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ladybird/Userland/Libraries/LibPDF
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Nico Weber 40780304b8 LibPDF: Add a fastpath for 1bpp grayscale to load_image() 
We used to expand every bit in an 1bpp image to a 0 or 255 byte,
then map that to a float that's either 0.0f or 1.0f (or whatever's
in /DecodeArray), then multiply that by 255.0f to convert it to a
u8 and put that in the rgb channels of a Color.

Now we precompute the two possible outcomes (almost always Black
and White) and do a per-bit lookup.

Reduces time for

    Build/lagom/bin/pdf --render-bench --render-repeats 20 --page 36 \
        ~/Downloads/Flatland.pdf

(the "decoded data cached" case) from 3.3s to 1.1s on my system.

Reduces time for

    Build/lagom/bin/pdf --debugging-stats ~/Downloads/0000/0000231.pdf

(the "need to decode each page" case) from 52s to 43s on my machine.

Also makes paging through PDFs that contain a 1700x2200 pixel CCITT
or JBIG2 bitmap on each page noticeably snappier.
2024-04-02 08:07:46 +02:00
..
Fonts LibPDF+PDFViewer+MacPDF: Don't draw hidden text by default 2024-03-16 13:10:48 -04:00
CMakeLists.txt LibPDF: Implement most of the spec algorithm for picking TrueType glyphs 2024-02-25 15:15:20 +01:00
ColorSpace.cpp LibPDF: Use original error for failing ICC load 2024-02-21 13:37:08 +01:00
ColorSpace.h LibPDF: Make DeviceCMYKColorSpace::the() fallible 2024-02-01 13:42:04 -07:00
CommonNames.cpp LibPDF: Implement support for vertical text for Type0 2024-03-02 12:25:09 +01:00
CommonNames.h LibPDF+LibGfx: Pass jbig2-filtered data to JBIG2ImageDecoderPlugin 2024-03-09 16:01:22 +01:00
Document.cpp LibPDF: Return null for invalid refs, tolerate null objects as outline 2024-01-31 12:10:19 -05:00
Document.h LibPDF: Draw inline images 2023-12-20 12:45:16 -07:00
DocumentParser.cpp LibPDF: Handle indirect reference resolving during parsing more robustly 2024-03-19 19:20:01 -04:00
DocumentParser.h LibPDF: Scan for PDF file start in first 1024 bytes 2024-01-03 10:12:35 +01:00
Encoding.cpp LibPDF: Add a FIXME and a spec comment to Encoding::from_object() 2024-01-04 10:12:11 +01:00
Encoding.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
Encryption.cpp Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
Encryption.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
Error.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
Filter.cpp LibPDF: Plug in the CCITT3 1D decoder and pass corresponding options 2024-03-19 12:22:28 +01:00
Filter.h LibPDF+LibGfx: Support JBIG2s with /JBIG2Globals set 2024-03-09 16:01:22 +01:00
Forward.h
Function.cpp LibPDF: Reorder loops in SampledFunction::evaluate() 2024-02-13 19:45:19 +01:00
Function.h LibPDF: Add scaffolding for function objects 2023-11-06 10:01:05 +01:00
Interpolation.cpp
Interpolation.h
Object.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
ObjectDerivatives.cpp LibPDF: Always treat /Subtype /Image as binary data when dumping 2024-02-05 21:18:19 -05:00
ObjectDerivatives.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
Operator.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
Page.cpp LibPDF: Don't accidentally form new tokens on pages with contents arrays 2023-10-23 13:23:54 -04:00
Page.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
Parser.cpp LibPDF: Handle indirect reference resolving during parsing more robustly 2024-03-19 19:20:01 -04:00
Parser.h LibPDF: Extract Parser::parse_inline_image() 2023-12-22 10:58:54 +01:00
Reader.cpp LibPDF: Add Reader::consume_non_eol_whitespace() 2024-01-04 10:14:30 +01:00
Reader.h LibPDF: Add Reader::consume_non_eol_whitespace() 2024-01-04 10:14:30 +01:00
Reference.h
Renderer.cpp LibPDF: Add a fastpath for 1bpp grayscale to load_image() 2024-04-02 08:07:46 +02:00
Renderer.h LibPDF+PDFViewer+MacPDF: Don't draw hidden text by default 2024-03-16 13:10:48 -04:00
Value.cpp Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
Value.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30
XRefTable.h Everywhere: Rename {Deprecated => Byte}String 2023-12-17 18:25:10 +03:30