1use crate::{ScaledFloat, SourceChromaticities};
2
3/// Get the gamma that should be substituted for images conforming to the sRGB color space.
4pub fn substitute_gamma() -> ScaledFloat {
5 // Value taken from https://www.w3.org/TR/2003/REC-PNG-20031110/#11sRGB
6 ScaledFloat::from_scaled(val:45455)
7}
8
9/// Get the chromaticities that should be substituted for images conforming to the sRGB color space.
10pub fn substitute_chromaticities() -> SourceChromaticities {
11 // Values taken from https://www.w3.org/TR/2003/REC-PNG-20031110/#11sRGB
12 SourceChromaticities {
13 white: (
14 ScaledFloat::from_scaled(val:31270),
15 ScaledFloat::from_scaled(val:32900),
16 ),
17 red: (
18 ScaledFloat::from_scaled(val:64000),
19 ScaledFloat::from_scaled(val:33000),
20 ),
21 green: (
22 ScaledFloat::from_scaled(val:30000),
23 ScaledFloat::from_scaled(val:60000),
24 ),
25 blue: (
26 ScaledFloat::from_scaled(val:15000),
27 ScaledFloat::from_scaled(val:6000),
28 ),
29 }
30}
31