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Move unmultiply_inplace to pixels crate (#33553)

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Signed-off-by: Taym <haddadi.taym@gmail.com>
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Taym Haddadi 2024-09-27 05:28:00 +01:00 • committed by GitHub
parent fa0521481b
commit 02953d2fb6
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2 changed files with 10 additions and 10 deletions
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9
components/pixels/lib.rs
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@ -197,6 +197,15 @@ pub fn detect_image_format(buffer: &[u8]) -> Result<ImageFormat, &str> {
}
}
pub fn unmultiply_inplace(pixels: &mut [u8]) {
for rgba in pixels.chunks_mut(4) {
let a = (rgba[3] as f32) / 255.0;
rgba[0] = (rgba[0] as f32 / a) as u8;
rgba[1] = (rgba[1] as f32 / a) as u8;
rgba[2] = (rgba[2] as f32 / a) as u8;
}
}
fn is_gif(buffer: &[u8]) -> bool {
buffer.starts_with(b"GIF87a") || buffer.starts_with(b"GIF89a")
}