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qtdemux: expose streams with first moof for fragmented format

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In case of push mode, qtdemux expose streams after got moov box.
We can not guarantee that a moov box has sample data such as sample duration
and the number of sample in stbl box for fragmented format case.
So, if a moov has no sample data, streams will not be exposed until get the first moof.

https://bugzilla.gnome.org/show_bug.cgi?id=760779
This commit is contained in:
Seungha Yang 2016-01-28 21:36:54 +09:00 committed by Sebastian Dröge
parent 3edf0737d6
commit d8bb6687ea
2 changed files with 39 additions and 16 deletions
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54
gst/isomp4/qtdemux.c
View file

@ -583,6 +583,7 @@ gst_qtdemux_init (GstQTDemux * qtdemux)
qtdemux->state = QTDEMUX_STATE_INITIAL;
qtdemux->pullbased = FALSE;
qtdemux->posted_redirect = FALSE;
qtdemux->pending_configure = FALSE;
qtdemux->neededbytes = 16;
qtdemux->todrop = 0;
qtdemux->adapter = gst_adapter_new ();
@ -1983,6 +1984,7 @@ gst_qtdemux_reset (GstQTDemux * qtdemux, gboolean hard)
gst_caps_replace (&qtdemux->media_caps, NULL);
qtdemux->timescale = 0;
qtdemux->got_moov = FALSE;
qtdemux->pending_configure = FALSE;
} else if (qtdemux->mss_mode) {
gst_flow_combiner_reset (qtdemux->flowcombiner);
for (n = 0; n < qtdemux->n_streams; n++)
@ -5778,6 +5780,7 @@ gst_qtdemux_process_adapter (GstQTDemux * demux, gboolean force)
&fourcc);
if (fourcc == FOURCC_moov) {
gint n;
gboolean got_samples = FALSE;
/* in usual fragmented setup we could try to scan for more
* and end up at the the moov (after mdat) again */
@ -5809,19 +5812,27 @@ gst_qtdemux_process_adapter (GstQTDemux * demux, gboolean force)
qtdemux_node_dump (demux, demux->moov_node);
qtdemux_parse_tree (demux);
qtdemux_prepare_streams (demux);
if (!demux->got_moov)
qtdemux_expose_streams (demux);
else {
for (n = 0; n < demux->n_streams; n++) {
QtDemuxStream *stream = demux->streams[n];
gst_qtdemux_configure_stream (demux, stream);
for (n = 0; n < demux->n_streams; n++) {
QtDemuxStream *stream = demux->streams[n];
got_samples |= stream->stbl_index >= 0;
}
if (!demux->fragmented || got_samples) {
if (!demux->got_moov) {
qtdemux_expose_streams (demux);
} else {
for (n = 0; n < demux->n_streams; n++) {
QtDemuxStream *stream = demux->streams[n];
gst_qtdemux_configure_stream (demux, stream);
}
}
gst_qtdemux_check_send_pending_segment (demux);
demux->pending_configure = FALSE;
} else {
demux->pending_configure = TRUE;
}
demux->got_moov = TRUE;
gst_qtdemux_check_send_pending_segment (demux);
/* fragmented streams headers shouldn't contain edts atoms */
if (!demux->fragmented) {
@ -5840,6 +5851,7 @@ gst_qtdemux_process_adapter (GstQTDemux * demux, gboolean force)
guint64 dist = 0;
GstClockTime prev_pts;
guint64 prev_offset;
gint n;
GST_DEBUG_OBJECT (demux, "Parsing [moof]");
@ -5873,15 +5885,25 @@ gst_qtdemux_process_adapter (GstQTDemux * demux, gboolean force)
ret = GST_FLOW_ERROR;
goto done;
}
/* in MSS we need to expose the pads after the first moof as we won't get a moov */
if (demux->mss_mode && !demux->exposed) {
if (!demux->pending_newsegment) {
GstSegment segment;
gst_segment_init (&segment, GST_FORMAT_TIME);
GST_DEBUG_OBJECT (demux, "new pending_newsegment");
demux->pending_newsegment = gst_event_new_segment (&segment);
/* in MSS we need to expose the pads after the first moof as we won't get a moov
* Also, fragmented format need to be exposed if a moov have no valid sample data */
if (demux->mss_mode || demux->pending_configure) {
if (!demux->exposed) {
if (!demux->pending_newsegment) {
GstSegment segment;
gst_segment_init (&segment, GST_FORMAT_TIME);
GST_DEBUG_OBJECT (demux, "new pending_newsegment");
demux->pending_newsegment = gst_event_new_segment (&segment);
}
qtdemux_expose_streams (demux);
} else {
for (n = 0; n < demux->n_streams; n++) {
QtDemuxStream *stream = demux->streams[n];
gst_qtdemux_configure_stream (demux, stream);
}
}
qtdemux_expose_streams (demux);
gst_qtdemux_check_send_pending_segment (demux);
demux->pending_configure = FALSE;
}
} else {
GST_DEBUG_OBJECT (demux, "Discarding [moof]");

1
gst/isomp4/qtdemux.h
View file

@ -89,6 +89,7 @@ struct _GstQTDemux {
gboolean posted_redirect;
/* push based variables */
gboolean pending_configure;
guint neededbytes;
guint todrop;
GstAdapter *adapter;