ingest: support capture of pipeline dot files

annotation_pipeline/ingest.cpp

@@ -103,6 +103,10 @@ handle_keyboard (GIOChannel * source, GIOCondition cond, CustomData * data)
   } else {
 	  gint val = -1;
 	  switch (g_ascii_tolower (line[0])) {
+	    case 'd':
+	    	gst_debug_bin_to_dot_file_with_ts(GST_BIN(data->pipeline),
+	    			GST_DEBUG_GRAPH_SHOW_ALL, "pipeline");
+	    	break;
 		case 'p':
 		  data->playing = !data->playing;
 		  gst_element_set_state (data->pipeline,
@@ -160,6 +164,7 @@ main (int argc, char *argv[])
   std::string fname;
   if (argc > 2)
 	  fname = argv[2];
+  g_setenv("GST_DEBUG_DUMP_DOT_DIR", "/tmp", TRUE);
   gst_init (&argc, &argv);
 
   /* Initialize our data structure */
@@ -168,6 +173,7 @@ main (int argc, char *argv[])
   /* Print usage map */
   g_print ("USAGE: Choose one of the following options, then press enter:\n"
       " 'p' to toggle between PAUSE and PLAY\n"
+	  " 'd' to capture pipeline diagram\n"
 	  " 'q' to quit\n"
 	  " 'g' to enter gain mode\n"
 	  " 'h' to enter gain-auto mode\n"