<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> </head> <body bgcolor="#ffffff" text="#000000"> Hello, I have created an audio-recorder application using the GStreamer framework. My question is: How to catch and react to the EOS (end of stream, end of recording) message? When starting a recording the state change from NULL -> PLAYING works fine. My program now updates the GUI (buttons, icons in the GUI) when the recording changes state from NULL -> READY -> PLAYING. This works OK.  Also state change from PLAYING -> PAUSED works fine. My program captures the PAUSED message and updates the GUI. This is OK. But how to catch the STOP message (when the recording stops/ends) ?  Obviously Gstreamer has no STOP/STREAM END message.  Are there event-chain for PLAYING -> PAUSED -> STOP/NULL? I want to update the GUI solely via the Gstreamer's state-change messages/events. Why? Because the recording can be controlled from various places; directly from the GUI using buttons, it can be controlled from DBus by Media Players (like Amarok/RhythmBox/Banshee and there are threads involved etc.). So I want to update the GUI solely via (event's) state changes. Here is how I setup the callback functions to receive events/messages from the bus. See:  rec_state_changed_cb(...) function in <a class="moz-txt-link-freetext" href="http://www.futuredesktop.com/tmp/gst-recorder.c">http://www.futuredesktop.com/tmp/gst-recorder.c</a> The message/event handlers are set up like this (in the rec_create_pipeline(...) function) : // Add a message handlers GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline)); gst_bus_add_signal_watch(bus); // Detect state changes g_signal_connect(bus, "message::state-changed", G_CALLBACK(rec_state_changed_cb), NULL); // Monitor sound level/amplitude g_signal_connect(bus, "message::element", G_CALLBACK(rec_level_message_cb), NULL); // Catch error messages g_signal_connect(bus, "message::error", G_CALLBACK(rec_pipeline_error_cb), NULL); // EOS g_signal_connect(bus, "message::eos", G_CALLBACK(rec_eos_msg_cb), NULL); gst_object_unref(bus); ---- Thanks,   Osmo Antero (Moma)   <a class="moz-txt-link-freetext" href="http://www.futuredesktop.org">http://www.futuredesktop.org</a> </body> </html>