diff --git a/about.txt b/about.txt deleted file mode 100644 index a3d719d..0000000 --- a/about.txt +++ /dev/null @@ -1,7 +0,0 @@ -Refpack/QFS is a compression algorithm based on the LZ77/LZSS compression by Frank Barchard from EA. It first appeared in Need for Speed 2 in 1997. There is slight variations in the compression for each game. - -The main destinction between QFS and LZSS is that the compression has it's own unique way of encoding tokens/control characters, which has a varying length between 8 to 32 bits. It also allows a much longer length and offset to be encoded. - -The algorithm doesn't employ any other common compression method (such as Huffman Coding) besides LZSS encoding of repeated patterns. - -The longer length and offset capacity of the compression slows down the compression, and it doesn't seem to yield a significant improvement in the compressed size, so I don't know why EA didn't just use DEFLATE. I guess they waited until the patent for DEFLATE expired.