forked from external-repos/squoosh
bf4d4b78cb
* Add sRGB -> RGB conversion before resize * Add clamping for color space conversions * Clip for demultiplication as well * Fixing linear <-> srgb conversion * Update benchmark * Decouple srgb calculations * Generate lookup tables * Update src/codecs/resize/options.tsx * Defaulting on, renaming, removing redundant state
30 lines
585 B
Rust
30 lines
585 B
Rust
pub trait Clamp: std::cmp::PartialOrd + Sized {
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fn clamp(self, min: Self, max: Self) -> Self {
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if self.lt(&min) {
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min
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} else if self.gt(&max) {
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max
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} else {
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self
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}
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}
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}
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impl Clamp for f32 {}
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pub fn srgb_to_linear(v: f32) -> f32 {
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if v < 0.04045 {
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v / 12.92
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} else {
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((v + 0.055) / 1.055).powf(2.4).clamp(0.0, 1.0)
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}
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}
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pub fn linear_to_srgb(v: f32) -> f32 {
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if v < 0.0031308 {
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v * 12.92
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} else {
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(1.055 * v.powf(1.0 / 2.4) - 0.055).clamp(0.0, 1.0)
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}
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}
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