| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061 |
- <!-- HTML header for doxygen 1.8.13-->
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
- <meta http-equiv="X-UA-Compatible" content="IE=9"/>
- <meta name="generator" content="Doxygen 1.8.15"/>
- <meta name="viewport" content="width=device-width, initial-scale=1"/>
- <title>Generic Image Library: packed_pixel.hpp Source File</title>
- <link href="tabs.css" rel="stylesheet" type="text/css"/>
- <script type="text/javascript" src="jquery.js"></script>
- <script type="text/javascript" src="dynsections.js"></script>
- <link href="doxygen.css" rel="stylesheet" type="text/css" />
- <link href="doxygen-boost.css" rel="stylesheet" type="text/css"/>
- </head>
- <body>
- <div class="boost-header">
- <table border="0" cellpadding="7" cellspacing="0" width="100%" summary="header">
- <tr>
- <td valign="top" width="300">
- <h3><a href="../index.html"><img alt="Boost GIL" src="../_static/gil.png" border="0"></a></h3>
- </td>
- <td ><h1 align="center"><a href="../index.html"></a></h1></td>
- <td></td>
- </tr>
- </table>
- </div>
- <hr/>
- <div id="top"><!-- do not remove this div, it is closed by doxygen! -->
- <!-- Generated by Doxygen 1.8.15 -->
- <script type="text/javascript" src="menudata.js"></script>
- <script type="text/javascript" src="menu.js"></script>
- <script type="text/javascript">
- /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
- $(function() {
- initMenu('',false,false,'search.php','Search');
- });
- /* @license-end */</script>
- <div id="main-nav"></div>
- <div id="nav-path" class="navpath">
- <ul>
- <li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_1878a3f4746a95c6aad317458cc7ef80.html">boost</a></li><li class="navelem"><a class="el" href="dir_df4750f408086f9b9c1b5ee4251365ff.html">gil</a></li> </ul>
- </div>
- </div><!-- top -->
- <div class="header">
- <div class="headertitle">
- <div class="title">packed_pixel.hpp</div> </div>
- </div><!--header-->
- <div class="contents">
- <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#ifndef BOOST_GIL_PACKED_PIXEL_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#define BOOST_GIL_PACKED_PIXEL_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <boost/gil/pixel.hpp></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <boost/gil/detail/mp11.hpp></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <functional></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <type_traits></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefs, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">struct </span>packed_pixel</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  BitField _bitfield{0}; <span class="comment">// TODO: Make private</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">using</span> layout_t = Layout;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">using</span> value_type = packed_pixel<BitField, ChannelRefs, Layout>;</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">using</span> reference = value_type&;</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">using</span> const_reference = value_type <span class="keyword">const</span>&;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">static</span> constexpr <span class="keywordtype">bool</span> is_mutable =</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  channel_traits<mp11::mp_front<ChannelRefs>>::is_mutable;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  packed_pixel() = <span class="keywordflow">default</span>;</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">explicit</span> packed_pixel(<span class="keyword">const</span> BitField& bitfield) : _bitfield(bitfield) {}</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// Construct from another compatible pixel type</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  packed_pixel(<span class="keyword">const</span> packed_pixel& p) : _bitfield(p._bitfield) {}</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  packed_pixel(Pixel <span class="keyword">const</span>& p,</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">typename</span> std::enable_if<is_pixel<Pixel>::value>::type* <span class="comment">/*dummy*/</span> = <span class="keyword">nullptr</span>)</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  {</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  check_compatible<Pixel>();</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  static_copy(p, *<span class="keyword">this</span>);</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  }</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1)</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  : _bitfield(0)</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  static_assert(num_channels<packed_pixel>::value == 2, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  gil::at_c<0>(*<span class="keyword">this</span>) = chan0; gil::at_c<1>(*<span class="keyword">this</span>) = chan1;</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1, <span class="keywordtype">int</span> chan2)</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  : _bitfield(0)</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  static_assert(num_channels<packed_pixel>::value == 3, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  gil::at_c<0>(*<span class="keyword">this</span>) = chan0;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  gil::at_c<1>(*<span class="keyword">this</span>) = chan1;</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  gil::at_c<2>(*<span class="keyword">this</span>) = chan2;</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  }</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1, <span class="keywordtype">int</span> chan2, <span class="keywordtype">int</span> chan3)</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  : _bitfield(0)</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  {</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  static_assert(num_channels<packed_pixel>::value == 4, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  gil::at_c<0>(*<span class="keyword">this</span>) = chan0;</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  gil::at_c<1>(*<span class="keyword">this</span>) = chan1;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  gil::at_c<2>(*<span class="keyword">this</span>) = chan2;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  gil::at_c<3>(*<span class="keyword">this</span>) = chan3;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  packed_pixel(<span class="keywordtype">int</span> chan0, <span class="keywordtype">int</span> chan1, <span class="keywordtype">int</span> chan2, <span class="keywordtype">int</span> chan3, <span class="keywordtype">int</span> chan4)</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  : _bitfield(0)</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  {</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  static_assert(num_channels<packed_pixel>::value == 5, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  gil::at_c<0>(*<span class="keyword">this</span>) = chan0;</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  gil::at_c<1>(*<span class="keyword">this</span>) = chan1;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  gil::at_c<2>(*<span class="keyword">this</span>) = chan2;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  gil::at_c<3>(*<span class="keyword">this</span>) = chan3;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  gil::at_c<4>(*<span class="keyword">this</span>) = chan4;</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  }</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">auto</span> operator=(packed_pixel <span class="keyword">const</span>& p) -> packed_pixel&</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  {</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  _bitfield = p._bitfield;</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel></div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">auto</span> operator=(Pixel <span class="keyword">const</span>& p) -> packed_pixel&</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  {</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  assign(p, is_pixel<Pixel>());</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  }</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordtype">bool</span> operator==(Pixel <span class="keyword">const</span>& p)<span class="keyword"> const</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">return</span> equal(p, is_pixel<Pixel>());</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">bool</span> operator!=(Pixel <span class="keyword">const</span>& p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> !(*<span class="keyword">this</span>==p); }</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="keyword">private</span>:</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> check_compatible()</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  {</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  gil_function_requires<PixelsCompatibleConcept<Pixel, packed_pixel>>();</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordtype">void</span> assign(Pixel <span class="keyword">const</span>& p, std::true_type)</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  {</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  check_compatible<Pixel>();</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  static_copy(p, *<span class="keyword">this</span>);</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Pixel></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordtype">bool</span> equal(Pixel <span class="keyword">const</span>& p, std::true_type)<span class="keyword"> const</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  check_compatible<Pixel>();</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">return</span> static_equal(*<span class="keyword">this</span>, p);</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  }</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">// Support for assignment/equality comparison of a channel with a grayscale pixel</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">static</span> <span class="keywordtype">void</span> check_gray()</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  static_assert(std::is_same<typename Layout::color_space_t, gray_t>::value, <span class="stringliteral">""</span>);</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Channel></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordtype">void</span> assign(Channel <span class="keyword">const</span>& channel, std::false_type)</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  {</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  check_gray();</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  gil::at_c<0>(*<span class="keyword">this</span>) = channel;</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  }</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Channel></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordtype">bool</span> equal (Channel <span class="keyword">const</span>& channel, std::false_type)<span class="keyword"> const</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  check_gray();</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">return</span> gil::at_c<0>(*<span class="keyword">this</span>) == channel;</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="keyword">public</span>:</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keyword">auto</span> operator=(<span class="keywordtype">int</span> channel) -> packed_pixel&</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  {</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  check_gray();</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  gil::at_c<0>(*<span class="keyword">this</span>) = channel;</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordtype">bool</span> operator==(<span class="keywordtype">int</span> channel)<span class="keyword"> const</span></div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="keyword"> </span>{</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  check_gray();</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">return</span> gil::at_c<0>(*<span class="keyword">this</span>) == channel;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> };</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment">// ColorBasedConcept</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"></span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefs, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="keyword">struct </span>kth_element_type<packed_pixel<BitField, ChannelRefs, Layout>, K></div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> {</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keyword">using</span> type = <span class="keyword">typename</span> channel_traits<mp11::mp_at_c<ChannelRefs, K>>::value_type;</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> };</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefs, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K></div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="keyword">struct </span>kth_element_reference_type<packed_pixel<BitField, ChannelRefs, Layout>, K></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span> {</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">using</span> type = <span class="keyword">typename</span> channel_traits<mp11::mp_at_c<ChannelRefs, K>>::reference;</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> };</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span> </div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefs, <span class="keyword">typename</span> Layout, <span class="keywordtype">int</span> K></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">struct </span>kth_element_const_reference_type<packed_pixel<BitField, ChannelRefs, Layout>, K></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span> {</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">using</span> type = <span class="keyword">typename</span> channel_traits<mp11::mp_at_c<ChannelRefs, K>>::const_reference;</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> };</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L></div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="keyword">inline</span></div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="keyword">auto</span> <a class="code" href="group___color_base_model_homogeneous.html#gae2eaf5eecbad94d7dc6432b8f759fba0">at_c</a>(packed_pixel<P, C, L>& p)</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  -> <span class="keyword">typename</span> kth_element_reference_type<packed_pixel<P, C, L>, K>::type</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> {</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">return</span> <span class="keyword">typename</span> kth_element_reference_type</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  packed_pixel<P, C, L>,</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  K</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  >::type{&p._bitfield};</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> }</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="keyword">template</span> <<span class="keywordtype">int</span> K, <span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="keyword">inline</span></div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="keyword">auto</span> <a class="code" href="group___color_base_model_homogeneous.html#gae2eaf5eecbad94d7dc6432b8f759fba0">at_c</a>(<span class="keyword">const</span> packed_pixel<P, C, L>& p)</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  -> <span class="keyword">typename</span> kth_element_const_reference_type<packed_pixel<P, C, L>, K>::type</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span> {</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">return</span> <span class="keyword">typename</span> kth_element_const_reference_type</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  packed_pixel<P, C, L>,</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  K>::type{&p._bitfield};</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span> }</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="comment">// PixelConcept</span></div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment"></span></div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="comment">// Metafunction predicate that flags packed_pixel as a model of PixelConcept. Required by PixelConcept</span></div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="keyword">template</span> <<span class="keyword">typename</span> BitField, <span class="keyword">typename</span> ChannelRefs, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="keyword">struct </span>is_pixel<packed_pixel<BitField, ChannelRefs, Layout>> : std::true_type {};</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="comment">// PixelBasedConcept</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment"></span></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="keyword">struct </span>color_space_type<packed_pixel<P, C, Layout>></div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span> {</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keyword">using</span> type = <span class="keyword">typename</span> Layout::color_space_t;</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span> };</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="keyword">struct </span>channel_mapping_type<packed_pixel<P, C, Layout>></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> {</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keyword">using</span> type = <span class="keyword">typename</span> Layout::channel_mapping_t;</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> };</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> Layout></div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="keyword">struct </span>is_planar<packed_pixel<P, C, Layout>> : std::false_type {};</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> </div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L></div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="keyword">struct </span>iterator_is_mutable<packed_pixel<P, C, L>*></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  : std::integral_constant<bool, packed_pixel<P, C, L>::is_mutable></div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> {};</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span> </div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="keyword">template</span> <<span class="keyword">typename</span> P, <span class="keyword">typename</span> C, <span class="keyword">typename</span> L></div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="keyword">struct </span>iterator_is_mutable<const packed_pixel<P, C, L>*> : std::false_type {};</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> }} <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="group___color_base_model_homogeneous_html_gae2eaf5eecbad94d7dc6432b8f759fba0"><div class="ttname"><a href="group___color_base_model_homogeneous.html#gae2eaf5eecbad94d7dc6432b8f759fba0">boost::gil::at_c</a></div><div class="ttdeci">auto at_c(detail::homogeneous_color_base< E, L, N > &p) -> typename std::add_lvalue_reference< E >::type</div><div class="ttdoc">Provides mutable access to the K-th element, in physical order.</div><div class="ttdef"><b>Definition:</b> color_base.hpp:597</div></div>
- </div><!-- fragment --></div><!-- contents -->
- <!-- HTML footer for doxygen 1.8.13-->
- <!-- start footer part -->
- <hr class="footer"/>
- <address class="footer">
- <small>
- Generated by  <a href="http://www.doxygen.org/index.html">doxygen</a> 1.8.15
- </small>
- </address>
- </body>
- </html>
|
