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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_1878a3f4746a95c6aad317458cc7ef80.html">boost</a></li><li class="navelem"><a class="el" href="dir_df4750f408086f9b9c1b5ee4251365ff.html">gil</a></li> </ul>
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<div class="title">bit_aligned_pixel_reference.hpp</div> </div>
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<a href="bit__aligned__pixel__reference_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> Copyright 2005-2007 Adobe Systems Incorporated</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> </span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> Use, modification and distribution are subject to the Boost Software License,</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> http://www.boost.org/LICENSE_1_0.txt).</span></div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"></span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> See http://stlab.adobe.com/gil for most recent version including documentation.</span></div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">*/</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">/*************************************************************************************************/</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#ifndef GIL_BIT_ALIGNED_PIXEL_REFERENCE_HPP</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"></span><span class="preprocessor">#define GIL_BIT_ALIGNED_PIXEL_REFERENCE_HPP</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor"></span></div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <functional></span></div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <boost/config.hpp></span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <boost/mpl/accumulate.hpp></span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <boost/mpl/at.hpp></span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <boost/mpl/bool.hpp></span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <boost/mpl/if.hpp></span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <boost/mpl/plus.hpp></span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <boost/mpl/push_back.hpp></span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <boost/mpl/vector.hpp></span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include "<a class="code" href="gil__config_8hpp.html">gil_config.hpp</a>"</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include "<a class="code" href="pixel_8hpp.html">pixel.hpp</a>"</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include "<a class="code" href="channel_8hpp.html">channel.hpp</a>"</span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// bit_range</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// Represents a range of bits that can span multiple consecutive bytes. The range has a size fixed at compile time, but the offset is specified at run time.</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"></span> </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> RangeSize, <span class="keywordtype">bool</span> Mutable></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">class </span>bit_range {</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> mpl::if_c<Mutable,unsigned char,const unsigned char>::type byte_t;</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">typedef</span> std::ptrdiff_t difference_type;</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">template</span> <<span class="keywordtype">int</span> RS, <span class="keywordtype">bool</span> M> <span class="keyword">friend</span> <span class="keyword">class </span>bit_range;</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  byte_t* _current_byte; <span class="comment">// the starting byte of the bit range</span></div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">int</span> _bit_offset; <span class="comment">// offset from the beginning of the current byte. 0<=_bit_offset<=7</span></div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  bit_range() : _current_byte(NULL), _bit_offset(0) {}</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  bit_range(byte_t* current_byte, <span class="keywordtype">int</span> bit_offset) : _current_byte(current_byte), _bit_offset(bit_offset) { assert(bit_offset>=0 && bit_offset<8); } </div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  bit_range(<span class="keyword">const</span> bit_range& br) : _current_byte(br._current_byte), _bit_offset(br._bit_offset) {}</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">template</span> <<span class="keywordtype">bool</span> M> bit_range(<span class="keyword">const</span> bit_range<RangeSize,M>& br) : _current_byte(br._current_byte), _bit_offset(br._bit_offset) {}</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  bit_range& operator=(<span class="keyword">const</span> bit_range& br) { _current_byte = br._current_byte; _bit_offset=br._bit_offset; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> bit_range& br)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _current_byte==br._current_byte && _bit_offset==br._bit_offset; }</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  bit_range& operator++() {</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  _current_byte += (_bit_offset+RangeSize) / 8;</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  _bit_offset = (_bit_offset+RangeSize) % 8;</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  bit_range& operator--() { bit_advance(-RangeSize); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">void</span> bit_advance(difference_type num_bits) {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">int</span> new_offset = int(_bit_offset+num_bits);</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  _current_byte += new_offset / 8;</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  _bit_offset = new_offset % 8;</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span> (_bit_offset<0) {</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  _bit_offset+=8;</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  --_current_byte;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  difference_type bit_distance_to(<span class="keyword">const</span> bit_range& b)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> (b.current_byte() - current_byte())*8 + b.bit_offset()-bit_offset();</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  byte_t* current_byte()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _current_byte; }</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">int</span> bit_offset()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _bit_offset; }</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> };</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField,</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keyword">typename</span> ChannelBitSizes, <span class="comment">// MPL integral vector defining the number of bits for each channel. For example, for 565RGB, vector_c<int,5,6,5></span></div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keyword">typename</span> Layout, </div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordtype">bool</span> IsMutable></div>
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<div class="line"><a name="l00125"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html"> 125</a></span> <span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a> {</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  BOOST_STATIC_CONSTANT(<span class="keywordtype">int</span>, bit_size = (mpl::accumulate<ChannelBitSizes, mpl::int_<0>, mpl::plus<mpl::_1, mpl::_2> >::type::value));</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">typedef</span> boost::gil::bit_range<bit_size,IsMutable> bit_range_t;</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">typedef</span> BitField bitfield_t; </div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> mpl::if_c<IsMutable,unsigned char*,const unsigned char*>::type data_ptr_t;</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">typedef</span> Layout layout_t;</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1packed__pixel.html">packed_pixel_type<bitfield_t,ChannelBitSizes,Layout>::type</a> <a class="code" href="structboost_1_1gil_1_1packed__pixel.html">value_type</a>;</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">reference</a>;</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference<BitField,ChannelBitSizes,Layout,false></a> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">const_reference</a>;</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  BOOST_STATIC_CONSTANT(<span class="keywordtype">bool</span>, is_mutable = IsMutable);</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a>(){}</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a>(data_ptr_t data_ptr, <span class="keywordtype">int</span> bit_offset) : _bit_range(data_ptr, bit_offset) {}</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">explicit</span> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a>(<span class="keyword">const</span> bit_range_t& bit_range) : _bit_range(bit_range) {}</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">template</span> <<span class="keywordtype">bool</span> IsMutable2> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a>(<span class="keyword">const</span> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference<BitField,ChannelBitSizes,Layout,IsMutable2></a>& p) : _bit_range(p._bit_range) {}</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">// Grayscale references can be constructed from the channel reference</span></div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">explicit</span> bit_aligned_pixel_reference(<span class="keyword">const</span> <span class="keyword">typename</span> kth_element_type<bit_aligned_pixel_reference,0>::type channel0) : _bit_range(static_cast<data_ptr_t>(&channel0), channel0.first_bit()) {</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  BOOST_STATIC_ASSERT((<a class="code" href="structboost_1_1gil_1_1num__channels.html">num_channels<bit_aligned_pixel_reference>::value</a>==1));</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  }</div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// Construct from another compatible pixel type</span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  bit_aligned_pixel_reference(<span class="keyword">const</span> bit_aligned_pixel_reference& p) : _bit_range(p._bit_range) {}</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> BF, <span class="keyword">typename</span> CR> bit_aligned_pixel_reference(<a class="code" href="structboost_1_1gil_1_1packed__pixel.html">packed_pixel<BF,CR,Layout></a>& p) : _bit_range(static_cast<data_ptr_t>(&gil::at_c<0>(p)), gil::at_c<0>(p).first_bit()) {</div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  check_compatible<packed_pixel<BF,CR,Layout> >();</div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  }</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keyword">const</span> bit_aligned_pixel_reference& operator=(<span class="keyword">const</span> bit_aligned_pixel_reference& p)<span class="keyword"> const </span>{ static_copy(p,*<span class="keyword">this</span>); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> P> <span class="keyword">const</span> bit_aligned_pixel_reference& operator=(<span class="keyword">const</span> P& p)<span class="keyword"> const </span>{ assign(p, mpl::bool_<is_pixel<P>::value>()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; } </div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> </div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> P> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> P& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> equal(p, mpl::bool_<is_pixel<P>::value>()); } </div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> P> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> P& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> !(*<span class="keyword">this</span>==p); }</div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keyword">const</span> bit_aligned_pixel_reference* operator->()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">this</span>; }</div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> </div>
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<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">const</span> bit_range_t& bit_range()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _bit_range; }</div>
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<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">mutable</span> bit_range_t _bit_range;</div>
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<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M> <span class="keyword">friend</span> <span class="keyword">struct </span>bit_aligned_pixel_reference;</div>
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<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
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<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <span class="keyword">static</span> <span class="keywordtype">void</span> check_compatible() { gil_function_requires<PixelsCompatibleConcept<Pixel,bit_aligned_pixel_reference> >(); }</div>
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<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
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<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <span class="keywordtype">void</span> assign(<span class="keyword">const</span> Pixel& p, mpl::true_)<span class="keyword"> const </span>{ check_compatible<Pixel>(); static_copy(p,*<span class="keyword">this</span>); } </div>
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <span class="keywordtype">bool</span> <a class="code" href="group___s_t_l_optimizations.html#ga2902a23650ef266e80874ce5df076079">equal</a>(<span class="keyword">const</span> Pixel& p, mpl::true_)<span class="keyword"> const </span>{ check_compatible<Pixel>(); <span class="keywordflow">return</span> static_equal(*<span class="keyword">this</span>,p); } </div>
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
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<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> check_gray() { BOOST_STATIC_ASSERT((is_same<typename Layout::color_space_t, gray_t>::value)); }</div>
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<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Channel> <span class="keywordtype">void</span> assign(<span class="keyword">const</span> Channel& chan, mpl::false_)<span class="keyword"> const </span>{ check_gray(); gil::at_c<0>(*this)=chan; }</div>
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<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Channel> <span class="keywordtype">bool</span> <a class="code" href="group___s_t_l_optimizations.html#ga2902a23650ef266e80874ce5df076079">equal</a> (<span class="keyword">const</span> Channel& chan, mpl::false_)<span class="keyword"> const </span>{ check_gray(); <span class="keywordflow">return</span> gil::at_c<0>(*this)==chan; }</div>
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<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> };</div>
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<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
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<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment">// ColorBasedConcept</span></div>
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<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment"></span></div>
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<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelBitSizes, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> IsMutable, <span class="keywordtype">int</span> K> </div>
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<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="keyword">struct </span>kth_element_type<<a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a><BitField,ChannelBitSizes,L,IsMutable>, K> {</div>
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keyword">typedef</span> <span class="keyword">const</span> packed_dynamic_channel_reference<BitField, mpl::at_c<ChannelBitSizes,K>::type::value, IsMutable> type;</div>
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<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> };</div>
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<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div>
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M, <span class="keywordtype">int</span> K> </div>
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<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="keyword">struct </span>kth_element_reference_type<bit_aligned_pixel_reference<B,C,L,M>, K></div>
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  : <span class="keyword">public</span> kth_element_type<bit_aligned_pixel_reference<B,C,L,M>, K> {};</div>
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<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
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<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M, <span class="keywordtype">int</span> K> </div>
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<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">struct </span>kth_element_const_reference_type<bit_aligned_pixel_reference<B,C,L,M>, K></div>
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<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  : <span class="keyword">public</span> kth_element_type<bit_aligned_pixel_reference<B,C,L,M>, K> {};</div>
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<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> </div>
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<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
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<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="keyword">namespace </span>detail {</div>
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<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="comment">// returns sum of IntegralVector[0] ... IntegralVector[K-1]</span></div>
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<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> IntegralVector, <span class="keywordtype">int</span> K> </div>
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<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">struct </span>sum_k : <span class="keyword">public</span> mpl::plus<sum_k<IntegralVector,K-1>, typename mpl::at_c<IntegralVector,K-1>::type > {};</div>
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<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> IntegralVector> <span class="keyword">struct </span>sum_k<IntegralVector,0> : <span class="keyword">public</span> mpl::int_<0> {};</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> }</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="comment">// at_c required by MutableColorBaseConcept</span></div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelBitSizes, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> Mutable> <span class="keyword">inline</span></div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">typename</span> kth_element_reference_type<bit_aligned_pixel_reference<BitField,ChannelBitSizes,L,Mutable>,K>::type</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> at_c(<span class="keyword">const</span> bit_aligned_pixel_reference<BitField,ChannelBitSizes,L,Mutable>& p) { </div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keyword">typedef</span> bit_aligned_pixel_reference<BitField,ChannelBitSizes,L,Mutable> pixel_t;</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> kth_element_reference_type<pixel_t,K>::type channel_t;</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> pixel_t::bit_range_t bit_range_t;</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  bit_range_t bit_range(p.bit_range());</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  bit_range.bit_advance(detail::sum_k<ChannelBitSizes,K>::value);</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">return</span> channel_t(bit_range.current_byte(), bit_range.bit_offset()); </div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span> }</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment">// PixelConcept</span></div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="comment"></span></div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M> </div>
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<div class="line"><a name="l00226"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1is__pixel_3_01bit__aligned__pixel__reference_3_01_b_00_01_c_00_01_l_00_01_m_01_4_01_4.html"> 226</a></span> <span class="keyword">struct </span>is_pixel<<a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a><B,C,L,M> > : <span class="keyword">public</span> mpl::true_{};</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="comment">// PixelBasedConcept</span></div>
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<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> <span class="comment"></span></div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M></div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> <span class="keyword">struct </span>color_space_type<<a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">bit_aligned_pixel_reference</a><B,C,L,M> > {</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> L::color_space_t type;</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> }; </div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> </div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M></div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="keyword">struct </span>channel_mapping_type<bit_aligned_pixel_reference<B,C,L,M> > {</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> L::channel_mapping_t type;</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> }; </div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> </div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keywordtype">bool</span> M></div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="keyword">struct </span>is_planar<bit_aligned_pixel_reference<B,C,L,M> > : mpl::false_ {}; </div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment">// pixel_reference_type</span></div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="comment"></span></div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="keyword">namespace </span>detail {</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="comment">// returns a vector containing K copies of the type T</span></div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">template</span> <<span class="keywordtype">unsigned</span> K, <span class="keyword">typename</span> T> <span class="keyword">struct </span>k_copies;</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">struct </span>k_copies<0,T> {</div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keyword">typedef</span> mpl::vector0<> type;</div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  };</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keyword">template</span> <<span class="keywordtype">unsigned</span> K, <span class="keyword">typename</span> T> <span class="keyword">struct </span>k_copies : <span class="keyword">public</span> mpl::push_back<typename k_copies<K-1,T>::type, T> {};</div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> }</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment">// Constructs a homogeneous bit_aligned_pixel_reference given a channel reference</span></div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keywordtype">int</span> NumBits, <span class="keyword">typename</span> Layout> </div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="keyword">struct </span>pixel_reference_type<const packed_dynamic_channel_reference<BitField,NumBits,false>, Layout, false, false> {</div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> mpl::size<typename Layout::color_space_t>::type size_t;</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> detail::k_copies<size_t::value,mpl::integral_c<unsigned,NumBits> >::type channel_bit_sizes_t;</div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keyword">typedef</span> bit_aligned_pixel_reference<BitField, channel_bit_sizes_t, Layout, false> type;</div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> };</div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> </div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="comment">// Same but for the mutable case. We cannot combine the mutable and read-only cases because this triggers ambiguity</span></div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keywordtype">int</span> NumBits, <span class="keyword">typename</span> Layout> </div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="keyword">struct </span>pixel_reference_type<const packed_dynamic_channel_reference<BitField,NumBits,true>, Layout, false, true> {</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> mpl::size<typename Layout::color_space_t>::type size_t;</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> detail::k_copies<size_t::value,mpl::integral_c<unsigned,NumBits> >::type channel_bit_sizes_t;</div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keyword">typedef</span> bit_aligned_pixel_reference<BitField, channel_bit_sizes_t, Layout, true> type;</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> };</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> } } <span class="comment">// namespace boost::gil</span></div>
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<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="keyword">namespace </span>std {</div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment">// We are forced to define swap inside std namespace because on some platforms (Visual Studio 8) STL calls swap qualified.</span></div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment">// swap with 'left bias': </span></div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment">// - swap between proxy and anything</span></div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment">// - swap between value type and proxy</span></div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment">// - swap between proxy and proxy</span></div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment">// Having three overloads allows us to swap between different (but compatible) models of PixelConcept</span></div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L, <span class="keyword">typename</span> R> <span class="keyword">inline</span></div>
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="keywordtype">void</span> swap(<span class="keyword">const</span> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">boost::gil::bit_aligned_pixel_reference<B,C,L,true></a> x, R& y) { </div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  boost::gil::swap_proxy<typename boost::gil::bit_aligned_pixel_reference<B,C,L,true>::value_type>(x,y); </div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> }</div>
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<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> </div>
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L> <span class="keyword">inline</span></div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> <span class="keywordtype">void</span> swap(<span class="keyword">typename</span> <a class="code" href="structboost_1_1gil_1_1packed__pixel.html">boost::gil::bit_aligned_pixel_reference<B,C,L,true>::value_type</a>& x, <span class="keyword">const</span> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">boost::gil::bit_aligned_pixel_reference<B,C,L,true></a> y) { </div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  boost::gil::swap_proxy<typename boost::gil::bit_aligned_pixel_reference<B,C,L,true>::value_type>(x,y); </div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> }</div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div>
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<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> </div>
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<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="keyword">template</span> <<span class="keyword">typename</span> B, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L> <span class="keyword">inline</span></div>
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<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> <span class="keywordtype">void</span> swap(<span class="keyword">const</span> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">boost::gil::bit_aligned_pixel_reference<B,C,L,true></a> x, <span class="keyword">const</span> <a class="code" href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">boost::gil::bit_aligned_pixel_reference<B,C,L,true></a> y) { </div>
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<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  boost::gil::swap_proxy<typename boost::gil::bit_aligned_pixel_reference<B,C,L,true>::value_type>(x,y); </div>
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<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> }</div>
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<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> } <span class="comment">// namespace std</span></div>
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<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="preprocessor">#endif</span></div>
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<div class="ttc" id="channel_8hpp_html"><div class="ttname"><a href="channel_8hpp.html">channel.hpp</a></div><div class="ttdoc">Channel utilities. </div></div>
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<div class="ttc" id="structboost_1_1gil_1_1bit__aligned__pixel__reference_html"><div class="ttname"><a href="structboost_1_1gil_1_1bit__aligned__pixel__reference.html">boost::gil::bit_aligned_pixel_reference</a></div><div class="ttdoc">Heterogeneous pixel reference corresponding to non-byte-aligned bit range. Models ColorBaseConcept...</div><div class="ttdef"><b>Definition:</b> bit_aligned_pixel_reference.hpp:125</div></div>
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<div class="ttc" id="group___s_t_l_optimizations_html_ga2902a23650ef266e80874ce5df076079"><div class="ttname"><a href="group___s_t_l_optimizations.html#ga2902a23650ef266e80874ce5df076079">std::equal</a></div><div class="ttdeci">BOOST_FORCEINLINE bool equal(boost::gil::iterator_from_2d< Loc1 > first, boost::gil::iterator_from_2d< Loc1 > last, boost::gil::iterator_from_2d< Loc2 > first2)</div><div class="ttdoc">std::equal(I1,I1,I2) with I1 and I2 being a iterator_from_2d </div><div class="ttdef"><b>Definition:</b> algorithm.hpp:934</div></div>
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<div class="ttc" id="gil__config_8hpp_html"><div class="ttname"><a href="gil__config_8hpp.html">gil_config.hpp</a></div><div class="ttdoc">GIL configuration file. </div></div>
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<div class="ttc" id="structboost_1_1gil_1_1packed__pixel_html"><div class="ttname"><a href="structboost_1_1gil_1_1packed__pixel.html">boost::gil::packed_pixel</a></div><div class="ttdoc">Heterogeneous pixel value whose channel references can be constructed from the pixel bitfield and the...</div><div class="ttdef"><b>Definition:</b> gil_concept.hpp:83</div></div>
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<div class="ttc" id="pixel_8hpp_html"><div class="ttname"><a href="pixel_8hpp.html">pixel.hpp</a></div><div class="ttdoc">pixel class and related utilities </div></div>
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<div class="ttc" id="structboost_1_1gil_1_1num__channels_html"><div class="ttname"><a href="structboost_1_1gil_1_1num__channels.html">boost::gil::num_channels</a></div><div class="ttdoc">Returns the number of channels of a pixel-based GIL construct. </div><div class="ttdef"><b>Definition:</b> gil_concept.hpp:66</div></div>
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