#include <nitro/mi.h>u32 MI_CompressHuffman( const u8 *srcp, u32 size, u8 *dstp, u8 huffBitSize, u8 *work);
| srcp | Source address where the data to compress is stored. |
| size | Data size of the source to compress. |
| dstp | Needs a pointer to the compression destination buffer and a region greater than the source data size. Needs a 4-byte alignment. |
| huffBitSize | Bit size (4 or 8) to Huffman encode. |
| work | Work buffer used in Huffman compression. Requires the size of MI_HUFFMAN_COMPRESS_WORK_SIZE. Needs a 4-byte alignment. |
Returns the size of the compressed data. If the data after compression is larger than the source file, no compression is performed, and 0 is returned.
Performs Huffman compression and writes to a designated memory region. A region of the same size as the source data must be prepared in the compression destination buffer.
The function writes in 8-bit units, so for NITRO, an address in VRAM cannot be specified in dstp.
An address in VRAM can be specified in srcp for both NITRO and TWL.
Processing takes place only on the CPU, without the use of a system call or DMA.
MI_UncompressHuffman
MI_ReadUncompHuffman
MI_CompressLZ*
MI_CompressRL
2008/12/05 Added TWL-related description.
2005/06/28 Added work to Syntax.
2005/02/01 Initial version.
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