Chris@49: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     A waveform viewer and audio annotation editor.
Chris@2:     Chris Cannam, Queen Mary University of London, 2005-2006
Chris@0:    
Chris@0:     This is experimental software.  Not for distribution.
Chris@0: */
Chris@0: 
Chris@0: #include "TransformFactory.h"
Chris@0: 
Chris@0: #include "BeatDetectTransform.h"
Chris@0: #include "BeatDetectionFunctionTransform.h"
Chris@0: #include "FeatureExtractionPluginTransform.h"
Chris@0: 
Chris@0: #include "plugin/FeatureExtractionPluginFactory.h"
Chris@0: 
Chris@0: #include <iostream>
Chris@0: 
Chris@0: TransformFactory *
Chris@0: TransformFactory::m_instance = new TransformFactory;
Chris@0: 
Chris@0: TransformFactory *
Chris@0: TransformFactory::instance()
Chris@0: {
Chris@0:     return m_instance;
Chris@0: }
Chris@0: 
Chris@0: TransformFactory::~TransformFactory()
Chris@0: {
Chris@0: }
Chris@0: 
Chris@0: TransformFactory::TransformList
Chris@0: TransformFactory::getAllTransforms()
Chris@0: {
Chris@16:     if (m_transforms.empty()) populateTransforms();
Chris@16: 
Chris@0:     TransformList list;
Chris@16:     for (TransformMap::const_iterator i = m_transforms.begin();
Chris@16: 	 i != m_transforms.end(); ++i) {
Chris@16: 	list.push_back(TransformDesc(i->first, i->second));
Chris@16:     }
Chris@0: 
Chris@16:     return list;
Chris@16: }
Chris@16: 
Chris@16: void
Chris@16: TransformFactory::populateTransforms()
Chris@16: {
Chris@0:     std::vector<QString> fexplugs =
Chris@0: 	FeatureExtractionPluginFactory::getAllPluginIdentifiers();
Chris@0: 
Chris@47:     std::map<QString, QString> makers;
Chris@47: 
Chris@0:     for (size_t i = 0; i < fexplugs.size(); ++i) {
Chris@0: 
Chris@0: 	QString pluginId = fexplugs[i];
Chris@0: 
Chris@0: 	FeatureExtractionPluginFactory *factory =
Chris@0: 	    FeatureExtractionPluginFactory::instanceFor(pluginId);
Chris@0: 
Chris@20: 	if (!factory) {
Chris@20: 	    std::cerr << "WARNING: TransformFactory::populateTransforms: No feature extraction plugin factory for instance " << pluginId.toLocal8Bit().data() << std::endl;
Chris@20: 	    continue;
Chris@20: 	}
Chris@0: 
Chris@20: 	FeatureExtractionPlugin *plugin = 
Chris@20: 	    factory->instantiatePlugin(pluginId, 48000);
Chris@0: 
Chris@20: 	if (!plugin) {
Chris@20: 	    std::cerr << "WARNING: TransformFactory::populateTransforms: Failed to instantiate plugin " << pluginId.toLocal8Bit().data() << std::endl;
Chris@20: 	    continue;
Chris@20: 	}
Chris@20: 		
Chris@20: 	QString pluginDescription = plugin->getDescription().c_str();
Chris@20: 	FeatureExtractionPlugin::OutputList outputs =
Chris@20: 	    plugin->getOutputDescriptors();
Chris@0: 
Chris@20: 	for (size_t j = 0; j < outputs.size(); ++j) {
Chris@0: 
Chris@20: 	    QString transformName = QString("%1:%2")
Chris@20: 		    .arg(pluginId).arg(outputs[j].name.c_str());
Chris@20: 
Chris@20: 	    QString userDescription;
Chris@20: 
Chris@20: 	    if (outputs.size() == 1) {
Chris@20: 		userDescription = pluginDescription;
Chris@20: 	    } else {
Chris@20: 		userDescription = QString("%1: %2")
Chris@20: 		    .arg(pluginDescription)
Chris@20: 		    .arg(outputs[j].description.c_str());
Chris@0: 	    }
Chris@20: 
Chris@20: 	    m_transforms[transformName] = userDescription;
Chris@47: 	    
Chris@47: 	    makers[transformName] = plugin->getMaker().c_str();
Chris@0: 	}
Chris@0:     }
Chris@47: 
Chris@47:     // disambiguate plugins with similar descriptions
Chris@47: 
Chris@47:     std::map<QString, int> descriptions;
Chris@47: 
Chris@47:     for (TransformMap::iterator i = m_transforms.begin(); i != m_transforms.end();
Chris@47: 	 ++i) {
Chris@47: 
Chris@47: 	QString name = i->first, description = i->second;
Chris@47: 
Chris@47: 	++descriptions[description];
Chris@47: 	++descriptions[QString("%1 [%2]").arg(description).arg(makers[name])];
Chris@47:     }
Chris@47: 
Chris@47:     std::map<QString, int> counts;
Chris@47:     TransformMap newMap;
Chris@47: 
Chris@47:     for (TransformMap::iterator i = m_transforms.begin(); i != m_transforms.end();
Chris@47: 	 ++i) {
Chris@47: 
Chris@47: 	QString name = i->first, description = i->second;
Chris@47: 
Chris@47: 	if (descriptions[description] > 1) {
Chris@47: 	    description = QString("%1 [%2]").arg(description).arg(makers[name]);
Chris@47: 	    if (descriptions[description] > 1) {
Chris@47: 		description = QString("%1 <%2>")
Chris@47: 		    .arg(description).arg(++counts[description]);
Chris@47: 	    }
Chris@47: 	}
Chris@47: 
Chris@47: 	newMap[name] = description;
Chris@47:     }	    
Chris@47: 	    
Chris@47:     m_transforms = newMap;
Chris@16: }
Chris@16: 
Chris@16: QString
Chris@16: TransformFactory::getTransformDescription(TransformName name)
Chris@16: {
Chris@16:     if (m_transforms.find(name) != m_transforms.end()) {
Chris@16: 	return m_transforms[name];
Chris@16:     } else return "";
Chris@0: }
Chris@0: 
Chris@18: QString
Chris@18: TransformFactory::getTransformFriendlyName(TransformName name)
Chris@18: {
Chris@18:     QString description = getTransformDescription(name);
Chris@18: 
Chris@18:     int i = description.indexOf(':');
Chris@18:     if (i >= 0) {
Chris@18: 	return description.remove(0, i + 2);
Chris@18:     } else {
Chris@18: 	return description;
Chris@18:     }
Chris@18: }
Chris@18: 
Chris@0: Transform *
Chris@0: TransformFactory::createTransform(TransformName name, Model *inputModel)
Chris@0: {
Chris@0:     return createTransform(name, inputModel, true);
Chris@0: }
Chris@0: 
Chris@0: Transform *
Chris@0: TransformFactory::createTransform(TransformName name, Model *inputModel,
Chris@0: 				  bool start)
Chris@0: {
Chris@0:     Transform *transform = 0;
Chris@0: 
Chris@0:     if (name == BeatDetectTransform::getName()) {
Chris@0: 	transform = new BeatDetectTransform(inputModel);
Chris@0:     } else if (name == BeatDetectionFunctionTransform::getName()) {
Chris@0: 	transform = new BeatDetectionFunctionTransform(inputModel);
Chris@0:     } else {
Chris@0: 	QString id = name.section(':', 0, 2);
Chris@0: 	QString output = name.section(':', 3);
Chris@0: 	if (FeatureExtractionPluginFactory::instanceFor(id)) {
Chris@0: 	    transform = new FeatureExtractionPluginTransform(inputModel,
Chris@0: 							     id, output);
Chris@0: 	} else {
Chris@0: 	    std::cerr << "TransformFactory::createTransform: Unknown transform "
Chris@0: 		      << name.toStdString() << std::endl;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     if (start && transform) transform->start();
Chris@16:     transform->setObjectName(name);
Chris@0:     return transform;
Chris@0: }
Chris@0: 
Chris@0: Model *
Chris@0: TransformFactory::transform(TransformName name, Model *inputModel)
Chris@0: {
Chris@0:     Transform *t = createTransform(name, inputModel, false);
Chris@0: 
Chris@0:     if (!t) return 0;
Chris@0: 
Chris@0:     connect(t, SIGNAL(finished()), this, SLOT(transformFinished()));
Chris@0: 
Chris@0:     t->start();
Chris@0:     return t->detachOutputModel();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: TransformFactory::transformFinished()
Chris@0: {
Chris@0:     QObject *s = sender();
Chris@0:     Transform *transform = dynamic_cast<Transform *>(s);
Chris@0:     
Chris@0:     if (!transform) {
Chris@0: 	std::cerr << "WARNING: TransformFactory::transformFinished: sender is not a transform" << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     transform->wait(); // unnecessary but reassuring
Chris@0:     delete transform;
Chris@0: }
Chris@0: