Emeric Vigier | 2f62582 | 2012-08-06 11:09:52 -0400 | [diff] [blame] | 1 | // Copyright (C) 2001-2005 Federico Montesino Pouzols <fedemp@altern.org>. |
| 2 | // |
| 3 | // This program is free software; you can redistribute it and/or modify |
| 4 | // it under the terms of the GNU General Public License as published by |
| 5 | // the Free Software Foundation; either version 2 of the License, or |
| 6 | // (at your option) any later version. |
| 7 | // |
| 8 | // This program is distributed in the hope that it will be useful, |
| 9 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | // GNU General Public License for more details. |
| 12 | // |
| 13 | // You should have received a copy of the GNU General Public License |
| 14 | // along with this program; if not, write to the Free Software |
| 15 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 16 | // |
| 17 | // As a special exception, you may use this file as part of a free software |
| 18 | // library without restriction. Specifically, if other files instantiate |
| 19 | // templates or use macros or inline functions from this file, or you compile |
| 20 | // this file and link it with other files to produce an executable, this |
| 21 | // file does not by itself cause the resulting executable to be covered by |
| 22 | // the GNU General Public License. This exception does not however |
| 23 | // invalidate any other reasons why the executable file might be covered by |
| 24 | // the GNU General Public License. |
| 25 | // |
| 26 | // This exception applies only to the code released under the name GNU |
| 27 | // ccRTP. If you copy code from other releases into a copy of GNU |
| 28 | // ccRTP, as the General Public License permits, the exception does |
| 29 | // not apply to the code that you add in this way. To avoid misleading |
| 30 | // anyone as to the status of such modified files, you must delete |
| 31 | // this exception notice from them. |
| 32 | // |
| 33 | // If you write modifications of your own for GNU ccRTP, it is your choice |
| 34 | // whether to permit this exception to apply to your modifications. |
| 35 | // If you do not wish that, delete this exception notice. |
| 36 | // |
| 37 | |
| 38 | #ifndef CCXX_RTP_BASE_H_ |
| 39 | #define CCXX_RTP_BASE_H_ |
| 40 | |
| 41 | #ifndef CCXX_SOCKET_H_ |
| 42 | #include <cc++/config.h> |
| 43 | #include <cc++/socket.h> |
| 44 | #endif |
| 45 | |
| 46 | #ifndef CCXX_PACKING |
| 47 | #if defined(__GNUC__) |
| 48 | #define CCXX_PACKED |
| 49 | #elif !defined(__hpux) && !defined(_AIX) |
| 50 | #define CCXX_PACKED |
| 51 | #endif |
| 52 | #endif |
| 53 | |
| 54 | #ifdef CCXX_NAMESPACES |
| 55 | namespace ost { |
| 56 | #endif |
| 57 | |
| 58 | /** |
| 59 | * @file base.h |
| 60 | * |
| 61 | * @short Base elements for RTP stacks: constants, types and global |
| 62 | * functions. |
| 63 | **/ |
| 64 | |
| 65 | /// RTP protocol version supported. |
| 66 | const uint8 CCRTP_VERSION = 2; |
| 67 | |
| 68 | /// Time interval expressed in microseconds. |
| 69 | typedef uint32 microtimeout_t; |
| 70 | |
| 71 | /// Time interval expressed in nanoseconds. |
| 72 | typedef uint32 nanotimeout_t; |
| 73 | |
| 74 | /** |
| 75 | * Convert a time interval, expressed as a microtimeout_t (number of |
| 76 | * microseconds), into a timeval value. |
| 77 | * |
| 78 | * @param to time interval, in microseconds. |
| 79 | * @return the same time interval, as a timeval value. |
| 80 | **/ |
| 81 | __EXPORT timeval |
| 82 | microtimeout2Timeval(microtimeout_t to); |
| 83 | |
| 84 | /** |
| 85 | * Convert a time interval, expressed as a timeval value into a |
| 86 | * microseconds counter. |
| 87 | * |
| 88 | * @param t time, as a timeval. |
| 89 | * @return the same time, as a microseconds counter. |
| 90 | **/ |
| 91 | inline microtimeout_t |
| 92 | timeval2microtimeout(const timeval& t) |
| 93 | { return ((t.tv_sec * 1000000ul) + t.tv_usec); } |
| 94 | |
| 95 | /** |
| 96 | * Convert a time interval, expressed as the difference between two |
| 97 | * timeval values (t1-t2), into a microseconds counter. |
| 98 | * |
| 99 | * @param t1 First timeval. |
| 100 | * @param t2 Second timeval. |
| 101 | * @return difference between t1 and t2, in microseconds. |
| 102 | **/ |
| 103 | inline microtimeout_t |
| 104 | timevalDiff2microtimeout(const timeval& t1, const timeval& t2) |
| 105 | { |
| 106 | return ((t1.tv_sec - t2.tv_sec) * 1000000ul) + |
| 107 | (t1.tv_usec - t2.tv_usec); |
| 108 | } |
| 109 | |
| 110 | /// registered default RTP data transport port |
| 111 | const tpport_t DefaultRTPDataPort = 5004; |
| 112 | |
| 113 | /// registered default RTCP transport port |
| 114 | const tpport_t DefaultRTCPPort = 5005; |
| 115 | |
| 116 | #ifndef HAVE_GETTIMEOFDAY |
| 117 | #ifdef WIN32 |
| 118 | __EXPORT int |
| 119 | gettimeofday(struct timeval *tv_, void *tz_); |
| 120 | #endif |
| 121 | #endif |
| 122 | |
| 123 | #ifdef CCXX_NAMESPACES |
| 124 | } |
| 125 | #endif |
| 126 | |
| 127 | #endif // ndef CCXX_RTP_BASE_H_ |
| 128 | |
| 129 | /** EMACS ** |
| 130 | * Local variables: |
| 131 | * mode: c++ |
| 132 | * c-basic-offset: 8 |
| 133 | * End: |
| 134 | */ |