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rtprtxreceive: add ssrc-map property

Browse source 
Mirroring the rtxsend, this allows the application to "pre-map" the
retransmission-ssrcs to the "real" ssrc, if this information is known.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1878>
This commit is contained in:
Havard Graff 2016-06-27 14:28:06 +02:00 committed by GStreamer Marge Bot
parent 671c89c392
commit 6f57199958
3 changed files with 42 additions and 0 deletions
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11
subprojects/gst-plugins-good/docs/gst_plugins_cache.json
View file

@ -18248,6 +18248,17 @@
"readable": true,
"type": "GstStructure",
"writable": true
},
"ssrc-map": {
"blurb": "Map of SSRCs to their retransmission SSRCs for SSRC-multiplexed mode",
"conditionally-available": false,
"construct": false,
"construct-only": false,
"controllable": false,
"mutable": "null",
"readable": false,
"type": "GstStructure",
"writable": true
}
},
"rank": "none"

29
subprojects/gst-plugins-good/gst/rtpmanager/gstrtprtxreceive.c
View file

@ -159,6 +159,7 @@ GST_DEBUG_CATEGORY_STATIC (gst_rtp_rtx_receive_debug);
enum
{
PROP_0,
PROP_SSRC_MAP,
PROP_PAYLOAD_TYPE_MAP,
PROP_NUM_RTX_REQUESTS,
PROP_NUM_RTX_PACKETS,
@ -210,6 +211,22 @@ gst_rtp_rtx_receive_class_init (GstRtpRtxReceiveClass * klass)
gobject_class->set_property = gst_rtp_rtx_receive_set_property;
gobject_class->finalize = gst_rtp_rtx_receive_finalize;
/**
* GstRtpRtxReceive:ssrc-map:
*
* Map of SSRCs to their retransmission SSRCs for SSRC-multiplexed mode.
*
* If an application know this information already (WebRTC signals this
* in their SDP), it can allow the rtxreceive element to know a packet
* is a "valid" RTX packet even if it has not been requested.
*
* Since: 1.22
*/
g_object_class_install_property (gobject_class, PROP_SSRC_MAP,
g_param_spec_boxed ("ssrc-map", "SSRC Map",
"Map of SSRCs to their retransmission SSRCs for SSRC-multiplexed mode",
GST_TYPE_STRUCTURE, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PAYLOAD_TYPE_MAP,
g_param_spec_boxed ("payload-type-map", "Payload Type Map",
"Map of original payload types to their retransmission payload types",
@ -261,6 +278,8 @@ gst_rtp_rtx_receive_finalize (GObject * object)
GstRtpRtxReceive *rtx = GST_RTP_RTX_RECEIVE_CAST (object);
g_hash_table_unref (rtx->ssrc2_ssrc1_map);
if (rtx->external_ssrc_map)
gst_structure_free (rtx->external_ssrc_map);
g_hash_table_unref (rtx->seqnum_ssrc1_map);
g_hash_table_unref (rtx->rtx_pt_map);
if (rtx->rtx_pt_map_structure)
@ -761,6 +780,16 @@ gst_rtp_rtx_receive_set_property (GObject * object,
GstRtpRtxReceive *rtx = GST_RTP_RTX_RECEIVE_CAST (object);
switch (prop_id) {
case PROP_SSRC_MAP:
GST_OBJECT_LOCK (rtx);
if (rtx->external_ssrc_map)
gst_structure_free (rtx->external_ssrc_map);
rtx->external_ssrc_map = g_value_dup_boxed (value);
g_hash_table_remove_all (rtx->ssrc2_ssrc1_map);
gst_structure_foreach (rtx->external_ssrc_map,
structure_to_hash_table_inv, rtx->ssrc2_ssrc1_map);
GST_OBJECT_UNLOCK (rtx);
break;
case PROP_PAYLOAD_TYPE_MAP:
GST_OBJECT_LOCK (rtx);
if (rtx->rtx_pt_map_structure)

2
subprojects/gst-plugins-good/gst/rtpmanager/gstrtprtxreceive.h
View file

@ -52,6 +52,8 @@ struct _GstRtpRtxReceive
* as we make sure all ssrc are unique */
GHashTable *ssrc2_ssrc1_map;
GstStructure *external_ssrc_map;
/* contains seqnum of request packets of whom their ssrc have
* not been associated to a rtx stream yet */
GHashTable *seqnum_ssrc1_map;