FIRSRGetSize

Computes the size of the constant structure and work buffer for single-rate FIR filtering.

Syntax

Case 1: Operation on a signal that has the same data type as the coefficients

IppStatus ippsFIRSRGetSize(int tapsLen, IppDataType tapsType, int* pSpecSize, int* pBufSize);

Case 2: Operation on a signal that has a data type different from the data type of the coefficients

IppStatus ippsFIRSRGetSize32f_32fc(int tapsLen, int* pSpecSize, int* pBufSize);

ipps.h

Headers: ippcore.h, ippvm.h

Libraries: ippcore.lib, ippvm.lib

tapsLen	Length of the FIR filter.
tapsType	Data type of the coefficients. The supported values are ipp32f, ipp32fc, ipp64f, and ipp64fc.
pSpecSize	Pointer to the size of the internal constant specification structure.
pBufSize	Pointer to the size of the work buffer required for FIR filtering.

This function computes the following:

Size of the internal constant specification structure for single-rate FIR filtering. The structure can be shared between all threads of the application.
Size of the work buffer for each thread.

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when one of the specified pointers is NULL.
ippStsSizeErr	Indicates an error when the tapsLen value is less than, or equal to zero.
ippStsDataTypeErr	Indicates an error when the specified taps type is not supported.