/haskell-mpv

Thread-safe Haskell wrapper around libmpv

Primary LanguageHaskellISC LicenseISC

haskell-mpv

A thread-safe, mid-level Haskell wrapper around libmpv.

Usage

A very spartan media player in 18 lines, using Codec.MPV.Simple:

module Main where
import Codec.MPV.Simple
import Control.Concurrent (MVar, newEmptyMVar, putMVar, takeMVar)
import System.Environment (getArgs)

main :: IO ()
main = do
  files <- getArgs
  fileDone <- newEmptyMVar
  mpv <- simpleMPV simpleSettings { eventHandler = handleEOF fileDone }
  mapM_ (playFile mpv fileDone) files

handleEOF :: MVar () -> MPV -> MPVEvent -> IO ()
handleEOF fileDone mpv (EndFileEvent _) = putMVar fileDone ()
handleEOF fileDone mpv _                = return ()

playFile :: MPV -> MVar () -> FilePath -> IO ()
playFile mpv fileDone file = loadFile mpv file >> takeMVar fileDone

For more control over rendering, window management, and the MPV event loop, use Codec.MPV instead.

Troubleshooting

I don't get any video output!

  • Did you create an OpenGL rendering context and set it as the current context (glMakeCurrent)?
  • Are you calling renderFrame in response to RenderEvents?
  • Are you properly presenting your rendering buffer after calling renderFrame (glSwapBuffers)?