<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> <tt>ever had that situation where you have been looking for an answer and right after you ask, you find it?</tt> <tt> </tt> <tt>so, thanks.. but never mind.</tt> <tt> </tt> <tt>Ron </tt> <div class="moz-cite-prefix">On 5/31/19 5:02 PM, R C wrote: </div> <blockquote type="cite" cite="mid:3529bdd0-8b1f-9214-334d-2bff8f3f8eaa@gmail.com"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <tt>Hello,</tt> <tt> </tt> <tt>I have been playing with the "basic tutorial" C API a bit, and can create a stream in c code. However, when the strea is running, how can I quit/terminate that stream?</tt> <tt> </tt> <tt>For example, basic tutorial 3:</tt> <tt> </tt> <tt>After creating a pipeline, one can start it. Then there's a loop that listens for msgs from the 'bus', in a loop. Whenever there is a msg, the loop runs through a switch, and and listens for a new msg again.</tt> <tt>I want to create "some sort of event" that terminates that loop (for example existence (or not) of a lock file.).</tt> <tt>(or can I create a handler, set an option, that will make </tt><tt><tt>gst_element_get_bus(..) return, even if there isn't a msg, with an empty msg or so? (I am fairly sure, </tt></tt><tt><tt><tt><tt>gst_element_get_bus, is not returning and only will if there is a msg waiting.) </tt></tt></tt></tt> <tt> </tt> <tt>Here's a/the code snippet from the basic tutorial 3 example:</tt> <tt> /* Start playing */ ret = gst_element_set_state (data.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 (data.pipeline); return -1; } /* Listen to the bus */ bus = gst_element_get_bus (data.pipeline); do { msg = gst_bus_timed_pop_filtered (bus, GST_CLOCK_TIME_NONE, GST_MESSAGE_STATE_CHANGED | GST_MESSAGE_ERROR | GST_MESSAGE_EOS); /* 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); terminate = TRUE; break; case GST_MESSAGE_EOS: g_print ("End-Of-Stream reached.\n"); terminate = TRUE; break; case GST_MESSAGE_STATE_CHANGED: /* We are only interested in state-changed messages from the pipeline */ if (GST_MESSAGE_SRC (msg) == GST_OBJECT (data.pipeline)) { GstState old_state, new_state, pending_state; gst_message_parse_state_changed (msg, &old_state, &new_state, &pending_state); g_print ("Pipeline state changed from %s to %s:\n", gst_element_state_get_name (old_state), gst_element_state_get_name (new_state)); } break; default: /* We should not reach here */ g_printerr ("Unexpected message received.\n"); break; } gst_message_unref (msg); } } while (!terminate); </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> <tt> </tt> </blockquote> </body> </html>