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3.3 IImagePipeline + ImagePipeline

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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Fritiof Hedman
2026-06-07 14:36:54 +02:00
parent 54755c3808
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IMPLEMENTATION.md
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@@ -103,7 +103,7 @@ Each type lives in `src/FrameProcessor/Domain/`. Tests in `tests/FrameProcessor.
### [x] 3.2 `DitheringRegistry`
- `IReadOnlyDictionary<DitherAlgorithm, IDither>` mapping each enum to the corresponding ImageSharp `KnownDitherings.*`.
### [ ] 3.3 `IImagePipeline` + `ImagePipeline`
### [x] 3.3 `IImagePipeline` + `ImagePipeline`
- Single method: `byte[] Process(Stream input, Frame frame)`.
- Steps (`SPEC.md` §3.2): decode → resize (cover/center-crop to oriented resolution) → dither against display palette → remap pixels display→device → rotate 90° CW if portrait → encode indexed PNG (`PngColorType.Palette`, smallest bit depth fitting the palette, `PaletteQuantizer(deviceColors)`).
- Output dimensions always match the frame's *declared* `width × height` regardless of orientation.