Difference between revisions of "BRASD (File Format)"
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| 0x04 || UInt16 || {{BOM}} | | 0x04 || UInt16 || {{BOM}} | ||
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| − | | 0x06 || UInt16 || '''Version number''' of the file format. Always 01 00. | + | | 0x06 || UInt16 || '''Version number''' of the file format. Always 01 00 in MKW. |
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| 0x08 || UInt32 || Length of the file in bytes. | | 0x08 || UInt32 || Length of the file in bytes. | ||
Revision as of 15:02, 25 February 2017
A BRASD file (Binary Revolution Animation Sound Data) contains information related to how certain objects produce sound based on their CHR0 animation. In Mario Kart Wii, they always appear in a ./brasd/ subdirectory from a course.
File Format
File Header
This is the structure for the BRASD header.
| Offset | Type | Description |
|---|---|---|
| 0x00 | String | File magic. Always RASD in ASCII. |
| 0x04 | UInt16 | Byte order mark (BOM): The value is always 0xFEFF. If value 0xFFFE is read, then the false endian is used. Mario Kart Wii uses nearly always big endian (bytes 0xFE,0xFF). |
| 0x06 | UInt16 | Version number of the file format. Always 01 00 in MKW. |
| 0x08 | UInt32 | Length of the file in bytes. |
| 0x0C | UInt16 | Offset to the first section. |
| 0x0E | UInt16 | Number of sections. Always 00 01. |
| 0x10 | UInt32 | Offset to the DATA section. Always 0x20. |
| 0x14 | UInt32 | Length of the DATA section. |
| 0x18 | End of this file header | |
DATA
The DATA section starts with a section header.
| Offset | Type | Description |
|---|---|---|
| 0x00 | String | Section magic. Always DATA in ASCII. |
| 0x04 | UInt32 | Length of this section. |
Event Header
After the DATA header comes the event header.
| Offset | Type | Description |
|---|---|---|
| 0x00 | UInt32 | Number of frames in corresponding animation. |
| 0x04 | UInt32 | Unknown. Always 01 00 00 00. |
| 0x18 | UInt32 | Unknown. Always 00 00 00 0C. |
| 0x0C | UInt32 | Number of Events. |
| 0x10 | Start of first event | |
Event
An event is split up into two structures. The first event structure contains information about the frames and the second event structure contains information about the sound. In a file all the event structure 1 comes first, and after that, all the event structure 2. It is the event that controls the info about the animation sound and stores a reference to a BRSAR sound effect.
| Offset | Type | Description |
|---|---|---|
| 0x00 | UInt32 | Start frame. |
| 0x04 | Int32 | End frame. If no end frame is used, this is set to -1. |
| 0x08 | Byte | Type and Playback Interval. The first bit is Type (0 = Range, 1 = Trigger). The second bit is Playback Interval (0 = true, 1 = false). |
| 0x09 | Byte | Padding? |
| 0x0A | Byte | Unknown. |
| 0x0B | Byte | Padding? |
| 0x0C | UInt32 | Unknown. |
| 0x10 | UInt32 | Offset to start of the event structure 2 used in this event. Relative to the end of the DATA header. |
Event structure 2 is more unknown. It has a string reference stored to a BRSAR sound effect and some sound settings.
| Offset | Type | Description |
|---|---|---|
| 0x00 | UInt32 | Unknown. |
| 0x04 | UInt32 | Unknown. Always 0xFFFFFFFF. |
| 0x08 | Byte | Unknown. |
| 0x09 | Byte | Unknown. |
| 0x0A | Byte | Unknown. |
| 0x0B | Byte | Unknown. |
| 0x0C | UInt32 | Unknown. |
| 0x10 | Byte | Sound volume. |
| 0x11 | Byte[3] | Padding? |
| 0x14 | Float | Pitch. |
| 0x18 | Byte[4] | Padding? |
| 0x1C | UInt32 | User Parameter. Unknown meaning. |
| 0x20 | StringNT | Sound Name. This string is a null-termined ASCII string that refers to a BRSAR sound. |
Tools
The following tools can handle BRASD files:
- BRASD Editor, by Wexos