r127: *** empty log message ***

[ctsim.git] / include / filter.h

diff --git a/include/filter.h b/include/filter.h
index 5512bf890fb4596abfffcee223a795de58ef9048..5f5789b6fa2e857d1271ff042f4f8414b6adbb44 100644 (file)
--- a/include/filter.h
+++ b/include/filter.h
@@ -1,7 +1,33 @@
+/*****************************************************************************
+** FILE IDENTIFICATION
+**
+**     Name:         filter.h
+**      Purpose:      Signal filter header file
+**     Programmer:   Kevin Rosenberg
+**     Date Started: June 2000
+**
+**  This is part of the CTSim program
+**  Copyright (C) 1983-2000 Kevin Rosenberg
+**
+**  $Id: filter.h,v 1.6 2000/07/02 18:21:39 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
+**  published by the Free Software Foundation.
+**
+**  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 FILTER_H
 #define FILTER_H
 
-
 class SignalFilter {
  public:
 
@@ -31,7 +57,7 @@ class SignalFilter {
 
     typedef enum {
        DOMAIN_INVALID,
-       DOMAIN_FREQ,
+       DOMAIN_FREQUENCY,
        DOMAIN_SPATIAL 
     } DomainID;
     
@@ -53,13 +79,13 @@ class SignalFilter {
     static const char FILTER_METHOD_FFT_ZEROPAD_4_STR[]="fft_zeropad4";
     static const char FILTER_METHOD_FFT_ZEROPAD_6_STR[]="fft_zeropad6";
 
-    static const char DOMAIN_FREQ_STR[]=    "freq";
+    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 signalLength, int n, double param, const char* domainName, 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 signalLength, int n, double param, const DomainID domain, const int numIntegral = 0);
 
     SignalFilter (const char* filterName, const char* domainName, double bw, double param, int numIntegral = 0);
 
@@ -68,10 +94,20 @@ 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[], double dx, const int n) const;
+    void filterSignal (const float input[], double output[], double dx, const int n) const;
+
+    static void finiteFourierTransform (const double input[], complex<double> output[], const int n, const int direction);
+
+    void finiteFourierTransform (const double input[], complex<double> output[], const int direction) const;
+
     bool fail(void) const      {return m_fail;}
     const string& failMessage(void) const {return m_failMessage;}
 
@@ -92,10 +128,15 @@ class SignalFilter {
 
  private:
     double m_bw;
-    int m_nPoints;
+    int m_nFilterPoints;
+    int m_nSignalPoints;
+    double m_signalLength;
     double m_xmin;
     double m_xmax;
     double* m_vecFilter;
+    double* m_vecFourierCosTable;
+    double* m_vecFourierSinTable;
+
     bool m_fail;
     string m_failMessage;
     string m_nameFilter;
@@ -107,12 +148,14 @@ class SignalFilter {
     double m_filterParam;
     int m_numIntegral;
 
-    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 xmin, double xmax, int n, double param, const DomainID domain, const int numInt);
 
 double spatialResponseCalc (double x, double param, int n) const;