From 03fd8d014f9871896a86534432c8757d65a576fe Mon Sep 17 00:00:00 2001 From: Jonathan Santos Date: Wed, 25 May 2011 13:54:02 -0400 Subject: Import upstream version 0.9.13 --- include/openbsc/mgcp_internal.h | 154 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 include/openbsc/mgcp_internal.h (limited to 'include/openbsc/mgcp_internal.h') diff --git a/include/openbsc/mgcp_internal.h b/include/openbsc/mgcp_internal.h new file mode 100644 index 000000000..7c6bb5425 --- /dev/null +++ b/include/openbsc/mgcp_internal.h @@ -0,0 +1,154 @@ +/* MGCP Private Data */ + +/* + * (C) 2009-2011 by Holger Hans Peter Freyther + * (C) 2009-2011 by On-Waves + * All Rights Reserved + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License as published by + * the Free Software Foundation; either version 3 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 Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see . + * + */ + +#ifndef OPENBSC_MGCP_DATA_H +#define OPENBSC_MGCP_DATA_H + +#include + +#define CI_UNUSED 0 + +enum mgcp_connection_mode { + MGCP_CONN_NONE = 0, + MGCP_CONN_RECV_ONLY = 1, + MGCP_CONN_SEND_ONLY = 2, + MGCP_CONN_RECV_SEND = MGCP_CONN_RECV_ONLY | MGCP_CONN_SEND_ONLY, + MGCP_CONN_LOOPBACK = 4, +}; + +enum mgcp_trunk_type { + MGCP_TRUNK_VIRTUAL, + MGCP_TRUNK_E1, +}; + +struct mgcp_rtp_state { + int initialized; + int patch; + + uint32_t orig_ssrc; + uint32_t ssrc; + uint16_t seq_no; + int lost_no; + int seq_offset; + uint32_t last_timestamp; + int32_t timestamp_offset; +}; + +struct mgcp_rtp_end { + /* statistics */ + unsigned int packets; + struct in_addr addr; + + /* in network byte order */ + int rtp_port, rtcp_port; + + int payload_type; + + /* + * Each end has a socket... + */ + struct bsc_fd rtp; + struct bsc_fd rtcp; + + int local_port; + int local_alloc; +}; + +enum { + MGCP_TAP_BTS_IN, + MGCP_TAP_BTS_OUT, + MGCP_TAP_NET_IN, + MGCP_TAP_NET_OUT, + + /* last element */ + MGCP_TAP_COUNT +}; + +struct mgcp_rtp_tap { + int enabled; + struct sockaddr_in forward; +}; + +struct mgcp_endpoint { + int allocated; + uint32_t ci; + char *callid; + char *local_options; + int conn_mode; + int orig_mode; + + /* backpointer */ + struct mgcp_config *cfg; + struct mgcp_trunk_config *tcfg; + + /* port status for bts/net */ + struct mgcp_rtp_end bts_end; + struct mgcp_rtp_end net_end; + + /* + * For transcoding we will send from the local_port + * of trans_bts and it will arrive at trans_net from + * where we will forward it to the network. + */ + struct mgcp_rtp_end trans_bts; + struct mgcp_rtp_end trans_net; + int is_transcoded; + + /* sequence bits */ + struct mgcp_rtp_state net_state; + struct mgcp_rtp_state bts_state; + + /* SSRC/seq/ts patching for loop */ + int allow_patch; + + /* tap for the endpoint */ + struct mgcp_rtp_tap taps[MGCP_TAP_COUNT]; +}; + +#define ENDPOINT_NUMBER(endp) abs(endp - endp->tcfg->endpoints) + +struct mgcp_msg_ptr { + unsigned int start; + unsigned int length; +}; + +int mgcp_analyze_header(struct mgcp_config *cfg, struct msgb *msg, + struct mgcp_msg_ptr *ptr, int size, + const char **transaction_id, struct mgcp_endpoint **endp); +int mgcp_send_dummy(struct mgcp_endpoint *endp); +int mgcp_bind_bts_rtp_port(struct mgcp_endpoint *endp, int rtp_port); +int mgcp_bind_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port); +int mgcp_bind_trans_bts_rtp_port(struct mgcp_endpoint *enp, int rtp_port); +int mgcp_bind_trans_net_rtp_port(struct mgcp_endpoint *enp, int rtp_port); +int mgcp_free_rtp_port(struct mgcp_rtp_end *end); + +/* For transcoding we need to manage an in and an output that are connected */ +static inline int endp_back_channel(int endpoint) +{ + return endpoint + 60; +} + +struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int index); +struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index); + + +#endif -- cgit v1.2.3