DeflateHuff

Performs Huffman encoding .

Syntax

IppStatus ippsDeflateHuff_8u(const Ipp8u* pLitSrc, const Ipp16u* pDistSrc, Ipp32u srcLen, Ipp8u* pCode, Ipp32u* pCodeLenBits, IppDeflateHuffCode* pLitHuffCodes[256], IppDeflateHuffCode* pDistHuffCodes[30], Ipp8u* pDst, Ipp32u* pDstIdx);

Parameters

pLitSrc	Pointer to the literals/lengths source vector.
pDistSrc	Pointer to the distances source vector.
srcLen	Length of the source vectors.
pCode	Pointer to the bit buffer.
pCodeLenBits	Pointer to the number of valid bits in the bit buffer.
pLitHuffCodes	Pointer to the literals/lengths Huffman codes.
pDistHuffCodes	Pointer to the distances Huffman codes.
pDst	Pointer to the destination vector.
pDstIdx	Pointer to the index in the destination vector.

Description

The function ippsDeflateHuff is declared in the ippdc.h file. This function performs Huffman encoding of source data.

The function parameter pDstIdx returns the index of the current position in the destination vector: zlib uses the intermediate buffer for the Huffman encoding and we need to know the indexes of the first (input parameter) and the last (output parameter) symbols, which are written by the function.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error if one of the specified pointers is NULL.