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_+Compression Methods+_ V 1.04

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Submitted on: 8/12/2002 6:24:26 AM
By: Marco v/d Berg 
Level: Intermediate
User Rating: By 37 Users
Compatibility:VB 6.0

Users have accessed this code 8394 times.
 
 
     I've got a lot of questions about if there was an update on packers collection, well, here it is. I have updated most of the compressors to handle filesizes over 64K. improved a lot lot of speed isseus. added some new compressors. great speed update on some coders (mostly BWT). I've got a uge amount of mail from people who liked the first version of my programm and also people who sended me some tips to speed up some methods. so I can't take all the credits for this update. I hope you all like this update as much as the first version and if you want to vote for it, please do so, couse with the first version something went wrong with the server and the actual winners of the coding contest didn't get the recognation they deserved.
 
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Other User Comments
8/12/2002 7:12:07 AM:John Galanopoulos
Another excellent submission from 
another excellent coder. Thank you for 
sharing this valuable source with us. 5 
from me (the least i could do). Keep 
feeding the community.
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8/13/2002 1:35:08 AM:Gary Staunton
Totally cool and interesting to see the 
difference of compression ratio.  I 
personally found that it's too much for 
me to rate on all the code, othwise I 
wouldn't get a chance until next week, 
so I'll rate on what I've seen and 
that's 5gs. - Excellent.
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8/13/2002 3:12:56 AM:Almar Joling
I'd want to vote.. but right now the 
'authorization' image does not show 
up.. I'll be back =-)
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8/13/2002 4:03:21 AM:Mumtaz H Janjua
It is cool, I would love to come 10 
time to vote this if it could add 
value.
Nice to have good people on 
forum
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8/13/2002 6:56:39 AM:Andrew
Wow! This is the very nice code. I have 
been wanting to know how compression 
worked for years. Thank you for 
sharing. 5 globes from me.
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8/14/2002 4:34:42 AM:John Priestley
Will you be writing LZX compression? 
LZX was one of the best Lh archivers on 
the Amiga. I believe M$ "aquired" the 
algolrythm and are using it in 
CABs.
I think the idea behind LZX 
was to group files together, scan them 
all to create the dictionary for 
compression which created smaller 
compressed files.
Excellent 
program though, 5 from me.
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8/18/2002 10:03:16 AM:gonchuki_
no votes this time... i expected more 
for a new version, not just 2 new 
compressors and little corrections to 
others.... in fact, the problem with 
the Arithmetic Bitwise compressor with 
rescale is still there. the problem is 
that it "compress" ok, but when i try 
to decompress i notice there was no 
such compression... i get corrupted 
data not the original one... pls, i 
like this compressor a lot because is 
fast and effective, but i can't use it 
if it corrupts my data!
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8/20/2002 4:44:25 AM:Josh Yu
Very interesting application. Can you 
do 3DES too?
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9/3/2002 10:55:20 PM:
does your VBC algorithm got any 
refrencess, what does VBC stand's 
for..?
and how do you write your vbc 
algorithm
example :
1. Determine 
which group the value is, eg: if value 
= 3 then flag = 1, value bit length = 
3
2. Store the flag value, it is 
always 3 bits long
3. Subtract / minus 
the value by Start value
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9/19/2002 5:34:11 AM:Ozan Yasin Dogan
Excellent code, the best compression 
code i saw in PSC. Thank you for 
your
effort and sharing to us. 5
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3/16/2003 9:21:37 PM:
50 globes from me keep up the good 
work...
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3/31/2003 6:07:05 PM:shafqat raza
heloo sir 
i have mailed u many times 
before this but there is no answer...(i 
really don't know why?) but sir i 
really want help notes or any other 
help material for packers .bcz i am 
working on compression and i espacialy 
need some new compressor's logic 
theory.if u do this for me i will be 
very thankfull to u..
raza 
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