r138: *** empty log message ***

[ctsim.git] / include / filter.h

diff --git a/include/filter.h b/include/filter.h
index 19266a0edbce9e909d39bb127436f7de8a86fa68..9ee7390a4acd83c96bd9a72b7f9990fbfe7bede9 100644 (file)
--- a/include/filter.h
+++ b/include/filter.h
@@ -9,7 +9,7 @@
 **  This is part of the CTSim program
 **  Copyright (C) 1983-2000 Kevin Rosenberg
 **
-**  $Id: filter.h,v 1.5 2000/06/30 02:03:27 kevin Exp $
+**  $Id: filter.h,v 1.12 2000/07/07 15:30:59 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
@@ -28,6 +28,7 @@
 #ifndef FILTER_H
 #define FILTER_H
 
+
 class SignalFilter {
  public:
 
@@ -49,10 +50,12 @@ class SignalFilter {
        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 {
@@ -74,18 +77,20 @@ class SignalFilter {
     
     static const char FILTER_METHOD_CONVOLUTION_STR[]=  "convolution";
     static const char FILTER_METHOD_FOURIER_STR[]=      "fourier";
+    static const char FILTER_METHOD_FOURIER_TABLE_STR[]="fourier_table";
     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";
+#if HAVE_FFTW
+    static const char FILTER_METHOD_FFTW_STR[]=         "fftw";
+    static const char FILTER_METHOD_RFFTW_STR[]=        "rfftw";
+#endif
 
-    static const char DOMAIN_FREQUENCY_STR[]=    "frequency";
-    static const char DOMAIN_SPATIAL_STR[]= "spatial";
+    static const char DOMAIN_FREQUENCY_STR[]="frequency";
+    static const char DOMAIN_SPATIAL_STR[]="spatial";
 
 
-    SignalFilter (const char* filterName, double bw, double xmin, double xmax, 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 numIntegral = 0);
 
-    SignalFilter (const FilterID filt_type, double bw, double xmin, double xmax, 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 numIntegral = 0);
 
     SignalFilter (const char* filterName, const char* domainName, double bw, double param, int numIntegral = 0);
 
@@ -94,10 +99,26 @@ class SignalFilter {
     double* getFilter (void) const
       { return m_vecFilter; }
 
+    int getNFilterPoints (void) const
+       { return m_nFilterPoints; }
+
     double convolve (const double f[], const double dx, const int n, const int np) const;
 
     double convolve (const float f[], const double dx, const int n, const int np) const;
 
+    void filterSignal (const double input[], double output[]) const;
+    void filterSignal (const float input[], double output[]) const;
+
+    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 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; }
+
     bool fail(void) const      {return m_fail;}
     const string& failMessage(void) const {return m_failMessage;}
 
@@ -105,6 +126,9 @@ class SignalFilter {
     const string& nameDomain(void) const       { return m_nameDomain;}
     const FilterID idFilter(void) const        { return m_idFilter;}
     const DomainID idDomain(void) const        { return m_idDomain;}
+    const double getFilterMin(void) const {return m_filterMin;}
+    const double getFilterMax(void) const {return m_filterMax;}
+    const double getFilterIncrement(void) const {return m_filterInc;}
 
     double response (double x);
 
@@ -118,10 +142,23 @@ class SignalFilter {
 
  private:
     double m_bw;
-    int m_nPoints;
-    double m_xmin;
-    double m_xmax;
+    int m_nFilterPoints;
+    int m_nSignalPoints;
+    double m_signalInc;
+    double m_filterMin;
+    double m_filterMax;
+    double m_filterInc;
     double* m_vecFilter;
+    double* m_vecFourierCosTable;
+    double* m_vecFourierSinTable;
+    complex<double>* m_complexVecFilter;
+#ifdef HAVE_FFTW
+    fftw_real* m_vecRealFftInput;
+    rfftw_plan m_realPlanForward, m_realPlanBackward;
+    fftw_complex* m_vecComplexFftInput;
+    fftw_plan m_complexPlanForward, m_complexPlanBackward;
+#endif
+
     bool m_fail;
     string m_failMessage;
     string m_nameFilter;
@@ -132,13 +169,17 @@ class SignalFilter {
     DomainID m_idDomain;
     double m_filterParam;
     int m_numIntegral;
+    int m_traceLevel;
+    int m_zeropad;
 
-    static FilterID convertFilterNameToID (const char* filterName);
+    static const FilterID convertFilterNameToID (const char* filterName);
     static const char* convertFilterIDToName (const FilterID filterID);
+    static const FilterMethodID convertFilterMethodNameToID (const char* filterMethodName);
+    static const char* convertFilterMethodIDToName (const FilterMethodID filterMethodID);
     static const DomainID convertDomainNameToID (const char* domainName);
     static const char* convertDomainIDToName (const DomainID domainID);
 
-    void init (const FilterID filt_type, double bw, double xmin, double xmax, 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 numInt);
 
 double spatialResponseCalc (double x, double param, int n) const;