Portability	non-portable
Stability	experimental
Maintainer	xanxys@gmail.com

Sound.Pulse.Simple

Description

Binding to PulseAudio Simple API

example(output 440Hz sine wave for 10 seconds):

  main=do
      s<-simpleNew Nothing "example" Play Nothing "this is example application"
          (SampleSpec (F32 LittleEndian) 44100 1) Nothing Nothing
      simpleWrite s [sin $ 2*pi*440*(t/44100)|t<-[1..44100*10]]
      simpleDrain s
      simpleFree s

Synopsis

Documentation

simpleNew Source

Arguments

:: Maybe String	server name
-> String	client name
-> Direction	Play or Record
-> Maybe String	name of sink or source
-> String	description of client
-> SampleSpec
-> Maybe [ChannelPosition]	label channels
-> Maybe BufferAttr	buffer size, etc
-> IO Simple

Establish connection to pulseaudio server. You usually don't need to specify optional fields.

simpleFree :: Simple -> IO ()Source

Close the connection.

simpleGetLatency :: Simple -> IO Integer Source

Get current latency in microseconds.

simpleRead :: Storable a => Simple -> Int -> IO [a]Source

Read from buffer.

simpleReadRaw :: Simple -> Int -> IO ByteString Source

Read raw data from buffer.

simpleWrite :: Storable a => Simple -> [a] -> IO ()Source

Write to buffer.

simpleWriteRaw :: Simple -> ByteString -> IO ()Source

Write raw data to buffer.

simpleDrain :: Simple -> IO ()Source

block until buffer is completely consumed

simpleFlush :: Simple -> IO ()Source

Flush playback buffer

data Simple Source

data SampleSpec Source

Constructors

SampleSpec SampleFormat Int Int

format, sampling rate, #channels

Instances

Storable SampleSpec

data SampleFormat Source

Constructors

U8 Compression
S16 Endian
S24 Endian
S2432 Endian	24 bit sample in 32 bit
S32 Endian
F32 Endian

Instances

Enum SampleFormat

data Compression Source

Constructors

Raw
ALaw
MuLaw

data Endian Source

Constructors

BigEndian
LittleEndian

data Direction Source

Constructors

Play
Record

Instances

Enum Direction

data ChannelPosition Source

Constructors

ChannelMono
ChannelNormal ChannelPan
ChannelFront ChannelPan
ChannelRear ChannelPan
ChannelTopRear ChannelPan
ChannelTopFront ChannelPan
ChannelLFE	low frequency effects
ChannelSubwoofer
ChannelFrontCenterLeft	equivalent to PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER
ChannelFrontCenterRight
ChannelSideLeft
ChannelSideRight
ChannelTopCenter
ChannelAux Int

Instances

Enum ChannelPosition

data ChannelPan Source

Constructors

PanLeft
PanRight
PanCenter

data BufferAttr Source

max length, target length, prebuffer, minimum request, fragment size

Constructors

BufferAttr (Maybe Int) (Maybe Int) (Maybe Int) (Maybe Int) (Maybe Int)

Instances

Storable BufferAttr