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webrtcbin: Store the ssrc of the last received packet

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1448>
This commit is contained in:
Olivier Crête 2021-12-14 11:28:13 -05:00
parent fc7e7f5ccc
commit 29befed685
2 changed files with 36 additions and 0 deletions
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34
subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.c
View file

@ -439,6 +439,37 @@ gst_webrtc_bin_pad_init (GstWebRTCBinPad * pad)
{
}
static GstPadProbeReturn
webrtc_bin_pad_buffer_cb (GstPad * pad, GstPadProbeInfo * info,
gpointer user_data)
{
GstWebRTCBinPad *wpad;
GstBuffer *buf;
GstRTPBuffer rtpbuf = GST_RTP_BUFFER_INIT;
if (info->type & GST_PAD_PROBE_TYPE_BUFFER) {
buf = GST_PAD_PROBE_INFO_BUFFER (info);
} else {
GstBufferList *list;
list = GST_PAD_PROBE_INFO_BUFFER_LIST (info);
buf = gst_buffer_list_get (list, 0);
}
if (buf == NULL)
return GST_PAD_PROBE_OK;
if (!gst_rtp_buffer_map (buf, GST_MAP_READ, &rtpbuf))
return GST_PAD_PROBE_OK;
wpad = GST_WEBRTC_BIN_PAD (pad);
wpad->last_ssrc = gst_rtp_buffer_get_ssrc (&rtpbuf);
gst_rtp_buffer_unmap (&rtpbuf);
return GST_PAD_PROBE_OK;
}
static GstWebRTCBinPad *
gst_webrtc_bin_pad_new (const gchar * name, GstPadDirection direction)
{
@ -460,6 +491,9 @@ gst_webrtc_bin_pad_new (const gchar * name, GstPadDirection direction)
gst_pad_set_event_function (GST_PAD (pad), gst_webrtcbin_sink_event);
gst_pad_set_query_function (GST_PAD (pad), gst_webrtcbin_sink_query);
gst_pad_add_probe (GST_PAD (pad), GST_PAD_PROBE_TYPE_BUFFER |
GST_PAD_PROBE_TYPE_BUFFER_LIST, webrtc_bin_pad_buffer_cb, NULL, NULL);
GST_DEBUG_OBJECT (pad, "new visible pad with direction %s",
direction == GST_PAD_SRC ? "src" : "sink");
return pad;

2
subprojects/gst-plugins-bad/ext/webrtc/gstwebrtcbin.h
View file

@ -46,6 +46,8 @@ struct _GstWebRTCBinPad
GstWebRTCRTPTransceiver *trans;
gulong block_id;
guint32 last_ssrc;
GstCaps *received_caps;
};