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v4l2videodec: replace multiple decoder bug warnings with single one

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Achieve this by dropping frames after a drain if the driver failed to so.
This works around RaspberryPi driver issue [1].

[1] https://github.com/raspberrypi/linux/issues/5059#issuecomment-

Fixes #1103

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2710>
This commit is contained in:
fduncanh 2022-05-28 15:04:10 -04:00 committed by Tim-Philipp Müller
parent 1eef7bbc22
commit acde6ff8be
1 changed files with 25 additions and 1 deletions
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26
subprojects/gst-plugins-good/sys/v4l2/gstv4l2videodec.c
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@ -412,6 +412,7 @@ gst_v4l2_video_dec_finish (GstVideoDecoder * decoder)
GstV4l2VideoDec *self = GST_V4L2_VIDEO_DEC (decoder);
GstFlowReturn ret = GST_FLOW_OK;
GstBuffer *buffer;
GList *pending_frames = NULL;
if (gst_pad_get_task_state (decoder->srcpad) != GST_TASK_STARTED)
goto done;
@ -464,7 +465,30 @@ gst_v4l2_video_dec_finish (GstVideoDecoder * decoder)
GST_DEBUG_OBJECT (decoder, "Done draining buffers");
/* TODO Shall we cleanup any reffed frame to workaround broken decoders ? */
/* Draining of the capture buffer has completed.
* If any pending frames remain at this point there is a decoder error.
* This has been observed as a driver bug, where eos is sent too early.
* These frames will never be rendered, so drop them now with a warning */
pending_frames = gst_video_decoder_get_frames (decoder);
if (pending_frames) {
int counter = 0;
guint32 first, last;
for (GList * g = pending_frames; g; g = g->next) {
GstVideoCodecFrame *frame = g->data;
g->data = NULL;
last = frame->system_frame_number;
if (!counter)
first = last;
counter++;
gst_video_decoder_drop_frame (decoder, frame);
}
g_warning
("%s: %i frames %u-%u left undrained after CMD_STOP, eos sent too early: bug in decoder -- please file a bug",
GST_ELEMENT_NAME (decoder), counter, first, last);
if (pending_frames)
g_list_free (pending_frames);
}
done:
return ret;