void PionPlugin::open(const std::string& plugin_name)
{
std::string plugin_file;
if (!findPluginFile(plugin_file, plugin_name))
throw PluginNotFoundException(plugin_name);
openFile(plugin_file);
}
Vamp::Plugin *
FeatureExtractionPluginFactory::instantiatePlugin(QString identifier,
float inputSampleRate)
{
Profiler profiler("FeatureExtractionPluginFactory::instantiatePlugin");
Vamp::Plugin *rv = 0;
Vamp::PluginHostAdapter *plugin = 0;
const VampPluginDescriptor *descriptor = 0;
int index = 0;
QString type, soname, label;
PluginIdentifier::parseIdentifier(identifier, type, soname, label);
if (type != "vamp") {
std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Wrong factory for plugin type " << type.toStdString() << std::endl;
return 0;
}
QString found = findPluginFile(soname);
if (found == "") {
std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to find library file " << soname.toStdString() << std::endl;
return 0;
} else if (found != soname) {
#ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Given library name was " << soname.toStdString() << ", found at " << found.toStdString() << std::endl;
std::cerr << soname.toStdString() << " -> " << found.toStdString() << std::endl;
#endif
}
soname = found;
void *libraryHandle = DLOPEN(soname, RTLD_LAZY | RTLD_LOCAL);
if (!libraryHandle) {
std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to load library " << soname.toStdString() << ": " << DLERROR() << std::endl;
return 0;
}
VampGetPluginDescriptorFunction fn = (VampGetPluginDescriptorFunction)
DLSYM(libraryHandle, "vampGetPluginDescriptor");
if (!fn) {
std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: No descriptor function in " << soname.toStdString() << std::endl;
goto done;
}
while ((descriptor = fn(VAMP_API_VERSION, index))) {
if (label == descriptor->identifier) break;
++index;
}
if (!descriptor) {
std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Failed to find plugin \"" << label.toStdString() << "\" in library " << soname.toStdString() << std::endl;
goto done;
}
plugin = new Vamp::PluginHostAdapter(descriptor, inputSampleRate);
if (plugin) {
m_handleMap[plugin] = libraryHandle;
rv = new PluginDeletionNotifyAdapter(plugin, this);
}
// std::cerr << "FeatureExtractionPluginFactory::instantiatePlugin: Constructed Vamp plugin, rv is " << rv << std::endl;
//!!! need to dlclose() when plugins from a given library are unloaded
done:
if (!rv) {
if (DLCLOSE(libraryHandle) != 0) {
std::cerr << "WARNING: FeatureExtractionPluginFactory::instantiatePlugin: Failed to unload library " << soname.toStdString() << std::endl;
}
}
// 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;
return rv;
}
QString
FeatureExtractionPluginFactory::findPluginFile(QString soname, QString inDir)
{
QString file = "";
#ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
std::cerr << "FeatureExtractionPluginFactory::findPluginFile(\""
<< soname.toStdString() << "\", \"" << inDir.toStdString() << "\")"
<< std::endl;
#endif
if (inDir != "") {
QDir dir(inDir, PLUGIN_GLOB,
QDir::Name | QDir::IgnoreCase,
QDir::Files | QDir::Readable);
if (!dir.exists()) return "";
file = dir.filePath(QFileInfo(soname).fileName());
if (QFileInfo(file).exists() && QFileInfo(file).isFile()) {
#ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
<< "found trivially at " << file.toStdString() << std::endl;
#endif
return file;
}
for (unsigned int j = 0; j < dir.count(); ++j) {
file = dir.filePath(dir[j]);
if (QFileInfo(file).baseName() == QFileInfo(soname).baseName()) {
#ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
<< "found \"" << soname.toStdString() << "\" at " << file.toStdString() << std::endl;
#endif
return file;
}
}
#ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
std::cerr << "FeatureExtractionPluginFactory::findPluginFile (with dir): "
<< "not found" << std::endl;
#endif
return "";
} else {
QFileInfo fi(soname);
if (fi.isAbsolute() && fi.exists() && fi.isFile()) {
#ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
<< "found trivially at " << soname.toStdString() << std::endl;
#endif
return soname;
}
if (fi.isAbsolute() && fi.absolutePath() != "") {
file = findPluginFile(soname, fi.absolutePath());
if (file != "") return file;
}
std::vector<QString> path = getPluginPath();
for (std::vector<QString>::iterator i = path.begin();
i != path.end(); ++i) {
if (*i != "") {
file = findPluginFile(soname, *i);
if (file != "") return file;
}
}
#ifdef DEBUG_PLUGIN_SCAN_AND_INSTANTIATE
std::cerr << "FeatureExtractionPluginFactory::findPluginFile: "
<< "not found" << std::endl;
#endif
return "";
}
}