y default, post-processing is disabled.</p>
<p>Sets the level of post-processing to use when decoding the compressed stream. This must be a value between zero (off) and the maximum returned by TH_DECCTL_GET_PPLEVEL_MAX.</p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"><tt>[in]</tt>&nbsp;</td><td valign="top"><em>_buf</em>&nbsp;</td><td>int: The new post-processing level. 0 to disable; larger values use more CPU. </td></tr>
  </table>
  </d