Chris@49: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@52:     Sonic Visualiser
Chris@52:     An audio file viewer and annotation editor.
Chris@52:     Centre for Digital Music, Queen Mary, University of London.
Chris@202:     This file copyright 2006 Chris Cannam and QMUL.
Chris@0:     
Chris@52:     This program is free software; you can redistribute it and/or
Chris@52:     modify it under the terms of the GNU General Public License as
Chris@52:     published by the Free Software Foundation; either version 2 of the
Chris@52:     License, or (at your option) any later version.  See the file
Chris@52:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "FeatureExtractionPluginFactory.h"
Chris@0: #include "PluginIdentifier.h"
Chris@0: 
Chris@66: #include "vamp/vamp.h"
Chris@66: #include "vamp-sdk/PluginHostAdapter.h"
Chris@298: #include "vamp-sdk/hostext/PluginWrapper.h"
Chris@66: 
Chris@150: #include "system/System.h"
Chris@66: 
Chris@66: #include <QDir>
Chris@66: #include <QFile>
Chris@66: #include <QFileInfo>
Chris@165: #include <QTextStream>
Chris@66: 
Chris@0: #include <iostream>
Chris@0: 
Chris@249: //#define DEBUG_PLUGIN_SCAN_AND_INSTANTIATE 1
Chris@249: 
Chris@298: class PluginDeletionNotifyAdapter : public Vamp::HostExt::PluginWrapper {
Chris@298: public:
Chris@298:     PluginDeletionNotifyAdapter(Vamp::Plugin *plugin,
Chris@298:                                 FeatureExtractionPluginFactory *factory) :
Chris@298:         PluginWrapper(plugin), m_factory(factory) { }
Chris@298:     virtual ~PluginDeletionNotifyAdapter();
Chris@298: protected:
Chris@298:     FeatureExtractionPluginFactory *m_factory;
Chris@298: };
Chris@298: 
Chris@298: PluginDeletionNotifyAdapter::~PluginDeletionNotifyAdapter()
Chris@298: {
Chris@298:     // see notes in vamp-sdk/hostext/PluginLoader.cpp from which this is drawn
Chris@298:     Vamp::Plugin *p = m_plugin;
Chris@298:     delete m_plugin;
Chris@298:     m_plugin = 0;
Chris@298:     if (m_factory) m_factory->pluginDeleted(p);
Chris@298: }
Chris@298: 
Chris@0: static FeatureExtractionPluginFactory *_nativeInstance = 0;
Chris@0: 
Chris@0: FeatureExtractionPluginFactory *
Chris@0: FeatureExtractionPluginFactory::instance(QString pluginType)
Chris@0: {
Chris@71:     if (pluginType == "vamp") {
Chris@0: 	if (!_nativeInstance) {
Chris@259: //	    std::cerr << "FeatureExtractionPluginFactory::instance(" << pluginType.toStdString()
Chris@259: //		      << "): creating new FeatureExtractionPluginFactory" << std::endl;
Chris@0: 	    _nativeInstance = new FeatureExtractionPluginFactory();
Chris@0: 	}
Chris@0: 	return _nativeInstance;
Chris@0:     }
Chris@0: 
Chris@0:     else return 0;
Chris@0: }
Chris@0: 
Chris@0: FeatureExtractionPluginFactory *
Chris@0: FeatureExtractionPluginFactory::instanceFor(QString identifier)
Chris@0: {
Chris@0:     QString type, soName, label;
Chris@0:     PluginIdentifier::parseIdentifier(identifier, type, soName, label);
Chris@0:     return instance(type);
Chris@0: }
Chris@0: 
Chris@0: std::vector<QString>
Chris@66: FeatureExtractionPluginFactory::getPluginPath()
Chris@66: {
Chris@117:     if (!m_pluginPath.empty()) return m_pluginPath;
Chris@117: 
Chris@186:     std::vector<std::string> p = Vamp::PluginHostAdapter::getPluginPath();
Chris@186:     for (size_t i = 0; i < p.size(); ++i) m_pluginPath.push_back(p[i].c_str());
Chris@186:     return m_pluginPath;
Chris@66: }
Chris@66: 
Chris@66: std::vector<QString>
Chris@0: FeatureExtractionPluginFactory::getAllPluginIdentifiers()
Chris@0: {
Chris@0:     FeatureExtractionPluginFactory *factory;
Chris@0:     std::vector<QString> rv;
Chris@0:     
Chris@66:     factory = instance("vamp");
Chris@0:     if (factory) {
Chris@0: 	std::vector<QString> tmp = factory->getPluginIdentifiers();
Chris@0: 	for (size_t i = 0; i < tmp.size(); ++i) {
Chris@0: 	    rv.push_back(tmp[i]);
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     // Plugins can change the locale, revert it to default.
Chris@0:     setlocale(LC_ALL, "C");
Chris@0:     return rv;
Chris@0: }
Chris@0: 
Chris@0: std::vector<QString>
Chris@0: FeatureExtractionPluginFactory::getPluginIdentifiers()
Chris@0: {
Chris@0:     std::vector<QString> rv;
Chris@66:     std::vector<QString> path = getPluginPath();
Chris@66:     
Chris@66:     for (std::vector<QString>::iterator i = path.begin(); i != path.end(); ++i) {
Chris@66: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:         std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: scanning directory " << i->toStdString() << std::endl;
Chris@249: #endif
Chris@66: 
Chris@66: 	QDir pluginDir(*i, PLUGIN_GLOB,
Chris@66:                        QDir::Name | QDir::IgnoreCase,
Chris@66:                        QDir::Files | QDir::Readable);
Chris@66: 
Chris@66: 	for (unsigned int j = 0; j < pluginDir.count(); ++j) {
Chris@66: 
Chris@66:             QString soname = pluginDir.filePath(pluginDir[j]);
Chris@66: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:             std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: trying potential library " << soname.toStdString() << std::endl;
Chris@249: #endif
Chris@249: 
Chris@66:             void *libraryHandle = DLOPEN(soname, RTLD_LAZY);
Chris@66:             
Chris@66:             if (!libraryHandle) {
Chris@71:                 std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: Failed to load library " << soname.toStdString() << ": " << DLERROR() << std::endl;
Chris@66:                 continue;
Chris@66:             }
Chris@66: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:             std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: It's a library all right, checking for descriptor" << std::endl;
Chris@249: #endif
Chris@249: 
Chris@66:             VampGetPluginDescriptorFunction fn = (VampGetPluginDescriptorFunction)
Chris@66:                 DLSYM(libraryHandle, "vampGetPluginDescriptor");
Chris@66: 
Chris@66:             if (!fn) {
Chris@66:                 std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: No descriptor function in " << soname.toStdString() << std::endl;
Chris@66:                 if (DLCLOSE(libraryHandle) != 0) {
Chris@66:                     std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: Failed to unload library " << soname.toStdString() << std::endl;
Chris@66:                 }
Chris@66:                 continue;
Chris@66:             }
Chris@66: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:             std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: Vamp descriptor found" << std::endl;
Chris@249: #endif
Chris@249: 
Chris@66:             const VampPluginDescriptor *descriptor = 0;
Chris@66:             int index = 0;
Chris@66: 
Chris@251:             std::map<std::string, int> known;
Chris@251:             bool ok = true;
Chris@251: 
Chris@239:             while ((descriptor = fn(VAMP_API_VERSION, index))) {
Chris@251: 
Chris@251:                 if (known.find(descriptor->identifier) != known.end()) {
Chris@251:                     std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: Plugin library "
Chris@251:                               << soname.toStdString()
Chris@251:                               << " returns the same plugin identifier \""
Chris@251:                               << descriptor->identifier << "\" at indices "
Chris@251:                               << known[descriptor->identifier] << " and "
Chris@251:                               << index << std::endl;
Chris@251:                     std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: Avoiding this library (obsolete API?)" << std::endl;
Chris@251:                     ok = false;
Chris@251:                     break;
Chris@251:                 } else {
Chris@251:                     known[descriptor->identifier] = index;
Chris@251:                 }
Chris@251: 
Chris@251:                 ++index;
Chris@251:             }
Chris@251: 
Chris@251:             if (ok) {
Chris@251: 
Chris@251:                 index = 0;
Chris@251: 
Chris@251:                 while ((descriptor = fn(VAMP_API_VERSION, index))) {
Chris@251: 
Chris@251:                     QString id = PluginIdentifier::createIdentifier
Chris@251:                         ("vamp", soname, descriptor->identifier);
Chris@251:                     rv.push_back(id);
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@251:                     std::cerr << "FeatureExtractionPluginFactory::getPluginIdentifiers: Found plugin id " << id.toStdString() << " at index " << index << std::endl;
Chris@249: #endif
Chris@251:                     ++index;
Chris@251:                 }
Chris@66:             }
Chris@66:             
Chris@66:             if (DLCLOSE(libraryHandle) != 0) {
Chris@66:                 std::cerr << "WARNING: FeatureExtractionPluginFactory::getPluginIdentifiers: Failed to unload library " << soname.toStdString() << std::endl;
Chris@66:             }
Chris@66: 	}
Chris@66:     }
Chris@66: 
Chris@165:     generateTaxonomy();
Chris@165: 
Chris@0:     return rv;
Chris@0: }
Chris@0: 
Chris@66: QString
Chris@66: FeatureExtractionPluginFactory::findPluginFile(QString soname, QString inDir)
Chris@66: {
Chris@66:     QString file = "";
Chris@66: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:     std::cerr << "FeatureExtractionPluginFactory::findPluginFile(\""
Chris@249:               << soname.toStdString() << "\", \"" << inDir.toStdString() << "\")"
Chris@249:               << std::endl;
Chris@249: #endif
Chris@249: 
Chris@66:     if (inDir != "") {
Chris@66: 
Chris@66:         QDir dir(inDir, PLUGIN_GLOB,
Chris@66:                  QDir::Name | QDir::IgnoreCase,
Chris@66:                  QDir::Files | QDir::Readable);
Chris@66:         if (!dir.exists()) return "";
Chris@66: 
Chris@66:         file = dir.filePath(QFileInfo(soname).fileName());
Chris@249: 
Chris@249:         if (QFileInfo(file).exists() && QFileInfo(file).isFile()) {
Chris@249: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:             std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
Chris@249:                       << "found trivially at " << file.toStdString() << std::endl;
Chris@249: #endif
Chris@249: 
Chris@66:             return file;
Chris@66:         }
Chris@66: 
Chris@66: 	for (unsigned int j = 0; j < dir.count(); ++j) {
Chris@66:             file = dir.filePath(dir[j]);
Chris@66:             if (QFileInfo(file).baseName() == QFileInfo(soname).baseName()) {
Chris@249: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:                 std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
Chris@262:                           << "found \"" << soname.toStdString() << "\" at " << file.toStdString() << std::endl;
Chris@249: #endif
Chris@249: 
Chris@66:                 return file;
Chris@66:             }
Chris@66:         }
Chris@66: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:         std::cerr << "FeatureExtractionPluginFactory::findPluginFile (with dir): "
Chris@249:                   << "not found" << std::endl;
Chris@249: #endif
Chris@249: 
Chris@66:         return "";
Chris@66: 
Chris@66:     } else {
Chris@66: 
Chris@66:         QFileInfo fi(soname);
Chris@249: 
Chris@249:         if (fi.isAbsolute() && fi.exists() && fi.isFile()) {
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:             std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
Chris@249:                       << "found trivially at " << soname.toStdString() << std::endl;
Chris@249: #endif
Chris@249:             return soname;
Chris@249:         }
Chris@66: 
Chris@66:         if (fi.isAbsolute() && fi.absolutePath() != "") {
Chris@66:             file = findPluginFile(soname, fi.absolutePath());
Chris@66:             if (file != "") return file;
Chris@66:         }
Chris@66: 
Chris@66:         std::vector<QString> path = getPluginPath();
Chris@66:         for (std::vector<QString>::iterator i = path.begin();
Chris@66:              i != path.end(); ++i) {
Chris@66:             if (*i != "") {
Chris@66:                 file = findPluginFile(soname, *i);
Chris@66:                 if (file != "") return file;
Chris@66:             }
Chris@66:         }
Chris@66: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:         std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
Chris@249:                   << "not found" << std::endl;
Chris@249: #endif
Chris@249: 
Chris@66:         return "";
Chris@66:     }
Chris@66: }
Chris@66: 
Chris@66: Vamp::Plugin *
Chris@0: FeatureExtractionPluginFactory::instantiatePlugin(QString identifier,
Chris@0: 						  float inputSampleRate)
Chris@0: {
Chris@66:     Vamp::Plugin *rv = 0;
Chris@298:     Vamp::PluginHostAdapter *plugin = 0;
Chris@66: 
Chris@66:     const VampPluginDescriptor *descriptor = 0;
Chris@66:     int index = 0;
Chris@66: 
Chris@66:     QString type, soname, label;
Chris@66:     PluginIdentifier::parseIdentifier(identifier, type, soname, label);
Chris@71:     if (type != "vamp") {
Chris@0: 	std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Wrong factory for plugin type " << type.toStdString() << std::endl;
Chris@0: 	return 0;
Chris@0:     }
Chris@0: 
Chris@66:     QString found = findPluginFile(soname);
Chris@66: 
Chris@66:     if (found == "") {
Chris@66:         std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to find library file " << soname.toStdString() << std::endl;
Chris@117:         return 0;
Chris@66:     } else if (found != soname) {
Chris@249: 
Chris@249: #ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
Chris@249:         std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Given library name was " << soname.toStdString() << ", found at " << found.toStdString() << std::endl;
Chris@249:         std::cerr << soname.toStdString() << " -> " << found.toStdString() << std::endl;
Chris@249: #endif
Chris@249: 
Chris@249:     }        
Chris@0: 
Chris@66:     soname = found;
Chris@66: 
Chris@66:     void *libraryHandle = DLOPEN(soname, RTLD_LAZY);
Chris@66:             
Chris@66:     if (!libraryHandle) {
Chris@71:         std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to load library " << soname.toStdString() << ": " << DLERROR() << std::endl;
Chris@66:         return 0;
Chris@19:     }
Chris@19: 
Chris@66:     VampGetPluginDescriptorFunction fn = (VampGetPluginDescriptorFunction)
Chris@66:         DLSYM(libraryHandle, "vampGetPluginDescriptor");
Chris@66:     
Chris@66:     if (!fn) {
Chris@66:         std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: No descriptor function in " << soname.toStdString() << std::endl;
Chris@66:         goto done;
Chris@0:     }
Chris@0: 
Chris@239:     while ((descriptor = fn(VAMP_API_VERSION, index))) {
Chris@238:         if (label == descriptor->identifier) break;
Chris@66:         ++index;
Chris@47:     }
Chris@47: 
Chris@66:     if (!descriptor) {
Chris@66:         std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to find plugin \"" << label.toStdString() << "\" in library " << soname.toStdString() << std::endl;
Chris@66:         goto done;
Martin@37:     }
Martin@37: 
Chris@298:     plugin = new Vamp::PluginHostAdapter(descriptor, inputSampleRate);
Chris@298: 
Chris@298:     if (plugin) {
Chris@298:         m_handleMap[plugin] = libraryHandle;
Chris@298:         rv = new PluginDeletionNotifyAdapter(plugin, this);
Chris@298:     }
Chris@66: 
Chris@117: //    std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Constructed Vamp plugin, rv is " << rv << std::endl;
Chris@79: 
Chris@66:     //!!! need to dlclose() when plugins from a given library are unloaded
Chris@66: 
Chris@66: done:
Chris@66:     if (!rv) {
Chris@66:         if (DLCLOSE(libraryHandle) != 0) {
Chris@66:             std::cerr << "WARNING: FeatureExtractionPluginFactory::instantiatePlugin: Failed to unload library " << soname.toStdString() << std::endl;
Chris@66:         }
Chris@66:     }
Chris@73: 
Chris@73: //    std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Instantiated plugin " << label.toStdString() << " from library " << soname.toStdString() << ": descriptor " << descriptor << ", rv "<< rv << ", label " << rv->getName() << ", outputs " << rv->getOutputDescriptors().size() << std::endl;
Chris@73:     
Chris@66:     return rv;
Chris@0: }
Chris@0: 
Chris@298: void
Chris@298: FeatureExtractionPluginFactory::pluginDeleted(Vamp::Plugin *plugin)
Chris@298: {
Chris@298:     void *handle = m_handleMap[plugin];
Chris@298:     if (handle) {
Chris@299: //        std::cerr << "unloading library " << handle << " for plugin " << plugin << std::endl;
Chris@298:         DLCLOSE(handle);
Chris@298:     }
Chris@298:     m_handleMap.erase(plugin);
Chris@298: }
Chris@298: 
Chris@165: QString
Chris@165: FeatureExtractionPluginFactory::getPluginCategory(QString identifier)
Chris@165: {
Chris@165:     return m_taxonomy[identifier];
Chris@165: }
Chris@165: 
Chris@165: void
Chris@165: FeatureExtractionPluginFactory::generateTaxonomy()
Chris@165: {
Chris@165:     std::vector<QString> pluginPath = getPluginPath();
Chris@165:     std::vector<QString> path;
Chris@165: 
Chris@165:     for (size_t i = 0; i < pluginPath.size(); ++i) {
Chris@165: 	if (pluginPath[i].contains("/lib/")) {
Chris@165: 	    QString p(pluginPath[i]);
Chris@165:             path.push_back(p);
Chris@165: 	    p.replace("/lib/", "/share/");
Chris@165: 	    path.push_back(p);
Chris@165: 	}
Chris@165: 	path.push_back(pluginPath[i]);
Chris@165:     }
Chris@165: 
Chris@165:     for (size_t i = 0; i < path.size(); ++i) {
Chris@165: 
Chris@165: 	QDir dir(path[i], "*.cat");
Chris@165: 
Chris@165: //	std::cerr << "LADSPAPluginFactory::generateFallbackCategories: directory " << path[i].toStdString() << " has " << dir.count() << " .cat files" << std::endl;
Chris@165: 	for (unsigned int j = 0; j < dir.count(); ++j) {
Chris@165: 
Chris@165: 	    QFile file(path[i] + "/" + dir[j]);
Chris@165: 
Chris@165: //	    std::cerr << "LADSPAPluginFactory::generateFallbackCategories: about to open " << (path[i].toStdString() + "/" + dir[j].toStdString()) << std::endl;
Chris@165: 
Chris@165: 	    if (file.open(QIODevice::ReadOnly)) {
Chris@165: //		    std::cerr << "...opened" << std::endl;
Chris@165: 		QTextStream stream(&file);
Chris@165: 		QString line;
Chris@165: 
Chris@165: 		while (!stream.atEnd()) {
Chris@165: 		    line = stream.readLine();
Chris@165: //		    std::cerr << "line is: \"" << line.toStdString() << "\"" << std::endl;
Chris@165: 		    QString id = PluginIdentifier::canonicalise
Chris@165:                         (line.section("::", 0, 0));
Chris@165: 		    QString cat = line.section("::", 1, 1);
Chris@165: 		    m_taxonomy[id] = cat;
Chris@165: //		    std::cerr << "FeatureExtractionPluginFactory: set id \"" << id.toStdString() << "\" to cat \"" << cat.toStdString() << "\"" << std::endl;
Chris@165: 		}
Chris@165: 	    }
Chris@165: 	}
Chris@165:     }
Chris@165: }