YCbCr420To422_Interlace
Converts interlaced YCbCr image from 4:2:0 sampling format to 4:2:2 format.
Syntax
IppStatus ippiYCbCr420To422_Interlace_8u_P3R(const Ipp8u*
pSrc
[3], int
srcStep
[3], Ipp8u*
pDst
[3], int
dstStep
[3], 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
- Array of pointers to the ROI in each plane for destination image.
- dstStep
- Array of distances in bytes between starts of consecutive lines in each plane for 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
).
The conversion is performed in accordance with the following formulas:
Yn
dest
= Yn
src
;
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 isNULL.
- ippStsSizeErr
- Indicates an error condition ifroiSize.widthis less than 2, orroiSize.heightis less than 4.
- ippStsDoubleSize
- Indicates a warning ifroiSize.widthis not multiple of 2, orroiSize.heightis not multiple of 4.