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1 /* |
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2 |
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3 Copyright (C) 2001, 2004, 2005, 2007 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 3 of the License, or (at your |
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10 option) any later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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23 #if !defined (octave_oct_fftw_h) |
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24 #define octave_oct_fftw_h 1 |
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25 |
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26 #include <cstddef> |
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27 #include <fftw3.h> |
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28 |
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29 #include "oct-cmplx.h" |
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30 #include "dim-vector.h" |
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31 |
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32 class |
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33 OCTAVE_API |
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34 octave_fftw_planner |
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35 { |
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36 public: |
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37 |
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38 octave_fftw_planner (void); |
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39 |
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40 fftw_plan create_plan (int dir, const int rank, const dim_vector dims, |
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41 octave_idx_type howmany, octave_idx_type stride, octave_idx_type dist, |
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42 const Complex *in, Complex *out); |
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43 |
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44 fftw_plan create_plan (const int rank, const dim_vector dims, |
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45 octave_idx_type howmany, octave_idx_type stride, octave_idx_type dist, |
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46 const double *in, Complex *out); |
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47 |
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48 enum FftwMethod { |
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49 UNKNOWN = -1, |
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50 ESTIMATE, |
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51 MEASURE, |
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52 PATIENT, |
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53 EXHAUSTIVE, |
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54 HYBRID |
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55 }; |
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56 |
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57 FftwMethod method (void); |
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58 |
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59 FftwMethod method (FftwMethod _meth); |
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60 |
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61 private: |
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62 |
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63 FftwMethod meth; |
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64 |
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65 // FIXME -- perhaps this should be split into two classes? |
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66 |
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67 // Plan for fft and ifft of complex values |
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68 fftw_plan plan[2]; |
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69 |
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70 // dist |
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71 octave_idx_type d[2]; |
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72 |
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73 // stride |
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74 octave_idx_type s[2]; |
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75 |
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76 // rank |
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77 int r[2]; |
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78 |
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79 // howmany |
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80 octave_idx_type h[2]; |
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81 |
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82 // dims |
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83 dim_vector n[2]; |
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84 |
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85 bool simd_align[2]; |
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86 bool inplace[2]; |
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87 |
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88 // Plan for fft of real values |
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89 fftw_plan rplan; |
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90 |
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91 // dist |
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92 octave_idx_type rd; |
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93 |
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94 // stride |
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95 octave_idx_type rs; |
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96 |
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97 // rank |
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98 int rr; |
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99 |
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100 // howmany |
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101 octave_idx_type rh; |
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102 |
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103 // dims |
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104 dim_vector rn; |
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105 |
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106 bool rsimd_align; |
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107 }; |
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108 |
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109 // FIXME -- maybe octave_fftw_planner should be a singleton object? |
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110 extern OCTAVE_API octave_fftw_planner fftw_planner; |
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111 |
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112 class |
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113 OCTAVE_API |
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114 octave_fftw |
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115 { |
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116 public: |
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117 static int fft (const double *in, Complex *out, size_t npts, |
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118 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1); |
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119 static int fft (const Complex *in, Complex *out, size_t npts, |
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120 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1); |
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121 static int ifft (const Complex *in, Complex *out, size_t npts, |
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122 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1); |
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123 |
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124 static int fftNd (const double*, Complex*, const int, const dim_vector &); |
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125 static int fftNd (const Complex*, Complex*, const int, |
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126 const dim_vector &); |
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127 static int ifftNd (const Complex*, Complex*, const int, |
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128 const dim_vector &); |
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129 |
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130 private: |
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131 octave_fftw (); |
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132 octave_fftw (const octave_fftw&); |
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133 octave_fftw& operator = (const octave_fftw&); |
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134 }; |
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135 |
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136 #endif |
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137 |
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138 /* |
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139 ;;; Local Variables: *** |
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140 ;;; mode: C++ *** |
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141 ;;; End: *** |
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142 */ |
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143 |
