VLCEncodeBlock

Performs VLC encoding of a block of data.

Syntax

ippsVLCEncodeBlock_16s1u (const Ipp16s* pSrc, int srcLen, Ipp8u** ppDst, int* pDstBitsOffset, const IppsVLCEncodeSpec_32s* pVLCSpec);

Parameters

pSrc	Pointer to the source buffer.
srcLen	Number of elements in the pSrc.
ppDst	Double pointer to the destination bitstream.
pDstBitsOffset	Pointer to the input/output bit position in the pDst.
pVLCSpec	Pointer to the VLC encoder specification structure.

Description

The function ippsVLCEncodeBlock is declared in the ippdc.h file. This function encodes srcLen elements of the source vector pSrc and stores the result in the destination buffer pDst. After encoding the function shifts the pDst pointer by the number of successfully written bytes. The function updates pDstBitsOffset setting it to the actual bit position in the destination buffer.

The ippsVLCEncodeBlock function uses the VLC table from the encoder specification structure pVLCSpec that must be initialized by the functions ippsVLCEncodeInitAlloc or ippsVLCEncodeInit beforehand.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error if one of the specified pointers is NULL.
ippStsVLCInputDataErr	Indicates an error if incorrect input is used.