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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>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Copyright 2007-2008 Christian Henning, Andreas Pokorny</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
<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>
<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>
<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>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#ifndef BOOST_GIL_IO_CONVERSION_POLICIES_HPP</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_IO_CONVERSION_POLICIES_HPP</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include &lt;boost/gil/image_view_factory.hpp&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &lt;boost/gil/detail/mp11.hpp&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &lt;boost/gil/io/error.hpp&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include &lt;algorithm&gt;</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include &lt;iterator&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> </div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a>{ <span class="keyword">namespace </span>gil { <span class="keyword">namespace </span>detail {</div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="keyword">struct </span>read_and_no_convert</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span>{</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using </span>color_converter_type = <span class="keywordtype">void</span> *;</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> InIterator, <span class="keyword">typename</span> OutIterator&gt;</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <span class="keywordtype">void</span> read(</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> InIterator <span class="keyword">const</span>&amp; <span class="comment">/*begin*/</span>, InIterator <span class="keyword">const</span>&amp; <span class="comment">/*end*/</span> , OutIterator <span class="comment">/*out*/</span>,</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">typename</span> std::enable_if</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> &lt;</div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> mp11::mp_not</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> &lt;</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> pixels_are_compatible</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> &lt;</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">typename</span> std::iterator_traits&lt;InIterator&gt;::value_type,</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">typename</span> std::iterator_traits&lt;OutIterator&gt;::value_type</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> &gt;</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> &gt;::value</div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> &gt;::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> {</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> io_error(<span class="stringliteral">&quot;Data cannot be copied because the pixels are incompatible.&quot;</span>);</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> }</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> InIterator, <span class="keyword">typename</span> OutIterator&gt;</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordtype">void</span> read(InIterator <span class="keyword">const</span>&amp; begin, InIterator <span class="keyword">const</span>&amp; end, OutIterator out,</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">typename</span> std::enable_if</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> &lt;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> pixels_are_compatible</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> &lt;</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">typename</span> std::iterator_traits&lt;InIterator&gt;::value_type,</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">typename</span> std::iterator_traits&lt;OutIterator&gt;::value_type</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> &gt;::value</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> &gt;::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> {</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> std::copy(begin, end, out);</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> }</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span>};</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span><span class="keyword">template</span>&lt;<span class="keyword">typename</span> CC&gt;</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="keyword">struct </span>read_and_convert</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span>{</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="keyword">using </span>color_converter_type = default_color_converter;</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> CC _cc;</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> read_and_convert()</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> {}</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> read_and_convert( <span class="keyword">const</span> color_converter_type&amp; cc )</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> : _cc( cc )</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> {}</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keyword">template</span>&lt; <span class="keyword">typename</span> InIterator</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> , <span class="keyword">typename</span> OutIterator</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> &gt;</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keywordtype">void</span> read( <span class="keyword">const</span> InIterator&amp; begin</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> , <span class="keyword">const</span> InIterator&amp; end</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> , OutIterator out</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> )</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> {</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">using </span>deref_t = color_convert_deref_fn&lt;typename std::iterator_traits&lt;InIterator&gt;::reference</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> , <span class="keyword">typename</span> std::iterator_traits&lt;OutIterator&gt;::value_type <span class="comment">//reference?</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> , CC</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> &gt;;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> std::transform( begin</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> , end</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> , out</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> , deref_t( _cc )</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> );</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> }</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span>};</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span><span class="keyword">template</span>&lt; <span class="keyword">typename</span> Conversion_Policy &gt;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1is__read__only.html"> 97</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1is__read__only.html">is_read_only</a> : std::false_type {};</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span><span class="keyword">template</span>&lt;&gt;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1is__read__only.html">is_read_only</a>&lt;detail::read_and_no_convert&gt; : std::true_type {};</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span>} <span class="comment">// namespace detail</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span>} <span class="comment">// namespace gil</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span>} <span class="comment">// namespace boost</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="preprocessor">#endif</span></div>
<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>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1is__read__only_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1is__read__only.html">boost::gil::detail::is_read_only</a></div><div class="ttdoc">Determines if reader type is read only ( no conversion ).</div><div class="ttdef"><b>Definition</b> conversion_policies.hpp:97</div></div>
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