Use the gst_video_aggregator_pad_has_current_buffer API
to check if the current sinkpad has a queued buffer before
attempting to obtain a input buffer from the base plugin.
If the sinkpad does not have a current buffer, then it is
either not producing them yet (e.g. current time < sinkpad
start time) or it has reached EOS.
Previously, we only handled EOS case.
Example:
gst-launch-1.0 videotestsrc num-buffers=100 \
! vaapipostproc ! vaapioverlay name=overlay \
! vaapisink videotestsrc timestamp-offset=
1000000000 \
num-buffers=100 ! video/x-raw,width=160,height=120 \
! overlay.
blend_surface = &generator->blend_surface;
blend_surface->surface = NULL;
+ /* Current sinkpad may not be queueing buffers yet (e.g. timestamp-offset)
+ * or it may have reached EOS */
+ if (!gst_video_aggregator_pad_has_current_buffer (vagg_pad))
+ continue;
+
inframe = gst_video_aggregator_pad_get_prepared_frame (vagg_pad);
buf = gst_video_aggregator_pad_get_current_buffer (vagg_pad);
pad = GST_VAAPI_OVERLAY_SINK_PAD (vagg_pad);
(generator->overlay), GST_PAD (pad), buf, &inbuf) != GST_FLOW_OK)
return blend_surface;
- /* Current sinkpad may have reached EOS */
- if (!inframe || !inbuf)
- continue;
-
inbuf_meta = gst_buffer_get_vaapi_video_meta (inbuf);
if (inbuf_meta) {
blend_surface->surface = gst_vaapi_video_meta_get_surface (inbuf_meta);