/* $Id: pjsua_media.c 4182 2012-06-27 07:12:23Z ming $ */ /* * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) * Copyright (C) 2003-2008 Benny Prijono * * 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 #include #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; iport; 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; iqos_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; irole==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; imed_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; imed_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; imed_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; imedia_count && countmedia[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 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 = "" "" "" ""; 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; imed_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; miopt.vid_cnt; for (mi=0; mimed_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; mimed_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; mimed_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; mimed_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 (mimed_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; mimed_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; mimed_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; islen==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; }