I32 Image Format
Chad Austin
7.19.98


---- 256 byte header ----

byte  signature[4];  // Must be ".i32"
byte  version;       // Must be 1
dword image_width;
dword image_height;
byte  compression;   // 0 = no compression, 1 = Huffman
byte  reserved[242];


---- Image data ----

This is just a top-down bitmap.  Each pixel is in RGBA format.  Therefore,
the total image size is image_width*image_height*4.  The total file size is
256+image_height*image_width*4.

If compression is 1, the image data is compressed with the Huffman algorithm
before being written to the file.  See huffman.txt.
