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A whole slew of tests for CTM handling that greatly helped in debugging the CTM code. The extent of tests might seem a bit silly but they're fast and might someday help save someone else's day when debugging this. Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com> Signed-off-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Daniel Stone <daniels@collabora.com> Signed-off-by: Simon Ser <contact@emersion.fr> Link: https://patch.msgid.link/20251115000237.3561250-23-alex.hung@amd.com
29 lines
752 B
C
29 lines
752 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#ifndef _VKMS_COMPOSER_H_
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#define _VKMS_COMPOSER_H_
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#include <kunit/visibility.h>
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#include "vkms_drv.h"
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/*
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* This enum is related to the positions of the variables inside
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* `struct drm_color_lut`, so the order of both needs to be the same.
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*/
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enum lut_channel {
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LUT_RED = 0,
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LUT_GREEN,
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LUT_BLUE,
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LUT_RESERVED
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};
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#if IS_ENABLED(CONFIG_KUNIT)
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u16 lerp_u16(u16 a, u16 b, s64 t);
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s64 get_lut_index(const struct vkms_color_lut *lut, u16 channel_value);
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u16 apply_lut_to_channel_value(const struct vkms_color_lut *lut, u16 channel_value,
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enum lut_channel channel);
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void apply_3x4_matrix(struct pixel_argb_s32 *pixel, const struct drm_color_ctm_3x4 *matrix);
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#endif
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#endif /* _VKMS_COMPOSER_H_ */
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