cannam@0: cannam@0:
cannam@0:00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ cannam@0: 00002 cannam@0: 00003 /* cannam@0: 00004 Vamp cannam@0: 00005 cannam@0: 00006 An API for audio analysis and feature extraction plugins. cannam@0: 00007 cannam@0: 00008 Centre for Digital Music, Queen Mary, University of London. cannam@0: 00009 Copyright 2006 Chris Cannam. cannam@0: 00010 cannam@0: 00011 Permission is hereby granted, free of charge, to any person cannam@0: 00012 obtaining a copy of this software and associated documentation cannam@0: 00013 files (the "Software"), to deal in the Software without cannam@0: 00014 restriction, including without limitation the rights to use, copy, cannam@0: 00015 modify, merge, publish, distribute, sublicense, and/or sell copies cannam@0: 00016 of the Software, and to permit persons to whom the Software is cannam@0: 00017 furnished to do so, subject to the following conditions: cannam@0: 00018 cannam@0: 00019 The above copyright notice and this permission notice shall be cannam@0: 00020 included in all copies or substantial portions of the Software. cannam@0: 00021 cannam@0: 00022 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, cannam@0: 00023 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF cannam@0: 00024 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND cannam@0: 00025 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR cannam@0: 00026 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF cannam@0: 00027 CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION cannam@0: 00028 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. cannam@0: 00029 cannam@0: 00030 Except as contained in this notice, the names of the Centre for cannam@0: 00031 Digital Music; Queen Mary, University of London; and Chris Cannam cannam@0: 00032 shall not be used in advertising or otherwise to promote the sale, cannam@0: 00033 use or other dealings in this Software without prior written cannam@0: 00034 authorization. cannam@0: 00035 */ cannam@0: 00036 cannam@0: 00037 /* cannam@0: 00038 This is a modified version of a source file from the cannam@0: 00039 Rosegarden MIDI and audio sequencer and notation editor. cannam@0: 00040 This file copyright 2000-2006 Chris Cannam. cannam@0: 00041 Relicensed by the author as detailed above. cannam@0: 00042 */ cannam@0: 00043 cannam@0: 00044 #include <iostream> cannam@0: 00045 cannam@0: 00046 #if (__GNUC__ < 3) cannam@0: 00047 #include <strstream> cannam@0: 00048 #define stringstream strstream cannam@0: 00049 #else cannam@0: 00050 #include <sstream> cannam@0: 00051 #endif cannam@0: 00052 cannam@0: 00053 using std::cerr; cannam@0: 00054 using std::endl; cannam@0: 00055 cannam@0: 00056 #include "RealTime.h" cannam@0: 00057 cannam@0: 00058 #ifndef _WIN32 cannam@0: 00059 #include <sys/time.h> cannam@0: 00060 #endif cannam@0: 00061 cannam@0: 00062 namespace Vamp { cannam@0: 00063 cannam@0: 00064 // A RealTime consists of two ints that must be at least 32 bits each. cannam@0: 00065 // A signed 32-bit int can store values exceeding +/- 2 billion. This cannam@0: 00066 // means we can safely use our lower int for nanoseconds, as there are cannam@0: 00067 // 1 billion nanoseconds in a second and we need to handle double that cannam@0: 00068 // because of the implementations of addition etc that we use. cannam@0: 00069 // cannam@0: 00070 // The maximum valid RealTime on a 32-bit system is somewhere around cannam@0: 00071 // 68 years: 999999999 nanoseconds longer than the classic Unix epoch. cannam@0: 00072 cannam@0: 00073 #define ONE_BILLION 1000000000 cannam@0: 00074 cannam@0: 00075 RealTime::RealTime(int s, int n) : cannam@0: 00076 sec(s), nsec(n) cannam@0: 00077 { cannam@0: 00078 if (sec == 0) { cannam@0: 00079 while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; } cannam@0: 00080 while (nsec >= ONE_BILLION) { nsec -= ONE_BILLION; ++sec; } cannam@0: 00081 } else if (sec < 0) { cannam@0: 00082 while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; } cannam@0: 00083 while (nsec > 0) { nsec -= ONE_BILLION; ++sec; } cannam@0: 00084 } else { cannam@0: 00085 while (nsec >= ONE_BILLION) { nsec -= ONE_BILLION; ++sec; } cannam@0: 00086 while (nsec < 0) { nsec += ONE_BILLION; --sec; } cannam@0: 00087 } cannam@0: 00088 } cannam@0: 00089 cannam@0: 00090 RealTime cannam@0: 00091 RealTime::fromSeconds(double sec) cannam@0: 00092 { cannam@0: 00093 return RealTime(int(sec), int((sec - int(sec)) * ONE_BILLION + 0.5)); cannam@0: 00094 } cannam@0: 00095 cannam@0: 00096 RealTime cannam@0: 00097 RealTime::fromMilliseconds(int msec) cannam@0: 00098 { cannam@0: 00099 return RealTime(msec / 1000, (msec % 1000) * 1000000); cannam@0: 00100 } cannam@0: 00101 cannam@0: 00102 #ifndef _WIN32 cannam@0: 00103 RealTime cannam@0: 00104 RealTime::fromTimeval(const struct timeval &tv) cannam@0: 00105 { cannam@0: 00106 return RealTime(tv.tv_sec, tv.tv_usec * 1000); cannam@0: 00107 } cannam@0: 00108 #endif cannam@0: 00109 cannam@0: 00110 std::ostream &operator<<(std::ostream &out, const RealTime &rt) cannam@0: 00111 { cannam@0: 00112 if (rt < RealTime::zeroTime) { cannam@0: 00113 out << "-"; cannam@0: 00114 } else { cannam@0: 00115 out << " "; cannam@0: 00116 } cannam@0: 00117 cannam@0: 00118 int s = (rt.sec < 0 ? -rt.sec : rt.sec); cannam@0: 00119 int n = (rt.nsec < 0 ? -rt.nsec : rt.nsec); cannam@0: 00120 cannam@0: 00121 out << s << "."; cannam@0: 00122 cannam@0: 00123 int nn(n); cannam@0: 00124 if (nn == 0) out << "00000000"; cannam@0: 00125 else while (nn < (ONE_BILLION / 10)) { cannam@0: 00126 out << "0"; cannam@0: 00127 nn *= 10; cannam@0: 00128 } cannam@0: 00129 cannam@0: 00130 out << n << "R"; cannam@0: 00131 return out; cannam@0: 00132 } cannam@0: 00133 cannam@0: 00134 std::string cannam@0: 00135 RealTime::toString() const cannam@0: 00136 { cannam@0: 00137 std::stringstream out; cannam@0: 00138 out << *this; cannam@0: 00139 cannam@0: 00140 #if (__GNUC__ < 3) cannam@0: 00141 out << std::ends; cannam@0: 00142 #endif cannam@0: 00143 cannam@0: 00144 std::string s = out.str(); cannam@0: 00145 cannam@0: 00146 // remove trailing R cannam@0: 00147 return s.substr(0, s.length() - 1); cannam@0: 00148 } cannam@0: 00149 cannam@0: 00150 std::string cannam@0: 00151 RealTime::toText(bool fixedDp) const cannam@0: 00152 { cannam@0: 00153 if (*this < RealTime::zeroTime) return "-" + (-*this).toText(); cannam@0: 00154 cannam@0: 00155 std::stringstream out; cannam@0: 00156 cannam@0: 00157 if (sec >= 3600) { cannam@0: 00158 out << (sec / 3600) << ":"; cannam@0: 00159 } cannam@0: 00160 cannam@0: 00161 if (sec >= 60) { cannam@0: 00162 out << (sec % 3600) / 60 << ":"; cannam@0: 00163 } cannam@0: 00164 cannam@0: 00165 if (sec >= 10) { cannam@0: 00166 out << ((sec % 60) / 10); cannam@0: 00167 } cannam@0: 00168 cannam@0: 00169 out << (sec % 10); cannam@0: 00170 cannam@0: 00171 int ms = msec(); cannam@0: 00172 cannam@0: 00173 if (ms != 0) { cannam@0: 00174 out << "."; cannam@0: 00175 out << (ms / 100); cannam@0: 00176 ms = ms % 100; cannam@0: 00177 if (ms != 0) { cannam@0: 00178 out << (ms / 10); cannam@0: 00179 ms = ms % 10; cannam@0: 00180 } else if (fixedDp) { cannam@0: 00181 out << "0"; cannam@0: 00182 } cannam@0: 00183 if (ms != 0) { cannam@0: 00184 out << ms; cannam@0: 00185 } else if (fixedDp) { cannam@0: 00186 out << "0"; cannam@0: 00187 } cannam@0: 00188 } else if (fixedDp) { cannam@0: 00189 out << ".000"; cannam@0: 00190 } cannam@0: 00191 cannam@0: 00192 #if (__GNUC__ < 3) cannam@0: 00193 out << std::ends; cannam@0: 00194 #endif cannam@0: 00195 cannam@0: 00196 std::string s = out.str(); cannam@0: 00197 cannam@0: 00198 return s; cannam@0: 00199 } cannam@0: 00200 cannam@0: 00201 cannam@0: 00202 RealTime cannam@0: 00203 RealTime::operator/(int d) const cannam@0: 00204 { cannam@0: 00205 int secdiv = sec / d; cannam@0: 00206 int secrem = sec % d; cannam@0: 00207 cannam@0: 00208 double nsecdiv = (double(nsec) + ONE_BILLION * double(secrem)) / d; cannam@0: 00209 cannam@0: 00210 return RealTime(secdiv, int(nsecdiv + 0.5)); cannam@0: 00211 } cannam@0: 00212 cannam@0: 00213 double cannam@0: 00214 RealTime::operator/(const RealTime &r) const cannam@0: 00215 { cannam@0: 00216 double lTotal = double(sec) * ONE_BILLION + double(nsec); cannam@0: 00217 double rTotal = double(r.sec) * ONE_BILLION + double(r.nsec); cannam@0: 00218 cannam@0: 00219 if (rTotal == 0) return 0.0; cannam@0: 00220 else return lTotal/rTotal; cannam@0: 00221 } cannam@0: 00222 cannam@0: 00223 long cannam@0: 00224 RealTime::realTime2Frame(const RealTime &time, unsigned int sampleRate) cannam@0: 00225 { cannam@0: 00226 if (time < zeroTime) return -realTime2Frame(-time, sampleRate); cannam@0: 00227 double s = time.sec + double(time.nsec + 1) / 1000000000.0; cannam@0: 00228 return long(s * sampleRate); cannam@0: 00229 } cannam@0: 00230 cannam@0: 00231 RealTime cannam@0: 00232 RealTime::frame2RealTime(long frame, unsigned int sampleRate) cannam@0: 00233 { cannam@0: 00234 if (frame < 0) return -frame2RealTime(-frame, sampleRate); cannam@0: 00235 cannam@0: 00236 RealTime rt; cannam@0: 00237 rt.sec = frame / long(sampleRate); cannam@0: 00238 frame -= rt.sec * long(sampleRate); cannam@0: 00239 rt.nsec = (int)(((double(frame) * 1000000.0) / sampleRate) * 1000.0); cannam@0: 00240 return rt; cannam@0: 00241 } cannam@0: 00242 cannam@0: 00243 const RealTime RealTime::zeroTime(0,0); cannam@0: 00244 cannam@0: 00245 } cannam@0: