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android/gralloc0: add CROS_GRALLOC_DRM_GET_BUFFER_COLOR_INFO
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Implement retrieving color buffer info via gralloc0. This is a simpler
alternative to imapper4/5 which requires a dependency on libui that
would require a heavy effort to import headers and stub to be able to
build out of tree.

Since VNDK no longer releases headers since API Level 35 and they are
now only auto-generated, copy over the neccessary defines.

Signed-off-by: Juston Li <justonli@google.com>
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37185>
This commit is contained in:
Juston Li 2025-08-26 13:35:02 -07:00 • committed by Marge Bot
parent 360593c2a0
commit 867846d2bc
1 changed files with 114 additions and 0 deletions
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114
src/util/u_gralloc/u_gralloc_cros_api.c
View file

@ -16,6 +16,35 @@
#include "u_gralloc_internal.h"
/* The following defines are selectively copied over from auto-generated
* AIDL sources which are no longer released as headers in VNDK from api
* level 35 on.
* These need to be kept in sync with AIDL sources and additional
* defines to be added as needed.
*/
enum cros_gralloc0_dataspace {
DATASPACE_STANDARD_MASK = 63 << 16,
DATASPACE_STANDARD_BT709 = 1 << 16,
DATASPACE_STANDARD_BT601_625 = 2 << 16,
DATASPACE_STANDARD_BT601_625_UNADJUSTED = 3 << 16,
DATASPACE_STANDARD_BT601_525 = 4 << 16,
DATASPACE_STANDARD_BT601_525_UNADJUSTED = 5 << 16,
DATASPACE_STANDARD_BT2020 = 6 << 16,
DATASPACE_STANDARD_BT2020_CONSTANT_LUMINANCE = 7 << 16,
DATASPACE_RANGE_MASK= 7 << 27,
DATASPACE_RANGE_FULL = 1 << 27,
DATASPACE_RANGE_LIMITED = 2 << 27,
};
enum cros_gralloc0_chroma_siting {
CHROMA_SITING_SITED_NONE = 0,
CHROMA_SITING_SITED_UNKNOWN = 1,
CHROMA_SITING_SITED_INTERSTITIAL = 2,
CHROMA_SITING_COSITED_HORIZONTAL = 3,
CHROMA_SITING_COSITED_VERTICAL = 4,
CHROMA_SITING_COSITED_BOTH = 5,
};
/* More recent CrOS gralloc has a perform op that fills out the struct below
* with canonical information about the buffer and its modifier, planes,
* offsets and strides. If we have this, we can skip straight to
@ -34,6 +63,7 @@ static const char cros_gralloc_module_name[] = "CrOS Gralloc";
#define CROS_GRALLOC_DRM_GET_BUFFER_INFO 4
#define CROS_GRALLOC_DRM_GET_USAGE 5
#define CROS_GRALLOC_DRM_GET_BUFFER_COLOR_INFO 6
#define CROS_GRALLOC_DRM_GET_USAGE_FRONT_RENDERING_BIT 0x1
struct cros_gralloc0_buffer_info {
@ -45,6 +75,11 @@ struct cros_gralloc0_buffer_info {
int stride[4];
};
struct cros_gralloc0_buffer_color_info {
int32_t dataspace;
int32_t chroma_siting;
};
static int
cros_get_buffer_info(struct u_gralloc *gralloc,
struct u_gralloc_buffer_handle *hnd,
@ -88,6 +123,84 @@ cros_get_front_rendering_usage(struct u_gralloc *gralloc, uint64_t *out_usage)
return -ENOTSUP;
}
static int
cros_get_buffer_color_info(struct u_gralloc * gralloc,
struct u_gralloc_buffer_handle *hnd,
struct u_gralloc_buffer_color_info *out)
{
struct cros_gralloc0_buffer_color_info color_info;
struct cros_gralloc *gr = (struct cros_gralloc *)gralloc;
gralloc_module_t *gr_mod = gr->gralloc_module;
if (gr_mod->perform(gr_mod, CROS_GRALLOC_DRM_GET_BUFFER_COLOR_INFO, hnd->handle,
&color_info)) {
/* Return default values if CROS_GRALLOC_DRM_GET_BUFFER_COLOR_INFO
* fails or is not implemented for backwards compat.
*/
*out = (struct u_gralloc_buffer_color_info){
.yuv_color_space = __DRI_YUV_COLOR_SPACE_ITU_REC601,
.sample_range = __DRI_YUV_NARROW_RANGE,
.horizontal_siting = __DRI_YUV_CHROMA_SITING_0_5,
.vertical_siting = __DRI_YUV_CHROMA_SITING_0_5,
};
return 0;
}
/* default to __DRI_YUV_COLOR_SPACE_ITU_REC601 */
int32_t standard = color_info.dataspace & DATASPACE_STANDARD_MASK;
switch (standard) {
case DATASPACE_STANDARD_BT709:
out->yuv_color_space = __DRI_YUV_COLOR_SPACE_ITU_REC709;
break;
case DATASPACE_STANDARD_BT2020:
case DATASPACE_STANDARD_BT2020_CONSTANT_LUMINANCE:
out->yuv_color_space = __DRI_YUV_COLOR_SPACE_ITU_REC2020;
break;
case DATASPACE_STANDARD_BT601_625:
case DATASPACE_STANDARD_BT601_625_UNADJUSTED:
case DATASPACE_STANDARD_BT601_525:
case DATASPACE_STANDARD_BT601_525_UNADJUSTED:
default:
out->yuv_color_space = __DRI_YUV_COLOR_SPACE_ITU_REC601;
break;
}
/* default to __DRI_YUV_NARROW_RANGE */
int32_t range = color_info.dataspace & DATASPACE_RANGE_MASK;
switch (range) {
case DATASPACE_RANGE_FULL:
out->sample_range = __DRI_YUV_FULL_RANGE;
break;
case DATASPACE_RANGE_LIMITED:
default:
out->sample_range = __DRI_YUV_NARROW_RANGE;
break;
}
/* default to __DRI_YUV_CHROMA_SITING_0_5 */
switch (color_info.chroma_siting) {
case CHROMA_SITING_COSITED_HORIZONTAL:
out->horizontal_siting = __DRI_YUV_CHROMA_SITING_0;
out->vertical_siting = __DRI_YUV_CHROMA_SITING_0_5;
break;
case CHROMA_SITING_COSITED_VERTICAL:
out->horizontal_siting = __DRI_YUV_CHROMA_SITING_0_5;
out->vertical_siting = __DRI_YUV_CHROMA_SITING_0;
break;
case CHROMA_SITING_COSITED_BOTH:
out->horizontal_siting = __DRI_YUV_CHROMA_SITING_0;
out->vertical_siting = __DRI_YUV_CHROMA_SITING_0;
break;
case CHROMA_SITING_SITED_INTERSTITIAL:
default:
out->horizontal_siting = __DRI_YUV_CHROMA_SITING_0_5;
out->vertical_siting = __DRI_YUV_CHROMA_SITING_0_5;
break;
}
return 0;
}
static int
destroy(struct u_gralloc *gralloc)
{
@ -121,6 +234,7 @@ u_gralloc_cros_api_create()
}
gr->base.ops.get_buffer_basic_info = cros_get_buffer_info;
gr->base.ops.get_buffer_color_info = cros_get_buffer_color_info;
gr->base.ops.get_front_rendering_usage = cros_get_front_rendering_usage;
gr->base.ops.destroy = destroy;