view plugin/FeatureExtractionPluginFactory.cpp @ 6:44bbf5793d84

* Rework handling of layer properties in file I/O -- we now get the individual
  layers to load and save them rather than doing it via generic property lists
  in the base class, so as to ensure we read and write meaningful values rather
  than generic int values requiring conversion.

/* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */

/*
    A waveform viewer and audio annotation editor.
    Chris Cannam, Queen Mary University of London, 2005-2006
    
    This is experimental software.  Not for distribution.
*/

#include "FeatureExtractionPluginFactory.h"
#include "PluginIdentifier.h"

#include "plugins/BeatDetect.h" //!!!
#include "plugins/ZeroCrossing.h" //!!!

#include <iostream>

static FeatureExtractionPluginFactory *_nativeInstance = 0;

FeatureExtractionPluginFactory *
FeatureExtractionPluginFactory::instance(QString pluginType)
{
    if (pluginType == "sv") {
	if (!_nativeInstance) {
	    std::cerr << "FeatureExtractionPluginFactory::instance(" << pluginType.toStdString()
		      << "): creating new FeatureExtractionPluginFactory" << std::endl;
	    _nativeInstance = new FeatureExtractionPluginFactory();
	}
	return _nativeInstance;
    }

    else return 0;
}

FeatureExtractionPluginFactory *
FeatureExtractionPluginFactory::instanceFor(QString identifier)
{
    QString type, soName, label;
    PluginIdentifier::parseIdentifier(identifier, type, soName, label);
    return instance(type);
}

std::vector<QString>
FeatureExtractionPluginFactory::getAllPluginIdentifiers()
{
    FeatureExtractionPluginFactory *factory;
    std::vector<QString> rv;
    
    factory = instance("sv");
    if (factory) {
	std::vector<QString> tmp = factory->getPluginIdentifiers();
	for (size_t i = 0; i < tmp.size(); ++i) {
	    rv.push_back(tmp[i]);
	}
    }

    // Plugins can change the locale, revert it to default.
    setlocale(LC_ALL, "C");
    return rv;
}

std::vector<QString>
FeatureExtractionPluginFactory::getPluginIdentifiers()
{
    std::vector<QString> rv;
    rv.push_back("sv:_builtin:beats"); //!!!
    rv.push_back("sv:_builtin:zerocrossing"); //!!!
    return rv;
}

FeatureExtractionPlugin *
FeatureExtractionPluginFactory::instantiatePlugin(QString identifier,
						  float inputSampleRate)
{
    QString type, soName, label;
    PluginIdentifier::parseIdentifier(identifier, type, soName, label);
    if (type != "sv") {
	std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Wrong factory for plugin type " << type.toStdString() << std::endl;
	return 0;
    }

    //!!!
    if (soName != PluginIdentifier::BUILTIN_PLUGIN_SONAME) {
	std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Non-built-in plugins not yet supported (paradoxically enough)" << std::endl;
	return 0;
    }

    if (label == "beats") {
	return new BeatDetector(inputSampleRate); //!!!
    }

    if (label == "zerocrossing") {
	return new ZeroCrossing(inputSampleRate); //!!!
    }

    std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Unknown plugin \"" << identifier.toStdString() << "\"" << std::endl;
    
    return 0;
}