mirror of https://git.ffmpeg.org/ffmpeg.git
93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
/*
|
|
* RTP definitions
|
|
* Copyright (c) 2002 Fabrice Bellard.
|
|
*
|
|
* 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_RTP_H
|
|
#define AVFORMAT_RTP_H
|
|
|
|
#include "libavcodec/avcodec.h"
|
|
#include "avformat.h"
|
|
|
|
/** Structure listing useful vars to parse RTP packet payload*/
|
|
typedef struct rtp_payload_data
|
|
{
|
|
int sizelength;
|
|
int indexlength;
|
|
int indexdeltalength;
|
|
int profile_level_id;
|
|
int streamtype;
|
|
int objecttype;
|
|
char *mode;
|
|
|
|
/** mpeg 4 AU headers */
|
|
struct AUHeaders {
|
|
int size;
|
|
int index;
|
|
int cts_flag;
|
|
int cts;
|
|
int dts_flag;
|
|
int dts;
|
|
int rap_flag;
|
|
int streamstate;
|
|
} *au_headers;
|
|
int nb_au_headers;
|
|
int au_headers_length_bytes;
|
|
int cur_au_index;
|
|
} RTPPayloadData;
|
|
|
|
typedef struct PayloadContext PayloadContext;
|
|
typedef struct RTPDynamicProtocolHandler_s RTPDynamicProtocolHandler;
|
|
|
|
#define RTP_MIN_PACKET_LENGTH 12
|
|
#define RTP_MAX_PACKET_LENGTH 1500 /* XXX: suppress this define */
|
|
|
|
int rtp_get_codec_info(AVCodecContext *codec, int payload_type);
|
|
|
|
/** return < 0 if unknown payload type */
|
|
int rtp_get_payload_type(AVCodecContext *codec);
|
|
|
|
typedef struct RTPDemuxContext RTPDemuxContext;
|
|
RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, URLContext *rtpc, int payload_type, RTPPayloadData *rtp_payload_data);
|
|
void rtp_parse_set_dynamic_protocol(RTPDemuxContext *s, PayloadContext *ctx,
|
|
RTPDynamicProtocolHandler *handler);
|
|
int rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt,
|
|
const uint8_t *buf, int len);
|
|
void rtp_parse_close(RTPDemuxContext *s);
|
|
|
|
int rtp_get_local_port(URLContext *h);
|
|
int rtp_set_remote_url(URLContext *h, const char *uri);
|
|
void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd);
|
|
|
|
/**
|
|
* some rtp servers assume client is dead if they don't hear from them...
|
|
* so we send a Receiver Report to the provided ByteIO context
|
|
* (we don't have access to the rtcp handle from here)
|
|
*/
|
|
int rtp_check_and_send_back_rr(RTPDemuxContext *s, int count);
|
|
|
|
#define RTP_PT_PRIVATE 96
|
|
#define RTP_VERSION 2
|
|
#define RTP_MAX_SDES 256 /**< maximum text length for SDES */
|
|
|
|
/* RTCP paquets use 0.5 % of the bandwidth */
|
|
#define RTCP_TX_RATIO_NUM 5
|
|
#define RTCP_TX_RATIO_DEN 1000
|
|
|
|
#endif /* AVFORMAT_RTP_H */
|