annotate data/model/WaveFileModel.cpp @ 1091:bdebff3265ae simple-fft-model

Simplest naive FFTModel implementation (+ fill in tests)
author Chris Cannam
date Fri, 12 Jun 2015 18:08:57 +0100
parents 9f4505ac9072
children 4d9816ba0ebe b9faee02afa5
rev   line source
Chris@147 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@147 2
Chris@147 3 /*
Chris@147 4 Sonic Visualiser
Chris@147 5 An audio file viewer and annotation editor.
Chris@147 6 Centre for Digital Music, Queen Mary, University of London.
Chris@202 7 This file copyright 2006 Chris Cannam and QMUL.
Chris@147 8
Chris@147 9 This program is free software; you can redistribute it and/or
Chris@147 10 modify it under the terms of the GNU General Public License as
Chris@147 11 published by the Free Software Foundation; either version 2 of the
Chris@147 12 License, or (at your option) any later version. See the file
Chris@147 13 COPYING included with this distribution for more information.
Chris@147 14 */
Chris@147 15
Chris@150 16 #include "WaveFileModel.h"
Chris@147 17
Chris@147 18 #include "fileio/AudioFileReader.h"
Chris@147 19 #include "fileio/AudioFileReaderFactory.h"
Chris@147 20
Chris@150 21 #include "system/System.h"
Chris@147 22
Chris@921 23 #include "base/Preferences.h"
Chris@921 24
Chris@147 25 #include <QFileInfo>
Chris@314 26 #include <QTextStream>
Chris@147 27
Chris@147 28 #include <iostream>
Chris@147 29 #include <unistd.h>
Chris@572 30 #include <cmath>
Chris@147 31 #include <sndfile.h>
Chris@147 32
Chris@147 33 #include <cassert>
Chris@147 34
Chris@236 35 //#define DEBUG_WAVE_FILE_MODEL 1
Chris@236 36
Chris@179 37 PowerOfSqrtTwoZoomConstraint
Chris@179 38 WaveFileModel::m_zoomConstraint;
Chris@179 39
Chris@1040 40 WaveFileModel::WaveFileModel(FileSource source, sv_samplerate_t targetRate) :
Chris@316 41 m_source(source),
Chris@316 42 m_path(source.getLocation()),
Chris@971 43 m_reader(0),
Chris@175 44 m_myReader(true),
Chris@300 45 m_startFrame(0),
Chris@147 46 m_fillThread(0),
Chris@147 47 m_updateTimer(0),
Chris@147 48 m_lastFillExtent(0),
Chris@752 49 m_exiting(false),
Chris@752 50 m_lastDirectReadStart(0),
Chris@752 51 m_lastDirectReadCount(0)
Chris@147 52 {
Chris@316 53 m_source.waitForData();
Chris@316 54 if (m_source.isOK()) {
Chris@921 55 bool normalise = Preferences::getInstance()->getNormaliseAudio();
Chris@327 56 m_reader = AudioFileReaderFactory::createThreadingReader
Chris@921 57 (m_source, targetRate, normalise);
Chris@316 58 if (m_reader) {
Chris@690 59 SVDEBUG << "WaveFileModel::WaveFileModel: reader rate: "
Chris@687 60 << m_reader->getSampleRate() << endl;
Chris@316 61 }
Chris@316 62 }
Chris@292 63 if (m_reader) setObjectName(m_reader->getTitle());
Chris@316 64 if (objectName() == "") setObjectName(QFileInfo(m_path).fileName());
Chris@175 65 if (isOK()) fillCache();
Chris@175 66 }
Chris@175 67
Chris@317 68 WaveFileModel::WaveFileModel(FileSource source, AudioFileReader *reader) :
Chris@316 69 m_source(source),
Chris@316 70 m_path(source.getLocation()),
Chris@971 71 m_reader(0),
Chris@175 72 m_myReader(false),
Chris@300 73 m_startFrame(0),
Chris@175 74 m_fillThread(0),
Chris@175 75 m_updateTimer(0),
Chris@175 76 m_lastFillExtent(0),
Chris@175 77 m_exiting(false)
Chris@175 78 {
Chris@175 79 m_reader = reader;
Chris@292 80 if (m_reader) setObjectName(m_reader->getTitle());
Chris@316 81 if (objectName() == "") setObjectName(QFileInfo(m_path).fileName());
Chris@187 82 fillCache();
Chris@147 83 }
Chris@147 84
Chris@147 85 WaveFileModel::~WaveFileModel()
Chris@147 86 {
Chris@147 87 m_exiting = true;
Chris@147 88 if (m_fillThread) m_fillThread->wait();
Chris@175 89 if (m_myReader) delete m_reader;
Chris@147 90 m_reader = 0;
Chris@147 91 }
Chris@147 92
Chris@147 93 bool
Chris@147 94 WaveFileModel::isOK() const
Chris@147 95 {
Chris@147 96 return m_reader && m_reader->isOK();
Chris@147 97 }
Chris@147 98
Chris@147 99 bool
Chris@147 100 WaveFileModel::isReady(int *completion) const
Chris@147 101 {
Chris@147 102 bool ready = (isOK() && (m_fillThread == 0));
Chris@147 103 double c = double(m_lastFillExtent) / double(getEndFrame() - getStartFrame());
Chris@266 104 static int prevCompletion = 0;
Chris@265 105 if (completion) {
Chris@265 106 *completion = int(c * 100.0 + 0.01);
Chris@265 107 if (m_reader) {
Chris@265 108 int decodeCompletion = m_reader->getDecodeCompletion();
Chris@266 109 if (decodeCompletion < 90) *completion = decodeCompletion;
Chris@266 110 else *completion = std::min(*completion, decodeCompletion);
Chris@265 111 }
Chris@266 112 if (*completion != 0 &&
Chris@266 113 *completion != 100 &&
Chris@266 114 prevCompletion != 0 &&
Chris@266 115 prevCompletion > *completion) {
Chris@266 116 // just to avoid completion going backwards
Chris@266 117 *completion = prevCompletion;
Chris@266 118 }
Chris@266 119 prevCompletion = *completion;
Chris@265 120 }
Chris@236 121 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@690 122 SVDEBUG << "WaveFileModel::isReady(): ready = " << ready << ", completion = " << (completion ? *completion : -1) << endl;
Chris@236 123 #endif
Chris@147 124 return ready;
Chris@147 125 }
Chris@147 126
Chris@1038 127 sv_frame_t
Chris@147 128 WaveFileModel::getFrameCount() const
Chris@147 129 {
Chris@147 130 if (!m_reader) return 0;
Chris@147 131 return m_reader->getFrameCount();
Chris@147 132 }
Chris@147 133
Chris@929 134 int
Chris@147 135 WaveFileModel::getChannelCount() const
Chris@147 136 {
Chris@147 137 if (!m_reader) return 0;
Chris@147 138 return m_reader->getChannelCount();
Chris@147 139 }
Chris@147 140
Chris@1040 141 sv_samplerate_t
Chris@147 142 WaveFileModel::getSampleRate() const
Chris@147 143 {
Chris@147 144 if (!m_reader) return 0;
Chris@147 145 return m_reader->getSampleRate();
Chris@147 146 }
Chris@147 147
Chris@1040 148 sv_samplerate_t
Chris@297 149 WaveFileModel::getNativeRate() const
Chris@297 150 {
Chris@297 151 if (!m_reader) return 0;
Chris@1040 152 sv_samplerate_t rate = m_reader->getNativeRate();
Chris@297 153 if (rate == 0) rate = getSampleRate();
Chris@297 154 return rate;
Chris@297 155 }
Chris@297 156
Chris@333 157 QString
Chris@333 158 WaveFileModel::getTitle() const
Chris@333 159 {
Chris@333 160 QString title;
Chris@333 161 if (m_reader) title = m_reader->getTitle();
Chris@333 162 if (title == "") title = objectName();
Chris@333 163 return title;
Chris@333 164 }
Chris@333 165
Chris@333 166 QString
Chris@333 167 WaveFileModel::getMaker() const
Chris@333 168 {
Chris@333 169 if (m_reader) return m_reader->getMaker();
Chris@333 170 return "";
Chris@333 171 }
Chris@345 172
Chris@345 173 QString
Chris@345 174 WaveFileModel::getLocation() const
Chris@345 175 {
Chris@345 176 if (m_reader) return m_reader->getLocation();
Chris@345 177 return "";
Chris@345 178 }
Chris@1010 179
Chris@1010 180 QString
Chris@1010 181 WaveFileModel::getLocalFilename() const
Chris@1010 182 {
Chris@1010 183 if (m_reader) return m_reader->getLocalFilename();
Chris@1010 184 return "";
Chris@1010 185 }
Chris@333 186
Chris@1038 187 sv_frame_t
Chris@1038 188 WaveFileModel::getData(int channel, sv_frame_t start, sv_frame_t count,
Chris@300 189 float *buffer) const
Chris@147 190 {
Chris@147 191 // Always read these directly from the file.
Chris@147 192 // This is used for e.g. audio playback.
Chris@147 193 // Could be much more efficient (although compiler optimisation will help)
Chris@147 194
Chris@429 195 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@843 196 cout << "WaveFileModel::getData[" << this << "]: " << channel << ", " << start << ", " << count << ", " << buffer << endl;
Chris@429 197 #endif
Chris@429 198
Chris@363 199 if (start >= m_startFrame) {
Chris@300 200 start -= m_startFrame;
Chris@300 201 } else {
Chris@1038 202 for (sv_frame_t i = 0; i < count; ++i) {
Chris@948 203 buffer[i] = 0.f;
Chris@948 204 }
Chris@300 205 if (count <= m_startFrame - start) {
Chris@300 206 return 0;
Chris@300 207 } else {
Chris@300 208 count -= (m_startFrame - start);
Chris@300 209 start = 0;
Chris@300 210 }
Chris@147 211 }
Chris@147 212
Chris@300 213 if (!m_reader || !m_reader->isOK() || count == 0) {
Chris@1038 214 for (sv_frame_t i = 0; i < count; ++i) buffer[i] = 0.f;
Chris@300 215 return 0;
Chris@300 216 }
Chris@147 217
Chris@236 218 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@690 219 // SVDEBUG << "WaveFileModel::getValues(" << channel << ", "
Chris@687 220 // << start << ", " << end << "): calling reader" << endl;
Chris@236 221 #endif
Chris@175 222
Chris@363 223 int channels = getChannelCount();
Chris@363 224
Chris@1041 225 SampleBlock frames = m_reader->getInterleavedFrames(start, count);
Chris@147 226
Chris@1038 227 sv_frame_t i = 0;
Chris@147 228
Chris@363 229 int ch0 = channel, ch1 = channel;
Chris@147 230 if (channel == -1) {
Chris@147 231 ch0 = 0;
Chris@147 232 ch1 = channels - 1;
Chris@147 233 }
Chris@147 234
Chris@300 235 while (i < count) {
Chris@147 236
Chris@147 237 buffer[i] = 0.0;
Chris@147 238
Chris@147 239 for (int ch = ch0; ch <= ch1; ++ch) {
Chris@147 240
Chris@1038 241 sv_frame_t index = i * channels + ch;
Chris@1038 242 if (index >= (sv_frame_t)frames.size()) break;
Chris@147 243
Chris@147 244 float sample = frames[index];
Chris@147 245 buffer[i] += sample;
Chris@147 246 }
Chris@147 247
Chris@147 248 ++i;
Chris@147 249 }
Chris@147 250
Chris@147 251 return i;
Chris@147 252 }
Chris@147 253
Chris@1038 254 sv_frame_t
Chris@1086 255 WaveFileModel::getMultiChannelData(int fromchannel, int tochannel,
Chris@1086 256 sv_frame_t start, sv_frame_t count,
Chris@1086 257 float **buffer) const
Chris@363 258 {
Chris@429 259 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@843 260 cout << "WaveFileModel::getData[" << this << "]: " << fromchannel << "," << tochannel << ", " << start << ", " << count << ", " << buffer << endl;
Chris@429 261 #endif
Chris@429 262
Chris@929 263 int channels = getChannelCount();
Chris@363 264
Chris@363 265 if (fromchannel > tochannel) {
Chris@843 266 cerr << "ERROR: WaveFileModel::getData: fromchannel ("
Chris@363 267 << fromchannel << ") > tochannel (" << tochannel << ")"
Chris@843 268 << endl;
Chris@363 269 return 0;
Chris@363 270 }
Chris@363 271
Chris@363 272 if (tochannel >= channels) {
Chris@843 273 cerr << "ERROR: WaveFileModel::getData: tochannel ("
Chris@363 274 << tochannel << ") >= channel count (" << channels << ")"
Chris@843 275 << endl;
Chris@363 276 return 0;
Chris@363 277 }
Chris@363 278
Chris@363 279 if (fromchannel == tochannel) {
Chris@363 280 return getData(fromchannel, start, count, buffer[0]);
Chris@363 281 }
Chris@363 282
Chris@929 283 int reqchannels = (tochannel - fromchannel) + 1;
Chris@363 284
Chris@363 285 // Always read these directly from the file.
Chris@363 286 // This is used for e.g. audio playback.
Chris@363 287 // Could be much more efficient (although compiler optimisation will help)
Chris@363 288
Chris@363 289 if (start >= m_startFrame) {
Chris@363 290 start -= m_startFrame;
Chris@363 291 } else {
Chris@929 292 for (int c = 0; c < reqchannels; ++c) {
Chris@1038 293 for (sv_frame_t i = 0; i < count; ++i) buffer[c][i] = 0.f;
Chris@363 294 }
Chris@363 295 if (count <= m_startFrame - start) {
Chris@363 296 return 0;
Chris@363 297 } else {
Chris@363 298 count -= (m_startFrame - start);
Chris@363 299 start = 0;
Chris@363 300 }
Chris@363 301 }
Chris@363 302
Chris@363 303 if (!m_reader || !m_reader->isOK() || count == 0) {
Chris@929 304 for (int c = 0; c < reqchannels; ++c) {
Chris@1038 305 for (sv_frame_t i = 0; i < count; ++i) buffer[c][i] = 0.f;
Chris@363 306 }
Chris@363 307 return 0;
Chris@363 308 }
Chris@363 309
Chris@1041 310 SampleBlock frames = m_reader->getInterleavedFrames(start, count);
Chris@363 311
Chris@1038 312 sv_frame_t i = 0;
Chris@363 313
Chris@1038 314 sv_frame_t index = 0, available = frames.size();
Chris@363 315
Chris@363 316 while (i < count) {
Chris@363 317
Chris@363 318 if (index >= available) break;
Chris@363 319
Chris@929 320 int destc = 0;
Chris@363 321
Chris@929 322 for (int c = 0; c < channels; ++c) {
Chris@363 323
Chris@363 324 if (c >= fromchannel && c <= tochannel) {
Chris@363 325 buffer[destc][i] = frames[index];
Chris@363 326 ++destc;
Chris@363 327 }
Chris@363 328
Chris@363 329 ++index;
Chris@363 330 }
Chris@363 331
Chris@363 332 ++i;
Chris@363 333 }
Chris@363 334
Chris@363 335 return i;
Chris@363 336 }
Chris@363 337
Chris@929 338 int
Chris@929 339 WaveFileModel::getSummaryBlockSize(int desired) const
Chris@377 340 {
Chris@377 341 int cacheType = 0;
Chris@377 342 int power = m_zoomConstraint.getMinCachePower();
Chris@929 343 int roundedBlockSize = m_zoomConstraint.getNearestBlockSize
Chris@377 344 (desired, cacheType, power, ZoomConstraint::RoundDown);
Chris@377 345 if (cacheType != 0 && cacheType != 1) {
Chris@377 346 // We will be reading directly from file, so can satisfy any
Chris@377 347 // blocksize requirement
Chris@377 348 return desired;
Chris@377 349 } else {
Chris@377 350 return roundedBlockSize;
Chris@377 351 }
Chris@377 352 }
Chris@377 353
Chris@225 354 void
Chris@1038 355 WaveFileModel::getSummaries(int channel, sv_frame_t start, sv_frame_t count,
Chris@929 356 RangeBlock &ranges, int &blockSize) const
Chris@147 357 {
Chris@225 358 ranges.clear();
Chris@225 359 if (!isOK()) return;
Chris@377 360 ranges.reserve((count / blockSize) + 1);
Chris@147 361
Chris@300 362 if (start > m_startFrame) start -= m_startFrame;
Chris@300 363 else if (count <= m_startFrame - start) return;
Chris@300 364 else {
Chris@300 365 count -= (m_startFrame - start);
Chris@300 366 start = 0;
Chris@147 367 }
Chris@147 368
Chris@147 369 int cacheType = 0;
Chris@179 370 int power = m_zoomConstraint.getMinCachePower();
Chris@929 371 int roundedBlockSize = m_zoomConstraint.getNearestBlockSize
Chris@377 372 (blockSize, cacheType, power, ZoomConstraint::RoundDown);
Chris@147 373
Chris@929 374 int channels = getChannelCount();
Chris@147 375
Chris@147 376 if (cacheType != 0 && cacheType != 1) {
Chris@147 377
Chris@147 378 // We need to read directly from the file. We haven't got
Chris@147 379 // this cached. Hope the requested area is small. This is
Chris@147 380 // not optimal -- we'll end up reading the same frames twice
Chris@147 381 // for stereo files, in two separate calls to this method.
Chris@147 382 // We could fairly trivially handle this for most cases that
Chris@147 383 // matter by putting a single cache in getInterleavedFrames
Chris@147 384 // for short queries.
Chris@147 385
Chris@377 386 m_directReadMutex.lock();
Chris@377 387
Chris@377 388 if (m_lastDirectReadStart != start ||
Chris@377 389 m_lastDirectReadCount != count ||
Chris@377 390 m_directRead.empty()) {
Chris@377 391
Chris@1041 392 m_directRead = m_reader->getInterleavedFrames(start, count);
Chris@377 393 m_lastDirectReadStart = start;
Chris@377 394 m_lastDirectReadCount = count;
Chris@377 395 }
Chris@377 396
Chris@147 397 float max = 0.0, min = 0.0, total = 0.0;
Chris@1038 398 sv_frame_t i = 0, got = 0;
Chris@147 399
Chris@300 400 while (i < count) {
Chris@147 401
Chris@1038 402 sv_frame_t index = i * channels + channel;
Chris@1038 403 if (index >= (sv_frame_t)m_directRead.size()) break;
Chris@147 404
Chris@377 405 float sample = m_directRead[index];
Chris@300 406 if (sample > max || got == 0) max = sample;
Chris@300 407 if (sample < min || got == 0) min = sample;
Chris@147 408 total += fabsf(sample);
Chris@838 409
Chris@147 410 ++i;
Chris@300 411 ++got;
Chris@147 412
Chris@300 413 if (got == blockSize) {
Chris@1038 414 ranges.push_back(Range(min, max, total / float(got)));
Chris@147 415 min = max = total = 0.0f;
Chris@300 416 got = 0;
Chris@147 417 }
Chris@147 418 }
Chris@147 419
Chris@377 420 m_directReadMutex.unlock();
Chris@377 421
Chris@300 422 if (got > 0) {
Chris@1038 423 ranges.push_back(Range(min, max, total / float(got)));
Chris@147 424 }
Chris@147 425
Chris@225 426 return;
Chris@147 427
Chris@147 428 } else {
Chris@147 429
Chris@147 430 QMutexLocker locker(&m_mutex);
Chris@147 431
Chris@147 432 const RangeBlock &cache = m_cache[cacheType];
Chris@147 433
Chris@377 434 blockSize = roundedBlockSize;
Chris@377 435
Chris@1038 436 sv_frame_t cacheBlock, div;
Chris@147 437
Chris@147 438 if (cacheType == 0) {
Chris@179 439 cacheBlock = (1 << m_zoomConstraint.getMinCachePower());
Chris@147 440 div = (1 << power) / cacheBlock;
Chris@147 441 } else {
Chris@1038 442 cacheBlock = sv_frame_t((1 << m_zoomConstraint.getMinCachePower()) * sqrt(2.) + 0.01);
Chris@1038 443 div = sv_frame_t(((1 << power) * sqrt(2.) + 0.01) / double(cacheBlock));
Chris@147 444 }
Chris@147 445
Chris@1038 446 sv_frame_t startIndex = start / cacheBlock;
Chris@1038 447 sv_frame_t endIndex = (start + count) / cacheBlock;
Chris@147 448
Chris@147 449 float max = 0.0, min = 0.0, total = 0.0;
Chris@1038 450 sv_frame_t i = 0, got = 0;
Chris@147 451
Chris@236 452 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@300 453 cerr << "blockSize is " << blockSize << ", cacheBlock " << cacheBlock << ", start " << start << ", count " << count << " (frame count " << getFrameCount() << "), power is " << power << ", div is " << div << ", startIndex " << startIndex << ", endIndex " << endIndex << endl;
Chris@236 454 #endif
Chris@147 455
Chris@300 456 for (i = 0; i <= endIndex - startIndex; ) {
Chris@147 457
Chris@1038 458 sv_frame_t index = (i + startIndex) * channels + channel;
Chris@1038 459 if (index >= (sv_frame_t)cache.size()) break;
Chris@147 460
Chris@147 461 const Range &range = cache[index];
Chris@410 462 if (range.max() > max || got == 0) max = range.max();
Chris@410 463 if (range.min() < min || got == 0) min = range.min();
Chris@410 464 total += range.absmean();
Chris@147 465
Chris@147 466 ++i;
Chris@300 467 ++got;
Chris@147 468
Chris@300 469 if (got == div) {
Chris@1038 470 ranges.push_back(Range(min, max, total / float(got)));
Chris@147 471 min = max = total = 0.0f;
Chris@300 472 got = 0;
Chris@147 473 }
Chris@147 474 }
Chris@147 475
Chris@300 476 if (got > 0) {
Chris@1038 477 ranges.push_back(Range(min, max, total / float(got)));
Chris@147 478 }
Chris@147 479 }
Chris@147 480
Chris@236 481 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@690 482 SVDEBUG << "returning " << ranges.size() << " ranges" << endl;
Chris@236 483 #endif
Chris@225 484 return;
Chris@147 485 }
Chris@147 486
Chris@147 487 WaveFileModel::Range
Chris@1038 488 WaveFileModel::getSummary(int channel, sv_frame_t start, sv_frame_t count) const
Chris@147 489 {
Chris@147 490 Range range;
Chris@147 491 if (!isOK()) return range;
Chris@147 492
Chris@300 493 if (start > m_startFrame) start -= m_startFrame;
Chris@300 494 else if (count <= m_startFrame - start) return range;
Chris@300 495 else {
Chris@300 496 count -= (m_startFrame - start);
Chris@300 497 start = 0;
Chris@147 498 }
Chris@147 499
Chris@929 500 int blockSize;
Chris@300 501 for (blockSize = 1; blockSize <= count; blockSize *= 2);
Chris@300 502 if (blockSize > 1) blockSize /= 2;
Chris@147 503
Chris@147 504 bool first = false;
Chris@147 505
Chris@1038 506 sv_frame_t blockStart = (start / blockSize) * blockSize;
Chris@1038 507 sv_frame_t blockEnd = ((start + count) / blockSize) * blockSize;
Chris@147 508
Chris@147 509 if (blockStart < start) blockStart += blockSize;
Chris@147 510
Chris@147 511 if (blockEnd > blockStart) {
Chris@225 512 RangeBlock ranges;
Chris@300 513 getSummaries(channel, blockStart, blockEnd - blockStart, ranges, blockSize);
Chris@929 514 for (int i = 0; i < (int)ranges.size(); ++i) {
Chris@410 515 if (first || ranges[i].min() < range.min()) range.setMin(ranges[i].min());
Chris@410 516 if (first || ranges[i].max() > range.max()) range.setMax(ranges[i].max());
Chris@410 517 if (first || ranges[i].absmean() < range.absmean()) range.setAbsmean(ranges[i].absmean());
Chris@147 518 first = false;
Chris@147 519 }
Chris@147 520 }
Chris@147 521
Chris@147 522 if (blockStart > start) {
Chris@300 523 Range startRange = getSummary(channel, start, blockStart - start);
Chris@410 524 range.setMin(std::min(range.min(), startRange.min()));
Chris@410 525 range.setMax(std::max(range.max(), startRange.max()));
Chris@410 526 range.setAbsmean(std::min(range.absmean(), startRange.absmean()));
Chris@147 527 }
Chris@147 528
Chris@300 529 if (blockEnd < start + count) {
Chris@300 530 Range endRange = getSummary(channel, blockEnd, start + count - blockEnd);
Chris@410 531 range.setMin(std::min(range.min(), endRange.min()));
Chris@410 532 range.setMax(std::max(range.max(), endRange.max()));
Chris@410 533 range.setAbsmean(std::min(range.absmean(), endRange.absmean()));
Chris@147 534 }
Chris@147 535
Chris@147 536 return range;
Chris@147 537 }
Chris@147 538
Chris@147 539 void
Chris@147 540 WaveFileModel::fillCache()
Chris@147 541 {
Chris@147 542 m_mutex.lock();
Chris@188 543
Chris@147 544 m_updateTimer = new QTimer(this);
Chris@147 545 connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(fillTimerTimedOut()));
Chris@147 546 m_updateTimer->start(100);
Chris@188 547
Chris@147 548 m_fillThread = new RangeCacheFillThread(*this);
Chris@147 549 connect(m_fillThread, SIGNAL(finished()), this, SLOT(cacheFilled()));
Chris@188 550
Chris@147 551 m_mutex.unlock();
Chris@147 552 m_fillThread->start();
Chris@188 553
Chris@236 554 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@690 555 SVDEBUG << "WaveFileModel::fillCache: started fill thread" << endl;
Chris@236 556 #endif
Chris@147 557 }
Chris@147 558
Chris@147 559 void
Chris@147 560 WaveFileModel::fillTimerTimedOut()
Chris@147 561 {
Chris@147 562 if (m_fillThread) {
Chris@1038 563 sv_frame_t fillExtent = m_fillThread->getFillExtent();
Chris@236 564 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@690 565 SVDEBUG << "WaveFileModel::fillTimerTimedOut: extent = " << fillExtent << endl;
Chris@236 566 #endif
Chris@147 567 if (fillExtent > m_lastFillExtent) {
Chris@931 568 emit modelChangedWithin(m_lastFillExtent, fillExtent);
Chris@147 569 m_lastFillExtent = fillExtent;
Chris@147 570 }
Chris@147 571 } else {
Chris@236 572 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@690 573 SVDEBUG << "WaveFileModel::fillTimerTimedOut: no thread" << endl;
Chris@236 574 #endif
Chris@147 575 emit modelChanged();
Chris@147 576 }
Chris@147 577 }
Chris@147 578
Chris@147 579 void
Chris@147 580 WaveFileModel::cacheFilled()
Chris@147 581 {
Chris@147 582 m_mutex.lock();
Chris@147 583 delete m_fillThread;
Chris@147 584 m_fillThread = 0;
Chris@147 585 delete m_updateTimer;
Chris@147 586 m_updateTimer = 0;
Chris@147 587 m_mutex.unlock();
Chris@267 588 if (getEndFrame() > m_lastFillExtent) {
Chris@931 589 emit modelChangedWithin(m_lastFillExtent, getEndFrame());
Chris@267 590 }
Chris@147 591 emit modelChanged();
Chris@411 592 emit ready();
Chris@236 593 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@690 594 SVDEBUG << "WaveFileModel::cacheFilled" << endl;
Chris@236 595 #endif
Chris@175 596 }
Chris@175 597
Chris@175 598 void
Chris@147 599 WaveFileModel::RangeCacheFillThread::run()
Chris@147 600 {
Chris@929 601 int cacheBlockSize[2];
Chris@179 602 cacheBlockSize[0] = (1 << m_model.m_zoomConstraint.getMinCachePower());
Chris@1038 603 cacheBlockSize[1] = (int((1 << m_model.m_zoomConstraint.getMinCachePower()) *
Chris@608 604 sqrt(2.) + 0.01));
Chris@147 605
Chris@1038 606 sv_frame_t frame = 0;
Chris@1053 607 const sv_frame_t readBlockSize = 16384;
Chris@290 608 SampleBlock block;
Chris@147 609
Chris@147 610 if (!m_model.isOK()) return;
Chris@147 611
Chris@929 612 int channels = m_model.getChannelCount();
Chris@187 613 bool updating = m_model.m_reader->isUpdating();
Chris@187 614
Chris@187 615 if (updating) {
Chris@187 616 while (channels == 0 && !m_model.m_exiting) {
Chris@690 617 // SVDEBUG << "WaveFileModel::fill: Waiting for channels..." << endl;
Chris@187 618 sleep(1);
Chris@187 619 channels = m_model.getChannelCount();
Chris@187 620 }
Chris@187 621 }
Chris@147 622
Chris@147 623 Range *range = new Range[2 * channels];
Chris@410 624 float *means = new float[2 * channels];
Chris@929 625 int count[2];
Chris@147 626 count[0] = count[1] = 0;
Chris@411 627 for (int i = 0; i < 2 * channels; ++i) {
Chris@411 628 means[i] = 0.f;
Chris@411 629 }
Chris@176 630
Chris@176 631 bool first = true;
Chris@176 632
Chris@176 633 while (first || updating) {
Chris@176 634
Chris@176 635 updating = m_model.m_reader->isUpdating();
Chris@187 636 m_frameCount = m_model.getFrameCount();
Chris@175 637
Chris@690 638 // SVDEBUG << "WaveFileModel::fill: frame = " << frame << ", count = " << m_frameCount << endl;
Chris@147 639
Chris@176 640 while (frame < m_frameCount) {
Chris@147 641
Chris@690 642 // SVDEBUG << "WaveFileModel::fill inner loop: frame = " << frame << ", count = " << m_frameCount << ", blocksize " << readBlockSize << endl;
Chris@265 643
Chris@176 644 if (updating && (frame + readBlockSize > m_frameCount)) break;
Chris@176 645
Chris@1041 646 block = m_model.m_reader->getInterleavedFrames(frame, readBlockSize);
Chris@176 647
Chris@843 648 // cerr << "block is " << block.size() << endl;
Chris@265 649
Chris@1038 650 for (sv_frame_t i = 0; i < readBlockSize; ++i) {
Chris@147 651
Chris@929 652 if (channels * i + channels > (int)block.size()) break;
Chris@232 653
Chris@411 654 for (int ch = 0; ch < channels; ++ch) {
Chris@147 655
Chris@1038 656 sv_frame_t index = channels * i + ch;
Chris@176 657 float sample = block[index];
Chris@176 658
Chris@1053 659 for (int cacheType = 0; cacheType < 2; ++cacheType) { // cache type
Chris@176 660
Chris@1053 661 sv_frame_t rangeIndex = ch * 2 + cacheType;
Chris@1053 662 range[rangeIndex].sample(sample);
Chris@410 663 means[rangeIndex] += fabsf(sample);
Chris@176 664 }
Chris@176 665 }
Chris@1042 666
Chris@1042 667 //!!! this looks like a ludicrous way to do synchronisation
Chris@176 668 QMutexLocker locker(&m_model.m_mutex);
Chris@232 669
Chris@1053 670 for (int cacheType = 0; cacheType < 2; ++cacheType) {
Chris@232 671
Chris@1053 672 if (++count[cacheType] == cacheBlockSize[cacheType]) {
Chris@410 673
Chris@929 674 for (int ch = 0; ch < int(channels); ++ch) {
Chris@1053 675 int rangeIndex = ch * 2 + cacheType;
Chris@1053 676 means[rangeIndex] = means[rangeIndex] / float(count[cacheType]);
Chris@410 677 range[rangeIndex].setAbsmean(means[rangeIndex]);
Chris@1053 678 m_model.m_cache[cacheType].push_back(range[rangeIndex]);
Chris@176 679 range[rangeIndex] = Range();
Chris@411 680 means[rangeIndex] = 0.f;
Chris@176 681 }
Chris@232 682
Chris@1053 683 count[cacheType] = 0;
Chris@176 684 }
Chris@176 685 }
Chris@147 686
Chris@176 687 ++frame;
Chris@147 688 }
Chris@147 689
Chris@176 690 if (m_model.m_exiting) break;
Chris@176 691
Chris@176 692 m_fillExtent = frame;
Chris@147 693 }
Chris@147 694
Chris@843 695 // cerr << "WaveFileModel: inner loop ended" << endl;
Chris@265 696
Chris@176 697 first = false;
Chris@177 698 if (m_model.m_exiting) break;
Chris@187 699 if (updating) {
Chris@843 700 // cerr << "sleeping..." << endl;
Chris@187 701 sleep(1);
Chris@187 702 }
Chris@147 703 }
Chris@147 704
Chris@177 705 if (!m_model.m_exiting) {
Chris@177 706
Chris@177 707 QMutexLocker locker(&m_model.m_mutex);
Chris@232 708
Chris@1053 709 for (int cacheType = 0; cacheType < 2; ++cacheType) {
Chris@232 710
Chris@1053 711 if (count[cacheType] > 0) {
Chris@232 712
Chris@929 713 for (int ch = 0; ch < int(channels); ++ch) {
Chris@1053 714 int rangeIndex = ch * 2 + cacheType;
Chris@1053 715 means[rangeIndex] = means[rangeIndex] / float(count[cacheType]);
Chris@410 716 range[rangeIndex].setAbsmean(means[rangeIndex]);
Chris@1053 717 m_model.m_cache[cacheType].push_back(range[rangeIndex]);
Chris@177 718 range[rangeIndex] = Range();
Chris@411 719 means[rangeIndex] = 0.f;
Chris@177 720 }
Chris@232 721
Chris@1053 722 count[cacheType] = 0;
Chris@147 723 }
Chris@177 724
Chris@1053 725 const Range &rr = *m_model.m_cache[cacheType].begin();
Chris@1053 726 MUNLOCK(&rr, m_model.m_cache[cacheType].capacity() * sizeof(Range));
Chris@147 727 }
Chris@147 728 }
Chris@147 729
Chris@410 730 delete[] means;
Chris@147 731 delete[] range;
Chris@147 732
Chris@175 733 m_fillExtent = m_frameCount;
Chris@236 734
Chris@236 735 #ifdef DEBUG_WAVE_FILE_MODEL
Chris@1053 736 for (int cacheType = 0; cacheType < 2; ++cacheType) {
Chris@1053 737 cerr << "Cache type " << cacheType << " now contains " << m_model.m_cache[cacheType].size() << " ranges" << endl;
Chris@236 738 }
Chris@236 739 #endif
Chris@147 740 }
Chris@147 741
Chris@163 742 void
Chris@163 743 WaveFileModel::toXml(QTextStream &out,
Chris@163 744 QString indent,
Chris@163 745 QString extraAttributes) const
Chris@163 746 {
Chris@163 747 Model::toXml(out, indent,
Chris@163 748 QString("type=\"wavefile\" file=\"%1\" %2")
Chris@279 749 .arg(encodeEntities(m_path)).arg(extraAttributes));
Chris@163 750 }
Chris@163 751
Chris@147 752