view base/PlayParameters.h @ 492:23945cdd7161

* Update RDF query stuff again so as to set up a temporary datastore
  each time we want to query over an rdf file, instead of using rasqal
  against the file.  Seems the only way to avoid threading and storage
  management issues when trying to load from a single-source file and
  perform queries against our main datastore at the same time.  Maybe.

/* -*- 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 file copyright 2006 Chris Cannam.
    
    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 _PLAY_PARAMETERS_H_
#define _PLAY_PARAMETERS_H_

#include <QObject>

#include "XmlExportable.h"

class PlayParameters : public QObject, public XmlExportable
{
    Q_OBJECT

public:
    PlayParameters() : m_playMuted(false), m_playPan(0.0), m_playGain(1.0) { }

    virtual bool isPlayMuted() const { return m_playMuted; }
    virtual bool isPlayAudible() const { return !m_playMuted; }
    virtual float getPlayPan() const { return m_playPan; } // -1.0 -> 1.0
    virtual float getPlayGain() const { return m_playGain; }

    virtual QString getPlayPluginId() const { return m_playPluginId; } 
    virtual QString getPlayPluginConfiguration() const { return m_playPluginConfiguration; }

    virtual void copyFrom(const PlayParameters *);

    virtual void toXml(QTextStream &stream,
                       QString indent = "",
                       QString extraAttributes = "") const;

public slots:
    virtual void setPlayMuted(bool muted);
    virtual void setPlayAudible(bool nonMuted);
    virtual void setPlayPan(float pan);
    virtual void setPlayGain(float gain);
    virtual void setPlayPluginId(QString id);
    virtual void setPlayPluginConfiguration(QString configuration);

signals:
    void playParametersChanged();
    void playMutedChanged(bool);
    void playAudibleChanged(bool);
    void playPanChanged(float);
    void playGainChanged(float);
    void playPluginIdChanged(QString);
    void playPluginConfigurationChanged(QString);

protected:
    bool m_playMuted;
    float m_playPan;
    float m_playGain;
    QString m_playPluginId;
    QString m_playPluginConfiguration;

private:
    PlayParameters(const PlayParameters &);
    PlayParameters &operator=(const PlayParameters &);
};

#endif