LZSS/LZ77 decompressor?

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04-20-24 01:21 AM

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Main - ROM Hacking - LZSS/LZ77 decompressor?

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Treeki

Posted on 07-15-07 01:37 PM

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From: Rogueport

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Yeah, I need one. I want to hack the NSMB level format; possibly make an editor, but someone (Raccoon Sam?) told me they were LZ compressed, and I can't find any way to decompress them.
Some code I stole from EliteMap simply returns an empty array, UnLZGBA can't find them, and Tahaxan does not ask me if I want to decompress them when I extract, so they -may- not be LZ compressed. Before you link me here, already gone through that. Nothing of use.

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Celice

Posted on 07-15-07 04:57 PM

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Did you check www.romhacking.net? I know there's at least one LZ77 decompressor there that isn't graphics-dependent.

GuyPerfect

Posted on 07-15-07 07:06 PM

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I actually posted some self-made LZ77 codec routines in the B.O.B. thread earlier this week. You may have to modify it a bit to suit your needs, but it works and I'm pretty sure it's reasonably optimized.

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Treeki

Posted on 07-15-07 09:58 PM

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From: Rogueport

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Hmm.. I have tried one of the LZ decompressors I managed to find on romhacking.net - but it does not seem to work on the course files (it does however work on some graphics files I know are LZ compressed). So probably they are not LZ compressed. But what format? I can't seem to find anything useful in them. I will see if I can try and figure it out..

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Main - ROM Hacking - LZSS/LZ77 decompressor?

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