[gst-devel] issue on gstreamer control

[rong wang]

Hi, Ronald
  Thanks, clear now.
  I had following piece of code (following your
advise)

  	GstElement *osssink;
    GstMixer *mixer;
    GList *channels, *item;
	gint volume[2];
    GstMixerTrack   *track;

	osssink = gst_element_factory_make("osssink",
"play_audio");
	ssert(osssink);
    mixer = GST_MIXER (osssink);
but it fails in the GST_MIXER part, the error message
is following:

(process:723): GStreamer-CRITICAL **:
gst_implements_interface_cast: assertion
`gst_element_implements_interface (GST_ELEMENT (from),
iface_type)' failed


Could you tell me what is wrong from your experience?
I knew that osssink elemented is loaded already. 

Thanks

Rong







--- "Ronald S. Bultje" <rbultje at ronald.bitfreak.net>
wrote:

> Hi Rong,
> 
> On Mon, 2005-11-07 at 10:38 -0800, rong wang wrote:
> > but I cannot see anywhere how
> > osssink is related to ossmixer.
> 
> GstOssSink derives from GstOssElement, which
> implements the interface.
> 
> Ronald
> 
> 



		
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