Content-type: text/html Man page of mlib_SignalLinear2ADPCM4Bits

mlib_SignalLinear2ADPCM4Bits

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
Index Return to Main Contents
 

NAME

mlib_SignalLinear2ADPCM4Bits - adaptive differential pulse code modulation (ADPCM)  

SYNOPSIS

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

mlib_status mlib_SignalLinear2ADPCM4Bits(mlib_u8 *adpcm,
    const mlib_s16 *pcm, void *state, mlib_s32 n);

 

DESCRIPTION

The mlib_SignalLinear2ADPCM4Bits() 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.721 or G.726 32kbps 4-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:

ATTRIBUTE TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

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_SignalLinear2ADPCM5Bits(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:27 GMT, October 02, 2010