781729" title="The decoder context.">th_dec_ctx</a> handle. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>_op</em>&nbsp;</td><td>An <code>ogg_packet</code> containing encoded video data. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>_granpos</em>&nbsp;</td><td>Returns the granule position of the decoded packet. If non-<code>NULL</code>, the granule position for this specific packet is stored in this location. This is computed incrementally from previously decoded packets. Aft