Mercurial > hg > svcore
view base/RealTime.cpp @ 858:6b77fcc39723 tonioni
Add non-SV-preferred options
author | Chris Cannam |
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date | Wed, 04 Dec 2013 19:29:19 +0000 |
parents | e802e550a1f2 |
children | 0f363d0fbdc3 |
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/* -*- 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 "sys/time.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) { return RealTime(int(sec), int((sec - int(sec)) * ONE_BILLION + 0.5)); } RealTime RealTime::fromMilliseconds(int msec) { return RealTime(msec / 1000, (msec % 1000) * 1000000); } RealTime RealTime::fromTimeval(const struct timeval &tv) { return RealTime(tv.tv_sec, 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 = xsdd.length(); bool negative = false, afterT = false; int valstart = 0; 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] == '.') { valstart = i; value = strtod(&s[i], &eptr); i = 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); 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; bool 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(); if (p) { 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); } std::stringstream out; if (sec >= 3600) { out << (sec / 3600) << ":"; } if (sec >= 60) { out << (sec % 3600) / 60 << ":"; } if (sec >= 10) { out << ((sec % 60) / 10); } out << (sec % 10); 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) const { if (*this < RealTime::zeroTime) return "-" + (-*this).toFrameText(fps); std::stringstream out; if (sec >= 3600) { out << (sec / 3600) << ":"; } if (sec >= 60) { out << (sec % 3600) / 60 << ":"; } if (sec >= 10) { out << ((sec % 60) / 10); } out << (sec % 10); int f = nsec / (ONE_BILLION / fps); 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; if (sec >= 3600) { out << (sec / 3600) << ":"; } if (sec >= 60) { out << (sec % 3600) / 60 << ":"; } if (sec >= 10) { out << ((sec % 60) / 10); } out << (sec % 10); 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; } long RealTime::realTime2Frame(const RealTime &time, unsigned int sampleRate) { if (time < zeroTime) return -realTime2Frame(-time, sampleRate); double s = time.sec + double(time.nsec + 1) / 1000000000.0; return long(s * sampleRate); } RealTime RealTime::frame2RealTime(long frame, unsigned int sampleRate) { if (frame < 0) return -frame2RealTime(-frame, sampleRate); RealTime rt; rt.sec = frame / long(sampleRate); frame -= rt.sec * long(sampleRate); rt.nsec = (int)(((double(frame) * 1000000.0) / long(sampleRate)) * 1000.0); return rt; } const RealTime RealTime::zeroTime(0,0);