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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">// Copyright 2005-2007 Adobe Systems Incorporated</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">// Distributed under the Boost Software License, Version 1.0</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <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> <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> <span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef BOOST_GIL_PACKED_PIXEL_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define BOOST_GIL_PACKED_PIXEL_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <boost/gil/pixel.hpp></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <boost/core/ignore_unused.hpp></span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <boost/mpl/bool.hpp></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <boost/mpl/front.hpp></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <functional></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">namespace </span><a class="code" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">template</span> <<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="l00049"></a><span class="lineno"> 49</span>  <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="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">typename</span> Layout> <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="l00051"></a><span class="lineno"> 51</span> <span class="keyword">struct </span>packed_pixel</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>  BitField _bitfield;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">using</span> layout_t = Layout;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">using</span> value_type = packed_pixel<BitField, ChannelRefVec, Layout>;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">using</span> reference = value_type&;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">using</span> const_reference = value_type <span class="keyword">const</span>&;</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>  <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> is_mutable =</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  channel_traits<typename mpl::front<ChannelRefVec>::type>::is_mutable;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  packed_pixel(){}</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">explicit</span> packed_pixel(<span class="keyword">const</span> BitField& bitfield) : _bitfield(bitfield) {}</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// Construct from another compatible pixel type</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  packed_pixel(<span class="keyword">const</span> packed_pixel& p) : _bitfield(p._bitfield) {}</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> P></div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  packed_pixel(P <span class="keyword">const</span>& p,</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">typename</span> std::enable_if<is_pixel<P>::value>::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  check_compatible<P>();</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  static_copy(p, *<span class="keyword">this</span>);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1) : _bitfield(0) {</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  static_assert(num_channels<packed_pixel>::value == 2, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  gil::at_c<0>(*this)=chan0; gil::at_c<1>(*this)=chan1;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  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="l00082"></a><span class="lineno"> 82</span>  static_assert(num_channels<packed_pixel>::value == 3, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  gil::at_c<0>(*this) = chan0;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  gil::at_c<1>(*this) = chan1;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  gil::at_c<2>(*this) = chan2;</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  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="l00088"></a><span class="lineno"> 88</span>  static_assert(num_channels<packed_pixel>::value == 4, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  gil::at_c<0>(*this)=chan0; gil::at_c<1>(*this)=chan1; gil::at_c<2>(*this)=chan2; gil::at_c<3>(*this)=chan3;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  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="l00092"></a><span class="lineno"> 92</span>  static_assert(num_channels<packed_pixel>::value == 5, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  gil::at_c<0>(*this)=chan0; gil::at_c<1>(*this)=chan1; gil::at_c<2>(*this)=chan2; gil::at_c<3>(*this)=chan3; gil::at_c<4>(*this)=chan4;</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> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  packed_pixel& operator=(<span class="keyword">const</span> packed_pixel& p) { _bitfield=p._bitfield; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> P> packed_pixel& operator=(<span class="keyword">const</span> P& p) { assign(p, mpl::bool_<is_pixel<P>::value>()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</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><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</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><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</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,packed_pixel> >(); }</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</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_) { check_compatible<Pixel>(); static_copy(p,*<span class="keyword">this</span>); }</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel> <span class="keywordtype">bool</span> equal(<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><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment">// Support for assignment/equality comparison of a channel with a grayscale pixel</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> check_gray()</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  {</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  static_assert(is_same<typename Layout::color_space_t, gray_t>::value, <span class="stringliteral">""</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>  <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_) { check_gray(); gil::at_c<0>(*this)=chan; }</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Channel> <span class="keywordtype">bool</span> equal (<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><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  packed_pixel& operator= (<span class="keywordtype">int</span> chan) { check_gray(); gil::at_c<0>(*this)=chan; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <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<0>(*this)==chan; }</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> };</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment">// ColorBasedConcept</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"></span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefVec, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">struct </span>kth_element_type<packed_pixel<BitField,ChannelRefVec,Layout>,K> : <span class="keyword">public</span> <a class="code" href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">mpl::at_c</a><ChannelRefVec,K> {};</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefVec, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="keyword">struct </span>kth_element_reference_type<packed_pixel<BitField,ChannelRefVec,Layout>,K> : <span class="keyword">public</span> <a class="code" href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">mpl::at_c</a><ChannelRefVec,K> {};</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefVec, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">struct </span>kth_element_const_reference_type<packed_pixel<BitField,ChannelRefVec,Layout>,K></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> {</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">using</span> type = <span class="keyword">typename</span> channel_traits<typename mpl::at_c<ChannelRefVec,K>::type>::const_reference;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> };</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L> <span class="keyword">inline</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">typename</span> kth_element_reference_type<packed_pixel<P,C,L>, K>::type</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <a class="code" href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">at_c</a>(packed_pixel<P,C,L>& p) {</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span> <span class="keyword">typename</span> kth_element_reference_type<packed_pixel<P,C,L>, K>::type(&p._bitfield);</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> }</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L> <span class="keyword">inline</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="keyword">typename</span> kth_element_const_reference_type<packed_pixel<P,C,L>, K>::type</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <a class="code" href="group___color_base_model_homogeneous.html#ga6fb9de37a524b47bd591e1528809b24f">at_c</a>(<span class="keyword">const</span> packed_pixel<P,C,L>& p) {</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> <span class="keyword">typename</span> kth_element_const_reference_type<packed_pixel<P,C,L>, K>::type(&p._bitfield);</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> }</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment">// PixelConcept</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"></span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment">// Metafunction predicate that flags packed_pixel as a model of PixelConcept. Required by PixelConcept</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefVec, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="keyword">struct </span>is_pixel<packed_pixel<BitField,ChannelRefVec,Layout> > : <span class="keyword">public</span> mpl::true_{};</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment">// PixelBasedConcept</span></div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment"></span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="keyword">struct </span>color_space_type<packed_pixel<P,C,Layout> > {</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">using</span> type = <span class="keyword">typename</span> Layout::color_space_t;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> };</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="keyword">struct </span>channel_mapping_type<packed_pixel<P,C,Layout> > {</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">using</span> type = <span class="keyword">typename</span> Layout::channel_mapping_t;</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> };</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="keyword">struct </span>is_planar<packed_pixel<P,C,Layout> > : mpl::false_ {};</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> </div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="keyword">struct </span>iterator_is_mutable<packed_pixel<P,C,L>*> : <span class="keyword">public</span> mpl::bool_<packed_pixel<P,C,L>::is_mutable> {};</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="keyword">struct </span>iterator_is_mutable<const packed_pixel<P,C,L>*> : <span class="keyword">public</span> mpl::false_ {};</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> } } <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">namespace </span><a class="code" href="namespaceboost.html">boost</a> {</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keyword">struct </span>has_trivial_constructor<gil::packed_pixel<P,C,L> > : <span class="keyword">public</span> has_trivial_constructor<P> {};</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> }</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="namespaceboost_html"><div class="ttname"><a href="namespaceboost.html">boost</a></div><div class="ttdef"><b>Definition:</b> algorithm.hpp:30</div></div>
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<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< E >::type at_c(detail::homogeneous_color_base< E, L, N > &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:387</div></div>
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