<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body bgcolor="#ffffff" text="#000000"> Hi, I am trying to send an event to a sink element from my application. I am not sure though why the gst_element_send_event() returns 0 in this case. Any ideas, please? Here is some example code: In application: void SendNewBWEvent() {     GstEvent*      eventP;     GstStructure*  s;     GstEventType   eventType    = GST_EVENT_CUSTOM_DOWNSTREAM;     s = gst_structure_new("vico",               "msg", G_TYPE_STRING, "newBW",               "bw", G_TYPE_INT, newBW,               "port", G_TYPE_INT, port,               NULL);     if (s == NULL)     exit_witherror(1, ("gst_structure_new returned NULL"));     eventP = gst_event_new_custom(eventType, s);     if (eventP == NULL)     exit_witherror(1, ("gst_event_new returned NULL"));     print("Sending new BW event\n");     if (!gst_element_send_event(flowP->pipeline->gstParseLaunch.pipeline, eventP))         exit_witherror(36, ("error sending newBW event to pipeline")); } In element: -- gstbase_sink_class->event   = GST_DEBUG_FUNCPTR (gst_radvideosend_sink_event); --- static gboolean gst_radvideosend_sink_event (GstBaseSink * bsink, GstEvent * event) {     int bandWidth, port;     GstRadvideosendSink *sink = GST_RADVIDEOSEND_SINK (bsink);     GST_DEBUG("Received EVENT:::::::::::");       switch (GST_EVENT_TYPE (event)) {     case GST_EVENT_CUSTOM_DOWNSTREAM:     {     const GstStructure *structure;     const gchar *event_type;     structure = gst_event_get_structure (event);     g_return_val_if_fail (structure != NULL, FALSE);     event_type = gst_structure_get_string (structure, "msg");     g_return_val_if_fail (event_type != NULL, FALSE);     if (strcmp (event_type, "newBW") == 0) {         gst_structure_get_int(structure, "bw", &bandWidth);         gst_structure_get_int(structure, "port", &port);         if (sink->NetParams.uiRemotePort == port) {         GST_DEBUG("Received EVENT new BW %d, port %d:::::::::::", bandWidth, port);         ChangeTransmittedBitrate(sink->hTrStream, bandWidth);         }         gst_event_unref (event);     }     else if (strcmp (event_type, "VFU") == 0) {         gst_structure_get_int(structure, "port", &port);         if (sink->NetParams.uiRemotePort == port) {         GST_DEBUG("Received EVENT new IF port %d:::::::::::", port);         SendIFrame(sink->hTrStream);         }         gst_event_unref (event);             }     break;     }     default:     break;     }     if (GST_BASE_SINK_CLASS (parent_class)->event) {     return GST_BASE_SINK_CLASS (parent_class)->event (bsink, event);     } else {     return TRUE;     } } <pre class="moz-signature" cols="800">-- Mattias Frank Barthel Vía Augusta 177 08021 Barcelona (Spain) T. 0034-93-365-3309 TELEFÓNICA R&D </pre> </body> </html>