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context: Liberate output and capture buffers at ContextDestroy

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The V4L2 API does not currently provide a way to liberate allocated
buffers one by one (which would fit well with DestroySurfaces in
VAAPI). Moreover, streaming needs to be off before liberating
buffers is allowed.

As a result, output an capture buffers can only be liberated when
destroying the decoding context, all at once, such as implemented
in this patch.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
This commit is contained in:
Paul Kocialkowski
2018-07-19 15:07:43 +02:00
parent 72c22a3bce
commit fa7ab6a251
1 changed files with 23 additions and 3 deletions
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src/context.c
+23 -3
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@@ -196,15 +196,13 @@ VAStatus RequestDestroyContext(VADriverContextP context, VAContextID context_id)
{
struct request_data *driver_data = context->pDriverData;
struct object_context *context_object;
VAStatus status;
int rc;
context_object = CONTEXT(driver_data, context_id);
if (context_object == NULL)
return VA_STATUS_ERROR_INVALID_CONTEXT;
object_heap_free(&driver_data->context_heap,
(struct object_base *)context_object);
rc = v4l2_set_stream(driver_data->video_fd,
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, false);
if (rc < 0)
@@ -215,5 +213,27 @@ VAStatus RequestDestroyContext(VADriverContextP context, VAContextID context_id)
if (rc < 0)
return VA_STATUS_ERROR_OPERATION_FAILED;
/* Buffers liberation */
status = RequestDestroySurfaces(context, context_object->surfaces_ids,
context_object->surfaces_count);
if (status != VA_STATUS_SUCCESS)
return VA_STATUS_ERROR_OPERATION_FAILED;
free(context_object->surfaces_ids);
object_heap_free(&driver_data->context_heap,
(struct object_base *)context_object);
rc = v4l2_request_buffers(driver_data->video_fd,
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE, 0);
if (rc < 0)
return VA_STATUS_ERROR_OPERATION_FAILED;
rc = v4l2_request_buffers(driver_data->video_fd,
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, 0);
if (rc < 0)
return VA_STATUS_ERROR_OPERATION_FAILED;
return VA_STATUS_SUCCESS;
}