ceph/src/boost/libs/gil/doc/html/g_i_l_0016.html

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  41 <h1>channel_algorithm.hpp File Reference</h1><hr><a name="_details"></a><h2>Detailed Description</h2>
  42 Channel algorithms.
  43 <p>
  44 <dl class="author" compact><dt><b>Author:</b></dt><dd>Lubomir Bourdev and Hailin Jin <br>
  45  Adobe Systems Incorporated </dd></dl>
  46 <dl class="date" compact><dt><b>Date:</b></dt><dd>2005-2007 <br>
  47  Last updated on May 6, 2007</dd></dl>
  48 Definitions of standard GIL 8-bit, 16-bit, 32-bit channels
  49 <p>
  50 <code>#include &quot;<a class="el" href="g_i_l_0093.html">gil_config.hpp</a>&quot;</code><br>
  51 <code>#include &quot;<a class="el" href="g_i_l_0014.html">channel.hpp</a>&quot;</code><br>
  52 <code>#include &lt;boost/mpl/less.hpp&gt;</code><br>
  53 <code>#include &lt;boost/mpl/integral_c.hpp&gt;</code><br>
  54 <code>#include &lt;boost/mpl/greater.hpp&gt;</code><br>
  55 <code>#include &lt;boost/type_traits.hpp&gt;</code><br>
  56
  57 <p>
  58 <a href="g_i_l_0015.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
  59 <tr><td></td></tr>
  60 <tr><td colspan="2"><br><h2>Namespaces</h2></td></tr>
  61 <tr><td class="memItemLeft" nowrap align="right" valign="top">namespace &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="namespaceboost.html">boost</a></td></tr>
  62
  63 <tr><td class="memItemLeft" nowrap align="right" valign="top">namespace &nbsp;</td><td class="memItemRight" valign="bottom"><b>boost::gil</b></td></tr>
  64
  65 <tr><td class="memItemLeft" nowrap align="right" valign="top">namespace &nbsp;</td><td class="memItemRight" valign="bottom"><b>boost::gil::detail</b></td></tr>
  66
  67 <tr><td colspan="2"><br><h2>Classes</h2></td></tr>
  68 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0410.html">channel_converter_unsigned&lt; T, T &gt;</a></td></tr>
  69
  70 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Converting a channel to itself - identity operation.  <a href="g_i_l_0410.html#_details">More...</a><br></td></tr>
  71 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0477.html">channel_converter_unsigned_impl</a></td></tr>
  72
  73 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This is the default implementation. Performance specializatons are provided.  <a href="g_i_l_0477.html#_details">More...</a><br></td></tr>
  74 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0414.html">channel_converter_unsigned&lt; bits32f, DstChannelV &gt;</a></td></tr>
  75
  76 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0412.html">channel_converter_unsigned&lt; bits32, bits32f &gt;</a></td></tr>
  77
  78 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">32 bit &lt;-&gt; float channel conversion  <a href="g_i_l_0412.html#_details">More...</a><br></td></tr>
  79 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0416.html">channel_converter_unsigned&lt; bits32f, bits32 &gt;</a></td></tr>
  80
  81 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">32 bit &lt;-&gt; float channel conversion  <a href="g_i_l_0416.html#_details">More...</a><br></td></tr>
  82 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0408.html">channel_converter</a></td></tr>
  83
  84 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A unary function object converting between channel types.  <a href="g_i_l_0408.html#_details">More...</a><br></td></tr>
  85 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0450.html">default_channel_converter</a></td></tr>
  86
  87 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Same as <a class="el" href="g_i_l_0408.html" title="A unary function object converting between channel types.">channel_converter</a>, except it takes the destination channel by reference, which allows us to move the templates from the class level to the method level. This is important when invoking it on heterogeneous pixels.  <a href="g_i_l_0450.html#_details">More...</a><br></td></tr>
  88 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0422.html">channel_multiplier_unsigned</a></td></tr>
  89
  90 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This is the default implementation. Performance specializatons are provided.  <a href="g_i_l_0422.html#_details">More...</a><br></td></tr>
  91 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0428.html">channel_multiplier_unsigned&lt; bits8 &gt;</a></td></tr>
  92
  93 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Specialization of channel_multiply for 8-bit unsigned channels.  <a href="g_i_l_0428.html#_details">More...</a><br></td></tr>
  94 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0424.html">channel_multiplier_unsigned&lt; bits16 &gt;</a></td></tr>
  95
  96 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Specialization of channel_multiply for 16-bit unsigned channels.  <a href="g_i_l_0424.html#_details">More...</a><br></td></tr>
  97 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0426.html">channel_multiplier_unsigned&lt; bits32f &gt;</a></td></tr>
  98
  99 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Specialization of channel_multiply for float 0..1 channels.  <a href="g_i_l_0426.html#_details">More...</a><br></td></tr>
 100 <tr><td class="memItemLeft" nowrap align="right" valign="top">struct &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="g_i_l_0420.html">channel_multiplier</a></td></tr>
 101
 102 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A function object to multiply two channels. result = a * b / max_value.  <a href="g_i_l_0420.html#_details">More...</a><br></td></tr>
 103 <tr><td colspan="2"><br><h2>Functions</h2></td></tr>
 104 <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="gf04e6ac30a35a1f68a8bb84730e34786"></a><!-- doxytag: member="channel_algorithm.hpp::channel_convert" ref="gf04e6ac30a35a1f68a8bb84730e34786" args="(SrcChannel src)" -->
 105 template&lt;typename DstChannel, typename SrcChannel&gt; </td></tr>
 106 <tr><td class="memTemplItemLeft" nowrap align="right" valign="top">channel_traits&lt; DstChannel &gt;<br>
 107 ::value_type&nbsp;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="g_i_l_0099.html#gf04e6ac30a35a1f68a8bb84730e34786">channel_convert</a> (SrcChannel src)</td></tr>
 108
 109 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Converting from one channel type to another. <br></td></tr>
 110 <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="36fdfb4869446c1151d0850faf72e3b3"></a><!-- doxytag: member="channel_algorithm.hpp::div255" ref="36fdfb4869446c1151d0850faf72e3b3" args="(uint32_t in)" -->
 111 uint32_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>div255</b> (uint32_t in)</td></tr>
 112
 113 <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="114bcacf9a7cce97638fe8704d44559f"></a><!-- doxytag: member="channel_algorithm.hpp::div32768" ref="114bcacf9a7cce97638fe8704d44559f" args="(uint32_t in)" -->
 114 uint32_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>div32768</b> (uint32_t in)</td></tr>
 115
 116 <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="gf73b2a47a7877767534df0eee46dda17"></a><!-- doxytag: member="channel_algorithm.hpp::channel_multiply" ref="gf73b2a47a7877767534df0eee46dda17" args="(Channel a, Channel b)" -->
 117 template&lt;typename Channel&gt; </td></tr>
 118 <tr><td class="memTemplItemLeft" nowrap align="right" valign="top">channel_traits&lt; Channel &gt;<br>
 119 ::value_type&nbsp;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="g_i_l_0103.html#gf73b2a47a7877767534df0eee46dda17">channel_multiply</a> (Channel a, Channel b)</td></tr>
 120
 121 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A function multiplying two channels. result = a * b / max_value. <br></td></tr>
 122 <tr><td class="memTemplParams" nowrap colspan="2"><a class="anchor" name="ge2e0267865f89610ef26148874a04bb5"></a><!-- doxytag: member="channel_algorithm.hpp::channel_invert" ref="ge2e0267865f89610ef26148874a04bb5" args="(Channel x)" -->
 123 template&lt;typename Channel&gt; </td></tr>
 124 <tr><td class="memTemplItemLeft" nowrap align="right" valign="top">channel_traits&lt; Channel &gt;<br>
 125 ::value_type&nbsp;</td><td class="memTemplItemRight" valign="bottom"><a class="el" href="g_i_l_0101.html#ge2e0267865f89610ef26148874a04bb5">channel_invert</a> (Channel x)</td></tr>
 126
 127 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default implementation. Provide overloads for performance. <br></td></tr>
 128 </table>
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