SIP call with 3 streams

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On Mon, Aug 24, 2009 at 9:55 AM, Kresten Tolstrup<kt at danphone.com> wrote:
> Hello
>
> I have ask the question once before, but maybe it was not clear enough.
>
> We want to make one SIP call, from a PC, with 3 streams, one up stream and
> two downstreams. We use the soundcard in the PC. The up stream is from the
> microphone, and the downstreams are to the loudspeaker, one for the left
> channel, and one for the right channel.
>
> The questions are:
> Is this possible with the JPSIP stack?
>

Maybe. An audio stream is normally bidirectional, and I'm thinking you
could use just one (bidirectional) stereo stream for above. There is
--stereo option in pjsua, and combined with a stereo codec (at the
moment only L16 family of codecs that support stereo) I think you
could achieve that with the stock code.

> If it is possible, how do we then send the one stream to the left channel
> loudspeaker, and the other stream to the right channel loudspeaker?
>
>

See also STEREO_DEMO macro in pjsua application.

Cheers
 Benny

> Best Regards
> Kresten Tolstrup
>
>
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