annotate vamp-sdk/RealTime.cpp @ 202:e100112ecc06

* Remove debug * Block size definitely too short
author cannam
date Sat, 11 Oct 2008 08:10:21 +0000
parents dbab8c3a6571
children
rev   line source
cannam@3 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
cannam@3 2
cannam@3 3 /*
cannam@3 4 Vamp
cannam@3 5
cannam@3 6 An API for audio analysis and feature extraction plugins.
cannam@3 7
cannam@3 8 Centre for Digital Music, Queen Mary, University of London.
cannam@3 9 Copyright 2006 Chris Cannam.
cannam@3 10
cannam@3 11 Permission is hereby granted, free of charge, to any person
cannam@3 12 obtaining a copy of this software and associated documentation
cannam@3 13 files (the "Software"), to deal in the Software without
cannam@3 14 restriction, including without limitation the rights to use, copy,
cannam@3 15 modify, merge, publish, distribute, sublicense, and/or sell copies
cannam@3 16 of the Software, and to permit persons to whom the Software is
cannam@3 17 furnished to do so, subject to the following conditions:
cannam@3 18
cannam@3 19 The above copyright notice and this permission notice shall be
cannam@3 20 included in all copies or substantial portions of the Software.
cannam@3 21
cannam@3 22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
cannam@3 23 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
cannam@3 24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
cannam@6 25 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
cannam@3 26 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
cannam@3 27 CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
cannam@3 28 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
cannam@3 29
cannam@3 30 Except as contained in this notice, the names of the Centre for
cannam@3 31 Digital Music; Queen Mary, University of London; and Chris Cannam
cannam@3 32 shall not be used in advertising or otherwise to promote the sale,
cannam@3 33 use or other dealings in this Software without prior written
cannam@3 34 authorization.
cannam@3 35 */
cannam@3 36
cannam@3 37 /*
cannam@3 38 This is a modified version of a source file from the
cannam@3 39 Rosegarden MIDI and audio sequencer and notation editor.
cannam@10 40 This file copyright 2000-2006 Chris Cannam.
cannam@10 41 Relicensed by the author as detailed above.
cannam@3 42 */
cannam@3 43
cannam@3 44 #include <iostream>
cannam@3 45
cannam@3 46 #if (__GNUC__ < 3)
cannam@3 47 #include <strstream>
cannam@3 48 #define stringstream strstream
cannam@3 49 #else
cannam@3 50 #include <sstream>
cannam@3 51 #endif
cannam@3 52
cannam@3 53 using std::cerr;
cannam@3 54 using std::endl;
cannam@3 55
cannam@3 56 #include "RealTime.h"
cannam@80 57
cannam@80 58 #ifndef _WIN32
cannam@82 59 #include <sys/time.h>
cannam@80 60 #endif
cannam@3 61
cannam@3 62 namespace Vamp {
cannam@3 63
cannam@3 64 // A RealTime consists of two ints that must be at least 32 bits each.
cannam@3 65 // A signed 32-bit int can store values exceeding +/- 2 billion. This
cannam@3 66 // means we can safely use our lower int for nanoseconds, as there are
cannam@3 67 // 1 billion nanoseconds in a second and we need to handle double that
cannam@3 68 // because of the implementations of addition etc that we use.
cannam@3 69 //
cannam@3 70 // The maximum valid RealTime on a 32-bit system is somewhere around
cannam@3 71 // 68 years: 999999999 nanoseconds longer than the classic Unix epoch.
cannam@3 72
cannam@3 73 #define ONE_BILLION 1000000000
cannam@3 74
cannam@3 75 RealTime::RealTime(int s, int n) :
cannam@3 76 sec(s), nsec(n)
cannam@3 77 {
cannam@3 78 if (sec == 0) {
cannam@3 79 while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
cannam@3 80 while (nsec >= ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
cannam@3 81 } else if (sec < 0) {
cannam@3 82 while (nsec <= -ONE_BILLION) { nsec += ONE_BILLION; --sec; }
cannam@3 83 while (nsec > 0) { nsec -= ONE_BILLION; ++sec; }
cannam@3 84 } else {
cannam@3 85 while (nsec >= ONE_BILLION) { nsec -= ONE_BILLION; ++sec; }
cannam@3 86 while (nsec < 0) { nsec += ONE_BILLION; --sec; }
cannam@3 87 }
cannam@3 88 }
cannam@3 89
cannam@3 90 RealTime
cannam@3 91 RealTime::fromSeconds(double sec)
cannam@3 92 {
cannam@30 93 return RealTime(int(sec), int((sec - int(sec)) * ONE_BILLION + 0.5));
cannam@3 94 }
cannam@3 95
cannam@3 96 RealTime
cannam@3 97 RealTime::fromMilliseconds(int msec)
cannam@3 98 {
cannam@3 99 return RealTime(msec / 1000, (msec % 1000) * 1000000);
cannam@3 100 }
cannam@3 101
cannam@80 102 #ifndef _WIN32
cannam@3 103 RealTime
cannam@3 104 RealTime::fromTimeval(const struct timeval &tv)
cannam@3 105 {
cannam@3 106 return RealTime(tv.tv_sec, tv.tv_usec * 1000);
cannam@3 107 }
cannam@80 108 #endif
cannam@3 109
cannam@3 110 std::ostream &operator<<(std::ostream &out, const RealTime &rt)
cannam@3 111 {
cannam@3 112 if (rt < RealTime::zeroTime) {
cannam@3 113 out << "-";
cannam@3 114 } else {
cannam@3 115 out << " ";
cannam@3 116 }
cannam@3 117
cannam@3 118 int s = (rt.sec < 0 ? -rt.sec : rt.sec);
cannam@3 119 int n = (rt.nsec < 0 ? -rt.nsec : rt.nsec);
cannam@3 120
cannam@3 121 out << s << ".";
cannam@3 122
cannam@3 123 int nn(n);
cannam@3 124 if (nn == 0) out << "00000000";
cannam@3 125 else while (nn < (ONE_BILLION / 10)) {
cannam@3 126 out << "0";
cannam@3 127 nn *= 10;
cannam@3 128 }
cannam@3 129
cannam@3 130 out << n << "R";
cannam@3 131 return out;
cannam@3 132 }
cannam@3 133
cannam@3 134 std::string
cannam@3 135 RealTime::toString() const
cannam@3 136 {
cannam@3 137 std::stringstream out;
cannam@3 138 out << *this;
cannam@3 139
cannam@3 140 #if (__GNUC__ < 3)
cannam@3 141 out << std::ends;
cannam@3 142 #endif
cannam@3 143
cannam@3 144 std::string s = out.str();
cannam@3 145
cannam@3 146 // remove trailing R
cannam@3 147 return s.substr(0, s.length() - 1);
cannam@3 148 }
cannam@3 149
cannam@3 150 std::string
cannam@3 151 RealTime::toText(bool fixedDp) const
cannam@3 152 {
cannam@3 153 if (*this < RealTime::zeroTime) return "-" + (-*this).toText();
cannam@3 154
cannam@3 155 std::stringstream out;
cannam@3 156
cannam@3 157 if (sec >= 3600) {
cannam@3 158 out << (sec / 3600) << ":";
cannam@3 159 }
cannam@3 160
cannam@3 161 if (sec >= 60) {
cannam@3 162 out << (sec % 3600) / 60 << ":";
cannam@3 163 }
cannam@3 164
cannam@3 165 if (sec >= 10) {
cannam@3 166 out << ((sec % 60) / 10);
cannam@3 167 }
cannam@3 168
cannam@3 169 out << (sec % 10);
cannam@3 170
cannam@3 171 int ms = msec();
cannam@3 172
cannam@3 173 if (ms != 0) {
cannam@3 174 out << ".";
cannam@3 175 out << (ms / 100);
cannam@3 176 ms = ms % 100;
cannam@3 177 if (ms != 0) {
cannam@3 178 out << (ms / 10);
cannam@3 179 ms = ms % 10;
cannam@3 180 } else if (fixedDp) {
cannam@3 181 out << "0";
cannam@3 182 }
cannam@3 183 if (ms != 0) {
cannam@3 184 out << ms;
cannam@3 185 } else if (fixedDp) {
cannam@3 186 out << "0";
cannam@3 187 }
cannam@3 188 } else if (fixedDp) {
cannam@3 189 out << ".000";
cannam@3 190 }
cannam@3 191
cannam@3 192 #if (__GNUC__ < 3)
cannam@3 193 out << std::ends;
cannam@3 194 #endif
cannam@3 195
cannam@3 196 std::string s = out.str();
cannam@3 197
cannam@3 198 return s;
cannam@3 199 }
cannam@3 200
cannam@3 201
cannam@3 202 RealTime
cannam@3 203 RealTime::operator/(int d) const
cannam@3 204 {
cannam@3 205 int secdiv = sec / d;
cannam@3 206 int secrem = sec % d;
cannam@3 207
cannam@3 208 double nsecdiv = (double(nsec) + ONE_BILLION * double(secrem)) / d;
cannam@3 209
cannam@3 210 return RealTime(secdiv, int(nsecdiv + 0.5));
cannam@3 211 }
cannam@3 212
cannam@3 213 double
cannam@3 214 RealTime::operator/(const RealTime &r) const
cannam@3 215 {
cannam@3 216 double lTotal = double(sec) * ONE_BILLION + double(nsec);
cannam@3 217 double rTotal = double(r.sec) * ONE_BILLION + double(r.nsec);
cannam@3 218
cannam@3 219 if (rTotal == 0) return 0.0;
cannam@3 220 else return lTotal/rTotal;
cannam@3 221 }
cannam@3 222
cannam@3 223 long
cannam@3 224 RealTime::realTime2Frame(const RealTime &time, unsigned int sampleRate)
cannam@3 225 {
cannam@3 226 if (time < zeroTime) return -realTime2Frame(-time, sampleRate);
cannam@137 227 double s = time.sec + double(time.nsec + 1) / 1000000000.0;
cannam@137 228 return long(s * sampleRate);
cannam@3 229 }
cannam@3 230
cannam@3 231 RealTime
cannam@3 232 RealTime::frame2RealTime(long frame, unsigned int sampleRate)
cannam@3 233 {
cannam@3 234 if (frame < 0) return -frame2RealTime(-frame, sampleRate);
cannam@3 235
cannam@3 236 RealTime rt;
cannam@3 237 rt.sec = frame / long(sampleRate);
cannam@3 238 frame -= rt.sec * long(sampleRate);
cannam@137 239 rt.nsec = (int)(((double(frame) * 1000000.0) / sampleRate) * 1000.0);
cannam@3 240 return rt;
cannam@3 241 }
cannam@3 242
cannam@3 243 const RealTime RealTime::zeroTime(0,0);
cannam@3 244
cannam@3 245 }