31 lines
1.0 KiB
Rust
31 lines
1.0 KiB
Rust
use crate::{ScaledFloat, SourceChromaticities};
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/// Get the gamma that should be substituted for images conforming to the sRGB color space.
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pub fn substitute_gamma() -> ScaledFloat {
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// Value taken from https://www.w3.org/TR/2003/REC-PNG-20031110/#11sRGB
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ScaledFloat::from_scaled(45455)
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}
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/// Get the chromaticities that should be substituted for images conforming to the sRGB color space.
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pub fn substitute_chromaticities() -> SourceChromaticities {
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// Values taken from https://www.w3.org/TR/2003/REC-PNG-20031110/#11sRGB
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SourceChromaticities {
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white: (
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ScaledFloat::from_scaled(31270),
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ScaledFloat::from_scaled(32900),
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),
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red: (
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ScaledFloat::from_scaled(64000),
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ScaledFloat::from_scaled(33000),
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),
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green: (
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ScaledFloat::from_scaled(30000),
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ScaledFloat::from_scaled(60000),
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),
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blue: (
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ScaledFloat::from_scaled(15000),
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ScaledFloat::from_scaled(6000),
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),
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}
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}
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