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Clarify pixel order and image completeness

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Dominic Szablewski 2021-12-20 11:56:19 +01:00
parent 013cfa1ecd
commit f752c1a978
1 changed files with 5 additions and 2 deletions
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qoi.h
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@ -91,8 +91,11 @@ struct qoi_header_t {
uint8_t colorspace; // 0 = sRGB with linear alpha, 1 = all channels linear uint8_t colorspace; // 0 = sRGB with linear alpha, 1 = all channels linear
}; };
The decoder and encoder start with {r: 0, g: 0, b: 0, a: 255} as the previous Images are encoded from top to bottom, left to right. The decoder and encoder
pixel value. Pixels are either encoded as start with {r: 0, g: 0, b: 0, a: 255} as the previous pixel value. An image is
complete when all pixels specified by width * height have been covered.
Pixels are encoded as
- a run of the previous pixel - a run of the previous pixel
- an index into an array of previously seen pixels - an index into an array of previously seen pixels
- a difference to the previous pixel value in r,g,b - a difference to the previous pixel value in r,g,b