libavformat/rtmp.h

   1 /*
   2  * RTMP definitions
   3  * Copyright (c) 2009 Kostya Shishkov
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * Libav is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with Libav; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #ifndef AVFORMAT_RTMP_H
  23 #define AVFORMAT_RTMP_H
  24
  25 #include "avformat.h"
  26
  27 #define RTMP_DEFAULT_PORT 1935
  28 #define RTMPS_DEFAULT_PORT 443
  29
  30 #define RTMP_HANDSHAKE_PACKET_SIZE 1536
  31
  32 #define HMAC_IPAD_VAL 0x36
  33 #define HMAC_OPAD_VAL 0x5C
  34
  35 /**
  36  * emulated Flash client version - 9.0.124.2 on Linux
  37  * @{
  38  */
  39 #define RTMP_CLIENT_PLATFORM "LNX"
  40 #define RTMP_CLIENT_VER1    9
  41 #define RTMP_CLIENT_VER2    0
  42 #define RTMP_CLIENT_VER3  124
  43 #define RTMP_CLIENT_VER4    2
  44 /** @} */ //version defines
  45
  46 /**
  47  * Calculate HMAC-SHA2 digest for RTMP handshake packets.
  48  *
  49  * @param src    input buffer
  50  * @param len    input buffer length (should be 1536)
  51  * @param gap    offset in buffer where 32 bytes should not be taken into account
  52  *               when calculating digest (since it will be used to store that digest)
  53  * @param key    digest key
  54  * @param keylen digest key length
  55  * @param dst    buffer where calculated digest will be stored (32 bytes)
  56  */
  57 int ff_rtmp_calc_digest(const uint8_t *src, int len, int gap,
  58                         const uint8_t *key, int keylen, uint8_t *dst);
  59
  60 /**
  61  * Calculate digest position for RTMP handshake packets.
  62  *
  63  * @param buf input buffer (should be 1536 bytes)
  64  * @param off offset in buffer where to start calculating digest position
  65  * @param mod_val value used for computing modulo
  66  * @param add_val value added at the end (after computing modulo)
  67  */
  68 int ff_rtmp_calc_digest_pos(const uint8_t *buf, int off, int mod_val,
  69                             int add_val);
  70
  71 #endif /* AVFORMAT_RTMP_H */