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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 _FilterByCoefExample_
#define _FilterByCoefExample_
#include <CLAM/Processing.hxx>
#include <CLAM/AudioInPort.hxx>
#include <CLAM/AudioOutPort.hxx>
#include "../Filter/Filter.hxx"
namespace CLAM {
/** \brief Band pass filter defined by direct form coefficients
*
* Example
*/
class FilterByCoefExample: public Processing
{
/** This method returns the name of the object
* @return Char pointer with the name of object
*/
const char *GetClassName() const { return "FilterByCoefExample"; }
/** Ports **/
AudioInPort mInput;
AudioOutPort mOutput;
/** Controls **/
public:
FilterByCoefExample(const Config & config=Config())
:
mInput("Input", this),
mOutput("Output", this)
{
Configure( config );
unsigned N = 11; //filter order + 1
FilterConfig cfg;
cfg.SetAmountOfInputCoefficients(N);
mFilter.Configure( cfg );
//FIR band pass filter coefficients. Order 10. 11 coefficients.
TData b_k[] = {
0.0555, 0.0933, -0.1187, -0.2476, 0.0628, 0.3265, 0.0628, -0.2476, -0.1187,\
0.0933, 0.0555\
};
char bkstr[5];
for(unsigned i=0;i<N;i++)
{
sprintf(bkstr, "b_%i", i);
SendFloatToInControl(mFilter, bkstr, b_k[i]);
}
}
~FilterByCoefExample() {}
bool Do()
{
mFilter.Do( mInput.GetAudio(), mOutput.GetAudio() );
mInput.Consume();
mOutput.Produce();
return true;
}
private:
/** Child processings **/
Filter mFilter;
};
};//namespace CLAM
#endif // _FilterByCoefExample_
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