How to use g_signal_connect to connect gstrtpbin with depayloader(in both case Audio+Video together)

[Andy_Milestone]

Well, I had the same problem, because I am working on softphone with 
video- and audio support.

I am not sure If there is an "intelligent" solution for this problem, 
but I checked the payload-type, which is given in this line:
 >    g_print ("new payload on pad: %s\n", GST_PAD_NAME (new_pad));
If its payloadtype 0 then I connect the rtpbin with the audio-depay and 
if its 96 I connect it to the video-depay. In my case the rtpbin is 
defined as a pointer in a global structure, therefore I can decide in 
the callback which depayloader should be used.

Do want to realize undirectional or bidirectional streaming?


Andreas


Am 01.08.2011 06:15, schrieb arpi d:
> I am writing client code which receives audio+video.
>
> When I am trying to connect rtpbin and depayloader how to know which
> session is this?
>
> Actually,I am writing the code in C and am trying to use g_signal_connect.
> So that I can use
>   g_signal_connect (rtpbin, "pad-added", G_CALLBACK (pad_added_cb),
> videodepay);
>
>   g_signal_connect (rtpbin, "pad-added", G_CALLBACK (pad_added_cb),
> audiodepay);
>
> and the pad_added_cb handler is:
>
> |/* will be called when rtpbin has validated a payload that we can depayload */
> |static void
>
> |pad_added_cb (GstElement * rtpbin, GstPad * new_pad, GstElement * depay)
> {
>    GstPad *sinkpad;
>    GstPadLinkReturn lres;
>
>    g_print ("new payload on pad: %s\n", GST_PAD_NAME (new_pad));
>
>    sinkpad = gst_element_get_static_pad (depay,"sink");
>    g_assert (sinkpad);
>
>    lres = gst_pad_link (new_pad, sinkpad);
>    g_assert (lres == GST_PAD_LINK_OK);
>    gst_object_unref (sinkpad);
> }|
>
>
> my client pipeline is:
>
> VIDEO_DEC="rtph264depay ! ffdec_h264"
> AUDIO_DEC="rtpmp4gdepay ! faad"
>
> VIDEO_SINK="ffmpegcolorspace ! autovideosink"
> AUDIO_SINK="autoaudiosink"
> DEST=127.0.0.1
>
> LATENCY=100
>
> gst-launch -v gstrtpbin name=rtpbin                   \
>      udpsrc caps=$VIDEO_CAPS port=5000 ! rtpbin.recv_rtp_sink_0         \
>        rtpbin. ! $VIDEO_DEC ! $VIDEO_SINK                               \
>      udpsrc port=5001 ! rtpbin.recv_rtcp_sink_0                         \
>   rtpbin.send_rtcp_src_0 ! udpsink port=5005 host=$DEST sync=false
> async=false
> udpsrc caps=$AUDIO_CAPS port=5002 ! rtpbin.recv_rtp_sink_1              \
> rtpbin. ! $AUDIO_DEC ! $AUDIO_SINK                                \
> udpsrc port=5003 ! rtpbin.recv_rtcp_sink_1                              \
> rtpbin.send_rtcp_src_1 ! udpsink port=5007 host=$DEST sync=false async=false
> Same thing as above pipeline in C language I am writing.
> Please reply.
> If you know other way please do let  me know.
> Thaks in advance.
>
>
>
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