
|
||||
setattr(module, f"DDSD_{item.name}", item.value)
|
||||
for item1 in DDSCAPS:
|
||||
assert item1.name is not None
|
||||
setattr(module, f"DDSCAPS_{item1.name}", item1.value)
|
||||
for item2 in DDSCAPS2:
|
||||
assert item2.name is not None
|
||||
setattr(module, f"DDSCAPS2_{item2.name}", item2.value)
|
||||
for item3 in DDPF:
|
||||
assert item3.name is not None
|
||||
setattr(module, f"DDPF_{item3.name}", item3.value)
|
||||
|
||||
DDS_FOURCC = DDPF.FOURCC
|
||||
DDS_RGB = DDPF.RGB
|
||||
DDS_RGBA = DDPF.RGB | DDPF.ALPHAPIXELS
|
||||
DDS_LUMINANCE = DDPF.LUMINANCE
|
||||
DDS_LUMINANCEA = DDPF.LUMINANCE | DDPF.ALPHAPIXELS
|
||||
DDS_ALPHA = DDPF.ALPHA
|
||||
DDS_PAL8 = DDPF.PALETTEINDEXED8
|
||||
|
||||
DDS_HEADER_FLAGS_TEXTURE = DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PIXELFORMAT
|
||||
DDS_HEADER_FLAGS_MIPMAP = DDSD.MIPMAPCOUNT
|
||||
DDS_HEADER_FLAGS_VOLUME = DDSD.DEPTH
|
||||
DDS_HEADER_FLAGS_PITCH = DDSD.PITCH
|
||||
DDS_HEADER_FLAGS_LINEARSIZE = DDSD.LINEARSIZE
|
||||
|
||||
DDS_HEIGHT = DDSD.HEIGHT
|
||||
DDS_WIDTH = DDSD.WIDTH
|
||||
|
||||
DDS_SURFACE_FLAGS_TEXTURE = DDSCAPS.TEXTURE
|
||||
DDS_SURFACE_FLAGS_MIPMAP = DDSCAPS.COMPLEX | DDSCAPS.MIPMAP
|
||||
DDS_SURFACE_FLAGS_CUBEMAP = DDSCAPS.COMPLEX
|
||||
|
||||
DDS_CUBEMAP_POSITIVEX = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEX
|
||||
DDS_CUBEMAP_NEGATIVEX = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEX
|
||||
DDS_CUBEMAP_POSITIVEY = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEY
|
||||
DDS_CUBEMAP_NEGATIVEY = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEY
|
||||
DDS_CUBEMAP_POSITIVEZ = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_POSITIVEZ
|
||||
DDS_CUBEMAP_NEGATIVEZ = DDSCAPS2.CUBEMAP | DDSCAPS2.CUBEMAP_NEGATIVEZ
|
||||
|
||||
DXT1_FOURCC = D3DFMT.DXT1
|
||||
DXT3_FOURCC = D3DFMT.DXT3
|
||||
DXT5_FOURCC = D3DFMT.DXT5
|
||||
|
||||
DXGI_FORMAT_R8G8B8A8_TYPELESS = DXGI_FORMAT.R8G8B8A8_TYPELESS
|
||||
DXGI_FORMAT_R8G8B8A8_UNORM = DXGI_FORMAT.R8G8B8A8_UNORM
|
||||
DXGI_FORMAT_R8G8B8A8_UNORM_SRGB = DXGI_FORMAT.R8G8B8A8_UNORM_SRGB
|
||||
DXGI_FORMAT_BC5_TYPELESS = DXGI_FORMAT.BC5_TYPELESS
|
||||
DXGI_FORMAT_BC5_UNORM = DXGI_FORMAT.BC5_UNORM
|
||||
DXGI_FORMAT_BC5_SNORM = DXGI_FORMAT.BC5_SNORM
|
||||
DXGI_FORMAT_BC6H_UF16 = DXGI_FORMAT.BC6H_UF16
|
||||
DXGI_FORMAT_BC6H_SF16 = DXGI_FORMAT.BC6H_SF16
|
||||
DXGI_FORMAT_BC7_TYPELESS = DXGI_FORMAT.BC7_TYPELESS
|
||||
DXGI_FORMAT_BC7_UNORM = DXGI_FORMAT.BC7_UNORM
|
||||
DXGI_FORMAT_BC7_UNORM_SRGB = DXGI_FORMAT.BC7_UNORM_SRGB
|
||||
|
||||
|
||||
class DdsImageFile(ImageFile.ImageFile):
|
||||
format = "DDS"
|
||||
format_description = "DirectDraw Surface"
|
||||
|
||||
def _open(self) -> None:
|
||||
if not _accept(self.fp.read(4)):
|
||||
msg = "not a DDS file"
|
||||
raise SyntaxError(msg)
|
||||
(header_size,) = struct.unpack("<I", self.fp.read(4))
|
||||
if header_size != 124:
|
||||
msg = f"Unsupported header size {repr(header_size)}"
|
||||
raise OSError(msg)
|
||||
header_bytes = self.fp.read(header_size - 4)
|
||||
if len(header_bytes) != 120:
|
||||
msg = f"Incomplete header: {len(header_bytes)} bytes"
|
||||
raise OSError(msg)
|
||||
header = io.BytesIO(header_bytes)
|
||||
|
||||
flags, height, width = struct.unpack("<3I", header.read(12))
|
||||
self._size = (width, height)
|
||||
extents = (0, 0) + self.size
|
||||
|
||||
pitch, depth, mipmaps = struct.unpack("<3I", header.read(12))
|
||||
struct.unpack("<11I", header.read(44)) # reserved
|
||||
|
||||
# pixel format
|
||||
pfsize, pfflags, fourcc, bitcount = struct.unpack("<4I", header.read(16))
|
||||
n = 0
|
||||
rawmode = None
|
||||
if pfflags & DDPF.RGB:
|
||||
# Texture contains uncompressed RGB data
|
||||
if pfflags & DDPF.ALPHAPIXELS:
|
||||
self._mode = "RGBA"
|
||||
mask_count = 4
|
||||
else:
|
||||
self._mode = "RGB"
|
||||
mask_count = 3
|
||||
|
||||
masks = struct.unpack(f"<{mask_count}I", header.read(mask_count * 4))
|
||||
self.tile = [ImageFile._Tile("dds_rgb", extents, 0, (bitcount, masks))]
|
||||
return
|
||||
elif pfflags & DDPF.LUMINANCE:
|
||||
if bitcount == 8:
|
||||
self._mode = "L"
|
||||
elif bitcount == 16 and pfflags & DDPF.ALPHAPIXELS:
|
||||
self._mode = "LA"
|
||||
else:
|
||||
msg = f"Unsupported bitcount {bitcount} for {pfflags}"
|
||||
raise OSError(msg)
|
||||
elif pfflags & DDPF.PALETTEINDEXED8:
|
||||
self._mode = "P"
|
||||
self.palette = ImagePalette.raw("RGBA", self.fp.read(1024))
|
||||
self.palette.mode = "RGBA"
|
||||
elif pfflags & DDPF.FOURCC:
|
||||
offset = header_size + 4
|
||||
if fourcc == D3DFMT.DXT1:
|
||||
self._mode = "RGBA"
|
||||
self.pixel_format = "DXT1"
|
||||
n = 1
|
||||
elif fourcc == D3DFMT.DXT3:
|
||||
self._mode = "RGBA"
|
||||
self.pixel_format = "DXT3"
|
||||
n = 2
|
||||
elif fourcc == D3DFMT.DXT5:
|
||||
self._mode = "RGBA"
|
||||
self.pixel_format = "DXT5"
|
||||
n = 3
|
||||
elif fourcc in (D3DFMT.BC4U, D3DFMT.ATI1):
|
||||
self._mode = "L"
|
||||
self.pixel_format = "BC4"
|
||||
n = 4
|
||||
elif fourcc == D3DFMT.BC5S:
|
||||
self._mode = "RGB"
|
||||
self.pixel_format = "BC5S"
|
||||
n = 5
|
||||
elif fourcc in (D3DFMT.BC5U, D3DFMT.ATI2):
|
||||
self._mode = "RGB"
|
||||
self.pixel_format = "BC5"
|
||||
n = 5
|
||||
elif fourcc == D3DFMT.DX10:
|
||||
offset += 20
|
||||
# ignoring flags which pertain to volume textures and cubemaps
|
||||
(dxgi_format,) = struct.unpack("<I", self.fp.read(4))
|
||||
self.fp.read(16)
|
||||
if dxgi_format in (
|
||||
DXGI_FORMAT.BC1_UNORM,
|
||||
DXGI_FORMAT.BC1_TYPELESS,
|
||||
):
|
||||
self._mode = "RGBA"
|
||||
self.pixel_format = "BC1"
|
||||
n = 1
|
||||
elif dxgi_format in (DXGI_FORMAT.BC2_TYPELESS, DXGI_FORMAT.BC2_UNORM):
|
||||
self._mode = "RGBA"
|
||||
self.pixel_format = "BC2"
|
||||
n = 2
|
||||
elif dxgi_format in (DXGI_FORMAT.BC3_TYPELESS, DXGI_FORMAT.BC3_UNORM):
|
||||
self._mode = "RGBA"
|
||||
self.pixel_format = "BC3"
|
||||
n = 3
|
||||
elif dxgi_format in (DXGI_FORMAT.BC4_TYPELESS, DXGI_FORMAT.BC4_UNORM):
|
||||
self._mode = "L"
|
||||
self.pixel_format = "BC4"
|
||||
n = 4
|
||||
elif dxgi_format in (DXGI_FORMAT.BC5_TYPELESS, DXGI_FORMAT.BC5_UNORM):
|
||||
self._mode = "RGB"
|
||||
self.pixel_format = "BC5"
|
||||
n = 5
|
||||
elif dxgi_format == DXGI_FORMAT.BC5_SNORM:
|
||||
self._mode = "RGB"
|
||||
self.pixel_format = "BC5S"
|
||||
n = 5
|
||||
elif dxgi_format == DXGI_FORMAT.BC6H_UF16:
|
||||
self._mode = "RGB"
|
||||
self.pixel_format = "BC6H"
|
||||
n = 6
|
||||
elif dxgi_format == DXGI_FORMAT.BC6H_SF16:
|
||||
self._mode = "RGB"
|
||||
self.pixel_format = "BC6HS"
|
||||
n = 6
|
||||
elif dxgi_format in (
|
||||
DXGI_FORMAT.BC7_TYPELESS,
|
||||
DXGI_FORMAT.BC7_UNORM,
|
||||
DXGI_FORMAT.BC7_UNORM_SRGB,
|
||||
):
|
||||
self._mode = "RGBA"
|
||||
self.pixel_format = "BC7"
|
||||
n = 7
|
||||
if dxgi_format == DXGI_FORMAT.BC7_UNORM_SRGB:
|
||||
self.info["gamma"] = 1 / 2.2
|
||||
elif dxgi_format in (
|
||||
DXGI_FORMAT.R8G8B8A8_TYPELESS,
|
||||
DXGI_FORMAT.R8G8B8A8_UNORM,
|
||||
DXGI_FORMAT.R8G8B8A8_UNORM_SRGB,
|
||||
):
|
||||
self._mode = "RGBA"
|
||||
if dxgi_format == DXGI_FORMAT.R8G8B8A8_UNORM_SRGB:
|
||||
self.info["gamma"] = 1 / 2.2
|
||||
else:
|
||||
msg = f"Unimplemented DXGI format {dxgi_format}"
|
||||
raise NotImplementedError(msg)
|
||||
else:
|
||||
msg = f"Unimplemented pixel format {repr(fourcc)}"
|
||||
raise NotImplementedError(msg)
|
||||
else:
|
||||
msg = f"Unknown pixel format flags {pfflags}"
|
||||
raise NotImplementedError(msg)
|
||||
|
||||
if n:
|
||||
self.tile = [
|
||||
ImageFile._Tile("bcn", extents, offset, (n, self.pixel_format))
|
||||
]
|
||||
else:
|
||||
self.tile = [ImageFile._Tile("raw", extents, 0, rawmode or self.mode)]
|
||||
|
||||
def load_seek(self, pos: int) -> None:
|
||||
pass
|
||||
|
||||
|
||||
class DdsRgbDecoder(ImageFile.PyDecoder):
|
||||
_pulls_fd = True
|
||||
|
||||
def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
|
||||
assert self.fd is not None
|
||||
bitcount, masks = self.args
|
||||
|
||||
# Some masks will be padded with zeros, e.g. R 0b11 G 0b1100
|
||||
# Calculate how many zeros each mask is padded with
|
||||
mask_offsets = []
|
||||
# And the maximum value of each channel without the padding
|
||||
mask_totals = []
|
||||
for mask in masks:
|
||||
offset = 0
|
||||
if mask != 0:
|
||||
while mask >> (offset + 1) << (offset + 1) == mask:
|
||||
offset += 1
|
||||
mask_offsets.append(offset)
|
||||
mask_totals.append(mask >> offset)
|
||||
|
||||
data = bytearray()
|
||||
bytecount = bitcount // 8
|
||||
dest_length = self.state.xsize * self.state.ysize * len(masks)
|
||||
while len(data) < dest_length:
|
||||
value = int.from_bytes(self.fd.read(bytecount), "little")
|
||||
for i, mask in enumerate(masks):
|
||||
masked_value = value & mask
|
||||
# Remove the zero padding, and scale it to 8 bits
|
||||
data += o8(
|
||||
int(((masked_value >> mask_offsets[i]) / mask_totals[i]) * 255)
|
||||
)
|
||||
self.set_as_raw(data)
|
||||
return -1, 0
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
if im.mode not in ("RGB", "RGBA", "L", "LA"):
|
||||
msg = f"cannot write mode {im.mode} as DDS"
|
||||
raise OSError(msg)
|
||||
|
||||
flags = DDSD.CAPS | DDSD.HEIGHT | DDSD.WIDTH | DDSD.PIXELFORMAT
|
||||
bitcount = len(im.getbands()) * 8
|
||||
pixel_format = im.encoderinfo.get("pixel_format")
|
||||
args: tuple[int] | str
|
||||
if pixel_format:
|
||||
codec_name = "bcn"
|
||||
flags |= DDSD.LINEARSIZE
|
||||
pitch = (im.width + 3) * 4
|
||||
rgba_mask = [0, 0, 0, 0]
|
||||
pixel_flags = DDPF.FOURCC
|
||||
if pixel_format == "DXT1":
|
||||
fourcc = D3DFMT.DXT1
|
||||
args = (1,)
|
||||
elif pixel_format == "DXT3":
|
||||
fourcc = D3DFMT.DXT3
|
||||
args = (2,)
|
||||
elif pixel_format == "DXT5":
|
||||
fourcc = D3DFMT.DXT5
|
||||
args = (3,)
|
||||
else:
|
||||
fourcc = D3DFMT.DX10
|
||||
if pixel_format == "BC2":
|
||||
args = (2,)
|
||||
dxgi_format = DXGI_FORMAT.BC2_TYPELESS
|
||||
elif pixel_format == "BC3":
|
||||
args = (3,)
|
||||
dxgi_format = DXGI_FORMAT.BC3_TYPELESS
|
||||
elif pixel_format == "BC5":
|
||||
args = (5,)
|
||||
dxgi_format = DXGI_FORMAT.BC5_TYPELESS
|
||||
if im.mode != "RGB":
|
||||
msg = "only RGB mode can be written as BC5"
|
||||
raise OSError(msg)
|
||||
else:
|
||||
msg = f"cannot write pixel format {pixel_format}"
|
||||
raise OSError(msg)
|
||||
else:
|
||||
codec_name = "raw"
|
||||
flags |= DDSD.PITCH
|
||||
pitch = (im.width * bitcount + 7) // 8
|
||||
|
||||
alpha = im.mode[-1] == "A"
|
||||
if im.mode[0] == "L":
|
||||
pixel_flags = DDPF.LUMINANCE
|
||||
args = im.mode
|
||||
if alpha:
|
||||
rgba_mask = [0x000000FF, 0x000000FF, 0x000000FF]
|
||||
else:
|
||||
rgba_mask = [0xFF000000, 0xFF000000, 0xFF000000]
|
||||
else:
|
||||
pixel_flags = DDPF.RGB
|
||||
args = im.mode[::-1]
|
||||
rgba_mask = [0x00FF0000, 0x0000FF00, 0x000000FF]
|
||||
|
||||
if alpha:
|
||||
r, g, b, a = im.split()
|
||||
im = Image.merge("RGBA", (a, r, g, b))
|
||||
if alpha:
|
||||
pixel_flags |= DDPF.ALPHAPIXELS
|
||||
rgba_mask.append(0xFF000000 if alpha else 0)
|
||||
|
||||
fourcc = D3DFMT.UNKNOWN
|
||||
fp.write(
|
||||
o32(DDS_MAGIC)
|
||||
+ struct.pack(
|
||||
"<7I",
|
||||
124, # header size
|
||||
flags, # flags
|
||||
im.height,
|
||||
im.width,
|
||||
pitch,
|
||||
0, # depth
|
||||
0, # mipmaps
|
||||
)
|
||||
+ struct.pack("11I", *((0,) * 11)) # reserved
|
||||
# pfsize, pfflags, fourcc, bitcount
|
||||
+ struct.pack("<4I", 32, pixel_flags, fourcc, bitcount)
|
||||
+ struct.pack("<4I", *rgba_mask) # dwRGBABitMask
|
||||
+ struct.pack("<5I", DDSCAPS.TEXTURE, 0, 0, 0, 0)
|
||||
)
|
||||
if fourcc == D3DFMT.DX10:
|
||||
fp.write(
|
||||
# dxgi_format, 2D resource, misc, array size, straight alpha
|
||||
struct.pack("<5I", dxgi_format, 3, 0, 0, 1)
|
||||
)
|
||||
ImageFile._save(im, fp, [ImageFile._Tile(codec_name, (0, 0) + im.size, 0, args)])
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(b"DDS ")
|
||||
|
||||
|
||||
Image.register_open(DdsImageFile.format, DdsImageFile, _accept)
|
||||
Image.register_decoder("dds_rgb", DdsRgbDecoder)
|
||||
Image.register_save(DdsImageFile.format, _save)
|
||||
Image.register_extension(DdsImageFile.format, ".dds")
|
||||
@ -0,0 +1,479 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# EPS file handling
|
||||
#
|
||||
# History:
|
||||
# 1995-09-01 fl Created (0.1)
|
||||
# 1996-05-18 fl Don't choke on "atend" fields, Ghostscript interface (0.2)
|
||||
# 1996-08-22 fl Don't choke on floating point BoundingBox values
|
||||
# 1996-08-23 fl Handle files from Macintosh (0.3)
|
||||
# 2001-02-17 fl Use 're' instead of 'regex' (Python 2.1) (0.4)
|
||||
# 2003-09-07 fl Check gs.close status (from Federico Di Gregorio) (0.5)
|
||||
# 2014-05-07 e Handling of EPS with binary preview and fixed resolution
|
||||
# resizing
|
||||
#
|
||||
# Copyright (c) 1997-2003 by Secret Labs AB.
|
||||
# Copyright (c) 1995-2003 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import io
|
||||
import os
|
||||
import re
|
||||
import subprocess
|
||||
import sys
|
||||
import tempfile
|
||||
from typing import IO
|
||||
|
||||
from . import Image, ImageFile
|
||||
from ._binary import i32le as i32
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
split = re.compile(r"^%%([^:]*):[ \t]*(.*)[ \t]*$")
|
||||
field = re.compile(r"^%[%!\w]([^:]*)[ \t]*$")
|
||||
|
||||
gs_binary: str | bool | None = None
|
||||
gs_windows_binary = None
|
||||
|
||||
|
||||
def has_ghostscript() -> bool:
|
||||
global gs_binary, gs_windows_binary
|
||||
if gs_binary is None:
|
||||
if sys.platform.startswith("win"):
|
||||
if gs_windows_binary is None:
|
||||
import shutil
|
||||
|
||||
for binary in ("gswin32c", "gswin64c", "gs"):
|
||||
if shutil.which(binary) is not None:
|
||||
gs_windows_binary = binary
|
||||
break
|
||||
else:
|
||||
gs_windows_binary = False
|
||||
gs_binary = gs_windows_binary
|
||||
else:
|
||||
try:
|
||||
subprocess.check_call(["gs", "--version"], stdout=subprocess.DEVNULL)
|
||||
gs_binary = "gs"
|
||||
except OSError:
|
||||
gs_binary = False
|
||||
return gs_binary is not False
|
||||
|
||||
|
||||
def Ghostscript(
|
||||
tile: list[ImageFile._Tile],
|
||||
size: tuple[int, int],
|
||||
fp: IO[bytes],
|
||||
scale: int = 1,
|
||||
transparency: bool = False,
|
||||
) -> Image.core.ImagingCore:
|
||||
"""Render an image using Ghostscript"""
|
||||
global gs_binary
|
||||
if not has_ghostscript():
|
||||
msg = "Unable to locate Ghostscript on paths"
|
||||
raise OSError(msg)
|
||||
assert isinstance(gs_binary, str)
|
||||
|
||||
# Unpack decoder tile
|
||||
args = tile[0].args
|
||||
assert isinstance(args, tuple)
|
||||
length, bbox = args
|
||||
|
||||
# Hack to support hi-res rendering
|
||||
scale = int(scale) or 1
|
||||
width = size[0] * scale
|
||||
height = size[1] * scale
|
||||
# resolution is dependent on bbox and size
|
||||
res_x = 72.0 * width / (bbox[2] - bbox[0])
|
||||
res_y = 72.0 * height / (bbox[3] - bbox[1])
|
||||
|
||||
out_fd, outfile = tempfile.mkstemp()
|
||||
os.close(out_fd)
|
||||
|
||||
infile_temp = None
|
||||
if hasattr(fp, "name") and os.path.exists(fp.name):
|
||||
infile = fp.name
|
||||
else:
|
||||
in_fd, infile_temp = tempfile.mkstemp()
|
||||
os.close(in_fd)
|
||||
infile = infile_temp
|
||||
|
||||
# Ignore length and offset!
|
||||
# Ghostscript can read it
|
||||
# Copy whole file to read in Ghostscript
|
||||
with open(infile_temp, "wb") as f:
|
||||
# fetch length of fp
|
||||
fp.seek(0, io.SEEK_END)
|
||||
fsize = fp.tell()
|
||||
# ensure start position
|
||||
# go back
|
||||
fp.seek(0)
|
||||
lengthfile = fsize
|
||||
while lengthfile > 0:
|
||||
s = fp.read(min(lengthfile, 100 * 1024))
|
||||
if not s:
|
||||
break
|
||||
lengthfile -= len(s)
|
||||
f.write(s)
|
||||
|
||||
if transparency:
|
||||
# "RGBA"
|
||||
device = "pngalpha"
|
||||
else:
|
||||
# "pnmraw" automatically chooses between
|
||||
# PBM ("1"), PGM ("L"), and PPM ("RGB").
|
||||
device = "pnmraw"
|
||||
|
||||
# Build Ghostscript command
|
||||
command = [
|
||||
gs_binary,
|
||||
"-q", # quiet mode
|
||||
f"-g{width:d}x{height:d}", # set output geometry (pixels)
|
||||
f"-r{res_x:f}x{res_y:f}", # set input DPI (dots per inch)
|
||||
"-dBATCH", # exit after processing
|
||||
"-dNOPAUSE", # don't pause between pages
|
||||
"-dSAFER", # safe mode
|
||||
f"-sDEVICE={device}",
|
||||
f"-sOutputFile={outfile}", # output file
|
||||
# adjust for image origin
|
||||
"-c",
|
||||
f"{-bbox[0]} {-bbox[1]} translate",
|
||||
"-f",
|
||||
infile, # input file
|
||||
# showpage (see https://bugs.ghostscript.com/show_bug.cgi?id=698272)
|
||||
"-c",
|
||||
"showpage",
|
||||
]
|
||||
|
||||
# push data through Ghostscript
|
||||
try:
|
||||
startupinfo = None
|
||||
if sys.platform.startswith("win"):
|
||||
startupinfo = subprocess.STARTUPINFO()
|
||||
startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
|
||||
subprocess.check_call(command, startupinfo=startupinfo)
|
||||
with Image.open(outfile) as out_im:
|
||||
out_im.load()
|
||||
return out_im.im.copy()
|
||||
finally:
|
||||
try:
|
||||
os.unlink(outfile)
|
||||
if infile_temp:
|
||||
os.unlink(infile_temp)
|
||||
except OSError:
|
||||
pass
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(b"%!PS") or (
|
||||
len(prefix) >= 4 and i32(prefix) == 0xC6D3D0C5
|
||||
)
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for Encapsulated PostScript. This plugin supports only
|
||||
# a few variants of this format.
|
||||
|
||||
|
||||
class EpsImageFile(ImageFile.ImageFile):
|
||||
"""EPS File Parser for the Python Imaging Library"""
|
||||
|
||||
format = "EPS"
|
||||
format_description = "Encapsulated Postscript"
|
||||
|
||||
mode_map = {1: "L", 2: "LAB", 3: "RGB", 4: "CMYK"}
|
||||
|
||||
def _open(self) -> None:
|
||||
(length, offset) = self._find_offset(self.fp)
|
||||
|
||||
# go to offset - start of "%!PS"
|
||||
self.fp.seek(offset)
|
||||
|
||||
self._mode = "RGB"
|
||||
|
||||
# When reading header comments, the first comment is used.
|
||||
# When reading trailer comments, the last comment is used.
|
||||
bounding_box: list[int] | None = None
|
||||
imagedata_size: tuple[int, int] | None = None
|
||||
|
||||
byte_arr = bytearray(255)
|
||||
bytes_mv = memoryview(byte_arr)
|
||||
bytes_read = 0
|
||||
reading_header_comments = True
|
||||
reading_trailer_comments = False
|
||||
trailer_reached = False
|
||||
|
||||
def check_required_header_comments() -> None:
|
||||
"""
|
||||
The EPS specification requires that some headers exist.
|
||||
This should be checked when the header comments formally end,
|
||||
when image data starts, or when the file ends, whichever comes first.
|
||||
"""
|
||||
if "PS-Adobe" not in self.info:
|
||||
msg = 'EPS header missing "%!PS-Adobe" comment'
|
||||
raise SyntaxError(msg)
|
||||
if "BoundingBox" not in self.info:
|
||||
msg = 'EPS header missing "%%BoundingBox" comment'
|
||||
raise SyntaxError(msg)
|
||||
|
||||
def read_comment(s: str) -> bool:
|
||||
nonlocal bounding_box, reading_trailer_comments
|
||||
try:
|
||||
m = split.match(s)
|
||||
except re.error as e:
|
||||
msg = "not an EPS file"
|
||||
raise SyntaxError(msg) from e
|
||||
|
||||
if not m:
|
||||
return False
|
||||
|
||||
k, v = m.group(1, 2)
|
||||
self.info[k] = v
|
||||
if k == "BoundingBox":
|
||||
if v == "(atend)":
|
||||
reading_trailer_comments = True
|
||||
elif not bounding_box or (trailer_reached and reading_trailer_comments):
|
||||
try:
|
||||
# Note: The DSC spec says that BoundingBox
|
||||
# fields should be integers, but some drivers
|
||||
# put floating point values there anyway.
|
||||
bounding_box = [int(float(i)) for i in v.split()]
|
||||
except Exception:
|
||||
pass
|
||||
return True
|
||||
|
||||
while True:
|
||||
byte = self.fp.read(1)
|
||||
if byte == b"":
|
||||
# if we didn't read a byte we must be at the end of the file
|
||||
if bytes_read == 0:
|
||||
if reading_header_comments:
|
||||
check_required_header_comments()
|
||||
break
|
||||
elif byte in b"\r\n":
|
||||
# if we read a line ending character, ignore it and parse what
|
||||
# we have already read. if we haven't read any other characters,
|
||||
# continue reading
|
||||
if bytes_read == 0:
|
||||
continue
|
||||
else:
|
||||
# ASCII/hexadecimal lines in an EPS file must not exceed
|
||||
# 255 characters, not including line ending characters
|
||||
if bytes_read >= 255:
|
||||
# only enforce this for lines starting with a "%",
|
||||
# otherwise assume it's binary data
|
||||
if byte_arr[0] == ord("%"):
|
||||
msg = "not an EPS file"
|
||||
raise SyntaxError(msg)
|
||||
else:
|
||||
if reading_header_comments:
|
||||
check_required_header_comments()
|
||||
reading_header_comments = False
|
||||
# reset bytes_read so we can keep reading
|
||||
# data until the end of the line
|
||||
bytes_read = 0
|
||||
byte_arr[bytes_read] = byte[0]
|
||||
bytes_read += 1
|
||||
continue
|
||||
|
||||
if reading_header_comments:
|
||||
# Load EPS header
|
||||
|
||||
# if this line doesn't start with a "%",
|
||||
# or does start with "%%EndComments",
|
||||
# then we've reached the end of the header/comments
|
||||
if byte_arr[0] != ord("%") or bytes_mv[:13] == b"%%EndComments":
|
||||
check_required_header_comments()
|
||||
reading_header_comments = False
|
||||
continue
|
||||
|
||||
s = str(bytes_mv[:bytes_read], "latin-1")
|
||||
if not read_comment(s):
|
||||
m = field.match(s)
|
||||
if m:
|
||||
k = m.group(1)
|
||||
if k.startswith("PS-Adobe"):
|
||||
self.info["PS-Adobe"] = k[9:]
|
||||
else:
|
||||
self.info[k] = ""
|
||||
elif s[0] == "%":
|
||||
# handle non-DSC PostScript comments that some
|
||||
# tools mistakenly put in the Comments section
|
||||
pass
|
||||
else:
|
||||
msg = "bad EPS header"
|
||||
raise OSError(msg)
|
||||
elif bytes_mv[:11] == b"%ImageData:":
|
||||
# Check for an "ImageData" descriptor
|
||||
# https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577413_pgfId-1035096
|
||||
|
||||
# If we've already read an "ImageData" descriptor,
|
||||
# don't read another one.
|
||||
if imagedata_size:
|
||||
bytes_read = 0
|
||||
continue
|
||||
|
||||
# Values:
|
||||
# columns
|
||||
# rows
|
||||
# bit depth (1 or 8)
|
||||
# mode (1: L, 2: LAB, 3: RGB, 4: CMYK)
|
||||
# number of padding channels
|
||||
# block size (number of bytes per row per channel)
|
||||
# binary/ascii (1: binary, 2: ascii)
|
||||
# data start identifier (the image data follows after a single line
|
||||
# consisting only of this quoted value)
|
||||
image_data_values = byte_arr[11:bytes_read].split(None, 7)
|
||||
columns, rows, bit_depth, mode_id = (
|
||||
int(value) for value in image_data_values[:4]
|
||||
)
|
||||
|
||||
if bit_depth == 1:
|
||||
self._mode = "1"
|
||||
elif bit_depth == 8:
|
||||
try:
|
||||
self._mode = self.mode_map[mode_id]
|
||||
except ValueError:
|
||||
break
|
||||
else:
|
||||
break
|
||||
|
||||
# Parse the columns and rows after checking the bit depth and mode
|
||||
# in case the bit depth and/or mode are invalid.
|
||||
imagedata_size = columns, rows
|
||||
elif bytes_mv[:5] == b"%%EOF":
|
||||
break
|
||||
elif trailer_reached and reading_trailer_comments:
|
||||
# Load EPS trailer
|
||||
s = str(bytes_mv[:bytes_read], "latin-1")
|
||||
read_comment(s)
|
||||
elif bytes_mv[:9] == b"%%Trailer":
|
||||
trailer_reached = True
|
||||
elif bytes_mv[:14] == b"%%BeginBinary:":
|
||||
bytecount = int(byte_arr[14:bytes_read])
|
||||
self.fp.seek(bytecount, os.SEEK_CUR)
|
||||
bytes_read = 0
|
||||
|
||||
# A "BoundingBox" is always required,
|
||||
# even if an "ImageData" descriptor size exists.
|
||||
if not bounding_box:
|
||||
msg = "cannot determine EPS bounding box"
|
||||
raise OSError(msg)
|
||||
|
||||
# An "ImageData" size takes precedence over the "BoundingBox".
|
||||
self._size = imagedata_size or (
|
||||
bounding_box[2] - bounding_box[0],
|
||||
bounding_box[3] - bounding_box[1],
|
||||
)
|
||||
|
||||
self.tile = [
|
||||
ImageFile._Tile("eps", (0, 0) + self.size, offset, (length, bounding_box))
|
||||
]
|
||||
|
||||
def _find_offset(self, fp: IO[bytes]) -> tuple[int, int]:
|
||||
s = fp.read(4)
|
||||
|
||||
if s == b"%!PS":
|
||||
# for HEAD without binary preview
|
||||
fp.seek(0, io.SEEK_END)
|
||||
length = fp.tell()
|
||||
offset = 0
|
||||
elif i32(s) == 0xC6D3D0C5:
|
||||
# FIX for: Some EPS file not handled correctly / issue #302
|
||||
# EPS can contain binary data
|
||||
# or start directly with latin coding
|
||||
# more info see:
|
||||
# https://web.archive.org/web/20160528181353/http://partners.adobe.com/public/developer/en/ps/5002.EPSF_Spec.pdf
|
||||
s = fp.read(8)
|
||||
offset = i32(s)
|
||||
length = i32(s, 4)
|
||||
else:
|
||||
msg = "not an EPS file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
return length, offset
|
||||
|
||||
def load(
|
||||
self, scale: int = 1, transparency: bool = False
|
||||
) -> Image.core.PixelAccess | None:
|
||||
# Load EPS via Ghostscript
|
||||
if self.tile:
|
||||
self.im = Ghostscript(self.tile, self.size, self.fp, scale, transparency)
|
||||
self._mode = self.im.mode
|
||||
self._size = self.im.size
|
||||
self.tile = []
|
||||
return Image.Image.load(self)
|
||||
|
||||
def load_seek(self, pos: int) -> None:
|
||||
# we can't incrementally load, so force ImageFile.parser to
|
||||
# use our custom load method by defining this method.
|
||||
pass
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes, eps: int = 1) -> None:
|
||||
"""EPS Writer for the Python Imaging Library."""
|
||||
|
||||
# make sure image data is available
|
||||
im.load()
|
||||
|
||||
# determine PostScript image mode
|
||||
if im.mode == "L":
|
||||
operator = (8, 1, b"image")
|
||||
elif im.mode == "RGB":
|
||||
operator = (8, 3, b"false 3 colorimage")
|
||||
elif im.mode == "CMYK":
|
||||
operator = (8, 4, b"false 4 colorimage")
|
||||
else:
|
||||
msg = "image mode is not supported"
|
||||
raise ValueError(msg)
|
||||
|
||||
if eps:
|
||||
# write EPS header
|
||||
fp.write(b"%!PS-Adobe-3.0 EPSF-3.0\n")
|
||||
fp.write(b"%%Creator: PIL 0.1 EpsEncode\n")
|
||||
# fp.write("%%CreationDate: %s"...)
|
||||
fp.write(b"%%%%BoundingBox: 0 0 %d %d\n" % im.size)
|
||||
fp.write(b"%%Pages: 1\n")
|
||||
fp.write(b"%%EndComments\n")
|
||||
fp.write(b"%%Page: 1 1\n")
|
||||
fp.write(b"%%ImageData: %d %d " % im.size)
|
||||
fp.write(b'%d %d 0 1 1 "%s"\n' % operator)
|
||||
|
||||
# image header
|
||||
fp.write(b"gsave\n")
|
||||
fp.write(b"10 dict begin\n")
|
||||
fp.write(b"/buf %d string def\n" % (im.size[0] * operator[1]))
|
||||
fp.write(b"%d %d scale\n" % im.size)
|
||||
fp.write(b"%d %d 8\n" % im.size) # <= bits
|
||||
fp.write(b"[%d 0 0 -%d 0 %d]\n" % (im.size[0], im.size[1], im.size[1]))
|
||||
fp.write(b"{ currentfile buf readhexstring pop } bind\n")
|
||||
fp.write(operator[2] + b"\n")
|
||||
if hasattr(fp, "flush"):
|
||||
fp.flush()
|
||||
|
||||
ImageFile._save(im, fp, [ImageFile._Tile("eps", (0, 0) + im.size)])
|
||||
|
||||
fp.write(b"\n%%%%EndBinary\n")
|
||||
fp.write(b"grestore end\n")
|
||||
if hasattr(fp, "flush"):
|
||||
fp.flush()
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
Image.register_open(EpsImageFile.format, EpsImageFile, _accept)
|
||||
|
||||
Image.register_save(EpsImageFile.format, _save)
|
||||
|
||||
Image.register_extensions(EpsImageFile.format, [".ps", ".eps"])
|
||||
|
||||
Image.register_mime(EpsImageFile.format, "application/postscript")
|
||||
@ -0,0 +1,382 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# EXIF tags
|
||||
#
|
||||
# Copyright (c) 2003 by Secret Labs AB
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
|
||||
"""
|
||||
This module provides constants and clear-text names for various
|
||||
well-known EXIF tags.
|
||||
"""
|
||||
from __future__ import annotations
|
||||
|
||||
from enum import IntEnum
|
||||
|
||||
|
||||
class Base(IntEnum):
|
||||
# possibly incomplete
|
||||
InteropIndex = 0x0001
|
||||
ProcessingSoftware = 0x000B
|
||||
NewSubfileType = 0x00FE
|
||||
SubfileType = 0x00FF
|
||||
ImageWidth = 0x0100
|
||||
ImageLength = 0x0101
|
||||
BitsPerSample = 0x0102
|
||||
Compression = 0x0103
|
||||
PhotometricInterpretation = 0x0106
|
||||
Thresholding = 0x0107
|
||||
CellWidth = 0x0108
|
||||
CellLength = 0x0109
|
||||
FillOrder = 0x010A
|
||||
DocumentName = 0x010D
|
||||
ImageDescription = 0x010E
|
||||
Make = 0x010F
|
||||
Model = 0x0110
|
||||
StripOffsets = 0x0111
|
||||
Orientation = 0x0112
|
||||
SamplesPerPixel = 0x0115
|
||||
RowsPerStrip = 0x0116
|
||||
StripByteCounts = 0x0117
|
||||
MinSampleValue = 0x0118
|
||||
MaxSampleValue = 0x0119
|
||||
XResolution = 0x011A
|
||||
YResolution = 0x011B
|
||||
PlanarConfiguration = 0x011C
|
||||
PageName = 0x011D
|
||||
FreeOffsets = 0x0120
|
||||
FreeByteCounts = 0x0121
|
||||
GrayResponseUnit = 0x0122
|
||||
GrayResponseCurve = 0x0123
|
||||
T4Options = 0x0124
|
||||
T6Options = 0x0125
|
||||
ResolutionUnit = 0x0128
|
||||
PageNumber = 0x0129
|
||||
TransferFunction = 0x012D
|
||||
Software = 0x0131
|
||||
DateTime = 0x0132
|
||||
Artist = 0x013B
|
||||
HostComputer = 0x013C
|
||||
Predictor = 0x013D
|
||||
WhitePoint = 0x013E
|
||||
PrimaryChromaticities = 0x013F
|
||||
ColorMap = 0x0140
|
||||
HalftoneHints = 0x0141
|
||||
TileWidth = 0x0142
|
||||
TileLength = 0x0143
|
||||
TileOffsets = 0x0144
|
||||
TileByteCounts = 0x0145
|
||||
SubIFDs = 0x014A
|
||||
InkSet = 0x014C
|
||||
InkNames = 0x014D
|
||||
NumberOfInks = 0x014E
|
||||
DotRange = 0x0150
|
||||
TargetPrinter = 0x0151
|
||||
ExtraSamples = 0x0152
|
||||
SampleFormat = 0x0153
|
||||
SMinSampleValue = 0x0154
|
||||
SMaxSampleValue = 0x0155
|
||||
TransferRange = 0x0156
|
||||
ClipPath = 0x0157
|
||||
XClipPathUnits = 0x0158
|
||||
YClipPathUnits = 0x0159
|
||||
Indexed = 0x015A
|
||||
JPEGTables = 0x015B
|
||||
OPIProxy = 0x015F
|
||||
JPEGProc = 0x0200
|
||||
JpegIFOffset = 0x0201
|
||||
JpegIFByteCount = 0x0202
|
||||
JpegRestartInterval = 0x0203
|
||||
JpegLosslessPredictors = 0x0205
|
||||
JpegPointTransforms = 0x0206
|
||||
JpegQTables = 0x0207
|
||||
JpegDCTables = 0x0208
|
||||
JpegACTables = 0x0209
|
||||
YCbCrCoefficients = 0x0211
|
||||
YCbCrSubSampling = 0x0212
|
||||
YCbCrPositioning = 0x0213
|
||||
ReferenceBlackWhite = 0x0214
|
||||
XMLPacket = 0x02BC
|
||||
RelatedImageFileFormat = 0x1000
|
||||
RelatedImageWidth = 0x1001
|
||||
RelatedImageLength = 0x1002
|
||||
Rating = 0x4746
|
||||
RatingPercent = 0x4749
|
||||
ImageID = 0x800D
|
||||
CFARepeatPatternDim = 0x828D
|
||||
BatteryLevel = 0x828F
|
||||
Copyright = 0x8298
|
||||
ExposureTime = 0x829A
|
||||
FNumber = 0x829D
|
||||
IPTCNAA = 0x83BB
|
||||
ImageResources = 0x8649
|
||||
ExifOffset = 0x8769
|
||||
InterColorProfile = 0x8773
|
||||
ExposureProgram = 0x8822
|
||||
SpectralSensitivity = 0x8824
|
||||
GPSInfo = 0x8825
|
||||
ISOSpeedRatings = 0x8827
|
||||
OECF = 0x8828
|
||||
Interlace = 0x8829
|
||||
TimeZoneOffset = 0x882A
|
||||
SelfTimerMode = 0x882B
|
||||
SensitivityType = 0x8830
|
||||
StandardOutputSensitivity = 0x8831
|
||||
RecommendedExposureIndex = 0x8832
|
||||
ISOSpeed = 0x8833
|
||||
ISOSpeedLatitudeyyy = 0x8834
|
||||
ISOSpeedLatitudezzz = 0x8835
|
||||
ExifVersion = 0x9000
|
||||
DateTimeOriginal = 0x9003
|
||||
DateTimeDigitized = 0x9004
|
||||
OffsetTime = 0x9010
|
||||
OffsetTimeOriginal = 0x9011
|
||||
OffsetTimeDigitized = 0x9012
|
||||
ComponentsConfiguration = 0x9101
|
||||
CompressedBitsPerPixel = 0x9102
|
||||
ShutterSpeedValue = 0x9201
|
||||
ApertureValue = 0x9202
|
||||
BrightnessValue = 0x9203
|
||||
ExposureBiasValue = 0x9204
|
||||
MaxApertureValue = 0x9205
|
||||
SubjectDistance = 0x9206
|
||||
MeteringMode = 0x9207
|
||||
LightSource = 0x9208
|
||||
Flash = 0x9209
|
||||
FocalLength = 0x920A
|
||||
Noise = 0x920D
|
||||
ImageNumber = 0x9211
|
||||
SecurityClassification = 0x9212
|
||||
ImageHistory = 0x9213
|
||||
TIFFEPStandardID = 0x9216
|
||||
MakerNote = 0x927C
|
||||
UserComment = 0x9286
|
||||
SubsecTime = 0x9290
|
||||
SubsecTimeOriginal = 0x9291
|
||||
SubsecTimeDigitized = 0x9292
|
||||
AmbientTemperature = 0x9400
|
||||
Humidity = 0x9401
|
||||
Pressure = 0x9402
|
||||
WaterDepth = 0x9403
|
||||
Acceleration = 0x9404
|
||||
CameraElevationAngle = 0x9405
|
||||
XPTitle = 0x9C9B
|
||||
XPComment = 0x9C9C
|
||||
XPAuthor = 0x9C9D
|
||||
XPKeywords = 0x9C9E
|
||||
XPSubject = 0x9C9F
|
||||
FlashPixVersion = 0xA000
|
||||
ColorSpace = 0xA001
|
||||
ExifImageWidth = 0xA002
|
||||
ExifImageHeight = 0xA003
|
||||
RelatedSoundFile = 0xA004
|
||||
ExifInteroperabilityOffset = 0xA005
|
||||
FlashEnergy = 0xA20B
|
||||
SpatialFrequencyResponse = 0xA20C
|
||||
FocalPlaneXResolution = 0xA20E
|
||||
FocalPlaneYResolution = 0xA20F
|
||||
FocalPlaneResolutionUnit = 0xA210
|
||||
SubjectLocation = 0xA214
|
||||
ExposureIndex = 0xA215
|
||||
SensingMethod = 0xA217
|
||||
FileSource = 0xA300
|
||||
SceneType = 0xA301
|
||||
CFAPattern = 0xA302
|
||||
CustomRendered = 0xA401
|
||||
ExposureMode = 0xA402
|
||||
WhiteBalance = 0xA403
|
||||
DigitalZoomRatio = 0xA404
|
||||
FocalLengthIn35mmFilm = 0xA405
|
||||
SceneCaptureType = 0xA406
|
||||
GainControl = 0xA407
|
||||
Contrast = 0xA408
|
||||
Saturation = 0xA409
|
||||
Sharpness = 0xA40A
|
||||
DeviceSettingDescription = 0xA40B
|
||||
SubjectDistanceRange = 0xA40C
|
||||
ImageUniqueID = 0xA420
|
||||
CameraOwnerName = 0xA430
|
||||
BodySerialNumber = 0xA431
|
||||
LensSpecification = 0xA432
|
||||
LensMake = 0xA433
|
||||
LensModel = 0xA434
|
||||
LensSerialNumber = 0xA435
|
||||
CompositeImage = 0xA460
|
||||
CompositeImageCount = 0xA461
|
||||
CompositeImageExposureTimes = 0xA462
|
||||
Gamma = 0xA500
|
||||
PrintImageMatching = 0xC4A5
|
||||
DNGVersion = 0xC612
|
||||
DNGBackwardVersion = 0xC613
|
||||
UniqueCameraModel = 0xC614
|
||||
LocalizedCameraModel = 0xC615
|
||||
CFAPlaneColor = 0xC616
|
||||
CFALayout = 0xC617
|
||||
LinearizationTable = 0xC618
|
||||
BlackLevelRepeatDim = 0xC619
|
||||
BlackLevel = 0xC61A
|
||||
BlackLevelDeltaH = 0xC61B
|
||||
BlackLevelDeltaV = 0xC61C
|
||||
WhiteLevel = 0xC61D
|
||||
DefaultScale = 0xC61E
|
||||
DefaultCropOrigin = 0xC61F
|
||||
DefaultCropSize = 0xC620
|
||||
ColorMatrix1 = 0xC621
|
||||
ColorMatrix2 = 0xC622
|
||||
CameraCalibration1 = 0xC623
|
||||
CameraCalibration2 = 0xC624
|
||||
ReductionMatrix1 = 0xC625
|
||||
ReductionMatrix2 = 0xC626
|
||||
AnalogBalance = 0xC627
|
||||
AsShotNeutral = 0xC628
|
||||
AsShotWhiteXY = 0xC629
|
||||
BaselineExposure = 0xC62A
|
||||
BaselineNoise = 0xC62B
|
||||
BaselineSharpness = 0xC62C
|
||||
BayerGreenSplit = 0xC62D
|
||||
LinearResponseLimit = 0xC62E
|
||||
CameraSerialNumber = 0xC62F
|
||||
LensInfo = 0xC630
|
||||
ChromaBlurRadius = 0xC631
|
||||
AntiAliasStrength = 0xC632
|
||||
ShadowScale = 0xC633
|
||||
DNGPrivateData = 0xC634
|
||||
MakerNoteSafety = 0xC635
|
||||
CalibrationIlluminant1 = 0xC65A
|
||||
CalibrationIlluminant2 = 0xC65B
|
||||
BestQualityScale = 0xC65C
|
||||
RawDataUniqueID = 0xC65D
|
||||
OriginalRawFileName = 0xC68B
|
||||
OriginalRawFileData = 0xC68C
|
||||
ActiveArea = 0xC68D
|
||||
MaskedAreas = 0xC68E
|
||||
AsShotICCProfile = 0xC68F
|
||||
AsShotPreProfileMatrix = 0xC690
|
||||
CurrentICCProfile = 0xC691
|
||||
CurrentPreProfileMatrix = 0xC692
|
||||
ColorimetricReference = 0xC6BF
|
||||
CameraCalibrationSignature = 0xC6F3
|
||||
ProfileCalibrationSignature = 0xC6F4
|
||||
AsShotProfileName = 0xC6F6
|
||||
NoiseReductionApplied = 0xC6F7
|
||||
ProfileName = 0xC6F8
|
||||
ProfileHueSatMapDims = 0xC6F9
|
||||
ProfileHueSatMapData1 = 0xC6FA
|
||||
ProfileHueSatMapData2 = 0xC6FB
|
||||
ProfileToneCurve = 0xC6FC
|
||||
ProfileEmbedPolicy = 0xC6FD
|
||||
ProfileCopyright = 0xC6FE
|
||||
ForwardMatrix1 = 0xC714
|
||||
ForwardMatrix2 = 0xC715
|
||||
PreviewApplicationName = 0xC716
|
||||
PreviewApplicationVersion = 0xC717
|
||||
PreviewSettingsName = 0xC718
|
||||
PreviewSettingsDigest = 0xC719
|
||||
PreviewColorSpace = 0xC71A
|
||||
PreviewDateTime = 0xC71B
|
||||
RawImageDigest = 0xC71C
|
||||
OriginalRawFileDigest = 0xC71D
|
||||
SubTileBlockSize = 0xC71E
|
||||
RowInterleaveFactor = 0xC71F
|
||||
ProfileLookTableDims = 0xC725
|
||||
ProfileLookTableData = 0xC726
|
||||
OpcodeList1 = 0xC740
|
||||
OpcodeList2 = 0xC741
|
||||
OpcodeList3 = 0xC74E
|
||||
NoiseProfile = 0xC761
|
||||
|
||||
|
||||
"""Maps EXIF tags to tag names."""
|
||||
TAGS = {
|
||||
**{i.value: i.name for i in Base},
|
||||
0x920C: "SpatialFrequencyResponse",
|
||||
0x9214: "SubjectLocation",
|
||||
0x9215: "ExposureIndex",
|
||||
0x828E: "CFAPattern",
|
||||
0x920B: "FlashEnergy",
|
||||
0x9216: "TIFF/EPStandardID",
|
||||
}
|
||||
|
||||
|
||||
class GPS(IntEnum):
|
||||
GPSVersionID = 0x00
|
||||
GPSLatitudeRef = 0x01
|
||||
GPSLatitude = 0x02
|
||||
GPSLongitudeRef = 0x03
|
||||
GPSLongitude = 0x04
|
||||
GPSAltitudeRef = 0x05
|
||||
GPSAltitude = 0x06
|
||||
GPSTimeStamp = 0x07
|
||||
GPSSatellites = 0x08
|
||||
GPSStatus = 0x09
|
||||
GPSMeasureMode = 0x0A
|
||||
GPSDOP = 0x0B
|
||||
GPSSpeedRef = 0x0C
|
||||
GPSSpeed = 0x0D
|
||||
GPSTrackRef = 0x0E
|
||||
GPSTrack = 0x0F
|
||||
GPSImgDirectionRef = 0x10
|
||||
GPSImgDirection = 0x11
|
||||
GPSMapDatum = 0x12
|
||||
GPSDestLatitudeRef = 0x13
|
||||
GPSDestLatitude = 0x14
|
||||
GPSDestLongitudeRef = 0x15
|
||||
GPSDestLongitude = 0x16
|
||||
GPSDestBearingRef = 0x17
|
||||
GPSDestBearing = 0x18
|
||||
GPSDestDistanceRef = 0x19
|
||||
GPSDestDistance = 0x1A
|
||||
GPSProcessingMethod = 0x1B
|
||||
GPSAreaInformation = 0x1C
|
||||
GPSDateStamp = 0x1D
|
||||
GPSDifferential = 0x1E
|
||||
GPSHPositioningError = 0x1F
|
||||
|
||||
|
||||
"""Maps EXIF GPS tags to tag names."""
|
||||
GPSTAGS = {i.value: i.name for i in GPS}
|
||||
|
||||
|
||||
class Interop(IntEnum):
|
||||
InteropIndex = 0x0001
|
||||
InteropVersion = 0x0002
|
||||
RelatedImageFileFormat = 0x1000
|
||||
RelatedImageWidth = 0x1001
|
||||
RelatedImageHeight = 0x1002
|
||||
|
||||
|
||||
class IFD(IntEnum):
|
||||
Exif = 0x8769
|
||||
GPSInfo = 0x8825
|
||||
MakerNote = 0x927C
|
||||
Makernote = 0x927C # Deprecated
|
||||
Interop = 0xA005
|
||||
IFD1 = -1
|
||||
|
||||
|
||||
class LightSource(IntEnum):
|
||||
Unknown = 0x00
|
||||
Daylight = 0x01
|
||||
Fluorescent = 0x02
|
||||
Tungsten = 0x03
|
||||
Flash = 0x04
|
||||
Fine = 0x09
|
||||
Cloudy = 0x0A
|
||||
Shade = 0x0B
|
||||
DaylightFluorescent = 0x0C
|
||||
DayWhiteFluorescent = 0x0D
|
||||
CoolWhiteFluorescent = 0x0E
|
||||
WhiteFluorescent = 0x0F
|
||||
StandardLightA = 0x11
|
||||
StandardLightB = 0x12
|
||||
StandardLightC = 0x13
|
||||
D55 = 0x14
|
||||
D65 = 0x15
|
||||
D75 = 0x16
|
||||
D50 = 0x17
|
||||
ISO = 0x18
|
||||
Other = 0xFF
|
||||
@ -0,0 +1,152 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# FITS file handling
|
||||
#
|
||||
# Copyright (c) 1998-2003 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import gzip
|
||||
import math
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(b"SIMPLE")
|
||||
|
||||
|
||||
class FitsImageFile(ImageFile.ImageFile):
|
||||
format = "FITS"
|
||||
format_description = "FITS"
|
||||
|
||||
def _open(self) -> None:
|
||||
assert self.fp is not None
|
||||
|
||||
headers: dict[bytes, bytes] = {}
|
||||
header_in_progress = False
|
||||
decoder_name = ""
|
||||
while True:
|
||||
header = self.fp.read(80)
|
||||
if not header:
|
||||
msg = "Truncated FITS file"
|
||||
raise OSError(msg)
|
||||
keyword = header[:8].strip()
|
||||
if keyword in (b"SIMPLE", b"XTENSION"):
|
||||
header_in_progress = True
|
||||
elif headers and not header_in_progress:
|
||||
# This is now a data unit
|
||||
break
|
||||
elif keyword == b"END":
|
||||
# Seek to the end of the header unit
|
||||
self.fp.seek(math.ceil(self.fp.tell() / 2880) * 2880)
|
||||
if not decoder_name:
|
||||
decoder_name, offset, args = self._parse_headers(headers)
|
||||
|
||||
header_in_progress = False
|
||||
continue
|
||||
|
||||
if decoder_name:
|
||||
# Keep going to read past the headers
|
||||
continue
|
||||
|
||||
value = header[8:].split(b"/")[0].strip()
|
||||
if value.startswith(b"="):
|
||||
value = value[1:].strip()
|
||||
if not headers and (not _accept(keyword) or value != b"T"):
|
||||
msg = "Not a FITS file"
|
||||
raise SyntaxError(msg)
|
||||
headers[keyword] = value
|
||||
|
||||
if not decoder_name:
|
||||
msg = "No image data"
|
||||
raise ValueError(msg)
|
||||
|
||||
offset += self.fp.tell() - 80
|
||||
self.tile = [ImageFile._Tile(decoder_name, (0, 0) + self.size, offset, args)]
|
||||
|
||||
def _get_size(
|
||||
self, headers: dict[bytes, bytes], prefix: bytes
|
||||
) -> tuple[int, int] | None:
|
||||
naxis = int(headers[prefix + b"NAXIS"])
|
||||
if naxis == 0:
|
||||
return None
|
||||
|
||||
if naxis == 1:
|
||||
return 1, int(headers[prefix + b"NAXIS1"])
|
||||
else:
|
||||
return int(headers[prefix + b"NAXIS1"]), int(headers[prefix + b"NAXIS2"])
|
||||
|
||||
def _parse_headers(
|
||||
self, headers: dict[bytes, bytes]
|
||||
) -> tuple[str, int, tuple[str | int, ...]]:
|
||||
prefix = b""
|
||||
decoder_name = "raw"
|
||||
offset = 0
|
||||
if (
|
||||
headers.get(b"XTENSION") == b"'BINTABLE'"
|
||||
and headers.get(b"ZIMAGE") == b"T"
|
||||
and headers[b"ZCMPTYPE"] == b"'GZIP_1 '"
|
||||
):
|
||||
no_prefix_size = self._get_size(headers, prefix) or (0, 0)
|
||||
number_of_bits = int(headers[b"BITPIX"])
|
||||
offset = no_prefix_size[0] * no_prefix_size[1] * (number_of_bits // 8)
|
||||
|
||||
prefix = b"Z"
|
||||
decoder_name = "fits_gzip"
|
||||
|
||||
size = self._get_size(headers, prefix)
|
||||
if not size:
|
||||
return "", 0, ()
|
||||
|
||||
self._size = size
|
||||
|
||||
number_of_bits = int(headers[prefix + b"BITPIX"])
|
||||
if number_of_bits == 8:
|
||||
self._mode = "L"
|
||||
elif number_of_bits == 16:
|
||||
self._mode = "I;16"
|
||||
elif number_of_bits == 32:
|
||||
self._mode = "I"
|
||||
elif number_of_bits in (-32, -64):
|
||||
self._mode = "F"
|
||||
|
||||
args: tuple[str | int, ...]
|
||||
if decoder_name == "raw":
|
||||
args = (self.mode, 0, -1)
|
||||
else:
|
||||
args = (number_of_bits,)
|
||||
return decoder_name, offset, args
|
||||
|
||||
|
||||
class FitsGzipDecoder(ImageFile.PyDecoder):
|
||||
_pulls_fd = True
|
||||
|
||||
def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
|
||||
assert self.fd is not None
|
||||
value = gzip.decompress(self.fd.read())
|
||||
|
||||
rows = []
|
||||
offset = 0
|
||||
number_of_bits = min(self.args[0] // 8, 4)
|
||||
for y in range(self.state.ysize):
|
||||
row = bytearray()
|
||||
for x in range(self.state.xsize):
|
||||
row += value[offset + (4 - number_of_bits) : offset + 4]
|
||||
offset += 4
|
||||
rows.append(row)
|
||||
self.set_as_raw(bytes([pixel for row in rows[::-1] for pixel in row]))
|
||||
return -1, 0
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Registry
|
||||
|
||||
Image.register_open(FitsImageFile.format, FitsImageFile, _accept)
|
||||
Image.register_decoder("fits_gzip", FitsGzipDecoder)
|
||||
|
||||
Image.register_extensions(FitsImageFile.format, [".fit", ".fits"])
|
||||
@ -0,0 +1,184 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# FLI/FLC file handling.
|
||||
#
|
||||
# History:
|
||||
# 95-09-01 fl Created
|
||||
# 97-01-03 fl Fixed parser, setup decoder tile
|
||||
# 98-07-15 fl Renamed offset attribute to avoid name clash
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997-98.
|
||||
# Copyright (c) Fredrik Lundh 1995-97.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
|
||||
from . import Image, ImageFile, ImagePalette
|
||||
from ._binary import i16le as i16
|
||||
from ._binary import i32le as i32
|
||||
from ._binary import o8
|
||||
from ._util import DeferredError
|
||||
|
||||
#
|
||||
# decoder
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return (
|
||||
len(prefix) >= 16
|
||||
and i16(prefix, 4) in [0xAF11, 0xAF12]
|
||||
and i16(prefix, 14) in [0, 3] # flags
|
||||
)
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for the FLI/FLC animation format. Use the <b>seek</b>
|
||||
# method to load individual frames.
|
||||
|
||||
|
||||
class FliImageFile(ImageFile.ImageFile):
|
||||
format = "FLI"
|
||||
format_description = "Autodesk FLI/FLC Animation"
|
||||
_close_exclusive_fp_after_loading = False
|
||||
|
||||
def _open(self) -> None:
|
||||
# HEAD
|
||||
assert self.fp is not None
|
||||
s = self.fp.read(128)
|
||||
if not (
|
||||
_accept(s)
|
||||
and s[20:22] == b"\x00" * 2
|
||||
and s[42:80] == b"\x00" * 38
|
||||
and s[88:] == b"\x00" * 40
|
||||
):
|
||||
msg = "not an FLI/FLC file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
# frames
|
||||
self.n_frames = i16(s, 6)
|
||||
self.is_animated = self.n_frames > 1
|
||||
|
||||
# image characteristics
|
||||
self._mode = "P"
|
||||
self._size = i16(s, 8), i16(s, 10)
|
||||
|
||||
# animation speed
|
||||
duration = i32(s, 16)
|
||||
magic = i16(s, 4)
|
||||
if magic == 0xAF11:
|
||||
duration = (duration * 1000) // 70
|
||||
self.info["duration"] = duration
|
||||
|
||||
# look for palette
|
||||
palette = [(a, a, a) for a in range(256)]
|
||||
|
||||
s = self.fp.read(16)
|
||||
|
||||
self.__offset = 128
|
||||
|
||||
if i16(s, 4) == 0xF100:
|
||||
# prefix chunk; ignore it
|
||||
self.fp.seek(self.__offset + i32(s))
|
||||
s = self.fp.read(16)
|
||||
|
||||
if i16(s, 4) == 0xF1FA:
|
||||
# look for palette chunk
|
||||
number_of_subchunks = i16(s, 6)
|
||||
chunk_size: int | None = None
|
||||
for _ in range(number_of_subchunks):
|
||||
if chunk_size is not None:
|
||||
self.fp.seek(chunk_size - 6, os.SEEK_CUR)
|
||||
s = self.fp.read(6)
|
||||
chunk_type = i16(s, 4)
|
||||
if chunk_type in (4, 11):
|
||||
self._palette(palette, 2 if chunk_type == 11 else 0)
|
||||
break
|
||||
chunk_size = i32(s)
|
||||
if not chunk_size:
|
||||
break
|
||||
|
||||
self.palette = ImagePalette.raw(
|
||||
"RGB", b"".join(o8(r) + o8(g) + o8(b) for (r, g, b) in palette)
|
||||
)
|
||||
|
||||
# set things up to decode first frame
|
||||
self.__frame = -1
|
||||
self._fp = self.fp
|
||||
self.__rewind = self.fp.tell()
|
||||
self.seek(0)
|
||||
|
||||
def _palette(self, palette: list[tuple[int, int, int]], shift: int) -> None:
|
||||
# load palette
|
||||
|
||||
i = 0
|
||||
assert self.fp is not None
|
||||
for e in range(i16(self.fp.read(2))):
|
||||
s = self.fp.read(2)
|
||||
i = i + s[0]
|
||||
n = s[1]
|
||||
if n == 0:
|
||||
n = 256
|
||||
s = self.fp.read(n * 3)
|
||||
for n in range(0, len(s), 3):
|
||||
r = s[n] << shift
|
||||
g = s[n + 1] << shift
|
||||
b = s[n + 2] << shift
|
||||
palette[i] = (r, g, b)
|
||||
i += 1
|
||||
|
||||
def seek(self, frame: int) -> None:
|
||||
if not self._seek_check(frame):
|
||||
return
|
||||
if frame < self.__frame:
|
||||
self._seek(0)
|
||||
|
||||
for f in range(self.__frame + 1, frame + 1):
|
||||
self._seek(f)
|
||||
|
||||
def _seek(self, frame: int) -> None:
|
||||
if isinstance(self._fp, DeferredError):
|
||||
raise self._fp.ex
|
||||
if frame == 0:
|
||||
self.__frame = -1
|
||||
self._fp.seek(self.__rewind)
|
||||
self.__offset = 128
|
||||
else:
|
||||
# ensure that the previous frame was loaded
|
||||
self.load()
|
||||
|
||||
if frame != self.__frame + 1:
|
||||
msg = f"cannot seek to frame {frame}"
|
||||
raise ValueError(msg)
|
||||
self.__frame = frame
|
||||
|
||||
# move to next frame
|
||||
self.fp = self._fp
|
||||
self.fp.seek(self.__offset)
|
||||
|
||||
s = self.fp.read(4)
|
||||
if not s:
|
||||
msg = "missing frame size"
|
||||
raise EOFError(msg)
|
||||
|
||||
framesize = i32(s)
|
||||
|
||||
self.decodermaxblock = framesize
|
||||
self.tile = [ImageFile._Tile("fli", (0, 0) + self.size, self.__offset)]
|
||||
|
||||
self.__offset += framesize
|
||||
|
||||
def tell(self) -> int:
|
||||
return self.__frame
|
||||
|
||||
|
||||
#
|
||||
# registry
|
||||
|
||||
Image.register_open(FliImageFile.format, FliImageFile, _accept)
|
||||
|
||||
Image.register_extensions(FliImageFile.format, [".fli", ".flc"])
|
||||
@ -0,0 +1,134 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# base class for raster font file parsers
|
||||
#
|
||||
# history:
|
||||
# 1997-06-05 fl created
|
||||
# 1997-08-19 fl restrict image width
|
||||
#
|
||||
# Copyright (c) 1997-1998 by Secret Labs AB
|
||||
# Copyright (c) 1997-1998 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
from typing import BinaryIO
|
||||
|
||||
from . import Image, _binary
|
||||
|
||||
WIDTH = 800
|
||||
|
||||
|
||||
def puti16(
|
||||
fp: BinaryIO, values: tuple[int, int, int, int, int, int, int, int, int, int]
|
||||
) -> None:
|
||||
"""Write network order (big-endian) 16-bit sequence"""
|
||||
for v in values:
|
||||
if v < 0:
|
||||
v += 65536
|
||||
fp.write(_binary.o16be(v))
|
||||
|
||||
|
||||
class FontFile:
|
||||
"""Base class for raster font file handlers."""
|
||||
|
||||
bitmap: Image.Image | None = None
|
||||
|
||||
def __init__(self) -> None:
|
||||
self.info: dict[bytes, bytes | int] = {}
|
||||
self.glyph: list[
|
||||
tuple[
|
||||
tuple[int, int],
|
||||
tuple[int, int, int, int],
|
||||
tuple[int, int, int, int],
|
||||
Image.Image,
|
||||
]
|
||||
| None
|
||||
] = [None] * 256
|
||||
|
||||
def __getitem__(self, ix: int) -> (
|
||||
tuple[
|
||||
tuple[int, int],
|
||||
tuple[int, int, int, int],
|
||||
tuple[int, int, int, int],
|
||||
Image.Image,
|
||||
]
|
||||
| None
|
||||
):
|
||||
return self.glyph[ix]
|
||||
|
||||
def compile(self) -> None:
|
||||
"""Create metrics and bitmap"""
|
||||
|
||||
if self.bitmap:
|
||||
return
|
||||
|
||||
# create bitmap large enough to hold all data
|
||||
h = w = maxwidth = 0
|
||||
lines = 1
|
||||
for glyph in self.glyph:
|
||||
if glyph:
|
||||
d, dst, src, im = glyph
|
||||
h = max(h, src[3] - src[1])
|
||||
w = w + (src[2] - src[0])
|
||||
if w > WIDTH:
|
||||
lines += 1
|
||||
w = src[2] - src[0]
|
||||
maxwidth = max(maxwidth, w)
|
||||
|
||||
xsize = maxwidth
|
||||
ysize = lines * h
|
||||
|
||||
if xsize == 0 and ysize == 0:
|
||||
return
|
||||
|
||||
self.ysize = h
|
||||
|
||||
# paste glyphs into bitmap
|
||||
self.bitmap = Image.new("1", (xsize, ysize))
|
||||
self.metrics: list[
|
||||
tuple[tuple[int, int], tuple[int, int, int, int], tuple[int, int, int, int]]
|
||||
| None
|
||||
] = [None] * 256
|
||||
x = y = 0
|
||||
for i in range(256):
|
||||
glyph = self[i]
|
||||
if glyph:
|
||||
d, dst, src, im = glyph
|
||||
xx = src[2] - src[0]
|
||||
x0, y0 = x, y
|
||||
x = x + xx
|
||||
if x > WIDTH:
|
||||
x, y = 0, y + h
|
||||
x0, y0 = x, y
|
||||
x = xx
|
||||
s = src[0] + x0, src[1] + y0, src[2] + x0, src[3] + y0
|
||||
self.bitmap.paste(im.crop(src), s)
|
||||
self.metrics[i] = d, dst, s
|
||||
|
||||
def save(self, filename: str) -> None:
|
||||
"""Save font"""
|
||||
|
||||
self.compile()
|
||||
|
||||
# font data
|
||||
if not self.bitmap:
|
||||
msg = "No bitmap created"
|
||||
raise ValueError(msg)
|
||||
self.bitmap.save(os.path.splitext(filename)[0] + ".pbm", "PNG")
|
||||
|
||||
# font metrics
|
||||
with open(os.path.splitext(filename)[0] + ".pil", "wb") as fp:
|
||||
fp.write(b"PILfont\n")
|
||||
fp.write(f";;;;;;{self.ysize};\n".encode("ascii")) # HACK!!!
|
||||
fp.write(b"DATA\n")
|
||||
for id in range(256):
|
||||
m = self.metrics[id]
|
||||
if not m:
|
||||
puti16(fp, (0,) * 10)
|
||||
else:
|
||||
puti16(fp, m[0] + m[1] + m[2])
|
||||
@ -0,0 +1,257 @@
|
||||
#
|
||||
# THIS IS WORK IN PROGRESS
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# FlashPix support for PIL
|
||||
#
|
||||
# History:
|
||||
# 97-01-25 fl Created (reads uncompressed RGB images only)
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1997.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import olefile
|
||||
|
||||
from . import Image, ImageFile
|
||||
from ._binary import i32le as i32
|
||||
|
||||
# we map from colour field tuples to (mode, rawmode) descriptors
|
||||
MODES = {
|
||||
# opacity
|
||||
(0x00007FFE,): ("A", "L"),
|
||||
# monochrome
|
||||
(0x00010000,): ("L", "L"),
|
||||
(0x00018000, 0x00017FFE): ("RGBA", "LA"),
|
||||
# photo YCC
|
||||
(0x00020000, 0x00020001, 0x00020002): ("RGB", "YCC;P"),
|
||||
(0x00028000, 0x00028001, 0x00028002, 0x00027FFE): ("RGBA", "YCCA;P"),
|
||||
# standard RGB (NIFRGB)
|
||||
(0x00030000, 0x00030001, 0x00030002): ("RGB", "RGB"),
|
||||
(0x00038000, 0x00038001, 0x00038002, 0x00037FFE): ("RGBA", "RGBA"),
|
||||
}
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(olefile.MAGIC)
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for the FlashPix images.
|
||||
|
||||
|
||||
class FpxImageFile(ImageFile.ImageFile):
|
||||
format = "FPX"
|
||||
format_description = "FlashPix"
|
||||
|
||||
def _open(self) -> None:
|
||||
#
|
||||
# read the OLE directory and see if this is a likely
|
||||
# to be a FlashPix file
|
||||
|
||||
try:
|
||||
self.ole = olefile.OleFileIO(self.fp)
|
||||
except OSError as e:
|
||||
msg = "not an FPX file; invalid OLE file"
|
||||
raise SyntaxError(msg) from e
|
||||
|
||||
root = self.ole.root
|
||||
if not root or root.clsid != "56616700-C154-11CE-8553-00AA00A1F95B":
|
||||
msg = "not an FPX file; bad root CLSID"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self._open_index(1)
|
||||
|
||||
def _open_index(self, index: int = 1) -> None:
|
||||
#
|
||||
# get the Image Contents Property Set
|
||||
|
||||
prop = self.ole.getproperties(
|
||||
[f"Data Object Store {index:06d}", "\005Image Contents"]
|
||||
)
|
||||
|
||||
# size (highest resolution)
|
||||
|
||||
assert isinstance(prop[0x1000002], int)
|
||||
assert isinstance(prop[0x1000003], int)
|
||||
self._size = prop[0x1000002], prop[0x1000003]
|
||||
|
||||
size = max(self.size)
|
||||
i = 1
|
||||
while size > 64:
|
||||
size = size // 2
|
||||
i += 1
|
||||
self.maxid = i - 1
|
||||
|
||||
# mode. instead of using a single field for this, flashpix
|
||||
# requires you to specify the mode for each channel in each
|
||||
# resolution subimage, and leaves it to the decoder to make
|
||||
# sure that they all match. for now, we'll cheat and assume
|
||||
# that this is always the case.
|
||||
|
||||
id = self.maxid << 16
|
||||
|
||||
s = prop[0x2000002 | id]
|
||||
|
||||
if not isinstance(s, bytes) or (bands := i32(s, 4)) > 4:
|
||||
msg = "Invalid number of bands"
|
||||
raise OSError(msg)
|
||||
|
||||
# note: for now, we ignore the "uncalibrated" flag
|
||||
colors = tuple(i32(s, 8 + i * 4) & 0x7FFFFFFF for i in range(bands))
|
||||
|
||||
self._mode, self.rawmode = MODES[colors]
|
||||
|
||||
# load JPEG tables, if any
|
||||
self.jpeg = {}
|
||||
for i in range(256):
|
||||
id = 0x3000001 | (i << 16)
|
||||
if id in prop:
|
||||
self.jpeg[i] = prop[id]
|
||||
|
||||
self._open_subimage(1, self.maxid)
|
||||
|
||||
def _open_subimage(self, index: int = 1, subimage: int = 0) -> None:
|
||||
#
|
||||
# setup tile descriptors for a given subimage
|
||||
|
||||
stream = [
|
||||
f"Data Object Store {index:06d}",
|
||||
f"Resolution {subimage:04d}",
|
||||
"Subimage 0000 Header",
|
||||
]
|
||||
|
||||
fp = self.ole.openstream(stream)
|
||||
|
||||
# skip prefix
|
||||
fp.read(28)
|
||||
|
||||
# header stream
|
||||
s = fp.read(36)
|
||||
|
||||
size = i32(s, 4), i32(s, 8)
|
||||
# tilecount = i32(s, 12)
|
||||
tilesize = i32(s, 16), i32(s, 20)
|
||||
# channels = i32(s, 24)
|
||||
offset = i32(s, 28)
|
||||
length = i32(s, 32)
|
||||
|
||||
if size != self.size:
|
||||
msg = "subimage mismatch"
|
||||
raise OSError(msg)
|
||||
|
||||
# get tile descriptors
|
||||
fp.seek(28 + offset)
|
||||
s = fp.read(i32(s, 12) * length)
|
||||
|
||||
x = y = 0
|
||||
xsize, ysize = size
|
||||
xtile, ytile = tilesize
|
||||
self.tile = []
|
||||
|
||||
for i in range(0, len(s), length):
|
||||
x1 = min(xsize, x + xtile)
|
||||
y1 = min(ysize, y + ytile)
|
||||
|
||||
compression = i32(s, i + 8)
|
||||
|
||||
if compression == 0:
|
||||
self.tile.append(
|
||||
ImageFile._Tile(
|
||||
"raw",
|
||||
(x, y, x1, y1),
|
||||
i32(s, i) + 28,
|
||||
self.rawmode,
|
||||
)
|
||||
)
|
||||
|
||||
elif compression == 1:
|
||||
# FIXME: the fill decoder is not implemented
|
||||
self.tile.append(
|
||||
ImageFile._Tile(
|
||||
"fill",
|
||||
(x, y, x1, y1),
|
||||
i32(s, i) + 28,
|
||||
(self.rawmode, s[12:16]),
|
||||
)
|
||||
)
|
||||
|
||||
elif compression == 2:
|
||||
internal_color_conversion = s[14]
|
||||
jpeg_tables = s[15]
|
||||
rawmode = self.rawmode
|
||||
|
||||
if internal_color_conversion:
|
||||
# The image is stored as usual (usually YCbCr).
|
||||
if rawmode == "RGBA":
|
||||
# For "RGBA", data is stored as YCbCrA based on
|
||||
# negative RGB. The following trick works around
|
||||
# this problem :
|
||||
jpegmode, rawmode = "YCbCrK", "CMYK"
|
||||
else:
|
||||
jpegmode = None # let the decoder decide
|
||||
|
||||
else:
|
||||
# The image is stored as defined by rawmode
|
||||
jpegmode = rawmode
|
||||
|
||||
self.tile.append(
|
||||
ImageFile._Tile(
|
||||
"jpeg",
|
||||
(x, y, x1, y1),
|
||||
i32(s, i) + 28,
|
||||
(rawmode, jpegmode),
|
||||
)
|
||||
)
|
||||
|
||||
# FIXME: jpeg tables are tile dependent; the prefix
|
||||
# data must be placed in the tile descriptor itself!
|
||||
|
||||
if jpeg_tables:
|
||||
self.tile_prefix = self.jpeg[jpeg_tables]
|
||||
|
||||
else:
|
||||
msg = "unknown/invalid compression"
|
||||
raise OSError(msg)
|
||||
|
||||
x = x + xtile
|
||||
if x >= xsize:
|
||||
x, y = 0, y + ytile
|
||||
if y >= ysize:
|
||||
break # isn't really required
|
||||
|
||||
self.stream = stream
|
||||
self._fp = self.fp
|
||||
self.fp = None
|
||||
|
||||
def load(self) -> Image.core.PixelAccess | None:
|
||||
if not self.fp:
|
||||
self.fp = self.ole.openstream(self.stream[:2] + ["Subimage 0000 Data"])
|
||||
|
||||
return ImageFile.ImageFile.load(self)
|
||||
|
||||
def close(self) -> None:
|
||||
self.ole.close()
|
||||
super().close()
|
||||
|
||||
def __exit__(self, *args: object) -> None:
|
||||
self.ole.close()
|
||||
super().__exit__()
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
Image.register_open(FpxImageFile.format, FpxImageFile, _accept)
|
||||
|
||||
Image.register_extension(FpxImageFile.format, ".fpx")
|
||||
@ -0,0 +1,114 @@
|
||||
"""
|
||||
A Pillow loader for .ftc and .ftu files (FTEX)
|
||||
Jerome Leclanche <jerome@leclan.ch>
|
||||
|
||||
The contents of this file are hereby released in the public domain (CC0)
|
||||
Full text of the CC0 license:
|
||||
https://creativecommons.org/publicdomain/zero/1.0/
|
||||
|
||||
Independence War 2: Edge Of Chaos - Texture File Format - 16 October 2001
|
||||
|
||||
The textures used for 3D objects in Independence War 2: Edge Of Chaos are in a
|
||||
packed custom format called FTEX. This file format uses file extensions FTC
|
||||
and FTU.
|
||||
* FTC files are compressed textures (using standard texture compression).
|
||||
* FTU files are not compressed.
|
||||
Texture File Format
|
||||
The FTC and FTU texture files both use the same format. This
|
||||
has the following structure:
|
||||
{header}
|
||||
{format_directory}
|
||||
{data}
|
||||
Where:
|
||||
{header} = {
|
||||
u32:magic,
|
||||
u32:version,
|
||||
u32:width,
|
||||
u32:height,
|
||||
u32:mipmap_count,
|
||||
u32:format_count
|
||||
}
|
||||
|
||||
* The "magic" number is "FTEX".
|
||||
* "width" and "height" are the dimensions of the texture.
|
||||
* "mipmap_count" is the number of mipmaps in the texture.
|
||||
* "format_count" is the number of texture formats (different versions of the
|
||||
same texture) in this file.
|
||||
|
||||
{format_directory} = format_count * { u32:format, u32:where }
|
||||
|
||||
The format value is 0 for DXT1 compressed textures and 1 for 24-bit RGB
|
||||
uncompressed textures.
|
||||
The texture data for a format starts at the position "where" in the file.
|
||||
|
||||
Each set of texture data in the file has the following structure:
|
||||
{data} = format_count * { u32:mipmap_size, mipmap_size * { u8 } }
|
||||
* "mipmap_size" is the number of bytes in that mip level. For compressed
|
||||
textures this is the size of the texture data compressed with DXT1. For 24 bit
|
||||
uncompressed textures, this is 3 * width * height. Following this are the image
|
||||
bytes for that mipmap level.
|
||||
|
||||
Note: All data is stored in little-Endian (Intel) byte order.
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
import struct
|
||||
from enum import IntEnum
|
||||
from io import BytesIO
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
MAGIC = b"FTEX"
|
||||
|
||||
|
||||
class Format(IntEnum):
|
||||
DXT1 = 0
|
||||
UNCOMPRESSED = 1
|
||||
|
||||
|
||||
class FtexImageFile(ImageFile.ImageFile):
|
||||
format = "FTEX"
|
||||
format_description = "Texture File Format (IW2:EOC)"
|
||||
|
||||
def _open(self) -> None:
|
||||
if not _accept(self.fp.read(4)):
|
||||
msg = "not an FTEX file"
|
||||
raise SyntaxError(msg)
|
||||
struct.unpack("<i", self.fp.read(4)) # version
|
||||
self._size = struct.unpack("<2i", self.fp.read(8))
|
||||
mipmap_count, format_count = struct.unpack("<2i", self.fp.read(8))
|
||||
|
||||
# Only support single-format files.
|
||||
# I don't know of any multi-format file.
|
||||
assert format_count == 1
|
||||
|
||||
format, where = struct.unpack("<2i", self.fp.read(8))
|
||||
self.fp.seek(where)
|
||||
(mipmap_size,) = struct.unpack("<i", self.fp.read(4))
|
||||
|
||||
data = self.fp.read(mipmap_size)
|
||||
|
||||
if format == Format.DXT1:
|
||||
self._mode = "RGBA"
|
||||
self.tile = [ImageFile._Tile("bcn", (0, 0) + self.size, 0, (1,))]
|
||||
elif format == Format.UNCOMPRESSED:
|
||||
self._mode = "RGB"
|
||||
self.tile = [ImageFile._Tile("raw", (0, 0) + self.size, 0, "RGB")]
|
||||
else:
|
||||
msg = f"Invalid texture compression format: {repr(format)}"
|
||||
raise ValueError(msg)
|
||||
|
||||
self.fp.close()
|
||||
self.fp = BytesIO(data)
|
||||
|
||||
def load_seek(self, pos: int) -> None:
|
||||
pass
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(MAGIC)
|
||||
|
||||
|
||||
Image.register_open(FtexImageFile.format, FtexImageFile, _accept)
|
||||
Image.register_extensions(FtexImageFile.format, [".ftc", ".ftu"])
|
||||
@ -0,0 +1,101 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
#
|
||||
# load a GIMP brush file
|
||||
#
|
||||
# History:
|
||||
# 96-03-14 fl Created
|
||||
# 16-01-08 es Version 2
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1996.
|
||||
# Copyright (c) Eric Soroos 2016.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
#
|
||||
# See https://github.com/GNOME/gimp/blob/mainline/devel-docs/gbr.txt for
|
||||
# format documentation.
|
||||
#
|
||||
# This code Interprets version 1 and 2 .gbr files.
|
||||
# Version 1 files are obsolete, and should not be used for new
|
||||
# brushes.
|
||||
# Version 2 files are saved by GIMP v2.8 (at least)
|
||||
# Version 3 files have a format specifier of 18 for 16bit floats in
|
||||
# the color depth field. This is currently unsupported by Pillow.
|
||||
from __future__ import annotations
|
||||
|
||||
from . import Image, ImageFile
|
||||
from ._binary import i32be as i32
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return len(prefix) >= 8 and i32(prefix, 0) >= 20 and i32(prefix, 4) in (1, 2)
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for the GIMP brush format.
|
||||
|
||||
|
||||
class GbrImageFile(ImageFile.ImageFile):
|
||||
format = "GBR"
|
||||
format_description = "GIMP brush file"
|
||||
|
||||
def _open(self) -> None:
|
||||
header_size = i32(self.fp.read(4))
|
||||
if header_size < 20:
|
||||
msg = "not a GIMP brush"
|
||||
raise SyntaxError(msg)
|
||||
version = i32(self.fp.read(4))
|
||||
if version not in (1, 2):
|
||||
msg = f"Unsupported GIMP brush version: {version}"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
width = i32(self.fp.read(4))
|
||||
height = i32(self.fp.read(4))
|
||||
color_depth = i32(self.fp.read(4))
|
||||
if width == 0 or height == 0:
|
||||
msg = "not a GIMP brush"
|
||||
raise SyntaxError(msg)
|
||||
if color_depth not in (1, 4):
|
||||
msg = f"Unsupported GIMP brush color depth: {color_depth}"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
if version == 1:
|
||||
comment_length = header_size - 20
|
||||
else:
|
||||
comment_length = header_size - 28
|
||||
magic_number = self.fp.read(4)
|
||||
if magic_number != b"GIMP":
|
||||
msg = "not a GIMP brush, bad magic number"
|
||||
raise SyntaxError(msg)
|
||||
self.info["spacing"] = i32(self.fp.read(4))
|
||||
|
||||
self.info["comment"] = self.fp.read(comment_length)[:-1]
|
||||
|
||||
if color_depth == 1:
|
||||
self._mode = "L"
|
||||
else:
|
||||
self._mode = "RGBA"
|
||||
|
||||
self._size = width, height
|
||||
|
||||
# Image might not be small
|
||||
Image._decompression_bomb_check(self.size)
|
||||
|
||||
# Data is an uncompressed block of w * h * bytes/pixel
|
||||
self._data_size = width * height * color_depth
|
||||
|
||||
def load(self) -> Image.core.PixelAccess | None:
|
||||
if self._im is None:
|
||||
self.im = Image.core.new(self.mode, self.size)
|
||||
self.frombytes(self.fp.read(self._data_size))
|
||||
return Image.Image.load(self)
|
||||
|
||||
|
||||
#
|
||||
# registry
|
||||
|
||||
|
||||
Image.register_open(GbrImageFile.format, GbrImageFile, _accept)
|
||||
Image.register_extension(GbrImageFile.format, ".gbr")
|
||||
@ -0,0 +1,102 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# GD file handling
|
||||
#
|
||||
# History:
|
||||
# 1996-04-12 fl Created
|
||||
#
|
||||
# Copyright (c) 1997 by Secret Labs AB.
|
||||
# Copyright (c) 1996 by Fredrik Lundh.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
|
||||
|
||||
"""
|
||||
.. note::
|
||||
This format cannot be automatically recognized, so the
|
||||
class is not registered for use with :py:func:`PIL.Image.open()`. To open a
|
||||
gd file, use the :py:func:`PIL.GdImageFile.open()` function instead.
|
||||
|
||||
.. warning::
|
||||
THE GD FORMAT IS NOT DESIGNED FOR DATA INTERCHANGE. This
|
||||
implementation is provided for convenience and demonstrational
|
||||
purposes only.
|
||||
"""
|
||||
from __future__ import annotations
|
||||
|
||||
from typing import IO
|
||||
|
||||
from . import ImageFile, ImagePalette, UnidentifiedImageError
|
||||
from ._binary import i16be as i16
|
||||
from ._binary import i32be as i32
|
||||
from ._typing import StrOrBytesPath
|
||||
|
||||
|
||||
class GdImageFile(ImageFile.ImageFile):
|
||||
"""
|
||||
Image plugin for the GD uncompressed format. Note that this format
|
||||
is not supported by the standard :py:func:`PIL.Image.open()` function. To use
|
||||
this plugin, you have to import the :py:mod:`PIL.GdImageFile` module and
|
||||
use the :py:func:`PIL.GdImageFile.open()` function.
|
||||
"""
|
||||
|
||||
format = "GD"
|
||||
format_description = "GD uncompressed images"
|
||||
|
||||
def _open(self) -> None:
|
||||
# Header
|
||||
assert self.fp is not None
|
||||
|
||||
s = self.fp.read(1037)
|
||||
|
||||
if i16(s) not in [65534, 65535]:
|
||||
msg = "Not a valid GD 2.x .gd file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self._mode = "P"
|
||||
self._size = i16(s, 2), i16(s, 4)
|
||||
|
||||
true_color = s[6]
|
||||
true_color_offset = 2 if true_color else 0
|
||||
|
||||
# transparency index
|
||||
tindex = i32(s, 7 + true_color_offset)
|
||||
if tindex < 256:
|
||||
self.info["transparency"] = tindex
|
||||
|
||||
self.palette = ImagePalette.raw(
|
||||
"RGBX", s[7 + true_color_offset + 6 : 7 + true_color_offset + 6 + 256 * 4]
|
||||
)
|
||||
|
||||
self.tile = [
|
||||
ImageFile._Tile(
|
||||
"raw",
|
||||
(0, 0) + self.size,
|
||||
7 + true_color_offset + 6 + 256 * 4,
|
||||
"L",
|
||||
)
|
||||
]
|
||||
|
||||
|
||||
def open(fp: StrOrBytesPath | IO[bytes], mode: str = "r") -> GdImageFile:
|
||||
"""
|
||||
Load texture from a GD image file.
|
||||
|
||||
:param fp: GD file name, or an opened file handle.
|
||||
:param mode: Optional mode. In this version, if the mode argument
|
||||
is given, it must be "r".
|
||||
:returns: An image instance.
|
||||
:raises OSError: If the image could not be read.
|
||||
"""
|
||||
if mode != "r":
|
||||
msg = "bad mode"
|
||||
raise ValueError(msg)
|
||||
|
||||
try:
|
||||
return GdImageFile(fp)
|
||||
except SyntaxError as e:
|
||||
msg = "cannot identify this image file"
|
||||
raise UnidentifiedImageError(msg) from e
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,153 @@
|
||||
#
|
||||
# Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# stuff to read (and render) GIMP gradient files
|
||||
#
|
||||
# History:
|
||||
# 97-08-23 fl Created
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1997.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
|
||||
"""
|
||||
Stuff to translate curve segments to palette values (derived from
|
||||
the corresponding code in GIMP, written by Federico Mena Quintero.
|
||||
See the GIMP distribution for more information.)
|
||||
"""
|
||||
from __future__ import annotations
|
||||
|
||||
from math import log, pi, sin, sqrt
|
||||
|
||||
from ._binary import o8
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from collections.abc import Callable
|
||||
from typing import IO
|
||||
|
||||
EPSILON = 1e-10
|
||||
"""""" # Enable auto-doc for data member
|
||||
|
||||
|
||||
def linear(middle: float, pos: float) -> float:
|
||||
if pos <= middle:
|
||||
if middle < EPSILON:
|
||||
return 0.0
|
||||
else:
|
||||
return 0.5 * pos / middle
|
||||
else:
|
||||
pos = pos - middle
|
||||
middle = 1.0 - middle
|
||||
if middle < EPSILON:
|
||||
return 1.0
|
||||
else:
|
||||
return 0.5 + 0.5 * pos / middle
|
||||
|
||||
|
||||
def curved(middle: float, pos: float) -> float:
|
||||
return pos ** (log(0.5) / log(max(middle, EPSILON)))
|
||||
|
||||
|
||||
def sine(middle: float, pos: float) -> float:
|
||||
return (sin((-pi / 2.0) + pi * linear(middle, pos)) + 1.0) / 2.0
|
||||
|
||||
|
||||
def sphere_increasing(middle: float, pos: float) -> float:
|
||||
return sqrt(1.0 - (linear(middle, pos) - 1.0) ** 2)
|
||||
|
||||
|
||||
def sphere_decreasing(middle: float, pos: float) -> float:
|
||||
return 1.0 - sqrt(1.0 - linear(middle, pos) ** 2)
|
||||
|
||||
|
||||
SEGMENTS = [linear, curved, sine, sphere_increasing, sphere_decreasing]
|
||||
"""""" # Enable auto-doc for data member
|
||||
|
||||
|
||||
class GradientFile:
|
||||
gradient: (
|
||||
list[
|
||||
tuple[
|
||||
float,
|
||||
float,
|
||||
float,
|
||||
list[float],
|
||||
list[float],
|
||||
Callable[[float, float], float],
|
||||
]
|
||||
]
|
||||
| None
|
||||
) = None
|
||||
|
||||
def getpalette(self, entries: int = 256) -> tuple[bytes, str]:
|
||||
assert self.gradient is not None
|
||||
palette = []
|
||||
|
||||
ix = 0
|
||||
x0, x1, xm, rgb0, rgb1, segment = self.gradient[ix]
|
||||
|
||||
for i in range(entries):
|
||||
x = i / (entries - 1)
|
||||
|
||||
while x1 < x:
|
||||
ix += 1
|
||||
x0, x1, xm, rgb0, rgb1, segment = self.gradient[ix]
|
||||
|
||||
w = x1 - x0
|
||||
|
||||
if w < EPSILON:
|
||||
scale = segment(0.5, 0.5)
|
||||
else:
|
||||
scale = segment((xm - x0) / w, (x - x0) / w)
|
||||
|
||||
# expand to RGBA
|
||||
r = o8(int(255 * ((rgb1[0] - rgb0[0]) * scale + rgb0[0]) + 0.5))
|
||||
g = o8(int(255 * ((rgb1[1] - rgb0[1]) * scale + rgb0[1]) + 0.5))
|
||||
b = o8(int(255 * ((rgb1[2] - rgb0[2]) * scale + rgb0[2]) + 0.5))
|
||||
a = o8(int(255 * ((rgb1[3] - rgb0[3]) * scale + rgb0[3]) + 0.5))
|
||||
|
||||
# add to palette
|
||||
palette.append(r + g + b + a)
|
||||
|
||||
return b"".join(palette), "RGBA"
|
||||
|
||||
|
||||
class GimpGradientFile(GradientFile):
|
||||
"""File handler for GIMP's gradient format."""
|
||||
|
||||
def __init__(self, fp: IO[bytes]) -> None:
|
||||
if not fp.readline().startswith(b"GIMP Gradient"):
|
||||
msg = "not a GIMP gradient file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
line = fp.readline()
|
||||
|
||||
# GIMP 1.2 gradient files don't contain a name, but GIMP 1.3 files do
|
||||
if line.startswith(b"Name: "):
|
||||
line = fp.readline().strip()
|
||||
|
||||
count = int(line)
|
||||
|
||||
self.gradient = []
|
||||
|
||||
for i in range(count):
|
||||
s = fp.readline().split()
|
||||
w = [float(x) for x in s[:11]]
|
||||
|
||||
x0, x1 = w[0], w[2]
|
||||
xm = w[1]
|
||||
rgb0 = w[3:7]
|
||||
rgb1 = w[7:11]
|
||||
|
||||
segment = SEGMENTS[int(s[11])]
|
||||
cspace = int(s[12])
|
||||
|
||||
if cspace != 0:
|
||||
msg = "cannot handle HSV colour space"
|
||||
raise OSError(msg)
|
||||
|
||||
self.gradient.append((x0, x1, xm, rgb0, rgb1, segment))
|
||||
@ -0,0 +1,75 @@
|
||||
#
|
||||
# Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# stuff to read GIMP palette files
|
||||
#
|
||||
# History:
|
||||
# 1997-08-23 fl Created
|
||||
# 2004-09-07 fl Support GIMP 2.0 palette files.
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997-2004. All rights reserved.
|
||||
# Copyright (c) Fredrik Lundh 1997-2004.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import re
|
||||
from io import BytesIO
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from typing import IO
|
||||
|
||||
|
||||
class GimpPaletteFile:
|
||||
"""File handler for GIMP's palette format."""
|
||||
|
||||
rawmode = "RGB"
|
||||
|
||||
def _read(self, fp: IO[bytes], limit: bool = True) -> None:
|
||||
if not fp.readline().startswith(b"GIMP Palette"):
|
||||
msg = "not a GIMP palette file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
palette: list[int] = []
|
||||
i = 0
|
||||
while True:
|
||||
if limit and i == 256 + 3:
|
||||
break
|
||||
|
||||
i += 1
|
||||
s = fp.readline()
|
||||
if not s:
|
||||
break
|
||||
|
||||
# skip fields and comment lines
|
||||
if re.match(rb"\w+:|#", s):
|
||||
continue
|
||||
if limit and len(s) > 100:
|
||||
msg = "bad palette file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
v = s.split(maxsplit=3)
|
||||
if len(v) < 3:
|
||||
msg = "bad palette entry"
|
||||
raise ValueError(msg)
|
||||
|
||||
palette += (int(v[i]) for i in range(3))
|
||||
if limit and len(palette) == 768:
|
||||
break
|
||||
|
||||
self.palette = bytes(palette)
|
||||
|
||||
def __init__(self, fp: IO[bytes]) -> None:
|
||||
self._read(fp)
|
||||
|
||||
@classmethod
|
||||
def frombytes(cls, data: bytes) -> GimpPaletteFile:
|
||||
self = cls.__new__(cls)
|
||||
self._read(BytesIO(data), False)
|
||||
return self
|
||||
|
||||
def getpalette(self) -> tuple[bytes, str]:
|
||||
return self.palette, self.rawmode
|
||||
@ -0,0 +1,75 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# GRIB stub adapter
|
||||
#
|
||||
# Copyright (c) 1996-2003 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
from typing import IO
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
_handler = None
|
||||
|
||||
|
||||
def register_handler(handler: ImageFile.StubHandler | None) -> None:
|
||||
"""
|
||||
Install application-specific GRIB image handler.
|
||||
|
||||
:param handler: Handler object.
|
||||
"""
|
||||
global _handler
|
||||
_handler = handler
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Image adapter
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return len(prefix) >= 8 and prefix.startswith(b"GRIB") and prefix[7] == 1
|
||||
|
||||
|
||||
class GribStubImageFile(ImageFile.StubImageFile):
|
||||
format = "GRIB"
|
||||
format_description = "GRIB"
|
||||
|
||||
def _open(self) -> None:
|
||||
if not _accept(self.fp.read(8)):
|
||||
msg = "Not a GRIB file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self.fp.seek(-8, os.SEEK_CUR)
|
||||
|
||||
# make something up
|
||||
self._mode = "F"
|
||||
self._size = 1, 1
|
||||
|
||||
loader = self._load()
|
||||
if loader:
|
||||
loader.open(self)
|
||||
|
||||
def _load(self) -> ImageFile.StubHandler | None:
|
||||
return _handler
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
if _handler is None or not hasattr(_handler, "save"):
|
||||
msg = "GRIB save handler not installed"
|
||||
raise OSError(msg)
|
||||
_handler.save(im, fp, filename)
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Registry
|
||||
|
||||
Image.register_open(GribStubImageFile.format, GribStubImageFile, _accept)
|
||||
Image.register_save(GribStubImageFile.format, _save)
|
||||
|
||||
Image.register_extension(GribStubImageFile.format, ".grib")
|
||||
@ -0,0 +1,75 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# HDF5 stub adapter
|
||||
#
|
||||
# Copyright (c) 2000-2003 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
from typing import IO
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
_handler = None
|
||||
|
||||
|
||||
def register_handler(handler: ImageFile.StubHandler | None) -> None:
|
||||
"""
|
||||
Install application-specific HDF5 image handler.
|
||||
|
||||
:param handler: Handler object.
|
||||
"""
|
||||
global _handler
|
||||
_handler = handler
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Image adapter
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(b"\x89HDF\r\n\x1a\n")
|
||||
|
||||
|
||||
class HDF5StubImageFile(ImageFile.StubImageFile):
|
||||
format = "HDF5"
|
||||
format_description = "HDF5"
|
||||
|
||||
def _open(self) -> None:
|
||||
if not _accept(self.fp.read(8)):
|
||||
msg = "Not an HDF file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self.fp.seek(-8, os.SEEK_CUR)
|
||||
|
||||
# make something up
|
||||
self._mode = "F"
|
||||
self._size = 1, 1
|
||||
|
||||
loader = self._load()
|
||||
if loader:
|
||||
loader.open(self)
|
||||
|
||||
def _load(self) -> ImageFile.StubHandler | None:
|
||||
return _handler
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
if _handler is None or not hasattr(_handler, "save"):
|
||||
msg = "HDF5 save handler not installed"
|
||||
raise OSError(msg)
|
||||
_handler.save(im, fp, filename)
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Registry
|
||||
|
||||
Image.register_open(HDF5StubImageFile.format, HDF5StubImageFile, _accept)
|
||||
Image.register_save(HDF5StubImageFile.format, _save)
|
||||
|
||||
Image.register_extensions(HDF5StubImageFile.format, [".h5", ".hdf"])
|
||||
@ -0,0 +1,401 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# macOS icns file decoder, based on icns.py by Bob Ippolito.
|
||||
#
|
||||
# history:
|
||||
# 2004-10-09 fl Turned into a PIL plugin; removed 2.3 dependencies.
|
||||
# 2020-04-04 Allow saving on all operating systems.
|
||||
#
|
||||
# Copyright (c) 2004 by Bob Ippolito.
|
||||
# Copyright (c) 2004 by Secret Labs.
|
||||
# Copyright (c) 2004 by Fredrik Lundh.
|
||||
# Copyright (c) 2014 by Alastair Houghton.
|
||||
# Copyright (c) 2020 by Pan Jing.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import io
|
||||
import os
|
||||
import struct
|
||||
import sys
|
||||
from typing import IO
|
||||
|
||||
from . import Image, ImageFile, PngImagePlugin, features
|
||||
|
||||
enable_jpeg2k = features.check_codec("jpg_2000")
|
||||
if enable_jpeg2k:
|
||||
from . import Jpeg2KImagePlugin
|
||||
|
||||
MAGIC = b"icns"
|
||||
HEADERSIZE = 8
|
||||
|
||||
|
||||
def nextheader(fobj: IO[bytes]) -> tuple[bytes, int]:
|
||||
return struct.unpack(">4sI", fobj.read(HEADERSIZE))
|
||||
|
||||
|
||||
def read_32t(
|
||||
fobj: IO[bytes], start_length: tuple[int, int], size: tuple[int, int, int]
|
||||
) -> dict[str, Image.Image]:
|
||||
# The 128x128 icon seems to have an extra header for some reason.
|
||||
(start, length) = start_length
|
||||
fobj.seek(start)
|
||||
sig = fobj.read(4)
|
||||
if sig != b"\x00\x00\x00\x00":
|
||||
msg = "Unknown signature, expecting 0x00000000"
|
||||
raise SyntaxError(msg)
|
||||
return read_32(fobj, (start + 4, length - 4), size)
|
||||
|
||||
|
||||
def read_32(
|
||||
fobj: IO[bytes], start_length: tuple[int, int], size: tuple[int, int, int]
|
||||
) -> dict[str, Image.Image]:
|
||||
"""
|
||||
Read a 32bit RGB icon resource. Seems to be either uncompressed or
|
||||
an RLE packbits-like scheme.
|
||||
"""
|
||||
(start, length) = start_length
|
||||
fobj.seek(start)
|
||||
pixel_size = (size[0] * size[2], size[1] * size[2])
|
||||
sizesq = pixel_size[0] * pixel_size[1]
|
||||
if length == sizesq * 3:
|
||||
# uncompressed ("RGBRGBGB")
|
||||
indata = fobj.read(length)
|
||||
im = Image.frombuffer("RGB", pixel_size, indata, "raw", "RGB", 0, 1)
|
||||
else:
|
||||
# decode image
|
||||
im = Image.new("RGB", pixel_size, None)
|
||||
for band_ix in range(3):
|
||||
data = []
|
||||
bytesleft = sizesq
|
||||
while bytesleft > 0:
|
||||
byte = fobj.read(1)
|
||||
if not byte:
|
||||
break
|
||||
byte_int = byte[0]
|
||||
if byte_int & 0x80:
|
||||
blocksize = byte_int - 125
|
||||
byte = fobj.read(1)
|
||||
for i in range(blocksize):
|
||||
data.append(byte)
|
||||
else:
|
||||
blocksize = byte_int + 1
|
||||
data.append(fobj.read(blocksize))
|
||||
bytesleft -= blocksize
|
||||
if bytesleft <= 0:
|
||||
break
|
||||
if bytesleft != 0:
|
||||
msg = f"Error reading channel [{repr(bytesleft)} left]"
|
||||
raise SyntaxError(msg)
|
||||
band = Image.frombuffer("L", pixel_size, b"".join(data), "raw", "L", 0, 1)
|
||||
im.im.putband(band.im, band_ix)
|
||||
return {"RGB": im}
|
||||
|
||||
|
||||
def read_mk(
|
||||
fobj: IO[bytes], start_length: tuple[int, int], size: tuple[int, int, int]
|
||||
) -> dict[str, Image.Image]:
|
||||
# Alpha masks seem to be uncompressed
|
||||
start = start_length[0]
|
||||
fobj.seek(start)
|
||||
pixel_size = (size[0] * size[2], size[1] * size[2])
|
||||
sizesq = pixel_size[0] * pixel_size[1]
|
||||
band = Image.frombuffer("L", pixel_size, fobj.read(sizesq), "raw", "L", 0, 1)
|
||||
return {"A": band}
|
||||
|
||||
|
||||
def read_png_or_jpeg2000(
|
||||
fobj: IO[bytes], start_length: tuple[int, int], size: tuple[int, int, int]
|
||||
) -> dict[str, Image.Image]:
|
||||
(start, length) = start_length
|
||||
fobj.seek(start)
|
||||
sig = fobj.read(12)
|
||||
|
||||
im: Image.Image
|
||||
if sig.startswith(b"\x89PNG\x0d\x0a\x1a\x0a"):
|
||||
fobj.seek(start)
|
||||
im = PngImagePlugin.PngImageFile(fobj)
|
||||
Image._decompression_bomb_check(im.size)
|
||||
return {"RGBA": im}
|
||||
elif (
|
||||
sig.startswith((b"\xff\x4f\xff\x51", b"\x0d\x0a\x87\x0a"))
|
||||
or sig == b"\x00\x00\x00\x0cjP \x0d\x0a\x87\x0a"
|
||||
):
|
||||
if not enable_jpeg2k:
|
||||
msg = (
|
||||
"Unsupported icon subimage format (rebuild PIL "
|
||||
"with JPEG 2000 support to fix this)"
|
||||
)
|
||||
raise ValueError(msg)
|
||||
# j2k, jpc or j2c
|
||||
fobj.seek(start)
|
||||
jp2kstream = fobj.read(length)
|
||||
f = io.BytesIO(jp2kstream)
|
||||
im = Jpeg2KImagePlugin.Jpeg2KImageFile(f)
|
||||
Image._decompression_bomb_check(im.size)
|
||||
if im.mode != "RGBA":
|
||||
im = im.convert("RGBA")
|
||||
return {"RGBA": im}
|
||||
else:
|
||||
msg = "Unsupported icon subimage format"
|
||||
raise ValueError(msg)
|
||||
|
||||
|
||||
class IcnsFile:
|
||||
SIZES = {
|
||||
(512, 512, 2): [(b"ic10", read_png_or_jpeg2000)],
|
||||
(512, 512, 1): [(b"ic09", read_png_or_jpeg2000)],
|
||||
(256, 256, 2): [(b"ic14", read_png_or_jpeg2000)],
|
||||
(256, 256, 1): [(b"ic08", read_png_or_jpeg2000)],
|
||||
(128, 128, 2): [(b"ic13", read_png_or_jpeg2000)],
|
||||
(128, 128, 1): [
|
||||
(b"ic07", read_png_or_jpeg2000),
|
||||
(b"it32", read_32t),
|
||||
(b"t8mk", read_mk),
|
||||
],
|
||||
(64, 64, 1): [(b"icp6", read_png_or_jpeg2000)],
|
||||
(32, 32, 2): [(b"ic12", read_png_or_jpeg2000)],
|
||||
(48, 48, 1): [(b"ih32", read_32), (b"h8mk", read_mk)],
|
||||
(32, 32, 1): [
|
||||
(b"icp5", read_png_or_jpeg2000),
|
||||
(b"il32", read_32),
|
||||
(b"l8mk", read_mk),
|
||||
],
|
||||
(16, 16, 2): [(b"ic11", read_png_or_jpeg2000)],
|
||||
(16, 16, 1): [
|
||||
(b"icp4", read_png_or_jpeg2000),
|
||||
(b"is32", read_32),
|
||||
(b"s8mk", read_mk),
|
||||
],
|
||||
}
|
||||
|
||||
def __init__(self, fobj: IO[bytes]) -> None:
|
||||
"""
|
||||
fobj is a file-like object as an icns resource
|
||||
"""
|
||||
# signature : (start, length)
|
||||
self.dct = {}
|
||||
self.fobj = fobj
|
||||
sig, filesize = nextheader(fobj)
|
||||
if not _accept(sig):
|
||||
msg = "not an icns file"
|
||||
raise SyntaxError(msg)
|
||||
i = HEADERSIZE
|
||||
while i < filesize:
|
||||
sig, blocksize = nextheader(fobj)
|
||||
if blocksize <= 0:
|
||||
msg = "invalid block header"
|
||||
raise SyntaxError(msg)
|
||||
i += HEADERSIZE
|
||||
blocksize -= HEADERSIZE
|
||||
self.dct[sig] = (i, blocksize)
|
||||
fobj.seek(blocksize, io.SEEK_CUR)
|
||||
i += blocksize
|
||||
|
||||
def itersizes(self) -> list[tuple[int, int, int]]:
|
||||
sizes = []
|
||||
for size, fmts in self.SIZES.items():
|
||||
for fmt, reader in fmts:
|
||||
if fmt in self.dct:
|
||||
sizes.append(size)
|
||||
break
|
||||
return sizes
|
||||
|
||||
def bestsize(self) -> tuple[int, int, int]:
|
||||
sizes = self.itersizes()
|
||||
if not sizes:
|
||||
msg = "No 32bit icon resources found"
|
||||
raise SyntaxError(msg)
|
||||
return max(sizes)
|
||||
|
||||
def dataforsize(self, size: tuple[int, int, int]) -> dict[str, Image.Image]:
|
||||
"""
|
||||
Get an icon resource as {channel: array}. Note that
|
||||
the arrays are bottom-up like windows bitmaps and will likely
|
||||
need to be flipped or transposed in some way.
|
||||
"""
|
||||
dct = {}
|
||||
for code, reader in self.SIZES[size]:
|
||||
desc = self.dct.get(code)
|
||||
if desc is not None:
|
||||
dct.update(reader(self.fobj, desc, size))
|
||||
return dct
|
||||
|
||||
def getimage(
|
||||
self, size: tuple[int, int] | tuple[int, int, int] | None = None
|
||||
) -> Image.Image:
|
||||
if size is None:
|
||||
size = self.bestsize()
|
||||
elif len(size) == 2:
|
||||
size = (size[0], size[1], 1)
|
||||
channels = self.dataforsize(size)
|
||||
|
||||
im = channels.get("RGBA")
|
||||
if im:
|
||||
return im
|
||||
|
||||
im = channels["RGB"].copy()
|
||||
try:
|
||||
im.putalpha(channels["A"])
|
||||
except KeyError:
|
||||
pass
|
||||
return im
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for Mac OS icons.
|
||||
|
||||
|
||||
class IcnsImageFile(ImageFile.ImageFile):
|
||||
"""
|
||||
PIL image support for Mac OS .icns files.
|
||||
Chooses the best resolution, but will possibly load
|
||||
a different size image if you mutate the size attribute
|
||||
before calling 'load'.
|
||||
|
||||
The info dictionary has a key 'sizes' that is a list
|
||||
of sizes that the icns file has.
|
||||
"""
|
||||
|
||||
format = "ICNS"
|
||||
format_description = "Mac OS icns resource"
|
||||
|
||||
def _open(self) -> None:
|
||||
self.icns = IcnsFile(self.fp)
|
||||
self._mode = "RGBA"
|
||||
self.info["sizes"] = self.icns.itersizes()
|
||||
self.best_size = self.icns.bestsize()
|
||||
self.size = (
|
||||
self.best_size[0] * self.best_size[2],
|
||||
self.best_size[1] * self.best_size[2],
|
||||
)
|
||||
|
||||
@property
|
||||
def size(self) -> tuple[int, int]:
|
||||
return self._size
|
||||
|
||||
@size.setter
|
||||
def size(self, value: tuple[int, int]) -> None:
|
||||
# Check that a matching size exists,
|
||||
# or that there is a scale that would create a size that matches
|
||||
for size in self.info["sizes"]:
|
||||
simple_size = size[0] * size[2], size[1] * size[2]
|
||||
scale = simple_size[0] // value[0]
|
||||
if simple_size[1] / value[1] == scale:
|
||||
self._size = value
|
||||
return
|
||||
msg = "This is not one of the allowed sizes of this image"
|
||||
raise ValueError(msg)
|
||||
|
||||
def load(self, scale: int | None = None) -> Image.core.PixelAccess | None:
|
||||
if scale is not None:
|
||||
width, height = self.size[:2]
|
||||
self.size = width * scale, height * scale
|
||||
self.best_size = width, height, scale
|
||||
|
||||
px = Image.Image.load(self)
|
||||
if self._im is not None and self.im.size == self.size:
|
||||
# Already loaded
|
||||
return px
|
||||
self.load_prepare()
|
||||
# This is likely NOT the best way to do it, but whatever.
|
||||
im = self.icns.getimage(self.best_size)
|
||||
|
||||
# If this is a PNG or JPEG 2000, it won't be loaded yet
|
||||
px = im.load()
|
||||
|
||||
self.im = im.im
|
||||
self._mode = im.mode
|
||||
self.size = im.size
|
||||
|
||||
return px
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
"""
|
||||
Saves the image as a series of PNG files,
|
||||
that are then combined into a .icns file.
|
||||
"""
|
||||
if hasattr(fp, "flush"):
|
||||
fp.flush()
|
||||
|
||||
sizes = {
|
||||
b"ic07": 128,
|
||||
b"ic08": 256,
|
||||
b"ic09": 512,
|
||||
b"ic10": 1024,
|
||||
b"ic11": 32,
|
||||
b"ic12": 64,
|
||||
b"ic13": 256,
|
||||
b"ic14": 512,
|
||||
}
|
||||
provided_images = {im.width: im for im in im.encoderinfo.get("append_images", [])}
|
||||
size_streams = {}
|
||||
for size in set(sizes.values()):
|
||||
image = (
|
||||
provided_images[size]
|
||||
if size in provided_images
|
||||
else im.resize((size, size))
|
||||
)
|
||||
|
||||
temp = io.BytesIO()
|
||||
image.save(temp, "png")
|
||||
size_streams[size] = temp.getvalue()
|
||||
|
||||
entries = []
|
||||
for type, size in sizes.items():
|
||||
stream = size_streams[size]
|
||||
entries.append((type, HEADERSIZE + len(stream), stream))
|
||||
|
||||
# Header
|
||||
fp.write(MAGIC)
|
||||
file_length = HEADERSIZE # Header
|
||||
file_length += HEADERSIZE + 8 * len(entries) # TOC
|
||||
file_length += sum(entry[1] for entry in entries)
|
||||
fp.write(struct.pack(">i", file_length))
|
||||
|
||||
# TOC
|
||||
fp.write(b"TOC ")
|
||||
fp.write(struct.pack(">i", HEADERSIZE + len(entries) * HEADERSIZE))
|
||||
for entry in entries:
|
||||
fp.write(entry[0])
|
||||
fp.write(struct.pack(">i", entry[1]))
|
||||
|
||||
# Data
|
||||
for entry in entries:
|
||||
fp.write(entry[0])
|
||||
fp.write(struct.pack(">i", entry[1]))
|
||||
fp.write(entry[2])
|
||||
|
||||
if hasattr(fp, "flush"):
|
||||
fp.flush()
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(MAGIC)
|
||||
|
||||
|
||||
Image.register_open(IcnsImageFile.format, IcnsImageFile, _accept)
|
||||
Image.register_extension(IcnsImageFile.format, ".icns")
|
||||
|
||||
Image.register_save(IcnsImageFile.format, _save)
|
||||
Image.register_mime(IcnsImageFile.format, "image/icns")
|
||||
|
||||
if __name__ == "__main__":
|
||||
if len(sys.argv) < 2:
|
||||
print("Syntax: python3 IcnsImagePlugin.py [file]")
|
||||
sys.exit()
|
||||
|
||||
with open(sys.argv[1], "rb") as fp:
|
||||
imf = IcnsImageFile(fp)
|
||||
for size in imf.info["sizes"]:
|
||||
width, height, scale = imf.size = size
|
||||
imf.save(f"out-{width}-{height}-{scale}.png")
|
||||
with Image.open(sys.argv[1]) as im:
|
||||
im.save("out.png")
|
||||
if sys.platform == "windows":
|
||||
os.startfile("out.png")
|
||||
@ -0,0 +1,381 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# Windows Icon support for PIL
|
||||
#
|
||||
# History:
|
||||
# 96-05-27 fl Created
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1996.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
|
||||
# This plugin is a refactored version of Win32IconImagePlugin by Bryan Davis
|
||||
# <casadebender@gmail.com>.
|
||||
# https://code.google.com/archive/p/casadebender/wikis/Win32IconImagePlugin.wiki
|
||||
#
|
||||
# Icon format references:
|
||||
# * https://en.wikipedia.org/wiki/ICO_(file_format)
|
||||
# * https://msdn.microsoft.com/en-us/library/ms997538.aspx
|
||||
from __future__ import annotations
|
||||
|
||||
import warnings
|
||||
from io import BytesIO
|
||||
from math import ceil, log
|
||||
from typing import IO, NamedTuple
|
||||
|
||||
from . import BmpImagePlugin, Image, ImageFile, PngImagePlugin
|
||||
from ._binary import i16le as i16
|
||||
from ._binary import i32le as i32
|
||||
from ._binary import o8
|
||||
from ._binary import o16le as o16
|
||||
from ._binary import o32le as o32
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
_MAGIC = b"\0\0\1\0"
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
fp.write(_MAGIC) # (2+2)
|
||||
bmp = im.encoderinfo.get("bitmap_format") == "bmp"
|
||||
sizes = im.encoderinfo.get(
|
||||
"sizes",
|
||||
[(16, 16), (24, 24), (32, 32), (48, 48), (64, 64), (128, 128), (256, 256)],
|
||||
)
|
||||
frames = []
|
||||
provided_ims = [im] + im.encoderinfo.get("append_images", [])
|
||||
width, height = im.size
|
||||
for size in sorted(set(sizes)):
|
||||
if size[0] > width or size[1] > height or size[0] > 256 or size[1] > 256:
|
||||
continue
|
||||
|
||||
for provided_im in provided_ims:
|
||||
if provided_im.size != size:
|
||||
continue
|
||||
frames.append(provided_im)
|
||||
if bmp:
|
||||
bits = BmpImagePlugin.SAVE[provided_im.mode][1]
|
||||
bits_used = [bits]
|
||||
for other_im in provided_ims:
|
||||
if other_im.size != size:
|
||||
continue
|
||||
bits = BmpImagePlugin.SAVE[other_im.mode][1]
|
||||
if bits not in bits_used:
|
||||
# Another image has been supplied for this size
|
||||
# with a different bit depth
|
||||
frames.append(other_im)
|
||||
bits_used.append(bits)
|
||||
break
|
||||
else:
|
||||
# TODO: invent a more convenient method for proportional scalings
|
||||
frame = provided_im.copy()
|
||||
frame.thumbnail(size, Image.Resampling.LANCZOS, reducing_gap=None)
|
||||
frames.append(frame)
|
||||
fp.write(o16(len(frames))) # idCount(2)
|
||||
offset = fp.tell() + len(frames) * 16
|
||||
for frame in frames:
|
||||
width, height = frame.size
|
||||
# 0 means 256
|
||||
fp.write(o8(width if width < 256 else 0)) # bWidth(1)
|
||||
fp.write(o8(height if height < 256 else 0)) # bHeight(1)
|
||||
|
||||
bits, colors = BmpImagePlugin.SAVE[frame.mode][1:] if bmp else (32, 0)
|
||||
fp.write(o8(colors)) # bColorCount(1)
|
||||
fp.write(b"\0") # bReserved(1)
|
||||
fp.write(b"\0\0") # wPlanes(2)
|
||||
fp.write(o16(bits)) # wBitCount(2)
|
||||
|
||||
image_io = BytesIO()
|
||||
if bmp:
|
||||
frame.save(image_io, "dib")
|
||||
|
||||
if bits != 32:
|
||||
and_mask = Image.new("1", size)
|
||||
ImageFile._save(
|
||||
and_mask,
|
||||
image_io,
|
||||
[ImageFile._Tile("raw", (0, 0) + size, 0, ("1", 0, -1))],
|
||||
)
|
||||
else:
|
||||
frame.save(image_io, "png")
|
||||
image_io.seek(0)
|
||||
image_bytes = image_io.read()
|
||||
if bmp:
|
||||
image_bytes = image_bytes[:8] + o32(height * 2) + image_bytes[12:]
|
||||
bytes_len = len(image_bytes)
|
||||
fp.write(o32(bytes_len)) # dwBytesInRes(4)
|
||||
fp.write(o32(offset)) # dwImageOffset(4)
|
||||
current = fp.tell()
|
||||
fp.seek(offset)
|
||||
fp.write(image_bytes)
|
||||
offset = offset + bytes_len
|
||||
fp.seek(current)
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(_MAGIC)
|
||||
|
||||
|
||||
class IconHeader(NamedTuple):
|
||||
width: int
|
||||
height: int
|
||||
nb_color: int
|
||||
reserved: int
|
||||
planes: int
|
||||
bpp: int
|
||||
size: int
|
||||
offset: int
|
||||
dim: tuple[int, int]
|
||||
square: int
|
||||
color_depth: int
|
||||
|
||||
|
||||
class IcoFile:
|
||||
def __init__(self, buf: IO[bytes]) -> None:
|
||||
"""
|
||||
Parse image from file-like object containing ico file data
|
||||
"""
|
||||
|
||||
# check magic
|
||||
s = buf.read(6)
|
||||
if not _accept(s):
|
||||
msg = "not an ICO file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self.buf = buf
|
||||
self.entry = []
|
||||
|
||||
# Number of items in file
|
||||
self.nb_items = i16(s, 4)
|
||||
|
||||
# Get headers for each item
|
||||
for i in range(self.nb_items):
|
||||
s = buf.read(16)
|
||||
|
||||
# See Wikipedia
|
||||
width = s[0] or 256
|
||||
height = s[1] or 256
|
||||
|
||||
# No. of colors in image (0 if >=8bpp)
|
||||
nb_color = s[2]
|
||||
bpp = i16(s, 6)
|
||||
icon_header = IconHeader(
|
||||
width=width,
|
||||
height=height,
|
||||
nb_color=nb_color,
|
||||
reserved=s[3],
|
||||
planes=i16(s, 4),
|
||||
bpp=i16(s, 6),
|
||||
size=i32(s, 8),
|
||||
offset=i32(s, 12),
|
||||
dim=(width, height),
|
||||
square=width * height,
|
||||
# See Wikipedia notes about color depth.
|
||||
# We need this just to differ images with equal sizes
|
||||
color_depth=bpp or (nb_color != 0 and ceil(log(nb_color, 2))) or 256,
|
||||
)
|
||||
|
||||
self.entry.append(icon_header)
|
||||
|
||||
self.entry = sorted(self.entry, key=lambda x: x.color_depth)
|
||||
# ICO images are usually squares
|
||||
self.entry = sorted(self.entry, key=lambda x: x.square, reverse=True)
|
||||
|
||||
def sizes(self) -> set[tuple[int, int]]:
|
||||
"""
|
||||
Get a set of all available icon sizes and color depths.
|
||||
"""
|
||||
return {(h.width, h.height) for h in self.entry}
|
||||
|
||||
def getentryindex(self, size: tuple[int, int], bpp: int | bool = False) -> int:
|
||||
for i, h in enumerate(self.entry):
|
||||
if size == h.dim and (bpp is False or bpp == h.color_depth):
|
||||
return i
|
||||
return 0
|
||||
|
||||
def getimage(self, size: tuple[int, int], bpp: int | bool = False) -> Image.Image:
|
||||
"""
|
||||
Get an image from the icon
|
||||
"""
|
||||
return self.frame(self.getentryindex(size, bpp))
|
||||
|
||||
def frame(self, idx: int) -> Image.Image:
|
||||
"""
|
||||
Get an image from frame idx
|
||||
"""
|
||||
|
||||
header = self.entry[idx]
|
||||
|
||||
self.buf.seek(header.offset)
|
||||
data = self.buf.read(8)
|
||||
self.buf.seek(header.offset)
|
||||
|
||||
im: Image.Image
|
||||
if data[:8] == PngImagePlugin._MAGIC:
|
||||
# png frame
|
||||
im = PngImagePlugin.PngImageFile(self.buf)
|
||||
Image._decompression_bomb_check(im.size)
|
||||
else:
|
||||
# XOR + AND mask bmp frame
|
||||
im = BmpImagePlugin.DibImageFile(self.buf)
|
||||
Image._decompression_bomb_check(im.size)
|
||||
|
||||
# change tile dimension to only encompass XOR image
|
||||
im._size = (im.size[0], int(im.size[1] / 2))
|
||||
d, e, o, a = im.tile[0]
|
||||
im.tile[0] = ImageFile._Tile(d, (0, 0) + im.size, o, a)
|
||||
|
||||
# figure out where AND mask image starts
|
||||
if header.bpp == 32:
|
||||
# 32-bit color depth icon image allows semitransparent areas
|
||||
# PIL's DIB format ignores transparency bits, recover them.
|
||||
# The DIB is packed in BGRX byte order where X is the alpha
|
||||
# channel.
|
||||
|
||||
# Back up to start of bmp data
|
||||
self.buf.seek(o)
|
||||
# extract every 4th byte (eg. 3,7,11,15,...)
|
||||
alpha_bytes = self.buf.read(im.size[0] * im.size[1] * 4)[3::4]
|
||||
|
||||
# convert to an 8bpp grayscale image
|
||||
try:
|
||||
mask = Image.frombuffer(
|
||||
"L", # 8bpp
|
||||
im.size, # (w, h)
|
||||
alpha_bytes, # source chars
|
||||
"raw", # raw decoder
|
||||
("L", 0, -1), # 8bpp inverted, unpadded, reversed
|
||||
)
|
||||
except ValueError:
|
||||
if ImageFile.LOAD_TRUNCATED_IMAGES:
|
||||
mask = None
|
||||
else:
|
||||
raise
|
||||
else:
|
||||
# get AND image from end of bitmap
|
||||
w = im.size[0]
|
||||
if (w % 32) > 0:
|
||||
# bitmap row data is aligned to word boundaries
|
||||
w += 32 - (im.size[0] % 32)
|
||||
|
||||
# the total mask data is
|
||||
# padded row size * height / bits per char
|
||||
|
||||
total_bytes = int((w * im.size[1]) / 8)
|
||||
and_mask_offset = header.offset + header.size - total_bytes
|
||||
|
||||
self.buf.seek(and_mask_offset)
|
||||
mask_data = self.buf.read(total_bytes)
|
||||
|
||||
# convert raw data to image
|
||||
try:
|
||||
mask = Image.frombuffer(
|
||||
"1", # 1 bpp
|
||||
im.size, # (w, h)
|
||||
mask_data, # source chars
|
||||
"raw", # raw decoder
|
||||
("1;I", int(w / 8), -1), # 1bpp inverted, padded, reversed
|
||||
)
|
||||
except ValueError:
|
||||
if ImageFile.LOAD_TRUNCATED_IMAGES:
|
||||
mask = None
|
||||
else:
|
||||
raise
|
||||
|
||||
# now we have two images, im is XOR image and mask is AND image
|
||||
|
||||
# apply mask image as alpha channel
|
||||
if mask:
|
||||
im = im.convert("RGBA")
|
||||
im.putalpha(mask)
|
||||
|
||||
return im
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for Windows Icon files.
|
||||
|
||||
|
||||
class IcoImageFile(ImageFile.ImageFile):
|
||||
"""
|
||||
PIL read-only image support for Microsoft Windows .ico files.
|
||||
|
||||
By default the largest resolution image in the file will be loaded. This
|
||||
can be changed by altering the 'size' attribute before calling 'load'.
|
||||
|
||||
The info dictionary has a key 'sizes' that is a list of the sizes available
|
||||
in the icon file.
|
||||
|
||||
Handles classic, XP and Vista icon formats.
|
||||
|
||||
When saving, PNG compression is used. Support for this was only added in
|
||||
Windows Vista. If you are unable to view the icon in Windows, convert the
|
||||
image to "RGBA" mode before saving.
|
||||
|
||||
This plugin is a refactored version of Win32IconImagePlugin by Bryan Davis
|
||||
<casadebender@gmail.com>.
|
||||
https://code.google.com/archive/p/casadebender/wikis/Win32IconImagePlugin.wiki
|
||||
"""
|
||||
|
||||
format = "ICO"
|
||||
format_description = "Windows Icon"
|
||||
|
||||
def _open(self) -> None:
|
||||
self.ico = IcoFile(self.fp)
|
||||
self.info["sizes"] = self.ico.sizes()
|
||||
self.size = self.ico.entry[0].dim
|
||||
self.load()
|
||||
|
||||
@property
|
||||
def size(self) -> tuple[int, int]:
|
||||
return self._size
|
||||
|
||||
@size.setter
|
||||
def size(self, value: tuple[int, int]) -> None:
|
||||
if value not in self.info["sizes"]:
|
||||
msg = "This is not one of the allowed sizes of this image"
|
||||
raise ValueError(msg)
|
||||
self._size = value
|
||||
|
||||
def load(self) -> Image.core.PixelAccess | None:
|
||||
if self._im is not None and self.im.size == self.size:
|
||||
# Already loaded
|
||||
return Image.Image.load(self)
|
||||
im = self.ico.getimage(self.size)
|
||||
# if tile is PNG, it won't really be loaded yet
|
||||
im.load()
|
||||
self.im = im.im
|
||||
self._mode = im.mode
|
||||
if im.palette:
|
||||
self.palette = im.palette
|
||||
if im.size != self.size:
|
||||
warnings.warn("Image was not the expected size")
|
||||
|
||||
index = self.ico.getentryindex(self.size)
|
||||
sizes = list(self.info["sizes"])
|
||||
sizes[index] = im.size
|
||||
self.info["sizes"] = set(sizes)
|
||||
|
||||
self.size = im.size
|
||||
return Image.Image.load(self)
|
||||
|
||||
def load_seek(self, pos: int) -> None:
|
||||
# Flag the ImageFile.Parser so that it
|
||||
# just does all the decode at the end.
|
||||
pass
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
Image.register_open(IcoImageFile.format, IcoImageFile, _accept)
|
||||
Image.register_save(IcoImageFile.format, _save)
|
||||
Image.register_extension(IcoImageFile.format, ".ico")
|
||||
|
||||
Image.register_mime(IcoImageFile.format, "image/x-icon")
|
||||
@ -0,0 +1,389 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# IFUNC IM file handling for PIL
|
||||
#
|
||||
# history:
|
||||
# 1995-09-01 fl Created.
|
||||
# 1997-01-03 fl Save palette images
|
||||
# 1997-01-08 fl Added sequence support
|
||||
# 1997-01-23 fl Added P and RGB save support
|
||||
# 1997-05-31 fl Read floating point images
|
||||
# 1997-06-22 fl Save floating point images
|
||||
# 1997-08-27 fl Read and save 1-bit images
|
||||
# 1998-06-25 fl Added support for RGB+LUT images
|
||||
# 1998-07-02 fl Added support for YCC images
|
||||
# 1998-07-15 fl Renamed offset attribute to avoid name clash
|
||||
# 1998-12-29 fl Added I;16 support
|
||||
# 2001-02-17 fl Use 're' instead of 'regex' (Python 2.1) (0.7)
|
||||
# 2003-09-26 fl Added LA/PA support
|
||||
#
|
||||
# Copyright (c) 1997-2003 by Secret Labs AB.
|
||||
# Copyright (c) 1995-2001 by Fredrik Lundh.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import os
|
||||
import re
|
||||
from typing import IO, Any
|
||||
|
||||
from . import Image, ImageFile, ImagePalette
|
||||
from ._util import DeferredError
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Standard tags
|
||||
|
||||
COMMENT = "Comment"
|
||||
DATE = "Date"
|
||||
EQUIPMENT = "Digitalization equipment"
|
||||
FRAMES = "File size (no of images)"
|
||||
LUT = "Lut"
|
||||
NAME = "Name"
|
||||
SCALE = "Scale (x,y)"
|
||||
SIZE = "Image size (x*y)"
|
||||
MODE = "Image type"
|
||||
|
||||
TAGS = {
|
||||
COMMENT: 0,
|
||||
DATE: 0,
|
||||
EQUIPMENT: 0,
|
||||
FRAMES: 0,
|
||||
LUT: 0,
|
||||
NAME: 0,
|
||||
SCALE: 0,
|
||||
SIZE: 0,
|
||||
MODE: 0,
|
||||
}
|
||||
|
||||
OPEN = {
|
||||
# ifunc93/p3cfunc formats
|
||||
"0 1 image": ("1", "1"),
|
||||
"L 1 image": ("1", "1"),
|
||||
"Greyscale image": ("L", "L"),
|
||||
"Grayscale image": ("L", "L"),
|
||||
"RGB image": ("RGB", "RGB;L"),
|
||||
"RLB image": ("RGB", "RLB"),
|
||||
"RYB image": ("RGB", "RLB"),
|
||||
"B1 image": ("1", "1"),
|
||||
"B2 image": ("P", "P;2"),
|
||||
"B4 image": ("P", "P;4"),
|
||||
"X 24 image": ("RGB", "RGB"),
|
||||
"L 32 S image": ("I", "I;32"),
|
||||
"L 32 F image": ("F", "F;32"),
|
||||
# old p3cfunc formats
|
||||
"RGB3 image": ("RGB", "RGB;T"),
|
||||
"RYB3 image": ("RGB", "RYB;T"),
|
||||
# extensions
|
||||
"LA image": ("LA", "LA;L"),
|
||||
"PA image": ("LA", "PA;L"),
|
||||
"RGBA image": ("RGBA", "RGBA;L"),
|
||||
"RGBX image": ("RGB", "RGBX;L"),
|
||||
"CMYK image": ("CMYK", "CMYK;L"),
|
||||
"YCC image": ("YCbCr", "YCbCr;L"),
|
||||
}
|
||||
|
||||
# ifunc95 extensions
|
||||
for i in ["8", "8S", "16", "16S", "32", "32F"]:
|
||||
OPEN[f"L {i} image"] = ("F", f"F;{i}")
|
||||
OPEN[f"L*{i} image"] = ("F", f"F;{i}")
|
||||
for i in ["16", "16L", "16B"]:
|
||||
OPEN[f"L {i} image"] = (f"I;{i}", f"I;{i}")
|
||||
OPEN[f"L*{i} image"] = (f"I;{i}", f"I;{i}")
|
||||
for i in ["32S"]:
|
||||
OPEN[f"L {i} image"] = ("I", f"I;{i}")
|
||||
OPEN[f"L*{i} image"] = ("I", f"I;{i}")
|
||||
for j in range(2, 33):
|
||||
OPEN[f"L*{j} image"] = ("F", f"F;{j}")
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Read IM directory
|
||||
|
||||
split = re.compile(rb"^([A-Za-z][^:]*):[ \t]*(.*)[ \t]*$")
|
||||
|
||||
|
||||
def number(s: Any) -> float:
|
||||
try:
|
||||
return int(s)
|
||||
except ValueError:
|
||||
return float(s)
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for the IFUNC IM file format.
|
||||
|
||||
|
||||
class ImImageFile(ImageFile.ImageFile):
|
||||
format = "IM"
|
||||
format_description = "IFUNC Image Memory"
|
||||
_close_exclusive_fp_after_loading = False
|
||||
|
||||
def _open(self) -> None:
|
||||
# Quick rejection: if there's not an LF among the first
|
||||
# 100 bytes, this is (probably) not a text header.
|
||||
|
||||
if b"\n" not in self.fp.read(100):
|
||||
msg = "not an IM file"
|
||||
raise SyntaxError(msg)
|
||||
self.fp.seek(0)
|
||||
|
||||
n = 0
|
||||
|
||||
# Default values
|
||||
self.info[MODE] = "L"
|
||||
self.info[SIZE] = (512, 512)
|
||||
self.info[FRAMES] = 1
|
||||
|
||||
self.rawmode = "L"
|
||||
|
||||
while True:
|
||||
s = self.fp.read(1)
|
||||
|
||||
# Some versions of IFUNC uses \n\r instead of \r\n...
|
||||
if s == b"\r":
|
||||
continue
|
||||
|
||||
if not s or s == b"\0" or s == b"\x1a":
|
||||
break
|
||||
|
||||
# FIXME: this may read whole file if not a text file
|
||||
s = s + self.fp.readline()
|
||||
|
||||
if len(s) > 100:
|
||||
msg = "not an IM file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
if s.endswith(b"\r\n"):
|
||||
s = s[:-2]
|
||||
elif s.endswith(b"\n"):
|
||||
s = s[:-1]
|
||||
|
||||
try:
|
||||
m = split.match(s)
|
||||
except re.error as e:
|
||||
msg = "not an IM file"
|
||||
raise SyntaxError(msg) from e
|
||||
|
||||
if m:
|
||||
k, v = m.group(1, 2)
|
||||
|
||||
# Don't know if this is the correct encoding,
|
||||
# but a decent guess (I guess)
|
||||
k = k.decode("latin-1", "replace")
|
||||
v = v.decode("latin-1", "replace")
|
||||
|
||||
# Convert value as appropriate
|
||||
if k in [FRAMES, SCALE, SIZE]:
|
||||
v = v.replace("*", ",")
|
||||
v = tuple(map(number, v.split(",")))
|
||||
if len(v) == 1:
|
||||
v = v[0]
|
||||
elif k == MODE and v in OPEN:
|
||||
v, self.rawmode = OPEN[v]
|
||||
|
||||
# Add to dictionary. Note that COMMENT tags are
|
||||
# combined into a list of strings.
|
||||
if k == COMMENT:
|
||||
if k in self.info:
|
||||
self.info[k].append(v)
|
||||
else:
|
||||
self.info[k] = [v]
|
||||
else:
|
||||
self.info[k] = v
|
||||
|
||||
if k in TAGS:
|
||||
n += 1
|
||||
|
||||
else:
|
||||
msg = f"Syntax error in IM header: {s.decode('ascii', 'replace')}"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
if not n:
|
||||
msg = "Not an IM file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
# Basic attributes
|
||||
self._size = self.info[SIZE]
|
||||
self._mode = self.info[MODE]
|
||||
|
||||
# Skip forward to start of image data
|
||||
while s and not s.startswith(b"\x1a"):
|
||||
s = self.fp.read(1)
|
||||
if not s:
|
||||
msg = "File truncated"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
if LUT in self.info:
|
||||
# convert lookup table to palette or lut attribute
|
||||
palette = self.fp.read(768)
|
||||
greyscale = 1 # greyscale palette
|
||||
linear = 1 # linear greyscale palette
|
||||
for i in range(256):
|
||||
if palette[i] == palette[i + 256] == palette[i + 512]:
|
||||
if palette[i] != i:
|
||||
linear = 0
|
||||
else:
|
||||
greyscale = 0
|
||||
if self.mode in ["L", "LA", "P", "PA"]:
|
||||
if greyscale:
|
||||
if not linear:
|
||||
self.lut = list(palette[:256])
|
||||
else:
|
||||
if self.mode in ["L", "P"]:
|
||||
self._mode = self.rawmode = "P"
|
||||
elif self.mode in ["LA", "PA"]:
|
||||
self._mode = "PA"
|
||||
self.rawmode = "PA;L"
|
||||
self.palette = ImagePalette.raw("RGB;L", palette)
|
||||
elif self.mode == "RGB":
|
||||
if not greyscale or not linear:
|
||||
self.lut = list(palette)
|
||||
|
||||
self.frame = 0
|
||||
|
||||
self.__offset = offs = self.fp.tell()
|
||||
|
||||
self._fp = self.fp # FIXME: hack
|
||||
|
||||
if self.rawmode.startswith("F;"):
|
||||
# ifunc95 formats
|
||||
try:
|
||||
# use bit decoder (if necessary)
|
||||
bits = int(self.rawmode[2:])
|
||||
if bits not in [8, 16, 32]:
|
||||
self.tile = [
|
||||
ImageFile._Tile(
|
||||
"bit", (0, 0) + self.size, offs, (bits, 8, 3, 0, -1)
|
||||
)
|
||||
]
|
||||
return
|
||||
except ValueError:
|
||||
pass
|
||||
|
||||
if self.rawmode in ["RGB;T", "RYB;T"]:
|
||||
# Old LabEye/3PC files. Would be very surprised if anyone
|
||||
# ever stumbled upon such a file ;-)
|
||||
size = self.size[0] * self.size[1]
|
||||
self.tile = [
|
||||
ImageFile._Tile("raw", (0, 0) + self.size, offs, ("G", 0, -1)),
|
||||
ImageFile._Tile("raw", (0, 0) + self.size, offs + size, ("R", 0, -1)),
|
||||
ImageFile._Tile(
|
||||
"raw", (0, 0) + self.size, offs + 2 * size, ("B", 0, -1)
|
||||
),
|
||||
]
|
||||
else:
|
||||
# LabEye/IFUNC files
|
||||
self.tile = [
|
||||
ImageFile._Tile("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))
|
||||
]
|
||||
|
||||
@property
|
||||
def n_frames(self) -> int:
|
||||
return self.info[FRAMES]
|
||||
|
||||
@property
|
||||
def is_animated(self) -> bool:
|
||||
return self.info[FRAMES] > 1
|
||||
|
||||
def seek(self, frame: int) -> None:
|
||||
if not self._seek_check(frame):
|
||||
return
|
||||
if isinstance(self._fp, DeferredError):
|
||||
raise self._fp.ex
|
||||
|
||||
self.frame = frame
|
||||
|
||||
if self.mode == "1":
|
||||
bits = 1
|
||||
else:
|
||||
bits = 8 * len(self.mode)
|
||||
|
||||
size = ((self.size[0] * bits + 7) // 8) * self.size[1]
|
||||
offs = self.__offset + frame * size
|
||||
|
||||
self.fp = self._fp
|
||||
|
||||
self.tile = [
|
||||
ImageFile._Tile("raw", (0, 0) + self.size, offs, (self.rawmode, 0, -1))
|
||||
]
|
||||
|
||||
def tell(self) -> int:
|
||||
return self.frame
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
# Save IM files
|
||||
|
||||
|
||||
SAVE = {
|
||||
# mode: (im type, raw mode)
|
||||
"1": ("0 1", "1"),
|
||||
"L": ("Greyscale", "L"),
|
||||
"LA": ("LA", "LA;L"),
|
||||
"P": ("Greyscale", "P"),
|
||||
"PA": ("LA", "PA;L"),
|
||||
"I": ("L 32S", "I;32S"),
|
||||
"I;16": ("L 16", "I;16"),
|
||||
"I;16L": ("L 16L", "I;16L"),
|
||||
"I;16B": ("L 16B", "I;16B"),
|
||||
"F": ("L 32F", "F;32F"),
|
||||
"RGB": ("RGB", "RGB;L"),
|
||||
"RGBA": ("RGBA", "RGBA;L"),
|
||||
"RGBX": ("RGBX", "RGBX;L"),
|
||||
"CMYK": ("CMYK", "CMYK;L"),
|
||||
"YCbCr": ("YCC", "YCbCr;L"),
|
||||
}
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
try:
|
||||
image_type, rawmode = SAVE[im.mode]
|
||||
except KeyError as e:
|
||||
msg = f"Cannot save {im.mode} images as IM"
|
||||
raise ValueError(msg) from e
|
||||
|
||||
frames = im.encoderinfo.get("frames", 1)
|
||||
|
||||
fp.write(f"Image type: {image_type} image\r\n".encode("ascii"))
|
||||
if filename:
|
||||
# Each line must be 100 characters or less,
|
||||
# or: SyntaxError("not an IM file")
|
||||
# 8 characters are used for "Name: " and "\r\n"
|
||||
# Keep just the filename, ditch the potentially overlong path
|
||||
if isinstance(filename, bytes):
|
||||
filename = filename.decode("ascii")
|
||||
name, ext = os.path.splitext(os.path.basename(filename))
|
||||
name = "".join([name[: 92 - len(ext)], ext])
|
||||
|
||||
fp.write(f"Name: {name}\r\n".encode("ascii"))
|
||||
fp.write(f"Image size (x*y): {im.size[0]}*{im.size[1]}\r\n".encode("ascii"))
|
||||
fp.write(f"File size (no of images): {frames}\r\n".encode("ascii"))
|
||||
if im.mode in ["P", "PA"]:
|
||||
fp.write(b"Lut: 1\r\n")
|
||||
fp.write(b"\000" * (511 - fp.tell()) + b"\032")
|
||||
if im.mode in ["P", "PA"]:
|
||||
im_palette = im.im.getpalette("RGB", "RGB;L")
|
||||
colors = len(im_palette) // 3
|
||||
palette = b""
|
||||
for i in range(3):
|
||||
palette += im_palette[colors * i : colors * (i + 1)]
|
||||
palette += b"\x00" * (256 - colors)
|
||||
fp.write(palette) # 768 bytes
|
||||
ImageFile._save(
|
||||
im, fp, [ImageFile._Tile("raw", (0, 0) + im.size, 0, (rawmode, 0, -1))]
|
||||
)
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
# Registry
|
||||
|
||||
|
||||
Image.register_open(ImImageFile.format, ImImageFile)
|
||||
Image.register_save(ImImageFile.format, _save)
|
||||
|
||||
Image.register_extension(ImImageFile.format, ".im")
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,311 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# standard channel operations
|
||||
#
|
||||
# History:
|
||||
# 1996-03-24 fl Created
|
||||
# 1996-08-13 fl Added logical operations (for "1" images)
|
||||
# 2000-10-12 fl Added offset method (from Image.py)
|
||||
#
|
||||
# Copyright (c) 1997-2000 by Secret Labs AB
|
||||
# Copyright (c) 1996-2000 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
from . import Image
|
||||
|
||||
|
||||
def constant(image: Image.Image, value: int) -> Image.Image:
|
||||
"""Fill a channel with a given gray level.
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
return Image.new("L", image.size, value)
|
||||
|
||||
|
||||
def duplicate(image: Image.Image) -> Image.Image:
|
||||
"""Copy a channel. Alias for :py:meth:`PIL.Image.Image.copy`.
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
return image.copy()
|
||||
|
||||
|
||||
def invert(image: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Invert an image (channel). ::
|
||||
|
||||
out = MAX - image
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image.load()
|
||||
return image._new(image.im.chop_invert())
|
||||
|
||||
|
||||
def lighter(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Compares the two images, pixel by pixel, and returns a new image containing
|
||||
the lighter values. ::
|
||||
|
||||
out = max(image1, image2)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_lighter(image2.im))
|
||||
|
||||
|
||||
def darker(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Compares the two images, pixel by pixel, and returns a new image containing
|
||||
the darker values. ::
|
||||
|
||||
out = min(image1, image2)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_darker(image2.im))
|
||||
|
||||
|
||||
def difference(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Returns the absolute value of the pixel-by-pixel difference between the two
|
||||
images. ::
|
||||
|
||||
out = abs(image1 - image2)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_difference(image2.im))
|
||||
|
||||
|
||||
def multiply(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Superimposes two images on top of each other.
|
||||
|
||||
If you multiply an image with a solid black image, the result is black. If
|
||||
you multiply with a solid white image, the image is unaffected. ::
|
||||
|
||||
out = image1 * image2 / MAX
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_multiply(image2.im))
|
||||
|
||||
|
||||
def screen(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Superimposes two inverted images on top of each other. ::
|
||||
|
||||
out = MAX - ((MAX - image1) * (MAX - image2) / MAX)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_screen(image2.im))
|
||||
|
||||
|
||||
def soft_light(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Superimposes two images on top of each other using the Soft Light algorithm
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_soft_light(image2.im))
|
||||
|
||||
|
||||
def hard_light(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Superimposes two images on top of each other using the Hard Light algorithm
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_hard_light(image2.im))
|
||||
|
||||
|
||||
def overlay(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Superimposes two images on top of each other using the Overlay algorithm
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_overlay(image2.im))
|
||||
|
||||
|
||||
def add(
|
||||
image1: Image.Image, image2: Image.Image, scale: float = 1.0, offset: float = 0
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Adds two images, dividing the result by scale and adding the
|
||||
offset. If omitted, scale defaults to 1.0, and offset to 0.0. ::
|
||||
|
||||
out = ((image1 + image2) / scale + offset)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_add(image2.im, scale, offset))
|
||||
|
||||
|
||||
def subtract(
|
||||
image1: Image.Image, image2: Image.Image, scale: float = 1.0, offset: float = 0
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Subtracts two images, dividing the result by scale and adding the offset.
|
||||
If omitted, scale defaults to 1.0, and offset to 0.0. ::
|
||||
|
||||
out = ((image1 - image2) / scale + offset)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_subtract(image2.im, scale, offset))
|
||||
|
||||
|
||||
def add_modulo(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""Add two images, without clipping the result. ::
|
||||
|
||||
out = ((image1 + image2) % MAX)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_add_modulo(image2.im))
|
||||
|
||||
|
||||
def subtract_modulo(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""Subtract two images, without clipping the result. ::
|
||||
|
||||
out = ((image1 - image2) % MAX)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_subtract_modulo(image2.im))
|
||||
|
||||
|
||||
def logical_and(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""Logical AND between two images.
|
||||
|
||||
Both of the images must have mode "1". If you would like to perform a
|
||||
logical AND on an image with a mode other than "1", try
|
||||
:py:meth:`~PIL.ImageChops.multiply` instead, using a black-and-white mask
|
||||
as the second image. ::
|
||||
|
||||
out = ((image1 and image2) % MAX)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_and(image2.im))
|
||||
|
||||
|
||||
def logical_or(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""Logical OR between two images.
|
||||
|
||||
Both of the images must have mode "1". ::
|
||||
|
||||
out = ((image1 or image2) % MAX)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_or(image2.im))
|
||||
|
||||
|
||||
def logical_xor(image1: Image.Image, image2: Image.Image) -> Image.Image:
|
||||
"""Logical XOR between two images.
|
||||
|
||||
Both of the images must have mode "1". ::
|
||||
|
||||
out = ((bool(image1) != bool(image2)) % MAX)
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
image1.load()
|
||||
image2.load()
|
||||
return image1._new(image1.im.chop_xor(image2.im))
|
||||
|
||||
|
||||
def blend(image1: Image.Image, image2: Image.Image, alpha: float) -> Image.Image:
|
||||
"""Blend images using constant transparency weight. Alias for
|
||||
:py:func:`PIL.Image.blend`.
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
return Image.blend(image1, image2, alpha)
|
||||
|
||||
|
||||
def composite(
|
||||
image1: Image.Image, image2: Image.Image, mask: Image.Image
|
||||
) -> Image.Image:
|
||||
"""Create composite using transparency mask. Alias for
|
||||
:py:func:`PIL.Image.composite`.
|
||||
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
return Image.composite(image1, image2, mask)
|
||||
|
||||
|
||||
def offset(image: Image.Image, xoffset: int, yoffset: int | None = None) -> Image.Image:
|
||||
"""Returns a copy of the image where data has been offset by the given
|
||||
distances. Data wraps around the edges. If ``yoffset`` is omitted, it
|
||||
is assumed to be equal to ``xoffset``.
|
||||
|
||||
:param image: Input image.
|
||||
:param xoffset: The horizontal distance.
|
||||
:param yoffset: The vertical distance. If omitted, both
|
||||
distances are set to the same value.
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
|
||||
if yoffset is None:
|
||||
yoffset = xoffset
|
||||
image.load()
|
||||
return image._new(image.im.offset(xoffset, yoffset))
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,320 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# map CSS3-style colour description strings to RGB
|
||||
#
|
||||
# History:
|
||||
# 2002-10-24 fl Added support for CSS-style color strings
|
||||
# 2002-12-15 fl Added RGBA support
|
||||
# 2004-03-27 fl Fixed remaining int() problems for Python 1.5.2
|
||||
# 2004-07-19 fl Fixed gray/grey spelling issues
|
||||
# 2009-03-05 fl Fixed rounding error in grayscale calculation
|
||||
#
|
||||
# Copyright (c) 2002-2004 by Secret Labs AB
|
||||
# Copyright (c) 2002-2004 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import re
|
||||
from functools import lru_cache
|
||||
|
||||
from . import Image
|
||||
|
||||
|
||||
@lru_cache
|
||||
def getrgb(color: str) -> tuple[int, int, int] | tuple[int, int, int, int]:
|
||||
"""
|
||||
Convert a color string to an RGB or RGBA tuple. If the string cannot be
|
||||
parsed, this function raises a :py:exc:`ValueError` exception.
|
||||
|
||||
.. versionadded:: 1.1.4
|
||||
|
||||
:param color: A color string
|
||||
:return: ``(red, green, blue[, alpha])``
|
||||
"""
|
||||
if len(color) > 100:
|
||||
msg = "color specifier is too long"
|
||||
raise ValueError(msg)
|
||||
color = color.lower()
|
||||
|
||||
rgb = colormap.get(color, None)
|
||||
if rgb:
|
||||
if isinstance(rgb, tuple):
|
||||
return rgb
|
||||
rgb_tuple = getrgb(rgb)
|
||||
assert len(rgb_tuple) == 3
|
||||
colormap[color] = rgb_tuple
|
||||
return rgb_tuple
|
||||
|
||||
# check for known string formats
|
||||
if re.match("#[a-f0-9]{3}$", color):
|
||||
return int(color[1] * 2, 16), int(color[2] * 2, 16), int(color[3] * 2, 16)
|
||||
|
||||
if re.match("#[a-f0-9]{4}$", color):
|
||||
return (
|
||||
int(color[1] * 2, 16),
|
||||
int(color[2] * 2, 16),
|
||||
int(color[3] * 2, 16),
|
||||
int(color[4] * 2, 16),
|
||||
)
|
||||
|
||||
if re.match("#[a-f0-9]{6}$", color):
|
||||
return int(color[1:3], 16), int(color[3:5], 16), int(color[5:7], 16)
|
||||
|
||||
if re.match("#[a-f0-9]{8}$", color):
|
||||
return (
|
||||
int(color[1:3], 16),
|
||||
int(color[3:5], 16),
|
||||
int(color[5:7], 16),
|
||||
int(color[7:9], 16),
|
||||
)
|
||||
|
||||
m = re.match(r"rgb\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$", color)
|
||||
if m:
|
||||
return int(m.group(1)), int(m.group(2)), int(m.group(3))
|
||||
|
||||
m = re.match(r"rgb\(\s*(\d+)%\s*,\s*(\d+)%\s*,\s*(\d+)%\s*\)$", color)
|
||||
if m:
|
||||
return (
|
||||
int((int(m.group(1)) * 255) / 100.0 + 0.5),
|
||||
int((int(m.group(2)) * 255) / 100.0 + 0.5),
|
||||
int((int(m.group(3)) * 255) / 100.0 + 0.5),
|
||||
)
|
||||
|
||||
m = re.match(
|
||||
r"hsl\(\s*(\d+\.?\d*)\s*,\s*(\d+\.?\d*)%\s*,\s*(\d+\.?\d*)%\s*\)$", color
|
||||
)
|
||||
if m:
|
||||
from colorsys import hls_to_rgb
|
||||
|
||||
rgb_floats = hls_to_rgb(
|
||||
float(m.group(1)) / 360.0,
|
||||
float(m.group(3)) / 100.0,
|
||||
float(m.group(2)) / 100.0,
|
||||
)
|
||||
return (
|
||||
int(rgb_floats[0] * 255 + 0.5),
|
||||
int(rgb_floats[1] * 255 + 0.5),
|
||||
int(rgb_floats[2] * 255 + 0.5),
|
||||
)
|
||||
|
||||
m = re.match(
|
||||
r"hs[bv]\(\s*(\d+\.?\d*)\s*,\s*(\d+\.?\d*)%\s*,\s*(\d+\.?\d*)%\s*\)$", color
|
||||
)
|
||||
if m:
|
||||
from colorsys import hsv_to_rgb
|
||||
|
||||
rgb_floats = hsv_to_rgb(
|
||||
float(m.group(1)) / 360.0,
|
||||
float(m.group(2)) / 100.0,
|
||||
float(m.group(3)) / 100.0,
|
||||
)
|
||||
return (
|
||||
int(rgb_floats[0] * 255 + 0.5),
|
||||
int(rgb_floats[1] * 255 + 0.5),
|
||||
int(rgb_floats[2] * 255 + 0.5),
|
||||
)
|
||||
|
||||
m = re.match(r"rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$", color)
|
||||
if m:
|
||||
return int(m.group(1)), int(m.group(2)), int(m.group(3)), int(m.group(4))
|
||||
msg = f"unknown color specifier: {repr(color)}"
|
||||
raise ValueError(msg)
|
||||
|
||||
|
||||
@lru_cache
|
||||
def getcolor(color: str, mode: str) -> int | tuple[int, ...]:
|
||||
"""
|
||||
Same as :py:func:`~PIL.ImageColor.getrgb` for most modes. However, if
|
||||
``mode`` is HSV, converts the RGB value to a HSV value, or if ``mode`` is
|
||||
not color or a palette image, converts the RGB value to a grayscale value.
|
||||
If the string cannot be parsed, this function raises a :py:exc:`ValueError`
|
||||
exception.
|
||||
|
||||
.. versionadded:: 1.1.4
|
||||
|
||||
:param color: A color string
|
||||
:param mode: Convert result to this mode
|
||||
:return: ``graylevel, (graylevel, alpha) or (red, green, blue[, alpha])``
|
||||
"""
|
||||
# same as getrgb, but converts the result to the given mode
|
||||
rgb, alpha = getrgb(color), 255
|
||||
if len(rgb) == 4:
|
||||
alpha = rgb[3]
|
||||
rgb = rgb[:3]
|
||||
|
||||
if mode == "HSV":
|
||||
from colorsys import rgb_to_hsv
|
||||
|
||||
r, g, b = rgb
|
||||
h, s, v = rgb_to_hsv(r / 255, g / 255, b / 255)
|
||||
return int(h * 255), int(s * 255), int(v * 255)
|
||||
elif Image.getmodebase(mode) == "L":
|
||||
r, g, b = rgb
|
||||
# ITU-R Recommendation 601-2 for nonlinear RGB
|
||||
# scaled to 24 bits to match the convert's implementation.
|
||||
graylevel = (r * 19595 + g * 38470 + b * 7471 + 0x8000) >> 16
|
||||
if mode[-1] == "A":
|
||||
return graylevel, alpha
|
||||
return graylevel
|
||||
elif mode[-1] == "A":
|
||||
return rgb + (alpha,)
|
||||
return rgb
|
||||
|
||||
|
||||
colormap: dict[str, str | tuple[int, int, int]] = {
|
||||
# X11 colour table from https://drafts.csswg.org/css-color-4/, with
|
||||
# gray/grey spelling issues fixed. This is a superset of HTML 4.0
|
||||
# colour names used in CSS 1.
|
||||
"aliceblue": "#f0f8ff",
|
||||
"antiquewhite": "#faebd7",
|
||||
"aqua": "#00ffff",
|
||||
"aquamarine": "#7fffd4",
|
||||
"azure": "#f0ffff",
|
||||
"beige": "#f5f5dc",
|
||||
"bisque": "#ffe4c4",
|
||||
"black": "#000000",
|
||||
"blanchedalmond": "#ffebcd",
|
||||
"blue": "#0000ff",
|
||||
"blueviolet": "#8a2be2",
|
||||
"brown": "#a52a2a",
|
||||
"burlywood": "#deb887",
|
||||
"cadetblue": "#5f9ea0",
|
||||
"chartreuse": "#7fff00",
|
||||
"chocolate": "#d2691e",
|
||||
"coral": "#ff7f50",
|
||||
"cornflowerblue": "#6495ed",
|
||||
"cornsilk": "#fff8dc",
|
||||
"crimson": "#dc143c",
|
||||
"cyan": "#00ffff",
|
||||
"darkblue": "#00008b",
|
||||
"darkcyan": "#008b8b",
|
||||
"darkgoldenrod": "#b8860b",
|
||||
"darkgray": "#a9a9a9",
|
||||
"darkgrey": "#a9a9a9",
|
||||
"darkgreen": "#006400",
|
||||
"darkkhaki": "#bdb76b",
|
||||
"darkmagenta": "#8b008b",
|
||||
"darkolivegreen": "#556b2f",
|
||||
"darkorange": "#ff8c00",
|
||||
"darkorchid": "#9932cc",
|
||||
"darkred": "#8b0000",
|
||||
"darksalmon": "#e9967a",
|
||||
"darkseagreen": "#8fbc8f",
|
||||
"darkslateblue": "#483d8b",
|
||||
"darkslategray": "#2f4f4f",
|
||||
"darkslategrey": "#2f4f4f",
|
||||
"darkturquoise": "#00ced1",
|
||||
"darkviolet": "#9400d3",
|
||||
"deeppink": "#ff1493",
|
||||
"deepskyblue": "#00bfff",
|
||||
"dimgray": "#696969",
|
||||
"dimgrey": "#696969",
|
||||
"dodgerblue": "#1e90ff",
|
||||
"firebrick": "#b22222",
|
||||
"floralwhite": "#fffaf0",
|
||||
"forestgreen": "#228b22",
|
||||
"fuchsia": "#ff00ff",
|
||||
"gainsboro": "#dcdcdc",
|
||||
"ghostwhite": "#f8f8ff",
|
||||
"gold": "#ffd700",
|
||||
"goldenrod": "#daa520",
|
||||
"gray": "#808080",
|
||||
"grey": "#808080",
|
||||
"green": "#008000",
|
||||
"greenyellow": "#adff2f",
|
||||
"honeydew": "#f0fff0",
|
||||
"hotpink": "#ff69b4",
|
||||
"indianred": "#cd5c5c",
|
||||
"indigo": "#4b0082",
|
||||
"ivory": "#fffff0",
|
||||
"khaki": "#f0e68c",
|
||||
"lavender": "#e6e6fa",
|
||||
"lavenderblush": "#fff0f5",
|
||||
"lawngreen": "#7cfc00",
|
||||
"lemonchiffon": "#fffacd",
|
||||
"lightblue": "#add8e6",
|
||||
"lightcoral": "#f08080",
|
||||
"lightcyan": "#e0ffff",
|
||||
"lightgoldenrodyellow": "#fafad2",
|
||||
"lightgreen": "#90ee90",
|
||||
"lightgray": "#d3d3d3",
|
||||
"lightgrey": "#d3d3d3",
|
||||
"lightpink": "#ffb6c1",
|
||||
"lightsalmon": "#ffa07a",
|
||||
"lightseagreen": "#20b2aa",
|
||||
"lightskyblue": "#87cefa",
|
||||
"lightslategray": "#778899",
|
||||
"lightslategrey": "#778899",
|
||||
"lightsteelblue": "#b0c4de",
|
||||
"lightyellow": "#ffffe0",
|
||||
"lime": "#00ff00",
|
||||
"limegreen": "#32cd32",
|
||||
"linen": "#faf0e6",
|
||||
"magenta": "#ff00ff",
|
||||
"maroon": "#800000",
|
||||
"mediumaquamarine": "#66cdaa",
|
||||
"mediumblue": "#0000cd",
|
||||
"mediumorchid": "#ba55d3",
|
||||
"mediumpurple": "#9370db",
|
||||
"mediumseagreen": "#3cb371",
|
||||
"mediumslateblue": "#7b68ee",
|
||||
"mediumspringgreen": "#00fa9a",
|
||||
"mediumturquoise": "#48d1cc",
|
||||
"mediumvioletred": "#c71585",
|
||||
"midnightblue": "#191970",
|
||||
"mintcream": "#f5fffa",
|
||||
"mistyrose": "#ffe4e1",
|
||||
"moccasin": "#ffe4b5",
|
||||
"navajowhite": "#ffdead",
|
||||
"navy": "#000080",
|
||||
"oldlace": "#fdf5e6",
|
||||
"olive": "#808000",
|
||||
"olivedrab": "#6b8e23",
|
||||
"orange": "#ffa500",
|
||||
"orangered": "#ff4500",
|
||||
"orchid": "#da70d6",
|
||||
"palegoldenrod": "#eee8aa",
|
||||
"palegreen": "#98fb98",
|
||||
"paleturquoise": "#afeeee",
|
||||
"palevioletred": "#db7093",
|
||||
"papayawhip": "#ffefd5",
|
||||
"peachpuff": "#ffdab9",
|
||||
"peru": "#cd853f",
|
||||
"pink": "#ffc0cb",
|
||||
"plum": "#dda0dd",
|
||||
"powderblue": "#b0e0e6",
|
||||
"purple": "#800080",
|
||||
"rebeccapurple": "#663399",
|
||||
"red": "#ff0000",
|
||||
"rosybrown": "#bc8f8f",
|
||||
"royalblue": "#4169e1",
|
||||
"saddlebrown": "#8b4513",
|
||||
"salmon": "#fa8072",
|
||||
"sandybrown": "#f4a460",
|
||||
"seagreen": "#2e8b57",
|
||||
"seashell": "#fff5ee",
|
||||
"sienna": "#a0522d",
|
||||
"silver": "#c0c0c0",
|
||||
"skyblue": "#87ceeb",
|
||||
"slateblue": "#6a5acd",
|
||||
"slategray": "#708090",
|
||||
"slategrey": "#708090",
|
||||
"snow": "#fffafa",
|
||||
"springgreen": "#00ff7f",
|
||||
"steelblue": "#4682b4",
|
||||
"tan": "#d2b48c",
|
||||
"teal": "#008080",
|
||||
"thistle": "#d8bfd8",
|
||||
"tomato": "#ff6347",
|
||||
"turquoise": "#40e0d0",
|
||||
"violet": "#ee82ee",
|
||||
"wheat": "#f5deb3",
|
||||
"white": "#ffffff",
|
||||
"whitesmoke": "#f5f5f5",
|
||||
"yellow": "#ffff00",
|
||||
"yellowgreen": "#9acd32",
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,243 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# WCK-style drawing interface operations
|
||||
#
|
||||
# History:
|
||||
# 2003-12-07 fl created
|
||||
# 2005-05-15 fl updated; added to PIL as ImageDraw2
|
||||
# 2005-05-15 fl added text support
|
||||
# 2005-05-20 fl added arc/chord/pieslice support
|
||||
#
|
||||
# Copyright (c) 2003-2005 by Secret Labs AB
|
||||
# Copyright (c) 2003-2005 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
|
||||
|
||||
"""
|
||||
(Experimental) WCK-style drawing interface operations
|
||||
|
||||
.. seealso:: :py:mod:`PIL.ImageDraw`
|
||||
"""
|
||||
from __future__ import annotations
|
||||
|
||||
from typing import Any, AnyStr, BinaryIO
|
||||
|
||||
from . import Image, ImageColor, ImageDraw, ImageFont, ImagePath
|
||||
from ._typing import Coords, StrOrBytesPath
|
||||
|
||||
|
||||
class Pen:
|
||||
"""Stores an outline color and width."""
|
||||
|
||||
def __init__(self, color: str, width: int = 1, opacity: int = 255) -> None:
|
||||
self.color = ImageColor.getrgb(color)
|
||||
self.width = width
|
||||
|
||||
|
||||
class Brush:
|
||||
"""Stores a fill color"""
|
||||
|
||||
def __init__(self, color: str, opacity: int = 255) -> None:
|
||||
self.color = ImageColor.getrgb(color)
|
||||
|
||||
|
||||
class Font:
|
||||
"""Stores a TrueType font and color"""
|
||||
|
||||
def __init__(
|
||||
self, color: str, file: StrOrBytesPath | BinaryIO, size: float = 12
|
||||
) -> None:
|
||||
# FIXME: add support for bitmap fonts
|
||||
self.color = ImageColor.getrgb(color)
|
||||
self.font = ImageFont.truetype(file, size)
|
||||
|
||||
|
||||
class Draw:
|
||||
"""
|
||||
(Experimental) WCK-style drawing interface
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
image: Image.Image | str,
|
||||
size: tuple[int, int] | list[int] | None = None,
|
||||
color: float | tuple[float, ...] | str | None = None,
|
||||
) -> None:
|
||||
if isinstance(image, str):
|
||||
if size is None:
|
||||
msg = "If image argument is mode string, size must be a list or tuple"
|
||||
raise ValueError(msg)
|
||||
image = Image.new(image, size, color)
|
||||
self.draw = ImageDraw.Draw(image)
|
||||
self.image = image
|
||||
self.transform: tuple[float, float, float, float, float, float] | None = None
|
||||
|
||||
def flush(self) -> Image.Image:
|
||||
return self.image
|
||||
|
||||
def render(
|
||||
self,
|
||||
op: str,
|
||||
xy: Coords,
|
||||
pen: Pen | Brush | None,
|
||||
brush: Brush | Pen | None = None,
|
||||
**kwargs: Any,
|
||||
) -> None:
|
||||
# handle color arguments
|
||||
outline = fill = None
|
||||
width = 1
|
||||
if isinstance(pen, Pen):
|
||||
outline = pen.color
|
||||
width = pen.width
|
||||
elif isinstance(brush, Pen):
|
||||
outline = brush.color
|
||||
width = brush.width
|
||||
if isinstance(brush, Brush):
|
||||
fill = brush.color
|
||||
elif isinstance(pen, Brush):
|
||||
fill = pen.color
|
||||
# handle transformation
|
||||
if self.transform:
|
||||
path = ImagePath.Path(xy)
|
||||
path.transform(self.transform)
|
||||
xy = path
|
||||
# render the item
|
||||
if op in ("arc", "line"):
|
||||
kwargs.setdefault("fill", outline)
|
||||
else:
|
||||
kwargs.setdefault("fill", fill)
|
||||
kwargs.setdefault("outline", outline)
|
||||
if op == "line":
|
||||
kwargs.setdefault("width", width)
|
||||
getattr(self.draw, op)(xy, **kwargs)
|
||||
|
||||
def settransform(self, offset: tuple[float, float]) -> None:
|
||||
"""Sets a transformation offset."""
|
||||
(xoffset, yoffset) = offset
|
||||
self.transform = (1, 0, xoffset, 0, 1, yoffset)
|
||||
|
||||
def arc(
|
||||
self,
|
||||
xy: Coords,
|
||||
pen: Pen | Brush | None,
|
||||
start: float,
|
||||
end: float,
|
||||
*options: Any,
|
||||
) -> None:
|
||||
"""
|
||||
Draws an arc (a portion of a circle outline) between the start and end
|
||||
angles, inside the given bounding box.
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.arc`
|
||||
"""
|
||||
self.render("arc", xy, pen, *options, start=start, end=end)
|
||||
|
||||
def chord(
|
||||
self,
|
||||
xy: Coords,
|
||||
pen: Pen | Brush | None,
|
||||
start: float,
|
||||
end: float,
|
||||
*options: Any,
|
||||
) -> None:
|
||||
"""
|
||||
Same as :py:meth:`~PIL.ImageDraw2.Draw.arc`, but connects the end points
|
||||
with a straight line.
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.chord`
|
||||
"""
|
||||
self.render("chord", xy, pen, *options, start=start, end=end)
|
||||
|
||||
def ellipse(self, xy: Coords, pen: Pen | Brush | None, *options: Any) -> None:
|
||||
"""
|
||||
Draws an ellipse inside the given bounding box.
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.ellipse`
|
||||
"""
|
||||
self.render("ellipse", xy, pen, *options)
|
||||
|
||||
def line(self, xy: Coords, pen: Pen | Brush | None, *options: Any) -> None:
|
||||
"""
|
||||
Draws a line between the coordinates in the ``xy`` list.
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.line`
|
||||
"""
|
||||
self.render("line", xy, pen, *options)
|
||||
|
||||
def pieslice(
|
||||
self,
|
||||
xy: Coords,
|
||||
pen: Pen | Brush | None,
|
||||
start: float,
|
||||
end: float,
|
||||
*options: Any,
|
||||
) -> None:
|
||||
"""
|
||||
Same as arc, but also draws straight lines between the end points and the
|
||||
center of the bounding box.
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.pieslice`
|
||||
"""
|
||||
self.render("pieslice", xy, pen, *options, start=start, end=end)
|
||||
|
||||
def polygon(self, xy: Coords, pen: Pen | Brush | None, *options: Any) -> None:
|
||||
"""
|
||||
Draws a polygon.
|
||||
|
||||
The polygon outline consists of straight lines between the given
|
||||
coordinates, plus a straight line between the last and the first
|
||||
coordinate.
|
||||
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.polygon`
|
||||
"""
|
||||
self.render("polygon", xy, pen, *options)
|
||||
|
||||
def rectangle(self, xy: Coords, pen: Pen | Brush | None, *options: Any) -> None:
|
||||
"""
|
||||
Draws a rectangle.
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.rectangle`
|
||||
"""
|
||||
self.render("rectangle", xy, pen, *options)
|
||||
|
||||
def text(self, xy: tuple[float, float], text: AnyStr, font: Font) -> None:
|
||||
"""
|
||||
Draws the string at the given position.
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.text`
|
||||
"""
|
||||
if self.transform:
|
||||
path = ImagePath.Path(xy)
|
||||
path.transform(self.transform)
|
||||
xy = path
|
||||
self.draw.text(xy, text, font=font.font, fill=font.color)
|
||||
|
||||
def textbbox(
|
||||
self, xy: tuple[float, float], text: AnyStr, font: Font
|
||||
) -> tuple[float, float, float, float]:
|
||||
"""
|
||||
Returns bounding box (in pixels) of given text.
|
||||
|
||||
:return: ``(left, top, right, bottom)`` bounding box
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.textbbox`
|
||||
"""
|
||||
if self.transform:
|
||||
path = ImagePath.Path(xy)
|
||||
path.transform(self.transform)
|
||||
xy = path
|
||||
return self.draw.textbbox(xy, text, font=font.font)
|
||||
|
||||
def textlength(self, text: AnyStr, font: Font) -> float:
|
||||
"""
|
||||
Returns length (in pixels) of given text.
|
||||
This is the amount by which following text should be offset.
|
||||
|
||||
.. seealso:: :py:meth:`PIL.ImageDraw.ImageDraw.textlength`
|
||||
"""
|
||||
return self.draw.textlength(text, font=font.font)
|
||||
@ -0,0 +1,113 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# image enhancement classes
|
||||
#
|
||||
# For a background, see "Image Processing By Interpolation and
|
||||
# Extrapolation", Paul Haeberli and Douglas Voorhies. Available
|
||||
# at http://www.graficaobscura.com/interp/index.html
|
||||
#
|
||||
# History:
|
||||
# 1996-03-23 fl Created
|
||||
# 2009-06-16 fl Fixed mean calculation
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1996.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
from . import Image, ImageFilter, ImageStat
|
||||
|
||||
|
||||
class _Enhance:
|
||||
image: Image.Image
|
||||
degenerate: Image.Image
|
||||
|
||||
def enhance(self, factor: float) -> Image.Image:
|
||||
"""
|
||||
Returns an enhanced image.
|
||||
|
||||
:param factor: A floating point value controlling the enhancement.
|
||||
Factor 1.0 always returns a copy of the original image,
|
||||
lower factors mean less color (brightness, contrast,
|
||||
etc), and higher values more. There are no restrictions
|
||||
on this value.
|
||||
:rtype: :py:class:`~PIL.Image.Image`
|
||||
"""
|
||||
return Image.blend(self.degenerate, self.image, factor)
|
||||
|
||||
|
||||
class Color(_Enhance):
|
||||
"""Adjust image color balance.
|
||||
|
||||
This class can be used to adjust the colour balance of an image, in
|
||||
a manner similar to the controls on a colour TV set. An enhancement
|
||||
factor of 0.0 gives a black and white image. A factor of 1.0 gives
|
||||
the original image.
|
||||
"""
|
||||
|
||||
def __init__(self, image: Image.Image) -> None:
|
||||
self.image = image
|
||||
self.intermediate_mode = "L"
|
||||
if "A" in image.getbands():
|
||||
self.intermediate_mode = "LA"
|
||||
|
||||
if self.intermediate_mode != image.mode:
|
||||
image = image.convert(self.intermediate_mode).convert(image.mode)
|
||||
self.degenerate = image
|
||||
|
||||
|
||||
class Contrast(_Enhance):
|
||||
"""Adjust image contrast.
|
||||
|
||||
This class can be used to control the contrast of an image, similar
|
||||
to the contrast control on a TV set. An enhancement factor of 0.0
|
||||
gives a solid gray image. A factor of 1.0 gives the original image.
|
||||
"""
|
||||
|
||||
def __init__(self, image: Image.Image) -> None:
|
||||
self.image = image
|
||||
if image.mode != "L":
|
||||
image = image.convert("L")
|
||||
mean = int(ImageStat.Stat(image).mean[0] + 0.5)
|
||||
self.degenerate = Image.new("L", image.size, mean)
|
||||
if self.degenerate.mode != self.image.mode:
|
||||
self.degenerate = self.degenerate.convert(self.image.mode)
|
||||
|
||||
if "A" in self.image.getbands():
|
||||
self.degenerate.putalpha(self.image.getchannel("A"))
|
||||
|
||||
|
||||
class Brightness(_Enhance):
|
||||
"""Adjust image brightness.
|
||||
|
||||
This class can be used to control the brightness of an image. An
|
||||
enhancement factor of 0.0 gives a black image. A factor of 1.0 gives the
|
||||
original image.
|
||||
"""
|
||||
|
||||
def __init__(self, image: Image.Image) -> None:
|
||||
self.image = image
|
||||
self.degenerate = Image.new(image.mode, image.size, 0)
|
||||
|
||||
if "A" in image.getbands():
|
||||
self.degenerate.putalpha(image.getchannel("A"))
|
||||
|
||||
|
||||
class Sharpness(_Enhance):
|
||||
"""Adjust image sharpness.
|
||||
|
||||
This class can be used to adjust the sharpness of an image. An
|
||||
enhancement factor of 0.0 gives a blurred image, a factor of 1.0 gives the
|
||||
original image, and a factor of 2.0 gives a sharpened image.
|
||||
"""
|
||||
|
||||
def __init__(self, image: Image.Image) -> None:
|
||||
self.image = image
|
||||
self.degenerate = image.filter(ImageFilter.SMOOTH)
|
||||
|
||||
if "A" in image.getbands():
|
||||
self.degenerate.putalpha(image.getchannel("A"))
|
||||
@ -0,0 +1,926 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# base class for image file handlers
|
||||
#
|
||||
# history:
|
||||
# 1995-09-09 fl Created
|
||||
# 1996-03-11 fl Fixed load mechanism.
|
||||
# 1996-04-15 fl Added pcx/xbm decoders.
|
||||
# 1996-04-30 fl Added encoders.
|
||||
# 1996-12-14 fl Added load helpers
|
||||
# 1997-01-11 fl Use encode_to_file where possible
|
||||
# 1997-08-27 fl Flush output in _save
|
||||
# 1998-03-05 fl Use memory mapping for some modes
|
||||
# 1999-02-04 fl Use memory mapping also for "I;16" and "I;16B"
|
||||
# 1999-05-31 fl Added image parser
|
||||
# 2000-10-12 fl Set readonly flag on memory-mapped images
|
||||
# 2002-03-20 fl Use better messages for common decoder errors
|
||||
# 2003-04-21 fl Fall back on mmap/map_buffer if map is not available
|
||||
# 2003-10-30 fl Added StubImageFile class
|
||||
# 2004-02-25 fl Made incremental parser more robust
|
||||
#
|
||||
# Copyright (c) 1997-2004 by Secret Labs AB
|
||||
# Copyright (c) 1995-2004 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import abc
|
||||
import io
|
||||
import itertools
|
||||
import logging
|
||||
import os
|
||||
import struct
|
||||
from typing import IO, Any, NamedTuple, cast
|
||||
|
||||
from . import ExifTags, Image
|
||||
from ._util import DeferredError, is_path
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from ._typing import StrOrBytesPath
|
||||
|
||||
logger = logging.getLogger(__name__)
|
||||
|
||||
MAXBLOCK = 65536
|
||||
"""
|
||||
By default, Pillow processes image data in blocks. This helps to prevent excessive use
|
||||
of resources. Codecs may disable this behaviour with ``_pulls_fd`` or ``_pushes_fd``.
|
||||
|
||||
When reading an image, this is the number of bytes to read at once.
|
||||
|
||||
When writing an image, this is the number of bytes to write at once.
|
||||
If the image width times 4 is greater, then that will be used instead.
|
||||
Plugins may also set a greater number.
|
||||
|
||||
User code may set this to another number.
|
||||
"""
|
||||
|
||||
SAFEBLOCK = 1024 * 1024
|
||||
|
||||
LOAD_TRUNCATED_IMAGES = False
|
||||
"""Whether or not to load truncated image files. User code may change this."""
|
||||
|
||||
ERRORS = {
|
||||
-1: "image buffer overrun error",
|
||||
-2: "decoding error",
|
||||
-3: "unknown error",
|
||||
-8: "bad configuration",
|
||||
-9: "out of memory error",
|
||||
}
|
||||
"""
|
||||
Dict of known error codes returned from :meth:`.PyDecoder.decode`,
|
||||
:meth:`.PyEncoder.encode` :meth:`.PyEncoder.encode_to_pyfd` and
|
||||
:meth:`.PyEncoder.encode_to_file`.
|
||||
"""
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
# Helpers
|
||||
|
||||
|
||||
def _get_oserror(error: int, *, encoder: bool) -> OSError:
|
||||
try:
|
||||
msg = Image.core.getcodecstatus(error)
|
||||
except AttributeError:
|
||||
msg = ERRORS.get(error)
|
||||
if not msg:
|
||||
msg = f"{'encoder' if encoder else 'decoder'} error {error}"
|
||||
msg += f" when {'writing' if encoder else 'reading'} image file"
|
||||
return OSError(msg)
|
||||
|
||||
|
||||
def _tilesort(t: _Tile) -> int:
|
||||
# sort on offset
|
||||
return t[2]
|
||||
|
||||
|
||||
class _Tile(NamedTuple):
|
||||
codec_name: str
|
||||
extents: tuple[int, int, int, int] | None
|
||||
offset: int = 0
|
||||
args: tuple[Any, ...] | str | None = None
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
# ImageFile base class
|
||||
|
||||
|
||||
class ImageFile(Image.Image):
|
||||
"""Base class for image file format handlers."""
|
||||
|
||||
def __init__(
|
||||
self, fp: StrOrBytesPath | IO[bytes], filename: str | bytes | None = None
|
||||
) -> None:
|
||||
super().__init__()
|
||||
|
||||
self._min_frame = 0
|
||||
|
||||
self.custom_mimetype: str | None = None
|
||||
|
||||
self.tile: list[_Tile] = []
|
||||
""" A list of tile descriptors """
|
||||
|
||||
self.readonly = 1 # until we know better
|
||||
|
||||
self.decoderconfig: tuple[Any, ...] = ()
|
||||
self.decodermaxblock = MAXBLOCK
|
||||
|
||||
if is_path(fp):
|
||||
# filename
|
||||
self.fp = open(fp, "rb")
|
||||
self.filename = os.fspath(fp)
|
||||
self._exclusive_fp = True
|
||||
else:
|
||||
# stream
|
||||
self.fp = cast(IO[bytes], fp)
|
||||
self.filename = filename if filename is not None else ""
|
||||
# can be overridden
|
||||
self._exclusive_fp = False
|
||||
|
||||
try:
|
||||
try:
|
||||
self._open()
|
||||
except (
|
||||
IndexError, # end of data
|
||||
TypeError, # end of data (ord)
|
||||
KeyError, # unsupported mode
|
||||
EOFError, # got header but not the first frame
|
||||
struct.error,
|
||||
) as v:
|
||||
raise SyntaxError(v) from v
|
||||
|
||||
if not self.mode or self.size[0] <= 0 or self.size[1] <= 0:
|
||||
msg = "not identified by this driver"
|
||||
raise SyntaxError(msg)
|
||||
except BaseException:
|
||||
# close the file only if we have opened it this constructor
|
||||
if self._exclusive_fp:
|
||||
self.fp.close()
|
||||
raise
|
||||
|
||||
def _open(self) -> None:
|
||||
pass
|
||||
|
||||
def _close_fp(self):
|
||||
if getattr(self, "_fp", False) and not isinstance(self._fp, DeferredError):
|
||||
if self._fp != self.fp:
|
||||
self._fp.close()
|
||||
self._fp = DeferredError(ValueError("Operation on closed image"))
|
||||
if self.fp:
|
||||
self.fp.close()
|
||||
|
||||
def close(self) -> None:
|
||||
"""
|
||||
Closes the file pointer, if possible.
|
||||
|
||||
This operation will destroy the image core and release its memory.
|
||||
The image data will be unusable afterward.
|
||||
|
||||
This function is required to close images that have multiple frames or
|
||||
have not had their file read and closed by the
|
||||
:py:meth:`~PIL.Image.Image.load` method. See :ref:`file-handling` for
|
||||
more information.
|
||||
"""
|
||||
try:
|
||||
self._close_fp()
|
||||
self.fp = None
|
||||
except Exception as msg:
|
||||
logger.debug("Error closing: %s", msg)
|
||||
|
||||
super().close()
|
||||
|
||||
def get_child_images(self) -> list[ImageFile]:
|
||||
child_images = []
|
||||
exif = self.getexif()
|
||||
ifds = []
|
||||
if ExifTags.Base.SubIFDs in exif:
|
||||
subifd_offsets = exif[ExifTags.Base.SubIFDs]
|
||||
if subifd_offsets:
|
||||
if not isinstance(subifd_offsets, tuple):
|
||||
subifd_offsets = (subifd_offsets,)
|
||||
for subifd_offset in subifd_offsets:
|
||||
ifds.append((exif._get_ifd_dict(subifd_offset), subifd_offset))
|
||||
ifd1 = exif.get_ifd(ExifTags.IFD.IFD1)
|
||||
if ifd1 and ifd1.get(ExifTags.Base.JpegIFOffset):
|
||||
assert exif._info is not None
|
||||
ifds.append((ifd1, exif._info.next))
|
||||
|
||||
offset = None
|
||||
for ifd, ifd_offset in ifds:
|
||||
assert self.fp is not None
|
||||
current_offset = self.fp.tell()
|
||||
if offset is None:
|
||||
offset = current_offset
|
||||
|
||||
fp = self.fp
|
||||
if ifd is not None:
|
||||
thumbnail_offset = ifd.get(ExifTags.Base.JpegIFOffset)
|
||||
if thumbnail_offset is not None:
|
||||
thumbnail_offset += getattr(self, "_exif_offset", 0)
|
||||
self.fp.seek(thumbnail_offset)
|
||||
|
||||
length = ifd.get(ExifTags.Base.JpegIFByteCount)
|
||||
assert isinstance(length, int)
|
||||
data = self.fp.read(length)
|
||||
fp = io.BytesIO(data)
|
||||
|
||||
with Image.open(fp) as im:
|
||||
from . import TiffImagePlugin
|
||||
|
||||
if thumbnail_offset is None and isinstance(
|
||||
im, TiffImagePlugin.TiffImageFile
|
||||
):
|
||||
im._frame_pos = [ifd_offset]
|
||||
im._seek(0)
|
||||
im.load()
|
||||
child_images.append(im)
|
||||
|
||||
if offset is not None:
|
||||
assert self.fp is not None
|
||||
self.fp.seek(offset)
|
||||
return child_images
|
||||
|
||||
def get_format_mimetype(self) -> str | None:
|
||||
if self.custom_mimetype:
|
||||
return self.custom_mimetype
|
||||
if self.format is not None:
|
||||
return Image.MIME.get(self.format.upper())
|
||||
return None
|
||||
|
||||
def __getstate__(self) -> list[Any]:
|
||||
return super().__getstate__() + [self.filename]
|
||||
|
||||
def __setstate__(self, state: list[Any]) -> None:
|
||||
self.tile = []
|
||||
if len(state) > 5:
|
||||
self.filename = state[5]
|
||||
super().__setstate__(state)
|
||||
|
||||
def verify(self) -> None:
|
||||
"""Check file integrity"""
|
||||
|
||||
# raise exception if something's wrong. must be called
|
||||
# directly after open, and closes file when finished.
|
||||
if self._exclusive_fp:
|
||||
self.fp.close()
|
||||
self.fp = None
|
||||
|
||||
def load(self) -> Image.core.PixelAccess | None:
|
||||
"""Load image data based on tile list"""
|
||||
|
||||
if not self.tile and self._im is None:
|
||||
msg = "cannot load this image"
|
||||
raise OSError(msg)
|
||||
|
||||
pixel = Image.Image.load(self)
|
||||
if not self.tile:
|
||||
return pixel
|
||||
|
||||
self.map: mmap.mmap | None = None
|
||||
use_mmap = self.filename and len(self.tile) == 1
|
||||
|
||||
readonly = 0
|
||||
|
||||
# look for read/seek overrides
|
||||
if hasattr(self, "load_read"):
|
||||
read = self.load_read
|
||||
# don't use mmap if there are custom read/seek functions
|
||||
use_mmap = False
|
||||
else:
|
||||
read = self.fp.read
|
||||
|
||||
if hasattr(self, "load_seek"):
|
||||
seek = self.load_seek
|
||||
use_mmap = False
|
||||
else:
|
||||
seek = self.fp.seek
|
||||
|
||||
if use_mmap:
|
||||
# try memory mapping
|
||||
decoder_name, extents, offset, args = self.tile[0]
|
||||
if isinstance(args, str):
|
||||
args = (args, 0, 1)
|
||||
if (
|
||||
decoder_name == "raw"
|
||||
and isinstance(args, tuple)
|
||||
and len(args) >= 3
|
||||
and args[0] == self.mode
|
||||
and args[0] in Image._MAPMODES
|
||||
):
|
||||
if offset < 0:
|
||||
msg = "Tile offset cannot be negative"
|
||||
raise ValueError(msg)
|
||||
try:
|
||||
# use mmap, if possible
|
||||
import mmap
|
||||
|
||||
with open(self.filename) as fp:
|
||||
self.map = mmap.mmap(fp.fileno(), 0, access=mmap.ACCESS_READ)
|
||||
if offset + self.size[1] * args[1] > self.map.size():
|
||||
msg = "buffer is not large enough"
|
||||
raise OSError(msg)
|
||||
self.im = Image.core.map_buffer(
|
||||
self.map, self.size, decoder_name, offset, args
|
||||
)
|
||||
readonly = 1
|
||||
# After trashing self.im,
|
||||
# we might need to reload the palette data.
|
||||
if self.palette:
|
||||
self.palette.dirty = 1
|
||||
except (AttributeError, OSError, ImportError):
|
||||
self.map = None
|
||||
|
||||
self.load_prepare()
|
||||
err_code = -3 # initialize to unknown error
|
||||
if not self.map:
|
||||
# sort tiles in file order
|
||||
self.tile.sort(key=_tilesort)
|
||||
|
||||
# FIXME: This is a hack to handle TIFF's JpegTables tag.
|
||||
prefix = getattr(self, "tile_prefix", b"")
|
||||
|
||||
# Remove consecutive duplicates that only differ by their offset
|
||||
self.tile = [
|
||||
list(tiles)[-1]
|
||||
for _, tiles in itertools.groupby(
|
||||
self.tile, lambda tile: (tile[0], tile[1], tile[3])
|
||||
)
|
||||
]
|
||||
for i, (decoder_name, extents, offset, args) in enumerate(self.tile):
|
||||
seek(offset)
|
||||
decoder = Image._getdecoder(
|
||||
self.mode, decoder_name, args, self.decoderconfig
|
||||
)
|
||||
try:
|
||||
decoder.setimage(self.im, extents)
|
||||
if decoder.pulls_fd:
|
||||
decoder.setfd(self.fp)
|
||||
err_code = decoder.decode(b"")[1]
|
||||
else:
|
||||
b = prefix
|
||||
while True:
|
||||
read_bytes = self.decodermaxblock
|
||||
if i + 1 < len(self.tile):
|
||||
next_offset = self.tile[i + 1].offset
|
||||
if next_offset > offset:
|
||||
read_bytes = next_offset - offset
|
||||
try:
|
||||
s = read(read_bytes)
|
||||
except (IndexError, struct.error) as e:
|
||||
# truncated png/gif
|
||||
if LOAD_TRUNCATED_IMAGES:
|
||||
break
|
||||
else:
|
||||
msg = "image file is truncated"
|
||||
raise OSError(msg) from e
|
||||
|
||||
if not s: # truncated jpeg
|
||||
if LOAD_TRUNCATED_IMAGES:
|
||||
break
|
||||
else:
|
||||
msg = (
|
||||
"image file is truncated "
|
||||
f"({len(b)} bytes not processed)"
|
||||
)
|
||||
raise OSError(msg)
|
||||
|
||||
b = b + s
|
||||
n, err_code = decoder.decode(b)
|
||||
if n < 0:
|
||||
break
|
||||
b = b[n:]
|
||||
finally:
|
||||
# Need to cleanup here to prevent leaks
|
||||
decoder.cleanup()
|
||||
|
||||
self.tile = []
|
||||
self.readonly = readonly
|
||||
|
||||
self.load_end()
|
||||
|
||||
if self._exclusive_fp and self._close_exclusive_fp_after_loading:
|
||||
self.fp.close()
|
||||
self.fp = None
|
||||
|
||||
if not self.map and not LOAD_TRUNCATED_IMAGES and err_code < 0:
|
||||
# still raised if decoder fails to return anything
|
||||
raise _get_oserror(err_code, encoder=False)
|
||||
|
||||
return Image.Image.load(self)
|
||||
|
||||
def load_prepare(self) -> None:
|
||||
# create image memory if necessary
|
||||
if self._im is None:
|
||||
self.im = Image.core.new(self.mode, self.size)
|
||||
# create palette (optional)
|
||||
if self.mode == "P":
|
||||
Image.Image.load(self)
|
||||
|
||||
def load_end(self) -> None:
|
||||
# may be overridden
|
||||
pass
|
||||
|
||||
# may be defined for contained formats
|
||||
# def load_seek(self, pos: int) -> None:
|
||||
# pass
|
||||
|
||||
# may be defined for blocked formats (e.g. PNG)
|
||||
# def load_read(self, read_bytes: int) -> bytes:
|
||||
# pass
|
||||
|
||||
def _seek_check(self, frame: int) -> bool:
|
||||
if (
|
||||
frame < self._min_frame
|
||||
# Only check upper limit on frames if additional seek operations
|
||||
# are not required to do so
|
||||
or (
|
||||
not (hasattr(self, "_n_frames") and self._n_frames is None)
|
||||
and frame >= getattr(self, "n_frames") + self._min_frame
|
||||
)
|
||||
):
|
||||
msg = "attempt to seek outside sequence"
|
||||
raise EOFError(msg)
|
||||
|
||||
return self.tell() != frame
|
||||
|
||||
|
||||
class StubHandler(abc.ABC):
|
||||
def open(self, im: StubImageFile) -> None:
|
||||
pass
|
||||
|
||||
@abc.abstractmethod
|
||||
def load(self, im: StubImageFile) -> Image.Image:
|
||||
pass
|
||||
|
||||
|
||||
class StubImageFile(ImageFile, metaclass=abc.ABCMeta):
|
||||
"""
|
||||
Base class for stub image loaders.
|
||||
|
||||
A stub loader is an image loader that can identify files of a
|
||||
certain format, but relies on external code to load the file.
|
||||
"""
|
||||
|
||||
@abc.abstractmethod
|
||||
def _open(self) -> None:
|
||||
pass
|
||||
|
||||
def load(self) -> Image.core.PixelAccess | None:
|
||||
loader = self._load()
|
||||
if loader is None:
|
||||
msg = f"cannot find loader for this {self.format} file"
|
||||
raise OSError(msg)
|
||||
image = loader.load(self)
|
||||
assert image is not None
|
||||
# become the other object (!)
|
||||
self.__class__ = image.__class__ # type: ignore[assignment]
|
||||
self.__dict__ = image.__dict__
|
||||
return image.load()
|
||||
|
||||
@abc.abstractmethod
|
||||
def _load(self) -> StubHandler | None:
|
||||
"""(Hook) Find actual image loader."""
|
||||
pass
|
||||
|
||||
|
||||
class Parser:
|
||||
"""
|
||||
Incremental image parser. This class implements the standard
|
||||
feed/close consumer interface.
|
||||
"""
|
||||
|
||||
incremental = None
|
||||
image: Image.Image | None = None
|
||||
data: bytes | None = None
|
||||
decoder: Image.core.ImagingDecoder | PyDecoder | None = None
|
||||
offset = 0
|
||||
finished = 0
|
||||
|
||||
def reset(self) -> None:
|
||||
"""
|
||||
(Consumer) Reset the parser. Note that you can only call this
|
||||
method immediately after you've created a parser; parser
|
||||
instances cannot be reused.
|
||||
"""
|
||||
assert self.data is None, "cannot reuse parsers"
|
||||
|
||||
def feed(self, data: bytes) -> None:
|
||||
"""
|
||||
(Consumer) Feed data to the parser.
|
||||
|
||||
:param data: A string buffer.
|
||||
:exception OSError: If the parser failed to parse the image file.
|
||||
"""
|
||||
# collect data
|
||||
|
||||
if self.finished:
|
||||
return
|
||||
|
||||
if self.data is None:
|
||||
self.data = data
|
||||
else:
|
||||
self.data = self.data + data
|
||||
|
||||
# parse what we have
|
||||
if self.decoder:
|
||||
if self.offset > 0:
|
||||
# skip header
|
||||
skip = min(len(self.data), self.offset)
|
||||
self.data = self.data[skip:]
|
||||
self.offset = self.offset - skip
|
||||
if self.offset > 0 or not self.data:
|
||||
return
|
||||
|
||||
n, e = self.decoder.decode(self.data)
|
||||
|
||||
if n < 0:
|
||||
# end of stream
|
||||
self.data = None
|
||||
self.finished = 1
|
||||
if e < 0:
|
||||
# decoding error
|
||||
self.image = None
|
||||
raise _get_oserror(e, encoder=False)
|
||||
else:
|
||||
# end of image
|
||||
return
|
||||
self.data = self.data[n:]
|
||||
|
||||
elif self.image:
|
||||
# if we end up here with no decoder, this file cannot
|
||||
# be incrementally parsed. wait until we've gotten all
|
||||
# available data
|
||||
pass
|
||||
|
||||
else:
|
||||
# attempt to open this file
|
||||
try:
|
||||
with io.BytesIO(self.data) as fp:
|
||||
im = Image.open(fp)
|
||||
except OSError:
|
||||
pass # not enough data
|
||||
else:
|
||||
flag = hasattr(im, "load_seek") or hasattr(im, "load_read")
|
||||
if flag or len(im.tile) != 1:
|
||||
# custom load code, or multiple tiles
|
||||
self.decode = None
|
||||
else:
|
||||
# initialize decoder
|
||||
im.load_prepare()
|
||||
d, e, o, a = im.tile[0]
|
||||
im.tile = []
|
||||
self.decoder = Image._getdecoder(im.mode, d, a, im.decoderconfig)
|
||||
self.decoder.setimage(im.im, e)
|
||||
|
||||
# calculate decoder offset
|
||||
self.offset = o
|
||||
if self.offset <= len(self.data):
|
||||
self.data = self.data[self.offset :]
|
||||
self.offset = 0
|
||||
|
||||
self.image = im
|
||||
|
||||
def __enter__(self) -> Parser:
|
||||
return self
|
||||
|
||||
def __exit__(self, *args: object) -> None:
|
||||
self.close()
|
||||
|
||||
def close(self) -> Image.Image:
|
||||
"""
|
||||
(Consumer) Close the stream.
|
||||
|
||||
:returns: An image object.
|
||||
:exception OSError: If the parser failed to parse the image file either
|
||||
because it cannot be identified or cannot be
|
||||
decoded.
|
||||
"""
|
||||
# finish decoding
|
||||
if self.decoder:
|
||||
# get rid of what's left in the buffers
|
||||
self.feed(b"")
|
||||
self.data = self.decoder = None
|
||||
if not self.finished:
|
||||
msg = "image was incomplete"
|
||||
raise OSError(msg)
|
||||
if not self.image:
|
||||
msg = "cannot parse this image"
|
||||
raise OSError(msg)
|
||||
if self.data:
|
||||
# incremental parsing not possible; reopen the file
|
||||
# not that we have all data
|
||||
with io.BytesIO(self.data) as fp:
|
||||
try:
|
||||
self.image = Image.open(fp)
|
||||
finally:
|
||||
self.image.load()
|
||||
return self.image
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], tile: list[_Tile], bufsize: int = 0) -> None:
|
||||
"""Helper to save image based on tile list
|
||||
|
||||
:param im: Image object.
|
||||
:param fp: File object.
|
||||
:param tile: Tile list.
|
||||
:param bufsize: Optional buffer size
|
||||
"""
|
||||
|
||||
im.load()
|
||||
if not hasattr(im, "encoderconfig"):
|
||||
im.encoderconfig = ()
|
||||
tile.sort(key=_tilesort)
|
||||
# FIXME: make MAXBLOCK a configuration parameter
|
||||
# It would be great if we could have the encoder specify what it needs
|
||||
# But, it would need at least the image size in most cases. RawEncode is
|
||||
# a tricky case.
|
||||
bufsize = max(MAXBLOCK, bufsize, im.size[0] * 4) # see RawEncode.c
|
||||
try:
|
||||
fh = fp.fileno()
|
||||
fp.flush()
|
||||
_encode_tile(im, fp, tile, bufsize, fh)
|
||||
except (AttributeError, io.UnsupportedOperation) as exc:
|
||||
_encode_tile(im, fp, tile, bufsize, None, exc)
|
||||
if hasattr(fp, "flush"):
|
||||
fp.flush()
|
||||
|
||||
|
||||
def _encode_tile(
|
||||
im: Image.Image,
|
||||
fp: IO[bytes],
|
||||
tile: list[_Tile],
|
||||
bufsize: int,
|
||||
fh: int | None,
|
||||
exc: BaseException | None = None,
|
||||
) -> None:
|
||||
for encoder_name, extents, offset, args in tile:
|
||||
if offset > 0:
|
||||
fp.seek(offset)
|
||||
encoder = Image._getencoder(im.mode, encoder_name, args, im.encoderconfig)
|
||||
try:
|
||||
encoder.setimage(im.im, extents)
|
||||
if encoder.pushes_fd:
|
||||
encoder.setfd(fp)
|
||||
errcode = encoder.encode_to_pyfd()[1]
|
||||
else:
|
||||
if exc:
|
||||
# compress to Python file-compatible object
|
||||
while True:
|
||||
errcode, data = encoder.encode(bufsize)[1:]
|
||||
fp.write(data)
|
||||
if errcode:
|
||||
break
|
||||
else:
|
||||
# slight speedup: compress to real file object
|
||||
assert fh is not None
|
||||
errcode = encoder.encode_to_file(fh, bufsize)
|
||||
if errcode < 0:
|
||||
raise _get_oserror(errcode, encoder=True) from exc
|
||||
finally:
|
||||
encoder.cleanup()
|
||||
|
||||
|
||||
def _safe_read(fp: IO[bytes], size: int) -> bytes:
|
||||
"""
|
||||
Reads large blocks in a safe way. Unlike fp.read(n), this function
|
||||
doesn't trust the user. If the requested size is larger than
|
||||
SAFEBLOCK, the file is read block by block.
|
||||
|
||||
:param fp: File handle. Must implement a <b>read</b> method.
|
||||
:param size: Number of bytes to read.
|
||||
:returns: A string containing <i>size</i> bytes of data.
|
||||
|
||||
Raises an OSError if the file is truncated and the read cannot be completed
|
||||
|
||||
"""
|
||||
if size <= 0:
|
||||
return b""
|
||||
if size <= SAFEBLOCK:
|
||||
data = fp.read(size)
|
||||
if len(data) < size:
|
||||
msg = "Truncated File Read"
|
||||
raise OSError(msg)
|
||||
return data
|
||||
blocks: list[bytes] = []
|
||||
remaining_size = size
|
||||
while remaining_size > 0:
|
||||
block = fp.read(min(remaining_size, SAFEBLOCK))
|
||||
if not block:
|
||||
break
|
||||
blocks.append(block)
|
||||
remaining_size -= len(block)
|
||||
if sum(len(block) for block in blocks) < size:
|
||||
msg = "Truncated File Read"
|
||||
raise OSError(msg)
|
||||
return b"".join(blocks)
|
||||
|
||||
|
||||
class PyCodecState:
|
||||
def __init__(self) -> None:
|
||||
self.xsize = 0
|
||||
self.ysize = 0
|
||||
self.xoff = 0
|
||||
self.yoff = 0
|
||||
|
||||
def extents(self) -> tuple[int, int, int, int]:
|
||||
return self.xoff, self.yoff, self.xoff + self.xsize, self.yoff + self.ysize
|
||||
|
||||
|
||||
class PyCodec:
|
||||
fd: IO[bytes] | None
|
||||
|
||||
def __init__(self, mode: str, *args: Any) -> None:
|
||||
self.im: Image.core.ImagingCore | None = None
|
||||
self.state = PyCodecState()
|
||||
self.fd = None
|
||||
self.mode = mode
|
||||
self.init(args)
|
||||
|
||||
def init(self, args: tuple[Any, ...]) -> None:
|
||||
"""
|
||||
Override to perform codec specific initialization
|
||||
|
||||
:param args: Tuple of arg items from the tile entry
|
||||
:returns: None
|
||||
"""
|
||||
self.args = args
|
||||
|
||||
def cleanup(self) -> None:
|
||||
"""
|
||||
Override to perform codec specific cleanup
|
||||
|
||||
:returns: None
|
||||
"""
|
||||
pass
|
||||
|
||||
def setfd(self, fd: IO[bytes]) -> None:
|
||||
"""
|
||||
Called from ImageFile to set the Python file-like object
|
||||
|
||||
:param fd: A Python file-like object
|
||||
:returns: None
|
||||
"""
|
||||
self.fd = fd
|
||||
|
||||
def setimage(
|
||||
self,
|
||||
im: Image.core.ImagingCore,
|
||||
extents: tuple[int, int, int, int] | None = None,
|
||||
) -> None:
|
||||
"""
|
||||
Called from ImageFile to set the core output image for the codec
|
||||
|
||||
:param im: A core image object
|
||||
:param extents: a 4 tuple of (x0, y0, x1, y1) defining the rectangle
|
||||
for this tile
|
||||
:returns: None
|
||||
"""
|
||||
|
||||
# following c code
|
||||
self.im = im
|
||||
|
||||
if extents:
|
||||
(x0, y0, x1, y1) = extents
|
||||
else:
|
||||
(x0, y0, x1, y1) = (0, 0, 0, 0)
|
||||
|
||||
if x0 == 0 and x1 == 0:
|
||||
self.state.xsize, self.state.ysize = self.im.size
|
||||
else:
|
||||
self.state.xoff = x0
|
||||
self.state.yoff = y0
|
||||
self.state.xsize = x1 - x0
|
||||
self.state.ysize = y1 - y0
|
||||
|
||||
if self.state.xsize <= 0 or self.state.ysize <= 0:
|
||||
msg = "Size cannot be negative"
|
||||
raise ValueError(msg)
|
||||
|
||||
if (
|
||||
self.state.xsize + self.state.xoff > self.im.size[0]
|
||||
or self.state.ysize + self.state.yoff > self.im.size[1]
|
||||
):
|
||||
msg = "Tile cannot extend outside image"
|
||||
raise ValueError(msg)
|
||||
|
||||
|
||||
class PyDecoder(PyCodec):
|
||||
"""
|
||||
Python implementation of a format decoder. Override this class and
|
||||
add the decoding logic in the :meth:`decode` method.
|
||||
|
||||
See :ref:`Writing Your Own File Codec in Python<file-codecs-py>`
|
||||
"""
|
||||
|
||||
_pulls_fd = False
|
||||
|
||||
@property
|
||||
def pulls_fd(self) -> bool:
|
||||
return self._pulls_fd
|
||||
|
||||
def decode(self, buffer: bytes | Image.SupportsArrayInterface) -> tuple[int, int]:
|
||||
"""
|
||||
Override to perform the decoding process.
|
||||
|
||||
:param buffer: A bytes object with the data to be decoded.
|
||||
:returns: A tuple of ``(bytes consumed, errcode)``.
|
||||
If finished with decoding return -1 for the bytes consumed.
|
||||
Err codes are from :data:`.ImageFile.ERRORS`.
|
||||
"""
|
||||
msg = "unavailable in base decoder"
|
||||
raise NotImplementedError(msg)
|
||||
|
||||
def set_as_raw(
|
||||
self, data: bytes, rawmode: str | None = None, extra: tuple[Any, ...] = ()
|
||||
) -> None:
|
||||
"""
|
||||
Convenience method to set the internal image from a stream of raw data
|
||||
|
||||
:param data: Bytes to be set
|
||||
:param rawmode: The rawmode to be used for the decoder.
|
||||
If not specified, it will default to the mode of the image
|
||||
:param extra: Extra arguments for the decoder.
|
||||
:returns: None
|
||||
"""
|
||||
|
||||
if not rawmode:
|
||||
rawmode = self.mode
|
||||
d = Image._getdecoder(self.mode, "raw", rawmode, extra)
|
||||
assert self.im is not None
|
||||
d.setimage(self.im, self.state.extents())
|
||||
s = d.decode(data)
|
||||
|
||||
if s[0] >= 0:
|
||||
msg = "not enough image data"
|
||||
raise ValueError(msg)
|
||||
if s[1] != 0:
|
||||
msg = "cannot decode image data"
|
||||
raise ValueError(msg)
|
||||
|
||||
|
||||
class PyEncoder(PyCodec):
|
||||
"""
|
||||
Python implementation of a format encoder. Override this class and
|
||||
add the decoding logic in the :meth:`encode` method.
|
||||
|
||||
See :ref:`Writing Your Own File Codec in Python<file-codecs-py>`
|
||||
"""
|
||||
|
||||
_pushes_fd = False
|
||||
|
||||
@property
|
||||
def pushes_fd(self) -> bool:
|
||||
return self._pushes_fd
|
||||
|
||||
def encode(self, bufsize: int) -> tuple[int, int, bytes]:
|
||||
"""
|
||||
Override to perform the encoding process.
|
||||
|
||||
:param bufsize: Buffer size.
|
||||
:returns: A tuple of ``(bytes encoded, errcode, bytes)``.
|
||||
If finished with encoding return 1 for the error code.
|
||||
Err codes are from :data:`.ImageFile.ERRORS`.
|
||||
"""
|
||||
msg = "unavailable in base encoder"
|
||||
raise NotImplementedError(msg)
|
||||
|
||||
def encode_to_pyfd(self) -> tuple[int, int]:
|
||||
"""
|
||||
If ``pushes_fd`` is ``True``, then this method will be used,
|
||||
and ``encode()`` will only be called once.
|
||||
|
||||
:returns: A tuple of ``(bytes consumed, errcode)``.
|
||||
Err codes are from :data:`.ImageFile.ERRORS`.
|
||||
"""
|
||||
if not self.pushes_fd:
|
||||
return 0, -8 # bad configuration
|
||||
bytes_consumed, errcode, data = self.encode(0)
|
||||
if data:
|
||||
assert self.fd is not None
|
||||
self.fd.write(data)
|
||||
return bytes_consumed, errcode
|
||||
|
||||
def encode_to_file(self, fh: int, bufsize: int) -> int:
|
||||
"""
|
||||
:param fh: File handle.
|
||||
:param bufsize: Buffer size.
|
||||
|
||||
:returns: If finished successfully, return 0.
|
||||
Otherwise, return an error code. Err codes are from
|
||||
:data:`.ImageFile.ERRORS`.
|
||||
"""
|
||||
errcode = 0
|
||||
while errcode == 0:
|
||||
status, errcode, buf = self.encode(bufsize)
|
||||
if status > 0:
|
||||
os.write(fh, buf[status:])
|
||||
return errcode
|
||||
@ -0,0 +1,607 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# standard filters
|
||||
#
|
||||
# History:
|
||||
# 1995-11-27 fl Created
|
||||
# 2002-06-08 fl Added rank and mode filters
|
||||
# 2003-09-15 fl Fixed rank calculation in rank filter; added expand call
|
||||
#
|
||||
# Copyright (c) 1997-2003 by Secret Labs AB.
|
||||
# Copyright (c) 1995-2002 by Fredrik Lundh.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import abc
|
||||
import functools
|
||||
from collections.abc import Sequence
|
||||
from typing import cast
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from collections.abc import Callable
|
||||
from types import ModuleType
|
||||
from typing import Any
|
||||
|
||||
from . import _imaging
|
||||
from ._typing import NumpyArray
|
||||
|
||||
|
||||
class Filter(abc.ABC):
|
||||
@abc.abstractmethod
|
||||
def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
|
||||
pass
|
||||
|
||||
|
||||
class MultibandFilter(Filter):
|
||||
pass
|
||||
|
||||
|
||||
class BuiltinFilter(MultibandFilter):
|
||||
filterargs: tuple[Any, ...]
|
||||
|
||||
def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
|
||||
if image.mode == "P":
|
||||
msg = "cannot filter palette images"
|
||||
raise ValueError(msg)
|
||||
return image.filter(*self.filterargs)
|
||||
|
||||
|
||||
class Kernel(BuiltinFilter):
|
||||
"""
|
||||
Create a convolution kernel. This only supports 3x3 and 5x5 integer and floating
|
||||
point kernels.
|
||||
|
||||
Kernels can only be applied to "L" and "RGB" images.
|
||||
|
||||
:param size: Kernel size, given as (width, height). This must be (3,3) or (5,5).
|
||||
:param kernel: A sequence containing kernel weights. The kernel will be flipped
|
||||
vertically before being applied to the image.
|
||||
:param scale: Scale factor. If given, the result for each pixel is divided by this
|
||||
value. The default is the sum of the kernel weights.
|
||||
:param offset: Offset. If given, this value is added to the result, after it has
|
||||
been divided by the scale factor.
|
||||
"""
|
||||
|
||||
name = "Kernel"
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
size: tuple[int, int],
|
||||
kernel: Sequence[float],
|
||||
scale: float | None = None,
|
||||
offset: float = 0,
|
||||
) -> None:
|
||||
if scale is None:
|
||||
# default scale is sum of kernel
|
||||
scale = functools.reduce(lambda a, b: a + b, kernel)
|
||||
if size[0] * size[1] != len(kernel):
|
||||
msg = "not enough coefficients in kernel"
|
||||
raise ValueError(msg)
|
||||
self.filterargs = size, scale, offset, kernel
|
||||
|
||||
|
||||
class RankFilter(Filter):
|
||||
"""
|
||||
Create a rank filter. The rank filter sorts all pixels in
|
||||
a window of the given size, and returns the ``rank``'th value.
|
||||
|
||||
:param size: The kernel size, in pixels.
|
||||
:param rank: What pixel value to pick. Use 0 for a min filter,
|
||||
``size * size / 2`` for a median filter, ``size * size - 1``
|
||||
for a max filter, etc.
|
||||
"""
|
||||
|
||||
name = "Rank"
|
||||
|
||||
def __init__(self, size: int, rank: int) -> None:
|
||||
self.size = size
|
||||
self.rank = rank
|
||||
|
||||
def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
|
||||
if image.mode == "P":
|
||||
msg = "cannot filter palette images"
|
||||
raise ValueError(msg)
|
||||
image = image.expand(self.size // 2, self.size // 2)
|
||||
return image.rankfilter(self.size, self.rank)
|
||||
|
||||
|
||||
class MedianFilter(RankFilter):
|
||||
"""
|
||||
Create a median filter. Picks the median pixel value in a window with the
|
||||
given size.
|
||||
|
||||
:param size: The kernel size, in pixels.
|
||||
"""
|
||||
|
||||
name = "Median"
|
||||
|
||||
def __init__(self, size: int = 3) -> None:
|
||||
self.size = size
|
||||
self.rank = size * size // 2
|
||||
|
||||
|
||||
class MinFilter(RankFilter):
|
||||
"""
|
||||
Create a min filter. Picks the lowest pixel value in a window with the
|
||||
given size.
|
||||
|
||||
:param size: The kernel size, in pixels.
|
||||
"""
|
||||
|
||||
name = "Min"
|
||||
|
||||
def __init__(self, size: int = 3) -> None:
|
||||
self.size = size
|
||||
self.rank = 0
|
||||
|
||||
|
||||
class MaxFilter(RankFilter):
|
||||
"""
|
||||
Create a max filter. Picks the largest pixel value in a window with the
|
||||
given size.
|
||||
|
||||
:param size: The kernel size, in pixels.
|
||||
"""
|
||||
|
||||
name = "Max"
|
||||
|
||||
def __init__(self, size: int = 3) -> None:
|
||||
self.size = size
|
||||
self.rank = size * size - 1
|
||||
|
||||
|
||||
class ModeFilter(Filter):
|
||||
"""
|
||||
Create a mode filter. Picks the most frequent pixel value in a box with the
|
||||
given size. Pixel values that occur only once or twice are ignored; if no
|
||||
pixel value occurs more than twice, the original pixel value is preserved.
|
||||
|
||||
:param size: The kernel size, in pixels.
|
||||
"""
|
||||
|
||||
name = "Mode"
|
||||
|
||||
def __init__(self, size: int = 3) -> None:
|
||||
self.size = size
|
||||
|
||||
def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
|
||||
return image.modefilter(self.size)
|
||||
|
||||
|
||||
class GaussianBlur(MultibandFilter):
|
||||
"""Blurs the image with a sequence of extended box filters, which
|
||||
approximates a Gaussian kernel. For details on accuracy see
|
||||
<https://www.mia.uni-saarland.de/Publications/gwosdek-ssvm11.pdf>
|
||||
|
||||
:param radius: Standard deviation of the Gaussian kernel. Either a sequence of two
|
||||
numbers for x and y, or a single number for both.
|
||||
"""
|
||||
|
||||
name = "GaussianBlur"
|
||||
|
||||
def __init__(self, radius: float | Sequence[float] = 2) -> None:
|
||||
self.radius = radius
|
||||
|
||||
def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
|
||||
xy = self.radius
|
||||
if isinstance(xy, (int, float)):
|
||||
xy = (xy, xy)
|
||||
if xy == (0, 0):
|
||||
return image.copy()
|
||||
return image.gaussian_blur(xy)
|
||||
|
||||
|
||||
class BoxBlur(MultibandFilter):
|
||||
"""Blurs the image by setting each pixel to the average value of the pixels
|
||||
in a square box extending radius pixels in each direction.
|
||||
Supports float radius of arbitrary size. Uses an optimized implementation
|
||||
which runs in linear time relative to the size of the image
|
||||
for any radius value.
|
||||
|
||||
:param radius: Size of the box in a direction. Either a sequence of two numbers for
|
||||
x and y, or a single number for both.
|
||||
|
||||
Radius 0 does not blur, returns an identical image.
|
||||
Radius 1 takes 1 pixel in each direction, i.e. 9 pixels in total.
|
||||
"""
|
||||
|
||||
name = "BoxBlur"
|
||||
|
||||
def __init__(self, radius: float | Sequence[float]) -> None:
|
||||
xy = radius if isinstance(radius, (tuple, list)) else (radius, radius)
|
||||
if xy[0] < 0 or xy[1] < 0:
|
||||
msg = "radius must be >= 0"
|
||||
raise ValueError(msg)
|
||||
self.radius = radius
|
||||
|
||||
def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
|
||||
xy = self.radius
|
||||
if isinstance(xy, (int, float)):
|
||||
xy = (xy, xy)
|
||||
if xy == (0, 0):
|
||||
return image.copy()
|
||||
return image.box_blur(xy)
|
||||
|
||||
|
||||
class UnsharpMask(MultibandFilter):
|
||||
"""Unsharp mask filter.
|
||||
|
||||
See Wikipedia's entry on `digital unsharp masking`_ for an explanation of
|
||||
the parameters.
|
||||
|
||||
:param radius: Blur Radius
|
||||
:param percent: Unsharp strength, in percent
|
||||
:param threshold: Threshold controls the minimum brightness change that
|
||||
will be sharpened
|
||||
|
||||
.. _digital unsharp masking: https://en.wikipedia.org/wiki/Unsharp_masking#Digital_unsharp_masking
|
||||
|
||||
"""
|
||||
|
||||
name = "UnsharpMask"
|
||||
|
||||
def __init__(
|
||||
self, radius: float = 2, percent: int = 150, threshold: int = 3
|
||||
) -> None:
|
||||
self.radius = radius
|
||||
self.percent = percent
|
||||
self.threshold = threshold
|
||||
|
||||
def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
|
||||
return image.unsharp_mask(self.radius, self.percent, self.threshold)
|
||||
|
||||
|
||||
class BLUR(BuiltinFilter):
|
||||
name = "Blur"
|
||||
# fmt: off
|
||||
filterargs = (5, 5), 16, 0, (
|
||||
1, 1, 1, 1, 1,
|
||||
1, 0, 0, 0, 1,
|
||||
1, 0, 0, 0, 1,
|
||||
1, 0, 0, 0, 1,
|
||||
1, 1, 1, 1, 1,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class CONTOUR(BuiltinFilter):
|
||||
name = "Contour"
|
||||
# fmt: off
|
||||
filterargs = (3, 3), 1, 255, (
|
||||
-1, -1, -1,
|
||||
-1, 8, -1,
|
||||
-1, -1, -1,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class DETAIL(BuiltinFilter):
|
||||
name = "Detail"
|
||||
# fmt: off
|
||||
filterargs = (3, 3), 6, 0, (
|
||||
0, -1, 0,
|
||||
-1, 10, -1,
|
||||
0, -1, 0,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class EDGE_ENHANCE(BuiltinFilter):
|
||||
name = "Edge-enhance"
|
||||
# fmt: off
|
||||
filterargs = (3, 3), 2, 0, (
|
||||
-1, -1, -1,
|
||||
-1, 10, -1,
|
||||
-1, -1, -1,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class EDGE_ENHANCE_MORE(BuiltinFilter):
|
||||
name = "Edge-enhance More"
|
||||
# fmt: off
|
||||
filterargs = (3, 3), 1, 0, (
|
||||
-1, -1, -1,
|
||||
-1, 9, -1,
|
||||
-1, -1, -1,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class EMBOSS(BuiltinFilter):
|
||||
name = "Emboss"
|
||||
# fmt: off
|
||||
filterargs = (3, 3), 1, 128, (
|
||||
-1, 0, 0,
|
||||
0, 1, 0,
|
||||
0, 0, 0,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class FIND_EDGES(BuiltinFilter):
|
||||
name = "Find Edges"
|
||||
# fmt: off
|
||||
filterargs = (3, 3), 1, 0, (
|
||||
-1, -1, -1,
|
||||
-1, 8, -1,
|
||||
-1, -1, -1,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class SHARPEN(BuiltinFilter):
|
||||
name = "Sharpen"
|
||||
# fmt: off
|
||||
filterargs = (3, 3), 16, 0, (
|
||||
-2, -2, -2,
|
||||
-2, 32, -2,
|
||||
-2, -2, -2,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class SMOOTH(BuiltinFilter):
|
||||
name = "Smooth"
|
||||
# fmt: off
|
||||
filterargs = (3, 3), 13, 0, (
|
||||
1, 1, 1,
|
||||
1, 5, 1,
|
||||
1, 1, 1,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class SMOOTH_MORE(BuiltinFilter):
|
||||
name = "Smooth More"
|
||||
# fmt: off
|
||||
filterargs = (5, 5), 100, 0, (
|
||||
1, 1, 1, 1, 1,
|
||||
1, 5, 5, 5, 1,
|
||||
1, 5, 44, 5, 1,
|
||||
1, 5, 5, 5, 1,
|
||||
1, 1, 1, 1, 1,
|
||||
)
|
||||
# fmt: on
|
||||
|
||||
|
||||
class Color3DLUT(MultibandFilter):
|
||||
"""Three-dimensional color lookup table.
|
||||
|
||||
Transforms 3-channel pixels using the values of the channels as coordinates
|
||||
in the 3D lookup table and interpolating the nearest elements.
|
||||
|
||||
This method allows you to apply almost any color transformation
|
||||
in constant time by using pre-calculated decimated tables.
|
||||
|
||||
.. versionadded:: 5.2.0
|
||||
|
||||
:param size: Size of the table. One int or tuple of (int, int, int).
|
||||
Minimal size in any dimension is 2, maximum is 65.
|
||||
:param table: Flat lookup table. A list of ``channels * size**3``
|
||||
float elements or a list of ``size**3`` channels-sized
|
||||
tuples with floats. Channels are changed first,
|
||||
then first dimension, then second, then third.
|
||||
Value 0.0 corresponds lowest value of output, 1.0 highest.
|
||||
:param channels: Number of channels in the table. Could be 3 or 4.
|
||||
Default is 3.
|
||||
:param target_mode: A mode for the result image. Should have not less
|
||||
than ``channels`` channels. Default is ``None``,
|
||||
which means that mode wouldn't be changed.
|
||||
"""
|
||||
|
||||
name = "Color 3D LUT"
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
size: int | tuple[int, int, int],
|
||||
table: Sequence[float] | Sequence[Sequence[int]] | NumpyArray,
|
||||
channels: int = 3,
|
||||
target_mode: str | None = None,
|
||||
**kwargs: bool,
|
||||
) -> None:
|
||||
if channels not in (3, 4):
|
||||
msg = "Only 3 or 4 output channels are supported"
|
||||
raise ValueError(msg)
|
||||
self.size = size = self._check_size(size)
|
||||
self.channels = channels
|
||||
self.mode = target_mode
|
||||
|
||||
# Hidden flag `_copy_table=False` could be used to avoid extra copying
|
||||
# of the table if the table is specially made for the constructor.
|
||||
copy_table = kwargs.get("_copy_table", True)
|
||||
items = size[0] * size[1] * size[2]
|
||||
wrong_size = False
|
||||
|
||||
numpy: ModuleType | None = None
|
||||
if hasattr(table, "shape"):
|
||||
try:
|
||||
import numpy
|
||||
except ImportError:
|
||||
pass
|
||||
|
||||
if numpy and isinstance(table, numpy.ndarray):
|
||||
numpy_table: NumpyArray = table
|
||||
if copy_table:
|
||||
numpy_table = numpy_table.copy()
|
||||
|
||||
if numpy_table.shape in [
|
||||
(items * channels,),
|
||||
(items, channels),
|
||||
(size[2], size[1], size[0], channels),
|
||||
]:
|
||||
table = numpy_table.reshape(items * channels)
|
||||
else:
|
||||
wrong_size = True
|
||||
|
||||
else:
|
||||
if copy_table:
|
||||
table = list(table)
|
||||
|
||||
# Convert to a flat list
|
||||
if table and isinstance(table[0], (list, tuple)):
|
||||
raw_table = cast(Sequence[Sequence[int]], table)
|
||||
flat_table: list[int] = []
|
||||
for pixel in raw_table:
|
||||
if len(pixel) != channels:
|
||||
msg = (
|
||||
"The elements of the table should "
|
||||
f"have a length of {channels}."
|
||||
)
|
||||
raise ValueError(msg)
|
||||
flat_table.extend(pixel)
|
||||
table = flat_table
|
||||
|
||||
if wrong_size or len(table) != items * channels:
|
||||
msg = (
|
||||
"The table should have either channels * size**3 float items "
|
||||
"or size**3 items of channels-sized tuples with floats. "
|
||||
f"Table should be: {channels}x{size[0]}x{size[1]}x{size[2]}. "
|
||||
f"Actual length: {len(table)}"
|
||||
)
|
||||
raise ValueError(msg)
|
||||
self.table = table
|
||||
|
||||
@staticmethod
|
||||
def _check_size(size: Any) -> tuple[int, int, int]:
|
||||
try:
|
||||
_, _, _ = size
|
||||
except ValueError as e:
|
||||
msg = "Size should be either an integer or a tuple of three integers."
|
||||
raise ValueError(msg) from e
|
||||
except TypeError:
|
||||
size = (size, size, size)
|
||||
size = tuple(int(x) for x in size)
|
||||
for size_1d in size:
|
||||
if not 2 <= size_1d <= 65:
|
||||
msg = "Size should be in [2, 65] range."
|
||||
raise ValueError(msg)
|
||||
return size
|
||||
|
||||
@classmethod
|
||||
def generate(
|
||||
cls,
|
||||
size: int | tuple[int, int, int],
|
||||
callback: Callable[[float, float, float], tuple[float, ...]],
|
||||
channels: int = 3,
|
||||
target_mode: str | None = None,
|
||||
) -> Color3DLUT:
|
||||
"""Generates new LUT using provided callback.
|
||||
|
||||
:param size: Size of the table. Passed to the constructor.
|
||||
:param callback: Function with three parameters which correspond
|
||||
three color channels. Will be called ``size**3``
|
||||
times with values from 0.0 to 1.0 and should return
|
||||
a tuple with ``channels`` elements.
|
||||
:param channels: The number of channels which should return callback.
|
||||
:param target_mode: Passed to the constructor of the resulting
|
||||
lookup table.
|
||||
"""
|
||||
size_1d, size_2d, size_3d = cls._check_size(size)
|
||||
if channels not in (3, 4):
|
||||
msg = "Only 3 or 4 output channels are supported"
|
||||
raise ValueError(msg)
|
||||
|
||||
table: list[float] = [0] * (size_1d * size_2d * size_3d * channels)
|
||||
idx_out = 0
|
||||
for b in range(size_3d):
|
||||
for g in range(size_2d):
|
||||
for r in range(size_1d):
|
||||
table[idx_out : idx_out + channels] = callback(
|
||||
r / (size_1d - 1), g / (size_2d - 1), b / (size_3d - 1)
|
||||
)
|
||||
idx_out += channels
|
||||
|
||||
return cls(
|
||||
(size_1d, size_2d, size_3d),
|
||||
table,
|
||||
channels=channels,
|
||||
target_mode=target_mode,
|
||||
_copy_table=False,
|
||||
)
|
||||
|
||||
def transform(
|
||||
self,
|
||||
callback: Callable[..., tuple[float, ...]],
|
||||
with_normals: bool = False,
|
||||
channels: int | None = None,
|
||||
target_mode: str | None = None,
|
||||
) -> Color3DLUT:
|
||||
"""Transforms the table values using provided callback and returns
|
||||
a new LUT with altered values.
|
||||
|
||||
:param callback: A function which takes old lookup table values
|
||||
and returns a new set of values. The number
|
||||
of arguments which function should take is
|
||||
``self.channels`` or ``3 + self.channels``
|
||||
if ``with_normals`` flag is set.
|
||||
Should return a tuple of ``self.channels`` or
|
||||
``channels`` elements if it is set.
|
||||
:param with_normals: If true, ``callback`` will be called with
|
||||
coordinates in the color cube as the first
|
||||
three arguments. Otherwise, ``callback``
|
||||
will be called only with actual color values.
|
||||
:param channels: The number of channels in the resulting lookup table.
|
||||
:param target_mode: Passed to the constructor of the resulting
|
||||
lookup table.
|
||||
"""
|
||||
if channels not in (None, 3, 4):
|
||||
msg = "Only 3 or 4 output channels are supported"
|
||||
raise ValueError(msg)
|
||||
ch_in = self.channels
|
||||
ch_out = channels or ch_in
|
||||
size_1d, size_2d, size_3d = self.size
|
||||
|
||||
table: list[float] = [0] * (size_1d * size_2d * size_3d * ch_out)
|
||||
idx_in = 0
|
||||
idx_out = 0
|
||||
for b in range(size_3d):
|
||||
for g in range(size_2d):
|
||||
for r in range(size_1d):
|
||||
values = self.table[idx_in : idx_in + ch_in]
|
||||
if with_normals:
|
||||
values = callback(
|
||||
r / (size_1d - 1),
|
||||
g / (size_2d - 1),
|
||||
b / (size_3d - 1),
|
||||
*values,
|
||||
)
|
||||
else:
|
||||
values = callback(*values)
|
||||
table[idx_out : idx_out + ch_out] = values
|
||||
idx_in += ch_in
|
||||
idx_out += ch_out
|
||||
|
||||
return type(self)(
|
||||
self.size,
|
||||
table,
|
||||
channels=ch_out,
|
||||
target_mode=target_mode or self.mode,
|
||||
_copy_table=False,
|
||||
)
|
||||
|
||||
def __repr__(self) -> str:
|
||||
r = [
|
||||
f"{self.__class__.__name__} from {self.table.__class__.__name__}",
|
||||
"size={:d}x{:d}x{:d}".format(*self.size),
|
||||
f"channels={self.channels:d}",
|
||||
]
|
||||
if self.mode:
|
||||
r.append(f"target_mode={self.mode}")
|
||||
return "<{}>".format(" ".join(r))
|
||||
|
||||
def filter(self, image: _imaging.ImagingCore) -> _imaging.ImagingCore:
|
||||
from . import Image
|
||||
|
||||
return image.color_lut_3d(
|
||||
self.mode or image.mode,
|
||||
Image.Resampling.BILINEAR,
|
||||
self.channels,
|
||||
self.size,
|
||||
self.table,
|
||||
)
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,196 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# screen grabber
|
||||
#
|
||||
# History:
|
||||
# 2001-04-26 fl created
|
||||
# 2001-09-17 fl use builtin driver, if present
|
||||
# 2002-11-19 fl added grabclipboard support
|
||||
#
|
||||
# Copyright (c) 2001-2002 by Secret Labs AB
|
||||
# Copyright (c) 2001-2002 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import io
|
||||
import os
|
||||
import shutil
|
||||
import subprocess
|
||||
import sys
|
||||
import tempfile
|
||||
|
||||
from . import Image
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from . import ImageWin
|
||||
|
||||
|
||||
def grab(
|
||||
bbox: tuple[int, int, int, int] | None = None,
|
||||
include_layered_windows: bool = False,
|
||||
all_screens: bool = False,
|
||||
xdisplay: str | None = None,
|
||||
window: int | ImageWin.HWND | None = None,
|
||||
) -> Image.Image:
|
||||
im: Image.Image
|
||||
if xdisplay is None:
|
||||
if sys.platform == "darwin":
|
||||
fh, filepath = tempfile.mkstemp(".png")
|
||||
os.close(fh)
|
||||
args = ["screencapture"]
|
||||
if bbox:
|
||||
left, top, right, bottom = bbox
|
||||
args += ["-R", f"{left},{top},{right-left},{bottom-top}"]
|
||||
subprocess.call(args + ["-x", filepath])
|
||||
im = Image.open(filepath)
|
||||
im.load()
|
||||
os.unlink(filepath)
|
||||
if bbox:
|
||||
im_resized = im.resize((right - left, bottom - top))
|
||||
im.close()
|
||||
return im_resized
|
||||
return im
|
||||
elif sys.platform == "win32":
|
||||
if window is not None:
|
||||
all_screens = -1
|
||||
offset, size, data = Image.core.grabscreen_win32(
|
||||
include_layered_windows,
|
||||
all_screens,
|
||||
int(window) if window is not None else 0,
|
||||
)
|
||||
im = Image.frombytes(
|
||||
"RGB",
|
||||
size,
|
||||
data,
|
||||
# RGB, 32-bit line padding, origin lower left corner
|
||||
"raw",
|
||||
"BGR",
|
||||
(size[0] * 3 + 3) & -4,
|
||||
-1,
|
||||
)
|
||||
if bbox:
|
||||
x0, y0 = offset
|
||||
left, top, right, bottom = bbox
|
||||
im = im.crop((left - x0, top - y0, right - x0, bottom - y0))
|
||||
return im
|
||||
# Cast to Optional[str] needed for Windows and macOS.
|
||||
display_name: str | None = xdisplay
|
||||
try:
|
||||
if not Image.core.HAVE_XCB:
|
||||
msg = "Pillow was built without XCB support"
|
||||
raise OSError(msg)
|
||||
size, data = Image.core.grabscreen_x11(display_name)
|
||||
except OSError:
|
||||
if display_name is None and sys.platform not in ("darwin", "win32"):
|
||||
if shutil.which("gnome-screenshot"):
|
||||
args = ["gnome-screenshot", "-f"]
|
||||
elif shutil.which("grim"):
|
||||
args = ["grim"]
|
||||
elif shutil.which("spectacle"):
|
||||
args = ["spectacle", "-n", "-b", "-f", "-o"]
|
||||
else:
|
||||
raise
|
||||
fh, filepath = tempfile.mkstemp(".png")
|
||||
os.close(fh)
|
||||
subprocess.call(args + [filepath])
|
||||
im = Image.open(filepath)
|
||||
im.load()
|
||||
os.unlink(filepath)
|
||||
if bbox:
|
||||
im_cropped = im.crop(bbox)
|
||||
im.close()
|
||||
return im_cropped
|
||||
return im
|
||||
else:
|
||||
raise
|
||||
else:
|
||||
im = Image.frombytes("RGB", size, data, "raw", "BGRX", size[0] * 4, 1)
|
||||
if bbox:
|
||||
im = im.crop(bbox)
|
||||
return im
|
||||
|
||||
|
||||
def grabclipboard() -> Image.Image | list[str] | None:
|
||||
if sys.platform == "darwin":
|
||||
p = subprocess.run(
|
||||
["osascript", "-e", "get the clipboard as «class PNGf»"],
|
||||
capture_output=True,
|
||||
)
|
||||
if p.returncode != 0:
|
||||
return None
|
||||
|
||||
import binascii
|
||||
|
||||
data = io.BytesIO(binascii.unhexlify(p.stdout[11:-3]))
|
||||
return Image.open(data)
|
||||
elif sys.platform == "win32":
|
||||
fmt, data = Image.core.grabclipboard_win32()
|
||||
if fmt == "file": # CF_HDROP
|
||||
import struct
|
||||
|
||||
o = struct.unpack_from("I", data)[0]
|
||||
if data[16] == 0:
|
||||
files = data[o:].decode("mbcs").split("\0")
|
||||
else:
|
||||
files = data[o:].decode("utf-16le").split("\0")
|
||||
return files[: files.index("")]
|
||||
if isinstance(data, bytes):
|
||||
data = io.BytesIO(data)
|
||||
if fmt == "png":
|
||||
from . import PngImagePlugin
|
||||
|
||||
return PngImagePlugin.PngImageFile(data)
|
||||
elif fmt == "DIB":
|
||||
from . import BmpImagePlugin
|
||||
|
||||
return BmpImagePlugin.DibImageFile(data)
|
||||
return None
|
||||
else:
|
||||
if os.getenv("WAYLAND_DISPLAY"):
|
||||
session_type = "wayland"
|
||||
elif os.getenv("DISPLAY"):
|
||||
session_type = "x11"
|
||||
else: # Session type check failed
|
||||
session_type = None
|
||||
|
||||
if shutil.which("wl-paste") and session_type in ("wayland", None):
|
||||
args = ["wl-paste", "-t", "image"]
|
||||
elif shutil.which("xclip") and session_type in ("x11", None):
|
||||
args = ["xclip", "-selection", "clipboard", "-t", "image/png", "-o"]
|
||||
else:
|
||||
msg = "wl-paste or xclip is required for ImageGrab.grabclipboard() on Linux"
|
||||
raise NotImplementedError(msg)
|
||||
|
||||
p = subprocess.run(args, capture_output=True)
|
||||
if p.returncode != 0:
|
||||
err = p.stderr
|
||||
for silent_error in [
|
||||
# wl-paste, when the clipboard is empty
|
||||
b"Nothing is copied",
|
||||
# Ubuntu/Debian wl-paste, when the clipboard is empty
|
||||
b"No selection",
|
||||
# Ubuntu/Debian wl-paste, when an image isn't available
|
||||
b"No suitable type of content copied",
|
||||
# wl-paste or Ubuntu/Debian xclip, when an image isn't available
|
||||
b" not available",
|
||||
# xclip, when an image isn't available
|
||||
b"cannot convert ",
|
||||
# xclip, when the clipboard isn't initialized
|
||||
b"xclip: Error: There is no owner for the ",
|
||||
]:
|
||||
if silent_error in err:
|
||||
return None
|
||||
msg = f"{args[0]} error"
|
||||
if err:
|
||||
msg += f": {err.strip().decode()}"
|
||||
raise ChildProcessError(msg)
|
||||
|
||||
data = io.BytesIO(p.stdout)
|
||||
im = Image.open(data)
|
||||
im.load()
|
||||
return im
|
||||
@ -0,0 +1,314 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# a simple math add-on for the Python Imaging Library
|
||||
#
|
||||
# History:
|
||||
# 1999-02-15 fl Original PIL Plus release
|
||||
# 2005-05-05 fl Simplified and cleaned up for PIL 1.1.6
|
||||
# 2005-09-12 fl Fixed int() and float() for Python 2.4.1
|
||||
#
|
||||
# Copyright (c) 1999-2005 by Secret Labs AB
|
||||
# Copyright (c) 2005 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import builtins
|
||||
|
||||
from . import Image, _imagingmath
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from collections.abc import Callable
|
||||
from types import CodeType
|
||||
from typing import Any
|
||||
|
||||
|
||||
class _Operand:
|
||||
"""Wraps an image operand, providing standard operators"""
|
||||
|
||||
def __init__(self, im: Image.Image):
|
||||
self.im = im
|
||||
|
||||
def __fixup(self, im1: _Operand | float) -> Image.Image:
|
||||
# convert image to suitable mode
|
||||
if isinstance(im1, _Operand):
|
||||
# argument was an image.
|
||||
if im1.im.mode in ("1", "L"):
|
||||
return im1.im.convert("I")
|
||||
elif im1.im.mode in ("I", "F"):
|
||||
return im1.im
|
||||
else:
|
||||
msg = f"unsupported mode: {im1.im.mode}"
|
||||
raise ValueError(msg)
|
||||
else:
|
||||
# argument was a constant
|
||||
if isinstance(im1, (int, float)) and self.im.mode in ("1", "L", "I"):
|
||||
return Image.new("I", self.im.size, im1)
|
||||
else:
|
||||
return Image.new("F", self.im.size, im1)
|
||||
|
||||
def apply(
|
||||
self,
|
||||
op: str,
|
||||
im1: _Operand | float,
|
||||
im2: _Operand | float | None = None,
|
||||
mode: str | None = None,
|
||||
) -> _Operand:
|
||||
im_1 = self.__fixup(im1)
|
||||
if im2 is None:
|
||||
# unary operation
|
||||
out = Image.new(mode or im_1.mode, im_1.size, None)
|
||||
try:
|
||||
op = getattr(_imagingmath, f"{op}_{im_1.mode}")
|
||||
except AttributeError as e:
|
||||
msg = f"bad operand type for '{op}'"
|
||||
raise TypeError(msg) from e
|
||||
_imagingmath.unop(op, out.getim(), im_1.getim())
|
||||
else:
|
||||
# binary operation
|
||||
im_2 = self.__fixup(im2)
|
||||
if im_1.mode != im_2.mode:
|
||||
# convert both arguments to floating point
|
||||
if im_1.mode != "F":
|
||||
im_1 = im_1.convert("F")
|
||||
if im_2.mode != "F":
|
||||
im_2 = im_2.convert("F")
|
||||
if im_1.size != im_2.size:
|
||||
# crop both arguments to a common size
|
||||
size = (
|
||||
min(im_1.size[0], im_2.size[0]),
|
||||
min(im_1.size[1], im_2.size[1]),
|
||||
)
|
||||
if im_1.size != size:
|
||||
im_1 = im_1.crop((0, 0) + size)
|
||||
if im_2.size != size:
|
||||
im_2 = im_2.crop((0, 0) + size)
|
||||
out = Image.new(mode or im_1.mode, im_1.size, None)
|
||||
try:
|
||||
op = getattr(_imagingmath, f"{op}_{im_1.mode}")
|
||||
except AttributeError as e:
|
||||
msg = f"bad operand type for '{op}'"
|
||||
raise TypeError(msg) from e
|
||||
_imagingmath.binop(op, out.getim(), im_1.getim(), im_2.getim())
|
||||
return _Operand(out)
|
||||
|
||||
# unary operators
|
||||
def __bool__(self) -> bool:
|
||||
# an image is "true" if it contains at least one non-zero pixel
|
||||
return self.im.getbbox() is not None
|
||||
|
||||
def __abs__(self) -> _Operand:
|
||||
return self.apply("abs", self)
|
||||
|
||||
def __pos__(self) -> _Operand:
|
||||
return self
|
||||
|
||||
def __neg__(self) -> _Operand:
|
||||
return self.apply("neg", self)
|
||||
|
||||
# binary operators
|
||||
def __add__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("add", self, other)
|
||||
|
||||
def __radd__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("add", other, self)
|
||||
|
||||
def __sub__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("sub", self, other)
|
||||
|
||||
def __rsub__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("sub", other, self)
|
||||
|
||||
def __mul__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("mul", self, other)
|
||||
|
||||
def __rmul__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("mul", other, self)
|
||||
|
||||
def __truediv__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("div", self, other)
|
||||
|
||||
def __rtruediv__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("div", other, self)
|
||||
|
||||
def __mod__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("mod", self, other)
|
||||
|
||||
def __rmod__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("mod", other, self)
|
||||
|
||||
def __pow__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("pow", self, other)
|
||||
|
||||
def __rpow__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("pow", other, self)
|
||||
|
||||
# bitwise
|
||||
def __invert__(self) -> _Operand:
|
||||
return self.apply("invert", self)
|
||||
|
||||
def __and__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("and", self, other)
|
||||
|
||||
def __rand__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("and", other, self)
|
||||
|
||||
def __or__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("or", self, other)
|
||||
|
||||
def __ror__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("or", other, self)
|
||||
|
||||
def __xor__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("xor", self, other)
|
||||
|
||||
def __rxor__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("xor", other, self)
|
||||
|
||||
def __lshift__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("lshift", self, other)
|
||||
|
||||
def __rshift__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("rshift", self, other)
|
||||
|
||||
# logical
|
||||
def __eq__(self, other: _Operand | float) -> _Operand: # type: ignore[override]
|
||||
return self.apply("eq", self, other)
|
||||
|
||||
def __ne__(self, other: _Operand | float) -> _Operand: # type: ignore[override]
|
||||
return self.apply("ne", self, other)
|
||||
|
||||
def __lt__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("lt", self, other)
|
||||
|
||||
def __le__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("le", self, other)
|
||||
|
||||
def __gt__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("gt", self, other)
|
||||
|
||||
def __ge__(self, other: _Operand | float) -> _Operand:
|
||||
return self.apply("ge", self, other)
|
||||
|
||||
|
||||
# conversions
|
||||
def imagemath_int(self: _Operand) -> _Operand:
|
||||
return _Operand(self.im.convert("I"))
|
||||
|
||||
|
||||
def imagemath_float(self: _Operand) -> _Operand:
|
||||
return _Operand(self.im.convert("F"))
|
||||
|
||||
|
||||
# logical
|
||||
def imagemath_equal(self: _Operand, other: _Operand | float | None) -> _Operand:
|
||||
return self.apply("eq", self, other, mode="I")
|
||||
|
||||
|
||||
def imagemath_notequal(self: _Operand, other: _Operand | float | None) -> _Operand:
|
||||
return self.apply("ne", self, other, mode="I")
|
||||
|
||||
|
||||
def imagemath_min(self: _Operand, other: _Operand | float | None) -> _Operand:
|
||||
return self.apply("min", self, other)
|
||||
|
||||
|
||||
def imagemath_max(self: _Operand, other: _Operand | float | None) -> _Operand:
|
||||
return self.apply("max", self, other)
|
||||
|
||||
|
||||
def imagemath_convert(self: _Operand, mode: str) -> _Operand:
|
||||
return _Operand(self.im.convert(mode))
|
||||
|
||||
|
||||
ops = {
|
||||
"int": imagemath_int,
|
||||
"float": imagemath_float,
|
||||
"equal": imagemath_equal,
|
||||
"notequal": imagemath_notequal,
|
||||
"min": imagemath_min,
|
||||
"max": imagemath_max,
|
||||
"convert": imagemath_convert,
|
||||
}
|
||||
|
||||
|
||||
def lambda_eval(expression: Callable[[dict[str, Any]], Any], **kw: Any) -> Any:
|
||||
"""
|
||||
Returns the result of an image function.
|
||||
|
||||
:py:mod:`~PIL.ImageMath` only supports single-layer images. To process multi-band
|
||||
images, use the :py:meth:`~PIL.Image.Image.split` method or
|
||||
:py:func:`~PIL.Image.merge` function.
|
||||
|
||||
:param expression: A function that receives a dictionary.
|
||||
:param **kw: Values to add to the function's dictionary.
|
||||
:return: The expression result. This is usually an image object, but can
|
||||
also be an integer, a floating point value, or a pixel tuple,
|
||||
depending on the expression.
|
||||
"""
|
||||
|
||||
args: dict[str, Any] = ops.copy()
|
||||
args.update(kw)
|
||||
for k, v in args.items():
|
||||
if isinstance(v, Image.Image):
|
||||
args[k] = _Operand(v)
|
||||
|
||||
out = expression(args)
|
||||
try:
|
||||
return out.im
|
||||
except AttributeError:
|
||||
return out
|
||||
|
||||
|
||||
def unsafe_eval(expression: str, **kw: Any) -> Any:
|
||||
"""
|
||||
Evaluates an image expression. This uses Python's ``eval()`` function to process
|
||||
the expression string, and carries the security risks of doing so. It is not
|
||||
recommended to process expressions without considering this.
|
||||
:py:meth:`~lambda_eval` is a more secure alternative.
|
||||
|
||||
:py:mod:`~PIL.ImageMath` only supports single-layer images. To process multi-band
|
||||
images, use the :py:meth:`~PIL.Image.Image.split` method or
|
||||
:py:func:`~PIL.Image.merge` function.
|
||||
|
||||
:param expression: A string containing a Python-style expression.
|
||||
:param **kw: Values to add to the evaluation context.
|
||||
:return: The evaluated expression. This is usually an image object, but can
|
||||
also be an integer, a floating point value, or a pixel tuple,
|
||||
depending on the expression.
|
||||
"""
|
||||
|
||||
# build execution namespace
|
||||
args: dict[str, Any] = ops.copy()
|
||||
for k in kw:
|
||||
if "__" in k or hasattr(builtins, k):
|
||||
msg = f"'{k}' not allowed"
|
||||
raise ValueError(msg)
|
||||
|
||||
args.update(kw)
|
||||
for k, v in args.items():
|
||||
if isinstance(v, Image.Image):
|
||||
args[k] = _Operand(v)
|
||||
|
||||
compiled_code = compile(expression, "<string>", "eval")
|
||||
|
||||
def scan(code: CodeType) -> None:
|
||||
for const in code.co_consts:
|
||||
if type(const) is type(compiled_code):
|
||||
scan(const)
|
||||
|
||||
for name in code.co_names:
|
||||
if name not in args and name != "abs":
|
||||
msg = f"'{name}' not allowed"
|
||||
raise ValueError(msg)
|
||||
|
||||
scan(compiled_code)
|
||||
out = builtins.eval(expression, {"__builtins": {"abs": abs}}, args)
|
||||
try:
|
||||
return out.im
|
||||
except AttributeError:
|
||||
return out
|
||||
@ -0,0 +1,85 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# standard mode descriptors
|
||||
#
|
||||
# History:
|
||||
# 2006-03-20 fl Added
|
||||
#
|
||||
# Copyright (c) 2006 by Secret Labs AB.
|
||||
# Copyright (c) 2006 by Fredrik Lundh.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import sys
|
||||
from functools import lru_cache
|
||||
from typing import NamedTuple
|
||||
|
||||
|
||||
class ModeDescriptor(NamedTuple):
|
||||
"""Wrapper for mode strings."""
|
||||
|
||||
mode: str
|
||||
bands: tuple[str, ...]
|
||||
basemode: str
|
||||
basetype: str
|
||||
typestr: str
|
||||
|
||||
def __str__(self) -> str:
|
||||
return self.mode
|
||||
|
||||
|
||||
@lru_cache
|
||||
def getmode(mode: str) -> ModeDescriptor:
|
||||
"""Gets a mode descriptor for the given mode."""
|
||||
endian = "<" if sys.byteorder == "little" else ">"
|
||||
|
||||
modes = {
|
||||
# core modes
|
||||
# Bits need to be extended to bytes
|
||||
"1": ("L", "L", ("1",), "|b1"),
|
||||
"L": ("L", "L", ("L",), "|u1"),
|
||||
"I": ("L", "I", ("I",), f"{endian}i4"),
|
||||
"F": ("L", "F", ("F",), f"{endian}f4"),
|
||||
"P": ("P", "L", ("P",), "|u1"),
|
||||
"RGB": ("RGB", "L", ("R", "G", "B"), "|u1"),
|
||||
"RGBX": ("RGB", "L", ("R", "G", "B", "X"), "|u1"),
|
||||
"RGBA": ("RGB", "L", ("R", "G", "B", "A"), "|u1"),
|
||||
"CMYK": ("RGB", "L", ("C", "M", "Y", "K"), "|u1"),
|
||||
"YCbCr": ("RGB", "L", ("Y", "Cb", "Cr"), "|u1"),
|
||||
# UNDONE - unsigned |u1i1i1
|
||||
"LAB": ("RGB", "L", ("L", "A", "B"), "|u1"),
|
||||
"HSV": ("RGB", "L", ("H", "S", "V"), "|u1"),
|
||||
# extra experimental modes
|
||||
"RGBa": ("RGB", "L", ("R", "G", "B", "a"), "|u1"),
|
||||
"LA": ("L", "L", ("L", "A"), "|u1"),
|
||||
"La": ("L", "L", ("L", "a"), "|u1"),
|
||||
"PA": ("RGB", "L", ("P", "A"), "|u1"),
|
||||
}
|
||||
if mode in modes:
|
||||
base_mode, base_type, bands, type_str = modes[mode]
|
||||
return ModeDescriptor(mode, bands, base_mode, base_type, type_str)
|
||||
|
||||
mapping_modes = {
|
||||
# I;16 == I;16L, and I;32 == I;32L
|
||||
"I;16": "<u2",
|
||||
"I;16S": "<i2",
|
||||
"I;16L": "<u2",
|
||||
"I;16LS": "<i2",
|
||||
"I;16B": ">u2",
|
||||
"I;16BS": ">i2",
|
||||
"I;16N": f"{endian}u2",
|
||||
"I;16NS": f"{endian}i2",
|
||||
"I;32": "<u4",
|
||||
"I;32B": ">u4",
|
||||
"I;32L": "<u4",
|
||||
"I;32S": "<i4",
|
||||
"I;32BS": ">i4",
|
||||
"I;32LS": "<i4",
|
||||
}
|
||||
|
||||
type_str = mapping_modes[mode]
|
||||
return ModeDescriptor(mode, ("I",), "L", "L", type_str)
|
||||
@ -0,0 +1,265 @@
|
||||
# A binary morphology add-on for the Python Imaging Library
|
||||
#
|
||||
# History:
|
||||
# 2014-06-04 Initial version.
|
||||
#
|
||||
# Copyright (c) 2014 Dov Grobgeld <dov.grobgeld@gmail.com>
|
||||
from __future__ import annotations
|
||||
|
||||
import re
|
||||
|
||||
from . import Image, _imagingmorph
|
||||
|
||||
LUT_SIZE = 1 << 9
|
||||
|
||||
# fmt: off
|
||||
ROTATION_MATRIX = [
|
||||
6, 3, 0,
|
||||
7, 4, 1,
|
||||
8, 5, 2,
|
||||
]
|
||||
MIRROR_MATRIX = [
|
||||
2, 1, 0,
|
||||
5, 4, 3,
|
||||
8, 7, 6,
|
||||
]
|
||||
# fmt: on
|
||||
|
||||
|
||||
class LutBuilder:
|
||||
"""A class for building a MorphLut from a descriptive language
|
||||
|
||||
The input patterns is a list of a strings sequences like these::
|
||||
|
||||
4:(...
|
||||
.1.
|
||||
111)->1
|
||||
|
||||
(whitespaces including linebreaks are ignored). The option 4
|
||||
describes a series of symmetry operations (in this case a
|
||||
4-rotation), the pattern is described by:
|
||||
|
||||
- . or X - Ignore
|
||||
- 1 - Pixel is on
|
||||
- 0 - Pixel is off
|
||||
|
||||
The result of the operation is described after "->" string.
|
||||
|
||||
The default is to return the current pixel value, which is
|
||||
returned if no other match is found.
|
||||
|
||||
Operations:
|
||||
|
||||
- 4 - 4 way rotation
|
||||
- N - Negate
|
||||
- 1 - Dummy op for no other operation (an op must always be given)
|
||||
- M - Mirroring
|
||||
|
||||
Example::
|
||||
|
||||
lb = LutBuilder(patterns = ["4:(... .1. 111)->1"])
|
||||
lut = lb.build_lut()
|
||||
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self, patterns: list[str] | None = None, op_name: str | None = None
|
||||
) -> None:
|
||||
if patterns is not None:
|
||||
self.patterns = patterns
|
||||
else:
|
||||
self.patterns = []
|
||||
self.lut: bytearray | None = None
|
||||
if op_name is not None:
|
||||
known_patterns = {
|
||||
"corner": ["1:(... ... ...)->0", "4:(00. 01. ...)->1"],
|
||||
"dilation4": ["4:(... .0. .1.)->1"],
|
||||
"dilation8": ["4:(... .0. .1.)->1", "4:(... .0. ..1)->1"],
|
||||
"erosion4": ["4:(... .1. .0.)->0"],
|
||||
"erosion8": ["4:(... .1. .0.)->0", "4:(... .1. ..0)->0"],
|
||||
"edge": [
|
||||
"1:(... ... ...)->0",
|
||||
"4:(.0. .1. ...)->1",
|
||||
"4:(01. .1. ...)->1",
|
||||
],
|
||||
}
|
||||
if op_name not in known_patterns:
|
||||
msg = f"Unknown pattern {op_name}!"
|
||||
raise Exception(msg)
|
||||
|
||||
self.patterns = known_patterns[op_name]
|
||||
|
||||
def add_patterns(self, patterns: list[str]) -> None:
|
||||
self.patterns += patterns
|
||||
|
||||
def build_default_lut(self) -> None:
|
||||
symbols = [0, 1]
|
||||
m = 1 << 4 # pos of current pixel
|
||||
self.lut = bytearray(symbols[(i & m) > 0] for i in range(LUT_SIZE))
|
||||
|
||||
def get_lut(self) -> bytearray | None:
|
||||
return self.lut
|
||||
|
||||
def _string_permute(self, pattern: str, permutation: list[int]) -> str:
|
||||
"""string_permute takes a pattern and a permutation and returns the
|
||||
string permuted according to the permutation list.
|
||||
"""
|
||||
assert len(permutation) == 9
|
||||
return "".join(pattern[p] for p in permutation)
|
||||
|
||||
def _pattern_permute(
|
||||
self, basic_pattern: str, options: str, basic_result: int
|
||||
) -> list[tuple[str, int]]:
|
||||
"""pattern_permute takes a basic pattern and its result and clones
|
||||
the pattern according to the modifications described in the $options
|
||||
parameter. It returns a list of all cloned patterns."""
|
||||
patterns = [(basic_pattern, basic_result)]
|
||||
|
||||
# rotations
|
||||
if "4" in options:
|
||||
res = patterns[-1][1]
|
||||
for i in range(4):
|
||||
patterns.append(
|
||||
(self._string_permute(patterns[-1][0], ROTATION_MATRIX), res)
|
||||
)
|
||||
# mirror
|
||||
if "M" in options:
|
||||
n = len(patterns)
|
||||
for pattern, res in patterns[:n]:
|
||||
patterns.append((self._string_permute(pattern, MIRROR_MATRIX), res))
|
||||
|
||||
# negate
|
||||
if "N" in options:
|
||||
n = len(patterns)
|
||||
for pattern, res in patterns[:n]:
|
||||
# Swap 0 and 1
|
||||
pattern = pattern.replace("0", "Z").replace("1", "0").replace("Z", "1")
|
||||
res = 1 - int(res)
|
||||
patterns.append((pattern, res))
|
||||
|
||||
return patterns
|
||||
|
||||
def build_lut(self) -> bytearray:
|
||||
"""Compile all patterns into a morphology lut.
|
||||
|
||||
TBD :Build based on (file) morphlut:modify_lut
|
||||
"""
|
||||
self.build_default_lut()
|
||||
assert self.lut is not None
|
||||
patterns = []
|
||||
|
||||
# Parse and create symmetries of the patterns strings
|
||||
for p in self.patterns:
|
||||
m = re.search(r"(\w):?\s*\((.+?)\)\s*->\s*(\d)", p.replace("\n", ""))
|
||||
if not m:
|
||||
msg = 'Syntax error in pattern "' + p + '"'
|
||||
raise Exception(msg)
|
||||
options = m.group(1)
|
||||
pattern = m.group(2)
|
||||
result = int(m.group(3))
|
||||
|
||||
# Get rid of spaces
|
||||
pattern = pattern.replace(" ", "").replace("\n", "")
|
||||
|
||||
patterns += self._pattern_permute(pattern, options, result)
|
||||
|
||||
# compile the patterns into regular expressions for speed
|
||||
compiled_patterns = []
|
||||
for pattern in patterns:
|
||||
p = pattern[0].replace(".", "X").replace("X", "[01]")
|
||||
compiled_patterns.append((re.compile(p), pattern[1]))
|
||||
|
||||
# Step through table and find patterns that match.
|
||||
# Note that all the patterns are searched. The last one
|
||||
# caught overrides
|
||||
for i in range(LUT_SIZE):
|
||||
# Build the bit pattern
|
||||
bitpattern = bin(i)[2:]
|
||||
bitpattern = ("0" * (9 - len(bitpattern)) + bitpattern)[::-1]
|
||||
|
||||
for pattern, r in compiled_patterns:
|
||||
if pattern.match(bitpattern):
|
||||
self.lut[i] = [0, 1][r]
|
||||
|
||||
return self.lut
|
||||
|
||||
|
||||
class MorphOp:
|
||||
"""A class for binary morphological operators"""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
lut: bytearray | None = None,
|
||||
op_name: str | None = None,
|
||||
patterns: list[str] | None = None,
|
||||
) -> None:
|
||||
"""Create a binary morphological operator"""
|
||||
self.lut = lut
|
||||
if op_name is not None:
|
||||
self.lut = LutBuilder(op_name=op_name).build_lut()
|
||||
elif patterns is not None:
|
||||
self.lut = LutBuilder(patterns=patterns).build_lut()
|
||||
|
||||
def apply(self, image: Image.Image) -> tuple[int, Image.Image]:
|
||||
"""Run a single morphological operation on an image
|
||||
|
||||
Returns a tuple of the number of changed pixels and the
|
||||
morphed image"""
|
||||
if self.lut is None:
|
||||
msg = "No operator loaded"
|
||||
raise Exception(msg)
|
||||
|
||||
if image.mode != "L":
|
||||
msg = "Image mode must be L"
|
||||
raise ValueError(msg)
|
||||
outimage = Image.new(image.mode, image.size, None)
|
||||
count = _imagingmorph.apply(bytes(self.lut), image.getim(), outimage.getim())
|
||||
return count, outimage
|
||||
|
||||
def match(self, image: Image.Image) -> list[tuple[int, int]]:
|
||||
"""Get a list of coordinates matching the morphological operation on
|
||||
an image.
|
||||
|
||||
Returns a list of tuples of (x,y) coordinates
|
||||
of all matching pixels. See :ref:`coordinate-system`."""
|
||||
if self.lut is None:
|
||||
msg = "No operator loaded"
|
||||
raise Exception(msg)
|
||||
|
||||
if image.mode != "L":
|
||||
msg = "Image mode must be L"
|
||||
raise ValueError(msg)
|
||||
return _imagingmorph.match(bytes(self.lut), image.getim())
|
||||
|
||||
def get_on_pixels(self, image: Image.Image) -> list[tuple[int, int]]:
|
||||
"""Get a list of all turned on pixels in a binary image
|
||||
|
||||
Returns a list of tuples of (x,y) coordinates
|
||||
of all matching pixels. See :ref:`coordinate-system`."""
|
||||
|
||||
if image.mode != "L":
|
||||
msg = "Image mode must be L"
|
||||
raise ValueError(msg)
|
||||
return _imagingmorph.get_on_pixels(image.getim())
|
||||
|
||||
def load_lut(self, filename: str) -> None:
|
||||
"""Load an operator from an mrl file"""
|
||||
with open(filename, "rb") as f:
|
||||
self.lut = bytearray(f.read())
|
||||
|
||||
if len(self.lut) != LUT_SIZE:
|
||||
self.lut = None
|
||||
msg = "Wrong size operator file!"
|
||||
raise Exception(msg)
|
||||
|
||||
def save_lut(self, filename: str) -> None:
|
||||
"""Save an operator to an mrl file"""
|
||||
if self.lut is None:
|
||||
msg = "No operator loaded"
|
||||
raise Exception(msg)
|
||||
with open(filename, "wb") as f:
|
||||
f.write(self.lut)
|
||||
|
||||
def set_lut(self, lut: bytearray | None) -> None:
|
||||
"""Set the lut from an external source"""
|
||||
self.lut = lut
|
||||
@ -0,0 +1,746 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# standard image operations
|
||||
#
|
||||
# History:
|
||||
# 2001-10-20 fl Created
|
||||
# 2001-10-23 fl Added autocontrast operator
|
||||
# 2001-12-18 fl Added Kevin's fit operator
|
||||
# 2004-03-14 fl Fixed potential division by zero in equalize
|
||||
# 2005-05-05 fl Fixed equalize for low number of values
|
||||
#
|
||||
# Copyright (c) 2001-2004 by Secret Labs AB
|
||||
# Copyright (c) 2001-2004 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import functools
|
||||
import operator
|
||||
import re
|
||||
from collections.abc import Sequence
|
||||
from typing import Literal, Protocol, cast, overload
|
||||
|
||||
from . import ExifTags, Image, ImagePalette
|
||||
|
||||
#
|
||||
# helpers
|
||||
|
||||
|
||||
def _border(border: int | tuple[int, ...]) -> tuple[int, int, int, int]:
|
||||
if isinstance(border, tuple):
|
||||
if len(border) == 2:
|
||||
left, top = right, bottom = border
|
||||
elif len(border) == 4:
|
||||
left, top, right, bottom = border
|
||||
else:
|
||||
left = top = right = bottom = border
|
||||
return left, top, right, bottom
|
||||
|
||||
|
||||
def _color(color: str | int | tuple[int, ...], mode: str) -> int | tuple[int, ...]:
|
||||
if isinstance(color, str):
|
||||
from . import ImageColor
|
||||
|
||||
color = ImageColor.getcolor(color, mode)
|
||||
return color
|
||||
|
||||
|
||||
def _lut(image: Image.Image, lut: list[int]) -> Image.Image:
|
||||
if image.mode == "P":
|
||||
# FIXME: apply to lookup table, not image data
|
||||
msg = "mode P support coming soon"
|
||||
raise NotImplementedError(msg)
|
||||
elif image.mode in ("L", "RGB"):
|
||||
if image.mode == "RGB" and len(lut) == 256:
|
||||
lut = lut + lut + lut
|
||||
return image.point(lut)
|
||||
else:
|
||||
msg = f"not supported for mode {image.mode}"
|
||||
raise OSError(msg)
|
||||
|
||||
|
||||
#
|
||||
# actions
|
||||
|
||||
|
||||
def autocontrast(
|
||||
image: Image.Image,
|
||||
cutoff: float | tuple[float, float] = 0,
|
||||
ignore: int | Sequence[int] | None = None,
|
||||
mask: Image.Image | None = None,
|
||||
preserve_tone: bool = False,
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Maximize (normalize) image contrast. This function calculates a
|
||||
histogram of the input image (or mask region), removes ``cutoff`` percent of the
|
||||
lightest and darkest pixels from the histogram, and remaps the image
|
||||
so that the darkest pixel becomes black (0), and the lightest
|
||||
becomes white (255).
|
||||
|
||||
:param image: The image to process.
|
||||
:param cutoff: The percent to cut off from the histogram on the low and
|
||||
high ends. Either a tuple of (low, high), or a single
|
||||
number for both.
|
||||
:param ignore: The background pixel value (use None for no background).
|
||||
:param mask: Histogram used in contrast operation is computed using pixels
|
||||
within the mask. If no mask is given the entire image is used
|
||||
for histogram computation.
|
||||
:param preserve_tone: Preserve image tone in Photoshop-like style autocontrast.
|
||||
|
||||
.. versionadded:: 8.2.0
|
||||
|
||||
:return: An image.
|
||||
"""
|
||||
if preserve_tone:
|
||||
histogram = image.convert("L").histogram(mask)
|
||||
else:
|
||||
histogram = image.histogram(mask)
|
||||
|
||||
lut = []
|
||||
for layer in range(0, len(histogram), 256):
|
||||
h = histogram[layer : layer + 256]
|
||||
if ignore is not None:
|
||||
# get rid of outliers
|
||||
if isinstance(ignore, int):
|
||||
h[ignore] = 0
|
||||
else:
|
||||
for ix in ignore:
|
||||
h[ix] = 0
|
||||
if cutoff:
|
||||
# cut off pixels from both ends of the histogram
|
||||
if not isinstance(cutoff, tuple):
|
||||
cutoff = (cutoff, cutoff)
|
||||
# get number of pixels
|
||||
n = 0
|
||||
for ix in range(256):
|
||||
n = n + h[ix]
|
||||
# remove cutoff% pixels from the low end
|
||||
cut = int(n * cutoff[0] // 100)
|
||||
for lo in range(256):
|
||||
if cut > h[lo]:
|
||||
cut = cut - h[lo]
|
||||
h[lo] = 0
|
||||
else:
|
||||
h[lo] -= cut
|
||||
cut = 0
|
||||
if cut <= 0:
|
||||
break
|
||||
# remove cutoff% samples from the high end
|
||||
cut = int(n * cutoff[1] // 100)
|
||||
for hi in range(255, -1, -1):
|
||||
if cut > h[hi]:
|
||||
cut = cut - h[hi]
|
||||
h[hi] = 0
|
||||
else:
|
||||
h[hi] -= cut
|
||||
cut = 0
|
||||
if cut <= 0:
|
||||
break
|
||||
# find lowest/highest samples after preprocessing
|
||||
for lo in range(256):
|
||||
if h[lo]:
|
||||
break
|
||||
for hi in range(255, -1, -1):
|
||||
if h[hi]:
|
||||
break
|
||||
if hi <= lo:
|
||||
# don't bother
|
||||
lut.extend(list(range(256)))
|
||||
else:
|
||||
scale = 255.0 / (hi - lo)
|
||||
offset = -lo * scale
|
||||
for ix in range(256):
|
||||
ix = int(ix * scale + offset)
|
||||
if ix < 0:
|
||||
ix = 0
|
||||
elif ix > 255:
|
||||
ix = 255
|
||||
lut.append(ix)
|
||||
return _lut(image, lut)
|
||||
|
||||
|
||||
def colorize(
|
||||
image: Image.Image,
|
||||
black: str | tuple[int, ...],
|
||||
white: str | tuple[int, ...],
|
||||
mid: str | int | tuple[int, ...] | None = None,
|
||||
blackpoint: int = 0,
|
||||
whitepoint: int = 255,
|
||||
midpoint: int = 127,
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Colorize grayscale image.
|
||||
This function calculates a color wedge which maps all black pixels in
|
||||
the source image to the first color and all white pixels to the
|
||||
second color. If ``mid`` is specified, it uses three-color mapping.
|
||||
The ``black`` and ``white`` arguments should be RGB tuples or color names;
|
||||
optionally you can use three-color mapping by also specifying ``mid``.
|
||||
Mapping positions for any of the colors can be specified
|
||||
(e.g. ``blackpoint``), where these parameters are the integer
|
||||
value corresponding to where the corresponding color should be mapped.
|
||||
These parameters must have logical order, such that
|
||||
``blackpoint <= midpoint <= whitepoint`` (if ``mid`` is specified).
|
||||
|
||||
:param image: The image to colorize.
|
||||
:param black: The color to use for black input pixels.
|
||||
:param white: The color to use for white input pixels.
|
||||
:param mid: The color to use for midtone input pixels.
|
||||
:param blackpoint: an int value [0, 255] for the black mapping.
|
||||
:param whitepoint: an int value [0, 255] for the white mapping.
|
||||
:param midpoint: an int value [0, 255] for the midtone mapping.
|
||||
:return: An image.
|
||||
"""
|
||||
|
||||
# Initial asserts
|
||||
assert image.mode == "L"
|
||||
if mid is None:
|
||||
assert 0 <= blackpoint <= whitepoint <= 255
|
||||
else:
|
||||
assert 0 <= blackpoint <= midpoint <= whitepoint <= 255
|
||||
|
||||
# Define colors from arguments
|
||||
rgb_black = cast(Sequence[int], _color(black, "RGB"))
|
||||
rgb_white = cast(Sequence[int], _color(white, "RGB"))
|
||||
rgb_mid = cast(Sequence[int], _color(mid, "RGB")) if mid is not None else None
|
||||
|
||||
# Empty lists for the mapping
|
||||
red = []
|
||||
green = []
|
||||
blue = []
|
||||
|
||||
# Create the low-end values
|
||||
for i in range(blackpoint):
|
||||
red.append(rgb_black[0])
|
||||
green.append(rgb_black[1])
|
||||
blue.append(rgb_black[2])
|
||||
|
||||
# Create the mapping (2-color)
|
||||
if rgb_mid is None:
|
||||
range_map = range(whitepoint - blackpoint)
|
||||
|
||||
for i in range_map:
|
||||
red.append(
|
||||
rgb_black[0] + i * (rgb_white[0] - rgb_black[0]) // len(range_map)
|
||||
)
|
||||
green.append(
|
||||
rgb_black[1] + i * (rgb_white[1] - rgb_black[1]) // len(range_map)
|
||||
)
|
||||
blue.append(
|
||||
rgb_black[2] + i * (rgb_white[2] - rgb_black[2]) // len(range_map)
|
||||
)
|
||||
|
||||
# Create the mapping (3-color)
|
||||
else:
|
||||
range_map1 = range(midpoint - blackpoint)
|
||||
range_map2 = range(whitepoint - midpoint)
|
||||
|
||||
for i in range_map1:
|
||||
red.append(
|
||||
rgb_black[0] + i * (rgb_mid[0] - rgb_black[0]) // len(range_map1)
|
||||
)
|
||||
green.append(
|
||||
rgb_black[1] + i * (rgb_mid[1] - rgb_black[1]) // len(range_map1)
|
||||
)
|
||||
blue.append(
|
||||
rgb_black[2] + i * (rgb_mid[2] - rgb_black[2]) // len(range_map1)
|
||||
)
|
||||
for i in range_map2:
|
||||
red.append(rgb_mid[0] + i * (rgb_white[0] - rgb_mid[0]) // len(range_map2))
|
||||
green.append(
|
||||
rgb_mid[1] + i * (rgb_white[1] - rgb_mid[1]) // len(range_map2)
|
||||
)
|
||||
blue.append(rgb_mid[2] + i * (rgb_white[2] - rgb_mid[2]) // len(range_map2))
|
||||
|
||||
# Create the high-end values
|
||||
for i in range(256 - whitepoint):
|
||||
red.append(rgb_white[0])
|
||||
green.append(rgb_white[1])
|
||||
blue.append(rgb_white[2])
|
||||
|
||||
# Return converted image
|
||||
image = image.convert("RGB")
|
||||
return _lut(image, red + green + blue)
|
||||
|
||||
|
||||
def contain(
|
||||
image: Image.Image, size: tuple[int, int], method: int = Image.Resampling.BICUBIC
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Returns a resized version of the image, set to the maximum width and height
|
||||
within the requested size, while maintaining the original aspect ratio.
|
||||
|
||||
:param image: The image to resize.
|
||||
:param size: The requested output size in pixels, given as a
|
||||
(width, height) tuple.
|
||||
:param method: Resampling method to use. Default is
|
||||
:py:attr:`~PIL.Image.Resampling.BICUBIC`.
|
||||
See :ref:`concept-filters`.
|
||||
:return: An image.
|
||||
"""
|
||||
|
||||
im_ratio = image.width / image.height
|
||||
dest_ratio = size[0] / size[1]
|
||||
|
||||
if im_ratio != dest_ratio:
|
||||
if im_ratio > dest_ratio:
|
||||
new_height = round(image.height / image.width * size[0])
|
||||
if new_height != size[1]:
|
||||
size = (size[0], new_height)
|
||||
else:
|
||||
new_width = round(image.width / image.height * size[1])
|
||||
if new_width != size[0]:
|
||||
size = (new_width, size[1])
|
||||
return image.resize(size, resample=method)
|
||||
|
||||
|
||||
def cover(
|
||||
image: Image.Image, size: tuple[int, int], method: int = Image.Resampling.BICUBIC
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Returns a resized version of the image, so that the requested size is
|
||||
covered, while maintaining the original aspect ratio.
|
||||
|
||||
:param image: The image to resize.
|
||||
:param size: The requested output size in pixels, given as a
|
||||
(width, height) tuple.
|
||||
:param method: Resampling method to use. Default is
|
||||
:py:attr:`~PIL.Image.Resampling.BICUBIC`.
|
||||
See :ref:`concept-filters`.
|
||||
:return: An image.
|
||||
"""
|
||||
|
||||
im_ratio = image.width / image.height
|
||||
dest_ratio = size[0] / size[1]
|
||||
|
||||
if im_ratio != dest_ratio:
|
||||
if im_ratio < dest_ratio:
|
||||
new_height = round(image.height / image.width * size[0])
|
||||
if new_height != size[1]:
|
||||
size = (size[0], new_height)
|
||||
else:
|
||||
new_width = round(image.width / image.height * size[1])
|
||||
if new_width != size[0]:
|
||||
size = (new_width, size[1])
|
||||
return image.resize(size, resample=method)
|
||||
|
||||
|
||||
def pad(
|
||||
image: Image.Image,
|
||||
size: tuple[int, int],
|
||||
method: int = Image.Resampling.BICUBIC,
|
||||
color: str | int | tuple[int, ...] | None = None,
|
||||
centering: tuple[float, float] = (0.5, 0.5),
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Returns a resized and padded version of the image, expanded to fill the
|
||||
requested aspect ratio and size.
|
||||
|
||||
:param image: The image to resize and crop.
|
||||
:param size: The requested output size in pixels, given as a
|
||||
(width, height) tuple.
|
||||
:param method: Resampling method to use. Default is
|
||||
:py:attr:`~PIL.Image.Resampling.BICUBIC`.
|
||||
See :ref:`concept-filters`.
|
||||
:param color: The background color of the padded image.
|
||||
:param centering: Control the position of the original image within the
|
||||
padded version.
|
||||
|
||||
(0.5, 0.5) will keep the image centered
|
||||
(0, 0) will keep the image aligned to the top left
|
||||
(1, 1) will keep the image aligned to the bottom
|
||||
right
|
||||
:return: An image.
|
||||
"""
|
||||
|
||||
resized = contain(image, size, method)
|
||||
if resized.size == size:
|
||||
out = resized
|
||||
else:
|
||||
out = Image.new(image.mode, size, color)
|
||||
if resized.palette:
|
||||
palette = resized.getpalette()
|
||||
if palette is not None:
|
||||
out.putpalette(palette)
|
||||
if resized.width != size[0]:
|
||||
x = round((size[0] - resized.width) * max(0, min(centering[0], 1)))
|
||||
out.paste(resized, (x, 0))
|
||||
else:
|
||||
y = round((size[1] - resized.height) * max(0, min(centering[1], 1)))
|
||||
out.paste(resized, (0, y))
|
||||
return out
|
||||
|
||||
|
||||
def crop(image: Image.Image, border: int = 0) -> Image.Image:
|
||||
"""
|
||||
Remove border from image. The same amount of pixels are removed
|
||||
from all four sides. This function works on all image modes.
|
||||
|
||||
.. seealso:: :py:meth:`~PIL.Image.Image.crop`
|
||||
|
||||
:param image: The image to crop.
|
||||
:param border: The number of pixels to remove.
|
||||
:return: An image.
|
||||
"""
|
||||
left, top, right, bottom = _border(border)
|
||||
return image.crop((left, top, image.size[0] - right, image.size[1] - bottom))
|
||||
|
||||
|
||||
def scale(
|
||||
image: Image.Image, factor: float, resample: int = Image.Resampling.BICUBIC
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Returns a rescaled image by a specific factor given in parameter.
|
||||
A factor greater than 1 expands the image, between 0 and 1 contracts the
|
||||
image.
|
||||
|
||||
:param image: The image to rescale.
|
||||
:param factor: The expansion factor, as a float.
|
||||
:param resample: Resampling method to use. Default is
|
||||
:py:attr:`~PIL.Image.Resampling.BICUBIC`.
|
||||
See :ref:`concept-filters`.
|
||||
:returns: An :py:class:`~PIL.Image.Image` object.
|
||||
"""
|
||||
if factor == 1:
|
||||
return image.copy()
|
||||
elif factor <= 0:
|
||||
msg = "the factor must be greater than 0"
|
||||
raise ValueError(msg)
|
||||
else:
|
||||
size = (round(factor * image.width), round(factor * image.height))
|
||||
return image.resize(size, resample)
|
||||
|
||||
|
||||
class SupportsGetMesh(Protocol):
|
||||
"""
|
||||
An object that supports the ``getmesh`` method, taking an image as an
|
||||
argument, and returning a list of tuples. Each tuple contains two tuples,
|
||||
the source box as a tuple of 4 integers, and a tuple of 8 integers for the
|
||||
final quadrilateral, in order of top left, bottom left, bottom right, top
|
||||
right.
|
||||
"""
|
||||
|
||||
def getmesh(
|
||||
self, image: Image.Image
|
||||
) -> list[
|
||||
tuple[tuple[int, int, int, int], tuple[int, int, int, int, int, int, int, int]]
|
||||
]: ...
|
||||
|
||||
|
||||
def deform(
|
||||
image: Image.Image,
|
||||
deformer: SupportsGetMesh,
|
||||
resample: int = Image.Resampling.BILINEAR,
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Deform the image.
|
||||
|
||||
:param image: The image to deform.
|
||||
:param deformer: A deformer object. Any object that implements a
|
||||
``getmesh`` method can be used.
|
||||
:param resample: An optional resampling filter. Same values possible as
|
||||
in the PIL.Image.transform function.
|
||||
:return: An image.
|
||||
"""
|
||||
return image.transform(
|
||||
image.size, Image.Transform.MESH, deformer.getmesh(image), resample
|
||||
)
|
||||
|
||||
|
||||
def equalize(image: Image.Image, mask: Image.Image | None = None) -> Image.Image:
|
||||
"""
|
||||
Equalize the image histogram. This function applies a non-linear
|
||||
mapping to the input image, in order to create a uniform
|
||||
distribution of grayscale values in the output image.
|
||||
|
||||
:param image: The image to equalize.
|
||||
:param mask: An optional mask. If given, only the pixels selected by
|
||||
the mask are included in the analysis.
|
||||
:return: An image.
|
||||
"""
|
||||
if image.mode == "P":
|
||||
image = image.convert("RGB")
|
||||
h = image.histogram(mask)
|
||||
lut = []
|
||||
for b in range(0, len(h), 256):
|
||||
histo = [_f for _f in h[b : b + 256] if _f]
|
||||
if len(histo) <= 1:
|
||||
lut.extend(list(range(256)))
|
||||
else:
|
||||
step = (functools.reduce(operator.add, histo) - histo[-1]) // 255
|
||||
if not step:
|
||||
lut.extend(list(range(256)))
|
||||
else:
|
||||
n = step // 2
|
||||
for i in range(256):
|
||||
lut.append(n // step)
|
||||
n = n + h[i + b]
|
||||
return _lut(image, lut)
|
||||
|
||||
|
||||
def expand(
|
||||
image: Image.Image,
|
||||
border: int | tuple[int, ...] = 0,
|
||||
fill: str | int | tuple[int, ...] = 0,
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Add border to the image
|
||||
|
||||
:param image: The image to expand.
|
||||
:param border: Border width, in pixels.
|
||||
:param fill: Pixel fill value (a color value). Default is 0 (black).
|
||||
:return: An image.
|
||||
"""
|
||||
left, top, right, bottom = _border(border)
|
||||
width = left + image.size[0] + right
|
||||
height = top + image.size[1] + bottom
|
||||
color = _color(fill, image.mode)
|
||||
if image.palette:
|
||||
mode = image.palette.mode
|
||||
palette = ImagePalette.ImagePalette(mode, image.getpalette(mode))
|
||||
if isinstance(color, tuple) and (len(color) == 3 or len(color) == 4):
|
||||
color = palette.getcolor(color)
|
||||
else:
|
||||
palette = None
|
||||
out = Image.new(image.mode, (width, height), color)
|
||||
if palette:
|
||||
out.putpalette(palette.palette, mode)
|
||||
out.paste(image, (left, top))
|
||||
return out
|
||||
|
||||
|
||||
def fit(
|
||||
image: Image.Image,
|
||||
size: tuple[int, int],
|
||||
method: int = Image.Resampling.BICUBIC,
|
||||
bleed: float = 0.0,
|
||||
centering: tuple[float, float] = (0.5, 0.5),
|
||||
) -> Image.Image:
|
||||
"""
|
||||
Returns a resized and cropped version of the image, cropped to the
|
||||
requested aspect ratio and size.
|
||||
|
||||
This function was contributed by Kevin Cazabon.
|
||||
|
||||
:param image: The image to resize and crop.
|
||||
:param size: The requested output size in pixels, given as a
|
||||
(width, height) tuple.
|
||||
:param method: Resampling method to use. Default is
|
||||
:py:attr:`~PIL.Image.Resampling.BICUBIC`.
|
||||
See :ref:`concept-filters`.
|
||||
:param bleed: Remove a border around the outside of the image from all
|
||||
four edges. The value is a decimal percentage (use 0.01 for
|
||||
one percent). The default value is 0 (no border).
|
||||
Cannot be greater than or equal to 0.5.
|
||||
:param centering: Control the cropping position. Use (0.5, 0.5) for
|
||||
center cropping (e.g. if cropping the width, take 50% off
|
||||
of the left side, and therefore 50% off the right side).
|
||||
(0.0, 0.0) will crop from the top left corner (i.e. if
|
||||
cropping the width, take all of the crop off of the right
|
||||
side, and if cropping the height, take all of it off the
|
||||
bottom). (1.0, 0.0) will crop from the bottom left
|
||||
corner, etc. (i.e. if cropping the width, take all of the
|
||||
crop off the left side, and if cropping the height take
|
||||
none from the top, and therefore all off the bottom).
|
||||
:return: An image.
|
||||
"""
|
||||
|
||||
# by Kevin Cazabon, Feb 17/2000
|
||||
# kevin@cazabon.com
|
||||
# https://www.cazabon.com
|
||||
|
||||
centering_x, centering_y = centering
|
||||
|
||||
if not 0.0 <= centering_x <= 1.0:
|
||||
centering_x = 0.5
|
||||
if not 0.0 <= centering_y <= 1.0:
|
||||
centering_y = 0.5
|
||||
|
||||
if not 0.0 <= bleed < 0.5:
|
||||
bleed = 0.0
|
||||
|
||||
# calculate the area to use for resizing and cropping, subtracting
|
||||
# the 'bleed' around the edges
|
||||
|
||||
# number of pixels to trim off on Top and Bottom, Left and Right
|
||||
bleed_pixels = (bleed * image.size[0], bleed * image.size[1])
|
||||
|
||||
live_size = (
|
||||
image.size[0] - bleed_pixels[0] * 2,
|
||||
image.size[1] - bleed_pixels[1] * 2,
|
||||
)
|
||||
|
||||
# calculate the aspect ratio of the live_size
|
||||
live_size_ratio = live_size[0] / live_size[1]
|
||||
|
||||
# calculate the aspect ratio of the output image
|
||||
output_ratio = size[0] / size[1]
|
||||
|
||||
# figure out if the sides or top/bottom will be cropped off
|
||||
if live_size_ratio == output_ratio:
|
||||
# live_size is already the needed ratio
|
||||
crop_width = live_size[0]
|
||||
crop_height = live_size[1]
|
||||
elif live_size_ratio >= output_ratio:
|
||||
# live_size is wider than what's needed, crop the sides
|
||||
crop_width = output_ratio * live_size[1]
|
||||
crop_height = live_size[1]
|
||||
else:
|
||||
# live_size is taller than what's needed, crop the top and bottom
|
||||
crop_width = live_size[0]
|
||||
crop_height = live_size[0] / output_ratio
|
||||
|
||||
# make the crop
|
||||
crop_left = bleed_pixels[0] + (live_size[0] - crop_width) * centering_x
|
||||
crop_top = bleed_pixels[1] + (live_size[1] - crop_height) * centering_y
|
||||
|
||||
crop = (crop_left, crop_top, crop_left + crop_width, crop_top + crop_height)
|
||||
|
||||
# resize the image and return it
|
||||
return image.resize(size, method, box=crop)
|
||||
|
||||
|
||||
def flip(image: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Flip the image vertically (top to bottom).
|
||||
|
||||
:param image: The image to flip.
|
||||
:return: An image.
|
||||
"""
|
||||
return image.transpose(Image.Transpose.FLIP_TOP_BOTTOM)
|
||||
|
||||
|
||||
def grayscale(image: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Convert the image to grayscale.
|
||||
|
||||
:param image: The image to convert.
|
||||
:return: An image.
|
||||
"""
|
||||
return image.convert("L")
|
||||
|
||||
|
||||
def invert(image: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Invert (negate) the image.
|
||||
|
||||
:param image: The image to invert.
|
||||
:return: An image.
|
||||
"""
|
||||
lut = list(range(255, -1, -1))
|
||||
return image.point(lut) if image.mode == "1" else _lut(image, lut)
|
||||
|
||||
|
||||
def mirror(image: Image.Image) -> Image.Image:
|
||||
"""
|
||||
Flip image horizontally (left to right).
|
||||
|
||||
:param image: The image to mirror.
|
||||
:return: An image.
|
||||
"""
|
||||
return image.transpose(Image.Transpose.FLIP_LEFT_RIGHT)
|
||||
|
||||
|
||||
def posterize(image: Image.Image, bits: int) -> Image.Image:
|
||||
"""
|
||||
Reduce the number of bits for each color channel.
|
||||
|
||||
:param image: The image to posterize.
|
||||
:param bits: The number of bits to keep for each channel (1-8).
|
||||
:return: An image.
|
||||
"""
|
||||
mask = ~(2 ** (8 - bits) - 1)
|
||||
lut = [i & mask for i in range(256)]
|
||||
return _lut(image, lut)
|
||||
|
||||
|
||||
def solarize(image: Image.Image, threshold: int = 128) -> Image.Image:
|
||||
"""
|
||||
Invert all pixel values above a threshold.
|
||||
|
||||
:param image: The image to solarize.
|
||||
:param threshold: All pixels above this grayscale level are inverted.
|
||||
:return: An image.
|
||||
"""
|
||||
lut = []
|
||||
for i in range(256):
|
||||
if i < threshold:
|
||||
lut.append(i)
|
||||
else:
|
||||
lut.append(255 - i)
|
||||
return _lut(image, lut)
|
||||
|
||||
|
||||
@overload
|
||||
def exif_transpose(image: Image.Image, *, in_place: Literal[True]) -> None: ...
|
||||
|
||||
|
||||
@overload
|
||||
def exif_transpose(
|
||||
image: Image.Image, *, in_place: Literal[False] = False
|
||||
) -> Image.Image: ...
|
||||
|
||||
|
||||
def exif_transpose(image: Image.Image, *, in_place: bool = False) -> Image.Image | None:
|
||||
"""
|
||||
If an image has an EXIF Orientation tag, other than 1, transpose the image
|
||||
accordingly, and remove the orientation data.
|
||||
|
||||
:param image: The image to transpose.
|
||||
:param in_place: Boolean. Keyword-only argument.
|
||||
If ``True``, the original image is modified in-place, and ``None`` is returned.
|
||||
If ``False`` (default), a new :py:class:`~PIL.Image.Image` object is returned
|
||||
with the transposition applied. If there is no transposition, a copy of the
|
||||
image will be returned.
|
||||
"""
|
||||
image.load()
|
||||
image_exif = image.getexif()
|
||||
orientation = image_exif.get(ExifTags.Base.Orientation, 1)
|
||||
method = {
|
||||
2: Image.Transpose.FLIP_LEFT_RIGHT,
|
||||
3: Image.Transpose.ROTATE_180,
|
||||
4: Image.Transpose.FLIP_TOP_BOTTOM,
|
||||
5: Image.Transpose.TRANSPOSE,
|
||||
6: Image.Transpose.ROTATE_270,
|
||||
7: Image.Transpose.TRANSVERSE,
|
||||
8: Image.Transpose.ROTATE_90,
|
||||
}.get(orientation)
|
||||
if method is not None:
|
||||
if in_place:
|
||||
image.im = image.im.transpose(method)
|
||||
image._size = image.im.size
|
||||
else:
|
||||
transposed_image = image.transpose(method)
|
||||
exif_image = image if in_place else transposed_image
|
||||
|
||||
exif = exif_image.getexif()
|
||||
if ExifTags.Base.Orientation in exif:
|
||||
del exif[ExifTags.Base.Orientation]
|
||||
if "exif" in exif_image.info:
|
||||
exif_image.info["exif"] = exif.tobytes()
|
||||
elif "Raw profile type exif" in exif_image.info:
|
||||
exif_image.info["Raw profile type exif"] = exif.tobytes().hex()
|
||||
for key in ("XML:com.adobe.xmp", "xmp"):
|
||||
if key in exif_image.info:
|
||||
for pattern in (
|
||||
r'tiff:Orientation="([0-9])"',
|
||||
r"<tiff:Orientation>([0-9])</tiff:Orientation>",
|
||||
):
|
||||
value = exif_image.info[key]
|
||||
if isinstance(value, str):
|
||||
value = re.sub(pattern, "", value)
|
||||
elif isinstance(value, tuple):
|
||||
value = tuple(
|
||||
re.sub(pattern.encode(), b"", v) for v in value
|
||||
)
|
||||
else:
|
||||
value = re.sub(pattern.encode(), b"", value)
|
||||
exif_image.info[key] = value
|
||||
if not in_place:
|
||||
return transposed_image
|
||||
elif not in_place:
|
||||
return image.copy()
|
||||
return None
|
||||
@ -0,0 +1,286 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# image palette object
|
||||
#
|
||||
# History:
|
||||
# 1996-03-11 fl Rewritten.
|
||||
# 1997-01-03 fl Up and running.
|
||||
# 1997-08-23 fl Added load hack
|
||||
# 2001-04-16 fl Fixed randint shadow bug in random()
|
||||
#
|
||||
# Copyright (c) 1997-2001 by Secret Labs AB
|
||||
# Copyright (c) 1996-1997 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import array
|
||||
from collections.abc import Sequence
|
||||
from typing import IO
|
||||
|
||||
from . import GimpGradientFile, GimpPaletteFile, ImageColor, PaletteFile
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from . import Image
|
||||
|
||||
|
||||
class ImagePalette:
|
||||
"""
|
||||
Color palette for palette mapped images
|
||||
|
||||
:param mode: The mode to use for the palette. See:
|
||||
:ref:`concept-modes`. Defaults to "RGB"
|
||||
:param palette: An optional palette. If given, it must be a bytearray,
|
||||
an array or a list of ints between 0-255. The list must consist of
|
||||
all channels for one color followed by the next color (e.g. RGBRGBRGB).
|
||||
Defaults to an empty palette.
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
mode: str = "RGB",
|
||||
palette: Sequence[int] | bytes | bytearray | None = None,
|
||||
) -> None:
|
||||
self.mode = mode
|
||||
self.rawmode: str | None = None # if set, palette contains raw data
|
||||
self.palette = palette or bytearray()
|
||||
self.dirty: int | None = None
|
||||
|
||||
@property
|
||||
def palette(self) -> Sequence[int] | bytes | bytearray:
|
||||
return self._palette
|
||||
|
||||
@palette.setter
|
||||
def palette(self, palette: Sequence[int] | bytes | bytearray) -> None:
|
||||
self._colors: dict[tuple[int, ...], int] | None = None
|
||||
self._palette = palette
|
||||
|
||||
@property
|
||||
def colors(self) -> dict[tuple[int, ...], int]:
|
||||
if self._colors is None:
|
||||
mode_len = len(self.mode)
|
||||
self._colors = {}
|
||||
for i in range(0, len(self.palette), mode_len):
|
||||
color = tuple(self.palette[i : i + mode_len])
|
||||
if color in self._colors:
|
||||
continue
|
||||
self._colors[color] = i // mode_len
|
||||
return self._colors
|
||||
|
||||
@colors.setter
|
||||
def colors(self, colors: dict[tuple[int, ...], int]) -> None:
|
||||
self._colors = colors
|
||||
|
||||
def copy(self) -> ImagePalette:
|
||||
new = ImagePalette()
|
||||
|
||||
new.mode = self.mode
|
||||
new.rawmode = self.rawmode
|
||||
if self.palette is not None:
|
||||
new.palette = self.palette[:]
|
||||
new.dirty = self.dirty
|
||||
|
||||
return new
|
||||
|
||||
def getdata(self) -> tuple[str, Sequence[int] | bytes | bytearray]:
|
||||
"""
|
||||
Get palette contents in format suitable for the low-level
|
||||
``im.putpalette`` primitive.
|
||||
|
||||
.. warning:: This method is experimental.
|
||||
"""
|
||||
if self.rawmode:
|
||||
return self.rawmode, self.palette
|
||||
return self.mode, self.tobytes()
|
||||
|
||||
def tobytes(self) -> bytes:
|
||||
"""Convert palette to bytes.
|
||||
|
||||
.. warning:: This method is experimental.
|
||||
"""
|
||||
if self.rawmode:
|
||||
msg = "palette contains raw palette data"
|
||||
raise ValueError(msg)
|
||||
if isinstance(self.palette, bytes):
|
||||
return self.palette
|
||||
arr = array.array("B", self.palette)
|
||||
return arr.tobytes()
|
||||
|
||||
# Declare tostring as an alias for tobytes
|
||||
tostring = tobytes
|
||||
|
||||
def _new_color_index(
|
||||
self, image: Image.Image | None = None, e: Exception | None = None
|
||||
) -> int:
|
||||
if not isinstance(self.palette, bytearray):
|
||||
self._palette = bytearray(self.palette)
|
||||
index = len(self.palette) // 3
|
||||
special_colors: tuple[int | tuple[int, ...] | None, ...] = ()
|
||||
if image:
|
||||
special_colors = (
|
||||
image.info.get("background"),
|
||||
image.info.get("transparency"),
|
||||
)
|
||||
while index in special_colors:
|
||||
index += 1
|
||||
if index >= 256:
|
||||
if image:
|
||||
# Search for an unused index
|
||||
for i, count in reversed(list(enumerate(image.histogram()))):
|
||||
if count == 0 and i not in special_colors:
|
||||
index = i
|
||||
break
|
||||
if index >= 256:
|
||||
msg = "cannot allocate more than 256 colors"
|
||||
raise ValueError(msg) from e
|
||||
return index
|
||||
|
||||
def getcolor(
|
||||
self,
|
||||
color: tuple[int, ...],
|
||||
image: Image.Image | None = None,
|
||||
) -> int:
|
||||
"""Given an rgb tuple, allocate palette entry.
|
||||
|
||||
.. warning:: This method is experimental.
|
||||
"""
|
||||
if self.rawmode:
|
||||
msg = "palette contains raw palette data"
|
||||
raise ValueError(msg)
|
||||
if isinstance(color, tuple):
|
||||
if self.mode == "RGB":
|
||||
if len(color) == 4:
|
||||
if color[3] != 255:
|
||||
msg = "cannot add non-opaque RGBA color to RGB palette"
|
||||
raise ValueError(msg)
|
||||
color = color[:3]
|
||||
elif self.mode == "RGBA":
|
||||
if len(color) == 3:
|
||||
color += (255,)
|
||||
try:
|
||||
return self.colors[color]
|
||||
except KeyError as e:
|
||||
# allocate new color slot
|
||||
index = self._new_color_index(image, e)
|
||||
assert isinstance(self._palette, bytearray)
|
||||
self.colors[color] = index
|
||||
if index * 3 < len(self.palette):
|
||||
self._palette = (
|
||||
self._palette[: index * 3]
|
||||
+ bytes(color)
|
||||
+ self._palette[index * 3 + 3 :]
|
||||
)
|
||||
else:
|
||||
self._palette += bytes(color)
|
||||
self.dirty = 1
|
||||
return index
|
||||
else:
|
||||
msg = f"unknown color specifier: {repr(color)}" # type: ignore[unreachable]
|
||||
raise ValueError(msg)
|
||||
|
||||
def save(self, fp: str | IO[str]) -> None:
|
||||
"""Save palette to text file.
|
||||
|
||||
.. warning:: This method is experimental.
|
||||
"""
|
||||
if self.rawmode:
|
||||
msg = "palette contains raw palette data"
|
||||
raise ValueError(msg)
|
||||
if isinstance(fp, str):
|
||||
fp = open(fp, "w")
|
||||
fp.write("# Palette\n")
|
||||
fp.write(f"# Mode: {self.mode}\n")
|
||||
for i in range(256):
|
||||
fp.write(f"{i}")
|
||||
for j in range(i * len(self.mode), (i + 1) * len(self.mode)):
|
||||
try:
|
||||
fp.write(f" {self.palette[j]}")
|
||||
except IndexError:
|
||||
fp.write(" 0")
|
||||
fp.write("\n")
|
||||
fp.close()
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Internal
|
||||
|
||||
|
||||
def raw(rawmode: str, data: Sequence[int] | bytes | bytearray) -> ImagePalette:
|
||||
palette = ImagePalette()
|
||||
palette.rawmode = rawmode
|
||||
palette.palette = data
|
||||
palette.dirty = 1
|
||||
return palette
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Factories
|
||||
|
||||
|
||||
def make_linear_lut(black: int, white: float) -> list[int]:
|
||||
if black == 0:
|
||||
return [int(white * i // 255) for i in range(256)]
|
||||
|
||||
msg = "unavailable when black is non-zero"
|
||||
raise NotImplementedError(msg) # FIXME
|
||||
|
||||
|
||||
def make_gamma_lut(exp: float) -> list[int]:
|
||||
return [int(((i / 255.0) ** exp) * 255.0 + 0.5) for i in range(256)]
|
||||
|
||||
|
||||
def negative(mode: str = "RGB") -> ImagePalette:
|
||||
palette = list(range(256 * len(mode)))
|
||||
palette.reverse()
|
||||
return ImagePalette(mode, [i // len(mode) for i in palette])
|
||||
|
||||
|
||||
def random(mode: str = "RGB") -> ImagePalette:
|
||||
from random import randint
|
||||
|
||||
palette = [randint(0, 255) for _ in range(256 * len(mode))]
|
||||
return ImagePalette(mode, palette)
|
||||
|
||||
|
||||
def sepia(white: str = "#fff0c0") -> ImagePalette:
|
||||
bands = [make_linear_lut(0, band) for band in ImageColor.getrgb(white)]
|
||||
return ImagePalette("RGB", [bands[i % 3][i // 3] for i in range(256 * 3)])
|
||||
|
||||
|
||||
def wedge(mode: str = "RGB") -> ImagePalette:
|
||||
palette = list(range(256 * len(mode)))
|
||||
return ImagePalette(mode, [i // len(mode) for i in palette])
|
||||
|
||||
|
||||
def load(filename: str) -> tuple[bytes, str]:
|
||||
# FIXME: supports GIMP gradients only
|
||||
|
||||
with open(filename, "rb") as fp:
|
||||
paletteHandlers: list[
|
||||
type[
|
||||
GimpPaletteFile.GimpPaletteFile
|
||||
| GimpGradientFile.GimpGradientFile
|
||||
| PaletteFile.PaletteFile
|
||||
]
|
||||
] = [
|
||||
GimpPaletteFile.GimpPaletteFile,
|
||||
GimpGradientFile.GimpGradientFile,
|
||||
PaletteFile.PaletteFile,
|
||||
]
|
||||
for paletteHandler in paletteHandlers:
|
||||
try:
|
||||
fp.seek(0)
|
||||
lut = paletteHandler(fp).getpalette()
|
||||
if lut:
|
||||
break
|
||||
except (SyntaxError, ValueError):
|
||||
pass
|
||||
else:
|
||||
msg = "cannot load palette"
|
||||
raise OSError(msg)
|
||||
|
||||
return lut # data, rawmode
|
||||
@ -0,0 +1,20 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# path interface
|
||||
#
|
||||
# History:
|
||||
# 1996-11-04 fl Created
|
||||
# 2002-04-14 fl Added documentation stub class
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1996.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
from . import Image
|
||||
|
||||
Path = Image.core.path
|
||||
@ -0,0 +1,219 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# a simple Qt image interface.
|
||||
#
|
||||
# history:
|
||||
# 2006-06-03 fl: created
|
||||
# 2006-06-04 fl: inherit from QImage instead of wrapping it
|
||||
# 2006-06-05 fl: removed toimage helper; move string support to ImageQt
|
||||
# 2013-11-13 fl: add support for Qt5 (aurelien.ballier@cyclonit.com)
|
||||
#
|
||||
# Copyright (c) 2006 by Secret Labs AB
|
||||
# Copyright (c) 2006 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import sys
|
||||
from io import BytesIO
|
||||
|
||||
from . import Image
|
||||
from ._util import is_path
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from collections.abc import Callable
|
||||
from typing import Any
|
||||
|
||||
from . import ImageFile
|
||||
|
||||
QBuffer: type
|
||||
|
||||
qt_version: str | None
|
||||
qt_versions = [
|
||||
["6", "PyQt6"],
|
||||
["side6", "PySide6"],
|
||||
]
|
||||
|
||||
# If a version has already been imported, attempt it first
|
||||
qt_versions.sort(key=lambda version: version[1] in sys.modules, reverse=True)
|
||||
for version, qt_module in qt_versions:
|
||||
try:
|
||||
qRgba: Callable[[int, int, int, int], int]
|
||||
if qt_module == "PyQt6":
|
||||
from PyQt6.QtCore import QBuffer, QByteArray, QIODevice
|
||||
from PyQt6.QtGui import QImage, QPixmap, qRgba
|
||||
elif qt_module == "PySide6":
|
||||
from PySide6.QtCore import ( # type: ignore[assignment]
|
||||
QBuffer,
|
||||
QByteArray,
|
||||
QIODevice,
|
||||
)
|
||||
from PySide6.QtGui import QImage, QPixmap, qRgba # type: ignore[assignment]
|
||||
except (ImportError, RuntimeError):
|
||||
continue
|
||||
qt_is_installed = True
|
||||
qt_version = version
|
||||
break
|
||||
else:
|
||||
qt_is_installed = False
|
||||
qt_version = None
|
||||
|
||||
|
||||
def rgb(r: int, g: int, b: int, a: int = 255) -> int:
|
||||
"""(Internal) Turns an RGB color into a Qt compatible color integer."""
|
||||
# use qRgb to pack the colors, and then turn the resulting long
|
||||
# into a negative integer with the same bitpattern.
|
||||
return qRgba(r, g, b, a) & 0xFFFFFFFF
|
||||
|
||||
|
||||
def fromqimage(im: QImage | QPixmap) -> ImageFile.ImageFile:
|
||||
"""
|
||||
:param im: QImage or PIL ImageQt object
|
||||
"""
|
||||
buffer = QBuffer()
|
||||
qt_openmode: object
|
||||
if qt_version == "6":
|
||||
try:
|
||||
qt_openmode = getattr(QIODevice, "OpenModeFlag")
|
||||
except AttributeError:
|
||||
qt_openmode = getattr(QIODevice, "OpenMode")
|
||||
else:
|
||||
qt_openmode = QIODevice
|
||||
buffer.open(getattr(qt_openmode, "ReadWrite"))
|
||||
# preserve alpha channel with png
|
||||
# otherwise ppm is more friendly with Image.open
|
||||
if im.hasAlphaChannel():
|
||||
im.save(buffer, "png")
|
||||
else:
|
||||
im.save(buffer, "ppm")
|
||||
|
||||
b = BytesIO()
|
||||
b.write(buffer.data())
|
||||
buffer.close()
|
||||
b.seek(0)
|
||||
|
||||
return Image.open(b)
|
||||
|
||||
|
||||
def fromqpixmap(im: QPixmap) -> ImageFile.ImageFile:
|
||||
return fromqimage(im)
|
||||
|
||||
|
||||
def align8to32(bytes: bytes, width: int, mode: str) -> bytes:
|
||||
"""
|
||||
converts each scanline of data from 8 bit to 32 bit aligned
|
||||
"""
|
||||
|
||||
bits_per_pixel = {"1": 1, "L": 8, "P": 8, "I;16": 16}[mode]
|
||||
|
||||
# calculate bytes per line and the extra padding if needed
|
||||
bits_per_line = bits_per_pixel * width
|
||||
full_bytes_per_line, remaining_bits_per_line = divmod(bits_per_line, 8)
|
||||
bytes_per_line = full_bytes_per_line + (1 if remaining_bits_per_line else 0)
|
||||
|
||||
extra_padding = -bytes_per_line % 4
|
||||
|
||||
# already 32 bit aligned by luck
|
||||
if not extra_padding:
|
||||
return bytes
|
||||
|
||||
new_data = [
|
||||
bytes[i * bytes_per_line : (i + 1) * bytes_per_line] + b"\x00" * extra_padding
|
||||
for i in range(len(bytes) // bytes_per_line)
|
||||
]
|
||||
|
||||
return b"".join(new_data)
|
||||
|
||||
|
||||
def _toqclass_helper(im: Image.Image | str | QByteArray) -> dict[str, Any]:
|
||||
data = None
|
||||
colortable = None
|
||||
exclusive_fp = False
|
||||
|
||||
# handle filename, if given instead of image name
|
||||
if hasattr(im, "toUtf8"):
|
||||
# FIXME - is this really the best way to do this?
|
||||
im = str(im.toUtf8(), "utf-8")
|
||||
if is_path(im):
|
||||
im = Image.open(im)
|
||||
exclusive_fp = True
|
||||
assert isinstance(im, Image.Image)
|
||||
|
||||
qt_format = getattr(QImage, "Format") if qt_version == "6" else QImage
|
||||
if im.mode == "1":
|
||||
format = getattr(qt_format, "Format_Mono")
|
||||
elif im.mode == "L":
|
||||
format = getattr(qt_format, "Format_Indexed8")
|
||||
colortable = [rgb(i, i, i) for i in range(256)]
|
||||
elif im.mode == "P":
|
||||
format = getattr(qt_format, "Format_Indexed8")
|
||||
palette = im.getpalette()
|
||||
assert palette is not None
|
||||
colortable = [rgb(*palette[i : i + 3]) for i in range(0, len(palette), 3)]
|
||||
elif im.mode == "RGB":
|
||||
# Populate the 4th channel with 255
|
||||
im = im.convert("RGBA")
|
||||
|
||||
data = im.tobytes("raw", "BGRA")
|
||||
format = getattr(qt_format, "Format_RGB32")
|
||||
elif im.mode == "RGBA":
|
||||
data = im.tobytes("raw", "BGRA")
|
||||
format = getattr(qt_format, "Format_ARGB32")
|
||||
elif im.mode == "I;16":
|
||||
im = im.point(lambda i: i * 256)
|
||||
|
||||
format = getattr(qt_format, "Format_Grayscale16")
|
||||
else:
|
||||
if exclusive_fp:
|
||||
im.close()
|
||||
msg = f"unsupported image mode {repr(im.mode)}"
|
||||
raise ValueError(msg)
|
||||
|
||||
size = im.size
|
||||
__data = data or align8to32(im.tobytes(), size[0], im.mode)
|
||||
if exclusive_fp:
|
||||
im.close()
|
||||
return {"data": __data, "size": size, "format": format, "colortable": colortable}
|
||||
|
||||
|
||||
if qt_is_installed:
|
||||
|
||||
class ImageQt(QImage):
|
||||
def __init__(self, im: Image.Image | str | QByteArray) -> None:
|
||||
"""
|
||||
An PIL image wrapper for Qt. This is a subclass of PyQt's QImage
|
||||
class.
|
||||
|
||||
:param im: A PIL Image object, or a file name (given either as
|
||||
Python string or a PyQt string object).
|
||||
"""
|
||||
im_data = _toqclass_helper(im)
|
||||
# must keep a reference, or Qt will crash!
|
||||
# All QImage constructors that take data operate on an existing
|
||||
# buffer, so this buffer has to hang on for the life of the image.
|
||||
# Fixes https://github.com/python-pillow/Pillow/issues/1370
|
||||
self.__data = im_data["data"]
|
||||
super().__init__(
|
||||
self.__data,
|
||||
im_data["size"][0],
|
||||
im_data["size"][1],
|
||||
im_data["format"],
|
||||
)
|
||||
if im_data["colortable"]:
|
||||
self.setColorTable(im_data["colortable"])
|
||||
|
||||
|
||||
def toqimage(im: Image.Image | str | QByteArray) -> ImageQt:
|
||||
return ImageQt(im)
|
||||
|
||||
|
||||
def toqpixmap(im: Image.Image | str | QByteArray) -> QPixmap:
|
||||
qimage = toqimage(im)
|
||||
pixmap = getattr(QPixmap, "fromImage")(qimage)
|
||||
if qt_version == "6":
|
||||
pixmap.detach()
|
||||
return pixmap
|
||||
@ -0,0 +1,88 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# sequence support classes
|
||||
#
|
||||
# history:
|
||||
# 1997-02-20 fl Created
|
||||
#
|
||||
# Copyright (c) 1997 by Secret Labs AB.
|
||||
# Copyright (c) 1997 by Fredrik Lundh.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
|
||||
##
|
||||
from __future__ import annotations
|
||||
|
||||
from . import Image
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from collections.abc import Callable
|
||||
|
||||
|
||||
class Iterator:
|
||||
"""
|
||||
This class implements an iterator object that can be used to loop
|
||||
over an image sequence.
|
||||
|
||||
You can use the ``[]`` operator to access elements by index. This operator
|
||||
will raise an :py:exc:`IndexError` if you try to access a nonexistent
|
||||
frame.
|
||||
|
||||
:param im: An image object.
|
||||
"""
|
||||
|
||||
def __init__(self, im: Image.Image) -> None:
|
||||
if not hasattr(im, "seek"):
|
||||
msg = "im must have seek method"
|
||||
raise AttributeError(msg)
|
||||
self.im = im
|
||||
self.position = getattr(self.im, "_min_frame", 0)
|
||||
|
||||
def __getitem__(self, ix: int) -> Image.Image:
|
||||
try:
|
||||
self.im.seek(ix)
|
||||
return self.im
|
||||
except EOFError as e:
|
||||
msg = "end of sequence"
|
||||
raise IndexError(msg) from e
|
||||
|
||||
def __iter__(self) -> Iterator:
|
||||
return self
|
||||
|
||||
def __next__(self) -> Image.Image:
|
||||
try:
|
||||
self.im.seek(self.position)
|
||||
self.position += 1
|
||||
return self.im
|
||||
except EOFError as e:
|
||||
msg = "end of sequence"
|
||||
raise StopIteration(msg) from e
|
||||
|
||||
|
||||
def all_frames(
|
||||
im: Image.Image | list[Image.Image],
|
||||
func: Callable[[Image.Image], Image.Image] | None = None,
|
||||
) -> list[Image.Image]:
|
||||
"""
|
||||
Applies a given function to all frames in an image or a list of images.
|
||||
The frames are returned as a list of separate images.
|
||||
|
||||
:param im: An image, or a list of images.
|
||||
:param func: The function to apply to all of the image frames.
|
||||
:returns: A list of images.
|
||||
"""
|
||||
if not isinstance(im, list):
|
||||
im = [im]
|
||||
|
||||
ims = []
|
||||
for imSequence in im:
|
||||
current = imSequence.tell()
|
||||
|
||||
ims += [im_frame.copy() for im_frame in Iterator(imSequence)]
|
||||
|
||||
imSequence.seek(current)
|
||||
return [func(im) for im in ims] if func else ims
|
||||
@ -0,0 +1,362 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# im.show() drivers
|
||||
#
|
||||
# History:
|
||||
# 2008-04-06 fl Created
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 2008.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import abc
|
||||
import os
|
||||
import shutil
|
||||
import subprocess
|
||||
import sys
|
||||
from shlex import quote
|
||||
from typing import Any
|
||||
|
||||
from . import Image
|
||||
|
||||
_viewers = []
|
||||
|
||||
|
||||
def register(viewer: type[Viewer] | Viewer, order: int = 1) -> None:
|
||||
"""
|
||||
The :py:func:`register` function is used to register additional viewers::
|
||||
|
||||
from PIL import ImageShow
|
||||
ImageShow.register(MyViewer()) # MyViewer will be used as a last resort
|
||||
ImageShow.register(MySecondViewer(), 0) # MySecondViewer will be prioritised
|
||||
ImageShow.register(ImageShow.XVViewer(), 0) # XVViewer will be prioritised
|
||||
|
||||
:param viewer: The viewer to be registered.
|
||||
:param order:
|
||||
Zero or a negative integer to prepend this viewer to the list,
|
||||
a positive integer to append it.
|
||||
"""
|
||||
if isinstance(viewer, type) and issubclass(viewer, Viewer):
|
||||
viewer = viewer()
|
||||
if order > 0:
|
||||
_viewers.append(viewer)
|
||||
else:
|
||||
_viewers.insert(0, viewer)
|
||||
|
||||
|
||||
def show(image: Image.Image, title: str | None = None, **options: Any) -> bool:
|
||||
r"""
|
||||
Display a given image.
|
||||
|
||||
:param image: An image object.
|
||||
:param title: Optional title. Not all viewers can display the title.
|
||||
:param \**options: Additional viewer options.
|
||||
:returns: ``True`` if a suitable viewer was found, ``False`` otherwise.
|
||||
"""
|
||||
for viewer in _viewers:
|
||||
if viewer.show(image, title=title, **options):
|
||||
return True
|
||||
return False
|
||||
|
||||
|
||||
class Viewer:
|
||||
"""Base class for viewers."""
|
||||
|
||||
# main api
|
||||
|
||||
def show(self, image: Image.Image, **options: Any) -> int:
|
||||
"""
|
||||
The main function for displaying an image.
|
||||
Converts the given image to the target format and displays it.
|
||||
"""
|
||||
|
||||
if not (
|
||||
image.mode in ("1", "RGBA")
|
||||
or (self.format == "PNG" and image.mode in ("I;16", "LA"))
|
||||
):
|
||||
base = Image.getmodebase(image.mode)
|
||||
if image.mode != base:
|
||||
image = image.convert(base)
|
||||
|
||||
return self.show_image(image, **options)
|
||||
|
||||
# hook methods
|
||||
|
||||
format: str | None = None
|
||||
"""The format to convert the image into."""
|
||||
options: dict[str, Any] = {}
|
||||
"""Additional options used to convert the image."""
|
||||
|
||||
def get_format(self, image: Image.Image) -> str | None:
|
||||
"""Return format name, or ``None`` to save as PGM/PPM."""
|
||||
return self.format
|
||||
|
||||
def get_command(self, file: str, **options: Any) -> str:
|
||||
"""
|
||||
Returns the command used to display the file.
|
||||
Not implemented in the base class.
|
||||
"""
|
||||
msg = "unavailable in base viewer"
|
||||
raise NotImplementedError(msg)
|
||||
|
||||
def save_image(self, image: Image.Image) -> str:
|
||||
"""Save to temporary file and return filename."""
|
||||
return image._dump(format=self.get_format(image), **self.options)
|
||||
|
||||
def show_image(self, image: Image.Image, **options: Any) -> int:
|
||||
"""Display the given image."""
|
||||
return self.show_file(self.save_image(image), **options)
|
||||
|
||||
def show_file(self, path: str, **options: Any) -> int:
|
||||
"""
|
||||
Display given file.
|
||||
"""
|
||||
if not os.path.exists(path):
|
||||
raise FileNotFoundError
|
||||
os.system(self.get_command(path, **options)) # nosec
|
||||
return 1
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
class WindowsViewer(Viewer):
|
||||
"""The default viewer on Windows is the default system application for PNG files."""
|
||||
|
||||
format = "PNG"
|
||||
options = {"compress_level": 1, "save_all": True}
|
||||
|
||||
def get_command(self, file: str, **options: Any) -> str:
|
||||
return (
|
||||
f'start "Pillow" /WAIT "{file}" '
|
||||
"&& ping -n 4 127.0.0.1 >NUL "
|
||||
f'&& del /f "{file}"'
|
||||
)
|
||||
|
||||
def show_file(self, path: str, **options: Any) -> int:
|
||||
"""
|
||||
Display given file.
|
||||
"""
|
||||
if not os.path.exists(path):
|
||||
raise FileNotFoundError
|
||||
subprocess.Popen(
|
||||
self.get_command(path, **options),
|
||||
shell=True,
|
||||
creationflags=getattr(subprocess, "CREATE_NO_WINDOW"),
|
||||
) # nosec
|
||||
return 1
|
||||
|
||||
|
||||
if sys.platform == "win32":
|
||||
register(WindowsViewer)
|
||||
|
||||
|
||||
class MacViewer(Viewer):
|
||||
"""The default viewer on macOS using ``Preview.app``."""
|
||||
|
||||
format = "PNG"
|
||||
options = {"compress_level": 1, "save_all": True}
|
||||
|
||||
def get_command(self, file: str, **options: Any) -> str:
|
||||
# on darwin open returns immediately resulting in the temp
|
||||
# file removal while app is opening
|
||||
command = "open -a Preview.app"
|
||||
command = f"({command} {quote(file)}; sleep 20; rm -f {quote(file)})&"
|
||||
return command
|
||||
|
||||
def show_file(self, path: str, **options: Any) -> int:
|
||||
"""
|
||||
Display given file.
|
||||
"""
|
||||
if not os.path.exists(path):
|
||||
raise FileNotFoundError
|
||||
subprocess.call(["open", "-a", "Preview.app", path])
|
||||
|
||||
pyinstaller = getattr(sys, "frozen", False) and hasattr(sys, "_MEIPASS")
|
||||
executable = (not pyinstaller and sys.executable) or shutil.which("python3")
|
||||
if executable:
|
||||
subprocess.Popen(
|
||||
[
|
||||
executable,
|
||||
"-c",
|
||||
"import os, sys, time; time.sleep(20); os.remove(sys.argv[1])",
|
||||
path,
|
||||
]
|
||||
)
|
||||
return 1
|
||||
|
||||
|
||||
if sys.platform == "darwin":
|
||||
register(MacViewer)
|
||||
|
||||
|
||||
class UnixViewer(abc.ABC, Viewer):
|
||||
format = "PNG"
|
||||
options = {"compress_level": 1, "save_all": True}
|
||||
|
||||
@abc.abstractmethod
|
||||
def get_command_ex(self, file: str, **options: Any) -> tuple[str, str]:
|
||||
pass
|
||||
|
||||
def get_command(self, file: str, **options: Any) -> str:
|
||||
command = self.get_command_ex(file, **options)[0]
|
||||
return f"{command} {quote(file)}"
|
||||
|
||||
|
||||
class XDGViewer(UnixViewer):
|
||||
"""
|
||||
The freedesktop.org ``xdg-open`` command.
|
||||
"""
|
||||
|
||||
def get_command_ex(self, file: str, **options: Any) -> tuple[str, str]:
|
||||
command = executable = "xdg-open"
|
||||
return command, executable
|
||||
|
||||
def show_file(self, path: str, **options: Any) -> int:
|
||||
"""
|
||||
Display given file.
|
||||
"""
|
||||
if not os.path.exists(path):
|
||||
raise FileNotFoundError
|
||||
subprocess.Popen(["xdg-open", path])
|
||||
return 1
|
||||
|
||||
|
||||
class DisplayViewer(UnixViewer):
|
||||
"""
|
||||
The ImageMagick ``display`` command.
|
||||
This viewer supports the ``title`` parameter.
|
||||
"""
|
||||
|
||||
def get_command_ex(
|
||||
self, file: str, title: str | None = None, **options: Any
|
||||
) -> tuple[str, str]:
|
||||
command = executable = "display"
|
||||
if title:
|
||||
command += f" -title {quote(title)}"
|
||||
return command, executable
|
||||
|
||||
def show_file(self, path: str, **options: Any) -> int:
|
||||
"""
|
||||
Display given file.
|
||||
"""
|
||||
if not os.path.exists(path):
|
||||
raise FileNotFoundError
|
||||
args = ["display"]
|
||||
title = options.get("title")
|
||||
if title:
|
||||
args += ["-title", title]
|
||||
args.append(path)
|
||||
|
||||
subprocess.Popen(args)
|
||||
return 1
|
||||
|
||||
|
||||
class GmDisplayViewer(UnixViewer):
|
||||
"""The GraphicsMagick ``gm display`` command."""
|
||||
|
||||
def get_command_ex(self, file: str, **options: Any) -> tuple[str, str]:
|
||||
executable = "gm"
|
||||
command = "gm display"
|
||||
return command, executable
|
||||
|
||||
def show_file(self, path: str, **options: Any) -> int:
|
||||
"""
|
||||
Display given file.
|
||||
"""
|
||||
if not os.path.exists(path):
|
||||
raise FileNotFoundError
|
||||
subprocess.Popen(["gm", "display", path])
|
||||
return 1
|
||||
|
||||
|
||||
class EogViewer(UnixViewer):
|
||||
"""The GNOME Image Viewer ``eog`` command."""
|
||||
|
||||
def get_command_ex(self, file: str, **options: Any) -> tuple[str, str]:
|
||||
executable = "eog"
|
||||
command = "eog -n"
|
||||
return command, executable
|
||||
|
||||
def show_file(self, path: str, **options: Any) -> int:
|
||||
"""
|
||||
Display given file.
|
||||
"""
|
||||
if not os.path.exists(path):
|
||||
raise FileNotFoundError
|
||||
subprocess.Popen(["eog", "-n", path])
|
||||
return 1
|
||||
|
||||
|
||||
class XVViewer(UnixViewer):
|
||||
"""
|
||||
The X Viewer ``xv`` command.
|
||||
This viewer supports the ``title`` parameter.
|
||||
"""
|
||||
|
||||
def get_command_ex(
|
||||
self, file: str, title: str | None = None, **options: Any
|
||||
) -> tuple[str, str]:
|
||||
# note: xv is pretty outdated. most modern systems have
|
||||
# imagemagick's display command instead.
|
||||
command = executable = "xv"
|
||||
if title:
|
||||
command += f" -name {quote(title)}"
|
||||
return command, executable
|
||||
|
||||
def show_file(self, path: str, **options: Any) -> int:
|
||||
"""
|
||||
Display given file.
|
||||
"""
|
||||
if not os.path.exists(path):
|
||||
raise FileNotFoundError
|
||||
args = ["xv"]
|
||||
title = options.get("title")
|
||||
if title:
|
||||
args += ["-name", title]
|
||||
args.append(path)
|
||||
|
||||
subprocess.Popen(args)
|
||||
return 1
|
||||
|
||||
|
||||
if sys.platform not in ("win32", "darwin"): # unixoids
|
||||
if shutil.which("xdg-open"):
|
||||
register(XDGViewer)
|
||||
if shutil.which("display"):
|
||||
register(DisplayViewer)
|
||||
if shutil.which("gm"):
|
||||
register(GmDisplayViewer)
|
||||
if shutil.which("eog"):
|
||||
register(EogViewer)
|
||||
if shutil.which("xv"):
|
||||
register(XVViewer)
|
||||
|
||||
|
||||
class IPythonViewer(Viewer):
|
||||
"""The viewer for IPython frontends."""
|
||||
|
||||
def show_image(self, image: Image.Image, **options: Any) -> int:
|
||||
ipython_display(image)
|
||||
return 1
|
||||
|
||||
|
||||
try:
|
||||
from IPython.display import display as ipython_display
|
||||
except ImportError:
|
||||
pass
|
||||
else:
|
||||
register(IPythonViewer)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
if len(sys.argv) < 2:
|
||||
print("Syntax: python3 ImageShow.py imagefile [title]")
|
||||
sys.exit()
|
||||
|
||||
with Image.open(sys.argv[1]) as im:
|
||||
print(show(im, *sys.argv[2:]))
|
||||
@ -0,0 +1,167 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# global image statistics
|
||||
#
|
||||
# History:
|
||||
# 1996-04-05 fl Created
|
||||
# 1997-05-21 fl Added mask; added rms, var, stddev attributes
|
||||
# 1997-08-05 fl Added median
|
||||
# 1998-07-05 hk Fixed integer overflow error
|
||||
#
|
||||
# Notes:
|
||||
# This class shows how to implement delayed evaluation of attributes.
|
||||
# To get a certain value, simply access the corresponding attribute.
|
||||
# The __getattr__ dispatcher takes care of the rest.
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1996-97.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import math
|
||||
from functools import cached_property
|
||||
|
||||
from . import Image
|
||||
|
||||
|
||||
class Stat:
|
||||
def __init__(
|
||||
self, image_or_list: Image.Image | list[int], mask: Image.Image | None = None
|
||||
) -> None:
|
||||
"""
|
||||
Calculate statistics for the given image. If a mask is included,
|
||||
only the regions covered by that mask are included in the
|
||||
statistics. You can also pass in a previously calculated histogram.
|
||||
|
||||
:param image: A PIL image, or a precalculated histogram.
|
||||
|
||||
.. note::
|
||||
|
||||
For a PIL image, calculations rely on the
|
||||
:py:meth:`~PIL.Image.Image.histogram` method. The pixel counts are
|
||||
grouped into 256 bins, even if the image has more than 8 bits per
|
||||
channel. So ``I`` and ``F`` mode images have a maximum ``mean``,
|
||||
``median`` and ``rms`` of 255, and cannot have an ``extrema`` maximum
|
||||
of more than 255.
|
||||
|
||||
:param mask: An optional mask.
|
||||
"""
|
||||
if isinstance(image_or_list, Image.Image):
|
||||
self.h = image_or_list.histogram(mask)
|
||||
elif isinstance(image_or_list, list):
|
||||
self.h = image_or_list
|
||||
else:
|
||||
msg = "first argument must be image or list" # type: ignore[unreachable]
|
||||
raise TypeError(msg)
|
||||
self.bands = list(range(len(self.h) // 256))
|
||||
|
||||
@cached_property
|
||||
def extrema(self) -> list[tuple[int, int]]:
|
||||
"""
|
||||
Min/max values for each band in the image.
|
||||
|
||||
.. note::
|
||||
This relies on the :py:meth:`~PIL.Image.Image.histogram` method, and
|
||||
simply returns the low and high bins used. This is correct for
|
||||
images with 8 bits per channel, but fails for other modes such as
|
||||
``I`` or ``F``. Instead, use :py:meth:`~PIL.Image.Image.getextrema` to
|
||||
return per-band extrema for the image. This is more correct and
|
||||
efficient because, for non-8-bit modes, the histogram method uses
|
||||
:py:meth:`~PIL.Image.Image.getextrema` to determine the bins used.
|
||||
"""
|
||||
|
||||
def minmax(histogram: list[int]) -> tuple[int, int]:
|
||||
res_min, res_max = 255, 0
|
||||
for i in range(256):
|
||||
if histogram[i]:
|
||||
res_min = i
|
||||
break
|
||||
for i in range(255, -1, -1):
|
||||
if histogram[i]:
|
||||
res_max = i
|
||||
break
|
||||
return res_min, res_max
|
||||
|
||||
return [minmax(self.h[i:]) for i in range(0, len(self.h), 256)]
|
||||
|
||||
@cached_property
|
||||
def count(self) -> list[int]:
|
||||
"""Total number of pixels for each band in the image."""
|
||||
return [sum(self.h[i : i + 256]) for i in range(0, len(self.h), 256)]
|
||||
|
||||
@cached_property
|
||||
def sum(self) -> list[float]:
|
||||
"""Sum of all pixels for each band in the image."""
|
||||
|
||||
v = []
|
||||
for i in range(0, len(self.h), 256):
|
||||
layer_sum = 0.0
|
||||
for j in range(256):
|
||||
layer_sum += j * self.h[i + j]
|
||||
v.append(layer_sum)
|
||||
return v
|
||||
|
||||
@cached_property
|
||||
def sum2(self) -> list[float]:
|
||||
"""Squared sum of all pixels for each band in the image."""
|
||||
|
||||
v = []
|
||||
for i in range(0, len(self.h), 256):
|
||||
sum2 = 0.0
|
||||
for j in range(256):
|
||||
sum2 += (j**2) * float(self.h[i + j])
|
||||
v.append(sum2)
|
||||
return v
|
||||
|
||||
@cached_property
|
||||
def mean(self) -> list[float]:
|
||||
"""Average (arithmetic mean) pixel level for each band in the image."""
|
||||
return [self.sum[i] / self.count[i] if self.count[i] else 0 for i in self.bands]
|
||||
|
||||
@cached_property
|
||||
def median(self) -> list[int]:
|
||||
"""Median pixel level for each band in the image."""
|
||||
|
||||
v = []
|
||||
for i in self.bands:
|
||||
s = 0
|
||||
half = self.count[i] // 2
|
||||
b = i * 256
|
||||
for j in range(256):
|
||||
s = s + self.h[b + j]
|
||||
if s > half:
|
||||
break
|
||||
v.append(j)
|
||||
return v
|
||||
|
||||
@cached_property
|
||||
def rms(self) -> list[float]:
|
||||
"""RMS (root-mean-square) for each band in the image."""
|
||||
return [
|
||||
math.sqrt(self.sum2[i] / self.count[i]) if self.count[i] else 0
|
||||
for i in self.bands
|
||||
]
|
||||
|
||||
@cached_property
|
||||
def var(self) -> list[float]:
|
||||
"""Variance for each band in the image."""
|
||||
return [
|
||||
(
|
||||
(self.sum2[i] - (self.sum[i] ** 2.0) / self.count[i]) / self.count[i]
|
||||
if self.count[i]
|
||||
else 0
|
||||
)
|
||||
for i in self.bands
|
||||
]
|
||||
|
||||
@cached_property
|
||||
def stddev(self) -> list[float]:
|
||||
"""Standard deviation for each band in the image."""
|
||||
return [math.sqrt(self.var[i]) for i in self.bands]
|
||||
|
||||
|
||||
Global = Stat # compatibility
|
||||
@ -0,0 +1,318 @@
|
||||
from __future__ import annotations
|
||||
|
||||
from . import ImageFont
|
||||
from ._typing import _Ink
|
||||
|
||||
|
||||
class Text:
|
||||
def __init__(
|
||||
self,
|
||||
text: str | bytes,
|
||||
font: (
|
||||
ImageFont.ImageFont
|
||||
| ImageFont.FreeTypeFont
|
||||
| ImageFont.TransposedFont
|
||||
| None
|
||||
) = None,
|
||||
mode: str = "RGB",
|
||||
spacing: float = 4,
|
||||
direction: str | None = None,
|
||||
features: list[str] | None = None,
|
||||
language: str | None = None,
|
||||
) -> None:
|
||||
"""
|
||||
:param text: String to be drawn.
|
||||
:param font: Either an :py:class:`~PIL.ImageFont.ImageFont` instance,
|
||||
:py:class:`~PIL.ImageFont.FreeTypeFont` instance,
|
||||
:py:class:`~PIL.ImageFont.TransposedFont` instance or ``None``. If
|
||||
``None``, the default font from :py:meth:`.ImageFont.load_default`
|
||||
will be used.
|
||||
:param mode: The image mode this will be used with.
|
||||
:param spacing: The number of pixels between lines.
|
||||
:param direction: Direction of the text. It can be ``"rtl"`` (right to left),
|
||||
``"ltr"`` (left to right) or ``"ttb"`` (top to bottom).
|
||||
Requires libraqm.
|
||||
:param features: A list of OpenType font features to be used during text
|
||||
layout. This is usually used to turn on optional font features
|
||||
that are not enabled by default, for example ``"dlig"`` or
|
||||
``"ss01"``, but can be also used to turn off default font
|
||||
features, for example ``"-liga"`` to disable ligatures or
|
||||
``"-kern"`` to disable kerning. To get all supported
|
||||
features, see `OpenType docs`_.
|
||||
Requires libraqm.
|
||||
:param language: Language of the text. Different languages may use
|
||||
different glyph shapes or ligatures. This parameter tells
|
||||
the font which language the text is in, and to apply the
|
||||
correct substitutions as appropriate, if available.
|
||||
It should be a `BCP 47 language code`_.
|
||||
Requires libraqm.
|
||||
"""
|
||||
self.text = text
|
||||
self.font = font or ImageFont.load_default()
|
||||
|
||||
self.mode = mode
|
||||
self.spacing = spacing
|
||||
self.direction = direction
|
||||
self.features = features
|
||||
self.language = language
|
||||
|
||||
self.embedded_color = False
|
||||
|
||||
self.stroke_width: float = 0
|
||||
self.stroke_fill: _Ink | None = None
|
||||
|
||||
def embed_color(self) -> None:
|
||||
"""
|
||||
Use embedded color glyphs (COLR, CBDT, SBIX).
|
||||
"""
|
||||
if self.mode not in ("RGB", "RGBA"):
|
||||
msg = "Embedded color supported only in RGB and RGBA modes"
|
||||
raise ValueError(msg)
|
||||
self.embedded_color = True
|
||||
|
||||
def stroke(self, width: float = 0, fill: _Ink | None = None) -> None:
|
||||
"""
|
||||
:param width: The width of the text stroke.
|
||||
:param fill: Color to use for the text stroke when drawing. If not given, will
|
||||
default to the ``fill`` parameter from
|
||||
:py:meth:`.ImageDraw.ImageDraw.text`.
|
||||
"""
|
||||
self.stroke_width = width
|
||||
self.stroke_fill = fill
|
||||
|
||||
def _get_fontmode(self) -> str:
|
||||
if self.mode in ("1", "P", "I", "F"):
|
||||
return "1"
|
||||
elif self.embedded_color:
|
||||
return "RGBA"
|
||||
else:
|
||||
return "L"
|
||||
|
||||
def get_length(self):
|
||||
"""
|
||||
Returns length (in pixels with 1/64 precision) of text.
|
||||
|
||||
This is the amount by which following text should be offset.
|
||||
Text bounding box may extend past the length in some fonts,
|
||||
e.g. when using italics or accents.
|
||||
|
||||
The result is returned as a float; it is a whole number if using basic layout.
|
||||
|
||||
Note that the sum of two lengths may not equal the length of a concatenated
|
||||
string due to kerning. If you need to adjust for kerning, include the following
|
||||
character and subtract its length.
|
||||
|
||||
For example, instead of::
|
||||
|
||||
hello = ImageText.Text("Hello", font).get_length()
|
||||
world = ImageText.Text("World", font).get_length()
|
||||
helloworld = ImageText.Text("HelloWorld", font).get_length()
|
||||
assert hello + world == helloworld
|
||||
|
||||
use::
|
||||
|
||||
hello = (
|
||||
ImageText.Text("HelloW", font).get_length() -
|
||||
ImageText.Text("W", font).get_length()
|
||||
) # adjusted for kerning
|
||||
world = ImageText.Text("World", font).get_length()
|
||||
helloworld = ImageText.Text("HelloWorld", font).get_length()
|
||||
assert hello + world == helloworld
|
||||
|
||||
or disable kerning with (requires libraqm)::
|
||||
|
||||
hello = ImageText.Text("Hello", font, features=["-kern"]).get_length()
|
||||
world = ImageText.Text("World", font, features=["-kern"]).get_length()
|
||||
helloworld = ImageText.Text(
|
||||
"HelloWorld", font, features=["-kern"]
|
||||
).get_length()
|
||||
assert hello + world == helloworld
|
||||
|
||||
:return: Either width for horizontal text, or height for vertical text.
|
||||
"""
|
||||
split_character = "\n" if isinstance(self.text, str) else b"\n"
|
||||
if split_character in self.text:
|
||||
msg = "can't measure length of multiline text"
|
||||
raise ValueError(msg)
|
||||
return self.font.getlength(
|
||||
self.text,
|
||||
self._get_fontmode(),
|
||||
self.direction,
|
||||
self.features,
|
||||
self.language,
|
||||
)
|
||||
|
||||
def _split(
|
||||
self, xy: tuple[float, float], anchor: str | None, align: str
|
||||
) -> list[tuple[tuple[float, float], str, str | bytes]]:
|
||||
if anchor is None:
|
||||
anchor = "lt" if self.direction == "ttb" else "la"
|
||||
elif len(anchor) != 2:
|
||||
msg = "anchor must be a 2 character string"
|
||||
raise ValueError(msg)
|
||||
|
||||
lines = (
|
||||
self.text.split("\n")
|
||||
if isinstance(self.text, str)
|
||||
else self.text.split(b"\n")
|
||||
)
|
||||
if len(lines) == 1:
|
||||
return [(xy, anchor, self.text)]
|
||||
|
||||
if anchor[1] in "tb" and self.direction != "ttb":
|
||||
msg = "anchor not supported for multiline text"
|
||||
raise ValueError(msg)
|
||||
|
||||
fontmode = self._get_fontmode()
|
||||
line_spacing = (
|
||||
self.font.getbbox(
|
||||
"A",
|
||||
fontmode,
|
||||
None,
|
||||
self.features,
|
||||
self.language,
|
||||
self.stroke_width,
|
||||
)[3]
|
||||
+ self.stroke_width
|
||||
+ self.spacing
|
||||
)
|
||||
|
||||
top = xy[1]
|
||||
parts = []
|
||||
if self.direction == "ttb":
|
||||
left = xy[0]
|
||||
for line in lines:
|
||||
parts.append(((left, top), anchor, line))
|
||||
left += line_spacing
|
||||
else:
|
||||
widths = []
|
||||
max_width: float = 0
|
||||
for line in lines:
|
||||
line_width = self.font.getlength(
|
||||
line, fontmode, self.direction, self.features, self.language
|
||||
)
|
||||
widths.append(line_width)
|
||||
max_width = max(max_width, line_width)
|
||||
|
||||
if anchor[1] == "m":
|
||||
top -= (len(lines) - 1) * line_spacing / 2.0
|
||||
elif anchor[1] == "d":
|
||||
top -= (len(lines) - 1) * line_spacing
|
||||
|
||||
idx = -1
|
||||
for line in lines:
|
||||
left = xy[0]
|
||||
idx += 1
|
||||
width_difference = max_width - widths[idx]
|
||||
|
||||
# align by align parameter
|
||||
if align in ("left", "justify"):
|
||||
pass
|
||||
elif align == "center":
|
||||
left += width_difference / 2.0
|
||||
elif align == "right":
|
||||
left += width_difference
|
||||
else:
|
||||
msg = 'align must be "left", "center", "right" or "justify"'
|
||||
raise ValueError(msg)
|
||||
|
||||
if (
|
||||
align == "justify"
|
||||
and width_difference != 0
|
||||
and idx != len(lines) - 1
|
||||
):
|
||||
words = (
|
||||
line.split(" ") if isinstance(line, str) else line.split(b" ")
|
||||
)
|
||||
if len(words) > 1:
|
||||
# align left by anchor
|
||||
if anchor[0] == "m":
|
||||
left -= max_width / 2.0
|
||||
elif anchor[0] == "r":
|
||||
left -= max_width
|
||||
|
||||
word_widths = [
|
||||
self.font.getlength(
|
||||
word,
|
||||
fontmode,
|
||||
self.direction,
|
||||
self.features,
|
||||
self.language,
|
||||
)
|
||||
for word in words
|
||||
]
|
||||
word_anchor = "l" + anchor[1]
|
||||
width_difference = max_width - sum(word_widths)
|
||||
i = 0
|
||||
for word in words:
|
||||
parts.append(((left, top), word_anchor, word))
|
||||
left += word_widths[i] + width_difference / (len(words) - 1)
|
||||
i += 1
|
||||
top += line_spacing
|
||||
continue
|
||||
|
||||
# align left by anchor
|
||||
if anchor[0] == "m":
|
||||
left -= width_difference / 2.0
|
||||
elif anchor[0] == "r":
|
||||
left -= width_difference
|
||||
parts.append(((left, top), anchor, line))
|
||||
top += line_spacing
|
||||
|
||||
return parts
|
||||
|
||||
def get_bbox(
|
||||
self,
|
||||
xy: tuple[float, float] = (0, 0),
|
||||
anchor: str | None = None,
|
||||
align: str = "left",
|
||||
) -> tuple[float, float, float, float]:
|
||||
"""
|
||||
Returns bounding box (in pixels) of text.
|
||||
|
||||
Use :py:meth:`get_length` to get the offset of following text with 1/64 pixel
|
||||
precision. The bounding box includes extra margins for some fonts, e.g. italics
|
||||
or accents.
|
||||
|
||||
:param xy: The anchor coordinates of the text.
|
||||
:param anchor: The text anchor alignment. Determines the relative location of
|
||||
the anchor to the text. The default alignment is top left,
|
||||
specifically ``la`` for horizontal text and ``lt`` for
|
||||
vertical text. See :ref:`text-anchors` for details.
|
||||
:param align: For multiline text, ``"left"``, ``"center"``, ``"right"`` or
|
||||
``"justify"`` determines the relative alignment of lines. Use the
|
||||
``anchor`` parameter to specify the alignment to ``xy``.
|
||||
|
||||
:return: ``(left, top, right, bottom)`` bounding box
|
||||
"""
|
||||
bbox: tuple[float, float, float, float] | None = None
|
||||
fontmode = self._get_fontmode()
|
||||
for xy, anchor, line in self._split(xy, anchor, align):
|
||||
bbox_line = self.font.getbbox(
|
||||
line,
|
||||
fontmode,
|
||||
self.direction,
|
||||
self.features,
|
||||
self.language,
|
||||
self.stroke_width,
|
||||
anchor,
|
||||
)
|
||||
bbox_line = (
|
||||
bbox_line[0] + xy[0],
|
||||
bbox_line[1] + xy[1],
|
||||
bbox_line[2] + xy[0],
|
||||
bbox_line[3] + xy[1],
|
||||
)
|
||||
if bbox is None:
|
||||
bbox = bbox_line
|
||||
else:
|
||||
bbox = (
|
||||
min(bbox[0], bbox_line[0]),
|
||||
min(bbox[1], bbox_line[1]),
|
||||
max(bbox[2], bbox_line[2]),
|
||||
max(bbox[3], bbox_line[3]),
|
||||
)
|
||||
|
||||
if bbox is None:
|
||||
return xy[0], xy[1], xy[0], xy[1]
|
||||
return bbox
|
||||
@ -0,0 +1,266 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# a Tk display interface
|
||||
#
|
||||
# History:
|
||||
# 96-04-08 fl Created
|
||||
# 96-09-06 fl Added getimage method
|
||||
# 96-11-01 fl Rewritten, removed image attribute and crop method
|
||||
# 97-05-09 fl Use PyImagingPaste method instead of image type
|
||||
# 97-05-12 fl Minor tweaks to match the IFUNC95 interface
|
||||
# 97-05-17 fl Support the "pilbitmap" booster patch
|
||||
# 97-06-05 fl Added file= and data= argument to image constructors
|
||||
# 98-03-09 fl Added width and height methods to Image classes
|
||||
# 98-07-02 fl Use default mode for "P" images without palette attribute
|
||||
# 98-07-02 fl Explicitly destroy Tkinter image objects
|
||||
# 99-07-24 fl Support multiple Tk interpreters (from Greg Couch)
|
||||
# 99-07-26 fl Automatically hook into Tkinter (if possible)
|
||||
# 99-08-15 fl Hook uses _imagingtk instead of _imaging
|
||||
#
|
||||
# Copyright (c) 1997-1999 by Secret Labs AB
|
||||
# Copyright (c) 1996-1997 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import tkinter
|
||||
from io import BytesIO
|
||||
from typing import Any
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from ._typing import CapsuleType
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# Check for Tkinter interface hooks
|
||||
|
||||
|
||||
def _get_image_from_kw(kw: dict[str, Any]) -> ImageFile.ImageFile | None:
|
||||
source = None
|
||||
if "file" in kw:
|
||||
source = kw.pop("file")
|
||||
elif "data" in kw:
|
||||
source = BytesIO(kw.pop("data"))
|
||||
if not source:
|
||||
return None
|
||||
return Image.open(source)
|
||||
|
||||
|
||||
def _pyimagingtkcall(
|
||||
command: str, photo: PhotoImage | tkinter.PhotoImage, ptr: CapsuleType
|
||||
) -> None:
|
||||
tk = photo.tk
|
||||
try:
|
||||
tk.call(command, photo, repr(ptr))
|
||||
except tkinter.TclError:
|
||||
# activate Tkinter hook
|
||||
# may raise an error if it cannot attach to Tkinter
|
||||
from . import _imagingtk
|
||||
|
||||
_imagingtk.tkinit(tk.interpaddr())
|
||||
tk.call(command, photo, repr(ptr))
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# PhotoImage
|
||||
|
||||
|
||||
class PhotoImage:
|
||||
"""
|
||||
A Tkinter-compatible photo image. This can be used
|
||||
everywhere Tkinter expects an image object. If the image is an RGBA
|
||||
image, pixels having alpha 0 are treated as transparent.
|
||||
|
||||
The constructor takes either a PIL image, or a mode and a size.
|
||||
Alternatively, you can use the ``file`` or ``data`` options to initialize
|
||||
the photo image object.
|
||||
|
||||
:param image: Either a PIL image, or a mode string. If a mode string is
|
||||
used, a size must also be given.
|
||||
:param size: If the first argument is a mode string, this defines the size
|
||||
of the image.
|
||||
:keyword file: A filename to load the image from (using
|
||||
``Image.open(file)``).
|
||||
:keyword data: An 8-bit string containing image data (as loaded from an
|
||||
image file).
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self,
|
||||
image: Image.Image | str | None = None,
|
||||
size: tuple[int, int] | None = None,
|
||||
**kw: Any,
|
||||
) -> None:
|
||||
# Tk compatibility: file or data
|
||||
if image is None:
|
||||
image = _get_image_from_kw(kw)
|
||||
|
||||
if image is None:
|
||||
msg = "Image is required"
|
||||
raise ValueError(msg)
|
||||
elif isinstance(image, str):
|
||||
mode = image
|
||||
image = None
|
||||
|
||||
if size is None:
|
||||
msg = "If first argument is mode, size is required"
|
||||
raise ValueError(msg)
|
||||
else:
|
||||
# got an image instead of a mode
|
||||
mode = image.mode
|
||||
if mode == "P":
|
||||
# palette mapped data
|
||||
image.apply_transparency()
|
||||
image.load()
|
||||
mode = image.palette.mode if image.palette else "RGB"
|
||||
size = image.size
|
||||
kw["width"], kw["height"] = size
|
||||
|
||||
if mode not in ["1", "L", "RGB", "RGBA"]:
|
||||
mode = Image.getmodebase(mode)
|
||||
|
||||
self.__mode = mode
|
||||
self.__size = size
|
||||
self.__photo = tkinter.PhotoImage(**kw)
|
||||
self.tk = self.__photo.tk
|
||||
if image:
|
||||
self.paste(image)
|
||||
|
||||
def __del__(self) -> None:
|
||||
try:
|
||||
name = self.__photo.name
|
||||
except AttributeError:
|
||||
return
|
||||
self.__photo.name = None
|
||||
try:
|
||||
self.__photo.tk.call("image", "delete", name)
|
||||
except Exception:
|
||||
pass # ignore internal errors
|
||||
|
||||
def __str__(self) -> str:
|
||||
"""
|
||||
Get the Tkinter photo image identifier. This method is automatically
|
||||
called by Tkinter whenever a PhotoImage object is passed to a Tkinter
|
||||
method.
|
||||
|
||||
:return: A Tkinter photo image identifier (a string).
|
||||
"""
|
||||
return str(self.__photo)
|
||||
|
||||
def width(self) -> int:
|
||||
"""
|
||||
Get the width of the image.
|
||||
|
||||
:return: The width, in pixels.
|
||||
"""
|
||||
return self.__size[0]
|
||||
|
||||
def height(self) -> int:
|
||||
"""
|
||||
Get the height of the image.
|
||||
|
||||
:return: The height, in pixels.
|
||||
"""
|
||||
return self.__size[1]
|
||||
|
||||
def paste(self, im: Image.Image) -> None:
|
||||
"""
|
||||
Paste a PIL image into the photo image. Note that this can
|
||||
be very slow if the photo image is displayed.
|
||||
|
||||
:param im: A PIL image. The size must match the target region. If the
|
||||
mode does not match, the image is converted to the mode of
|
||||
the bitmap image.
|
||||
"""
|
||||
# convert to blittable
|
||||
ptr = im.getim()
|
||||
image = im.im
|
||||
if not image.isblock() or im.mode != self.__mode:
|
||||
block = Image.core.new_block(self.__mode, im.size)
|
||||
image.convert2(block, image) # convert directly between buffers
|
||||
ptr = block.ptr
|
||||
|
||||
_pyimagingtkcall("PyImagingPhoto", self.__photo, ptr)
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# BitmapImage
|
||||
|
||||
|
||||
class BitmapImage:
|
||||
"""
|
||||
A Tkinter-compatible bitmap image. This can be used everywhere Tkinter
|
||||
expects an image object.
|
||||
|
||||
The given image must have mode "1". Pixels having value 0 are treated as
|
||||
transparent. Options, if any, are passed on to Tkinter. The most commonly
|
||||
used option is ``foreground``, which is used to specify the color for the
|
||||
non-transparent parts. See the Tkinter documentation for information on
|
||||
how to specify colours.
|
||||
|
||||
:param image: A PIL image.
|
||||
"""
|
||||
|
||||
def __init__(self, image: Image.Image | None = None, **kw: Any) -> None:
|
||||
# Tk compatibility: file or data
|
||||
if image is None:
|
||||
image = _get_image_from_kw(kw)
|
||||
|
||||
if image is None:
|
||||
msg = "Image is required"
|
||||
raise ValueError(msg)
|
||||
self.__mode = image.mode
|
||||
self.__size = image.size
|
||||
|
||||
self.__photo = tkinter.BitmapImage(data=image.tobitmap(), **kw)
|
||||
|
||||
def __del__(self) -> None:
|
||||
try:
|
||||
name = self.__photo.name
|
||||
except AttributeError:
|
||||
return
|
||||
self.__photo.name = None
|
||||
try:
|
||||
self.__photo.tk.call("image", "delete", name)
|
||||
except Exception:
|
||||
pass # ignore internal errors
|
||||
|
||||
def width(self) -> int:
|
||||
"""
|
||||
Get the width of the image.
|
||||
|
||||
:return: The width, in pixels.
|
||||
"""
|
||||
return self.__size[0]
|
||||
|
||||
def height(self) -> int:
|
||||
"""
|
||||
Get the height of the image.
|
||||
|
||||
:return: The height, in pixels.
|
||||
"""
|
||||
return self.__size[1]
|
||||
|
||||
def __str__(self) -> str:
|
||||
"""
|
||||
Get the Tkinter bitmap image identifier. This method is automatically
|
||||
called by Tkinter whenever a BitmapImage object is passed to a Tkinter
|
||||
method.
|
||||
|
||||
:return: A Tkinter bitmap image identifier (a string).
|
||||
"""
|
||||
return str(self.__photo)
|
||||
|
||||
|
||||
def getimage(photo: PhotoImage) -> Image.Image:
|
||||
"""Copies the contents of a PhotoImage to a PIL image memory."""
|
||||
im = Image.new("RGBA", (photo.width(), photo.height()))
|
||||
|
||||
_pyimagingtkcall("PyImagingPhotoGet", photo, im.getim())
|
||||
|
||||
return im
|
||||
@ -0,0 +1,136 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# transform wrappers
|
||||
#
|
||||
# History:
|
||||
# 2002-04-08 fl Created
|
||||
#
|
||||
# Copyright (c) 2002 by Secret Labs AB
|
||||
# Copyright (c) 2002 by Fredrik Lundh
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
from collections.abc import Sequence
|
||||
from typing import Any
|
||||
|
||||
from . import Image
|
||||
|
||||
|
||||
class Transform(Image.ImageTransformHandler):
|
||||
"""Base class for other transforms defined in :py:mod:`~PIL.ImageTransform`."""
|
||||
|
||||
method: Image.Transform
|
||||
|
||||
def __init__(self, data: Sequence[Any]) -> None:
|
||||
self.data = data
|
||||
|
||||
def getdata(self) -> tuple[Image.Transform, Sequence[int]]:
|
||||
return self.method, self.data
|
||||
|
||||
def transform(
|
||||
self,
|
||||
size: tuple[int, int],
|
||||
image: Image.Image,
|
||||
**options: Any,
|
||||
) -> Image.Image:
|
||||
"""Perform the transform. Called from :py:meth:`.Image.transform`."""
|
||||
# can be overridden
|
||||
method, data = self.getdata()
|
||||
return image.transform(size, method, data, **options)
|
||||
|
||||
|
||||
class AffineTransform(Transform):
|
||||
"""
|
||||
Define an affine image transform.
|
||||
|
||||
This function takes a 6-tuple (a, b, c, d, e, f) which contain the first
|
||||
two rows from the inverse of an affine transform matrix. For each pixel
|
||||
(x, y) in the output image, the new value is taken from a position (a x +
|
||||
b y + c, d x + e y + f) in the input image, rounded to nearest pixel.
|
||||
|
||||
This function can be used to scale, translate, rotate, and shear the
|
||||
original image.
|
||||
|
||||
See :py:meth:`.Image.transform`
|
||||
|
||||
:param matrix: A 6-tuple (a, b, c, d, e, f) containing the first two rows
|
||||
from the inverse of an affine transform matrix.
|
||||
"""
|
||||
|
||||
method = Image.Transform.AFFINE
|
||||
|
||||
|
||||
class PerspectiveTransform(Transform):
|
||||
"""
|
||||
Define a perspective image transform.
|
||||
|
||||
This function takes an 8-tuple (a, b, c, d, e, f, g, h). For each pixel
|
||||
(x, y) in the output image, the new value is taken from a position
|
||||
((a x + b y + c) / (g x + h y + 1), (d x + e y + f) / (g x + h y + 1)) in
|
||||
the input image, rounded to nearest pixel.
|
||||
|
||||
This function can be used to scale, translate, rotate, and shear the
|
||||
original image.
|
||||
|
||||
See :py:meth:`.Image.transform`
|
||||
|
||||
:param matrix: An 8-tuple (a, b, c, d, e, f, g, h).
|
||||
"""
|
||||
|
||||
method = Image.Transform.PERSPECTIVE
|
||||
|
||||
|
||||
class ExtentTransform(Transform):
|
||||
"""
|
||||
Define a transform to extract a subregion from an image.
|
||||
|
||||
Maps a rectangle (defined by two corners) from the image to a rectangle of
|
||||
the given size. The resulting image will contain data sampled from between
|
||||
the corners, such that (x0, y0) in the input image will end up at (0,0) in
|
||||
the output image, and (x1, y1) at size.
|
||||
|
||||
This method can be used to crop, stretch, shrink, or mirror an arbitrary
|
||||
rectangle in the current image. It is slightly slower than crop, but about
|
||||
as fast as a corresponding resize operation.
|
||||
|
||||
See :py:meth:`.Image.transform`
|
||||
|
||||
:param bbox: A 4-tuple (x0, y0, x1, y1) which specifies two points in the
|
||||
input image's coordinate system. See :ref:`coordinate-system`.
|
||||
"""
|
||||
|
||||
method = Image.Transform.EXTENT
|
||||
|
||||
|
||||
class QuadTransform(Transform):
|
||||
"""
|
||||
Define a quad image transform.
|
||||
|
||||
Maps a quadrilateral (a region defined by four corners) from the image to a
|
||||
rectangle of the given size.
|
||||
|
||||
See :py:meth:`.Image.transform`
|
||||
|
||||
:param xy: An 8-tuple (x0, y0, x1, y1, x2, y2, x3, y3) which contain the
|
||||
upper left, lower left, lower right, and upper right corner of the
|
||||
source quadrilateral.
|
||||
"""
|
||||
|
||||
method = Image.Transform.QUAD
|
||||
|
||||
|
||||
class MeshTransform(Transform):
|
||||
"""
|
||||
Define a mesh image transform. A mesh transform consists of one or more
|
||||
individual quad transforms.
|
||||
|
||||
See :py:meth:`.Image.transform`
|
||||
|
||||
:param data: A list of (bbox, quad) tuples.
|
||||
"""
|
||||
|
||||
method = Image.Transform.MESH
|
||||
@ -0,0 +1,247 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# a Windows DIB display interface
|
||||
#
|
||||
# History:
|
||||
# 1996-05-20 fl Created
|
||||
# 1996-09-20 fl Fixed subregion exposure
|
||||
# 1997-09-21 fl Added draw primitive (for tzPrint)
|
||||
# 2003-05-21 fl Added experimental Window/ImageWindow classes
|
||||
# 2003-09-05 fl Added fromstring/tostring methods
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997-2003.
|
||||
# Copyright (c) Fredrik Lundh 1996-2003.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
from . import Image
|
||||
|
||||
|
||||
class HDC:
|
||||
"""
|
||||
Wraps an HDC integer. The resulting object can be passed to the
|
||||
:py:meth:`~PIL.ImageWin.Dib.draw` and :py:meth:`~PIL.ImageWin.Dib.expose`
|
||||
methods.
|
||||
"""
|
||||
|
||||
def __init__(self, dc: int) -> None:
|
||||
self.dc = dc
|
||||
|
||||
def __int__(self) -> int:
|
||||
return self.dc
|
||||
|
||||
|
||||
class HWND:
|
||||
"""
|
||||
Wraps an HWND integer. The resulting object can be passed to the
|
||||
:py:meth:`~PIL.ImageWin.Dib.draw` and :py:meth:`~PIL.ImageWin.Dib.expose`
|
||||
methods, instead of a DC.
|
||||
"""
|
||||
|
||||
def __init__(self, wnd: int) -> None:
|
||||
self.wnd = wnd
|
||||
|
||||
def __int__(self) -> int:
|
||||
return self.wnd
|
||||
|
||||
|
||||
class Dib:
|
||||
"""
|
||||
A Windows bitmap with the given mode and size. The mode can be one of "1",
|
||||
"L", "P", or "RGB".
|
||||
|
||||
If the display requires a palette, this constructor creates a suitable
|
||||
palette and associates it with the image. For an "L" image, 128 graylevels
|
||||
are allocated. For an "RGB" image, a 6x6x6 colour cube is used, together
|
||||
with 20 graylevels.
|
||||
|
||||
To make sure that palettes work properly under Windows, you must call the
|
||||
``palette`` method upon certain events from Windows.
|
||||
|
||||
:param image: Either a PIL image, or a mode string. If a mode string is
|
||||
used, a size must also be given. The mode can be one of "1",
|
||||
"L", "P", or "RGB".
|
||||
:param size: If the first argument is a mode string, this
|
||||
defines the size of the image.
|
||||
"""
|
||||
|
||||
def __init__(
|
||||
self, image: Image.Image | str, size: tuple[int, int] | None = None
|
||||
) -> None:
|
||||
if isinstance(image, str):
|
||||
mode = image
|
||||
image = ""
|
||||
if size is None:
|
||||
msg = "If first argument is mode, size is required"
|
||||
raise ValueError(msg)
|
||||
else:
|
||||
mode = image.mode
|
||||
size = image.size
|
||||
if mode not in ["1", "L", "P", "RGB"]:
|
||||
mode = Image.getmodebase(mode)
|
||||
self.image = Image.core.display(mode, size)
|
||||
self.mode = mode
|
||||
self.size = size
|
||||
if image:
|
||||
assert not isinstance(image, str)
|
||||
self.paste(image)
|
||||
|
||||
def expose(self, handle: int | HDC | HWND) -> None:
|
||||
"""
|
||||
Copy the bitmap contents to a device context.
|
||||
|
||||
:param handle: Device context (HDC), cast to a Python integer, or an
|
||||
HDC or HWND instance. In PythonWin, you can use
|
||||
``CDC.GetHandleAttrib()`` to get a suitable handle.
|
||||
"""
|
||||
handle_int = int(handle)
|
||||
if isinstance(handle, HWND):
|
||||
dc = self.image.getdc(handle_int)
|
||||
try:
|
||||
self.image.expose(dc)
|
||||
finally:
|
||||
self.image.releasedc(handle_int, dc)
|
||||
else:
|
||||
self.image.expose(handle_int)
|
||||
|
||||
def draw(
|
||||
self,
|
||||
handle: int | HDC | HWND,
|
||||
dst: tuple[int, int, int, int],
|
||||
src: tuple[int, int, int, int] | None = None,
|
||||
) -> None:
|
||||
"""
|
||||
Same as expose, but allows you to specify where to draw the image, and
|
||||
what part of it to draw.
|
||||
|
||||
The destination and source areas are given as 4-tuple rectangles. If
|
||||
the source is omitted, the entire image is copied. If the source and
|
||||
the destination have different sizes, the image is resized as
|
||||
necessary.
|
||||
"""
|
||||
if src is None:
|
||||
src = (0, 0) + self.size
|
||||
handle_int = int(handle)
|
||||
if isinstance(handle, HWND):
|
||||
dc = self.image.getdc(handle_int)
|
||||
try:
|
||||
self.image.draw(dc, dst, src)
|
||||
finally:
|
||||
self.image.releasedc(handle_int, dc)
|
||||
else:
|
||||
self.image.draw(handle_int, dst, src)
|
||||
|
||||
def query_palette(self, handle: int | HDC | HWND) -> int:
|
||||
"""
|
||||
Installs the palette associated with the image in the given device
|
||||
context.
|
||||
|
||||
This method should be called upon **QUERYNEWPALETTE** and
|
||||
**PALETTECHANGED** events from Windows. If this method returns a
|
||||
non-zero value, one or more display palette entries were changed, and
|
||||
the image should be redrawn.
|
||||
|
||||
:param handle: Device context (HDC), cast to a Python integer, or an
|
||||
HDC or HWND instance.
|
||||
:return: The number of entries that were changed (if one or more entries,
|
||||
this indicates that the image should be redrawn).
|
||||
"""
|
||||
handle_int = int(handle)
|
||||
if isinstance(handle, HWND):
|
||||
handle = self.image.getdc(handle_int)
|
||||
try:
|
||||
result = self.image.query_palette(handle)
|
||||
finally:
|
||||
self.image.releasedc(handle, handle)
|
||||
else:
|
||||
result = self.image.query_palette(handle_int)
|
||||
return result
|
||||
|
||||
def paste(
|
||||
self, im: Image.Image, box: tuple[int, int, int, int] | None = None
|
||||
) -> None:
|
||||
"""
|
||||
Paste a PIL image into the bitmap image.
|
||||
|
||||
:param im: A PIL image. The size must match the target region.
|
||||
If the mode does not match, the image is converted to the
|
||||
mode of the bitmap image.
|
||||
:param box: A 4-tuple defining the left, upper, right, and
|
||||
lower pixel coordinate. See :ref:`coordinate-system`. If
|
||||
None is given instead of a tuple, all of the image is
|
||||
assumed.
|
||||
"""
|
||||
im.load()
|
||||
if self.mode != im.mode:
|
||||
im = im.convert(self.mode)
|
||||
if box:
|
||||
self.image.paste(im.im, box)
|
||||
else:
|
||||
self.image.paste(im.im)
|
||||
|
||||
def frombytes(self, buffer: bytes) -> None:
|
||||
"""
|
||||
Load display memory contents from byte data.
|
||||
|
||||
:param buffer: A buffer containing display data (usually
|
||||
data returned from :py:func:`~PIL.ImageWin.Dib.tobytes`)
|
||||
"""
|
||||
self.image.frombytes(buffer)
|
||||
|
||||
def tobytes(self) -> bytes:
|
||||
"""
|
||||
Copy display memory contents to bytes object.
|
||||
|
||||
:return: A bytes object containing display data.
|
||||
"""
|
||||
return self.image.tobytes()
|
||||
|
||||
|
||||
class Window:
|
||||
"""Create a Window with the given title size."""
|
||||
|
||||
def __init__(
|
||||
self, title: str = "PIL", width: int | None = None, height: int | None = None
|
||||
) -> None:
|
||||
self.hwnd = Image.core.createwindow(
|
||||
title, self.__dispatcher, width or 0, height or 0
|
||||
)
|
||||
|
||||
def __dispatcher(self, action: str, *args: int) -> None:
|
||||
getattr(self, f"ui_handle_{action}")(*args)
|
||||
|
||||
def ui_handle_clear(self, dc: int, x0: int, y0: int, x1: int, y1: int) -> None:
|
||||
pass
|
||||
|
||||
def ui_handle_damage(self, x0: int, y0: int, x1: int, y1: int) -> None:
|
||||
pass
|
||||
|
||||
def ui_handle_destroy(self) -> None:
|
||||
pass
|
||||
|
||||
def ui_handle_repair(self, dc: int, x0: int, y0: int, x1: int, y1: int) -> None:
|
||||
pass
|
||||
|
||||
def ui_handle_resize(self, width: int, height: int) -> None:
|
||||
pass
|
||||
|
||||
def mainloop(self) -> None:
|
||||
Image.core.eventloop()
|
||||
|
||||
|
||||
class ImageWindow(Window):
|
||||
"""Create an image window which displays the given image."""
|
||||
|
||||
def __init__(self, image: Image.Image | Dib, title: str = "PIL") -> None:
|
||||
if not isinstance(image, Dib):
|
||||
image = Dib(image)
|
||||
self.image = image
|
||||
width, height = image.size
|
||||
super().__init__(title, width=width, height=height)
|
||||
|
||||
def ui_handle_repair(self, dc: int, x0: int, y0: int, x1: int, y1: int) -> None:
|
||||
self.image.draw(dc, (x0, y0, x1, y1))
|
||||
@ -0,0 +1,103 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# IM Tools support for PIL
|
||||
#
|
||||
# history:
|
||||
# 1996-05-27 fl Created (read 8-bit images only)
|
||||
# 2001-02-17 fl Use 're' instead of 'regex' (Python 2.1) (0.2)
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997-2001.
|
||||
# Copyright (c) Fredrik Lundh 1996-2001.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import re
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
field = re.compile(rb"([a-z]*) ([^ \r\n]*)")
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for IM Tools images.
|
||||
|
||||
|
||||
class ImtImageFile(ImageFile.ImageFile):
|
||||
format = "IMT"
|
||||
format_description = "IM Tools"
|
||||
|
||||
def _open(self) -> None:
|
||||
# Quick rejection: if there's not a LF among the first
|
||||
# 100 bytes, this is (probably) not a text header.
|
||||
|
||||
assert self.fp is not None
|
||||
|
||||
buffer = self.fp.read(100)
|
||||
if b"\n" not in buffer:
|
||||
msg = "not an IM file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
xsize = ysize = 0
|
||||
|
||||
while True:
|
||||
if buffer:
|
||||
s = buffer[:1]
|
||||
buffer = buffer[1:]
|
||||
else:
|
||||
s = self.fp.read(1)
|
||||
if not s:
|
||||
break
|
||||
|
||||
if s == b"\x0c":
|
||||
# image data begins
|
||||
self.tile = [
|
||||
ImageFile._Tile(
|
||||
"raw",
|
||||
(0, 0) + self.size,
|
||||
self.fp.tell() - len(buffer),
|
||||
self.mode,
|
||||
)
|
||||
]
|
||||
|
||||
break
|
||||
|
||||
else:
|
||||
# read key/value pair
|
||||
if b"\n" not in buffer:
|
||||
buffer += self.fp.read(100)
|
||||
lines = buffer.split(b"\n")
|
||||
s += lines.pop(0)
|
||||
buffer = b"\n".join(lines)
|
||||
if len(s) == 1 or len(s) > 100:
|
||||
break
|
||||
if s[0] == ord(b"*"):
|
||||
continue # comment
|
||||
|
||||
m = field.match(s)
|
||||
if not m:
|
||||
break
|
||||
k, v = m.group(1, 2)
|
||||
if k == b"width":
|
||||
xsize = int(v)
|
||||
self._size = xsize, ysize
|
||||
elif k == b"height":
|
||||
ysize = int(v)
|
||||
self._size = xsize, ysize
|
||||
elif k == b"pixel" and v == b"n8":
|
||||
self._mode = "L"
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
Image.register_open(ImtImageFile.format, ImtImageFile)
|
||||
|
||||
#
|
||||
# no extension registered (".im" is simply too common)
|
||||
@ -0,0 +1,229 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# IPTC/NAA file handling
|
||||
#
|
||||
# history:
|
||||
# 1995-10-01 fl Created
|
||||
# 1998-03-09 fl Cleaned up and added to PIL
|
||||
# 2002-06-18 fl Added getiptcinfo helper
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997-2002.
|
||||
# Copyright (c) Fredrik Lundh 1995.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
from io import BytesIO
|
||||
from typing import cast
|
||||
|
||||
from . import Image, ImageFile
|
||||
from ._binary import i16be as i16
|
||||
from ._binary import i32be as i32
|
||||
|
||||
COMPRESSION = {1: "raw", 5: "jpeg"}
|
||||
|
||||
|
||||
#
|
||||
# Helpers
|
||||
|
||||
|
||||
def _i(c: bytes) -> int:
|
||||
return i32((b"\0\0\0\0" + c)[-4:])
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for IPTC/NAA datastreams. To read IPTC/NAA fields
|
||||
# from TIFF and JPEG files, use the <b>getiptcinfo</b> function.
|
||||
|
||||
|
||||
class IptcImageFile(ImageFile.ImageFile):
|
||||
format = "IPTC"
|
||||
format_description = "IPTC/NAA"
|
||||
|
||||
def getint(self, key: tuple[int, int]) -> int:
|
||||
return _i(self.info[key])
|
||||
|
||||
def field(self) -> tuple[tuple[int, int] | None, int]:
|
||||
#
|
||||
# get a IPTC field header
|
||||
s = self.fp.read(5)
|
||||
if not s.strip(b"\x00"):
|
||||
return None, 0
|
||||
|
||||
tag = s[1], s[2]
|
||||
|
||||
# syntax
|
||||
if s[0] != 0x1C or tag[0] not in [1, 2, 3, 4, 5, 6, 7, 8, 9, 240]:
|
||||
msg = "invalid IPTC/NAA file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
# field size
|
||||
size = s[3]
|
||||
if size > 132:
|
||||
msg = "illegal field length in IPTC/NAA file"
|
||||
raise OSError(msg)
|
||||
elif size == 128:
|
||||
size = 0
|
||||
elif size > 128:
|
||||
size = _i(self.fp.read(size - 128))
|
||||
else:
|
||||
size = i16(s, 3)
|
||||
|
||||
return tag, size
|
||||
|
||||
def _open(self) -> None:
|
||||
# load descriptive fields
|
||||
while True:
|
||||
offset = self.fp.tell()
|
||||
tag, size = self.field()
|
||||
if not tag or tag == (8, 10):
|
||||
break
|
||||
if size:
|
||||
tagdata = self.fp.read(size)
|
||||
else:
|
||||
tagdata = None
|
||||
if tag in self.info:
|
||||
if isinstance(self.info[tag], list):
|
||||
self.info[tag].append(tagdata)
|
||||
else:
|
||||
self.info[tag] = [self.info[tag], tagdata]
|
||||
else:
|
||||
self.info[tag] = tagdata
|
||||
|
||||
# mode
|
||||
layers = self.info[(3, 60)][0]
|
||||
component = self.info[(3, 60)][1]
|
||||
if layers == 1 and not component:
|
||||
self._mode = "L"
|
||||
band = None
|
||||
else:
|
||||
if layers == 3 and component:
|
||||
self._mode = "RGB"
|
||||
elif layers == 4 and component:
|
||||
self._mode = "CMYK"
|
||||
if (3, 65) in self.info:
|
||||
band = self.info[(3, 65)][0] - 1
|
||||
else:
|
||||
band = 0
|
||||
|
||||
# size
|
||||
self._size = self.getint((3, 20)), self.getint((3, 30))
|
||||
|
||||
# compression
|
||||
try:
|
||||
compression = COMPRESSION[self.getint((3, 120))]
|
||||
except KeyError as e:
|
||||
msg = "Unknown IPTC image compression"
|
||||
raise OSError(msg) from e
|
||||
|
||||
# tile
|
||||
if tag == (8, 10):
|
||||
self.tile = [
|
||||
ImageFile._Tile("iptc", (0, 0) + self.size, offset, (compression, band))
|
||||
]
|
||||
|
||||
def load(self) -> Image.core.PixelAccess | None:
|
||||
if self.tile:
|
||||
args = self.tile[0].args
|
||||
assert isinstance(args, tuple)
|
||||
compression, band = args
|
||||
|
||||
self.fp.seek(self.tile[0].offset)
|
||||
|
||||
# Copy image data to temporary file
|
||||
o = BytesIO()
|
||||
if compression == "raw":
|
||||
# To simplify access to the extracted file,
|
||||
# prepend a PPM header
|
||||
o.write(b"P5\n%d %d\n255\n" % self.size)
|
||||
while True:
|
||||
type, size = self.field()
|
||||
if type != (8, 10):
|
||||
break
|
||||
while size > 0:
|
||||
s = self.fp.read(min(size, 8192))
|
||||
if not s:
|
||||
break
|
||||
o.write(s)
|
||||
size -= len(s)
|
||||
|
||||
with Image.open(o) as _im:
|
||||
if band is not None:
|
||||
bands = [Image.new("L", _im.size)] * Image.getmodebands(self.mode)
|
||||
bands[band] = _im
|
||||
_im = Image.merge(self.mode, bands)
|
||||
else:
|
||||
_im.load()
|
||||
self.im = _im.im
|
||||
self.tile = []
|
||||
return ImageFile.ImageFile.load(self)
|
||||
|
||||
|
||||
Image.register_open(IptcImageFile.format, IptcImageFile)
|
||||
|
||||
Image.register_extension(IptcImageFile.format, ".iim")
|
||||
|
||||
|
||||
def getiptcinfo(
|
||||
im: ImageFile.ImageFile,
|
||||
) -> dict[tuple[int, int], bytes | list[bytes]] | None:
|
||||
"""
|
||||
Get IPTC information from TIFF, JPEG, or IPTC file.
|
||||
|
||||
:param im: An image containing IPTC data.
|
||||
:returns: A dictionary containing IPTC information, or None if
|
||||
no IPTC information block was found.
|
||||
"""
|
||||
from . import JpegImagePlugin, TiffImagePlugin
|
||||
|
||||
data = None
|
||||
|
||||
info: dict[tuple[int, int], bytes | list[bytes]] = {}
|
||||
if isinstance(im, IptcImageFile):
|
||||
# return info dictionary right away
|
||||
for k, v in im.info.items():
|
||||
if isinstance(k, tuple):
|
||||
info[k] = v
|
||||
return info
|
||||
|
||||
elif isinstance(im, JpegImagePlugin.JpegImageFile):
|
||||
# extract the IPTC/NAA resource
|
||||
photoshop = im.info.get("photoshop")
|
||||
if photoshop:
|
||||
data = photoshop.get(0x0404)
|
||||
|
||||
elif isinstance(im, TiffImagePlugin.TiffImageFile):
|
||||
# get raw data from the IPTC/NAA tag (PhotoShop tags the data
|
||||
# as 4-byte integers, so we cannot use the get method...)
|
||||
try:
|
||||
data = im.tag_v2._tagdata[TiffImagePlugin.IPTC_NAA_CHUNK]
|
||||
except KeyError:
|
||||
pass
|
||||
|
||||
if data is None:
|
||||
return None # no properties
|
||||
|
||||
# create an IptcImagePlugin object without initializing it
|
||||
class FakeImage:
|
||||
pass
|
||||
|
||||
fake_im = FakeImage()
|
||||
fake_im.__class__ = IptcImageFile # type: ignore[assignment]
|
||||
iptc_im = cast(IptcImageFile, fake_im)
|
||||
|
||||
# parse the IPTC information chunk
|
||||
iptc_im.info = {}
|
||||
iptc_im.fp = BytesIO(data)
|
||||
|
||||
try:
|
||||
iptc_im._open()
|
||||
except (IndexError, KeyError):
|
||||
pass # expected failure
|
||||
|
||||
for k, v in iptc_im.info.items():
|
||||
if isinstance(k, tuple):
|
||||
info[k] = v
|
||||
return info
|
||||
@ -0,0 +1,446 @@
|
||||
#
|
||||
# The Python Imaging Library
|
||||
# $Id$
|
||||
#
|
||||
# JPEG2000 file handling
|
||||
#
|
||||
# History:
|
||||
# 2014-03-12 ajh Created
|
||||
# 2021-06-30 rogermb Extract dpi information from the 'resc' header box
|
||||
#
|
||||
# Copyright (c) 2014 Coriolis Systems Limited
|
||||
# Copyright (c) 2014 Alastair Houghton
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import io
|
||||
import os
|
||||
import struct
|
||||
from typing import cast
|
||||
|
||||
from . import Image, ImageFile, ImagePalette, _binary
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from collections.abc import Callable
|
||||
from typing import IO
|
||||
|
||||
|
||||
class BoxReader:
|
||||
"""
|
||||
A small helper class to read fields stored in JPEG2000 header boxes
|
||||
and to easily step into and read sub-boxes.
|
||||
"""
|
||||
|
||||
def __init__(self, fp: IO[bytes], length: int = -1) -> None:
|
||||
self.fp = fp
|
||||
self.has_length = length >= 0
|
||||
self.length = length
|
||||
self.remaining_in_box = -1
|
||||
|
||||
def _can_read(self, num_bytes: int) -> bool:
|
||||
if self.has_length and self.fp.tell() + num_bytes > self.length:
|
||||
# Outside box: ensure we don't read past the known file length
|
||||
return False
|
||||
if self.remaining_in_box >= 0:
|
||||
# Inside box contents: ensure read does not go past box boundaries
|
||||
return num_bytes <= self.remaining_in_box
|
||||
else:
|
||||
return True # No length known, just read
|
||||
|
||||
def _read_bytes(self, num_bytes: int) -> bytes:
|
||||
if not self._can_read(num_bytes):
|
||||
msg = "Not enough data in header"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
data = self.fp.read(num_bytes)
|
||||
if len(data) < num_bytes:
|
||||
msg = f"Expected to read {num_bytes} bytes but only got {len(data)}."
|
||||
raise OSError(msg)
|
||||
|
||||
if self.remaining_in_box > 0:
|
||||
self.remaining_in_box -= num_bytes
|
||||
return data
|
||||
|
||||
def read_fields(self, field_format: str) -> tuple[int | bytes, ...]:
|
||||
size = struct.calcsize(field_format)
|
||||
data = self._read_bytes(size)
|
||||
return struct.unpack(field_format, data)
|
||||
|
||||
def read_boxes(self) -> BoxReader:
|
||||
size = self.remaining_in_box
|
||||
data = self._read_bytes(size)
|
||||
return BoxReader(io.BytesIO(data), size)
|
||||
|
||||
def has_next_box(self) -> bool:
|
||||
if self.has_length:
|
||||
return self.fp.tell() + self.remaining_in_box < self.length
|
||||
else:
|
||||
return True
|
||||
|
||||
def next_box_type(self) -> bytes:
|
||||
# Skip the rest of the box if it has not been read
|
||||
if self.remaining_in_box > 0:
|
||||
self.fp.seek(self.remaining_in_box, os.SEEK_CUR)
|
||||
self.remaining_in_box = -1
|
||||
|
||||
# Read the length and type of the next box
|
||||
lbox, tbox = cast(tuple[int, bytes], self.read_fields(">I4s"))
|
||||
if lbox == 1:
|
||||
lbox = cast(int, self.read_fields(">Q")[0])
|
||||
hlen = 16
|
||||
else:
|
||||
hlen = 8
|
||||
|
||||
if lbox < hlen or not self._can_read(lbox - hlen):
|
||||
msg = "Invalid header length"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self.remaining_in_box = lbox - hlen
|
||||
return tbox
|
||||
|
||||
|
||||
def _parse_codestream(fp: IO[bytes]) -> tuple[tuple[int, int], str]:
|
||||
"""Parse the JPEG 2000 codestream to extract the size and component
|
||||
count from the SIZ marker segment, returning a PIL (size, mode) tuple."""
|
||||
|
||||
hdr = fp.read(2)
|
||||
lsiz = _binary.i16be(hdr)
|
||||
siz = hdr + fp.read(lsiz - 2)
|
||||
lsiz, rsiz, xsiz, ysiz, xosiz, yosiz, _, _, _, _, csiz = struct.unpack_from(
|
||||
">HHIIIIIIIIH", siz
|
||||
)
|
||||
|
||||
size = (xsiz - xosiz, ysiz - yosiz)
|
||||
if csiz == 1:
|
||||
ssiz = struct.unpack_from(">B", siz, 38)
|
||||
if (ssiz[0] & 0x7F) + 1 > 8:
|
||||
mode = "I;16"
|
||||
else:
|
||||
mode = "L"
|
||||
elif csiz == 2:
|
||||
mode = "LA"
|
||||
elif csiz == 3:
|
||||
mode = "RGB"
|
||||
elif csiz == 4:
|
||||
mode = "RGBA"
|
||||
else:
|
||||
msg = "unable to determine J2K image mode"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
return size, mode
|
||||
|
||||
|
||||
def _res_to_dpi(num: int, denom: int, exp: int) -> float | None:
|
||||
"""Convert JPEG2000's (numerator, denominator, exponent-base-10) resolution,
|
||||
calculated as (num / denom) * 10^exp and stored in dots per meter,
|
||||
to floating-point dots per inch."""
|
||||
if denom == 0:
|
||||
return None
|
||||
return (254 * num * (10**exp)) / (10000 * denom)
|
||||
|
||||
|
||||
def _parse_jp2_header(
|
||||
fp: IO[bytes],
|
||||
) -> tuple[
|
||||
tuple[int, int],
|
||||
str,
|
||||
str | None,
|
||||
tuple[float, float] | None,
|
||||
ImagePalette.ImagePalette | None,
|
||||
]:
|
||||
"""Parse the JP2 header box to extract size, component count,
|
||||
color space information, and optionally DPI information,
|
||||
returning a (size, mode, mimetype, dpi) tuple."""
|
||||
|
||||
# Find the JP2 header box
|
||||
reader = BoxReader(fp)
|
||||
header = None
|
||||
mimetype = None
|
||||
while reader.has_next_box():
|
||||
tbox = reader.next_box_type()
|
||||
|
||||
if tbox == b"jp2h":
|
||||
header = reader.read_boxes()
|
||||
break
|
||||
elif tbox == b"ftyp":
|
||||
if reader.read_fields(">4s")[0] == b"jpx ":
|
||||
mimetype = "image/jpx"
|
||||
assert header is not None
|
||||
|
||||
size = None
|
||||
mode = None
|
||||
bpc = None
|
||||
nc = None
|
||||
dpi = None # 2-tuple of DPI info, or None
|
||||
palette = None
|
||||
|
||||
while header.has_next_box():
|
||||
tbox = header.next_box_type()
|
||||
|
||||
if tbox == b"ihdr":
|
||||
height, width, nc, bpc = header.read_fields(">IIHB")
|
||||
assert isinstance(height, int)
|
||||
assert isinstance(width, int)
|
||||
assert isinstance(bpc, int)
|
||||
size = (width, height)
|
||||
if nc == 1 and (bpc & 0x7F) > 8:
|
||||
mode = "I;16"
|
||||
elif nc == 1:
|
||||
mode = "L"
|
||||
elif nc == 2:
|
||||
mode = "LA"
|
||||
elif nc == 3:
|
||||
mode = "RGB"
|
||||
elif nc == 4:
|
||||
mode = "RGBA"
|
||||
elif tbox == b"colr" and nc == 4:
|
||||
meth, _, _, enumcs = header.read_fields(">BBBI")
|
||||
if meth == 1 and enumcs == 12:
|
||||
mode = "CMYK"
|
||||
elif tbox == b"pclr" and mode in ("L", "LA"):
|
||||
ne, npc = header.read_fields(">HB")
|
||||
assert isinstance(ne, int)
|
||||
assert isinstance(npc, int)
|
||||
max_bitdepth = 0
|
||||
for bitdepth in header.read_fields(">" + ("B" * npc)):
|
||||
assert isinstance(bitdepth, int)
|
||||
if bitdepth > max_bitdepth:
|
||||
max_bitdepth = bitdepth
|
||||
if max_bitdepth <= 8:
|
||||
palette = ImagePalette.ImagePalette("RGBA" if npc == 4 else "RGB")
|
||||
for i in range(ne):
|
||||
color: list[int] = []
|
||||
for value in header.read_fields(">" + ("B" * npc)):
|
||||
assert isinstance(value, int)
|
||||
color.append(value)
|
||||
palette.getcolor(tuple(color))
|
||||
mode = "P" if mode == "L" else "PA"
|
||||
elif tbox == b"res ":
|
||||
res = header.read_boxes()
|
||||
while res.has_next_box():
|
||||
tres = res.next_box_type()
|
||||
if tres == b"resc":
|
||||
vrcn, vrcd, hrcn, hrcd, vrce, hrce = res.read_fields(">HHHHBB")
|
||||
assert isinstance(vrcn, int)
|
||||
assert isinstance(vrcd, int)
|
||||
assert isinstance(hrcn, int)
|
||||
assert isinstance(hrcd, int)
|
||||
assert isinstance(vrce, int)
|
||||
assert isinstance(hrce, int)
|
||||
hres = _res_to_dpi(hrcn, hrcd, hrce)
|
||||
vres = _res_to_dpi(vrcn, vrcd, vrce)
|
||||
if hres is not None and vres is not None:
|
||||
dpi = (hres, vres)
|
||||
break
|
||||
|
||||
if size is None or mode is None:
|
||||
msg = "Malformed JP2 header"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
return size, mode, mimetype, dpi, palette
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for JPEG2000 images.
|
||||
|
||||
|
||||
class Jpeg2KImageFile(ImageFile.ImageFile):
|
||||
format = "JPEG2000"
|
||||
format_description = "JPEG 2000 (ISO 15444)"
|
||||
|
||||
def _open(self) -> None:
|
||||
sig = self.fp.read(4)
|
||||
if sig == b"\xff\x4f\xff\x51":
|
||||
self.codec = "j2k"
|
||||
self._size, self._mode = _parse_codestream(self.fp)
|
||||
self._parse_comment()
|
||||
else:
|
||||
sig = sig + self.fp.read(8)
|
||||
|
||||
if sig == b"\x00\x00\x00\x0cjP \x0d\x0a\x87\x0a":
|
||||
self.codec = "jp2"
|
||||
header = _parse_jp2_header(self.fp)
|
||||
self._size, self._mode, self.custom_mimetype, dpi, self.palette = header
|
||||
if dpi is not None:
|
||||
self.info["dpi"] = dpi
|
||||
if self.fp.read(12).endswith(b"jp2c\xff\x4f\xff\x51"):
|
||||
hdr = self.fp.read(2)
|
||||
length = _binary.i16be(hdr)
|
||||
self.fp.seek(length - 2, os.SEEK_CUR)
|
||||
self._parse_comment()
|
||||
else:
|
||||
msg = "not a JPEG 2000 file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self._reduce = 0
|
||||
self.layers = 0
|
||||
|
||||
fd = -1
|
||||
length = -1
|
||||
|
||||
try:
|
||||
fd = self.fp.fileno()
|
||||
length = os.fstat(fd).st_size
|
||||
except Exception:
|
||||
fd = -1
|
||||
try:
|
||||
pos = self.fp.tell()
|
||||
self.fp.seek(0, io.SEEK_END)
|
||||
length = self.fp.tell()
|
||||
self.fp.seek(pos)
|
||||
except Exception:
|
||||
length = -1
|
||||
|
||||
self.tile = [
|
||||
ImageFile._Tile(
|
||||
"jpeg2k",
|
||||
(0, 0) + self.size,
|
||||
0,
|
||||
(self.codec, self._reduce, self.layers, fd, length),
|
||||
)
|
||||
]
|
||||
|
||||
def _parse_comment(self) -> None:
|
||||
while True:
|
||||
marker = self.fp.read(2)
|
||||
if not marker:
|
||||
break
|
||||
typ = marker[1]
|
||||
if typ in (0x90, 0xD9):
|
||||
# Start of tile or end of codestream
|
||||
break
|
||||
hdr = self.fp.read(2)
|
||||
length = _binary.i16be(hdr)
|
||||
if typ == 0x64:
|
||||
# Comment
|
||||
self.info["comment"] = self.fp.read(length - 2)[2:]
|
||||
break
|
||||
else:
|
||||
self.fp.seek(length - 2, os.SEEK_CUR)
|
||||
|
||||
@property # type: ignore[override]
|
||||
def reduce(
|
||||
self,
|
||||
) -> (
|
||||
Callable[[int | tuple[int, int], tuple[int, int, int, int] | None], Image.Image]
|
||||
| int
|
||||
):
|
||||
# https://github.com/python-pillow/Pillow/issues/4343 found that the
|
||||
# new Image 'reduce' method was shadowed by this plugin's 'reduce'
|
||||
# property. This attempts to allow for both scenarios
|
||||
return self._reduce or super().reduce
|
||||
|
||||
@reduce.setter
|
||||
def reduce(self, value: int) -> None:
|
||||
self._reduce = value
|
||||
|
||||
def load(self) -> Image.core.PixelAccess | None:
|
||||
if self.tile and self._reduce:
|
||||
power = 1 << self._reduce
|
||||
adjust = power >> 1
|
||||
self._size = (
|
||||
int((self.size[0] + adjust) / power),
|
||||
int((self.size[1] + adjust) / power),
|
||||
)
|
||||
|
||||
# Update the reduce and layers settings
|
||||
t = self.tile[0]
|
||||
assert isinstance(t[3], tuple)
|
||||
t3 = (t[3][0], self._reduce, self.layers, t[3][3], t[3][4])
|
||||
self.tile = [ImageFile._Tile(t[0], (0, 0) + self.size, t[2], t3)]
|
||||
|
||||
return ImageFile.ImageFile.load(self)
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(
|
||||
(b"\xff\x4f\xff\x51", b"\x00\x00\x00\x0cjP \x0d\x0a\x87\x0a")
|
||||
)
|
||||
|
||||
|
||||
# ------------------------------------------------------------
|
||||
# Save support
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
# Get the keyword arguments
|
||||
info = im.encoderinfo
|
||||
|
||||
if isinstance(filename, str):
|
||||
filename = filename.encode()
|
||||
if filename.endswith(b".j2k") or info.get("no_jp2", False):
|
||||
kind = "j2k"
|
||||
else:
|
||||
kind = "jp2"
|
||||
|
||||
offset = info.get("offset", None)
|
||||
tile_offset = info.get("tile_offset", None)
|
||||
tile_size = info.get("tile_size", None)
|
||||
quality_mode = info.get("quality_mode", "rates")
|
||||
quality_layers = info.get("quality_layers", None)
|
||||
if quality_layers is not None and not (
|
||||
isinstance(quality_layers, (list, tuple))
|
||||
and all(
|
||||
isinstance(quality_layer, (int, float)) for quality_layer in quality_layers
|
||||
)
|
||||
):
|
||||
msg = "quality_layers must be a sequence of numbers"
|
||||
raise ValueError(msg)
|
||||
|
||||
num_resolutions = info.get("num_resolutions", 0)
|
||||
cblk_size = info.get("codeblock_size", None)
|
||||
precinct_size = info.get("precinct_size", None)
|
||||
irreversible = info.get("irreversible", False)
|
||||
progression = info.get("progression", "LRCP")
|
||||
cinema_mode = info.get("cinema_mode", "no")
|
||||
mct = info.get("mct", 0)
|
||||
signed = info.get("signed", False)
|
||||
comment = info.get("comment")
|
||||
if isinstance(comment, str):
|
||||
comment = comment.encode()
|
||||
plt = info.get("plt", False)
|
||||
|
||||
fd = -1
|
||||
if hasattr(fp, "fileno"):
|
||||
try:
|
||||
fd = fp.fileno()
|
||||
except Exception:
|
||||
fd = -1
|
||||
|
||||
im.encoderconfig = (
|
||||
offset,
|
||||
tile_offset,
|
||||
tile_size,
|
||||
quality_mode,
|
||||
quality_layers,
|
||||
num_resolutions,
|
||||
cblk_size,
|
||||
precinct_size,
|
||||
irreversible,
|
||||
progression,
|
||||
cinema_mode,
|
||||
mct,
|
||||
signed,
|
||||
fd,
|
||||
comment,
|
||||
plt,
|
||||
)
|
||||
|
||||
ImageFile._save(im, fp, [ImageFile._Tile("jpeg2k", (0, 0) + im.size, 0, kind)])
|
||||
|
||||
|
||||
# ------------------------------------------------------------
|
||||
# Registry stuff
|
||||
|
||||
|
||||
Image.register_open(Jpeg2KImageFile.format, Jpeg2KImageFile, _accept)
|
||||
Image.register_save(Jpeg2KImageFile.format, _save)
|
||||
|
||||
Image.register_extensions(
|
||||
Jpeg2KImageFile.format, [".jp2", ".j2k", ".jpc", ".jpf", ".jpx", ".j2c"]
|
||||
)
|
||||
|
||||
Image.register_mime(Jpeg2KImageFile.format, "image/jp2")
|
||||
@ -0,0 +1,888 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# JPEG (JFIF) file handling
|
||||
#
|
||||
# See "Digital Compression and Coding of Continuous-Tone Still Images,
|
||||
# Part 1, Requirements and Guidelines" (CCITT T.81 / ISO 10918-1)
|
||||
#
|
||||
# History:
|
||||
# 1995-09-09 fl Created
|
||||
# 1995-09-13 fl Added full parser
|
||||
# 1996-03-25 fl Added hack to use the IJG command line utilities
|
||||
# 1996-05-05 fl Workaround Photoshop 2.5 CMYK polarity bug
|
||||
# 1996-05-28 fl Added draft support, JFIF version (0.1)
|
||||
# 1996-12-30 fl Added encoder options, added progression property (0.2)
|
||||
# 1997-08-27 fl Save mode 1 images as BW (0.3)
|
||||
# 1998-07-12 fl Added YCbCr to draft and save methods (0.4)
|
||||
# 1998-10-19 fl Don't hang on files using 16-bit DQT's (0.4.1)
|
||||
# 2001-04-16 fl Extract DPI settings from JFIF files (0.4.2)
|
||||
# 2002-07-01 fl Skip pad bytes before markers; identify Exif files (0.4.3)
|
||||
# 2003-04-25 fl Added experimental EXIF decoder (0.5)
|
||||
# 2003-06-06 fl Added experimental EXIF GPSinfo decoder
|
||||
# 2003-09-13 fl Extract COM markers
|
||||
# 2009-09-06 fl Added icc_profile support (from Florian Hoech)
|
||||
# 2009-03-06 fl Changed CMYK handling; always use Adobe polarity (0.6)
|
||||
# 2009-03-08 fl Added subsampling support (from Justin Huff).
|
||||
#
|
||||
# Copyright (c) 1997-2003 by Secret Labs AB.
|
||||
# Copyright (c) 1995-1996 by Fredrik Lundh.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import array
|
||||
import io
|
||||
import math
|
||||
import os
|
||||
import struct
|
||||
import subprocess
|
||||
import sys
|
||||
import tempfile
|
||||
import warnings
|
||||
|
||||
from . import Image, ImageFile
|
||||
from ._binary import i16be as i16
|
||||
from ._binary import i32be as i32
|
||||
from ._binary import o8
|
||||
from ._binary import o16be as o16
|
||||
from .JpegPresets import presets
|
||||
|
||||
TYPE_CHECKING = False
|
||||
if TYPE_CHECKING:
|
||||
from typing import IO, Any
|
||||
|
||||
from .MpoImagePlugin import MpoImageFile
|
||||
|
||||
#
|
||||
# Parser
|
||||
|
||||
|
||||
def Skip(self: JpegImageFile, marker: int) -> None:
|
||||
n = i16(self.fp.read(2)) - 2
|
||||
ImageFile._safe_read(self.fp, n)
|
||||
|
||||
|
||||
def APP(self: JpegImageFile, marker: int) -> None:
|
||||
#
|
||||
# Application marker. Store these in the APP dictionary.
|
||||
# Also look for well-known application markers.
|
||||
|
||||
n = i16(self.fp.read(2)) - 2
|
||||
s = ImageFile._safe_read(self.fp, n)
|
||||
|
||||
app = f"APP{marker & 15}"
|
||||
|
||||
self.app[app] = s # compatibility
|
||||
self.applist.append((app, s))
|
||||
|
||||
if marker == 0xFFE0 and s.startswith(b"JFIF"):
|
||||
# extract JFIF information
|
||||
self.info["jfif"] = version = i16(s, 5) # version
|
||||
self.info["jfif_version"] = divmod(version, 256)
|
||||
# extract JFIF properties
|
||||
try:
|
||||
jfif_unit = s[7]
|
||||
jfif_density = i16(s, 8), i16(s, 10)
|
||||
except Exception:
|
||||
pass
|
||||
else:
|
||||
if jfif_unit == 1:
|
||||
self.info["dpi"] = jfif_density
|
||||
elif jfif_unit == 2: # cm
|
||||
# 1 dpcm = 2.54 dpi
|
||||
self.info["dpi"] = tuple(d * 2.54 for d in jfif_density)
|
||||
self.info["jfif_unit"] = jfif_unit
|
||||
self.info["jfif_density"] = jfif_density
|
||||
elif marker == 0xFFE1 and s.startswith(b"Exif\0\0"):
|
||||
# extract EXIF information
|
||||
if "exif" in self.info:
|
||||
self.info["exif"] += s[6:]
|
||||
else:
|
||||
self.info["exif"] = s
|
||||
self._exif_offset = self.fp.tell() - n + 6
|
||||
elif marker == 0xFFE1 and s.startswith(b"http://ns.adobe.com/xap/1.0/\x00"):
|
||||
self.info["xmp"] = s.split(b"\x00", 1)[1]
|
||||
elif marker == 0xFFE2 and s.startswith(b"FPXR\0"):
|
||||
# extract FlashPix information (incomplete)
|
||||
self.info["flashpix"] = s # FIXME: value will change
|
||||
elif marker == 0xFFE2 and s.startswith(b"ICC_PROFILE\0"):
|
||||
# Since an ICC profile can be larger than the maximum size of
|
||||
# a JPEG marker (64K), we need provisions to split it into
|
||||
# multiple markers. The format defined by the ICC specifies
|
||||
# one or more APP2 markers containing the following data:
|
||||
# Identifying string ASCII "ICC_PROFILE\0" (12 bytes)
|
||||
# Marker sequence number 1, 2, etc (1 byte)
|
||||
# Number of markers Total of APP2's used (1 byte)
|
||||
# Profile data (remainder of APP2 data)
|
||||
# Decoders should use the marker sequence numbers to
|
||||
# reassemble the profile, rather than assuming that the APP2
|
||||
# markers appear in the correct sequence.
|
||||
self.icclist.append(s)
|
||||
elif marker == 0xFFED and s.startswith(b"Photoshop 3.0\x00"):
|
||||
# parse the image resource block
|
||||
offset = 14
|
||||
photoshop = self.info.setdefault("photoshop", {})
|
||||
while s[offset : offset + 4] == b"8BIM":
|
||||
try:
|
||||
offset += 4
|
||||
# resource code
|
||||
code = i16(s, offset)
|
||||
offset += 2
|
||||
# resource name (usually empty)
|
||||
name_len = s[offset]
|
||||
# name = s[offset+1:offset+1+name_len]
|
||||
offset += 1 + name_len
|
||||
offset += offset & 1 # align
|
||||
# resource data block
|
||||
size = i32(s, offset)
|
||||
offset += 4
|
||||
data = s[offset : offset + size]
|
||||
if code == 0x03ED: # ResolutionInfo
|
||||
photoshop[code] = {
|
||||
"XResolution": i32(data, 0) / 65536,
|
||||
"DisplayedUnitsX": i16(data, 4),
|
||||
"YResolution": i32(data, 8) / 65536,
|
||||
"DisplayedUnitsY": i16(data, 12),
|
||||
}
|
||||
else:
|
||||
photoshop[code] = data
|
||||
offset += size
|
||||
offset += offset & 1 # align
|
||||
except struct.error:
|
||||
break # insufficient data
|
||||
|
||||
elif marker == 0xFFEE and s.startswith(b"Adobe"):
|
||||
self.info["adobe"] = i16(s, 5)
|
||||
# extract Adobe custom properties
|
||||
try:
|
||||
adobe_transform = s[11]
|
||||
except IndexError:
|
||||
pass
|
||||
else:
|
||||
self.info["adobe_transform"] = adobe_transform
|
||||
elif marker == 0xFFE2 and s.startswith(b"MPF\0"):
|
||||
# extract MPO information
|
||||
self.info["mp"] = s[4:]
|
||||
# offset is current location minus buffer size
|
||||
# plus constant header size
|
||||
self.info["mpoffset"] = self.fp.tell() - n + 4
|
||||
|
||||
|
||||
def COM(self: JpegImageFile, marker: int) -> None:
|
||||
#
|
||||
# Comment marker. Store these in the APP dictionary.
|
||||
n = i16(self.fp.read(2)) - 2
|
||||
s = ImageFile._safe_read(self.fp, n)
|
||||
|
||||
self.info["comment"] = s
|
||||
self.app["COM"] = s # compatibility
|
||||
self.applist.append(("COM", s))
|
||||
|
||||
|
||||
def SOF(self: JpegImageFile, marker: int) -> None:
|
||||
#
|
||||
# Start of frame marker. Defines the size and mode of the
|
||||
# image. JPEG is colour blind, so we use some simple
|
||||
# heuristics to map the number of layers to an appropriate
|
||||
# mode. Note that this could be made a bit brighter, by
|
||||
# looking for JFIF and Adobe APP markers.
|
||||
|
||||
n = i16(self.fp.read(2)) - 2
|
||||
s = ImageFile._safe_read(self.fp, n)
|
||||
self._size = i16(s, 3), i16(s, 1)
|
||||
if self._im is not None and self.size != self.im.size:
|
||||
self._im = None
|
||||
|
||||
self.bits = s[0]
|
||||
if self.bits != 8:
|
||||
msg = f"cannot handle {self.bits}-bit layers"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self.layers = s[5]
|
||||
if self.layers == 1:
|
||||
self._mode = "L"
|
||||
elif self.layers == 3:
|
||||
self._mode = "RGB"
|
||||
elif self.layers == 4:
|
||||
self._mode = "CMYK"
|
||||
else:
|
||||
msg = f"cannot handle {self.layers}-layer images"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
if marker in [0xFFC2, 0xFFC6, 0xFFCA, 0xFFCE]:
|
||||
self.info["progressive"] = self.info["progression"] = 1
|
||||
|
||||
if self.icclist:
|
||||
# fixup icc profile
|
||||
self.icclist.sort() # sort by sequence number
|
||||
if self.icclist[0][13] == len(self.icclist):
|
||||
profile = [p[14:] for p in self.icclist]
|
||||
icc_profile = b"".join(profile)
|
||||
else:
|
||||
icc_profile = None # wrong number of fragments
|
||||
self.info["icc_profile"] = icc_profile
|
||||
self.icclist = []
|
||||
|
||||
for i in range(6, len(s), 3):
|
||||
t = s[i : i + 3]
|
||||
# 4-tuples: id, vsamp, hsamp, qtable
|
||||
self.layer.append((t[0], t[1] // 16, t[1] & 15, t[2]))
|
||||
|
||||
|
||||
def DQT(self: JpegImageFile, marker: int) -> None:
|
||||
#
|
||||
# Define quantization table. Note that there might be more
|
||||
# than one table in each marker.
|
||||
|
||||
# FIXME: The quantization tables can be used to estimate the
|
||||
# compression quality.
|
||||
|
||||
n = i16(self.fp.read(2)) - 2
|
||||
s = ImageFile._safe_read(self.fp, n)
|
||||
while len(s):
|
||||
v = s[0]
|
||||
precision = 1 if (v // 16 == 0) else 2 # in bytes
|
||||
qt_length = 1 + precision * 64
|
||||
if len(s) < qt_length:
|
||||
msg = "bad quantization table marker"
|
||||
raise SyntaxError(msg)
|
||||
data = array.array("B" if precision == 1 else "H", s[1:qt_length])
|
||||
if sys.byteorder == "little" and precision > 1:
|
||||
data.byteswap() # the values are always big-endian
|
||||
self.quantization[v & 15] = [data[i] for i in zigzag_index]
|
||||
s = s[qt_length:]
|
||||
|
||||
|
||||
#
|
||||
# JPEG marker table
|
||||
|
||||
MARKER = {
|
||||
0xFFC0: ("SOF0", "Baseline DCT", SOF),
|
||||
0xFFC1: ("SOF1", "Extended Sequential DCT", SOF),
|
||||
0xFFC2: ("SOF2", "Progressive DCT", SOF),
|
||||
0xFFC3: ("SOF3", "Spatial lossless", SOF),
|
||||
0xFFC4: ("DHT", "Define Huffman table", Skip),
|
||||
0xFFC5: ("SOF5", "Differential sequential DCT", SOF),
|
||||
0xFFC6: ("SOF6", "Differential progressive DCT", SOF),
|
||||
0xFFC7: ("SOF7", "Differential spatial", SOF),
|
||||
0xFFC8: ("JPG", "Extension", None),
|
||||
0xFFC9: ("SOF9", "Extended sequential DCT (AC)", SOF),
|
||||
0xFFCA: ("SOF10", "Progressive DCT (AC)", SOF),
|
||||
0xFFCB: ("SOF11", "Spatial lossless DCT (AC)", SOF),
|
||||
0xFFCC: ("DAC", "Define arithmetic coding conditioning", Skip),
|
||||
0xFFCD: ("SOF13", "Differential sequential DCT (AC)", SOF),
|
||||
0xFFCE: ("SOF14", "Differential progressive DCT (AC)", SOF),
|
||||
0xFFCF: ("SOF15", "Differential spatial (AC)", SOF),
|
||||
0xFFD0: ("RST0", "Restart 0", None),
|
||||
0xFFD1: ("RST1", "Restart 1", None),
|
||||
0xFFD2: ("RST2", "Restart 2", None),
|
||||
0xFFD3: ("RST3", "Restart 3", None),
|
||||
0xFFD4: ("RST4", "Restart 4", None),
|
||||
0xFFD5: ("RST5", "Restart 5", None),
|
||||
0xFFD6: ("RST6", "Restart 6", None),
|
||||
0xFFD7: ("RST7", "Restart 7", None),
|
||||
0xFFD8: ("SOI", "Start of image", None),
|
||||
0xFFD9: ("EOI", "End of image", None),
|
||||
0xFFDA: ("SOS", "Start of scan", Skip),
|
||||
0xFFDB: ("DQT", "Define quantization table", DQT),
|
||||
0xFFDC: ("DNL", "Define number of lines", Skip),
|
||||
0xFFDD: ("DRI", "Define restart interval", Skip),
|
||||
0xFFDE: ("DHP", "Define hierarchical progression", SOF),
|
||||
0xFFDF: ("EXP", "Expand reference component", Skip),
|
||||
0xFFE0: ("APP0", "Application segment 0", APP),
|
||||
0xFFE1: ("APP1", "Application segment 1", APP),
|
||||
0xFFE2: ("APP2", "Application segment 2", APP),
|
||||
0xFFE3: ("APP3", "Application segment 3", APP),
|
||||
0xFFE4: ("APP4", "Application segment 4", APP),
|
||||
0xFFE5: ("APP5", "Application segment 5", APP),
|
||||
0xFFE6: ("APP6", "Application segment 6", APP),
|
||||
0xFFE7: ("APP7", "Application segment 7", APP),
|
||||
0xFFE8: ("APP8", "Application segment 8", APP),
|
||||
0xFFE9: ("APP9", "Application segment 9", APP),
|
||||
0xFFEA: ("APP10", "Application segment 10", APP),
|
||||
0xFFEB: ("APP11", "Application segment 11", APP),
|
||||
0xFFEC: ("APP12", "Application segment 12", APP),
|
||||
0xFFED: ("APP13", "Application segment 13", APP),
|
||||
0xFFEE: ("APP14", "Application segment 14", APP),
|
||||
0xFFEF: ("APP15", "Application segment 15", APP),
|
||||
0xFFF0: ("JPG0", "Extension 0", None),
|
||||
0xFFF1: ("JPG1", "Extension 1", None),
|
||||
0xFFF2: ("JPG2", "Extension 2", None),
|
||||
0xFFF3: ("JPG3", "Extension 3", None),
|
||||
0xFFF4: ("JPG4", "Extension 4", None),
|
||||
0xFFF5: ("JPG5", "Extension 5", None),
|
||||
0xFFF6: ("JPG6", "Extension 6", None),
|
||||
0xFFF7: ("JPG7", "Extension 7", None),
|
||||
0xFFF8: ("JPG8", "Extension 8", None),
|
||||
0xFFF9: ("JPG9", "Extension 9", None),
|
||||
0xFFFA: ("JPG10", "Extension 10", None),
|
||||
0xFFFB: ("JPG11", "Extension 11", None),
|
||||
0xFFFC: ("JPG12", "Extension 12", None),
|
||||
0xFFFD: ("JPG13", "Extension 13", None),
|
||||
0xFFFE: ("COM", "Comment", COM),
|
||||
}
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
# Magic number was taken from https://en.wikipedia.org/wiki/JPEG
|
||||
return prefix.startswith(b"\xff\xd8\xff")
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for JPEG and JFIF images.
|
||||
|
||||
|
||||
class JpegImageFile(ImageFile.ImageFile):
|
||||
format = "JPEG"
|
||||
format_description = "JPEG (ISO 10918)"
|
||||
|
||||
def _open(self) -> None:
|
||||
s = self.fp.read(3)
|
||||
|
||||
if not _accept(s):
|
||||
msg = "not a JPEG file"
|
||||
raise SyntaxError(msg)
|
||||
s = b"\xff"
|
||||
|
||||
# Create attributes
|
||||
self.bits = self.layers = 0
|
||||
self._exif_offset = 0
|
||||
|
||||
# JPEG specifics (internal)
|
||||
self.layer: list[tuple[int, int, int, int]] = []
|
||||
self._huffman_dc: dict[Any, Any] = {}
|
||||
self._huffman_ac: dict[Any, Any] = {}
|
||||
self.quantization: dict[int, list[int]] = {}
|
||||
self.app: dict[str, bytes] = {} # compatibility
|
||||
self.applist: list[tuple[str, bytes]] = []
|
||||
self.icclist: list[bytes] = []
|
||||
|
||||
while True:
|
||||
i = s[0]
|
||||
if i == 0xFF:
|
||||
s = s + self.fp.read(1)
|
||||
i = i16(s)
|
||||
else:
|
||||
# Skip non-0xFF junk
|
||||
s = self.fp.read(1)
|
||||
continue
|
||||
|
||||
if i in MARKER:
|
||||
name, description, handler = MARKER[i]
|
||||
if handler is not None:
|
||||
handler(self, i)
|
||||
if i == 0xFFDA: # start of scan
|
||||
rawmode = self.mode
|
||||
if self.mode == "CMYK":
|
||||
rawmode = "CMYK;I" # assume adobe conventions
|
||||
self.tile = [
|
||||
ImageFile._Tile("jpeg", (0, 0) + self.size, 0, (rawmode, ""))
|
||||
]
|
||||
# self.__offset = self.fp.tell()
|
||||
break
|
||||
s = self.fp.read(1)
|
||||
elif i in {0, 0xFFFF}:
|
||||
# padded marker or junk; move on
|
||||
s = b"\xff"
|
||||
elif i == 0xFF00: # Skip extraneous data (escaped 0xFF)
|
||||
s = self.fp.read(1)
|
||||
else:
|
||||
msg = "no marker found"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self._read_dpi_from_exif()
|
||||
|
||||
def __getstate__(self) -> list[Any]:
|
||||
return super().__getstate__() + [self.layers, self.layer]
|
||||
|
||||
def __setstate__(self, state: list[Any]) -> None:
|
||||
self.layers, self.layer = state[6:]
|
||||
super().__setstate__(state)
|
||||
|
||||
def load_read(self, read_bytes: int) -> bytes:
|
||||
"""
|
||||
internal: read more image data
|
||||
For premature EOF and LOAD_TRUNCATED_IMAGES adds EOI marker
|
||||
so libjpeg can finish decoding
|
||||
"""
|
||||
s = self.fp.read(read_bytes)
|
||||
|
||||
if not s and ImageFile.LOAD_TRUNCATED_IMAGES and not hasattr(self, "_ended"):
|
||||
# Premature EOF.
|
||||
# Pretend file is finished adding EOI marker
|
||||
self._ended = True
|
||||
return b"\xff\xd9"
|
||||
|
||||
return s
|
||||
|
||||
def draft(
|
||||
self, mode: str | None, size: tuple[int, int] | None
|
||||
) -> tuple[str, tuple[int, int, float, float]] | None:
|
||||
if len(self.tile) != 1:
|
||||
return None
|
||||
|
||||
# Protect from second call
|
||||
if self.decoderconfig:
|
||||
return None
|
||||
|
||||
d, e, o, a = self.tile[0]
|
||||
scale = 1
|
||||
original_size = self.size
|
||||
|
||||
assert isinstance(a, tuple)
|
||||
if a[0] == "RGB" and mode in ["L", "YCbCr"]:
|
||||
self._mode = mode
|
||||
a = mode, ""
|
||||
|
||||
if size:
|
||||
scale = min(self.size[0] // size[0], self.size[1] // size[1])
|
||||
for s in [8, 4, 2, 1]:
|
||||
if scale >= s:
|
||||
break
|
||||
assert e is not None
|
||||
e = (
|
||||
e[0],
|
||||
e[1],
|
||||
(e[2] - e[0] + s - 1) // s + e[0],
|
||||
(e[3] - e[1] + s - 1) // s + e[1],
|
||||
)
|
||||
self._size = ((self.size[0] + s - 1) // s, (self.size[1] + s - 1) // s)
|
||||
scale = s
|
||||
|
||||
self.tile = [ImageFile._Tile(d, e, o, a)]
|
||||
self.decoderconfig = (scale, 0)
|
||||
|
||||
box = (0, 0, original_size[0] / scale, original_size[1] / scale)
|
||||
return self.mode, box
|
||||
|
||||
def load_djpeg(self) -> None:
|
||||
# ALTERNATIVE: handle JPEGs via the IJG command line utilities
|
||||
|
||||
f, path = tempfile.mkstemp()
|
||||
os.close(f)
|
||||
if os.path.exists(self.filename):
|
||||
subprocess.check_call(["djpeg", "-outfile", path, self.filename])
|
||||
else:
|
||||
try:
|
||||
os.unlink(path)
|
||||
except OSError:
|
||||
pass
|
||||
|
||||
msg = "Invalid Filename"
|
||||
raise ValueError(msg)
|
||||
|
||||
try:
|
||||
with Image.open(path) as _im:
|
||||
_im.load()
|
||||
self.im = _im.im
|
||||
finally:
|
||||
try:
|
||||
os.unlink(path)
|
||||
except OSError:
|
||||
pass
|
||||
|
||||
self._mode = self.im.mode
|
||||
self._size = self.im.size
|
||||
|
||||
self.tile = []
|
||||
|
||||
def _getexif(self) -> dict[int, Any] | None:
|
||||
return _getexif(self)
|
||||
|
||||
def _read_dpi_from_exif(self) -> None:
|
||||
# If DPI isn't in JPEG header, fetch from EXIF
|
||||
if "dpi" in self.info or "exif" not in self.info:
|
||||
return
|
||||
try:
|
||||
exif = self.getexif()
|
||||
resolution_unit = exif[0x0128]
|
||||
x_resolution = exif[0x011A]
|
||||
try:
|
||||
dpi = float(x_resolution[0]) / x_resolution[1]
|
||||
except TypeError:
|
||||
dpi = x_resolution
|
||||
if math.isnan(dpi):
|
||||
msg = "DPI is not a number"
|
||||
raise ValueError(msg)
|
||||
if resolution_unit == 3: # cm
|
||||
# 1 dpcm = 2.54 dpi
|
||||
dpi *= 2.54
|
||||
self.info["dpi"] = dpi, dpi
|
||||
except (
|
||||
struct.error, # truncated EXIF
|
||||
KeyError, # dpi not included
|
||||
SyntaxError, # invalid/unreadable EXIF
|
||||
TypeError, # dpi is an invalid float
|
||||
ValueError, # dpi is an invalid float
|
||||
ZeroDivisionError, # invalid dpi rational value
|
||||
):
|
||||
self.info["dpi"] = 72, 72
|
||||
|
||||
def _getmp(self) -> dict[int, Any] | None:
|
||||
return _getmp(self)
|
||||
|
||||
|
||||
def _getexif(self: JpegImageFile) -> dict[int, Any] | None:
|
||||
if "exif" not in self.info:
|
||||
return None
|
||||
return self.getexif()._get_merged_dict()
|
||||
|
||||
|
||||
def _getmp(self: JpegImageFile) -> dict[int, Any] | None:
|
||||
# Extract MP information. This method was inspired by the "highly
|
||||
# experimental" _getexif version that's been in use for years now,
|
||||
# itself based on the ImageFileDirectory class in the TIFF plugin.
|
||||
|
||||
# The MP record essentially consists of a TIFF file embedded in a JPEG
|
||||
# application marker.
|
||||
try:
|
||||
data = self.info["mp"]
|
||||
except KeyError:
|
||||
return None
|
||||
file_contents = io.BytesIO(data)
|
||||
head = file_contents.read(8)
|
||||
endianness = ">" if head.startswith(b"\x4d\x4d\x00\x2a") else "<"
|
||||
# process dictionary
|
||||
from . import TiffImagePlugin
|
||||
|
||||
try:
|
||||
info = TiffImagePlugin.ImageFileDirectory_v2(head)
|
||||
file_contents.seek(info.next)
|
||||
info.load(file_contents)
|
||||
mp = dict(info)
|
||||
except Exception as e:
|
||||
msg = "malformed MP Index (unreadable directory)"
|
||||
raise SyntaxError(msg) from e
|
||||
# it's an error not to have a number of images
|
||||
try:
|
||||
quant = mp[0xB001]
|
||||
except KeyError as e:
|
||||
msg = "malformed MP Index (no number of images)"
|
||||
raise SyntaxError(msg) from e
|
||||
# get MP entries
|
||||
mpentries = []
|
||||
try:
|
||||
rawmpentries = mp[0xB002]
|
||||
for entrynum in range(quant):
|
||||
unpackedentry = struct.unpack_from(
|
||||
f"{endianness}LLLHH", rawmpentries, entrynum * 16
|
||||
)
|
||||
labels = ("Attribute", "Size", "DataOffset", "EntryNo1", "EntryNo2")
|
||||
mpentry = dict(zip(labels, unpackedentry))
|
||||
mpentryattr = {
|
||||
"DependentParentImageFlag": bool(mpentry["Attribute"] & (1 << 31)),
|
||||
"DependentChildImageFlag": bool(mpentry["Attribute"] & (1 << 30)),
|
||||
"RepresentativeImageFlag": bool(mpentry["Attribute"] & (1 << 29)),
|
||||
"Reserved": (mpentry["Attribute"] & (3 << 27)) >> 27,
|
||||
"ImageDataFormat": (mpentry["Attribute"] & (7 << 24)) >> 24,
|
||||
"MPType": mpentry["Attribute"] & 0x00FFFFFF,
|
||||
}
|
||||
if mpentryattr["ImageDataFormat"] == 0:
|
||||
mpentryattr["ImageDataFormat"] = "JPEG"
|
||||
else:
|
||||
msg = "unsupported picture format in MPO"
|
||||
raise SyntaxError(msg)
|
||||
mptypemap = {
|
||||
0x000000: "Undefined",
|
||||
0x010001: "Large Thumbnail (VGA Equivalent)",
|
||||
0x010002: "Large Thumbnail (Full HD Equivalent)",
|
||||
0x020001: "Multi-Frame Image (Panorama)",
|
||||
0x020002: "Multi-Frame Image: (Disparity)",
|
||||
0x020003: "Multi-Frame Image: (Multi-Angle)",
|
||||
0x030000: "Baseline MP Primary Image",
|
||||
}
|
||||
mpentryattr["MPType"] = mptypemap.get(mpentryattr["MPType"], "Unknown")
|
||||
mpentry["Attribute"] = mpentryattr
|
||||
mpentries.append(mpentry)
|
||||
mp[0xB002] = mpentries
|
||||
except KeyError as e:
|
||||
msg = "malformed MP Index (bad MP Entry)"
|
||||
raise SyntaxError(msg) from e
|
||||
# Next we should try and parse the individual image unique ID list;
|
||||
# we don't because I've never seen this actually used in a real MPO
|
||||
# file and so can't test it.
|
||||
return mp
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# stuff to save JPEG files
|
||||
|
||||
RAWMODE = {
|
||||
"1": "L",
|
||||
"L": "L",
|
||||
"RGB": "RGB",
|
||||
"RGBX": "RGB",
|
||||
"CMYK": "CMYK;I", # assume adobe conventions
|
||||
"YCbCr": "YCbCr",
|
||||
}
|
||||
|
||||
# fmt: off
|
||||
zigzag_index = (
|
||||
0, 1, 5, 6, 14, 15, 27, 28,
|
||||
2, 4, 7, 13, 16, 26, 29, 42,
|
||||
3, 8, 12, 17, 25, 30, 41, 43,
|
||||
9, 11, 18, 24, 31, 40, 44, 53,
|
||||
10, 19, 23, 32, 39, 45, 52, 54,
|
||||
20, 22, 33, 38, 46, 51, 55, 60,
|
||||
21, 34, 37, 47, 50, 56, 59, 61,
|
||||
35, 36, 48, 49, 57, 58, 62, 63,
|
||||
)
|
||||
|
||||
samplings = {
|
||||
(1, 1, 1, 1, 1, 1): 0,
|
||||
(2, 1, 1, 1, 1, 1): 1,
|
||||
(2, 2, 1, 1, 1, 1): 2,
|
||||
}
|
||||
# fmt: on
|
||||
|
||||
|
||||
def get_sampling(im: Image.Image) -> int:
|
||||
# There's no subsampling when images have only 1 layer
|
||||
# (grayscale images) or when they are CMYK (4 layers),
|
||||
# so set subsampling to the default value.
|
||||
#
|
||||
# NOTE: currently Pillow can't encode JPEG to YCCK format.
|
||||
# If YCCK support is added in the future, subsampling code will have
|
||||
# to be updated (here and in JpegEncode.c) to deal with 4 layers.
|
||||
if not isinstance(im, JpegImageFile) or im.layers in (1, 4):
|
||||
return -1
|
||||
sampling = im.layer[0][1:3] + im.layer[1][1:3] + im.layer[2][1:3]
|
||||
return samplings.get(sampling, -1)
|
||||
|
||||
|
||||
def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
|
||||
if im.width == 0 or im.height == 0:
|
||||
msg = "cannot write empty image as JPEG"
|
||||
raise ValueError(msg)
|
||||
|
||||
try:
|
||||
rawmode = RAWMODE[im.mode]
|
||||
except KeyError as e:
|
||||
msg = f"cannot write mode {im.mode} as JPEG"
|
||||
raise OSError(msg) from e
|
||||
|
||||
info = im.encoderinfo
|
||||
|
||||
dpi = [round(x) for x in info.get("dpi", (0, 0))]
|
||||
|
||||
quality = info.get("quality", -1)
|
||||
subsampling = info.get("subsampling", -1)
|
||||
qtables = info.get("qtables")
|
||||
|
||||
if quality == "keep":
|
||||
quality = -1
|
||||
subsampling = "keep"
|
||||
qtables = "keep"
|
||||
elif quality in presets:
|
||||
preset = presets[quality]
|
||||
quality = -1
|
||||
subsampling = preset.get("subsampling", -1)
|
||||
qtables = preset.get("quantization")
|
||||
elif not isinstance(quality, int):
|
||||
msg = "Invalid quality setting"
|
||||
raise ValueError(msg)
|
||||
else:
|
||||
if subsampling in presets:
|
||||
subsampling = presets[subsampling].get("subsampling", -1)
|
||||
if isinstance(qtables, str) and qtables in presets:
|
||||
qtables = presets[qtables].get("quantization")
|
||||
|
||||
if subsampling == "4:4:4":
|
||||
subsampling = 0
|
||||
elif subsampling == "4:2:2":
|
||||
subsampling = 1
|
||||
elif subsampling == "4:2:0":
|
||||
subsampling = 2
|
||||
elif subsampling == "4:1:1":
|
||||
# For compatibility. Before Pillow 4.3, 4:1:1 actually meant 4:2:0.
|
||||
# Set 4:2:0 if someone is still using that value.
|
||||
subsampling = 2
|
||||
elif subsampling == "keep":
|
||||
if im.format != "JPEG":
|
||||
msg = "Cannot use 'keep' when original image is not a JPEG"
|
||||
raise ValueError(msg)
|
||||
subsampling = get_sampling(im)
|
||||
|
||||
def validate_qtables(
|
||||
qtables: (
|
||||
str | tuple[list[int], ...] | list[list[int]] | dict[int, list[int]] | None
|
||||
),
|
||||
) -> list[list[int]] | None:
|
||||
if qtables is None:
|
||||
return qtables
|
||||
if isinstance(qtables, str):
|
||||
try:
|
||||
lines = [
|
||||
int(num)
|
||||
for line in qtables.splitlines()
|
||||
for num in line.split("#", 1)[0].split()
|
||||
]
|
||||
except ValueError as e:
|
||||
msg = "Invalid quantization table"
|
||||
raise ValueError(msg) from e
|
||||
else:
|
||||
qtables = [lines[s : s + 64] for s in range(0, len(lines), 64)]
|
||||
if isinstance(qtables, (tuple, list, dict)):
|
||||
if isinstance(qtables, dict):
|
||||
qtables = [
|
||||
qtables[key] for key in range(len(qtables)) if key in qtables
|
||||
]
|
||||
elif isinstance(qtables, tuple):
|
||||
qtables = list(qtables)
|
||||
if not (0 < len(qtables) < 5):
|
||||
msg = "None or too many quantization tables"
|
||||
raise ValueError(msg)
|
||||
for idx, table in enumerate(qtables):
|
||||
try:
|
||||
if len(table) != 64:
|
||||
msg = "Invalid quantization table"
|
||||
raise TypeError(msg)
|
||||
table_array = array.array("H", table)
|
||||
except TypeError as e:
|
||||
msg = "Invalid quantization table"
|
||||
raise ValueError(msg) from e
|
||||
else:
|
||||
qtables[idx] = list(table_array)
|
||||
return qtables
|
||||
|
||||
if qtables == "keep":
|
||||
if im.format != "JPEG":
|
||||
msg = "Cannot use 'keep' when original image is not a JPEG"
|
||||
raise ValueError(msg)
|
||||
qtables = getattr(im, "quantization", None)
|
||||
qtables = validate_qtables(qtables)
|
||||
|
||||
extra = info.get("extra", b"")
|
||||
|
||||
MAX_BYTES_IN_MARKER = 65533
|
||||
if xmp := info.get("xmp"):
|
||||
overhead_len = 29 # b"http://ns.adobe.com/xap/1.0/\x00"
|
||||
max_data_bytes_in_marker = MAX_BYTES_IN_MARKER - overhead_len
|
||||
if len(xmp) > max_data_bytes_in_marker:
|
||||
msg = "XMP data is too long"
|
||||
raise ValueError(msg)
|
||||
size = o16(2 + overhead_len + len(xmp))
|
||||
extra += b"\xff\xe1" + size + b"http://ns.adobe.com/xap/1.0/\x00" + xmp
|
||||
|
||||
if icc_profile := info.get("icc_profile"):
|
||||
overhead_len = 14 # b"ICC_PROFILE\0" + o8(i) + o8(len(markers))
|
||||
max_data_bytes_in_marker = MAX_BYTES_IN_MARKER - overhead_len
|
||||
markers = []
|
||||
while icc_profile:
|
||||
markers.append(icc_profile[:max_data_bytes_in_marker])
|
||||
icc_profile = icc_profile[max_data_bytes_in_marker:]
|
||||
i = 1
|
||||
for marker in markers:
|
||||
size = o16(2 + overhead_len + len(marker))
|
||||
extra += (
|
||||
b"\xff\xe2"
|
||||
+ size
|
||||
+ b"ICC_PROFILE\0"
|
||||
+ o8(i)
|
||||
+ o8(len(markers))
|
||||
+ marker
|
||||
)
|
||||
i += 1
|
||||
|
||||
comment = info.get("comment", im.info.get("comment"))
|
||||
|
||||
# "progressive" is the official name, but older documentation
|
||||
# says "progression"
|
||||
# FIXME: issue a warning if the wrong form is used (post-1.1.7)
|
||||
progressive = info.get("progressive", False) or info.get("progression", False)
|
||||
|
||||
optimize = info.get("optimize", False)
|
||||
|
||||
exif = info.get("exif", b"")
|
||||
if isinstance(exif, Image.Exif):
|
||||
exif = exif.tobytes()
|
||||
if len(exif) > MAX_BYTES_IN_MARKER:
|
||||
msg = "EXIF data is too long"
|
||||
raise ValueError(msg)
|
||||
|
||||
# get keyword arguments
|
||||
im.encoderconfig = (
|
||||
quality,
|
||||
progressive,
|
||||
info.get("smooth", 0),
|
||||
optimize,
|
||||
info.get("keep_rgb", False),
|
||||
info.get("streamtype", 0),
|
||||
dpi,
|
||||
subsampling,
|
||||
info.get("restart_marker_blocks", 0),
|
||||
info.get("restart_marker_rows", 0),
|
||||
qtables,
|
||||
comment,
|
||||
extra,
|
||||
exif,
|
||||
)
|
||||
|
||||
# if we optimize, libjpeg needs a buffer big enough to hold the whole image
|
||||
# in a shot. Guessing on the size, at im.size bytes. (raw pixel size is
|
||||
# channels*size, this is a value that's been used in a django patch.
|
||||
# https://github.com/matthewwithanm/django-imagekit/issues/50
|
||||
if optimize or progressive:
|
||||
# CMYK can be bigger
|
||||
if im.mode == "CMYK":
|
||||
bufsize = 4 * im.size[0] * im.size[1]
|
||||
# keep sets quality to -1, but the actual value may be high.
|
||||
elif quality >= 95 or quality == -1:
|
||||
bufsize = 2 * im.size[0] * im.size[1]
|
||||
else:
|
||||
bufsize = im.size[0] * im.size[1]
|
||||
if exif:
|
||||
bufsize += len(exif) + 5
|
||||
if extra:
|
||||
bufsize += len(extra) + 1
|
||||
else:
|
||||
# The EXIF info needs to be written as one block, + APP1, + one spare byte.
|
||||
# Ensure that our buffer is big enough. Same with the icc_profile block.
|
||||
bufsize = max(len(exif) + 5, len(extra) + 1)
|
||||
|
||||
ImageFile._save(
|
||||
im, fp, [ImageFile._Tile("jpeg", (0, 0) + im.size, 0, rawmode)], bufsize
|
||||
)
|
||||
|
||||
|
||||
##
|
||||
# Factory for making JPEG and MPO instances
|
||||
def jpeg_factory(
|
||||
fp: IO[bytes], filename: str | bytes | None = None
|
||||
) -> JpegImageFile | MpoImageFile:
|
||||
im = JpegImageFile(fp, filename)
|
||||
try:
|
||||
mpheader = im._getmp()
|
||||
if mpheader is not None and mpheader[45057] > 1:
|
||||
for segment, content in im.applist:
|
||||
if segment == "APP1" and b' hdrgm:Version="' in content:
|
||||
# Ultra HDR images are not yet supported
|
||||
return im
|
||||
# It's actually an MPO
|
||||
from .MpoImagePlugin import MpoImageFile
|
||||
|
||||
# Don't reload everything, just convert it.
|
||||
im = MpoImageFile.adopt(im, mpheader)
|
||||
except (TypeError, IndexError):
|
||||
# It is really a JPEG
|
||||
pass
|
||||
except SyntaxError:
|
||||
warnings.warn(
|
||||
"Image appears to be a malformed MPO file, it will be "
|
||||
"interpreted as a base JPEG file"
|
||||
)
|
||||
return im
|
||||
|
||||
|
||||
# ---------------------------------------------------------------------
|
||||
# Registry stuff
|
||||
|
||||
Image.register_open(JpegImageFile.format, jpeg_factory, _accept)
|
||||
Image.register_save(JpegImageFile.format, _save)
|
||||
|
||||
Image.register_extensions(JpegImageFile.format, [".jfif", ".jpe", ".jpg", ".jpeg"])
|
||||
|
||||
Image.register_mime(JpegImageFile.format, "image/jpeg")
|
||||
@ -0,0 +1,242 @@
|
||||
"""
|
||||
JPEG quality settings equivalent to the Photoshop settings.
|
||||
Can be used when saving JPEG files.
|
||||
|
||||
The following presets are available by default:
|
||||
``web_low``, ``web_medium``, ``web_high``, ``web_very_high``, ``web_maximum``,
|
||||
``low``, ``medium``, ``high``, ``maximum``.
|
||||
More presets can be added to the :py:data:`presets` dict if needed.
|
||||
|
||||
To apply the preset, specify::
|
||||
|
||||
quality="preset_name"
|
||||
|
||||
To apply only the quantization table::
|
||||
|
||||
qtables="preset_name"
|
||||
|
||||
To apply only the subsampling setting::
|
||||
|
||||
subsampling="preset_name"
|
||||
|
||||
Example::
|
||||
|
||||
im.save("image_name.jpg", quality="web_high")
|
||||
|
||||
Subsampling
|
||||
-----------
|
||||
|
||||
Subsampling is the practice of encoding images by implementing less resolution
|
||||
for chroma information than for luma information.
|
||||
(ref.: https://en.wikipedia.org/wiki/Chroma_subsampling)
|
||||
|
||||
Possible subsampling values are 0, 1 and 2 that correspond to 4:4:4, 4:2:2 and
|
||||
4:2:0.
|
||||
|
||||
You can get the subsampling of a JPEG with the
|
||||
:func:`.JpegImagePlugin.get_sampling` function.
|
||||
|
||||
In JPEG compressed data a JPEG marker is used instead of an EXIF tag.
|
||||
(ref.: https://exiv2.org/tags.html)
|
||||
|
||||
|
||||
Quantization tables
|
||||
-------------------
|
||||
|
||||
They are values use by the DCT (Discrete cosine transform) to remove
|
||||
*unnecessary* information from the image (the lossy part of the compression).
|
||||
(ref.: https://en.wikipedia.org/wiki/Quantization_matrix#Quantization_matrices,
|
||||
https://en.wikipedia.org/wiki/JPEG#Quantization)
|
||||
|
||||
You can get the quantization tables of a JPEG with::
|
||||
|
||||
im.quantization
|
||||
|
||||
This will return a dict with a number of lists. You can pass this dict
|
||||
directly as the qtables argument when saving a JPEG.
|
||||
|
||||
The quantization table format in presets is a list with sublists. These formats
|
||||
are interchangeable.
|
||||
|
||||
Libjpeg ref.:
|
||||
https://web.archive.org/web/20120328125543/http://www.jpegcameras.com/libjpeg/libjpeg-3.html
|
||||
|
||||
"""
|
||||
|
||||
from __future__ import annotations
|
||||
|
||||
# fmt: off
|
||||
presets = {
|
||||
'web_low': {'subsampling': 2, # "4:2:0"
|
||||
'quantization': [
|
||||
[20, 16, 25, 39, 50, 46, 62, 68,
|
||||
16, 18, 23, 38, 38, 53, 65, 68,
|
||||
25, 23, 31, 38, 53, 65, 68, 68,
|
||||
39, 38, 38, 53, 65, 68, 68, 68,
|
||||
50, 38, 53, 65, 68, 68, 68, 68,
|
||||
46, 53, 65, 68, 68, 68, 68, 68,
|
||||
62, 65, 68, 68, 68, 68, 68, 68,
|
||||
68, 68, 68, 68, 68, 68, 68, 68],
|
||||
[21, 25, 32, 38, 54, 68, 68, 68,
|
||||
25, 28, 24, 38, 54, 68, 68, 68,
|
||||
32, 24, 32, 43, 66, 68, 68, 68,
|
||||
38, 38, 43, 53, 68, 68, 68, 68,
|
||||
54, 54, 66, 68, 68, 68, 68, 68,
|
||||
68, 68, 68, 68, 68, 68, 68, 68,
|
||||
68, 68, 68, 68, 68, 68, 68, 68,
|
||||
68, 68, 68, 68, 68, 68, 68, 68]
|
||||
]},
|
||||
'web_medium': {'subsampling': 2, # "4:2:0"
|
||||
'quantization': [
|
||||
[16, 11, 11, 16, 23, 27, 31, 30,
|
||||
11, 12, 12, 15, 20, 23, 23, 30,
|
||||
11, 12, 13, 16, 23, 26, 35, 47,
|
||||
16, 15, 16, 23, 26, 37, 47, 64,
|
||||
23, 20, 23, 26, 39, 51, 64, 64,
|
||||
27, 23, 26, 37, 51, 64, 64, 64,
|
||||
31, 23, 35, 47, 64, 64, 64, 64,
|
||||
30, 30, 47, 64, 64, 64, 64, 64],
|
||||
[17, 15, 17, 21, 20, 26, 38, 48,
|
||||
15, 19, 18, 17, 20, 26, 35, 43,
|
||||
17, 18, 20, 22, 26, 30, 46, 53,
|
||||
21, 17, 22, 28, 30, 39, 53, 64,
|
||||
20, 20, 26, 30, 39, 48, 64, 64,
|
||||
26, 26, 30, 39, 48, 63, 64, 64,
|
||||
38, 35, 46, 53, 64, 64, 64, 64,
|
||||
48, 43, 53, 64, 64, 64, 64, 64]
|
||||
]},
|
||||
'web_high': {'subsampling': 0, # "4:4:4"
|
||||
'quantization': [
|
||||
[6, 4, 4, 6, 9, 11, 12, 16,
|
||||
4, 5, 5, 6, 8, 10, 12, 12,
|
||||
4, 5, 5, 6, 10, 12, 14, 19,
|
||||
6, 6, 6, 11, 12, 15, 19, 28,
|
||||
9, 8, 10, 12, 16, 20, 27, 31,
|
||||
11, 10, 12, 15, 20, 27, 31, 31,
|
||||
12, 12, 14, 19, 27, 31, 31, 31,
|
||||
16, 12, 19, 28, 31, 31, 31, 31],
|
||||
[7, 7, 13, 24, 26, 31, 31, 31,
|
||||
7, 12, 16, 21, 31, 31, 31, 31,
|
||||
13, 16, 17, 31, 31, 31, 31, 31,
|
||||
24, 21, 31, 31, 31, 31, 31, 31,
|
||||
26, 31, 31, 31, 31, 31, 31, 31,
|
||||
31, 31, 31, 31, 31, 31, 31, 31,
|
||||
31, 31, 31, 31, 31, 31, 31, 31,
|
||||
31, 31, 31, 31, 31, 31, 31, 31]
|
||||
]},
|
||||
'web_very_high': {'subsampling': 0, # "4:4:4"
|
||||
'quantization': [
|
||||
[2, 2, 2, 2, 3, 4, 5, 6,
|
||||
2, 2, 2, 2, 3, 4, 5, 6,
|
||||
2, 2, 2, 2, 4, 5, 7, 9,
|
||||
2, 2, 2, 4, 5, 7, 9, 12,
|
||||
3, 3, 4, 5, 8, 10, 12, 12,
|
||||
4, 4, 5, 7, 10, 12, 12, 12,
|
||||
5, 5, 7, 9, 12, 12, 12, 12,
|
||||
6, 6, 9, 12, 12, 12, 12, 12],
|
||||
[3, 3, 5, 9, 13, 15, 15, 15,
|
||||
3, 4, 6, 11, 14, 12, 12, 12,
|
||||
5, 6, 9, 14, 12, 12, 12, 12,
|
||||
9, 11, 14, 12, 12, 12, 12, 12,
|
||||
13, 14, 12, 12, 12, 12, 12, 12,
|
||||
15, 12, 12, 12, 12, 12, 12, 12,
|
||||
15, 12, 12, 12, 12, 12, 12, 12,
|
||||
15, 12, 12, 12, 12, 12, 12, 12]
|
||||
]},
|
||||
'web_maximum': {'subsampling': 0, # "4:4:4"
|
||||
'quantization': [
|
||||
[1, 1, 1, 1, 1, 1, 1, 1,
|
||||
1, 1, 1, 1, 1, 1, 1, 1,
|
||||
1, 1, 1, 1, 1, 1, 1, 2,
|
||||
1, 1, 1, 1, 1, 1, 2, 2,
|
||||
1, 1, 1, 1, 1, 2, 2, 3,
|
||||
1, 1, 1, 1, 2, 2, 3, 3,
|
||||
1, 1, 1, 2, 2, 3, 3, 3,
|
||||
1, 1, 2, 2, 3, 3, 3, 3],
|
||||
[1, 1, 1, 2, 2, 3, 3, 3,
|
||||
1, 1, 1, 2, 3, 3, 3, 3,
|
||||
1, 1, 1, 3, 3, 3, 3, 3,
|
||||
2, 2, 3, 3, 3, 3, 3, 3,
|
||||
2, 3, 3, 3, 3, 3, 3, 3,
|
||||
3, 3, 3, 3, 3, 3, 3, 3,
|
||||
3, 3, 3, 3, 3, 3, 3, 3,
|
||||
3, 3, 3, 3, 3, 3, 3, 3]
|
||||
]},
|
||||
'low': {'subsampling': 2, # "4:2:0"
|
||||
'quantization': [
|
||||
[18, 14, 14, 21, 30, 35, 34, 17,
|
||||
14, 16, 16, 19, 26, 23, 12, 12,
|
||||
14, 16, 17, 21, 23, 12, 12, 12,
|
||||
21, 19, 21, 23, 12, 12, 12, 12,
|
||||
30, 26, 23, 12, 12, 12, 12, 12,
|
||||
35, 23, 12, 12, 12, 12, 12, 12,
|
||||
34, 12, 12, 12, 12, 12, 12, 12,
|
||||
17, 12, 12, 12, 12, 12, 12, 12],
|
||||
[20, 19, 22, 27, 20, 20, 17, 17,
|
||||
19, 25, 23, 14, 14, 12, 12, 12,
|
||||
22, 23, 14, 14, 12, 12, 12, 12,
|
||||
27, 14, 14, 12, 12, 12, 12, 12,
|
||||
20, 14, 12, 12, 12, 12, 12, 12,
|
||||
20, 12, 12, 12, 12, 12, 12, 12,
|
||||
17, 12, 12, 12, 12, 12, 12, 12,
|
||||
17, 12, 12, 12, 12, 12, 12, 12]
|
||||
]},
|
||||
'medium': {'subsampling': 2, # "4:2:0"
|
||||
'quantization': [
|
||||
[12, 8, 8, 12, 17, 21, 24, 17,
|
||||
8, 9, 9, 11, 15, 19, 12, 12,
|
||||
8, 9, 10, 12, 19, 12, 12, 12,
|
||||
12, 11, 12, 21, 12, 12, 12, 12,
|
||||
17, 15, 19, 12, 12, 12, 12, 12,
|
||||
21, 19, 12, 12, 12, 12, 12, 12,
|
||||
24, 12, 12, 12, 12, 12, 12, 12,
|
||||
17, 12, 12, 12, 12, 12, 12, 12],
|
||||
[13, 11, 13, 16, 20, 20, 17, 17,
|
||||
11, 14, 14, 14, 14, 12, 12, 12,
|
||||
13, 14, 14, 14, 12, 12, 12, 12,
|
||||
16, 14, 14, 12, 12, 12, 12, 12,
|
||||
20, 14, 12, 12, 12, 12, 12, 12,
|
||||
20, 12, 12, 12, 12, 12, 12, 12,
|
||||
17, 12, 12, 12, 12, 12, 12, 12,
|
||||
17, 12, 12, 12, 12, 12, 12, 12]
|
||||
]},
|
||||
'high': {'subsampling': 0, # "4:4:4"
|
||||
'quantization': [
|
||||
[6, 4, 4, 6, 9, 11, 12, 16,
|
||||
4, 5, 5, 6, 8, 10, 12, 12,
|
||||
4, 5, 5, 6, 10, 12, 12, 12,
|
||||
6, 6, 6, 11, 12, 12, 12, 12,
|
||||
9, 8, 10, 12, 12, 12, 12, 12,
|
||||
11, 10, 12, 12, 12, 12, 12, 12,
|
||||
12, 12, 12, 12, 12, 12, 12, 12,
|
||||
16, 12, 12, 12, 12, 12, 12, 12],
|
||||
[7, 7, 13, 24, 20, 20, 17, 17,
|
||||
7, 12, 16, 14, 14, 12, 12, 12,
|
||||
13, 16, 14, 14, 12, 12, 12, 12,
|
||||
24, 14, 14, 12, 12, 12, 12, 12,
|
||||
20, 14, 12, 12, 12, 12, 12, 12,
|
||||
20, 12, 12, 12, 12, 12, 12, 12,
|
||||
17, 12, 12, 12, 12, 12, 12, 12,
|
||||
17, 12, 12, 12, 12, 12, 12, 12]
|
||||
]},
|
||||
'maximum': {'subsampling': 0, # "4:4:4"
|
||||
'quantization': [
|
||||
[2, 2, 2, 2, 3, 4, 5, 6,
|
||||
2, 2, 2, 2, 3, 4, 5, 6,
|
||||
2, 2, 2, 2, 4, 5, 7, 9,
|
||||
2, 2, 2, 4, 5, 7, 9, 12,
|
||||
3, 3, 4, 5, 8, 10, 12, 12,
|
||||
4, 4, 5, 7, 10, 12, 12, 12,
|
||||
5, 5, 7, 9, 12, 12, 12, 12,
|
||||
6, 6, 9, 12, 12, 12, 12, 12],
|
||||
[3, 3, 5, 9, 13, 15, 15, 15,
|
||||
3, 4, 6, 10, 14, 12, 12, 12,
|
||||
5, 6, 9, 14, 12, 12, 12, 12,
|
||||
9, 10, 14, 12, 12, 12, 12, 12,
|
||||
13, 14, 12, 12, 12, 12, 12, 12,
|
||||
15, 12, 12, 12, 12, 12, 12, 12,
|
||||
15, 12, 12, 12, 12, 12, 12, 12,
|
||||
15, 12, 12, 12, 12, 12, 12, 12]
|
||||
]},
|
||||
}
|
||||
# fmt: on
|
||||
@ -0,0 +1,78 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# Basic McIdas support for PIL
|
||||
#
|
||||
# History:
|
||||
# 1997-05-05 fl Created (8-bit images only)
|
||||
# 2009-03-08 fl Added 16/32-bit support.
|
||||
#
|
||||
# Thanks to Richard Jones and Craig Swank for specs and samples.
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1997.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import struct
|
||||
|
||||
from . import Image, ImageFile
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(b"\x00\x00\x00\x00\x00\x00\x00\x04")
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for McIdas area images.
|
||||
|
||||
|
||||
class McIdasImageFile(ImageFile.ImageFile):
|
||||
format = "MCIDAS"
|
||||
format_description = "McIdas area file"
|
||||
|
||||
def _open(self) -> None:
|
||||
# parse area file directory
|
||||
assert self.fp is not None
|
||||
|
||||
s = self.fp.read(256)
|
||||
if not _accept(s) or len(s) != 256:
|
||||
msg = "not an McIdas area file"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self.area_descriptor_raw = s
|
||||
self.area_descriptor = w = [0, *struct.unpack("!64i", s)]
|
||||
|
||||
# get mode
|
||||
if w[11] == 1:
|
||||
mode = rawmode = "L"
|
||||
elif w[11] == 2:
|
||||
mode = rawmode = "I;16B"
|
||||
elif w[11] == 4:
|
||||
# FIXME: add memory map support
|
||||
mode = "I"
|
||||
rawmode = "I;32B"
|
||||
else:
|
||||
msg = "unsupported McIdas format"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self._mode = mode
|
||||
self._size = w[10], w[9]
|
||||
|
||||
offset = w[34] + w[15]
|
||||
stride = w[15] + w[10] * w[11] * w[14]
|
||||
|
||||
self.tile = [
|
||||
ImageFile._Tile("raw", (0, 0) + self.size, offset, (rawmode, stride, 1))
|
||||
]
|
||||
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# registry
|
||||
|
||||
Image.register_open(McIdasImageFile.format, McIdasImageFile, _accept)
|
||||
|
||||
# no default extension
|
||||
@ -0,0 +1,102 @@
|
||||
#
|
||||
# The Python Imaging Library.
|
||||
# $Id$
|
||||
#
|
||||
# Microsoft Image Composer support for PIL
|
||||
#
|
||||
# Notes:
|
||||
# uses TiffImagePlugin.py to read the actual image streams
|
||||
#
|
||||
# History:
|
||||
# 97-01-20 fl Created
|
||||
#
|
||||
# Copyright (c) Secret Labs AB 1997.
|
||||
# Copyright (c) Fredrik Lundh 1997.
|
||||
#
|
||||
# See the README file for information on usage and redistribution.
|
||||
#
|
||||
from __future__ import annotations
|
||||
|
||||
import olefile
|
||||
|
||||
from . import Image, TiffImagePlugin
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
|
||||
def _accept(prefix: bytes) -> bool:
|
||||
return prefix.startswith(olefile.MAGIC)
|
||||
|
||||
|
||||
##
|
||||
# Image plugin for Microsoft's Image Composer file format.
|
||||
|
||||
|
||||
class MicImageFile(TiffImagePlugin.TiffImageFile):
|
||||
format = "MIC"
|
||||
format_description = "Microsoft Image Composer"
|
||||
_close_exclusive_fp_after_loading = False
|
||||
|
||||
def _open(self) -> None:
|
||||
# read the OLE directory and see if this is a likely
|
||||
# to be a Microsoft Image Composer file
|
||||
|
||||
try:
|
||||
self.ole = olefile.OleFileIO(self.fp)
|
||||
except OSError as e:
|
||||
msg = "not an MIC file; invalid OLE file"
|
||||
raise SyntaxError(msg) from e
|
||||
|
||||
# find ACI subfiles with Image members (maybe not the
|
||||
# best way to identify MIC files, but what the... ;-)
|
||||
|
||||
self.images = [
|
||||
path
|
||||
for path in self.ole.listdir()
|
||||
if path[1:] and path[0].endswith(".ACI") and path[1] == "Image"
|
||||
]
|
||||
|
||||
# if we didn't find any images, this is probably not
|
||||
# an MIC file.
|
||||
if not self.images:
|
||||
msg = "not an MIC file; no image entries"
|
||||
raise SyntaxError(msg)
|
||||
|
||||
self.frame = -1
|
||||
self._n_frames = len(self.images)
|
||||
self.is_animated = self._n_frames > 1
|
||||
|
||||
self.__fp = self.fp
|
||||
self.seek(0)
|
||||
|
||||
def seek(self, frame: int) -> None:
|
||||
if not self._seek_check(frame):
|
||||
return
|
||||
filename = self.images[frame]
|
||||
self.fp = self.ole.openstream(filename)
|
||||
|
||||
TiffImagePlugin.TiffImageFile._open(self)
|
||||
|
||||
self.frame = frame
|
||||
|
||||
def tell(self) -> int:
|
||||
return self.frame
|
||||
|
||||
def close(self) -> None:
|
||||
self.__fp.close()
|
||||
self.ole.close()
|
||||
super().close()
|
||||
|
||||
def __exit__(self, *args: object) -> None:
|
||||
self.__fp.close()
|
||||
self.ole.close()
|
||||
super().__exit__()
|
||||
|
||||
|
||||
#
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
Image.register_open(MicImageFile.format, MicImageFile, _accept)
|
||||
|
||||
Image.register_extension(MicImageFile.format, ".mic")
|
||||
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Reference in New Issue
Block a user