| /* |
| * 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 CodecType 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 */ |