annotate plugin/PluginPathSetter.cpp @ 1520:954d0cf29ca7 import-audio-data

Switch the normalisation option in WritableWaveFileModel from normalising on read to normalising on write, so that the saved file is already normalised and therefore can be read again without having to remember to normalise it

/* -*- 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>

#include "system/System.h"
#include "base/Preferences.h"
#include "base/HelperExecPath.h"

QMutex
PluginPathSetter::m_mutex;

PluginPathSetter::Paths
PluginPathSetter::m_defaultPaths;

PluginPathSetter::Paths
PluginPathSetter::m_environmentPaths;

std::map<QString, QString>
PluginPathSetter::m_originalEnvValues;

PluginPathSetter::TypeKeys
PluginPathSetter::m_supportedKeys;

using namespace std;

PluginPathSetter::TypeKeys
PluginPathSetter::getSupportedKeys()
{
    QMutexLocker locker(&m_mutex);

    if (!m_supportedKeys.empty()) {
        return m_supportedKeys;
    }

    TypeKeys keys;
    keys.push_back({ KnownPlugins::VampPlugin, KnownPlugins::FormatNative });
    
    bool inProcess = Preferences::getInstance()->getRunPluginsInProcess();
    HelperExecPath hep(inProcess ?
                       HelperExecPath::NativeArchitectureOnly :
                       HelperExecPath::AllInstalled);
    auto execs = hep.getHelperExecutables("vamp-plugin-load-checker");
    if (execs.size() > 1) {
        keys.push_back({
                KnownPlugins::VampPlugin, KnownPlugins::FormatNonNative32Bit });
    }

    keys.push_back({ KnownPlugins::LADSPAPlugin, KnownPlugins::FormatNative });
    keys.push_back({ KnownPlugins::DSSIPlugin, KnownPlugins::FormatNative });

    m_supportedKeys = keys;
    return keys;
}

// call with mutex held please
PluginPathSetter::Paths
PluginPathSetter::getEnvironmentPathsUncached(const TypeKeys &keys)
{
    Paths paths;

    for (auto k: keys) {

        KnownPlugins kp(k.second);

        auto path = kp.getPathFor(k.first);
        QStringList qPath;
        for (auto s: path) {
            qPath.push_back(QString::fromStdString(s));
        }

        auto var = kp.getPathEnvironmentVariableFor(k.first);
        QString qVar = QString::fromStdString(var);
        
        paths[k] = { qPath, qVar, true };
    }

    return paths;
}

PluginPathSetter::Paths
PluginPathSetter::getDefaultPaths()
{
    TypeKeys keys = getSupportedKeys();
    
    QMutexLocker locker(&m_mutex);

    Paths paths;

    for (auto k: keys) {

        KnownPlugins kp(k.second);

        auto path = kp.getDefaultPathFor(k.first);
        QStringList qPath;
        for (auto s: path) {
            qPath.push_back(QString::fromStdString(s));
        }

        auto var = kp.getPathEnvironmentVariableFor(k.first);
        QString qVar = QString::fromStdString(var);
        
        paths[k] = { qPath, qVar, true };
    }

    return paths;
}

PluginPathSetter::Paths
PluginPathSetter::getEnvironmentPaths()
{
    TypeKeys keys = getSupportedKeys();
    
    QMutexLocker locker(&m_mutex);

    if (!m_environmentPaths.empty()) {
        return m_environmentPaths;
    }
        
    m_environmentPaths = getEnvironmentPathsUncached(keys);
    return m_environmentPaths;
}

QString
PluginPathSetter::getSettingTagFor(TypeKey tk)
{
    string tag = KnownPlugins(tk.second).getTagFor(tk.first);
    if (tk.second == KnownPlugins::FormatNonNative32Bit) {
        tag += "-32";
    }
    return QString::fromStdString(tag);
}

PluginPathSetter::Paths
PluginPathSetter::getPaths()
{
    Paths paths = getEnvironmentPaths();
       
    QSettings settings;
    settings.beginGroup("Plugins");

    for (auto p: paths) {

        TypeKey tk = p.first;

        QString settingTag = getSettingTagFor(tk);

        QStringList directories =
            settings.value(QString("directories-%1").arg(settingTag),
                           p.second.directories)
            .toStringList();
        QString envVariable =
            settings.value(QString("env-variable-%1").arg(settingTag),
                           p.second.envVariable)
            .toString();
        bool useEnvVariable =
            settings.value(QString("use-env-variable-%1").arg(settingTag),
                           p.second.useEnvVariable)
            .toBool();

        string envVarStr = envVariable.toStdString();
        string currentValue;
        (void)getEnvUtf8(envVarStr, currentValue);

        if (currentValue != "" && useEnvVariable) {
            directories = QString::fromStdString(currentValue).split(
#ifdef Q_OS_WIN
               ";"
#else
               ":"
#endif
                );
        }
        
        paths[tk] = { directories, envVariable, useEnvVariable };
    }

    settings.endGroup();

    return paths;
}

void
PluginPathSetter::savePathSettings(Paths paths)
{
    QSettings settings;
    settings.beginGroup("Plugins");

    for (auto p: paths) {
        QString settingTag = getSettingTagFor(p.first);
        settings.setValue(QString("directories-%1").arg(settingTag),
                          p.second.directories);
        settings.setValue(QString("env-variable-%1").arg(settingTag),
                          p.second.envVariable);
        settings.setValue(QString("use-env-variable-%1").arg(settingTag),
                          p.second.useEnvVariable);
    }

    settings.endGroup();
}

QString
PluginPathSetter::getOriginalEnvironmentValue(QString envVariable)
{
    if (m_originalEnvValues.find(envVariable) != m_originalEnvValues.end()) {
        return m_originalEnvValues.at(envVariable);
    } else {
        return QString();
    }
}

void
PluginPathSetter::initialiseEnvironmentVariables()
{
    // 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();
    (void)getEnvironmentPaths();
    
    Paths paths = getPaths();

    for (auto p: paths) {
        QString envVariable = p.second.envVariable;
        string envVarStr = envVariable.toStdString();
        string currentValue;
        getEnvUtf8(envVarStr, currentValue);
        m_originalEnvValues[envVariable] = QString::fromStdString(currentValue);
        if (currentValue != "" && p.second.useEnvVariable) {
            // don't override
            SVDEBUG << "PluginPathSetter: for environment variable "
                    << envVariable << ", useEnvVariable setting is false; "
                    << "leaving current value alone: it is \""
                    << currentValue << "\"" << endl;
            continue;
        }
        QString separator =
#ifdef Q_OS_WIN
            ";"
#else
            ":"
#endif
            ;
        QString proposedValue = p.second.directories.join(separator);
        SVDEBUG << "PluginPathSetter: for environment variable "
                << envVariable << ", useEnvVariable setting is true or "
                << "variable is currently unset; "
                << "changing value from \"" << currentValue
                << "\" to setting preference of \"" << proposedValue
                << "\"" << endl;
        putEnvUtf8(envVarStr, proposedValue.toStdString());
    }
}