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annotate liboctave/oct-fftw.h @ 8920:eb63fbe60fab

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update copyright notices
author John W. Eaton <jwe@octave.org>
date Sat, 07 Mar 2009 10:41:27 -0500
parents 82be108cc558
children fb933db0c517
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1 /*
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2
8920
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John W. Eaton <jwe@octave.org>
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3 Copyright (C) 2001, 2004, 2005, 2007, 2008 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
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
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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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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 class
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110 OCTAVE_API
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111 octave_float_fftw_planner
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112 {
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113 public:
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114
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115 octave_float_fftw_planner (void);
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116
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117 fftwf_plan create_plan (int dir, const int rank, const dim_vector dims,
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118 octave_idx_type howmany, octave_idx_type stride, octave_idx_type dist,
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119 const FloatComplex *in, FloatComplex *out);
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120
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121 fftwf_plan create_plan (const int rank, const dim_vector dims,
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122 octave_idx_type howmany, octave_idx_type stride, octave_idx_type dist,
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123 const float *in, FloatComplex *out);
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124
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125 enum FftwMethod {
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126 UNKNOWN = -1,
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127 ESTIMATE,
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128 MEASURE,
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129 PATIENT,
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130 EXHAUSTIVE,
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131 HYBRID
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132 };
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133
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134 FftwMethod method (void);
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135
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136 FftwMethod method (FftwMethod _meth);
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137
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138 private:
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139
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140 FftwMethod meth;
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141
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142 // FIXME -- perhaps this should be split into two classes?
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143
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144 // Plan for fft and ifft of complex values
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145 fftwf_plan plan[2];
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146
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147 // dist
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148 octave_idx_type d[2];
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149
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150 // stride
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151 octave_idx_type s[2];
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152
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153 // rank
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154 int r[2];
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155
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156 // howmany
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157 octave_idx_type h[2];
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158
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159 // dims
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160 dim_vector n[2];
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161
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162 bool simd_align[2];
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163 bool inplace[2];
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164
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165 // Plan for fft of real values
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166 fftwf_plan rplan;
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167
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168 // dist
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169 octave_idx_type rd;
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170
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171 // stride
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172 octave_idx_type rs;
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173
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174 // rank
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175 int rr;
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176
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177 // howmany
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178 octave_idx_type rh;
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179
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180 // dims
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181 dim_vector rn;
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182
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183 bool rsimd_align;
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184 };
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185
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186 // FIXME -- maybe octave_fftw_planner should be a singleton object?
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187 extern OCTAVE_API octave_fftw_planner fftw_planner;
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188 extern OCTAVE_API octave_float_fftw_planner float_fftw_planner;
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189
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190 class
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191 OCTAVE_API
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192 octave_fftw
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193 {
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194 public:
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195 static int fft (const double *in, Complex *out, size_t npts,
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196 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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197 static int fft (const Complex *in, Complex *out, size_t npts,
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198 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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199 static int ifft (const Complex *in, Complex *out, size_t npts,
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200 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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201
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202 static int fftNd (const double*, Complex*, const int, const dim_vector &);
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203 static int fftNd (const Complex*, Complex*, const int,
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204 const dim_vector &);
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205 static int ifftNd (const Complex*, Complex*, const int,
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206 const dim_vector &);
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207
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208 static int fft (const float *in, FloatComplex *out, size_t npts,
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209 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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210 static int fft (const FloatComplex *in, FloatComplex *out, size_t npts,
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211 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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212 static int ifft (const FloatComplex *in, FloatComplex *out, size_t npts,
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213 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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214
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215 static int fftNd (const float*, FloatComplex*, const int, const dim_vector &);
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216 static int fftNd (const FloatComplex*, FloatComplex*, const int,
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217 const dim_vector &);
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218 static int ifftNd (const FloatComplex*, FloatComplex*, const int,
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219 const dim_vector &);
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220
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221 private:
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222 octave_fftw ();
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223 octave_fftw (const octave_fftw&);
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224 octave_fftw& operator = (const octave_fftw&);
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225 };
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226
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227 #endif
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228
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229 /*
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230 ;;; Local Variables: ***
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231 ;;; mode: C++ ***
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232 ;;; End: ***
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233 */
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234