API Quick Reference Guide

  • 2020
  • 09/30/2019
  • Public Content
Contents

iwsDCT

Syntax

class IwsDCTParams: public ::IwsDCTParams { public: IW_BASE_PARAMS_CONSTRUCTORS(IwsDCTParams, iwsDCT_SetDefaultParams) IwsDCTParams(IppHintAlgorithm algoMode = ippAlgHintNone); };
IW_DECL_CPP(IppStatus) iwsDCT( const IwsVector &srcVector, IwsVector &dstVector, IwTransDirection direction, const IwsDCTParams &auxParams );
Parameters
srcVector
Reference to the source vector.
dstVector
Reference to the destination vector.
direction
Transform direction.
auxParams
Reference to the auxiliary parameters structure.
Auxiliary Arguments
Argument
Default Value
Description
algoMode
ippAlgHintNone
Accuracy mode.
Description
This function applies discrete cosine transform (DCT) to the source vector.
This function supports the following features:
Feature
Support
In-place mode
Yes
64-bit sizes
No
Manual tiling
Yes
IwsTile
simple tiling
Yes
IwsTile
pipeline tiling
Yes
Return Values
ippStsNoErr
No errors.
Exception Values
ippStsDataTypeErr
The
dataType
value is illegal.
ippStsNoMemErr
Memory allocation failed.
ippStsNullPtrErr
At least one of the references (except
tile
) is
NULL
.

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