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videodecoder: use DTS if PTS unknown

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The buffer should be set according to DTS if exists
when we are guessin the PTS instead of segment start.
The decoder can receive buffers which are before the segment
in case of seek for example.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/1111>
This commit is contained in:
Stéphane Cerveau 2021-04-19 13:28:39 +02:00
parent 33167573e1
commit ada8b07be2
1 changed files with 10 additions and 4 deletions
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14
gst-libs/gst/video/gstvideodecoder.c
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@ -2950,11 +2950,17 @@ gst_video_decoder_prepare_finish_frame (GstVideoDecoder *
if (frame->duration != GST_CLOCK_TIME_NONE) {
if (GST_CLOCK_TIME_IS_VALID (priv->last_timestamp_out))
frame->pts = priv->last_timestamp_out + frame->duration;
else if (decoder->output_segment.rate > 0.0)
else if (frame->dts != GST_CLOCK_TIME_NONE) {
frame->pts = frame->dts;
GST_LOG_OBJECT (decoder,
"Setting DTS as PTS %" GST_TIME_FORMAT " for frame...",
GST_TIME_ARGS (frame->pts));
} else if (decoder->output_segment.rate > 0.0)
frame->pts = decoder->output_segment.start;
GST_LOG_OBJECT (decoder,
"Guessing timestamp %" GST_TIME_FORMAT " for frame...",
GST_TIME_ARGS (frame->pts));
GST_INFO_OBJECT (decoder,
"Guessing PTS=%" GST_TIME_FORMAT " for frame... DTS=%"
GST_TIME_FORMAT, GST_TIME_ARGS (frame->pts),
GST_TIME_ARGS (frame->dts));
} else if (sync && frame->dts != GST_CLOCK_TIME_NONE) {
frame->pts = frame->dts;
GST_LOG_OBJECT (decoder,