Hello All,
I want to assign the SSRC of RTP Packets dynamically.
The scenario is as below:
I have funneled multiple streams into one. At runtime I check if the frame is 1st input source, I assign SSRC as 1, if the frame is from 2nd input source, I assign SSRC as 2 and so on..
To assign the SSRC, I use probe on "src" pad of "rtph264pay" element.
The code snippet for the probe is shown below:
static GstPadProbeReturn setssrc(GstPad *pad, GstPadProbeInfo *info, gpointer user_data)
{
GstBuffer *buffer = NULL;
buffer = GST_PAD_PROBE_INFO_BUFFER(info);
GstRTPBuffer rtpBuffer;
memset(&rtpBuffer, 0, sizeof(GstRTPBuffer));
if (buffer != NULL)
{
if (gst_rtp_buffer_map(buffer, (GstMapFlags)GST_MAP_READWRITE, &rtpBuffer))
{
g_print("buffer mapped\n");
gst_rtp_buffer_set_ssrc(&rtpBuffer, 222);
gst_rtp_buffer_unmap(&rtpBuffer);
}
else
g_print("buffer not mapped\n");
}
return GST_PAD_PROBE_OK;
}
This code sets SSRC only for some of the packets and the output at the receiver side (by using gst_rtp_buffer_get_ssrc)) is as below:
-145555887
222
222
222
222
-145555887
-145555887
-145555887
-145555887
Can anyone please tell me where is the problem and how to resolve it?
Thanks,
Priyanka
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