Visible to Intel only — GUID: GUID-B2839C02-C227-4D2E-AC28-327F3801B87D
Visible to Intel only — GUID: GUID-B2839C02-C227-4D2E-AC28-327F3801B87D
DCTInvGetSize
Computes the size of all buffers required for the inverse DCT.
Syntax
IppStatus ippsDCTInvGetSize_32f(int len, IppHintAlgorithm hint, int* pSpecSize, int* pSpecBufferSize, int* pBufferSize);
IppStatus ippsDCTInvGetSize_64f(int len, IppHintAlgorithm hint, int* pSpecSize, int* pSpecBufferSize, int* pBufferSize);
Include Files
ipps.h
Domain Dependencies
Headers: ippcore.h, ippvm.h
Libraries: ippcore.lib, ippvm.lib
Parameters
len |
Number of samples in the DCT. |
hint |
This parameter is deprecated. Set the value to ippAlgHintNone. |
pSpecSize |
Pointer to the size of the forward DCT specification structure. |
pSpecBufferSize |
Pointer to the size of the work buffer for the initialization function. |
pBufferSize |
Pointer to the size of the forward DCT work buffer. |
Description
This function computes in bytes the size pSpecSize of the external buffer for the inverse DCT structure with the following parameters: the transform len, and the specific code hint. Additionally the function computes the size pSpecBufferSize of the work buffer for the initialization function ippsDCTInvInit and the size pBufferSize of the work buffer for the function ippsDCTInv.
The function ippsDCTInvGetSize must be called prior to them.
Return Values
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error if one of the specified pointers is NULL. |
ippStsSizeErr |
Indicates an error when len is less than or equal to 0. |