1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<html> 3 4<head> 5<META http-equiv="Content-Type" content="text/html; charset=windows-1252"> 6<META name="GENERATOR" content="IBM WebSphere Studio Homepage Builder Version 7.0.0.0 for Windows"> 7<META http-equiv="Content-Style-Type" content="text/css"> 8<title>MI_UnpackBits</title> 9<LINK rel="stylesheet" href="../../css/nitro.css" type="text/css"> 10</head> 11 12<body> 13 14<h1 align="left">MI_UnpackBits <IMG src="../../image/NTR.gif" align="middle"><IMG src="../../image/TWL.gif" align="middle"></h1> 15<h2>Syntax</h2> 16 17<dl> 18 <dd> 19<CODE>#include <nitro/mi.h></CODE><BR> 20 <BR> 21 <CODE>void MI_UnpackBits( const void* srcp, void* destp, MIUnpackBitsParam *paramp 22 );</CODE><br> 23 </dd> 24</dl> 25<h2>Arguments</h2> 26<TABLE border="1" width="100%"> 27 <TBODY> 28 <TR> 29 <TD width="13%"><EM><STRONG>srcp</STRONG></EM></TD> 30 <TD width="87%">Source address where compressed data is stored.</TD> 31 </TR> 32 <TR> 33 <TD width="13%"><EM><STRONG>destp</STRONG></EM></TD> 34 <TD width="87%">Destination address for decompression.</TD> 35 </TR> 36 <TR> 37 <TD><EM><STRONG>paramp</STRONG></EM></TD> 38 <TD><CODE>MIUnpackBitsParam</CODE> structure address.</TD> 39 </TR> 40 </TBODY> 41</TABLE> 42 43<h2>Return Values</h2> 44<p>None.</p> 45 46<H2>Description</H2> 47<P>This function decompresses data that was packed as 0 fixed bits. The destination address must be aligned to a 4-byte boundary.<BR> The <code>MI_UnpackBitsParam</code> structure comprises the following. Source data byte count <code>(u16)</code>.<br> Bit count for the "1" source data <code>(u16:8)</code>.<br> Bit count for the "1" destination data <code>(u16:8)</code>.<br> The offset to be added to the source data <code>(u32:31)</code>.<br> A flag that indicates whether to add an offset to the "0" data <code>(u32:1)</code>.<br></P> 48<h2>Internal Operation</h2> 49<P>This processes with the CPU without using a system call or DMA.</P> 50 51<h2>See Also</h2> 52<p><code><a href="MI_UncompressLZ.html">MI_UncompressLZ</a>, <a href="MI_UncompressHuffman.html">MI_UncompressHuffman</a>, <a href="MI_UncompressRL.html">MI_UncompressRL</a>, <a href="../../svc/SVC_UnpackBits.html">SVC_UnpackBits</a></code> </p> 53 54<H2>Revision History</H2> 55<P><code>MI_UnpackBitsPram</code> is changed to <code>MIUnpackBitsParam</code>.<br> 2004/05/28 Fixed description in Internal Operation.<br> 2004/02/10 Initial version.</P> 56<hr><p>CONFIDENTIAL</p></body> 57</html> 58