[gst-devel] issue on gstreamer control

rong wang rhong_wang at yahoo.com
Mon Nov 7 13:24:53 CET 2005

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

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

	osssink = gst_element_factory_make("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. 



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

> 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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