#include <nitro/mi.h>void MI_UnfilterDiff8( const void* srcp, void* destp );void MI_UnfilterDiff16( const void* srcp, void* destp );void MI_UnfilterDiff32( const void* srcp, void* destp );| srcp | The source address where difference filtered-data is stored. |
| destp | The destination address where the data is expanded. Can be the same region as the source address. |
None.
This function expands the data to which the difference filter was applied and writes it to the specified memory region. The source address must be aligned to a 4-byte boundary. When the size of the compressed data is not a multiple of 4, adjust by padding it with zeros. The pointers to the source and destination addresses may point to the same region.
MI_UnfilterDiff8 writes in 8-bit units. On NITRO, you cannot decompress directly to VRAM. On TWL, this is possible, but it is quite slow.
MI_UnfilterDiff16 writes in 16-bit units. It is also possible to decompress to DTCM or VRAM.
MI_UnfilterDiff32() writes in 32-bit units.
It operates at a higher speed than both the MI_UnfilterDiff8 and MI_UnfilterDiff16 functions.
It is also possible to decompress to DTCM or VRAM.
Processing only takes place on the CPU, without the use of a system call or DMA.
MI_FilterDiff
MI_UncompressHuffman
MI_UncompressRL*
MI_UncompressLZ*
2008/07/02 Added the 32-bit version. Revised the description of internal operations.
2004/11/15 Initial version.
CONFIDENTIAL