Visible to Intel only — GUID: GUID-3D0F3E48-D5A4-49AB-A3EF-E188959A55C9
Visible to Intel only — GUID: GUID-3D0F3E48-D5A4-49AB-A3EF-E188959A55C9
RGBToYCrCb420
Converts an RGB image to the YCrCb image with 4:2:0 sampling format.
Syntax
IppStatus ippiRGBToYCrCb420_8u_AC4P3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);
Include Files
ippcc.h
Domain Dependencies
Headers: ippcore.h, ippvm.h, ipps.h, ippi.h
Libraries: ippcore.lib, ippvm.lib, ipps.lib, ippi.lib
Parameters
pSrc |
Pointer to the source image ROI. |
srcStep |
Distance in bytes between starts of consecutive lines in the source image. |
pDst |
Array of pointers to ROI in separate planes of the destination image. |
dstStep |
Array of distances in bytes between starts of consecutive lines in the destination image planes. |
roiSize |
Size of the source and destination ROI in pixels. |
Description
This function operates with ROI (see Regions of Interest in Intel IPP).
This function converts a four-channel gamma-corrected R'G'B' image pSrc to the planar Y'Cr'Cb' image pDst with the 4:2:0 sampling (see Table “Planar Image Formats” for more details). The conversion is performed according to the same formulas as the function ippiRGBToYCbCr does.
roiSize.width and roiSize.height should be multiples of 2. If not the function reduces their original values to the nearest multiples of 2, performs the operation, and returns a warning message.
Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error or a warning. |
ippStsNullPtrErr |
Indicates an error condition if pSrc or pDst is NULL. |
ippStsSizeErr |
Indicates an error condition if roiSize has a field with a zero or negative value. |
ippStsDoubleSize |
Indicates a warning if roiSize has a field that is not a multiple of 2. |