comparison plugin/DSSIPluginFactory.cpp @ 0:da6937383da8

initial import

+/* -*- 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
+    
+    This is experimental software.  Not for distribution.
+*/
+
+/*
+   This is a modified version of a source file from the 
+   Rosegarden MIDI and audio sequencer and notation editor.
+   This file copyright 2000-2005 Chris Cannam.
+*/
+
+#include "DSSIPluginFactory.h"
+#include <iostream>
+
+#include <QString>
+
+#include "DSSIPluginInstance.h"
+#include "PluginIdentifier.h"
+
+//!!!
+#include "plugins/SamplePlayer.h"
+
+#include "base/System.h"
+
+#ifdef HAVE_LIBLRDF
+#include "lrdf.h"
+#endif // HAVE_LIBLRDF
+
+
+DSSIPluginFactory::DSSIPluginFactory() :
+    LADSPAPluginFactory()
+{
+    m_hostDescriptor.DSSI_API_Version = 2;
+    m_hostDescriptor.request_transport_information = NULL;
+    m_hostDescriptor.request_midi_send = DSSIPluginInstance::requestMidiSend;
+    m_hostDescriptor.request_non_rt_thread = DSSIPluginInstance::requestNonRTThread;
+    m_hostDescriptor.midi_send = DSSIPluginInstance::midiSend;
+}
+
+DSSIPluginFactory::~DSSIPluginFactory()
+{
+    // nothing else to do here either
+}
+
+void
+DSSIPluginFactory::enumeratePlugins(std::vector<QString> &list)
+{
+    for (std::vector<QString>::iterator i = m_identifiers.begin();
+	 i != m_identifiers.end(); ++i) {
+
+	const DSSI_Descriptor *ddesc = getDSSIDescriptor(*i);
+	if (!ddesc) continue;
+
+	const LADSPA_Descriptor *descriptor = ddesc->LADSPA_Plugin;
+	if (!descriptor) continue;
+	
+//	std::cerr << "DSSIPluginFactory::enumeratePlugins: Name " << (descriptor->Name ? descriptor->Name : "NONE" ) << std::endl;
+
+	list.push_back(*i);
+	list.push_back(descriptor->Name);
+	list.push_back(QString("%1").arg(descriptor->UniqueID));
+	list.push_back(descriptor->Label);
+	list.push_back(descriptor->Maker);
+	list.push_back(descriptor->Copyright);
+	list.push_back((ddesc->run_synth || ddesc->run_multiple_synths) ? "true" : "false");
+	list.push_back(ddesc->run_multiple_synths ? "true" : "false");
+	list.push_back(m_taxonomy[descriptor->UniqueID]);
+	list.push_back(QString("%1").arg(descriptor->PortCount));
+
+	for (unsigned long p = 0; p < descriptor->PortCount; ++p) {
+
+	    int type = 0;
+	    if (LADSPA_IS_PORT_CONTROL(descriptor->PortDescriptors[p])) {
+		type |= PortType::Control;
+	    } else {
+		type |= PortType::Audio;
+	    }
+	    if (LADSPA_IS_PORT_INPUT(descriptor->PortDescriptors[p])) {
+		type |= PortType::Input;
+	    } else {
+		type |= PortType::Output;
+	    }
+
+	    list.push_back(QString("%1").arg(p));
+	    list.push_back(descriptor->PortNames[p]);
+	    list.push_back(QString("%1").arg(type));
+	    list.push_back(QString("%1").arg(getPortDisplayHint(descriptor, p)));
+	    list.push_back(QString("%1").arg(getPortMinimum(descriptor, p)));
+	    list.push_back(QString("%1").arg(getPortMaximum(descriptor, p)));
+	    list.push_back(QString("%1").arg(getPortDefault(descriptor, p)));
+	}
+    }
+
+    unloadUnusedLibraries();
+}
+	
+RealTimePluginInstance *
+DSSIPluginFactory::instantiatePlugin(QString identifier,
+				     int instrument,
+				     int position,
+				     unsigned int sampleRate,
+				     unsigned int blockSize,
+				     unsigned int channels)
+{
+    const DSSI_Descriptor *descriptor = getDSSIDescriptor(identifier);
+
+    if (descriptor) {
+
+	DSSIPluginInstance *instance =
+	    new DSSIPluginInstance
+	    (this, instrument, identifier, position, sampleRate, blockSize, channels,
+	     descriptor);
+
+	m_instances.insert(instance);
+
+	return instance;
+    }
+
+    return 0;
+}
+
+const DSSI_Descriptor *
+DSSIPluginFactory::getDSSIDescriptor(QString identifier)
+{
+    QString type, soname, label;
+    PluginIdentifier::parseIdentifier(identifier, type, soname, label);
+
+    if (soname == PluginIdentifier::BUILTIN_PLUGIN_SONAME) {
+	if (label == "sample_player") {
+	    const DSSI_Descriptor *descriptor = SamplePlayer::getDescriptor(0);
+	    if (descriptor) {
+		descriptor->receive_host_descriptor(&m_hostDescriptor);
+	    }
+	    return descriptor;
+	} else {
+	    return 0;
+	}
+    }
+    
+    bool firstInLibrary = false;
+
+    if (m_libraryHandles.find(soname) == m_libraryHandles.end()) {
+	loadLibrary(soname);
+	if (m_libraryHandles.find(soname) == m_libraryHandles.end()) {
+	    std::cerr << "WARNING: DSSIPluginFactory::getDSSIDescriptor: loadLibrary failed for " << soname.toStdString() << std::endl;
+	    return 0;
+	}
+	firstInLibrary = true;
+    }
+
+    void *libraryHandle = m_libraryHandles[soname];
+
+    DSSI_Descriptor_Function fn = (DSSI_Descriptor_Function)
+	DLSYM(libraryHandle, "dssi_descriptor");
+
+    if (!fn) {
+	std::cerr << "WARNING: DSSIPluginFactory::getDSSIDescriptor: No descriptor function in library " << soname.toStdString() << std::endl;
+	return 0;
+    }
+
+    const DSSI_Descriptor *descriptor = 0;
+    
+    int index = 0;
+    while ((descriptor = fn(index))) {
+	if (descriptor->LADSPA_Plugin->Label == label) {
+	    if (firstInLibrary && (descriptor->DSSI_API_Version >= 2)) {
+		descriptor->receive_host_descriptor(&m_hostDescriptor);
+	    }
+	    return descriptor;
+	}
+	++index;
+    }
+
+    std::cerr << "WARNING: DSSIPluginFactory::getDSSIDescriptor: No such plugin as " << label.toStdString() << " in library " << soname.toStdString() << std::endl;
+
+    return 0;
+}
+
+const LADSPA_Descriptor *
+DSSIPluginFactory::getLADSPADescriptor(QString identifier)
+{
+    const DSSI_Descriptor *dssiDescriptor = getDSSIDescriptor(identifier);
+    if (dssiDescriptor) return dssiDescriptor->LADSPA_Plugin;
+    else return 0;
+}
+
+
+std::vector<QString>
+DSSIPluginFactory::getPluginPath()
+{
+    std::vector<QString> pathList;
+    std::string path;
+
+    char *cpath = getenv("DSSI_PATH");
+    if (cpath) path = cpath;
+
+    if (path == "") {
+	path = "/usr/local/lib/dssi:/usr/lib/dssi";
+	char *home = getenv("HOME");
+	if (home) path = std::string(home) + "/.dssi:" + path;
+    }
+
+    std::string::size_type index = 0, newindex = 0;
+
+    while ((newindex = path.find(':', index)) < path.size()) {
+	pathList.push_back(path.substr(index, newindex - index).c_str());
+	index = newindex + 1;
+    }
+    
+    pathList.push_back(path.substr(index).c_str());
+
+    return pathList;
+}
+
+
+#ifdef HAVE_LIBLRDF
+std::vector<QString>
+DSSIPluginFactory::getLRDFPath(QString &baseUri)
+{
+    std::vector<QString> pathList = getPluginPath();
+    std::vector<QString> lrdfPaths;
+
+    lrdfPaths.push_back("/usr/local/share/dssi/rdf");
+    lrdfPaths.push_back("/usr/share/dssi/rdf");
+
+    lrdfPaths.push_back("/usr/local/share/ladspa/rdf");
+    lrdfPaths.push_back("/usr/share/ladspa/rdf");
+
+    for (std::vector<QString>::iterator i = pathList.begin();
+	 i != pathList.end(); ++i) {
+	lrdfPaths.push_back(*i + "/rdf");
+    }
+
+#ifdef DSSI_BASE
+    baseUri = DSSI_BASE;
+#else
+    baseUri = "http://dssi.sourceforge.net/ontology#";
+#endif
+
+    return lrdfPaths;
+}    
+#endif
+
+
+void
+DSSIPluginFactory::discoverPlugins(QString soname)
+{
+    // Note that soname is expected to be a full path at this point,
+    // of a file that is known to exist
+
+    void *libraryHandle = DLOPEN(soname, RTLD_LAZY);
+
+    if (!libraryHandle) {
+        std::cerr << "WARNING: DSSIPluginFactory::discoverPlugins: couldn't load plugin library "
+                  << soname.toStdString() << " - " << DLERROR() << std::endl;
+        return;
+    }
+
+    DSSI_Descriptor_Function fn = (DSSI_Descriptor_Function)
+	DLSYM(libraryHandle, "dssi_descriptor");
+
+    if (!fn) {
+	std::cerr << "WARNING: DSSIPluginFactory::discoverPlugins: No descriptor function in " << soname.toStdString() << std::endl;
+	return;
+    }
+
+    const DSSI_Descriptor *descriptor = 0;
+    
+    int index = 0;
+    while ((descriptor = fn(index))) {
+
+	const LADSPA_Descriptor *ladspaDescriptor = descriptor->LADSPA_Plugin;
+	if (!ladspaDescriptor) {
+	    std::cerr << "WARNING: DSSIPluginFactory::discoverPlugins: No LADSPA descriptor for plugin " << index << " in " << soname.toStdString() << std::endl;
+	    ++index;
+	    continue;
+	}
+
+#ifdef HAVE_LIBLRDF
+	char *def_uri = 0;
+	lrdf_defaults *defs = 0;
+		
+	QString category = m_taxonomy[ladspaDescriptor->UniqueID];
+
+	if (category == "" && ladspaDescriptor->Name != 0) {
+	    std::string name = ladspaDescriptor->Name;
+	    if (name.length() > 4 &&
+		name.substr(name.length() - 4) == " VST") {
+		if (descriptor->run_synth || descriptor->run_multiple_synths) {
+		    category = "VST instruments";
+		} else {
+		    category = "VST effects";
+		}
+		m_taxonomy[ladspaDescriptor->UniqueID] = category;
+	    }
+	}
+	
+//	std::cerr << "Plugin id is " << ladspaDescriptor->UniqueID
+//		  << ", category is \"" << (category ? category : QString("(none)"))
+//		  << "\", name is " << ladspaDescriptor->Name
+//		  << ", label is " << ladspaDescriptor->Label
+//		  << std::endl;
+	
+	def_uri = lrdf_get_default_uri(ladspaDescriptor->UniqueID);
+	if (def_uri) {
+	    defs = lrdf_get_setting_values(def_uri);
+	}
+	
+	int controlPortNumber = 1;
+	
+	for (unsigned long i = 0; i < ladspaDescriptor->PortCount; i++) {
+	    
+	    if (LADSPA_IS_PORT_CONTROL(ladspaDescriptor->PortDescriptors[i])) {
+		
+		if (def_uri && defs) {
+		    
+		    for (int j = 0; j < defs->count; j++) {
+			if (defs->items[j].pid == controlPortNumber) {
+//			    std::cerr << "Default for this port (" << defs->items[j].pid << ", " << defs->items[j].label << ") is " << defs->items[j].value << "; applying this to port number " << i << " with name " << ladspaDescriptor->PortNames[i] << std::endl;
+			    m_portDefaults[ladspaDescriptor->UniqueID][i] =
+				defs->items[j].value;
+			}
+		    }
+		}
+		
+		++controlPortNumber;
+	    }
+	}
+#endif // HAVE_LIBLRDF
+
+	QString identifier = PluginIdentifier::createIdentifier
+	    ("dssi", soname, ladspaDescriptor->Label);
+	m_identifiers.push_back(identifier);
+
+	++index;
+    }
+
+    if (DLCLOSE(libraryHandle) != 0) {
+        std::cerr << "WARNING: DSSIPluginFactory::discoverPlugins - can't unload " << libraryHandle << std::endl;
+        return;
+    }
+}
+
+    
+