Sound Data (.sdat)
SDAT or Sound Data contains sound data for the game.
The Main File
The main file contains of a File Header, and optional Symbol block, an Info block, a File Allocation Block, and a File block. The entire file is padded to 0x20 bytes.
| Type | Description |
|---|---|
| SDATFileHeader | SDAT File Header (Magic: SDAT. Always contains 3 or 4 blocks) |
| Block | Symbol Block |
| Block | Info Block |
| Block | File Allocation Block |
| Block | File Block |
| —– | Padding |
SDAT File Header
The standard file header for the SDAT file. The header is padded by 0x20 bytes.
| Offset | Type | Description |
|---|---|---|
| 0x00 | char[4] | Magic identifier for the file (SDAT) |
| 0x04 | u16 | Byte order. 0xFEFF for big endian, and 0xFFFE for little endian. Note, that these values I gave are in big endian |
| 0x06 | Version | Version of this file. It is always 1.0 |
| 0x08 | u32 | Size of this file |
| 0x0C | u16 | Size of this header |
| 0x0E | u16 | Number of blocks in the file |
| 0x10 | a32 | Offset to Symbol block (can be null) |
| 0x14 | u32 | Symbol block size (0 if null) |
| 0x18 | a32 | Offset to Info block |
| 0x1C | u32 | Info block size |
| 0x20 | a32 | Offset to File Allocation block |
| 0x24 | u32 | File Allocation block size |
| 0x28 | a32 | Offset to File block |
| 0x2C | u32 | File block size |
Symbol Block
Contains names for entries in the Info block. This block is optional. Magic is SYMB.
| Offset | Type | Description |
|---|---|---|
| 0x00 | r32 | Reference to sequence name table |
| 0x04 | r32 | Reference to sequence archive name table |
| 0x08 | r32 | Reference to bank name table |
| 0x0C | r32 | Reference to wave archive name table |
| 0x10 | r32 | Reference to player name table |
| 0x14 | r32 | Reference to group name table |
| 0x18 | r32 | Reference to stream player name table |
| 0x1C | r32 | Reference to stream name table |
| 0x20 | u32[0x6] | Padding for alignment |
Each reference points to a Table<r32> where each reference leads to a null terminated string (can be null if an entry doesn’t exist for that index), except for the offset for sequence archives, as they lead to something different.
Sequence Archive Symbol Entry
| Offset | Type | Description |
|---|---|---|
| 0x00 | r32 | Reference to sequence archive name |
| 0x04 | r32 | Reference to Table<r32> of sequence names |
Info Block
Contains information about all the entries in the sound archive. If the symbol block exists, an info and symbol entry with the same index in a table means that the info links with that string and has that name. Magic is INFO.
| Offset | Type | Description |
|---|---|---|
| 0x00 | r32 | Reference to sequence info table |
| 0x04 | r32 | Reference to sequence archive info table |
| 0x08 | r32 | Reference to bank info table |
| 0x0C | r32 | Reference to wave archive info table |
| 0x10 | r32 | Reference to player info table |
| 0x14 | r32 | Reference to group info table |
| 0x18 | r32 | Reference to stream player info table |
| 0x1C | r32 | Reference to stream info table |
| 0x20 | u32[0x6] | Padding for alignment |
Each reference points to a Table<r32> where each reference leads to a its corresponding info information. If an offset to an item is 0, then there is no data for that index.
Sequence Info
Contains information for each sequence.
| Offset | Type | Description |
|---|---|---|
| 0x00 | u32 | File Id |
| 0x04 | u16 | Bank Id |
| 0x06 | u8 | Volume |
| 0x07 | u8 | Channel Priority |
| 0x08 | u8 | Player Priority |
| 0x09 | u8 | Player Id |
| 0x0A | u16 | Padding |
Sequence Archive Info
Contains information for each sequence archive.
| Offset | Type | Description |
|---|---|---|
| 0x00 | u32 | File Id |
Bank Info
Contains information for each bank.
| Offset | Type | Description |
|---|---|---|
| 0x00 | u32 | File Id |
| 0x04 | s16 | Wave Archive 0 (can be -1 for null) |
| 0x08 | s16 | Wave Archive 1 (can be -1 for null) |
| 0x0C | s16 | Wave Archive 2 (can be -1 for null) |
| 0x10 | s16 | Wave Archive 3 (can be -1 for null) |
Wave Archive Info
Contains information for each wave archive.
| Offset | Type | Description |
|---|---|---|
| 0x00 | u32 | File Id in form 0xLLFFFFFF where F is the file id, and L is a bool to whether or not the wave archive should be loaded individually |
Player Info
Contains information for each player.
| Offset | Type | Description |
|---|---|---|
| 0x00 | u16 | Max number of sequences |
| 0x02 | u16 | Bitflags to allocate for each channel. A value of 0 allocates all channels automatically |
| 0x04 | u32 | Heap size to reserve in memory |
Group Info
Contains information for each group.
| Offset | Type | Description |
|---|---|---|
| 0x00 | Table<GroupEntry> |
Group entries |
Group Entry
An entry to a group has the following layout:
| Offset | Type | Description |
|---|---|---|
| 0x00 | EntryType | Type of entry in the group |
| 0x01 | u8 | Bitflags of what to load. If binary anding the value with (0b1 « EntryType) is not 0, then it’ll load that value. For example, 0x3 loads the sequence and bank |
| 0x02 | u16 | Padding |
| 0x04 | u32 | Entry Id |
Entry Type
An enumeration for the entry type. Each identifier is a byte.
| Identifier | Description |
|---|---|
| 0 | Sequence |
| 1 | Bank |
| 2 | Wave Archive |
| 3 | Sequence Archive |
Stream Player Info
Contains information for each stream player.
| Offset | Type | Description |
|---|---|---|
| 0x00 | u8 | Number of channels (1 for mono, 2 for stereo) |
| 0x01 | u8 | Left/Mono channel |
| 0x02 | u8 | Right channel (if stereo) |
| 0x03 | u8[21] | Padding |
Stream Info
Contains information for each stream.
| Offset | Type | Description |
|---|---|---|
| 0x00 | u32 | File Id in form 0xLLFFFFFF where F is the file id, and L is a bool to whether or not the stream should be automatically converted to stereo |
| 0x04 | u8 | Volume |
| 0x05 | u8 | Priority |
| 0x06 | u8 | Stream Player Id |
| 0x07 | u8[0x5] | Padding |
File Allocation Block
Contains a table of file entries that lead to the file positions and their sizes. Magic is “FAT “.
| Offset | Type | Description |
|---|---|---|
| 0x00 | Table<FileEntry> |
File entries |
File Entry
| Offset | Type | Description |
|---|---|---|
| 0x00 | a32 | Absolute offset to the file (is never null) |
| 0x04 | u32 | File size |
| 0x08 | u32[2] | Padding |
File Block
This block contains all the files. Since this is the last block, it is aligned to 0x20. The first file starts after a 0x20 alignment. A 0x20 alignment is applied after each file. Magic is FILE.