tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0+ */
2
3#ifndef _VKMS_COMPOSER_H_
4#define _VKMS_COMPOSER_H_
5
6#include <kunit/visibility.h>
7#include "vkms_drv.h"
8
9/*
10 * This enum is related to the positions of the variables inside
11 * `struct drm_color_lut`, so the order of both needs to be the same.
12 */
13enum lut_channel {
14 LUT_RED = 0,
15 LUT_GREEN,
16 LUT_BLUE,
17 LUT_RESERVED
18};
19
20#if IS_ENABLED(CONFIG_KUNIT)
21u16 lerp_u16(u16 a, u16 b, s64 t);
22s64 get_lut_index(const struct vkms_color_lut *lut, u16 channel_value);
23u16 apply_lut_to_channel_value(const struct vkms_color_lut *lut, u16 channel_value,
24 enum lut_channel channel);
25void apply_3x4_matrix(struct pixel_argb_s32 *pixel, const struct drm_color_ctm_3x4 *matrix);
26#endif
27
28#endif /* _VKMS_COMPOSER_H_ */