The Tor Browser: netwerk/srtp/src/include/rtp.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /*

     2  * rtp.h

     3  *

     4  * rtp interface for srtp reference implementation

     5  *

     6  * David A. McGrew

     7  * Cisco Systems, Inc.

     8  *

     9  * data types:

    10  *

    11  * rtp_msg_t       an rtp message (the data that goes on the wire)

    12  * rtp_sender_t    sender side socket and rtp info

    13  * rtp_receiver_t  receiver side socket and rtp info

    14  *

    15  */

    17 /*

    18  *

    19  * Copyright (c) 2001-2006, Cisco Systems, Inc.

    20  * All rights reserved.

    21  *

    22  * Redistribution and use in source and binary forms, with or without

    23  * modification, are permitted provided that the following conditions

    24  * are met:

    25  *

    26  *   Redistributions of source code must retain the above copyright

    27  *   notice, this list of conditions and the following disclaimer.

    28  *

    29  *   Redistributions in binary form must reproduce the above

    30  *   copyright notice, this list of conditions and the following

    31  *   disclaimer in the documentation and/or other materials provided

    32  *   with the distribution.

    33  *

    34  *   Neither the name of the Cisco Systems, Inc. nor the names of its

    35  *   contributors may be used to endorse or promote products derived

    36  *   from this software without specific prior written permission.

    37  *

    38  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    39  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    40  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

    41  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

    42  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,

    43  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    44  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

    45  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

    46  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

    47  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    48  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

    49  * OF THE POSSIBILITY OF SUCH DAMAGE.

    50  *

    51  */

    54 #ifndef RTP_H

    55 #define RTP_H

    57 #ifdef HAVE_NETINET_IN_H

    58 # include <netinet/in.h>

    59 #elif defined HAVE_WINSOCK2_H

    60 # include <winsock2.h>

    61 #endif

    63 #include "srtp.h"

    65 typedef struct rtp_sender_ctx_t *rtp_sender_t;

    67 typedef struct rtp_receiver_ctx_t *rtp_receiver_t;

    69 int

    70 rtp_sendto(rtp_sender_t sender, const void* msg, int len);

    72 int

    73 rtp_recvfrom(rtp_receiver_t receiver, void *msg, int *len);

    75 int

    76 rtp_receiver_init(rtp_receiver_t rcvr, int sock,

    77 		  struct sockaddr_in addr, unsigned int ssrc);

    79 int

    80 rtp_sender_init(rtp_sender_t sender, int sock,

    81 		struct sockaddr_in addr, unsigned int ssrc);

    83 /*

    84  * srtp_sender_init(...) initializes an rtp_sender_t

    85  */

    87 int

    88 srtp_sender_init(rtp_sender_t rtp_ctx,          /* structure to be init'ed */

    89 		 struct sockaddr_in name,       /* socket name             */

    90 		 sec_serv_t security_services,  /* sec. servs. to be used  */

    91 		 unsigned char *input_key       /* master key/salt in hex  */

    92 		 );

    94 int

    95 srtp_receiver_init(rtp_receiver_t rtp_ctx,       /* structure to be init'ed */

    96 		   struct sockaddr_in name, 	 /* socket name             */

    97 		   sec_serv_t security_services, /* sec. servs. to be used  */

    98 		   unsigned char *input_key	 /* master key/salt in hex  */

    99 		   );

   102 int

   103 rtp_sender_init_srtp(rtp_sender_t sender, const srtp_policy_t *policy);

   105 int

   106 rtp_sender_deinit_srtp(rtp_sender_t sender);

   108 int

   109 rtp_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy);

   111 int

   112 rtp_receiver_deinit_srtp(rtp_receiver_t sender);

   115 rtp_sender_t

   116 rtp_sender_alloc(void);

   118 void

   119 rtp_sender_dealloc(rtp_sender_t rtp_ctx);

   121 rtp_receiver_t

   122 rtp_receiver_alloc(void);

   124 void

   125 rtp_receiver_dealloc(rtp_receiver_t rtp_ctx);

   128 /*

   129  * RTP_HEADER_LEN indicates the size of an RTP header

   130  */

   131 #define RTP_HEADER_LEN   12

   133 /*

   134  * RTP_MAX_BUF_LEN defines the largest RTP packet in the rtp.c implementation

   135  */

   136 #define RTP_MAX_BUF_LEN  16384

   139 #endif /* RTP_H */

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