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dashdemux: Mark every first buffer of moov, sidx, moof and mdat as DISCONT in keyframe-only mode

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We need to mark every first buffer of a key unit as discont, and also every
first buffer of a moov and moof. This ensures that qtdemux takes note of our
buffer offsets for each of those buffers instead of keeping track of them
itself from the first buffer. We need offsets to be consistent between moof
and mdat

https://bugzilla.gnome.org/show_bug.cgi?id=741104
This commit is contained in:
Sebastian Dröge 2016-06-01 14:02:11 +03:00
parent 12c2415251
commit 7b4fe1e02f
1 changed files with 19 additions and 4 deletions
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23
ext/dash/gstdashdemux.c
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@ -1796,6 +1796,7 @@ static gboolean
gst_dash_demux_stream_fragment_start (GstAdaptiveDemux * demux,
GstAdaptiveDemuxStream * stream)
{
GstDashDemux *dashdemux = GST_DASH_DEMUX_CAST (demux);
GstDashDemuxStream *dashstream = (GstDashDemuxStream *) stream;
dashstream->sidx_index_header_or_data = 0;
@ -1804,8 +1805,15 @@ gst_dash_demux_stream_fragment_start (GstAdaptiveDemux * demux,
dashstream->isobmff_parser.index_header_or_data = 0;
dashstream->isobmff_parser.current_offset = -1;
if (dashstream->moof && dashstream->moof_sync_samples
&& demux->segment.flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS)
/* We need to mark every first buffer of a key unit as discont,
* and also every first buffer of a moov and moof. This ensures
* that qtdemux takes note of our buffer offsets for each of those
* buffers instead of keeping track of them itself from the first
* buffer. We need offsets to be consistent between moof and mdat
*/
if (dashstream->is_isobmff && dashdemux->allow_trickmode_key_units
&& (demux->segment.flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS)
&& dashstream->active_stream->mimeType == GST_STREAM_VIDEO)
stream->discont = TRUE;
return TRUE;
@ -1818,8 +1826,15 @@ gst_dash_demux_stream_fragment_finished (GstAdaptiveDemux * demux,
GstDashDemux *dashdemux = GST_DASH_DEMUX_CAST (demux);
GstDashDemuxStream *dashstream = (GstDashDemuxStream *) stream;
if (dashstream->moof && dashstream->moof_sync_samples
&& demux->segment.flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS)
/* We need to mark every first buffer of a key unit as discont,
* and also every first buffer of a moov and moof. This ensures
* that qtdemux takes note of our buffer offsets for each of those
* buffers instead of keeping track of them itself from the first
* buffer. We need offsets to be consistent between moof and mdat
*/
if (dashstream->is_isobmff && dashdemux->allow_trickmode_key_units
&& (demux->segment.flags & GST_SEGMENT_FLAG_TRICKMODE_KEY_UNITS)
&& dashstream->active_stream->mimeType == GST_STREAM_VIDEO)
stream->discont = TRUE;
if (gst_mpd_client_has_isoff_ondemand_profile (dashdemux->client)