BFASD (File Format)
A BFASD file (Binary caFe Animation Sound Data) contains information related to how certain models produce sound based on their skeleton animation on Wii U. It is a direct update of the Wii format BRASD.
File Format
File Header
This is the structure for a BFASD header.
| Offset | Type | Description |
|---|---|---|
| 0x00 | Char[4] | File magic. Always FASD in ASCII. |
| 0x04 | UInt16 | Byte-order-mark. FE FF for big endian, FF FE for little endian. |
| 0x06 | UInt16 | Header size. Always 00 14. |
| 0x08 | UInt32 | Version. Always 01 00 00 00. |
| 0x0C | UInt32 | Length of the file in bytes. |
| 0x10 | UInt16 | Number of sections. Always 00 01. |
| 0x12 | UInt16 | Unknown. Always 00 00. |
| 0x14 | UInt32 | Section 1 flag. Always 80 00 00 00. |
| 0x18 | UInt32 | Offset to DATA section. |
| 0x1C | UInt32 | Length of DATA section. |
DATA
The DATA section starts with a section header.
| Offset | Type | Description |
|---|---|---|
| 0x00 | Char[4] | Section magic. Always DATA in ASCII. |
| 0x04 | UInt32 | Length of this section. |
Event Header
After the DATA header comes the header for the event.
| Offset | Type | Description |
|---|---|---|
| 0x00 | UInt32 | Number of frames in corresponding animation. |
| 0x04 | UInt16 | Event reference flag. Always 0x8100. |
| 0x06 | UInt16 | Padding. |
| 0x08 | Int32 | Offset to the events, relative to 0x04 in this structure. Always 0x0C. |
| 0x0C | UInt32 | Number of events. |
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 BFSAR 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 | Flags. 1 means that the event is a trigger, 2 means that the end frame is positive infitie and 4 means that the start frame is negative infinite. |
| 0x09 | SByte | Number of loops. |
| 0x0A | Byte | Playback loop interval after the number of loops. |
| 0x0B | Byte | Padding. |
| 0x0C | UInt16 | Offset to structure 2 flag. |
| 0x0E | UInt16 | Padding. |
| 0x10 | Int32 | Offset to start of the event structure 2 used in this event. Relative to the start of this event entry. |
Event structure 2 stores some more information about the sound. It has a string reference stored to a BFSAR sound effect and some sound settings.
| Offset | Type | Description |
|---|---|---|
| 0x00 | UInt32 | Option flags. xxxx xxAB:
|
| 0x04 | UInt32 | Placeholder for sound index. Always 0xFFFFFFFF. |
| 0x08 | UInt16 | Offset flag. |
| 0x0A | UInt16 | Padding. |
| 0x0C | Int32 | Sound label offset. |
| 0x10 | Byte | Sound volume. |
| 0x11 | Byte | Playback direction. 0 = both, 1 = forward and 2 = backward |
| 0x12 | Byte | Sequence variable index. 0 - 15 are local variables and 16 - 31 global variables. |
| 0x13 | Byte | Padding. |
| 0x14 | Float | Pitch. |
| 0x18 | UInt32 | Padding. |
| 0x1C | UInt32 | User Parameter. Unknown meaning. |
| 0x20 | String | Sound Name. This string is null-terminated ASCII string and refers to a BFSAR sound effect. |
Tools
The following tools can handle BFASD files:
- Wexos's Toolbox, by Wexos
