Gitiles
Code Review Sign In
review.jami.net / pjproject / 8a3670f532cd3351d83863c9a3e0a34884b48242 / . / pjsip / src / pjsua-lib / pjsua_media.c
blob: 8e7db5ac53f9d8e8216da7da4b7fa47f54d42449 [file] [log] [blame]
/* $Id$ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* 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
#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;
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_status_t status;
pj_log_push_indent();
/* Specify which audio device settings are save-able */
pjsua_var.aud_svmask = 0xFFFFFFFF;
/* These are not-settable */
pjsua_var.aud_svmask &= ~(PJMEDIA_AUD_DEV_CAP_EXT_FORMAT |
PJMEDIA_AUD_DEV_CAP_INPUT_SIGNAL_METER |
PJMEDIA_AUD_DEV_CAP_OUTPUT_SIGNAL_METER);
/* EC settings use different API */
pjsua_var.aud_svmask &= ~(PJMEDIA_AUD_DEV_CAP_EC |
PJMEDIA_AUD_DEV_CAP_EC_TAIL);
/* 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);
goto on_error;
}
status = pjsua_aud_subsys_init();
if (status != PJ_SUCCESS)
goto on_error;
#if defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0)
/* Initialize SRTP library (ticket #788). */
status = pjmedia_srtp_init_lib(pjsua_var.med_endpt);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing SRTP library",
status);
goto on_error;
}
#endif
/* Video */
#if PJMEDIA_HAS_VIDEO
status = pjsua_vid_subsys_init();
if (status != PJ_SUCCESS)
goto on_error;
#endif
pj_log_pop_indent();
return PJ_SUCCESS;
on_error:
pj_log_pop_indent();
return status;
}
/*
* Start pjsua media subsystem.
*/
pj_status_t pjsua_media_subsys_start(void)
{
pj_status_t status;
pj_log_push_indent();
#if DISABLED_FOR_TICKET_1185
/* Create media for calls, if none is specified */
if (pjsua_var.calls[0].media[0].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) {
pj_log_pop_indent();
return status;
}
}
#endif
/* Audio */
status = pjsua_aud_subsys_start();
if (status != PJ_SUCCESS) {
pj_log_pop_indent();
return status;
}
/* Video */
#if PJMEDIA_HAS_VIDEO
status = pjsua_vid_subsys_start();
if (status != PJ_SUCCESS) {
pjsua_aud_subsys_destroy();
pj_log_pop_indent();
return status;
}
#endif
/* Perform NAT detection */
status = pjsua_detect_nat_type();
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status, "NAT type detection failed"));
}
pj_log_pop_indent();
return PJ_SUCCESS;
}
/*
* Destroy pjsua media subsystem.
*/
pj_status_t pjsua_media_subsys_destroy(unsigned flags)
{
unsigned i;
PJ_LOG(4,(THIS_FILE, "Shutting down media.."));
pj_log_push_indent();
if (pjsua_var.med_endpt) {
pjsua_aud_subsys_destroy();
}
/* Close media transports */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
/* TODO: check if we're not allowed to send to network in the
* "flags", and if so do not do TURN allocation...
*/
PJ_UNUSED_ARG(flags);
pjsua_media_channel_deinit(i);
}
/* Destroy media endpoint. */
if (pjsua_var.med_endpt) {
# if PJMEDIA_HAS_VIDEO
pjsua_vid_subsys_destroy();
# endif
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;
pj_log_pop_indent();
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 = 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;
if (next_rtp_port == 0)
next_rtp_port = (pj_uint16_t)40000;
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 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;
}
/* Apply QoS to RTP socket, if specified */
status = pj_sock_apply_qos2(sock[0], cfg->qos_type,
&cfg->qos_params,
2, THIS_FILE, "RTP socket");
/* Bind RTP socket */
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 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;
}
/* Apply QoS to RTCP socket, if specified */
status = pj_sock_apply_qos2(sock[1], cfg->qos_type,
&cfg->qos_params,
2, THIS_FILE, "RTCP socket");
/* Bind RTCP socket */
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;
}
/* Create normal UDP media transports */
static pj_status_t create_udp_media_transport(const pjsua_transport_config *cfg,
pjsua_call_media *call_med)
{
pjmedia_sock_info skinfo;
pj_status_t status;
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, &call_med->tp);
if (status != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Unable to create media transport",
status);
goto on_error;
}
pjmedia_transport_simulate_lost(call_med->tp, PJMEDIA_DIR_ENCODING,
pjsua_var.media_cfg.tx_drop_pct);
pjmedia_transport_simulate_lost(call_med->tp, PJMEDIA_DIR_DECODING,
pjsua_var.media_cfg.rx_drop_pct);
call_med->tp_ready = PJ_SUCCESS;
return PJ_SUCCESS;
on_error:
if (call_med->tp)
pjmedia_transport_close(call_med->tp);
return status;
}
#if DISABLED_FOR_TICKET_1185
/* Create normal UDP media transports */
static pj_status_t create_udp_media_transports(pjsua_transport_config *cfg)
{
unsigned i;
pj_status_t status;
for (i=0; i < pjsua_var.ua_cfg.max_calls; ++i) {
pjsua_call *call = &pjsua_var.calls[i];
unsigned strm_idx;
for (strm_idx=0; strm_idx < call->med_cnt; ++strm_idx) {
pjsua_call_media *call_med = &call->media[strm_idx];
status = create_udp_media_transport(cfg, &call_med->tp);
if (status != PJ_SUCCESS)
goto on_error;
}
}
return PJ_SUCCESS;
on_error:
for (i=0; i < pjsua_var.ua_cfg.max_calls; ++i) {
pjsua_call *call = &pjsua_var.calls[i];
unsigned strm_idx;
for (strm_idx=0; strm_idx < call->med_cnt; ++strm_idx) {
pjsua_call_media *call_med = &call->media[strm_idx];
if (call_med->tp) {
pjmedia_transport_close(call_med->tp);
call_med->tp = NULL;
}
}
}
return status;
}
#endif
static void med_tp_timer_cb(void *user_data)
{
pjsua_call_media *call_med = (pjsua_call_media*)user_data;
pjsua_call *call = NULL;
pjsip_dialog *dlg = NULL;
acquire_call("med_tp_timer_cb", call_med->call->index, &call, &dlg);
call_med->tp_ready = call_med->tp_result;
if (call_med->med_create_cb)
(*call_med->med_create_cb)(call_med, call_med->tp_ready,
call_med->call->secure_level, NULL);
if (dlg)
pjsip_dlg_dec_lock(dlg);
}
/* 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)
{
pjsua_call_media *call_med = (pjsua_call_media*)tp->user_data;
if (!call_med)
return;
switch (op) {
case PJ_ICE_STRANS_OP_INIT:
call_med->tp_result = result;
pjsua_schedule_timer2(&med_tp_timer_cb, call_med, 1);
break;
case PJ_ICE_STRANS_OP_NEGOTIATION:
if (result != PJ_SUCCESS) {
call_med->state = PJSUA_CALL_MEDIA_ERROR;
call_med->dir = PJMEDIA_DIR_NONE;
if (call_med->call && pjsua_var.ua_cfg.cb.on_call_media_state) {
pjsua_var.ua_cfg.cb.on_call_media_state(call_med->call->index);
}
} else if (call_med->call) {
/* Send UPDATE if default transport address is different than
* what was advertised (ticket #881)
*/
pjmedia_transport_info tpinfo;
pjmedia_ice_transport_info *ii = NULL;
unsigned i;
pjmedia_transport_info_init(&tpinfo);
pjmedia_transport_get_info(tp, &tpinfo);
for (i=0; i<tpinfo.specific_info_cnt; ++i) {
if (tpinfo.spc_info[i].type==PJMEDIA_TRANSPORT_TYPE_ICE) {
ii = (pjmedia_ice_transport_info*)
tpinfo.spc_info[i].buffer;
break;
}
}
if (ii && ii->role==PJ_ICE_SESS_ROLE_CONTROLLING &&
pj_sockaddr_cmp(&tpinfo.sock_info.rtp_addr_name,
&call_med->rtp_addr))
{
pj_bool_t use_update;
const pj_str_t STR_UPDATE = { "UPDATE", 6 };
pjsip_dialog_cap_status support_update;
pjsip_dialog *dlg;
dlg = call_med->call->inv->dlg;
support_update = pjsip_dlg_remote_has_cap(dlg, PJSIP_H_ALLOW,
NULL, &STR_UPDATE);
use_update = (support_update == PJSIP_DIALOG_CAP_SUPPORTED);
PJ_LOG(4,(THIS_FILE,
"ICE default transport address has changed for "
"call %d, sending %s",
call_med->call->index,
(use_update ? "UPDATE" : "re-INVITE")));
if (use_update)
pjsua_call_update(call_med->call->index, 0, NULL);
else
pjsua_call_reinvite(call_med->call->index, 0, NULL);
}
}
break;
case PJ_ICE_STRANS_OP_KEEP_ALIVE:
if (result != PJ_SUCCESS) {
PJ_PERROR(4,(THIS_FILE, result,
"ICE keep alive failure for transport %d:%d",
call_med->call->index, call_med->idx));
}
if (pjsua_var.ua_cfg.cb.on_call_media_transport_state) {
pjsua_med_tp_state_info info;
pj_bzero(&info, sizeof(info));
info.med_idx = call_med->idx;
info.state = call_med->tp_st;
info.status = result;
info.ext_info = &op;
(*pjsua_var.ua_cfg.cb.on_call_media_transport_state)(
call_med->call->index, &info);
}
if (pjsua_var.ua_cfg.cb.on_ice_transport_error) {
pjsua_call_id id = call_med->call->index;
(*pjsua_var.ua_cfg.cb.on_ice_transport_error)(id, op, result,
NULL);
}
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_transport(
const pjsua_transport_config *cfg,
pjsua_call_media *call_med,
pj_bool_t async)
{
char stunip[PJ_INET6_ADDRSTRLEN];
pj_ice_strans_cfg ice_cfg;
pjmedia_ice_cb ice_cb;
char name[32];
unsigned comp_cnt;
pj_status_t status;
/* Make sure STUN server resolution has completed */
status = 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;
ice_cfg.opt = pjsua_var.media_cfg.ice_opt;
/* 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);
}
if (pjsua_var.media_cfg.ice_max_host_cands >= 0)
ice_cfg.stun.max_host_cands = pjsua_var.media_cfg.ice_max_host_cands;
/* Copy QoS setting to STUN setting */
ice_cfg.stun.cfg.qos_type = cfg->qos_type;
pj_memcpy(&ice_cfg.stun.cfg.qos_params, &cfg->qos_params,
sizeof(cfg->qos_params));
/* 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));
/* Copy QoS setting to TURN setting */
ice_cfg.turn.cfg.qos_type = cfg->qos_type;
pj_memcpy(&ice_cfg.turn.cfg.qos_params, &cfg->qos_params,
sizeof(cfg->qos_params));
}
pj_bzero(&ice_cb, sizeof(pjmedia_ice_cb));
ice_cb.on_ice_complete = &on_ice_complete;
pj_ansi_snprintf(name, sizeof(name), "icetp%02d", call_med->idx);
call_med->tp_ready = PJ_EPENDING;
comp_cnt = 1;
if (PJMEDIA_ADVERTISE_RTCP && !pjsua_var.media_cfg.ice_no_rtcp)
++comp_cnt;
status = pjmedia_ice_create3(pjsua_var.med_endpt, name, comp_cnt,
&ice_cfg, &ice_cb, 0, call_med,
&call_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 */
if (!async) {
pj_bool_t has_pjsua_lock = PJSUA_LOCK_IS_LOCKED();
if (has_pjsua_lock)
PJSUA_UNLOCK();
while (call_med->tp_ready == PJ_EPENDING) {
pjsua_handle_events(100);
}
if (has_pjsua_lock)
PJSUA_LOCK();
}
if (async && call_med->tp_ready == PJ_EPENDING) {
return PJ_EPENDING;
} else if (call_med->tp_ready != PJ_SUCCESS) {
pjsua_perror(THIS_FILE, "Error initializing ICE media transport",
call_med->tp_ready);
status = call_med->tp_ready;
goto on_error;
}
pjmedia_transport_simulate_lost(call_med->tp, PJMEDIA_DIR_ENCODING,
pjsua_var.media_cfg.tx_drop_pct);
pjmedia_transport_simulate_lost(call_med->tp, PJMEDIA_DIR_DECODING,
pjsua_var.media_cfg.rx_drop_pct);
return PJ_SUCCESS;
on_error:
if (call_med->tp != NULL) {
pjmedia_transport_close(call_med->tp);
call_med->tp = NULL;
}
return status;
}
#if DISABLED_FOR_TICKET_1185
/* Create ICE media transports (when ice is enabled) */
static pj_status_t create_ice_media_transports(pjsua_transport_config *cfg)
{
unsigned i;
pj_status_t status;
for (i=0; i < pjsua_var.ua_cfg.max_calls; ++i) {
pjsua_call *call = &pjsua_var.calls[i];
unsigned strm_idx;
for (strm_idx=0; strm_idx < call->med_cnt; ++strm_idx) {
pjsua_call_media *call_med = &call->media[strm_idx];
status = create_ice_media_transport(cfg, call_med);
if (status != PJ_SUCCESS)
goto on_error;
}
}
return PJ_SUCCESS;
on_error:
for (i=0; i < pjsua_var.ua_cfg.max_calls; ++i) {
pjsua_call *call = &pjsua_var.calls[i];
unsigned strm_idx;
for (strm_idx=0; strm_idx < call->med_cnt; ++strm_idx) {
pjsua_call_media *call_med = &call->media[strm_idx];
if (call_med->tp) {
pjmedia_transport_close(call_med->tp);
call_med->tp = NULL;
}
}
}
return status;
}
#endif
#if DISABLED_FOR_TICKET_1185
/*
* Create 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) {
pjsua_call *call = &pjsua_var.calls[i];
unsigned strm_idx;
for (strm_idx=0; strm_idx < call->med_cnt; ++strm_idx) {
pjsua_call_media *call_med = &call->media[strm_idx];
if (call_med->tp && call_med->tp_auto_del) {
pjmedia_transport_close(call_med->tp);
call_med->tp = NULL;
call_med->tp_orig = NULL;
}
}
}
/* Copy config */
pjsua_transport_config_dup(pjsua_var.pool, &cfg, app_cfg);
/* Create the transports */
if (pjsua_var.media_cfg.enable_ice) {
status = create_ice_media_transports(&cfg);
} else {
status = create_udp_media_transports(&cfg);
}
/* Set media transport auto_delete to True */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
pjsua_call *call = &pjsua_var.calls[i];
unsigned strm_idx;
for (strm_idx=0; strm_idx < call->med_cnt; ++strm_idx) {
pjsua_call_media *call_med = &call->media[strm_idx];
call_med->tp_auto_del = PJ_TRUE;
}
}
PJSUA_UNLOCK();
return status;
}
/*
* Attach application's created media transports.
*/
PJ_DEF(pj_status_t) pjsua_media_transports_attach(pjsua_media_transport tp[],
unsigned count,
pj_bool_t auto_delete)
{
unsigned i;
PJ_ASSERT_RETURN(tp && count==pjsua_var.ua_cfg.max_calls, PJ_EINVAL);
/* Assign the media transports */
for (i=0; i<pjsua_var.ua_cfg.max_calls; ++i) {
pjsua_call *call = &pjsua_var.calls[i];
unsigned strm_idx;
for (strm_idx=0; strm_idx < call->med_cnt; ++strm_idx) {
pjsua_call_media *call_med = &call->media[strm_idx];
if (call_med->tp && call_med->tp_auto_del) {
pjmedia_transport_close(call_med->tp);
call_med->tp = NULL;
call_med->tp_orig = NULL;
}
}
PJ_TODO(remove_pjsua_media_transports_attach);
call->media[0].tp = tp[i].transport;
call->media[0].tp_auto_del = auto_delete;
}
return PJ_SUCCESS;
}
#endif
/* Go through the list of media in the SDP, find acceptable media, and
* sort them based on the "quality" of the media, and store the indexes
* in the specified array. Media with the best quality will be listed
* first in the array. The quality factors considered currently is
* encryption.
*/
static void sort_media(const pjmedia_sdp_session *sdp,
const pj_str_t *type,
pjmedia_srtp_use use_srtp,
pj_uint8_t midx[],
unsigned *p_count,
unsigned *p_total_count)
{
unsigned i;
unsigned count = 0;
int score[PJSUA_MAX_CALL_MEDIA];
pj_assert(*p_count >= PJSUA_MAX_CALL_MEDIA);
pj_assert(*p_total_count >= PJSUA_MAX_CALL_MEDIA);
*p_count = 0;
*p_total_count = 0;
for (i=0; i<PJSUA_MAX_CALL_MEDIA; ++i)
score[i] = 1;
/* Score each media */
for (i=0; i<sdp->media_count && count<PJSUA_MAX_CALL_MEDIA; ++i) {
const pjmedia_sdp_media *m = sdp->media[i];
const pjmedia_sdp_conn *c;
/* Skip different media */
if (pj_stricmp(&m->desc.media, type) != 0) {
score[count++] = -22000;
continue;
}
c = m->conn? m->conn : sdp->conn;
/* Supported transports */
if (pj_stricmp2(&m->desc.transport, "RTP/SAVP")==0) {
switch (use_srtp) {
case PJMEDIA_SRTP_MANDATORY:
case PJMEDIA_SRTP_OPTIONAL:
++score[i];
break;
case PJMEDIA_SRTP_DISABLED:
//--score[i];
score[i] -= 5;
break;
}
} else if (pj_stricmp2(&m->desc.transport, "RTP/AVP")==0) {
switch (use_srtp) {
case PJMEDIA_SRTP_MANDATORY:
//--score[i];
score[i] -= 5;
break;
case PJMEDIA_SRTP_OPTIONAL:
/* No change in score */
break;
case PJMEDIA_SRTP_DISABLED:
++score[i];
break;
}
} else {
score[i] -= 10;
}
/* Is media disabled? */
if (m->desc.port == 0)
score[i] -= 10;
/* Is media inactive? */
if (pjmedia_sdp_media_find_attr2(m, "inactive", NULL) ||
pj_strcmp2(&c->addr, "0.0.0.0") == 0)
{
//score[i] -= 10;
score[i] -= 1;
}
++count;
}
/* Created sorted list based on quality */
for (i=0; i<count; ++i) {
unsigned j;
int best = 0;
for (j=1; j<count; ++j) {
if (score[j] > score[best])
best = j;
}
/* Don't put media with negative score, that media is unacceptable
* for us.
*/
midx[i] = (pj_uint8_t)best;
if (score[best] >= 0)
(*p_count)++;
if (score[best] > -22000)
(*p_total_count)++;
score[best] = -22000;
}
}
/* Callback to receive media events */
pj_status_t call_media_on_event(pjmedia_event *event,
void *user_data)
{
pjsua_call_media *call_med = (pjsua_call_media*)user_data;
pjsua_call *call = call_med->call;
pj_status_t status = PJ_SUCCESS;
switch(event->type) {
case PJMEDIA_EVENT_KEYFRAME_MISSING:
if (call->opt.req_keyframe_method & PJSUA_VID_REQ_KEYFRAME_SIP_INFO)
{
pj_timestamp now;
pj_get_timestamp(&now);
if (pj_elapsed_msec(&call_med->last_req_keyframe, &now) >=
PJSUA_VID_REQ_KEYFRAME_INTERVAL)
{
pjsua_msg_data msg_data;
const pj_str_t SIP_INFO = {"INFO", 4};
const char *BODY_TYPE = "application/media_control+xml";
const char *BODY =
"<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
"<media_control><vc_primitive><to_encoder>"
"<picture_fast_update/>"
"</to_encoder></vc_primitive></media_control>";
PJ_LOG(4,(THIS_FILE,
"Sending video keyframe request via SIP INFO"));
pjsua_msg_data_init(&msg_data);
pj_cstr(&msg_data.content_type, BODY_TYPE);
pj_cstr(&msg_data.msg_body, BODY);
status = pjsua_call_send_request(call->index, &SIP_INFO,
&msg_data);
if (status != PJ_SUCCESS) {
pj_perror(3, THIS_FILE, status,
"Failed requesting keyframe via SIP INFO");
} else {
call_med->last_req_keyframe = now;
}
}
}
break;
default:
break;
}
if (pjsua_var.ua_cfg.cb.on_call_media_event && call) {
(*pjsua_var.ua_cfg.cb.on_call_media_event)(call->index,
call_med->idx, event);
}
return status;
}
/* Set media transport state and notify the application via the callback. */
void pjsua_set_media_tp_state(pjsua_call_media *call_med,
pjsua_med_tp_st tp_st)
{
if (pjsua_var.ua_cfg.cb.on_call_media_transport_state &&
call_med->tp_st != tp_st)
{
pjsua_med_tp_state_info info;
pj_bzero(&info, sizeof(info));
info.med_idx = call_med->idx;
info.state = tp_st;
info.status = call_med->tp_ready;
(*pjsua_var.ua_cfg.cb.on_call_media_transport_state)(
call_med->call->index, &info);
}
call_med->tp_st = tp_st;
}
/* Callback to resume pjsua_call_media_init() after media transport
* creation is completed.
*/
static pj_status_t call_media_init_cb(pjsua_call_media *call_med,
pj_status_t status,
int security_level,
int *sip_err_code)
{
pjsua_acc *acc = &pjsua_var.acc[call_med->call->acc_id];
pjmedia_transport_info tpinfo;
int err_code = 0;
if (status != PJ_SUCCESS)
goto on_return;
pjmedia_transport_simulate_lost(call_med->tp, PJMEDIA_DIR_ENCODING,
pjsua_var.media_cfg.tx_drop_pct);
pjmedia_transport_simulate_lost(call_med->tp, PJMEDIA_DIR_DECODING,
pjsua_var.media_cfg.rx_drop_pct);
if (call_med->tp_st == PJSUA_MED_TP_CREATING)
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_IDLE);
if (!call_med->tp_orig &&
pjsua_var.ua_cfg.cb.on_create_media_transport)
{
call_med->use_custom_med_tp = PJ_TRUE;
} else
call_med->use_custom_med_tp = PJ_FALSE;
#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->tp_orig) {
pjmedia_srtp_setting srtp_opt;
pjmedia_transport *srtp = NULL;
/* Check if SRTP requires secure signaling */
if (acc->cfg.use_srtp != PJMEDIA_SRTP_DISABLED) {
if (security_level < acc->cfg.srtp_secure_signaling) {
err_code = PJSIP_SC_NOT_ACCEPTABLE;
status = PJSIP_ESESSIONINSECURE;
goto on_return;
}
}
/* Always create SRTP adapter */
pjmedia_srtp_setting_default(&srtp_opt);
srtp_opt.close_member_tp = PJ_TRUE;
/* If media session has been ever established, let's use remote's
* preference in SRTP usage policy, especially when it is stricter.
*/
if (call_med->rem_srtp_use > acc->cfg.use_srtp)
srtp_opt.use = call_med->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) {
err_code = PJSIP_SC_INTERNAL_SERVER_ERROR;
goto on_return;
}
/* Set SRTP as current media transport */
call_med->tp_orig = call_med->tp;
call_med->tp = srtp;
}
#else
call_med->tp_orig = call_med->tp;
PJ_UNUSED_ARG(security_level);
#endif
pjmedia_transport_info_init(&tpinfo);
pjmedia_transport_get_info(call_med->tp, &tpinfo);
pj_sockaddr_cp(&call_med->rtp_addr, &tpinfo.sock_info.rtp_addr_name);
on_return:
if (status != PJ_SUCCESS && call_med->tp) {
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_NULL);
pjmedia_transport_close(call_med->tp);
call_med->tp = NULL;
}
if (sip_err_code)
*sip_err_code = err_code;
if (call_med->med_init_cb) {
pjsua_med_tp_state_info info;
pj_bzero(&info, sizeof(info));
info.status = status;
info.state = call_med->tp_st;
info.med_idx = call_med->idx;
info.sip_err_code = err_code;
(*call_med->med_init_cb)(call_med->call->index, &info);
}
return status;
}
/* Initialize the media line */
pj_status_t pjsua_call_media_init(pjsua_call_media *call_med,
pjmedia_type type,
const pjsua_transport_config *tcfg,
int security_level,
int *sip_err_code,
pj_bool_t async,
pjsua_med_tp_state_cb cb)
{
pj_status_t status = PJ_SUCCESS;
/*
* Note: this function may be called when the media already exists
* (e.g. in reinvites, updates, etc.)
*/
call_med->type = type;
/* Create the media transport for initial call. Here are the possible
* media transport state and the action needed:
* - PJSUA_MED_TP_NULL or call_med->tp==NULL, create one.
* - PJSUA_MED_TP_RUNNING, do nothing.
* - PJSUA_MED_TP_DISABLED, re-init (media_create(), etc). Currently,
* this won't happen as media_channel_update() will always clean up
* the unused transport of a disabled media.
*/
if (call_med->tp == NULL) {
#if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0)
/* While in initial call, set default video devices */
if (type == PJMEDIA_TYPE_VIDEO) {
status = pjsua_vid_channel_init(call_med);
if (status != PJ_SUCCESS)
return status;
}
#endif
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_CREATING);
if (pjsua_var.media_cfg.enable_ice) {
status = create_ice_media_transport(tcfg, call_med, async);
if (async && status == PJ_EPENDING) {
/* We will resume call media initialization in the
* on_ice_complete() callback.
*/
call_med->med_create_cb = &call_media_init_cb;
call_med->med_init_cb = cb;
return PJ_EPENDING;
}
} else {
status = create_udp_media_transport(tcfg, call_med);
}
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status, "Error creating media transport"));
return status;
}
/* Media transport creation completed immediately, so
* we don't need to call the callback.
*/
call_med->med_init_cb = NULL;
} else if (call_med->tp_st == PJSUA_MED_TP_DISABLED) {
/* Media is being reenabled. */
//pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_IDLE);
pj_assert(!"Currently no media transport reuse");
}
return call_media_init_cb(call_med, status, security_level,
sip_err_code);
}
/* Callback to resume pjsua_media_channel_init() after media transport
* initialization is completed.
*/
static pj_status_t media_channel_init_cb(pjsua_call_id call_id,
const pjsua_med_tp_state_info *info)
{
pjsua_call *call = &pjsua_var.calls[call_id];
pj_status_t status = (info? info->status : PJ_SUCCESS);
unsigned mi;
if (info) {
pj_mutex_lock(call->med_ch_mutex);
/* Set the callback to NULL to indicate that the async operation
* has completed.
*/
call->media_prov[info->med_idx].med_init_cb = NULL;
/* In case of failure, save the information to be returned
* by the last media transport to finish.
*/
if (info->status != PJ_SUCCESS)
pj_memcpy(&call->med_ch_info, info, sizeof(info));
/* Check whether all the call's medias have finished calling their
* callbacks.
*/
for (mi=0; mi < call->med_prov_cnt; ++mi) {
pjsua_call_media *call_med = &call->media_prov[mi];
if (call_med->med_init_cb) {
pj_mutex_unlock(call->med_ch_mutex);
return PJ_SUCCESS;
}
if (call_med->tp_ready != PJ_SUCCESS)
status = call_med->tp_ready;
}
/* OK, we are called by the last media transport finished. */
pj_mutex_unlock(call->med_ch_mutex);
}
if (call->med_ch_mutex) {
pj_mutex_destroy(call->med_ch_mutex);
call->med_ch_mutex = NULL;
}
if (status != PJ_SUCCESS) {
if (call->med_ch_info.status == PJ_SUCCESS) {
call->med_ch_info.status = status;
call->med_ch_info.sip_err_code = PJSIP_SC_TEMPORARILY_UNAVAILABLE;
}
pjsua_media_prov_clean_up(call_id);
goto on_return;
}
/* Tell the media transport of a new offer/answer session */
for (mi=0; mi < call->med_prov_cnt; ++mi) {
pjsua_call_media *call_med = &call->media_prov[mi];
/* Note: tp may be NULL if this media line is disabled */
if (call_med->tp && call_med->tp_st == PJSUA_MED_TP_IDLE) {
pj_pool_t *tmp_pool = call->async_call.pool_prov;
if (!tmp_pool) {
tmp_pool = (call->inv? call->inv->pool_prov:
call->async_call.dlg->pool);
}
if (call_med->use_custom_med_tp) {
unsigned custom_med_tp_flags = 0;
/* Use custom media transport returned by the application */
call_med->tp =
(*pjsua_var.ua_cfg.cb.on_create_media_transport)
(call_id, mi, call_med->tp,
custom_med_tp_flags);
if (!call_med->tp) {
status =
PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_TEMPORARILY_UNAVAILABLE);
}
}
if (call_med->tp) {
status = pjmedia_transport_media_create(
call_med->tp, tmp_pool,
0, call->async_call.rem_sdp, mi);
}
if (status != PJ_SUCCESS) {
call->med_ch_info.status = status;
call->med_ch_info.med_idx = mi;
call->med_ch_info.state = call_med->tp_st;
call->med_ch_info.sip_err_code = PJSIP_SC_TEMPORARILY_UNAVAILABLE;
pjsua_media_prov_clean_up(call_id);
goto on_return;
}
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_INIT);
}
}
call->med_ch_info.status = PJ_SUCCESS;
on_return:
if (call->med_ch_cb)
(*call->med_ch_cb)(call->index, &call->med_ch_info);
return status;
}
/* Clean up media transports in provisional media that is not used
* by call media.
*/
void pjsua_media_prov_clean_up(pjsua_call_id call_id)
{
pjsua_call *call = &pjsua_var.calls[call_id];
unsigned i;
for (i = 0; i < call->med_prov_cnt; ++i) {
pjsua_call_media *call_med = &call->media_prov[i];
unsigned j;
pj_bool_t used = PJ_FALSE;
if (call_med->tp == NULL)
continue;
for (j = 0; j < call->med_cnt; ++j) {
if (call->media[j].tp == call_med->tp) {
used = PJ_TRUE;
break;
}
}
if (!used) {
if (call_med->tp_st > PJSUA_MED_TP_IDLE) {
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_IDLE);
pjmedia_transport_media_stop(call_med->tp);
}
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_NULL);
pjmedia_transport_close(call_med->tp);
call_med->tp = call_med->tp_orig = NULL;
}
}
}
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,
pj_bool_t async,
pjsua_med_tp_state_cb cb)
{
const pj_str_t STR_AUDIO = { "audio", 5 };
const pj_str_t STR_VIDEO = { "video", 5 };
pjsua_call *call = &pjsua_var.calls[call_id];
pjsua_acc *acc = &pjsua_var.acc[call->acc_id];
pj_uint8_t maudidx[PJSUA_MAX_CALL_MEDIA];
unsigned maudcnt = PJ_ARRAY_SIZE(maudidx);
unsigned mtotaudcnt = PJ_ARRAY_SIZE(maudidx);
pj_uint8_t mvididx[PJSUA_MAX_CALL_MEDIA];
unsigned mvidcnt = PJ_ARRAY_SIZE(mvididx);
unsigned mtotvidcnt = PJ_ARRAY_SIZE(mvididx);
unsigned mi;
pj_bool_t pending_med_tp = PJ_FALSE;
pj_bool_t reinit = PJ_FALSE;
pj_status_t status;
PJ_UNUSED_ARG(role);
/*
* Note: this function may be called when the media already exists
* (e.g. in reinvites, updates, etc).
*/
if (pjsua_get_state() != PJSUA_STATE_RUNNING)
return PJ_EBUSY;
if (async) {
pj_pool_t *tmppool = (call->inv? call->inv->pool_prov:
call->async_call.dlg->pool);
status = pj_mutex_create_simple(tmppool, NULL, &call->med_ch_mutex);
if (status != PJ_SUCCESS)
return status;
}
if (call->inv && call->inv->state == PJSIP_INV_STATE_CONFIRMED)
reinit = PJ_TRUE;
PJ_LOG(4,(THIS_FILE, "Call %d: %sinitializing media..",
call_id, (reinit?"re-":"") ));
pj_log_push_indent();
/* Init provisional media state */
if (call->med_cnt == 0) {
/* New media session, just copy whole from call media state. */
pj_memcpy(call->media_prov, call->media, sizeof(call->media));
} else {
/* Clean up any unused transports. Note that when local SDP reoffer
* is rejected by remote, there may be any initialized transports that
* are not used by call media and currently there is no notification
* from PJSIP level regarding the reoffer rejection.
*/
pjsua_media_prov_clean_up(call_id);
/* Updating media session, copy from call media state. */
pj_memcpy(call->media_prov, call->media,
sizeof(call->media[0]) * call->med_cnt);
}
call->med_prov_cnt = call->med_cnt;
#if DISABLED_FOR_TICKET_1185
/* Return error if media transport has not been created yet
* (e.g. application is starting)
*/
for (i=0; i<call->med_cnt; ++i) {
if (call->media[i].tp == NULL) {
status = PJ_EBUSY;
goto on_error;
}
}
#endif
/* Get media count for each media type */
if (rem_sdp) {
sort_media(rem_sdp, &STR_AUDIO, acc->cfg.use_srtp,
maudidx, &maudcnt, &mtotaudcnt);
if (maudcnt==0) {
/* Expecting audio in the offer */
if (sip_err_code) *sip_err_code = PJSIP_SC_NOT_ACCEPTABLE_HERE;
status = PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_NOT_ACCEPTABLE_HERE);
goto on_error;
}
#if PJMEDIA_HAS_VIDEO
sort_media(rem_sdp, &STR_VIDEO, acc->cfg.use_srtp,
mvididx, &mvidcnt, &mtotvidcnt);
#else
mvidcnt = mtotvidcnt = 0;
PJ_UNUSED_ARG(STR_VIDEO);
#endif
/* Update media count only when remote add any media, this media count
* must never decrease. Also note that we shouldn't apply the media
* count setting (of the call setting) before the SDP negotiation.
*/
if (call->med_prov_cnt < rem_sdp->media_count)
call->med_prov_cnt = PJ_MIN(rem_sdp->media_count,
PJSUA_MAX_CALL_MEDIA);
call->rem_offerer = PJ_TRUE;
call->rem_aud_cnt = maudcnt;
call->rem_vid_cnt = mvidcnt;
} else {
/* If call already established, calculate media count from current
* local active SDP and call setting. Otherwise, calculate media
* count from the call setting only.
*/
if (reinit) {
const pjmedia_sdp_session *sdp;
status = pjmedia_sdp_neg_get_active_local(call->inv->neg, &sdp);
pj_assert(status == PJ_SUCCESS);
sort_media(sdp, &STR_AUDIO, acc->cfg.use_srtp,
maudidx, &maudcnt, &mtotaudcnt);
pj_assert(maudcnt > 0);
sort_media(sdp, &STR_VIDEO, acc->cfg.use_srtp,
mvididx, &mvidcnt, &mtotvidcnt);
/* Call setting may add or remove media. Adding media is done by
* enabling any disabled/port-zeroed media first, then adding new
* media whenever needed. Removing media is done by disabling
* media with the lowest 'quality'.
*/
/* Check if we need to add new audio */
if (maudcnt < call->opt.aud_cnt &&
mtotaudcnt < call->opt.aud_cnt)
{
for (mi = 0; mi < call->opt.aud_cnt - mtotaudcnt; ++mi)
maudidx[maudcnt++] = (pj_uint8_t)call->med_prov_cnt++;
mtotaudcnt = call->opt.aud_cnt;
}
maudcnt = call->opt.aud_cnt;
/* Check if we need to add new video */
if (mvidcnt < call->opt.vid_cnt &&
mtotvidcnt < call->opt.vid_cnt)
{
for (mi = 0; mi < call->opt.vid_cnt - mtotvidcnt; ++mi)
mvididx[mvidcnt++] = (pj_uint8_t)call->med_prov_cnt++;
mtotvidcnt = call->opt.vid_cnt;
}
mvidcnt = call->opt.vid_cnt;
} else {
maudcnt = mtotaudcnt = call->opt.aud_cnt;
for (mi=0; mi<maudcnt; ++mi) {
maudidx[mi] = (pj_uint8_t)mi;
}
mvidcnt = mtotvidcnt = call->opt.vid_cnt;
for (mi=0; mi<mvidcnt; ++mi) {
mvididx[mi] = (pj_uint8_t)(maudcnt + mi);
}
call->med_prov_cnt = maudcnt + mvidcnt;
/* Need to publish supported media? */
if (call->opt.flag & PJSUA_CALL_INCLUDE_DISABLED_MEDIA) {
if (mtotaudcnt == 0) {
mtotaudcnt = 1;
maudidx[0] = (pj_uint8_t)call->med_prov_cnt++;
}
#if PJMEDIA_HAS_VIDEO
if (mtotvidcnt == 0) {
mtotvidcnt = 1;
mvididx[0] = (pj_uint8_t)call->med_prov_cnt++;
}
#endif
}
}
call->rem_offerer = PJ_FALSE;
}
if (call->med_prov_cnt == 0) {
/* Expecting at least one media */
if (sip_err_code) *sip_err_code = PJSIP_SC_NOT_ACCEPTABLE_HERE;
status = PJSIP_ERRNO_FROM_SIP_STATUS(PJSIP_SC_NOT_ACCEPTABLE_HERE);
goto on_error;
}
if (async) {
call->med_ch_cb = cb;
}
if (rem_sdp) {
call->async_call.rem_sdp =
pjmedia_sdp_session_clone(call->inv->pool_prov, rem_sdp);
} else {
call->async_call.rem_sdp = NULL;
}
call->async_call.pool_prov = tmp_pool;
/* Initialize each media line */
for (mi=0; mi < call->med_prov_cnt; ++mi) {
pjsua_call_media *call_med = &call->media_prov[mi];
pj_bool_t enabled = PJ_FALSE;
pjmedia_type media_type = PJMEDIA_TYPE_UNKNOWN;
if (pj_memchr(maudidx, mi, mtotaudcnt * sizeof(maudidx[0]))) {
media_type = PJMEDIA_TYPE_AUDIO;
if (call->opt.aud_cnt &&
pj_memchr(maudidx, mi, maudcnt * sizeof(maudidx[0])))
{
enabled = PJ_TRUE;
}
} else if (pj_memchr(mvididx, mi, mtotvidcnt * sizeof(mvididx[0]))) {
media_type = PJMEDIA_TYPE_VIDEO;
if (call->opt.vid_cnt &&
pj_memchr(mvididx, mi, mvidcnt * sizeof(mvididx[0])))
{
enabled = PJ_TRUE;
}
}
if (enabled) {
status = pjsua_call_media_init(call_med, media_type,
&acc->cfg.rtp_cfg,
security_level, sip_err_code,
async,
(async? &media_channel_init_cb:
NULL));
if (status == PJ_EPENDING) {
pending_med_tp = PJ_TRUE;
} else if (status != PJ_SUCCESS) {
if (pending_med_tp) {
/* Save failure information. */
call_med->tp_ready = status;
pj_bzero(&call->med_ch_info, sizeof(call->med_ch_info));
call->med_ch_info.status = status;
call->med_ch_info.state = call_med->tp_st;
call->med_ch_info.med_idx = call_med->idx;
if (sip_err_code)
call->med_ch_info.sip_err_code = *sip_err_code;
/* We will return failure in the callback later. */
return PJ_EPENDING;
}
pjsua_media_prov_clean_up(call_id);
goto on_error;
}
} else {
/* By convention, the media is disabled if transport is NULL
* or transport state is PJSUA_MED_TP_DISABLED.
*/
if (call_med->tp) {
// Don't close transport here, as SDP negotiation has not been
// done and stream may be still active. Once SDP negotiation
// is done (channel_update() invoked), this transport will be
// closed there.
//pjmedia_transport_close(call_med->tp);
//call_med->tp = NULL;
pj_assert(call_med->tp_st == PJSUA_MED_TP_INIT ||
call_med->tp_st == PJSUA_MED_TP_RUNNING);
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_DISABLED);
}
/* Put media type just for info */
call_med->type = media_type;
}
}
call->audio_idx = maudidx[0];
PJ_LOG(4,(THIS_FILE, "Media index %d selected for audio call %d",
call->audio_idx, call->index));
if (pending_med_tp) {
/* We shouldn't use temporary pool anymore. */
call->async_call.pool_prov = NULL;
/* We have a pending media transport initialization. */
pj_log_pop_indent();
return PJ_EPENDING;
}
/* Media transport initialization completed immediately, so
* we don't need to call the callback.
*/
call->med_ch_cb = NULL;
status = media_channel_init_cb(call_id, NULL);
if (status != PJ_SUCCESS && sip_err_code)
*sip_err_code = call->med_ch_info.sip_err_code;
pj_log_pop_indent();
return status;
on_error:
if (call->med_ch_mutex) {
pj_mutex_destroy(call->med_ch_mutex);
call->med_ch_mutex = NULL;
}
pj_log_pop_indent();
return status;
}
/* Create SDP based on the current media channel. Note that, this function
* will not modify the media channel, so when receiving new offer or
* updating media count (via call setting), media channel must be reinit'd
* (using pjsua_media_channel_init()) first before calling this function.
*/
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_err_code)
{
enum { MAX_MEDIA = PJSUA_MAX_CALL_MEDIA };
pjmedia_sdp_session *sdp;
pj_sockaddr origin;
pjsua_call *call = &pjsua_var.calls[call_id];
pjmedia_sdp_neg_state sdp_neg_state = PJMEDIA_SDP_NEG_STATE_NULL;
unsigned mi;
unsigned tot_bandw_tias = 0;
pj_status_t status;
if (pjsua_get_state() != PJSUA_STATE_RUNNING)
return PJ_EBUSY;
#if 0
// This function should not really change the media channel.
if (rem_sdp) {
/* If this is a re-offer, let's re-initialize media as remote may
* add or remove media
*/
if (call->inv && call->inv->state == PJSIP_INV_STATE_CONFIRMED) {
status = pjsua_media_channel_init(call_id, PJSIP_ROLE_UAS,
call->secure_level, pool,
rem_sdp, sip_err_code,
PJ_FALSE, NULL);
if (status != PJ_SUCCESS)
return status;
}
} else {
/* Audio is first in our offer, by convention */
// The audio_idx should not be changed here, as this function may be
// called in generating re-offer and the current active audio index
// can be anywhere.
//call->audio_idx = 0;
}
#endif
#if 0
// Since r3512, old-style hold should have got transport, created by
// pjsua_media_channel_init() in initial offer/answer or remote reoffer.
/* Create media if it's not created. This could happen when call is
* currently on-hold (with the old style hold)
*/
if (call->media[call->audio_idx].tp == NULL) {
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_err_code);
if (status != PJ_SUCCESS)
return status;
}
#endif
/* Get SDP negotiator state */
if (call->inv && call->inv->neg)
sdp_neg_state = pjmedia_sdp_neg_get_state(call->inv->neg);
/* Get one address to use in the origin field */
pj_bzero(&origin, sizeof(origin));
for (mi=0; mi<call->med_prov_cnt; ++mi) {
pjmedia_transport_info tpinfo;
if (call->media_prov[mi].tp == NULL)
continue;
pjmedia_transport_info_init(&tpinfo);
pjmedia_transport_get_info(call->media_prov[mi].tp, &tpinfo);
pj_sockaddr_cp(&origin, &tpinfo.sock_info.rtp_addr_name);
break;
}
/* Create the base (blank) SDP */
status = pjmedia_endpt_create_base_sdp(pjsua_var.med_endpt, pool, NULL,
&origin, &sdp);
if (status != PJ_SUCCESS)
return status;
/* Process each media line */
for (mi=0; mi<call->med_prov_cnt; ++mi) {
pjsua_call_media *call_med = &call->media_prov[mi];
pjmedia_sdp_media *m = NULL;
pjmedia_transport_info tpinfo;
unsigned i;
if (rem_sdp && mi >= rem_sdp->media_count) {
/* Remote might have removed some media lines. */
break;
}
if (call_med->tp == NULL || call_med->tp_st == PJSUA_MED_TP_DISABLED)
{
/*
* This media is disabled. Just create a valid SDP with zero
* port.
*/
if (rem_sdp) {
/* Just clone the remote media and deactivate it */
m = pjmedia_sdp_media_clone_deactivate(pool,
rem_sdp->media[mi]);
} else {
m = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_media);
m->desc.transport = pj_str("RTP/AVP");
m->desc.fmt_count = 1;
m->conn = PJ_POOL_ZALLOC_T(pool, pjmedia_sdp_conn);
m->conn->net_type = pj_str("IN");
m->conn->addr_type = pj_str("IP4");
m->conn->addr = pj_str("127.0.0.1");
switch (call_med->type) {
case PJMEDIA_TYPE_AUDIO:
m->desc.media = pj_str("audio");
m->desc.fmt[0] = pj_str("0");
break;
case PJMEDIA_TYPE_VIDEO:
m->desc.media = pj_str("video");
m->desc.fmt[0] = pj_str("31");
break;
default:
/* This must be us generating re-offer, and some unknown
* media may exist, so just clone from active local SDP
* (and it should have been deactivated already).
*/
pj_assert(call->inv && call->inv->neg &&
sdp_neg_state == PJMEDIA_SDP_NEG_STATE_DONE);
{
const pjmedia_sdp_session *s_;
pjmedia_sdp_neg_get_active_local(call->inv->neg, &s_);
pj_assert(mi < s_->media_count);
m = pjmedia_sdp_media_clone(pool, s_->media[mi]);
m->desc.port = 0;
}
break;
}
}
sdp->media[sdp->media_count++] = m;
continue;
}
/* Get transport address info */
pjmedia_transport_info_init(&tpinfo);
pjmedia_transport_get_info(call_med->tp, &tpinfo);
/* Ask pjmedia endpoint to create SDP media line */
switch (call_med->type) {
case PJMEDIA_TYPE_AUDIO:
status = pjmedia_endpt_create_audio_sdp(pjsua_var.med_endpt, pool,
&tpinfo.sock_info, 0, &m);
break;
#if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0)
case PJMEDIA_TYPE_VIDEO:
status = pjmedia_endpt_create_video_sdp(pjsua_var.med_endpt, pool,
&tpinfo.sock_info, 0, &m);
break;
#endif
default:
pj_assert(!"Invalid call_med media type");
return PJ_EBUG;
}
if (status != PJ_SUCCESS)
return status;
sdp->media[sdp->media_count++] = m;
/* Give to transport */
status = pjmedia_transport_encode_sdp(call_med->tp, pool,
sdp, rem_sdp, mi);
if (status != PJ_SUCCESS) {
if (sip_err_code) *sip_err_code = PJSIP_SC_NOT_ACCEPTABLE;
return status;
}
/* Copy c= line of the first media to session level,
* if there's none.
*/
if (sdp->conn == NULL) {
sdp->conn = pjmedia_sdp_conn_clone(pool, m->conn);
}
/* Find media bandwidth info */
for (i = 0; i < m->bandw_count; ++i) {
const pj_str_t STR_BANDW_MODIFIER_TIAS = { "TIAS", 4 };
if (!pj_stricmp(&m->bandw[i]->modifier, &STR_BANDW_MODIFIER_TIAS))
{
tot_bandw_tias += m->bandw[i]->value;
break;
}
}
}
/* 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);
}
/* Add bandwidth info in session level using bandwidth modifier "AS". */
if (tot_bandw_tias) {
unsigned bandw;
const pj_str_t STR_BANDW_MODIFIER_AS = { "AS", 2 };
pjmedia_sdp_bandw *b;
/* AS bandwidth = RTP bitrate + RTCP bitrate.
* RTP bitrate = payload bitrate (total TIAS) + overheads (~16kbps).
* RTCP bitrate = est. 5% of RTP bitrate.
* Note that AS bandwidth is in kbps.
*/
bandw = tot_bandw_tias + 16000;
bandw += bandw * 5 / 100;
b = PJ_POOL_ALLOC_T(pool, pjmedia_sdp_bandw);
b->modifier = STR_BANDW_MODIFIER_AS;
b->value = bandw / 1000;
sdp->bandw[sdp->bandw_count++] = b;
}
#if DISABLED_FOR_TICKET_1185 && defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0)
/* Check if SRTP is in optional mode and configured to use duplicated
* media, i.e: secured and unsecured version, in the SDP offer.
*/
if (!rem_sdp &&
pjsua_var.acc[call->acc_id].cfg.use_srtp == PJMEDIA_SRTP_OPTIONAL &&
pjsua_var.acc[call->acc_id].cfg.srtp_optional_dup_offer)
{
unsigned i;
for (i = 0; i < sdp->media_count; ++i) {
pjmedia_sdp_media *m = sdp->media[i];
/* Check if this media is unsecured but has SDP "crypto"
* attribute.
*/
if (pj_stricmp2(&m->desc.transport, "RTP/AVP") == 0 &&
pjmedia_sdp_media_find_attr2(m, "crypto", NULL) != NULL)
{
if (i == (unsigned)call->audio_idx &&
sdp_neg_state == PJMEDIA_SDP_NEG_STATE_DONE)
{
/* This is a session update, and peer has chosen the
* unsecured version, so let's make this unsecured too.
*/
pjmedia_sdp_media_remove_all_attr(m, "crypto");
} else {
/* This is new offer, duplicate media so we'll have
* secured (with "RTP/SAVP" transport) and and unsecured
* versions.
*/
pjmedia_sdp_media *new_m;
/* Duplicate this media and apply secured transport */
new_m = pjmedia_sdp_media_clone(pool, m);
pj_strdup2(pool, &new_m->desc.transport, "RTP/SAVP");
/* Remove the "crypto" attribute in the unsecured media */
pjmedia_sdp_media_remove_all_attr(m, "crypto");
/* Insert the new media before the unsecured media */
if (sdp->media_count < PJMEDIA_MAX_SDP_MEDIA) {
pj_array_insert(sdp->media, sizeof(new_m),
sdp->media_count, i, &new_m);
++sdp->media_count;
++i;
}
}
}
}
}
#endif
call->rem_offerer = (rem_sdp != NULL);
/* Notify application */
if (pjsua_var.ua_cfg.cb.on_call_sdp_created) {
(*pjsua_var.ua_cfg.cb.on_call_sdp_created)(call_id, sdp,
pool, rem_sdp);
}
*p_sdp = sdp;
return PJ_SUCCESS;
}
static void stop_media_session(pjsua_call_id call_id)
{
pjsua_call *call = &pjsua_var.calls[call_id];
unsigned mi;
pj_log_push_indent();
for (mi=0; mi<call->med_cnt; ++mi) {
pjsua_call_media *call_med = &call->media[mi];
if (call_med->type == PJMEDIA_TYPE_AUDIO) {
pjsua_aud_stop_stream(call_med);
}
#if PJMEDIA_HAS_VIDEO
else if (call_med->type == PJMEDIA_TYPE_VIDEO) {
pjsua_vid_stop_stream(call_med);
}
#endif
PJ_LOG(4,(THIS_FILE, "Media session call%02d:%d is destroyed",
call_id, mi));
call_med->prev_state = call_med->state;
call_med->state = PJSUA_CALL_MEDIA_NONE;
/* Try to sync recent changes to provisional media */
if (mi<call->med_prov_cnt && call->media_prov[mi].tp==call_med->tp)
{
pjsua_call_media *prov_med = &call->media_prov[mi];
/* Media state */
prov_med->prev_state = call_med->prev_state;
prov_med->state = call_med->state;
/* RTP seq/ts */
prov_med->rtp_tx_seq_ts_set = call_med->rtp_tx_seq_ts_set;
prov_med->rtp_tx_seq = call_med->rtp_tx_seq;
prov_med->rtp_tx_ts = call_med->rtp_tx_ts;
/* Stream */
if (call_med->type == PJMEDIA_TYPE_AUDIO) {
prov_med->strm.a.conf_slot = call_med->strm.a.conf_slot;
prov_med->strm.a.stream = call_med->strm.a.stream;
}
#if PJMEDIA_HAS_VIDEO
else if (call_med->type == PJMEDIA_TYPE_VIDEO) {
prov_med->strm.v.cap_win_id = call_med->strm.v.cap_win_id;
prov_med->strm.v.rdr_win_id = call_med->strm.v.rdr_win_id;
prov_med->strm.v.stream = call_med->strm.v.stream;
}
#endif
}
}
pj_log_pop_indent();
}
pj_status_t pjsua_media_channel_deinit(pjsua_call_id call_id)
{
pjsua_call *call = &pjsua_var.calls[call_id];
unsigned mi;
for (mi=0; mi<call->med_cnt; ++mi) {
pjsua_call_media *call_med = &call->media[mi];
if (call_med->tp_st == PJSUA_MED_TP_CREATING) {
/* We will do the deinitialization after media transport
* creation is completed.
*/
call->async_call.med_ch_deinit = PJ_TRUE;
return PJ_SUCCESS;
}
}
PJ_LOG(4,(THIS_FILE, "Call %d: deinitializing media..", call_id));
pj_log_push_indent();
stop_media_session(call_id);
/* Clean up media transports */
pjsua_media_prov_clean_up(call_id);
call->med_prov_cnt = 0;
for (mi=0; mi<call->med_cnt; ++mi) {
pjsua_call_media *call_med = &call->media[mi];
if (call_med->tp_st > PJSUA_MED_TP_IDLE) {
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_IDLE);
pjmedia_transport_media_stop(call_med->tp);
}
if (call_med->tp) {
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_NULL);
pjmedia_transport_close(call_med->tp);
call_med->tp = call_med->tp_orig = NULL;
}
call_med->tp_orig = NULL;
}
pj_log_pop_indent();
return PJ_SUCCESS;
}
pj_status_t pjsua_media_channel_update(pjsua_call_id call_id,
const pjmedia_sdp_session *local_sdp,
const pjmedia_sdp_session *remote_sdp)
{
pjsua_call *call = &pjsua_var.calls[call_id];
pjsua_acc *acc = &pjsua_var.acc[call->acc_id];
pj_pool_t *tmp_pool = call->inv->pool_prov;
unsigned mi;
pj_bool_t got_media = PJ_FALSE;
pj_status_t status = PJ_SUCCESS;
const pj_str_t STR_AUDIO = { "audio", 5 };
const pj_str_t STR_VIDEO = { "video", 5 };
pj_uint8_t maudidx[PJSUA_MAX_CALL_MEDIA];
unsigned maudcnt = PJ_ARRAY_SIZE(maudidx);
unsigned mtotaudcnt = PJ_ARRAY_SIZE(maudidx);
pj_uint8_t mvididx[PJSUA_MAX_CALL_MEDIA];
unsigned mvidcnt = PJ_ARRAY_SIZE(mvididx);
unsigned mtotvidcnt = PJ_ARRAY_SIZE(mvididx);
pj_bool_t need_renego_sdp = PJ_FALSE;
if (pjsua_get_state() != PJSUA_STATE_RUNNING)
return PJ_EBUSY;
PJ_LOG(4,(THIS_FILE, "Call %d: updating media..", call_id));
pj_log_push_indent();
/* Destroy existing media session, if any. */
stop_media_session(call->index);
/* Call media count must be at least equal to SDP media. Note that
* it may not be equal when remote removed any SDP media line.
*/
pj_assert(call->med_prov_cnt >= local_sdp->media_count);
/* Reset audio_idx first */
call->audio_idx = -1;
/* Sort audio/video based on "quality" */
sort_media(local_sdp, &STR_AUDIO, acc->cfg.use_srtp,
maudidx, &maudcnt, &mtotaudcnt);
#if PJMEDIA_HAS_VIDEO
sort_media(local_sdp, &STR_VIDEO, acc->cfg.use_srtp,
mvididx, &mvidcnt, &mtotvidcnt);
#else
PJ_UNUSED_ARG(STR_VIDEO);
mvidcnt = mtotvidcnt = 0;
#endif
/* Applying media count limitation. Note that in generating SDP answer,
* no media count limitation applied, as we didn't know yet which media
* would pass the SDP negotiation.
*/
if (maudcnt > call->opt.aud_cnt || mvidcnt > call->opt.vid_cnt)
{
pjmedia_sdp_session *local_sdp2;
maudcnt = PJ_MIN(maudcnt, call->opt.aud_cnt);
mvidcnt = PJ_MIN(mvidcnt, call->opt.vid_cnt);
local_sdp2 = pjmedia_sdp_session_clone(tmp_pool, local_sdp);
for (mi=0; mi < local_sdp2->media_count; ++mi) {
pjmedia_sdp_media *m = local_sdp2->media[mi];
if (m->desc.port == 0 ||
pj_memchr(maudidx, mi, maudcnt*sizeof(maudidx[0])) ||
pj_memchr(mvididx, mi, mvidcnt*sizeof(mvididx[0])))
{
continue;
}
/* Deactivate this media */
pjmedia_sdp_media_deactivate(tmp_pool, m);
}
local_sdp = local_sdp2;
need_renego_sdp = PJ_TRUE;
}
/* Process each media stream */
for (mi=0; mi < call->med_prov_cnt; ++mi) {
pjsua_call_media *call_med = &call->media_prov[mi];
if (mi >= local_sdp->media_count ||
mi >= remote_sdp->media_count)
{
/* This may happen when remote removed any SDP media lines in
* its re-offer.
*/
if (call_med->tp) {
/* Close the media transport */
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_NULL);
pjmedia_transport_close(call_med->tp);
call_med->tp = call_med->tp_orig = NULL;
}
continue;
#if 0
/* Something is wrong */
PJ_LOG(1,(THIS_FILE, "Error updating media for call %d: "
"invalid media index %d in SDP", call_id, mi));
status = PJMEDIA_SDP_EINSDP;
goto on_error;
#endif
}
if (call_med->type==PJMEDIA_TYPE_AUDIO) {
pjmedia_stream_info the_si, *si = &the_si;
status = pjmedia_stream_info_from_sdp(si, tmp_pool, pjsua_var.med_endpt,
local_sdp, remote_sdp, mi);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status,
"pjmedia_stream_info_from_sdp() failed "
"for call_id %d media %d",
call_id, mi));
continue;
}
/* Check if no media is active */
if (si->dir == PJMEDIA_DIR_NONE) {
/* Update call media state and direction */
call_med->state = PJSUA_CALL_MEDIA_NONE;
call_med->dir = PJMEDIA_DIR_NONE;
} else {
pjmedia_transport_info tp_info;
/* Start/restart media transport based on info in SDP */
status = pjmedia_transport_media_start(call_med->tp,
tmp_pool, local_sdp,
remote_sdp, mi);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status,
"pjmedia_transport_media_start() failed "
"for call_id %d media %d",
call_id, mi));
continue;
}
pjsua_set_media_tp_state(call_med, 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) {
unsigned 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_med->rem_srtp_use = srtp_info->peer_use;
break;
}
}
}
/* Call media direction */
call_med->dir = si->dir;
/* Call media state */
if (call->local_hold)
call_med->state = PJSUA_CALL_MEDIA_LOCAL_HOLD;
else if (call_med->dir == PJMEDIA_DIR_DECODING)
call_med->state = PJSUA_CALL_MEDIA_REMOTE_HOLD;
else
call_med->state = PJSUA_CALL_MEDIA_ACTIVE;
}
/* Call implementation */
status = pjsua_aud_channel_update(call_med, tmp_pool, si,
local_sdp, remote_sdp);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status,
"pjsua_aud_channel_update() failed "
"for call_id %d media %d",
call_id, mi));
continue;
}
/* Print info. */
if (status == PJ_SUCCESS) {
char info[80];
int info_len = 0;
int len;
const char *dir;
switch (si->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)", mi,
(int)si->fmt.encoding_name.slen,
si->fmt.encoding_name.ptr,
dir);
if (len > 0)
info_len += len;
PJ_LOG(4,(THIS_FILE,"Audio updated%s", info));
}
if (call->audio_idx==-1 && status==PJ_SUCCESS &&
si->dir != PJMEDIA_DIR_NONE)
{
call->audio_idx = mi;
}
#if defined(PJMEDIA_HAS_VIDEO) && (PJMEDIA_HAS_VIDEO != 0)
} else if (call_med->type==PJMEDIA_TYPE_VIDEO) {
pjmedia_vid_stream_info the_si, *si = &the_si;
status = pjmedia_vid_stream_info_from_sdp(si, tmp_pool, pjsua_var.med_endpt,
local_sdp, remote_sdp, mi);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status,
"pjmedia_vid_stream_info_from_sdp() failed "
"for call_id %d media %d",
call_id, mi));
continue;
}
/* Check if no media is active */
if (si->dir == PJMEDIA_DIR_NONE) {
/* Update call media state and direction */
call_med->state = PJSUA_CALL_MEDIA_NONE;
call_med->dir = PJMEDIA_DIR_NONE;
} else {
pjmedia_transport_info tp_info;
/* Start/restart media transport */
status = pjmedia_transport_media_start(call_med->tp,
tmp_pool, local_sdp,
remote_sdp, mi);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status,
"pjmedia_transport_media_start() failed "
"for call_id %d media %d",
call_id, mi));
continue;
}
pjsua_set_media_tp_state(call_med, 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) {
unsigned 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 *sri;
sri=(pjmedia_srtp_info*)tp_info.spc_info[i].buffer;
call_med->rem_srtp_use = sri->peer_use;
break;
}
}
}
/* Call media direction */
call_med->dir = si->dir;
/* Call media state */
if (call->local_hold)
call_med->state = PJSUA_CALL_MEDIA_LOCAL_HOLD;
else if (call_med->dir == PJMEDIA_DIR_DECODING)
call_med->state = PJSUA_CALL_MEDIA_REMOTE_HOLD;
else
call_med->state = PJSUA_CALL_MEDIA_ACTIVE;
}
status = pjsua_vid_channel_update(call_med, tmp_pool, si,
local_sdp, remote_sdp);
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status,
"pjsua_vid_channel_update() failed "
"for call_id %d media %d",
call_id, mi));
continue;
}
/* Print info. */
{
char info[80];
int info_len = 0;
int len;
const char *dir;
switch (si->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)", mi,
(int)si->codec_info.encoding_name.slen,
si->codec_info.encoding_name.ptr,
dir);
if (len > 0)
info_len += len;
PJ_LOG(4,(THIS_FILE,"Video updated%s", info));
}
#endif
} else {
status = PJMEDIA_EINVALIMEDIATYPE;
}
/* Close the transport of deactivated media, need this here as media
* can be deactivated by the SDP negotiation and the max media count
* (account) setting.
*/
if (local_sdp->media[mi]->desc.port==0 && call_med->tp) {
pjsua_set_media_tp_state(call_med, PJSUA_MED_TP_NULL);
pjmedia_transport_close(call_med->tp);
call_med->tp = call_med->tp_orig = NULL;
}
if (status != PJ_SUCCESS) {
PJ_PERROR(1,(THIS_FILE, status, "Error updating media call%02d:%d",
call_id, mi));
} else {
got_media = PJ_TRUE;
}
}
/* Update call media from provisional media */
call->med_cnt = call->med_prov_cnt;
pj_memcpy(call->media, call->media_prov,
sizeof(call->media_prov[0]) * call->med_prov_cnt);
/* Perform SDP re-negotiation if needed. */
if (got_media && need_renego_sdp) {
pjmedia_sdp_neg *neg = call->inv->neg;
/* This should only happen when we are the answerer. */
PJ_ASSERT_RETURN(neg && !pjmedia_sdp_neg_was_answer_remote(neg),
PJMEDIA_SDPNEG_EINSTATE);
status = pjmedia_sdp_neg_set_remote_offer(tmp_pool, neg, remote_sdp);
if (status != PJ_SUCCESS)
goto on_error;
status = pjmedia_sdp_neg_set_local_answer(tmp_pool, neg, local_sdp);
if (status != PJ_SUCCESS)
goto on_error;
status = pjmedia_sdp_neg_negotiate(tmp_pool, neg, 0);
if (status != PJ_SUCCESS)
goto on_error;
}
pj_log_pop_indent();
return (got_media? PJ_SUCCESS : PJMEDIA_SDPNEG_ENOMEDIA);
on_error:
pj_log_pop_indent();
return status;
}
/*****************************************************************************
* 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) {
pj_bzero(&id[i], sizeof(pjsua_codec_info));
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 (count > 1? PJ_ETOOMANY : 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 *codec_id,
const pjmedia_codec_param *param)
{
const pjmedia_codec_info *info[2];
pjmedia_codec_mgr *codec_mgr;
unsigned count = 2;
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;
/* Codec ID should be specific, except for G.722.1 */
if (count > 1 &&
pj_strnicmp2(codec_id, "G7221/16", 8) != 0 &&
pj_strnicmp2(codec_id, "G7221/32", 8) != 0)
{
pj_assert(!"Codec ID is not specific");
return PJ_ETOOMANY;
}
status = pjmedia_codec_mgr_set_default_param(codec_mgr, info[0], param);
return status;
}
pj_status_t pjsua_media_apply_xml_control(pjsua_call_id call_id,
const pj_str_t *xml_st)
{
#if PJMEDIA_HAS_VIDEO
pjsua_call *call = &pjsua_var.calls[call_id];
const pj_str_t PICT_FAST_UPDATE = {"picture_fast_update", 19};
if (pj_strstr(xml_st, &PICT_FAST_UPDATE)) {
unsigned i;
PJ_LOG(4,(THIS_FILE, "Received keyframe request via SIP INFO"));
for (i = 0; i < call->med_cnt; ++i) {
pjsua_call_media *cm = &call->media[i];
if (cm->type != PJMEDIA_TYPE_VIDEO || !cm->strm.v.stream)
continue;
pjmedia_vid_stream_send_keyframe(cm->strm.v.stream);
}
return PJ_SUCCESS;
}
#endif
/* Just to avoid compiler warning of unused var */
PJ_UNUSED_ARG(call_id);
PJ_UNUSED_ARG(xml_st);
return PJ_ENOTSUP;
}