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Message-Id: <20241007-b4-new-color-formats-v2-6-d47da50d4674@bootlin.com>
Date: Mon, 07 Oct 2024 18:46:11 +0200
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>,
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>,
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, marcheu@...gle.com, nicolejadeyee@...gle.com,
Louis Chauvet <louis.chauvet@...tlin.com>,
20241007-yuv-v12-0-01c1ada6fec8@...tlin.com
Subject: [PATCH RESEND v2 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 | 3 ++-
drivers/gpu/drm/vkms/vkms_formats.c | 22 ++++++++++++----------
drivers/gpu/drm/vkms/vkms_formats.h | 4 ++--
3 files changed, 16 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/vkms/tests/vkms_format_test.c b/drivers/gpu/drm/vkms/tests/vkms_format_test.c
index 351409897ca3..e3a77954e6dc 100644
--- a/drivers/gpu/drm/vkms/tests/vkms_format_test.c
+++ b/drivers/gpu/drm/vkms/tests/vkms_format_test.c
@@ -188,7 +188,8 @@ 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 * 257, color->yuv.u * 257,
+ color->yuv.v * 257);
KUNIT_EXPECT_LE_MSG(test, abs_diff(argb.a, color->argb.a), 257,
"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 2376ea8661ac..95ff15051fb7 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
@@ -505,8 +506,8 @@ 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)
@@ -550,8 +551,9 @@ 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) {
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_ */
--
2.46.2
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