alsa-0.3: Binding to the ALSA Library API. Source code Contents Index

Sound.Alsa

Synopsis

class (Storable y, C y) => SampleFmt y where sampleFmtToPcmFormat :: y -> PcmFormat type SampleFreq = Int type Time = Int data SoundFmt y = SoundFmt { sampleFreq :: SampleFreq } data SoundSource y handle = SoundSource { soundSourceFmt :: SoundFmt y soundSourceOpen :: IO handle soundSourceClose :: handle -> IO () soundSourceStart :: handle -> IO () soundSourceStop :: handle -> IO () soundSourceRead :: handle -> Ptr y -> Int -> IO Int } data SoundSink y handle = SoundSink { soundSinkFmt :: SoundFmt y soundSinkOpen :: IO handle soundSinkClose :: handle -> IO () soundSinkWrite :: handle -> Ptr y -> Int -> IO () soundSinkStart :: handle -> IO () soundSinkStop :: handle -> IO () } data SoundBufferTime = SoundBufferTime { bufferTime :: Time periodTime :: Time } withSoundSource :: SoundSource y h -> (h -> IO a) -> IO a withSoundSourceRunning :: SoundSource y h -> h -> IO a -> IO a withSoundSink :: SoundSink y h -> (h -> IO a) -> IO a withSoundSinkRunning :: SoundSink y h -> h -> IO a -> IO a soundFmtMIME :: SampleFmt y => SoundFmt y -> String audioBytesPerSample :: SampleFmt y => SoundFmt y -> Int audioBytesPerFrame :: SampleFmt y => SoundFmt y -> Int soundSourceBytesPerFrame :: SampleFmt y => SoundSource y h -> Int soundSinkBytesPerFrame :: SampleFmt y => SoundSink y h -> Int copySound :: SampleFmt y => SoundSource y h1 -> SoundSink y h2 -> Int -> IO () alsaSoundSource :: SampleFmt y => String -> SoundFmt y -> SoundSource y Pcm alsaSoundSink :: SampleFmt y => String -> SoundFmt y -> SoundSink y Pcm alsaSoundSourceTime :: SampleFmt y => String -> SoundFmt y -> SoundBufferTime -> SoundSource y Pcm alsaSoundSinkTime :: SampleFmt y => String -> SoundFmt y -> SoundBufferTime -> SoundSink y Pcm fileSoundSource :: SampleFmt y => FilePath -> SoundFmt y -> SoundSource y Handle fileSoundSink :: SampleFmt y => FilePath -> SoundFmt y -> SoundSink y Handle

Documentation

class (Storable y, C y) => SampleFmt y where Source

Methods sampleFmtToPcmFormat :: y -> PcmFormat Source Instances SampleFmt Double SampleFmt Float SampleFmt Int8 SampleFmt Int16 SampleFmt Int32 SampleFmt Word8 SampleFmt Word16 SampleFmt Word32 SampleFmt T SampleFmt a => SampleFmt (T a)

type SampleFreq = Int Source

type Time = Int Source

data SoundFmt y Source

Constructors SoundFmt sampleFreq :: SampleFreq Instances Show (SoundFmt y)

data SoundSource y handle Source

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

data SoundSink y handle Source

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

data SoundBufferTime Source

Constructors SoundBufferTime bufferTime :: Time periodTime :: Time Instances Show SoundBufferTime

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

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

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

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

soundFmtMIME :: SampleFmt y => SoundFmt y -> String Source

audioBytesPerSample :: SampleFmt y => SoundFmt y -> Int Source

audioBytesPerFrame :: SampleFmt y => SoundFmt y -> Int Source

soundSourceBytesPerFrame :: SampleFmt y => SoundSource y h -> Int Source

soundSinkBytesPerFrame :: SampleFmt y => SoundSink y h -> Int Source

copySound Source

:: SampleFmt y => SoundSource y h1 -> SoundSink y h2 -> Int Buffer size (in sample frames) to use -> IO ()

alsaSoundSource :: SampleFmt y => String -> SoundFmt y -> SoundSource y Pcm Source

alsaSoundSink :: SampleFmt y => String -> SoundFmt y -> SoundSink y Pcm Source

alsaSoundSourceTime :: SampleFmt y => String -> SoundFmt y -> SoundBufferTime -> SoundSource y Pcm Source

alsaSoundSinkTime :: SampleFmt y => String -> SoundFmt y -> SoundBufferTime -> SoundSink y Pcm Source

fileSoundSource :: SampleFmt y => FilePath -> SoundFmt y -> SoundSource y Handle Source

fileSoundSink :: SampleFmt y => FilePath -> SoundFmt y -> SoundSink y Handle Source

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