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1 /* |
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2 |
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3 This file is part of Octave. |
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4 |
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5 Octave is free software; you can redistribute it and/or modify it |
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6 under the terms of the GNU General Public License as published by the |
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7 Free Software Foundation; either version 2, or (at your option) any |
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8 later version. |
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9 |
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10 Octave is distributed in the hope that it will be useful, but WITHOUT |
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11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 for more details. |
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14 |
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15 You should have received a copy of the GNU General Public License |
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16 along with Octave; see the file COPYING. If not, write to the Free |
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17 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 02110-1301, USA. |
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19 |
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20 */ |
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21 |
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22 #if !defined (octave_oct_fftw_h) |
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23 #define octave_oct_fftw_h 1 |
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24 |
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25 #include <cstddef> |
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26 #include <fftw3.h> |
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27 |
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28 #include "oct-cmplx.h" |
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29 #include "dim-vector.h" |
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30 |
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31 class |
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32 OCTAVE_API |
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33 octave_fftw_planner |
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34 { |
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35 public: |
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36 |
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37 octave_fftw_planner (void); |
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38 |
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39 fftw_plan create_plan (int dir, const int rank, const dim_vector dims, |
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40 octave_idx_type howmany, octave_idx_type stride, octave_idx_type dist, |
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41 const Complex *in, Complex *out); |
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42 |
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43 fftw_plan create_plan (const int rank, const dim_vector dims, |
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44 octave_idx_type howmany, octave_idx_type stride, octave_idx_type dist, |
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45 const double *in, Complex *out); |
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46 |
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47 enum FftwMethod { |
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48 UNKNOWN = -1, |
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49 ESTIMATE, |
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50 MEASURE, |
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51 PATIENT, |
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52 EXHAUSTIVE, |
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53 HYBRID |
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54 }; |
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55 |
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56 FftwMethod method (void); |
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57 |
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58 FftwMethod method (FftwMethod _meth); |
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59 |
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60 private: |
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61 |
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62 FftwMethod meth; |
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63 |
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64 // FIXME -- perhaps this should be split into two classes? |
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65 |
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66 // Plan for fft and ifft of complex values |
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67 fftw_plan plan[2]; |
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68 |
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69 // dist |
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70 octave_idx_type d[2]; |
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71 |
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72 // stride |
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73 octave_idx_type s[2]; |
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74 |
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75 // rank |
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76 int r[2]; |
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77 |
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78 // howmany |
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79 octave_idx_type h[2]; |
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80 |
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81 // dims |
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82 dim_vector n[2]; |
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83 |
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84 bool simd_align[2]; |
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85 bool inplace[2]; |
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86 |
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87 // Plan for fft of real values |
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88 fftw_plan rplan; |
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89 |
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90 // dist |
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91 octave_idx_type rd; |
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92 |
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93 // stride |
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94 octave_idx_type rs; |
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95 |
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96 // rank |
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97 int rr; |
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98 |
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99 // howmany |
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100 octave_idx_type rh; |
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101 |
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102 // dims |
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103 dim_vector rn; |
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104 |
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105 bool rsimd_align; |
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106 }; |
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107 |
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108 // FIXME -- maybe octave_fftw_planner should be a singleton object? |
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109 extern OCTAVE_API octave_fftw_planner fftw_planner; |
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110 |
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111 class |
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112 octave_fftw |
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113 { |
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114 public: |
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115 static int fft (const double *in, Complex *out, size_t npts, |
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116 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1); |
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117 static int fft (const Complex *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 ifft (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 |
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122 static int fftNd (const double*, Complex*, const int, const dim_vector &); |
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123 static int fftNd (const Complex*, Complex*, const int, |
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124 const dim_vector &); |
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125 static int ifftNd (const Complex*, Complex*, const int, |
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126 const dim_vector &); |
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127 |
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128 private: |
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129 octave_fftw (); |
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130 octave_fftw (const octave_fftw&); |
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131 octave_fftw& operator = (const octave_fftw&); |
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132 }; |
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133 |
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134 #endif |
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135 |
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136 /* |
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137 ;;; Local Variables: *** |
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138 ;;; mode: C++ *** |
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139 ;;; End: *** |
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140 */ |
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141 |
