Decode_G726

Performs decompression of the ADPCM bit-stream.

Syntax

IppStatus ippsDecode_G726_8u16s (IppsDecoderState_G726_16s* pDecMem, const Ipp8u* pSrc, Ipp16s* pDst, unsigned int len);

Parameters

pDecMem	Pointer to the memory buffer that has been initialized for G.726 ADPCM decoder.
pSrc	Pointer to the input vector that contains two, three, four, or five binary digits per byte for 16, 24, 32, or 40 Kbit/s ADPCM bit-stream, respectively.
pDst	Pointer to the 16-bit linear PCM speech output vector.
len	The length of input/output vectors.

Description

The function ippsDecode_G726 is declared in ippsc.h file. This function performs decompression of the ADPCM bit-stream input (Recommendation G.726) into 16-bit linear PCM. The input bit-stream must be ADPCM compressed on the bit rate for which the G.726 decoder was initialized to operate.

Return Values

ippStsNoErr	Indicates no error.
ippStsNullPtrErr	Indicates an error when one of the specified pointer is NULL.
ippStsBadArgErr	Indicates an error when the len is less than or equal to 0.