QMFDecode

Performs QMF synthesis.

Syntax

IppStatus ippsQMFDecode_RTA_32f(const Ipp32f* pSrcLow, const Ipp32f* pSrcHigh, int len, Ipp32f* pDst, IppQMFState_RTA_32f* pQMFMem);

Parameters

pSrcLow	Pointer to the input low-band vector, its length is len.
pSrcHigh	Pointer to the input high-band vector, its length is len.
len	Number of samples in input vectors.
pDst	Pointer to the output restored vector, its length is 2*len.
pQMFMem	Pointer to the QMF filter state memory.

Description

The function ippsQMFDecode_RTA is declared in the ippsc.h file.

This function decodes the input vectors with QMF synthesis filter. The QMF filter state memory must be initializes by calling the function ippsQMFInit_RTA beforehand.

Return Values

ippStsNoErr	Indicates no error.
IppStsNullPtrErr	Indicates an error when one of the specified pointers is NULL.
IppStsSizeErr	Indicates an error when len is less than or equal to 0, or is greater than 320.