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.