<div dir="ltr"><div>Most likely the pipeline is getting stuck trying to change state. You want to ensure that you put in a reasonable timeout for the gst_element_get_state call. If the call does time out (returns GST_STATE_CHANGE_FAILURE or GST_STATE_CHANGE_ASYNC) then you should check the message bus for errors. I use this little function for that:<br>
<br></div>// Returns true is any messages were found on the bus.<br><div>static gboolean message_check<br> ( App * app<br> )<br> { gboolean ret = FALSE;<br> GstBus * bus = gst_pipeline_get_bus(app->pipeline);<br>
GstMessage * msg = gst_bus_pop(bus);<br> <br> while(msg)<br> {<br> ret |= bus_message_handler(app,msg);<br> gst_message_unref(msg);<br> msg = gst_bus_pop(bus);<br> }<br> gst_object_unref(bus);<br>
return ret;<br> }<br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, May 7, 2013 at 9:30 AM, Mohammad-AL.Gmail <span dir="ltr"><<a href="mailto:al.mohamed.salim@gmail.com" target="_blank">al.mohamed.salim@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link="blue" vlink="purple" lang="EN-US"><div><p class="MsoNormal">In my GStreamer (0.10.32) based player, I switch pipeline to PAUSE and then switch state to NULL instead of READY after playback of a file is finished and then unref the pipeline.<u></u><u></u></p>
<p class="MsoNormal">However, I face a problem, when I play media files in a folder one after another:<u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">The playback of files goes OK one after another. <u></u><u></u></p>
<p class="MsoNormal">However once a while the GStreamer hangs when I turn the status of the pipeline to GST_STATE_PLAY.<u></u><u></u></p><p class="MsoNormal">Creation of playbin2, setting uri, and getting message bus goes OK. It hangs only when state is switch to READY.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">I am not able to make out which part / element blocks the pipeline. <u></u><u></u></p><p class="MsoNormal">Once this happen, the pipeline becomes non-responsive.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal">Regards,<u></u><u></u></p><p class="MsoNormal">Salim<u></u><u></u></p></div></div><br>_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Stirling Westrup<br>Programmer, Entrepreneur.<br><a href="https://www.linkedin.com/e/fpf/77228" target="_blank">https://www.linkedin.com/e/fpf/77228</a><br><a href="http://www.linkedin.com/in/swestrup" target="_blank">http://www.linkedin.com/in/swestrup</a><br>
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