GF_Err PNC_InitRTP(GF_RTPChannel **chan, char *dest, int port, unsigned short mtu_size) { GF_Err res; GF_RTSPTransport tr; *chan = gf_rtp_new(); res = gf_rtp_set_ports(*chan, 0); if (res) { fprintf(stderr, "Cannot set RTP ports: %s\n", gf_error_to_string(res)); gf_rtp_del(*chan); return res; } tr.destination = dest; tr.IsUnicast = gf_sk_is_multicast_address(dest) ? 0 : 1; tr.Profile="RTP/AVP";//RTSP_PROFILE_RTP_AVP; tr.IsRecord = 0; tr.Append = 0; tr.source = "0.0.0.0"; tr.SSRC=rand(); tr.port_first = port; tr.port_last = port+1; if (tr.IsUnicast) { tr.client_port_first = port; tr.client_port_last = port+1; } else { tr.source = dest; tr.client_port_first = 0; tr.client_port_last = 0; } res = gf_rtp_setup_transport(*chan, &tr, dest); if (res) { fprintf(stderr, "Cannot setup RTP transport %s\n", gf_error_to_string(res)); gf_rtp_del(*chan); return res; } res = gf_rtp_initialize(*chan, 0, 1, mtu_size, 0, 0, NULL); if (res) { fprintf(stderr, "Cannot initialize RTP transport %s\n", gf_error_to_string(res)); gf_rtp_del(*chan); return res; } return GF_OK; }
static GF_Err rtp_stream_init_channel(GF_RTPStreamer *rtp, u32 path_mtu, const char * dest, int port, int ttl, const char *ifce_addr) { GF_RTSPTransport tr; GF_Err res; rtp->channel = gf_rtp_new(); gf_rtp_set_ports(rtp->channel, 0); memset(&tr, 0, sizeof(GF_RTSPTransport)); tr.IsUnicast = gf_sk_is_multicast_address(dest) ? 0 : 1; tr.Profile="RTP/AVP"; tr.destination = (char *)dest; tr.source = "0.0.0.0"; tr.IsRecord = 0; tr.Append = 0; tr.SSRC = rand(); tr.TTL = ttl; tr.port_first = port; tr.port_last = port+1; if (tr.IsUnicast) { tr.client_port_first = port; tr.client_port_last = port+1; } else { tr.source = (char *)dest; } res = gf_rtp_setup_transport(rtp->channel, &tr, dest); if (res !=0) { GF_LOG(GF_LOG_ERROR, GF_LOG_RTP, ("Cannot setup RTP transport info: %s\n", gf_error_to_string(res) )); return res; } res = gf_rtp_initialize(rtp->channel, 0, 1, path_mtu, 0, 0, (char *)ifce_addr); if (res !=0) { GF_LOG(GF_LOG_ERROR, GF_LOG_RTP, ("Cannot initialize RTP sockets: %s\n", gf_error_to_string(res) )); return res; } return GF_OK; }
RTPStream *RP_NewStream(RTPClient *rtp, GF_SDPMedia *media, GF_SDPInfo *sdp, RTPStream *input_stream) { GF_RTSPRange *range; RTPStream *tmp; GF_RTPMap *map; u32 i, ESID, ODID, ssrc, rtp_seq, rtp_time; Bool force_bcast = 0; Double Start, End; Float CurrentTime; u16 rvc_predef = 0; char *rvc_config_att = NULL; u32 s_port_first, s_port_last; GF_X_Attribute *att; Bool is_migration = 0; char *ctrl; GF_SDPConnection *conn; GF_RTSPTransport trans; u32 mid, prev_stream, base_stream; //extract all relevant info from the GF_SDPMedia Start = 0.0; End = -1.0; CurrentTime = 0.0f; ODID = 0; ESID = 0; ctrl = NULL; range = NULL; s_port_first = s_port_last = 0; ssrc = rtp_seq = rtp_time = 0; mid = prev_stream = base_stream = 0; i=0; while ((att = (GF_X_Attribute*)gf_list_enum(media->Attributes, &i))) { if (!stricmp(att->Name, "control")) ctrl = att->Value; else if (!stricmp(att->Name, "gpac-broadcast")) force_bcast = 1; else if (!stricmp(att->Name, "mpeg4-esid") && att->Value) ESID = atoi(att->Value); else if (!stricmp(att->Name, "mpeg4-odid") && att->Value) ODID = atoi(att->Value); else if (!stricmp(att->Name, "range") && !range) range = gf_rtsp_range_parse(att->Value); else if (!stricmp(att->Name, "x-stream-state") ) { sscanf(att->Value, "server-port=%u-%u;ssrc=%X;npt=%g;seq=%u;rtptime=%u", &s_port_first, &s_port_last, &ssrc, &CurrentTime, &rtp_seq, &rtp_time); is_migration = 1; } else if (!stricmp(att->Name, "x-server-port") ) { sscanf(att->Value, "%u-%u", &s_port_first, &s_port_last); } else if (!stricmp(att->Name, "rvc-config-predef")) { rvc_predef = atoi(att->Value); } else if (!stricmp(att->Name, "rvc-config")) { rvc_config_att = att->Value; } else if (!stricmp(att->Name, "mid")) { sscanf(att->Value, "L%d", &mid); } else if (!stricmp(att->Name, "depend")) { char buf[3000]; memset(buf, 0, 3000); sscanf(att->Value, "%*d lay L%d %*s %s", &base_stream, buf); if (!strlen(buf)) sscanf(att->Value, "%*d lay %s", buf); sscanf(buf, "L%d", &prev_stream); } } if (range) { Start = range->start; End = range->end; gf_rtsp_range_del(range); } /*check connection*/ conn = sdp->c_connection; if (conn && (!conn->host || !strcmp(conn->host, "0.0.0.0"))) conn = NULL; if (!conn) conn = (GF_SDPConnection*)gf_list_get(media->Connections, 0); if (conn && (!conn->host || !strcmp(conn->host, "0.0.0.0"))) conn = NULL; if (!conn) { /*RTSP RFC recommends an empty "c= " line but some server don't send it. Use session info (o=)*/ if (!sdp->o_net_type || !sdp->o_add_type || strcmp(sdp->o_net_type, "IN")) return NULL; if (strcmp(sdp->o_add_type, "IP4") && strcmp(sdp->o_add_type, "IP6")) return NULL; } else { if (strcmp(conn->net_type, "IN")) return NULL; if (strcmp(conn->add_type, "IP4") && strcmp(conn->add_type, "IP6")) return NULL; } /*do we support transport*/ if (strcmp(media->Profile, "RTP/AVP") && strcmp(media->Profile, "RTP/AVP/TCP") && strcmp(media->Profile, "RTP/SAVP") && strcmp(media->Profile, "RTP/SAVP/TCP") ) return NULL; /*check RTP map. For now we only support 1 RTPMap*/ if (media->fmt_list || (gf_list_count(media->RTPMaps) > 1)) return NULL; /*check payload type*/ map = (GF_RTPMap*)gf_list_get(media->RTPMaps, 0); /*this is an ESD-URL setup, we likely have namespace conflicts so overwrite given ES_ID by the app one (client side), but keep control (server side) if provided*/ if (input_stream) { ESID = input_stream->ES_ID; if (!ctrl) ctrl = input_stream->control; tmp = input_stream; } else { tmp = RP_FindChannel(rtp, NULL, ESID, NULL, 0); if (tmp) return NULL; GF_SAFEALLOC(tmp, RTPStream); tmp->owner = rtp; } /*create an RTP channel*/ tmp->rtp_ch = gf_rtp_new(); if (ctrl) tmp->control = gf_strdup(ctrl); tmp->ES_ID = ESID; tmp->OD_ID = ODID; tmp->mid = mid; tmp->prev_stream = prev_stream; tmp->base_stream = base_stream; memset(&trans, 0, sizeof(GF_RTSPTransport)); trans.Profile = media->Profile; trans.source = conn ? conn->host : sdp->o_address; trans.IsUnicast = gf_sk_is_multicast_address(trans.source) ? 0 : 1; if (!trans.IsUnicast) { trans.port_first = media->PortNumber; trans.port_last = media->PortNumber + 1; trans.TTL = conn ? conn->TTL : 0; } else { trans.client_port_first = media->PortNumber; trans.client_port_last = media->PortNumber + 1; trans.port_first = s_port_first ? s_port_first : trans.client_port_first; trans.port_last = s_port_last ? s_port_last : trans.client_port_last; } if (gf_rtp_setup_transport(tmp->rtp_ch, &trans, NULL) != GF_OK) { RP_DeleteStream(tmp); return NULL; } /*setup depacketizer*/ tmp->depacketizer = gf_rtp_depacketizer_new(media, rtp_sl_packet_cbk, tmp); if (!tmp->depacketizer) { RP_DeleteStream(tmp); return NULL; } /*setup channel*/ gf_rtp_setup_payload(tmp->rtp_ch, map); // tmp->status = NM_Disconnected; ctrl = (char *) gf_modules_get_option((GF_BaseInterface *) gf_term_get_service_interface(rtp->service), "Streaming", "DisableRTCP"); if (!ctrl || stricmp(ctrl, "yes")) tmp->flags |= RTP_ENABLE_RTCP; /*setup NAT keep-alive*/ ctrl = (char *) gf_modules_get_option((GF_BaseInterface *) gf_term_get_service_interface(rtp->service), "Streaming", "NATKeepAlive"); if (ctrl) gf_rtp_enable_nat_keepalive(tmp->rtp_ch, atoi(ctrl)); tmp->range_start = Start; tmp->range_end = End; if (End != -1.0) tmp->flags |= RTP_HAS_RANGE; if (force_bcast) tmp->flags |= RTP_FORCE_BROADCAST; if (is_migration) { tmp->current_start = (Double) CurrentTime; tmp->check_rtp_time = RTP_SET_TIME_RTP; gf_rtp_set_info_rtp(tmp->rtp_ch, rtp_seq, rtp_time, ssrc); tmp->status = RTP_SessionResume; } if (rvc_predef) { tmp->depacketizer->sl_map.rvc_predef = rvc_predef ; } else if (rvc_config_att) { char *rvc_data=NULL; u32 rvc_size; Bool is_gz = 0; if (!strncmp(rvc_config_att, "data:application/rvc-config+xml", 32) && strstr(rvc_config_att, "base64") ) { char *data = strchr(rvc_config_att, ','); if (data) { rvc_size = (u32) strlen(data) * 3 / 4 + 1; rvc_data = gf_malloc(sizeof(char) * rvc_size); rvc_size = gf_base64_decode(data, (u32) strlen(data), rvc_data, rvc_size); rvc_data[rvc_size] = 0; } if (!strncmp(rvc_config_att, "data:application/rvc-config+xml+gz", 35)) is_gz = 1; } else if (!strnicmp(rvc_config_att, "http://", 7) || !strnicmp(rvc_config_att, "https://", 8) ) { char *mime; if (gf_dm_get_file_memory(rvc_config_att, &rvc_data, &rvc_size, &mime) == GF_OK) { if (mime && strstr(mime, "+gz")) is_gz = 1; if (mime) gf_free(mime); } } if (rvc_data) { if (is_gz) { #ifdef GPAC_DISABLE_ZLIB fprintf(stderr, "Error: no zlib support - RVC not supported in RTP\n"); return NULL; #endif gf_gz_decompress_payload(rvc_data, rvc_size, &tmp->depacketizer->sl_map.rvc_config, &tmp->depacketizer->sl_map.rvc_config_size); gf_free(rvc_data); } else { tmp->depacketizer->sl_map.rvc_config = rvc_data; tmp->depacketizer->sl_map.rvc_config_size = rvc_size; } } } return tmp; }