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gstrtpsession: suggest upstream to use the new "internal-ssrc" after a collision

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When a collision is found on the internal ssrc, we have to change it.
Ideally, we want also the payloader upstream to follow this change and use
the new internal ssrc. Ideally we want this condition to be always met:
if there is one payloader sending on this session, its ssrc should match the
internal ssrc.
This commit is contained in:
George Kiagiadakis 2013-12-26 12:05:19 +02:00 committed by Wim Taymans
parent 17517ca491
commit 5ddf6a5e32
1 changed files with 19 additions and 3 deletions
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22
gst/rtpmanager/gstrtpsession.c
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@ -333,9 +333,25 @@ on_ssrc_collision (RTPSession * session, RTPSource * src, GstRtpSession * sess)
GST_RTP_SESSION_UNLOCK (sess);
if (send_rtp_sink) {
GstEvent *event = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM,
gst_structure_new ("GstRTPCollision", "ssrc", G_TYPE_UINT,
(guint) src->ssrc, NULL));
GstStructure *structure;
GstEvent *event;
RTPSource *internal_src;
guint32 suggested_ssrc;
structure = gst_structure_new ("GstRTPCollision", "ssrc", G_TYPE_UINT,
(guint) src->ssrc, NULL);
/* if there is no source using the suggested ssrc, most probably because
* this ssrc has just collided, suggest upstream to use it */
suggested_ssrc = rtp_session_suggest_ssrc (session);
internal_src = rtp_session_get_source_by_ssrc (session, suggested_ssrc);
if (!internal_src)
gst_structure_set (structure, "suggested-ssrc", G_TYPE_UINT,
(guint) suggested_ssrc, NULL);
else
g_object_unref (internal_src);
event = gst_event_new_custom (GST_EVENT_CUSTOM_UPSTREAM, structure);
gst_pad_push_event (send_rtp_sink, event);
gst_object_unref (send_rtp_sink);
}