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render/color: introduce wlr_color_transform_eotf

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This commit is contained in:
Félix Poisot 2026-01-31 21:04:51 +00:00
parent 35c35530a3
commit 42cf99a037
4 changed files with 99 additions and 0 deletions
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14
include/render/color.h
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@ -11,6 +11,7 @@ enum wlr_color_transform_type {
COLOR_TRANSFORM_LUT_3X1D,
COLOR_TRANSFORM_MATRIX,
COLOR_TRANSFORM_PIPELINE,
COLOR_TRANSFORM_EOTF,
};
struct wlr_color_transform {
@ -20,6 +21,12 @@ struct wlr_color_transform {
enum wlr_color_transform_type type;
};
struct wlr_color_transform_eotf {
struct wlr_color_transform base;
enum wlr_color_transfer_function tf;
};
struct wlr_color_transform_inverse_eotf {
struct wlr_color_transform base;
@ -72,6 +79,13 @@ void color_transform_lcms2_finish(struct wlr_color_transform_lcms2 *tr);
void color_transform_lcms2_eval(struct wlr_color_transform_lcms2 *tr,
float out[static 3], const float in[static 3]);
/**
* Gets a wlr_color_transform_eotf from a generic wlr_color_transform.
* Asserts that the base type is COLOR_TRANSFORM_EOTF
*/
struct wlr_color_transform_eotf *wlr_color_transform_eotf_from_base(
struct wlr_color_transform *tr);
/**
* Gets a wlr_color_transform_inverse_eotf from a generic wlr_color_transform.
* Asserts that the base type is COLOR_TRANSFORM_INVERSE_EOTF

7
include/wlr/render/color.h
View file

@ -127,6 +127,13 @@ struct wlr_color_transform;
struct wlr_color_transform *wlr_color_transform_init_linear_to_icc(
const void *data, size_t size);
/**
* Initialize a color transformation to apply EOTF decoding. Returns
* NULL on failure.
*/
struct wlr_color_transform *wlr_color_transform_init_eotf_to_linear(
enum wlr_color_transfer_function tf);
/**
* Initialize a color transformation to apply EOTF⁻¹ encoding. Returns
* NULL on failure.