GFCP: Difference between revisions
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Meleemeister (talk | contribs) Created page with "'''GFCP''' is a container for compression. ==File Format== ===Header=== {| class="wikitable" border="1" ! Offset !! Size !! Type !! Description |- | 0x00 || 4 || char[4]..." |
Meleemeister (talk | contribs) |
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| 0x10 || 4 || uint32 || Compressed data size | | 0x10 || 4 || uint32 || Compressed data size | ||
|} | |} | ||
The remaining data is the compressed data. It should have the same size as stated in the ''Compressed data size'' field of the header. | |||
===Algorithms=== | ===Algorithms=== | ||
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| 1 || byte pair encoding | | 1 || byte pair encoding | ||
|- | |- | ||
| 2 || | | 2 || LZ77 | ||
|- | |||
| 3 || [https://wiibrew.org/wiki/LZ77 LZ77] Version 0x10 but without header | |||
|} | |} | ||
Latest revision as of 08:49, 28 September 2021
GFCP is a container for compression.
File Format
Header
| Offset | Size | Type | Description |
|---|---|---|---|
| 0x00 | 4 | char[4] | Magic Word 'GFCP' |
| 0x04 | 4 | uint32 | Always 1 |
| 0x08 | 4 | uint32 | Compression type/algorithm which was used to compress the data |
| 0x0C | 4 | uint32 | Raw/Uncompressed data size |
| 0x10 | 4 | uint32 | Compressed data size |
The remaining data is the compressed data. It should have the same size as stated in the Compressed data size field of the header.
Algorithms
| ID | Algorithm |
|---|---|
| 1 | byte pair encoding |
| 2 | LZ77 |
| 3 | LZ77 Version 0x10 but without header |