Sound.Honk.Internal

Low level FFI interface. You should rarely need to use this directly.

Types

newtype BeepFd

Constructors

BeepFd CInt

Core functions

beepOpen :: IO BeepFd

Open a handle to the console.

Use withBeepFd instead if possible, since it keeps track of closing the handle automatically.

beepDo

Arguments

:: BeepFd

A console handle, as returned by beepOpen

-> Rational

Duration, in seconds

-> Double

Frequency of the beep, in hertz

-> IO ()

Perform a beep.

beepClose :: BeepFd -> IO ()

Close the handle.

Convenience functions

withBeepFd :: (BeepFd -> IO a) -> IO a

Run a function that uses a BeepFd, opening and closing the handle automatically.