94 lines
3.5 KiB
C
94 lines
3.5 KiB
C
/*
|
|
* Realmedia RTSP (RDT) definitions
|
|
* Copyright (c) 2007 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
|
|
*
|
|
* 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_RDT_H
|
|
#define AVFORMAT_RDT_H
|
|
|
|
#include <stdint.h>
|
|
#include "avformat.h"
|
|
#include "rtp.h"
|
|
|
|
typedef struct RDTDemuxContext RDTDemuxContext;
|
|
|
|
RDTDemuxContext *ff_rdt_parse_open(AVFormatContext *ic, AVStream *st,
|
|
void *priv_data,
|
|
RTPDynamicProtocolHandler *handler);
|
|
void ff_rdt_parse_close(RDTDemuxContext *s);
|
|
|
|
/**
|
|
* Calculate the response (RealChallenge2 in the RTSP header) to the
|
|
* challenge (RealChallenge1 in the RTSP header from the Real/Helix
|
|
* server), which is used as some sort of client validation.
|
|
*
|
|
* @param response pointer to response buffer, it should be at least 41 bytes
|
|
* (40 data + 1 zero) bytes long.
|
|
* @param chksum pointer to buffer containing a checksum of the response,
|
|
* it should be at least 9 (8 data + 1 zero) bytes long.
|
|
* @param challenge pointer to the RealChallenge1 value provided by the
|
|
* server.
|
|
*/
|
|
void ff_rdt_calc_response_and_checksum(char response[41], char chksum[9],
|
|
const char *challenge);
|
|
|
|
/**
|
|
* Register RDT-related dynamic payload handlers with our cache.
|
|
*/
|
|
void av_register_rdt_dynamic_payload_handlers(void);
|
|
|
|
/**
|
|
* Add subscription information to Subscribe parameter string.
|
|
*
|
|
* @param cmd string to write the subscription information into.
|
|
* @param size size of cmd.
|
|
* @param stream_nr stream number.
|
|
* @param rule_nr rule number to conform to.
|
|
*/
|
|
void ff_rdt_subscribe_rule(char *cmd, int size,
|
|
int stream_nr, int rule_nr);
|
|
// FIXME this will be removed ASAP
|
|
void ff_rdt_subscribe_rule2(RDTDemuxContext *s, char *cmd, int size,
|
|
int stream_nr, int rule_nr);
|
|
|
|
/**
|
|
* Parse RDT-style packet header.
|
|
*
|
|
* @param buf input buffer
|
|
* @param len length of input buffer
|
|
* @param set_id will be set to the set ID this packet belongs to
|
|
* @param seq_no will be set to the sequence number of the packet
|
|
* @param stream_id will be set to the stream ID this packet belongs to
|
|
* @param is_keyframe will be whether this packet belongs to a keyframe
|
|
* @param timestamp will be set to the timestamp of the packet
|
|
* @return the amount of bytes consumed, or <0 on error
|
|
*/
|
|
int ff_rdt_parse_header(const uint8_t *buf, int len,
|
|
int *set_id, int *seq_no, int *stream_id,
|
|
int *is_keyframe, uint32_t *timestamp);
|
|
|
|
/**
|
|
* Parse RDT-style packet data (header + media data).
|
|
* Usage similar to rtp_parse_packet().
|
|
*/
|
|
int ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt,
|
|
const uint8_t *buf, int len);
|
|
|
|
#endif /* AVFORMAT_RDT_H */
|