| 1 | /*
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| 2 | * RTP definitions
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| 3 | * Copyright (c) 2002 Fabrice Bellard.
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| 4 | *
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| 5 | * This library is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU Lesser General Public
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| 7 | * License as published by the Free Software Foundation; either
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| 8 | * version 2 of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * This library is distributed in the hope that it will be useful,
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 13 | * Lesser General Public License for more details.
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| 14 | *
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| 15 | * You should have received a copy of the GNU Lesser General Public
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| 16 | * License along with this library; if not, write to the Free Software
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| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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| 18 | */
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| 19 | #ifndef RTP_H
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| 20 | #define RTP_H
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| 21 |
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| 22 | #define RTP_MIN_PACKET_LENGTH 12
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| 23 | #define RTP_MAX_PACKET_LENGTH 1500 /* XXX: suppress this define */
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| 24 |
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| 25 | int rtp_init(void);
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| 26 | int rtp_get_codec_info(AVCodecContext *codec, int payload_type);
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| 27 | int rtp_get_payload_type(AVCodecContext *codec);
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| 28 |
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| 29 | typedef struct RTPDemuxContext RTPDemuxContext;
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| 30 | typedef struct rtp_payload_data_s rtp_payload_data_s;
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| 31 | RTPDemuxContext *rtp_parse_open(AVFormatContext *s1, AVStream *st, int payload_type, rtp_payload_data_s *rtp_payload_data);
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| 32 | int rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt,
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| 33 | const uint8_t *buf, int len);
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| 34 | void rtp_parse_close(RTPDemuxContext *s);
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| 35 |
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| 36 | extern AVOutputFormat rtp_muxer;
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| 37 | extern AVInputFormat rtp_demuxer;
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| 38 |
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| 39 | int rtp_get_local_port(URLContext *h);
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| 40 | int rtp_set_remote_url(URLContext *h, const char *uri);
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| 41 | void rtp_get_file_handles(URLContext *h, int *prtp_fd, int *prtcp_fd);
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| 42 |
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| 43 | extern URLProtocol rtp_protocol;
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| 44 |
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| 45 | #define RTP_PT_PRIVATE 96
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| 46 | #define RTP_VERSION 2
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| 47 | #define RTP_MAX_SDES 256 /* maximum text length for SDES */
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| 48 |
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| 49 | /* RTCP paquets use 0.5 % of the bandwidth */
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| 50 | #define RTCP_TX_RATIO_NUM 5
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| 51 | #define RTCP_TX_RATIO_DEN 1000
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| 52 |
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| 53 | /* Structure listing usefull vars to parse RTP packet payload*/
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| 54 | typedef struct rtp_payload_data_s
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| 55 | {
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| 56 | int sizelength;
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| 57 | int indexlength;
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| 58 | int indexdeltalength;
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| 59 | int profile_level_id;
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| 60 | int streamtype;
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| 61 | int objecttype;
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| 62 | char *mode;
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| 63 |
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| 64 | /* mpeg 4 AU headers */
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| 65 | struct AUHeaders {
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| 66 | int size;
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| 67 | int index;
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| 68 | int cts_flag;
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| 69 | int cts;
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| 70 | int dts_flag;
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| 71 | int dts;
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| 72 | int rap_flag;
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| 73 | int streamstate;
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| 74 | } *au_headers;
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| 75 | int nb_au_headers;
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| 76 | int au_headers_length_bytes;
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| 77 | int cur_au_index;
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| 78 | } rtp_payload_data_t;
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| 79 |
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| 80 | typedef struct AVRtpPayloadType_s
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| 81 | {
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| 82 | int pt;
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| 83 | const char enc_name[50]; /* XXX: why 50 ? */
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| 84 | enum CodecType codec_type;
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| 85 | enum CodecID codec_id;
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| 86 | int clock_rate;
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| 87 | int audio_channels;
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| 88 | } AVRtpPayloadType_t;
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| 89 |
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| 90 | typedef struct AVRtpDynamicPayloadType_s /* payload type >= 96 */
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| 91 | {
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| 92 | const char enc_name[50]; /* XXX: still why 50 ? ;-) */
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| 93 | enum CodecType codec_type;
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| 94 | enum CodecID codec_id;
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| 95 | } AVRtpDynamicPayloadType_t;
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| 96 |
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| 97 | #if 0
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| 98 | typedef enum {
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| 99 | RTCP_SR = 200,
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| 100 | RTCP_RR = 201,
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| 101 | RTCP_SDES = 202,
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| 102 | RTCP_BYE = 203,
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| 103 | RTCP_APP = 204
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| 104 | } rtcp_type_t;
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| 105 |
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| 106 | typedef enum {
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| 107 | RTCP_SDES_END = 0,
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| 108 | RTCP_SDES_CNAME = 1,
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| 109 | RTCP_SDES_NAME = 2,
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| 110 | RTCP_SDES_EMAIL = 3,
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| 111 | RTCP_SDES_PHONE = 4,
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| 112 | RTCP_SDES_LOC = 5,
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| 113 | RTCP_SDES_TOOL = 6,
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| 114 | RTCP_SDES_NOTE = 7,
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| 115 | RTCP_SDES_PRIV = 8,
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| 116 | RTCP_SDES_IMG = 9,
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| 117 | RTCP_SDES_DOOR = 10,
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| 118 | RTCP_SDES_SOURCE = 11
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| 119 | } rtcp_sdes_type_t;
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| 120 | #endif
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| 121 |
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| 122 | extern AVRtpPayloadType_t AVRtpPayloadTypes[];
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| 123 | extern AVRtpDynamicPayloadType_t AVRtpDynamicPayloadTypes[];
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| 124 |
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| 125 | #endif /* RTP_H */
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