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.