AdaptiveCodebookDecode

Decodes the adaptive codebook vector.

Syntax

IppStatus ippsAdaptiveCodebookDecode_AMRWBE_16s(Ipp32s valAdptIndex, Ipp16s* pSrcDstExcitation, Ipp16s* pSrcDstPitchLag, Ipp16s* pSrcDstFracPitchLag, Ipp16s* pSrcDstPitchLagBounds, int subFrame, Ipp32s bfi, ipp32s pitchOffset);

Parameters

valAdptIndex	Adaptive codebook index.
pSrcDstExcitation	Pointer to the 321-element excitation vector.
pSrcDstPitchLag	Pointer to the integral pitch lag.
pSrcDstFracPitchLag	Pointer to the fractional pitch lag obtained during the adaptive codebook search.
pPitchLagBounds	Pointer to the previous integral pitch lag bounds.
subFrame	Subframe number.
bfi	Bad frame indicator. Value "0" signifies a good frame; any other value signifies a bad frame.
pitchOffset	Offset for the pitch adjustment, value range (-17, 17).

Description

The ippsAdaptiveCodebookDecode_AMRWBE function is declared in ippsc.h file. This function is similar to the function ippsAdaptiveCodebookDecode_AMRWB but has additional parameter pitchOffset that controls the adjustment of the search ranges. If value of pitchOffset = 0, both functions are identical.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when one of the specified pointer is NULL.
ippStsSizeErr	Indicates an error when pitchOffset is out of the range (-17, 17), or when mode has an illegal value.