Chris@49: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@52:     Sonic Visualiser
Chris@52:     An audio file viewer and annotation editor.
Chris@52:     Centre for Digital Music, Queen Mary, University of London.
Chris@0:     
Chris@52:     This program is free software; you can redistribute it and/or
Chris@52:     modify it under the terms of the GNU General Public License as
Chris@52:     published by the Free Software Foundation; either version 2 of the
Chris@52:     License, or (at your option) any later version.  See the file
Chris@52:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: /*
Chris@0:    This is a modified version of a source file from the 
Chris@0:    Rosegarden MIDI and audio sequencer and notation editor.
Chris@17:    This file copyright 2000-2006 Chris Cannam.
Chris@0: */
Chris@0: 
Chris@1070: #ifndef SV_REAL_TIME_H
Chris@1070: #define SV_REAL_TIME_H
Chris@0: 
Chris@1038: #include "BaseTypes.h"
Chris@1038: 
Chris@0: #include <iostream>
Chris@0: #include <string>
Chris@0: 
Chris@1040: #include <vamp-hostsdk/RealTime.h>
Chris@1040: 
Chris@1216: #ifdef _MSC_VER
Chris@1216: #include "winsock.h" // struct timeval is in here
Chris@1216: #else
Chris@1216: #include "sys/time.h"
Chris@1216: #endif
Chris@26: 
Chris@0: /**
Chris@0:  * RealTime represents time values to nanosecond precision
Chris@0:  * with accurate arithmetic and frame-rate conversion functions.
Chris@0:  */
Chris@0: 
Chris@0: struct RealTime
Chris@0: {
Chris@0:     int sec;
Chris@0:     int nsec;
Chris@0: 
Chris@0:     int usec() const { return nsec / 1000; }
Chris@0:     int msec() const { return nsec / 1000000; }
Chris@0: 
Chris@0:     RealTime(): sec(0), nsec(0) {}
Chris@0:     RealTime(int s, int n);
Chris@0: 
Chris@0:     RealTime(const RealTime &r) :
Chris@1429:         sec(r.sec), nsec(r.nsec) { }
Chris@0: 
Chris@1040:     RealTime(const Vamp::RealTime &r) :
Chris@1429:         sec(r.sec), nsec(r.nsec) { }
Chris@1040: 
Chris@26:     static RealTime fromSeconds(double sec);
Chris@26:     static RealTime fromMilliseconds(int msec);
Chris@1541:     static RealTime fromMicroseconds(int usec);
Chris@26:     static RealTime fromTimeval(const struct timeval &);
Chris@439:     static RealTime fromXsdDuration(std::string xsdd);
Chris@439: 
Chris@439:     double toDouble() const;
Chris@1040:     Vamp::RealTime toVampRealTime() const { return Vamp::RealTime(sec, nsec); }
Chris@26: 
Chris@0:     RealTime &operator=(const RealTime &r) {
Chris@1429:         sec = r.sec; nsec = r.nsec; return *this;
Chris@0:     }
Chris@0: 
Chris@0:     RealTime operator+(const RealTime &r) const {
Chris@1429:         return RealTime(sec + r.sec, nsec + r.nsec);
Chris@0:     }
Chris@0:     RealTime operator-(const RealTime &r) const {
Chris@1429:         return RealTime(sec - r.sec, nsec - r.nsec);
Chris@0:     }
Chris@0:     RealTime operator-() const {
Chris@1429:         return RealTime(-sec, -nsec);
Chris@0:     }
Chris@0: 
Chris@0:     bool operator <(const RealTime &r) const {
Chris@1429:         if (sec == r.sec) return nsec < r.nsec;
Chris@1429:         else return sec < r.sec;
Chris@0:     }
Chris@0: 
Chris@0:     bool operator >(const RealTime &r) const {
Chris@1429:         if (sec == r.sec) return nsec > r.nsec;
Chris@1429:         else return sec > r.sec;
Chris@0:     }
Chris@0: 
Chris@0:     bool operator==(const RealTime &r) const {
Chris@0:         return (sec == r.sec && nsec == r.nsec);
Chris@0:     }
Chris@0:  
Chris@0:     bool operator!=(const RealTime &r) const {
Chris@0:         return !(r == *this);
Chris@0:     }
Chris@0:  
Chris@0:     bool operator>=(const RealTime &r) const {
Chris@0:         if (sec == r.sec) return nsec >= r.nsec;
Chris@0:         else return sec >= r.sec;
Chris@0:     }
Chris@0: 
Chris@0:     bool operator<=(const RealTime &r) const {
Chris@0:         if (sec == r.sec) return nsec <= r.nsec;
Chris@0:         else return sec <= r.sec;
Chris@0:     }
Chris@0: 
Chris@183:     RealTime operator*(int m) const;
Chris@0:     RealTime operator/(int d) const;
Chris@0: 
Chris@378:     RealTime operator*(double m) const;
Chris@378:     RealTime operator/(double d) const;
Chris@378: 
Chris@350:     /**
Chris@350:      * Return the ratio of two times.
Chris@350:      */
Chris@0:     double operator/(const RealTime &r) const;
Chris@0: 
Chris@350:     /**
Chris@350:      * Return a human-readable debug-type string to full precision
Chris@350:      * (probably not a format to show to a user directly).  If align
Chris@350:      * is true, prepend " " to the start of positive values so that
Chris@350:      * they line up with negative ones (which start with "-").
Chris@350:      */ 
Chris@121:     std::string toString(bool align = false) const;
Chris@0: 
Chris@350:     /**
Chris@350:      * Convert a string as obtained from toString back to a RealTime
Chris@350:      * object.
Chris@350:      */
Chris@350:     static RealTime fromString(std::string);
Chris@350: 
Chris@350:     /**
Chris@1070:      * Return a user-readable string to the nearest millisecond,
Chris@1070:      * typically in a form like HH:MM:SS.mmm. The exact format will
Chris@1070:      * depend on the application preferences for time display
Chris@1070:      * precision and hours:minutes:seconds format -- this function
Chris@1070:      * simply dispatches to toMSText or toFrameText with appropriate
Chris@1070:      * arguments depending on the preferences.
Chris@1070:      *
Chris@1070:      * If fixedDp is true, the result will be padded to 3 dp,
Chris@1070:      * i.e. millisecond resolution, even if the number of milliseconds
Chris@1070:      * is a multiple of 10.
Chris@350:      */
Chris@0:     std::string toText(bool fixedDp = false) const;
Chris@0: 
Chris@1070:     /** 
Chris@1070:      * Return a user-readable string to the nearest millisecond.
Chris@1070:      *
Chris@1070:      * If fixedDp is true, the result will be padded to 3 dp,
Chris@1070:      * i.e. millisecond resolution, even if the number of milliseconds
Chris@1070:      * is a multiple of 10.
Chris@1070:      *
Chris@1070:      * If hms is true, results may be returned in the form
Chris@1070:      * HH:MM:SS.mmm (if the time is large enough). If hms is false,
Chris@1070:      * the result will always be a (fractional) number of seconds.
Chris@1070:      *
Chris@1070:      * Unlike toText, this function does not depend on the application
Chris@1070:      * preferences.
Chris@1070:      */
Chris@1070:     std::string toMSText(bool fixedDp, bool hms) const;
Chris@1070:     
Chris@350:     /**
Chris@612:      * Return a user-readable string in which seconds are divided into
Chris@612:      * frames (presumably at a lower frame rate than audio rate,
Chris@612:      * e.g. 24 or 25 video frames), in a form like HH:MM:SS:FF.  fps
Chris@612:      * gives the number of frames per second, and must be integral
Chris@612:      * (29.97 not supported).
Chris@1070:      *
Chris@1070:      * Unlike toText, this function does not depend on the application
Chris@1070:      * preferences.
Chris@612:      */
Chris@1070:     std::string toFrameText(int fps, bool hms) const;
Chris@612: 
Chris@612:     /**
Chris@1070:      * Return a user-readable string to the nearest second, in H:M:S
Chris@1070:      * form. Does not include milliseconds or frames. The result will
Chris@1070:      * be suffixed "s" if it contains only seconds (no hours or
Chris@1070:      * minutes).
Chris@1070:      *
Chris@1070:      * Unlike toText, this function does not depend on the application
Chris@1070:      * preferences.
Chris@350:      */
Chris@247:     std::string toSecText() const;
Chris@247: 
Chris@350:     /**
Chris@494:      * Return a string in xsd:duration format.
Chris@494:      */
Chris@494:     std::string toXsdDuration() const;
Chris@494: 
Chris@494:     /**
Chris@350:      * Convert a RealTime into a sample frame at the given sample rate.
Chris@350:      */
Chris@1040:     static sv_frame_t realTime2Frame(const RealTime &r, sv_samplerate_t sampleRate);
Chris@350: 
Chris@350:     /**
Chris@350:      * Convert a sample frame at the given sample rate into a RealTime.
Chris@350:      */
Chris@1040:     static RealTime frame2RealTime(sv_frame_t frame, sv_samplerate_t sampleRate);
Chris@0: 
Chris@0:     static const RealTime zeroTime;
Chris@0: };
Chris@0: 
Chris@0: std::ostream &operator<<(std::ostream &out, const RealTime &rt);
Chris@0:     
Chris@0: #endif