Sound File Overview

NW > Sound File Overview

This page describes some general data structures seen in a BFSAR file and its subfiles. Each sound file is divided into one or more blocks, which are all aligned to 32 bytes.

File Header

The header is padded with null bytes until it contains a multiple of 32 bytes.

Offset	Size	Description
0x0	4	Magic number
0x4	2	Endianness (0xFEFF=Big, 0xFFFE=Little)
0x6	2	Header size, including block references
0x8	4	Version number
0xC	4	Filesize
0x10	2	Number of blocks
0x12	2	Padding
0x14		Block references

Block Reference

Blocks are looked up by id, so their order doesn't matter.

Offset	Size	Description
0x0	2	Type id
0x2	2	Padding
0x4	4	Offset, relative to start of file
0x8	4	Size

Section Reference

If a section is not present, the type id is set to 0 and the offset is set to -1.

Offset	Size	Description
0x0	2	Type id
0x2	2	Padding
0x4	4	Offset, relative to start of section or block

Item ID

Files are often referenced by 'item id'. An item id consists of both file type and file index. The file index is an index into the reference table of the corresponding file type in the INFO block of the BFSAR file.

Offset	Size	Description
0x0	1	File type
0x1	3	File index

File type	Description
1	Sound (SE/WSD/STRM)
2	Sound group (WSDSET/SEQSET)
3	Bank (BANK)
4	Player (PLAYER)
5	Wave archive (WAR)
6	Group (GROUP)

Wave ID Table

This table contains references to individual wave files.

Offset	Size	Description
0x0	4	Number of entries
0x4		Wave file ids

Wave File ID

Offset	Size	Description
0x0	4	Item id of wave archive
0x4	4	Wave file index

ADSHR Curve

Offset	Size	Description
0x0	1	Attack
0x1	1	Decay
0x2	1	Sustain
0x3	1	Hold
0x4	1	Release