"><a name="l00159"></a><span class="lineno">  159</span>&#160;    <span class="keywordtype">void</span> operator()(SrcPixel <span class="keyword">const</span>&amp; src, DstPixel&amp; dst)<span class="keyword"> const</span></div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;<span class="keyword">    </span>{</div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;        <span class="keyword">using</span> src_t = <span class="keyword">typename</span>