I am devloping an server like application, which is in demand of handling large number of calls.
I have read the performance suggestion in FAQ, it provides a solution to improving performance by managing the media ourselves.
But I cant get de media through(no voice) as following the suggestion.
To be declared, in my case, sound device and microphone is disabled, I want to record
the up stream in buffer and put the down stream in buffer which will be played by pjsip periodicly.
so, at first I create a media conference with PJMEDIA_CONF_NO_DEVICE | PJMEDIA_CONF_NO_MIC option,
then, I create a recorder media port and a player media port, and attache them to master media port.
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void PhoneCallHandler::CallMediaInit(pjsua_call_id call_id)
{
pj_status_t status;
pj_pool_t *pool;
pool = pjsua_pool_create("mycall", 1000, 1000);
cd = PJ_POOL_ZALLOC_T(pool, struct call_data);
cd->pool = pool;
status = pjmedia_conf_create(pool,
128,
16000, //unsigned clock_rate,
1, //unsigned channel_count,
16, //unsigned samples_per_frame,
16, //unsigned bits_per_sample,
PJMEDIA_CONF_NO_DEVICE | PJMEDIA_CONF_NO_MIC,
&cd->conf);
//--- create player media port
status = pjmedia_mem_player_create(cd->pool,
player_buf_,
FRAME_SIZE,
16000, //unsigned clock_rate,
1, //unsigned channel_count,
16, //unsigned samples_per_frame,
16, //unsigned bits_per_sample,
0, //unsigned options,
&cd->dport);
status = pjmedia_mem_player_set_eof_cb(player_port, (void*)this, OnPlayerMediaEof);
//--- create recorder media port
status = pjmedia_mem_capture_create(cd->pool,
recorder_buf_,
FRAME_SIZE,
16000, //unsigned clock_rate,
1, //unsigned channel_count,
16, //unsigned samples_per_frame,
16, //unsigned bits_per_sample,
0, //unsigned options,
&cd->uport);
status = pjmedia_mem_capture_set_eof_cb(recorder_port, (void*)this, PhoneAccess::OnRecorderMediaEof);
status = pjmedia_master_port_create(pool, cd->uport, cd->dport, 0, &cd->m);
status = pjmedia_master_port_start(cd->m);
}
In callback of OnStreamCreated, I try to add the media port into media conference, but it failed obviously.
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int PhoneCallHandler::OnStreamCreated(pjmedia_stream *strm, unsigned stream_idx, pjmedia_port **p_port)
{
pj_status_t status;
pjmedia_conf_add_port(cd->conf, cd->pool, *p_port, NULL, &cd->conf_slot);
pjmedia_conf_add_port(cd->conf, cd->pool, cd->uport, NULL, &cd->up_slot);
pjmedia_conf_add_port(cd->conf, cd->pool, cd->dport, NULL, &cd->dn_slot);
status = pjmedia_conf_connect_port(cd->conf, cd->conf_slot, cd->up_slot, 0);
//status = pjmedia_conf_connect_port(cd->conf, cd->up_slot, cd->conf_slot, 0);
status = pjmedia_conf_connect_port(cd->conf, cd->dn_slot, cd->conf_slot, 0);
//status = pjmedia_conf_connect_port(cd->conf, cd->conf_slot, cd->dn_slot, 0);
return PJ_SUCCESS;
}
questions:
1) I cant understand "master media port" clearly, whether I must use the "master media port"?
2) master media port/memery media port/media port coming from OnStreamCreated para, what is the relationship of them?
3) How to connect these media port correctly?
Any help will be much appreciation.
ivgotcrazy at gmail.com
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