X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=include%2Ffilter.h;h=6ad776792158c2f4d6d7604268a39f2baa4a67fd;hb=ab4a3ba2c1ba9672136b5022897f81fc55d03493;hp=8e0740b982e1bb34dc4592d090fb309c9b8e806c;hpb=03c4bc505de131323cbc70a70bdceda9229269bf;p=ctsim.git

diff --git a/include/filter.h b/include/filter.h
index 8e0740b..6ad7767 100644
--- 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 1.9 2000/07/04 22:21:01 kevin Exp $
+**  $Id: filter.h,v 1.14 2000/07/19 04:33:27 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 +28,18 @@
 #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:
 
@@ -49,10 +61,12 @@ 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 {
@@ -74,20 +88,22 @@ 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, 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);
 
@@ -104,13 +120,13 @@ class SignalFilter {
     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; }
 
@@ -127,15 +143,15 @@ class SignalFilter {
 
     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;
@@ -150,7 +166,10 @@ class SignalFilter {
     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;
@@ -162,9 +181,14 @@ class SignalFilter {
     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);
@@ -172,9 +196,9 @@ class SignalFilter {
     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;
 
@@ -187,5 +211,4 @@ double spatialResponseCalc (double x, double param, int n) const;
 
 };
 
-
 #endif