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1 /* |
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2 * LIBOIL - Library of Optimized Inner Loops |
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3 * Copyright (c) 2003,2004 David A. Schleef <ds@schleef.org> |
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4 * All rights reserved. |
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5 * |
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6 * Redistribution and use in source and binary forms, with or without |
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7 * modification, are permitted provided that the following conditions |
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8 * are met: |
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9 * 1. Redistributions of source code must retain the above copyright |
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10 * notice, this list of conditions and the following disclaimer. |
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11 * 2. Redistributions in binary form must reproduce the above copyright |
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12 * notice, this list of conditions and the following disclaimer in the |
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13 * documentation and/or other materials provided with the distribution. |
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14 * |
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15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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19 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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23 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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25 * POSSIBILITY OF SUCH DAMAGE. |
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26 */ |
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27 //Portions Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. |
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28 |
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29 #ifdef HAVE_CONFIG_H |
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30 #include "config.h" |
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31 #endif |
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32 |
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33 #include <liboil/liboilfunction.h> |
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34 #include "liboil/dct/dct.h" |
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35 #include <math.h> |
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36 |
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37 |
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38 /** |
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39 * oil_mdct12_f64: |
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40 * @d_6: |
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41 * @s_12: |
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42 * |
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43 * Performs a Modified Discrete Cosine Transform (MDCT) |
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44 * on the source array @s_12 and places the result in @d_6. |
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45 */ |
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46 OIL_DEFINE_CLASS (mdct12_f64, "double *d_6, double *s_12"); |
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47 /** |
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48 * oil_imdct12_f64: |
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49 * @d_12: |
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50 * @s_6: |
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51 * |
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52 * Performs a Inverse Modified Discrete Cosine Transform (IMDCT) |
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53 * on the source array @s_6 and places the result in @d_12. |
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54 */ |
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55 OIL_DEFINE_CLASS (imdct12_f64, "double *d_12, double *s_6"); |
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56 /** |
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57 * oil_mdct36_f64: |
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58 * @d_18: |
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59 * @s_36: |
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60 * |
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61 * Performs a Modified Discrete Cosine Transform (MDCT) |
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62 * on the source array @s_36 and places the result in @d_18. |
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63 */ |
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64 OIL_DEFINE_CLASS (mdct36_f64, "double *d_18, double *s_36"); |
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65 /** |
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66 * oil_imdct36_f64: |
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67 * @d_36: |
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68 * @s_18: |
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69 * |
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70 * Performs a Inverse Modified Discrete Cosine Transform (IMDCT) |
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71 * on the source array @s_18 and places the result in @d_36. |
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72 */ |
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73 OIL_DEFINE_CLASS (imdct36_f64, "double *d_36, double *s_18"); |
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74 |
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75 static void |
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76 mdct12_f64_ref(double *dest, const double *src) |
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77 { |
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78 int j, k; |
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79 double x; |
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80 int N = 6; |
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81 |
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82 for(j=0;j<N;j++){ |
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83 x = 0; |
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84 for(k=0;k<2*N;k++){ |
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85 x += src[k] * cos (M_PI/N * (j+0.5) * (k + 0.5 * (N+1))); |
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86 } |
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87 dest[j] = x; |
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88 } |
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89 } |
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90 OIL_DEFINE_IMPL_REF (mdct12_f64_ref, mdct12_f64); |
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91 |
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92 |
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93 static void |
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94 imdct12_f64_ref(double *dest, const double *src) |
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95 { |
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96 int j,k; |
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97 double x; |
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98 int N = 6; |
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99 |
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100 for(k=0;k<2*N;k++){ |
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101 x = 0; |
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102 for(j=0;j<N;j++){ |
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103 x += src[j] * cos (M_PI/N * (j+0.5) * (k+0.5*(N + 1))); |
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104 } |
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105 dest[k] = x; |
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106 } |
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107 } |
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108 OIL_DEFINE_IMPL_REF (imdct12_f64_ref, imdct12_f64); |
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109 |
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110 static void |
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111 mdct36_f64_ref(double *dest, const double *src) |
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112 { |
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113 int j, k; |
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114 double x; |
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115 int N = 18; |
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116 |
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117 for(j=0;j<N;j++){ |
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118 x = 0; |
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119 for(k=0;k<2*N;k++){ |
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120 x += src[k] * cos (M_PI/N * (j+0.5) * (k + 0.5 * (N+1))); |
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121 } |
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122 dest[j] = x; |
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123 } |
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124 } |
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125 OIL_DEFINE_IMPL_REF (mdct36_f64_ref, mdct36_f64); |
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126 |
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127 |
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128 static void |
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129 imdct36_f64_ref(double *dest, const double *src) |
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130 { |
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131 int j,k; |
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132 double x; |
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133 int N = 18; |
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134 |
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135 for(k=0;k<2*N;k++){ |
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136 x = 0; |
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137 for(j=0;j<N;j++){ |
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138 x += src[j] * cos (M_PI/N * (j+0.5) * (k+0.5*(N + 1))); |
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139 } |
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140 dest[k] = x; |
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141 } |
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142 } |
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143 OIL_DEFINE_IMPL_REF (imdct36_f64_ref, imdct36_f64); |
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144 |
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145 |
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146 |
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147 |
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148 |
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149 #ifdef __SYMBIAN32__ |
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150 |
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151 OilFunctionClass* __oil_function_class_mdct12_f64() { |
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152 return &_oil_function_class_mdct12_f64; |
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153 } |
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154 #endif |
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155 |
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156 #ifdef __SYMBIAN32__ |
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157 |
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158 OilFunctionClass* __oil_function_class_imdct12_f64() { |
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159 return &_oil_function_class_imdct12_f64; |
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160 } |
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161 #endif |
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162 |
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163 #ifdef __SYMBIAN32__ |
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164 |
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165 OilFunctionClass* __oil_function_class_mdct36_f64() { |
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166 return &_oil_function_class_mdct36_f64; |
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167 } |
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168 #endif |
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169 |
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170 #ifdef __SYMBIAN32__ |
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171 |
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172 OilFunctionClass* __oil_function_class_imdct36_f64() { |
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173 return &_oil_function_class_imdct36_f64; |
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174 } |
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175 #endif |
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176 |
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177 |
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178 |
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179 #ifdef __SYMBIAN32__ |
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180 |
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181 OilFunctionImpl* __oil_function_impl_mdct12_f64_ref() { |
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182 return &_oil_function_impl_mdct12_f64_ref; |
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183 } |
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184 #endif |
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185 |
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186 #ifdef __SYMBIAN32__ |
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187 |
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188 OilFunctionImpl* __oil_function_impl_imdct12_f64_ref() { |
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189 return &_oil_function_impl_imdct12_f64_ref; |
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190 } |
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191 #endif |
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192 |
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193 #ifdef __SYMBIAN32__ |
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194 |
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195 OilFunctionImpl* __oil_function_impl_mdct36_f64_ref() { |
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196 return &_oil_function_impl_mdct36_f64_ref; |
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197 } |
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198 #endif |
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199 |
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200 #ifdef __SYMBIAN32__ |
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201 |
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202 OilFunctionImpl* __oil_function_impl_imdct36_f64_ref() { |
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203 return &_oil_function_impl_imdct36_f64_ref; |
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204 } |
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205 #endif |
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206 |
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207 |
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208 |
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209 #ifdef __SYMBIAN32__ |
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210 |
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211 EXPORT_C void** _oil_function_class_ptr_mdct12_f64 () { |
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212 oil_function_class_ptr_mdct12_f64 = __oil_function_class_mdct12_f64(); |
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213 return &oil_function_class_ptr_mdct12_f64->func; |
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214 } |
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215 #endif |
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216 |
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217 #ifdef __SYMBIAN32__ |
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218 |
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219 EXPORT_C void** _oil_function_class_ptr_imdct12_f64 () { |
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220 oil_function_class_ptr_imdct12_f64 = __oil_function_class_imdct12_f64(); |
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221 return &oil_function_class_ptr_imdct12_f64->func; |
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222 } |
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223 #endif |
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224 |
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225 #ifdef __SYMBIAN32__ |
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226 |
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227 EXPORT_C void** _oil_function_class_ptr_mdct36_f64 () { |
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228 oil_function_class_ptr_mdct36_f64 = __oil_function_class_mdct36_f64(); |
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229 return &oil_function_class_ptr_mdct36_f64->func; |
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230 } |
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231 #endif |
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232 |
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233 #ifdef __SYMBIAN32__ |
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234 |
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235 EXPORT_C void** _oil_function_class_ptr_imdct36_f64 () { |
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236 oil_function_class_ptr_imdct36_f64 = __oil_function_class_imdct36_f64(); |
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237 return &oil_function_class_ptr_imdct36_f64->func; |
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238 } |
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239 #endif |
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240 |