** This is part of the CTSim program
** Copyright (C) 1983-2000 Kevin Rosenberg
**
-** $Id: filter.h,v 1.9 2000/07/04 22:21:01 kevin Exp $
+** $Id: filter.h,v 1.15 2000/07/20 11:17:31 kevin Exp $
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License (version 2) as
#ifndef FILTER_H
#define FILTER_H
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#ifdef HAVE_FFTW
+#include <fftw.h>
+#include <rfftw.h>
+#endif
+
+#include <complex>
+
+
class SignalFilter {
public:
FILTER_METHOD_INVALID,
FILTER_METHOD_CONVOLUTION,
FILTER_METHOD_FOURIER,
+ FILTER_METHOD_FOURIER_TABLE,
FILTER_METHOD_FFT,
- FILTER_METHOD_FFT_ZEROPAD_2,
- FILTER_METHOD_FFT_ZEROPAD_4,
- FILTER_METHOD_FFT_ZEROPAD_6
+#if HAVE_FFTW
+ FILTER_METHOD_FFTW,
+ FILTER_METHOD_RFFTW,
+#endif
} FilterMethodID;
typedef enum {
DOMAIN_SPATIAL
} DomainID;
- static const char FILTER_ABS_BANDLIMIT_STR[]= "abs_bandlimit";
- static const char FILTER_ABS_SINC_STR[]= "abs_sinc";
- static const char FILTER_ABS_COS_STR[]= "abs_cos";
- static const char FILTER_ABS_HAMMING_STR[]= "abs_hamming";
- static const char FILTER_SHEPP_STR[]= "shepp";
- static const char FILTER_BANDLIMIT_STR[]= "bandlimit";
- static const char FILTER_SINC_STR[]= "sinc";
- static const char FILTER_COS_STR[]= "cos";
- static const char FILTER_HAMMING_STR[]= "hamming";
- static const char FILTER_TRIANGLE_STR[]= "triangle";
+ // Filters
+ static const char FILTER_ABS_BANDLIMIT_STR[];
+ static const char FILTER_ABS_SINC_STR[];
+ static const char FILTER_ABS_COS_STR[];
+ static const char FILTER_ABS_HAMMING_STR[];
+ static const char FILTER_SHEPP_STR[];
+ static const char FILTER_BANDLIMIT_STR[];
+ static const char FILTER_SINC_STR[];
+ static const char FILTER_COS_STR[];
+ static const char FILTER_HAMMING_STR[];
+ static const char FILTER_TRIANGLE_STR[];
+
+ static const char FILTER_ABS_BANDLIMIT_TITLE_STR[];
+ static const char FILTER_ABS_SINC_TITLE_STR[];
+ static const char FILTER_ABS_COS_TITLE_STR[];
+ static const char FILTER_ABS_HAMMING_TITLE_STR[];
+ static const char FILTER_SHEPP_TITLE_STR[];
+ static const char FILTER_BANDLIMIT_TITLE_STR[];
+ static const char FILTER_SINC_TITLE_STR[];
+ static const char FILTER_COS_TITLE_STR[];
+ static const char FILTER_HAMMING_TITLE_STR[];
+ static const char FILTER_TRIANGLE_TITLE_STR[];
- static const char FILTER_METHOD_CONVOLUTION_STR[]= "convolution";
- static const char FILTER_METHOD_FOURIER_STR[]= "fourier";
- static const char FILTER_METHOD_FFT_STR[]= "fft";
- static const char FILTER_METHOD_FFT_ZEROPAD_2_STR[]="fft_zeropad2";
- static const char FILTER_METHOD_FFT_ZEROPAD_4_STR[]="fft_zeropad4";
- static const char FILTER_METHOD_FFT_ZEROPAD_6_STR[]="fft_zeropad6";
+ // Filter Methods
+ static const char FILTER_METHOD_CONVOLUTION_STR[];
+ static const char FILTER_METHOD_FOURIER_STR[];
+ static const char FILTER_METHOD_FOURIER_TABLE_STR[];
+ static const char FILTER_METHOD_FFT_STR[];
+#if HAVE_FFTW
+ static const char FILTER_METHOD_FFTW_STR[];
+ static const char FILTER_METHOD_RFFTW_STR[];
+#endif
- static const char DOMAIN_FREQUENCY_STR[]= "frequency";
- static const char DOMAIN_SPATIAL_STR[]= "spatial";
+ static const char FILTER_METHOD_CONVOLUTION_TITLE_STR[];
+ static const char FILTER_METHOD_FOURIER_TITLE_STR[];
+ static const char FILTER_METHOD_FOURIER_TABLE_TITLE_STR[];
+ static const char FILTER_METHOD_FFT_TITLE_STR[];
+#if HAVE_FFTW
+ static const char FILTER_METHOD_FFTW_TITLESTR[];
+ static const char FILTER_METHOD_RFFTW_TITLE_STR[];
+#endif
+
+ // Domains
+ static const char DOMAIN_FREQUENCY_STR[];
+ static const char DOMAIN_SPATIAL_STR[];
+
+ static const char DOMAIN_FREQUENCY_TITLE_STR[];
+ static const char DOMAIN_SPATIAL_TITLE_STR[];
- SignalFilter (const char* filterName, const char* filterMethodName,double bw, double signalIncrement, int n, double param, const char* domainName, const int numIntegral = 0);
+ SignalFilter (const char* filterName, const char* filterMethodName,double bw, double signalIncrement, int n, double param, const char* domainName, const int zeropad = 0, const int preinterpolationFactor = 1);
- SignalFilter (const FilterID filt_type, FilterMethodID filterMethodID, double bw, double signalIncrement, int n, double param, const DomainID domain, const int numIntegral = 0);
+ SignalFilter (const FilterID filt_type, FilterMethodID filterMethodID, double bw, double signalIncrement, int n, double param, const DomainID domain, const int zeropad = 0, const int preinterpolationFactor = 1);
- SignalFilter (const char* filterName, const char* domainName, double bw, double param, int numIntegral = 0);
+ SignalFilter (const char* filterName, const char* domainName, double bw, double param);
~SignalFilter (void);
void filterSignal (const double input[], double output[]) const;
void filterSignal (const float input[], double output[]) const;
- static void finiteFourierTransform (const float input[], complex<double> output[], const int n, const int direction);
-
+ static void finiteFourierTransform (const double input[], complex<double> output[], const int n, const int direction);
static void finiteFourierTransform (const complex<double> input[], complex<double> output[], const int n, const int direction);
+ static void finiteFourierTransform (const complex<double> input[], double output[], const int n, const int direction);
- void finiteFourierTransform (const float input[], complex<double> output[], const int direction) const;
-
+ void finiteFourierTransform (const double input[], complex<double> output[], const int direction) const;
void finiteFourierTransform (const complex<double> input[], complex<double> output[], const int direction) const;
+ void finiteFourierTransform (const complex<double> input[], double output[], const int direction) const;
void setTraceLevel (int traceLevel) {m_traceLevel = traceLevel; }
double response (double x);
- static double spatialResponse (FilterID fType, double bw, double x, double param, int nIntegral = 0);
+ static double spatialResponse (FilterID fType, double bw, double x, double param);
static double frequencyResponse (FilterID fType, double bw, double u, double param);
- static double spatialResponseCalc (FilterID fType, double bw, double x, double param, int n);
-
static double spatialResponseAnalytic (FilterID fType, double bw, double x, double param);
- static void dotProduct (const double v1[], const complex<double> v2[], complex<double> output[], const int n);
+ static double spatialResponseCalc (FilterID fType, double bw, double x, double param, int nIntegral);
+
+ static void setNumIntegral(int nIntegral) {N_INTEGRAL = nIntegral;}
private:
double m_bw;
double* m_vecFourierSinTable;
complex<double>* m_complexVecFilter;
#ifdef HAVE_FFTW
- fftw_plan m_planForward, m_planBackward;
+ fftw_real* m_vecRealFftInput, *m_vecRealFftSignal;
+ rfftw_plan m_realPlanForward, m_realPlanBackward;
+ fftw_complex* m_vecComplexFftInput, *m_vecComplexFftSignal;
+ fftw_plan m_complexPlanForward, m_complexPlanBackward;
#endif
bool m_fail;
FilterMethodID m_idFilterMethod;
DomainID m_idDomain;
double m_filterParam;
- int m_numIntegral;
int m_traceLevel;
+ int m_zeropad;
+ int m_nOutputPoints;
+ int m_preinterpolationFactor;
+ static int N_INTEGRAL;
+
+ static const bool haveAnalyticSpatial (const FilterID filterID);
static const FilterID convertFilterNameToID (const char* filterName);
static const char* convertFilterIDToName (const FilterID filterID);
static const FilterMethodID convertFilterMethodNameToID (const char* filterMethodName);
static const DomainID convertDomainNameToID (const char* domainName);
static const char* convertDomainIDToName (const DomainID domainID);
- void init (const FilterID filt_type, const FilterMethodID filterMethod, double bw, double signalIncrement, int n, double param, const DomainID domain, const int numInt);
+ void init (const FilterID filt_type, const FilterMethodID filterMethod, double bw, double signalIncrement, int n, double param, const DomainID domain, const int zeropad, const int preInterpScale);
-double spatialResponseCalc (double x, double param, int n) const;
+ double spatialResponseCalc (double x, double param) const;
double spatialResponseAnalytic (double x, double param) const;
};
-
#endif