Evaluates four partial sums of absolute differences between current and reference 16X16 blocks.
Syntax
IppStatus ippiSAD16x16Blocks8x8_8u16u(const Ipp8u* pSrc, Ipp32s srcStep, const Ipp8u* pRef, Ipp32s refStep, Ipp16u* pDstSAD, Ipp32s mcType);
Parameters
pSrc |
Pointer to a 16x16 block in the source plane. |
srcStep |
Distance in bytes between starts of the consecutive lines in the source image. |
pRef |
Pointer to a 16x16 block in the reference plane. |
refStep |
Distance in bytes between starts of the consecutive lines in the reference image. |
pDstSAD |
Pointer to an array of size 4 to store the SAD values. |
mcType |
Reserved and must be 0. |
Description
This function is declared in the ippvc.h header file.
The function ippiSAD16x16Blocks8x8_8u16u evaluates the four partial sums of absolute differences of all the elements in the current 16x16 block and the corresponding elements in the reference 16x16 block. The result is stored in pDstSAD.
This function is used in the H.264 encoder included into Intel IPP Samples. See introduction to Motion Estimation.
Return Values
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error when at least one input pointer is NULL. |