DecodeDCIntra

Decodes DC coefficient for intra coded block.

Syntax

IppStatus ippiDecodeDCIntra_H263_1u16s(Ipp8u** ppBitStream, int* pBitOffset, Ipp16s* pDC);

Parameters

ppBitStream	Pointer to pointer to the current byte in the bitstream buffer. **ppBitStream is updated by the function.
pBitOffset	Pointer to the bit position in the byte pointed by *ppBitStream. Valid within the range 0 to 7. pBitOffset is updated by the function.
pDC	Pointer to the output coefficient.

Description

The function ippiDecodeDCIntra_H263_1u16s is declared in the ippvc.h header file. This function performs fixed length decoding of the DC coefficient for one intra coded block. Intra DC decoding process is specified in [ITUH263], subclause 5.4.1.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error condition if at least one of the specified pointers is NULL.
ippStsBitOffsetErr	Indicates an error condition if *pBitOffset is out of the range [0, 7].
ippStsVLCErr	Indicates an error condition if an illegal code is detected through the DC stream processing.