diff base/RealTimeSV.cpp @ 1238:dd49630e0d70 piper

Merge from branch project-file-rework

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/base/RealTimeSV.cpp	Fri Oct 28 15:19:12 2016 +0100
@@ -0,0 +1,480 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+/*
+   This is a modified version of a source file from the 
+   Rosegarden MIDI and audio sequencer and notation editor.
+   This file copyright 2000-2006 Chris Cannam.
+*/
+
+#include <iostream>
+
+#include <cstdlib>
+#include <sstream>
+
+#include "RealTime.h"
+
+#include "Debug.h"
+
+#include "Preferences.h"
+
+// A RealTime consists of two ints that must be at least 32 bits each.
+// A signed 32-bit int can store values exceeding +/- 2 billion.  This
+// means we can safely use our lower int for nanoseconds, as there are
+// 1 billion nanoseconds in a second and we need to handle double that
+// because of the implementations of addition etc that we use.
+//
+// The maximum valid RealTime on a 32-bit system is somewhere around
+// 68 years: 999999999 nanoseconds longer than the classic Unix epoch.
+
+#define ONE_BILLION 1000000000
+
+RealTime::RealTime(int s, int n) :
+    sec(s), nsec(n)
+{
+    if (sec == 0) {
+	while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
+	while (nsec >=  ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
+    } else if (sec < 0) {
+	while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
+	while (nsec > 0)             { nsec -= ONE_BILLION; ++sec; }
+    } else { 
+	while (nsec >=  ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
+	while (nsec < 0)             { nsec += ONE_BILLION; --sec; }
+    }
+}
+
+RealTime
+RealTime::fromSeconds(double sec)
+{
+    if (sec >= 0) {
+        return RealTime(int(sec), int((sec - int(sec)) * ONE_BILLION + 0.5));
+    } else {
+        return -fromSeconds(-sec);
+    }
+}
+
+RealTime
+RealTime::fromMilliseconds(int msec)
+{
+    return RealTime(msec / 1000, (msec % 1000) * 1000000);
+}
+
+RealTime
+RealTime::fromTimeval(const struct timeval &tv)
+{
+    return RealTime(int(tv.tv_sec), int(tv.tv_usec * 1000));
+}
+
+RealTime
+RealTime::fromXsdDuration(std::string xsdd)
+{
+    RealTime t;
+
+    int year = 0, month = 0, day = 0, hour = 0, minute = 0;
+    double second = 0.0;
+
+    int i = 0;
+
+    const char *s = xsdd.c_str();
+    int len = int(xsdd.length());
+
+    bool negative = false, afterT = false;
+
+    while (i < len) {
+
+        if (s[i] == '-') {
+            if (i == 0) negative = true;
+            ++i;
+            continue;
+        }
+
+        double value = 0.0;
+        char *eptr = 0;
+
+        if (isdigit(s[i]) || s[i] == '.') {
+            value = strtod(&s[i], &eptr);
+            i = int(eptr - s);
+        }
+
+        if (i == len) break;
+
+        switch (s[i]) {
+        case 'Y': year = int(value + 0.1); break;
+        case 'D': day  = int(value + 0.1); break;
+        case 'H': hour = int(value + 0.1); break;
+        case 'M':
+            if (afterT) minute = int(value + 0.1);
+            else month = int(value + 0.1);
+            break;
+        case 'S':
+            second = value;
+            break;
+        case 'T': afterT = true; break;
+        };
+
+        ++i;
+    }
+
+    if (year > 0) {
+        cerr << "WARNING: This xsd:duration (\"" << xsdd << "\") contains a non-zero year.\nWith no origin and a limited data size, I will treat a year as exactly 31556952\nseconds and you should expect overflow and/or poor results." << endl;
+        t = t + RealTime(year * 31556952, 0);
+    }
+
+    if (month > 0) {
+        cerr << "WARNING: This xsd:duration (\"" << xsdd << "\") contains a non-zero month.\nWith no origin and a limited data size, I will treat a month as exactly 2629746\nseconds and you should expect overflow and/or poor results." << endl;
+        t = t + RealTime(month * 2629746, 0);
+    }
+
+    if (day > 0) {
+        t = t + RealTime(day * 86400, 0);
+    }
+
+    if (hour > 0) {
+        t = t + RealTime(hour * 3600, 0);
+    }
+
+    if (minute > 0) {
+        t = t + RealTime(minute * 60, 0);
+    }
+
+    t = t + fromSeconds(second);
+
+    if (negative) {
+        return -t;
+    } else {
+        return t;
+    }
+}
+
+double
+RealTime::toDouble() const
+{
+    double d = sec;
+    d += double(nsec) / double(ONE_BILLION);
+    return d;
+}
+
+std::ostream &operator<<(std::ostream &out, const RealTime &rt)
+{
+    if (rt < RealTime::zeroTime) {
+	out << "-";
+    } else {
+	out << " ";
+    }
+
+    int s = (rt.sec < 0 ? -rt.sec : rt.sec);
+    int n = (rt.nsec < 0 ? -rt.nsec : rt.nsec);
+
+    out << s << ".";
+
+    int nn(n);
+    if (nn == 0) out << "00000000";
+    else while (nn < (ONE_BILLION / 10)) {
+	out << "0";
+	nn *= 10;
+    }
+    
+    out << n << "R";
+    return out;
+}
+
+std::string
+RealTime::toString(bool align) const
+{
+    std::stringstream out;
+    out << *this;
+    
+    std::string s = out.str();
+
+    if (!align && *this >= RealTime::zeroTime) {
+        // remove leading " "
+        s = s.substr(1, s.length() - 1);
+    }
+
+    // remove trailing R
+    return s.substr(0, s.length() - 1);
+}
+
+RealTime
+RealTime::fromString(std::string s)
+{
+    bool negative = false;
+    int section = 0;
+    std::string ssec, snsec;
+
+    for (size_t i = 0; i < s.length(); ++i) {
+
+        char c = s[i];
+        if (isspace(c)) continue;
+
+        if (section == 0) {
+
+            if (c == '-') negative = true;
+            else if (isdigit(c)) { section = 1; ssec += c; }
+            else if (c == '.') section = 2;
+            else break;
+
+        } else if (section == 1) {
+
+            if (c == '.') section = 2;
+            else if (isdigit(c)) ssec += c;
+            else break;
+
+        } else if (section == 2) {
+
+            if (isdigit(c)) snsec += c;
+            else break;
+        }
+    }
+
+    while (snsec.length() < 8) snsec += '0';
+
+    int sec = atoi(ssec.c_str());
+    int nsec = atoi(snsec.c_str());
+    if (negative) sec = -sec;
+
+//    SVDEBUG << "RealTime::fromString: string " << s << " -> "
+//              << sec << " sec, " << nsec << " nsec" << endl;
+
+    return RealTime(sec, nsec);
+}
+
+std::string
+RealTime::toText(bool fixedDp) const
+{
+    if (*this < RealTime::zeroTime) return "-" + (-*this).toText(fixedDp);
+
+    Preferences *p = Preferences::getInstance();
+    bool hms = true;
+    
+    if (p) {
+        hms = p->getShowHMS();
+        int fps = 0;
+        switch (p->getTimeToTextMode()) {
+        case Preferences::TimeToTextMs: break;
+        case Preferences::TimeToTextUs: fps = 1000000; break;
+        case Preferences::TimeToText24Frame: fps = 24; break;
+        case Preferences::TimeToText25Frame: fps = 25; break;
+        case Preferences::TimeToText30Frame: fps = 30; break;
+        case Preferences::TimeToText50Frame: fps = 50; break;
+        case Preferences::TimeToText60Frame: fps = 60; break;
+        }
+        if (fps != 0) return toFrameText(fps, hms);
+    }
+
+    return toMSText(fixedDp, hms);
+}
+
+static void
+writeSecPart(std::stringstream &out, bool hms, int sec)
+{
+    if (hms) {
+        if (sec >= 3600) {
+            out << (sec / 3600) << ":";
+        }
+
+        if (sec >= 60) {
+            int minutes = (sec % 3600) / 60;
+            if (sec >= 3600 && minutes < 10) out << "0";
+            out << minutes << ":";
+        }
+
+        if (sec >= 10) {
+            out << ((sec % 60) / 10);
+        }
+
+        out << (sec % 10);
+
+    } else {
+        out << sec;
+    }
+}
+
+std::string
+RealTime::toMSText(bool fixedDp, bool hms) const
+{
+    if (*this < RealTime::zeroTime) return "-" + (-*this).toMSText(fixedDp, hms);
+
+    std::stringstream out;
+
+    writeSecPart(out, hms, sec);
+    
+    int ms = msec();
+
+    if (ms != 0) {
+	out << ".";
+	out << (ms / 100);
+	ms = ms % 100;
+	if (ms != 0) {
+	    out << (ms / 10);
+	    ms = ms % 10;
+	} else if (fixedDp) {
+	    out << "0";
+	}
+	if (ms != 0) {
+	    out << ms;
+	} else if (fixedDp) {
+	    out << "0";
+	}
+    } else if (fixedDp) {
+	out << ".000";
+    }
+	
+    std::string s = out.str();
+
+    return s;
+}
+
+std::string
+RealTime::toFrameText(int fps, bool hms) const
+{
+    if (*this < RealTime::zeroTime) return "-" + (-*this).toFrameText(fps, hms);
+
+    std::stringstream out;
+
+    writeSecPart(out, hms, sec);
+
+    // avoid rounding error if fps does not divide into ONE_BILLION
+    int64_t fbig = nsec;
+    fbig *= fps;
+    int f = int(fbig / ONE_BILLION);
+
+    int div = 1;
+    int n = fps - 1;
+    while ((n = n / 10)) {
+        div *= 10;
+    }
+
+    out << ":";
+
+//    cerr << "div = " << div << ", f =  "<< f << endl;
+
+    while (div) {
+        int d = (f / div) % 10;
+        out << d;
+        div /= 10;
+    }
+	
+    std::string s = out.str();
+
+//    cerr << "converted " << toString() << " to " << s << endl;
+
+    return s;
+}
+
+std::string
+RealTime::toSecText() const
+{
+    if (*this < RealTime::zeroTime) return "-" + (-*this).toSecText();
+
+    std::stringstream out;
+
+    writeSecPart(out, true, sec);
+    
+    if (sec < 60) {
+        out << "s";
+    }
+
+    std::string s = out.str();
+
+    return s;
+}
+
+std::string
+RealTime::toXsdDuration() const
+{
+    std::string s = "PT" + toString(false) + "S";
+    return s;
+}
+
+RealTime
+RealTime::operator*(int m) const
+{
+    double t = (double(nsec) / ONE_BILLION) * m;
+    t += sec * m;
+    return fromSeconds(t);
+}
+
+RealTime
+RealTime::operator/(int d) const
+{
+    int secdiv = sec / d;
+    int secrem = sec % d;
+
+    double nsecdiv = (double(nsec) + ONE_BILLION * double(secrem)) / d;
+    
+    return RealTime(secdiv, int(nsecdiv + 0.5));
+}
+
+RealTime
+RealTime::operator*(double m) const
+{
+    double t = (double(nsec) / ONE_BILLION) * m;
+    t += sec * m;
+    return fromSeconds(t);
+}
+
+RealTime
+RealTime::operator/(double d) const
+{
+    double t = (double(nsec) / ONE_BILLION) / d;
+    t += sec / d;
+    return fromSeconds(t);
+}
+
+double 
+RealTime::operator/(const RealTime &r) const
+{
+    double lTotal = double(sec) * ONE_BILLION + double(nsec);
+    double rTotal = double(r.sec) * ONE_BILLION + double(r.nsec);
+    
+    if (rTotal == 0) return 0.0;
+    else return lTotal/rTotal;
+}
+
+static RealTime
+frame2RealTime_i(sv_frame_t frame, sv_frame_t iSampleRate)
+{
+    if (frame < 0) return -frame2RealTime_i(-frame, iSampleRate);
+
+    RealTime rt;
+    sv_frame_t sec = frame / iSampleRate;
+    rt.sec = int(sec);
+    frame -= sec * iSampleRate;
+    rt.nsec = (int)(((double(frame) * 1000000.0) / double(iSampleRate)) * 1000.0);
+    return rt;
+}
+
+sv_frame_t
+RealTime::realTime2Frame(const RealTime &time, sv_samplerate_t sampleRate)
+{
+    if (time < zeroTime) return -realTime2Frame(-time, sampleRate);
+    double s = time.sec + double(time.nsec + 1) / 1000000000.0;
+    return sv_frame_t(s * sampleRate);
+}
+
+RealTime
+RealTime::frame2RealTime(sv_frame_t frame, sv_samplerate_t sampleRate)
+{
+    if (sampleRate == double(int(sampleRate))) {
+        return frame2RealTime_i(frame, int(sampleRate));
+    }
+
+    double sec = double(frame) / sampleRate;
+    return fromSeconds(sec);
+}
+
+const RealTime RealTime::zeroTime(0,0);
+