Hi,
With reference to the attached snippet.
Video playback works Ok (ish), but I don't get any audio. I have tried fiddling
with the buffer-mode, but this did not help.
I do get callbacks for both the video and audio dynamic pads.
I am aware that I should probably check the caps in order to select the correct
depayloader. but for now would be happy if I could get A/V on an MPEG2 program
stream...
Any suggestions welcome :)
Best regards
Steve
static void rtp_pad_added_cb (GstElement * rtpbin, GstPad * new_pad, GstElement * depay)
{
GstPad* sinkpad;
GstPadLinkReturn lres;
gchar* pad_name = GST_PAD_NAME (new_pad);
GstElement* audio_depay;
g_print ("new payload on pad: %s\n", pad_name);
if (!strncmp(pad_name, "recv_rtp_src_0", 14)) { // Video pad
sinkpad = gst_element_get_static_pad(depay, "sink");
g_assert (sinkpad);
lres = gst_pad_link (new_pad, sinkpad);
gst_object_unref(sinkpad);
g_assert (lres == GST_PAD_LINK_OK);
} else if (!strncmp(pad_name, "recv_rtp_src_1", 14)) { // Audio pad
sinkpad = gst_element_get_static_pad(media_player.audiodepay, "sink");
g_assert (sinkpad);
lres = gst_pad_link (new_pad, sinkpad);
gst_object_unref(sinkpad);
g_assert (lres == GST_PAD_LINK_OK);
}
g_free (pad_name);
}
static int roll_rtsp_player(MEDIA_PLAYER_STATUS* p_player, const char* filename)
{
gboolean res;
GstPadLinkReturn lres;
/* the pipeline to hold everything */
p_player->pipeline = gst_pipeline_new (NULL);
g_assert (p_player->pipeline);
/* the rtsp we will use for RTP and RTCP */
p_player->rtspsrc = gst_element_factory_make ("rtspsrc", "rtsp_src");
g_assert (p_player->rtspsrc);
g_object_set (p_player->rtspsrc, "location", filename, NULL);
g_object_set (p_player->rtspsrc, "latency", LATENCY, NULL);
g_object_set (p_player->rtspsrc, "buffer-mode", BUFFER_MODE, NULL);
gst_bin_add (GST_BIN(p_player->pipeline), p_player->rtspsrc);
/* the video depayloading and decoding */
p_player->videodepay = gst_element_factory_make (VIDEO_DEPAY, "videodepay");
g_assert (p_player->videodepay);
p_player->videodec = gst_element_factory_make (VIDEO_DEC, "videodec");
g_assert (p_player->videodec);
p_player->video_sink = gst_element_factory_make (VIDEO_SINK, "video_sink");
g_assert (p_player->video_sink);
gst_bin_add_many (GST_BIN (p_player->pipeline), p_player->videodepay,
p_player->videodec, p_player->video_sink, NULL);
res = gst_element_link_many (p_player->videodepay, p_player->videodec,
p_player->video_sink, NULL);
g_assert (res == TRUE);
/* Audio depayloading, etc */
p_player->audiodepay = gst_element_factory_make (AUDIO_DEPAY, "audiodepay");
g_assert (p_player->audiodepay);
p_player->audio_sink = gst_element_factory_make (AUDIO_SINK, "audio_sink");
g_assert (p_player->audio_sink);
gst_bin_add_many (GST_BIN (p_player->pipeline), p_player->audiodepay, p_player->audio_sink, NULL);
res = gst_element_link_many (p_player->audiodepay, p_player->audio_sink, NULL);
g_assert (res == TRUE);
/* Connect the pad-added signal so that we can link dynamic pads */
g_signal_connect (p_player->rtspsrc, "pad-added", G_CALLBACK (rtp_pad_added_cb),
p_player->videodepay);
/* set the pipeline to playing */
g_print ("starting receiver pipeline\n");
gst_element_set_state (p_player->pipeline, GST_STATE_PLAYING);
/* we need to run a GLib main loop to get the messages */
p_player->loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (p_player->loop);
g_print ("stopping receiver pipeline\n");
gst_element_set_state (p_player->pipeline, GST_STATE_NULL);
gst_object_unref (p_player->pipeline);
return 0;
}
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