Hi all,
I was recently trying to update my game to store graphics in compressed formats (JPEG and PNG).
Whilst I ended up settling on a different library, my initial attempt was to incorporate ijg 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.
Here is my code, which is linked to the jpeg.lib that is part of the ijg packages:
#include "stdafx.h"
#include <stdio.h>
#include <assert.h>
#include <jpeglib.h>
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(&jerr);
//initialize the decompression
jpeg_create_decompress(&cinfo);
FILE* infile;
errno_t err = fopen_s(&infile, "..\\Sample.jpg", "rb");
assert(err == 0);
//specify the input
jpeg_stdio_src(&cinfo, infile);
//read headers
(void) jpeg_read_header(&cinfo, TRUE);
return 0;
}
The problem is that the call to jpeg_read_header()
fails with an access violation:
Unhandled exception at 0x7c91b1fa (ntdll.dll) in JPEGTest.exe: 0xC0000005: Access violation writing location 0x00000010.
Does anyone have any ideas what I might be doing wrong?