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/*
* RTMP definitions
* Copyright (c) 2009 Kostya 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
#define HMAC_IPAD_VAL 0x36
#define HMAC_OPAD_VAL 0x5C
/**
* A non-zero transaction id requires the server to send back
* a _result or _error response.
* Setting it to 0 marks the message as a notification not
* requiring feedback.
*/
#define RTMP_NOTIFICATION 0
/**
* 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 */
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