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streamsynchronizer: send preroll buffer when delaying preroll eos

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That is, if eos is received which will not be forwarded, and the stream
has not yet seen any data, then send a buffer to preroll downstream
(which might otherwise be accomplished by the eos event).
This commit is contained in:
Mark Nauwelaerts 2010-08-12 10:02:56 +02:00
parent 2379e96bbc
commit c1a705acbc
1 changed files with 18 additions and 0 deletions
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18
gst/playback/gststreamsynchronizer.c
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@ -67,6 +67,7 @@ typedef struct
gboolean new_stream;
gboolean drop_discont;
gboolean is_eos;
gboolean seen_data;
gint64 running_time_diff;
} GstStream;
@ -446,6 +447,7 @@ gst_stream_synchronizer_sink_event (GstPad * pad, GstEvent * event)
stream->wait = FALSE;
stream->new_stream = FALSE;
stream->drop_discont = FALSE;
stream->seen_data = FALSE;
}
GST_STREAM_SYNCHRONIZER_UNLOCK (self);
break;
@ -454,7 +456,9 @@ gst_stream_synchronizer_sink_event (GstPad * pad, GstEvent * event)
GstStream *stream;
GList *l;
gboolean all_eos = TRUE;
gboolean seen_data;
GSList *pads = NULL;
GstPad *srcpad;
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
@ -463,6 +467,9 @@ gst_stream_synchronizer_sink_event (GstPad * pad, GstEvent * event)
stream->is_eos = TRUE;
}
seen_data = stream->seen_data;
srcpad = gst_object_ref (stream->srcpad);
for (l = self->streams; l; l = l->next) {
GstStream *ostream = l->data;
@ -496,7 +503,17 @@ gst_stream_synchronizer_sink_event (GstPad * pad, GstEvent * event)
epad = g_slist_next (epad);
}
g_slist_free (pads);
} else {
/* if EOS, but no data has passed, then send something to replace EOS
* for preroll purposes */
if (!seen_data) {
GstBuffer *buf = gst_buffer_new ();
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_PREROLL);
gst_pad_push (srcpad, buf);
}
}
gst_object_unref (srcpad);
goto done;
break;
}
@ -563,6 +580,7 @@ gst_stream_synchronizer_sink_chain (GstPad * pad, GstBuffer * buffer)
GST_STREAM_SYNCHRONIZER_LOCK (self);
stream = gst_pad_get_element_private (pad);
stream->seen_data = TRUE;
if (stream && stream->drop_discont) {
buffer = gst_buffer_make_metadata_writable (buffer);
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT);