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@0: #include <iostream>
Chris@0:
Chris@405: #include <cstdlib>
Chris@0: #include <sstream>
Chris@0:
Chris@150: #include "RealTime.h"
Chris@0:
Chris@843: #include "Debug.h"
Chris@843:
Chris@612: #include "Preferences.h"
Chris@612:
Chris@0: // A RealTime consists of two ints that must be at least 32 bits each.
Chris@0: // A signed 32-bit int can store values exceeding +/- 2 billion. This
Chris@0: // means we can safely use our lower int for nanoseconds, as there are
Chris@0: // 1 billion nanoseconds in a second and we need to handle double that
Chris@0: // because of the implementations of addition etc that we use.
Chris@0: //
Chris@0: // The maximum valid RealTime on a 32-bit system is somewhere around
Chris@0: // 68 years: 999999999 nanoseconds longer than the classic Unix epoch.
Chris@0:
Chris@0: #define ONE_BILLION 1000000000
Chris@0:
Chris@0: RealTime::RealTime(int s, int n) :
Chris@0: sec(s), nsec(n)
Chris@0: {
Chris@0: if (sec == 0) {
Chris@0: while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
Chris@0: while (nsec >= ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
Chris@0: } else if (sec < 0) {
Chris@0: while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
Chris@1268: while (nsec > 0 && sec < 0) { nsec -= ONE_BILLION; ++sec; }
Chris@0: } else {
Chris@0: while (nsec >= ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
Chris@1268: while (nsec < 0 && sec > 0) { nsec += ONE_BILLION; --sec; }
Chris@0: }
Chris@0: }
Chris@0:
Chris@26: RealTime
Chris@26: RealTime::fromSeconds(double sec)
Chris@26: {
Chris@1012: if (sec >= 0) {
Chris@1012: return RealTime(int(sec), int((sec - int(sec)) * ONE_BILLION + 0.5));
Chris@1012: } else {
Chris@1012: return -fromSeconds(-sec);
Chris@1012: }
Chris@26: }
Chris@26:
Chris@26: RealTime
Chris@26: RealTime::fromMilliseconds(int msec)
Chris@26: {
Chris@26: return RealTime(msec / 1000, (msec % 1000) * 1000000);
Chris@26: }
Chris@26:
Chris@26: RealTime
Chris@26: RealTime::fromTimeval(const struct timeval &tv)
Chris@26: {
Chris@1038: return RealTime(int(tv.tv_sec), int(tv.tv_usec * 1000));
Chris@26: }
Chris@0:
Chris@439: RealTime
Chris@439: RealTime::fromXsdDuration(std::string xsdd)
Chris@439: {
Chris@439: RealTime t;
Chris@439:
Chris@439: int year = 0, month = 0, day = 0, hour = 0, minute = 0;
Chris@439: double second = 0.0;
Chris@439:
Chris@439: int i = 0;
Chris@439:
Chris@439: const char *s = xsdd.c_str();
Chris@1038: int len = int(xsdd.length());
Chris@439:
Chris@439: bool negative = false, afterT = false;
Chris@439:
Chris@439: while (i < len) {
Chris@439:
Chris@439: if (s[i] == '-') {
Chris@439: if (i == 0) negative = true;
Chris@439: ++i;
Chris@439: continue;
Chris@439: }
Chris@439:
Chris@439: double value = 0.0;
Chris@439: char *eptr = 0;
Chris@439:
Chris@439: if (isdigit(s[i]) || s[i] == '.') {
Chris@439: value = strtod(&s[i], &eptr);
Chris@1038: i = int(eptr - s);
Chris@439: }
Chris@439:
Chris@439: if (i == len) break;
Chris@439:
Chris@439: switch (s[i]) {
Chris@439: case 'Y': year = int(value + 0.1); break;
Chris@439: case 'D': day = int(value + 0.1); break;
Chris@439: case 'H': hour = int(value + 0.1); break;
Chris@439: case 'M':
Chris@439: if (afterT) minute = int(value + 0.1);
Chris@439: else month = int(value + 0.1);
Chris@439: break;
Chris@439: case 'S':
Chris@439: second = value;
Chris@439: break;
Chris@439: case 'T': afterT = true; break;
Chris@439: };
Chris@439:
Chris@439: ++i;
Chris@439: }
Chris@439:
Chris@439: if (year > 0) {
Chris@843: 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;
Chris@439: t = t + RealTime(year * 31556952, 0);
Chris@439: }
Chris@439:
Chris@439: if (month > 0) {
Chris@843: 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;
Chris@439: t = t + RealTime(month * 2629746, 0);
Chris@439: }
Chris@439:
Chris@439: if (day > 0) {
Chris@439: t = t + RealTime(day * 86400, 0);
Chris@439: }
Chris@439:
Chris@439: if (hour > 0) {
Chris@439: t = t + RealTime(hour * 3600, 0);
Chris@439: }
Chris@439:
Chris@439: if (minute > 0) {
Chris@439: t = t + RealTime(minute * 60, 0);
Chris@439: }
Chris@439:
Chris@439: t = t + fromSeconds(second);
Chris@439:
Chris@928: if (negative) {
Chris@928: return -t;
Chris@928: } else {
Chris@928: return t;
Chris@928: }
Chris@439: }
Chris@439:
Chris@439: double
Chris@439: RealTime::toDouble() const
Chris@439: {
Chris@439: double d = sec;
Chris@439: d += double(nsec) / double(ONE_BILLION);
Chris@439: return d;
Chris@439: }
Chris@439:
Chris@0: std::ostream &operator<<(std::ostream &out, const RealTime &rt)
Chris@0: {
Chris@0: if (rt < RealTime::zeroTime) {
Chris@0: out << "-";
Chris@0: } else {
Chris@0: out << " ";
Chris@0: }
Chris@0:
Chris@0: int s = (rt.sec < 0 ? -rt.sec : rt.sec);
Chris@0: int n = (rt.nsec < 0 ? -rt.nsec : rt.nsec);
Chris@0:
Chris@0: out << s << ".";
Chris@0:
Chris@0: int nn(n);
Chris@0: if (nn == 0) out << "00000000";
Chris@0: else while (nn < (ONE_BILLION / 10)) {
Chris@0: out << "0";
Chris@0: nn *= 10;
Chris@0: }
Chris@0:
Chris@0: out << n << "R";
Chris@0: return out;
Chris@0: }
Chris@0:
Chris@0: std::string
Chris@121: RealTime::toString(bool align) const
Chris@0: {
Chris@0: std::stringstream out;
Chris@0: out << *this;
Chris@0:
Chris@0: std::string s = out.str();
Chris@0:
Chris@121: if (!align && *this >= RealTime::zeroTime) {
Chris@121: // remove leading " "
Chris@121: s = s.substr(1, s.length() - 1);
Chris@121: }
Chris@121:
Chris@0: // remove trailing R
Chris@0: return s.substr(0, s.length() - 1);
Chris@0: }
Chris@0:
Chris@350: RealTime
Chris@350: RealTime::fromString(std::string s)
Chris@350: {
Chris@350: bool negative = false;
Chris@957: int section = 0;
Chris@350: std::string ssec, snsec;
Chris@350:
Chris@350: for (size_t i = 0; i < s.length(); ++i) {
Chris@350:
Chris@350: char c = s[i];
Chris@350: if (isspace(c)) continue;
Chris@350:
Chris@350: if (section == 0) {
Chris@350:
Chris@350: if (c == '-') negative = true;
Chris@350: else if (isdigit(c)) { section = 1; ssec += c; }
Chris@350: else if (c == '.') section = 2;
Chris@350: else break;
Chris@350:
Chris@350: } else if (section == 1) {
Chris@350:
Chris@350: if (c == '.') section = 2;
Chris@350: else if (isdigit(c)) ssec += c;
Chris@350: else break;
Chris@350:
Chris@350: } else if (section == 2) {
Chris@350:
Chris@350: if (isdigit(c)) snsec += c;
Chris@350: else break;
Chris@350: }
Chris@350: }
Chris@350:
Chris@350: while (snsec.length() < 8) snsec += '0';
Chris@350:
Chris@350: int sec = atoi(ssec.c_str());
Chris@350: int nsec = atoi(snsec.c_str());
Chris@350: if (negative) sec = -sec;
Chris@350:
Chris@690: // SVDEBUG << "RealTime::fromString: string " << s << " -> "
Chris@687: // << sec << " sec, " << nsec << " nsec" << endl;
Chris@350:
Chris@350: return RealTime(sec, nsec);
Chris@350: }
Chris@350:
Chris@0: std::string
Chris@0: RealTime::toText(bool fixedDp) const
Chris@0: {
Chris@247: if (*this < RealTime::zeroTime) return "-" + (-*this).toText(fixedDp);
Chris@0:
Chris@612: Preferences *p = Preferences::getInstance();
Chris@1070: bool hms = true;
Chris@1070:
Chris@612: if (p) {
Chris@1070: hms = p->getShowHMS();
Chris@612: int fps = 0;
Chris@612: switch (p->getTimeToTextMode()) {
Chris@612: case Preferences::TimeToTextMs: break;
Chris@612: case Preferences::TimeToTextUs: fps = 1000000; break;
Chris@612: case Preferences::TimeToText24Frame: fps = 24; break;
Chris@612: case Preferences::TimeToText25Frame: fps = 25; break;
Chris@612: case Preferences::TimeToText30Frame: fps = 30; break;
Chris@612: case Preferences::TimeToText50Frame: fps = 50; break;
Chris@612: case Preferences::TimeToText60Frame: fps = 60; break;
Chris@612: }
Chris@1070: if (fps != 0) return toFrameText(fps, hms);
Chris@612: }
Chris@612:
Chris@1070: return toMSText(fixedDp, hms);
Chris@1070: }
Chris@0:
Chris@1070: static void
Chris@1070: writeSecPart(std::stringstream &out, bool hms, int sec)
Chris@1070: {
Chris@1070: if (hms) {
Chris@1031: if (sec >= 3600) {
Chris@1031: out << (sec / 3600) << ":";
Chris@1031: }
Chris@1031:
Chris@1031: if (sec >= 60) {
Chris@1070: int minutes = (sec % 3600) / 60;
Chris@1070: if (sec >= 3600 && minutes < 10) out << "0";
Chris@1070: out << minutes << ":";
Chris@1031: }
Chris@1031:
Chris@1031: if (sec >= 10) {
Chris@1031: out << ((sec % 60) / 10);
Chris@1031: }
Chris@1031:
Chris@1031: out << (sec % 10);
Chris@1031:
Chris@1031: } else {
Chris@1031: out << sec;
Chris@0: }
Chris@1070: }
Chris@1070:
Chris@1070: std::string
Chris@1070: RealTime::toMSText(bool fixedDp, bool hms) const
Chris@1070: {
Chris@1070: if (*this < RealTime::zeroTime) return "-" + (-*this).toMSText(fixedDp, hms);
Chris@1070:
Chris@1070: std::stringstream out;
Chris@1070:
Chris@1070: writeSecPart(out, hms, sec);
Chris@0:
Chris@0: int ms = msec();
Chris@0:
Chris@0: if (ms != 0) {
Chris@0: out << ".";
Chris@0: out << (ms / 100);
Chris@0: ms = ms % 100;
Chris@0: if (ms != 0) {
Chris@0: out << (ms / 10);
Chris@0: ms = ms % 10;
Chris@0: } else if (fixedDp) {
Chris@0: out << "0";
Chris@0: }
Chris@0: if (ms != 0) {
Chris@0: out << ms;
Chris@0: } else if (fixedDp) {
Chris@0: out << "0";
Chris@0: }
Chris@0: } else if (fixedDp) {
Chris@0: out << ".000";
Chris@0: }
Chris@0:
Chris@612: std::string s = out.str();
Chris@0:
Chris@612: return s;
Chris@612: }
Chris@612:
Chris@612: std::string
Chris@1070: RealTime::toFrameText(int fps, bool hms) const
Chris@612: {
Chris@1070: if (*this < RealTime::zeroTime) return "-" + (-*this).toFrameText(fps, hms);
Chris@1031:
Chris@612: std::stringstream out;
Chris@612:
Chris@1070: writeSecPart(out, hms, sec);
Chris@1031:
Chris@1070: // avoid rounding error if fps does not divide into ONE_BILLION
Chris@1070: int64_t fbig = nsec;
Chris@1070: fbig *= fps;
Chris@1070: int f = int(fbig / ONE_BILLION);
Chris@612:
Chris@612: int div = 1;
Chris@612: int n = fps - 1;
Chris@612: while ((n = n / 10)) {
Chris@612: div *= 10;
Chris@612: }
Chris@612:
Chris@612: out << ":";
Chris@612:
Chris@843: // cerr << "div = " << div << ", f = "<< f << endl;
Chris@612:
Chris@612: while (div) {
Chris@612: int d = (f / div) % 10;
Chris@612: out << d;
Chris@612: div /= 10;
Chris@612: }
Chris@612:
Chris@0: std::string s = out.str();
Chris@0:
Chris@843: // cerr << "converted " << toString() << " to " << s << endl;
Chris@612:
Chris@0: return s;
Chris@0: }
Chris@0:
Chris@247: std::string
Chris@247: RealTime::toSecText() const
Chris@247: {
Chris@247: if (*this < RealTime::zeroTime) return "-" + (-*this).toSecText();
Chris@247:
Chris@247: std::stringstream out;
Chris@247:
Chris@1070: writeSecPart(out, true, sec);
Chris@247:
Chris@247: if (sec < 60) {
Chris@247: out << "s";
Chris@247: }
Chris@247:
Chris@247: std::string s = out.str();
Chris@247:
Chris@247: return s;
Chris@247: }
Chris@247:
Chris@494: std::string
Chris@494: RealTime::toXsdDuration() const
Chris@494: {
Chris@494: std::string s = "PT" + toString(false) + "S";
Chris@494: return s;
Chris@494: }
Chris@494:
Chris@183: RealTime
Chris@183: RealTime::operator*(int m) const
Chris@183: {
Chris@183: double t = (double(nsec) / ONE_BILLION) * m;
Chris@183: t += sec * m;
Chris@183: return fromSeconds(t);
Chris@183: }
Chris@0:
Chris@0: RealTime
Chris@0: RealTime::operator/(int d) const
Chris@0: {
Chris@0: int secdiv = sec / d;
Chris@0: int secrem = sec % d;
Chris@0:
Chris@0: double nsecdiv = (double(nsec) + ONE_BILLION * double(secrem)) / d;
Chris@0:
Chris@0: return RealTime(secdiv, int(nsecdiv + 0.5));
Chris@0: }
Chris@0:
Chris@378: RealTime
Chris@378: RealTime::operator*(double m) const
Chris@378: {
Chris@378: double t = (double(nsec) / ONE_BILLION) * m;
Chris@378: t += sec * m;
Chris@378: return fromSeconds(t);
Chris@378: }
Chris@378:
Chris@378: RealTime
Chris@378: RealTime::operator/(double d) const
Chris@378: {
Chris@378: double t = (double(nsec) / ONE_BILLION) / d;
Chris@378: t += sec / d;
Chris@378: return fromSeconds(t);
Chris@378: }
Chris@378:
Chris@0: double
Chris@0: RealTime::operator/(const RealTime &r) const
Chris@0: {
Chris@0: double lTotal = double(sec) * ONE_BILLION + double(nsec);
Chris@0: double rTotal = double(r.sec) * ONE_BILLION + double(r.nsec);
Chris@0:
Chris@0: if (rTotal == 0) return 0.0;
Chris@0: else return lTotal/rTotal;
Chris@0: }
Chris@0:
Chris@1040: static RealTime
Chris@1040: frame2RealTime_i(sv_frame_t frame, sv_frame_t iSampleRate)
Chris@1040: {
Chris@1040: if (frame < 0) return -frame2RealTime_i(-frame, iSampleRate);
Chris@1040:
Chris@1262: int sec = int(frame / iSampleRate);
Chris@1040: frame -= sec * iSampleRate;
Chris@1262: int nsec = int((double(frame) / double(iSampleRate)) * ONE_BILLION + 0.5);
Chris@1262: // Use ctor here instead of setting data members directly to
Chris@1262: // ensure nsec > ONE_BILLION is handled properly. It's extremely
Chris@1262: // unlikely, but not impossible.
Chris@1262: return RealTime(sec, nsec);
Chris@1040: }
Chris@1040:
Chris@1038: sv_frame_t
Chris@1040: RealTime::realTime2Frame(const RealTime &time, sv_samplerate_t sampleRate)
Chris@0: {
Chris@0: if (time < zeroTime) return -realTime2Frame(-time, sampleRate);
Chris@1262: double s = time.sec + double(time.nsec) / 1000000000.0;
Chris@1262: return sv_frame_t(s * sampleRate + 0.5);
Chris@0: }
Chris@0:
Chris@0: RealTime
Chris@1040: RealTime::frame2RealTime(sv_frame_t frame, sv_samplerate_t sampleRate)
Chris@0: {
Chris@1040: if (sampleRate == double(int(sampleRate))) {
Chris@1040: return frame2RealTime_i(frame, int(sampleRate));
Chris@1040: }
Chris@0:
Chris@1040: double sec = double(frame) / sampleRate;
Chris@1040: return fromSeconds(sec);
Chris@0: }
Chris@0:
Chris@0: const RealTime RealTime::zeroTime(0,0);
Chris@0: