/*
  * RTMP definitions

  * Copyright (c) 2009 Konstantin Shishkov

  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg 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
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #ifndef AVFORMAT_RTMP_H
 #define AVFORMAT_RTMP_H
 
 #include "avformat.h"
 
 #define RTMP_DEFAULT_PORT 1935

 #define RTMPS_DEFAULT_PORT 443

 
 #define RTMP_HANDSHAKE_PACKET_SIZE 1536
 
 /**
  * emulated Flash client version - 9.0.124.2 on Linux
  * @{
  */
 #define RTMP_CLIENT_PLATFORM "LNX"
 #define RTMP_CLIENT_VER1    9
 #define RTMP_CLIENT_VER2    0
 #define RTMP_CLIENT_VER3  124
 #define RTMP_CLIENT_VER4    2
 /** @} */ //version defines
 

 /**
  * Calculate HMAC-SHA2 digest for RTMP handshake packets.
  *
  * @param src    input buffer
  * @param len    input buffer length (should be 1536)
  * @param gap    offset in buffer where 32 bytes should not be taken into account
  *               when calculating digest (since it will be used to store that digest)
  * @param key    digest key
  * @param keylen digest key length
  * @param dst    buffer where calculated digest will be stored (32 bytes)
  */
 int ff_rtmp_calc_digest(const uint8_t *src, int len, int gap,
                         const uint8_t *key, int keylen, uint8_t *dst);
 

 /**
  * Calculate digest position for RTMP handshake packets.
  *
  * @param buf input buffer (should be 1536 bytes)
  * @param off offset in buffer where to start calculating digest position
  * @param mod_val value used for computing modulo
  * @param add_val value added at the end (after computing modulo)
  */
 int ff_rtmp_calc_digest_pos(const uint8_t *buf, int off, int mod_val,
                             int add_val);
 

 #endif /* AVFORMAT_RTMP_H */