GstBuffer *
gst_vaapi_video_buffer_new_from_buffer (GstBuffer * buffer)
{
GstVaapiVideoMeta *const meta = gst_buffer_get_vaapi_video_meta (buffer);
return meta ? new_vbuffer (gst_vaapi_video_meta_ref (meta)) : NULL;
}
GstBuffer *
gst_vaapi_video_buffer_new (GstVaapiVideoMeta * meta)
{
g_return_val_if_fail (meta != NULL, NULL);
return new_vbuffer (gst_vaapi_video_meta_ref (meta));
}
GstMemory *
gst_vaapi_video_memory_new (GstAllocator * base_allocator,
GstVaapiVideoMeta * meta)
{
GstVaapiVideoAllocator *const allocator =
GST_VAAPI_VIDEO_ALLOCATOR_CAST (base_allocator);
const GstVideoInfo *vip;
GstVaapiVideoMemory *mem;
g_return_val_if_fail (GST_VAAPI_IS_VIDEO_ALLOCATOR (allocator), NULL);
mem = g_slice_new (GstVaapiVideoMemory);
if (!mem)
return NULL;
vip = &allocator->image_info;
gst_memory_init (&mem->parent_instance, GST_MEMORY_FLAG_NO_SHARE,
gst_object_ref (allocator), NULL, GST_VIDEO_INFO_SIZE (vip), 0,
0, GST_VIDEO_INFO_SIZE (vip));
mem->proxy = NULL;
mem->surface_info = &allocator->surface_info;
mem->surface = NULL;
mem->image_info = &allocator->image_info;
mem->image = NULL;
mem->meta = meta ? gst_vaapi_video_meta_ref (meta) : NULL;
mem->map_type = 0;
mem->map_count = 0;
mem->use_direct_rendering = allocator->has_direct_rendering;
GST_VAAPI_VIDEO_MEMORY_FLAG_SET (mem,
GST_VAAPI_VIDEO_MEMORY_FLAG_SURFACE_IS_CURRENT);
return GST_MEMORY_CAST (mem);
}
void
gst_buffer_set_vaapi_video_meta (GstBuffer * buffer, GstVaapiVideoMeta * meta)
{
GstMeta *m;
g_return_if_fail (GST_IS_BUFFER (buffer));
g_return_if_fail (GST_VAAPI_IS_VIDEO_META (meta));
m = gst_buffer_add_meta (buffer, GST_VAAPI_VIDEO_META_INFO, NULL);
if (m)
GST_VAAPI_VIDEO_META_HOLDER (m)->meta = gst_vaapi_video_meta_ref (meta);
}
/**
* gst_vaapi_video_meta_replace:
* @old_meta_ptr: a pointer to a #GstVaapiVideoMeta
* @new_meta: a #GstVaapiVideoMeta
*
* @new_meta. This means that @old_meta_ptr shall reference a valid
* Atomically replaces the meta object held in @old_meta_ptr with
* object. However, @new_meta can be NULL.
*/
void
gst_vaapi_video_meta_replace (GstVaapiVideoMeta ** old_meta_ptr,
GstVaapiVideoMeta * new_meta)
{
GstVaapiVideoMeta *old_meta;
g_return_if_fail (old_meta_ptr != NULL);
old_meta = g_atomic_pointer_get ((gpointer *) old_meta_ptr);
if (old_meta == new_meta)
return;
if (new_meta)
gst_vaapi_video_meta_ref (new_meta);
while (!g_atomic_pointer_compare_and_exchange ((gpointer *) old_meta_ptr,
old_meta, new_meta))
old_meta = g_atomic_pointer_get ((gpointer *) old_meta_ptr);
if (old_meta)
gst_vaapi_video_meta_unref (old_meta);
}
