annotate plugin/PluginScan.h @ 1246:75aefcc9f07d piper

Use plugin scan results to inform the list requests issued to Piper servers

/* -*- 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.
*/

#ifndef PLUGIN_SCAN_H
#define PLUGIN_SCAN_H

#include <QStringList>
#include <QMutex>
#include <vector>
#include <map>

class KnownPlugins;

class PluginScan
{
public:
    static PluginScan *getInstance();

    void scan();

    bool scanSucceeded() const;
    
    enum PluginType {
	VampPlugin,
	LADSPAPlugin,
	DSSIPlugin
    };
    struct Candidate {
        QString libraryPath;
        QString helperTag;
    };
    QList<Candidate> getCandidateLibrariesFor(PluginType) const;

    QString getStartupFailureReport() const;

private:
    PluginScan();
    ~PluginScan();

    void clear();

    mutable QMutex m_mutex; // while scanning; definitely can't multi-thread this
    
    std::map<QString, KnownPlugins *> m_kp; // tag -> KnownPlugins client
    bool m_succeeded;

    class Logger;
    Logger *m_logger;
};

#endif