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POJPEG support with ijg - getting access violation
 

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    <p>I was recently trying to update <a href="http://kentb.blogspot.com/2008/12/kentis.html" rel="nofollow noreferrer">my game</a> to store graphics in compressed formats (JPEG and PNG).</p> <p>Whilst I ended up settling on a different library, my initial attempt was to incorporate <a href="http://www.ijg.org/" rel="nofollow noreferrer">ijg</a> to do JPEG decompression. However, I was unable to get even the simplest console application to work and am wondering if anyone might be able to shed some light on the reasons why.</p> <p>Here is my code, which is linked to the <em>jpeg.lib</em> that is part of the ijg packages:</p> <pre><code>#include "stdafx.h" #include &lt;stdio.h&gt; #include &lt;assert.h&gt; #include &lt;jpeglib.h&gt; int _tmain(int argc, _TCHAR* argv[]) { struct jpeg_decompress_struct cinfo; struct jpeg_error_mgr jerr; JSAMPARRAY buffer; int row_stride; //initialize error handling cinfo.err = jpeg_std_error(&amp;jerr); //initialize the decompression jpeg_create_decompress(&amp;cinfo); FILE* infile; errno_t err = fopen_s(&amp;infile, "..\\Sample.jpg", "rb"); assert(err == 0); //specify the input jpeg_stdio_src(&amp;cinfo, infile); //read headers (void) jpeg_read_header(&amp;cinfo, TRUE); return 0; } </code></pre> <p>The problem is that the call to <code>jpeg_read_header()</code> fails with an access violation:</p> <blockquote> <p>Unhandled exception at 0x7c91b1fa (ntdll.dll) in JPEGTest.exe: 0xC0000005: Access violation writing location 0x00000010.</p> </blockquote> <p>Does anyone have any ideas what I might be doing wrong?</p>
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    1. CO1 question -- why do you intialize error handling twice?
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    2. COMy bad - will update my post.
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