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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="preprocessor">#ifndef BOOST_GIL_PACKED_PIXEL_HPP</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define BOOST_GIL_PACKED_PIXEL_HPP</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &lt;boost/gil/pixel.hpp&gt;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &lt;boost/core/ignore_unused.hpp&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &lt;boost/utility/enable_if.hpp&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="preprocessor">#include &lt;boost/mpl/bool.hpp&gt;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &lt;boost/mpl/front.hpp&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &lt;functional&gt;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="comment">// A type that holds the bits of the pixel. Typically an integral type, like std::uint16_t</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <span class="keyword">typename</span> ChannelRefVec, <span class="comment">// An MPL vector whose elements are packed channels. They must be constructible from BitField. GIL uses packed_channel_reference</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keyword">typename</span> Layout&gt; <span class="comment">// Layout defining the color space and ordering of the channels. Example value: rgb_layout_t</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="keyword">struct </span>packed_pixel {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; BitField _bitfield;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keyword">typedef</span> Layout layout_t;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keyword">typedef</span> packed_pixel value_type;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keyword">typedef</span> value_type&amp; reference;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keyword">typedef</span> <span class="keyword">const</span> value_type&amp; const_reference;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; BOOST_STATIC_CONSTANT(<span class="keywordtype">bool</span>, is_mutable = channel_traits&lt;<span class="keyword">typename</span> mpl::front&lt;ChannelRefVec&gt;::type&gt;::is_mutable);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; packed_pixel(){}</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keyword">explicit</span> packed_pixel(<span class="keyword">const</span> BitField&amp; bitfield) : _bitfield(bitfield) {}</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="comment">// Construct from another compatible pixel type</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; packed_pixel(<span class="keyword">const</span> packed_pixel&amp; p) : _bitfield(p._bitfield) {}</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; packed_pixel(<span class="keyword">const</span> P&amp; p, <span class="keyword">typename</span> enable_if_c&lt;is_pixel&lt;P&gt;::value&gt;::type* d=0) {</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; check_compatible&lt;P&gt;(); static_copy(p,*<span class="keyword">this</span>);</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; boost::ignore_unused(d);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; }</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1) : _bitfield(0) {</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; BOOST_STATIC_ASSERT((num_channels&lt;packed_pixel&gt;::value==2));</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; gil::at_c&lt;0&gt;(*this)=chan0; gil::at_c&lt;1&gt;(*this)=chan1;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1, <span class="keywordtype">int</span> chan2) : _bitfield(0) {</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; BOOST_STATIC_ASSERT((num_channels&lt;packed_pixel&gt;::value==3));</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; gil::at_c&lt;0&gt;(*this) = chan0;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; gil::at_c&lt;1&gt;(*this) = chan1;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; gil::at_c&lt;2&gt;(*this) = chan2;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160; packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1, <span class="keywordtype">int</span> chan2, <span class="keywordtype">int</span> chan3) : _bitfield(0) {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; BOOST_STATIC_ASSERT((num_channels&lt;packed_pixel&gt;::value==4));</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; gil::at_c&lt;0&gt;(*this)=chan0; gil::at_c&lt;1&gt;(*this)=chan1; gil::at_c&lt;2&gt;(*this)=chan2; gil::at_c&lt;3&gt;(*this)=chan3;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1, <span class="keywordtype">int</span> chan2, <span class="keywordtype">int</span> chan3, <span class="keywordtype">int</span> chan4) : _bitfield(0) {</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; BOOST_STATIC_ASSERT((num_channels&lt;packed_pixel&gt;::value==5));</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; gil::at_c&lt;0&gt;(*this)=chan0; gil::at_c&lt;1&gt;(*this)=chan1; gil::at_c&lt;2&gt;(*this)=chan2; gil::at_c&lt;3&gt;(*this)=chan3; gil::at_c&lt;4&gt;(*this)=chan4;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; }</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; packed_pixel&amp; operator=(<span class="keyword">const</span> packed_pixel&amp; p) { _bitfield=p._bitfield; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; packed_pixel&amp; operator=(<span class="keyword">const</span> P&amp; p) { assign(p, mpl::bool_&lt;is_pixel&lt;P&gt;::value&gt;()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> P&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> equal(p, mpl::bool_&lt;is_pixel&lt;P&gt;::value&gt;()); }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P&gt; <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> P&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> !(*<span class="keyword">this</span>==p); }</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt; <span class="keyword">static</span> <span class="keywordtype">void</span> check_compatible() { gil_function_requires&lt;PixelsCompatibleConcept&lt;Pixel,packed_pixel&gt; &gt;(); }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt; <span class="keywordtype">void</span> assign(<span class="keyword">const</span> Pixel&amp; p, mpl::true_) { check_compatible&lt;Pixel&gt;(); static_copy(p,*<span class="keyword">this</span>); }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel&gt; <span class="keywordtype">bool</span> equal(<span class="keyword">const</span> Pixel&amp; p, mpl::true_)<span class="keyword"> const </span>{ check_compatible&lt;Pixel&gt;(); <span class="keywordflow">return</span> static_equal(*<span class="keyword">this</span>,p); }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment">// Support for assignment/equality comparison of a channel with a grayscale pixel</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keyword">static</span> <span class="keywordtype">void</span> check_gray() { BOOST_STATIC_ASSERT((is_same&lt;typename Layout::color_space_t, gray_t&gt;::value)); }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Channel&gt; <span class="keywordtype">void</span> assign(<span class="keyword">const</span> Channel&amp; chan, mpl::false_) { check_gray(); gil::at_c&lt;0&gt;(*this)=chan; }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Channel&gt; <span class="keywordtype">bool</span> equal (<span class="keyword">const</span> Channel&amp; chan, mpl::false_)<span class="keyword"> const </span>{ check_gray(); <span class="keywordflow">return</span> gil::at_c&lt;0&gt;(*this)==chan; }</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; packed_pixel&amp; operator= (<span class="keywordtype">int</span> chan) { check_gray(); gil::at_c&lt;0&gt;(*this)=chan; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordtype">bool</span> operator==(<span class="keywordtype">int</span> chan)<span class="keyword"> const </span>{ check_gray(); <span class="keywordflow">return</span> gil::at_c&lt;0&gt;(*this)==chan; }</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;};</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;<span class="comment">// ColorBasedConcept</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefVec, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K&gt;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;<span class="keyword">struct </span>kth_element_type&lt;packed_pixel&lt;BitField,ChannelRefVec,Layout&gt;,K&gt; : <span class="keyword">public</span> <a class="code" href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">mpl::at_c</a>&lt;ChannelRefVec,K&gt; {};</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefVec, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K&gt;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160;<span class="keyword">struct </span>kth_element_reference_type&lt;packed_pixel&lt;BitField,ChannelRefVec,Layout&gt;,K&gt; : <span class="keyword">public</span> <a class="code" href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">mpl::at_c</a>&lt;ChannelRefVec,K&gt; {};</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefVec, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K&gt;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;<span class="keyword">struct </span>kth_element_const_reference_type&lt;packed_pixel&lt;BitField,ChannelRefVec,Layout&gt;,K&gt; {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keyword">typedef</span> <span class="keyword">typename</span> channel_traits&lt;typename mpl::at_c&lt;ChannelRefVec,K&gt;::type&gt;::const_reference type;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;};</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">int</span> K, <span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L&gt; <span class="keyword">inline</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160;<span class="keyword">typename</span> kth_element_reference_type&lt;packed_pixel&lt;P,C,L&gt;, K&gt;::type</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160;<a class="code" href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">at_c</a>(packed_pixel&lt;P,C,L&gt;&amp; p) {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160; <span class="keywordflow">return</span> <span class="keyword">typename</span> kth_element_reference_type&lt;packed_pixel&lt;P,C,L&gt;, K&gt;::type(&amp;p._bitfield);</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;}</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160;<span class="keyword">template</span> &lt;<span class="keywordtype">int</span> K, <span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L&gt; <span class="keyword">inline</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160;<span class="keyword">typename</span> kth_element_const_reference_type&lt;packed_pixel&lt;P,C,L&gt;, K&gt;::type</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;<a class="code" href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">at_c</a>(<span class="keyword">const</span> packed_pixel&lt;P,C,L&gt;&amp; p) {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; <span class="keywordflow">return</span> <span class="keyword">typename</span> kth_element_const_reference_type&lt;packed_pixel&lt;P,C,L&gt;, K&gt;::type(&amp;p._bitfield);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;}</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;<span class="comment">// PixelConcept</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160;<span class="comment">// Metafunction predicate that flags packed_pixel as a model of PixelConcept. Required by PixelConcept</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefVec, <span class="keyword">typename</span> Layout&gt;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160;<span class="keyword">struct </span>is_pixel&lt;packed_pixel&lt;BitField,ChannelRefVec,Layout&gt; &gt; : <span class="keyword">public</span> mpl::true_{};</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160;<span class="comment">// PixelBasedConcept</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout&gt;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160;<span class="keyword">struct </span>color_space_type&lt;packed_pixel&lt;P,C,Layout&gt; &gt; {</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; <span class="keyword">typedef</span> <span class="keyword">typename</span> Layout::color_space_t type;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160;};</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout&gt;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160;<span class="keyword">struct </span>channel_mapping_type&lt;packed_pixel&lt;P,C,Layout&gt; &gt; {</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keyword">typedef</span> <span class="keyword">typename</span> Layout::channel_mapping_t type;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;};</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160;</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout&gt;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;<span class="keyword">struct </span>is_planar&lt;packed_pixel&lt;P,C,Layout&gt; &gt; : mpl::false_ {};</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L&gt;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160;<span class="keyword">struct </span>iterator_is_mutable&lt;packed_pixel&lt;P,C,L&gt;*&gt; : <span class="keyword">public</span> mpl::bool_&lt;packed_pixel&lt;P,C,L&gt;::is_mutable&gt; {};</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L&gt;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160;<span class="keyword">struct </span>iterator_is_mutable&lt;const packed_pixel&lt;P,C,L&gt;*&gt; : <span class="keyword">public</span> mpl::false_ {};</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160;} } <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160;<span class="keyword">namespace </span>boost {</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; <span class="keyword">template</span> &lt;<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L&gt;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; <span class="keyword">struct </span>has_trivial_constructor&lt;gil::packed_pixel&lt;P,C,L&gt; &gt; : <span class="keyword">public</span> has_trivial_constructor&lt;P&gt; {};</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160;}</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="group___color_base_model_homogeneous_html_ga6fb9de37a524b47bd591e1528809b24f"><div class="ttname"><a href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">boost::gil::at_c</a></div><div class="ttdeci">add_reference&lt; E &gt;::type at_c(detail::homogeneous_color_base&lt; E, L, N &gt; &amp;p)</div><div class="ttdoc">Provides mutable access to the K-th element, in physical order. </div><div class="ttdef"><b>Definition:</b> color_base.hpp:381</div></div>
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