Mercurial > hg > svcore
diff plugin/PluginPathSetter.cpp @ 1472:5d7057af0c68 plugin-path-config
Add class to get/set/remember the plugin path for each plugin type
author | Chris Cannam |
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date | Fri, 25 May 2018 16:04:42 +0100 |
parents | |
children | f52bf66b9096 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/plugin/PluginPathSetter.cpp Fri May 25 16:04:42 2018 +0100 @@ -0,0 +1,168 @@ +/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ + +/* + Sonic Visualiser + An audio file viewer and annotation editor. + Centre for Digital Music, Queen Mary, University of London. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. See the file + COPYING included with this distribution for more information. +*/ + +#include "PluginPathSetter.h" + +#include <vamp-hostsdk/PluginHostAdapter.h> + +#include "RealTimePluginFactory.h" +#include "LADSPAPluginFactory.h" +#include "DSSIPluginFactory.h" + +#include <QSettings> +#include <QMutexLocker> + +QMutex +PluginPathSetter::m_mutex; + +PluginPathSetter::Paths +PluginPathSetter::m_defaultPaths; + +PluginPathSetter::Paths +PluginPathSetter::getDefaultPaths() +{ + QMutexLocker locker(&m_mutex); + + if (!m_defaultPaths.empty()) { + return m_defaultPaths; + } + + Paths paths; + + auto vampPath = Vamp::PluginHostAdapter::getPluginPath(); + + QStringList qVampPath; + for (auto s: vampPath) { + qVampPath.push_back(QString::fromStdString(s)); + } + paths["Vamp"] = { qVampPath, "VAMP_PATH", true }; + + auto dssiPath = DSSIPluginFactory::getPluginPath(); + + QStringList qDssiPath; + for (auto s: dssiPath) { + qDssiPath.push_back(s); + } + paths["DSSI"] = { qDssiPath, "DSSI_PATH", true }; + + auto ladspaPath = LADSPAPluginFactory::getPluginPath(); + + QStringList qLadspaPath; + for (auto s: ladspaPath) { + qLadspaPath.push_back(s); + } + paths["LADSPA"] = { qLadspaPath, "LADSPA_PATH", true }; + + m_defaultPaths = paths; + return m_defaultPaths; +} + +PluginPathSetter::Paths +PluginPathSetter::getPaths() +{ + Paths paths = getDefaultPaths(); + + QSettings settings; + settings.beginGroup("Plugins"); + + for (auto p: paths) { + + QString tag = p.first; + + QStringList directories = + settings.value(QString("directories-%1").arg(tag), + p.second.directories) + .toStringList(); + QString envVariable = + settings.value(QString("env-variable-%1").arg(tag), + p.second.envVariable) + .toString(); + bool useEnvVariable = + settings.value(QString("use-env-variable-%1").arg(tag), + p.second.useEnvVariable) + .toBool(); + std::string envVarStr = envVariable.toStdString(); + + QString currentValue = qEnvironmentVariable(envVarStr.c_str()); + if (currentValue != QString() && useEnvVariable) { + directories = currentValue.split( +#ifdef Q_OS_WIN + ";" +#else + ":" +#endif + ); + } + + paths[tag] = { directories, envVariable, useEnvVariable }; + } + + settings.endGroup(); + + return paths; +} + +void +PluginPathSetter::savePathSettings(Paths paths) +{ + QSettings settings; + settings.beginGroup("Plugins"); + + for (auto p: paths) { + QString tag = p.first; + settings.setValue(QString("directories-%1").arg(tag), + p.second.directories); + settings.setValue(QString("env-variable-%1").arg(tag), + p.second.envVariable); + settings.setValue(QString("use-env-variable-%1").arg(tag), + p.second.useEnvVariable); + } + + settings.endGroup(); +} + +void +PluginPathSetter::setEnvironmentVariables() +{ + // Set the relevant environment variables from user configuration, + // so that later lookups through the standard APIs will follow the + // same paths as we have in the user config + + // First ensure the default paths have been recorded for later, so + // we don't erroneously re-read them from the environment + // variables we've just set + (void)getDefaultPaths(); + + Paths paths = getPaths(); + + for (auto p: paths) { + QString envVariable = p.second.envVariable; + std::string envVarStr = envVariable.toStdString(); + QString currentValue = qEnvironmentVariable(envVarStr.c_str()); + if (currentValue != QString() && p.second.useEnvVariable) { + // don't override + continue; + } + QString separator = +#ifdef Q_OS_WIN + ";" +#else + ":" +#endif + ; + QString proposedValue = p.second.directories.join(separator); + qputenv(envVarStr.c_str(), proposedValue.toUtf8()); + } +} +