wiithon.binary.align module

Rounding helper for the offsets of a disc image

Wii structures are stored on boundaries, a file starts on 0x8000 and a section on 0x20, so almost every offset computed by wiithon.builder.disc_builder goes through align()

Some files structures are also aligned like U8

wiithon.binary.align.align(value, boundary)

Round a value up to the next multiple of boudary

A value that is already a multiple is returned unchanged

Parameters:

• value (int) – The number to round up

• boundary (int) – The boundary to align on. It must be a power of 2

Return type:

int

Returns:

The smallest multiple of boundary that is greater or equal to value

Warning

The boundary is not checked. If the boundary is not a power of two, the result will be wrong

Examples

>>> align(0x1234, 0x20)
4672 # = 0x1240
>>> align(0x400, 0x20)
1024 # = 0x400