annotate audioio/AudioCallbackPlaySource.cpp @ 26:d88d117e0c34

* Add mono timestretch toggle button; some more work on getting blocksize etc parameters through to plugins
author Chris Cannam
date Mon, 18 Sep 2006 16:43:17 +0000
parents e74f508db18c
children 37af203dbd15
rev   line source
Chris@0 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@0 2
Chris@0 3 /*
Chris@0 4 Sonic Visualiser
Chris@0 5 An audio file viewer and annotation editor.
Chris@0 6 Centre for Digital Music, Queen Mary, University of London.
Chris@0 7 This file copyright 2006 Chris Cannam.
Chris@0 8
Chris@0 9 This program is free software; you can redistribute it and/or
Chris@0 10 modify it under the terms of the GNU General Public License as
Chris@0 11 published by the Free Software Foundation; either version 2 of the
Chris@0 12 License, or (at your option) any later version. See the file
Chris@0 13 COPYING included with this distribution for more information.
Chris@0 14 */
Chris@0 15
Chris@0 16 #include "AudioCallbackPlaySource.h"
Chris@0 17
Chris@0 18 #include "AudioGenerator.h"
Chris@0 19
Chris@1 20 #include "data/model/Model.h"
Chris@1 21 #include "view/ViewManager.h"
Chris@0 22 #include "base/PlayParameterRepository.h"
Chris@1 23 #include "data/model/DenseTimeValueModel.h"
Chris@1 24 #include "data/model/SparseOneDimensionalModel.h"
Chris@14 25 #include "PhaseVocoderTimeStretcher.h"
Chris@0 26
Chris@0 27 #include <iostream>
Chris@0 28 #include <cassert>
Chris@0 29
Chris@0 30 //#define DEBUG_AUDIO_PLAY_SOURCE 1
Chris@14 31 //#define DEBUG_AUDIO_PLAY_SOURCE_PLAYING 1
Chris@0 32
Chris@0 33 //const size_t AudioCallbackPlaySource::m_ringBufferSize = 102400;
Chris@0 34 const size_t AudioCallbackPlaySource::m_ringBufferSize = 131071;
Chris@0 35
Chris@0 36 AudioCallbackPlaySource::AudioCallbackPlaySource(ViewManager *manager) :
Chris@0 37 m_viewManager(manager),
Chris@0 38 m_audioGenerator(new AudioGenerator()),
Chris@0 39 m_readBuffers(0),
Chris@0 40 m_writeBuffers(0),
Chris@0 41 m_readBufferFill(0),
Chris@0 42 m_writeBufferFill(0),
Chris@0 43 m_bufferScavenger(1),
Chris@0 44 m_sourceChannelCount(0),
Chris@0 45 m_blockSize(1024),
Chris@0 46 m_sourceSampleRate(0),
Chris@0 47 m_targetSampleRate(0),
Chris@0 48 m_playLatency(0),
Chris@0 49 m_playing(false),
Chris@0 50 m_exiting(false),
Chris@0 51 m_lastModelEndFrame(0),
Chris@0 52 m_outputLeft(0.0),
Chris@0 53 m_outputRight(0.0),
Chris@0 54 m_timeStretcher(0),
Chris@0 55 m_fillThread(0),
Chris@0 56 m_converter(0)
Chris@0 57 {
Chris@0 58 m_viewManager->setAudioPlaySource(this);
Chris@0 59
Chris@0 60 connect(m_viewManager, SIGNAL(selectionChanged()),
Chris@0 61 this, SLOT(selectionChanged()));
Chris@0 62 connect(m_viewManager, SIGNAL(playLoopModeChanged()),
Chris@0 63 this, SLOT(playLoopModeChanged()));
Chris@0 64 connect(m_viewManager, SIGNAL(playSelectionModeChanged()),
Chris@0 65 this, SLOT(playSelectionModeChanged()));
Chris@0 66
Chris@0 67 connect(PlayParameterRepository::getInstance(),
Chris@0 68 SIGNAL(playParametersChanged(PlayParameters *)),
Chris@0 69 this, SLOT(playParametersChanged(PlayParameters *)));
Chris@0 70 }
Chris@0 71
Chris@0 72 AudioCallbackPlaySource::~AudioCallbackPlaySource()
Chris@0 73 {
Chris@0 74 m_exiting = true;
Chris@0 75
Chris@0 76 if (m_fillThread) {
Chris@0 77 m_condition.wakeAll();
Chris@0 78 m_fillThread->wait();
Chris@0 79 delete m_fillThread;
Chris@0 80 }
Chris@0 81
Chris@0 82 clearModels();
Chris@0 83
Chris@0 84 if (m_readBuffers != m_writeBuffers) {
Chris@0 85 delete m_readBuffers;
Chris@0 86 }
Chris@0 87
Chris@0 88 delete m_writeBuffers;
Chris@0 89
Chris@0 90 delete m_audioGenerator;
Chris@0 91
Chris@0 92 m_bufferScavenger.scavenge(true);
Chris@0 93 }
Chris@0 94
Chris@0 95 void
Chris@0 96 AudioCallbackPlaySource::addModel(Model *model)
Chris@0 97 {
Chris@0 98 if (m_models.find(model) != m_models.end()) return;
Chris@0 99
Chris@0 100 bool canPlay = m_audioGenerator->addModel(model);
Chris@0 101
Chris@0 102 m_mutex.lock();
Chris@0 103
Chris@0 104 m_models.insert(model);
Chris@0 105 if (model->getEndFrame() > m_lastModelEndFrame) {
Chris@0 106 m_lastModelEndFrame = model->getEndFrame();
Chris@0 107 }
Chris@0 108
Chris@0 109 bool buffersChanged = false, srChanged = false;
Chris@0 110
Chris@0 111 size_t modelChannels = 1;
Chris@0 112 DenseTimeValueModel *dtvm = dynamic_cast<DenseTimeValueModel *>(model);
Chris@0 113 if (dtvm) modelChannels = dtvm->getChannelCount();
Chris@0 114 if (modelChannels > m_sourceChannelCount) {
Chris@0 115 m_sourceChannelCount = modelChannels;
Chris@0 116 }
Chris@0 117
Chris@0 118 // std::cerr << "Adding model with " << modelChannels << " channels " << std::endl;
Chris@0 119
Chris@0 120 if (m_sourceSampleRate == 0) {
Chris@0 121
Chris@0 122 m_sourceSampleRate = model->getSampleRate();
Chris@0 123 srChanged = true;
Chris@0 124
Chris@0 125 } else if (model->getSampleRate() != m_sourceSampleRate) {
Chris@0 126
Chris@0 127 // If this is a dense time-value model and we have no other, we
Chris@0 128 // can just switch to this model's sample rate
Chris@0 129
Chris@0 130 if (dtvm) {
Chris@0 131
Chris@0 132 bool conflicting = false;
Chris@0 133
Chris@0 134 for (std::set<Model *>::const_iterator i = m_models.begin();
Chris@0 135 i != m_models.end(); ++i) {
Chris@0 136 if (*i != dtvm && dynamic_cast<DenseTimeValueModel *>(*i)) {
Chris@0 137 std::cerr << "AudioCallbackPlaySource::addModel: Conflicting dense time-value model " << *i << " found" << std::endl;
Chris@0 138 conflicting = true;
Chris@0 139 break;
Chris@0 140 }
Chris@0 141 }
Chris@0 142
Chris@0 143 if (conflicting) {
Chris@0 144
Chris@0 145 std::cerr << "AudioCallbackPlaySource::addModel: ERROR: "
Chris@0 146 << "New model sample rate does not match" << std::endl
Chris@0 147 << "existing model(s) (new " << model->getSampleRate()
Chris@0 148 << " vs " << m_sourceSampleRate
Chris@0 149 << "), playback will be wrong"
Chris@0 150 << std::endl;
Chris@0 151
Chris@0 152 emit sampleRateMismatch(model->getSampleRate(), m_sourceSampleRate,
Chris@0 153 false);
Chris@0 154 } else {
Chris@0 155 m_sourceSampleRate = model->getSampleRate();
Chris@0 156 srChanged = true;
Chris@0 157 }
Chris@0 158 }
Chris@0 159 }
Chris@0 160
Chris@0 161 if (!m_writeBuffers || (m_writeBuffers->size() < getTargetChannelCount())) {
Chris@0 162 clearRingBuffers(true, getTargetChannelCount());
Chris@0 163 buffersChanged = true;
Chris@0 164 } else {
Chris@0 165 if (canPlay) clearRingBuffers(true);
Chris@0 166 }
Chris@0 167
Chris@0 168 if (buffersChanged || srChanged) {
Chris@0 169 if (m_converter) {
Chris@0 170 src_delete(m_converter);
Chris@0 171 m_converter = 0;
Chris@0 172 }
Chris@0 173 }
Chris@0 174
Chris@0 175 m_mutex.unlock();
Chris@0 176
Chris@0 177 m_audioGenerator->setTargetChannelCount(getTargetChannelCount());
Chris@0 178
Chris@0 179 if (!m_fillThread) {
Chris@0 180 m_fillThread = new AudioCallbackPlaySourceFillThread(*this);
Chris@0 181 m_fillThread->start();
Chris@0 182 }
Chris@0 183
Chris@0 184 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 185 std::cerr << "AudioCallbackPlaySource::addModel: emitting modelReplaced" << std::endl;
Chris@0 186 #endif
Chris@0 187
Chris@0 188 if (buffersChanged || srChanged) {
Chris@0 189 emit modelReplaced();
Chris@0 190 }
Chris@0 191
Chris@0 192 m_condition.wakeAll();
Chris@0 193 }
Chris@0 194
Chris@0 195 void
Chris@0 196 AudioCallbackPlaySource::removeModel(Model *model)
Chris@0 197 {
Chris@0 198 m_mutex.lock();
Chris@0 199
Chris@0 200 m_models.erase(model);
Chris@0 201
Chris@0 202 if (m_models.empty()) {
Chris@0 203 if (m_converter) {
Chris@0 204 src_delete(m_converter);
Chris@0 205 m_converter = 0;
Chris@0 206 }
Chris@0 207 m_sourceSampleRate = 0;
Chris@0 208 }
Chris@0 209
Chris@0 210 size_t lastEnd = 0;
Chris@0 211 for (std::set<Model *>::const_iterator i = m_models.begin();
Chris@0 212 i != m_models.end(); ++i) {
Chris@0 213 // std::cerr << "AudioCallbackPlaySource::removeModel(" << model << "): checking end frame on model " << *i << std::endl;
Chris@0 214 if ((*i)->getEndFrame() > lastEnd) lastEnd = (*i)->getEndFrame();
Chris@0 215 // std::cerr << "(done, lastEnd now " << lastEnd << ")" << std::endl;
Chris@0 216 }
Chris@0 217 m_lastModelEndFrame = lastEnd;
Chris@0 218
Chris@0 219 m_mutex.unlock();
Chris@0 220
Chris@0 221 m_audioGenerator->removeModel(model);
Chris@0 222
Chris@0 223 clearRingBuffers();
Chris@0 224 }
Chris@0 225
Chris@0 226 void
Chris@0 227 AudioCallbackPlaySource::clearModels()
Chris@0 228 {
Chris@0 229 m_mutex.lock();
Chris@0 230
Chris@0 231 m_models.clear();
Chris@0 232
Chris@0 233 if (m_converter) {
Chris@0 234 src_delete(m_converter);
Chris@0 235 m_converter = 0;
Chris@0 236 }
Chris@0 237
Chris@0 238 m_lastModelEndFrame = 0;
Chris@0 239
Chris@0 240 m_sourceSampleRate = 0;
Chris@0 241
Chris@0 242 m_mutex.unlock();
Chris@0 243
Chris@0 244 m_audioGenerator->clearModels();
Chris@0 245 }
Chris@0 246
Chris@0 247 void
Chris@0 248 AudioCallbackPlaySource::clearRingBuffers(bool haveLock, size_t count)
Chris@0 249 {
Chris@0 250 if (!haveLock) m_mutex.lock();
Chris@0 251
Chris@0 252 if (count == 0) {
Chris@0 253 if (m_writeBuffers) count = m_writeBuffers->size();
Chris@0 254 }
Chris@0 255
Chris@0 256 size_t sf = m_readBufferFill;
Chris@0 257 RingBuffer<float> *rb = getReadRingBuffer(0);
Chris@0 258 if (rb) {
Chris@0 259 //!!! This is incorrect if we're in a non-contiguous selection
Chris@0 260 //Same goes for all related code (subtracting the read space
Chris@0 261 //from the fill frame to try to establish where the effective
Chris@0 262 //pre-resample/timestretch read pointer is)
Chris@0 263 size_t rs = rb->getReadSpace();
Chris@0 264 if (rs < sf) sf -= rs;
Chris@0 265 else sf = 0;
Chris@0 266 }
Chris@0 267 m_writeBufferFill = sf;
Chris@0 268
Chris@0 269 if (m_readBuffers != m_writeBuffers) {
Chris@0 270 delete m_writeBuffers;
Chris@0 271 }
Chris@0 272
Chris@0 273 m_writeBuffers = new RingBufferVector;
Chris@0 274
Chris@0 275 for (size_t i = 0; i < count; ++i) {
Chris@0 276 m_writeBuffers->push_back(new RingBuffer<float>(m_ringBufferSize));
Chris@0 277 }
Chris@0 278
Chris@0 279 // std::cerr << "AudioCallbackPlaySource::clearRingBuffers: Created "
Chris@0 280 // << count << " write buffers" << std::endl;
Chris@0 281
Chris@0 282 if (!haveLock) {
Chris@0 283 m_mutex.unlock();
Chris@0 284 }
Chris@0 285 }
Chris@0 286
Chris@0 287 void
Chris@0 288 AudioCallbackPlaySource::play(size_t startFrame)
Chris@0 289 {
Chris@0 290 if (m_viewManager->getPlaySelectionMode() &&
Chris@0 291 !m_viewManager->getSelections().empty()) {
Chris@0 292 MultiSelection::SelectionList selections = m_viewManager->getSelections();
Chris@0 293 MultiSelection::SelectionList::iterator i = selections.begin();
Chris@0 294 if (i != selections.end()) {
Chris@0 295 if (startFrame < i->getStartFrame()) {
Chris@0 296 startFrame = i->getStartFrame();
Chris@0 297 } else {
Chris@0 298 MultiSelection::SelectionList::iterator j = selections.end();
Chris@0 299 --j;
Chris@0 300 if (startFrame >= j->getEndFrame()) {
Chris@0 301 startFrame = i->getStartFrame();
Chris@0 302 }
Chris@0 303 }
Chris@0 304 }
Chris@0 305 } else {
Chris@0 306 if (startFrame >= m_lastModelEndFrame) {
Chris@0 307 startFrame = 0;
Chris@0 308 }
Chris@0 309 }
Chris@0 310
Chris@0 311 // The fill thread will automatically empty its buffers before
Chris@0 312 // starting again if we have not so far been playing, but not if
Chris@0 313 // we're just re-seeking.
Chris@0 314
Chris@0 315 m_mutex.lock();
Chris@0 316 if (m_playing) {
Chris@0 317 m_readBufferFill = m_writeBufferFill = startFrame;
Chris@0 318 if (m_readBuffers) {
Chris@0 319 for (size_t c = 0; c < getTargetChannelCount(); ++c) {
Chris@0 320 RingBuffer<float> *rb = getReadRingBuffer(c);
Chris@0 321 if (rb) rb->reset();
Chris@0 322 }
Chris@0 323 }
Chris@0 324 if (m_converter) src_reset(m_converter);
Chris@0 325 } else {
Chris@0 326 if (m_converter) src_reset(m_converter);
Chris@0 327 m_readBufferFill = m_writeBufferFill = startFrame;
Chris@0 328 }
Chris@0 329 m_mutex.unlock();
Chris@0 330
Chris@0 331 m_audioGenerator->reset();
Chris@0 332
Chris@0 333 bool changed = !m_playing;
Chris@0 334 m_playing = true;
Chris@0 335 m_condition.wakeAll();
Chris@0 336 if (changed) emit playStatusChanged(m_playing);
Chris@0 337 }
Chris@0 338
Chris@0 339 void
Chris@0 340 AudioCallbackPlaySource::stop()
Chris@0 341 {
Chris@0 342 bool changed = m_playing;
Chris@0 343 m_playing = false;
Chris@0 344 m_condition.wakeAll();
Chris@0 345 if (changed) emit playStatusChanged(m_playing);
Chris@0 346 }
Chris@0 347
Chris@0 348 void
Chris@0 349 AudioCallbackPlaySource::selectionChanged()
Chris@0 350 {
Chris@0 351 if (m_viewManager->getPlaySelectionMode()) {
Chris@0 352 clearRingBuffers();
Chris@0 353 }
Chris@0 354 }
Chris@0 355
Chris@0 356 void
Chris@0 357 AudioCallbackPlaySource::playLoopModeChanged()
Chris@0 358 {
Chris@0 359 clearRingBuffers();
Chris@0 360 }
Chris@0 361
Chris@0 362 void
Chris@0 363 AudioCallbackPlaySource::playSelectionModeChanged()
Chris@0 364 {
Chris@0 365 if (!m_viewManager->getSelections().empty()) {
Chris@0 366 clearRingBuffers();
Chris@0 367 }
Chris@0 368 }
Chris@0 369
Chris@0 370 void
Chris@0 371 AudioCallbackPlaySource::playParametersChanged(PlayParameters *params)
Chris@0 372 {
Chris@0 373 clearRingBuffers();
Chris@0 374 }
Chris@0 375
Chris@0 376 void
Chris@0 377 AudioCallbackPlaySource::setTargetBlockSize(size_t size)
Chris@0 378 {
Chris@0 379 // std::cerr << "AudioCallbackPlaySource::setTargetBlockSize() -> " << size << std::endl;
Chris@0 380 assert(size < m_ringBufferSize);
Chris@0 381 m_blockSize = size;
Chris@0 382 }
Chris@0 383
Chris@0 384 size_t
Chris@0 385 AudioCallbackPlaySource::getTargetBlockSize() const
Chris@0 386 {
Chris@0 387 // std::cerr << "AudioCallbackPlaySource::getTargetBlockSize() -> " << m_blockSize << std::endl;
Chris@0 388 return m_blockSize;
Chris@0 389 }
Chris@0 390
Chris@0 391 void
Chris@0 392 AudioCallbackPlaySource::setTargetPlayLatency(size_t latency)
Chris@0 393 {
Chris@0 394 m_playLatency = latency;
Chris@0 395 }
Chris@0 396
Chris@0 397 size_t
Chris@0 398 AudioCallbackPlaySource::getTargetPlayLatency() const
Chris@0 399 {
Chris@0 400 return m_playLatency;
Chris@0 401 }
Chris@0 402
Chris@0 403 size_t
Chris@0 404 AudioCallbackPlaySource::getCurrentPlayingFrame()
Chris@0 405 {
Chris@0 406 bool resample = false;
Chris@0 407 double ratio = 1.0;
Chris@0 408
Chris@0 409 if (getSourceSampleRate() != getTargetSampleRate()) {
Chris@0 410 resample = true;
Chris@0 411 ratio = double(getSourceSampleRate()) / double(getTargetSampleRate());
Chris@0 412 }
Chris@0 413
Chris@0 414 size_t readSpace = 0;
Chris@0 415 for (size_t c = 0; c < getTargetChannelCount(); ++c) {
Chris@0 416 RingBuffer<float> *rb = getReadRingBuffer(c);
Chris@0 417 if (rb) {
Chris@0 418 size_t spaceHere = rb->getReadSpace();
Chris@0 419 if (c == 0 || spaceHere < readSpace) readSpace = spaceHere;
Chris@0 420 }
Chris@0 421 }
Chris@0 422
Chris@0 423 if (resample) {
Chris@0 424 readSpace = size_t(readSpace * ratio + 0.1);
Chris@0 425 }
Chris@0 426
Chris@0 427 size_t latency = m_playLatency;
Chris@0 428 if (resample) latency = size_t(m_playLatency * ratio + 0.1);
Chris@16 429
Chris@16 430 PhaseVocoderTimeStretcher *timeStretcher = m_timeStretcher;
Chris@0 431 if (timeStretcher) {
Chris@16 432 latency += timeStretcher->getProcessingLatency();
Chris@0 433 }
Chris@0 434
Chris@0 435 latency += readSpace;
Chris@0 436 size_t bufferedFrame = m_readBufferFill;
Chris@0 437
Chris@0 438 bool looping = m_viewManager->getPlayLoopMode();
Chris@0 439 bool constrained = (m_viewManager->getPlaySelectionMode() &&
Chris@0 440 !m_viewManager->getSelections().empty());
Chris@0 441
Chris@0 442 size_t framePlaying = bufferedFrame;
Chris@0 443
Chris@0 444 if (looping && !constrained) {
Chris@0 445 while (framePlaying < latency) framePlaying += m_lastModelEndFrame;
Chris@0 446 }
Chris@0 447
Chris@0 448 if (framePlaying > latency) framePlaying -= latency;
Chris@0 449 else framePlaying = 0;
Chris@0 450
Chris@0 451 if (!constrained) {
Chris@0 452 if (!looping && framePlaying > m_lastModelEndFrame) {
Chris@0 453 framePlaying = m_lastModelEndFrame;
Chris@0 454 stop();
Chris@0 455 }
Chris@0 456 return framePlaying;
Chris@0 457 }
Chris@0 458
Chris@0 459 MultiSelection::SelectionList selections = m_viewManager->getSelections();
Chris@0 460 MultiSelection::SelectionList::const_iterator i;
Chris@0 461
Chris@0 462 i = selections.begin();
Chris@0 463 size_t rangeStart = i->getStartFrame();
Chris@0 464
Chris@0 465 i = selections.end();
Chris@0 466 --i;
Chris@0 467 size_t rangeEnd = i->getEndFrame();
Chris@0 468
Chris@0 469 for (i = selections.begin(); i != selections.end(); ++i) {
Chris@0 470 if (i->contains(bufferedFrame)) break;
Chris@0 471 }
Chris@0 472
Chris@0 473 size_t f = bufferedFrame;
Chris@0 474
Chris@0 475 // std::cerr << "getCurrentPlayingFrame: f=" << f << ", latency=" << latency << ", rangeEnd=" << rangeEnd << std::endl;
Chris@0 476
Chris@0 477 if (i == selections.end()) {
Chris@0 478 --i;
Chris@0 479 if (i->getEndFrame() + latency < f) {
Chris@0 480 // std::cerr << "framePlaying = " << framePlaying << ", rangeEnd = " << rangeEnd << std::endl;
Chris@0 481
Chris@0 482 if (!looping && (framePlaying > rangeEnd)) {
Chris@0 483 // std::cerr << "STOPPING" << std::endl;
Chris@0 484 stop();
Chris@0 485 return rangeEnd;
Chris@0 486 } else {
Chris@0 487 return framePlaying;
Chris@0 488 }
Chris@0 489 } else {
Chris@0 490 // std::cerr << "latency <- " << latency << "-(" << f << "-" << i->getEndFrame() << ")" << std::endl;
Chris@0 491 latency -= (f - i->getEndFrame());
Chris@0 492 f = i->getEndFrame();
Chris@0 493 }
Chris@0 494 }
Chris@0 495
Chris@0 496 // std::cerr << "i=(" << i->getStartFrame() << "," << i->getEndFrame() << ") f=" << f << ", latency=" << latency << std::endl;
Chris@0 497
Chris@0 498 while (latency > 0) {
Chris@0 499 size_t offset = f - i->getStartFrame();
Chris@0 500 if (offset >= latency) {
Chris@0 501 if (f > latency) {
Chris@0 502 framePlaying = f - latency;
Chris@0 503 } else {
Chris@0 504 framePlaying = 0;
Chris@0 505 }
Chris@0 506 break;
Chris@0 507 } else {
Chris@0 508 if (i == selections.begin()) {
Chris@0 509 if (looping) {
Chris@0 510 i = selections.end();
Chris@0 511 }
Chris@0 512 }
Chris@0 513 latency -= offset;
Chris@0 514 --i;
Chris@0 515 f = i->getEndFrame();
Chris@0 516 }
Chris@0 517 }
Chris@0 518
Chris@0 519 return framePlaying;
Chris@0 520 }
Chris@0 521
Chris@0 522 void
Chris@0 523 AudioCallbackPlaySource::setOutputLevels(float left, float right)
Chris@0 524 {
Chris@0 525 m_outputLeft = left;
Chris@0 526 m_outputRight = right;
Chris@0 527 }
Chris@0 528
Chris@0 529 bool
Chris@0 530 AudioCallbackPlaySource::getOutputLevels(float &left, float &right)
Chris@0 531 {
Chris@0 532 left = m_outputLeft;
Chris@0 533 right = m_outputRight;
Chris@0 534 return true;
Chris@0 535 }
Chris@0 536
Chris@0 537 void
Chris@0 538 AudioCallbackPlaySource::setTargetSampleRate(size_t sr)
Chris@0 539 {
Chris@0 540 m_targetSampleRate = sr;
Chris@0 541
Chris@0 542 if (getSourceSampleRate() != getTargetSampleRate()) {
Chris@0 543
Chris@0 544 int err = 0;
Chris@0 545 m_converter = src_new(SRC_SINC_BEST_QUALITY,
Chris@0 546 getTargetChannelCount(), &err);
Chris@0 547 if (!m_converter) {
Chris@0 548 std::cerr
Chris@0 549 << "AudioCallbackPlaySource::setModel: ERROR in creating samplerate converter: "
Chris@0 550 << src_strerror(err) << std::endl;
Chris@0 551
Chris@0 552 emit sampleRateMismatch(getSourceSampleRate(),
Chris@0 553 getTargetSampleRate(),
Chris@0 554 false);
Chris@0 555 } else {
Chris@0 556
Chris@0 557 emit sampleRateMismatch(getSourceSampleRate(),
Chris@0 558 getTargetSampleRate(),
Chris@0 559 true);
Chris@0 560 }
Chris@0 561 }
Chris@0 562 }
Chris@0 563
Chris@0 564 size_t
Chris@0 565 AudioCallbackPlaySource::getTargetSampleRate() const
Chris@0 566 {
Chris@0 567 if (m_targetSampleRate) return m_targetSampleRate;
Chris@0 568 else return getSourceSampleRate();
Chris@0 569 }
Chris@0 570
Chris@0 571 size_t
Chris@0 572 AudioCallbackPlaySource::getSourceChannelCount() const
Chris@0 573 {
Chris@0 574 return m_sourceChannelCount;
Chris@0 575 }
Chris@0 576
Chris@0 577 size_t
Chris@0 578 AudioCallbackPlaySource::getTargetChannelCount() const
Chris@0 579 {
Chris@0 580 if (m_sourceChannelCount < 2) return 2;
Chris@0 581 return m_sourceChannelCount;
Chris@0 582 }
Chris@0 583
Chris@0 584 size_t
Chris@0 585 AudioCallbackPlaySource::getSourceSampleRate() const
Chris@0 586 {
Chris@0 587 return m_sourceSampleRate;
Chris@0 588 }
Chris@0 589
Chris@0 590 void
Chris@26 591 AudioCallbackPlaySource::setTimeStretch(float factor, bool sharpen, bool mono)
Chris@0 592 {
Chris@0 593 // Avoid locks -- create, assign, mark old one for scavenging
Chris@0 594 // later (as a call to getSourceSamples may still be using it)
Chris@0 595
Chris@16 596 PhaseVocoderTimeStretcher *existingStretcher = m_timeStretcher;
Chris@0 597
Chris@26 598 size_t channels = getTargetChannelCount();
Chris@26 599 if (mono) channels = 1;
Chris@26 600
Chris@16 601 if (existingStretcher &&
Chris@16 602 existingStretcher->getRatio() == factor &&
Chris@26 603 existingStretcher->getSharpening() == sharpen &&
Chris@26 604 existingStretcher->getChannelCount() == channels) {
Chris@0 605 return;
Chris@0 606 }
Chris@0 607
Chris@12 608 if (factor != 1) {
Chris@25 609
Chris@25 610 if (existingStretcher &&
Chris@26 611 existingStretcher->getSharpening() == sharpen &&
Chris@26 612 existingStretcher->getChannelCount() == channels) {
Chris@25 613 existingStretcher->setRatio(factor);
Chris@25 614 return;
Chris@25 615 }
Chris@25 616
Chris@16 617 PhaseVocoderTimeStretcher *newStretcher = new PhaseVocoderTimeStretcher
Chris@22 618 (getTargetSampleRate(),
Chris@26 619 channels,
Chris@16 620 factor,
Chris@16 621 sharpen,
Chris@15 622 lrintf(getTargetBlockSize() / factor));
Chris@26 623
Chris@0 624 m_timeStretcher = newStretcher;
Chris@26 625
Chris@0 626 } else {
Chris@0 627 m_timeStretcher = 0;
Chris@0 628 }
Chris@0 629
Chris@0 630 if (existingStretcher) {
Chris@0 631 m_timeStretcherScavenger.claim(existingStretcher);
Chris@0 632 }
Chris@0 633 }
Chris@26 634
Chris@0 635 size_t
Chris@0 636 AudioCallbackPlaySource::getSourceSamples(size_t count, float **buffer)
Chris@0 637 {
Chris@0 638 if (!m_playing) {
Chris@0 639 for (size_t ch = 0; ch < getTargetChannelCount(); ++ch) {
Chris@0 640 for (size_t i = 0; i < count; ++i) {
Chris@0 641 buffer[ch][i] = 0.0;
Chris@0 642 }
Chris@0 643 }
Chris@0 644 return 0;
Chris@0 645 }
Chris@0 646
Chris@16 647 PhaseVocoderTimeStretcher *ts = m_timeStretcher;
Chris@0 648
Chris@16 649 if (!ts || ts->getRatio() == 1) {
Chris@0 650
Chris@0 651 size_t got = 0;
Chris@0 652
Chris@0 653 for (size_t ch = 0; ch < getTargetChannelCount(); ++ch) {
Chris@0 654
Chris@0 655 RingBuffer<float> *rb = getReadRingBuffer(ch);
Chris@0 656
Chris@0 657 if (rb) {
Chris@0 658
Chris@0 659 // this is marginally more likely to leave our channels in
Chris@0 660 // sync after a processing failure than just passing "count":
Chris@0 661 size_t request = count;
Chris@0 662 if (ch > 0) request = got;
Chris@0 663
Chris@0 664 got = rb->read(buffer[ch], request);
Chris@0 665
Chris@0 666 #ifdef DEBUG_AUDIO_PLAY_SOURCE_PLAYING
Chris@0 667 std::cout << "AudioCallbackPlaySource::getSamples: got " << got << " samples on channel " << ch << ", signalling for more (possibly)" << std::endl;
Chris@0 668 #endif
Chris@0 669 }
Chris@0 670
Chris@0 671 for (size_t ch = 0; ch < getTargetChannelCount(); ++ch) {
Chris@0 672 for (size_t i = got; i < count; ++i) {
Chris@0 673 buffer[ch][i] = 0.0;
Chris@0 674 }
Chris@0 675 }
Chris@0 676 }
Chris@0 677
Chris@0 678 m_condition.wakeAll();
Chris@0 679 return got;
Chris@0 680 }
Chris@0 681
Chris@16 682 float ratio = ts->getRatio();
Chris@0 683
Chris@16 684 // std::cout << "ratio = " << ratio << std::endl;
Chris@0 685
Chris@26 686 size_t channels = getTargetChannelCount();
Chris@26 687 bool mix = (channels > 1 && ts->getChannelCount() == 1);
Chris@26 688
Chris@16 689 size_t available;
Chris@0 690
Chris@16 691 while ((available = ts->getAvailableOutputSamples()) < count) {
Chris@0 692
Chris@16 693 size_t reqd = lrintf((count - available) / ratio);
Chris@16 694 reqd = std::max(reqd, ts->getRequiredInputSamples());
Chris@16 695 if (reqd == 0) reqd = 1;
Chris@16 696
Chris@16 697 float *ib[channels];
Chris@0 698
Chris@16 699 size_t got = reqd;
Chris@0 700
Chris@26 701 if (mix) {
Chris@26 702 for (size_t c = 0; c < channels; ++c) {
Chris@26 703 if (c == 0) ib[c] = new float[reqd]; //!!! fix -- this is a rt function
Chris@26 704 else ib[c] = 0;
Chris@26 705 RingBuffer<float> *rb = getReadRingBuffer(c);
Chris@26 706 if (rb) {
Chris@26 707 size_t gotHere;
Chris@26 708 if (c > 0) gotHere = rb->readAdding(ib[0], got);
Chris@26 709 else gotHere = rb->read(ib[0], got);
Chris@26 710 if (gotHere < got) got = gotHere;
Chris@26 711 }
Chris@26 712 }
Chris@26 713 } else {
Chris@26 714 for (size_t c = 0; c < channels; ++c) {
Chris@26 715 ib[c] = new float[reqd]; //!!! fix -- this is a rt function
Chris@26 716 RingBuffer<float> *rb = getReadRingBuffer(c);
Chris@26 717 if (rb) {
Chris@26 718 size_t gotHere = rb->read(ib[c], got);
Chris@26 719 if (gotHere < got) got = gotHere;
Chris@26 720 }
Chris@16 721 }
Chris@16 722 }
Chris@0 723
Chris@16 724 if (got < reqd) {
Chris@16 725 std::cerr << "WARNING: Read underrun in playback ("
Chris@16 726 << got << " < " << reqd << ")" << std::endl;
Chris@16 727 }
Chris@16 728
Chris@16 729 ts->putInput(ib, got);
Chris@16 730
Chris@16 731 for (size_t c = 0; c < channels; ++c) {
Chris@16 732 delete[] ib[c];
Chris@16 733 }
Chris@16 734
Chris@16 735 if (got == 0) break;
Chris@16 736
Chris@16 737 if (ts->getAvailableOutputSamples() == available) {
Chris@16 738 std::cerr << "WARNING: AudioCallbackPlaySource::getSamples: Added " << got << " samples to time stretcher, created no new available output samples" << std::endl;
Chris@16 739 break;
Chris@16 740 }
Chris@0 741 }
Chris@0 742
Chris@16 743 ts->getOutput(buffer, count);
Chris@0 744
Chris@26 745 if (mix) {
Chris@26 746 for (size_t c = 1; c < channels; ++c) {
Chris@26 747 for (size_t i = 0; i < count; ++i) {
Chris@26 748 buffer[c][i] = buffer[0][i] / channels;
Chris@26 749 }
Chris@26 750 }
Chris@26 751 for (size_t i = 0; i < count; ++i) {
Chris@26 752 buffer[0][i] /= channels;
Chris@26 753 }
Chris@26 754 }
Chris@26 755
Chris@16 756 m_condition.wakeAll();
Chris@12 757
Chris@0 758 return count;
Chris@0 759 }
Chris@0 760
Chris@0 761 // Called from fill thread, m_playing true, mutex held
Chris@0 762 bool
Chris@0 763 AudioCallbackPlaySource::fillBuffers()
Chris@0 764 {
Chris@0 765 static float *tmp = 0;
Chris@0 766 static size_t tmpSize = 0;
Chris@0 767
Chris@0 768 size_t space = 0;
Chris@0 769 for (size_t c = 0; c < getTargetChannelCount(); ++c) {
Chris@0 770 RingBuffer<float> *wb = getWriteRingBuffer(c);
Chris@0 771 if (wb) {
Chris@0 772 size_t spaceHere = wb->getWriteSpace();
Chris@0 773 if (c == 0 || spaceHere < space) space = spaceHere;
Chris@0 774 }
Chris@0 775 }
Chris@0 776
Chris@0 777 if (space == 0) return false;
Chris@0 778
Chris@0 779 size_t f = m_writeBufferFill;
Chris@0 780
Chris@0 781 bool readWriteEqual = (m_readBuffers == m_writeBuffers);
Chris@0 782
Chris@0 783 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 784 std::cout << "AudioCallbackPlaySourceFillThread: filling " << space << " frames" << std::endl;
Chris@0 785 #endif
Chris@0 786
Chris@0 787 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 788 std::cout << "buffered to " << f << " already" << std::endl;
Chris@0 789 #endif
Chris@0 790
Chris@0 791 bool resample = (getSourceSampleRate() != getTargetSampleRate());
Chris@0 792
Chris@0 793 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 794 std::cout << (resample ? "" : "not ") << "resampling (source " << getSourceSampleRate() << ", target " << getTargetSampleRate() << ")" << std::endl;
Chris@0 795 #endif
Chris@0 796
Chris@0 797 size_t channels = getTargetChannelCount();
Chris@0 798
Chris@0 799 size_t orig = space;
Chris@0 800 size_t got = 0;
Chris@0 801
Chris@0 802 static float **bufferPtrs = 0;
Chris@0 803 static size_t bufferPtrCount = 0;
Chris@0 804
Chris@0 805 if (bufferPtrCount < channels) {
Chris@0 806 if (bufferPtrs) delete[] bufferPtrs;
Chris@0 807 bufferPtrs = new float *[channels];
Chris@0 808 bufferPtrCount = channels;
Chris@0 809 }
Chris@0 810
Chris@0 811 size_t generatorBlockSize = m_audioGenerator->getBlockSize();
Chris@0 812
Chris@0 813 if (resample && !m_converter) {
Chris@0 814 static bool warned = false;
Chris@0 815 if (!warned) {
Chris@0 816 std::cerr << "WARNING: sample rates differ, but no converter available!" << std::endl;
Chris@0 817 warned = true;
Chris@0 818 }
Chris@0 819 }
Chris@0 820
Chris@0 821 if (resample && m_converter) {
Chris@0 822
Chris@0 823 double ratio =
Chris@0 824 double(getTargetSampleRate()) / double(getSourceSampleRate());
Chris@0 825 orig = size_t(orig / ratio + 0.1);
Chris@0 826
Chris@0 827 // orig must be a multiple of generatorBlockSize
Chris@0 828 orig = (orig / generatorBlockSize) * generatorBlockSize;
Chris@0 829 if (orig == 0) return false;
Chris@0 830
Chris@0 831 size_t work = std::max(orig, space);
Chris@0 832
Chris@0 833 // We only allocate one buffer, but we use it in two halves.
Chris@0 834 // We place the non-interleaved values in the second half of
Chris@0 835 // the buffer (orig samples for channel 0, orig samples for
Chris@0 836 // channel 1 etc), and then interleave them into the first
Chris@0 837 // half of the buffer. Then we resample back into the second
Chris@0 838 // half (interleaved) and de-interleave the results back to
Chris@0 839 // the start of the buffer for insertion into the ringbuffers.
Chris@0 840 // What a faff -- especially as we've already de-interleaved
Chris@0 841 // the audio data from the source file elsewhere before we
Chris@0 842 // even reach this point.
Chris@0 843
Chris@0 844 if (tmpSize < channels * work * 2) {
Chris@0 845 delete[] tmp;
Chris@0 846 tmp = new float[channels * work * 2];
Chris@0 847 tmpSize = channels * work * 2;
Chris@0 848 }
Chris@0 849
Chris@0 850 float *nonintlv = tmp + channels * work;
Chris@0 851 float *intlv = tmp;
Chris@0 852 float *srcout = tmp + channels * work;
Chris@0 853
Chris@0 854 for (size_t c = 0; c < channels; ++c) {
Chris@0 855 for (size_t i = 0; i < orig; ++i) {
Chris@0 856 nonintlv[channels * i + c] = 0.0f;
Chris@0 857 }
Chris@0 858 }
Chris@0 859
Chris@0 860 for (size_t c = 0; c < channels; ++c) {
Chris@0 861 bufferPtrs[c] = nonintlv + c * orig;
Chris@0 862 }
Chris@0 863
Chris@0 864 got = mixModels(f, orig, bufferPtrs);
Chris@0 865
Chris@0 866 // and interleave into first half
Chris@0 867 for (size_t c = 0; c < channels; ++c) {
Chris@0 868 for (size_t i = 0; i < got; ++i) {
Chris@0 869 float sample = nonintlv[c * got + i];
Chris@0 870 intlv[channels * i + c] = sample;
Chris@0 871 }
Chris@0 872 }
Chris@0 873
Chris@0 874 SRC_DATA data;
Chris@0 875 data.data_in = intlv;
Chris@0 876 data.data_out = srcout;
Chris@0 877 data.input_frames = got;
Chris@0 878 data.output_frames = work;
Chris@0 879 data.src_ratio = ratio;
Chris@0 880 data.end_of_input = 0;
Chris@0 881
Chris@0 882 int err = src_process(m_converter, &data);
Chris@0 883 // size_t toCopy = size_t(work * ratio + 0.1);
Chris@0 884 size_t toCopy = size_t(got * ratio + 0.1);
Chris@0 885
Chris@0 886 if (err) {
Chris@0 887 std::cerr
Chris@0 888 << "AudioCallbackPlaySourceFillThread: ERROR in samplerate conversion: "
Chris@0 889 << src_strerror(err) << std::endl;
Chris@0 890 //!!! Then what?
Chris@0 891 } else {
Chris@0 892 got = data.input_frames_used;
Chris@0 893 toCopy = data.output_frames_gen;
Chris@0 894 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 895 std::cerr << "Resampled " << got << " frames to " << toCopy << " frames" << std::endl;
Chris@0 896 #endif
Chris@0 897 }
Chris@0 898
Chris@0 899 for (size_t c = 0; c < channels; ++c) {
Chris@0 900 for (size_t i = 0; i < toCopy; ++i) {
Chris@0 901 tmp[i] = srcout[channels * i + c];
Chris@0 902 }
Chris@0 903 RingBuffer<float> *wb = getWriteRingBuffer(c);
Chris@0 904 if (wb) wb->write(tmp, toCopy);
Chris@0 905 }
Chris@0 906
Chris@0 907 m_writeBufferFill = f;
Chris@0 908 if (readWriteEqual) m_readBufferFill = f;
Chris@0 909
Chris@0 910 } else {
Chris@0 911
Chris@0 912 // space must be a multiple of generatorBlockSize
Chris@0 913 space = (space / generatorBlockSize) * generatorBlockSize;
Chris@0 914 if (space == 0) return false;
Chris@0 915
Chris@0 916 if (tmpSize < channels * space) {
Chris@0 917 delete[] tmp;
Chris@0 918 tmp = new float[channels * space];
Chris@0 919 tmpSize = channels * space;
Chris@0 920 }
Chris@0 921
Chris@0 922 for (size_t c = 0; c < channels; ++c) {
Chris@0 923
Chris@0 924 bufferPtrs[c] = tmp + c * space;
Chris@0 925
Chris@0 926 for (size_t i = 0; i < space; ++i) {
Chris@0 927 tmp[c * space + i] = 0.0f;
Chris@0 928 }
Chris@0 929 }
Chris@0 930
Chris@0 931 size_t got = mixModels(f, space, bufferPtrs);
Chris@0 932
Chris@0 933 for (size_t c = 0; c < channels; ++c) {
Chris@0 934
Chris@0 935 RingBuffer<float> *wb = getWriteRingBuffer(c);
Chris@0 936 if (wb) wb->write(bufferPtrs[c], got);
Chris@0 937
Chris@0 938 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 939 if (wb)
Chris@0 940 std::cerr << "Wrote " << got << " frames for ch " << c << ", now "
Chris@0 941 << wb->getReadSpace() << " to read"
Chris@0 942 << std::endl;
Chris@0 943 #endif
Chris@0 944 }
Chris@0 945
Chris@0 946 m_writeBufferFill = f;
Chris@0 947 if (readWriteEqual) m_readBufferFill = f;
Chris@0 948
Chris@0 949 //!!! how do we know when ended? need to mark up a fully-buffered flag and check this if we find the buffers empty in getSourceSamples
Chris@0 950 }
Chris@0 951
Chris@0 952 return true;
Chris@0 953 }
Chris@0 954
Chris@0 955 size_t
Chris@0 956 AudioCallbackPlaySource::mixModels(size_t &frame, size_t count, float **buffers)
Chris@0 957 {
Chris@0 958 size_t processed = 0;
Chris@0 959 size_t chunkStart = frame;
Chris@0 960 size_t chunkSize = count;
Chris@0 961 size_t selectionSize = 0;
Chris@0 962 size_t nextChunkStart = chunkStart + chunkSize;
Chris@0 963
Chris@0 964 bool looping = m_viewManager->getPlayLoopMode();
Chris@0 965 bool constrained = (m_viewManager->getPlaySelectionMode() &&
Chris@0 966 !m_viewManager->getSelections().empty());
Chris@0 967
Chris@0 968 static float **chunkBufferPtrs = 0;
Chris@0 969 static size_t chunkBufferPtrCount = 0;
Chris@0 970 size_t channels = getTargetChannelCount();
Chris@0 971
Chris@0 972 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 973 std::cerr << "Selection playback: start " << frame << ", size " << count <<", channels " << channels << std::endl;
Chris@0 974 #endif
Chris@0 975
Chris@0 976 if (chunkBufferPtrCount < channels) {
Chris@0 977 if (chunkBufferPtrs) delete[] chunkBufferPtrs;
Chris@0 978 chunkBufferPtrs = new float *[channels];
Chris@0 979 chunkBufferPtrCount = channels;
Chris@0 980 }
Chris@0 981
Chris@0 982 for (size_t c = 0; c < channels; ++c) {
Chris@0 983 chunkBufferPtrs[c] = buffers[c];
Chris@0 984 }
Chris@0 985
Chris@0 986 while (processed < count) {
Chris@0 987
Chris@0 988 chunkSize = count - processed;
Chris@0 989 nextChunkStart = chunkStart + chunkSize;
Chris@0 990 selectionSize = 0;
Chris@0 991
Chris@0 992 size_t fadeIn = 0, fadeOut = 0;
Chris@0 993
Chris@0 994 if (constrained) {
Chris@0 995
Chris@0 996 Selection selection =
Chris@0 997 m_viewManager->getContainingSelection(chunkStart, true);
Chris@0 998
Chris@0 999 if (selection.isEmpty()) {
Chris@0 1000 if (looping) {
Chris@0 1001 selection = *m_viewManager->getSelections().begin();
Chris@0 1002 chunkStart = selection.getStartFrame();
Chris@0 1003 fadeIn = 50;
Chris@0 1004 }
Chris@0 1005 }
Chris@0 1006
Chris@0 1007 if (selection.isEmpty()) {
Chris@0 1008
Chris@0 1009 chunkSize = 0;
Chris@0 1010 nextChunkStart = chunkStart;
Chris@0 1011
Chris@0 1012 } else {
Chris@0 1013
Chris@0 1014 selectionSize =
Chris@0 1015 selection.getEndFrame() -
Chris@0 1016 selection.getStartFrame();
Chris@0 1017
Chris@0 1018 if (chunkStart < selection.getStartFrame()) {
Chris@0 1019 chunkStart = selection.getStartFrame();
Chris@0 1020 fadeIn = 50;
Chris@0 1021 }
Chris@0 1022
Chris@0 1023 nextChunkStart = chunkStart + chunkSize;
Chris@0 1024
Chris@0 1025 if (nextChunkStart >= selection.getEndFrame()) {
Chris@0 1026 nextChunkStart = selection.getEndFrame();
Chris@0 1027 fadeOut = 50;
Chris@0 1028 }
Chris@0 1029
Chris@0 1030 chunkSize = nextChunkStart - chunkStart;
Chris@0 1031 }
Chris@0 1032
Chris@0 1033 } else if (looping && m_lastModelEndFrame > 0) {
Chris@0 1034
Chris@0 1035 if (chunkStart >= m_lastModelEndFrame) {
Chris@0 1036 chunkStart = 0;
Chris@0 1037 }
Chris@0 1038 if (chunkSize > m_lastModelEndFrame - chunkStart) {
Chris@0 1039 chunkSize = m_lastModelEndFrame - chunkStart;
Chris@0 1040 }
Chris@0 1041 nextChunkStart = chunkStart + chunkSize;
Chris@0 1042 }
Chris@0 1043
Chris@0 1044 // std::cerr << "chunkStart " << chunkStart << ", chunkSize " << chunkSize << ", nextChunkStart " << nextChunkStart << ", frame " << frame << ", count " << count << ", processed " << processed << std::endl;
Chris@0 1045
Chris@0 1046 if (!chunkSize) {
Chris@0 1047 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 1048 std::cerr << "Ending selection playback at " << nextChunkStart << std::endl;
Chris@0 1049 #endif
Chris@0 1050 // We need to maintain full buffers so that the other
Chris@0 1051 // thread can tell where it's got to in the playback -- so
Chris@0 1052 // return the full amount here
Chris@0 1053 frame = frame + count;
Chris@0 1054 return count;
Chris@0 1055 }
Chris@0 1056
Chris@0 1057 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 1058 std::cerr << "Selection playback: chunk at " << chunkStart << " -> " << nextChunkStart << " (size " << chunkSize << ")" << std::endl;
Chris@0 1059 #endif
Chris@0 1060
Chris@0 1061 size_t got = 0;
Chris@0 1062
Chris@0 1063 if (selectionSize < 100) {
Chris@0 1064 fadeIn = 0;
Chris@0 1065 fadeOut = 0;
Chris@0 1066 } else if (selectionSize < 300) {
Chris@0 1067 if (fadeIn > 0) fadeIn = 10;
Chris@0 1068 if (fadeOut > 0) fadeOut = 10;
Chris@0 1069 }
Chris@0 1070
Chris@0 1071 if (fadeIn > 0) {
Chris@0 1072 if (processed * 2 < fadeIn) {
Chris@0 1073 fadeIn = processed * 2;
Chris@0 1074 }
Chris@0 1075 }
Chris@0 1076
Chris@0 1077 if (fadeOut > 0) {
Chris@0 1078 if ((count - processed - chunkSize) * 2 < fadeOut) {
Chris@0 1079 fadeOut = (count - processed - chunkSize) * 2;
Chris@0 1080 }
Chris@0 1081 }
Chris@0 1082
Chris@0 1083 for (std::set<Model *>::iterator mi = m_models.begin();
Chris@0 1084 mi != m_models.end(); ++mi) {
Chris@0 1085
Chris@0 1086 got = m_audioGenerator->mixModel(*mi, chunkStart,
Chris@0 1087 chunkSize, chunkBufferPtrs,
Chris@0 1088 fadeIn, fadeOut);
Chris@0 1089 }
Chris@0 1090
Chris@0 1091 for (size_t c = 0; c < channels; ++c) {
Chris@0 1092 chunkBufferPtrs[c] += chunkSize;
Chris@0 1093 }
Chris@0 1094
Chris@0 1095 processed += chunkSize;
Chris@0 1096 chunkStart = nextChunkStart;
Chris@0 1097 }
Chris@0 1098
Chris@0 1099 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 1100 std::cerr << "Returning selection playback " << processed << " frames to " << nextChunkStart << std::endl;
Chris@0 1101 #endif
Chris@0 1102
Chris@0 1103 frame = nextChunkStart;
Chris@0 1104 return processed;
Chris@0 1105 }
Chris@0 1106
Chris@0 1107 void
Chris@0 1108 AudioCallbackPlaySource::unifyRingBuffers()
Chris@0 1109 {
Chris@0 1110 if (m_readBuffers == m_writeBuffers) return;
Chris@0 1111
Chris@0 1112 // only unify if there will be something to read
Chris@0 1113 for (size_t c = 0; c < getTargetChannelCount(); ++c) {
Chris@0 1114 RingBuffer<float> *wb = getWriteRingBuffer(c);
Chris@0 1115 if (wb) {
Chris@0 1116 if (wb->getReadSpace() < m_blockSize * 2) {
Chris@0 1117 if ((m_writeBufferFill + m_blockSize * 2) <
Chris@0 1118 m_lastModelEndFrame) {
Chris@0 1119 // OK, we don't have enough and there's more to
Chris@0 1120 // read -- don't unify until we can do better
Chris@0 1121 return;
Chris@0 1122 }
Chris@0 1123 }
Chris@0 1124 break;
Chris@0 1125 }
Chris@0 1126 }
Chris@0 1127
Chris@0 1128 size_t rf = m_readBufferFill;
Chris@0 1129 RingBuffer<float> *rb = getReadRingBuffer(0);
Chris@0 1130 if (rb) {
Chris@0 1131 size_t rs = rb->getReadSpace();
Chris@0 1132 //!!! incorrect when in non-contiguous selection, see comments elsewhere
Chris@0 1133 // std::cerr << "rs = " << rs << std::endl;
Chris@0 1134 if (rs < rf) rf -= rs;
Chris@0 1135 else rf = 0;
Chris@0 1136 }
Chris@0 1137
Chris@0 1138 //std::cerr << "m_readBufferFill = " << m_readBufferFill << ", rf = " << rf << ", m_writeBufferFill = " << m_writeBufferFill << std::endl;
Chris@0 1139
Chris@0 1140 size_t wf = m_writeBufferFill;
Chris@0 1141 size_t skip = 0;
Chris@0 1142 for (size_t c = 0; c < getTargetChannelCount(); ++c) {
Chris@0 1143 RingBuffer<float> *wb = getWriteRingBuffer(c);
Chris@0 1144 if (wb) {
Chris@0 1145 if (c == 0) {
Chris@0 1146
Chris@0 1147 size_t wrs = wb->getReadSpace();
Chris@0 1148 // std::cerr << "wrs = " << wrs << std::endl;
Chris@0 1149
Chris@0 1150 if (wrs < wf) wf -= wrs;
Chris@0 1151 else wf = 0;
Chris@0 1152 // std::cerr << "wf = " << wf << std::endl;
Chris@0 1153
Chris@0 1154 if (wf < rf) skip = rf - wf;
Chris@0 1155 if (skip == 0) break;
Chris@0 1156 }
Chris@0 1157
Chris@0 1158 // std::cerr << "skipping " << skip << std::endl;
Chris@0 1159 wb->skip(skip);
Chris@0 1160 }
Chris@0 1161 }
Chris@0 1162
Chris@0 1163 m_bufferScavenger.claim(m_readBuffers);
Chris@0 1164 m_readBuffers = m_writeBuffers;
Chris@0 1165 m_readBufferFill = m_writeBufferFill;
Chris@0 1166 // std::cerr << "unified" << std::endl;
Chris@0 1167 }
Chris@0 1168
Chris@0 1169 void
Chris@0 1170 AudioCallbackPlaySource::AudioCallbackPlaySourceFillThread::run()
Chris@0 1171 {
Chris@0 1172 AudioCallbackPlaySource &s(m_source);
Chris@0 1173
Chris@0 1174 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 1175 std::cerr << "AudioCallbackPlaySourceFillThread starting" << std::endl;
Chris@0 1176 #endif
Chris@0 1177
Chris@0 1178 s.m_mutex.lock();
Chris@0 1179
Chris@0 1180 bool previouslyPlaying = s.m_playing;
Chris@0 1181 bool work = false;
Chris@0 1182
Chris@0 1183 while (!s.m_exiting) {
Chris@0 1184
Chris@0 1185 s.unifyRingBuffers();
Chris@0 1186 s.m_bufferScavenger.scavenge();
Chris@0 1187 s.m_timeStretcherScavenger.scavenge();
Chris@0 1188
Chris@0 1189 if (work && s.m_playing && s.getSourceSampleRate()) {
Chris@0 1190
Chris@0 1191 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 1192 std::cout << "AudioCallbackPlaySourceFillThread: not waiting" << std::endl;
Chris@0 1193 #endif
Chris@0 1194
Chris@0 1195 s.m_mutex.unlock();
Chris@0 1196 s.m_mutex.lock();
Chris@0 1197
Chris@0 1198 } else {
Chris@0 1199
Chris@0 1200 float ms = 100;
Chris@0 1201 if (s.getSourceSampleRate() > 0) {
Chris@0 1202 ms = float(m_ringBufferSize) / float(s.getSourceSampleRate()) * 1000.0;
Chris@0 1203 }
Chris@0 1204
Chris@0 1205 if (s.m_playing) ms /= 10;
Chris@0 1206
Chris@0 1207 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 1208 std::cout << "AudioCallbackPlaySourceFillThread: waiting for " << ms << "ms..." << std::endl;
Chris@0 1209 #endif
Chris@0 1210
Chris@0 1211 s.m_condition.wait(&s.m_mutex, size_t(ms));
Chris@0 1212 }
Chris@0 1213
Chris@0 1214 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 1215 std::cout << "AudioCallbackPlaySourceFillThread: awoken" << std::endl;
Chris@0 1216 #endif
Chris@0 1217
Chris@0 1218 work = false;
Chris@0 1219
Chris@0 1220 if (!s.getSourceSampleRate()) continue;
Chris@0 1221
Chris@0 1222 bool playing = s.m_playing;
Chris@0 1223
Chris@0 1224 if (playing && !previouslyPlaying) {
Chris@0 1225 #ifdef DEBUG_AUDIO_PLAY_SOURCE
Chris@0 1226 std::cout << "AudioCallbackPlaySourceFillThread: playback state changed, resetting" << std::endl;
Chris@0 1227 #endif
Chris@0 1228 for (size_t c = 0; c < s.getTargetChannelCount(); ++c) {
Chris@0 1229 RingBuffer<float> *rb = s.getReadRingBuffer(c);
Chris@0 1230 if (rb) rb->reset();
Chris@0 1231 }
Chris@0 1232 }
Chris@0 1233 previouslyPlaying = playing;
Chris@0 1234
Chris@0 1235 work = s.fillBuffers();
Chris@0 1236 }
Chris@0 1237
Chris@0 1238 s.m_mutex.unlock();
Chris@0 1239 }
Chris@0 1240
Chris@0 1241
Chris@0 1242
Chris@0 1243 #ifdef INCLUDE_MOCFILES
Chris@0 1244 #include "AudioCallbackPlaySource.moc.cpp"
Chris@0 1245 #endif
Chris@0 1246