SND_PCM_FORMAT_SIGNE(9) PCM API SND_PCM_FORMAT_SIGNE(9)NAME
snd_pcm_format_signed - Check the PCM format is signed linear
SYNOPSIS
int snd_pcm_format_signed(snd_pcm_format_t format);
ARGUMENTS
format
the format to check
RETURN
1 if the given PCM format is signed linear, 0 if unsigned linear, and a negative error code for non-linear formats.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 SND_PCM_FORMAT_SIGNE(9)
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mlib_SignalADPCM4Bits2Linear(3MLIB) mediaLib Library Functions mlib_SignalADPCM4Bits2Linear(3MLIB)NAME
mlib_SignalADPCM4Bits2Linear - adaptive differential pulse code modulation (ADPCM)
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
mlib_status mlib_SignalADPCM4Bits2Linear(mlib_s16 *pcm, const mlib_u8 *adpcm, void *state, mlib_s32 n);
DESCRIPTION
The mlib_SignalADPCM4Bits2Linear() 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 fromG.721 or G.726 32kbps 4-bit ADPCM to 16-bit linear PCM format.
PARAMETERS
The function takes the following arguments:
pcm Linear PCM sample array.
adpcm ADPCM code 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 TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO mlib_SignalADPCM2Bits2Linear(3MLIB), mlib_SignalADPCM3Bits2Linear(3MLIB), mlib_SignalADPCM5Bits2Linear(3MLIB), mlib_SignalADPCMFree(3MLIB),
mlib_SignalADPCMInit(3MLIB), mlib_SignalLinear2ADPCM2Bits(3MLIB), mlib_SignalLinear2ADPCM3Bits(3MLIB), mlib_SignalLinear2ADPCM4Bits(3MLIB),
mlib_SignalLinear2ADPCM5Bits(3MLIB), attributes(5)SunOS 5.10 9 Nov 2004 mlib_SignalADPCM4Bits2Linear(3MLIB)
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