RGBToCbYCr422, RGBToCbYCr422Gamma
Convert 24-bit per pixel RGB image to 16-bit per pixel CbYCr image.
Syntax
IppStatus ippiRGBToCbYCr422_8u_C3C2R(const Ipp8u*
pSrc
, int
srcStep
, Ipp8u*
pDst
, int
dstStep
, IppiSize
roiSize
);
IppStatus ippiRGBToCbYCr422Gamma_8u_C3C2R(const Ipp8u*
pSrc
, int
srcStep
, 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
- Pointer to the source image ROI.
- srcStep
- Distance in bytes between starts of consecutive lines in 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.
Description
These functions operate with ROI (see
Regions of Interest in Intel IPP
).
The function
ippiRGBToCbYCr422
converts the gamma-corrected
R'G'B'
image
pSrc
to the
Cb'Y'Cr'
image
pDst
according to the same formulas as the function
ippiRGBToYCbCr
does.
The function
ippiRGBToCbYCr422Gamma
performs gamma-correction of the source
RGB
image
pSrc
according to the same formula as the function
ippiGammaFwd
does, and then converts it to the
Cb'Y'Cr'
image
pDst
according to the same formulas as the function
ippiRGBToYCbCr
does.
The functions
ippiRGBToCbYCr422
and
ippiRGBToCbYCr422Gamma
use
4:2:2 sampling
format for the converted image.
A
CbYCr
image has the following sequence of bytes:
Cb0Y0Cr0Y1
,
Cb1Y2Cr1Y3
, ....
Return Values
- ippStsNoErr
- Indicates no error. Any other value indicates an error or a warning.
- ippStsNullPtrErr
- Indicates an error condition ifpSrcorpDstisNULL.
- ippStsSizeErr
- Indicates an error condition ifroiSizehas a field with a zero or negative value.