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The BRSAR (Binary Revolution Sound ARchive) format is used to store sound effects and some music. It is used in Mario Kart Wii, Super Smash Bros. Brawl, The Legend of Zelda: Skyward Sword and other games. An index list of the known values of the revo_kart.brsar file used in Mario Kart Wii can be found here.
The file begins with a header of size 0x40 bytes.
| Offset |
Type |
Description
|
| 0x00 |
String |
File magic. RSAR 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 of the file format. "revo_kart.brsar" uses 01 04. "HomeButtonSe.brsar" (used for the Home Menu) uses 01 01.
|
| 0x08 |
UInt32 |
Length of the file.
|
| 0x0C |
UInt16 |
Length of the header (always 0x40).
|
| 0x0E |
UInt16 |
Number of sections.
|
| 0x10 |
UInt32 |
Offset to the SYMB section.
|
| 0x14 |
UInt32 |
Size of the SYMB section.
|
| 0x18 |
UInt32 |
Offset to the INFO section.
|
| 0x1C |
UInt32 |
Size of the INFO section.
|
| 0x20 |
UInt32 |
Offset to the FILE section.
|
| 0x24 |
UInt32 |
Size of the FILE section.
|
| 0x28 |
Byte[24] |
Padding.
|
| 0x40 |
End of header
|
Sections
Unless otherwise noted, offsets in each section are relative to the start of the section block, plus 0x8.
SYMB
The SYMB section consists of an FST-like data structure. It contains 3 header-less subsections.
| Offset |
Type |
Description
|
| 0x00 |
String |
Section magic. SYMB in ASCII.
|
| 0x04 |
UInt32 |
Size of the SYMB section.
|
| 0x08 |
UInt32 |
Offset to file name table.
|
| 0x0C |
UInt32 |
Mask table offset 1
|
| 0x10 |
UInt32 |
Mask table offset 2
|
| 0x14 |
UInt32 |
Mask table offset 3
|
| 0x18 |
UInt32 |
Mask table offset 4
|
| 0x1C |
End of header
|
SYMB File Name Table
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Number of entries (N)
|
| 0x04 |
UInt32[N] |
Offset to file name
|
SYMB Mask Table
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Unknown. Type of mask?
|
| 0x04 |
UInt32 |
Number of entries
|
SYMB Mask Entry
Information about this is unknown at this time.
INFO
The INFO section contain parameters about the sounds in a BRSAR.
| Offset |
Type |
Description
|
| 0x00 |
String |
Section magic. INFO in ASCII.
|
| 0x04 |
UInt32 |
Size of the INFO section.
|
| 0x08 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x0C |
UInt32 |
Offset to the sound data table.
|
| 0x10 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x14 |
UInt32 |
Offset to the soundbank table.
|
| 0x18 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x1C |
UInt32 |
Offset to the player info table.
|
| 0x20 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x24 |
UInt32 |
Offset to the collection table.
|
| 0x28 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x30 |
UInt32 |
Offset to the group table.
|
| 0x28 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x34 |
UInt32 |
Offset to the Sound Count table.
|
| 0x38 |
End of header
|
Sound Data Table
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Number of entries (N)
|
| N * 8 + 0x04 |
UInt32 |
Unknown. Always 0x01000000.
|
| N * 8 + 0x08 |
UInt32 |
Offset to entry
|
Sound Data Entry
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
File name index
|
| 0x04 |
UInt32 |
File collection index
|
| 0x08 |
UInt32 |
PlayerID
|
| 0x0C |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x10 |
UInt32 |
Offset to third subsection.
|
| 0x14 |
Byte |
Volume
|
| 0x15 |
Byte |
PlayerPriority
|
| 0x16 |
Byte |
SoundType:
- 0x1 = SEQ
- 0x2 = STRM
- 0x3 = WAVE
|
| 0x17 |
Byte |
RemoteFilter
|
| 0x18 |
UInt32 |
Unknown. More flags? 0x19 seems to control section type of the second subsection.
|
| 0x1C |
UInt32 |
Offset to second subsection
|
| 0x20 |
UInt32 |
UserParam1
|
| 0x24 |
UInt32 |
UserParam2
|
| 0x28 |
Byte |
PanMode:
|
| 0x29 |
Byte |
PanCurve:
- 0x0 = Sqrt
- 0x1 = Sqrt0DB
- 0x2 = Sqrt0DBClamp
- 0x3 = SinCos
- 0x4 = SinCos0DB
- 0x5 = SinCos0DBClamp
- 0x6 = Linear
- 0x7 = Linear0DB
- 0x8 = Linear0DBClamp
|
| 0x2A |
Byte |
ActorPlayerID
|
| 0x2B |
Byte |
Unknown. Padding?
|
Sound Data Subsection 2
RSEQ
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
SeqLabelEntry
|
| 0x04 |
UInt32 |
Soundbank index
|
| 0x08 |
Byte[3] |
Unknown.
|
| 0x0B |
Byte |
RSEQAllocTrack
|
| 0x0C |
Byte |
SeqChannelPriority
|
| 0x0D |
Byte[7] |
Unknown. Padding?
|
RWSD
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
SoundDataNode
|
| 0x04 |
Byte[3] |
Unknown.
|
| 0x07 |
Byte |
RWSDAllocTrack
|
| 0x08 |
Byte |
ChanelPriority
|
| 0x09 |
Byte[7] |
Unknown. Padding?
|
RSTM
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Start Position
|
| 0x04 |
Byte |
Unknown.
|
| 0x05 |
Byte |
AllocChannelCount
|
| 0x06 |
Byte |
RSTMAllocTrack
|
| 0x07 |
Byte[5] |
Unknown.
|
Sound Data Subsection 3
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Sound3DParam flags
|
| 0x04 |
Byte |
DecayCurve
|
| 0x05 |
Byte |
DecayRatio
|
| 0x06 |
Byte[6] |
Unknown.
|
Soundbank Table
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Number of entries (N)
|
| N * 8 + 0x04 |
UInt32 |
Unknown. Always 0x01000000.
|
| N * 8 + 0x08 |
UInt32 |
Offset to the entry
|
Soundbank Entry
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
File name index
|
| 0x04 |
UInt32 |
File collection index
|
| 0x08 |
UInt32 |
Bank index
|
Player Info Table
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Number of entries.
|
| 0x04 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x08 |
UInt32 |
Offset to the first entry.
|
| 0x04 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x08 |
UInt32 |
Offset to the second entry.
|
| ...
|
Player Info Entry
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
File name index
|
| 0x04 |
Byte |
Playable Sound Count
|
| 0x05 |
Byte[11] |
Unknown. Padding?
|
Collection Table
This section controls the BRSAR indexes shown in BrawlBox.
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Number of entries.
|
| 0x04 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x08 |
UInt32 |
Offset to the first entry.
|
| 0x04 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x08 |
UInt32 |
Offset to the second entry.
|
| ...
|
Collection Entry
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Length of the RBNK, RSEQ, or RWAV file except the audio data. Length of the entire file for external files.
|
| 0x04 |
UInt32 |
Length of the audio data. Null for RSEQ or external files.
|
| 0x08 |
UInt32 |
Unknown. Always 0xFFFFFFF
|
| 0x0C |
Byte[8] |
Unknown. Padding?
|
| 0x14 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x18 |
UInt32 |
Offset to the second subsection, or to the external file name for external files. Usually follows this value anyway.
|
| 0x1C |
UInt32 |
Group index
|
| 0x20 |
UInt32 |
Index within group
|
Group Table
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Number of entries.
|
| 0x04 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x08 |
UInt32 |
Offset to the first entry.
|
| 0x04 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x08 |
UInt32 |
Offset to the second entry.
|
| ...
|
Group Data Entry
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
File name index
|
| 0x04 |
UInt32 |
Unknown. Always 0xFFFFFFF
|
| 0x08 |
Byte[8] |
Unknown. Padding?
|
| 0x10 |
UInt32 |
Offset to the RSEQ, RBNK, or RWSD file.
|
| 0x14 |
UInt32 |
Size of the RSEQ, RBNK, or RWSD file.
|
| 0x18 |
UInt32 |
Offset to the RWAR or DSP file.
|
| 0x1C |
UInt32 |
Size of the RWAR or DSP file.
|
| 0x20 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x24 |
UInt32 |
Offset to the second subsection. Usually follows this value anyway.
|
| 0x28 |
UInt32 |
Number of entries in the subsection. All data after this is absent if this is 0x00.
|
| 0x2C |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x30 |
UInt32 |
Offset to the first entry
|
| 0x34 |
UInt32 |
Unknown. Always 0x01000000.
|
| 0x38 |
UInt32 |
Offset to the second entry.
|
| ...
|
Subsection 2 Entry
| Offset |
Type |
Description
|
| 0x00 |
UInt32 |
Group index
|
| 0x04 |
UInt32 |
Offset to the file, relative to the value at 0x14 of the main entry.
|
| 0x08 |
UInt32 |
Size of the file.
|
| 0x0C |
UInt32 |
Offset to the audio data, relative to the value at 0x1C of the main entry.
|
| 0x10 |
UInt32 |
Size of the audio data.
|
| 0x14 |
UInt32 |
Unknown. Padding?
|
Sound Count Table
| Offset |
Type |
Description
|
| 0x00 |
UInt16 |
SeqSoundCount
|
| 0x02 |
UInt16 |
SeqTrackCount
|
| 0x04 |
UInt16 |
StrmSoundCount
|
| 0x04 |
UInt16 |
StrmTrackCount
|
| 0x06 |
UInt16 |
WaveSoundCount
|
| 0x08 |
UInt16 |
WaveTrackCount
|
| 0x0A |
Byte[20] |
Unknown. Padding?
|
FILE
| Offset |
Type |
Description
|
| 0x00 |
String |
Section magic. FILE in ASCII.
|
| 0x04 |
UInt32 |
Size of the FILE section.
|
| 0x08 |
Byte[24] |
Padding
|
| 0x0C |
– |
File data
|
Tools
The following tools can handle BRSAR files: