// file: filter/filter.h
//	

// make sure definitions are made only once
//
#ifndef __ISIP_FILTER
#define __ISIP_FILTER

// isip include files
//
#ifndef __ISIP_INTEGRAL
#include <integral.h>
#endif

// Filter : a class meant to apply a filter function to signal data
//
class Filter {

  //---------------------------------------------------------------------------
  //
  // protected members
  //
  //---------------------------------------------------------------------------
protected:

  // information about the filter function
  //
  long width_d;

  // the actual filter function
  //
  double* data_d;
  
  // debug level
  //
  long debug_level_d;

  logical allocate_cc(long width);
  
  //---------------------------------------------------------------------------
  //
  // public methods
  //
  //---------------------------------------------------------------------------
public:

  // required methods
  //
  unichar* name_cc();
  volatile void error_handler_cc(unichar* method_name, unichar* message);
  logical debug_cc(FILE* fp, unichar* message);
  logical set_debug_cc(long level);  

  // destructor/constructor
  //
  ~Filter();
  Filter();
  Filter(double* data, long width);

  // change filter properties
  //
  logical set_cc(double* data, long width);
  
  // apply the filter to signal data
  //
  logical apply_cc(double* data, long num_samples, long num_channels);
  
  //---------------------------------------------------------------------------
  //
  // private methods
  //
  //---------------------------------------------------------------------------
private:


};

// end of file
//
#endif