Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference
YCbCr422ToYCbCr411
Converts YCbCr image from 4:2:2 sampling format to 4:1:1 format.
Syntax
Case 1: Operation on planar data
IppStatus ippiYCbCr422ToYCbCr411_8u_P3R(const Ipp8u* pSrc[3], int srcStep[3], Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);
IppStatus ippiYCbCr422ToYCbCr411_8u_P3P2R(const Ipp8u* pSrc[3], int srcStep[3], Ipp8u* pDstY, int dstYStep, Ipp8u* pDstCbCr, int dstCbCrStep, IppiSize roiSize);
Case 2: Conversion from pixel-order to planar data
IppStatus ippiYCbCr422ToYCbCr411_8u_C2P3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst[3], int dstStep[3], IppiSize roiSize);
IppStatus ippiYCbCr422ToYCbCr411_8u_C2P2R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDstY, int dstYStep, Ipp8u* pDstCbCr, int dstCbCrStep, 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 ROI in the pixel-order source image. Array of pointers to the ROI in each plane of the planar source image. |
srcStep |
Distance in bytes between starts of consecutive lines in the source image. Array of distance values for the source image planes. |
pDst |
Array of pointers to the ROI in each plane for a three-plane destination image. |
dstStep |
Array of distances in bytes between starts of consecutive lines in each plane for a three-plane destination image. |
pDstY |
Pointer to the ROI in the luminance plane for a two-plane destination image. |
dstYStep |
Distance in bytes between starts of consecutive lines in the luminance plane of a destination image. |
pDstCbCr |
Pointer to the ROI in the interleaved chrominance plane for a two-plane destination image. |
dstCbCrStep |
Distance in bytes between starts of consecutive lines in the chrominance plane of a destination image. |
roiSize |
Size of the ROI in pixels. |
Description
This function operates with ROI (see Regions of Interest in Intel IPP).
This function converts the 4:2:2 image pSrc to the 4:1:1 image. The source image can be two-channel or three-plane (see Table “Pixel-Order Image Formats” for more details), destination image always is planar with two or three planes (see Table “Planar Image Formats” for more details). The two-plane image contains luminance samples Y0, Y1, Y2, .. in the first plane pDstY, and interleaved chrominance samples Cb0, Cr0, Cb1, Cr1, … in the second plane pDstCbCr.
The value of the fields of the roiSize have certain limitations:
its width should be multiple of 4 and cannot be less than 4 for operation on two-channel images;
its width should be multiple of 4 and cannot be less than 4, and its height should be multiple of 2 and can not be less than 2 for three-plane to two-plane image conversion;
both height and width should be multiple of 2 and cannot be less than 2 for operation on three-plane images.
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 corresponding fileds of the roiSize is less than specified above values. |