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/***************************************************************************
enginevumeter.h - description
-------------------
copyright : (C) 2002 by Tue and Ken Haste Andersen
email :
***************************************************************************/
/***************************************************************************
* *
* 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 ENGINEVUMETER_H
#define ENGINEVUMETER_H
#include "engine/engineobject.h"
// Rate at which the vumeter is updated (using a sample rate of 44100 Hz):
#define VU_UPDATE_RATE 30 // in 1/s, fits to display frame rate
#define PEAK_DURATION 500 // in ms
// SMOOTHING FACTORS
// Must be from 0-1 the lower the factor, the more smoothing that is applied
#define ATTACK_SMOOTHING 1. // .85
#define DECAY_SMOOTHING .1 //.16//.4
class ControlPotmeter;
class ControlProxy;
class EngineVuMeter : public EngineObject {
Q_OBJECT
public:
EngineVuMeter(QString group);
virtual ~EngineVuMeter();
virtual void process(CSAMPLE* pInOut, const int iBufferSize);
void reset();
private:
void doSmooth(CSAMPLE ¤tVolume, CSAMPLE newVolume);
ControlPotmeter* m_ctrlVuMeter;
ControlPotmeter* m_ctrlVuMeterL;
ControlPotmeter* m_ctrlVuMeterR;
CSAMPLE m_fRMSvolumeL;
CSAMPLE m_fRMSvolumeSumL;
CSAMPLE m_fRMSvolumeR;
CSAMPLE m_fRMSvolumeSumR;
int m_iSamplesCalculated;
ControlPotmeter* m_ctrlPeakIndicator;
ControlPotmeter* m_ctrlPeakIndicatorL;
ControlPotmeter* m_ctrlPeakIndicatorR;
int m_peakDurationL;
int m_peakDurationR;
ControlProxy* m_pSampleRate;
};
#endif
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