ResizeGetBufferSize
Computes the size of the external buffer for image resizing.
Syntax
Case 1: Single precision
IppStatus ippiResizeGetBufferSize_<mod>(
const
IppiResizeSpec_32f*
pSpec
, IppiSize
dstSize
, Ipp32u
numChannels
, int*
pBufSize
);
Supported values for
mod
:
8u |
16u |
16s |
32f |
Case 2: Double precision
IppStatus ippiResizeGetBufferSize_64f(
const
IppiResizeSpec_64f*
pSpec
, IppiSize
dstSize
, Ipp32u
numChannels
, int*
pBufSize
);
Case 3: Processing images with platform-aware functions
IppStatus ippiResizeGetBufferSize_L(
const
IppiResizeSpec*
pSpec
, IppiSizeL
dstSize
, Ipp32u
numChannels
, IppSizeL*
pBufSize
);
Case 4: Processing images with threading layer (TL) functions
IppStatus ippiResizeGetBufferSize_LT(
const
IppiResizeSpec_LT*
pSpec
, IppSizeL*
pBufSize
);
Include Files
ippi.h
Flavors with the
_LT
suffix:
ippi_tl.h
Flavors with the
_L
suffix:
ippi_l.h
Domain Dependencies
Flavors declared in
ippi.h
:
Headers:
ippcore.h
,
ippvm.h
,
ipps.h
Libraries:
ippcore.lib
,
ippvm.lib
,
ipps.lib
Flavors declared in
ippi_tl.h
:
Libraries:
ippcore.lib
,
ippvm.lib
,
ipps.lib
,
ippi.lib
,
ippcore_tl.lib
,
ippi_tl.lib
Parameters
- pSpec
- Pointer to the spec structure for the resize filter.
- dstSize
- Size in pixels of the destination image.
- numChannels
- Number of channels, possible values: 1, 3, or 4.
- pBufSize
- Pointer to the size, in bytes, of the external buffer.
Description
This function computes the size of the external buffer for image resizing. The
pSpec
parameter defines the resize algorithm parameters. Prior to using the
ippiResizeGetBufferSize
function, you need to initialize the
pSpec
parameter by calling one of the following functions:
ippiResizeNearestInit
,
ippiResizeLinearInit
,
ippiResizeCubicInit
,
ippiResizeLanczosInit
, and
ippiResizeSuperInit
.
Return Values
- ippStsNoErr
- Indicates no error.
- ippStsNullPtrErr
- Indicates an error ifpBufferSizepointer isNULL.
- ippStsNoOperation
- Indicates a warning if width or height of the destination image is equal to zero.
- ippStsContextMatchErr
- Indicates an error if pointer to the spec structure is invalid.
- ippStsNumChannelErr
- Indicates an error if the value ofnumChannelsis illegal.
- ippStsSizeErr
- Indicates an error condition If width or height of the destination image is negative.
- ippStsSizeWrn
- Indicates a warning if the destination image size is more than the destination image origin size.
- ippStsExceededSizeErr
- Indicates an error If at least one of the computed values exceeds maximum ofIppSizeLtype positive value (the size of one of the processed images is too large).