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<div class="title">bimedian_demosaic.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* </span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * libopenraw - demoisaic.cpp</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * This library is free software: you can redistribute it and/or</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public License</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * as published by the Free Software Foundation, either version 3 of</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * the License, or (at your option) any later version.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * This library is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * License along with this library. If not, see</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * <http://www.gnu.org/licenses/>.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * This code has been adapted from GEGL:</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * Copyright 2006 Øyvind Kolås <pippin@gimp.org></span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * Copyright 2008 Bradley Broom <bmbroom@gmail.com></span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * In libopenraw:</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * Copyright 2008-2009 Hubert Figuiere <hub@figuiere.net></span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * Copyright 2008 Novell Inc.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <libopenraw/demosaic.h></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keywordtype">void</span> bimedian_demosaic (uint16_t *src, uint32_t src_x, uint32_t src_y, </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  or_cfa_pattern pattern, uint8_t *dst);</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">extern "C" void or_demosaic(uint16_t*, uint32_t, uint32_t, or_cfa_pattern, uint8_t*)</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">{</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">}</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">/* Returns the median of four floats. We define the median as the average of</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * the central two elements.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">float</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> m4 (<span class="keywordtype">float</span> a, <span class="keywordtype">float</span> b, <span class="keywordtype">float</span> c, <span class="keywordtype">float</span> d)</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">float</span> t;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">/* Sort ab */</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">if</span> (a > b)</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  t = b;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  b = a;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  a = t;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">/* Sort abc */</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">if</span> (b > c)</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  t = c;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  c = b;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">if</span> (a > t)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  b = a;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  a = t;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  b = t;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  }</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">/* Return average of central two elements. */</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">if</span> (d >= c) <span class="comment">/* Sorted order would be abcd */</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">return</span> (b + c) / 2.0;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (d >= a) <span class="comment">/* Sorted order would be either abdc or adbc */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">return</span> (b + d) / 2.0;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">else</span> <span class="comment">/* Sorted order would be dabc */</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> (a + b) / 2.0;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> }</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">/* Defines to make the row/col offsets below obvious. */</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#define ROW src_x</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="preprocessor">#define COL 1</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">/* We expect src_extent to have a one pixel border around all four sides</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * of dst_extent.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> bimedian_demosaic (uint16_t *src, uint32_t src_x, uint32_t src_y, </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  or_cfa_pattern pattern, uint8_t *dst)</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  uint32_t x,y;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  uint32_t offset, doffset;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">float</span> *src_buf;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">float</span> *dst_buf;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">int</span> npattern = 0;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">switch</span>(pattern) {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">case</span> OR_CFA_PATTERN_GRBG:</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  npattern = 0;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">case</span> OR_CFA_PATTERN_BGGR:</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  npattern = 1;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">case</span> OR_CFA_PATTERN_GBRG:</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  npattern = 2;</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">case</span> OR_CFA_PATTERN_RGGB:</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  npattern = 3;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  src_buf = (<span class="keywordtype">float</span>*)calloc(src_x * src_y, <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>));</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  dst_buf = (<span class="keywordtype">float</span>*)calloc(src_x * src_y * 3, <span class="keyword">sizeof</span>(<span class="keywordtype">float</span>));</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  std::copy(src, src + (src_x * src_y), src_buf);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  offset = ROW + COL;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  doffset = 0;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">for</span>(y = 1 ; y < src_y - 1; y++)</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  {</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">for</span> (x = 1 ; x < src_x - 1; x++)</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordtype">float</span> red=0.0;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordtype">float</span> green=0.0;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordtype">float</span> blue=0.0;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">if</span> ((y + npattern%2)%2==0) {</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">if</span> ((x+npattern/2)%2==1) {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="comment">/* GRG</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * BGB</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * GRG</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  blue =(src_buf[offset-COL]+src_buf[offset+COL])/2.0;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  green=src_buf[offset];</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  red =(src_buf[offset-ROW]+src_buf[offset+ROW])/2.0;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="comment">/* RGR</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> * GBG</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> * RGR</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  blue =src_buf[offset];</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  green=m4(src_buf[offset-ROW], src_buf[offset-COL],</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  src_buf[offset+COL], src_buf[offset+ROW]);</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  red =m4(src_buf[offset-ROW-COL], src_buf[offset-ROW+COL],</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  src_buf[offset+ROW-COL], src_buf[offset+ROW+COL]);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  }</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">if</span> ((x+npattern/2)%2==1) {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">/* BGB</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"> * GRG</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> * BGB</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  blue =m4(src_buf[offset-ROW-COL], src_buf[offset-ROW+COL],</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  src_buf[offset+ROW-COL], src_buf[offset+ROW+COL]);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  green=m4(src_buf[offset-ROW], src_buf[offset-COL],</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  src_buf[offset+COL], src_buf[offset+ROW]);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  red =src_buf[offset];</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  }</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">/* GBG</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"> * RGR</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> * GBG</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  blue =(src_buf[offset-ROW]+src_buf[offset+ROW])/2.0;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  green=src_buf[offset];</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  red =(src_buf[offset-COL]+src_buf[offset+COL])/2.0;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  dst_buf [doffset*3+0] = red / 16.0;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  dst_buf [doffset*3+1] = green / 16.0;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  dst_buf [doffset*3+2] = blue / 16.0;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  offset++;</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  doffset++;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  }</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  offset+=2;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  std::copy(dst_buf, dst_buf + (src_x * src_y * 3), dst); </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  free(src_buf);</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  free(dst_buf);</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> }</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment"> Local Variables:</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment"> mode:c++</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="comment"> c-file-style:"stroustrup"</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"> c-file-offsets:((innamespace . 0))</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> indent-tabs-mode:nil</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"> fill-column:80</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> End:</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment">*/</span></div>
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Mageia
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