Developer Reference

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

ResizeGetSrcRoi

Computes the ROI of the source image for resizing by tile processing.

Syntax

Single precision
IppStatus ippiResizeGetSrcRoi_<mod>(
const
IppiResizeSpec_32f*
pSpec
, IppiPoint
dstRoiOffset
, IppiSize
dstRoiSize
, IppiPoint*
srcRoiOffset
, IppiSize*
srcRoiSize
);
Supported values for
mod
:
8u
16u
16s
32f
Double precision
IppStatus ippiResizeGetSrcRoi_64f(
const
IppiResizeSpec_64f*
pSpec
, IppiPoint
dstRoiOffset
, IppiSize
dstRoiSize
, IppiPoint*
srcRoiOffset
, IppiSize*
srcRoiSize
);
Processing images with platform-aware functions
IppStatus ippiResizeGetSrcRoi_L(
const
IppiResizeSpec*
pSpec
, IppiPointL
dstRoiOffset
, IppiSizeL
dstRoiSize
, IppiPointL*
srcRoiOffset
, IppiSizeL*
srcRoiSize
);
Include Files
ippi.h
Flavors with the
_L
suffix:
ippi_l.h
Domain Dependencies
Headers:
ippcore.h
,
ippvm.h
,
ipps.h
Libraries:
ippcore.lib
,
ippvm.lib
,
ipps.lib
Parameters
pSpec
Pointer to the spec structure for the resize filter.
dstRoiOffset
Offset of the tiled destination image ROI.
dstRoiSize
Size of the tiled destination image ROI.
srcRoiOffset
Offset of the source image ROI.
srcRoiSize
Pointer to the size of the source image ROI.
Description
This function computes the ROI of the processed source image using the processed ROI of the destination image for the corresponding resize transform by tile processing. The
pSpec
parameter defines the resize algorithm parameters. Prior to using the
ippiResizeGetSrcRoi
function, you need to initialize the
pSpec
parameter by calling one of the following functions:
ippiResizeNearestInit
,
ippiResizeLinearInit
,
ippiResizeCubicInit
,
ippiResizeLanczosInit
, or
ippiResizeSuperInit
.
If the destination ROI size exceeds the image origin, the source ROI will be obtained for an intersection of the destination ROI and image origin.
Return Values
ippStsNoErr
Indicates no error.
ippStsNullPtrErr
Indicates an error if one of the specified pointers is
NULL
.
ippStsContextMatchErr
Indicates an error if pointer to the spec structure is invalid.
ippStsOutOfRangeErr
Indicates an error if the destination image offset point is outside the destination image origin.
ippStsSizeWrn
Indicates a warning if the destination ROI exceeds the destination image origin.

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