Gianluca Crucill? wrote:
>
> Hi all,
>
> I'm working on an application with PJMEDIA under uClinux on Nios2
> environment.
>
> I have a stream audio with codec L16 48000 stereo and mono.This works good.
>
> Now I must added Resampling and I saw that for make this I have 2 way:
> 1- Resample module add
> 2- Conference module add
>
> I read some documents and the two example (confsample.c and
> resampleplay.c) but I don't have clear this.
> I tried all two ways but they didn't work
>
> In attach there is my source code.
>
>
> In normal mode (without resampling) I make this:
>
> status = pjmedia_session_create( g_med_endpt, &sess_info,
> &g_med_transport, NULL, &g_med_session );
> if (status != PJ_SUCCESS) {
> app_perror( THIS_FILE, "Unable to create media session", status);
> return;
> }
>
> pjmedia_session_get_port(g_med_session, 0, &media_port);
>
> status = pjmedia_snd_port_create(
> inv->pool, // pool
> -1,
> -1,
> media_port->info.clock_rate, // clock
> rate
> media_port->info.channel_count, // channel
> count
> media_port->info.samples_per_frame, // samples per
> frame
> media_port->info.bits_per_sample, // bits per
> sample
> 0, // options
> &g_snd_player);
>
> if (status != PJ_SUCCESS) printf("\n=====>
> pjmedia_snd_port_create()....... [ KO ]\n");
>
>
> status = pjmedia_snd_port_connect(g_snd_player, media_port);
> if (status != PJ_SUCCESS) printf("\n=====>
> pjmedia_snd_port_connect()...... [ KO ]\n");
>
> Now I tried to make this
>
> status = pjmedia_session_create( g_med_endpt, &sess_info,
> &g_med_transport, NULL, &g_med_session );
> if (status != PJ_SUCCESS) {
> app_perror( THIS_FILE, "Unable to create media session", status);
> return;
> }
>
> pjmedia_session_get_port(g_med_session, 0, &media_port);
>
> status = pjmedia_conf_create( inv->pool, //
> pool
> 3, //
> max port count
> media_port->info.clock_rate, //
> clock rate
> media_port->info.channel_count, //
> channel count
> media_port-> info.samples_per_frame,
> // samples per frame
> media_port->info.bits_per_sample, //
> bits per sample
> 0, //
> option
> &conf
> );
> if (status != PJ_SUCCESS) {
> printf("\n=====> UNABLE TO CREATE CONFERENCE BRIDGE !!!\n");
> return 1;
> }
>
> status = pjmedia_conf_add_port(conf,inv->pool,media_port,NULL,NULL);
> if (status != PJ_SUCCESS) {
> printf("\n=====> UNABLE TO ADD CONFERENCE PORT !!!\n");
> return 1;
> }
>
> but this don't work..
>
> I tried with pjmedia_resample_port_create but this don't work..
>
>
> WHAT I MAKE WRONG?
Please do not shout on this list. ;-)
What seems to be missing is the part to connect the media session's
slot to the sound device slot, in the conference bridge. When a slot
is not connected to other slots, no media will be flowing to/from
that slot.
So in pjmedia_conf_add_port() above, you should fill up the last
argument to get the slot number of the media session. Something like:
unsigned slot;
pjmedia_conf_add_port(conf,inv->pool,media_port,NULL,&slot);
Then establish bidirectional media flow from/to the media session
to/from the sound device:
pjmedia_conf_connect_port(conf, 0, slot, 0);
pjmedia_conf_connect_port(conf, slot, 0, 0);
Note that I didn't check the syntax validity of your code (nor did I
check your complete source program ;-)). I assume you've taken care
of it from reading the documentation.
cheers,
-benny
> Can somebody help me?
>
> Thanks Gianluca
>
>
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--
Benny Prijono
http://www.pjsip.org
