MI_UnfilterDiff**


C Specification

#include <nitro/mi.h>

void MI_UnfilterDiff8( 
    const void*     srcp, 
          void*     destp );

void MI_UnfilterDiff16( 
    const void*     srcp, 
          void*     destp );
    

Description

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 four, you must adjust the data size 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. You cannot expand the data directly in VRAM.

MI_UnfilterDiff16 writes in 16-bit units. Although you can expand the data in DTCM or main memory, this function is slower than MI_UnfilterDiff8.

Internal Operations

This function uses the CPU for the process without using system calls or DMA.

Arguments

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.

Return Values

None.

See Also

MI_UncompressHuffman, MI_UncompressRL*, SVC_UncompressLZ*

Revision History

11/15/2004 Initial version.