Chris@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     Sonic Visualiser
Chris@0:     An audio file viewer and annotation editor.
Chris@0:     Centre for Digital Music, Queen Mary, University of London.
Chris@0:     This file copyright 2006 Chris Cannam.
Chris@0:     
Chris@0:     This program is free software; you can redistribute it and/or
Chris@0:     modify it under the terms of the GNU General Public License as
Chris@0:     published by the Free Software Foundation; either version 2 of the
Chris@0:     License, or (at your option) any later version.  See the file
Chris@0:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "AudioGenerator.h"
Chris@0: 
Chris@0: #include "base/TempDirectory.h"
Chris@0: #include "base/PlayParameters.h"
Chris@0: #include "base/PlayParameterRepository.h"
Chris@0: #include "base/Pitch.h"
Chris@0: #include "base/Exceptions.h"
Chris@0: 
Chris@1: #include "data/model/NoteModel.h"
Chris@1: #include "data/model/DenseTimeValueModel.h"
Chris@1: #include "data/model/SparseOneDimensionalModel.h"
Chris@0: 
Chris@0: #include "plugin/RealTimePluginFactory.h"
Chris@0: #include "plugin/RealTimePluginInstance.h"
Chris@0: #include "plugin/PluginIdentifier.h"
Chris@0: #include "plugin/PluginXml.h"
Chris@0: #include "plugin/api/alsa/seq_event.h"
Chris@0: 
Chris@0: #include <iostream>
Chris@0: #include <math.h>
Chris@0: 
Chris@0: #include <QDir>
Chris@0: #include <QFile>
Chris@0: 
Chris@0: const size_t
Chris@0: AudioGenerator::m_pluginBlockSize = 2048;
Chris@0: 
Chris@0: QString
Chris@0: AudioGenerator::m_sampleDir = "";
Chris@0: 
Chris@0: //#define DEBUG_AUDIO_GENERATOR 1
Chris@0: 
Chris@0: AudioGenerator::AudioGenerator() :
Chris@0:     m_sourceSampleRate(0),
Chris@180:     m_targetChannelCount(1),
Chris@180:     m_soloing(false)
Chris@0: {
Chris@0:     connect(PlayParameterRepository::getInstance(),
Chris@0:             SIGNAL(playPluginIdChanged(const Model *, QString)),
Chris@0:             this,
Chris@0:             SLOT(playPluginIdChanged(const Model *, QString)));
Chris@0: 
Chris@0:     connect(PlayParameterRepository::getInstance(),
Chris@0:             SIGNAL(playPluginConfigurationChanged(const Model *, QString)),
Chris@0:             this,
Chris@0:             SLOT(playPluginConfigurationChanged(const Model *, QString)));
Chris@0: }
Chris@0: 
Chris@0: AudioGenerator::~AudioGenerator()
Chris@0: {
Chris@0: }
Chris@0: 
Chris@0: bool
Chris@0: AudioGenerator::canPlay(const Model *model)
Chris@0: {
Chris@0:     if (dynamic_cast<const DenseTimeValueModel *>(model) ||
Chris@0: 	dynamic_cast<const SparseOneDimensionalModel *>(model) ||
Chris@0: 	dynamic_cast<const NoteModel *>(model)) {
Chris@0: 	return true;
Chris@0:     } else {
Chris@0: 	return false;
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: bool
Chris@0: AudioGenerator::addModel(Model *model)
Chris@0: {
Chris@0:     if (m_sourceSampleRate == 0) {
Chris@0: 
Chris@0: 	m_sourceSampleRate = model->getSampleRate();
Chris@0: 
Chris@0:     } else {
Chris@0: 
Chris@0: 	DenseTimeValueModel *dtvm =
Chris@0: 	    dynamic_cast<DenseTimeValueModel *>(model);
Chris@0: 
Chris@0: 	if (dtvm) {
Chris@0: 	    m_sourceSampleRate = model->getSampleRate();
Chris@0: 	    return true;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     RealTimePluginInstance *plugin = loadPluginFor(model);
Chris@0:     if (plugin) {
Chris@0:         QMutexLocker locker(&m_mutex);
Chris@0:         m_synthMap[model] = plugin;
Chris@0:         return true;
Chris@0:     }
Chris@0: 
Chris@0:     return false;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: AudioGenerator::playPluginIdChanged(const Model *model, QString)
Chris@0: {
Chris@0:     if (m_synthMap.find(model) == m_synthMap.end()) return;
Chris@0:     
Chris@0:     RealTimePluginInstance *plugin = loadPluginFor(model);
Chris@0:     if (plugin) {
Chris@0:         QMutexLocker locker(&m_mutex);
Chris@0:         delete m_synthMap[model];
Chris@0:         m_synthMap[model] = plugin;
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: AudioGenerator::playPluginConfigurationChanged(const Model *model,
Chris@0:                                                QString configurationXml)
Chris@0: {
Chris@0: //    std::cerr << "AudioGenerator::playPluginConfigurationChanged" << std::endl;
Chris@0: 
Chris@0:     if (m_synthMap.find(model) == m_synthMap.end()) {
Chris@0:         std::cerr << "AudioGenerator::playPluginConfigurationChanged: We don't know about this plugin" << std::endl;
Chris@0:         return;
Chris@0:     }
Chris@0: 
Chris@0:     RealTimePluginInstance *plugin = m_synthMap[model];
Chris@0:     if (plugin) {
Chris@0:         PluginXml(plugin).setParametersFromXml(configurationXml);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: AudioGenerator::getDefaultPlayPluginId(const Model *model)
Chris@0: {
Chris@0:     const SparseOneDimensionalModel *sodm =
Chris@0:         dynamic_cast<const SparseOneDimensionalModel *>(model);
Chris@0:     if (sodm) {
Chris@0:         return QString("dssi:%1:sample_player").
Chris@0:             arg(PluginIdentifier::BUILTIN_PLUGIN_SONAME);
Chris@0:     }
Chris@0: 
Chris@0:     const NoteModel *nm = dynamic_cast<const NoteModel *>(model);
Chris@0:     if (nm) {
Chris@0:         return QString("dssi:%1:sample_player").
Chris@0:             arg(PluginIdentifier::BUILTIN_PLUGIN_SONAME);
Chris@0:     }  
Chris@0:     
Chris@0:     return "";
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: AudioGenerator::getDefaultPlayPluginConfiguration(const Model *model)
Chris@0: {
Chris@0:     QString program = "";
Chris@0: 
Chris@0:     const SparseOneDimensionalModel *sodm =
Chris@0:         dynamic_cast<const SparseOneDimensionalModel *>(model);
Chris@0:     if (sodm) {
Chris@0:         program = "tap";
Chris@0:     }
Chris@0: 
Chris@0:     const NoteModel *nm = dynamic_cast<const NoteModel *>(model);
Chris@0:     if (nm) {
Chris@0:         program = "piano";
Chris@0:     }
Chris@0: 
Chris@0:     if (program == "") return "";
Chris@0: 
Chris@0:     return
Chris@0:         QString("<plugin configuration=\"%1\" program=\"%2\"/>")
Chris@0:         .arg(XmlExportable::encodeEntities
Chris@0:              (QString("sampledir=%1")
Chris@0:               .arg(PluginXml::encodeConfigurationChars(getSampleDir()))))
Chris@0:         .arg(XmlExportable::encodeEntities(program));
Chris@0: }    
Chris@0: 
Chris@0: QString
Chris@0: AudioGenerator::getSampleDir()
Chris@0: {
Chris@0:     if (m_sampleDir != "") return m_sampleDir;
Chris@0: 
Chris@0:     try {
Chris@0:         m_sampleDir = TempDirectory::getInstance()->getSubDirectoryPath("samples");
Chris@0:     } catch (DirectoryCreationFailed f) {
Chris@0:         std::cerr << "WARNING: AudioGenerator::getSampleDir: Failed to create "
Chris@0:                   << "temporary sample directory" << std::endl;
Chris@0:         m_sampleDir = "";
Chris@0:         return "";
Chris@0:     }
Chris@0: 
Chris@0:     QDir sampleResourceDir(":/samples", "*.wav");
Chris@0: 
Chris@0:     for (unsigned int i = 0; i < sampleResourceDir.count(); ++i) {
Chris@0: 
Chris@0:         QString fileName(sampleResourceDir[i]);
Chris@0:         QFile file(sampleResourceDir.filePath(fileName));
Chris@0: 
Chris@0:         if (!file.copy(QDir(m_sampleDir).filePath(fileName))) {
Chris@0:             std::cerr << "WARNING: AudioGenerator::getSampleDir: "
Chris@0:                       << "Unable to copy " << fileName.toStdString()
Chris@0:                       << " into temporary directory \""
Chris@0:                       << m_sampleDir.toStdString() << "\"" << std::endl;
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     return m_sampleDir;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: AudioGenerator::setSampleDir(RealTimePluginInstance *plugin)
Chris@0: {
Chris@0:     plugin->configure("sampledir", getSampleDir().toStdString());
Chris@0: } 
Chris@0: 
Chris@0: RealTimePluginInstance *
Chris@0: AudioGenerator::loadPluginFor(const Model *model)
Chris@0: {
Chris@0:     QString pluginId, configurationXml;
Chris@0: 
Chris@0:     PlayParameters *parameters =
Chris@0: 	PlayParameterRepository::getInstance()->getPlayParameters(model);
Chris@0:     if (parameters) {
Chris@0:         pluginId = parameters->getPlayPluginId();
Chris@0:         configurationXml = parameters->getPlayPluginConfiguration();
Chris@0:     }
Chris@0: 
Chris@0:     if (pluginId == "") {
Chris@0:         pluginId = getDefaultPlayPluginId(model);
Chris@0:         configurationXml = getDefaultPlayPluginConfiguration(model);
Chris@0:     }
Chris@0: 
Chris@0:     if (pluginId == "") return 0;
Chris@0: 
Chris@0:     RealTimePluginInstance *plugin = loadPlugin(pluginId, "");
Chris@0:     if (!plugin) return 0;
Chris@0: 
Chris@0:     if (configurationXml != "") {
Chris@0:         PluginXml(plugin).setParametersFromXml(configurationXml);
Chris@0:     }
Chris@0: 
Chris@0:     if (parameters) {
Chris@0:         parameters->setPlayPluginId(pluginId);
Chris@0:         parameters->setPlayPluginConfiguration(configurationXml);
Chris@0:     }
Chris@0: 
Chris@0:     return plugin;
Chris@0: }
Chris@0: 
Chris@0: RealTimePluginInstance *
Chris@0: AudioGenerator::loadPlugin(QString pluginId, QString program)
Chris@0: {
Chris@0:     RealTimePluginFactory *factory =
Chris@0: 	RealTimePluginFactory::instanceFor(pluginId);
Chris@0:     
Chris@0:     if (!factory) {
Chris@0: 	std::cerr << "Failed to get plugin factory" << std::endl;
Chris@0: 	return false;
Chris@0:     }
Chris@0: 	
Chris@0:     RealTimePluginInstance *instance =
Chris@0: 	factory->instantiatePlugin
Chris@0: 	(pluginId, 0, 0, m_sourceSampleRate, m_pluginBlockSize, m_targetChannelCount);
Chris@0: 
Chris@0:     if (!instance) {
Chris@0: 	std::cerr << "Failed to instantiate plugin " << pluginId.toStdString() << std::endl;
Chris@0:         return 0;
Chris@0:     }
Chris@0: 
Chris@0:     setSampleDir(instance);
Chris@0: 
Chris@0:     for (unsigned int i = 0; i < instance->getParameterCount(); ++i) {
Chris@0:         instance->setParameterValue(i, instance->getParameterDefault(i));
Chris@0:     }
Chris@0:     std::string defaultProgram = instance->getProgram(0, 0);
Chris@0:     if (defaultProgram != "") {
Chris@0: //        std::cerr << "first selecting default program " << defaultProgram << std::endl;
Chris@0:         instance->selectProgram(defaultProgram);
Chris@0:     }
Chris@0:     if (program != "") {
Chris@0: //        std::cerr << "now selecting desired program " << program.toStdString() << std::endl;
Chris@0:         instance->selectProgram(program.toStdString());
Chris@0:     }
Chris@0:     instance->setIdealChannelCount(m_targetChannelCount); // reset!
Chris@0: 
Chris@0:     return instance;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: AudioGenerator::removeModel(Model *model)
Chris@0: {
Chris@0:     SparseOneDimensionalModel *sodm =
Chris@0: 	dynamic_cast<SparseOneDimensionalModel *>(model);
Chris@0:     if (!sodm) return; // nothing to do
Chris@0: 
Chris@0:     QMutexLocker locker(&m_mutex);
Chris@0: 
Chris@0:     if (m_synthMap.find(sodm) == m_synthMap.end()) return;
Chris@0: 
Chris@0:     RealTimePluginInstance *instance = m_synthMap[sodm];
Chris@0:     m_synthMap.erase(sodm);
Chris@0:     delete instance;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: AudioGenerator::clearModels()
Chris@0: {
Chris@0:     QMutexLocker locker(&m_mutex);
Chris@0:     while (!m_synthMap.empty()) {
Chris@0: 	RealTimePluginInstance *instance = m_synthMap.begin()->second;
Chris@0: 	m_synthMap.erase(m_synthMap.begin());
Chris@0: 	delete instance;
Chris@0:     }
Chris@0: }    
Chris@0: 
Chris@0: void
Chris@0: AudioGenerator::reset()
Chris@0: {
Chris@0:     QMutexLocker locker(&m_mutex);
Chris@0:     for (PluginMap::iterator i = m_synthMap.begin(); i != m_synthMap.end(); ++i) {
Chris@0: 	if (i->second) {
Chris@0: 	    i->second->silence();
Chris@0: 	    i->second->discardEvents();
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     m_noteOffs.clear();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: AudioGenerator::setTargetChannelCount(size_t targetChannelCount)
Chris@0: {
Chris@0:     if (m_targetChannelCount == targetChannelCount) return;
Chris@0: 
Chris@0: //    std::cerr << "AudioGenerator::setTargetChannelCount(" << targetChannelCount << ")" << std::endl;
Chris@0: 
Chris@0:     QMutexLocker locker(&m_mutex);
Chris@0:     m_targetChannelCount = targetChannelCount;
Chris@0: 
Chris@0:     for (PluginMap::iterator i = m_synthMap.begin(); i != m_synthMap.end(); ++i) {
Chris@0: 	if (i->second) i->second->setIdealChannelCount(targetChannelCount);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: size_t
Chris@0: AudioGenerator::getBlockSize() const
Chris@0: {
Chris@0:     return m_pluginBlockSize;
Chris@0: }
Chris@0: 
Chris@180: void
Chris@180: AudioGenerator::setSoloModelSet(std::set<Model *> s)
Chris@180: {
Chris@180:     QMutexLocker locker(&m_mutex);
Chris@180: 
Chris@180:     m_soloModelSet = s;
Chris@180:     m_soloing = true;
Chris@180: }
Chris@180: 
Chris@180: void
Chris@180: AudioGenerator::clearSoloModelSet()
Chris@180: {
Chris@180:     QMutexLocker locker(&m_mutex);
Chris@180: 
Chris@180:     m_soloModelSet.clear();
Chris@180:     m_soloing = false;
Chris@180: }
Chris@180: 
Chris@0: size_t
Chris@0: AudioGenerator::mixModel(Model *model, size_t startFrame, size_t frameCount,
Chris@0: 			 float **buffer, size_t fadeIn, size_t fadeOut)
Chris@0: {
Chris@0:     if (m_sourceSampleRate == 0) {
Chris@0: 	std::cerr << "WARNING: AudioGenerator::mixModel: No base source sample rate available" << std::endl;
Chris@0: 	return frameCount;
Chris@0:     }
Chris@0: 
Chris@0:     QMutexLocker locker(&m_mutex);
Chris@0: 
Chris@0:     PlayParameters *parameters =
Chris@0: 	PlayParameterRepository::getInstance()->getPlayParameters(model);
Chris@0:     if (!parameters) return frameCount;
Chris@0: 
Chris@0:     bool playing = !parameters->isPlayMuted();
Chris@118:     if (!playing) {
Chris@118: #ifdef DEBUG_AUDIO_GENERATOR
Chris@118:         std::cout << "AudioGenerator::mixModel(" << model << "): muted" << std::endl;
Chris@118: #endif
Chris@118:         return frameCount;
Chris@118:     }
Chris@0: 
Chris@180:     if (m_soloing) {
Chris@180:         if (m_soloModelSet.find(model) == m_soloModelSet.end()) {
Chris@180: #ifdef DEBUG_AUDIO_GENERATOR
Chris@180:             std::cout << "AudioGenerator::mixModel(" << model << "): not one of the solo'd models" << std::endl;
Chris@180: #endif
Chris@180:             return frameCount;
Chris@180:         }
Chris@180:     }
Chris@180: 
Chris@0:     float gain = parameters->getPlayGain();
Chris@0:     float pan = parameters->getPlayPan();
Chris@0: 
Chris@0:     DenseTimeValueModel *dtvm = dynamic_cast<DenseTimeValueModel *>(model);
Chris@0:     if (dtvm) {
Chris@0: 	return mixDenseTimeValueModel(dtvm, startFrame, frameCount,
Chris@0: 				      buffer, gain, pan, fadeIn, fadeOut);
Chris@0:     }
Chris@0: 
Chris@0:     SparseOneDimensionalModel *sodm = dynamic_cast<SparseOneDimensionalModel *>
Chris@0: 	(model);
Chris@0:     if (sodm) {
Chris@0: 	return mixSparseOneDimensionalModel(sodm, startFrame, frameCount,
Chris@0: 					    buffer, gain, pan, fadeIn, fadeOut);
Chris@0:     }
Chris@0: 
Chris@0:     NoteModel *nm = dynamic_cast<NoteModel *>(model);
Chris@0:     if (nm) {
Chris@0: 	return mixNoteModel(nm, startFrame, frameCount,
Chris@0: 			    buffer, gain, pan, fadeIn, fadeOut);
Chris@0:     }
Chris@0: 
Chris@0:     return frameCount;
Chris@0: }
Chris@0: 
Chris@0: size_t
Chris@0: AudioGenerator::mixDenseTimeValueModel(DenseTimeValueModel *dtvm,
Chris@0: 				       size_t startFrame, size_t frames,
Chris@0: 				       float **buffer, float gain, float pan,
Chris@0: 				       size_t fadeIn, size_t fadeOut)
Chris@0: {
Chris@0:     static float *channelBuffer = 0;
Chris@0:     static size_t channelBufSiz = 0;
Chris@0: 
Chris@0:     size_t totalFrames = frames + fadeIn/2 + fadeOut/2;
Chris@0: 
Chris@0:     if (channelBufSiz < totalFrames) {
Chris@0: 	delete[] channelBuffer;
Chris@0: 	channelBuffer = new float[totalFrames];
Chris@0: 	channelBufSiz = totalFrames;
Chris@0:     }
Chris@0:     
Chris@0:     size_t got = 0;
Chris@0:     size_t prevChannel = 999;
Chris@0: 
Chris@0:     for (size_t c = 0; c < m_targetChannelCount; ++c) {
Chris@0: 
Chris@0: 	size_t sourceChannel = (c % dtvm->getChannelCount());
Chris@0: 
Chris@0: //	std::cerr << "mixing channel " << c << " from source channel " << sourceChannel << std::endl;
Chris@0: 
Chris@0: 	float channelGain = gain;
Chris@0: 	if (pan != 0.0) {
Chris@0: 	    if (c == 0) {
Chris@0: 		if (pan > 0.0) channelGain *= 1.0 - pan;
Chris@0: 	    } else {
Chris@0: 		if (pan < 0.0) channelGain *= pan + 1.0;
Chris@0: 	    }
Chris@0: 	}
Chris@0: 
Chris@0: 	if (prevChannel != sourceChannel) {
Chris@0: 	    if (startFrame >= fadeIn/2) {
Chris@184: 		got = dtvm->getData
Chris@0: 		    (sourceChannel,
Chris@184: 		     startFrame - fadeIn/2,
Chris@184:                      frames + fadeOut/2 + fadeIn/2,
Chris@0: 		     channelBuffer);
Chris@0: 	    } else {
Chris@0: 		size_t missing = fadeIn/2 - startFrame;
Chris@184: 		got = dtvm->getData
Chris@0: 		    (sourceChannel,
Chris@184: 		     startFrame,
Chris@184:                      frames + fadeOut/2,
Chris@0: 		     channelBuffer + missing);
Chris@0: 	    }	    
Chris@0: 	}
Chris@0: 	prevChannel = sourceChannel;
Chris@0: 
Chris@0: 	for (size_t i = 0; i < fadeIn/2; ++i) {
Chris@0: 	    float *back = buffer[c];
Chris@0: 	    back -= fadeIn/2;
Chris@0: 	    back[i] += (channelGain * channelBuffer[i] * i) / fadeIn;
Chris@0: 	}
Chris@0: 
Chris@0: 	for (size_t i = 0; i < frames + fadeOut/2; ++i) {
Chris@0: 	    float mult = channelGain;
Chris@0: 	    if (i < fadeIn/2) {
Chris@0: 		mult = (mult * i) / fadeIn;
Chris@0: 	    }
Chris@0: 	    if (i > frames - fadeOut/2) {
Chris@0: 		mult = (mult * ((frames + fadeOut/2) - i)) / fadeOut;
Chris@0: 	    }
Chris@0: 	    buffer[c][i] += mult * channelBuffer[i];
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     return got;
Chris@0: }
Chris@0:   
Chris@0: size_t
Chris@0: AudioGenerator::mixSparseOneDimensionalModel(SparseOneDimensionalModel *sodm,
Chris@0: 					     size_t startFrame, size_t frames,
Chris@0: 					     float **buffer, float gain, float pan,
Chris@0: 					     size_t /* fadeIn */,
Chris@0: 					     size_t /* fadeOut */)
Chris@0: {
Chris@0:     RealTimePluginInstance *plugin = m_synthMap[sodm];
Chris@0:     if (!plugin) return 0;
Chris@0: 
Chris@0:     size_t latency = plugin->getLatency();
Chris@0:     size_t blocks = frames / m_pluginBlockSize;
Chris@0:     
Chris@0:     //!!! hang on -- the fact that the audio callback play source's
Chris@0:     //buffer is a multiple of the plugin's buffer size doesn't mean
Chris@0:     //that we always get called for a multiple of it here (because it
Chris@0:     //also depends on the JACK block size).  how should we ensure that
Chris@0:     //all models write the same amount in to the mix, and that we
Chris@0:     //always have a multiple of the plugin buffer size?  I guess this
Chris@0:     //class has to be queryable for the plugin buffer size & the
Chris@0:     //callback play source has to use that as a multiple for all the
Chris@0:     //calls to mixModel
Chris@0: 
Chris@0:     size_t got = blocks * m_pluginBlockSize;
Chris@0: 
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0:     std::cout << "mixModel [sparse]: frames " << frames
Chris@0: 	      << ", blocks " << blocks << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0:     snd_seq_event_t onEv;
Chris@0:     onEv.type = SND_SEQ_EVENT_NOTEON;
Chris@0:     onEv.data.note.channel = 0;
Chris@0:     onEv.data.note.note = 64;
Chris@185:     onEv.data.note.velocity = 100;
Chris@0: 
Chris@0:     snd_seq_event_t offEv;
Chris@0:     offEv.type = SND_SEQ_EVENT_NOTEOFF;
Chris@0:     offEv.data.note.channel = 0;
Chris@0:     offEv.data.note.velocity = 0;
Chris@0:     
Chris@0:     NoteOffSet &noteOffs = m_noteOffs[sodm];
Chris@0: 
Chris@0:     for (size_t i = 0; i < blocks; ++i) {
Chris@0: 
Chris@0: 	size_t reqStart = startFrame + i * m_pluginBlockSize;
Chris@0: 
Chris@0: 	SparseOneDimensionalModel::PointList points =
Chris@0: 	    sodm->getPoints(reqStart + latency,
Chris@0: 			    reqStart + latency + m_pluginBlockSize);
Chris@0: 
Chris@0:         Vamp::RealTime blockTime = Vamp::RealTime::frame2RealTime
Chris@0: 	    (startFrame + i * m_pluginBlockSize, m_sourceSampleRate);
Chris@0: 
Chris@0: 	for (SparseOneDimensionalModel::PointList::iterator pli =
Chris@0: 		 points.begin(); pli != points.end(); ++pli) {
Chris@0: 
Chris@0: 	    size_t pliFrame = pli->frame;
Chris@0: 
Chris@0: 	    if (pliFrame >= latency) pliFrame -= latency;
Chris@0: 
Chris@0: 	    if (pliFrame < reqStart ||
Chris@0: 		pliFrame >= reqStart + m_pluginBlockSize) continue;
Chris@0: 
Chris@0: 	    while (noteOffs.begin() != noteOffs.end() &&
Chris@0: 		   noteOffs.begin()->frame <= pliFrame) {
Chris@0: 
Chris@0:                 Vamp::RealTime eventTime = Vamp::RealTime::frame2RealTime
Chris@0: 		    (noteOffs.begin()->frame, m_sourceSampleRate);
Chris@0: 
Chris@0: 		offEv.data.note.note = noteOffs.begin()->pitch;
Chris@0: 
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0: 		std::cerr << "mixModel [sparse]: sending note-off event at time " << eventTime << " frame " << noteOffs.begin()->frame << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 		plugin->sendEvent(eventTime, &offEv);
Chris@0: 		noteOffs.erase(noteOffs.begin());
Chris@0: 	    }
Chris@0: 
Chris@0:             Vamp::RealTime eventTime = Vamp::RealTime::frame2RealTime
Chris@0: 		(pliFrame, m_sourceSampleRate);
Chris@0: 	    
Chris@0: 	    plugin->sendEvent(eventTime, &onEv);
Chris@0: 
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0: 	    std::cout << "mixModel [sparse]: point at frame " << pliFrame << ", block start " << (startFrame + i * m_pluginBlockSize) << ", resulting time " << eventTime << std::endl;
Chris@0: #endif
Chris@0: 	    
Chris@0: 	    size_t duration = 7000; // frames [for now]
Chris@0: 	    NoteOff noff;
Chris@0: 	    noff.pitch = onEv.data.note.note;
Chris@0: 	    noff.frame = pliFrame + duration;
Chris@0: 	    noteOffs.insert(noff);
Chris@0: 	}
Chris@0: 
Chris@0: 	while (noteOffs.begin() != noteOffs.end() &&
Chris@0: 	       noteOffs.begin()->frame <=
Chris@0: 	       startFrame + i * m_pluginBlockSize + m_pluginBlockSize) {
Chris@0: 
Chris@0:             Vamp::RealTime eventTime = Vamp::RealTime::frame2RealTime
Chris@0: 		(noteOffs.begin()->frame, m_sourceSampleRate);
Chris@0: 
Chris@0: 	    offEv.data.note.note = noteOffs.begin()->pitch;
Chris@0: 
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0: 		std::cerr << "mixModel [sparse]: sending leftover note-off event at time " << eventTime << " frame " << noteOffs.begin()->frame << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 	    plugin->sendEvent(eventTime, &offEv);
Chris@0: 	    noteOffs.erase(noteOffs.begin());
Chris@0: 	}
Chris@0: 	
Chris@0: 	plugin->run(blockTime);
Chris@0: 	float **outs = plugin->getAudioOutputBuffers();
Chris@0: 
Chris@0: 	for (size_t c = 0; c < m_targetChannelCount; ++c) {
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0: 	    std::cout << "mixModel [sparse]: adding " << m_pluginBlockSize << " samples from plugin output " << c << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 	    size_t sourceChannel = (c % plugin->getAudioOutputCount());
Chris@0: 
Chris@0: 	    float channelGain = gain;
Chris@0: 	    if (pan != 0.0) {
Chris@0: 		if (c == 0) {
Chris@0: 		    if (pan > 0.0) channelGain *= 1.0 - pan;
Chris@0: 		} else {
Chris@0: 		    if (pan < 0.0) channelGain *= pan + 1.0;
Chris@0: 		}
Chris@0: 	    }
Chris@0: 
Chris@0: 	    for (size_t j = 0; j < m_pluginBlockSize; ++j) {
Chris@0: 		buffer[c][i * m_pluginBlockSize + j] +=
Chris@0: 		    channelGain * outs[sourceChannel][j];
Chris@0: 	    }
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     return got;
Chris@0: }
Chris@0: 
Chris@0:     
Chris@0: //!!! mucho duplication with above -- refactor
Chris@0: size_t
Chris@0: AudioGenerator::mixNoteModel(NoteModel *nm,
Chris@0: 			     size_t startFrame, size_t frames,
Chris@0: 			     float **buffer, float gain, float pan,
Chris@0: 			     size_t /* fadeIn */,
Chris@0: 			     size_t /* fadeOut */)
Chris@0: {
Chris@0:     RealTimePluginInstance *plugin = m_synthMap[nm];
Chris@0:     if (!plugin) return 0;
Chris@0: 
Chris@0:     size_t latency = plugin->getLatency();
Chris@0:     size_t blocks = frames / m_pluginBlockSize;
Chris@0:     
Chris@0:     //!!! hang on -- the fact that the audio callback play source's
Chris@0:     //buffer is a multiple of the plugin's buffer size doesn't mean
Chris@0:     //that we always get called for a multiple of it here (because it
Chris@0:     //also depends on the JACK block size).  how should we ensure that
Chris@0:     //all models write the same amount in to the mix, and that we
Chris@0:     //always have a multiple of the plugin buffer size?  I guess this
Chris@0:     //class has to be queryable for the plugin buffer size & the
Chris@0:     //callback play source has to use that as a multiple for all the
Chris@0:     //calls to mixModel
Chris@0: 
Chris@0:     size_t got = blocks * m_pluginBlockSize;
Chris@0: 
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0:     std::cout << "mixModel [note]: frames " << frames
Chris@0: 	      << ", blocks " << blocks << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0:     snd_seq_event_t onEv;
Chris@0:     onEv.type = SND_SEQ_EVENT_NOTEON;
Chris@0:     onEv.data.note.channel = 0;
Chris@0:     onEv.data.note.note = 64;
Chris@185:     onEv.data.note.velocity = 100;
Chris@0: 
Chris@0:     snd_seq_event_t offEv;
Chris@0:     offEv.type = SND_SEQ_EVENT_NOTEOFF;
Chris@0:     offEv.data.note.channel = 0;
Chris@0:     offEv.data.note.velocity = 0;
Chris@0:     
Chris@0:     NoteOffSet &noteOffs = m_noteOffs[nm];
Chris@0: 
Chris@0:     for (size_t i = 0; i < blocks; ++i) {
Chris@0: 
Chris@0: 	size_t reqStart = startFrame + i * m_pluginBlockSize;
Chris@0: 
Chris@0: 	NoteModel::PointList points =
Chris@0: 	    nm->getPoints(reqStart + latency,
Chris@0: 			    reqStart + latency + m_pluginBlockSize);
Chris@0: 
Chris@0:         Vamp::RealTime blockTime = Vamp::RealTime::frame2RealTime
Chris@0: 	    (startFrame + i * m_pluginBlockSize, m_sourceSampleRate);
Chris@0: 
Chris@0: 	for (NoteModel::PointList::iterator pli =
Chris@0: 		 points.begin(); pli != points.end(); ++pli) {
Chris@0: 
Chris@0: 	    size_t pliFrame = pli->frame;
Chris@0: 
Chris@0: 	    if (pliFrame >= latency) pliFrame -= latency;
Chris@0: 
Chris@0: 	    if (pliFrame < reqStart ||
Chris@0: 		pliFrame >= reqStart + m_pluginBlockSize) continue;
Chris@0: 
Chris@0: 	    while (noteOffs.begin() != noteOffs.end() &&
Chris@0: 		   noteOffs.begin()->frame <= pliFrame) {
Chris@0: 
Chris@0:                 Vamp::RealTime eventTime = Vamp::RealTime::frame2RealTime
Chris@0: 		    (noteOffs.begin()->frame, m_sourceSampleRate);
Chris@0: 
Chris@0: 		offEv.data.note.note = noteOffs.begin()->pitch;
Chris@0: 
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0: 		std::cerr << "mixModel [note]: sending note-off event at time " << eventTime << " frame " << noteOffs.begin()->frame << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 		plugin->sendEvent(eventTime, &offEv);
Chris@0: 		noteOffs.erase(noteOffs.begin());
Chris@0: 	    }
Chris@0: 
Chris@0:             Vamp::RealTime eventTime = Vamp::RealTime::frame2RealTime
Chris@0: 		(pliFrame, m_sourceSampleRate);
Chris@0: 	    
Chris@0:             if (nm->getScaleUnits() == "Hz") {
Chris@0:                 onEv.data.note.note = Pitch::getPitchForFrequency(pli->value);
Chris@0:             } else {
Chris@0:                 onEv.data.note.note = lrintf(pli->value);
Chris@0:             }
Chris@0: 
Chris@0: 	    plugin->sendEvent(eventTime, &onEv);
Chris@0: 
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0: 	    std::cout << "mixModel [note]: point at frame " << pliFrame << ", block start " << (startFrame + i * m_pluginBlockSize) << ", resulting time " << eventTime << std::endl;
Chris@0: #endif
Chris@0: 	    
Chris@0: 	    size_t duration = pli->duration;
Chris@0:             if (duration == 0 || duration == 1) {
Chris@0:                 duration = m_sourceSampleRate / 20;
Chris@0:             }
Chris@0: 	    NoteOff noff;
Chris@0: 	    noff.pitch = onEv.data.note.note;
Chris@0: 	    noff.frame = pliFrame + duration;
Chris@0: 	    noteOffs.insert(noff);
Chris@0: 	}
Chris@0: 
Chris@0: 	while (noteOffs.begin() != noteOffs.end() &&
Chris@0: 	       noteOffs.begin()->frame <=
Chris@0: 	       startFrame + i * m_pluginBlockSize + m_pluginBlockSize) {
Chris@0: 
Chris@0:             Vamp::RealTime eventTime = Vamp::RealTime::frame2RealTime
Chris@0: 		(noteOffs.begin()->frame, m_sourceSampleRate);
Chris@0: 
Chris@0: 	    offEv.data.note.note = noteOffs.begin()->pitch;
Chris@0: 
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0: 		std::cerr << "mixModel [note]: sending leftover note-off event at time " << eventTime << " frame " << noteOffs.begin()->frame << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 	    plugin->sendEvent(eventTime, &offEv);
Chris@0: 	    noteOffs.erase(noteOffs.begin());
Chris@0: 	}
Chris@0: 	
Chris@0: 	plugin->run(blockTime);
Chris@0: 	float **outs = plugin->getAudioOutputBuffers();
Chris@0: 
Chris@0: 	for (size_t c = 0; c < m_targetChannelCount; ++c) {
Chris@0: #ifdef DEBUG_AUDIO_GENERATOR
Chris@0: 	    std::cout << "mixModel [note]: adding " << m_pluginBlockSize << " samples from plugin output " << c << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 	    size_t sourceChannel = (c % plugin->getAudioOutputCount());
Chris@0: 
Chris@0: 	    float channelGain = gain;
Chris@0: 	    if (pan != 0.0) {
Chris@0: 		if (c == 0) {
Chris@0: 		    if (pan > 0.0) channelGain *= 1.0 - pan;
Chris@0: 		} else {
Chris@0: 		    if (pan < 0.0) channelGain *= pan + 1.0;
Chris@0: 		}
Chris@0: 	    }
Chris@0: 
Chris@0: 	    for (size_t j = 0; j < m_pluginBlockSize; ++j) {
Chris@0: 		buffer[c][i * m_pluginBlockSize + j] += 
Chris@0: 		    channelGain * outs[sourceChannel][j];
Chris@0: 	    }
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     return got;
Chris@0: }
Chris@0: