DecodeLZ77DynamicHuff

Performs dynamic Huffman decoding.

Syntax

IppStatus ippsDecodeLZ77DynamicHuff_8u(Ipp8u** ppSrc, int* pSrcLen, IppLZ77Pair** ppDst, int* pDstLen, IppLZ77Flush flush, IppLZ77State_8u* pLZ77State);

Parameters

ppSrc	Double pointer to the source buffer.
pSrcLen	Pointer to the length of the source vector.
ppDst	Double pointer to the destination vector.
pDstLen	Pointer to the length of the destination vector.
flush	Specifies the decoding mode for data blocks.
pLZ77State	Pointer to the LZ77 decoding structure.

Description

The function ippsDecodeLZ77DynamicHuff is declared in the ippdc.h file. This function performs decoding of the source data ppSrc with the dynamic Huffman codes (see RFC1951 specification).

Exit from the ippsDecodeLZ77FixedHuff function occurs when:

the input stream has ended, but the end-of-block marker is not decoded and the function returns the ippStsSrcSizeLessExpected status.
the input stream has not ended, but the destination buffer is full and the function returns the ippStsDstSizeLessExpected status.
the input stream has ended, the end-of-stream marker is decoded and the function returns the ippStsNoErr status.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error if one of the specified pointers is NULL.
ippStsSizeErr	Indicates an error if DstLen is less than or equal to 0.
ippStsSrcSizeLessExpected	Indicates a warning that the source buffer is less than expected (the end-of-block marker is not encoded).
ippStsDstSizeLessExpected	Indicates a warning that the destination buffer is full.
ippStsStreamEnd	Indicates a warning that the stream ends. This warning returns only if the flush parameter is set to IppLZ77FinishFlush.