Visible to Intel only — GUID: GUID-BD716F58-7D89-4AB8-9E40-DF71217C923D
Visible to Intel only — GUID: GUID-BD716F58-7D89-4AB8-9E40-DF71217C923D
YCbCr420ToCbYCr422_Interlace
Converts interlaced 4:2:0 YCbCr image to 4:2:2 CbYCr image.
Syntax
IppStatus ippiYCbCr420ToCbYCr422_Interlace_8u_P3C2R(const Ipp8u* pSrc[3], int srcStep[3], Ipp8u* pDst, int dstStep, 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 |
Array of pointers to the ROI in each plane for source image. |
srcStep |
Array of distances in bytes between starts of consecutive lines in each plane for 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, its width must be multiple of 2, and height must be multiple of 4. |
Description
This function operates with ROI (see Regions of Interest in Intel IPP).
This function converts the interlaced planar 4:2:0 image to the pixel-order 4:2:2 two-channel image. Three-plane source image has the following order of pointers: Y-plane, Cb-plane, Cr-plane.The destination image pDst has the following sequence of samples: Cb0, Y0, Cr0, Y1, Cb1, Y2, Cr1, Y3, Cb2, ...
The conversion is performed in accordance with the following formulas:
Yndest = Ynsrc;
Cb0(Cr0)dest = (5*Cb0(Cr0)src + 3*Cb2(Cr2)src + 4)/8;
Cb1(Cr1)dest = (7*Cb1(Cr1)src + Cb3(Cr3)src + 4)/8;
Cb2(Cr2)dest = (Cb0(Cr0)src + 7*Cb2(Cr2)src + 4)/8;
Cb3(Cr3)dest = (3*Cb1(Cr1)src + 5*Cb3(Cr3)src + 4)/8;
Return Values
ippStsNoErr |
Indicates no error. Any other value indicates an error. |
ippStsNullPtrErr |
Indicates an error condition if any of the specified pointers is NULL. |
ippStsSizeErr |
Indicates an error condition if roiSize.width is less than 2, or roiSize.height is less than 4. |
ippStsDoubleSize |
Indicates a warning if roiSize.width is not multiple of 2, or roiSize.height is not multiple of 4. |