mlib_SignalLinear2ADPCM5Bits

- adaptive differential pulse code modulation (ADPCM)

Synopsis

cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>

mlib_status mlib_SignalLinear2ADPCM5Bits(mlib_u8 *adpcm,
     const mlib_s16 *pcm, void *state, mlib_s32 n);

Description

The mlib_SignalLinear2ADPCM5Bits() function performs adaptive differential pulse code modulation (ADPCM) in compliance with the ITU (former CCITT) G.721, G.723, and G.726 specifications. It converts data from 16-bit linear PCM to G.723 or G.726 40kbps 5-bit ADPCM format.

Parameters

The function takes the following arguments:

adpcm

ADPCM code array.

pcm

Linear PCM sample array.

state

Internal structure of the codec.

n

Number of samples in the source array.

Return Values

The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.

Attributes

See attributes(5) for descriptions of the following attributes:

See Also

mlib_SignalADPCM2Bits2Linear(3MLIB), mlib_SignalADPCM3Bits2Linear(3MLIB), mlib_SignalADPCM4Bits2Linear(3MLIB), mlib_SignalADPCM5Bits2Linear(3MLIB), mlib_SignalADPCMFree(3MLIB), mlib_SignalADPCMInit(3MLIB), mlib_SignalLinear2ADPCM2Bits(3MLIB), mlib_SignalLinear2ADPCM3Bits(3MLIB), mlib_SignalLinear2ADPCM4Bits(3MLIB), attributes(5)