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timecodestamper: Improve error handling and don't crash

Browse source 
Post a bus message explaining that input buffers must
have timestamps and return GST_FLOW_ERROR, instead of
a confusing NOT-NEGOTIATED

Also remove an errant buffer unref in the error handling
that would lead to crashes after.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5935>
This commit is contained in:
Jan Schmidt 2024-01-18 21:56:35 +11:00 committed by GStreamer Marge Bot
parent e3fe89aba8
commit 5e4e57ddb3
1 changed files with 13 additions and 4 deletions
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17
subprojects/gst-plugins-bad/gst/timecode/gsttimecodestamper.c
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@ -1119,10 +1119,19 @@ gst_timecodestamper_transform_ip (GstBaseTransform * vfilter,
GstFlowReturn flow_ret = GST_FLOW_OK;
GstVideoTimeCodeFlags tc_flags = 0;
if (timecodestamper->fps_n == 0 || timecodestamper->fps_d == 0
|| !GST_BUFFER_PTS_IS_VALID (buffer)) {
gst_buffer_unref (buffer);
return GST_FLOW_NOT_NEGOTIATED;
if (timecodestamper->fps_n == 0 || timecodestamper->fps_d == 0) {
/* This can't actually happen I think - the caps template requires a framerate,
* so we'd have to receive a buffer without prior caps */
GST_ELEMENT_ERROR (timecodestamper, STREAM, FAILED,
("Can't process without a framerate"),
("Received a video buffer without framerate"));
return GST_FLOW_ERROR;
}
if (!GST_BUFFER_PTS_IS_VALID (buffer)) {
GST_ELEMENT_ERROR (timecodestamper, STREAM, FAILED,
("Input video buffer has no timestamp"),
("Video buffers must have timestamps"));
return GST_FLOW_ERROR;
}
#if HAVE_LTC
if (timecodestamper->video_latency == -1