Chris@43: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@43: 
Chris@43: /*
Chris@43:     Sonic Visualiser
Chris@43:     An audio file viewer and annotation editor.
Chris@43:     Centre for Digital Music, Queen Mary, University of London.
Chris@43:     This file copyright 2006 Chris Cannam.
Chris@43:     
Chris@43:     This program is free software; you can redistribute it and/or
Chris@43:     modify it under the terms of the GNU General Public License as
Chris@43:     published by the Free Software Foundation; either version 2 of the
Chris@43:     License, or (at your option) any later version.  See the file
Chris@43:     COPYING included with this distribution for more information.
Chris@43: */
Chris@43: 
Chris@43: #include "AudioGenerator.h"
Chris@43: 
Chris@43: #include "base/TempDirectory.h"
Chris@43: #include "base/PlayParameters.h"
Chris@43: #include "base/PlayParameterRepository.h"
Chris@43: #include "base/Pitch.h"
Chris@43: #include "base/Exceptions.h"
Chris@43: 
Chris@43: #include "data/model/NoteModel.h"
Chris@278: #include "data/model/FlexiNoteModel.h"
Chris@43: #include "data/model/DenseTimeValueModel.h"
Chris@43: #include "data/model/SparseOneDimensionalModel.h"
Chris@299: #include "data/model/NoteData.h"
Chris@43: 
Chris@307: #include "ClipMixer.h"
Chris@307: 
Chris@43: #include <iostream>
Chris@167: #include <cmath>
Chris@43: 
Chris@43: #include <QDir>
Chris@43: #include <QFile>
Chris@43: 
Chris@43: const size_t
Chris@305: AudioGenerator::m_processingBlockSize = 2048;
Chris@43: 
Chris@43: QString
Chris@43: AudioGenerator::m_sampleDir = "";
Chris@43: 
Chris@43: //#define DEBUG_AUDIO_GENERATOR 1
Chris@43: 
Chris@43: AudioGenerator::AudioGenerator() :
Chris@43:     m_sourceSampleRate(0),
Chris@43:     m_targetChannelCount(1),
Chris@43:     m_soloing(false)
Chris@43: {
Chris@108:     initialiseSampleDir();
Chris@43: 
Chris@43:     connect(PlayParameterRepository::getInstance(),
Chris@309:             SIGNAL(playClipIdChanged(const Playable *, QString)),
Chris@43:             this,
Chris@309:             SLOT(playClipIdChanged(const Playable *, QString)));
Chris@43: }
Chris@43: 
Chris@43: AudioGenerator::~AudioGenerator()
Chris@43: {
Chris@177: #ifdef DEBUG_AUDIO_GENERATOR
Chris@233:     SVDEBUG << "AudioGenerator::~AudioGenerator" << endl;
Chris@177: #endif
Chris@43: }
Chris@43: 
Chris@108: void
Chris@108: AudioGenerator::initialiseSampleDir()
Chris@43: {
Chris@108:     if (m_sampleDir != "") return;
Chris@108: 
Chris@108:     try {
Chris@108:         m_sampleDir = TempDirectory::getInstance()->getSubDirectoryPath("samples");
Chris@108:     } catch (DirectoryCreationFailed f) {
Chris@293:         cerr << "WARNING: AudioGenerator::initialiseSampleDir:"
Chris@108:                   << " Failed to create temporary sample directory"
Chris@293:                   << endl;
Chris@108:         m_sampleDir = "";
Chris@108:         return;
Chris@108:     }
Chris@108: 
Chris@108:     QDir sampleResourceDir(":/samples", "*.wav");
Chris@108: 
Chris@108:     for (unsigned int i = 0; i < sampleResourceDir.count(); ++i) {
Chris@108: 
Chris@108:         QString fileName(sampleResourceDir[i]);
Chris@108:         QFile file(sampleResourceDir.filePath(fileName));
Chris@151:         QString target = QDir(m_sampleDir).filePath(fileName);
Chris@108: 
Chris@151:         if (!file.copy(target)) {
Chris@293:             cerr << "WARNING: AudioGenerator::getSampleDir: "
Chris@294:                       << "Unable to copy " << fileName
Chris@108:                       << " into temporary directory \""
Chris@293:                       << m_sampleDir << "\"" << endl;
Chris@151:         } else {
Chris@151:             QFile tf(target);
Chris@151:             tf.setPermissions(tf.permissions() |
Chris@151:                               QFile::WriteOwner |
Chris@151:                               QFile::WriteUser);
Chris@108:         }
Chris@43:     }
Chris@43: }
Chris@43: 
Chris@43: bool
Chris@43: AudioGenerator::addModel(Model *model)
Chris@43: {
Chris@43:     if (m_sourceSampleRate == 0) {
Chris@43: 
Chris@43: 	m_sourceSampleRate = model->getSampleRate();
Chris@43: 
Chris@43:     } else {
Chris@43: 
Chris@43: 	DenseTimeValueModel *dtvm =
Chris@43: 	    dynamic_cast<DenseTimeValueModel *>(model);
Chris@43: 
Chris@43: 	if (dtvm) {
Chris@43: 	    m_sourceSampleRate = model->getSampleRate();
Chris@43: 	    return true;
Chris@43: 	}
Chris@43:     }
Chris@307: 
Chris@307:     ClipMixer *mixer = makeClipMixerFor(model);
Chris@307:     if (mixer) {
Chris@43:         QMutexLocker locker(&m_mutex);
Chris@307:         m_clipMixerMap[model] = mixer;
Chris@43:         return true;
Chris@43:     }
Chris@307: 
Chris@43:     return false;
Chris@43: }
Chris@43: 
Chris@43: void
Chris@309: AudioGenerator::playClipIdChanged(const Playable *playable, QString)
Chris@43: {
Chris@108:     const Model *model = dynamic_cast<const Model *>(playable);
Chris@108:     if (!model) {
Chris@309:         cerr << "WARNING: AudioGenerator::playClipIdChanged: playable "
Chris@108:                   << playable << " is not a supported model type"
Chris@293:                   << endl;
Chris@108:         return;
Chris@108:     }
Chris@108: 
Chris@307:     if (m_clipMixerMap.find(model) == m_clipMixerMap.end()) return;
Chris@307: 
Chris@307:     ClipMixer *mixer = makeClipMixerFor(model);
Chris@307:     if (mixer) {
Chris@43:         QMutexLocker locker(&m_mutex);
Chris@307:         m_clipMixerMap[model] = mixer;
Chris@43:     }
Chris@43: }
Chris@308: 
Chris@305: /*!!!
Chris@43: void
Chris@108: AudioGenerator::playPluginConfigurationChanged(const Playable *playable,
Chris@43:                                                QString configurationXml)
Chris@43: {
Chris@233: //    SVDEBUG << "AudioGenerator::playPluginConfigurationChanged" << endl;
Chris@43: 
Chris@108:     const Model *model = dynamic_cast<const Model *>(playable);
Chris@108:     if (!model) {
Chris@309:         cerr << "WARNING: AudioGenerator::playClipIdChanged: playable "
Chris@108:                   << playable << " is not a supported model type"
Chris@293:                   << endl;
Chris@108:         return;
Chris@108:     }
Chris@108: 
Chris@43:     if (m_synthMap.find(model) == m_synthMap.end()) {
Chris@233:         SVDEBUG << "AudioGenerator::playPluginConfigurationChanged: We don't know about this plugin" << endl;
Chris@43:         return;
Chris@43:     }
Chris@43: 
Chris@43:     RealTimePluginInstance *plugin = m_synthMap[model];
Chris@43:     if (plugin) {
Chris@43:         PluginXml(plugin).setParametersFromXml(configurationXml);
Chris@43:     }
Chris@43: }
Chris@43: 
Chris@43: void
Chris@43: AudioGenerator::setSampleDir(RealTimePluginInstance *plugin)
Chris@43: {
Chris@108:     if (m_sampleDir != "") {
Chris@108:         plugin->configure("sampledir", m_sampleDir.toStdString());
Chris@108:     }
Chris@43: } 
Chris@307: */
Chris@307: ClipMixer *
Chris@307: AudioGenerator::makeClipMixerFor(const Model *model)
Chris@43: {
Chris@309:     QString clipId;
Chris@43: 
Chris@108:     const Playable *playable = model;
Chris@108:     if (!playable || !playable->canPlay()) return 0;
Chris@108: 
Chris@43:     PlayParameters *parameters =
Chris@108: 	PlayParameterRepository::getInstance()->getPlayParameters(playable);
Chris@43:     if (parameters) {
Chris@309:         clipId = parameters->getPlayClipId();
Chris@43:     }
Chris@43: 
Chris@309:     std::cerr << "AudioGenerator::makeClipMixerFor(" << model << "): sample id = " << clipId << std::endl;
Chris@276: 
Chris@309:     if (clipId == "") {
Chris@308:         SVDEBUG << "AudioGenerator::makeClipMixerFor(" << model << "): no sample, skipping" << endl;
Chris@276:         return 0;
Chris@276:     }
Chris@43: 
Chris@308:     ClipMixer *mixer = new ClipMixer(m_targetChannelCount,
Chris@308:                                      m_sourceSampleRate,
Chris@308:                                      m_processingBlockSize);
Chris@307: 
Chris@308:     float clipF0 = Pitch::getFrequencyForPitch(60, 0, 440.0f); // required
Chris@307: 
Chris@309:     QString clipPath = QString("%1/%2.wav").arg(m_sampleDir).arg(clipId);
Chris@307: 
Chris@308:     if (!mixer->loadClipData(clipPath, clipF0)) {
Chris@308:         delete mixer;
Chris@43:         return 0;
Chris@43:     }
Chris@43: 
Chris@309:     std::cerr << "AudioGenerator::makeClipMixerFor(" << model << "): loaded clip " << clipId << std::endl;
Chris@43: 
Chris@308:     return mixer;
Chris@308: }
Chris@43: 
Chris@43: void
Chris@43: AudioGenerator::removeModel(Model *model)
Chris@43: {
Chris@43:     SparseOneDimensionalModel *sodm =
Chris@43: 	dynamic_cast<SparseOneDimensionalModel *>(model);
Chris@43:     if (!sodm) return; // nothing to do
Chris@43: 
Chris@43:     QMutexLocker locker(&m_mutex);
Chris@43: 
Chris@308:     if (m_clipMixerMap.find(sodm) == m_clipMixerMap.end()) return;
Chris@43: 
Chris@308:     ClipMixer *mixer = m_clipMixerMap[sodm];
Chris@308:     m_clipMixerMap.erase(sodm);
Chris@308:     delete mixer;
Chris@43: }
Chris@43: 
Chris@43: void
Chris@43: AudioGenerator::clearModels()
Chris@43: {
Chris@43:     QMutexLocker locker(&m_mutex);
Chris@308: 
Chris@308:     while (!m_clipMixerMap.empty()) {
Chris@308:         ClipMixer *mixer = m_clipMixerMap.begin()->second;
Chris@308: 	m_clipMixerMap.erase(m_clipMixerMap.begin());
Chris@308: 	delete mixer;
Chris@43:     }
Chris@43: }    
Chris@43: 
Chris@43: void
Chris@43: AudioGenerator::reset()
Chris@43: {
Chris@43:     QMutexLocker locker(&m_mutex);
Chris@308: 
Chris@308:     for (ClipMixerMap::iterator i = m_clipMixerMap.begin(); i != m_clipMixerMap.end(); ++i) {
Chris@43: 	if (i->second) {
Chris@308: 	    i->second->reset();
Chris@43: 	}
Chris@43:     }
Chris@43: 
Chris@43:     m_noteOffs.clear();
Chris@43: }
Chris@43: 
Chris@43: void
Chris@43: AudioGenerator::setTargetChannelCount(size_t targetChannelCount)
Chris@43: {
Chris@43:     if (m_targetChannelCount == targetChannelCount) return;
Chris@43: 
Chris@233: //    SVDEBUG << "AudioGenerator::setTargetChannelCount(" << targetChannelCount << ")" << endl;
Chris@43: 
Chris@43:     QMutexLocker locker(&m_mutex);
Chris@43:     m_targetChannelCount = targetChannelCount;
Chris@43: 
Chris@308:     for (ClipMixerMap::iterator i = m_clipMixerMap.begin(); i != m_clipMixerMap.end(); ++i) {
Chris@308: 	if (i->second) i->second->setChannelCount(targetChannelCount);
Chris@43:     }
Chris@43: }
Chris@43: 
Chris@43: size_t
Chris@43: AudioGenerator::getBlockSize() const
Chris@43: {
Chris@305:     return m_processingBlockSize;
Chris@43: }
Chris@43: 
Chris@43: void
Chris@43: AudioGenerator::setSoloModelSet(std::set<Model *> s)
Chris@43: {
Chris@43:     QMutexLocker locker(&m_mutex);
Chris@43: 
Chris@43:     m_soloModelSet = s;
Chris@43:     m_soloing = true;
Chris@43: }
Chris@43: 
Chris@43: void
Chris@43: AudioGenerator::clearSoloModelSet()
Chris@43: {
Chris@43:     QMutexLocker locker(&m_mutex);
Chris@43: 
Chris@43:     m_soloModelSet.clear();
Chris@43:     m_soloing = false;
Chris@43: }
Chris@43: 
Chris@43: size_t
Chris@43: AudioGenerator::mixModel(Model *model, size_t startFrame, size_t frameCount,
Chris@43: 			 float **buffer, size_t fadeIn, size_t fadeOut)
Chris@43: {
Chris@43:     if (m_sourceSampleRate == 0) {
Chris@293: 	cerr << "WARNING: AudioGenerator::mixModel: No base source sample rate available" << endl;
Chris@43: 	return frameCount;
Chris@43:     }
Chris@43: 
Chris@43:     QMutexLocker locker(&m_mutex);
Chris@43: 
Chris@108:     Playable *playable = model;
Chris@108:     if (!playable || !playable->canPlay()) return frameCount;
Chris@108: 
Chris@43:     PlayParameters *parameters =
Chris@108: 	PlayParameterRepository::getInstance()->getPlayParameters(playable);
Chris@43:     if (!parameters) return frameCount;
Chris@43: 
Chris@43:     bool playing = !parameters->isPlayMuted();
Chris@43:     if (!playing) {
Chris@43: #ifdef DEBUG_AUDIO_GENERATOR
Chris@293:         cout << "AudioGenerator::mixModel(" << model << "): muted" << endl;
Chris@43: #endif
Chris@43:         return frameCount;
Chris@43:     }
Chris@43: 
Chris@43:     if (m_soloing) {
Chris@43:         if (m_soloModelSet.find(model) == m_soloModelSet.end()) {
Chris@43: #ifdef DEBUG_AUDIO_GENERATOR
Chris@293:             cout << "AudioGenerator::mixModel(" << model << "): not one of the solo'd models" << endl;
Chris@43: #endif
Chris@43:             return frameCount;
Chris@43:         }
Chris@43:     }
Chris@43: 
Chris@43:     float gain = parameters->getPlayGain();
Chris@43:     float pan = parameters->getPlayPan();
Chris@43: 
Chris@43:     DenseTimeValueModel *dtvm = dynamic_cast<DenseTimeValueModel *>(model);
Chris@43:     if (dtvm) {
Chris@43: 	return mixDenseTimeValueModel(dtvm, startFrame, frameCount,
Chris@43: 				      buffer, gain, pan, fadeIn, fadeOut);
Chris@43:     }
Chris@43: 
Chris@279:     bool synthetic = 
Chris@279:         (qobject_cast<SparseOneDimensionalModel *>(model) ||
Chris@278:          qobject_cast<NoteModel *>(model) ||
Chris@278:          qobject_cast<FlexiNoteModel *>(model));
Chris@43: 
Chris@279:     if (synthetic) {
Chris@275:         return mixSyntheticNoteModel(model, startFrame, frameCount,
Chris@275:                                      buffer, gain, pan, fadeIn, fadeOut);
Chris@43:     }
Chris@43: 
Chris@276:     std::cerr << "AudioGenerator::mixModel: WARNING: Model " << model << " of type " << model->getTypeName() << " is marked as playable, but I have no mechanism to play it" << std::endl;
Chris@276: 
Chris@43:     return frameCount;
Chris@43: }
Chris@43: 
Chris@43: size_t
Chris@43: AudioGenerator::mixDenseTimeValueModel(DenseTimeValueModel *dtvm,
Chris@43: 				       size_t startFrame, size_t frames,
Chris@43: 				       float **buffer, float gain, float pan,
Chris@43: 				       size_t fadeIn, size_t fadeOut)
Chris@43: {
Chris@80:     static float **channelBuffer = 0;
Chris@80:     static size_t  channelBufSiz = 0;
Chris@80:     static size_t  channelBufCount = 0;
Chris@43: 
Chris@43:     size_t totalFrames = frames + fadeIn/2 + fadeOut/2;
Chris@43: 
Chris@80:     size_t modelChannels = dtvm->getChannelCount();
Chris@80: 
Chris@80:     if (channelBufSiz < totalFrames || channelBufCount < modelChannels) {
Chris@80: 
Chris@80:         for (size_t c = 0; c < channelBufCount; ++c) {
Chris@80:             delete[] channelBuffer[c];
Chris@80:         }
Chris@80: 
Chris@43: 	delete[] channelBuffer;
Chris@80:         channelBuffer = new float *[modelChannels];
Chris@80: 
Chris@80:         for (size_t c = 0; c < modelChannels; ++c) {
Chris@80:             channelBuffer[c] = new float[totalFrames];
Chris@80:         }
Chris@80: 
Chris@80:         channelBufCount = modelChannels;
Chris@43: 	channelBufSiz = totalFrames;
Chris@43:     }
Chris@80: 
Chris@43:     size_t got = 0;
Chris@80: 
Chris@80:     if (startFrame >= fadeIn/2) {
Chris@80:         got = dtvm->getData(0, modelChannels - 1,
Chris@80:                             startFrame - fadeIn/2,
Chris@80:                             frames + fadeOut/2 + fadeIn/2,
Chris@80:                             channelBuffer);
Chris@80:     } else {
Chris@80:         size_t missing = fadeIn/2 - startFrame;
Chris@80: 
Chris@80:         for (size_t c = 0; c < modelChannels; ++c) {
Chris@80:             channelBuffer[c] += missing;
Chris@80:         }
Chris@80: 
Chris@80:         got = dtvm->getData(0, modelChannels - 1,
Chris@80:                             startFrame,
Chris@80:                             frames + fadeOut/2,
Chris@80:                             channelBuffer);
Chris@80: 
Chris@80:         for (size_t c = 0; c < modelChannels; ++c) {
Chris@80:             channelBuffer[c] -= missing;
Chris@80:         }
Chris@80: 
Chris@80:         got += missing;
Chris@80:     }	    
Chris@43: 
Chris@43:     for (size_t c = 0; c < m_targetChannelCount; ++c) {
Chris@43: 
Chris@80: 	size_t sourceChannel = (c % modelChannels);
Chris@43: 
Chris@233: //	SVDEBUG << "mixing channel " << c << " from source channel " << sourceChannel << endl;
Chris@43: 
Chris@43: 	float channelGain = gain;
Chris@43: 	if (pan != 0.0) {
Chris@43: 	    if (c == 0) {
Chris@43: 		if (pan > 0.0) channelGain *= 1.0 - pan;
Chris@43: 	    } else {
Chris@43: 		if (pan < 0.0) channelGain *= pan + 1.0;
Chris@43: 	    }
Chris@43: 	}
Chris@43: 
Chris@43: 	for (size_t i = 0; i < fadeIn/2; ++i) {
Chris@43: 	    float *back = buffer[c];
Chris@43: 	    back -= fadeIn/2;
Chris@80: 	    back[i] += (channelGain * channelBuffer[sourceChannel][i] * i) / fadeIn;
Chris@43: 	}
Chris@43: 
Chris@43: 	for (size_t i = 0; i < frames + fadeOut/2; ++i) {
Chris@43: 	    float mult = channelGain;
Chris@43: 	    if (i < fadeIn/2) {
Chris@43: 		mult = (mult * i) / fadeIn;
Chris@43: 	    }
Chris@43: 	    if (i > frames - fadeOut/2) {
Chris@43: 		mult = (mult * ((frames + fadeOut/2) - i)) / fadeOut;
Chris@43: 	    }
Chris@80:             float val = channelBuffer[sourceChannel][i];
Chris@80:             if (i >= got) val = 0.f;
Chris@80: 	    buffer[c][i] += mult * val;
Chris@43: 	}
Chris@43:     }
Chris@43: 
Chris@43:     return got;
Chris@43: }
Chris@43:   
Chris@43: size_t
Chris@275: AudioGenerator::mixSyntheticNoteModel(Model *model,
Chris@275:                                       size_t startFrame, size_t frames,
Chris@275:                                       float **buffer, float gain, float pan,
Chris@275:                                       size_t /* fadeIn */,
Chris@275:                                       size_t /* fadeOut */)
Chris@43: {
Chris@308:     ClipMixer *clipMixer = m_clipMixerMap[model];
Chris@308:     if (!clipMixer) return 0;
Chris@43: 
Chris@305:     size_t blocks = frames / m_processingBlockSize;
Chris@43:     
Chris@43:     //!!! hang on -- the fact that the audio callback play source's
Chris@43:     //buffer is a multiple of the plugin's buffer size doesn't mean
Chris@43:     //that we always get called for a multiple of it here (because it
Chris@43:     //also depends on the JACK block size).  how should we ensure that
Chris@43:     //all models write the same amount in to the mix, and that we
Chris@43:     //always have a multiple of the plugin buffer size?  I guess this
Chris@43:     //class has to be queryable for the plugin buffer size & the
Chris@43:     //callback play source has to use that as a multiple for all the
Chris@43:     //calls to mixModel
Chris@43: 
Chris@305:     size_t got = blocks * m_processingBlockSize;
Chris@43: 
Chris@43: #ifdef DEBUG_AUDIO_GENERATOR
Chris@293:     cout << "mixModel [synthetic note]: frames " << frames
Chris@293: 	      << ", blocks " << blocks << endl;
Chris@43: #endif
Chris@43: 
Chris@308:     ClipMixer::NoteStart on;
Chris@308:     ClipMixer::NoteEnd off;
Chris@43: 
Chris@275:     NoteOffSet &noteOffs = m_noteOffs[model];
Chris@43: 
Chris@308:     float **bufferIndexes = new float *[m_targetChannelCount];
Chris@308: 
Chris@43:     for (size_t i = 0; i < blocks; ++i) {
Chris@43: 
Chris@305: 	size_t reqStart = startFrame + i * m_processingBlockSize;
Chris@43: 
Chris@299:         NoteList notes;
Chris@299:         NoteExportable *exportable = dynamic_cast<NoteExportable *>(model);
Chris@299:         if (exportable) {
Chris@308:             notes = exportable->getNotes(reqStart,
Chris@308:                                          reqStart + m_processingBlockSize);
Chris@299:         }
Chris@43: 
Chris@308:         std::vector<ClipMixer::NoteStart> starts;
Chris@308:         std::vector<ClipMixer::NoteEnd> ends;
Chris@43: 
Chris@275: 	for (NoteList::const_iterator ni = notes.begin();
Chris@275:              ni != notes.end(); ++ni) {
Chris@43: 
Chris@275: 	    size_t noteFrame = ni->start;
Chris@43: 
Chris@275: 	    if (noteFrame < reqStart ||
Chris@305: 		noteFrame >= reqStart + m_processingBlockSize) continue;
Chris@43: 
Chris@43: 	    while (noteOffs.begin() != noteOffs.end() &&
Chris@275: 		   noteOffs.begin()->frame <= noteFrame) {
Chris@43: 
Chris@308:                 size_t eventFrame = noteOffs.begin()->frame;
Chris@308:                 if (eventFrame < reqStart) eventFrame = reqStart;
Chris@43: 
Chris@308:                 off.frameOffset = eventFrame - reqStart;
Chris@308:                 off.frequency = noteOffs.begin()->frequency;
Chris@43: 
Chris@43: #ifdef DEBUG_AUDIO_GENERATOR
Chris@308: 		cerr << "mixModel [synthetic]: adding note-off at frame " << eventFrame << " frame offset " << off.frameOffset << " frequency " << off.frequency << endl;
Chris@43: #endif
Chris@43: 
Chris@308:                 ends.push_back(off);
Chris@43: 		noteOffs.erase(noteOffs.begin());
Chris@43: 	    }
Chris@43: 
Chris@308:             on.frameOffset = noteFrame - reqStart;
Chris@308:             on.frequency = ni->getFrequency();
Chris@308:             on.level = float(ni->velocity) / 127.0;
Chris@308:             on.pan = pan;
Chris@43: 
Chris@43: #ifdef DEBUG_AUDIO_GENERATOR
Chris@308: 	    cout << "mixModel [synthetic]: adding note at frame " << noteFrame << ", frame offset " << on.frameOffset << " frequency " << on.frequency << endl;
Chris@43: #endif
Chris@43: 	    
Chris@308:             starts.push_back(on);
Chris@275: 	    noteOffs.insert
Chris@308:                 (NoteOff(on.frequency, noteFrame + ni->duration));
Chris@43: 	}
Chris@43: 
Chris@43: 	while (noteOffs.begin() != noteOffs.end() &&
Chris@308: 	       noteOffs.begin()->frame <= reqStart + m_processingBlockSize) {
Chris@43: 
Chris@308:             size_t eventFrame = noteOffs.begin()->frame;
Chris@308:             if (eventFrame < reqStart) eventFrame = reqStart;
Chris@43: 
Chris@308:             off.frameOffset = eventFrame - reqStart;
Chris@308:             off.frequency = noteOffs.begin()->frequency;
Chris@43: 
Chris@43: #ifdef DEBUG_AUDIO_GENERATOR
Chris@308:             cerr << "mixModel [synthetic]: adding leftover note-off at frame " << eventFrame << " frame offset " << off.frameOffset << " frequency " << off.frequency << endl;
Chris@43: #endif
Chris@43: 
Chris@308:             ends.push_back(off);
Chris@308:             noteOffs.erase(noteOffs.begin());
Chris@43: 	}
Chris@43: 
Chris@43: 	for (size_t c = 0; c < m_targetChannelCount; ++c) {
Chris@308:             bufferIndexes[c] = buffer[c] + i * m_processingBlockSize;
Chris@308:         }
Chris@43: 
Chris@308:         clipMixer->mix(bufferIndexes, gain, starts, ends);
Chris@308:     }
Chris@43: 
Chris@308:     delete[] bufferIndexes;
Chris@43: 
Chris@43:     return got;
Chris@43: }