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annotate liboctave/numeric/oct-fftw.h @ 15818:142de7308ebf

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main: periodic merge of stable to default
author Jordi Gutiérrez Hermoso <jordigh@octave.org>
date Wed, 19 Dec 2012 10:55:44 -0500
parents liboctave/oct-fftw.h@f63a4f23bfe7 liboctave/oct-fftw.h@648dabbb4c6b
children bde7731b2b83
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1 /*
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2
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3 Copyright (C) 2001-2012 John W. Eaton
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4
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5 This file is part of Octave.
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6
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
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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
adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
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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
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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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48
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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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74
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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 static void cleanup_instance (void) { delete instance; instance = 0; }
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112
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113 fftw_plan
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114 do_create_plan (int dir, const int rank, const dim_vector dims,
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115 octave_idx_type howmany, octave_idx_type stride,
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116 octave_idx_type dist, const Complex *in,
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117 Complex *out);
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118
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119 fftw_plan
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120 do_create_plan (const int rank, const dim_vector dims,
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121 octave_idx_type howmany, octave_idx_type stride,
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122 octave_idx_type dist, const double *in, Complex *out);
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123
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124 FftwMethod do_method (void);
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125
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126 FftwMethod do_method (FftwMethod _meth);
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127
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128 FftwMethod meth;
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129
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130 // FIXME -- perhaps this should be split into two classes?
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131
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132 // Plan for fft and ifft of complex values
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133 fftw_plan plan[2];
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134
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135 // dist
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136 octave_idx_type d[2];
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137
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138 // stride
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139 octave_idx_type s[2];
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140
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141 // rank
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142 int r[2];
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143
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144 // howmany
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145 octave_idx_type h[2];
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146
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147 // dims
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148 dim_vector n[2];
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149
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150 bool simd_align[2];
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151 bool inplace[2];
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152
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153 // Plan for fft of real values
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154 fftw_plan rplan;
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155
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156 // dist
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157 octave_idx_type rd;
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158
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159 // stride
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160 octave_idx_type rs;
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161
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162 // rank
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163 int rr;
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164
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165 // howmany
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166 octave_idx_type rh;
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167
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168 // dims
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169 dim_vector rn;
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170
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171 bool rsimd_align;
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172 };
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173
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174 class
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175 OCTAVE_API
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176 octave_float_fftw_planner
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177 {
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178 protected:
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179
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180 octave_float_fftw_planner (void);
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181
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182 public:
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183
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184 ~octave_float_fftw_planner (void);
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185
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186 enum FftwMethod
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187 {
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188 UNKNOWN = -1,
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189 ESTIMATE,
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190 MEASURE,
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191 PATIENT,
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192 EXHAUSTIVE,
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193 HYBRID
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194 };
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195
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196 static bool instance_ok (void);
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197
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198 static fftwf_plan
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199 create_plan (int dir, const int rank, const dim_vector dims,
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200 octave_idx_type howmany, octave_idx_type stride,
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201 octave_idx_type dist, const FloatComplex *in,
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202 FloatComplex *out)
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203 {
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204 static fftwf_plan dummy;
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205
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206 return instance_ok ()
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207 ? instance->do_create_plan (dir, rank, dims, howmany, stride,
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208 dist, in, out)
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209 : dummy;
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210 }
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211
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212 static fftwf_plan
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213 create_plan (const int rank, const dim_vector dims,
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214 octave_idx_type howmany, octave_idx_type stride,
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215 octave_idx_type dist, const float *in, FloatComplex *out)
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216 {
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217 static fftwf_plan dummy;
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218
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219 return instance_ok ()
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220 ? instance->do_create_plan (rank, dims, howmany, stride, dist, in, out)
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221 : dummy;
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222 }
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223
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224 static FftwMethod method (void)
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225 {
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226 static FftwMethod dummy;
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227
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228 return instance_ok () ? instance->do_method () : dummy;
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229 }
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230
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231 static FftwMethod method (FftwMethod _meth)
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232 {
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233 static FftwMethod dummy;
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234
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235 return instance_ok () ? instance->do_method (_meth) : dummy;
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236 }
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237
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238 private:
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239
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240 // No copying!
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241
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242 octave_float_fftw_planner (const octave_float_fftw_planner&);
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243
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244 octave_float_fftw_planner& operator = (const octave_float_fftw_planner&);
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245
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246 static octave_float_fftw_planner *instance;
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247
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248 static void cleanup_instance (void) { delete instance; instance = 0; }
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249
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250 fftwf_plan
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251 do_create_plan (int dir, const int rank, const dim_vector dims,
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252 octave_idx_type howmany, octave_idx_type stride,
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253 octave_idx_type dist, const FloatComplex *in,
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254 FloatComplex *out);
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255
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256 fftwf_plan
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257 do_create_plan (const int rank, const dim_vector dims,
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258 octave_idx_type howmany, octave_idx_type stride,
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259 octave_idx_type dist, const float *in, FloatComplex *out);
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260
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261 FftwMethod do_method (void);
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262
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263 FftwMethod do_method (FftwMethod _meth);
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264
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265 FftwMethod meth;
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266
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267 // FIXME -- perhaps this should be split into two classes?
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268
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269 // Plan for fft and ifft of complex values
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270 fftwf_plan plan[2];
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271
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272 // dist
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273 octave_idx_type d[2];
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274
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275 // stride
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276 octave_idx_type s[2];
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277
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278 // rank
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279 int r[2];
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280
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281 // howmany
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282 octave_idx_type h[2];
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283
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284 // dims
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285 dim_vector n[2];
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286
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287 bool simd_align[2];
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288 bool inplace[2];
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289
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290 // Plan for fft of real values
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291 fftwf_plan rplan;
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292
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293 // dist
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294 octave_idx_type rd;
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295
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296 // stride
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297 octave_idx_type rs;
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298
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299 // rank
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300 int rr;
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301
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302 // howmany
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303 octave_idx_type rh;
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304
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305 // dims
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306 dim_vector rn;
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307
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308 bool rsimd_align;
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309 };
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310
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311 class
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312 OCTAVE_API
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313 octave_fftw
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314 {
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315 public:
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316
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317 static int fft (const double *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 static int fft (const Complex *in, Complex *out, size_t npts,
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320 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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321 static int ifft (const Complex *in, Complex *out, size_t npts,
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322 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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323
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324 static int fftNd (const double*, Complex*, const int, const dim_vector &);
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325 static int fftNd (const Complex*, Complex*, const int,
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326 const dim_vector &);
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327 static int ifftNd (const Complex*, Complex*, const int,
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328 const dim_vector &);
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329
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330 static int fft (const float *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 static int fft (const FloatComplex *in, FloatComplex *out, size_t npts,
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333 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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334 static int ifft (const FloatComplex *in, FloatComplex *out, size_t npts,
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335 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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336
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337 static int fftNd (const float*, FloatComplex*, const int, const dim_vector &);
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338 static int fftNd (const FloatComplex*, FloatComplex*, const int,
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339 const dim_vector &);
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340 static int ifftNd (const FloatComplex*, FloatComplex*, const int,
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341 const dim_vector &);
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342
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343 private:
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344 octave_fftw (void);
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345 octave_fftw (const octave_fftw&);
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346 octave_fftw& operator = (const octave_fftw&);
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347 };
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348
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349 #endif
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350
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351 #endif