Electronic Arts LIB Game Archive
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| − | '''Electronic Arts LIB Game Archive''' is an archiving format used in some video games, add-ons and | + | '''Electronic Arts LIB Game Archive''' is an archiving format used in some video games, add-ons and toolkits released by Electronic Arts during the 1990s. |
== Identification == | == Identification == | ||
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| 1 || [[LZSS]]-style compression, probably [[LZSS_(Haruhiko_Okumura)|Okumura's LZSS]] | | 1 || [[LZSS]]-style compression, probably [[LZSS_(Haruhiko_Okumura)|Okumura's LZSS]] | ||
|- | |- | ||
| − | | 3 || Looks like | + | | 3 || Looks like a special mode for pictures (data starts with <code>PXPK</code>) |
|- | |- | ||
| 4 || [[PKWARE DCL Implode]] | | 4 || [[PKWARE DCL Implode]] | ||
|} | |} | ||
|- | |- | ||
| − | | 14 || 4 bytes || Absolute offset of the file data | + | | 14 || 4 bytes || Absolute offset of the file data in the archive |
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== Software == | == Software == | ||
| − | * https://aluigi.altervista.org/bms/ealib.bms - Script for [https://aluigi.altervista.org/quickbms.htm QuickBMS] that extracts and | + | * https://aluigi.altervista.org/bms/ealib.bms - Script for [https://aluigi.altervista.org/quickbms.htm QuickBMS] that extracts and, when possible, decompresses files from an EALIB archive |
* https://www.watto.org/extract - Watto's Game Extractor supports EALIB archives (although extraction might be buggy) | * https://www.watto.org/extract - Watto's Game Extractor supports EALIB archives (although extraction might be buggy) | ||
Latest revision as of 06:05, 27 November 2025
Electronic Arts LIB Game Archive is an archiving format used in some video games, add-ons and toolkits released by Electronic Arts during the 1990s.
Contents |
[edit] Identification
Archives begin with the ASCII string EALIB (hexadecimal 45 41 4c 49 42).
[edit] Format details
Byte order is little-endian. The count of file records in the archive follows the EALIB signature as a 2-byte integer. This count does not include the unnamed final record. Each record has a fixed length of 18 bytes.
[edit] File record
| Offset | Size | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 13 bytes | File name (up to 8+3 characters, plus dot), null-terminated and padded | ||||||||||
| 13 | 1 byte | Compression method
| ||||||||||
| 14 | 4 bytes | Absolute offset of the file data in the archive |
Records appear sorted by their offset fields in ascending order, so the size allocated to extract any file can be calculated from two consecutive records. A special record with an empty file name follows the last valid file. The offset field in this record should be the whole size of the archive.
When the compression method is 1 or 4, the uncompressed size immediately precedes the compressed stream as a 4-byte integer.
[edit] Software
- https://aluigi.altervista.org/bms/ealib.bms - Script for QuickBMS that extracts and, when possible, decompresses files from an EALIB archive
- https://www.watto.org/extract - Watto's Game Extractor supports EALIB archives (although extraction might be buggy)
[edit] Sample files
- DiscMaster search by format
- DiscMaster search by header - Previous search misses a few seemingly valid archives
- dexvert samples — archive/electronicArtsLibGameArchive
