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ffmpeg / libavformat / rtp.h @ 72415b2a

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/*
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 * RTP definitions
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 * Copyright (c) 2002 Fabrice Bellard
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVFORMAT_RTP_H
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#define AVFORMAT_RTP_H
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#include "libavcodec/avcodec.h"
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/**
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 * Return the payload type for a given codec.
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 *
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 * @param codec The context of the codec
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 * @return In case of unknown payload type or dynamic payload type, a
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 * negative value is returned; otherwise, the payload type (the 'PT' field
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 * in the RTP header) is returned.
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 */
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int ff_rtp_get_payload_type(AVCodecContext *codec);
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/**
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 * Initialize a codec context based on the payload type.
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 *
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 * Fill the codec_type and codec_id fields of a codec context with
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 * information depending on the payload type; for audio codecs, the
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 * channels and sample_rate fields are also filled.
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 *
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 * @param codec The context of the codec
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 * @param payload_type The payload type (the 'PT' field in the RTP header)
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 * @return In case of unknown payload type or dynamic payload type, a
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 * negative value is returned; otherwise, 0 is returned
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 */
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int ff_rtp_get_codec_info(AVCodecContext *codec, int payload_type);
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/**
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 * Return the encoding name (as defined in
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 * http://www.iana.org/assignments/rtp-parameters) for a given payload type.
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 *
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 * @param payload_type The payload type (the 'PT' field in the RTP header)
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 * @return In case of unknown payload type or dynamic payload type, a pointer
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 * to an empty string is returned; otherwise, a pointer to a string containing
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 * the encoding name is returned
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 */
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const char *ff_rtp_enc_name(int payload_type);
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/**
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 * Return the codec id for the given encoding name and codec type.
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 *
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 * @param buf A pointer to the string containing the encoding name
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 * @param codec_type The codec type
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 * @return In case of unknown encoding name, CODEC_ID_NONE is returned;
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 * otherwise, the codec id is returned
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 */
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enum CodecID ff_rtp_codec_id(const char *buf, enum AVMediaType codec_type);
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#define RTP_PT_PRIVATE 96
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#define RTP_VERSION 2
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#define RTP_MAX_SDES 256   /**< maximum text length for SDES */
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/* RTCP paquets use 0.5 % of the bandwidth */
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#define RTCP_TX_RATIO_NUM 5
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#define RTCP_TX_RATIO_DEN 1000
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#endif /* AVFORMAT_RTP_H */