8260c0f4e05b/code-doc/vamp-sdk_2RealTime_8h_source.html

00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
cannam@50: 00002
cannam@50: 00003 /*
cannam@50: 00004     Vamp
cannam@50: 00005
cannam@50: 00006     An API for audio analysis and feature extraction plugins.
cannam@50: 00007
cannam@50: 00008     Centre for Digital Music, Queen Mary, University of London.
cannam@50: 00009     Copyright 2006 Chris Cannam.
cannam@50: 00010
cannam@50: 00011     Permission is hereby granted, free of charge, to any person
cannam@50: 00012     obtaining a copy of this software and associated documentation
cannam@50: 00013     files (the "Software"), to deal in the Software without
cannam@50: 00014     restriction, including without limitation the rights to use, copy,
cannam@50: 00015     modify, merge, publish, distribute, sublicense, and/or sell copies
cannam@50: 00016     of the Software, and to permit persons to whom the Software is
cannam@50: 00017     furnished to do so, subject to the following conditions:
cannam@50: 00018
cannam@50: 00019     The above copyright notice and this permission notice shall be
cannam@50: 00020     included in all copies or substantial portions of the Software.
cannam@50: 00021
cannam@50: 00022     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
cannam@50: 00023     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
cannam@50: 00024     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
cannam@50: 00025     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
cannam@50: 00026     ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
cannam@50: 00027     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
cannam@50: 00028     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cannam@50: 00029
cannam@50: 00030     Except as contained in this notice, the names of the Centre for
cannam@50: 00031     Digital Music; Queen Mary, University of London; and Chris Cannam
cannam@50: 00032     shall not be used in advertising or otherwise to promote the sale,
cannam@50: 00033     use or other dealings in this Software without prior written
cannam@50: 00034     authorization.
cannam@50: 00035 */
cannam@50: 00036
cannam@50: 00037 /*
cannam@50: 00038    This is a modified version of a source file from the
cannam@50: 00039    Rosegarden MIDI and audio sequencer and notation editor.
cannam@50: 00040    This file copyright 2000-2006 Chris Cannam.
cannam@50: 00041    Relicensed by the author as detailed above.
cannam@50: 00042 */
cannam@50: 00043
cannam@50: 00044 #ifndef _VAMP_REAL_TIME_H_
cannam@50: 00045 #define _VAMP_REAL_TIME_H_
cannam@50: 00046
cannam@50: 00047 #include <iostream>
cannam@50: 00048 #include <string>
cannam@50: 00049
cannam@50: 00050 #ifndef _WIN32
cannam@50: 00051 struct timeval;
cannam@50: 00052 #endif
cannam@50: 00053
cannam@50: 00054 #include "plugguard.h"
cannam@50: 00055 _VAMP_SDK_PLUGSPACE_BEGIN(RealTime.h)
cannam@50: 00056
cannam@50: 00057 namespace Vamp {
cannam@50: 00058
cannam@50: 00066 struct RealTime
cannam@50: 00067 {
cannam@50: 00068     int sec;
cannam@50: 00069     int nsec;
cannam@50: 00070
cannam@50: 00071     int usec() const { return nsec / 1000; }
cannam@50: 00072     int msec() const { return nsec / 1000000; }
cannam@50: 00073
cannam@50: 00074     RealTime(): sec(0), nsec(0) {}
cannam@50: 00075     RealTime(int s, int n);
cannam@50: 00076
cannam@50: 00077     RealTime(const RealTime &r) :
cannam@50: 00078         sec(r.sec), nsec(r.nsec) { }
cannam@50: 00079
cannam@50: 00080     static RealTime fromSeconds(double sec);
cannam@50: 00081     static RealTime fromMilliseconds(int msec);
cannam@50: 00082
cannam@50: 00083 #ifndef _WIN32
cannam@50: 00084     static RealTime fromTimeval(const struct timeval &);
cannam@50: 00085 #endif
cannam@50: 00086
cannam@50: 00087     RealTime &operator=(const RealTime &r) {
cannam@50: 00088         sec = r.sec; nsec = r.nsec; return *this;
cannam@50: 00089     }
cannam@50: 00090
cannam@50: 00091     RealTime operator+(const RealTime &r) const {
cannam@50: 00092         return RealTime(sec + r.sec, nsec + r.nsec);
cannam@50: 00093     }
cannam@50: 00094     RealTime operator-(const RealTime &r) const {
cannam@50: 00095         return RealTime(sec - r.sec, nsec - r.nsec);
cannam@50: 00096     }
cannam@50: 00097     RealTime operator-() const {
cannam@50: 00098         return RealTime(-sec, -nsec);
cannam@50: 00099     }
cannam@50: 00100
cannam@50: 00101     bool operator <(const RealTime &r) const {
cannam@50: 00102         if (sec == r.sec) return nsec < r.nsec;
cannam@50: 00103         else return sec < r.sec;
cannam@50: 00104     }
cannam@50: 00105
cannam@50: 00106     bool operator >(const RealTime &r) const {
cannam@50: 00107         if (sec == r.sec) return nsec > r.nsec;
cannam@50: 00108         else return sec > r.sec;
cannam@50: 00109     }
cannam@50: 00110
cannam@50: 00111     bool operator==(const RealTime &r) const {
cannam@50: 00112         return (sec == r.sec && nsec == r.nsec);
cannam@50: 00113     }
cannam@50: 00114
cannam@50: 00115     bool operator!=(const RealTime &r) const {
cannam@50: 00116         return !(r == *this);
cannam@50: 00117     }
cannam@50: 00118
cannam@50: 00119     bool operator>=(const RealTime &r) const {
cannam@50: 00120         if (sec == r.sec) return nsec >= r.nsec;
cannam@50: 00121         else return sec >= r.sec;
cannam@50: 00122     }
cannam@50: 00123
cannam@50: 00124     bool operator<=(const RealTime &r) const {
cannam@50: 00125         if (sec == r.sec) return nsec <= r.nsec;
cannam@50: 00126         else return sec <= r.sec;
cannam@50: 00127     }
cannam@50: 00128
cannam@50: 00129     RealTime operator/(int d) const;
cannam@50: 00130
cannam@50: 00134     double operator/(const RealTime &r) const;
cannam@50: 00135
cannam@50: 00140     std::string toString() const;
cannam@50: 00141
cannam@50: 00146     std::string toText(bool fixedDp = false) const;
cannam@50: 00147
cannam@50: 00151     static long realTime2Frame(const RealTime &r, unsigned int sampleRate);
cannam@50: 00152
cannam@50: 00156     static RealTime frame2RealTime(long frame, unsigned int sampleRate);
cannam@50: 00157
cannam@50: 00158     static const RealTime zeroTime;
cannam@50: 00159 };
cannam@50: 00160
cannam@50: 00161 std::ostream &operator<<(std::ostream &out, const RealTime &rt);
cannam@50: 00162
cannam@50: 00163 }
cannam@50: 00164
cannam@50: 00165 _VAMP_SDK_PLUGSPACE_END(RealTime.h)
cannam@50: 00166
cannam@50: 00167 #endif
cannam@50: