JPEG support with ijg - getting access violation

Question

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

Answer 1

here is a tested function

void test(char FileName[])
{
    unsigned long x, y;
    struct jpeg_decompress_struct info; //for our jpeg info
    struct jpeg_error_mgr err;           //the error handler
    JSAMPARRAY buffer;
    FILE* infile;
    //initialize error handling
    info.err = jpeg_std_error(& err);     

    infile = fopen(FileName, "rb");  //open the file

    //if the jpeg file doesn't load
    if(!infile) {
    fprintf(stderr, "Error reading JPEG file %s!", FileName);
        // printf("Error reading JPEG file %s!", FileName);
        //return 0;
    }

    //initialize the decompression
    jpeg_create_decompress(&info);


    //specify the input
    jpeg_stdio_src(&info, infile);    

    //read headers
    jpeg_read_header(&info, TRUE);   // read jpeg file header

    jpeg_start_decompress(&info);    // decompress the file

    //set width and height
    x = info.output_width;
    y = info.output_height;

    printf("x value is %ul", x);
    printf("x value is %ul", y);
}