Difference between revisions of "BRSEQ (File Format)"
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The following tools can handle BRSEQ files: | The following tools can handle BRSEQ files: | ||
| − | * | + | * rseq2midi (Converts BRSEQ to MIDI) |
[[Category:File Format/Wii]] | [[Category:File Format/Wii]] | ||
Revision as of 20:33, 15 December 2021
BRSEQ (Binary Revolution SEQuence) is a sub file format found in BRSAR files from games like Mario Kart Wii. It corresponds to the music data represented in a MIDI-like file, but in binary. Commands that process changes in attributes such as sound generation and volume change over time are described on this kind of file. Since the sequence data is simply a set of commands, sounds are actually producing using bank data (stored in BRBNK sub files) that corresponds to the sound source data.
File Format
File Header
The file starts with a file header that is 0x20 bytes long.
| Offset | Type | Description |
|---|---|---|
| 0x00 | String | File magic. Always RSEQ 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. |
| 0x08 | UInt32 | Length of the file in bytes. |
| 0x0C | UInt16 | Length of this header in bytes. |
| 0x0E | UInt16 | Number of sections. |
| 0x10 | UInt32 | Offset to DATA section. |
| 0x14 | UInt32 | Length of DATA section. |
| 0x18 | UInt32 | Offset to LABL section. |
| 0x1C | UInt32 | Length of LABL section. |
| 0x20 | End of this file header | |
DATA
The DATA starts with a header.
| Offset | Type | Description |
|---|---|---|
| 0x00 | String | Section magic. Always DATA in ASCII. |
| 0x04 | UInt32 | Length of this section. |
| 0x08 | UInt32 | Length of this header (always 0x0C). |
After the header, the sound data is specified. It contains different commands and parameters for the sound.
LABL
| Offset | Type | Description |
|---|---|---|
| 0x00 | String | Section magic. Always LABL in ASCII. |
| 0x04 | UInt32 | Length of this section. |
| 0x08 | UInt32 | N = Number of sound labels. |
| 0x0C | UInt32[N] | Offset to label, relative to offset 0x08 in this header. |
This is the label structure.
| Offset | Type | Description |
|---|---|---|
| 0x00 | UInt32 | Offset to the sound data this label uses. Relative to the end of the DATA header. |
| 0x04 | UInt32 | L = Length of label string. |
| 0x08 | String | Label name. |
Tools
The following tools can handle BRSEQ files:
- rseq2midi (Converts BRSEQ to MIDI)