Panning audio output

[Federico Zamperini]

Il 15/04/2012 21:31, Stefan Sauer ha scritto:
 > On 04/10/2012 05:50 PM, Federico Zamperini wrote:
 >> Hi,
 >>      I have two audio pipelines (actually I have two playbin2, and I'd
 >> like to keep  them); I want to send one to the left audio channel and
 >> one to the right one.
 >> Does anyone know a way to accomplish this?
 >>
 >> FYI: I'm fiddling with audio-sink property of playbin2 and linking to
 >> a {audiopanorama + autoaudiosink} bin with no success.
 >
 > What is not working? gst-launch playbin2 uri=...
 > audio-sink="audiopanorama panorama=1.0 ! autoaudiosink" play the audio
 > fully right for me (and -1.0 fully left).
 >
 > Stefan

Yes, the gst-launch pipeline was working, but the pipeline in my code 
wasn't.
That's because I forgot to ghost the audiopanorama sink pad, and now 
it's working even in my code. For posterity's sake here's the code 
(error checking removed):

GstElement *autoaudiosink = gst_element_factory_make("autoaudiosink", 
"autoaudiosink");
	GstElement *audiopanorama = gst_element_factory_make("audiopanorama", 
"audiopanorama");

	GstElement *myaudiosink = gst_bin_new("myaudiosink");
	gst_bin_add_many(GST_BIN(myaudiosink), audiopanorama, autoaudiosink, NULL);
	gst_element_link(audiopanorama, autoaudiosink);

	/* add audiopanorama sink pad to custom bin */
	GstPad *pad = gst_element_get_static_pad(audiopanorama, "sink");
	gst_element_add_pad (myaudiosink, gst_ghost_pad_new ("sink", pad));
	gst_object_unref (GST_OBJECT (pad));
	
	GstElement *pipeline = gst_element_factory_make("playbin2", player->name);
	g_object_set(G_OBJECT(pipeline), "audio-sink", myaudiosink, NULL);

Thank you for your reply.
Cheers

Federico