Developer Reference

  • 2020
  • 07/15/2020
  • Public Content
Contents

YUV422ToRGB

Converts a YUV image with the 4:2:2 sampling to the RGB color model.

Syntax

Case 1: Operation on pixel-order data
IppStatus ippiYUV422ToRGB_8u_C2C3R(const Ipp8u*
pSrc
, int
srcStep
, Ipp8u*
pDst
, int
dstStep
, IppiSize
roiSize
);
Case 2: Operation on planar data with ROI
IppStatus ippiYUV422ToRGB_8u_P3R(const Ipp8u*
pSrc
[3], int
srcStep
[3], Ipp8u*
pDst
[3], int
dstStep
, IppiSize
roiSize
);
Case 3: Operation on planar data without ROI
IppStatus ippiYUV422ToRGB_8u_P3(const Ipp8u*
pSrc
[3], Ipp8u*
pDst
[3], IppiSize
imgSize
);
Case 4: Conversion from planar to pixel-order data with ROI
IppStatus ippiYUV422ToRGB_<mod>(const Ipp8u*
pSrc
[3], int
srcStep
[3], Ipp8u*
pDst
, int
dstStep
, IppiSize
roiSize
);
Supported values for
mod
:
8u_P3C3R
8u_P3AC4R
Case 5: Conversion from planar to pixel-order data without ROI
IppStatus ippiYUV422ToRGB_8u_P3C3(const Ipp8u*
pSrc
[3], Ipp8u*
pDst
, IppiSize
imgSize
);
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 buffer for pixel-order image. An array of pointers to the source image buffer in each color plane for planar image.
srcStep
Distance in bytes between starts of consecutive lines in the source image for operations with ROI. An array of three values in case of planar image.
pDst
Pointer to the destination image buffer for pixel-order image. An array of pointers to the destination image buffers in each color plane for planar image.
dstStep
Distance in bytes between starts of consecutive lines in the destination image for operations with ROI.
roiSize
Size of the source and destination ROI in pixels.
imgSize
Size of the source and destination images in pixels for operations without ROI.
Description
This function converts the
Y'U'V'
image
pSrc
to the gamma-corrected
R'G'B'
image
pDst
according to the same formulas as the function
ippiYUVToRGB
does. The difference is that
ippiYUV422ToRGB
4:2:0 sampling
the input data to be in
4:2:2 sampling
format (see Table
“Pixel-Order Image Formats”
and Table
“Planar Image Formats”
for more details).
The function
ippiYUV422ToRGB_P3AC4R
additionally creates an alpha channel in the destination image with alpha values set to zero.
Some function flavors operates with ROI (see Regions of Interest in Intel IPP ). The function flavors that do not use ROI operate on the assumption that both the source and destination images have the same size and occupy a contiguous memory area, which means that image rows are not padded with zeroes. In this case the step arguments are not needed.
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
ndicates an error condition if
roiSize
or
imgSize
has a field with a zero or negative value.

Product and Performance Information

1

Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804