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pjproject/pjsip/src/pjsua-lib/pjsua_media.c

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/* $Id$ */
/*
* Copyright (C) 2003-2007 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 PTIME 20
#define FPS (1000/PTIME)
#define DEFAULT_RTP_PORT 4000
/* Next RTP port to be used */
static pj_uint16_t next_rtp_port;
/* Close existing sound device */
static void close_snd_dev(void);
/**
* 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 */
pj_memcpy(&pjsua_var.media_cfg, cfg, sizeof(*cfg));
/* Normalize configuration */
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,
pjsua_var.media_cfg.quality);
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_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.samples_per_frame = pjsua_var.media_cfg.clock_rate *
PTIME / 1000;
pjsua_var.mconf_cfg.channel_count = 1;
pjsua_var.mconf_cfg.bits_per_sample = 16;
/* 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,
"Media stack initialization has returned error",
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);
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;
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], 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], 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 (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 (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 {
pj_in_addr addr;
/* Get local IP address. */
status = pj_gethostip(&addr);
if (status != PJ_SUCCESS)
goto on_error;
for (i=0; i<2; ++i)
mapped_addr[i].sin_addr = 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:%d",
pj_inet_ntoa(skinfo->rtp_addr_name.sin_addr),
pj_ntohs(skinfo->rtp_addr_name.sin_port)));
PJ_LOG(4,(THIS_FILE, "RTCP socket reachable at %s:%d",
pj_inet_ntoa(skinfo->rtcp_addr_name.sin_addr),
pj_ntohs(skinfo->rtcp_addr_name.sin_port)));
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;
}
/*
* 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;
}
/* Create sound port if none is created yet */
if (pjsua_var.snd_port==NULL && pjsua_var.null_snd==NULL &&
!pjsua_var.no_snd)
{
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 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) {
(*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_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 */
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_udp_simulate_lost(pjsua_var.calls[i].med_tp,
PJMEDIA_DIR_ENCODING,
pjsua_var.media_cfg.tx_drop_pct);
pjmedia_transport_udp_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 ICE media transports (when ice is enabled) */
static pj_status_t create_ice_media_transports(pjsua_transport_config *cfg)
{
unsigned i;
pj_sockaddr_in addr;
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;
}
pj_sockaddr_in_init(&addr, 0, (pj_uint16_t)cfg->port);
/* Create each media transport */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
pj_ice_strans_comp comp;
int next_port;
#if PJMEDIA_ADVERTISE_RTCP
enum { COMP_CNT=2 };
#else
enum { COMP_CNT=1 };
#endif
status = pjmedia_ice_create(pjsua_var.med_endpt, NULL, COMP_CNT,
&pjsua_var.stun_cfg,
&pjsua_var.calls[i].med_tp);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to create ICE media transport",
status);
goto on_error;
}
status = pjmedia_ice_start_init(pjsua_var.calls[i].med_tp, 0, &addr,
&pjsua_var.stun_srv.ipv4, NULL);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error starting ICE transport",
status);
goto on_error;
}
pjmedia_ice_get_comp(pjsua_var.calls[i].med_tp, 1, &comp);
next_port = pj_ntohs(comp.local_addr.ipv4.sin_port);
next_port += 2;
addr.sin_port = pj_htons((pj_uint16_t)next_port);
}
/* Wait until all ICE transports are ready */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
/* Wait until interface status is PJ_SUCCESS */
for (;;) {
status = pjmedia_ice_get_init_status(pjsua_var.calls[i].med_tp);
if (status == PJ_EPENDING)
pjsua_handle_events(100);
else
break;
}
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE,
"Error adding STUN address to ICE media transport",
status);
goto on_error;
}
}
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(&cfg);
} 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)
{
pjsua_call *call = &pjsua_var.calls[call_id];
if (pjsua_var.media_cfg.enable_ice) {
pj_ice_sess_role ice_role;
pj_status_t status;
ice_role = (role==PJSIP_ROLE_UAC ? PJ_ICE_SESS_ROLE_CONTROLLING :
PJ_ICE_SESS_ROLE_CONTROLLED);
/* Restart ICE */
pjmedia_ice_stop_ice(call->med_tp);
status = pjmedia_ice_init_ice(call->med_tp, ice_role, NULL, NULL);
if (status != PJ_SUCCESS)
return status;
}
return PJ_SUCCESS;
}
pj_status_t pjsua_media_channel_create_sdp(pjsua_call_id call_id,
pj_pool_t *pool,
pjmedia_sdp_session **p_sdp)
{
pjmedia_sdp_session *sdp;
pjmedia_sock_info skinfo;
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;
}
/* Get media socket info */
pjmedia_transport_get_info(call->med_tp, &skinfo);
/* Create SDP */
status = pjmedia_endpt_create_sdp(pjsua_var.med_endpt, pool, 1,
&skinfo, &sdp);
if (status != PJ_SUCCESS)
goto on_error;
if (pjsua_var.media_cfg.enable_ice) {
status = pjmedia_ice_modify_sdp(call->med_tp, pool, sdp);
if (status != PJ_SUCCESS)
goto on_error;
}
*p_sdp = sdp;
return PJ_SUCCESS;
on_error:
pjsua_media_channel_deinit(call_id);
return status;
}
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) {
pjmedia_conf_remove_port(pjsua_var.mconf, call->conf_slot);
call->conf_slot = PJSUA_INVALID_ID;
}
if (call->session) {
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 (pjsua_var.media_cfg.enable_ice) {
pjmedia_ice_stop_ice(call->med_tp);
}
return PJ_SUCCESS;
}
/*
* DTMF callback from the stream.
*/
static void dtmf_callback(pjmedia_stream *strm, void *user_data,
int digit)
{
PJ_UNUSED_ARG(strm);
if (pjsua_var.ua_cfg.cb.on_dtmf_digit) {
pjsua_call_id call_id;
call_id = (pjsua_call_id)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_port *media_port;
pj_str_t port_name;
char tmp[PJSIP_MAX_URL_SIZE];
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.
* We only support one stream per session at the moment
*/
status = pjmedia_session_info_from_sdp( call->inv->dlg->pool,
pjsua_var.med_endpt,
1,&sess_info,
local_sdp, remote_sdp);
if (status != PJ_SUCCESS)
return status;
/* Check if media is put on-hold */
if (sess_info.stream_cnt == 0 ||
sess_info.stream_info[0].dir == PJMEDIA_DIR_NONE)
{
/* Determine who puts the call on-hold */
if (prev_media_st == PJSUA_CALL_MEDIA_ACTIVE) {
if (pjmedia_sdp_neg_was_answer_remote(call->inv->neg)) {
/* It was local who offer hold */
call->media_st = PJSUA_CALL_MEDIA_LOCAL_HOLD;
} else {
call->media_st = PJSUA_CALL_MEDIA_REMOTE_HOLD;
}
}
call->media_dir = PJMEDIA_DIR_NONE;
/* Shutdown ICE session */
if (pjsua_var.media_cfg.enable_ice) {
pjmedia_ice_stop_ice(call->med_tp);
}
/* No need because we need keepalive? */
} else {
/* Start ICE */
if (pjsua_var.media_cfg.enable_ice) {
status = pjmedia_ice_start_ice(call->med_tp, call->inv->pool,
remote_sdp, 0);
if (status != PJ_SUCCESS)
return status;
}
/* Override ptime, if this option is specified. */
if (pjsua_var.media_cfg.ptime != 0) {
sess_info.stream_info[0].param->setting.frm_per_pkt = (pj_uint8_t)
(pjsua_var.media_cfg.ptime / sess_info.stream_info[0].param->info.frm_ptime);
if (sess_info.stream_info[0].param->setting.frm_per_pkt == 0)
sess_info.stream_info[0].param->setting.frm_per_pkt = 1;
}
/* Disable VAD, if this option is specified. */
if (pjsua_var.media_cfg.no_vad) {
sess_info.stream_info[0].param->setting.vad = 0;
}
/* Optionally, application may modify other stream settings here
* (such as jitter buffer parameters, codec ptime, etc.)
*/
sess_info.stream_info[0].jb_init = pjsua_var.media_cfg.jb_init;
sess_info.stream_info[0].jb_min_pre = pjsua_var.media_cfg.jb_min_pre;
sess_info.stream_info[0].jb_max_pre = pjsua_var.media_cfg.jb_max_pre;
sess_info.stream_info[0].jb_max = pjsua_var.media_cfg.jb_max;
/* 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*)(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);
/*
* Add the call to conference bridge.
*/
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's media state is active */
call->media_st = PJSUA_CALL_MEDIA_ACTIVE;
call->media_dir = sess_info.stream_info[0].dir;
}
/* 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[256];
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)
{
return pjmedia_conf_remove_port(pjsua_var.mconf, (unsigned)id);
}
/*
* 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)
{
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)
{
return pjmedia_conf_disconnect_port(pjsua_var.mconf, source, sink);
}
/*
* 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.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, pjsua_var.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_recorder_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) {
pjmedia_conf_remove_port(pjsua_var.mconf,
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) {
pjmedia_conf_remove_port(pjsua_var.mconf,
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;
}
}
/*
* 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, 11025, 32000, 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;
/* Close existing sound port */
close_snd_dev();
/* Set default clock rate */
clock_rates[0] = pjsua_var.media_cfg.clock_rate;
/* 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];
PJ_LOG(4,(THIS_FILE,
"pjsua_set_snd_dev(): attempting to open devices "
"@%d Hz", clock_rates[i]));
/* Create the sound device. Sound port will start immediately. */
status = pjmedia_snd_port_create(pjsua_var.pool, capture_dev,
playback_dev,
clock_rates[i], 1,
clock_rates[i]/FPS,
16, 0, &pjsua_var.snd_port);
if (status == PJ_SUCCESS) {
selected_clock_rate = clock_rates[i];
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;
}
/* Get the port0 of the conference bridge. */
conf_port = pjmedia_conf_get_master_port(pjsua_var.mconf);
pj_assert(conf_port != NULL);
/* Set AEC */
pjmedia_snd_port_set_ec( pjsua_var.snd_port, pjsua_var.pool,
pjsua_var.media_cfg.ec_tail_len,
pjsua_var.media_cfg.ec_options);
/* 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;
status = pjmedia_resample_port_create(pjsua_var.pool, conf_port,
selected_clock_rate, 0,
&resample_port);
if (status != PJ_SUCCESS) {
pjsua_perror("Error creating resample port", THIS_FILE, status);
return status;
}
conf_port = resample_port;
}
/* 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);
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();
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.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);
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 )
{
pjmedia_codec_mgr *codec_mgr;
codec_mgr = pjmedia_endpt_get_codec_mgr(pjsua_var.med_endpt);
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 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);
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;
}
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