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<div class="headertitle"><div class="title">image_view_factory.hpp</div></div>
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<div class="contents">
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//</span></div>
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<div class="line"><a id="l00002" 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 id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div>
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<div class="line"><a id="l00006" 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 id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#ifndef BOOST_GIL_IMAGE_VIEW_FACTORY_HPP</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_IMAGE_VIEW_FACTORY_HPP</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include <boost/gil/color_convert.hpp></span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include <boost/gil/dynamic_step.hpp></span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include <boost/gil/gray.hpp></span></div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include <boost/gil/image_view.hpp></span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include <boost/gil/metafunctions.hpp></span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include <boost/gil/point.hpp></span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <boost/gil/detail/mp11.hpp></span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <boost/assert.hpp></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include <cstddef></span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <type_traits></span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> </div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> </div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="keyword">struct </span>default_color_converter;</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="keyword">template</span> <<span class="keyword">typename</span> T> <span class="keyword">struct </span>transposed_type;</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="foldopen" id="foldopen00045" data-start="{" data-end="};">
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1dynamic__xy__step__type.html"> 45</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1dynamic__xy__step__type.html">dynamic_xy_step_type</a></div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> : <a class="code hl_struct" href="structboost_1_1gil_1_1dynamic__y__step__type.html">dynamic_y_step_type</a><typename dynamic_x_step_type<View>::type> {};</div>
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</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="foldopen" id="foldopen00051" data-start="{" data-end="};">
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1dynamic__xy__step__transposed__type.html"> 51</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1dynamic__xy__step__transposed__type.html">dynamic_xy_step_transposed_type</a></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> : <a class="code hl_struct" href="structboost_1_1gil_1_1dynamic__xy__step__type.html">dynamic_xy_step_type</a><typename transposed_type<View>::type> {};</div>
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</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="keyword">template</span> <<span class="keyword">typename</span> Iterator></div>
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<div class="foldopen" id="foldopen00057" data-start="{" data-end="}">
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"><a class="line" href="group___image_view_constructors.html#ga1e3e7badf5c1a0cf3ed1e4028525fba5"> 57</a></span><span class="keyword">auto</span> <a class="code hl_function" href="group___image_view_constructors.html#ga1e3e7badf5c1a0cf3ed1e4028525fba5">interleaved_view</a>(</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> std::size_t width, std::size_t height,</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> Iterator pixels, std::ptrdiff_t rowsize_in_bytes)</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> -> <span class="keyword">typename</span> <a class="code hl_class" href="classboost_1_1gil_1_1image__view.html">type_from_x_iterator<Iterator>::view_t</a></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span>{</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">using </span>RView = <span class="keyword">typename</span> <a class="code hl_class" href="classboost_1_1gil_1_1image__view.html">type_from_x_iterator<Iterator>::view_t</a>;</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keywordflow">return</span> RView(width, height, <span class="keyword">typename</span> RView::locator(pixels, rowsize_in_bytes));</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span>}</div>
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</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span><span class="keyword">template</span> <<span class="keyword">typename</span> Iterator></div>
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<div class="foldopen" id="foldopen00069" data-start="{" data-end="}">
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"><a class="line" href="group___image_view_constructors.html#ga000586109c19b480d27fb543e4d4488c"> 69</a></span><span class="keyword">auto</span> <a class="code hl_function" href="group___image_view_constructors.html#ga1e3e7badf5c1a0cf3ed1e4028525fba5">interleaved_view</a>(</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <a class="code hl_class" href="classboost_1_1gil_1_1point.html">point<std::ptrdiff_t></a> dim, Iterator pixels,</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> std::ptrdiff_t rowsize_in_bytes)</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> -> <span class="keyword">typename</span> <a class="code hl_class" href="classboost_1_1gil_1_1image__view.html">type_from_x_iterator<Iterator>::view_t</a></div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span>{</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">using </span>RView = <span class="keyword">typename</span> <a class="code hl_class" href="classboost_1_1gil_1_1image__view.html">type_from_x_iterator<Iterator>::view_t</a>;</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span> RView(dim, <span class="keyword">typename</span> RView::locator(pixels, rowsize_in_bytes));</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>}</div>
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</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span><span class="comment">// interleaved_view_get_raw_data, planar_view_get_raw_data - return pointers to the raw data (the channels) of a basic homogeneous view.</span></div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="keyword">namespace </span>detail {</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View, <span class="keywordtype">bool</span> IsMutable></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="keyword">struct </span>channel_pointer_type_impl;</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">struct </span>channel_pointer_type_impl<View, true></div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> {</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> channel_type<View>::type*;</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> };</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> </div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keyword">struct </span>channel_pointer_type_impl<View, false></div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> {</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">using </span>type = <span class="keyword">const</span> <span class="keyword">typename</span> channel_type<View>::type*;</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> };</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> </div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">struct </span>channel_pointer_type</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> : <span class="keyword">public</span> channel_pointer_type_impl<View, view_is_mutable<View>::value> {};</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span>} <span class="comment">// namespace detail</span></div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> </div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="keyword">template</span> <<span class="keyword">typename</span> HomogeneousView></div>
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<div class="foldopen" id="foldopen00106" data-start="{" data-end="}">
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"><a class="line" href="group___image_view_constructors.html#gab692eeedd8c309b09b47590e593cce36"> 106</a></span><span class="keyword">auto</span> <a class="code hl_function" href="group___image_view_constructors.html#gab692eeedd8c309b09b47590e593cce36">interleaved_view_get_raw_data</a>(HomogeneousView <span class="keyword">const</span>& <a class="code hl_function" href="group___image_model.html#ga11e52868409ba2d52a93213ee39f4fde">view</a>)</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> -> <span class="keyword">typename</span> detail::channel_pointer_type<HomogeneousView>::type</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span>{</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">static_assert</span>(!is_planar<HomogeneousView>::value && <a class="code hl_struct" href="structboost_1_1gil_1_1view__is__basic.html">view_is_basic<HomogeneousView>::value</a>, <span class="stringliteral">""</span>);</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">static_assert</span>(std::is_pointer<typename HomogeneousView::x_iterator>::value, <span class="stringliteral">""</span>);</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keywordflow">return</span> &gil::at_c<0>(<a class="code hl_function" href="group___image_model.html#ga11e52868409ba2d52a93213ee39f4fde">view</a>(0,0));</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span>}</div>
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</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span><span class="keyword">template</span> <<span class="keyword">typename</span> HomogeneousView></div>
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<div class="foldopen" id="foldopen00118" data-start="{" data-end="}">
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"><a class="line" href="group___image_view_constructors.html#ga52bceca4653b4605252a0829616a22fa"> 118</a></span><span class="keyword">auto</span> <a class="code hl_function" href="group___image_view_constructors.html#ga52bceca4653b4605252a0829616a22fa">planar_view_get_raw_data</a>(HomogeneousView <span class="keyword">const</span>& <a class="code hl_function" href="group___image_model.html#ga11e52868409ba2d52a93213ee39f4fde">view</a>, <span class="keywordtype">int</span> plane_index)</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> -> <span class="keyword">typename</span> detail::channel_pointer_type<HomogeneousView>::type</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span>{</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keyword">static_assert</span>(is_planar<HomogeneousView>::value && <a class="code hl_struct" href="structboost_1_1gil_1_1view__is__basic.html">view_is_basic<HomogeneousView>::value</a>, <span class="stringliteral">""</span>);</div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keywordflow">return</span> dynamic_at_c(<a class="code hl_function" href="group___image_model.html#ga11e52868409ba2d52a93213ee39f4fde">view</a>.row_begin(0),plane_index);</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span>}</div>
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</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> </div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> </div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> </div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span><span class="keyword">template</span> <<span class="keyword">typename</span> SrcConstRefP, <span class="keyword">typename</span> DstP, <span class="keyword">typename</span> CC=default_color_converter > <span class="comment">// const_reference to the source pixel and destination pixel value</span></div>
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<div class="foldopen" id="foldopen00135" data-start="{" data-end="};">
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1color__convert__deref__fn.html"> 135</a></span><span class="keyword">class </span><a class="code hl_class" href="classboost_1_1gil_1_1color__convert__deref__fn.html">color_convert_deref_fn</a> : <span class="keyword">public</span> <a class="code hl_struct" href="structboost_1_1gil_1_1deref__base.html">deref_base</a><color_convert_deref_fn<SrcConstRefP,DstP,CC>, DstP, DstP, const DstP&, SrcConstRefP, DstP, false> {</div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span><span class="keyword">private</span>:</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> CC _cc; <span class="comment">// color-converter</span></div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span><span class="keyword">public</span>:</div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <a class="code hl_class" href="classboost_1_1gil_1_1color__convert__deref__fn.html">color_convert_deref_fn</a>() {}</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> <a class="code hl_class" href="classboost_1_1gil_1_1color__convert__deref__fn.html">color_convert_deref_fn</a>(CC cc_in) : _cc(cc_in) {}</div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> </div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> DstP operator()(SrcConstRefP srcP)<span class="keyword"> const </span>{</div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> DstP dstP;</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> _cc(srcP,dstP);</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">return</span> dstP;</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> }</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span>};</div>
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</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> </div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span><span class="keyword">namespace </span>detail {</div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="comment">// Add color converter upon dereferencing</span></div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> <span class="keyword">template</span> <<span class="keyword">typename</span> SrcView, <span class="keyword">typename</span> CC, <span class="keyword">typename</span> DstP, <span class="keyword">typename</span> SrcP></div>
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<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keyword">struct </span>_color_converted_view_type {</div>
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<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keyword">using </span>deref_t = <a class="code hl_class" href="classboost_1_1gil_1_1color__convert__deref__fn.html">color_convert_deref_fn<typename SrcView::const_t::reference,DstP,CC></a>;</div>
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<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keyword">using </span>add_ref_t = <span class="keyword">typename</span> SrcView::template add_deref<deref_t>;</div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> add_ref_t::type;</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> <span class="keyword">static</span> type make(<span class="keyword">const</span> SrcView& sv,CC cc) {<span class="keywordflow">return</span> add_ref_t::make(sv,deref_t(cc));}</div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> };</div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> </div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> <span class="comment">// If the Src view has the same pixel type as the target, there is no need for color conversion</span></div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> <span class="keyword">template</span> <<span class="keyword">typename</span> SrcView, <span class="keyword">typename</span> CC, <span class="keyword">typename</span> DstP></div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">struct </span>_color_converted_view_type<SrcView,CC,DstP,DstP> {</div>
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<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> <span class="keyword">using </span>type = SrcView;</div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keyword">static</span> type make(<span class="keyword">const</span> SrcView& sv,CC) {<span class="keywordflow">return</span> sv;}</div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> };</div>
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<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span>} <span class="comment">// namespace detail</span></div>
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<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> </div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> </div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span><span class="keyword">template</span> <<span class="keyword">typename</span> SrcView, <span class="keyword">typename</span> DstP, <span class="keyword">typename</span> CC=default_color_converter></div>
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<div class="foldopen" id="foldopen00173" data-start="{" data-end="};">
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1color__converted__view__type.html"> 173</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1color__converted__view__type.html">color_converted_view_type</a> : <span class="keyword">public</span> detail::_color_converted_view_type<SrcView,</div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> CC,</div>
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<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> DstP,</div>
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<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> typename SrcView::value_type> {</div>
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<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> BOOST_GIL_CLASS_REQUIRE(DstP, boost::gil, <a class="code hl_struct" href="structboost_1_1gil_1_1_mutable_pixel_concept.html">MutablePixelConcept</a>)<span class="comment">//why does it have to be mutable???</span></div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span>};</div>
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</div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> </div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> </div>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span><span class="keyword">template</span> <<span class="keyword">typename</span> DstP, <span class="keyword">typename</span> View, <span class="keyword">typename</span> CC></div>
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<div class="foldopen" id="foldopen00184" data-start="{" data-end="}">
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<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"><a class="line" href="group___image_view_transformations_color_convert.html#gaa8b346919e5d977788715b06b2e687d5"> 184</a></span><span class="keyword">inline</span> <span class="keyword">auto</span> <a class="code hl_function" href="group___image_view_transformations_color_convert.html#gaa8b346919e5d977788715b06b2e687d5">color_converted_view</a>(View <span class="keyword">const</span>& src,CC cc)</div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> -> <span class="keyword">typename</span> color_converted_view_type<View,DstP,CC>::type</div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span>{</div>
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<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="structboost_1_1gil_1_1color__converted__view__type.html">color_converted_view_type<View,DstP,CC>::make</a>(src,cc);</div>
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<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span>}</div>
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</div>
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<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> </div>
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<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span><span class="keyword">template</span> <<span class="keyword">typename</span> DstP, <span class="keyword">typename</span> View></div>
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<div class="foldopen" id="foldopen00193" data-start="{" data-end="}">
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<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"><a class="line" href="group___image_view_transformations_color_convert.html#ga0c9fb65e8802f85d2b6889f2aba0e41f"> 193</a></span><span class="keyword">inline</span> <span class="keyword">auto</span> <a class="code hl_function" href="group___image_view_transformations_color_convert.html#gaa8b346919e5d977788715b06b2e687d5">color_converted_view</a>(View <span class="keyword">const</span>& src)</div>
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<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> -> <span class="keyword">typename</span> color_converted_view_type<View,DstP>::type</div>
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<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span>{</div>
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<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="keywordflow">return</span> color_converted_view<DstP>(src,<a class="code hl_struct" href="structboost_1_1gil_1_1default__color__converter.html">default_color_converter</a>());</div>
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<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span>}</div>
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</div>
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<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> </div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> </div>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span><span class="keyword">inline</span> <span class="keyword">auto</span> flipped_up_down_view(View <span class="keyword">const</span>& src)</div>
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<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> -> <span class="keyword">typename</span> dynamic_y_step_type<View>::type</div>
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<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span>{</div>
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<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> <span class="keyword">using </span>RView = <span class="keyword">typename</span> dynamic_y_step_type<View>::type;</div>
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<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <span class="keywordflow">return</span> RView(src.dimensions(),<span class="keyword">typename</span> RView::xy_locator(src.xy_at(0,src.height()-1),-1));</div>
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<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span>}</div>
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<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> </div>
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<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> </div>
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<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span><span class="keyword">inline</span> <span class="keyword">auto</span> flipped_left_right_view(View <span class="keyword">const</span>& src)</div>
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<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> -> <span class="keyword">typename</span> dynamic_x_step_type<View>::type</div>
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<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span>{</div>
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<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <span class="keyword">using </span>RView = <span class="keyword">typename</span> dynamic_x_step_type<View>::type;</div>
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<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keywordflow">return</span> RView(src.dimensions(),<span class="keyword">typename</span> RView::xy_locator(src.xy_at(src.width()-1,0),-1,1));</div>
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<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span>}</div>
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<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> </div>
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<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> </div>
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<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span><span class="keyword">inline</span> <span class="keyword">auto</span> transposed_view(View <span class="keyword">const</span>& src)</div>
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<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> -> <span class="keyword">typename</span> dynamic_xy_step_transposed_type<View>::type</div>
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<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span>{</div>
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<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> <span class="keyword">using </span>RView = <span class="keyword">typename</span> dynamic_xy_step_transposed_type<View>::type;</div>
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<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> <span class="keywordflow">return</span> RView(src.height(),src.width(),<span class="keyword">typename</span> RView::xy_locator(src.xy_at(0,0),1,1,<span class="keyword">true</span>));</div>
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<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span>}</div>
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> </div>
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<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> </div>
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span><span class="keyword">inline</span> <span class="keyword">auto</span> rotated90cw_view(View <span class="keyword">const</span>& src)</div>
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<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> -> <span class="keyword">typename</span> dynamic_xy_step_transposed_type<View>::type</div>
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<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span>{</div>
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<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> <span class="keyword">using </span>RView = <span class="keyword">typename</span> dynamic_xy_step_transposed_type<View>::type;</div>
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<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> <span class="keywordflow">return</span> RView(src.height(),src.width(),<span class="keyword">typename</span> RView::xy_locator(src.xy_at(0,src.height()-1),-1,1,<span class="keyword">true</span>));</div>
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<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span>}</div>
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<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> </div>
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<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> </div>
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<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span><span class="keyword">inline</span> <span class="keyword">auto</span> rotated90ccw_view(View <span class="keyword">const</span>& src)</div>
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<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> -> <span class="keyword">typename</span> dynamic_xy_step_transposed_type<View>::type</div>
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<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span>{</div>
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> <span class="keyword">using </span>RView = <span class="keyword">typename</span> dynamic_xy_step_transposed_type<View>::type;</div>
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<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> <span class="keywordflow">return</span> RView(src.height(),src.width(),<span class="keyword">typename</span> RView::xy_locator(src.xy_at(src.width()-1,0),1,-1,<span class="keyword">true</span>));</div>
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span>}</div>
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> </div>
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<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> </div>
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<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span><span class="keyword">inline</span> <span class="keyword">auto</span> rotated180_view(View <span class="keyword">const</span>& src)</div>
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<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> -> <span class="keyword">typename</span> dynamic_xy_step_type<View>::type</div>
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span>{</div>
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<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <span class="keyword">using </span>RView = <span class="keyword">typename</span> dynamic_xy_step_type<View>::type;</div>
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> <span class="keywordflow">return</span> RView(src.dimensions(),<span class="keyword">typename</span> RView::xy_locator(src.xy_at(src.width()-1,src.height()-1),-1,-1));</div>
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span>}</div>
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<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> </div>
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<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> </div>
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<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span><span class="keyword">inline</span> View subimage_view(</div>
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> View <span class="keyword">const</span>& src,</div>
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> <span class="keyword">typename</span> View::point_t <span class="keyword">const</span>& topleft,</div>
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<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> <span class="keyword">typename</span> View::point_t <span class="keyword">const</span>& dimensions)</div>
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<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span>{</div>
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<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> <span class="keywordflow">return</span> View(dimensions, src.xy_at(topleft));</div>
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<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span>}</div>
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<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> </div>
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<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span><span class="keyword">inline</span> View subimage_view(View <span class="keyword">const</span>& src,</div>
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<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> <span class="keyword">typename</span> View::coord_t x_min,</div>
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<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> <span class="keyword">typename</span> View::coord_t y_min,</div>
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<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> <span class="keyword">typename</span> View::coord_t width,</div>
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<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> <span class="keyword">typename</span> View::coord_t height)</div>
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<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span>{</div>
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<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> <span class="keywordflow">return</span> View(width, height, src.xy_at(x_min, y_min));</div>
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<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span>}</div>
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<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> </div>
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<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> </div>
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<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span><span class="keyword">inline</span></div>
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<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span><span class="keyword">auto</span> subsampled_view(View <span class="keyword">const</span>& src, <span class="keyword">typename</span> View::coord_t x_step, <span class="keyword">typename</span> View::coord_t y_step)</div>
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<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> -> <span class="keyword">typename</span> dynamic_xy_step_type<View>::type</div>
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<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span>{</div>
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<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span> BOOST_ASSERT(x_step > 0 && y_step > 0);</div>
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<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> <span class="keyword">using </span>view_t =<span class="keyword">typename</span> dynamic_xy_step_type<View>::type;</div>
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<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> <span class="keywordflow">return</span> view_t(</div>
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<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> (src.width() + (x_step - 1)) / x_step,</div>
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<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> (src.height() + (y_step - 1)) / y_step,</div>
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<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> <span class="keyword">typename</span> view_t::xy_locator(src.xy_at(0,0), x_step, y_step));</div>
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<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span>}</div>
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<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> </div>
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<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span><span class="keyword">inline</span> <span class="keyword">auto</span> subsampled_view(View <span class="keyword">const</span>& src, <span class="keyword">typename</span> View::point_t <span class="keyword">const</span>& step)</div>
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<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> -> <span class="keyword">typename</span> dynamic_xy_step_type<View>::type</div>
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<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span>{</div>
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<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> <span class="keywordflow">return</span> subsampled_view(src, step.x, step.y);</div>
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<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span>}</div>
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<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> </div>
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<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span> </div>
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<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span><span class="keyword">namespace </span>detail {</div>
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<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View, <span class="keywordtype">bool</span> AreChannelsTogether> <span class="keyword">struct </span>__nth_channel_view_basic;</div>
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<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> </div>
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<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> <span class="comment">// nth_channel_view when the channels are not adjacent in memory. This can happen for multi-channel interleaved images</span></div>
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<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> <span class="comment">// or images with a step</span></div>
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<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> <span class="keyword">struct </span>__nth_channel_view_basic<View,false> {</div>
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<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> view_type<typename channel_type<View>::type, gray_layout_t, <span class="keyword">false</span>, <span class="keyword">true</span>, view_is_mutable<View>::value>::type;</div>
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<div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span> </div>
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<div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src, <span class="keywordtype">int</span> n) {</div>
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<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span> <span class="keyword">using </span>locator_t = <span class="keyword">typename</span> type::xy_locator;</div>
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<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span> <span class="keyword">using </span>x_iterator_t = <span class="keyword">typename</span> type::x_iterator;</div>
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<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> <span class="keyword">using </span>x_iterator_base_t = <span class="keyword">typename</span> iterator_adaptor_get_base<x_iterator_t>::type;</div>
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<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> x_iterator_t sit(x_iterator_base_t(&(src(0,0)[n])),src.pixels().pixel_size());</div>
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<div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> <span class="keywordflow">return</span> type(src.dimensions(),locator_t(sit, src.pixels().row_size()));</div>
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<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span> }</div>
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<div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> };</div>
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<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span> </div>
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<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span> <span class="comment">// nth_channel_view when the channels are together in memory (true for simple grayscale or planar images)</span></div>
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<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> <span class="keyword">struct </span>__nth_channel_view_basic<View,true> {</div>
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<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> view_type<typename channel_type<View>::type, gray_layout_t, <span class="keyword">false</span>, <span class="keyword">false</span>, view_is_mutable<View>::value>::type;</div>
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<div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src, <span class="keywordtype">int</span> n) {</div>
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<div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> <span class="keyword">using </span>x_iterator_t = <span class="keyword">typename</span> type::x_iterator;</div>
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<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span> <span class="keywordflow">return</span> <a class="code hl_function" href="group___image_view_constructors.html#ga1e3e7badf5c1a0cf3ed1e4028525fba5">interleaved_view</a>(src.width(),src.height(),(x_iterator_t)&(src(0,0)[n]), src.pixels().row_size());</div>
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<div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> }</div>
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<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"> 358</span> };</div>
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<div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span> </div>
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<div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View, <span class="keywordtype">bool</span> IsBasic> <span class="keyword">struct </span>__nth_channel_view;</div>
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<div class="line"><a id="l00361" name="l00361"></a><span class="lineno"> 361</span> </div>
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<div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> <span class="comment">// For basic (memory-based) views dispatch to __nth_channel_view_basic</span></div>
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<div class="line"><a id="l00363" name="l00363"></a><span class="lineno"> 363</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span> <span class="keyword">struct </span>__nth_channel_view<View,true></div>
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<div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> {</div>
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<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> <span class="keyword">using </span>src_x_iterator = <span class="keyword">typename</span> View::x_iterator;</div>
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<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> </div>
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<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> <span class="comment">// Determines whether the channels of a given pixel iterator are adjacent in memory.</span></div>
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<div class="line"><a id="l00370" name="l00370"></a><span class="lineno"> 370</span> <span class="comment">// Planar and grayscale iterators have channels adjacent in memory, whereas multi-channel interleaved and iterators with non-fundamental step do not.</span></div>
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<div class="line"><a id="l00371" name="l00371"></a><span class="lineno"> 371</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> adjacent =</div>
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<div class="line"><a id="l00372" name="l00372"></a><span class="lineno"> 372</span> !iterator_is_step<src_x_iterator>::value &&</div>
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<div class="line"><a id="l00373" name="l00373"></a><span class="lineno"> 373</span> (is_planar<src_x_iterator>::value || num_channels<View>::value == 1);</div>
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<div class="line"><a id="l00374" name="l00374"></a><span class="lineno"> 374</span> </div>
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<div class="line"><a id="l00375" name="l00375"></a><span class="lineno"> 375</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00376" name="l00376"></a><span class="lineno"> 376</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> __nth_channel_view_basic<View,adjacent>::type;</div>
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<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"> 377</span> </div>
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<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src, <span class="keywordtype">int</span> n) {</div>
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<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> <span class="keywordflow">return</span> __nth_channel_view_basic<View,adjacent>::make(src,n);</div>
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<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> }</div>
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<div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span> };</div>
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<div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span> </div>
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<div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> <span class="keyword">template</span> <<span class="keyword">typename</span> SrcP> <span class="comment">// SrcP is a reference to PixelConcept (could be pixel value or const/non-const reference)</span></div>
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<div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> <span class="comment">// Examples: pixel<T,L>, pixel<T,L>&, const pixel<T,L>&, planar_pixel_reference<T&,L>, planar_pixel_reference<const T&,L></span></div>
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<div class="foldopen" id="foldopen00389" data-start="{" data-end="};">
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<div class="line"><a id="l00389" name="l00389"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html"> 389</a></span> <span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html">nth_channel_deref_fn</a></div>
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<div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> {</div>
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<div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_mutable =</div>
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<div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span> <a class="code hl_struct" href="structboost_1_1gil_1_1pixel__is__reference.html">pixel_is_reference<SrcP>::value</a> && <a class="code hl_struct" href="structboost_1_1gil_1_1pixel__reference__is__mutable.html">pixel_reference_is_mutable<SrcP>::value</a>;</div>
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<div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00394" name="l00394"></a><span class="lineno"> 394</span> <span class="keyword">using </span>src_pixel_t = <span class="keyword">typename</span> std::remove_reference<SrcP>::type;</div>
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<div class="line"><a id="l00395" name="l00395"></a><span class="lineno"> 395</span> <span class="keyword">using </span>channel_t = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1channel__type.html">channel_type<src_pixel_t>::type</a>;</div>
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<div class="line"><a id="l00396" name="l00396"></a><span class="lineno"> 396</span> <span class="keyword">using </span>const_ref_t = <span class="keyword">typename</span> src_pixel_t::const_reference;</div>
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<div class="line"><a id="l00397" name="l00397"></a><span class="lineno"> 397</span> <span class="keyword">using </span>ref_t = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1pixel__reference__type.html">pixel_reference_type<channel_t,gray_layout_t,false,is_mutable>::type</a>;</div>
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<div class="line"><a id="l00398" name="l00398"></a><span class="lineno"> 398</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00399" name="l00399"></a><span class="lineno"> 399</span> <span class="keyword">using </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html">const_t</a> = <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html">nth_channel_deref_fn<const_ref_t></a>;</div>
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<div class="line"><a id="l00400" name="l00400"></a><span class="lineno"> 400</span> <span class="keyword">using </span>value_type = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1pixel.html">pixel_value_type<channel_t,gray_layout_t>::type</a>;</div>
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<div class="line"><a id="l00401" name="l00401"></a><span class="lineno"> 401</span> <span class="keyword">using </span>const_reference = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1pixel__reference__type.html">pixel_reference_type<channel_t,gray_layout_t,false,false>::type</a>;</div>
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<div class="line"><a id="l00402" name="l00402"></a><span class="lineno"> 402</span> <span class="keyword">using </span>argument_type = SrcP;</div>
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<div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span> <span class="keyword">using </span>reference = mp11::mp_if_c<is_mutable, ref_t, value_type>;</div>
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<div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span> <span class="keyword">using </span>result_type = reference;</div>
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<div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span> </div>
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<div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span> <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html">nth_channel_deref_fn</a>(<span class="keywordtype">int</span> n=0) : _n(n) {}</div>
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<div class="line"><a id="l00407" name="l00407"></a><span class="lineno"> 407</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P></div>
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<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span> <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html">nth_channel_deref_fn</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html">nth_channel_deref_fn<P></a>& d) : _n(d._n) {}</div>
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<div class="line"><a id="l00409" name="l00409"></a><span class="lineno"> 409</span> </div>
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<div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> <span class="keywordtype">int</span> _n; <span class="comment">// the channel to use</span></div>
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<div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> </div>
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<div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> <span class="keyword">auto</span> operator()(argument_type srcP) <span class="keyword">const</span> -> result_type</div>
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<div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span> {</div>
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<div class="line"><a id="l00414" name="l00414"></a><span class="lineno"> 414</span> <span class="keywordflow">return</span> result_type(srcP[_n]);</div>
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<div class="line"><a id="l00415" name="l00415"></a><span class="lineno"> 415</span> }</div>
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<div class="line"><a id="l00416" name="l00416"></a><span class="lineno"> 416</span> };</div>
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</div>
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<div class="line"><a id="l00417" name="l00417"></a><span class="lineno"> 417</span> </div>
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<div class="line"><a id="l00418" name="l00418"></a><span class="lineno"> 418</span> <span class="keyword">template</span> <<span class="keyword">typename</span> View> <span class="keyword">struct </span>__nth_channel_view<View,false> {</div>
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<div class="line"><a id="l00419" name="l00419"></a><span class="lineno"> 419</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00420" name="l00420"></a><span class="lineno"> 420</span> <span class="keyword">using </span>deref_t = <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html">nth_channel_deref_fn<typename View::reference></a>;</div>
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<div class="line"><a id="l00421" name="l00421"></a><span class="lineno"> 421</span> <span class="keyword">using </span>AD = <span class="keyword">typename</span> View::template add_deref<deref_t>;</div>
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<div class="line"><a id="l00422" name="l00422"></a><span class="lineno"> 422</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00423" name="l00423"></a><span class="lineno"> 423</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> AD::type;</div>
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<div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src, <span class="keywordtype">int</span> n) {</div>
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<div class="line"><a id="l00425" name="l00425"></a><span class="lineno"> 425</span> <span class="keywordflow">return</span> AD::make(src, deref_t(n));</div>
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<div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span> }</div>
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<div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span> };</div>
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<div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span>} <span class="comment">// namespace detail</span></div>
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<div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span> </div>
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<div class="line"><a id="l00436" name="l00436"></a><span class="lineno"> 436</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="foldopen" id="foldopen00437" data-start="{" data-end="};">
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<div class="line"><a id="l00437" name="l00437"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1nth__channel__view__type.html"> 437</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1nth__channel__view__type.html">nth_channel_view_type</a> {</div>
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<div class="line"><a id="l00438" name="l00438"></a><span class="lineno"> 438</span><span class="keyword">private</span>:</div>
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<div class="line"><a id="l00439" name="l00439"></a><span class="lineno"> 439</span> BOOST_GIL_CLASS_REQUIRE(View, boost::gil, <a class="code hl_struct" href="structboost_1_1gil_1_1_image_view_concept.html">ImageViewConcept</a>)</div>
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<div class="line"><a id="l00440" name="l00440"></a><span class="lineno"> 440</span> <span class="keyword">using </span>VB = detail::__nth_channel_view<View,view_is_basic<View>::value>;</div>
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<div class="line"><a id="l00441" name="l00441"></a><span class="lineno"> 441</span><span class="keyword">public</span>:</div>
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<div class="line"><a id="l00442" name="l00442"></a><span class="lineno"> 442</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> VB::type;</div>
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<div class="line"><a id="l00443" name="l00443"></a><span class="lineno"> 443</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src, <span class="keywordtype">int</span> n) { <span class="keywordflow">return</span> VB::make(src,n); }</div>
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<div class="line"><a id="l00444" name="l00444"></a><span class="lineno"> 444</span>};</div>
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</div>
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<div class="line"><a id="l00445" name="l00445"></a><span class="lineno"> 445</span> </div>
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<div class="line"><a id="l00447" name="l00447"></a><span class="lineno"> 447</span><span class="keyword">template</span> <<span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00448" name="l00448"></a><span class="lineno"> 448</span><span class="keyword">typename</span> nth_channel_view_type<View>::type nth_channel_view(View <span class="keyword">const</span>& src, <span class="keywordtype">int</span> n) {</div>
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<div class="line"><a id="l00449" name="l00449"></a><span class="lineno"> 449</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="structboost_1_1gil_1_1nth__channel__view__type.html">nth_channel_view_type<View>::make</a>(src,n);</div>
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<div class="line"><a id="l00450" name="l00450"></a><span class="lineno"> 450</span>}</div>
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<div class="line"><a id="l00451" name="l00451"></a><span class="lineno"> 451</span> </div>
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<div class="line"><a id="l00455" name="l00455"></a><span class="lineno"> 455</span> </div>
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<div class="line"><a id="l00456" name="l00456"></a><span class="lineno"> 456</span><span class="keyword">namespace </span>detail {</div>
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<div class="line"><a id="l00457" name="l00457"></a><span class="lineno"> 457</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> View, <span class="keywordtype">bool</span> AreChannelsTogether> <span class="keyword">struct </span>__kth_channel_view_basic;</div>
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<div class="line"><a id="l00458" name="l00458"></a><span class="lineno"> 458</span> </div>
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<div class="line"><a id="l00459" name="l00459"></a><span class="lineno"> 459</span> <span class="comment">// kth_channel_view when the channels are not adjacent in memory. This can happen for multi-channel interleaved images</span></div>
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<div class="line"><a id="l00460" name="l00460"></a><span class="lineno"> 460</span> <span class="comment">// or images with a step</span></div>
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<div class="line"><a id="l00461" name="l00461"></a><span class="lineno"> 461</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00462" name="l00462"></a><span class="lineno"> 462</span> <span class="keyword">struct </span>__kth_channel_view_basic<K,View,false> {</div>
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<div class="line"><a id="l00463" name="l00463"></a><span class="lineno"> 463</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00464" name="l00464"></a><span class="lineno"> 464</span> <span class="keyword">using </span>channel_t = <span class="keyword">typename</span> kth_element_type<typename View::value_type,K>::type;</div>
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<div class="line"><a id="l00465" name="l00465"></a><span class="lineno"> 465</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00466" name="l00466"></a><span class="lineno"> 466</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> view_type<channel_t, gray_layout_t, false, true, view_is_mutable<View>::value>::type;</div>
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<div class="line"><a id="l00467" name="l00467"></a><span class="lineno"> 467</span> </div>
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<div class="line"><a id="l00468" name="l00468"></a><span class="lineno"> 468</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src) {</div>
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<div class="line"><a id="l00469" name="l00469"></a><span class="lineno"> 469</span> <span class="keyword">using </span>locator_t = <span class="keyword">typename</span> type::xy_locator;</div>
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<div class="line"><a id="l00470" name="l00470"></a><span class="lineno"> 470</span> <span class="keyword">using </span>x_iterator_t = <span class="keyword">typename</span> type::x_iterator;</div>
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<div class="line"><a id="l00471" name="l00471"></a><span class="lineno"> 471</span> <span class="keyword">using </span>x_iterator_base_t = <span class="keyword">typename</span> iterator_adaptor_get_base<x_iterator_t>::type;</div>
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<div class="line"><a id="l00472" name="l00472"></a><span class="lineno"> 472</span> x_iterator_t sit(x_iterator_base_t(&gil::at_c<K>(src(0,0))),src.pixels().pixel_size());</div>
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<div class="line"><a id="l00473" name="l00473"></a><span class="lineno"> 473</span> <span class="keywordflow">return</span> type(src.dimensions(),locator_t(sit, src.pixels().row_size()));</div>
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<div class="line"><a id="l00474" name="l00474"></a><span class="lineno"> 474</span> }</div>
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<div class="line"><a id="l00475" name="l00475"></a><span class="lineno"> 475</span> };</div>
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<div class="line"><a id="l00476" name="l00476"></a><span class="lineno"> 476</span> </div>
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<div class="line"><a id="l00477" name="l00477"></a><span class="lineno"> 477</span> <span class="comment">// kth_channel_view when the channels are together in memory (true for simple grayscale or planar images)</span></div>
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<div class="line"><a id="l00478" name="l00478"></a><span class="lineno"> 478</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00479" name="l00479"></a><span class="lineno"> 479</span> <span class="keyword">struct </span>__kth_channel_view_basic<K,View,true> {</div>
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<div class="line"><a id="l00480" name="l00480"></a><span class="lineno"> 480</span> <span class="keyword">private</span>:</div>
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|
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno"> 481</span> <span class="keyword">using </span>channel_t = <span class="keyword">typename</span> kth_element_type<typename View::value_type, K>::type;</div>
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<div class="line"><a id="l00482" name="l00482"></a><span class="lineno"> 482</span> <span class="keyword">public</span>:</div>
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|
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno"> 483</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> view_type<channel_t, gray_layout_t, false, false, view_is_mutable<View>::value>::type;</div>
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<div class="line"><a id="l00484" name="l00484"></a><span class="lineno"> 484</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src) {</div>
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|
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno"> 485</span> <span class="keyword">using </span>x_iterator_t = <span class="keyword">typename</span> type::x_iterator;</div>
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<div class="line"><a id="l00486" name="l00486"></a><span class="lineno"> 486</span> <span class="keywordflow">return</span> <a class="code hl_function" href="group___image_view_constructors.html#ga1e3e7badf5c1a0cf3ed1e4028525fba5">interleaved_view</a>(src.width(),src.height(),(x_iterator_t)&gil::at_c<K>(src(0,0)), src.pixels().row_size());</div>
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<div class="line"><a id="l00487" name="l00487"></a><span class="lineno"> 487</span> }</div>
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<div class="line"><a id="l00488" name="l00488"></a><span class="lineno"> 488</span> };</div>
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<div class="line"><a id="l00489" name="l00489"></a><span class="lineno"> 489</span> </div>
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<div class="line"><a id="l00490" name="l00490"></a><span class="lineno"> 490</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> View, <span class="keywordtype">bool</span> IsBasic> <span class="keyword">struct </span>__kth_channel_view;</div>
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<div class="line"><a id="l00491" name="l00491"></a><span class="lineno"> 491</span> </div>
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<div class="line"><a id="l00492" name="l00492"></a><span class="lineno"> 492</span> <span class="comment">// For basic (memory-based) views dispatch to __kth_channel_view_basic</span></div>
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<div class="line"><a id="l00493" name="l00493"></a><span class="lineno"> 493</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> View> <span class="keyword">struct </span>__kth_channel_view<K,View,true></div>
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<div class="line"><a id="l00494" name="l00494"></a><span class="lineno"> 494</span> {</div>
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<div class="line"><a id="l00495" name="l00495"></a><span class="lineno"> 495</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00496" name="l00496"></a><span class="lineno"> 496</span> <span class="keyword">using </span>src_x_iterator = <span class="keyword">typename</span> View::x_iterator;</div>
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<div class="line"><a id="l00497" name="l00497"></a><span class="lineno"> 497</span> </div>
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<div class="line"><a id="l00498" name="l00498"></a><span class="lineno"> 498</span> <span class="comment">// Determines whether the channels of a given pixel iterator are adjacent in memory.</span></div>
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<div class="line"><a id="l00499" name="l00499"></a><span class="lineno"> 499</span> <span class="comment">// Planar and grayscale iterators have channels adjacent in memory, whereas multi-channel interleaved and iterators with non-fundamental step do not.</span></div>
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<div class="line"><a id="l00500" name="l00500"></a><span class="lineno"> 500</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> adjacent =</div>
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<div class="line"><a id="l00501" name="l00501"></a><span class="lineno"> 501</span> !iterator_is_step<src_x_iterator>::value &&</div>
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<div class="line"><a id="l00502" name="l00502"></a><span class="lineno"> 502</span> (is_planar<src_x_iterator>::value || num_channels<View>::value == 1);</div>
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<div class="line"><a id="l00503" name="l00503"></a><span class="lineno"> 503</span> </div>
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<div class="line"><a id="l00504" name="l00504"></a><span class="lineno"> 504</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00505" name="l00505"></a><span class="lineno"> 505</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> __kth_channel_view_basic<K,View,adjacent>::type;</div>
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<div class="line"><a id="l00506" name="l00506"></a><span class="lineno"> 506</span> </div>
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<div class="line"><a id="l00507" name="l00507"></a><span class="lineno"> 507</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src) {</div>
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<div class="line"><a id="l00508" name="l00508"></a><span class="lineno"> 508</span> <span class="keywordflow">return</span> __kth_channel_view_basic<K,View,adjacent>::make(src);</div>
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<div class="line"><a id="l00509" name="l00509"></a><span class="lineno"> 509</span> }</div>
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<div class="line"><a id="l00510" name="l00510"></a><span class="lineno"> 510</span> };</div>
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<div class="line"><a id="l00511" name="l00511"></a><span class="lineno"> 511</span> </div>
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<div class="line"><a id="l00518" name="l00518"></a><span class="lineno"> 518</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> SrcP></div>
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<div class="foldopen" id="foldopen00519" data-start="{" data-end="};">
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<div class="line"><a id="l00519" name="l00519"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html"> 519</a></span> <span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html">kth_channel_deref_fn</a></div>
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<div class="line"><a id="l00520" name="l00520"></a><span class="lineno"> 520</span> {</div>
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<div class="line"><a id="l00521" name="l00521"></a><span class="lineno"> 521</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_mutable =</div>
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<div class="line"><a id="l00522" name="l00522"></a><span class="lineno"> 522</span> <a class="code hl_struct" href="structboost_1_1gil_1_1pixel__is__reference.html">pixel_is_reference<SrcP>::value</a> && <a class="code hl_struct" href="structboost_1_1gil_1_1pixel__reference__is__mutable.html">pixel_reference_is_mutable<SrcP>::value</a>;</div>
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<div class="line"><a id="l00523" name="l00523"></a><span class="lineno"> 523</span> </div>
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<div class="line"><a id="l00524" name="l00524"></a><span class="lineno"> 524</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00525" name="l00525"></a><span class="lineno"> 525</span> <span class="keyword">using </span>src_pixel_t = <span class="keyword">typename</span> std::remove_reference<SrcP>::type;</div>
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<div class="line"><a id="l00526" name="l00526"></a><span class="lineno"> 526</span> <span class="keyword">using </span>channel_t = <span class="keyword">typename</span> kth_element_type<src_pixel_t, K>::type;</div>
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<div class="line"><a id="l00527" name="l00527"></a><span class="lineno"> 527</span> <span class="keyword">using </span>const_ref_t = <span class="keyword">typename</span> src_pixel_t::const_reference;</div>
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<div class="line"><a id="l00528" name="l00528"></a><span class="lineno"> 528</span> <span class="keyword">using </span>ref_t = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1pixel__reference__type.html">pixel_reference_type<channel_t,gray_layout_t,false,is_mutable>::type</a>;</div>
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<div class="line"><a id="l00529" name="l00529"></a><span class="lineno"> 529</span> </div>
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<div class="line"><a id="l00530" name="l00530"></a><span class="lineno"> 530</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00531" name="l00531"></a><span class="lineno"> 531</span> <span class="keyword">using </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html">const_t</a> = <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html">kth_channel_deref_fn<K,const_ref_t></a>;</div>
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<div class="line"><a id="l00532" name="l00532"></a><span class="lineno"> 532</span> <span class="keyword">using </span>value_type = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1pixel.html">pixel_value_type<channel_t,gray_layout_t>::type</a>;</div>
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<div class="line"><a id="l00533" name="l00533"></a><span class="lineno"> 533</span> <span class="keyword">using </span>const_reference = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1pixel__reference__type.html">pixel_reference_type<channel_t,gray_layout_t,false,false>::type</a>;</div>
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<div class="line"><a id="l00534" name="l00534"></a><span class="lineno"> 534</span> <span class="keyword">using </span>argument_type = SrcP;</div>
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<div class="line"><a id="l00535" name="l00535"></a><span class="lineno"> 535</span> <span class="keyword">using </span>reference = mp11::mp_if_c<is_mutable, ref_t, value_type>;</div>
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<div class="line"><a id="l00536" name="l00536"></a><span class="lineno"> 536</span> <span class="keyword">using </span>result_type = reference;</div>
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<div class="line"><a id="l00537" name="l00537"></a><span class="lineno"> 537</span> </div>
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<div class="line"><a id="l00538" name="l00538"></a><span class="lineno"> 538</span> <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html">kth_channel_deref_fn</a>() {}</div>
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<div class="line"><a id="l00539" name="l00539"></a><span class="lineno"> 539</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P></div>
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<div class="line"><a id="l00540" name="l00540"></a><span class="lineno"> 540</span> <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html">kth_channel_deref_fn</a>(<span class="keyword">const</span> <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html">kth_channel_deref_fn<K,P></a>&) {}</div>
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<div class="line"><a id="l00541" name="l00541"></a><span class="lineno"> 541</span> </div>
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<div class="line"><a id="l00542" name="l00542"></a><span class="lineno"> 542</span> result_type operator()(argument_type srcP)<span class="keyword"> const </span>{</div>
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<div class="line"><a id="l00543" name="l00543"></a><span class="lineno"> 543</span> <span class="keywordflow">return</span> result_type(gil::at_c<K>(srcP));</div>
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<div class="line"><a id="l00544" name="l00544"></a><span class="lineno"> 544</span> }</div>
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<div class="line"><a id="l00545" name="l00545"></a><span class="lineno"> 545</span> };</div>
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</div>
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<div class="line"><a id="l00546" name="l00546"></a><span class="lineno"> 546</span> </div>
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<div class="line"><a id="l00547" name="l00547"></a><span class="lineno"> 547</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> View> <span class="keyword">struct </span>__kth_channel_view<K,View,false> {</div>
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<div class="line"><a id="l00548" name="l00548"></a><span class="lineno"> 548</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00549" name="l00549"></a><span class="lineno"> 549</span> <span class="keyword">using </span>deref_t = <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html">kth_channel_deref_fn<K,typename View::reference></a>;</div>
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<div class="line"><a id="l00550" name="l00550"></a><span class="lineno"> 550</span> <span class="keyword">using </span>AD = <span class="keyword">typename</span> View::template add_deref<deref_t>;</div>
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<div class="line"><a id="l00551" name="l00551"></a><span class="lineno"> 551</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00552" name="l00552"></a><span class="lineno"> 552</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> AD::type;</div>
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<div class="line"><a id="l00553" name="l00553"></a><span class="lineno"> 553</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src) {</div>
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<div class="line"><a id="l00554" name="l00554"></a><span class="lineno"> 554</span> <span class="keywordflow">return</span> AD::make(src, deref_t());</div>
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<div class="line"><a id="l00555" name="l00555"></a><span class="lineno"> 555</span> }</div>
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<div class="line"><a id="l00556" name="l00556"></a><span class="lineno"> 556</span> };</div>
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<div class="line"><a id="l00557" name="l00557"></a><span class="lineno"> 557</span>} <span class="comment">// namespace detail</span></div>
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<div class="line"><a id="l00558" name="l00558"></a><span class="lineno"> 558</span> </div>
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<div class="line"><a id="l00565" name="l00565"></a><span class="lineno"> 565</span><span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> View></div>
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<div class="foldopen" id="foldopen00566" data-start="{" data-end="};">
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<div class="line"><a id="l00566" name="l00566"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1kth__channel__view__type.html"> 566</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1kth__channel__view__type.html">kth_channel_view_type</a> {</div>
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<div class="line"><a id="l00567" name="l00567"></a><span class="lineno"> 567</span><span class="keyword">private</span>:</div>
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<div class="line"><a id="l00568" name="l00568"></a><span class="lineno"> 568</span> BOOST_GIL_CLASS_REQUIRE(View, boost::gil, <a class="code hl_struct" href="structboost_1_1gil_1_1_image_view_concept.html">ImageViewConcept</a>)</div>
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<div class="line"><a id="l00569" name="l00569"></a><span class="lineno"> 569</span> <span class="keyword">using </span>VB = detail::__kth_channel_view<K,View,view_is_basic<View>::value>;</div>
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<div class="line"><a id="l00570" name="l00570"></a><span class="lineno"> 570</span><span class="keyword">public</span>:</div>
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<div class="line"><a id="l00571" name="l00571"></a><span class="lineno"> 571</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> VB::type;</div>
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<div class="line"><a id="l00572" name="l00572"></a><span class="lineno"> 572</span> <span class="keyword">static</span> type make(View <span class="keyword">const</span>& src) { <span class="keywordflow">return</span> VB::make(src); }</div>
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<div class="line"><a id="l00573" name="l00573"></a><span class="lineno"> 573</span>};</div>
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</div>
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<div class="line"><a id="l00574" name="l00574"></a><span class="lineno"> 574</span> </div>
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<div class="line"><a id="l00576" name="l00576"></a><span class="lineno"> 576</span><span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> View></div>
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<div class="line"><a id="l00577" name="l00577"></a><span class="lineno"> 577</span><span class="keyword">auto</span> kth_channel_view(View <span class="keyword">const</span>& src)</div>
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<div class="line"><a id="l00578" name="l00578"></a><span class="lineno"> 578</span> -> <span class="keyword">typename</span> kth_channel_view_type<K,View>::type</div>
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<div class="line"><a id="l00579" name="l00579"></a><span class="lineno"> 579</span>{</div>
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<div class="line"><a id="l00580" name="l00580"></a><span class="lineno"> 580</span> <span class="keywordflow">return</span> <a class="code hl_struct" href="structboost_1_1gil_1_1kth__channel__view__type.html">kth_channel_view_type<K,View>::make</a>(src);</div>
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<div class="line"><a id="l00581" name="l00581"></a><span class="lineno"> 581</span>}</div>
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<div class="line"><a id="l00582" name="l00582"></a><span class="lineno"> 582</span> </div>
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<div class="line"><a id="l00583" name="l00583"></a><span class="lineno"> 583</span>} } <span class="comment">// namespace boost::gil</span></div>
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<div class="line"><a id="l00584" name="l00584"></a><span class="lineno"> 584</span> </div>
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<div class="line"><a id="l00585" name="l00585"></a><span class="lineno"> 585</span><span class="preprocessor">#endif</span></div>
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<div class="ttc" id="aclassboost_1_1gil_1_1color__convert__deref__fn_html"><div class="ttname"><a href="classboost_1_1gil_1_1color__convert__deref__fn.html">boost::gil::color_convert_deref_fn</a></div><div class="ttdoc">Function object that given a source pixel, returns it converted to a given color space and channel de...</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:135</div></div>
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<div class="ttc" id="aclassboost_1_1gil_1_1image__view_html"><div class="ttname"><a href="classboost_1_1gil_1_1image__view.html">boost::gil::image_view</a></div><div class="ttdoc">A lightweight object that interprets memory as a 2D array of pixels. Models ImageViewConcept,...</div><div class="ttdef"><b>Definition</b> image_view.hpp:54</div></div>
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<div class="ttc" id="aclassboost_1_1gil_1_1point_html"><div class="ttname"><a href="classboost_1_1gil_1_1point.html">boost::gil::point</a></div><div class="ttdoc">2D point both axes of which have the same dimension typeModels: Point2DConcept</div><div class="ttdef"><b>Definition</b> point.hpp:36</div></div>
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<div class="ttc" id="agroup___image_model_html_ga11e52868409ba2d52a93213ee39f4fde"><div class="ttname"><a href="group___image_model.html#ga11e52868409ba2d52a93213ee39f4fde">boost::gil::view</a></div><div class="ttdeci">auto view(image< Pixel, IsPlanar, Alloc > &img) -> typename image< Pixel, IsPlanar, Alloc >::view_t const &</div><div class="ttdoc">Returns the non-constant-pixel view of an image.</div><div class="ttdef"><b>Definition</b> image.hpp:565</div></div>
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<div class="ttc" id="agroup___image_view_constructors_html_ga1e3e7badf5c1a0cf3ed1e4028525fba5"><div class="ttname"><a href="group___image_view_constructors.html#ga1e3e7badf5c1a0cf3ed1e4028525fba5">boost::gil::interleaved_view</a></div><div class="ttdeci">auto interleaved_view(std::size_t width, std::size_t height, Iterator pixels, std::ptrdiff_t rowsize_in_bytes) -> typename type_from_x_iterator< Iterator >::view_t</div><div class="ttdoc">Constructing image views from raw interleaved pixel data.</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:57</div></div>
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<div class="ttc" id="agroup___image_view_constructors_html_ga52bceca4653b4605252a0829616a22fa"><div class="ttname"><a href="group___image_view_constructors.html#ga52bceca4653b4605252a0829616a22fa">boost::gil::planar_view_get_raw_data</a></div><div class="ttdeci">auto planar_view_get_raw_data(HomogeneousView const &view, int plane_index) -> typename detail::channel_pointer_type< HomogeneousView >::type</div><div class="ttdoc">Returns C pointer to the the channels of a given color plane of a planar homogeneous view.</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:118</div></div>
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<div class="ttc" id="agroup___image_view_constructors_html_gab692eeedd8c309b09b47590e593cce36"><div class="ttname"><a href="group___image_view_constructors.html#gab692eeedd8c309b09b47590e593cce36">boost::gil::interleaved_view_get_raw_data</a></div><div class="ttdeci">auto interleaved_view_get_raw_data(HomogeneousView const &view) -> typename detail::channel_pointer_type< HomogeneousView >::type</div><div class="ttdoc">Returns C pointer to the the channels of an interleaved homogeneous view.</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:106</div></div>
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<div class="ttc" id="agroup___image_view_transformations_color_convert_html_gaa8b346919e5d977788715b06b2e687d5"><div class="ttname"><a href="group___image_view_transformations_color_convert.html#gaa8b346919e5d977788715b06b2e687d5">boost::gil::color_converted_view</a></div><div class="ttdeci">auto color_converted_view(View const &src, CC cc) -> typename color_converted_view_type< View, DstP, CC >::type</div><div class="ttdoc">view of a different color space with a user defined color-converter</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:184</div></div>
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<div class="ttc" id="anamespaceboost_html"><div class="ttname"><a href="namespaceboost.html">boost</a></div><div class="ttdoc">defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)</div><div class="ttdef"><b>Definition</b> algorithm.hpp:36</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1_image_view_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_image_view_concept.html">boost::gil::ImageViewConcept</a></div><div class="ttdoc">GIL's 2-dimensional view over immutable GIL pixels.</div><div class="ttdef"><b>Definition</b> concepts/image_view.hpp:376</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1_mutable_pixel_concept_html"><div class="ttname"><a href="structboost_1_1gil_1_1_mutable_pixel_concept.html">boost::gil::MutablePixelConcept</a></div><div class="ttdoc">Pixel concept that allows for changing its channels.</div><div class="ttdef"><b>Definition</b> concepts/pixel.hpp:102</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1channel__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1channel__type.html">boost::gil::channel_type</a></div><div class="ttdef"><b>Definition</b> color_convert.hpp:31</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1color__converted__view__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1color__converted__view__type.html">boost::gil::color_converted_view_type</a></div><div class="ttdoc">Returns the type of a view that does color conversion upon dereferencing its pixels.</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:176</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1default__color__converter_html"><div class="ttname"><a href="structboost_1_1gil_1_1default__color__converter.html">boost::gil::default_color_converter</a></div><div class="ttdoc">class for color-converting one pixel to another</div><div class="ttdef"><b>Definition</b> color_convert.hpp:328</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1deref__base_html"><div class="ttname"><a href="structboost_1_1gil_1_1deref__base.html">boost::gil::deref_base</a></div><div class="ttdoc">Helper base class for pixel dereference adaptors.</div><div class="ttdef"><b>Definition</b> utilities.hpp:107</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1kth__channel__deref__fn_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1kth__channel__deref__fn.html">boost::gil::detail::kth_channel_deref_fn</a></div><div class="ttdoc">Function object that returns a grayscale reference of the K-th channel (specified as a template param...</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:520</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1nth__channel__deref__fn_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1nth__channel__deref__fn.html">boost::gil::detail::nth_channel_deref_fn</a></div><div class="ttdoc">Function object that returns a grayscale reference of the N-th channel of a given reference....</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:390</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1dynamic__xy__step__transposed__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1dynamic__xy__step__transposed__type.html">boost::gil::dynamic_xy_step_transposed_type</a></div><div class="ttdoc">Returns the type of a transposed view that has a dynamic step along both X and Y.</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:52</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1dynamic__xy__step__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1dynamic__xy__step__type.html">boost::gil::dynamic_xy_step_type</a></div><div class="ttdoc">Returns the type of a view that has a dynamic step along both X and Y.</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:46</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1dynamic__y__step__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1dynamic__y__step__type.html">boost::gil::dynamic_y_step_type</a></div><div class="ttdoc">Base template for types that model HasDynamicYStepTypeConcept.</div><div class="ttdef"><b>Definition</b> dynamic_step.hpp:21</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1kth__channel__view__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1kth__channel__view__type.html">boost::gil::kth_channel_view_type</a></div><div class="ttdoc">Given a source image view type View, returns the type of an image view over a given channel of View.</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:566</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1nth__channel__view__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1nth__channel__view__type.html">boost::gil::nth_channel_view_type</a></div><div class="ttdoc">Given a source image view type View, returns the type of an image view over a single channel of View.</div><div class="ttdef"><b>Definition</b> image_view_factory.hpp:437</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1pixel__is__reference_html"><div class="ttname"><a href="structboost_1_1gil_1_1pixel__is__reference.html">boost::gil::pixel_is_reference</a></div><div class="ttdoc">Given a model of a pixel, determines whether the model represents a pixel reference (as opposed to pi...</div><div class="ttdef"><b>Definition</b> metafunctions.hpp:218</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1pixel__reference__is__mutable_html"><div class="ttname"><a href="structboost_1_1gil_1_1pixel__reference__is__mutable.html">boost::gil::pixel_reference_is_mutable</a></div><div class="ttdoc">Determines if the given pixel reference is mutable (i.e. its channels can be changed)</div><div class="ttdef"><b>Definition</b> metafunctions.hpp:231</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1pixel__reference__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1pixel__reference__type.html">boost::gil::pixel_reference_type</a></div><div class="ttdoc">Returns the type of a homogeneous pixel reference given the channel type, layout, whether it operates...</div><div class="ttdef"><b>Definition</b> metafunctions.hpp:267</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1pixel_html"><div class="ttname"><a href="structboost_1_1gil_1_1pixel.html">boost::gil::pixel</a></div><div class="ttdoc">Represents a pixel value (a container of channels). Models: HomogeneousColorBaseValueConcept,...</div><div class="ttdef"><b>Definition</b> pixel.hpp:106</div></div>
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<div class="ttc" id="astructboost_1_1gil_1_1view__is__basic_html"><div class="ttname"><a href="structboost_1_1gil_1_1view__is__basic.html">boost::gil::view_is_basic</a></div><div class="ttdoc">Basic views must be over basic locators.</div><div class="ttdef"><b>Definition</b> metafunctions.hpp:130</div></div>
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