Compress/Decompress LZS (The Quivering game)

[Pakolmo]

I have a lot of *.RCS with LZS compression

Aluigi, can you do a script to compress and decompress the RCS files?

https://www.dropbox.com/s/qgfw74v79atkn ... t.rcs?dl=0

[IDontKnowMuch]

I'm not Aluigi but here you go To recompress, run quickbms with the -r option

[Pakolmo]

Thanks, but I can decompress, but no compress...

[aluigi]

The correct decompression script is:

Code: Select all

    comtype lzs
    get ZSIZE asize
    xmath SIZE "ZSIZE * 10"
    get NAME basename
    clog NAME 0 ZSIZE SIZE

I don't know where is the rdesktop compression code, I see mppc_expand but not the compression.

[IDontKnowMuch]

Sorry I'm still pretty new to this, especially compression types. I was skeptical that the decompressed size was the same as the compressed size but it seemed to accept it

[chrrox]

this page?
https://github.com/FreeRDP/FreeRDP/blob ... dec/mppc.c
int mppc_compress(MPPC_CONTEXT* mppc, BYTE* pSrcData, UINT32 SrcSize, BYTE** ppDstData,
UINT32* pDstSize, UINT32* pFlags)

[aluigi]

Good but not so easy.

The compressed data doesn't work, it's something related to the history size probably but no solution yet.

[aluigi]

I confirm, it's not 100% compatible.