alsa-0.2: Binding to the ALSA Library API. Source code Contents Index

Sound.Alsa

Synopsis

data SampleFmt = SampleFmtLinear16BitSignedLE | SampleFmtMuLaw8Bit type SampleFreq = Int data SoundFmt = SoundFmt { sampleFmt :: SampleFmt sampleFreq :: SampleFreq numChannels :: Int } data SoundSource handle = SoundSource { soundSourceFmt :: SoundFmt soundSourceOpen :: IO handle soundSourceClose :: handle -> IO () soundSourceStart :: handle -> IO () soundSourceStop :: handle -> IO () soundSourceRead :: handle -> Ptr () -> Int -> IO Int } data SoundSink handle = SoundSink { soundSinkFmt :: SoundFmt soundSinkOpen :: IO handle soundSinkClose :: handle -> IO () soundSinkWrite :: handle -> Ptr () -> Int -> IO () soundSinkStart :: handle -> IO () soundSinkStop :: handle -> IO () } withSoundSource :: SoundSource h -> (h -> IO a) -> IO a withSoundSourceRunning :: SoundSource h -> h -> IO a -> IO a withSoundSink :: SoundSink h -> (h -> IO a) -> IO a withSoundSinkRunning :: SoundSink h -> h -> IO a -> IO a soundFmtMIME :: SoundFmt -> String audioBytesPerSample :: SoundFmt -> Int audioBytesPerFrame :: SoundFmt -> Int soundSourceBytesPerFrame :: SoundSource h -> Int soundSinkBytesPerFrame :: SoundSink h -> Int soundSourceReadBytes :: SoundSource h -> h -> Ptr () -> Int -> IO Int soundSinkWriteBytes :: SoundSink h -> h -> Ptr () -> Int -> IO () copySound :: SoundSource h1 -> SoundSink h2 -> Int -> IO () alsaSoundSource :: String -> SoundFmt -> SoundSource Pcm alsaSoundSink :: String -> SoundFmt -> SoundSink Pcm fileSoundSource :: FilePath -> SoundFmt -> SoundSource Handle fileSoundSink :: FilePath -> SoundFmt -> SoundSink Handle

Documentation

data SampleFmt Source

Constructors SampleFmtLinear16BitSignedLE SampleFmtMuLaw8Bit Instances Show SampleFmt

type SampleFreq = Int Source

data SoundFmt Source

Constructors SoundFmt sampleFmt :: SampleFmt sampleFreq :: SampleFreq numChannels :: Int Instances Show SoundFmt

data SoundSource handle Source

Counts are in samples, not bytes. Multi-channel data is interleaved. Constructors SoundSource soundSourceFmt :: SoundFmt soundSourceOpen :: IO handle soundSourceClose :: handle -> IO () soundSourceStart :: handle -> IO () soundSourceStop :: handle -> IO () soundSourceRead :: handle -> Ptr () -> Int -> IO Int

data SoundSink handle Source

Constructors SoundSink soundSinkFmt :: SoundFmt soundSinkOpen :: IO handle soundSinkClose :: handle -> IO () soundSinkWrite :: handle -> Ptr () -> Int -> IO () soundSinkStart :: handle -> IO () soundSinkStop :: handle -> IO ()

withSoundSource :: SoundSource h -> (h -> IO a) -> IO a Source

withSoundSourceRunning :: SoundSource h -> h -> IO a -> IO a Source

withSoundSink :: SoundSink h -> (h -> IO a) -> IO a Source

withSoundSinkRunning :: SoundSink h -> h -> IO a -> IO a Source

soundFmtMIME :: SoundFmt -> String Source

audioBytesPerSample :: SoundFmt -> Int Source

audioBytesPerFrame :: SoundFmt -> Int Source

soundSourceBytesPerFrame :: SoundSource h -> Int Source

soundSinkBytesPerFrame :: SoundSink h -> Int Source

soundSourceReadBytes :: SoundSource h -> h -> Ptr () -> Int -> IO Int Source

soundSinkWriteBytes :: SoundSink h -> h -> Ptr () -> Int -> IO () Source

copySound Source

:: => SoundSource h1 -> SoundSink h2 -> Int Buffer size (in bytes) to use -> IO ()

alsaSoundSource :: String -> SoundFmt -> SoundSource Pcm Source

alsaSoundSink :: String -> SoundFmt -> SoundSink Pcm Source

fileSoundSource :: FilePath -> SoundFmt -> SoundSource Handle Source

fileSoundSink :: FilePath -> SoundFmt -> SoundSink Handle Source

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