te</span> &lt;<span class="keyword">typename</span> ChannelValue, <span class="keyword">typename</span> Layout&gt;
<a name="l00194"></a>00194 <span class="keyword">struct </span>channel_mapping_type&lt;pixel&lt;ChannelValue,Layout&gt; &gt; {
<a name="l00195"></a>00195     <span class="keyword">typedef</span> <span class="keyword">typename</span> Layout::channel_mapping_t type;
<a name="l00196"></a>00196 }; 
<a name="l00197"></a>00197 
<a name="l00198"></a>00198 <span class="keyword">template</span> &lt;<spa