ReconstructLumaIntraHalf4x4MB_H264, ReconstructLumaIntraHalf4x4

Reconstruct half of 4X4 intra luma macroblock for high profile.

Syntax

IppStatus ippiReconstructLumaIntraHalf4x4MB_H264_16s8u_C1R(Ipp16s** ppSrcDstCoeff, Ipp8u* pSrcDstYPlane, Ipp32s srcDstYStep, IppIntra4x4PredMode_H264* pMBIntraTypes, Ipp32u cbp4x2, Ipp32s QP, Ipp8u edgeType, const Ipp16s* pQuantTable, Ipp8u bypassFlag);

IppStatus ippiReconstructLumaIntraHalf4x4_H264High_32s16u_IP1R(const IppiReconstructHighMB_32s16u* pReconstructInfo, const IppIntra4x4PredMode_H264* pMBIntraTypes, Ipp32u edgeType);

Parameters

ppSrcDstCoeff	Pointer to the order of 4x4 blocks of residual coefficients for this macroblock, which are taken as a result of Huffman decoding (4x4 luma blocks, if the block is not zero-filled) in the same order as is shown in Figure 6‑10 of [ITUH264]. Pointer is updated by the function and points to the blocks for the next macroblock.
pSrcDstYPlane	Pointer to the current macroblock that is reconstructed in Y-plane.
srcDstYStep	Y-plane step.
pMBIntraTypes	Array of Intra_4x4 luma prediction modes for eight subblocks. pMBIntraTypes[ i] is defined in the same way as in PredictIntra_4x4_H264 function (0 ≤ i < 8).
cbp4x2	Coded block pattern. If cbp4x2 & (1<<(1+i)) is not equal to 0 (0 ≤ i < 8), i-th 4x4 AC luma block is not zero-filled and it exists in ppSrcDstCoeff.
QP	Quantization parameter ( QP_Y in [ITUH264]). It must be within the range [0;51].
edgeType	Flag that specifies the availability of the macroblocks used for prediction. If the upper macroblock is not available for 4x4 intra prediction, edgeType&IPPVC_TOP_EDGE must be non-zero. If the left macroblock is not available for 4x4 intra prediction, edgeType&IPPVC_LEFT_EDGE must be non-zero. If the upper-left macroblock is not available for 4x4 intra prediction, edgeType&IPPVC_TOP_LEFT_EDGE must be non-zero. If the upper-right macroblock is not available for 4x4 intra prediction, edgeType&IPPVC_TOP_RIGHT_EDGE must be non-zero.
pQuantTable	Pointer to the quantization table (LevelScale(qP%6, i, j) in [ITUH264]).
bypassFlag	Flag enabling lossless coding.
pReconstructInfo	Pointer to the IppiReconstructHighMB_32s16u structure.

Description

The functions ippiReconstructLumaIntraHalf4x4MB_H264_16s8u_C1R and ippiReconstructLumaIntraHalf4x4_H264High_32s16u_IP1R are declared in the ippvc.h file. These functions reconstruct half of an intra luma macroblock for high profile. The process for eight 4x4 blocks (from 0 to 7 or from 8 to 15) in the same order as is shown in Figure 6-10 of [ITUH264] is described below:

Performs scaling, integer inverse transformation, and shift for 4x4 blocks in accordance with 8.5.10 of [ITUH264].
Performs intra prediction for 4x4 luma components in accordance with 8.3.1.2 of [ITUH264].
Performs adding of a 16x8 prediction block (eight 4x4 blocks) and a 16x8 residual block in accordance with 8-295 of [ITUH264].

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error condition if at least one of the specified pointers is NULL.
ippStsOutOfRangeErr	QP is less than 0 or greater than 51.

ReconstructLumaIntraHalf4x4MB_H264, ReconstructLumaIntraHalf4x4_H264High

Syntax

Parameters

Description

Return Values