CbYCr422ToYCbCr420
Converts 4:2:2 CbYCr image to 4:2:0 YCbCr
image.
Syntax
IppStatus
ippiCbYCr422ToYCbCr420_8u_C2P3R(const Ipp8u*
pSrc
, int
srcStep
, Ipp8u*
pDst
[3], int
dstStep
[3], IppiSize
roiSize
);
IppStatus
ippiCbYCr422ToYCbCr420_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 source image ROI.
- srcStep
- Distance in bytes between starts of consecutive lines in the source image.
- 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 source and destination ROI in pixels, height and width should be multiple of 2.
Description
This function operates with ROI (see Regions of Interest in Intel
IPP).
This function converts the
4:2:2
CbYCr
two-channel image pSrc
to the 4:2:0
YCbCr
two- or three-plane image pDst
(see Table “Pixel-Order Image Formats”
and Table “Planar
Image Formats”
). The source image has the following sequence of
samples: Cb0
, Y0
, Cr0
, Y1
, Cb1
, Y2
, Cr1
, Y3
, Cb2
, ... . Three-plane destination image has the following order of
pointers: Y
-plane, Cb
-plane, Cr
-plane. Two-plane destination 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
.Return Values
- ippStsNoErr
- Indicates no error. Any other value indicates an error.
- ippStsNullPtrErr
- Indicates an error condition if any of the specified pointers isNULL.
- ippStsSizeErr
- Indicates an error condition if any field of theroiSizeis less than 2.