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@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: /*
Chris@0:    This is a modified version of a source file from the 
Chris@0:    Rosegarden MIDI and audio sequencer and notation editor.
Chris@17:    This file copyright 2000-2006 Chris Cannam and Richard Bown.
Chris@0: */
Chris@0: 
Chris@0: #include "LADSPAPluginFactory.h"
Chris@0: #include <iostream>
Chris@0: 
Chris@0: #include <QDir>
Chris@0: #include <QFile>
Chris@0: #include <QTextStream>
Chris@0: 
Chris@0: #include <cmath>
Chris@0: 
Chris@0: #include "LADSPAPluginInstance.h"
Chris@0: #include "PluginIdentifier.h"
Chris@0: 
Chris@0: #include "base/System.h"
Chris@0: 
Chris@35: #ifdef HAVE_LRDF
Chris@0: #include "lrdf.h"
Chris@35: #endif // HAVE_LRDF
Chris@0: 
Chris@0: 
Chris@0: LADSPAPluginFactory::LADSPAPluginFactory()
Chris@0: {
Chris@0: }
Chris@0:  
Chris@0: LADSPAPluginFactory::~LADSPAPluginFactory()
Chris@0: {
Chris@0:     for (std::set<RealTimePluginInstance *>::iterator i = m_instances.begin();
Chris@0: 	 i != m_instances.end(); ++i) {
Chris@0: 	(*i)->setFactory(0);
Chris@0: 	delete *i;
Chris@0:     }
Chris@0:     m_instances.clear();
Chris@0:     unloadUnusedLibraries();
Chris@0: }
Chris@0: 
Chris@0: const std::vector<QString> &
Chris@0: LADSPAPluginFactory::getPluginIdentifiers() const
Chris@0: {
Chris@0:     return m_identifiers;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::enumeratePlugins(std::vector<QString> &list)
Chris@0: {
Chris@0:     for (std::vector<QString>::iterator i = m_identifiers.begin();
Chris@0: 	 i != m_identifiers.end(); ++i) {
Chris@0: 
Chris@0: 	const LADSPA_Descriptor *descriptor = getLADSPADescriptor(*i);
Chris@0: 
Chris@0: 	if (!descriptor) {
Chris@0: 	    std::cerr << "WARNING: LADSPAPluginFactory::enumeratePlugins: couldn't get descriptor for identifier " << i->toStdString() << std::endl;
Chris@0: 	    continue;
Chris@0: 	}
Chris@0: 	
Chris@0: 	list.push_back(*i);
Chris@0: 	list.push_back(descriptor->Name);
Chris@0: 	list.push_back(QString("%1").arg(descriptor->UniqueID));
Chris@0: 	list.push_back(descriptor->Label);
Chris@0: 	list.push_back(descriptor->Maker);
Chris@0: 	list.push_back(descriptor->Copyright);
Chris@0: 	list.push_back("false"); // is synth
Chris@0: 	list.push_back("false"); // is grouped
Chris@0: 	
Chris@0: 	if (m_taxonomy.find(descriptor->UniqueID) != m_taxonomy.end() &&
Chris@0: 	    m_taxonomy[descriptor->UniqueID] != "") {
Chris@0: //		std::cerr << "LADSPAPluginFactory: cat for " << i->toStdString()<< " found in taxonomy as " << m_taxonomy[descriptor->UniqueID] << std::endl;
Chris@0: 	    list.push_back(m_taxonomy[descriptor->UniqueID]);
Chris@0: 
Chris@0: 	} else if (m_fallbackCategories.find(*i) !=
Chris@0: 		   m_fallbackCategories.end()) {
Chris@0: 	    list.push_back(m_fallbackCategories[*i]);
Chris@0: //		std::cerr << "LADSPAPluginFactory: cat for " << i->toStdString()  <<" found in fallbacks as " << m_fallbackCategories[*i] << std::endl;
Chris@0: 
Chris@0: 	} else {
Chris@0: 	    list.push_back("");
Chris@0: //		std::cerr << "LADSPAPluginFactory: cat for " << i->toStdString() << " not found (despite having " << m_fallbackCategories.size() << " fallbacks)" << std::endl;
Chris@0: 	    
Chris@0: 	}
Chris@0: 
Chris@0: 	list.push_back(QString("%1").arg(descriptor->PortCount));
Chris@0: 
Chris@0: 	for (unsigned long p = 0; p < descriptor->PortCount; ++p) {
Chris@0: 
Chris@0: 	    int type = 0;
Chris@0: 	    if (LADSPA_IS_PORT_CONTROL(descriptor->PortDescriptors[p])) {
Chris@0: 		type |= PortType::Control;
Chris@0: 	    } else {
Chris@0: 		type |= PortType::Audio;
Chris@0: 	    }
Chris@0: 	    if (LADSPA_IS_PORT_INPUT(descriptor->PortDescriptors[p])) {
Chris@0: 		type |= PortType::Input;
Chris@0: 	    } else {
Chris@0: 		type |= PortType::Output;
Chris@0: 	    }
Chris@0: 
Chris@0: 	    list.push_back(QString("%1").arg(p));
Chris@0: 	    list.push_back(descriptor->PortNames[p]);
Chris@0: 	    list.push_back(QString("%1").arg(type));
Chris@0: 	    list.push_back(QString("%1").arg(getPortDisplayHint(descriptor, p)));
Chris@0: 	    list.push_back(QString("%1").arg(getPortMinimum(descriptor, p)));
Chris@0: 	    list.push_back(QString("%1").arg(getPortMaximum(descriptor, p)));
Chris@0: 	    list.push_back(QString("%1").arg(getPortDefault(descriptor, p)));
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     unloadUnusedLibraries();
Chris@0: }
Chris@0: 	
Chris@60: const RealTimePluginDescriptor *
Chris@60: LADSPAPluginFactory::getPluginDescriptor(QString identifier) const
Chris@60: {
Chris@60:     std::map<QString, RealTimePluginDescriptor *>::const_iterator i =
Chris@60:         m_rtDescriptors.find(identifier);
Chris@60: 
Chris@60:     if (i != m_rtDescriptors.end()) {
Chris@60:         return i->second;
Chris@60:     } 
Chris@60: 
Chris@60:     return 0;
Chris@60: }
Chris@60: 
Chris@0: float
Chris@0: LADSPAPluginFactory::getPortMinimum(const LADSPA_Descriptor *descriptor, int port)
Chris@0: {
Chris@0:     LADSPA_PortRangeHintDescriptor d =
Chris@0: 	descriptor->PortRangeHints[port].HintDescriptor;
Chris@0: 
Chris@0:     float minimum = 0.0;
Chris@0: 		
Chris@0:     if (LADSPA_IS_HINT_BOUNDED_BELOW(d)) {
Chris@0: 	float lb = descriptor->PortRangeHints[port].LowerBound;
Chris@0: 	minimum = lb;
Chris@0:     } else if (LADSPA_IS_HINT_BOUNDED_ABOVE(d)) {
Chris@0: 	float ub = descriptor->PortRangeHints[port].UpperBound;
Chris@0: 	minimum = std::min(0.0, ub - 1.0);
Chris@0:     }
Chris@0:     
Chris@0:     if (LADSPA_IS_HINT_SAMPLE_RATE(d)) {
Chris@0: 	minimum *= m_sampleRate;
Chris@0:     }
Chris@0: 
Chris@0:     return minimum;
Chris@0: }
Chris@0: 
Chris@0: float
Chris@0: LADSPAPluginFactory::getPortMaximum(const LADSPA_Descriptor *descriptor, int port)
Chris@0: {
Chris@0:     LADSPA_PortRangeHintDescriptor d =
Chris@0: 	descriptor->PortRangeHints[port].HintDescriptor;
Chris@0: 
Chris@0:     float maximum = 1.0;
Chris@0:     
Chris@0:     if (LADSPA_IS_HINT_BOUNDED_ABOVE(d)) {
Chris@0: 	float ub = descriptor->PortRangeHints[port].UpperBound;
Chris@0: 	maximum = ub;
Chris@0:     } else {
Chris@0: 	float lb = descriptor->PortRangeHints[port].LowerBound;
Chris@0: 	maximum = lb + 1.0;
Chris@0:     }
Chris@0:     
Chris@0:     if (LADSPA_IS_HINT_SAMPLE_RATE(d)) {
Chris@0: 	maximum *= m_sampleRate;
Chris@0:     }
Chris@0: 
Chris@0:     return maximum;
Chris@0: }
Chris@0: 
Chris@0: float
Chris@0: LADSPAPluginFactory::getPortDefault(const LADSPA_Descriptor *descriptor, int port)
Chris@0: {
Chris@0:     float minimum = getPortMinimum(descriptor, port);
Chris@0:     float maximum = getPortMaximum(descriptor, port);
Chris@0:     float deft;
Chris@0: 
Chris@0:     if (m_portDefaults.find(descriptor->UniqueID) != 
Chris@0: 	m_portDefaults.end()) {
Chris@0: 	if (m_portDefaults[descriptor->UniqueID].find(port) !=
Chris@0: 	    m_portDefaults[descriptor->UniqueID].end()) {
Chris@0: 
Chris@0: 	    deft = m_portDefaults[descriptor->UniqueID][port];
Chris@0: 	    if (deft < minimum) deft = minimum;
Chris@0: 	    if (deft > maximum) deft = maximum;
Chris@0: 	    return deft;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     LADSPA_PortRangeHintDescriptor d =
Chris@0: 	descriptor->PortRangeHints[port].HintDescriptor;
Chris@0: 
Chris@0:     bool logarithmic = LADSPA_IS_HINT_LOGARITHMIC(d);
Chris@0:     
Chris@0:     if (!LADSPA_IS_HINT_HAS_DEFAULT(d)) {
Chris@0: 	
Chris@0: 	deft = minimum;
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_MINIMUM(d)) {
Chris@0: 	
Chris@0: 	deft = minimum;
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_LOW(d)) {
Chris@0: 	
Chris@0: 	if (logarithmic) {
Chris@0: 	    deft = powf(10, log10(minimum) * 0.75 +
Chris@0: 			    log10(maximum) * 0.25);
Chris@0: 	} else {
Chris@0: 	    deft = minimum * 0.75 + maximum * 0.25;
Chris@0: 	}
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_MIDDLE(d)) {
Chris@0: 	
Chris@0: 	if (logarithmic) {
Chris@0: 	    deft = powf(10, log10(minimum) * 0.5 +
Chris@0: 		   	    log10(maximum) * 0.5);
Chris@0: 	} else {
Chris@0: 	    deft = minimum * 0.5 + maximum * 0.5;
Chris@0: 	}
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_HIGH(d)) {
Chris@0: 	
Chris@0: 	if (logarithmic) {
Chris@0: 	    deft = powf(10, log10(minimum) * 0.25 +
Chris@0: 			    log10(maximum) * 0.75);
Chris@0: 	} else {
Chris@0: 	    deft = minimum * 0.25 + maximum * 0.75;
Chris@0: 	}
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_MAXIMUM(d)) {
Chris@0: 	
Chris@0: 	deft = maximum;
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_0(d)) {
Chris@0: 	
Chris@0: 	deft = 0.0;
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_1(d)) {
Chris@0: 	
Chris@0: 	deft = 1.0;
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_100(d)) {
Chris@0: 	
Chris@0: 	deft = 100.0;
Chris@0: 	
Chris@0:     } else if (LADSPA_IS_HINT_DEFAULT_440(d)) {
Chris@0: 	
Chris@0: 	deft = 440.0;
Chris@0: 	
Chris@0:     } else {
Chris@0: 	
Chris@0: 	deft = minimum;
Chris@0:     }
Chris@0:     
Chris@0:     if (LADSPA_IS_HINT_SAMPLE_RATE(d)) {
Chris@0: 	deft *= m_sampleRate;
Chris@0:     }
Chris@0: 
Chris@0:     return deft;
Chris@0: }
Chris@0: 
Chris@57: float
Chris@57: LADSPAPluginFactory::getPortQuantization(const LADSPA_Descriptor *descriptor, int port)
Chris@57: {
Chris@57:     int displayHint = getPortDisplayHint(descriptor, port);
Chris@57:     if (displayHint & PortHint::Toggled) {
Chris@57:         return lrintf(getPortMaximum(descriptor, port)) - 
Chris@57:             lrintf(getPortMinimum(descriptor, port));
Chris@57:     }
Chris@57:     if (displayHint & PortHint::Integer) {
Chris@57:         return 1.0;
Chris@57:     }
Chris@57:     return 0.0;
Chris@57: }
Chris@57: 
Chris@0: int
Chris@0: LADSPAPluginFactory::getPortDisplayHint(const LADSPA_Descriptor *descriptor, int port)
Chris@0: {
Chris@0:     LADSPA_PortRangeHintDescriptor d =
Chris@0: 	descriptor->PortRangeHints[port].HintDescriptor;
Chris@0:     int hint = PortHint::NoHint;
Chris@0: 
Chris@0:     if (LADSPA_IS_HINT_TOGGLED(d)) hint |= PortHint::Toggled;
Chris@0:     if (LADSPA_IS_HINT_INTEGER(d)) hint |= PortHint::Integer;
Chris@0:     if (LADSPA_IS_HINT_LOGARITHMIC(d)) hint |= PortHint::Logarithmic;
Chris@0: 
Chris@0:     return hint;
Chris@0: }
Chris@0: 
Chris@0: 
Chris@0: RealTimePluginInstance *
Chris@0: LADSPAPluginFactory::instantiatePlugin(QString identifier,
Chris@0: 				       int instrument,
Chris@0: 				       int position,
Chris@0: 				       unsigned int sampleRate,
Chris@0: 				       unsigned int blockSize,
Chris@0: 				       unsigned int channels)
Chris@0: {
Chris@0:     const LADSPA_Descriptor *descriptor = getLADSPADescriptor(identifier);
Chris@0: 
Chris@0:     if (descriptor) {
Chris@0: 
Chris@0: 	LADSPAPluginInstance *instance =
Chris@0: 	    new LADSPAPluginInstance
Chris@0: 	    (this, instrument, identifier, position, sampleRate, blockSize, channels,
Chris@0: 	     descriptor);
Chris@0: 
Chris@0: 	m_instances.insert(instance);
Chris@0: 
Chris@78:         std::cerr << "LADSPAPluginFactory::instantiatePlugin("
Chris@78:                   << identifier.toStdString() << ": now have " << m_instances.size() << " instances" << std::endl;
Chris@78: 
Chris@0: 	return instance;
Chris@0:     }
Chris@0: 
Chris@0:     return 0;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::releasePlugin(RealTimePluginInstance *instance,
Chris@0: 				   QString identifier)
Chris@0: {
Chris@0:     if (m_instances.find(instance) == m_instances.end()) {
Chris@0: 	std::cerr << "WARNING: LADSPAPluginFactory::releasePlugin: Not one of mine!"
Chris@0: 		  << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     QString type, soname, label;
Chris@0:     PluginIdentifier::parseIdentifier(identifier, type, soname, label);
Chris@0: 
Chris@0:     m_instances.erase(instance);
Chris@0: 
Chris@0:     bool stillInUse = false;
Chris@0: 
Chris@0:     for (std::set<RealTimePluginInstance *>::iterator ii = m_instances.begin();
Chris@0: 	 ii != m_instances.end(); ++ii) {
Chris@0: 	QString itype, isoname, ilabel;
Chris@0: 	PluginIdentifier::parseIdentifier((*ii)->getIdentifier(), itype, isoname, ilabel);
Chris@0: 	if (isoname == soname) {
Chris@78: 	    std::cerr << "LADSPAPluginFactory::releasePlugin: dll " << soname.toStdString() << " is still in use for plugin " << ilabel.toStdString() << std::endl;
Chris@0: 	    stillInUse = true;
Chris@0: 	    break;
Chris@0: 	}
Chris@0:     }
Chris@0:     
Chris@0:     if (!stillInUse) {
Chris@118:         if (soname != PluginIdentifier::BUILTIN_PLUGIN_SONAME) {
Chris@118:             std::cerr << "LADSPAPluginFactory::releasePlugin: dll " << soname.toStdString() << " no longer in use, unloading" << std::endl;
Chris@118:             unloadLibrary(soname);
Chris@118:         }
Chris@0:     }
Chris@78: 
Chris@78:     std::cerr << "LADSPAPluginFactory::releasePlugin("
Chris@78:                   << identifier.toStdString() << ": now have " << m_instances.size() << " instances" << std::endl;
Chris@0: }
Chris@0: 
Chris@0: const LADSPA_Descriptor *
Chris@0: LADSPAPluginFactory::getLADSPADescriptor(QString identifier)
Chris@0: {
Chris@0:     QString type, soname, label;
Chris@0:     PluginIdentifier::parseIdentifier(identifier, type, soname, label);
Chris@0: 
Chris@0:     if (m_libraryHandles.find(soname) == m_libraryHandles.end()) {
Chris@0: 	loadLibrary(soname);
Chris@0: 	if (m_libraryHandles.find(soname) == m_libraryHandles.end()) {
Chris@0: 	    std::cerr << "WARNING: LADSPAPluginFactory::getLADSPADescriptor: loadLibrary failed for " << soname.toStdString() << std::endl;
Chris@0: 	    return 0;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     void *libraryHandle = m_libraryHandles[soname];
Chris@0: 
Chris@0:     LADSPA_Descriptor_Function fn = (LADSPA_Descriptor_Function)
Chris@0: 	DLSYM(libraryHandle, "ladspa_descriptor");
Chris@0: 
Chris@0:     if (!fn) {
Chris@0: 	std::cerr << "WARNING: LADSPAPluginFactory::getLADSPADescriptor: No descriptor function in library " << soname.toStdString() << std::endl;
Chris@0: 	return 0;
Chris@0:     }
Chris@0: 
Chris@0:     const LADSPA_Descriptor *descriptor = 0;
Chris@0:     
Chris@0:     int index = 0;
Chris@0:     while ((descriptor = fn(index))) {
Chris@0: 	if (descriptor->Label == label) return descriptor;
Chris@0: 	++index;
Chris@0:     }
Chris@0: 
Chris@0:     std::cerr << "WARNING: LADSPAPluginFactory::getLADSPADescriptor: No such plugin as " << label.toStdString() << " in library " << soname.toStdString() << std::endl;
Chris@0: 
Chris@0:     return 0;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::loadLibrary(QString soName)
Chris@0: {
Chris@0:     void *libraryHandle = DLOPEN(soName, RTLD_NOW);
Chris@106:     if (libraryHandle) {
Chris@106:         m_libraryHandles[soName] = libraryHandle;
Chris@106:         std::cerr << "LADSPAPluginFactory::loadLibrary: Loaded library \"" << soName.toStdString() << "\"" << std::endl;
Chris@106:         return;
Chris@106:     }
Chris@106: 
Chris@106:     if (QFileInfo(soName).exists()) {
Chris@106:         DLERROR();
Chris@106:         std::cerr << "LADSPAPluginFactory::loadLibrary: Library \"" << soName.toStdString() << "\" exists, but failed to load it" << std::endl;
Chris@106:         return;
Chris@106:     }
Chris@106: 
Chris@106:     std::vector<QString> pathList = getPluginPath();
Chris@106: 
Chris@106:     QString fileName = QFile(soName).fileName();
Chris@106:     QString base = QFileInfo(soName).baseName();
Chris@106: 
Chris@106:     for (std::vector<QString>::iterator i = pathList.begin();
Chris@106: 	 i != pathList.end(); ++i) {
Chris@106:         
Chris@106:         std::cerr << "Looking at: " << (*i).toStdString() << std::endl;
Chris@106: 
Chris@106:         QDir dir(*i, PLUGIN_GLOB,
Chris@106:                  QDir::Name | QDir::IgnoreCase,
Chris@106:                  QDir::Files | QDir::Readable);
Chris@106: 
Chris@106:         if (QFileInfo(dir.filePath(fileName)).exists()) {
Chris@106:             std::cerr << "Loading: " << fileName.toStdString() << std::endl;
Chris@106:             libraryHandle = DLOPEN(dir.filePath(fileName), RTLD_NOW);
Chris@106:             if (libraryHandle) m_libraryHandles[soName] = libraryHandle;
Chris@106:             return;
Chris@106:         }
Chris@106: 
Chris@106: 	for (unsigned int j = 0; j < dir.count(); ++j) {
Chris@106:             QString file = dir.filePath(dir[j]);
Chris@106:             if (QFileInfo(file).baseName() == base) {
Chris@106:                 std::cerr << "Loading: " << file.toStdString() << std::endl;
Chris@106:                 libraryHandle = DLOPEN(file, RTLD_NOW);
Chris@106:                 if (libraryHandle) m_libraryHandles[soName] = libraryHandle;
Chris@106:                 return;
Chris@106:             }
Chris@106:         }
Chris@106:     }
Chris@106: 
Chris@106:     std::cerr << "LADSPAPluginFactory::loadLibrary: Failed to locate plugin library \"" << soName.toStdString() << "\"" << std::endl;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::unloadLibrary(QString soName)
Chris@0: {
Chris@0:     LibraryHandleMap::iterator li = m_libraryHandles.find(soName);
Chris@0:     if (li != m_libraryHandles.end()) {
Chris@0: //	std::cerr << "unloading " << soname.toStdString() << std::endl;
Chris@0: 	DLCLOSE(m_libraryHandles[soName]);
Chris@0: 	m_libraryHandles.erase(li);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::unloadUnusedLibraries()
Chris@0: {
Chris@0:     std::vector<QString> toUnload;
Chris@0: 
Chris@0:     for (LibraryHandleMap::iterator i = m_libraryHandles.begin();
Chris@0: 	 i != m_libraryHandles.end(); ++i) {
Chris@0: 
Chris@0: 	bool stillInUse = false;
Chris@0: 
Chris@0: 	for (std::set<RealTimePluginInstance *>::iterator ii = m_instances.begin();
Chris@0: 	     ii != m_instances.end(); ++ii) {
Chris@0: 
Chris@0: 	    QString itype, isoname, ilabel;
Chris@0: 	    PluginIdentifier::parseIdentifier((*ii)->getIdentifier(), itype, isoname, ilabel);
Chris@0: 	    if (isoname == i->first) {
Chris@0: 		stillInUse = true;
Chris@0: 		break;
Chris@0: 	    }
Chris@0: 	}
Chris@0: 
Chris@0: 	if (!stillInUse) toUnload.push_back(i->first);
Chris@0:     }
Chris@0: 
Chris@0:     for (std::vector<QString>::iterator i = toUnload.begin();
Chris@0: 	 i != toUnload.end(); ++i) {
Chris@118:         if (*i != PluginIdentifier::BUILTIN_PLUGIN_SONAME) {
Chris@118:             unloadLibrary(*i);
Chris@118:         }
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: 
Chris@0: // It is only later, after they've gone,
Chris@0: // I realize they have delivered a letter.
Chris@0: // It's a letter from my wife.  "What are you doing
Chris@0: // there?" my wife asks.  "Are you drinking?"
Chris@0: // I study the postmark for hours.  Then it, too, begins to fade.
Chris@0: // I hope someday to forget all this.
Chris@0: 
Chris@0: 
Chris@0: std::vector<QString>
Chris@0: LADSPAPluginFactory::getPluginPath()
Chris@0: {
Chris@0:     std::vector<QString> pathList;
Chris@0:     std::string path;
Chris@0: 
Chris@0:     char *cpath = getenv("LADSPA_PATH");
Chris@0:     if (cpath) path = cpath;
Chris@0: 
Chris@0:     if (path == "") {
Chris@0: 	path = "/usr/local/lib/ladspa:/usr/lib/ladspa";
Chris@0: 	char *home = getenv("HOME");
Chris@0: 	if (home) path = std::string(home) + "/.ladspa:" + path;
Chris@0:     }
Chris@0: 
Chris@0:     std::string::size_type index = 0, newindex = 0;
Chris@0: 
Chris@0:     while ((newindex = path.find(':', index)) < path.size()) {
Chris@0: 	pathList.push_back(path.substr(index, newindex - index).c_str());
Chris@0: 	index = newindex + 1;
Chris@0:     }
Chris@0:     
Chris@0:     pathList.push_back(path.substr(index).c_str());
Chris@0: 
Chris@0:     return pathList;
Chris@0: }
Chris@0: 
Chris@0: 
Chris@35: #ifdef HAVE_LRDF
Chris@0: std::vector<QString>
Chris@0: LADSPAPluginFactory::getLRDFPath(QString &baseUri)
Chris@0: {
Chris@0:     std::vector<QString> pathList = getPluginPath();
Chris@0:     std::vector<QString> lrdfPaths;
Chris@0: 
Chris@0:     lrdfPaths.push_back("/usr/local/share/ladspa/rdf");
Chris@0:     lrdfPaths.push_back("/usr/share/ladspa/rdf");
Chris@0: 
Chris@0:     for (std::vector<QString>::iterator i = pathList.begin();
Chris@0: 	 i != pathList.end(); ++i) {
Chris@0: 	lrdfPaths.push_back(*i + "/rdf");
Chris@0:     }
Chris@0: 
Chris@0:     baseUri = LADSPA_BASE;
Chris@0:     return lrdfPaths;
Chris@0: }    
Chris@0: #endif
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::discoverPlugins()
Chris@0: {
Chris@0:     std::vector<QString> pathList = getPluginPath();
Chris@0: 
Chris@0: //    std::cerr << "LADSPAPluginFactory::discoverPlugins - "
Chris@0: //	      << "discovering plugins; path is ";
Chris@0:     for (std::vector<QString>::iterator i = pathList.begin();
Chris@0: 	 i != pathList.end(); ++i) {
Chris@0: 	std::cerr << "[" << i->toStdString() << "] ";
Chris@0:     }
Chris@0:     std::cerr << std::endl;
Chris@0: 
Chris@35: #ifdef HAVE_LRDF
Chris@0:     // Initialise liblrdf and read the description files 
Chris@0:     //
Chris@0:     lrdf_init();
Chris@0: 
Chris@0:     QString baseUri;
Chris@0:     std::vector<QString> lrdfPaths = getLRDFPath(baseUri);
Chris@0: 
Chris@0:     bool haveSomething = false;
Chris@0: 
Chris@0:     for (size_t i = 0; i < lrdfPaths.size(); ++i) {
Chris@0: 	QDir dir(lrdfPaths[i], "*.rdf;*.rdfs");
Chris@0: 	for (unsigned int j = 0; j < dir.count(); ++j) {
Chris@0: 	    if (!lrdf_read_file(QString("file:" + lrdfPaths[i] + "/" + dir[j]).toStdString().c_str())) {
Chris@0: //		std::cerr << "LADSPAPluginFactory: read RDF file " << (lrdfPaths[i] + "/" + dir[j]) << std::endl;
Chris@0: 		haveSomething = true;
Chris@0: 	    }
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     if (haveSomething) {
Chris@0: 	generateTaxonomy(baseUri + "Plugin", "");
Chris@0:     }
Chris@35: #endif // HAVE_LRDF
Chris@0: 
Chris@0:     generateFallbackCategories();
Chris@0: 
Chris@0:     for (std::vector<QString>::iterator i = pathList.begin();
Chris@0: 	 i != pathList.end(); ++i) {
Chris@0: 
Chris@0: 	QDir pluginDir(*i, PLUGIN_GLOB);
Chris@0: 
Chris@0: 	for (unsigned int j = 0; j < pluginDir.count(); ++j) {
Chris@0: 	    discoverPlugins(QString("%1/%2").arg(*i).arg(pluginDir[j]));
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@35: #ifdef HAVE_LRDF
Chris@0:     // Cleanup after the RDF library
Chris@0:     //
Chris@0:     lrdf_cleanup();
Chris@35: #endif // HAVE_LRDF
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::discoverPlugins(QString soname)
Chris@0: {
Chris@0:     void *libraryHandle = DLOPEN(soname, RTLD_LAZY);
Chris@0: 
Chris@0:     if (!libraryHandle) {
Chris@0:         std::cerr << "WARNING: LADSPAPluginFactory::discoverPlugins: couldn't load plugin library "
Chris@0:                   << soname.toStdString() << " - " << DLERROR() << std::endl;
Chris@0:         return;
Chris@0:     }
Chris@0: 
Chris@0:     LADSPA_Descriptor_Function fn = (LADSPA_Descriptor_Function)
Chris@0: 	DLSYM(libraryHandle, "ladspa_descriptor");
Chris@0: 
Chris@0:     if (!fn) {
Chris@0: 	std::cerr << "WARNING: LADSPAPluginFactory::discoverPlugins: No descriptor function in " << soname.toStdString() << std::endl;
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     const LADSPA_Descriptor *descriptor = 0;
Chris@0:     
Chris@0:     int index = 0;
Chris@0:     while ((descriptor = fn(index))) {
Chris@0: 
Chris@60:         RealTimePluginDescriptor *rtd = new RealTimePluginDescriptor;
Chris@60:         rtd->name = descriptor->Name;
Chris@60:         rtd->label = descriptor->Label;
Chris@60:         rtd->maker = descriptor->Maker;
Chris@60:         rtd->copyright = descriptor->Copyright;
Chris@60:         rtd->category = "";
Chris@60:         rtd->isSynth = false;
Chris@60:         rtd->parameterCount = 0;
Chris@60:         rtd->audioInputPortCount = 0;
Chris@60:         rtd->controlOutputPortCount = 0;
Chris@60: 
Chris@35: #ifdef HAVE_LRDF
Chris@0: 	char *def_uri = 0;
Chris@0: 	lrdf_defaults *defs = 0;
Chris@0: 		
Chris@0: 	QString category = m_taxonomy[descriptor->UniqueID];
Chris@0: 	
Chris@0: 	if (category == "" && descriptor->Name != 0) {
Chris@0: 	    std::string name = descriptor->Name;
Chris@0: 	    if (name.length() > 4 &&
Chris@0: 		name.substr(name.length() - 4) == " VST") {
Chris@0: 		category = "VST effects";
Chris@0: 		m_taxonomy[descriptor->UniqueID] = category;
Chris@0: 	    }
Chris@0: 	}
Chris@0: 	
Chris@60:         rtd->category = category.toStdString();
Chris@60: 
Chris@0: //	std::cerr << "Plugin id is " << descriptor->UniqueID
Chris@0: //		  << ", category is \"" << (category ? category : QString("(none)"))
Chris@0: //		  << "\", name is " << descriptor->Name
Chris@0: //		  << ", label is " << descriptor->Label
Chris@0: //		  << std::endl;
Chris@0: 	
Chris@0: 	def_uri = lrdf_get_default_uri(descriptor->UniqueID);
Chris@0: 	if (def_uri) {
Chris@0: 	    defs = lrdf_get_setting_values(def_uri);
Chris@0: 	}
Chris@0: 
Chris@0: 	int controlPortNumber = 1;
Chris@0: 	
Chris@0: 	for (unsigned long i = 0; i < descriptor->PortCount; i++) {
Chris@0: 	    
Chris@0: 	    if (LADSPA_IS_PORT_CONTROL(descriptor->PortDescriptors[i])) {
Chris@0: 		
Chris@0: 		if (def_uri && defs) {
Chris@0: 		    
Chris@0: 		    for (int j = 0; j < defs->count; j++) {
Chris@0: 			if (defs->items[j].pid == controlPortNumber) {
Chris@0: //			    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 " << descriptor->PortNames[i] << std::endl;
Chris@0: 			    m_portDefaults[descriptor->UniqueID][i] =
Chris@0: 				defs->items[j].value;
Chris@0: 			}
Chris@0: 		    }
Chris@0: 		}
Chris@0: 		
Chris@0: 		++controlPortNumber;
Chris@0: 	    }
Chris@0: 	}
Chris@35: #endif // HAVE_LRDF
Chris@0: 
Chris@60: 	for (unsigned long i = 0; i < descriptor->PortCount; i++) {
Chris@60: 	    if (LADSPA_IS_PORT_CONTROL(descriptor->PortDescriptors[i])) {
Chris@60:                 if (LADSPA_IS_PORT_INPUT(descriptor->PortDescriptors[i])) {
Chris@60:                     ++rtd->parameterCount;
Chris@60:                 } else {
Chris@60:                     if (strcmp(descriptor->PortNames[i], "latency") &&
Chris@60:                         strcmp(descriptor->PortNames[i], "_latency")) {
Chris@60:                         ++rtd->controlOutputPortCount;
Chris@60:                         rtd->controlOutputPortNames.push_back
Chris@60:                             (descriptor->PortNames[i]);
Chris@60:                     }
Chris@60:                 }
Chris@60:             } else {
Chris@60:                 if (LADSPA_IS_PORT_INPUT(descriptor->PortDescriptors[i])) {
Chris@60:                     ++rtd->audioInputPortCount;
Chris@60:                 }
Chris@60:             }
Chris@60:         }
Chris@60: 
Chris@0: 	QString identifier = PluginIdentifier::createIdentifier
Chris@0: 	    ("ladspa", soname, descriptor->Label);
Chris@0: 	m_identifiers.push_back(identifier);
Chris@0: 
Chris@60:         m_rtDescriptors[identifier] = rtd;
Chris@60: 
Chris@0: 	++index;
Chris@0:     }
Chris@0: 
Chris@0:     if (DLCLOSE(libraryHandle) != 0) {
Chris@0:         std::cerr << "WARNING: LADSPAPluginFactory::discoverPlugins - can't unload " << libraryHandle << std::endl;
Chris@0:         return;
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::generateFallbackCategories()
Chris@0: {
Chris@0:     std::vector<QString> pluginPath = getPluginPath();
Chris@0:     std::vector<QString> path;
Chris@0: 
Chris@0:     for (size_t i = 0; i < pluginPath.size(); ++i) {
Chris@0: 	if (pluginPath[i].contains("/lib/")) {
Chris@0: 	    QString p(pluginPath[i]);
Chris@0: 	    p.replace("/lib/", "/share/");
Chris@0: 	    path.push_back(p);
Chris@0: //	    std::cerr << "LADSPAPluginFactory::generateFallbackCategories: path element " << p << std::endl;
Chris@0: 	}
Chris@0: 	path.push_back(pluginPath[i]);
Chris@0: //	std::cerr << "LADSPAPluginFactory::generateFallbackCategories: path element " << pluginPath[i] << std::endl;
Chris@0:     }
Chris@0: 
Chris@0:     for (size_t i = 0; i < path.size(); ++i) {
Chris@0: 
Chris@0: 	QDir dir(path[i], "*.cat");
Chris@0: 
Chris@0: //	std::cerr << "LADSPAPluginFactory::generateFallbackCategories: directory " << path[i] << " has " << dir.count() << " .cat files" << std::endl;
Chris@0: 	for (unsigned int j = 0; j < dir.count(); ++j) {
Chris@0: 
Chris@0: 	    QFile file(path[i] + "/" + dir[j]);
Chris@0: 
Chris@0: //	    std::cerr << "LADSPAPluginFactory::generateFallbackCategories: about to open " << (path[i] + "/" + dir[j]) << std::endl;
Chris@0: 
Chris@0: 	    if (file.open(QIODevice::ReadOnly)) {
Chris@0: //		    std::cerr << "...opened" << std::endl;
Chris@0: 		QTextStream stream(&file);
Chris@0: 		QString line;
Chris@0: 
Chris@0: 		while (!stream.atEnd()) {
Chris@0: 		    line = stream.readLine();
Chris@0: //		    std::cerr << "line is: \"" << line << "\"" << std::endl;
Chris@0: 		    QString id = line.section("::", 0, 0);
Chris@0: 		    QString cat = line.section("::", 1, 1);
Chris@0: 		    m_fallbackCategories[id] = cat;
Chris@0: //		    std::cerr << "set id \"" << id << "\" to cat \"" << cat << "\"" << std::endl;
Chris@0: 		}
Chris@0: 	    }
Chris@0: 	}
Chris@0:     }
Chris@0: }    
Chris@0: 
Chris@0: void
Chris@0: LADSPAPluginFactory::generateTaxonomy(QString uri, QString base)
Chris@0: {
Chris@35: #ifdef HAVE_LRDF
Chris@0:     lrdf_uris *uris = lrdf_get_instances(uri.toStdString().c_str());
Chris@0: 
Chris@0:     if (uris != NULL) {
Chris@0: 	for (int i = 0; i < uris->count; ++i) {
Chris@0: 	    m_taxonomy[lrdf_get_uid(uris->items[i])] = base;
Chris@0: 	}
Chris@0: 	lrdf_free_uris(uris);
Chris@0:     }
Chris@0: 
Chris@0:     uris = lrdf_get_subclasses(uri.toStdString().c_str());
Chris@0: 
Chris@0:     if (uris != NULL) {
Chris@0: 	for (int i = 0; i < uris->count; ++i) {
Chris@0: 	    char *label = lrdf_get_label(uris->items[i]);
Chris@0: 	    generateTaxonomy(uris->items[i],
Chris@0: 			     base + (base.length() > 0 ? " > " : "") + label);
Chris@0: 	}
Chris@0: 	lrdf_free_uris(uris);
Chris@0:     }
Chris@0: #endif
Chris@0: }
Chris@0:     
Chris@0: