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7<title>GetMpIndex</title>
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10<h1><CODE>nn::jpeg::CTR::JpegMpDecoder::GetMpIndex</CODE> Member Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">#include &lt;nn/jpeg.h&gt;
14
15bool GetMpIndex(
16     <a href="../../../../nn/jpeg/CTR/MpIndex/Overview.html">MpIndex</a> * pIndex,
17     const u8 * src,
18     size_t srcSize
19);
20</pre>
21    </div>
22<h2>Arguments</h2>
23    <div class="section">
24      <table class="arguments">
25        <thead>
26          <tr>
27            <td width="15" />
28<th>Name</th>
29<td>Description</td>
30          </tr>
31        </thead>
32        <tr>
33<td>out</td>
34<th>pIndex</th>
35<td>Specifies the buffer storing the MP Index IFD.<br />The stored data has been converted to a format that is easier for the library to process, and thus the binary representation of a stored MP Index IFD differs from that of the original data.</td>
36        </tr>
37        <tr>
38<td>in</td>
39<th>src</th>
40<td>Specifies the start of the MP-format data.<br />The MP Index IFD only exists in the starting image, so specify the starting image here.</td>
41        </tr>
42        <tr>
43<td>in</td>
44<th>srcSize</th>
45<td>Specifies the size of <SPAN class="argument">src</SPAN> in bytes.</td>
46        </tr> </table>
47    </div>
48<h2>Return Values</h2>
49<div class="section">Returns <CODE>true</CODE> on success. Returns <CODE>false</CODE> on failure.<br />Use the <CODE><a href="../../../../nn/jpeg/CTR/JpegMpEncoder/GetLastError.html">GetLastError</a></CODE> function to get the reason for failure. </div>
50<h2>Description</h2>
51    <div class="section">
52<p>Gets the MP Index IFD included in the data stored in MP format.</p><p>Obtained MP index IFDs (image file directories) are accessed using functions such as <CODE><a href="../../../../nn/jpeg/CTR/JpegMpDecoder/GetMpEntry.html">GetMpEntry</a></CODE> or <CODE><a href="../../../../nn/jpeg/CTR/JpegMpDecoder/GetMpAttribute.html">GetMpAttribute</a></CODE>. The region specified by the src and srcSize arguments must not be destroyed until the obtained MP index IFDs are no longer needed.</p><p>This function only partially performs decoding and shared processing. Consequently, there are some functions you cannot call immediately after calling this function: the <CODE><a href="../../../../nn/jpeg/CTR/JpegMpDecoder/GetLastWidth.html">GetLastWidth</a></CODE>, <CODE><a href="../../../../nn/jpeg/CTR/JpegMpDecoder/GetLastHeight.html">GetLastHeight</a></CODE>, <CODE><a href="../../../../nn/jpeg/CTR/JpegMpDecoder/GetLastOutputBufferWidth.html">GetLastOutputBufferWidth</a></CODE>, and <CODE><a href="../../../../nn/jpeg/CTR/JpegMpDecoder/GetLastOutputBufferHeight.html">GetLastOutputBufferHeight</a></CODE> functions, and all functions that get EXIF information, such as the <CODE><a href="../../../../nn/jpeg/CTR/JpegMpDecoder/GetLastDateTime.html">GetLastDateTime</a></CODE> function. Calls to these functions will have undefined return values.</p><!-- write here --></div>
53<h2>Revision History</h2>
54    <div class="section">
55      <dl class="history">
56        <dt>2010/10/22</dt>
57<dd>Corrected an error.<br />
58        </dd>
59        <dt>2010/06/14</dt>
60<dd>Initial version.<br />
61        </dd>
62      </dl>
63    </div>
64  <hr><p>CONFIDENTIAL</p></body>
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