Visible to Intel only — GUID: GUID-3500D606-F2FA-4F67-9E82-3755AA0753D1
Visible to Intel only — GUID: GUID-3500D606-F2FA-4F67-9E82-3755AA0753D1
BGRToYCbCr420
Converts a BGR image to the YCbCr image with 4:2:0 sampling format.
Syntax
IppStatus ippiBGRToYCbCr420_8u_C3P3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);
IppStatus ippiBGRToYCbCr420_8u_C3P2R(const Ipp8u* pRGB, int rgbStep, Ipp8u* pY, int yStep, Ipp8u* pCbCr, int cbCrStep, IppiSize roiSize);
IppStatus ippiBGRToYCbCr420_8u_AC4P3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);
IppStatus ippiBGRToYCbCr420_8u_AC4P2R(const Ipp8u* pRGB, int rgbStep, Ipp8u* pY, int yStep, Ipp8u* pCbCr, int cbCrStep, 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, pRGB |
Pointer to the source image ROI. |
pY |
Pointer to the image Y plane. |
srcStep, rgbStep |
Distance, in bytes, between the starting points of consecutive lines in the source image. |
yStep |
Distance, in bytes, between the starting points of consecutive lines in the image Y plane. |
pDst, pCbCr |
An array of pointers to ROI in separate planes of the destination image. |
dstStep, cbCrStep |
An array of distances, in bytes, between the starting points 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 three- or four-channel gamma-corrected B'G'R' image to the planar Y'Cb'Cr' image according to the same formulas as the function ippiRGBToYCbCr does. The difference is that ippiBGRToYCbCr420 uses 4:2:0 sampling format (see Table “Planar Image Formats” for more details).
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 operation, and returns warning message.
Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error or a warning. |
ippStsNullPtrErr |
Indicates an error condition if pSrc ( pRGB) or pDst ( pCbCr) is NULL. |
ippStsSizeErr |
Indicates an error condition if roiSize.width is less than 2 or roiSize.height is less than 2. |
ippStsDoubleSize |
Indicates a warning if roiSize has a field that is not a multiple of 2. |