mat</code> - the pixel format (one of <code>PF_*</code>)</dd>
<dt><span class="strong">Returns:</span></dt><dd>the blue offset for the given pixel format.</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>java.lang.Exception</code></dd></dl>
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<h4>bufSize</h4>
<pre>public static&nbsp;int&nbsp;bufSize(int&nbsp;width,
          int&nbsp;height,
          int&nbsp;jpegSubsamp)
                   