Converts data from the unsigned 8u range to the signed 16s range.
IppStatus ippiSub128_JPEG_8u16s_C1R(const Ipp8u* pSrc, int srcStep, Ipp16s* pDst, int dstStep, IppiSize roiSize);
pSrc |
Pointer to the source image ROI. |
srcStep |
Distance in bytes between starts of consecutive lines in the source image. |
pDst |
Pointer to the destination image ROI. |
dstStep |
Distance in bytes between starts of consecutive lines in the destination image. |
roiSize |
Size of the source and destination ROI in pixels. |
The function ippiSub128_JPEG is declared in the ippj.h file. It operates with ROI (see Regions of Interest in Intel IPP).
This function converts every sample of the source image ROI from the unsigned Ipp8u range [0..255] to the signed Ipp16s range [-128..127].
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error condition if one of the specified pointers is NULL. |
ippStsSizeErr |
Indicates an error condition if roiSize has a field with zero or negative value. |
ippStsStepErr |
Indicates an error condition if srcStep or dstStep has a zero or negative value. |
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