michael@0: /*
michael@0:  * rtp.h
michael@0:  * 
michael@0:  * rtp interface for srtp reference implementation
michael@0:  *
michael@0:  * David A. McGrew
michael@0:  * Cisco Systems, Inc.
michael@0:  *
michael@0:  * data types:
michael@0:  *
michael@0:  * rtp_msg_t       an rtp message (the data that goes on the wire)
michael@0:  * rtp_sender_t    sender side socket and rtp info
michael@0:  * rtp_receiver_t  receiver side socket and rtp info
michael@0:  *
michael@0:  */
michael@0: 
michael@0: /*
michael@0:  *	
michael@0:  * Copyright (c) 2001-2006, Cisco Systems, Inc.
michael@0:  * All rights reserved.
michael@0:  * 
michael@0:  * Redistribution and use in source and binary forms, with or without
michael@0:  * modification, are permitted provided that the following conditions
michael@0:  * are met:
michael@0:  * 
michael@0:  *   Redistributions of source code must retain the above copyright
michael@0:  *   notice, this list of conditions and the following disclaimer.
michael@0:  * 
michael@0:  *   Redistributions in binary form must reproduce the above
michael@0:  *   copyright notice, this list of conditions and the following
michael@0:  *   disclaimer in the documentation and/or other materials provided
michael@0:  *   with the distribution.
michael@0:  * 
michael@0:  *   Neither the name of the Cisco Systems, Inc. nor the names of its
michael@0:  *   contributors may be used to endorse or promote products derived
michael@0:  *   from this software without specific prior written permission.
michael@0:  * 
michael@0:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0:  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
michael@0:  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
michael@0:  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
michael@0:  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
michael@0:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
michael@0:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
michael@0:  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
michael@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
michael@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
michael@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
michael@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
michael@0:  *
michael@0:  */
michael@0: 
michael@0: 
michael@0: #ifndef RTP_H
michael@0: #define RTP_H
michael@0: 
michael@0: #ifdef HAVE_NETINET_IN_H
michael@0: # include <netinet/in.h>
michael@0: #elif defined HAVE_WINSOCK2_H
michael@0: # include <winsock2.h>
michael@0: #endif
michael@0: 
michael@0: #include "srtp.h"
michael@0: 
michael@0: typedef struct rtp_sender_ctx_t *rtp_sender_t;
michael@0: 
michael@0: typedef struct rtp_receiver_ctx_t *rtp_receiver_t;
michael@0: 
michael@0: int
michael@0: rtp_sendto(rtp_sender_t sender, const void* msg, int len);
michael@0: 
michael@0: int
michael@0: rtp_recvfrom(rtp_receiver_t receiver, void *msg, int *len);
michael@0: 
michael@0: int
michael@0: rtp_receiver_init(rtp_receiver_t rcvr, int sock, 
michael@0: 		  struct sockaddr_in addr, unsigned int ssrc);
michael@0: 
michael@0: int
michael@0: rtp_sender_init(rtp_sender_t sender, int sock, 
michael@0: 		struct sockaddr_in addr, unsigned int ssrc);
michael@0: 
michael@0: /*
michael@0:  * srtp_sender_init(...) initializes an rtp_sender_t
michael@0:  */
michael@0: 
michael@0: int
michael@0: srtp_sender_init(rtp_sender_t rtp_ctx,          /* structure to be init'ed */
michael@0: 		 struct sockaddr_in name,       /* socket name             */
michael@0: 		 sec_serv_t security_services,  /* sec. servs. to be used  */
michael@0: 		 unsigned char *input_key       /* master key/salt in hex  */
michael@0: 		 );
michael@0: 
michael@0: int
michael@0: srtp_receiver_init(rtp_receiver_t rtp_ctx,       /* structure to be init'ed */
michael@0: 		   struct sockaddr_in name, 	 /* socket name             */
michael@0: 		   sec_serv_t security_services, /* sec. servs. to be used  */
michael@0: 		   unsigned char *input_key	 /* master key/salt in hex  */
michael@0: 		   );
michael@0: 
michael@0: 
michael@0: int
michael@0: rtp_sender_init_srtp(rtp_sender_t sender, const srtp_policy_t *policy);
michael@0: 
michael@0: int
michael@0: rtp_sender_deinit_srtp(rtp_sender_t sender);
michael@0: 
michael@0: int
michael@0: rtp_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy);
michael@0: 
michael@0: int
michael@0: rtp_receiver_deinit_srtp(rtp_receiver_t sender);
michael@0: 
michael@0: 
michael@0: rtp_sender_t 
michael@0: rtp_sender_alloc(void);
michael@0: 
michael@0: void
michael@0: rtp_sender_dealloc(rtp_sender_t rtp_ctx);
michael@0: 
michael@0: rtp_receiver_t 
michael@0: rtp_receiver_alloc(void);
michael@0: 
michael@0: void
michael@0: rtp_receiver_dealloc(rtp_receiver_t rtp_ctx);
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * RTP_HEADER_LEN indicates the size of an RTP header
michael@0:  */
michael@0: #define RTP_HEADER_LEN   12
michael@0: 
michael@0: /* 
michael@0:  * RTP_MAX_BUF_LEN defines the largest RTP packet in the rtp.c implementation
michael@0:  */
michael@0: #define RTP_MAX_BUF_LEN  16384
michael@0: 
michael@0: 
michael@0: #endif /* RTP_H */