Resample.h

/*                                                         
** Copyright (C) 2008, 2009 Ricard Marxer <email@ricardmarxer.com>
**                                                                  
** 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 RESAMPLE_H
#define RESAMPLE_H

#include "Typedefs.h"
#include "Debug.h"

#include <samplerate.h>

class Resample{
public:
  enum ResamplingMethod {    
    SINC_BEST_QUALITY       = 0 ,
    SINC_MEDIUM_QUALITY     = 1 ,
    SINC_FASTEST            = 2 ,
    ZERO_ORDER_HOLD         = 3 ,
    LINEAR                  = 4 
  };
  
protected:
  int _inputSize;
  int _outputSize;
  Real _resamplingRatio;
  ResamplingMethod _resamplingMethod;

  SRC_DATA _resampleData;
  
public:
  Resample(int inputSize = 1024, int outputSize = 1024, Real resamplingRatio = 1.0, ResamplingMethod resamplingMethod = SINC_BEST_QUALITY);

  ~Resample();

  void process(const MatrixXR& frames, MatrixXR* resampled);
  
  void setup();
  void reset();

  int inputSize() const;
  
  void setInputSize( int size, bool callSetup = true );

  int outputSize() const;
  
  void setOutputSize( int size, bool callSetup = true );

  Real resamplingRatio() const;

  void setResamplingRatio( Real ratio, bool callSetup = true );

  ResamplingMethod resamplingMethod() const;

  void setResamplingMethod( ResamplingMethod method, bool callSetup = true );

};

#endif  /* RESAMPLE_H */

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