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7<title>GetMpRegionsToBuildJpegData</title>
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10<h1><CODE>nn::jpeg::CTR::JpegMpEncoder::GetMpRegionsToBuildJpegData</CODE> Member Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">#include &lt;nn/jpeg.h&gt;
14bool GetMpRegionsToBuildJpegData(
15     <a href="../../../../nn/jpeg/CTR/MpRegionsToBuildJpegData/Overview.html">MpRegionsToBuildJpegData</a> * pBuffer
16);
17</pre>
18    </div>
19<h2>Arguments</h2>
20    <div class="section">
21      <table class="arguments">
22        <thead>
23          <tr>
24            <td width="15" />
25<th>Name</th>
26<td>Description</td>
27          </tr>
28        </thead>
29        <tr>
30<td>out</td>
31<th>pBuffer</th>
32<td>Buffer storing memory region information.</td>
33        </tr> </table>
34    </div>
35<h2>Return Values</h2>
36<div class="section">Returns <CODE>true</CODE> on success. Returns <CODE>false</CODE> on failure.<br />Could not get the reason for failure. This function does not update the value returned by <a href="../../../../nn/jpeg/CTR/JpegMpEncoder/GetLastError.html"><CODE>GetLastError</CODE></a>. </div>
37<h2>Description</h2>
38    <div class="section">
39<p>Gets the memory region information for reconstructing JPEG data from the encoding results of the most recent call to the <CODE><a href="../../../../nn/jpeg/CTR/JpegMpEncoder/StartMpEncoderFirst.html">StartMpEncoderFirst</a></CODE>, <CODE><a href="../../../../nn/jpeg/CTR/JpegMpEncoder/StartMpEncoderNext.html">StartMpEncoderNext</a></CODE>, or <CODE><a href="../../../../nn/jpeg/CTR/JpegMpEncoder/StartMpEncoderLR.html">StartMpEncoderLR</a></CODE> function.</p><p>If that processing fails, this function also fails. This function also fails if the <CODE><a href="../../../../nn/jpeg/CTR/JpegMpEncoder/StartJpegEncoder.html">StartJpegEncoder</a></CODE> function was called immediately previously. This function also fails right after encoding an image for display using the <a href="../../../../nn/jpeg/CTR/JpegMpEncoder/StartMpEncoderNext.html"><CODE>StartMpEncoderNext</CODE></a> function. Encoding results are needed to reconstruct the JPEG data, so do not destroy the encoded data.</p><p>Instead of JPEG-encoding the same image twice, once in MP format and once not, use this function to take the MP-encoded results and get the plain JPEG-encoded results at high speed.</p><p>Simply put, individual image data in MP format has this structure: [(JPEG header) + (APP2) + (JPEG data)], where APP2 includes the information associated with MP format. If we leave out the APP2, we have [(JPEG header) + (JPEG data)], which is identical to JPEG encoding results that are not MP format. This function gets pointers and byte sizes for the (JPEG header) and (JPEG data) memory regions.</p><p>If <a href="../../../../nn/jpeg/CTR/JpegMpEncoder/StartMpEncoderLR.html"><CODE>StartMpEncoderLR</CODE></a> was the function called immediately previously, this function is only able to get the memory region information for the left-eye image.</p><!-- write here --></div>
40<h2>Revision History</h2>
41    <div class="section">
42      <dl class="history">
43        <dt>2010/06/14</dt>
44<dd>Initial version.<br />
45        </dd>
46      </dl>
47    </div>
48  <hr><p>CONFIDENTIAL</p></body>
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50