| 1 | /* |
| 2 | * This file is part of DisOrder. |
| 3 | * Copyright (C) 2007 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | /** @file lib/rtp.h |
| 19 | * @brief RTP packet header format |
| 20 | * |
| 21 | * See <a href="http://www.ietf.org/rfc/rfc1889.txt">RFC1889</a>. |
| 22 | */ |
| 23 | |
| 24 | #ifndef RTP_H |
| 25 | #define RTP_H |
| 26 | |
| 27 | /** @brief RTP packet header format |
| 28 | * |
| 29 | * See <a href="http://www.ietf.org/rfc/rfc1889.txt">RFC1889</a> (now obsoleted |
| 30 | * by <a href="http://www.ietf.org/rfc/rfc3550.txt">RFC3550</a>). |
| 31 | */ |
| 32 | struct attribute((packed)) rtp_header { |
| 33 | /** @brief Version, padding, extension and CSRC |
| 34 | * |
| 35 | * Version is bits 6 and 7; currently always 2. |
| 36 | * |
| 37 | * Padding is bit 5; if set frame includes padding octets. |
| 38 | * |
| 39 | * eXtension is bit 4; if set there is a header extension. |
| 40 | * |
| 41 | * CSRC Count is bits 0-3 and is the number of CSRC identifiers following the |
| 42 | * header. |
| 43 | */ |
| 44 | uint8_t vpxcc; |
| 45 | |
| 46 | /** @brief Marker and payload type |
| 47 | * |
| 48 | * Marker is bit 7. Profile-defined. |
| 49 | * |
| 50 | * Payload Type is bits 0-6. Profile defined. |
| 51 | */ |
| 52 | uint8_t mpt; |
| 53 | |
| 54 | /** @brief Sequence number */ |
| 55 | uint16_t seq; |
| 56 | |
| 57 | /** @brief Timestamp */ |
| 58 | uint32_t timestamp; |
| 59 | |
| 60 | /** @brief Synchronization source */ |
| 61 | uint32_t ssrc; |
| 62 | }; |
| 63 | |
| 64 | #endif /* RTP_H */ |
| 65 | |
| 66 | /* |
| 67 | Local Variables: |
| 68 | c-basic-offset:2 |
| 69 | comment-column:40 |
| 70 | fill-column:79 |
| 71 | indent-tabs-mode:nil |
| 72 | End: |
| 73 | */ |