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annotate liboctave/oct-fftw.h @ 9516:fb933db0c517

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convert fftw planner classes to singleton objects
author John W. Eaton <jwe@octave.org>
date Tue, 11 Aug 2009 23:52:20 -0400
parents eb63fbe60fab
children 0ce82753dd72
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1 /*
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2
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3 Copyright (C) 2001, 2004, 2005, 2007, 2008, 2009 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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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 protected:
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37
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38 octave_fftw_planner (void);
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39
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40 public:
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41
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42 ~octave_fftw_planner (void) { }
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44 enum FftwMethod
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45 {
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46 UNKNOWN = -1,
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47 ESTIMATE,
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48 MEASURE,
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49 PATIENT,
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50 EXHAUSTIVE,
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51 HYBRID
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52 };
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53
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54 static bool instance_ok (void);
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55
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56 static fftw_plan
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57 create_plan (int dir, const int rank, const dim_vector dims,
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58 octave_idx_type howmany, octave_idx_type stride,
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59 octave_idx_type dist, const Complex *in,
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60 Complex *out)
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61 {
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62 static fftw_plan dummy;
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63
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64 return instance_ok ()
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65 ? instance->do_create_plan (dir, rank, dims, howmany, stride,
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66 dist, in, out)
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67 : dummy;
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68 }
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69
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70 static fftw_plan
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71 create_plan (const int rank, const dim_vector dims,
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72 octave_idx_type howmany, octave_idx_type stride,
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73 octave_idx_type dist, const double *in, Complex *out)
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74 {
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75 static fftw_plan dummy;
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76
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77 return instance_ok ()
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78 ? instance->do_create_plan (rank, dims, howmany, stride, dist, in, out)
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79 : dummy;
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80 }
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81
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82 static FftwMethod method (void)
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83 {
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84 static FftwMethod dummy;
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85
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86 return instance_ok () ? instance->do_method () : dummy;
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87 }
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88
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89 static FftwMethod method (FftwMethod _meth)
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90 {
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91 static FftwMethod dummy;
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92
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93 return instance_ok () ? instance->do_method (_meth) : dummy;
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94 }
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95
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96 private:
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97
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98 static octave_fftw_planner *instance;
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99
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100 fftw_plan
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101 do_create_plan (int dir, const int rank, const dim_vector dims,
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102 octave_idx_type howmany, octave_idx_type stride,
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103 octave_idx_type dist, const Complex *in,
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104 Complex *out);
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105
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106 fftw_plan
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107 do_create_plan (const int rank, const dim_vector dims,
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108 octave_idx_type howmany, octave_idx_type stride,
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109 octave_idx_type dist, const double *in, Complex *out);
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110
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111 FftwMethod do_method (void);
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112
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113 FftwMethod do_method (FftwMethod _meth);
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114
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115 FftwMethod meth;
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116
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117 // FIXME -- perhaps this should be split into two classes?
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118
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119 // Plan for fft and ifft of complex values
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120 fftw_plan plan[2];
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121
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122 // dist
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123 octave_idx_type d[2];
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124
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125 // stride
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126 octave_idx_type s[2];
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127
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128 // rank
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129 int r[2];
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130
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131 // howmany
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132 octave_idx_type h[2];
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133
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134 // dims
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135 dim_vector n[2];
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136
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137 bool simd_align[2];
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138 bool inplace[2];
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139
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140 // Plan for fft of real values
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141 fftw_plan rplan;
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142
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143 // dist
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144 octave_idx_type rd;
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145
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146 // stride
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147 octave_idx_type rs;
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148
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149 // rank
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150 int rr;
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151
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152 // howmany
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153 octave_idx_type rh;
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154
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155 // dims
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156 dim_vector rn;
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157
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158 bool rsimd_align;
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159 };
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160
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161 class
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162 OCTAVE_API
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163 octave_float_fftw_planner
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164 {
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165 protected:
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166
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167 octave_float_fftw_planner (void);
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168
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169 public:
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170
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171 ~octave_float_fftw_planner (void) { }
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172
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173 enum FftwMethod
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174 {
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175 UNKNOWN = -1,
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176 ESTIMATE,
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177 MEASURE,
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178 PATIENT,
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179 EXHAUSTIVE,
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180 HYBRID
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181 };
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182
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183 static bool instance_ok (void);
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184
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185 static fftwf_plan
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186 create_plan (int dir, const int rank, const dim_vector dims,
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187 octave_idx_type howmany, octave_idx_type stride,
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188 octave_idx_type dist, const FloatComplex *in,
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189 FloatComplex *out)
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190 {
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191 static fftwf_plan dummy;
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192
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193 return instance_ok ()
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194 ? instance->do_create_plan (dir, rank, dims, howmany, stride,
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195 dist, in, out)
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196 : dummy;
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197 }
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198
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199 static fftwf_plan
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200 create_plan (const int rank, const dim_vector dims,
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201 octave_idx_type howmany, octave_idx_type stride,
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202 octave_idx_type dist, const float *in, 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 (rank, dims, howmany, stride, dist, in, out)
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208 : dummy;
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209 }
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210
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211 static FftwMethod method (void)
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212 {
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213 static FftwMethod dummy;
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214
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215 return instance_ok () ? instance->method () : dummy;
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216 }
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217
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218 static FftwMethod method (FftwMethod _meth)
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219 {
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220 static FftwMethod dummy;
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221
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222 return instance_ok () ? instance->method (_meth) : dummy;
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223 }
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224
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225 private:
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226
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227 static octave_float_fftw_planner *instance;
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228
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229 fftwf_plan
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230 do_create_plan (int dir, const int rank, const dim_vector dims,
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231 octave_idx_type howmany, octave_idx_type stride,
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232 octave_idx_type dist, const FloatComplex *in,
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233 FloatComplex *out);
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234
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235 fftwf_plan
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236 do_create_plan (const int rank, const dim_vector dims,
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237 octave_idx_type howmany, octave_idx_type stride,
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238 octave_idx_type dist, const float *in, FloatComplex *out);
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239
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240 FftwMethod do_method (void);
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241
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242 FftwMethod do_method (FftwMethod _meth);
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243
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244 FftwMethod meth;
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245
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246 // FIXME -- perhaps this should be split into two classes?
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247
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248 // Plan for fft and ifft of complex values
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249 fftwf_plan plan[2];
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250
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251 // dist
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252 octave_idx_type d[2];
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253
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254 // stride
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255 octave_idx_type s[2];
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256
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257 // rank
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258 int r[2];
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259
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260 // howmany
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261 octave_idx_type h[2];
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262
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263 // dims
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264 dim_vector n[2];
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265
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266 bool simd_align[2];
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267 bool inplace[2];
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268
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269 // Plan for fft of real values
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270 fftwf_plan rplan;
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271
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272 // dist
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273 octave_idx_type rd;
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274
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275 // stride
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276 octave_idx_type rs;
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277
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278 // rank
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279 int rr;
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280
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281 // howmany
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282 octave_idx_type rh;
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283
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284 // dims
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285 dim_vector rn;
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286
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287 bool rsimd_align;
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288 };
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289
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290 class
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291 OCTAVE_API
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292 octave_fftw
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293 {
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294 public:
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295 static int fft (const double *in, Complex *out, size_t npts,
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296 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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297 static int fft (const Complex *in, Complex *out, size_t npts,
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298 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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299 static int ifft (const Complex *in, Complex *out, size_t npts,
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300 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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301
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302 static int fftNd (const double*, Complex*, const int, const dim_vector &);
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303 static int fftNd (const Complex*, Complex*, const int,
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304 const dim_vector &);
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305 static int ifftNd (const Complex*, Complex*, const int,
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306 const dim_vector &);
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307
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308 static int fft (const float *in, FloatComplex *out, size_t npts,
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309 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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310 static int fft (const FloatComplex *in, FloatComplex *out, size_t npts,
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311 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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312 static int ifft (const FloatComplex *in, FloatComplex *out, size_t npts,
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313 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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314
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315 static int fftNd (const float*, FloatComplex*, const int, const dim_vector &);
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316 static int fftNd (const FloatComplex*, FloatComplex*, const int,
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317 const dim_vector &);
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318 static int ifftNd (const FloatComplex*, FloatComplex*, const int,
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319 const dim_vector &);
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320
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adc217ebe692 [project @ 2001-05-02 14:50:46 by jwe]
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321 private:
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322 octave_fftw ();
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323 octave_fftw (const octave_fftw&);
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324 octave_fftw& operator = (const octave_fftw&);
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325 };
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326
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327 #endif
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328
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329 /*
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330 ;;; Local Variables: ***
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331 ;;; mode: C++ ***
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332 ;;; End: ***
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333 */
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334