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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 2005-2007 Adobe Systems Incorporated</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_CHANNEL_HPP</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#define BOOST_GIL_CHANNEL_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/utilities.hpp&gt;</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &lt;boost/assert.hpp&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &lt;boost/config.hpp&gt;</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#include &lt;boost/config/pragma_message.hpp&gt;</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include &lt;boost/integer/integer_mask.hpp&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include &lt;cstdint&gt;</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include &lt;limits&gt;</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#ifdef BOOST_GIL_DOXYGEN_ONLY</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#define BOOST_GIL_CONFIG_HAS_UNALIGNED_ACCESS</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#ifdef BOOST_GIL_CONFIG_HAS_UNALIGNED_ACCESS</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#if defined(sun) || defined(__sun) || \ </span><span class="comment">// SunOS</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> defined(__osf__) || defined(__osf) || \ <span class="comment">// Tru64</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> defined(_hpux) || defined(hpux) || \ <span class="comment">// HP-UX</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> defined(__arm__) || defined(__ARM_ARCH) || \ <span class="comment">// ARM</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> defined(_AIX) <span class="comment">// AIX</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="preprocessor">#error Unaligned access strictly disabled for some UNIX platforms or ARM architecture</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="preprocessor">#elif defined(__i386__) || defined(__x86_64__) || defined(__vax__)</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// The check for little-endian architectures that tolerate unaligned memory</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// accesses is just an optimization. Nothing will break if it fails to detect</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// a suitable architecture.</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> <span class="comment">//</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="comment">// Unfortunately, this optimization may be a C/C++ strict aliasing rules violation</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// if accessed data buffer has effective type that cannot be aliased</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="comment">// without leading to undefined behaviour.</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span>BOOST_PRAGMA_MESSAGE(<span class="stringliteral">&quot;CAUTION: Unaligned access tolerated on little-endian may cause undefined behaviour&quot;</span>)</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="preprocessor">#error Unaligned access disabled for unknown platforms and architectures</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span><span class="preprocessor">#endif </span><span class="comment">// defined(BOOST_GIL_CONFIG_HAS_UNALIGNED_ACCESS)</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span><span class="keyword">namespace </span>detail {</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> T, <span class="keywordtype">bool</span> IsClass&gt;</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span><span class="keyword">struct </span>channel_traits_impl;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span><span class="comment">// channel traits for custom class</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span><span class="keyword">struct </span>channel_traits_impl&lt;T, true&gt;</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> <span class="keyword">using </span>value_type = <span class="keyword">typename</span> T::value_type;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">using </span>reference = <span class="keyword">typename</span> T::reference;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="keyword">using </span>pointer = <span class="keyword">typename</span> T::pointer;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">using </span>const_reference = <span class="keyword">typename</span> T::const_reference;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="keyword">using </span>const_pointer = <span class="keyword">typename</span> T::const_pointer;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_mutable = T::is_mutable;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">static</span> value_type min_value() { <span class="keywordflow">return</span> T::min_value(); }</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">static</span> value_type max_value() { <span class="keywordflow">return</span> T::max_value(); }</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span>};</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span><span class="comment">// channel traits implementation for built-in integral or floating point channel type</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span><span class="keyword">struct </span>channel_traits_impl&lt;T, false&gt;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span>{</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">using </span>value_type = T;</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">using </span>reference = T&amp;;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="keyword">using </span>pointer = T*;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">using </span>const_reference = T <span class="keyword">const</span>&amp;;</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">using </span>const_pointer = T <span class="keyword">const</span>*;</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_mutable = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">static</span> value_type min_value() { <span class="keywordflow">return</span> (std::numeric_limits&lt;T&gt;::min)(); }</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keyword">static</span> value_type max_value() { <span class="keywordflow">return</span> (std::numeric_limits&lt;T&gt;::max)(); }</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span>};</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span><span class="comment">// channel traits implementation for constant built-in scalar or floating point type</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="keyword">struct </span>channel_traits_impl&lt;T const, false&gt; : channel_traits_impl&lt;T, false&gt;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span>{</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">using </span>reference = T <span class="keyword">const</span>&amp;;</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">using </span>pointer = T <span class="keyword">const</span>*;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_mutable = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span>};</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> </div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span>} <span class="comment">// namespace detail</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span><span class="keyword">struct </span>channel_traits : detail::channel_traits_impl&lt;T, std::is_class&lt;T&gt;::value&gt; {};</div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span><span class="comment">// Channel traits for C++ reference type - remove the reference</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span><span class="keyword">struct </span>channel_traits&lt;T&amp;&gt; : channel_traits&lt;T&gt; {};</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span><span class="comment">// Channel traits for constant C++ reference type</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span><span class="keyword">struct </span>channel_traits&lt;T const&amp;&gt; : channel_traits&lt;T&gt;</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span>{</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> <span class="keyword">using </span>reference = <span class="keyword">typename</span> channel_traits&lt;T&gt;::const_reference;</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keyword">using </span>pointer = <span class="keyword">typename</span> channel_traits&lt;T&gt;::const_pointer;</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_mutable = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span>};</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BaseChannelValue, <span class="keyword">typename</span> MinVal, <span class="keyword">typename</span> MaxVal&gt;</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span><span class="keyword">struct </span>scoped_channel_value</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span>{</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> <span class="keyword">using </span>value_type = scoped_channel_value&lt;BaseChannelValue, MinVal, MaxVal&gt;;</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> <span class="keyword">using </span>reference = value_type&amp;;</div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> <span class="keyword">using </span>pointer = value_type*;</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keyword">using </span>const_reference = value_type <span class="keyword">const</span>&amp;;</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="keyword">using </span>const_pointer = value_type <span class="keyword">const</span>*;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_mutable = channel_traits&lt;BaseChannelValue&gt;::is_mutable;</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> </div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="keyword">using </span>base_channel_t = BaseChannelValue;</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="keyword">static</span> value_type min_value() { <span class="keywordflow">return</span> MinVal::apply(); }</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="keyword">static</span> value_type max_value() { <span class="keywordflow">return</span> MaxVal::apply(); }</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> </div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> scoped_channel_value() = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> scoped_channel_value(scoped_channel_value <span class="keyword">const</span>&amp; other) : value_(other.value_) {}</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> scoped_channel_value&amp; operator=(scoped_channel_value <span class="keyword">const</span>&amp; other) = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> scoped_channel_value(BaseChannelValue value) : value_(value) {}</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> scoped_channel_value&amp; operator=(BaseChannelValue value)</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> {</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> value_ = value;</div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> }</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> </div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> <span class="keyword">auto</span> operator++() -&gt; scoped_channel_value&amp; { ++value_; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> <span class="keyword">auto</span> operator--() -&gt; scoped_channel_value&amp; { --value_; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> </div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> <span class="keyword">auto</span> operator++(<span class="keywordtype">int</span>) -&gt; scoped_channel_value</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> {</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> scoped_channel_value tmp=*<span class="keyword">this</span>;</div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> this-&gt;operator++(); <span class="keywordflow">return</span> tmp;</div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> }</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> </div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="keyword">auto</span> operator--(<span class="keywordtype">int</span>) -&gt; scoped_channel_value</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> {</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> scoped_channel_value tmp=*<span class="keyword">this</span>;</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> this-&gt;operator--(); <span class="keywordflow">return</span> tmp;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> }</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> </div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Scalar2&gt;</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">auto</span> operator+=(Scalar2 v) -&gt; scoped_channel_value&amp; { value_+=v; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> </div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Scalar2&gt;</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> <span class="keyword">auto</span> operator-=(Scalar2 v) -&gt; scoped_channel_value&amp; { value_-=v; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> </div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Scalar2&gt;</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> <span class="keyword">auto</span> operator*=(Scalar2 v) -&gt; scoped_channel_value&amp; { value_*=v; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> </div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Scalar2&gt;</div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> <span class="keyword">auto</span> operator/=(Scalar2 v) -&gt; scoped_channel_value&amp; { value_/=v; <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> </div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> <span class="keyword">operator</span> BaseChannelValue()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> value_; }</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> BaseChannelValue value_{};</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span>};</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> </div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span><span class="keyword">struct </span>float_point_zero</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span>{</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> T apply() { <span class="keywordflow">return</span> 0.0f; }</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span>};</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> </div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span><span class="keyword">struct </span>float_point_one</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span>{</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> T apply() { <span class="keywordflow">return</span> 1.0f; }</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span>};</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> </div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> </div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span><span class="comment">// It is necessary for packed channels to have their own value type. They cannot simply use an integral large enough to store the data. Here is why:</span></div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span><span class="comment">// - Any operation that requires returning the result by value will otherwise return the built-in integral type, which will have incorrect range</span></div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span><span class="comment">// That means that after getting the value of the channel we cannot properly do channel_convert, channel_invert, etc.</span></div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span><span class="comment">// - Two channels are declared compatible if they have the same value type. That means that a packed channel is incorrectly declared compatible with an integral type</span></div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span><span class="keyword">namespace </span>detail {</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> </div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span><span class="comment">// returns the smallest fast unsigned integral type that has at least NumBits bits</span></div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span><span class="keyword">template</span> &lt;<span class="keywordtype">int</span> NumBits&gt;</div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span><span class="keyword">struct </span>min_fast_uint :</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> std::conditional</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> &lt;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> NumBits &lt;= 8,</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> std::uint_least8_t,</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> typename std::conditional</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> &lt;</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> NumBits &lt;= 16,</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> std::uint_least16_t,</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> typename std::conditional</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> &lt;</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> NumBits &lt;= 32,</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> std::uint_least32_t,</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> std::uintmax_t</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> &gt;::type</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> &gt;::type</div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> &gt;</div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span>{};</div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> </div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span>template &lt;int NumBits&gt;</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span>struct num_value_fn</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> : std::conditional&lt;NumBits &lt; 32, std::uint32_t, std::uint64_t&gt;</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span>{};</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> </div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span>template &lt;int NumBits&gt;</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span>struct max_value_fn</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> : std::conditional&lt;NumBits &lt;= 32, std::uint32_t, std::uint64_t&gt;</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span>{};</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> </div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span>} <span class="comment">// namespace detail</span></div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> </div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> </div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span>template &lt;int NumBits&gt;</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span>class packed_channel_value</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span>{</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span>public:</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> using integer_t = typename detail::min_fast_uint&lt;NumBits&gt;::type;</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> </div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> using value_type = packed_channel_value&lt;NumBits&gt;;</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> using reference = value_type&amp;;</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span> using const_reference = value_type const&amp;;</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> using pointer = value_type*;</div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> using const_pointer = value_type const*;</div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> static constexpr bool is_mutable = true;</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> </div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> static value_type min_value() { return 0; }</div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> static value_type max_value() { return low_bits_mask_t&lt; NumBits &gt;::sig_bits; }</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> </div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span> packed_channel_value() = default;</div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> packed_channel_value(integer_t v)</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> {</div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> value_ = static_cast&lt;integer_t&gt;(v &amp; low_bits_mask_t&lt;NumBits&gt;::sig_bits_fast);</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> }</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> </div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> template &lt;typename Scalar&gt;</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> packed_channel_value(Scalar v)</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> {</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> value_ = packed_channel_value(static_cast&lt;integer_t&gt;(v));</div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span> }</div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span> </div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span> static auto num_bits() -&gt; unsigned int { return NumBits; }</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> </div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> operator integer_t() const { return value_; }</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> </div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span>private:</div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> integer_t value_{};</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span>};</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> </div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span>namespace detail {</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> </div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span>template &lt;std::size_t K&gt;</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span>struct static_copy_bytes</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span>{</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> void operator()(unsigned char const* from, unsigned char* to) const</div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> {</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span> *to = *from;</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> static_copy_bytes&lt;K - 1&gt;()(++from, ++to);</div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span> }</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span>};</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> </div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span>template &lt;&gt;</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span>struct static_copy_bytes&lt;0&gt;</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span>{</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> void operator()(unsigned char const*, unsigned char*) const {}</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span>};</div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> </div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"> 358</span>template &lt;typename Derived, typename BitField, int NumBits, bool IsMutable&gt;</div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span>class packed_channel_reference_base</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span>{</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno"> 361</span>protected:</div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> using data_ptr_t = typename std::conditional&lt;IsMutable, void*, void const*&gt;::type;</div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno"> 363</span>public:</div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span> data_ptr_t _data_ptr; <span class="comment">// void* pointer to the first byte of the bit range</span></div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> </div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> using value_type = packed_channel_value&lt;NumBits&gt;;</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> using reference = Derived const;</div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> using pointer = value_type*;</div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> using const_pointer = value_type const*;</div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno"> 370</span> static constexpr int num_bits = NumBits;</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno"> 371</span> static constexpr bool is_mutable = IsMutable;</div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno"> 372</span> </div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno"> 373</span> static auto min_value() -&gt; value_type { return channel_traits&lt;value_type&gt;::min_value(); }</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno"> 374</span> static auto max_value() -&gt; value_type { return channel_traits&lt;value_type&gt;::max_value(); }</div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno"> 375</span> </div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno"> 376</span> using bitfield_t = BitField;</div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"> 377</span> using integer_t = typename value_type::integer_t;</div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span> </div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> packed_channel_reference_base(data_ptr_t data_ptr) : _data_ptr(data_ptr) {}</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> packed_channel_reference_base(packed_channel_reference_base const&amp; ref) : _data_ptr(ref._data_ptr) {}</div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span> </div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span> auto operator=(integer_t v) const -&gt; Derived const&amp; { set(v); return derived(); }</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno"> 383</span> </div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno"> 384</span> auto operator++() const -&gt; Derived const&amp; { set(get()+1); <span class="keywordflow">return</span> derived(); }</div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno"> 385</span> <span class="keyword">auto</span> operator--() const -&gt; Derived const&amp; { set(get()-1); <span class="keywordflow">return</span> derived(); }</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno"> 386</span> </div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> <span class="keyword">auto</span> operator++(<span class="keywordtype">int</span>) <span class="keyword">const</span> -&gt; Derived</div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> {</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno"> 389</span> Derived tmp=derived();</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> this-&gt;operator++(); <span class="keywordflow">return</span> tmp;</div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span> }</div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span> </div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span> <span class="keyword">auto</span> operator--(<span class="keywordtype">int</span>) <span class="keyword">const</span> -&gt; Derived</div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno"> 394</span> {</div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno"> 395</span> Derived tmp=derived();</div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno"> 396</span> this-&gt;operator--();</div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno"> 397</span> <span class="keywordflow">return</span> tmp;</div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno"> 398</span> }</div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno"> 399</span> </div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno"> 400</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Scalar2&gt;</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno"> 401</span> <span class="keyword">auto</span> operator+=(Scalar2 v) <span class="keyword">const</span> -&gt; Derived <span class="keyword">const</span>&amp;</div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno"> 402</span> {</div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span> set( <span class="keyword">static_cast&lt;</span>integer_t<span class="keyword">&gt;</span>( get() + v ));</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span> <span class="keywordflow">return</span> derived();</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span> }</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span> </div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno"> 407</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Scalar2&gt;</div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span> <span class="keyword">auto</span> operator-=(Scalar2 v) <span class="keyword">const</span> -&gt; Derived <span class="keyword">const</span>&amp;</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno"> 409</span> {</div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> set( <span class="keyword">static_cast&lt;</span>integer_t<span class="keyword">&gt;</span>( get() - v )); <span class="keywordflow">return</span> derived();</div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> }</div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> </div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Scalar2&gt;</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno"> 414</span> <span class="keyword">auto</span> operator*=(Scalar2 v) <span class="keyword">const</span> -&gt; Derived <span class="keyword">const</span>&amp;</div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno"> 415</span> {</div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno"> 416</span> set( <span class="keyword">static_cast&lt;</span>integer_t<span class="keyword">&gt;</span>( get() * v ));</div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno"> 417</span> <span class="keywordflow">return</span> derived();</div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno"> 418</span> }</div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno"> 419</span> </div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno"> 420</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Scalar2&gt;</div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno"> 421</span> <span class="keyword">auto</span> operator/=(Scalar2 v) <span class="keyword">const</span> -&gt; Derived <span class="keyword">const</span>&amp;</div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno"> 422</span> {</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno"> 423</span> set( <span class="keyword">static_cast&lt;</span>integer_t<span class="keyword">&gt;</span>( get() / v ));</div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span> <span class="keywordflow">return</span> derived();</div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno"> 425</span> }</div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span> </div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span> <span class="keyword">operator</span> integer_t()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> get(); }</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span> <span class="keyword">auto</span> operator&amp;() const -&gt; data_ptr_t {<span class="keywordflow">return</span> _data_ptr;}</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span> </div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno"> 430</span><span class="keyword">protected</span>:</div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno"> 431</span> </div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno"> 432</span> <span class="keyword">using </span>num_value_t = <span class="keyword">typename</span> detail::num_value_fn&lt;NumBits&gt;::type;</div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno"> 433</span> <span class="keyword">using </span>max_value_t = <span class="keyword">typename</span> detail::max_value_fn&lt;NumBits&gt;::type;</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno"> 434</span> </div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno"> 435</span> <span class="keyword">static</span> <span class="keyword">const</span> num_value_t num_values = <span class="keyword">static_cast&lt;</span> num_value_t <span class="keyword">&gt;</span>( 1 ) &lt;&lt; NumBits ;</div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno"> 436</span> <span class="keyword">static</span> <span class="keyword">const</span> max_value_t max_val = <span class="keyword">static_cast&lt;</span> max_value_t <span class="keyword">&gt;</span>( num_values - 1 );</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno"> 437</span> </div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno"> 438</span><span class="preprocessor">#if defined(BOOST_GIL_CONFIG_HAS_UNALIGNED_ACCESS)</span></div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno"> 439</span> <span class="keyword">const</span> bitfield_t&amp; get_data()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> *<span class="keyword">static_cast&lt;</span><span class="keyword">const </span>bitfield_t*<span class="keyword">&gt;</span>(_data_ptr); }</div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno"> 440</span> <span class="keywordtype">void</span> set_data(<span class="keyword">const</span> bitfield_t&amp; val)<span class="keyword"> const </span>{ *<span class="keyword">static_cast&lt;</span> bitfield_t*<span class="keyword">&gt;</span>(_data_ptr) = val; }</div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno"> 441</span><span class="preprocessor">#else</span></div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno"> 442</span> <span class="keyword">auto</span> get_data() const -&gt; bitfield_t</div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno"> 443</span> {</div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno"> 444</span> bitfield_t ret;</div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno"> 445</span> static_copy_bytes&lt;sizeof(bitfield_t) &gt;()(gil_reinterpret_cast_c&lt;const unsigned char*&gt;(_data_ptr),gil_reinterpret_cast&lt;unsigned char*&gt;(&amp;ret));</div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno"> 446</span> <span class="keywordflow">return</span> ret;</div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno"> 447</span> }</div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno"> 448</span> </div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno"> 449</span> <span class="keywordtype">void</span> set_data(bitfield_t <span class="keyword">const</span>&amp; val)<span class="keyword"> const</span></div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno"> 450</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno"> 451</span> static_copy_bytes&lt;sizeof(bitfield_t) &gt;()(gil_reinterpret_cast_c&lt;const unsigned char*&gt;(&amp;val),gil_reinterpret_cast&lt;unsigned char*&gt;(_data_ptr));</div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno"> 452</span> }</div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno"> 453</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno"> 454</span> </div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno"> 455</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno"> 456</span> <span class="keywordtype">void</span> set(integer_t value)<span class="keyword"> const </span>{ <span class="comment">// can this be done faster??</span></div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno"> 457</span> this-&gt;derived().set_unsafe(((value % num_values) + num_values) % num_values);</div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno"> 458</span> }</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno"> 459</span> <span class="keyword">auto</span> get() const -&gt; integer_t { <span class="keywordflow">return</span> derived().get(); }</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno"> 460</span> <span class="keyword">auto</span> derived() const -&gt; Derived const&amp; { <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keyword">const </span>Derived&amp;<span class="keyword">&gt;</span>(*this); }</div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno"> 461</span>};</div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno"> 462</span>} <span class="comment">// namespace detail</span></div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno"> 463</span> </div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno"> 477</span> </div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno"> 481</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keywordtype">int</span> FirstBit, <span class="keywordtype">int</span> NumBits, <span class="keywordtype">bool</span> IsMutable&gt;</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno"> 482</span><span class="keyword">class </span>packed_channel_reference;</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno"> 483</span> </div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno"> 487</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keywordtype">int</span> NumBits, <span class="keywordtype">bool</span> IsMutable&gt;</div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno"> 488</span><span class="keyword">class </span>packed_dynamic_channel_reference;</div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno"> 489</span> </div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno"> 492</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keywordtype">int</span> FirstBit, <span class="keywordtype">int</span> NumBits&gt;</div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno"> 493</span><span class="keyword">class </span>packed_channel_reference&lt;BitField, FirstBit, NumBits, false&gt;</div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno"> 494</span> : <span class="keyword">public</span> detail::packed_channel_reference_base</div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno"> 495</span> &lt;</div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno"> 496</span> packed_channel_reference&lt;BitField, FirstBit, NumBits, false&gt;,</div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno"> 497</span> BitField,</div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno"> 498</span> NumBits,</div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno"> 499</span> false</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno"> 500</span> &gt;</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno"> 501</span>{</div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno"> 502</span> <span class="keyword">using </span>parent_t = detail::packed_channel_reference_base</div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno"> 503</span> &lt;</div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno"> 504</span> packed_channel_reference&lt;BitField, FirstBit, NumBits, false&gt;,</div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno"> 505</span> BitField,</div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno"> 506</span> NumBits,</div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno"> 507</span> <span class="keyword">false</span></div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno"> 508</span> &gt;;</div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno"> 509</span> </div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno"> 510</span> <span class="keyword">friend</span> <span class="keyword">class </span>packed_channel_reference&lt;BitField, FirstBit, NumBits, true&gt;;</div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno"> 511</span> </div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno"> 512</span> <span class="keyword">static</span> <span class="keyword">const</span> BitField channel_mask = <span class="keyword">static_cast&lt;</span>BitField<span class="keyword">&gt;</span>(parent_t::max_val) &lt;&lt; FirstBit;</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno"> 513</span> </div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno"> 514</span> <span class="keywordtype">void</span> operator=(packed_channel_reference <span class="keyword">const</span>&amp;);</div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno"> 515</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno"> 516</span> <span class="keyword">using </span>const_reference = packed_channel_reference&lt;BitField,FirstBit,NumBits,false&gt; <span class="keyword">const</span>;</div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno"> 517</span> <span class="keyword">using </span>mutable_reference = packed_channel_reference&lt;BitField,FirstBit,NumBits,true&gt; <span class="keyword">const</span>;</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno"> 518</span> <span class="keyword">using </span>integer_t = <span class="keyword">typename</span> parent_t::integer_t;</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno"> 519</span> </div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno"> 520</span> <span class="keyword">explicit</span> packed_channel_reference(<span class="keyword">const</span> <span class="keywordtype">void</span>* data_ptr) : parent_t(data_ptr) {}</div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno"> 521</span> packed_channel_reference(<span class="keyword">const</span> packed_channel_reference&amp; ref) : parent_t(ref._data_ptr) {}</div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno"> 522</span> packed_channel_reference(<span class="keyword">const</span> mutable_reference&amp; ref) : parent_t(ref._data_ptr) {}</div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno"> 523</span> </div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno"> 524</span> <span class="keyword">auto</span> first_bit() const -&gt; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> { <span class="keywordflow">return</span> FirstBit; }</div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno"> 525</span> </div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno"> 526</span> <span class="keyword">auto</span> get() const -&gt; integer_t { <span class="keywordflow">return</span> integer_t((this-&gt;get_data()&amp;channel_mask) &gt;&gt; FirstBit); }</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno"> 527</span>};</div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno"> 528</span> </div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno"> 531</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keywordtype">int</span> FirstBit, <span class="keywordtype">int</span> NumBits&gt;</div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno"> 532</span><span class="keyword">class </span>packed_channel_reference&lt;BitField,FirstBit,NumBits,true&gt;</div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno"> 533</span> : <span class="keyword">public</span> detail::packed_channel_reference_base&lt;packed_channel_reference&lt;BitField,FirstBit,NumBits,true&gt;,BitField,NumBits,true&gt;</div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno"> 534</span>{</div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno"> 535</span> <span class="keyword">using </span>parent_t = detail::packed_channel_reference_base&lt;packed_channel_reference&lt;BitField,FirstBit,NumBits,true&gt;,BitField,NumBits,<span class="keyword">true</span>&gt;;</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno"> 536</span> <span class="keyword">friend</span> <span class="keyword">class </span>packed_channel_reference&lt;BitField,FirstBit,NumBits,false&gt;;</div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno"> 537</span> </div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno"> 538</span> <span class="keyword">static</span> <span class="keyword">const</span> BitField channel_mask = <span class="keyword">static_cast&lt;</span> BitField <span class="keyword">&gt;</span>( parent_t::max_val ) &lt;&lt; FirstBit;</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno"> 539</span> </div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno"> 540</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno"> 541</span> <span class="keyword">using </span>const_reference = packed_channel_reference&lt;BitField,FirstBit,NumBits,false&gt; <span class="keyword">const</span>;</div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno"> 542</span> <span class="keyword">using </span>mutable_reference = packed_channel_reference&lt;BitField,FirstBit,NumBits,true&gt; <span class="keyword">const</span>;</div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno"> 543</span> <span class="keyword">using </span>integer_t = <span class="keyword">typename</span> parent_t::integer_t;</div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno"> 544</span> </div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno"> 545</span> <span class="keyword">explicit</span> packed_channel_reference(<span class="keywordtype">void</span>* data_ptr) : parent_t(data_ptr) {}</div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno"> 546</span> packed_channel_reference(<span class="keyword">const</span> packed_channel_reference&amp; ref) : parent_t(ref._data_ptr) {}</div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno"> 547</span> </div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno"> 548</span> packed_channel_reference <span class="keyword">const</span>&amp; operator=(integer_t value)<span class="keyword"> const</span></div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno"> 549</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno"> 550</span> BOOST_ASSERT(value &lt;= parent_t::max_val);</div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno"> 551</span> set_unsafe(value);</div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno"> 552</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno"> 553</span> }</div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno"> 554</span> </div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno"> 555</span> <span class="keyword">auto</span> operator=(mutable_reference <span class="keyword">const</span>&amp; ref) <span class="keyword">const</span> -&gt; packed_channel_reference <span class="keyword">const</span>&amp; { set_from_reference(ref.get_data()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno"> 556</span> <span class="keyword">auto</span> operator=(const_reference <span class="keyword">const</span>&amp; ref) <span class="keyword">const</span> -&gt; packed_channel_reference <span class="keyword">const</span>&amp; { set_from_reference(ref.get_data()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno"> 557</span> </div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno"> 558</span> <span class="keyword">template</span> &lt;<span class="keywordtype">bool</span> Mutable1&gt;</div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno"> 559</span> <span class="keyword">auto</span> operator=(packed_dynamic_channel_reference&lt;BitField,NumBits,Mutable1&gt; <span class="keyword">const</span>&amp; ref) <span class="keyword">const</span> -&gt; packed_channel_reference <span class="keyword">const</span>&amp; { set_unsafe(ref.get()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno"> 560</span> </div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno"> 561</span> <span class="keyword">auto</span> first_bit() const -&gt; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> { <span class="keywordflow">return</span> FirstBit; }</div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno"> 562</span> </div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno"> 563</span> <span class="keyword">auto</span> get() const -&gt; integer_t { <span class="keywordflow">return</span> integer_t((this-&gt;get_data()&amp;channel_mask) &gt;&gt; FirstBit); }</div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno"> 564</span> <span class="keywordtype">void</span> set_unsafe(integer_t value)<span class="keyword"> const </span>{ this-&gt;set_data((this-&gt;get_data() &amp; ~channel_mask) | (( <span class="keyword">static_cast&lt;</span> BitField <span class="keyword">&gt;</span>( value )&lt;&lt;FirstBit))); }</div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno"> 565</span> </div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno"> 566</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno"> 567</span> <span class="keywordtype">void</span> set_from_reference(<span class="keyword">const</span> BitField&amp; other_bits)<span class="keyword"> const </span>{ this-&gt;set_data((this-&gt;get_data() &amp; ~channel_mask) | (other_bits &amp; channel_mask)); }</div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno"> 568</span>};</div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno"> 569</span> </div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno"> 570</span>}} <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno"> 571</span> </div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno"> 572</span><span class="keyword">namespace </span>std {</div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno"> 573</span><span class="comment">// We are forced to define swap inside std namespace because on some platforms (Visual Studio 8) STL calls swap qualified.</span></div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno"> 574</span><span class="comment">// swap with &#39;left bias&#39;:</span></div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno"> 575</span><span class="comment">// - swap between proxy and anything</span></div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno"> 576</span><span class="comment">// - swap between value type and proxy</span></div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno"> 577</span><span class="comment">// - swap between proxy and proxy</span></div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno"> 578</span> </div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno"> 581</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BF, <span class="keywordtype">int</span> FB, <span class="keywordtype">int</span> NB, <span class="keywordtype">bool</span> M, <span class="keyword">typename</span> R&gt;</div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno"> 582</span><span class="keyword">inline</span></div>
<div class="foldopen" id="foldopen00583" data-start="{" data-end="}">
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno"><a class="line" href="group___packed_channel_reference_model.html#gae88d6b790d0840af0e00f7b515e0ad36"> 583</a></span><span class="keywordtype">void</span> swap(boost::gil::packed_channel_reference&lt;BF, FB, NB, M&gt; <span class="keyword">const</span> x, R&amp; y)</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno"> 584</span>{</div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno"> 585</span> boost::gil::swap_proxy</div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno"> 586</span> &lt;</div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno"> 587</span> <span class="keyword">typename</span> boost::gil::packed_channel_reference&lt;BF, FB, NB, M&gt;::value_type</div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno"> 588</span> &gt;(x, y);</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno"> 589</span>}</div>
</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno"> 590</span> </div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno"> 591</span> </div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno"> 594</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BF, <span class="keywordtype">int</span> FB, <span class="keywordtype">int</span> NB, <span class="keywordtype">bool</span> M&gt;</div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno"> 595</span><span class="keyword">inline</span></div>
<div class="foldopen" id="foldopen00596" data-start="{" data-end="}">
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno"><a class="line" href="group___packed_channel_reference_model.html#gae4ee3c25f5e67ca8bf87f8fc81f72a75"> 596</a></span><span class="keywordtype">void</span> swap(</div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno"> 597</span> <span class="keyword">typename</span> boost::gil::packed_channel_reference&lt;BF, FB, NB, M&gt;::value_type&amp; x,</div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno"> 598</span> boost::gil::packed_channel_reference&lt;BF, FB, NB, M&gt; <span class="keyword">const</span> y)</div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno"> 599</span>{</div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno"> 600</span> boost::gil::swap_proxy</div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno"> 601</span> &lt;</div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno"> 602</span> <span class="keyword">typename</span> boost::gil::packed_channel_reference&lt;BF, FB, NB, M&gt;::value_type</div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno"> 603</span> &gt;(x,y);</div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno"> 604</span>}</div>
</div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno"> 605</span> </div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno"> 608</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BF, <span class="keywordtype">int</span> FB, <span class="keywordtype">int</span> NB, <span class="keywordtype">bool</span> M&gt; <span class="keyword">inline</span></div>
<div class="foldopen" id="foldopen00609" data-start="{" data-end="}">
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno"><a class="line" href="group___packed_channel_reference_model.html#ga8bcb31fccd0779546dac4f04f3237f89"> 609</a></span><span class="keywordtype">void</span> swap(</div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno"> 610</span> boost::gil::packed_channel_reference&lt;BF, FB, NB, M&gt; <span class="keyword">const</span> x,</div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno"> 611</span> boost::gil::packed_channel_reference&lt;BF, FB, NB, M&gt; <span class="keyword">const</span> y)</div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno"> 612</span>{</div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno"> 613</span> boost::gil::swap_proxy</div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno"> 614</span> &lt;</div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno"> 615</span> <span class="keyword">typename</span> boost::gil::packed_channel_reference&lt;BF, FB, NB, M&gt;::value_type</div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno"> 616</span> &gt;(x,y);</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno"> 617</span>}</div>
</div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno"> 618</span> </div>
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno"> 619</span>} <span class="comment">// namespace std</span></div>
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno"> 620</span> </div>
<div class="line"><a id="l00621" name="l00621"></a><span class="lineno"> 621</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a id="l00622" name="l00622"></a><span class="lineno"> 622</span> </div>
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno"> 637</span> </div>
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno"> 641</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keywordtype">int</span> NumBits&gt;</div>
<div class="foldopen" id="foldopen00642" data-start="{" data-end="};">
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1packed__dynamic__channel__reference_3_01_bit_field_00_01_num_bits_00_01false_01_4.html"> 642</a></span><span class="keyword">class </span>packed_dynamic_channel_reference&lt;BitField,NumBits,false&gt;</div>
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno"> 643</span> : <span class="keyword">public</span> detail::packed_channel_reference_base&lt;packed_dynamic_channel_reference&lt;BitField,NumBits,false&gt;,BitField,NumBits,false&gt;</div>
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno"> 644</span>{</div>
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno"> 645</span> <span class="keyword">using </span>parent_t = detail::packed_channel_reference_base&lt;packed_dynamic_channel_reference&lt;BitField,NumBits,false&gt;,BitField,NumBits,<span class="keyword">false</span>&gt;;</div>
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno"> 646</span> <span class="keyword">friend</span> <span class="keyword">class </span>packed_dynamic_channel_reference&lt;BitField,NumBits,true&gt;;</div>
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno"> 647</span> </div>
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno"> 648</span> <span class="keywordtype">unsigned</span> _first_bit; <span class="comment">// 0..7</span></div>
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno"> 649</span> </div>
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno"> 650</span> <span class="keywordtype">void</span> operator=(<span class="keyword">const</span> packed_dynamic_channel_reference&amp;);</div>
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno"> 651</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00652" name="l00652"></a><span class="lineno"> 652</span> <span class="keyword">using </span>const_reference = packed_dynamic_channel_reference&lt;BitField,NumBits,false&gt; <span class="keyword">const</span>;</div>
<div class="line"><a id="l00653" name="l00653"></a><span class="lineno"> 653</span> <span class="keyword">using </span>mutable_reference = packed_dynamic_channel_reference&lt;BitField,NumBits,true&gt; <span class="keyword">const</span>;</div>
<div class="line"><a id="l00654" name="l00654"></a><span class="lineno"> 654</span> <span class="keyword">using </span>integer_t = <span class="keyword">typename</span> parent_t::integer_t;</div>
<div class="line"><a id="l00655" name="l00655"></a><span class="lineno"> 655</span> </div>
<div class="line"><a id="l00656" name="l00656"></a><span class="lineno"> 656</span> packed_dynamic_channel_reference(<span class="keywordtype">void</span> <span class="keyword">const</span>* data_ptr, <span class="keywordtype">unsigned</span> first_bit) : parent_t(data_ptr), _first_bit(first_bit) {}</div>
<div class="line"><a id="l00657" name="l00657"></a><span class="lineno"> 657</span> packed_dynamic_channel_reference(const_reference <span class="keyword">const</span>&amp; ref) : parent_t(ref._data_ptr), _first_bit(ref._first_bit) {}</div>
<div class="line"><a id="l00658" name="l00658"></a><span class="lineno"> 658</span> packed_dynamic_channel_reference(mutable_reference <span class="keyword">const</span>&amp; ref) : parent_t(ref._data_ptr), _first_bit(ref._first_bit) {}</div>
<div class="line"><a id="l00659" name="l00659"></a><span class="lineno"> 659</span> </div>
<div class="line"><a id="l00660" name="l00660"></a><span class="lineno"> 660</span> <span class="keyword">auto</span> first_bit() <span class="keyword">const</span> -&gt; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> { <span class="keywordflow">return</span> _first_bit; }</div>
<div class="line"><a id="l00661" name="l00661"></a><span class="lineno"> 661</span> </div>
<div class="line"><a id="l00662" name="l00662"></a><span class="lineno"> 662</span> <span class="keyword">auto</span> get() <span class="keyword">const</span> -&gt; integer_t</div>
<div class="line"><a id="l00663" name="l00663"></a><span class="lineno"> 663</span> {</div>
<div class="line"><a id="l00664" name="l00664"></a><span class="lineno"> 664</span> <span class="keyword">const</span> BitField channel_mask = <span class="keyword">static_cast&lt;</span> integer_t <span class="keyword">&gt;</span>( parent_t::max_val ) &lt;&lt;_first_bit;</div>
<div class="line"><a id="l00665" name="l00665"></a><span class="lineno"> 665</span> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span> integer_t <span class="keyword">&gt;</span>(( this-&gt;get_data()&amp;channel_mask ) &gt;&gt; _first_bit );</div>
<div class="line"><a id="l00666" name="l00666"></a><span class="lineno"> 666</span> }</div>
<div class="line"><a id="l00667" name="l00667"></a><span class="lineno"> 667</span>};</div>
</div>
<div class="line"><a id="l00668" name="l00668"></a><span class="lineno"> 668</span> </div>
<div class="line"><a id="l00672" name="l00672"></a><span class="lineno"> 672</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField, <span class="keywordtype">int</span> NumBits&gt;</div>
<div class="foldopen" id="foldopen00673" data-start="{" data-end="};">
<div class="line"><a id="l00673" name="l00673"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1packed__dynamic__channel__reference_3_01_bit_field_00_01_num_bits_00_01true_01_4.html"> 673</a></span><span class="keyword">class </span>packed_dynamic_channel_reference&lt;BitField,NumBits,true&gt;</div>
<div class="line"><a id="l00674" name="l00674"></a><span class="lineno"> 674</span> : <span class="keyword">public</span> detail::packed_channel_reference_base&lt;packed_dynamic_channel_reference&lt;BitField,NumBits,true&gt;,BitField,NumBits,true&gt;</div>
<div class="line"><a id="l00675" name="l00675"></a><span class="lineno"> 675</span>{</div>
<div class="line"><a id="l00676" name="l00676"></a><span class="lineno"> 676</span> <span class="keyword">using </span>parent_t = detail::packed_channel_reference_base&lt;packed_dynamic_channel_reference&lt;BitField,NumBits,true&gt;,BitField,NumBits,<span class="keyword">true</span>&gt;;</div>
<div class="line"><a id="l00677" name="l00677"></a><span class="lineno"> 677</span> <span class="keyword">friend</span> <span class="keyword">class </span>packed_dynamic_channel_reference&lt;BitField,NumBits,false&gt;;</div>
<div class="line"><a id="l00678" name="l00678"></a><span class="lineno"> 678</span> </div>
<div class="line"><a id="l00679" name="l00679"></a><span class="lineno"> 679</span> <span class="keywordtype">unsigned</span> _first_bit;</div>
<div class="line"><a id="l00680" name="l00680"></a><span class="lineno"> 680</span> </div>
<div class="line"><a id="l00681" name="l00681"></a><span class="lineno"> 681</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00682" name="l00682"></a><span class="lineno"> 682</span> <span class="keyword">using </span>const_reference = packed_dynamic_channel_reference&lt;BitField,NumBits,false&gt; <span class="keyword">const</span>;</div>
<div class="line"><a id="l00683" name="l00683"></a><span class="lineno"> 683</span> <span class="keyword">using </span>mutable_reference = packed_dynamic_channel_reference&lt;BitField,NumBits,true&gt; <span class="keyword">const</span>;</div>
<div class="line"><a id="l00684" name="l00684"></a><span class="lineno"> 684</span> <span class="keyword">using </span>integer_t = <span class="keyword">typename</span> parent_t::integer_t;</div>
<div class="line"><a id="l00685" name="l00685"></a><span class="lineno"> 685</span> </div>
<div class="line"><a id="l00686" name="l00686"></a><span class="lineno"> 686</span> packed_dynamic_channel_reference(<span class="keywordtype">void</span>* data_ptr, <span class="keywordtype">unsigned</span> first_bit) : parent_t(data_ptr), _first_bit(first_bit) {}</div>
<div class="line"><a id="l00687" name="l00687"></a><span class="lineno"> 687</span> packed_dynamic_channel_reference(packed_dynamic_channel_reference <span class="keyword">const</span>&amp; ref) : parent_t(ref._data_ptr), _first_bit(ref._first_bit) {}</div>
<div class="line"><a id="l00688" name="l00688"></a><span class="lineno"> 688</span> </div>
<div class="line"><a id="l00689" name="l00689"></a><span class="lineno"> 689</span> <span class="keyword">auto</span> operator=(integer_t value) <span class="keyword">const</span> -&gt; packed_dynamic_channel_reference <span class="keyword">const</span>&amp;</div>
<div class="line"><a id="l00690" name="l00690"></a><span class="lineno"> 690</span> {</div>
<div class="line"><a id="l00691" name="l00691"></a><span class="lineno"> 691</span> BOOST_ASSERT(value &lt;= parent_t::max_val);</div>
<div class="line"><a id="l00692" name="l00692"></a><span class="lineno"> 692</span> set_unsafe(value);</div>
<div class="line"><a id="l00693" name="l00693"></a><span class="lineno"> 693</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00694" name="l00694"></a><span class="lineno"> 694</span> }</div>
<div class="line"><a id="l00695" name="l00695"></a><span class="lineno"> 695</span> </div>
<div class="line"><a id="l00696" name="l00696"></a><span class="lineno"> 696</span> <span class="keyword">auto</span> operator=(mutable_reference <span class="keyword">const</span>&amp; ref) <span class="keyword">const</span> -&gt; packed_dynamic_channel_reference <span class="keyword">const</span>&amp; { set_unsafe(ref.get()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00697" name="l00697"></a><span class="lineno"> 697</span> <span class="keyword">auto</span> operator=(const_reference <span class="keyword">const</span>&amp; ref) <span class="keyword">const</span> -&gt; packed_dynamic_channel_reference <span class="keyword">const</span>&amp; { set_unsafe(ref.get()); <span class="keywordflow">return</span> *<span class="keyword">this</span>; }</div>
<div class="line"><a id="l00698" name="l00698"></a><span class="lineno"> 698</span> </div>
<div class="line"><a id="l00699" name="l00699"></a><span class="lineno"> 699</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> BitField1, <span class="keywordtype">int</span> FirstBit1, <span class="keywordtype">bool</span> Mutable1&gt;</div>
<div class="line"><a id="l00700" name="l00700"></a><span class="lineno"> 700</span> <span class="keyword">auto</span> operator=(packed_channel_reference&lt;BitField1, FirstBit1, NumBits, Mutable1&gt; <span class="keyword">const</span>&amp; ref) <span class="keyword">const</span> -&gt; packed_dynamic_channel_reference <span class="keyword">const</span>&amp;</div>
<div class="line"><a id="l00701" name="l00701"></a><span class="lineno"> 701</span> {</div>
<div class="line"><a id="l00702" name="l00702"></a><span class="lineno"> 702</span> set_unsafe(ref.get());</div>
<div class="line"><a id="l00703" name="l00703"></a><span class="lineno"> 703</span> <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div>
<div class="line"><a id="l00704" name="l00704"></a><span class="lineno"> 704</span> }</div>
<div class="line"><a id="l00705" name="l00705"></a><span class="lineno"> 705</span> </div>
<div class="line"><a id="l00706" name="l00706"></a><span class="lineno"> 706</span> <span class="keyword">auto</span> first_bit() <span class="keyword">const</span> -&gt; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> { <span class="keywordflow">return</span> _first_bit; }</div>
<div class="line"><a id="l00707" name="l00707"></a><span class="lineno"> 707</span> </div>
<div class="line"><a id="l00708" name="l00708"></a><span class="lineno"> 708</span> <span class="keyword">auto</span> get() <span class="keyword">const</span> -&gt; integer_t</div>
<div class="line"><a id="l00709" name="l00709"></a><span class="lineno"> 709</span> {</div>
<div class="line"><a id="l00710" name="l00710"></a><span class="lineno"> 710</span> BitField <span class="keyword">const</span> channel_mask = <span class="keyword">static_cast&lt;</span> integer_t <span class="keyword">&gt;</span>( parent_t::max_val ) &lt;&lt; _first_bit;</div>
<div class="line"><a id="l00711" name="l00711"></a><span class="lineno"> 711</span> <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span> integer_t <span class="keyword">&gt;</span>(( this-&gt;get_data()&amp;channel_mask ) &gt;&gt; _first_bit );</div>
<div class="line"><a id="l00712" name="l00712"></a><span class="lineno"> 712</span> }</div>
<div class="line"><a id="l00713" name="l00713"></a><span class="lineno"> 713</span> </div>
<div class="line"><a id="l00714" name="l00714"></a><span class="lineno"> 714</span> <span class="keywordtype">void</span> set_unsafe(integer_t value)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00715" name="l00715"></a><span class="lineno"> 715</span> <span class="keyword">const</span> BitField channel_mask = <span class="keyword">static_cast&lt;</span> integer_t <span class="keyword">&gt;</span>( parent_t::max_val ) &lt;&lt; _first_bit;</div>
<div class="line"><a id="l00716" name="l00716"></a><span class="lineno"> 716</span> this-&gt;set_data((this-&gt;get_data() &amp; ~channel_mask) | value&lt;&lt;_first_bit);</div>
<div class="line"><a id="l00717" name="l00717"></a><span class="lineno"> 717</span> }</div>
<div class="line"><a id="l00718" name="l00718"></a><span class="lineno"> 718</span>};</div>
</div>
<div class="line"><a id="l00719" name="l00719"></a><span class="lineno"> 719</span>} } <span class="comment">// namespace boost::gil</span></div>
<div class="line"><a id="l00720" name="l00720"></a><span class="lineno"> 720</span> </div>
<div class="line"><a id="l00721" name="l00721"></a><span class="lineno"> 721</span><span class="keyword">namespace </span>std {</div>
<div class="line"><a id="l00722" name="l00722"></a><span class="lineno"> 722</span><span class="comment">// We are forced to define swap inside std namespace because on some platforms (Visual Studio 8) STL calls swap qualified.</span></div>
<div class="line"><a id="l00723" name="l00723"></a><span class="lineno"> 723</span><span class="comment">// swap with &#39;left bias&#39;:</span></div>
<div class="line"><a id="l00724" name="l00724"></a><span class="lineno"> 724</span><span class="comment">// - swap between proxy and anything</span></div>
<div class="line"><a id="l00725" name="l00725"></a><span class="lineno"> 725</span><span class="comment">// - swap between value type and proxy</span></div>
<div class="line"><a id="l00726" name="l00726"></a><span class="lineno"> 726</span><span class="comment">// - swap between proxy and proxy</span></div>
<div class="line"><a id="l00727" name="l00727"></a><span class="lineno"> 727</span> </div>
<div class="line"><a id="l00728" name="l00728"></a><span class="lineno"> 728</span> </div>
<div class="line"><a id="l00731" name="l00731"></a><span class="lineno"> 731</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BF, <span class="keywordtype">int</span> NB, <span class="keywordtype">bool</span> M, <span class="keyword">typename</span> R&gt; <span class="keyword">inline</span></div>
<div class="foldopen" id="foldopen00732" data-start="{" data-end="}">
<div class="line"><a id="l00732" name="l00732"></a><span class="lineno"><a class="line" href="group___packed_channel_dynamic_reference_model.html#ga819b2b48ceacea523b2d9188ad2e2f11"> 732</a></span><span class="keywordtype">void</span> swap(<span class="keyword">const</span> boost::gil::packed_dynamic_channel_reference&lt;BF,NB,M&gt; x, R&amp; y) {</div>
<div class="line"><a id="l00733" name="l00733"></a><span class="lineno"> 733</span> boost::gil::swap_proxy&lt;typename boost::gil::packed_dynamic_channel_reference&lt;BF,NB,M&gt;::value_type&gt;(x,y);</div>
<div class="line"><a id="l00734" name="l00734"></a><span class="lineno"> 734</span>}</div>
</div>
<div class="line"><a id="l00735" name="l00735"></a><span class="lineno"> 735</span> </div>
<div class="line"><a id="l00736" name="l00736"></a><span class="lineno"> 736</span> </div>
<div class="line"><a id="l00739" name="l00739"></a><span class="lineno"> 739</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BF, <span class="keywordtype">int</span> NB, <span class="keywordtype">bool</span> M&gt; <span class="keyword">inline</span></div>
<div class="foldopen" id="foldopen00740" data-start="{" data-end="}">
<div class="line"><a id="l00740" name="l00740"></a><span class="lineno"><a class="line" href="group___packed_channel_dynamic_reference_model.html#ga272f55c1c65415235aae51f8dbba5ccb"> 740</a></span><span class="keywordtype">void</span> swap(<span class="keyword">typename</span> boost::gil::packed_dynamic_channel_reference&lt;BF,NB,M&gt;::value_type&amp; x, <span class="keyword">const</span> boost::gil::packed_dynamic_channel_reference&lt;BF,NB,M&gt; y) {</div>
<div class="line"><a id="l00741" name="l00741"></a><span class="lineno"> 741</span> boost::gil::swap_proxy&lt;typename boost::gil::packed_dynamic_channel_reference&lt;BF,NB,M&gt;::value_type&gt;(x,y);</div>
<div class="line"><a id="l00742" name="l00742"></a><span class="lineno"> 742</span>}</div>
</div>
<div class="line"><a id="l00743" name="l00743"></a><span class="lineno"> 743</span> </div>
<div class="line"><a id="l00746" name="l00746"></a><span class="lineno"> 746</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> BF, <span class="keywordtype">int</span> NB, <span class="keywordtype">bool</span> M&gt; <span class="keyword">inline</span></div>
<div class="foldopen" id="foldopen00747" data-start="{" data-end="}">
<div class="line"><a id="l00747" name="l00747"></a><span class="lineno"><a class="line" href="group___packed_channel_dynamic_reference_model.html#ga31471d00682051688ae336bdf3cd431f"> 747</a></span><span class="keywordtype">void</span> swap(<span class="keyword">const</span> boost::gil::packed_dynamic_channel_reference&lt;BF,NB,M&gt; x, <span class="keyword">const</span> boost::gil::packed_dynamic_channel_reference&lt;BF,NB,M&gt; y) {</div>
<div class="line"><a id="l00748" name="l00748"></a><span class="lineno"> 748</span> boost::gil::swap_proxy&lt;typename boost::gil::packed_dynamic_channel_reference&lt;BF,NB,M&gt;::value_type&gt;(x,y);</div>
<div class="line"><a id="l00749" name="l00749"></a><span class="lineno"> 749</span>}</div>
</div>
<div class="line"><a id="l00750" name="l00750"></a><span class="lineno"> 750</span>} <span class="comment">// namespace std</span></div>
<div class="line"><a id="l00751" name="l00751"></a><span class="lineno"> 751</span> </div>
<div class="line"><a id="l00752" name="l00752"></a><span class="lineno"> 752</span><span class="comment">// \brief Determines the fundamental type which may be used, e.g., to cast from larger to smaller channel types.</span></div>
<div class="line"><a id="l00753" name="l00753"></a><span class="lineno"> 753</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a id="l00754" name="l00754"></a><span class="lineno"> 754</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00755" name="l00755"></a><span class="lineno"> 755</span><span class="keyword">struct </span>base_channel_type_impl { <span class="keyword">using </span>type = T; };</div>
<div class="line"><a id="l00756" name="l00756"></a><span class="lineno"> 756</span> </div>
<div class="line"><a id="l00757" name="l00757"></a><span class="lineno"> 757</span><span class="keyword">template</span> &lt;<span class="keywordtype">int</span> N&gt;</div>
<div class="line"><a id="l00758" name="l00758"></a><span class="lineno"> 758</span><span class="keyword">struct </span>base_channel_type_impl&lt;packed_channel_value&lt;N&gt; &gt;</div>
<div class="line"><a id="l00759" name="l00759"></a><span class="lineno"> 759</span>{ <span class="keyword">using </span>type = <span class="keyword">typename</span> packed_channel_value&lt;N&gt;::integer_t; };</div>
<div class="line"><a id="l00760" name="l00760"></a><span class="lineno"> 760</span> </div>
<div class="line"><a id="l00761" name="l00761"></a><span class="lineno"> 761</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> B, <span class="keywordtype">int</span> F, <span class="keywordtype">int</span> N, <span class="keywordtype">bool</span> M&gt;</div>
<div class="line"><a id="l00762" name="l00762"></a><span class="lineno"> 762</span><span class="keyword">struct </span>base_channel_type_impl&lt;packed_channel_reference&lt;B, F, N, M&gt; &gt;</div>
<div class="line"><a id="l00763" name="l00763"></a><span class="lineno"> 763</span>{</div>
<div class="line"><a id="l00764" name="l00764"></a><span class="lineno"> 764</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> packed_channel_reference&lt;B,F,N,M&gt;::integer_t;</div>
<div class="line"><a id="l00765" name="l00765"></a><span class="lineno"> 765</span>};</div>
<div class="line"><a id="l00766" name="l00766"></a><span class="lineno"> 766</span> </div>
<div class="line"><a id="l00767" name="l00767"></a><span class="lineno"> 767</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> B, <span class="keywordtype">int</span> N, <span class="keywordtype">bool</span> M&gt;</div>
<div class="line"><a id="l00768" name="l00768"></a><span class="lineno"> 768</span><span class="keyword">struct </span>base_channel_type_impl&lt;packed_dynamic_channel_reference&lt;B, N, M&gt; &gt;</div>
<div class="line"><a id="l00769" name="l00769"></a><span class="lineno"> 769</span>{</div>
<div class="line"><a id="l00770" name="l00770"></a><span class="lineno"> 770</span> <span class="keyword">using </span>type = <span class="keyword">typename</span> packed_dynamic_channel_reference&lt;B,N,M&gt;::integer_t;</div>
<div class="line"><a id="l00771" name="l00771"></a><span class="lineno"> 771</span>};</div>
<div class="line"><a id="l00772" name="l00772"></a><span class="lineno"> 772</span> </div>
<div class="line"><a id="l00773" name="l00773"></a><span class="lineno"> 773</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> MinV, <span class="keyword">typename</span> MaxV&gt;</div>
<div class="line"><a id="l00774" name="l00774"></a><span class="lineno"> 774</span><span class="keyword">struct </span>base_channel_type_impl&lt;scoped_channel_value&lt;ChannelValue, MinV, MaxV&gt; &gt;</div>
<div class="line"><a id="l00775" name="l00775"></a><span class="lineno"> 775</span>{ <span class="keyword">using </span>type = ChannelValue; };</div>
<div class="line"><a id="l00776" name="l00776"></a><span class="lineno"> 776</span> </div>
<div class="line"><a id="l00777" name="l00777"></a><span class="lineno"> 777</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a id="l00778" name="l00778"></a><span class="lineno"> 778</span><span class="keyword">struct </span>base_channel_type : base_channel_type_impl&lt;typename std::remove_cv&lt;T&gt;::type&gt; {};</div>
<div class="line"><a id="l00779" name="l00779"></a><span class="lineno"> 779</span> </div>
<div class="line"><a id="l00780" name="l00780"></a><span class="lineno"> 780</span>}} <span class="comment">//namespace boost::gil</span></div>
<div class="line"><a id="l00781" name="l00781"></a><span class="lineno"> 781</span> </div>
<div class="line"><a id="l00782" name="l00782"></a><span class="lineno"> 782</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>
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