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annotate liboctave/oct-fftw.h @ 12747:901d466ee55a stable release-3-4-1

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Version 3.4.1 released. * configure.ac (AC_INIT): Version is now 3.4.1. (OCTAVE_API_VERSION_NUMBER): Now 45. (OCTAVE_RELEASE_DATE): Now 2011-06-15.
author John W. Eaton <jwe@octave.org>
date Wed, 15 Jun 2011 10:35:37 -0400
parents f4689107dd8c
children 7dd7cccf0757
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1 /*
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2
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3 Copyright (C) 2001-2011 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
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28 #if defined (HAVE_FFTW3_H)
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29 #include <fftw3.h>
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30 #endif
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31
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32 #include "oct-cmplx.h"
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33 #include "dim-vector.h"
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34
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35 #if defined (HAVE_FFTW)
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36
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37 class
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38 OCTAVE_API
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39 octave_fftw_planner
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40 {
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41 protected:
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42
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43 octave_fftw_planner (void);
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44
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45 public:
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46
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47 ~octave_fftw_planner (void) { }
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49 enum FftwMethod
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50 {
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51 UNKNOWN = -1,
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52 ESTIMATE,
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53 MEASURE,
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54 PATIENT,
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55 EXHAUSTIVE,
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56 HYBRID
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57 };
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58
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59 static bool instance_ok (void);
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60
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61 static fftw_plan
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62 create_plan (int dir, const int rank, const dim_vector dims,
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63 octave_idx_type howmany, octave_idx_type stride,
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64 octave_idx_type dist, const Complex *in,
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65 Complex *out)
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66 {
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67 static fftw_plan dummy;
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68
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69 return instance_ok ()
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70 ? instance->do_create_plan (dir, rank, dims, howmany, stride,
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71 dist, in, out)
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72 : dummy;
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73 }
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75 static fftw_plan
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76 create_plan (const int rank, const dim_vector dims,
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77 octave_idx_type howmany, octave_idx_type stride,
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78 octave_idx_type dist, const double *in, Complex *out)
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79 {
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80 static fftw_plan dummy;
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81
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82 return instance_ok ()
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83 ? instance->do_create_plan (rank, dims, howmany, stride, dist, in, out)
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84 : dummy;
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85 }
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86
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87 static FftwMethod method (void)
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88 {
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89 static FftwMethod dummy;
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90
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91 return instance_ok () ? instance->do_method () : dummy;
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92 }
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93
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94 static FftwMethod method (FftwMethod _meth)
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95 {
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96 static FftwMethod dummy;
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97
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98 return instance_ok () ? instance->do_method (_meth) : dummy;
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99 }
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100
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101 private:
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102
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103 // No copying!
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104
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105 octave_fftw_planner (const octave_fftw_planner&);
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106
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107 octave_fftw_planner& operator = (const octave_fftw_planner&);
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108
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109 static octave_fftw_planner *instance;
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110
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111 fftw_plan
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112 do_create_plan (int dir, const int rank, const dim_vector dims,
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113 octave_idx_type howmany, octave_idx_type stride,
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114 octave_idx_type dist, const Complex *in,
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115 Complex *out);
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116
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117 fftw_plan
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118 do_create_plan (const int rank, const dim_vector dims,
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119 octave_idx_type howmany, octave_idx_type stride,
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120 octave_idx_type dist, const double *in, Complex *out);
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121
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122 FftwMethod do_method (void);
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123
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124 FftwMethod do_method (FftwMethod _meth);
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125
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126 FftwMethod meth;
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127
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128 // FIXME -- perhaps this should be split into two classes?
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129
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130 // Plan for fft and ifft of complex values
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131 fftw_plan plan[2];
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132
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133 // dist
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134 octave_idx_type d[2];
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135
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136 // stride
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137 octave_idx_type s[2];
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138
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139 // rank
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140 int r[2];
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141
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142 // howmany
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143 octave_idx_type h[2];
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144
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145 // dims
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146 dim_vector n[2];
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147
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148 bool simd_align[2];
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149 bool inplace[2];
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150
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151 // Plan for fft of real values
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152 fftw_plan rplan;
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153
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154 // dist
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155 octave_idx_type rd;
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156
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157 // stride
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158 octave_idx_type rs;
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159
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160 // rank
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161 int rr;
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162
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163 // howmany
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164 octave_idx_type rh;
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165
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166 // dims
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167 dim_vector rn;
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168
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169 bool rsimd_align;
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170 };
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171
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172 class
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173 OCTAVE_API
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174 octave_float_fftw_planner
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175 {
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176 protected:
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177
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178 octave_float_fftw_planner (void);
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179
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180 public:
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181
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182 ~octave_float_fftw_planner (void) { }
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183
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184 enum FftwMethod
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185 {
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186 UNKNOWN = -1,
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187 ESTIMATE,
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188 MEASURE,
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189 PATIENT,
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190 EXHAUSTIVE,
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191 HYBRID
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192 };
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193
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194 static bool instance_ok (void);
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195
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196 static fftwf_plan
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197 create_plan (int dir, const int rank, const dim_vector dims,
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198 octave_idx_type howmany, octave_idx_type stride,
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199 octave_idx_type dist, const FloatComplex *in,
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200 FloatComplex *out)
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201 {
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202 static fftwf_plan dummy;
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203
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204 return instance_ok ()
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205 ? instance->do_create_plan (dir, rank, dims, howmany, stride,
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206 dist, in, out)
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207 : dummy;
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208 }
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209
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210 static fftwf_plan
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211 create_plan (const int rank, const dim_vector dims,
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212 octave_idx_type howmany, octave_idx_type stride,
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213 octave_idx_type dist, const float *in, FloatComplex *out)
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214 {
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215 static fftwf_plan dummy;
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216
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217 return instance_ok ()
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218 ? instance->do_create_plan (rank, dims, howmany, stride, dist, in, out)
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219 : dummy;
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220 }
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221
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222 static FftwMethod method (void)
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223 {
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224 static FftwMethod dummy;
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225
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226 return instance_ok () ? instance->method () : dummy;
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227 }
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228
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229 static FftwMethod method (FftwMethod _meth)
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230 {
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231 static FftwMethod dummy;
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232
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233 return instance_ok () ? instance->method (_meth) : dummy;
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234 }
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235
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236 private:
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237
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238 // No copying!
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239
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240 octave_float_fftw_planner (const octave_float_fftw_planner&);
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241
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242 octave_float_fftw_planner& operator = (const octave_float_fftw_planner&);
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243
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244 static octave_float_fftw_planner *instance;
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245
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246 fftwf_plan
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247 do_create_plan (int dir, const int rank, const dim_vector dims,
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248 octave_idx_type howmany, octave_idx_type stride,
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249 octave_idx_type dist, const FloatComplex *in,
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250 FloatComplex *out);
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251
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252 fftwf_plan
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253 do_create_plan (const int rank, const dim_vector dims,
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254 octave_idx_type howmany, octave_idx_type stride,
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255 octave_idx_type dist, const float *in, FloatComplex *out);
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256
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257 FftwMethod do_method (void);
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258
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259 FftwMethod do_method (FftwMethod _meth);
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260
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261 FftwMethod meth;
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262
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263 // FIXME -- perhaps this should be split into two classes?
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264
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265 // Plan for fft and ifft of complex values
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266 fftwf_plan plan[2];
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267
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268 // dist
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269 octave_idx_type d[2];
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270
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271 // stride
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272 octave_idx_type s[2];
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273
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274 // rank
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275 int r[2];
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276
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277 // howmany
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278 octave_idx_type h[2];
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279
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280 // dims
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281 dim_vector n[2];
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282
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283 bool simd_align[2];
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284 bool inplace[2];
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285
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286 // Plan for fft of real values
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287 fftwf_plan rplan;
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288
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289 // dist
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290 octave_idx_type rd;
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291
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292 // stride
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293 octave_idx_type rs;
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294
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295 // rank
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296 int rr;
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297
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298 // howmany
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299 octave_idx_type rh;
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300
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301 // dims
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302 dim_vector rn;
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303
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304 bool rsimd_align;
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305 };
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306
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307 class
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308 OCTAVE_API
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309 octave_fftw
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310 {
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311 public:
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312
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313 static int fft (const double *in, Complex *out, size_t npts,
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314 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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315 static int fft (const Complex *in, Complex *out, size_t npts,
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316 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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317 static int ifft (const Complex *in, Complex *out, size_t npts,
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318 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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319
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320 static int fftNd (const double*, Complex*, const int, const dim_vector &);
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321 static int fftNd (const Complex*, Complex*, const int,
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322 const dim_vector &);
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323 static int ifftNd (const Complex*, Complex*, const int,
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324 const dim_vector &);
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325
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326 static int fft (const float *in, FloatComplex *out, size_t npts,
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327 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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328 static int fft (const FloatComplex *in, FloatComplex *out, size_t npts,
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329 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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330 static int ifft (const FloatComplex *in, FloatComplex *out, size_t npts,
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331 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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332
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333 static int fftNd (const float*, FloatComplex*, const int, const dim_vector &);
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334 static int fftNd (const FloatComplex*, FloatComplex*, const int,
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335 const dim_vector &);
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336 static int ifftNd (const FloatComplex*, FloatComplex*, const int,
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337 const dim_vector &);
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338
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339 private:
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340 octave_fftw (void);
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341 octave_fftw (const octave_fftw&);
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342 octave_fftw& operator = (const octave_fftw&);
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343 };
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344
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345 #endif
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346
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347 #endif