feat: implement indexed PNG (color type 3) decoding support#98
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nnmrts wants to merge 4 commits intocross-org:mainfrom
Open
feat: implement indexed PNG (color type 3) decoding support#98nnmrts wants to merge 4 commits intocross-org:mainfrom
nnmrts wants to merge 4 commits intocross-org:mainfrom
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Co-authored-by: nnmrts <20396367+nnmrts@users.noreply.github.com>
…dback Co-authored-by: nnmrts <20396367+nnmrts@users.noreply.github.com>
feat: implement indexed PNG (color type 3) decoding support
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Added
Changes
src/formats/png_base.ts—unfilterAndConvert()now accepts an optionalpaletteparameter; handles packed sub-byte scanlines and maps pixel indices to RGBAsrc/formats/png.ts— parses PLTE/tRNS chunks and builds the RGBA palette before decodingsrc/formats/apng.ts— same PLTE/tRNS handling for all APNG frame typestest/formats/png.test.ts— 7 new test cases covering 8-bit, 4-bit, 1-bit indexed color, transparency, and error conditionsCHANGELOG.md— updated[Unreleased]sectionAll 556 tests pass (
deno task precommit).