Traverso/cvs/traverso/src/plugins/native/CorrelationMeter.h

/*
Copyright (C) 2006 Remon Sijrier

This file is part of Traverso

Traverso 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.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.

$Id: CorrelationMeter.h,v 1.2 2008/02/07 11:46:09 n_doebelin Exp $
*/


#ifndef CORRELATION_METER_H
#define CORRELATION_METER_H

#include "Plugin.h"
#include "defines.h"
#include <RingBufferNPT.h>
#include <QObject>

class AudioBus;

struct CorrelationMeterData
{
        float   r;
        float   levelLeft;
        float   levelRight;
};

class CorrelationMeter : public Plugin
{
        Q_OBJECT

public:
        CorrelationMeter();
        ~CorrelationMeter();

        int init();
        QDomNode get_state(QDomDocument doc);
        int set_state(const QDomNode & node );
        void process(AudioBus* bus, unsigned long nframes);
        QString get_name();
        
        int get_data(float& r, float& direction);

private:
        RingBufferNPT<CorrelationMeterData>*    m_databuffer;
        CorrelationMeterData                    m_history;
        float                                   m_fract;
        int                                     m_bufferreadouts;
        
private slots:
        void calculate_fract();


};


#endif
 

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