Computes the differences between input sample and predictor for all lines but the first.
IppStatus ippiDiffPredRow_JPEG_16s_C1(const Ipp16s* pSrc, const Ipp16s* pPrevRow, Ipp16s* pDst, int width, int predictor);
pSrc |
Pointer to the row of samples. |
pPrevRow |
Pointer to the adjacent row of samples just above the current row. |
pDst |
Pointer to the row of calculated differences. |
width |
Row width in elements; has always the same value for all rows. |
predictor |
Selected predictor, should be in the range [1, 7]. |
The function ippiDiffPredRow_JPEG is declared in the ippj.h file. This function operates on all rows of samples except the first row at the start of the scan and at the beginning of the restart interval. It computes modulo 216 differences between input samples pSrc and the specified predictor predictor. The first sample of the row uses the sample from the row pPrevRow above as a predictor.
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error condition if one of the specified pointers is NULL. |
ippStsSizeErr |
Indicates an error condition if the width parameter has a negative value. |
ippStsBadArgrErr |
Indicates an error condition if predictor has an illegal value. |
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