Gets the AAC ADIF format header.
Syntax
IppStatus ippsUnpackADIFHeader_AAC(Ipp8u** ppBitStream, IppAACADIFHeader* pADIFHeader, IppAACPrgCfgElt* pPrgCfgElt, int prgCfgEltMax);
Parameters
ppBitStream |
Double pointer to the current byte before the ADIF header. |
pADIFHeader |
Pointer to the IppACCADIFHeader structure. |
pPrgCfgElt |
Pointer to the IppAACPrgCfgElt structure. There must be prgCfgEltMax elements in the buffer. |
prgCfgEltMax |
Maximum program configure element number. Must be within the range of [1, 16]. |
Description
This function is declared in the ippac.h file. The function gets the AAC ADIF format header, including program configuration elements from the input bitstream. See Table 6.2, and 6.21. of ISO/IEC 13818 - 7: 1997.
Return Values
ippStsNoErr |
Indicates no error. |
ippStsNullPtrErr |
Indicates an error when at least one of the pointers ppBitStream, pADIFHeader, pPrgCfgElt, or ppBitStream is NULL. |
ippStsAacPrgNumErr |
Indicates an error when the decoded pADIFHeader-> numPrgCfgElt > prgCfgEltMax, or prgCfgEltMax is outside the range of [1,IPP_AAC_MAX_ELT_NUM]. |
Note
pADIFHeader->numPrgCfgElt is the number directly unpacked from bitstream plus 1.