mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-14 21:35:06 +02:00
![Michael Niedermayer](/assets/img/avatar_default.png)
* commit 'feeafb4adabd5c17de1738ed9962e40892b20edb': lavf: do not export av_register_{rtp,rdt}_dynamic_payload_handlers from shared objects Merged-by: Michael Niedermayer <michaelni@gmx.at>
113 lines
4.3 KiB
C
113 lines
4.3 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 "rtpdec.h"
|
|
|
|
typedef struct RDTDemuxContext RDTDemuxContext;
|
|
|
|
/**
|
|
* Allocate and init the RDT parsing context.
|
|
* @param ic the containing RTSP demuxer context
|
|
* @param first_stream_of_set_idx index to the first AVStream in the RTSP
|
|
* demuxer context's ic->streams array that is part of this
|
|
* particular stream's set of streams (with identical content)
|
|
* @param priv_data private data of the payload data handler context
|
|
* @param handler pointer to the parse_packet() payload parsing function
|
|
* @return a newly allocated RDTDemuxContext. Free with ff_rdt_parse_close().
|
|
*/
|
|
RDTDemuxContext *ff_rdt_parse_open(AVFormatContext *ic,
|
|
int first_stream_of_set_idx,
|
|
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 ff_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);
|
|
|
|
/**
|
|
* Parse RDT-style packet header.
|
|
*
|
|
* @param buf input buffer
|
|
* @param len length of input buffer
|
|
* @param pset_id will be set to the set ID this packet belongs to
|
|
* @param pseq_no will be set to the sequence number of the packet
|
|
* @param pstream_id will be set to the stream ID this packet belongs to
|
|
* @param pis_keyframe will be whether this packet belongs to a keyframe
|
|
* @param ptimestamp will be set to the timestamp of the packet
|
|
* @return the amount of bytes consumed, or negative on error
|
|
*/
|
|
int ff_rdt_parse_header(const uint8_t *buf, int len,
|
|
int *pset_id, int *pseq_no, int *pstream_id,
|
|
int *pis_keyframe, uint32_t *ptimestamp);
|
|
|
|
/**
|
|
* Parse RDT-style packet data (header + media data).
|
|
* Usage similar to rtp_parse_packet().
|
|
*/
|
|
int ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt,
|
|
uint8_t **buf, int len);
|
|
|
|
/**
|
|
* Parse a server-related SDP line.
|
|
*
|
|
* @param s the RTSP AVFormatContext
|
|
* @param stream_index the index of the first stream in the set represented
|
|
* by the SDP m= line (in s->streams)
|
|
* @param buf the SDP line
|
|
*/
|
|
void ff_real_parse_sdp_a_line(AVFormatContext *s, int stream_index,
|
|
const char *buf);
|
|
|
|
#endif /* AVFORMAT_RDT_H */
|