--- In gbadev@y..., "Sam Nova" <sam@n...> wrote:
> And Jeff... Does RNC require a license from Rob Norton :) ?

License?! We dunt need no stinkin' license... :P Yeah, for
commercial work I think a license is still required. The
licensing part is definitely a drawback.

Or you could use PuCrunch that I just finished porting to ARM.
You can get it here: http://www.devrs.com/gba/

Here are some limited tests I've done of low-resource lossless
compression packages. The official GBA compression tool was
included in these tests. I'll do some actual timing comparisons
once my GBA actually shows up:



Compression Tests v1.0302 by Jeff F. - http://www.devrs.com

NOTE: When looking at the following results keep in
mind that 10 bytes of PuCrunch, 17 bytes of RNC1,
18 bytes of RNC2, and 1 byte of C64Pack packed
data files contain unused header bytes that could
be stripped to increase compression.

TIMES ONLY APPLY FOR OLDER GB/GBC. NOT FOR GBA.
THEY ARE INCLUDED FOR RELATIVE PERFORMANCE INDICATION ONLY.

Method Decomp Time* Comp UIC
Size Size

hs1.til (4096 bytes)

PuCrunch - 0.525 - 2840 2612
JCALG1 - 2862
RNC method 1 - 1.120 - 2865 2691
RNC method 2 - 0.088 - 2938 2730
C64Pack - 0.193 - 3091 2837
AGBComp LZ77 - 3240
AGBComp Huff4 - 3292
AGBComp Huff8 - 3440
GB Comp v1.4 - 0.043 - 3470 3204
GB Comp v1.3 - 0.048 - 3486 3210

km1.til (4096 bytes)

RNC method 1 - 0.766 - 3125 3132
PuCrunch - 0.547 - 3128 3080
JCALG1 - - 3194
RNC method 2 - 0.072 - 3202 3193
C64Pack - 0.186 - 3246 3184
GB Comp v1.4 - 0.037 - 3441 3452
GB Comp v1.3 - 0.041 - 3441 3452
AGBComp Huff4 - 3452
AGBComp LZ77 - 3476
AGBComp Huff8 - 3660

font1.til (896 bytes)

JCALG1 - - 558
PuCrunch - 0.104 - 564 605
RNC method 1 - 0.230 - 567 635
RNC method 2 - 0.018 - 594 657 (v1.0 time 0.019)
C64Pack - 0.038 - 599 663
AGBComp LZ77 - - 656
GB Comp v1.4 - 0.011 - 701 786
GB Comp v1.3 - 0.011 - 705 787
AGBComp Huff4 - 732
AGBComp Huff8 - 780

AGBComp is official AGB compressor tool from Nintendo to
support the built-in decompression in BIOS rom.

JCALG1,RNC1,C64Pack, & GB Comp are not currently ported to GBA.
Only RNC1 & RNC2 require a license to use commercially.

JCALG1 - http://www.collakesoftware.com
RNC2 - http://www.devrs.com/gba/
C64Pack - http://www.devrs.com/gb/ (Link to package.)
GB Comp - http://www.devrs.com/gb/ (Link to Sam Nova's site.)
PUCrunch - http://www.devrs.com/gba/ (Link to package.)

All measurements in seconds on the GB in single-speed mode.

Only default compressor optimizations used.

hs1. til & km1.til are large dithered graphic tile sets
that were extracted from several games.
font1.til is a small dithered alphanumeric font set.

Comp Size = compressed size
UIC Size = undo interleave compressed size

UIC is where you separate the even from the odd bytes
and then join these two data sets end to end in a file.
The idea being that often UIC files compress better if
the original files contained colorful tiles. (UIC was
helpful for the original GB/GBC. It may or may not be
a useful technique for GBA dev.)

*EOF*