svcore
1.9
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ 00002 00003 /* 00004 Sonic Visualiser 00005 An audio file viewer and annotation editor. 00006 Centre for Digital Music, Queen Mary, University of London. 00007 00008 This program is free software; you can redistribute it and/or 00009 modify it under the terms of the GNU General Public License as 00010 published by the Free Software Foundation; either version 2 of the 00011 License, or (at your option) any later version. See the file 00012 COPYING included with this distribution for more information. 00013 */ 00014 00015 /* 00016 This is a modified version of a source file from the 00017 Rosegarden MIDI and audio sequencer and notation editor. 00018 This file copyright 2000-2006 Chris Cannam. 00019 */ 00020 00021 #ifndef _REAL_TIME_H_ 00022 #define _REAL_TIME_H_ 00023 00024 #include <iostream> 00025 #include <string> 00026 00027 struct timeval; 00028 00029 00035 struct RealTime 00036 { 00037 int sec; 00038 int nsec; 00039 00040 int usec() const { return nsec / 1000; } 00041 int msec() const { return nsec / 1000000; } 00042 00043 RealTime(): sec(0), nsec(0) {} 00044 RealTime(int s, int n); 00045 00046 RealTime(const RealTime &r) : 00047 sec(r.sec), nsec(r.nsec) { } 00048 00049 static RealTime fromSeconds(double sec); 00050 static RealTime fromMilliseconds(int msec); 00051 static RealTime fromTimeval(const struct timeval &); 00052 static RealTime fromXsdDuration(std::string xsdd); 00053 00054 double toDouble() const; 00055 00056 RealTime &operator=(const RealTime &r) { 00057 sec = r.sec; nsec = r.nsec; return *this; 00058 } 00059 00060 RealTime operator+(const RealTime &r) const { 00061 return RealTime(sec + r.sec, nsec + r.nsec); 00062 } 00063 RealTime operator-(const RealTime &r) const { 00064 return RealTime(sec - r.sec, nsec - r.nsec); 00065 } 00066 RealTime operator-() const { 00067 return RealTime(-sec, -nsec); 00068 } 00069 00070 bool operator <(const RealTime &r) const { 00071 if (sec == r.sec) return nsec < r.nsec; 00072 else return sec < r.sec; 00073 } 00074 00075 bool operator >(const RealTime &r) const { 00076 if (sec == r.sec) return nsec > r.nsec; 00077 else return sec > r.sec; 00078 } 00079 00080 bool operator==(const RealTime &r) const { 00081 return (sec == r.sec && nsec == r.nsec); 00082 } 00083 00084 bool operator!=(const RealTime &r) const { 00085 return !(r == *this); 00086 } 00087 00088 bool operator>=(const RealTime &r) const { 00089 if (sec == r.sec) return nsec >= r.nsec; 00090 else return sec >= r.sec; 00091 } 00092 00093 bool operator<=(const RealTime &r) const { 00094 if (sec == r.sec) return nsec <= r.nsec; 00095 else return sec <= r.sec; 00096 } 00097 00098 RealTime operator*(int m) const; 00099 RealTime operator/(int d) const; 00100 00101 RealTime operator*(double m) const; 00102 RealTime operator/(double d) const; 00103 00107 double operator/(const RealTime &r) const; 00108 00115 std::string toString(bool align = false) const; 00116 00121 static RealTime fromString(std::string); 00122 00127 std::string toText(bool fixedDp = false) const; 00128 00136 std::string toFrameText(int fps) const; 00137 00142 std::string toSecText() const; 00143 00147 std::string toXsdDuration() const; 00148 00152 static long realTime2Frame(const RealTime &r, unsigned int sampleRate); 00153 00157 static RealTime frame2RealTime(long frame, unsigned int sampleRate); 00158 00159 static const RealTime zeroTime; 00160 }; 00161 00162 std::ostream &operator<<(std::ostream &out, const RealTime &rt); 00163 00164 #endif