Hi,
Found the issue - all is working when the media channel number is 2 (--stereo).
Rus
On Sat, 24 Feb 2018, pjsip@xxxxxxxx wrote:
>
> Greetings,
>
> In short:
>
> Expected: stereo_demo() plays wav file to left snd dev channel when file
> player connected to 0 slot (left) and plays to right snd dev channel when
> file connected to 1 slot (right).
>
> Observing: stereo_demo() plays wav file to both channels when file player
> connected to 0 slot (left) and silent when file player connected to 1
> slot (right).
>
> Long:
>
> I have Linux system with stereo sound card and mono SIP app with usual
> telephony 8000 rate. My goal is to make PJSIP open the sound card in
> stereo mode and create three mono conference ports:
>
> - mono port 0 able to play sound/call to both channels of sound card
> - mono port 1 able to play sound/call to left channel of sound card
> - mono port 2 able to play sound/call to right channel of sound card
>
> I've started with stock stereo_demo() present in pjsua_app.c adding the
> simple wav player at the end of the stereo_demo() to check the things :
>
> ...
> /* Connect the splitter to the sound device */
> status = pjmedia_snd_port_connect(app_config.snd, app_config.sc);
> pj_assert(status == PJ_SUCCESS);
>
> //
> // Custom code adds here:
> //
>
> // check channels with file player
> pjmedia_port *wav_file_media_port;
> status = pjmedia_wav_player_port_create(app_config.pool,
> "test.wav",
> 20, // ptime
> 0, // flags
> 0, // default buffer
> &wav_file_media_port); // returned port
> if (status != PJ_SUCCESS) {
> PJ_PERROR(1,(THIS_FILE, status, "pjmedia_wav_player_port_create"));
> return;
> }
> pjsua_conf_port_id wav_file_slot;
> status = pjsua_conf_add_port(app_config.pool, wav_file_media_port, &wav_file_slot);
> if (status != PJ_SUCCESS) {
> PJ_PERROR(1,(THIS_FILE, status, "pjsua_conf_add_port wav_file_media_port"));
> return;
> }
> PJ_LOG(2,(THIS_FILE, "registered file_slot:%d", wav_file_slot));
> pjsua_conf_connect(wav_file_slot, app_config.sc_ch1_slot); // or 0 for right ch
> ....
>
> File plays to both channels When connected to 0 slot but must play to left
> channel only. The system is silent when file player connected to app_config.sc_ch1_slot.
>
> What is the problem with stock code ? How to achieve this simple goal ?
>
> Thanks in advance
>
> Rus
>
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