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rtpbasedepayload: Make stats creation threadsafe, fix a CRITICAL

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Use the object lock to protect the internal segment when updating
against access from getting the stats property.

Fix a critical in gst-inspect or when retrieving the stats
before any segment has arrived by checking whether the
segment has been initted..
This commit is contained in:
Jan Schmidt 2015-08-15 23:33:14 +10:00
parent f188a023c7
commit 95eb641821
1 changed files with 19 additions and 7 deletions
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26
gst-libs/gst/rtp/gstrtpbasedepayload.c
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@ -561,7 +561,10 @@ gst_rtp_base_depayload_handle_event (GstRTPBaseDepayload * filter,
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
GST_OBJECT_LOCK (filter);
gst_segment_init (&filter->segment, GST_FORMAT_UNDEFINED);
GST_OBJECT_UNLOCK (filter);
filter->need_newsegment = TRUE;
filter->priv->next_seqnum = -1;
gst_event_replace (&filter->priv->segment_event, NULL);
@ -578,7 +581,10 @@ gst_rtp_base_depayload_handle_event (GstRTPBaseDepayload * filter,
}
case GST_EVENT_SEGMENT:
{
GST_OBJECT_LOCK (filter);
gst_event_copy_segment (event, &filter->segment);
GST_OBJECT_UNLOCK (filter);
/* don't pass the event downstream, we generate our own segment including
* the NTP time and other things we receive in caps */
forward = FALSE;
@ -648,6 +654,10 @@ create_segment_event (GstRTPBaseDepayload * filter, guint rtptime,
priv = filter->priv;
/* We don't need the object lock around - the segment
* can't change here while we're holding the STREAM_LOCK
*/
/* determining the start of the segment */
start = filter->segment.start;
if (priv->clock_base != -1 && position != -1) {
@ -897,16 +907,18 @@ gst_rtp_base_depayload_create_stats (GstRTPBaseDepayload * depayload)
{
GstRTPBaseDepayloadPrivate *priv;
GstStructure *s;
GstClockTime pts, dts;
GstClockTime pts = GST_CLOCK_TIME_NONE, dts = GST_CLOCK_TIME_NONE;
priv = depayload->priv;
/* FIXME this isn't thread safe */
pts = gst_segment_to_running_time (&depayload->segment, GST_FORMAT_TIME,
priv->pts);
dts = gst_segment_to_running_time (&depayload->segment, GST_FORMAT_TIME,
priv->dts);
GST_OBJECT_LOCK (depayload);
if (depayload->segment.format != GST_FORMAT_UNDEFINED) {
pts = gst_segment_to_running_time (&depayload->segment, GST_FORMAT_TIME,
priv->pts);
dts = gst_segment_to_running_time (&depayload->segment, GST_FORMAT_TIME,
priv->dts);
}
GST_OBJECT_UNLOCK (depayload);
s = gst_structure_new ("application/x-rtp-depayload-stats",
"clock_rate", G_TYPE_UINT, depayload->clock_rate,