ReconstructLumaIntra8x8MB_H264, ReconstructLumaIntra8x8

Reconstruct 8X8 intra luma macroblock for high profile.

Syntax

IppStatus ippiReconstructLumaIntra8x8MB_H264_16s8u_C1R(Ipp16s** ppSrcDstCoeff, Ipp8u* pSrcDstYPlane, Ipp32s srcDstYStep, IppIntra8x8PredMode_H264* pMBOIntraTypes, Ipp32u cbp8x8, Ipp32s QP, Ipp8u edgeType, const Ipp16s* pQuantTable, Ipp8u bypassFlag);

IppStatus ippiReconstructLumaIntra8x8_H264High_32s16u_IP1R(const IppiReconstructHighMB_32s16u* pReconstructInfo, IppIntra8x8PredMode_H264* pMBIntraTypes, Ipp32u edgeType);

Parameters

ppSrcDstCoeff	Pointer to the order of 8x8 blocks of residual coefficients for this macroblock, which are taken as a result of Huffman decoding (8x8 luma blocks, if the block is not zero-filled) in the same order as is shown in Figure 6‑11 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 current Y-plane.
srcDstStep	Y-plane step.
pMBIntraTypes	Array of Intra_8x8 luma prediction modes for each subblock. pMBIntraTypes[i] is defined for subblocks (0 ≤ i < 4) as described in 8.3.2.1 of [ITUH264].
cbp8x8	Coded block pattern. If cbp8x8 & (1<<(1+i)) is not equal to 0 (0 ≤ i < 4), i-th 8x8 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 8x8 intra prediction, edgeType&IPPVC_TOP_EDGE must be non-zero. If the left macroblock is not available for 8x8 intra prediction, edgeType&IPPVC_LEFT_EDGE must be non-zero. If the upper-left macroblock is not available for 8x8 intra prediction, edgeType&IPPVC_TOP_LEFT_EDGE must be non-zero. If the upper-right macroblock is not available for 8x8 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 ippiReconstructLumaIntra8x8MB_H264_16s8u_C1R and ippiReconstructLumaIntra8x8_H264High_32s16u_IP1R are declared in the ippvc.h file. These functions reconstruct 8x8 intra luma macroblock for high profile. The process for each 8x8 block in the same order as shown in Figure 6-11 of [ITUH264] is described below:

Performs scaling, integer inverse transformation, and shift for a 8x8 block in accordance with 8.5.11 of [ITUH264].
Performs intra prediction for a 8x8 luma component in accordance with 8.3.2 of [ITUH264].
Performs adding of a 16x16 inter prediction block and a 16x16 residual block in accordance with 8-298 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.

ReconstructLumaIntra8x8MB_H264, ReconstructLumaIntra8x8_H264High

Syntax

Parameters

Description

Return Values