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/*
*
*
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef _AudioNormalization_
#define _AudioNormalization_
#include <CLAM/Processing.hxx>
#include <CLAM/AudioInPort.hxx>
#include <CLAM/AudioOutPort.hxx>
#include <CLAM/CLAM_Math.hxx>
namespace CLAM {
/** \brief AudioNormalization
*
* Normalizes the input to -1..1 range checking for the max
*/
class AudioNormalization: public Processing
{
/** This method returns the name of the object
* @return Char pointer with the name of object
*/
const char *GetClassName() const { return "AudioNormalization"; }
/** Ports **/
AudioInPort mInput;
AudioOutPort mOutput;
/** Controls **/
FloatInControl mAudioNormalizationValue;
public:
AudioNormalization(const Config & config=Config())
:
mInput("Input", this),
mOutput("Output", this),
mAudioNormalizationValue("AudioNormalization Value", this),
_max(1.)
{
Configure( config );
mAudioNormalizationValue.SetBounds(0,2);
mAudioNormalizationValue.SetDefaultValue(1.0);
mAudioNormalizationValue.DoControl(1.0);
}
~AudioNormalization() {}
bool Do()
{
bool result = Do( mInput.GetAudio(), mOutput.GetAudio() );
mInput.Consume();
mOutput.Produce();
return result;
}
bool Do(const Audio& in, Audio& out)
{
int size = in.GetSize();
const DataArray& inb = in.GetBuffer();
DataArray& outb = out.GetBuffer();
TData value = mAudioNormalizationValue.GetLastValue();
for (int i=0;i<size;i++)
{
if (fabs(inb[i])>_max) _max = fabs(inb[i]);
outb[i] = inb[i]/_max*fabs(value);
}
return true;
}
private:
TData _max;
};
};//namespace CLAM
#endif // _AudioNormalization_
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