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Submitted by WVL on 6 August 2009
LZWVL is a sequence based command-line packer/cruncher that has a little bit worse compression compared to normal crunchers like Byteboozer or Pucrunch, but has a much faster depack.
LZWVL has 2 modes, a fast and a slow mode. The slow mode is only a little bit slower, but has a little bit better compression.
For geek's sake, I made a comparison using 9 different files from the Pearls for Pigs demo. All the 9 bins are compressed with my rle-packer, lzwvl in fast mode, lzwvl in slow mode, byteboozer and pucrunch in data mode.
Here's a graph showing the resulting compression vs # frames it takes to depack :
As you can see I was too lazy to measure how much time Pucrunch took to decrunch, but I'm betting it would be slower than Byteboozer any day ;)
Here's some more hard data :
filesizes
file bin rle lzwvl-f lzwvl-s bb pu doynax
1 11008 8020 4529 4151 3383 3410 3265
2 4973 4314 3532 3309 2648 2687 2512
3 3949 3498 2991 2617 2187 2226 2108
4 7016 6456 4242 4085 3681 3595 3617
5 34760 27647 25781 24895 21306 20887 20405
6 31605 12511 11283 10923 9194 8877 8904
7 20392 17295 12108 11285 9627 9460 9289
8 5713 5407 4179 3916 3251 3314 3132
9 8960 7986 6914 6896 5586 5651 5430
filesize in %
1 100% 73% 41% 38% 31% 31% 30%
2 100% 87% 71% 67% 53% 54% 51%
3 100% 89% 76% 66% 55% 56% 53%
4 100% 92% 60% 58% 52% 51% 52%
5 100% 80% 74% 72% 61% 60% 59%
6 100% 40% 36% 35% 29% 28% 28%
7 100% 85% 59% 55% 47% 46% 46%
8 100% 95% 73% 69% 57% 58% 55%
9 100% 89% 77% 77% 62% 63% 61%
#frames to depack
1 11 13 14 58 27
2 5 7 7 38 17
3 4 6 6 28 12
4 8 9 9 43 20
5 36 39 42 300 119
6 20 25 25 126 49
7 22 25 26 138 60
8 6 8 8 43 18
9 9 12 12 73 32
Note : the depacker detects by itself if the file is in slow or fast mode and is in 64tass format. It also uses an illegal opcode, so you might need to replace that one (lax (zp),y). |
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