streamer inside thread

[Michael Grüner]

Hi,  

Here's what I usually do to troubleshoot assertions like those. Build your app and related packages with debugging symbols enabled, and run it like:

ulimit -c unlimited
G_DEBUG=fatal_warnings ./app 

That will generate a core dump when an assertion is failed, which you can analyze with GDB or alike. 

Michael

-----Original Message-----
From: d <dudi017 at gmail.com>
To: gstreamer-devel at lists.freedesktop.org
Sent: Fri, 31 Jan 2014 19:10
Subject: streamer inside thread

Hi, 

Im trying to transmit video from thread.
the program works perfectly if I put it outside the thread, but once I put
it inside the thread, im getting this error:

(program:14481): GStreamer-CRITICAL **: gst_mini_object_unref: assertion
`GST_IS_MINI_OBJECT (mini_object)' failed

(program:14481): GLib-GObject-CRITICAL **: g_object_unref: assertion
`G_IS_OBJECT (object)' failed


this is the content of the thread: (im kind of sure that the problem is with
--->   gst_init (&rcvStruct.argc, &rcvStruct.argv);  )

void *RTPfun(void * rcv)      //rcv is struct that contain argc, argv, and
some IP address
{
   struct multiple_var rcvStruct =*(struct multiple_var *) rcv;
   char *IP= (char*)rcvStruct.client_addr;
   
   GstElement *pipeline, *src, *encoder, *parse, *rtp, *sink;
   GstBus *bus;
   GstMessage *msg;
   GstStateChangeReturn ret;
   GMainLoop *loop;
   
   printf("argc: %d\n",rcvStruct.argc);
   //gst_init (&argc, &argv);
   gst_init (&rcvStruct.argc, &rcvStruct.argv);
   printf("RTPthread: client IP: %s\n",IP);

  free (rcv);

  src = gst_element_factory_make ("videotestsrc", "src"); //v4l2src
  encoder = gst_element_factory_make ("x264enc","encoder");
  rtp = gst_element_factory_make ("rtph264pay", "rtp");
  sink = gst_element_factory_make ("udpsink", "sink");

  pipeline = gst_pipeline_new ("test-pipeline");

  if (!pipeline) g_printerr ("Not pipeline.\n");
  if (!src) g_printerr ("Not src.\n");
  if (!encoder) g_printerr ("Not encoder.\n");
  if (!rtp) g_printerr ("Not rtp.\n");
  if (!sink) g_printerr ("Not sink.\n");

  g_object_set(G_OBJECT(sink),"host",IP,NULL);
  g_object_set(G_OBJECT(sink),"port",5000,NULL);

  // Build the pipeline 
  gst_bin_add_many (GST_BIN (pipeline), src, encoder, rtp, sink, NULL);
  if (gst_element_link_many (src, encoder, rtp, sink, NULL) != TRUE) {
    g_printerr ("Elements could not be linked.\n");
    gst_object_unref (pipeline);
    return 0;//-1
  }


  // Start playing 
  ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
  if (ret == GST_STATE_CHANGE_FAILURE) {
    g_printerr ("Unable to set the pipeline to the playing state.\n");
    gst_object_unref (pipeline);
    return 0;//-1
  }


  // Parse message 
  if (msg != NULL) {
    GError *err;
    gchar *debug_info;
     
    switch (GST_MESSAGE_TYPE (msg)) {
      case GST_MESSAGE_ERROR:
        gst_message_parse_error (msg, &err, &debug_info);
        g_printerr ("Error received from element %s: %s\n", GST_OBJECT_NAME
(msg->src), err->message);
        g_printerr ("Debugging information: %s\n", debug_info ? debug_info :
"none");
        g_clear_error (&err);
        g_free (debug_info);
        break;
      case GST_MESSAGE_EOS:
        g_print ("End-Of-Stream reached.\n");
        break;
      default:
         //We should not reach here because we only asked for ERRORs and EOS 
        g_printerr ("Unexpected message received.\n");
        break;
    }
    gst_message_unref (msg);
  }


  gst_object_unref (bus);
  gst_element_set_state (pipeline, GST_STATE_NULL);
  gst_object_unref (pipeline);
  g_printerr("finished\n");


   return 0;
}


If someone know what to do it will be great!
thanks.



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