GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS : No files created

[adrien Schwartzentruber]

Hello,

I'm really new over here, and I had some difficulties to dump a pipe inside
my program. Indeed, I configured the GST_DEBUG_DUMP_DOT_DIR to a writtable
path, I launched gst-launch and got some files, but when I'm calling
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS inside my program, files aren't created.

Anyone have an idea about this issue ? 

Thank you.

Gstreamer Version : 0.10.36
System : Ubuntu 12.04
IDE : eclipse 
Folder : ~/tmp with rwxrwxrwx
GST_DEBUG_DUMP_DOT_DIR=~/tmp

Program code : 
_____________________________________________
/*
 * main.cpp
 *
 *  Created on: Jan 16, 2013
 *      Author: ubuntu
 */

#include <gst/gst.h>

int main(int argc, char * argv[] ) {
	printf("Gstreamer Tutorial 1 : playBin2\n");
	GstBus * bus;
	GstMessage * msg;

	gst_init(NULL,NULL);

	GstElement* pipeline = gst_parse_launch("playbin2
uri=rtsp://192.168.1.12:8554/stream",NULL);
	if (pipeline != NULL) {
		GstStateChangeReturn retr =
gst_element_set_state(pipeline,GST_STATE_PLAYING);
		if (true) {
			GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS(GST_BIN(pipeline), 
GST_DEBUG_GRAPH_SHOW_ALL, "tuto_01.dot");
			bus = gst_element_get_bus (pipeline);
			msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE,
GST_MESSAGE_ERROR | GST_MESSAGE_EOS);


		} else {
			printf("Gstreamer Tutorial 1 : Change State failed\n");
		}

	} else {
		printf("Gstreamer Tutorial 1 : Create pipeline failed\n");
	}


	  if (msg != NULL)
	    gst_message_unref (msg);
	  if (bus != NULL)
		  gst_object_unref (bus);
	  if (pipeline != NULL) {
		  gst_element_set_state (pipeline, GST_STATE_NULL);
		  gst_object_unref (pipeline);
	  }
	  return 0;

}




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