BFSTM (File Format)
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The BFSTM file format is an updated spec from its predecessor, BRSTM. It contains audio streams in uncompressed ADPCM.
There is a header section along with an INFO, SEEK, and DATA section.
File Header
The file starts with a typical header structure.
| Offset | Size | Description |
|---|---|---|
| 0x00 | 4 | Magic Bytes (FSTM) |
| 0x04 | 2 | Byte Order Mark (0xFEFF for Big Endian) |
| 0x06 | 2 | Header Size (always 0x40) |
| 0x08 | 4 | Unknown Constant (always 0x30000) |
| 0x0C | 4 | Size of Entire File |
| 0x10 | 4 | Unknown Constant (always 0x30000) |
| 0x14 | 4 | Section 0 Flag (0x40000000) |
| 0x18 | 4 | INFO Offset (always 0x40) |
| 0x1C | 4 | INFO Size (always 0x100) |
| 0x20 | 4 | Section 1 Flag (0x40010000) |
| 0x24 | 4 | SEEK Offset (always 0x140) |
| 0x28 | 4 | SEEK Size |
| 0x2C | 4 | Section 2 Flag (0x40020000) |
| 0x30 | 4 | DATA Offset |
| 0x34 | 4 | DATA Size |
| 0x38 | 8 | Padding |
| 0x40 | End of file header | |