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annotate liboctave/oct-fftw.h @ 9636:74be4b7273e4 ss-3-3-50

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update version info for snapshot
author John W. Eaton <jwe@octave.org>
date Sat, 12 Sep 2009 06:55:13 -0400
parents 0ce82753dd72
children 4c0cdbe0acca
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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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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 static octave_fftw_planner *instance;
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104
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105 fftw_plan
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106 do_create_plan (int dir, const int rank, const dim_vector dims,
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107 octave_idx_type howmany, octave_idx_type stride,
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108 octave_idx_type dist, const Complex *in,
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109 Complex *out);
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110
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111 fftw_plan
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112 do_create_plan (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 double *in, Complex *out);
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115
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116 FftwMethod do_method (void);
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117
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118 FftwMethod do_method (FftwMethod _meth);
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119
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120 FftwMethod meth;
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121
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122 // FIXME -- perhaps this should be split into two classes?
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123
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124 // Plan for fft and ifft of complex values
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125 fftw_plan plan[2];
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126
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127 // dist
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128 octave_idx_type d[2];
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129
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130 // stride
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131 octave_idx_type s[2];
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132
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133 // rank
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134 int r[2];
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135
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136 // howmany
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137 octave_idx_type h[2];
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138
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139 // dims
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140 dim_vector n[2];
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141
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142 bool simd_align[2];
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143 bool inplace[2];
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144
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145 // Plan for fft of real values
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146 fftw_plan rplan;
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147
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148 // dist
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149 octave_idx_type rd;
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150
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151 // stride
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152 octave_idx_type rs;
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153
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154 // rank
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155 int rr;
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156
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157 // howmany
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158 octave_idx_type rh;
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159
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160 // dims
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161 dim_vector rn;
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162
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163 bool rsimd_align;
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164 };
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165
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166 class
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167 OCTAVE_API
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168 octave_float_fftw_planner
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169 {
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170 protected:
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171
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172 octave_float_fftw_planner (void);
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173
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174 public:
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175
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176 ~octave_float_fftw_planner (void) { }
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177
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178 enum FftwMethod
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179 {
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180 UNKNOWN = -1,
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181 ESTIMATE,
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182 MEASURE,
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183 PATIENT,
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184 EXHAUSTIVE,
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185 HYBRID
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186 };
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187
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188 static bool instance_ok (void);
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189
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190 static fftwf_plan
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191 create_plan (int dir, const int rank, const dim_vector dims,
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192 octave_idx_type howmany, octave_idx_type stride,
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193 octave_idx_type dist, const FloatComplex *in,
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194 FloatComplex *out)
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195 {
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196 static fftwf_plan dummy;
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197
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198 return instance_ok ()
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199 ? instance->do_create_plan (dir, rank, dims, howmany, stride,
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200 dist, in, out)
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201 : dummy;
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202 }
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203
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204 static fftwf_plan
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205 create_plan (const int rank, const dim_vector dims,
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206 octave_idx_type howmany, octave_idx_type stride,
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207 octave_idx_type dist, const float *in, FloatComplex *out)
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208 {
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209 static fftwf_plan dummy;
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210
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211 return instance_ok ()
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212 ? instance->do_create_plan (rank, dims, howmany, stride, dist, in, out)
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213 : dummy;
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214 }
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215
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216 static FftwMethod method (void)
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217 {
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218 static FftwMethod dummy;
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219
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220 return instance_ok () ? instance->method () : dummy;
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221 }
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222
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223 static FftwMethod method (FftwMethod _meth)
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224 {
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225 static FftwMethod dummy;
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226
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227 return instance_ok () ? instance->method (_meth) : dummy;
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228 }
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229
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230 private:
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231
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232 static octave_float_fftw_planner *instance;
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233
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234 fftwf_plan
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235 do_create_plan (int dir, const int rank, const dim_vector dims,
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236 octave_idx_type howmany, octave_idx_type stride,
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237 octave_idx_type dist, const FloatComplex *in,
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238 FloatComplex *out);
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239
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240 fftwf_plan
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241 do_create_plan (const int rank, const dim_vector dims,
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242 octave_idx_type howmany, octave_idx_type stride,
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243 octave_idx_type dist, const float *in, FloatComplex *out);
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244
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245 FftwMethod do_method (void);
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246
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247 FftwMethod do_method (FftwMethod _meth);
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248
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249 FftwMethod meth;
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250
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251 // FIXME -- perhaps this should be split into two classes?
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252
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253 // Plan for fft and ifft of complex values
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254 fftwf_plan plan[2];
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255
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256 // dist
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257 octave_idx_type d[2];
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258
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259 // stride
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260 octave_idx_type s[2];
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261
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262 // rank
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263 int r[2];
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264
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265 // howmany
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266 octave_idx_type h[2];
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267
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268 // dims
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269 dim_vector n[2];
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270
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271 bool simd_align[2];
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272 bool inplace[2];
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273
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274 // Plan for fft of real values
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275 fftwf_plan rplan;
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276
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277 // dist
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278 octave_idx_type rd;
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279
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280 // stride
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281 octave_idx_type rs;
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282
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283 // rank
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284 int rr;
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285
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286 // howmany
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287 octave_idx_type rh;
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288
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289 // dims
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290 dim_vector rn;
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291
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292 bool rsimd_align;
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293 };
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294
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295 class
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296 OCTAVE_API
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297 octave_fftw
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298 {
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299 public:
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300
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301 static int fft (const double *in, Complex *out, size_t npts,
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302 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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303 static int fft (const Complex *in, Complex *out, size_t npts,
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304 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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305 static int ifft (const Complex *in, Complex *out, size_t npts,
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306 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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307
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308 static int fftNd (const double*, Complex*, const int, const dim_vector &);
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309 static int fftNd (const Complex*, Complex*, const int,
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310 const dim_vector &);
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311 static int ifftNd (const Complex*, Complex*, const int,
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312 const dim_vector &);
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313
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314 static int fft (const float *in, FloatComplex *out, size_t npts,
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315 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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316 static int fft (const FloatComplex *in, FloatComplex *out, size_t npts,
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317 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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318 static int ifft (const FloatComplex *in, FloatComplex *out, size_t npts,
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319 size_t nsamples = 1, octave_idx_type stride = 1, octave_idx_type dist = -1);
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320
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321 static int fftNd (const float*, FloatComplex*, const int, const dim_vector &);
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322 static int fftNd (const FloatComplex*, FloatComplex*, const int,
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323 const dim_vector &);
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324 static int ifftNd (const FloatComplex*, FloatComplex*, const int,
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325 const dim_vector &);
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326
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327 private:
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328 octave_fftw (void);
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329 octave_fftw (const octave_fftw&);
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330 octave_fftw& operator = (const octave_fftw&);
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331 };
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332
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333 #endif
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334
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335 #endif
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336
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337 /*
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338 ;;; Local Variables: ***
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339 ;;; mode: C++ ***
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340 ;;; End: ***
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341 */
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342