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surface: Add ExportSurfaceHandle support for dma-buf export

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This is the latest version of dma-buf export, that does support
specifying DRM modifiers.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
This commit is contained in:
Paul Kocialkowski
2018-07-18 15:02:37 +02:00
parent 48a6e0a7ef
commit 7587ef6901
3 changed files with 100 additions and 0 deletions
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src/surface.c
+96
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@@ -31,10 +31,13 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <va/va_drmcommon.h>
#include <linux/videodev2.h>
#include "media.h"
@@ -335,3 +338,96 @@ VAStatus RequestUnlockSurface(VADriverContextP context, VASurfaceID surface_id)
{
return VA_STATUS_ERROR_UNIMPLEMENTED;
}
VAStatus RequestExportSurfaceHandle(VADriverContextP context,
VASurfaceID surface_id, uint32_t mem_type,
uint32_t flags, void *descriptor)
{
struct request_data *driver_data = context->pDriverData;
VADRMPRIMESurfaceDescriptor *surface_descriptor = descriptor;
struct object_surface *surface_object;
struct video_format *video_format;
int *export_fds = NULL;
unsigned int export_fds_count;
unsigned int planes_count;
unsigned int size;
unsigned int i;
VAStatus status;
int rc;
if (mem_type != VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2)
return VA_STATUS_ERROR_UNSUPPORTED_MEMORY_TYPE;
surface_object = SURFACE(driver_data, surface_id);
if (surface_object == NULL)
return VA_STATUS_ERROR_INVALID_SURFACE;
export_fds_count = surface_object->destination_buffers_count;
export_fds = malloc(export_fds_count * sizeof(*export_fds));
rc = v4l2_export_buffer(driver_data->video_fd,
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
surface_object->destination_index, O_RDONLY,
export_fds, export_fds_count);
if (rc < 0) {
status = VA_STATUS_ERROR_OPERATION_FAILED;
goto error;
}
planes_count = surface_object->destination_planes_count;
video_format = video_format_find(driver_data->tiled_format);
if (video_format == NULL) {
status = VA_STATUS_ERROR_OPERATION_FAILED;
goto error;
}
surface_descriptor->fourcc = VA_FOURCC_NV12;
surface_descriptor->width = surface_object->width;
surface_descriptor->height = surface_object->height;
surface_descriptor->num_objects = export_fds_count;
if (export_fds_count == 1) {
size = 0;
for (i = 0; i < planes_count; i++)
size += surface_object->destination_sizes[i];
}
for (i = 0; i < export_fds_count; i++) {
surface_descriptor->objects[i].drm_format_modifier =
video_format->drm_modifier;
surface_descriptor->objects[i].fd = export_fds[i];
surface_descriptor->objects[i].size = export_fds_count == 1 ?
size :
surface_object->destination_sizes[i];
}
surface_descriptor->num_layers = 1;
surface_descriptor->layers[0].drm_format = video_format->drm_format;
surface_descriptor->layers[0].num_planes = planes_count;
for (i = 0; i < planes_count; i++) {
surface_descriptor->layers[0].object_index[i] =
export_fds_count == 1 ? 0 : i;
surface_descriptor->layers[0].offset[i] =
surface_object->destination_offsets[i];
surface_descriptor->layers[0].pitch[i] =
surface_object->destination_bytesperlines[i];
}
status = VA_STATUS_SUCCESS;
goto complete;
error:
for (i = 0; i < export_fds_count; i++)
if (export_fds[i] >= 0)
close(export_fds[i]);
complete:
if (export_fds != NULL)
free(export_fds);
return status;
}