Kingdom Hearts II
SCD Format
SCD stands for Sound Container Data.
This file is a container for many related sounds.
Header
| Offset | Type | Description |
|---|---|---|
| 0x0 | char[8] | File identifier, always SEDBSSCF. which stands for Sound Environment DataBase ? ? ? ? |
| 0x8 | uint32 | File version, always 3. |
| 0xC | uint8 | Endianness (0 = LE, 1 = BE) |
| 0xD | uint8 | SSCF version. Always 0x400. |
| 0xE | uint16 | Header Size |
| 0x10 | uint32 | Total File Size |
| 0x14 | uint32[7] | Padding |
Table Offset Header
| Offset | Type | Description |
|---|---|---|
| 0x0 | uint16 | Table 0 Offset Size |
| 0x2 | uint16 | Size of Sound Entry Offset Table; this corresponds to the number of sounds within the SCD. |
| 0x4 | uint16 | Table 2 Offset Size |
| 0x6 | uint16 | Unknown |
| 0x8 | int32 | Offset to Table 0 |
| 0xC | int32 | Sound Entry Table Offset |
| 0x10 | int32 | Offset to Table 2 |
| 0x14 | int32 | Unknown |
| 0x18 | int32 | Unknown Offset; must be the same offset as the first offset found in Table 2. |
| 0x1C | int32 | Padding |
Immediately after Table Offset Header is another table of offsets, not pointed to in the header. </br> This table of offsets points to offsets that map sounds in the SCD to ID numbers used by the game.</br> The size of this table seems to be determined by Table 0 Offset Size.</br> This is referred to here as a Sound Mapping Table. </br>
Sound Mapping Table
| Offset | Type | Description |——–|——-|———— | 0x0 | uint8 | Unknown; seems to be set to 1 if a sound effect is mapped, and 0 if not? | 0x1 | uint8 | Unknown; seems to be set to 2 if a sound effect is mapped, and 1 if not? | 0x2 | uint8 | Unknown | 0x3 | uint8 | Unknown | 0x4 | uint16 | Unknown | 0x6 | uint16 | Unknown | 0x8 | float | Volume to play at | 0xC | int32 | Sound Effect: Index in Game | 0x10 | int16 | Sound Effect: Index in SCD? | 0x12 | int16 | Sound Effect: Index in SCD
This table has entries of two different sizes, 0x10 and 0x14. </br> An example of this can be seen with how se999 loads its sound effects. While se999 only has 96 sound effects found inside</br> on both PC and PS2, it uses indexes up to 154, with some indexes like 60 through 70 being left blank. </br> Dummy entries that are only 0x10 long are used to pad sound effect indexes between numbers that are used and have sounds in the SCD for them.</br> Otherwise, entries that are 0x14 long are used where the last 4 bytes are used to map sounds in the SCD to the specified index.
Table 0
First entry seems to be 0x58 long. </br> All entries after seem to be 0x62 long. </br>
Sound Entry Table
| Offset | Type | Description |——–|——-|———— | 0x0 | Unknown[0x4F] | Unknown | 0x50 | uint32 | Audio Length (in ms) | 0x54 | uint32 | Unknown
Most data seems to be identical here, except for 0x50. </br> That int determines how long to play the sound effect for in-game, before cutting the audio off. </br>
Stream (pointed to by SoundEntry Table)
| Offset | Type | Description |——–|——-|———— | 0x0 | uint32 | Stream Size | 0x4 | uint32 | Channel Count | 0x8 | uint32 | Sample Rate | 0xC | uint32 | Codec | 0x10 | uint32 | Loop Start | 0x14 | uint32 | Loop End | 0x18 | uint32 | Extra Data Size | 0x1C | uint32 | Auxiliary Chunk Count | 0x20 | uint8[StreamSize] | Data
Table 2
Entries are 0x80 long.