QMFEncode

Performs QMF analysis.

Syntax

IppStatus ippsQMFEncode_RTA_32f(const Ipp32f* pSrc, int len, Ipp32f* pDstLow, Ipp32f* pDstHigh, IppQMFState_RTA_32f* pQMFMem);

Parameters

pSrc	Pointer to the input vector, its length is len.
len	Number of samples in input vectors.
pDstLow	Pointer to the output low-band vector, its length is len/2.
pDstHigh	Pointer to the output high-band vector, its length is len/2.
pQMFMem	Pointer to the QMF filter state memory.

Description

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

This function encodes the input vectors with QMF analysis 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, or is not even number.