enum snd_pcm_format_t

Overview

PCM sample format More…

#include <pcm.h>

enum snd_pcm_format_t {
    SND_PCM_FORMAT_UNKNOWN            = -1,
    SND_PCM_FORMAT_S8                 = 0,
    SND_PCM_FORMAT_U8,
    SND_PCM_FORMAT_S16_LE,
    SND_PCM_FORMAT_S16_BE,
    SND_PCM_FORMAT_U16_LE,
    SND_PCM_FORMAT_U16_BE,
    SND_PCM_FORMAT_S24_LE,
    SND_PCM_FORMAT_S24_BE,
    SND_PCM_FORMAT_U24_LE,
    SND_PCM_FORMAT_U24_BE,
    SND_PCM_FORMAT_S32_LE,
    SND_PCM_FORMAT_S32_BE,
    SND_PCM_FORMAT_U32_LE,
    SND_PCM_FORMAT_U32_BE,
    SND_PCM_FORMAT_FLOAT_LE,
    SND_PCM_FORMAT_FLOAT_BE,
    SND_PCM_FORMAT_FLOAT64_LE,
    SND_PCM_FORMAT_FLOAT64_BE,
    SND_PCM_FORMAT_IEC958_SUBFRAME_LE,
    SND_PCM_FORMAT_IEC958_SUBFRAME_BE,
    SND_PCM_FORMAT_MU_LAW,
    SND_PCM_FORMAT_A_LAW,
    SND_PCM_FORMAT_IMA_ADPCM,
    SND_PCM_FORMAT_MPEG,
    SND_PCM_FORMAT_GSM,
    SND_PCM_FORMAT_SPECIAL            = 31,
    SND_PCM_FORMAT_S24_3LE            = 32,
    SND_PCM_FORMAT_S24_3BE,
    SND_PCM_FORMAT_U24_3LE,
    SND_PCM_FORMAT_U24_3BE,
    SND_PCM_FORMAT_S20_3LE,
    SND_PCM_FORMAT_S20_3BE,
    SND_PCM_FORMAT_U20_3LE,
    SND_PCM_FORMAT_U20_3BE,
    SND_PCM_FORMAT_S18_3LE,
    SND_PCM_FORMAT_S18_3BE,
    SND_PCM_FORMAT_U18_3LE,
    SND_PCM_FORMAT_U18_3BE,
    SND_PCM_FORMAT_G723_24,
    SND_PCM_FORMAT_G723_24_1B,
    SND_PCM_FORMAT_G723_40,
    SND_PCM_FORMAT_G723_40_1B,
    SND_PCM_FORMAT_DSD_U8,
    SND_PCM_FORMAT_DSD_U16_LE,
    SND_PCM_FORMAT_DSD_U32_LE,
    SND_PCM_FORMAT_DSD_U16_BE,
    SND_PCM_FORMAT_DSD_U32_BE,
    SND_PCM_FORMAT_LAST               = SND_PCM_FORMAT_DSD_U32_BE,
    SND_PCM_FORMAT_S16                = SND_PCM_FORMAT_S16_LE,
    SND_PCM_FORMAT_U16                = SND_PCM_FORMAT_U16_LE,
    SND_PCM_FORMAT_S24                = SND_PCM_FORMAT_S24_LE,
    SND_PCM_FORMAT_U24                = SND_PCM_FORMAT_U24_LE,
    SND_PCM_FORMAT_S32                = SND_PCM_FORMAT_S32_LE,
    SND_PCM_FORMAT_U32                = SND_PCM_FORMAT_U32_LE,
    SND_PCM_FORMAT_FLOAT              = SND_PCM_FORMAT_FLOAT_LE,
    SND_PCM_FORMAT_FLOAT64            = SND_PCM_FORMAT_FLOAT64_LE,
    SND_PCM_FORMAT_IEC958_SUBFRAME    = SND_PCM_FORMAT_IEC958_SUBFRAME_LE,
};

Detailed Documentation

PCM sample format

Enum Values

SND_PCM_FORMAT_UNKNOWN

Unknown

SND_PCM_FORMAT_S8

Signed 8 bit

SND_PCM_FORMAT_U8

Unsigned 8 bit

SND_PCM_FORMAT_S16_LE

Signed 16 bit Little Endian

SND_PCM_FORMAT_S16_BE

Signed 16 bit Big Endian

SND_PCM_FORMAT_U16_LE

Unsigned 16 bit Little Endian

SND_PCM_FORMAT_U16_BE

Unsigned 16 bit Big Endian

SND_PCM_FORMAT_S24_LE

Signed 24 bit Little Endian using low three bytes in 32-bit word

SND_PCM_FORMAT_S24_BE

Signed 24 bit Big Endian using low three bytes in 32-bit word

SND_PCM_FORMAT_U24_LE

Unsigned 24 bit Little Endian using low three bytes in 32-bit word

SND_PCM_FORMAT_U24_BE

Unsigned 24 bit Big Endian using low three bytes in 32-bit word

SND_PCM_FORMAT_S32_LE

Signed 32 bit Little Endian

SND_PCM_FORMAT_S32_BE

Signed 32 bit Big Endian

SND_PCM_FORMAT_U32_LE

Unsigned 32 bit Little Endian

SND_PCM_FORMAT_U32_BE

Unsigned 32 bit Big Endian

SND_PCM_FORMAT_FLOAT_LE

Float 32 bit Little Endian, Range -1.0 to 1.0

SND_PCM_FORMAT_FLOAT_BE

Float 32 bit Big Endian, Range -1.0 to 1.0

SND_PCM_FORMAT_FLOAT64_LE

Float 64 bit Little Endian, Range -1.0 to 1.0

SND_PCM_FORMAT_FLOAT64_BE

Float 64 bit Big Endian, Range -1.0 to 1.0

SND_PCM_FORMAT_IEC958_SUBFRAME_LE

IEC-958 Little Endian

SND_PCM_FORMAT_IEC958_SUBFRAME_BE

IEC-958 Big Endian

SND_PCM_FORMAT_MU_LAW

Mu-Law

SND_PCM_FORMAT_A_LAW

A-Law

SND_PCM_FORMAT_IMA_ADPCM

Ima-ADPCM

SND_PCM_FORMAT_MPEG

MPEG

SND_PCM_FORMAT_GSM

GSM

SND_PCM_FORMAT_SPECIAL

Special

SND_PCM_FORMAT_S24_3LE

Signed 24bit Little Endian in 3bytes format

SND_PCM_FORMAT_S24_3BE

Signed 24bit Big Endian in 3bytes format

SND_PCM_FORMAT_U24_3LE

Unsigned 24bit Little Endian in 3bytes format

SND_PCM_FORMAT_U24_3BE

Unsigned 24bit Big Endian in 3bytes format

SND_PCM_FORMAT_S20_3LE

Signed 20bit Little Endian in 3bytes format

SND_PCM_FORMAT_S20_3BE

Signed 20bit Big Endian in 3bytes format

SND_PCM_FORMAT_U20_3LE

Unsigned 20bit Little Endian in 3bytes format

SND_PCM_FORMAT_U20_3BE

Unsigned 20bit Big Endian in 3bytes format

SND_PCM_FORMAT_S18_3LE

Signed 18bit Little Endian in 3bytes format

SND_PCM_FORMAT_S18_3BE

Signed 18bit Big Endian in 3bytes format

SND_PCM_FORMAT_U18_3LE

Unsigned 18bit Little Endian in 3bytes format

SND_PCM_FORMAT_U18_3BE

Unsigned 18bit Big Endian in 3bytes format

SND_PCM_FORMAT_S16

Signed 16 bit CPU endian

SND_PCM_FORMAT_U16

Unsigned 16 bit CPU endian

SND_PCM_FORMAT_S24

Signed 24 bit CPU endian

SND_PCM_FORMAT_U24

Unsigned 24 bit CPU endian

SND_PCM_FORMAT_S32

Signed 32 bit CPU endian

SND_PCM_FORMAT_U32

Unsigned 32 bit CPU endian

SND_PCM_FORMAT_FLOAT

Float 32 bit CPU endian

SND_PCM_FORMAT_FLOAT64

Float 64 bit CPU endian

SND_PCM_FORMAT_IEC958_SUBFRAME

IEC-958 CPU Endian