BFWAV File Format
Yannik Marchand edited this page May 5, 2023
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NW > Sound Files > Wave File (FWAV)
This file contains wave sound data. It is usually stored in a wave archive.
This page describes version 0x10100 and 0x10200 of the file format.
| Block id | Description |
|---|---|
0x7000 |
Info block |
0x7001 |
Data block |
| Offset | Size | Description |
|---|---|---|
| 0x0 | 4 | Identifier ("INFO") |
| 0x4 | 4 | Block size |
| 0x8 | 1 | Sample format |
| 0x9 | 1 | Is looped |
| 0xA | 2 | Padding |
| 0xC | 4 | Sample rate |
| 0x10 | 4 | Loop start sample |
| 0x14 | 4 | Number of samples |
| 0x18 | 4 | Version 0x10100: Reserved (always 0) Version 0x10200: Adjusted loop start sample (see below) |
| 0x1C | 4 | Number of channels (up to 2) |
| 0x20 | References to channel info (0x7100), relative to 'number of channels' field. |
The adjusted loop start sample is always less than the real loop start sample. If the adjusted loop start sample is X less than the real loop start sample, the last X samples of the wave file are skipped when the wave file is looped.
| Value | Description |
|---|---|
| 0 | 8-bit |
| 1 | 16-bit |
| 2 | ADPCM |
| Offset | Size | Description |
|---|---|---|
| 0x0 | 8 | Reference into data block (0x1F00) |
| 0x8 | 8 | Reference to DSP ADPCM info (0x0300) |
| 0x10 | 4 | Unused (always 0) |
| Offset | Size | Description |
|---|---|---|
| 0x0 | 16 * 2 | ADPCM coefficients |
| 0x20 | 6 | ADPCM context (main) |
| 0x26 | 6 | ADPCM context (loop) |
| 0x28 | 2 | Unused (always 0) |
| Offset | Size | Description |
|---|---|---|
| 0x0 | 2 | Initial header byte |
| 0x2 | 2 | Initial hist 1 |
| 0x4 | 2 | Initial hist 2 |
This block contains the actual sound data.
In version 0x10100, the sound data is aligned to 32 bytes. In version 0x10200, it is aligned to 64 bytes.
| Offset | Size | Description |
|---|---|---|
| 0x0 | 4 | Identifier ("DATA") |
| 0x4 | 4 | Block size |
| 0x8 | Sound data |