assets.bin (File Format)

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assets.bin is a file from Diddy Kong Racing DS that contains all the game's models and textures.

File Format

The file byte order is always little endian.

Header

The file starts with a header that is 4 bytes long.

Offset	Type	Description
0x00	UInt16	Number of assets (N). The value is 0x910 (2320).
0x02	Byte[2]	Padding.
0x08	End of header, start of Asset ID List

Asset ID List

This is a list of all the asset IDs from the game. The purpose of indexing them is because that's how they're linked on LEV files and other internal files.

Offset	Type	Description
0x00	UInt16[N]	Asset IDs.
0x00 + 2 * N	Byte[2]	Padding.
0x02 + 2 * N	End of this section, start of Entry List

Entry List

Followed by the Asset ID List, there's a list of offsets and sizes for each of the assets. All offsets are absolute.

Format of an asset.bin entry

Offset	Type	Description
0x00	Int32	Offset to asset data.
0x02	Int32	Asset size.

Asset Data

Each asset consists of a header with some information and the file data.

Format of an asset.bin entry

Offset	Type	Description
0x00	Byte	Compression type: 0 = No compression 1 = Huffman 2 = LZ77 3 = Unknown 4 = RunLength
0x01	Byte[3]	Unknown flags. It is only known that they contain information about what type of data is stored.
0x04	Int32	Uncompressed size.
0x08	End of this section, start of file data

Tools

The following tools can handle assets.bin:

• (none)