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Originally Posted by FizMan
Turns out this entire time Aalfabob has been compressing files with the same sequence of information repeated over and over again 
j/k So are you consistently compressing files to around 508-515 bytes despite major ranges in their uncompressed format? A 5 meg file would compress to 514 bytes and a 500kb file would also compress to say, 510b? I find that very fascinating... |
Yep. the only thing that changes when changing the files size is how many times it needs to be ran through the compressor to get the same results as say a file half its size. To keep track of this, 2 bytes are put as the main header of the file to keep track of how many times its been compressed (Up to 65535 times).
The last time I ran it on a 1 meg file, it had taken around 818 runs to get down to the 515 Bytes, but most of these runs were spent between 2500 bytes and 515 bytes due to only gaining 1 - 10 bytes per try. I made some graphs from the logs put out by that program. If i can get my friend to give me some space again on his server i can post them.
Right now I'm reprogramming the compression portion of the program because the last one was pretty slow from the way i was reading from the file. The new one pretty much just has to run a couple of if then statements and change a byte. Hopefully it will beat the common compressors today in speed also but ill have to see how well i can get it programmed. This next way should also be able to chop of around 2% - 5% of the file every pass.
edit - Ill just put up the graphs here to give you an idea what im talking about. Also, the second chart actually loses some compression some times but the next pass ussually gains it back.