[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
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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