SynthesisDownFilterInit_SBR

Initializes downsample synthesis SBR specification structure.

Syntax

Case 1: Operation on float-point signal.

IppStatus ippsSynthesisDownFilterInit_SBR_CToR_32fc32f(IppsFilterSpec_SBR_C_32fc** ppFilterSpec, Ipp8u* pMemSpec, Ipp8u* pInitBuf);

IppStatus ippsSynthesisDownFilterInit_SBR_CToR_32f(IppsFilterSpec_SBR_C_32f** ppFilterSpec, Ipp8u* pMemSpec, Ipp8u* pInitBuf);

IppStatus ippsSynthesisDownFilterInit_SBR_RToR_32f(IppsFilterSpec_SBR_R_32f** ppFilterSpec, Ipp8u* pMemSpec, Ipp8u* pInitBuf);

Case 2: Operation on fixed-point signal.

IppStatus ippsSynthesisDownFilterInit_SBRHQ_32sc32s(IppsFilterSpec_SBR_C_32sc* pFilterSpec);

IppStatus ippsSynthesisDownFilterInit_SBRLP_32s(IppsFilterSpec_SBR_R_32s* pFilterSpec);

Parameters

ppFilterSpec

Double pointer to the downsample synthesis SBR specification structure.

pMemSpec

Pointer to the area for the downsample synthesis SBR specification structure.

pInitBuf

Pointer to the initialization buffer.

Description

These functions are declared in the ippac.h file. The functions initialize the down sample synthesis structures:

ippsSynthesisDownFilterInit_SBR_CToR_32fc32f initializes the specification structure for ippsSynthesisDownFilter_SBR_CToR_32fc32f_D2L.

ippsSynthesisDownFilterInit_SBR_CToR_32f initializes the specification structure for ippsSynthesisDownFilter_SBR_CToR_32f_D2L.

ippsSynthesisDownFilterInit_SBR_RToR_32f initializes the specification structure for ippsSynthesisDownFilter_SBR_RToR_32f_D2L.

ippsSynthesisDownFilterInit_SBRHQ_32sc32s initializes the specification structure for ippsSynthesisDownFilter_SBRHQ_32sc32s.

ippsSynthesisDownFilterInit_SBRLP_32s initializes the specification structure for ippsSynthesisDownFilter_SBRLP_32s.

AAC decoder included into IPP Samples uses the functions ippsSynthesisDownFilterInit_SBR_RToC_32f and ippsSynthesisDownFilterInit_SBR_RToR_32f in the float-point version, and functions ippsSynthesisDownFilterInit_SBRHQ_32sc32s and ippsSynthesisDownFilterInit_SBRLP_32s in the fixed-point version. See introduction to this section.

Return Values

ippStsNoErr

Indicates no error.

ippStsNullPtrErr

Indicates an error when at least one of the specified pointers is NULL.


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