Intel® IPP Quick Reference

Quick ReferenceMDCTInv_AACMaps time-frequency domain signal into time domain and generates 1024 reconstructed 16-bitsigned little-endian PCM samples.IppStatus ippsMDCTInv_AAC_32s16s(Ipp32s* psrcspectralcoefs, Ipp16s*pdstpcmaudioout, Ipp32s* psrcdstoverlapaddbuf, int winsequence, intwinshape, int prevwinshape, int pcmmode);MPEG-4 AAC PrimitivesDecodeMainHeader_AACGets main header information and main layer information from bit stream.IppStatus ippsDecodeMainHeader_AAC(Ipp8u** ppBitStream, int* pOffset,IppAACMainHeader* pAACMainHeader, int channelNum, intmonoStereoFlag);DecodeExtensionHeader_AACGets extension header information and extension layer information from bit stream.IppStatus ippsDecodeExtensionHeader_AAC(Ipp8u** ppBitStream, int*pOffset, IppAACExtHeader* pAACExtHeader, int monoStereoFlag, intthislayerstereo, int monoLayerFlag, int preStereoMaxSfb, inthightstMonoMaxSfb, int winSequence);DecodePNS_AACImplements perceptual noise substitution (PNS) coding within individual channel stream (ICS).IppStatus ippsDecodePNS_AAC_32s(Ipp32s* pSrcDstSpec, int*pSrcDstLtpFlag, Ipp8u* pSfbCb, Ipp16s* pScaleFactor, int maxSfb, intnumWinGrp, int* pWinGrpLen, int samplingFreqIndex, int winLen, int*pRandomSeed);DecodeChanPairElt_MP4_AACGets channel_pair_element from the input bitstream.IppStatus ippsDecodeChanPairElt_MP4_AAC(Ipp8u** ppBitStream, int*pOffset, IppAACIcsInfo* pIcsInfo, IppAACChanPairElt* pChanPairElt,IppAACMainHeader* pAACMainHeader, int predSfbMax, intaudioObjectType);LongTermReconstruct_AACUses Long Term Reconstruct (LTR) to reduce signal redundancy between successive codingframes.IppStatus ippsLongTermReconstruct_AAC_32s(Ipp32s* pSrcEstSpec, Ipp32s*pSrcDstSpec, int* pLtpFlag, int winSequence, int samplingFreqIndex);196