LowPassPlugin.h

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/***************************************************************************
        LowPassPlugin.h  -  Plugin for simple lowpass filtering
                             -------------------
    begin                : Fri Mar 07 2003
    copyright            : (C) 2003 by Thomas Eschenbacher
    email                : Thomas.Eschenbacher@gmx.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef LOW_PASS_PLUGIN_H
#define LOW_PASS_PLUGIN_H

#include "config.h"

#include <QObject>
#include <QString>
#include <QStringList>

#include "libkwave/Plugin.h"
#include "libkwave/PluginSetupDialog.h"

#include "libgui/FilterPlugin.h"

class QStringList;

namespace Kwave
{

    class KwaveSampleSource;

    class LowPassPlugin: public Kwave::FilterPlugin
    {
        Q_OBJECT

    public:

        LowPassPlugin(QObject *parent, const QVariantList &args);

        virtual ~LowPassPlugin() Q_DECL_OVERRIDE;

        virtual Kwave::PluginSetupDialog *createDialog(QWidget *parent)
            Q_DECL_OVERRIDE;

        virtual Kwave::SampleSource *createFilter(unsigned int tracks)
            Q_DECL_OVERRIDE;

        virtual bool paramsChanged() Q_DECL_OVERRIDE;

        virtual void updateFilter(Kwave::SampleSource *filter,
                                  bool force = false) Q_DECL_OVERRIDE;

        virtual QString actionName() Q_DECL_OVERRIDE;

    protected:

        virtual int interpreteParameters(QStringList &params) Q_DECL_OVERRIDE;

    protected slots:

        void setValue(double frequency);

    private:

        double m_frequency;

        double m_last_freq;
    };
}

#endif /* LOW_PASS_PLUGIN_H */

//***************************************************************************
//***************************************************************************