How to handle disconnecting the headphones?

Ralph ralph.gucwa at
Fri Dec 14 06:42:08 PST 2012

Does anyone have any idea how to solve this problem?

Ralph wrote
> I'm writing a C# WPF application using GStreamer 0.10.35 (OSSBuild-vs2010
> 2012.06.15 with .NET4 C# bindings).
> I'm using gnonlin and my pipeline contains two chains: one for audio and
> the other for video.
> On my machine when I disconnect the headphones while playing the pipeline,
> the playback pauses for a second and continues playing.  On another
> machine with a different sound card disconnecting the headphones causes
> the application to freeze.  Some *idiot* wrote sound card drivers in such
> a way that the audio device becomes disabled when the headphones are
> disconnected.
> When looking at GStreamer logs I can see the following warnings:
> 0:00:22.761000000  7120   0B3C2EF8 WARN            waveformsink
> gstwaveformsink.c:507:gst_waveform_sink_write:
> <autoaudiosink1-actual-sink-waveform>
>  gst_waveform_sink_write: Error preparing header => There is no driver
> installed on your system.
> 0:00:22.761000000  7120   0B3C2EF8 WARN            waveformsink
> gstwaveformsink.c:514:gst_waveform_sink_write:
> <autoaudiosink1-actual-sink-waveform>
>  gst_waveform_sink_write: Error writting buffer to the device => The wave
> header was not prepared.  Use the Prepare function to prepare the header,
> and then try again.
> What can I do in such situations?  How to make the pipeline continue
> playback even if the headphones are disconnected?

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