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review.jami.net / pjproject / d1c9133de663391d7fcc427be1060fbab42ceeea / . / pjsip / src / pjsua-lib / pjsua_media.c
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/* $Id$ */
/*
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <pjsua-lib/pjsua.h>
#include <pjsua-lib/pjsua_internal.h>
#define THIS_FILE "pjsua_media.c"
#define DEFAULT_RTP_PORT 4000
#define NULL_SND_DEV_ID -99
#ifndef PJSUA_REQUIRE_CONSECUTIVE_RTCP_PORT
# define PJSUA_REQUIRE_CONSECUTIVE_RTCP_PORT 0
#endif
/* Next RTP port to be used */
static pj_uint16_t next_rtp_port;
/* Close existing sound device */
static void close_snd_dev(void);
static void pjsua_media_config_dup(pj_pool_t *pool,
pjsua_media_config *dst,
const pjsua_media_config *src)
{
pj_memcpy(dst, src, sizeof(*src));
pj_strdup(pool, &dst->turn_server, &src->turn_server);
pj_stun_auth_cred_dup(pool, &dst->turn_auth_cred, &src->turn_auth_cred);
}
/**
* Init media subsystems.
*/
pj_status_t pjsua_media_subsys_init(const pjsua_media_config *cfg)
{
pj_str_t codec_id = {NULL, 0};
unsigned opt;
pj_status_t status;
/* To suppress warning about unused var when all codecs are disabled */
PJ_UNUSED_ARG(codec_id);
/* Copy configuration */
pjsua_media_config_dup(pjsua_var.pool, &pjsua_var.media_cfg, cfg);
/* Normalize configuration */
if (pjsua_var.media_cfg.snd_clock_rate == 0) {
pjsua_var.media_cfg.snd_clock_rate = pjsua_var.media_cfg.clock_rate;
}
if (pjsua_var.media_cfg.has_ioqueue &&
pjsua_var.media_cfg.thread_cnt == 0)
{
pjsua_var.media_cfg.thread_cnt = 1;
}
if (pjsua_var.media_cfg.max_media_ports < pjsua_var.ua_cfg.max_calls) {
pjsua_var.media_cfg.max_media_ports = pjsua_var.ua_cfg.max_calls + 2;
}
/* Create media endpoint. */
status = pjmedia_endpt_create(&pjsua_var.cp.factory,
pjsua_var.media_cfg.has_ioqueue? NULL :
pjsip_endpt_get_ioqueue(pjsua_var.endpt),
pjsua_var.media_cfg.thread_cnt,
&pjsua_var.med_endpt);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE,
"Media stack initialization has returned error",
status);
return status;
}
/* Register all codecs */
#if PJMEDIA_HAS_SPEEX_CODEC
/* Register speex. */
status = pjmedia_codec_speex_init(pjsua_var.med_endpt,
0,
pjsua_var.media_cfg.quality,
-1);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing Speex codec",
status);
return status;
}
/* Set speex/16000 to higher priority*/
codec_id = pj_str("speex/16000");
pjmedia_codec_mgr_set_codec_priority(
pjmedia_endpt_get_codec_mgr(pjsua_var.med_endpt),
&codec_id, PJMEDIA_CODEC_PRIO_NORMAL+2);
/* Set speex/8000 to next higher priority*/
codec_id = pj_str("speex/8000");
pjmedia_codec_mgr_set_codec_priority(
pjmedia_endpt_get_codec_mgr(pjsua_var.med_endpt),
&codec_id, PJMEDIA_CODEC_PRIO_NORMAL+1);
#endif /* PJMEDIA_HAS_SPEEX_CODEC */
#if PJMEDIA_HAS_ILBC_CODEC
/* Register iLBC. */
status = pjmedia_codec_ilbc_init( pjsua_var.med_endpt,
pjsua_var.media_cfg.ilbc_mode);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing iLBC codec",
status);
return status;
}
#endif /* PJMEDIA_HAS_ILBC_CODEC */
#if PJMEDIA_HAS_GSM_CODEC
/* Register GSM */
status = pjmedia_codec_gsm_init(pjsua_var.med_endpt);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing GSM codec",
status);
return status;
}
#endif /* PJMEDIA_HAS_GSM_CODEC */
#if PJMEDIA_HAS_G711_CODEC
/* Register PCMA and PCMU */
status = pjmedia_codec_g711_init(pjsua_var.med_endpt);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing G711 codec",
status);
return status;
}
#endif /* PJMEDIA_HAS_G711_CODEC */
#if PJMEDIA_HAS_G722_CODEC
status = pjmedia_codec_g722_init( pjsua_var.med_endpt );
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing G722 codec",
status);
return status;
}
#endif /* PJMEDIA_HAS_G722_CODEC */
#if PJMEDIA_HAS_INTEL_IPP
/* Register IPP codecs */
status = pjmedia_codec_ipp_init(pjsua_var.med_endpt);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing IPP codecs",
status);
return status;
}
#endif /* PJMEDIA_HAS_INTEL_IPP */
#if PJMEDIA_HAS_L16_CODEC
/* Register L16 family codecs, but disable all */
status = pjmedia_codec_l16_init(pjsua_var.med_endpt, 0);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing L16 codecs",
status);
return status;
}
/* Disable ALL L16 codecs */
codec_id = pj_str("L16");
pjmedia_codec_mgr_set_codec_priority(
pjmedia_endpt_get_codec_mgr(pjsua_var.med_endpt),
&codec_id, PJMEDIA_CODEC_PRIO_DISABLED);
#endif /* PJMEDIA_HAS_L16_CODEC */
/* Save additional conference bridge parameters for future
* reference.
*/
pjsua_var.mconf_cfg.channel_count = pjsua_var.media_cfg.channel_count;
pjsua_var.mconf_cfg.bits_per_sample = 16;
pjsua_var.mconf_cfg.samples_per_frame = pjsua_var.media_cfg.clock_rate *
pjsua_var.mconf_cfg.channel_count *
pjsua_var.media_cfg.audio_frame_ptime /
1000;
/* Init options for conference bridge. */
opt = PJMEDIA_CONF_NO_DEVICE;
if (pjsua_var.media_cfg.quality >= 3 &&
pjsua_var.media_cfg.quality <= 4)
{
opt |= PJMEDIA_CONF_SMALL_FILTER;
}
else if (pjsua_var.media_cfg.quality < 3) {
opt |= PJMEDIA_CONF_USE_LINEAR;
}
/* Init conference bridge. */
status = pjmedia_conf_create(pjsua_var.pool,
pjsua_var.media_cfg.max_media_ports,
pjsua_var.media_cfg.clock_rate,
pjsua_var.mconf_cfg.channel_count,
pjsua_var.mconf_cfg.samples_per_frame,
pjsua_var.mconf_cfg.bits_per_sample,
opt, &pjsua_var.mconf);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error creating conference bridge",
status);
return status;
}
/* Create null port just in case user wants to use null sound. */
status = pjmedia_null_port_create(pjsua_var.pool,
pjsua_var.media_cfg.clock_rate,
pjsua_var.mconf_cfg.channel_count,
pjsua_var.mconf_cfg.samples_per_frame,
pjsua_var.mconf_cfg.bits_per_sample,
&pjsua_var.null_port);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
/* Perform NAT detection */
pjsua_detect_nat_type();
return PJ_SUCCESS;
}
/*
* Create RTP and RTCP socket pair, and possibly resolve their public
* address via STUN.
*/
static pj_status_t create_rtp_rtcp_sock(const pjsua_transport_config *cfg,
pjmedia_sock_info *skinfo)
{
enum {
RTP_RETRY = 100
};
int i;
pj_sockaddr_in bound_addr;
pj_sockaddr_in mapped_addr[2];
pj_status_t status = PJ_SUCCESS;
char addr_buf[PJ_INET6_ADDRSTRLEN+2];
pj_sock_t sock[2];
/* Make sure STUN server resolution has completed */
status = pjsua_resolve_stun_server(PJ_TRUE);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error resolving STUN server", status);
return status;
}
if (next_rtp_port == 0)
next_rtp_port = (pj_uint16_t)cfg->port;
for (i=0; i<2; ++i)
sock[i] = PJ_INVALID_SOCKET;
bound_addr.sin_addr.s_addr = PJ_INADDR_ANY;
if (cfg->bound_addr.slen) {
status = pj_sockaddr_in_set_str_addr(&bound_addr, &cfg->bound_addr);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to resolve transport bind address",
status);
return status;
}
}
/* Loop retry to bind RTP and RTCP sockets. */
for (i=0; i<RTP_RETRY; ++i, next_rtp_port += 2) {
/* Create and bind RTP socket. */
status = pj_sock_socket(pj_AF_INET(), pj_SOCK_DGRAM(), 0, &sock[0]);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "socket() error", status);
return status;
}
status=pj_sock_bind_in(sock[0], pj_ntohl(bound_addr.sin_addr.s_addr),
next_rtp_port);
if (status != PJ_SUCCESS) {
pj_sock_close(sock[0]);
sock[0] = PJ_INVALID_SOCKET;
continue;
}
/* Create and bind RTCP socket. */
status = pj_sock_socket(pj_AF_INET(), pj_SOCK_DGRAM(), 0, &sock[1]);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "socket() error", status);
pj_sock_close(sock[0]);
return status;
}
status=pj_sock_bind_in(sock[1], pj_ntohl(bound_addr.sin_addr.s_addr),
(pj_uint16_t)(next_rtp_port+1));
if (status != PJ_SUCCESS) {
pj_sock_close(sock[0]);
sock[0] = PJ_INVALID_SOCKET;
pj_sock_close(sock[1]);
sock[1] = PJ_INVALID_SOCKET;
continue;
}
/*
* If we're configured to use STUN, then find out the mapped address,
* and make sure that the mapped RTCP port is adjacent with the RTP.
*/
if (pjsua_var.stun_srv.addr.sa_family != 0) {
char ip_addr[32];
pj_str_t stun_srv;
pj_ansi_strcpy(ip_addr,
pj_inet_ntoa(pjsua_var.stun_srv.ipv4.sin_addr));
stun_srv = pj_str(ip_addr);
status=pjstun_get_mapped_addr(&pjsua_var.cp.factory, 2, sock,
&stun_srv, pj_ntohs(pjsua_var.stun_srv.ipv4.sin_port),
&stun_srv, pj_ntohs(pjsua_var.stun_srv.ipv4.sin_port),
mapped_addr);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "STUN resolve error", status);
goto on_error;
}
#if PJSUA_REQUIRE_CONSECUTIVE_RTCP_PORT
if (pj_ntohs(mapped_addr[1].sin_port) ==
pj_ntohs(mapped_addr[0].sin_port)+1)
{
/* Success! */
break;
}
pj_sock_close(sock[0]);
sock[0] = PJ_INVALID_SOCKET;
pj_sock_close(sock[1]);
sock[1] = PJ_INVALID_SOCKET;
#else
if (pj_ntohs(mapped_addr[1].sin_port) !=
pj_ntohs(mapped_addr[0].sin_port)+1)
{
PJ_LOG(4,(THIS_FILE,
"Note: STUN mapped RTCP port %d is not adjacent"
" to RTP port %d",
pj_ntohs(mapped_addr[1].sin_port),
pj_ntohs(mapped_addr[0].sin_port)));
}
/* Success! */
break;
#endif
} else if (cfg->public_addr.slen) {
status = pj_sockaddr_in_init(&mapped_addr[0], &cfg->public_addr,
(pj_uint16_t)next_rtp_port);
if (status != PJ_SUCCESS)
goto on_error;
status = pj_sockaddr_in_init(&mapped_addr[1], &cfg->public_addr,
(pj_uint16_t)(next_rtp_port+1));
if (status != PJ_SUCCESS)
goto on_error;
break;
} else {
if (bound_addr.sin_addr.s_addr == 0) {
pj_sockaddr addr;
/* Get local IP address. */
status = pj_gethostip(pj_AF_INET(), &addr);
if (status != PJ_SUCCESS)
goto on_error;
bound_addr.sin_addr.s_addr = addr.ipv4.sin_addr.s_addr;
}
for (i=0; i<2; ++i) {
pj_sockaddr_in_init(&mapped_addr[i], NULL, 0);
mapped_addr[i].sin_addr.s_addr = bound_addr.sin_addr.s_addr;
}
mapped_addr[0].sin_port=pj_htons((pj_uint16_t)next_rtp_port);
mapped_addr[1].sin_port=pj_htons((pj_uint16_t)(next_rtp_port+1));
break;
}
}
if (sock[0] == PJ_INVALID_SOCKET) {
PJ_LOG(1,(THIS_FILE,
"Unable to find appropriate RTP/RTCP ports combination"));
goto on_error;
}
skinfo->rtp_sock = sock[0];
pj_memcpy(&skinfo->rtp_addr_name,
&mapped_addr[0], sizeof(pj_sockaddr_in));
skinfo->rtcp_sock = sock[1];
pj_memcpy(&skinfo->rtcp_addr_name,
&mapped_addr[1], sizeof(pj_sockaddr_in));
PJ_LOG(4,(THIS_FILE, "RTP socket reachable at %s",
pj_sockaddr_print(&skinfo->rtp_addr_name, addr_buf,
sizeof(addr_buf), 3)));
PJ_LOG(4,(THIS_FILE, "RTCP socket reachable at %s",
pj_sockaddr_print(&skinfo->rtcp_addr_name, addr_buf,
sizeof(addr_buf), 3)));
next_rtp_port += 2;
return PJ_SUCCESS;
on_error:
for (i=0; i<2; ++i) {
if (sock[i] != PJ_INVALID_SOCKET)
pj_sock_close(sock[i]);
}
return status;
}
/* Check if sound device is idle. */
static void check_snd_dev_idle()
{
/* Activate sound device auto-close timer if sound device is idle.
* It is idle when there is no port connection in the bridge.
*/
if ((pjsua_var.snd_port!=NULL || pjsua_var.null_snd!=NULL) &&
pjsua_var.snd_idle_timer.id == PJ_FALSE &&
pjmedia_conf_get_connect_count(pjsua_var.mconf) == 0 &&
pjsua_var.media_cfg.snd_auto_close_time >= 0)
{
pj_time_val delay;
delay.msec = 0;
delay.sec = pjsua_var.media_cfg.snd_auto_close_time;
pjsua_var.snd_idle_timer.id = PJ_TRUE;
pjsip_endpt_schedule_timer(pjsua_var.endpt, &pjsua_var.snd_idle_timer,
&delay);
}
}
/* Timer callback to close sound device */
static void close_snd_timer_cb( pj_timer_heap_t *th,
pj_timer_entry *entry)
{
PJ_UNUSED_ARG(th);
PJ_LOG(4,(THIS_FILE,"Closing sound device after idle for %d seconds",
pjsua_var.media_cfg.snd_auto_close_time));
entry->id = PJ_FALSE;
close_snd_dev();
}
/*
* Start pjsua media subsystem.
*/
pj_status_t pjsua_media_subsys_start(void)
{
pj_status_t status;
/* Create media for calls, if none is specified */
if (pjsua_var.calls[0].med_tp == NULL) {
pjsua_transport_config transport_cfg;
/* Create default transport config */
pjsua_transport_config_default(&transport_cfg);
transport_cfg.port = DEFAULT_RTP_PORT;
status = pjsua_media_transports_create(&transport_cfg);
if (status != PJ_SUCCESS)
return status;
}
pj_timer_entry_init(&pjsua_var.snd_idle_timer, PJ_FALSE, NULL,
&close_snd_timer_cb);
return PJ_SUCCESS;
}
/*
* Destroy pjsua media subsystem.
*/
pj_status_t pjsua_media_subsys_destroy(void)
{
unsigned i;
close_snd_dev();
if (pjsua_var.mconf) {
pjmedia_conf_destroy(pjsua_var.mconf);
pjsua_var.mconf = NULL;
}
if (pjsua_var.null_port) {
pjmedia_port_destroy(pjsua_var.null_port);
pjsua_var.null_port = NULL;
}
/* Destroy file players */
for (i=0; i<PJ_ARRAY_SIZE(pjsua_var.player); ++i) {
if (pjsua_var.player[i].port) {
pjmedia_port_destroy(pjsua_var.player[i].port);
pjsua_var.player[i].port = NULL;
}
}
/* Destroy file recorders */
for (i=0; i<PJ_ARRAY_SIZE(pjsua_var.recorder); ++i) {
if (pjsua_var.recorder[i].port) {
pjmedia_port_destroy(pjsua_var.recorder[i].port);
pjsua_var.recorder[i].port = NULL;
}
}
/* Close media transports */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
if (pjsua_var.calls[i].med_tp_st != PJSUA_MED_TP_IDLE) {
pjsua_media_channel_deinit(i);
}
if (pjsua_var.calls[i].med_tp) {
(*pjsua_var.calls[i].med_tp->op->destroy)(pjsua_var.calls[i].med_tp);
pjsua_var.calls[i].med_tp = NULL;
}
}
/* Destroy media endpoint. */
if (pjsua_var.med_endpt) {
/* Shutdown all codecs: */
# if PJMEDIA_HAS_SPEEX_CODEC
pjmedia_codec_speex_deinit();
# endif /* PJMEDIA_HAS_SPEEX_CODEC */
# if PJMEDIA_HAS_GSM_CODEC
pjmedia_codec_gsm_deinit();
# endif /* PJMEDIA_HAS_GSM_CODEC */
# if PJMEDIA_HAS_G711_CODEC
pjmedia_codec_g711_deinit();
# endif /* PJMEDIA_HAS_G711_CODEC */
# if PJMEDIA_HAS_G722_CODEC
pjmedia_codec_g722_deinit();
# endif /* PJMEDIA_HAS_G722_CODEC */
# if PJMEDIA_HAS_INTEL_IPP
pjmedia_codec_ipp_deinit();
# endif /* PJMEDIA_HAS_INTEL_IPP */
# if PJMEDIA_HAS_L16_CODEC
pjmedia_codec_l16_deinit();
# endif /* PJMEDIA_HAS_L16_CODEC */
pjmedia_endpt_destroy(pjsua_var.med_endpt);
pjsua_var.med_endpt = NULL;
/* Deinitialize sound subsystem */
// Not necessary, as pjmedia_snd_deinit() should have been called
// in pjmedia_endpt_destroy().
//pjmedia_snd_deinit();
}
/* Reset RTP port */
next_rtp_port = 0;
return PJ_SUCCESS;
}
/* Create normal UDP media transports */
static pj_status_t create_udp_media_transports(pjsua_transport_config *cfg)
{
unsigned i;
pjmedia_sock_info skinfo;
pj_status_t status;
/* Create each media transport */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
status = create_rtp_rtcp_sock(cfg, &skinfo);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to create RTP/RTCP socket",
status);
goto on_error;
}
status = pjmedia_transport_udp_attach(pjsua_var.med_endpt, NULL,
&skinfo, 0,
&pjsua_var.calls[i].med_tp);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to create media transport",
status);
goto on_error;
}
pjmedia_transport_simulate_lost(pjsua_var.calls[i].med_tp,
PJMEDIA_DIR_ENCODING,
pjsua_var.media_cfg.tx_drop_pct);
pjmedia_transport_simulate_lost(pjsua_var.calls[i].med_tp,
PJMEDIA_DIR_DECODING,
pjsua_var.media_cfg.rx_drop_pct);
}
return PJ_SUCCESS;
on_error:
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
if (pjsua_var.calls[i].med_tp != NULL) {
pjmedia_transport_close(pjsua_var.calls[i].med_tp);
pjsua_var.calls[i].med_tp = NULL;
}
}
return status;
}
/* This callback is called when ICE negotiation completes */
static void on_ice_complete(pjmedia_transport *tp,
pj_ice_strans_op op,
pj_status_t result)
{
unsigned id;
pj_bool_t found = PJ_FALSE;
/* Find call which has this media transport */
PJSUA_LOCK();
for (id=0; id<pjsua_var.ua_cfg.max_calls; ++id) {
if (pjsua_var.calls[id].med_tp == tp ||
pjsua_var.calls[id].med_orig == tp)
{
found = PJ_TRUE;
break;
}
}
PJSUA_UNLOCK();
if (!found)
return;
switch (op) {
case PJ_ICE_STRANS_OP_INIT:
pjsua_var.calls[id].med_tp_ready = result;
break;
case PJ_ICE_STRANS_OP_NEGOTIATION:
if (result != PJ_SUCCESS) {
pjsua_var.calls[id].media_st = PJSUA_CALL_MEDIA_ERROR;
pjsua_var.calls[id].media_dir = PJMEDIA_DIR_NONE;
if (pjsua_var.ua_cfg.cb.on_call_media_state) {
pjsua_var.ua_cfg.cb.on_call_media_state(id);
}
}
break;
}
}
/* Parse "HOST:PORT" format */
static pj_status_t parse_host_port(const pj_str_t *host_port,
pj_str_t *host, pj_uint16_t *port)
{
pj_str_t str_port;
str_port.ptr = pj_strchr(host_port, ':');
if (str_port.ptr != NULL) {
int iport;
host->ptr = host_port->ptr;
host->slen = (str_port.ptr - host->ptr);
str_port.ptr++;
str_port.slen = host_port->slen - host->slen - 1;
iport = (int)pj_strtoul(&str_port);
if (iport < 1 || iport > 65535)
return PJ_EINVAL;
*port = (pj_uint16_t)iport;
} else {
*host = *host_port;
*port = 0;
}
return PJ_SUCCESS;
}
/* Create ICE media transports (when ice is enabled) */
static pj_status_t create_ice_media_transports(void)
{
char stunip[PJ_INET6_ADDRSTRLEN];
pj_ice_strans_cfg ice_cfg;
unsigned i;
pj_status_t status;
/* Make sure STUN server resolution has completed */
status = pjsua_resolve_stun_server(PJ_TRUE);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error resolving STUN server", status);
return status;
}
/* Create ICE stream transport configuration */
pj_ice_strans_cfg_default(&ice_cfg);
pj_stun_config_init(&ice_cfg.stun_cfg, &pjsua_var.cp.factory, 0,
pjsip_endpt_get_ioqueue(pjsua_var.endpt),
pjsip_endpt_get_timer_heap(pjsua_var.endpt));
ice_cfg.af = pj_AF_INET();
ice_cfg.resolver = pjsua_var.resolver;
/* Configure STUN settings */
if (pj_sockaddr_has_addr(&pjsua_var.stun_srv)) {
pj_sockaddr_print(&pjsua_var.stun_srv, stunip, sizeof(stunip), 0);
ice_cfg.stun.server = pj_str(stunip);
ice_cfg.stun.port = pj_sockaddr_get_port(&pjsua_var.stun_srv);
}
ice_cfg.stun.no_host_cands = pjsua_var.media_cfg.ice_no_host_cands;
/* Configure TURN settings */
if (pjsua_var.media_cfg.enable_turn) {
status = parse_host_port(&pjsua_var.media_cfg.turn_server,
&ice_cfg.turn.server,
&ice_cfg.turn.port);
if (status != PJ_SUCCESS || ice_cfg.turn.server.slen == 0) {
PJ_LOG(1,(THIS_FILE, "Invalid TURN server setting"));
return PJ_EINVAL;
}
if (ice_cfg.turn.port == 0)
ice_cfg.turn.port = 3479;
ice_cfg.turn.conn_type = pjsua_var.media_cfg.turn_conn_type;
pj_memcpy(&ice_cfg.turn.auth_cred,
&pjsua_var.media_cfg.turn_auth_cred,
sizeof(ice_cfg.turn.auth_cred));
}
/* Create each media transport */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
pjmedia_ice_cb ice_cb;
char name[32];
unsigned comp_cnt;
pj_bzero(&ice_cb, sizeof(pjmedia_ice_cb));
ice_cb.on_ice_complete = &on_ice_complete;
pj_ansi_snprintf(name, sizeof(name), "icetp%02d", i);
pjsua_var.calls[i].med_tp_ready = PJ_EPENDING;
comp_cnt = 1;
if (PJMEDIA_ADVERTISE_RTCP && !pjsua_var.media_cfg.ice_no_rtcp)
++comp_cnt;
status = pjmedia_ice_create(pjsua_var.med_endpt, name, comp_cnt,
&ice_cfg, &ice_cb,
&pjsua_var.calls[i].med_tp);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to create ICE media transport",
status);
goto on_error;
}
/* Wait until transport is initialized, or time out */
PJSUA_UNLOCK();
while (pjsua_var.calls[i].med_tp_ready == PJ_EPENDING) {
pjsua_handle_events(100);
}
PJSUA_LOCK();
if (pjsua_var.calls[i].med_tp_ready != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing ICE media transport",
pjsua_var.calls[i].med_tp_ready);
status = pjsua_var.calls[i].med_tp_ready;
goto on_error;
}
pjmedia_transport_simulate_lost(pjsua_var.calls[i].med_tp,
PJMEDIA_DIR_ENCODING,
pjsua_var.media_cfg.tx_drop_pct);
pjmedia_transport_simulate_lost(pjsua_var.calls[i].med_tp,
PJMEDIA_DIR_DECODING,
pjsua_var.media_cfg.rx_drop_pct);
}
return PJ_SUCCESS;
on_error:
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
if (pjsua_var.calls[i].med_tp != NULL) {
pjmedia_transport_close(pjsua_var.calls[i].med_tp);
pjsua_var.calls[i].med_tp = NULL;
}
}
return status;
}
/*
* Create UDP media transports for all the calls. This function creates
* one UDP media transport for each call.
*/
PJ_DEF(pj_status_t) pjsua_media_transports_create(
const pjsua_transport_config *app_cfg)
{
pjsua_transport_config cfg;
unsigned i;
pj_status_t status;
/* Make sure pjsua_init() has been called */
PJ_ASSERT_RETURN(pjsua_var.ua_cfg.max_calls>0, PJ_EINVALIDOP);
PJSUA_LOCK();
/* Delete existing media transports */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
if (pjsua_var.calls[i].med_tp != NULL) {
pjmedia_transport_close(pjsua_var.calls[i].med_tp);
pjsua_var.calls[i].med_tp = NULL;
}
}
/* Copy config */
pjsua_transport_config_dup(pjsua_var.pool, &cfg, app_cfg);
if (pjsua_var.media_cfg.enable_ice) {
status = create_ice_media_transports();
} else {
status = create_udp_media_transports(&cfg);
}
PJSUA_UNLOCK();
return status;
}
pj_status_t pjsua_media_channel_init(pjsua_call_id call_id,
pjsip_role_e role,
int security_level,
pj_pool_t *tmp_pool,
const pjmedia_sdp_session *rem_sdp,
int *sip_err_code)
{
pjsua_call *call = &pjsua_var.calls[call_id];
pj_status_t status;
#if defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0)
pjsua_acc *acc = &pjsua_var.acc[call->acc_id];
pjmedia_srtp_setting srtp_opt;
pjmedia_transport *srtp = NULL;
#endif
PJ_UNUSED_ARG(role);
/* Return error if media transport has not been created yet
* (e.g. application is starting)
*/
if (call->med_tp == NULL) {
return PJ_EBUSY;
}
#if defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0)
/* This function may be called when SRTP transport already exists
* (e.g: in re-invite, update), don't need to destroy/re-create.
*/
if (!call->med_orig || call->med_tp == call->med_orig) {
/* Check if SRTP requires secure signaling */
if (acc->cfg.use_srtp != PJMEDIA_SRTP_DISABLED) {
if (security_level < acc->cfg.srtp_secure_signaling) {
if (sip_err_code)
*sip_err_code = PJSIP_SC_NOT_ACCEPTABLE;
return PJSIP_ESESSIONINSECURE;
}
}
/* Always create SRTP adapter */
pjmedia_srtp_setting_default(&srtp_opt);
srtp_opt.close_member_tp = PJ_FALSE;
/* If media session has been ever established, let's use remote's
* preference in SRTP usage policy, especially when it is stricter.
*/
if (call->rem_srtp_use > acc->cfg.use_srtp)
srtp_opt.use = call->rem_srtp_use;
else
srtp_opt.use = acc->cfg.use_srtp;
status = pjmedia_transport_srtp_create(pjsua_var.med_endpt,
call->med_tp,
&srtp_opt, &srtp);
if (status != PJ_SUCCESS) {
if (sip_err_code)
*sip_err_code = PJSIP_SC_INTERNAL_SERVER_ERROR;
return status;
}
/* Set SRTP as current media transport */
call->med_orig = call->med_tp;
call->med_tp = srtp;
}
#else
call->med_orig = call->med_tp;
PJ_UNUSED_ARG(security_level);
#endif
/* Find out which media line in SDP that we support. If we are offerer,
* audio will be at index 0 in SDP.
*/
if (rem_sdp == 0) {
call->audio_idx = 0;
}
/* Otherwise find out the candidate audio media line in SDP */
else {
unsigned i;
pj_bool_t srtp_active;
#if defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0)
srtp_active = acc->cfg.use_srtp && srtp != NULL;
#else
srtp_active = PJ_FALSE;
#endif
/* Media count must have been checked */
pj_assert(rem_sdp->media_count != 0);
for (i=0; i<rem_sdp->media_count; ++i) {
const pjmedia_sdp_media *m = rem_sdp->media[i];
/* Skip if media is not audio */
if (pj_stricmp2(&m->desc.media, "audio") != 0)
continue;
/* Skip if media is disabled */
if (m->desc.port == 0)
continue;
/* Skip if transport is not supported */
if (pj_stricmp2(&m->desc.transport, "RTP/AVP") != 0 &&
pj_stricmp2(&m->desc.transport, "RTP/SAVP") != 0)
{
continue;
}
if (call->audio_idx == -1) {
call->audio_idx = i;
} else {
/* We've found multiple candidates. This could happen
* e.g. when remote is offering both RTP/AVP and RTP/AVP,
* or when remote for some reason offers two audio.
*/
if (srtp_active &&
pj_stricmp2(&m->desc.transport, "RTP/SAVP")==0)
{
/* Prefer RTP/SAVP when our media transport is SRTP */
call->audio_idx = i;
} else if (!srtp_active &&
pj_stricmp2(&m->desc.transport, "RTP/AVP")==0)
{
/* Prefer RTP/AVP when our media transport is NOT SRTP */
call->audio_idx = i;
}
}
}
}
/* Reject offer if we couldn't find a good m=audio line in offer */
if (call->audio_idx < 0) {
if (sip_err_code) *sip_err_code = PJSIP_SC_NOT_ACCEPTABLE_HERE;
pjsua_media_channel_deinit(call_id);
return PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_NOT_ACCEPTABLE_HERE);
}
PJ_LOG(4,(THIS_FILE, "Media index %d selected for call %d",
call->audio_idx, call->index));
/* Create the media transport */
status = pjmedia_transport_media_create(call->med_tp, tmp_pool, 0,
rem_sdp, call->audio_idx);
if (status != PJ_SUCCESS) {
if (sip_err_code) *sip_err_code = PJSIP_SC_NOT_ACCEPTABLE;
pjsua_media_channel_deinit(call_id);
return status;
}
call->med_tp_st = PJSUA_MED_TP_INIT;
return PJ_SUCCESS;
}
pj_status_t pjsua_media_channel_create_sdp(pjsua_call_id call_id,
pj_pool_t *pool,
const pjmedia_sdp_session *rem_sdp,
pjmedia_sdp_session **p_sdp,
int *sip_status_code)
{
enum { MAX_MEDIA = 1 };
pjmedia_sdp_session *sdp;
pjmedia_transport_info tpinfo;
pjsua_call *call = &pjsua_var.calls[call_id];
pj_status_t status;
/* Return error if media transport has not been created yet
* (e.g. application is starting)
*/
if (call->med_tp == NULL) {
return PJ_EBUSY;
}
/* Media index must have been determined before */
pj_assert(call->audio_idx != -1);
/* Create media if it's not created. This could happen when call is
* currently on-hold
*/
if (call->med_tp_st == PJSUA_MED_TP_IDLE) {
pjsip_role_e role;
role = (rem_sdp ? PJSIP_ROLE_UAS : PJSIP_ROLE_UAC);
status = pjsua_media_channel_init(call_id, role, call->secure_level,
pool, rem_sdp, sip_status_code);
if (status != PJ_SUCCESS)
return status;
}
/* Get media socket info */
pjmedia_transport_info_init(&tpinfo);
pjmedia_transport_get_info(call->med_tp, &tpinfo);
/* Create SDP */
status = pjmedia_endpt_create_sdp(pjsua_var.med_endpt, pool, MAX_MEDIA,
&tpinfo.sock_info, &sdp);
if (status != PJ_SUCCESS) {
if (sip_status_code) *sip_status_code = 500;
return status;
}
/* If we're answering and the selected media is not the first media
* in SDP, then fill in the unselected media with with zero port.
* Otherwise we'll crash in transport_encode_sdp() because the media
* lines are not aligned between offer and answer.
*/
if (rem_sdp && call->audio_idx != 0) {
unsigned i;
for (i=0; i<rem_sdp->media_count; ++i) {
const pjmedia_sdp_media *rem_m = rem_sdp->media[i];
pjmedia_sdp_media *m;
const pjmedia_sdp_attr *a;
if ((int)i == call->audio_idx)
continue;
m = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_media);
pj_strdup(pool, &m->desc.media, &rem_m->desc.media);
pj_strdup(pool, &m->desc.transport, &rem_m->desc.transport);
m->desc.port = 0;
/* Add one format, copy from the offer. And copy the corresponding
* rtpmap and fmtp attributes too.
*/
m->desc.fmt_count = 1;
pj_strdup(pool, &m->desc.fmt[0], &rem_m->desc.fmt[0]);
if ((a=pjmedia_sdp_attr_find2(rem_m->attr_count, rem_m->attr,
"rtpmap", &m->desc.fmt[0])) != NULL)
{
m->attr[m->attr_count++] = pjmedia_sdp_attr_clone(pool, a);
}
if ((a=pjmedia_sdp_attr_find2(rem_m->attr_count, rem_m->attr,
"fmtp", &m->desc.fmt[0])) != NULL)
{
m->attr[m->attr_count++] = pjmedia_sdp_attr_clone(pool, a);
}
if (i==sdp->media_count)
sdp->media[sdp->media_count++] = m;
else {
pj_array_insert(sdp->media, sizeof(sdp->media[0]),
sdp->media_count, i, &m);
++sdp->media_count;
}
}
}
/* Add NAT info in the SDP */
if (pjsua_var.ua_cfg.nat_type_in_sdp) {
pjmedia_sdp_attr *a;
pj_str_t value;
char nat_info[80];
value.ptr = nat_info;
if (pjsua_var.ua_cfg.nat_type_in_sdp == 1) {
value.slen = pj_ansi_snprintf(nat_info, sizeof(nat_info),
"%d", pjsua_var.nat_type);
} else {
const char *type_name = pj_stun_get_nat_name(pjsua_var.nat_type);
value.slen = pj_ansi_snprintf(nat_info, sizeof(nat_info),
"%d %s",
pjsua_var.nat_type,
type_name);
}
a = pjmedia_sdp_attr_create(pool, "X-nat", &value);
pjmedia_sdp_attr_add(&sdp->attr_count, sdp->attr, a);
}
/* Give the SDP to media transport */
status = pjmedia_transport_encode_sdp(call->med_tp, pool, sdp, rem_sdp,
call->audio_idx);
if (status != PJ_SUCCESS) {
if (sip_status_code) *sip_status_code = PJSIP_SC_NOT_ACCEPTABLE;
return status;
}
*p_sdp = sdp;
return PJ_SUCCESS;
}
static void stop_media_session(pjsua_call_id call_id)
{
pjsua_call *call = &pjsua_var.calls[call_id];
if (call->conf_slot != PJSUA_INVALID_ID) {
if (pjsua_var.mconf) {
pjsua_conf_remove_port(call->conf_slot);
}
call->conf_slot = PJSUA_INVALID_ID;
}
if (call->session) {
pjmedia_rtcp_stat stat;
if (pjmedia_session_get_stream_stat(call->session, 0, &stat)
== PJ_SUCCESS)
{
/* Save RTP timestamp & sequence, so when media session is
* restarted, those values will be restored as the initial
* RTP timestamp & sequence of the new media session. So in
* the same call session, RTP timestamp and sequence are
* guaranteed to be contigue.
*/
call->rtp_tx_seq_ts_set = 1 | (1 << 1);
call->rtp_tx_seq = stat.rtp_tx_last_seq;
call->rtp_tx_ts = stat.rtp_tx_last_ts;
}
if (pjsua_var.ua_cfg.cb.on_stream_destroyed) {
pjsua_var.ua_cfg.cb.on_stream_destroyed(call_id, call->session, 0);
}
pjmedia_session_destroy(call->session);
call->session = NULL;
PJ_LOG(4,(THIS_FILE, "Media session for call %d is destroyed",
call_id));
}
call->media_st = PJSUA_CALL_MEDIA_NONE;
}
pj_status_t pjsua_media_channel_deinit(pjsua_call_id call_id)
{
pjsua_call *call = &pjsua_var.calls[call_id];
stop_media_session(call_id);
if (call->med_tp_st != PJSUA_MED_TP_IDLE) {
pjmedia_transport_media_stop(call->med_tp);
call->med_tp_st = PJSUA_MED_TP_IDLE;
}
if (call->med_orig && call->med_tp && call->med_tp != call->med_orig) {
pjmedia_transport_close(call->med_tp);
call->med_tp = call->med_orig;
}
return PJ_SUCCESS;
}
/*
* DTMF callback from the stream.
*/
static void dtmf_callback(pjmedia_stream *strm, void *user_data,
int digit)
{
PJ_UNUSED_ARG(strm);
/* For discussions about call mutex protection related to this
* callback, please see ticket #460:
* http://trac.pjsip.org/repos/ticket/460#comment:4
*/
if (pjsua_var.ua_cfg.cb.on_dtmf_digit) {
pjsua_call_id call_id;
call_id = (pjsua_call_id)(long)user_data;
pjsua_var.ua_cfg.cb.on_dtmf_digit(call_id, digit);
}
}
pj_status_t pjsua_media_channel_update(pjsua_call_id call_id,
const pjmedia_sdp_session *local_sdp,
const pjmedia_sdp_session *remote_sdp)
{
int prev_media_st = 0;
pjsua_call *call = &pjsua_var.calls[call_id];
pjmedia_session_info sess_info;
pjmedia_stream_info *si = NULL;
pjmedia_port *media_port;
pj_status_t status;
/* Destroy existing media session, if any. */
prev_media_st = call->media_st;
stop_media_session(call->index);
/* Create media session info based on SDP parameters.
*/
status = pjmedia_session_info_from_sdp( call->inv->dlg->pool,
pjsua_var.med_endpt,
PJMEDIA_MAX_SDP_MEDIA, &sess_info,
local_sdp, remote_sdp);
if (status != PJ_SUCCESS)
return status;
/* Find which session is audio */
PJ_ASSERT_RETURN(call->audio_idx != -1, PJ_EBUG);
PJ_ASSERT_RETURN(call->audio_idx < (int)sess_info.stream_cnt, PJ_EBUG);
si = &sess_info.stream_info[call->audio_idx];
/* Reset session info with only one media stream */
sess_info.stream_cnt = 1;
if (si != &sess_info.stream_info[0])
pj_memcpy(&sess_info.stream_info[0], si, sizeof(pjmedia_stream_info));
/* Check if no media is active */
if (sess_info.stream_cnt == 0 || si->dir == PJMEDIA_DIR_NONE)
{
/* Call media state */
call->media_st = PJSUA_CALL_MEDIA_NONE;
/* Call media direction */
call->media_dir = PJMEDIA_DIR_NONE;
/* Shutdown transport's session */
pjmedia_transport_media_stop(call->med_tp);
call->med_tp_st = PJSUA_MED_TP_IDLE;
/* No need because we need keepalive? */
/* Close upper entry of transport stack */
if (call->med_orig && (call->med_tp != call->med_orig)) {
pjmedia_transport_close(call->med_tp);
call->med_tp = call->med_orig;
}
} else {
pjmedia_transport_info tp_info;
/* Start/restart media transport */
status = pjmedia_transport_media_start(call->med_tp,
call->inv->pool,
local_sdp, remote_sdp, 0);
if (status != PJ_SUCCESS)
return status;
call->med_tp_st = PJSUA_MED_TP_RUNNING;
/* Get remote SRTP usage policy */
pjmedia_transport_info_init(&tp_info);
pjmedia_transport_get_info(call->med_tp, &tp_info);
if (tp_info.specific_info_cnt > 0) {
int i;
for (i = 0; i < tp_info.specific_info_cnt; ++i) {
if (tp_info.spc_info[i].type == PJMEDIA_TRANSPORT_TYPE_SRTP)
{
pjmedia_srtp_info *srtp_info =
(pjmedia_srtp_info*) tp_info.spc_info[i].buffer;
call->rem_srtp_use = srtp_info->peer_use;
break;
}
}
}
/* Override ptime, if this option is specified. */
if (pjsua_var.media_cfg.ptime != 0) {
si->param->setting.frm_per_pkt = (pj_uint8_t)
(pjsua_var.media_cfg.ptime / si->param->info.frm_ptime);
if (si->param->setting.frm_per_pkt == 0)
si->param->setting.frm_per_pkt = 1;
}
/* Disable VAD, if this option is specified. */
if (pjsua_var.media_cfg.no_vad) {
si->param->setting.vad = 0;
}
/* Optionally, application may modify other stream settings here
* (such as jitter buffer parameters, codec ptime, etc.)
*/
si->jb_init = pjsua_var.media_cfg.jb_init;
si->jb_min_pre = pjsua_var.media_cfg.jb_min_pre;
si->jb_max_pre = pjsua_var.media_cfg.jb_max_pre;
si->jb_max = pjsua_var.media_cfg.jb_max;
/* Set SSRC */
si->ssrc = call->ssrc;
/* Set RTP timestamp & sequence, normally these value are intialized
* automatically when stream session created, but for some cases (e.g:
* call reinvite, call update) timestamp and sequence need to be kept
* contigue.
*/
si->rtp_ts = call->rtp_tx_ts;
si->rtp_seq = call->rtp_tx_seq;
si->rtp_seq_ts_set = call->rtp_tx_seq_ts_set;
/* Create session based on session info. */
status = pjmedia_session_create( pjsua_var.med_endpt, &sess_info,
&call->med_tp,
call, &call->session );
if (status != PJ_SUCCESS) {
return status;
}
/* If DTMF callback is installed by application, install our
* callback to the session.
*/
if (pjsua_var.ua_cfg.cb.on_dtmf_digit) {
pjmedia_session_set_dtmf_callback(call->session, 0,
&dtmf_callback,
(void*)(long)(call->index));
}
/* Get the port interface of the first stream in the session.
* We need the port interface to add to the conference bridge.
*/
pjmedia_session_get_port(call->session, 0, &media_port);
/* Notify application about stream creation.
* Note: application may modify media_port to point to different
* media port
*/
if (pjsua_var.ua_cfg.cb.on_stream_created) {
pjsua_var.ua_cfg.cb.on_stream_created(call_id, call->session,
0, &media_port);
}
/*
* Add the call to conference bridge.
*/
{
char tmp[PJSIP_MAX_URL_SIZE];
pj_str_t port_name;
port_name.ptr = tmp;
port_name.slen = pjsip_uri_print(PJSIP_URI_IN_REQ_URI,
call->inv->dlg->remote.info->uri,
tmp, sizeof(tmp));
if (port_name.slen < 1) {
port_name = pj_str("call");
}
status = pjmedia_conf_add_port( pjsua_var.mconf, call->inv->pool,
media_port,
&port_name,
(unsigned*)&call->conf_slot);
if (status != PJ_SUCCESS) {
return status;
}
}
/* Call media direction */
call->media_dir = si->dir;
/* Call media state */
if (call->local_hold)
call->media_st = PJSUA_CALL_MEDIA_LOCAL_HOLD;
else if (call->media_dir == PJMEDIA_DIR_DECODING)
call->media_st = PJSUA_CALL_MEDIA_REMOTE_HOLD;
else
call->media_st = PJSUA_CALL_MEDIA_ACTIVE;
}
/* Print info. */
{
char info[80];
int info_len = 0;
unsigned i;
for (i=0; i<sess_info.stream_cnt; ++i) {
int len;
const char *dir;
pjmedia_stream_info *strm_info = &sess_info.stream_info[i];
switch (strm_info->dir) {
case PJMEDIA_DIR_NONE:
dir = "inactive";
break;
case PJMEDIA_DIR_ENCODING:
dir = "sendonly";
break;
case PJMEDIA_DIR_DECODING:
dir = "recvonly";
break;
case PJMEDIA_DIR_ENCODING_DECODING:
dir = "sendrecv";
break;
default:
dir = "unknown";
break;
}
len = pj_ansi_sprintf( info+info_len,
", stream #%d: %.*s (%s)", i,
(int)strm_info->fmt.encoding_name.slen,
strm_info->fmt.encoding_name.ptr,
dir);
if (len > 0)
info_len += len;
}
PJ_LOG(4,(THIS_FILE,"Media updates%s", info));
}
return PJ_SUCCESS;
}
/*
* Get maxinum number of conference ports.
*/
PJ_DEF(unsigned) pjsua_conf_get_max_ports(void)
{
return pjsua_var.media_cfg.max_media_ports;
}
/*
* Get current number of active ports in the bridge.
*/
PJ_DEF(unsigned) pjsua_conf_get_active_ports(void)
{
unsigned ports[PJSUA_MAX_CONF_PORTS];
unsigned count = PJ_ARRAY_SIZE(ports);
pj_status_t status;
status = pjmedia_conf_enum_ports(pjsua_var.mconf, ports, &count);
if (status != PJ_SUCCESS)
count = 0;
return count;
}
/*
* Enumerate all conference ports.
*/
PJ_DEF(pj_status_t) pjsua_enum_conf_ports(pjsua_conf_port_id id[],
unsigned *count)
{
return pjmedia_conf_enum_ports(pjsua_var.mconf, (unsigned*)id, count);
}
/*
* Get information about the specified conference port
*/
PJ_DEF(pj_status_t) pjsua_conf_get_port_info( pjsua_conf_port_id id,
pjsua_conf_port_info *info)
{
pjmedia_conf_port_info cinfo;
unsigned i;
pj_status_t status;
status = pjmedia_conf_get_port_info( pjsua_var.mconf, id, &cinfo);
if (status != PJ_SUCCESS)
return status;
pj_bzero(info, sizeof(*info));
info->slot_id = id;
info->name = cinfo.name;
info->clock_rate = cinfo.clock_rate;
info->channel_count = cinfo.channel_count;
info->samples_per_frame = cinfo.samples_per_frame;
info->bits_per_sample = cinfo.bits_per_sample;
/* Build array of listeners */
info->listener_cnt = cinfo.listener_cnt;
for (i=0; i<cinfo.listener_cnt; ++i) {
info->listeners[i] = cinfo.listener_slots[i];
}
return PJ_SUCCESS;
}
/*
* Add arbitrary media port to PJSUA's conference bridge.
*/
PJ_DEF(pj_status_t) pjsua_conf_add_port( pj_pool_t *pool,
pjmedia_port *port,
pjsua_conf_port_id *p_id)
{
pj_status_t status;
status = pjmedia_conf_add_port(pjsua_var.mconf, pool,
port, NULL, (unsigned*)p_id);
if (status != PJ_SUCCESS) {
if (p_id)
*p_id = PJSUA_INVALID_ID;
}
return status;
}
/*
* Remove arbitrary slot from the conference bridge.
*/
PJ_DEF(pj_status_t) pjsua_conf_remove_port(pjsua_conf_port_id id)
{
pj_status_t status;
status = pjmedia_conf_remove_port(pjsua_var.mconf, (unsigned)id);
check_snd_dev_idle();
return status;
}
/*
* Establish unidirectional media flow from souce to sink.
*/
PJ_DEF(pj_status_t) pjsua_conf_connect( pjsua_conf_port_id source,
pjsua_conf_port_id sink)
{
/* If sound device idle timer is active, cancel it first. */
if (pjsua_var.snd_idle_timer.id) {
pjsip_endpt_cancel_timer(pjsua_var.endpt, &pjsua_var.snd_idle_timer);
pjsua_var.snd_idle_timer.id = PJ_FALSE;
}
/* Create sound port if none is instantiated */
if (pjsua_var.snd_port==NULL && pjsua_var.null_snd==NULL &&
!pjsua_var.no_snd)
{
pj_status_t status;
status = pjsua_set_snd_dev(pjsua_var.cap_dev, pjsua_var.play_dev);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error opening sound device", status);
return status;
}
}
return pjmedia_conf_connect_port(pjsua_var.mconf, source, sink, 0);
}
/*
* Disconnect media flow from the source to destination port.
*/
PJ_DEF(pj_status_t) pjsua_conf_disconnect( pjsua_conf_port_id source,
pjsua_conf_port_id sink)
{
pj_status_t status;
status = pjmedia_conf_disconnect_port(pjsua_var.mconf, source, sink);
check_snd_dev_idle();
return status;
}
/*
* Adjust the signal level to be transmitted from the bridge to the
* specified port by making it louder or quieter.
*/
PJ_DEF(pj_status_t) pjsua_conf_adjust_tx_level(pjsua_conf_port_id slot,
float level)
{
return pjmedia_conf_adjust_tx_level(pjsua_var.mconf, slot,
(int)((level-1) * 128));
}
/*
* Adjust the signal level to be received from the specified port (to
* the bridge) by making it louder or quieter.
*/
PJ_DEF(pj_status_t) pjsua_conf_adjust_rx_level(pjsua_conf_port_id slot,
float level)
{
return pjmedia_conf_adjust_rx_level(pjsua_var.mconf, slot,
(int)((level-1) * 128));
}
/*
* Get last signal level transmitted to or received from the specified port.
*/
PJ_DEF(pj_status_t) pjsua_conf_get_signal_level(pjsua_conf_port_id slot,
unsigned *tx_level,
unsigned *rx_level)
{
return pjmedia_conf_get_signal_level(pjsua_var.mconf, slot,
tx_level, rx_level);
}
/*****************************************************************************
* File player.
*/
static char* get_basename(const char *path, unsigned len)
{
char *p = ((char*)path) + len;
if (len==0)
return p;
for (--p; p!=path && *p!='/' && *p!='\\'; ) --p;
return (p==path) ? p : p+1;
}
/*
* Create a file player, and automatically connect this player to
* the conference bridge.
*/
PJ_DEF(pj_status_t) pjsua_player_create( const pj_str_t *filename,
unsigned options,
pjsua_player_id *p_id)
{
unsigned slot, file_id;
char path[PJ_MAXPATH];
pj_pool_t *pool;
pjmedia_port *port;
pj_status_t status;
if (pjsua_var.player_cnt >= PJ_ARRAY_SIZE(pjsua_var.player))
return PJ_ETOOMANY;
PJSUA_LOCK();
for (file_id=0; file_id<PJ_ARRAY_SIZE(pjsua_var.player); ++file_id) {
if (pjsua_var.player[file_id].port == NULL)
break;
}
if (file_id == PJ_ARRAY_SIZE(pjsua_var.player)) {
/* This is unexpected */
PJSUA_UNLOCK();
pj_assert(0);
return PJ_EBUG;
}
pj_memcpy(path, filename->ptr, filename->slen);
path[filename->slen] = '\0';
pool = pjsua_pool_create(get_basename(path, filename->slen), 1000, 1000);
if (!pool) {
PJSUA_UNLOCK();
return PJ_ENOMEM;
}
status = pjmedia_wav_player_port_create(
pool, path,
pjsua_var.mconf_cfg.samples_per_frame *
1000 / pjsua_var.media_cfg.channel_count /
pjsua_var.media_cfg.clock_rate,
options, 0, &port);
if (status != PJ_SUCCESS) {
PJSUA_UNLOCK();
pjsua_perror(THIS_FILE, "Unable to open file for playback", status);
pj_pool_release(pool);
return status;
}
status = pjmedia_conf_add_port(pjsua_var.mconf, pool,
port, filename, &slot);
if (status != PJ_SUCCESS) {
pjmedia_port_destroy(port);
PJSUA_UNLOCK();
pjsua_perror(THIS_FILE, "Unable to add file to conference bridge",
status);
pj_pool_release(pool);
return status;
}
pjsua_var.player[file_id].type = 0;
pjsua_var.player[file_id].pool = pool;
pjsua_var.player[file_id].port = port;
pjsua_var.player[file_id].slot = slot;
if (p_id) *p_id = file_id;
++pjsua_var.player_cnt;
PJSUA_UNLOCK();
return PJ_SUCCESS;
}
/*
* Create a file playlist media port, and automatically add the port
* to the conference bridge.
*/
PJ_DEF(pj_status_t) pjsua_playlist_create( const pj_str_t file_names[],
unsigned file_count,
const pj_str_t *label,
unsigned options,
pjsua_player_id *p_id)
{
unsigned slot, file_id, ptime;
pj_pool_t *pool;
pjmedia_port *port;
pj_status_t status;
if (pjsua_var.player_cnt >= PJ_ARRAY_SIZE(pjsua_var.player))
return PJ_ETOOMANY;
PJSUA_LOCK();
for (file_id=0; file_id<PJ_ARRAY_SIZE(pjsua_var.player); ++file_id) {
if (pjsua_var.player[file_id].port == NULL)
break;
}
if (file_id == PJ_ARRAY_SIZE(pjsua_var.player)) {
/* This is unexpected */
PJSUA_UNLOCK();
pj_assert(0);
return PJ_EBUG;
}
ptime = pjsua_var.mconf_cfg.samples_per_frame * 1000 /
pjsua_var.media_cfg.clock_rate;
pool = pjsua_pool_create("playlist", 1000, 1000);
if (!pool) {
PJSUA_UNLOCK();
return PJ_ENOMEM;
}
status = pjmedia_wav_playlist_create(pool, label,
file_names, file_count,
ptime, options, 0, &port);
if (status != PJ_SUCCESS) {
PJSUA_UNLOCK();
pjsua_perror(THIS_FILE, "Unable to create playlist", status);
pj_pool_release(pool);
return status;
}
status = pjmedia_conf_add_port(pjsua_var.mconf, pool,
port, &port->info.name, &slot);
if (status != PJ_SUCCESS) {
pjmedia_port_destroy(port);
PJSUA_UNLOCK();
pjsua_perror(THIS_FILE, "Unable to add port", status);
pj_pool_release(pool);
return status;
}
pjsua_var.player[file_id].type = 1;
pjsua_var.player[file_id].pool = pool;
pjsua_var.player[file_id].port = port;
pjsua_var.player[file_id].slot = slot;
if (p_id) *p_id = file_id;
++pjsua_var.player_cnt;
PJSUA_UNLOCK();
return PJ_SUCCESS;
}
/*
* Get conference port ID associated with player.
*/
PJ_DEF(pjsua_conf_port_id) pjsua_player_get_conf_port(pjsua_player_id id)
{
PJ_ASSERT_RETURN(id>=0&&id<(int)PJ_ARRAY_SIZE(pjsua_var.player), PJ_EINVAL);
PJ_ASSERT_RETURN(pjsua_var.player[id].port != NULL, PJ_EINVAL);
return pjsua_var.player[id].slot;
}
/*
* Get the media port for the player.
*/
PJ_DEF(pj_status_t) pjsua_player_get_port( pjsua_player_id id,
pjmedia_port **p_port)
{
PJ_ASSERT_RETURN(id>=0&&id<(int)PJ_ARRAY_SIZE(pjsua_var.player), PJ_EINVAL);
PJ_ASSERT_RETURN(pjsua_var.player[id].port != NULL, PJ_EINVAL);
PJ_ASSERT_RETURN(p_port != NULL, PJ_EINVAL);
*p_port = pjsua_var.player[id].port;
return PJ_SUCCESS;
}
/*
* Set playback position.
*/
PJ_DEF(pj_status_t) pjsua_player_set_pos( pjsua_player_id id,
pj_uint32_t samples)
{
PJ_ASSERT_RETURN(id>=0&&id<(int)PJ_ARRAY_SIZE(pjsua_var.player), PJ_EINVAL);
PJ_ASSERT_RETURN(pjsua_var.player[id].port != NULL, PJ_EINVAL);
PJ_ASSERT_RETURN(pjsua_var.player[id].type == 0, PJ_EINVAL);
return pjmedia_wav_player_port_set_pos(pjsua_var.player[id].port, samples);
}
/*
* Close the file, remove the player from the bridge, and free
* resources associated with the file player.
*/
PJ_DEF(pj_status_t) pjsua_player_destroy(pjsua_player_id id)
{
PJ_ASSERT_RETURN(id>=0&&id<(int)PJ_ARRAY_SIZE(pjsua_var.player), PJ_EINVAL);
PJ_ASSERT_RETURN(pjsua_var.player[id].port != NULL, PJ_EINVAL);
PJSUA_LOCK();
if (pjsua_var.player[id].port) {
pjsua_conf_remove_port(pjsua_var.player[id].slot);
pjmedia_port_destroy(pjsua_var.player[id].port);
pjsua_var.player[id].port = NULL;
pjsua_var.player[id].slot = 0xFFFF;
pj_pool_release(pjsua_var.player[id].pool);
pjsua_var.player[id].pool = NULL;
pjsua_var.player_cnt--;
}
PJSUA_UNLOCK();
return PJ_SUCCESS;
}
/*****************************************************************************
* File recorder.
*/
/*
* Create a file recorder, and automatically connect this recorder to
* the conference bridge.
*/
PJ_DEF(pj_status_t) pjsua_recorder_create( const pj_str_t *filename,
unsigned enc_type,
void *enc_param,
pj_ssize_t max_size,
unsigned options,
pjsua_recorder_id *p_id)
{
enum Format
{
FMT_UNKNOWN,
FMT_WAV,
FMT_MP3,
};
unsigned slot, file_id;
char path[PJ_MAXPATH];
pj_str_t ext;
int file_format;
pj_pool_t *pool;
pjmedia_port *port;
pj_status_t status;
/* Filename must present */
PJ_ASSERT_RETURN(filename != NULL, PJ_EINVAL);
/* Don't support max_size at present */
PJ_ASSERT_RETURN(max_size == 0 || max_size == -1, PJ_EINVAL);
/* Don't support encoding type at present */
PJ_ASSERT_RETURN(enc_type == 0, PJ_EINVAL);
if (pjsua_var.rec_cnt >= PJ_ARRAY_SIZE(pjsua_var.recorder))
return PJ_ETOOMANY;
/* Determine the file format */
ext.ptr = filename->ptr + filename->slen - 4;
ext.slen = 4;
if (pj_stricmp2(&ext, ".wav") == 0)
file_format = FMT_WAV;
else if (pj_stricmp2(&ext, ".mp3") == 0)
file_format = FMT_MP3;
else {
PJ_LOG(1,(THIS_FILE, "pjsua_recorder_create() error: unable to "
"determine file format for %.*s",
(int)filename->slen, filename->ptr));
return PJ_ENOTSUP;
}
PJSUA_LOCK();
for (file_id=0; file_id<PJ_ARRAY_SIZE(pjsua_var.recorder); ++file_id) {
if (pjsua_var.recorder[file_id].port == NULL)
break;
}
if (file_id == PJ_ARRAY_SIZE(pjsua_var.recorder)) {
/* This is unexpected */
PJSUA_UNLOCK();
pj_assert(0);
return PJ_EBUG;
}
pj_memcpy(path, filename->ptr, filename->slen);
path[filename->slen] = '\0';
pool = pjsua_pool_create(get_basename(path, filename->slen), 1000, 1000);
if (!pool) {
PJSUA_UNLOCK();
return PJ_ENOMEM;
}
if (file_format == FMT_WAV) {
status = pjmedia_wav_writer_port_create(pool, path,
pjsua_var.media_cfg.clock_rate,
pjsua_var.mconf_cfg.channel_count,
pjsua_var.mconf_cfg.samples_per_frame,
pjsua_var.mconf_cfg.bits_per_sample,
options, 0, &port);
} else {
PJ_UNUSED_ARG(enc_param);
port = NULL;
status = PJ_ENOTSUP;
}
if (status != PJ_SUCCESS) {
PJSUA_UNLOCK();
pjsua_perror(THIS_FILE, "Unable to open file for recording", status);
pj_pool_release(pool);
return status;
}
status = pjmedia_conf_add_port(pjsua_var.mconf, pool,
port, filename, &slot);
if (status != PJ_SUCCESS) {
pjmedia_port_destroy(port);
PJSUA_UNLOCK();
pj_pool_release(pool);
return status;
}
pjsua_var.recorder[file_id].port = port;
pjsua_var.recorder[file_id].slot = slot;
pjsua_var.recorder[file_id].pool = pool;
if (p_id) *p_id = file_id;
++pjsua_var.rec_cnt;
PJSUA_UNLOCK();
return PJ_SUCCESS;
}
/*
* Get conference port associated with recorder.
*/
PJ_DEF(pjsua_conf_port_id) pjsua_recorder_get_conf_port(pjsua_recorder_id id)
{
PJ_ASSERT_RETURN(id>=0 && id<(int)PJ_ARRAY_SIZE(pjsua_var.recorder),
PJ_EINVAL);
PJ_ASSERT_RETURN(pjsua_var.recorder[id].port != NULL, PJ_EINVAL);
return pjsua_var.recorder[id].slot;
}
/*
* Get the media port for the recorder.
*/
PJ_DEF(pj_status_t) pjsua_recorder_get_port( pjsua_recorder_id id,
pjmedia_port **p_port)
{
PJ_ASSERT_RETURN(id>=0 && id<(int)PJ_ARRAY_SIZE(pjsua_var.recorder),
PJ_EINVAL);
PJ_ASSERT_RETURN(pjsua_var.recorder[id].port != NULL, PJ_EINVAL);
PJ_ASSERT_RETURN(p_port != NULL, PJ_EINVAL);
*p_port = pjsua_var.recorder[id].port;
return PJ_SUCCESS;
}
/*
* Destroy recorder (this will complete recording).
*/
PJ_DEF(pj_status_t) pjsua_recorder_destroy(pjsua_recorder_id id)
{
PJ_ASSERT_RETURN(id>=0 && id<(int)PJ_ARRAY_SIZE(pjsua_var.recorder),
PJ_EINVAL);
PJ_ASSERT_RETURN(pjsua_var.recorder[id].port != NULL, PJ_EINVAL);
PJSUA_LOCK();
if (pjsua_var.recorder[id].port) {
pjsua_conf_remove_port(pjsua_var.recorder[id].slot);
pjmedia_port_destroy(pjsua_var.recorder[id].port);
pjsua_var.recorder[id].port = NULL;
pjsua_var.recorder[id].slot = 0xFFFF;
pj_pool_release(pjsua_var.recorder[id].pool);
pjsua_var.recorder[id].pool = NULL;
pjsua_var.rec_cnt--;
}
PJSUA_UNLOCK();
return PJ_SUCCESS;
}
/*****************************************************************************
* Sound devices.
*/
/*
* Enum sound devices.
*/
PJ_DEF(pj_status_t) pjsua_enum_snd_devs( pjmedia_snd_dev_info info[],
unsigned *count)
{
unsigned i, dev_count;
dev_count = pjmedia_snd_get_dev_count();
if (dev_count > *count) dev_count = *count;
for (i=0; i<dev_count; ++i) {
const pjmedia_snd_dev_info *ci;
ci = pjmedia_snd_get_dev_info(i);
pj_memcpy(&info[i], ci, sizeof(*ci));
}
*count = dev_count;
return PJ_SUCCESS;
}
/* Close existing sound device */
static void close_snd_dev(void)
{
/* Close sound device */
if (pjsua_var.snd_port) {
const pjmedia_snd_dev_info *cap_info, *play_info;
cap_info = pjmedia_snd_get_dev_info(pjsua_var.cap_dev);
play_info = pjmedia_snd_get_dev_info(pjsua_var.play_dev);
PJ_LOG(4,(THIS_FILE, "Closing %s sound playback device and "
"%s sound capture device",
play_info->name, cap_info->name));
pjmedia_snd_port_disconnect(pjsua_var.snd_port);
pjmedia_snd_port_destroy(pjsua_var.snd_port);
pjsua_var.snd_port = NULL;
}
/* Close null sound device */
if (pjsua_var.null_snd) {
PJ_LOG(4,(THIS_FILE, "Closing null sound device.."));
pjmedia_master_port_destroy(pjsua_var.null_snd, PJ_FALSE);
pjsua_var.null_snd = NULL;
}
if (pjsua_var.snd_pool)
pj_pool_release(pjsua_var.snd_pool);
pjsua_var.snd_pool = NULL;
}
/*
* Select or change sound device. Application may call this function at
* any time to replace current sound device.
*/
PJ_DEF(pj_status_t) pjsua_set_snd_dev( int capture_dev,
int playback_dev)
{
pjmedia_port *conf_port;
const pjmedia_snd_dev_info *play_info;
unsigned clock_rates[] = {0, 22050, 44100, 48000, 32000, 16000,
8000};
unsigned selected_clock_rate = 0;
unsigned i;
pjmedia_snd_stream *strm;
pjmedia_snd_stream_info si;
pj_str_t tmp;
pj_status_t status = -1;
/* Check if NULL sound device is used */
if (NULL_SND_DEV_ID == capture_dev || NULL_SND_DEV_ID == playback_dev) {
return pjsua_set_null_snd_dev();
}
/* Close existing sound port */
close_snd_dev();
/* Create memory pool for sound device. */
pjsua_var.snd_pool = pjsua_pool_create("pjsua_snd", 4000, 4000);
PJ_ASSERT_RETURN(pjsua_var.snd_pool, PJ_ENOMEM);
/* Set default clock rate */
clock_rates[0] = pjsua_var.media_cfg.snd_clock_rate;
if (clock_rates[0] == 0)
clock_rates[0] = pjsua_var.media_cfg.clock_rate;
/* Get the port0 of the conference bridge. */
conf_port = pjmedia_conf_get_master_port(pjsua_var.mconf);
pj_assert(conf_port != NULL);
/* Attempts to open the sound device with different clock rates */
for (i=0; i<PJ_ARRAY_SIZE(clock_rates); ++i) {
char errmsg[PJ_ERR_MSG_SIZE];
unsigned samples_per_frame;
PJ_LOG(4,(THIS_FILE,
"pjsua_set_snd_dev(): attempting to open devices "
"@%d Hz", clock_rates[i]));
samples_per_frame = clock_rates[i] *
pjsua_var.media_cfg.audio_frame_ptime *
pjsua_var.media_cfg.channel_count / 1000;
/* Create the sound device. Sound port will start immediately. */
status = pjmedia_snd_port_create(pjsua_var.snd_pool, capture_dev,
playback_dev,
clock_rates[i],
pjsua_var.media_cfg.channel_count,
samples_per_frame,
16, 0, &pjsua_var.snd_port);
if (status == PJ_SUCCESS) {
selected_clock_rate = clock_rates[i];
/* If there's mismatch between sound port and conference's port,
* create a resample port to bridge them.
*/
if (selected_clock_rate != pjsua_var.media_cfg.clock_rate) {
pjmedia_port *resample_port;
unsigned resample_opt = 0;
if (pjsua_var.media_cfg.quality >= 3 &&
pjsua_var.media_cfg.quality <= 4)
{
resample_opt |= PJMEDIA_RESAMPLE_USE_SMALL_FILTER;
}
else if (pjsua_var.media_cfg.quality < 3) {
resample_opt |= PJMEDIA_RESAMPLE_USE_LINEAR;
}
status = pjmedia_resample_port_create(pjsua_var.snd_pool,
conf_port,
selected_clock_rate,
resample_opt,
&resample_port);
if (status != PJ_SUCCESS) {
pj_strerror(status, errmsg, sizeof(errmsg));
PJ_LOG(4, (THIS_FILE,
"Error creating resample port, trying next "
"clock rate",
errmsg));
pjmedia_snd_port_destroy(pjsua_var.snd_port);
pjsua_var.snd_port = NULL;
continue;
} else {
conf_port = resample_port;
break;
}
} else {
break;
}
}
pj_strerror(status, errmsg, sizeof(errmsg));
PJ_LOG(4, (THIS_FILE, "..failed: %s", errmsg));
}
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to open sound device", status);
return status;
}
/* Set AEC */
pjmedia_snd_port_set_ec( pjsua_var.snd_port, pjsua_var.snd_pool,
pjsua_var.media_cfg.ec_tail_len,
pjsua_var.media_cfg.ec_options);
/* Connect sound port to the bridge */
status = pjmedia_snd_port_connect(pjsua_var.snd_port,
conf_port );
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to connect conference port to "
"sound device", status);
pjmedia_snd_port_destroy(pjsua_var.snd_port);
pjsua_var.snd_port = NULL;
return status;
}
/* Save the device IDs */
pjsua_var.cap_dev = capture_dev;
pjsua_var.play_dev = playback_dev;
/* Update sound device name. */
strm = pjmedia_snd_port_get_snd_stream(pjsua_var.snd_port);
pjmedia_snd_stream_get_info(strm, &si);
play_info = pjmedia_snd_get_dev_info(si.rec_id);
if (si.clock_rate != pjsua_var.media_cfg.clock_rate) {
char tmp_buf[128];
int tmp_buf_len = sizeof(tmp_buf);
tmp_buf_len = pj_ansi_snprintf(tmp_buf, sizeof(tmp_buf)-1, "%s (%dKHz)",
play_info->name, si.clock_rate/1000);
pj_strset(&tmp, tmp_buf, tmp_buf_len);
pjmedia_conf_set_port0_name(pjsua_var.mconf, &tmp);
} else {
pjmedia_conf_set_port0_name(pjsua_var.mconf,
pj_cstr(&tmp, play_info->name));
}
return PJ_SUCCESS;
}
/*
* Get currently active sound devices. If sound devices has not been created
* (for example when pjsua_start() is not called), it is possible that
* the function returns PJ_SUCCESS with -1 as device IDs.
*/
PJ_DEF(pj_status_t) pjsua_get_snd_dev(int *capture_dev,
int *playback_dev)
{
if (capture_dev) {
*capture_dev = pjsua_var.cap_dev;
}
if (playback_dev) {
*playback_dev = pjsua_var.play_dev;
}
return PJ_SUCCESS;
}
/*
* Use null sound device.
*/
PJ_DEF(pj_status_t) pjsua_set_null_snd_dev(void)
{
pjmedia_port *conf_port;
pj_status_t status;
/* Close existing sound device */
close_snd_dev();
/* Create memory pool for sound device. */
pjsua_var.snd_pool = pjsua_pool_create("pjsua_snd", 4000, 4000);
PJ_ASSERT_RETURN(pjsua_var.snd_pool, PJ_ENOMEM);
PJ_LOG(4,(THIS_FILE, "Opening null sound device.."));
/* Get the port0 of the conference bridge. */
conf_port = pjmedia_conf_get_master_port(pjsua_var.mconf);
pj_assert(conf_port != NULL);
/* Create master port, connecting port0 of the conference bridge to
* a null port.
*/
status = pjmedia_master_port_create(pjsua_var.snd_pool, pjsua_var.null_port,
conf_port, 0, &pjsua_var.null_snd);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to create null sound device",
status);
return status;
}
/* Start the master port */
status = pjmedia_master_port_start(pjsua_var.null_snd);
PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
pjsua_var.cap_dev = NULL_SND_DEV_ID;
pjsua_var.play_dev = NULL_SND_DEV_ID;
return PJ_SUCCESS;
}
/*
* Use no device!
*/
PJ_DEF(pjmedia_port*) pjsua_set_no_snd_dev(void)
{
/* Close existing sound device */
close_snd_dev();
pjsua_var.no_snd = PJ_TRUE;
return pjmedia_conf_get_master_port(pjsua_var.mconf);
}
/*
* Configure the AEC settings of the sound port.
*/
PJ_DEF(pj_status_t) pjsua_set_ec(unsigned tail_ms, unsigned options)
{
pjsua_var.media_cfg.ec_tail_len = tail_ms;
if (pjsua_var.snd_port)
return pjmedia_snd_port_set_ec( pjsua_var.snd_port, pjsua_var.pool,
tail_ms, options);
return PJ_SUCCESS;
}
/*
* Get current AEC tail length.
*/
PJ_DEF(pj_status_t) pjsua_get_ec_tail(unsigned *p_tail_ms)
{
*p_tail_ms = pjsua_var.media_cfg.ec_tail_len;
return PJ_SUCCESS;
}
/*****************************************************************************
* Codecs.
*/
/*
* Enum all supported codecs in the system.
*/
PJ_DEF(pj_status_t) pjsua_enum_codecs( pjsua_codec_info id[],
unsigned *p_count )
{
pjmedia_codec_mgr *codec_mgr;
pjmedia_codec_info info[32];
unsigned i, count, prio[32];
pj_status_t status;
codec_mgr = pjmedia_endpt_get_codec_mgr(pjsua_var.med_endpt);
count = PJ_ARRAY_SIZE(info);
status = pjmedia_codec_mgr_enum_codecs( codec_mgr, &count, info, prio);
if (status != PJ_SUCCESS) {
*p_count = 0;
return status;
}
if (count > *p_count) count = *p_count;
for (i=0; i<count; ++i) {
pjmedia_codec_info_to_id(&info[i], id[i].buf_, sizeof(id[i].buf_));
id[i].codec_id = pj_str(id[i].buf_);
id[i].priority = (pj_uint8_t) prio[i];
}
*p_count = count;
return PJ_SUCCESS;
}
/*
* Change codec priority.
*/
PJ_DEF(pj_status_t) pjsua_codec_set_priority( const pj_str_t *codec_id,
pj_uint8_t priority )
{
const pj_str_t all = { NULL, 0 };
pjmedia_codec_mgr *codec_mgr;
codec_mgr = pjmedia_endpt_get_codec_mgr(pjsua_var.med_endpt);
if (codec_id->slen==1 && *codec_id->ptr=='*')
codec_id = &all;
return pjmedia_codec_mgr_set_codec_priority(codec_mgr, codec_id,
priority);
}
/*
* Get codec parameters.
*/
PJ_DEF(pj_status_t) pjsua_codec_get_param( const pj_str_t *codec_id,
pjmedia_codec_param *param )
{
const pj_str_t all = { NULL, 0 };
const pjmedia_codec_info *info;
pjmedia_codec_mgr *codec_mgr;
unsigned count = 1;
pj_status_t status;
codec_mgr = pjmedia_endpt_get_codec_mgr(pjsua_var.med_endpt);
if (codec_id->slen==1 && *codec_id->ptr=='*')
codec_id = &all;
status = pjmedia_codec_mgr_find_codecs_by_id(codec_mgr, codec_id,
&count, &info, NULL);
if (status != PJ_SUCCESS)
return status;
if (count != 1)
return PJ_ENOTFOUND;
status = pjmedia_codec_mgr_get_default_param( codec_mgr, info, param);
return status;
}
/*
* Set codec parameters.
*/
PJ_DEF(pj_status_t) pjsua_codec_set_param( const pj_str_t *id,
const pjmedia_codec_param *param)
{
PJ_UNUSED_ARG(id);
PJ_UNUSED_ARG(param);
PJ_TODO(set_codec_param);
return PJ_SUCCESS;
}