{-# LINE 1 "src/Sound/ALSA/Sequencer/Marshal/Client.hsc" #-}
--------------------------------------------------------------------------------
-- |
-- Module    : Sound.ALSA.Sequencer.Marshal
-- Copyright : (c) Henning Thielemann, 2010
--             (c) Iavor S. Diatchki, 2007
-- License   : BSD3
--
-- Maintainer: Henning Thielemann
-- Stability : provisional
--
-- PRIVATE MODULE.
--
-- Here we have the various types used by the library,
-- and how they are imported\/exported to C.
--
-- We use Hsc for expanding C types to Haskell types like Word32.
-- However if a C type is translated to Word32
-- you should not assume that it is translated to Word32 on every platform.
-- On a 64bit machine it may well be Word64.
-- Thus you should use our wrapper types whereever possible.
--------------------------------------------------------------------------------

{-# LANGUAGE GeneralizedNewtypeDeriving #-}
module Sound.ALSA.Sequencer.Marshal.Client where




import qualified Sound.ALSA.Sequencer.Utility as U
import qualified Foreign.C.Types as C
import qualified Data.Word as Word
import Foreign.Storable (Storable, )


-- | The type of client identifiers.
newtype T =
   Cons Word.Word8
{-# LINE 38 "src/Sound/ALSA/Sequencer/Marshal/Client.hsc" #-}
      deriving (Eq, Ord, Storable)

instance Show T where
   showsPrec :: Int -> T -> ShowS
showsPrec Int
prec (Cons Word8
x) =
      Int -> String -> [ShowS] -> ShowS
U.showsRecord Int
prec String
"Client" [forall a. Show a => a -> ShowS
U.showsField Word8
x]


system       :: T
system :: T
system       = Word8 -> T
Cons Word8
0
subscribers  :: T
subscribers :: T
subscribers  = Word8 -> T
Cons Word8
254
broadcast    :: T
broadcast :: T
broadcast    = Word8 -> T
Cons Word8
255
unknown      :: T
unknown :: T
unknown      = Word8 -> T
Cons Word8
253

{-# LINE 51 "src/Sound/ALSA/Sequencer/Marshal/Client.hsc" #-}



exp :: T -> C.CInt
exp :: T -> CInt
exp (Cons Word8
c) = forall a b. (Integral a, Num b) => a -> b
fromIntegral Word8
c

imp :: C.CInt -> T
imp :: CInt -> T
imp CInt
p = Word8 -> T
Cons (forall a b. (Integral a, Num b) => a -> b
fromIntegral CInt
p)

-- | The different types of clients.
data Type = User | Kernel

impType :: C.CInt -> Type
impType :: CInt -> Type
impType CInt
x =
   if CInt
x forall a. Eq a => a -> a -> Bool
== CInt
1
{-# LINE 66 "src/Sound/ALSA/Sequencer/Marshal/Client.hsc" #-}
     then Type
User
     else Type
Kernel