Commit 89a9a69386f849ec79081564a734ce3159e247c3 - kmscube

gst-decoder.c: advertise support for GstVideoMeta This way, upstream decoder the produce frame with special strides and offsets won't have to copy the frames. This also ensure DMABuf can be delivered to kmscube. Signed-off-by: Nicolas Dufresne <nicolas@ndufresne.ca> Nicolas Dufresne authored 7 years ago Rob Clark committed 7 years ago

1 changed file(s) with 25 addition(s) and 0 deletion(s). Raw diff Collapse all Expand all

+25

-0

gst-decoder.c less more

233	233	return TRUE;
234	234	}
235	235
	236	static GstPadProbeReturn
	237	appsink_query_cb(GstPad pad G_GNUC_UNUSED, GstPadProbeInfo info,
	238	gpointer user_data G_GNUC_UNUSED)
	239	{
	240	GstQuery *query = info->data;
	241
	242	if (GST_QUERY_TYPE (query) != GST_QUERY_ALLOCATION)
	243	return GST_PAD_PROBE_OK;
	244
	245	gst_query_add_allocation_meta(query, GST_VIDEO_META_API_TYPE, NULL);
	246
	247	return GST_PAD_PROBE_HANDLED;
	248	}
	249
236	250	struct decoder *
237	251	video_init(const struct egl egl, const struct gbm gbm, const char *filename)
238	252	{
239	253	struct decoder *dec;
240	254	GstElement src, decodebin;
	255	GstPad *pad;
241	256	GstBus *bus;
242	257
243	258	dec = calloc(1, sizeof(*dec));

251	266	dec->pipeline = gst_parse_launch(pipeline, NULL);
252	267
253	268	dec->sink = gst_bin_get_by_name(GST_BIN(dec->pipeline), "sink");
	269
	270	/* Implement the allocation query using a pad probe. This probe will
	271	* adverstize support for GstVideoMeta, which avoid hardware accelerated
	272	* decoder that produce special strides and offsets from having to
	273	* copy the buffers.
	274	*/
	275	pad = gst_element_get_static_pad(dec->sink, "sink");
	276	gst_pad_add_probe(pad, GST_PAD_PROBE_TYPE_QUERY_DOWNSTREAM,
	277	appsink_query_cb, NULL, NULL);
	278	gst_object_unref(pad);
254	279
255	280	src = gst_bin_get_by_name(GST_BIN(dec->pipeline), "src");
256	281	g_object_set(G_OBJECT(src), "location", filename, NULL);