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dvdemux: Remember if upstream had a time segment and if not properly create time segments

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Previously the segment.time was wrong, and the position was not updated
correctly, resulting in seeks in PUSH mode with upstream providing a BYTES
segment to not work at all.

https://bugzilla.gnome.org/show_bug.cgi?id=767157
This commit is contained in:
Sebastian Dröge 2016-06-03 10:36:32 +03:00
parent 479a3bab18
commit 26b37c7acb
2 changed files with 21 additions and 2 deletions
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22
ext/dv/gstdvdemux.c
View file

@ -268,6 +268,7 @@ gst_dvdemux_reset (GstDVDemux * dvdemux)
dvdemux->wide = FALSE;
gst_segment_init (&dvdemux->byte_segment, GST_FORMAT_BYTES);
gst_segment_init (&dvdemux->time_segment, GST_FORMAT_TIME);
dvdemux->upstream_time_segment = FALSE;
dvdemux->have_group_id = FALSE;
dvdemux->group_id = G_MAXUINT;
}
@ -797,6 +798,8 @@ gst_dvdemux_handle_sink_event (GstPad * pad, GstObject * parent,
case GST_FORMAT_TIME:
gst_segment_copy_into (segment, &dvdemux->time_segment);
dvdemux->upstream_time_segment = TRUE;
/* and we can just forward this time event */
res = gst_dvdemux_push_event (dvdemux, event);
break;
@ -1484,9 +1487,11 @@ gst_dvdemux_demux_frame (GstDVDemux * dvdemux, GstBuffer * buffer)
GstSMPTETimeCode timecode;
int frame_number;
if (G_UNLIKELY (dvdemux->need_segment)) {
if (dvdemux->need_segment) {
GstFormat format;
g_assert (!dvdemux->upstream_time_segment);
/* convert to time and store as start/end_timestamp */
format = GST_FORMAT_TIME;
if (!(gst_dvdemux_convert_sink_pair (dvdemux,
@ -1496,8 +1501,12 @@ gst_dvdemux_demux_frame (GstDVDemux * dvdemux, GstBuffer * buffer)
(gint64 *) & dvdemux->time_segment.stop)))
goto segment_error;
dvdemux->time_segment.time = dvdemux->time_segment.start;
dvdemux->time_segment.rate = dvdemux->byte_segment.rate;
dvdemux->time_segment.position = dvdemux->time_segment.start;
gst_dvdemux_sink_convert (dvdemux,
GST_FORMAT_BYTES, dvdemux->byte_segment.position,
GST_FORMAT_TIME, (gint64 *) & dvdemux->time_segment.position);
gst_dvdemux_update_frame_offsets (dvdemux, dvdemux->time_segment.position);
@ -1652,6 +1661,10 @@ gst_dvdemux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
if (G_UNLIKELY (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))) {
gst_adapter_clear (dvdemux->adapter);
dvdemux->discont = TRUE;
/* Should recheck where we are */
if (!dvdemux->upstream_time_segment)
dvdemux->need_segment = TRUE;
}
/* a timestamp always should be respected */
@ -1662,6 +1675,11 @@ gst_dvdemux_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
if (dvdemux->discont)
gst_dvdemux_update_frame_offsets (dvdemux,
dvdemux->time_segment.position);
} else if (dvdemux->upstream_time_segment && dvdemux->discont) {
/* This will probably fail later to provide correct
* timestamps and/or durations but also should not happen */
GST_ERROR_OBJECT (dvdemux,
"Upstream provides TIME segment but no PTS after discont");
}
gst_adapter_push (dvdemux->adapter, buffer);

1
ext/dv/gstdvdemux.h
View file

@ -76,6 +76,7 @@ struct _GstDVDemux {
GstDVDemuxSeekHandler seek_handler;
GstSegment byte_segment;
gboolean upstream_time_segment;
GstSegment time_segment;
gboolean need_segment;
gboolean new_media;