FFmpeg/libavformat/rtp.h
Stefano Sabatini 72415b2adb Define AVMediaType enum, and use it instead of enum CodecType, which
is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-03-30 23:30:55 +00:00

80 lines
2.8 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"
/**
* Return the payload type for a given codec.
*
* @param codec The context of the codec
* @return In case of unknown payload type or dynamic payload type, a
* negative value is returned; otherwise, the payload type (the 'PT' field
* in the RTP header) is returned.
*/
int ff_rtp_get_payload_type(AVCodecContext *codec);
/**
* Initialize a codec context based on the payload type.
*
* Fill the codec_type and codec_id fields of a codec context with
* information depending on the payload type; for audio codecs, the
* channels and sample_rate fields are also filled.
*
* @param codec The context of the codec
* @param payload_type The payload type (the 'PT' field in the RTP header)
* @return In case of unknown payload type or dynamic payload type, a
* negative value is returned; otherwise, 0 is returned
*/
int ff_rtp_get_codec_info(AVCodecContext *codec, int payload_type);
/**
* Return the encoding name (as defined in
* http://www.iana.org/assignments/rtp-parameters) for a given payload type.
*
* @param payload_type The payload type (the 'PT' field in the RTP header)
* @return In case of unknown payload type or dynamic payload type, a pointer
* to an empty string is returned; otherwise, a pointer to a string containing
* the encoding name is returned
*/
const char *ff_rtp_enc_name(int payload_type);
/**
* Return the codec id for the given encoding name and codec type.
*
* @param buf A pointer to the string containing the encoding name
* @param codec_type The codec type
* @return In case of unknown encoding name, CODEC_ID_NONE is returned;
* otherwise, the codec id is returned
*/
enum CodecID ff_rtp_codec_id(const char *buf, enum AVMediaType codec_type);
#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 */