cannam@21:
vamp-sdk/RealTime.h

00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
cannam@21: 00002 
cannam@21: 00003 /*
cannam@21: 00004     Vamp
cannam@21: 00005 
cannam@21: 00006     An API for audio analysis and feature extraction plugins.
cannam@21: 00007 
cannam@21: 00008     Centre for Digital Music, Queen Mary, University of London.
cannam@21: 00009     Copyright 2006 Chris Cannam.
cannam@21: 00010   
cannam@21: 00011     Permission is hereby granted, free of charge, to any person
cannam@21: 00012     obtaining a copy of this software and associated documentation
cannam@21: 00013     files (the "Software"), to deal in the Software without
cannam@21: 00014     restriction, including without limitation the rights to use, copy,
cannam@21: 00015     modify, merge, publish, distribute, sublicense, and/or sell copies
cannam@21: 00016     of the Software, and to permit persons to whom the Software is
cannam@21: 00017     furnished to do so, subject to the following conditions:
cannam@21: 00018 
cannam@21: 00019     The above copyright notice and this permission notice shall be
cannam@21: 00020     included in all copies or substantial portions of the Software.
cannam@21: 00021 
cannam@21: 00022     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
cannam@21: 00023     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
cannam@21: 00024     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
cannam@21: 00025     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
cannam@21: 00026     ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
cannam@21: 00027     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
cannam@21: 00028     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cannam@21: 00029 
cannam@21: 00030     Except as contained in this notice, the names of the Centre for
cannam@21: 00031     Digital Music; Queen Mary, University of London; and Chris Cannam
cannam@21: 00032     shall not be used in advertising or otherwise to promote the sale,
cannam@21: 00033     use or other dealings in this Software without prior written
cannam@21: 00034     authorization.
cannam@21: 00035 */
cannam@21: 00036 
cannam@21: 00037 /*
cannam@21: 00038    This is a modified version of a source file from the 
cannam@21: 00039    Rosegarden MIDI and audio sequencer and notation editor.
cannam@21: 00040    This file copyright 2000-2006 Chris Cannam.
cannam@21: 00041    Relicensed by the author as detailed above.
cannam@21: 00042 */
cannam@21: 00043 
cannam@21: 00044 #ifndef _VAMP_REAL_TIME_H_
cannam@21: 00045 #define _VAMP_REAL_TIME_H_
cannam@21: 00046 
cannam@21: 00047 #include <iostream>
cannam@21: 00048 #include <string>
cannam@21: 00049 
cannam@21: 00050 #ifndef _WIN32
cannam@21: 00051 struct timeval;
cannam@21: 00052 #endif
cannam@21: 00053 
cannam@21: 00054 #include "plugguard.h"
cannam@21: 00055 _VAMP_SDK_PLUGSPACE_BEGIN(RealTime.h)
cannam@21: 00056 
cannam@21: 00057 namespace Vamp {
cannam@21: 00058 
cannam@21: 00066 struct RealTime
cannam@21: 00067 {
cannam@21: 00068     int sec;
cannam@21: 00069     int nsec;
cannam@21: 00070 
cannam@21: 00071     int usec() const { return nsec / 1000; }
cannam@21: 00072     int msec() const { return nsec / 1000000; }
cannam@21: 00073 
cannam@21: 00074     RealTime(): sec(0), nsec(0) {}
cannam@21: 00075     RealTime(int s, int n);
cannam@21: 00076 
cannam@21: 00077     RealTime(const RealTime &r) :
cannam@21: 00078         sec(r.sec), nsec(r.nsec) { }
cannam@21: 00079 
cannam@21: 00080     static RealTime fromSeconds(double sec);
cannam@21: 00081     static RealTime fromMilliseconds(int msec);
cannam@21: 00082 
cannam@21: 00083 #ifndef _WIN32
cannam@21: 00084     static RealTime fromTimeval(const struct timeval &);
cannam@21: 00085 #endif
cannam@21: 00086 
cannam@21: 00087     RealTime &operator=(const RealTime &r) {
cannam@21: 00088         sec = r.sec; nsec = r.nsec; return *this;
cannam@21: 00089     }
cannam@21: 00090 
cannam@21: 00091     RealTime operator+(const RealTime &r) const {
cannam@21: 00092         return RealTime(sec + r.sec, nsec + r.nsec);
cannam@21: 00093     }
cannam@21: 00094     RealTime operator-(const RealTime &r) const {
cannam@21: 00095         return RealTime(sec - r.sec, nsec - r.nsec);
cannam@21: 00096     }
cannam@21: 00097     RealTime operator-() const {
cannam@21: 00098         return RealTime(-sec, -nsec);
cannam@21: 00099     }
cannam@21: 00100 
cannam@21: 00101     bool operator <(const RealTime &r) const {
cannam@21: 00102         if (sec == r.sec) return nsec < r.nsec;
cannam@21: 00103         else return sec < r.sec;
cannam@21: 00104     }
cannam@21: 00105 
cannam@21: 00106     bool operator >(const RealTime &r) const {
cannam@21: 00107         if (sec == r.sec) return nsec > r.nsec;
cannam@21: 00108         else return sec > r.sec;
cannam@21: 00109     }
cannam@21: 00110 
cannam@21: 00111     bool operator==(const RealTime &r) const {
cannam@21: 00112         return (sec == r.sec && nsec == r.nsec);
cannam@21: 00113     }
cannam@21: 00114  
cannam@21: 00115     bool operator!=(const RealTime &r) const {
cannam@21: 00116         return !(r == *this);
cannam@21: 00117     }
cannam@21: 00118  
cannam@21: 00119     bool operator>=(const RealTime &r) const {
cannam@21: 00120         if (sec == r.sec) return nsec >= r.nsec;
cannam@21: 00121         else return sec >= r.sec;
cannam@21: 00122     }
cannam@21: 00123 
cannam@21: 00124     bool operator<=(const RealTime &r) const {
cannam@21: 00125         if (sec == r.sec) return nsec <= r.nsec;
cannam@21: 00126         else return sec <= r.sec;
cannam@21: 00127     }
cannam@21: 00128 
cannam@21: 00129     RealTime operator/(int d) const;
cannam@21: 00130 
cannam@21: 00134     double operator/(const RealTime &r) const;
cannam@21: 00135 
cannam@21: 00140     std::string toString() const;
cannam@21: 00141 
cannam@21: 00146     std::string toText(bool fixedDp = false) const;
cannam@21: 00147 
cannam@21: 00151     static long realTime2Frame(const RealTime &r, unsigned int sampleRate);
cannam@21: 00152 
cannam@21: 00156     static RealTime frame2RealTime(long frame, unsigned int sampleRate);
cannam@21: 00157 
cannam@21: 00158     static const RealTime zeroTime;
cannam@21: 00159 };
cannam@21: 00160 
cannam@21: 00161 std::ostream &operator<<(std::ostream &out, const RealTime &rt);
cannam@21: 00162 
cannam@21: 00163 }
cannam@21: 00164 
cannam@21: 00165 _VAMP_SDK_PLUGSPACE_END(RealTime.h)
cannam@21: 00166     
cannam@21: 00167 #endif
cannam@21: