X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=include%2Ffilter.h;h=19266a0edbce9e909d39bb127436f7de8a86fa68;hb=00bead9fe7ab835c1584eac4ab586cc56742eaf3;hp=b544a1f2132ac16671cbab6bde3e6c320cebcbbf;hpb=2d39e823ba389fc68e5317c422b55be006094252;p=ctsim.git diff --git a/include/filter.h b/include/filter.h index b544a1f..19266a0 100644 --- 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 1.5 2000/06/30 02:03:27 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 +** 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: @@ -18,17 +44,50 @@ class SignalFilter { FILTER_ABS_COSINE, FILTER_SHEPP } FilterID; - + + typedef enum { + FILTER_METHOD_INVALID, + FILTER_METHOD_CONVOLUTION, + FILTER_METHOD_FOURIER, + FILTER_METHOD_FFT, + FILTER_METHOD_FFT_ZEROPAD_2, + FILTER_METHOD_FFT_ZEROPAD_4, + FILTER_METHOD_FFT_ZEROPAD_6 + } FilterMethodID; + typedef enum { DOMAIN_INVALID, - DOMAIN_FREQ, + DOMAIN_FREQUENCY, 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"; + + 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"; + + 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, double bw, double xmin, double xmax, int n, double param, const char* domainName, const int numInt); + 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, double bw, double xmin, double xmax, int n, double param, const DomainID domain, const int numInt); + SignalFilter (const char* filterName, const char* domainName, double bw, double param, int numIntegral = 0); ~SignalFilter (void); @@ -40,19 +99,23 @@ class SignalFilter { double convolve (const float f[], const double dx, const int n, const int np) const; bool fail(void) const {return m_fail;} + const string& failMessage(void) const {return m_failMessage;} + const string& nameFilter(void) const { return m_nameFilter;} const string& nameDomain(void) const { return m_nameDomain;} const FilterID idFilter(void) const { return m_idFilter;} const DomainID idDomain(void) const { return m_idDomain;} - static double response (const char* const FilterName, const char* const DomainName, double bw, double x, double param); + double response (double x); + + static double spatialResponse (FilterID fType, double bw, double x, double param, int nIntegral = 0); + + 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 double frequencyResponse (FilterID fType, double bw, double u, double param); - private: double m_bw; int m_nPoints; @@ -60,24 +123,15 @@ class SignalFilter { double m_xmax; double* m_vecFilter; bool m_fail; + string m_failMessage; string m_nameFilter; + string m_nameFilterMethod; string m_nameDomain; FilterID m_idFilter; + FilterMethodID m_idFilterMethod; DomainID m_idDomain; - - 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"; - - static const char DOMAIN_FREQ_STR[]= "freq"; - static const char DOMAIN_SPATIAL_STR[]= "spatial"; + double m_filterParam; + int m_numIntegral; static FilterID convertFilterNameToID (const char* filterName); static const char* convertFilterIDToName (const FilterID filterID);