Developer Reference

  • 2020
  • 10/21/2020
  • Public Content
Contents

RGBToYCrCb422

Converts 24-bit per pixel RGB image to 16-bit per pixel YCrCb image

Syntax

Case 1: Operation on pixel-order data
IppStatus ippiRGBToYCrCb422_8u_C3C2R(const Ipp8u*
pSrc
, int
srcStep
, Ipp8u*
pDst
, int
dstStep
, IppiSize
roiSize
);
Case 2: Conversion from planar to pixel-order data
IppStatus ippiRGBToYCrCb422_8u_P3C2R(const Ipp8u*
pSrc
[3], 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 for pixel-order image. An array of pointers to ROI in each separate source color planes for planar images.
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
This function operates with ROI (see Regions of Interest in Intel IPP). This function converts the gamma-corrected
R'G'B'
image
pSrc
to the
Y'Cb'Cr'
image
pDst
according to the same formulas as the function
ippiRGBToYCbCr
ippiRGBToYCbCr
does. The difference is that
ippiRGBToYCrCb422
uses
4:2:2 sampling
format for the converted image (see Table
“Pixel-Order Image Formats”
and Table
“Planar Image Formats”
for more details).
The converted buffer has the reduced bit depth of 16 bits per pixel, whereas the source buffer has 24 bit depth.
Return Values
ippStsNoErr
Indicates no error. Any other value indicates an error or a warning.
ippStsNullPtrErr
Indicates an error condition if
pSrc
or
pDst
is
NULL
.
ippStsSizeErr
Indicates an error condition if
roiSize
has a field with a zero or negative value.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.