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Message-Id: <20250530-b4-new-color-formats-v4-6-ef5f9f48376c@bootlin.com>
Date: Fri, 30 May 2025 16:06:01 +0200
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Melissa Wen <melissa.srw@...il.com>,
Maíra Canal <mairacanal@...eup.net>,
Haneen Mohammed <hamohammed.sa@...il.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Rodrigo Siqueira <siqueira@...lia.com>,
Simona Vetter <simona.vetter@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, arthurgrillo@...eup.net,
linux-kernel@...r.kernel.org, jeremie.dautheribes@...tlin.com,
miquel.raynal@...tlin.com, thomas.petazzoni@...tlin.com,
seanpaul@...gle.com, nicolejadeyee@...gle.com,
Louis Chauvet <louis.chauvet@...tlin.com>
Subject: [PATCH v4 6/8] drm/vkms: Change YUV helpers to support u16 inputs
for conversion
Some YUV format uses 16 bit values, so change the helper function for
conversion to support those new formats.
Add support for the YUV format P010
Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
drivers/gpu/drm/vkms/tests/vkms_format_test.c | 103 +++++++++++++-------------
drivers/gpu/drm/vkms/vkms_formats.c | 26 ++++---
drivers/gpu/drm/vkms/vkms_formats.h | 4 +-
3 files changed, 68 insertions(+), 65 deletions(-)
diff --git a/drivers/gpu/drm/vkms/tests/vkms_format_test.c b/drivers/gpu/drm/vkms/tests/vkms_format_test.c
index 2e1daef94831..272e18a82f9c 100644
--- a/drivers/gpu/drm/vkms/tests/vkms_format_test.c
+++ b/drivers/gpu/drm/vkms/tests/vkms_format_test.c
@@ -23,7 +23,7 @@ MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");
* machine endianness
*/
struct pixel_yuv_u8 {
- u8 y, u, v;
+ u16 y, u, v;
};
/*
@@ -64,7 +64,7 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
* in_bits = 16,
* in_legal = False,
* in_int = True,
- * out_bits = 8,
+ * out_bits = 16,
* out_legal = False,
* out_int = True)
*
@@ -76,13 +76,13 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
.range = DRM_COLOR_YCBCR_FULL_RANGE,
.n_colors = 6,
.colors = {
- { "white", { 0xff, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
- { "gray", { 0x80, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
- { "black", { 0x00, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
- { "red", { 0x4c, 0x55, 0xff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
- { "green", { 0x96, 0x2c, 0x15 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
- { "blue", { 0x1d, 0xff, 0x6b }, { 0xffff, 0x0000, 0x0000, 0xffff }},
- },
+ { "white", { 0xffff, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
+ { "gray", { 0x8080, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
+ { "black", { 0x0000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
+ { "red", { 0x4c8b, 0x54ce, 0xffff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
+ { "green", { 0x9645, 0x2b33, 0x14d1 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
+ { "blue", { 0x1d2f, 0xffff, 0x6b2f }, { 0xffff, 0x0000, 0x0000, 0xffff }},
+ }
},
/*
* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
@@ -90,7 +90,7 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
* in_bits = 16,
* in_legal = False,
* in_int = True,
- * out_bits = 8,
+ * out_bits = 16,
* out_legal = True,
* out_int = True)
* Tests cases for color conversion generated by converting RGB
@@ -101,13 +101,13 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
.range = DRM_COLOR_YCBCR_LIMITED_RANGE,
.n_colors = 6,
.colors = {
- { "white", { 0xeb, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
- { "gray", { 0x7e, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
- { "black", { 0x10, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
- { "red", { 0x51, 0x5a, 0xf0 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
- { "green", { 0x91, 0x36, 0x22 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
- { "blue", { 0x29, 0xf0, 0x6e }, { 0xffff, 0x0000, 0x0000, 0xffff }},
- },
+ { "white", { 0xeb00, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
+ { "gray", { 0x7dee, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
+ { "black", { 0x1000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
+ { "red", { 0x517b, 0x5a34, 0xf000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
+ { "green", { 0x908e, 0x35cc, 0x2237 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
+ { "blue", { 0x28f7, 0xf000, 0x6dc9 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
+ }
},
/*
* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
@@ -115,7 +115,7 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
* in_bits = 16,
* in_legal = False,
* in_int = True,
- * out_bits = 8,
+ * out_bits = 16,
* out_legal = False,
* out_int = True)
* Tests cases for color conversion generated by converting RGB
@@ -126,21 +126,21 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
.range = DRM_COLOR_YCBCR_FULL_RANGE,
.n_colors = 6,
.colors = {
- { "white", { 0xff, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
- { "gray", { 0x80, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
- { "black", { 0x00, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
- { "red", { 0x36, 0x63, 0xff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
- { "green", { 0xb6, 0x1e, 0x0c }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
- { "blue", { 0x12, 0xff, 0x74 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
- },
+ { "white", { 0xffff, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
+ { "gray", { 0x8080, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
+ { "black", { 0x0000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
+ { "red", { 0x366d, 0x62ac, 0xffff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
+ { "green", { 0xb717, 0x1d55, 0x0bbd }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
+ { "blue", { 0x127c, 0xffff, 0x7443 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
+ }
},
/*
* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
* K=colour.WEIGHTS_YCBCR["ITU-R BT.709"],
* in_bits = 16,
- * int_legal = False,
+ * in_legal = False,
* in_int = True,
- * out_bits = 8,
+ * out_bits = 16,
* out_legal = True,
* out_int = True)
* Tests cases for color conversion generated by converting RGB
@@ -151,13 +151,13 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
.range = DRM_COLOR_YCBCR_LIMITED_RANGE,
.n_colors = 6,
.colors = {
- { "white", { 0xeb, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
- { "gray", { 0x7e, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
- { "black", { 0x10, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
- { "red", { 0x3f, 0x66, 0xf0 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
- { "green", { 0xad, 0x2a, 0x1a }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
- { "blue", { 0x20, 0xf0, 0x76 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
- },
+ { "white", { 0xeb00, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
+ { "gray", { 0x7dee, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
+ { "black", { 0x1000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
+ { "red", { 0x3e8f, 0x6656, 0xf000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
+ { "green", { 0xaca1, 0x29aa, 0x1a45 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
+ { "blue", { 0x1fd0, 0xf000, 0x75bb }, { 0xffff, 0x0000, 0x0000, 0xffff }},
+ }
},
/*
* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
@@ -165,7 +165,7 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
* in_bits = 16,
* in_legal = False,
* in_int = True,
- * out_bits = 8,
+ * out_bits = 16,
* out_legal = False,
* out_int = True)
* Tests cases for color conversion generated by converting RGB
@@ -176,13 +176,13 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
.range = DRM_COLOR_YCBCR_FULL_RANGE,
.n_colors = 6,
.colors = {
- { "white", { 0xff, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
- { "gray", { 0x80, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
- { "black", { 0x00, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
- { "red", { 0x43, 0x5c, 0xff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
- { "green", { 0xad, 0x24, 0x0b }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
- { "blue", { 0x0f, 0xff, 0x76 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
- },
+ { "white", { 0xffff, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
+ { "gray", { 0x8080, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
+ { "black", { 0x0000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
+ { "red", { 0x4340, 0x5c41, 0xffff }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
+ { "green", { 0xad91, 0x23bf, 0x0a4c }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
+ { "blue", { 0x0f2e, 0xffff, 0x75b5 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
+ }
},
/*
* colour.RGB_to_YCbCr(<rgb color in 16 bit form>,
@@ -190,7 +190,7 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
* in_bits = 16,
* in_legal = False,
* in_int = True,
- * out_bits = 8,
+ * out_bits = 16,
* out_legal = True,
* out_int = True)
* Tests cases for color conversion generated by converting RGB
@@ -201,13 +201,13 @@ static struct yuv_u8_to_argb_u16_case yuv_u8_to_argb_u16_cases[] = {
.range = DRM_COLOR_YCBCR_LIMITED_RANGE,
.n_colors = 6,
.colors = {
- { "white", { 0xeb, 0x80, 0x80 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
- { "gray", { 0x7e, 0x80, 0x80 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
- { "black", { 0x10, 0x80, 0x80 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
- { "red", { 0x4a, 0x61, 0xf0 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
- { "green", { 0xa4, 0x2f, 0x19 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
- { "blue", { 0x1d, 0xf0, 0x77 }, { 0xffff, 0x0000, 0x0000, 0xffff }},
- },
+ { "white", { 0xeb00, 0x8000, 0x8000 }, { 0xffff, 0xffff, 0xffff, 0xffff }},
+ { "gray", { 0x7dee, 0x8000, 0x8000 }, { 0xffff, 0x8080, 0x8080, 0x8080 }},
+ { "black", { 0x1000, 0x8000, 0x8000 }, { 0xffff, 0x0000, 0x0000, 0x0000 }},
+ { "red", { 0x4988, 0x60b9, 0xf000 }, { 0xffff, 0xffff, 0x0000, 0x0000 }},
+ { "green", { 0xa47b, 0x2f47, 0x1902 }, { 0xffff, 0x0000, 0xffff, 0x0000 }},
+ { "blue", { 0x1cfd, 0xf000, 0x76fe }, { 0xffff, 0x0000, 0x0000, 0xffff }},
+ }
},
};
@@ -236,7 +236,8 @@ static void vkms_format_test_yuv_u8_to_argb_u16(struct kunit *test)
get_conversion_matrix_to_argb_u16
(DRM_FORMAT_NV12, param->encoding, param->range, &matrix);
- argb = argb_u16_from_yuv888(color->yuv.y, color->yuv.u, color->yuv.v, &matrix);
+ argb = argb_u16_from_yuv161616(&matrix, color->yuv.y, color->yuv.u,
+ color->yuv.v);
KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.a, color->argb.a), 0x1ff,
"On the A channel of the color %s expected 0x%04x, got 0x%04x",
diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
index 5106441f916b..261e822e9618 100644
--- a/drivers/gpu/drm/vkms/vkms_formats.c
+++ b/drivers/gpu/drm/vkms/vkms_formats.c
@@ -279,16 +279,17 @@ static struct pixel_argb_u16 argb_u16_from_BGR565(const __le16 *pixel)
return out_pixel;
}
-VISIBLE_IF_KUNIT struct pixel_argb_u16 argb_u16_from_yuv888(u8 y, u8 channel_1, u8 channel_2,
- const struct conversion_matrix *matrix)
+VISIBLE_IF_KUNIT
+struct pixel_argb_u16 argb_u16_from_yuv161616(const struct conversion_matrix *matrix,
+ u16 y, u16 channel_1, u16 channel_2)
{
u16 r, g, b;
s64 fp_y, fp_channel_1, fp_channel_2;
s64 fp_r, fp_g, fp_b;
- fp_y = drm_int2fixp(((int)y - matrix->y_offset) * 257);
- fp_channel_1 = drm_int2fixp(((int)channel_1 - 128) * 257);
- fp_channel_2 = drm_int2fixp(((int)channel_2 - 128) * 257);
+ fp_y = drm_int2fixp((int)y - matrix->y_offset * 257);
+ fp_channel_1 = drm_int2fixp((int)channel_1 - 128 * 257);
+ fp_channel_2 = drm_int2fixp((int)channel_2 - 128 * 257);
fp_r = drm_fixp_mul(matrix->matrix[0][0], fp_y) +
drm_fixp_mul(matrix->matrix[0][1], fp_channel_1) +
@@ -310,7 +311,7 @@ VISIBLE_IF_KUNIT struct pixel_argb_u16 argb_u16_from_yuv888(u8 y, u8 channel_1,
return argb_u16_from_u16161616(0xffff, r, g, b);
}
-EXPORT_SYMBOL_IF_KUNIT(argb_u16_from_yuv888);
+EXPORT_SYMBOL_IF_KUNIT(argb_u16_from_yuv161616);
/**
* READ_LINE() - Generic generator for a read_line function which can be used for format with one
@@ -504,8 +505,8 @@ static void semi_planar_yuv_read_line(const struct vkms_plane_state *plane, int
const struct conversion_matrix *conversion_matrix = &plane->conversion_matrix;
for (int i = 0; i < count; i++) {
- *out_pixel = argb_u16_from_yuv888(y_plane[0], uv_plane[0], uv_plane[1],
- conversion_matrix);
+ *out_pixel = argb_u16_from_yuv161616(conversion_matrix, y_plane[0] * 257,
+ uv_plane[0] * 257, uv_plane[1] * 257);
out_pixel += 1;
y_plane += step_y;
if ((i + subsampling_offset + 1) % subsampling == 0)
@@ -549,8 +550,9 @@ static void planar_yuv_read_line(const struct vkms_plane_state *plane, int x_sta
const struct conversion_matrix *conversion_matrix = &plane->conversion_matrix;
for (int i = 0; i < count; i++) {
- *out_pixel = argb_u16_from_yuv888(*y_plane, *channel_1_plane, *channel_2_plane,
- conversion_matrix);
+ *out_pixel = argb_u16_from_yuv161616(conversion_matrix,
+ *y_plane * 257, *channel_1_plane * 257,
+ *channel_2_plane * 257);
out_pixel += 1;
y_plane += step_y;
if ((i + subsampling_offset + 1) % subsampling == 0) {
@@ -690,9 +692,9 @@ pixel_read_line_t get_pixel_read_line_function(u32 format)
case DRM_FORMAT_BGRX8888:
return &BGRX8888_read_line;
case DRM_FORMAT_RGB888:
- return RGB888_read_line;
+ return &RGB888_read_line;
case DRM_FORMAT_BGR888:
- return BGR888_read_line;
+ return &BGR888_read_line;
case DRM_FORMAT_ARGB16161616:
return &ARGB16161616_read_line;
case DRM_FORMAT_ABGR16161616:
diff --git a/drivers/gpu/drm/vkms/vkms_formats.h b/drivers/gpu/drm/vkms/vkms_formats.h
index b4fe62ab9c65..eeb208cdd6b1 100644
--- a/drivers/gpu/drm/vkms/vkms_formats.h
+++ b/drivers/gpu/drm/vkms/vkms_formats.h
@@ -14,8 +14,8 @@ void get_conversion_matrix_to_argb_u16(u32 format, enum drm_color_encoding encod
struct conversion_matrix *matrix);
#if IS_ENABLED(CONFIG_KUNIT)
-struct pixel_argb_u16 argb_u16_from_yuv888(u8 y, u8 channel_1, u8 channel_2,
- const struct conversion_matrix *matrix);
+struct pixel_argb_u16 argb_u16_from_yuv161616(const struct conversion_matrix *matrix,
+ u16 y, u16 channel_1, u16 channel_2);
#endif
#endif /* _VKMS_FORMATS_H_ */
--
2.49.0
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