VLCScan4x4DC

Performs adaptive scanning of the DC coefficients.

Syntax

IppStatus ippiVLCScan4x4DC_JPEGXR_32s(const Ipp32s pSrcCoeffs[16], Ipp32u numModelBits, Ipp32s pDstResidual[16], Ipp32s* pDstCoeffsScan, Ipp32u* pNumNonZero, IppiVLCState_JPEGXR* pVLCState);

Parameters

pSrcCoeffs	Pointer to to the source vector of DC coefficient in scan order.
numModelBits	Maximal number of bits to encode.
pDstResidual	Pointer to the destination prediction residuals.
pDstCoeffsScan	Pointer to the destination scan coefficients with statistic.
pNumNonZero	Pointer to the number of coefficients with non-zero model bits.
pVLCState	Pointer to the VLC state structure.

Description

The function ippiVLCScan4x4DC_JPEGXR is declared in the ippj.h file.

This function performs adaptive scanning of the DC coefficients and calculates adaptive scan residuals.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error condition if one of the specified pointers isNULL.
ippStsRangeErr	Indicates an error condition if numModelBits is greater than 15.