{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveFoldable #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DeriveTraversable #-}
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PatternSynonyms #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE StandaloneDeriving #-}
{-# LANGUAGE ScopedTypeVariables #-}

{-|

"SDL.Audio" provides a high-level API to SDL's audio device capabilities.

-}

module SDL.Audio
  ( -- * Managing 'AudioDevice's
    -- $audioDevice
    AudioDevice

    -- ** Opening and Closing 'AudioDevice's
  , openAudioDevice
  , closeAudioDevice
  , OpenDeviceSpec(..)
  , AudioDeviceUsage(..)
  , Channels(..)
  , Changeable(..)

    -- ** Working with Opened Devices
    -- *** Locking 'AudioDevice's
  , setAudioDeviceLocked
  , LockState(..)

    -- *** Switching Playback States
  , PlaybackState(..)
  , setAudioDevicePlaybackState

    -- *** Querying an 'AudioDevice's Status.
  , AudioDeviceStatus(..)
  , audioDeviceStatus

    -- ** 'AudioFormat'
  , AudioFormat(..)

    -- ** Enumerating 'AudioDevice's
  , getAudioDeviceNames

    -- * 'AudioSpec'
  , AudioSpec(..)

    -- * Audio Drivers
  , getAudioDrivers
  , currentAudioDriver
  , AudioDriver
  , audioDriverName

    -- * Explicit Initialization
  , audioInit
  ) where

import Control.Monad.IO.Class (MonadIO, liftIO)
import Data.Bits
import Data.Data (Data)
import Data.IORef (newIORef, writeIORef, readIORef)
import Data.Int (Int8, Int16, Int32)
import Data.Text (Text)
import Data.Traversable (for)
import Data.Typeable
import Data.Word
import Foreign.C.Types
import Foreign.ForeignPtr
import Foreign.Marshal.Alloc
import Foreign.Marshal.Utils
import Foreign.Ptr
import Foreign.Storable
import GHC.Exts (Constraint)
import GHC.Generics (Generic)
import SDL.Internal.Exception
import qualified Data.ByteString as BS
import qualified Data.Text.Encoding as Text
import qualified Data.Vector as V
import qualified Data.Vector.Storable.Mutable as MV
import qualified SDL.Raw.Audio as Raw
import qualified SDL.Raw.Enum as Raw
import qualified SDL.Raw.Types as Raw

#if !MIN_VERSION_base(4,8,0)
import Control.Applicative
import Data.Foldable (Foldable)
import Data.Traversable (Traversable)
#endif

#if MIN_VERSION_base(4,12,0)
import Data.Kind (Type)
#else
# define Type *
#endif

{-

$audioDevice

In order to produce sound, you must first open an 'AudioDevice'. To do so,
pass an 'OpenDeviceSpec' to 'openAudioDevice'.

-}

-- | A specification to 'openAudioDevice', indicating the desired output format.
-- Note that many of these properties are 'Changeable', meaning that you can
-- choose whether or not SDL should interpret your specification as an
-- unbreakable request ('Mandate'), or as an approximation 'Desire'.
data OpenDeviceSpec = forall sampleType. OpenDeviceSpec
  { OpenDeviceSpec -> Changeable CInt
openDeviceFreq :: !(Changeable CInt)
    -- ^ The output audio frequency in herts.
  , ()
openDeviceFormat :: !(Changeable (AudioFormat sampleType))
    -- ^ The format of audio that will be sampled from the output buffer.
  , OpenDeviceSpec -> Changeable Channels
openDeviceChannels :: !(Changeable Channels)
    -- ^ The amount of audio channels.
  , OpenDeviceSpec -> Word16
openDeviceSamples :: !Word16
    -- ^ Output audio buffer size in samples. This should be a power of 2.
  , OpenDeviceSpec
-> forall actualSampleType.
   AudioFormat actualSampleType -> IOVector actualSampleType -> IO ()
openDeviceCallback :: forall actualSampleType. AudioFormat actualSampleType -> MV.IOVector actualSampleType -> IO ()
    -- ^ A callback to invoke whenever new sample data is required. The callback
    -- will be passed a single 'MV.MVector' that must be filled with audio data.
  , OpenDeviceSpec -> AudioDeviceUsage
openDeviceUsage :: !AudioDeviceUsage
    -- ^ How you intend to use the opened 'AudioDevice' - either for outputting
    -- or capturing audio.
  , OpenDeviceSpec -> Maybe Text
openDeviceName :: !(Maybe Text)
    -- ^ The name of the 'AudioDevice' that should be opened. If 'Nothing',
    -- any suitable 'AudioDevice' will be used.
  } deriving (Typeable)

-- | Attempt to open the closest matching 'AudioDevice', as specified by the
-- given 'OpenDeviceSpec'.
--
-- See @<https://wiki.libsdl.org/SDL_OpenAudioDevice SDL_OpenAudioDevice>@ for C documentation.
openAudioDevice :: MonadIO m => OpenDeviceSpec -> m (AudioDevice, AudioSpec)
openAudioDevice :: forall (m :: Type -> Type).
MonadIO m =>
OpenDeviceSpec -> m (AudioDevice, AudioSpec)
openAudioDevice OpenDeviceSpec{Maybe Text
Word16
Changeable CInt
Changeable Channels
Changeable (AudioFormat sampleType)
AudioDeviceUsage
forall actualSampleType.
AudioFormat actualSampleType -> IOVector actualSampleType -> IO ()
openDeviceName :: Maybe Text
openDeviceUsage :: AudioDeviceUsage
openDeviceCallback :: forall actualSampleType.
AudioFormat actualSampleType -> IOVector actualSampleType -> IO ()
openDeviceSamples :: Word16
openDeviceChannels :: Changeable Channels
openDeviceFormat :: Changeable (AudioFormat sampleType)
openDeviceFreq :: Changeable CInt
openDeviceName :: OpenDeviceSpec -> Maybe Text
openDeviceUsage :: OpenDeviceSpec -> AudioDeviceUsage
openDeviceCallback :: OpenDeviceSpec
-> forall actualSampleType.
   AudioFormat actualSampleType -> IOVector actualSampleType -> IO ()
openDeviceSamples :: OpenDeviceSpec -> Word16
openDeviceChannels :: OpenDeviceSpec -> Changeable Channels
openDeviceFormat :: ()
openDeviceFreq :: OpenDeviceSpec -> Changeable CInt
..} = forall (m :: Type -> Type) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$
  forall a b c.
(a -> (Ptr b -> IO c) -> IO c)
-> Maybe a -> (Ptr b -> IO c) -> IO c
maybeWith (forall a. ByteString -> (Ptr CChar -> IO a) -> IO a
BS.useAsCString forall b c a. (b -> c) -> (a -> b) -> a -> c
. Text -> ByteString
Text.encodeUtf8) Maybe Text
openDeviceName forall a b. (a -> b) -> a -> b
$ \Ptr CChar
cDevName -> do
    IORef AnAudioFormat
anAudioFormatRef <- forall a. a -> IO (IORef a)
newIORef forall a. HasCallStack => a
undefined
    AudioCallback
cb <- (Ptr () -> Ptr Word8 -> CInt -> IO ()) -> IO AudioCallback
Raw.mkAudioCallback forall a b. (a -> b) -> a -> b
$ \Ptr ()
_ Ptr Word8
buffer CInt
len -> do
      ForeignPtr Word8
fp <- forall a. Ptr a -> IO (ForeignPtr a)
newForeignPtr_ Ptr Word8
buffer
      AnAudioFormat
anAudioFormat <- forall a. IORef a -> IO a
readIORef IORef AnAudioFormat
anAudioFormatRef
      case AnAudioFormat
anAudioFormat of
        AnAudioFormat AudioFormat sampleType
audioFormat ->
          case forall sampleType.
AudioFormat sampleType -> Dict (Storable sampleType)
audioFormatStorable AudioFormat sampleType
audioFormat of
            Dict (Storable sampleType)
Dict -> forall actualSampleType.
AudioFormat actualSampleType -> IOVector actualSampleType -> IO ()
openDeviceCallback AudioFormat sampleType
audioFormat
                                       (forall a b s.
(Storable a, Storable b) =>
MVector s a -> MVector s b
MV.unsafeCast (forall a s. ForeignPtr a -> Int -> MVector s a
MV.unsafeFromForeignPtr0 ForeignPtr Word8
fp (forall a b. (Integral a, Num b) => a -> b
fromIntegral CInt
len)))
    forall a b. Storable a => a -> (Ptr a -> IO b) -> IO b
with (AudioCallback -> AudioSpec
desiredSpec AudioCallback
cb) forall a b. (a -> b) -> a -> b
$ \Ptr AudioSpec
desiredSpecPtr ->
      forall a b. Storable a => (Ptr a -> IO b) -> IO b
alloca forall a b. (a -> b) -> a -> b
$ \Ptr AudioSpec
actualSpecPtr -> do
        Word32
devId <- forall a (m :: Type -> Type).
(Eq a, MonadIO m, Num a) =>
Text -> Text -> m a -> m a
throwIf0 Text
"SDL.Audio.openAudioDevice" Text
"SDL_OpenAudioDevice" forall a b. (a -> b) -> a -> b
$
          forall (m :: Type -> Type).
MonadIO m =>
Ptr CChar
-> CInt -> Ptr AudioSpec -> Ptr AudioSpec -> CInt -> m Word32
Raw.openAudioDevice Ptr CChar
cDevName (forall a. Num a => AudioDeviceUsage -> a
encodeUsage AudioDeviceUsage
openDeviceUsage) Ptr AudioSpec
desiredSpecPtr Ptr AudioSpec
actualSpecPtr CInt
changes
        AudioSpec
actual <- forall a. Storable a => Ptr a -> IO a
peek Ptr AudioSpec
actualSpecPtr
        let audioDevice :: AudioDevice
audioDevice = Word32 -> AudioDevice
AudioDevice Word32
devId
            anAudioFormat :: AnAudioFormat
anAudioFormat = Word16 -> AnAudioFormat
decodeAudioFormat (AudioSpec -> Word16
Raw.audioSpecFormat AudioSpec
actual)
            spec :: AudioSpec
spec =
              case AnAudioFormat
anAudioFormat of
                AnAudioFormat AudioFormat sampleType
audioFormat ->
                  AudioSpec { audioSpecFreq :: CInt
audioSpecFreq = AudioSpec -> CInt
Raw.audioSpecFreq AudioSpec
actual
                            , audioSpecFormat :: AudioFormat sampleType
audioSpecFormat = AudioFormat sampleType
audioFormat
                            , audioSpecChannels :: Channels
audioSpecChannels = forall a b. Show a => Text -> Text -> (a -> Maybe b) -> a -> b
fromC Text
"SDL.Audio.openAudioDevice" Text
"audioSpecChannels" forall {a}. (Eq a, Num a) => a -> Maybe Channels
readChannels (AudioSpec -> Word8
Raw.audioSpecChannels AudioSpec
actual)
                            , audioSpecSilence :: Word8
audioSpecSilence = AudioSpec -> Word8
Raw.audioSpecSilence AudioSpec
actual
                            , audioSpecSize :: Word32
audioSpecSize = AudioSpec -> Word32
Raw.audioSpecSize AudioSpec
actual
                            , audioSpecSamples :: Word16
audioSpecSamples = AudioSpec -> Word16
Raw.audioSpecSamples AudioSpec
actual
                            , audioSpecCallback :: AudioFormat sampleType -> IOVector sampleType -> IO ()
audioSpecCallback = forall actualSampleType.
AudioFormat actualSampleType -> IOVector actualSampleType -> IO ()
openDeviceCallback
                            }
        forall a. IORef a -> a -> IO ()
writeIORef IORef AnAudioFormat
anAudioFormatRef AnAudioFormat
anAudioFormat
        forall (m :: Type -> Type) a. Monad m => a -> m a
return (AudioDevice
audioDevice, AudioSpec
spec)

  where
  changes :: CInt
changes = forall (t :: Type -> Type) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl forall a. Bits a => a -> a -> a
(.|.) CInt
0 [ forall a b. (a -> b) -> (a -> b) -> Changeable a -> b
foldChangeable (forall a b. a -> b -> a
const CInt
0) (forall a b. a -> b -> a
const forall {a}. (Eq a, Num a) => a
Raw.SDL_AUDIO_ALLOW_FREQUENCY_CHANGE) Changeable CInt
openDeviceFreq
                          , forall a b. (a -> b) -> (a -> b) -> Changeable a -> b
foldChangeable (forall a b. a -> b -> a
const CInt
0) (forall a b. a -> b -> a
const forall {a}. (Eq a, Num a) => a
Raw.SDL_AUDIO_ALLOW_FORMAT_CHANGE) Changeable (AudioFormat sampleType)
openDeviceFormat
                          , forall a b. (a -> b) -> (a -> b) -> Changeable a -> b
foldChangeable (forall a b. a -> b -> a
const CInt
0) (forall a b. a -> b -> a
const forall {a}. (Eq a, Num a) => a
Raw.SDL_AUDIO_ALLOW_CHANNELS_CHANGE) Changeable Channels
openDeviceChannels
                          ]

  channelsToWord8 :: Channels -> a
channelsToWord8 Channels
Mono = a
1
  channelsToWord8 Channels
Stereo = a
2
  channelsToWord8 Channels
Quad = a
4
  channelsToWord8 Channels
FivePointOne = a
6

  readChannels :: a -> Maybe Channels
readChannels a
1 = forall a. a -> Maybe a
Just Channels
Mono
  readChannels a
2 = forall a. a -> Maybe a
Just Channels
Stereo
  readChannels a
4 = forall a. a -> Maybe a
Just Channels
Quad
  readChannels a
6 = forall a. a -> Maybe a
Just Channels
FivePointOne
  readChannels a
_ = forall a. Maybe a
Nothing

  desiredSpec :: AudioCallback -> AudioSpec
desiredSpec AudioCallback
cb = Raw.AudioSpec
    { audioSpecFreq :: CInt
Raw.audioSpecFreq = forall a. Changeable a -> a
unpackChangeable Changeable CInt
openDeviceFreq
    , audioSpecFormat :: Word16
Raw.audioSpecFormat = forall sampleType. AudioFormat sampleType -> Word16
encodeAudioFormat (forall a. Changeable a -> a
unpackChangeable Changeable (AudioFormat sampleType)
openDeviceFormat)
    , audioSpecChannels :: Word8
Raw.audioSpecChannels = forall {a}. Num a => Channels -> a
channelsToWord8 (forall a. Changeable a -> a
unpackChangeable Changeable Channels
openDeviceChannels)
    , audioSpecSilence :: Word8
Raw.audioSpecSilence = Word8
0
    , audioSpecSize :: Word32
Raw.audioSpecSize = Word32
0
    , audioSpecSamples :: Word16
Raw.audioSpecSamples = Word16
openDeviceSamples
    , audioSpecCallback :: AudioCallback
Raw.audioSpecCallback = AudioCallback
cb
    , audioSpecUserdata :: Ptr ()
Raw.audioSpecUserdata = forall a. Ptr a
nullPtr
    }

  -- Witness the 'Storable' instance for the sample type of any audio format. Needed in order to use 'MV.unsafeCast'
  audioFormatStorable :: AudioFormat sampleType -> Dict (Storable sampleType)
  audioFormatStorable :: forall sampleType.
AudioFormat sampleType -> Dict (Storable sampleType)
audioFormatStorable AudioFormat sampleType
Signed8BitAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Unsigned8BitAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Signed16BitLEAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Signed16BitBEAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Signed16BitNativeAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Unsigned16BitLEAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Unsigned16BitBEAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Unsigned16BitNativeAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Signed32BitLEAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Signed32BitBEAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
Signed32BitNativeAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
FloatingLEAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
FloatingBEAudio = forall (c :: Constraint). c => Dict c
Dict
  audioFormatStorable AudioFormat sampleType
FloatingNativeAudio = forall (c :: Constraint). c => Dict c
Dict

data Dict :: Constraint -> Type where
  Dict :: c => Dict c

-- |
--
-- See @<https://wiki.libsdl.org/SDL_CloseAudioDevice SDL_CloseAudioDevice>@ for C documentation.
closeAudioDevice :: MonadIO m => AudioDevice -> m ()
closeAudioDevice :: forall (m :: Type -> Type). MonadIO m => AudioDevice -> m ()
closeAudioDevice (AudioDevice Word32
d) = forall (m :: Type -> Type). MonadIO m => Word32 -> m ()
Raw.closeAudioDevice Word32
d

-- | An open audio device. These can be created via 'openAudioDevice' and should be closed with 'closeAudioDevice'
newtype AudioDevice = AudioDevice (Raw.AudioDeviceID)
  deriving (AudioDevice -> AudioDevice -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: AudioDevice -> AudioDevice -> Bool
$c/= :: AudioDevice -> AudioDevice -> Bool
== :: AudioDevice -> AudioDevice -> Bool
$c== :: AudioDevice -> AudioDevice -> Bool
Eq, Typeable)

-- | Enumerate all 'AudioDevice's attached to this system, that can be used as
-- specified by the given 'AudioDeviceUsage'. SDL cannot always guarantee
-- that this list can be produced, in which case 'Nothing' will be returned.
getAudioDeviceNames :: MonadIO m => AudioDeviceUsage -> m (Maybe (V.Vector Text))
getAudioDeviceNames :: forall (m :: Type -> Type).
MonadIO m =>
AudioDeviceUsage -> m (Maybe (Vector Text))
getAudioDeviceNames AudioDeviceUsage
usage = forall (m :: Type -> Type) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ do
  CInt
n <- forall (m :: Type -> Type). MonadIO m => CInt -> m CInt
Raw.getNumAudioDevices CInt
usage'
  if CInt
n forall a. Eq a => a -> a -> Bool
== -CInt
1
    then forall (m :: Type -> Type) a. Monad m => a -> m a
return forall a. Maybe a
Nothing
    else forall (f :: Type -> Type) a b. Functor f => (a -> b) -> f a -> f b
fmap (forall a. a -> Maybe a
Just forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall a. [a] -> Vector a
V.fromList) forall a b. (a -> b) -> a -> b
$
         forall (t :: Type -> Type) (f :: Type -> Type) a b.
(Traversable t, Applicative f) =>
t a -> (a -> f b) -> f (t b)
for [CInt
0 .. (CInt
n forall a. Num a => a -> a -> a
- CInt
1)] forall a b. (a -> b) -> a -> b
$ \CInt
i -> do
           Ptr CChar
cstr <- forall (m :: Type -> Type) a.
MonadIO m =>
Text -> Text -> m (Ptr a) -> m (Ptr a)
throwIfNull Text
"SDL.Audio.getAudioDeviceNames" Text
"SDL_GetAudioDeviceName" forall a b. (a -> b) -> a -> b
$
             forall (m :: Type -> Type).
MonadIO m =>
CInt -> CInt -> m (Ptr CChar)
Raw.getAudioDeviceName CInt
i CInt
usage'
           ByteString -> Text
Text.decodeUtf8 forall (f :: Type -> Type) a b. Functor f => (a -> b) -> f a -> f b
<$> Ptr CChar -> IO ByteString
BS.packCString Ptr CChar
cstr

  where usage' :: CInt
usage' = forall a. Num a => AudioDeviceUsage -> a
encodeUsage AudioDeviceUsage
usage

-- | Information about what format an audio bytestream is. The type variable
-- @t@ indicates the type used for audio buffer samples. It is determined
-- by the choice of the provided 'SampleBitSize'. For example:
--
-- @AudioFormat UnsignedInteger Sample8Bit Native :: AudioFormat Word8@
--
-- Indicating that an 8-bit audio format in the platforms native endianness
-- uses a buffer of 'Word8' values.
data AudioFormat sampleType where
  Signed8BitAudio :: AudioFormat Int8
  Unsigned8BitAudio :: AudioFormat Word8
  Signed16BitLEAudio :: AudioFormat Int16
  Signed16BitBEAudio :: AudioFormat Int16
  Signed16BitNativeAudio :: AudioFormat Int16
  Unsigned16BitLEAudio :: AudioFormat Word16
  Unsigned16BitBEAudio :: AudioFormat Word16
  Unsigned16BitNativeAudio :: AudioFormat Word16
  Signed32BitLEAudio :: AudioFormat Int32
  Signed32BitBEAudio :: AudioFormat Int32
  Signed32BitNativeAudio :: AudioFormat Int32
  FloatingLEAudio :: AudioFormat Float
  FloatingBEAudio :: AudioFormat Float
  FloatingNativeAudio :: AudioFormat Float

deriving instance Eq (AudioFormat sampleType)
deriving instance Ord (AudioFormat sampleType)
deriving instance Show (AudioFormat sampleType)

data AnAudioFormat where
  AnAudioFormat :: AudioFormat sampleType -> AnAudioFormat

encodeAudioFormat :: AudioFormat sampleType -> Word16
encodeAudioFormat :: forall sampleType. AudioFormat sampleType -> Word16
encodeAudioFormat AudioFormat sampleType
Signed8BitAudio = Word16
Raw.SDL_AUDIO_S8
encodeAudioFormat AudioFormat sampleType
Unsigned8BitAudio = Word16
Raw.SDL_AUDIO_U8
encodeAudioFormat AudioFormat sampleType
Signed16BitLEAudio = Word16
Raw.SDL_AUDIO_S16LSB
encodeAudioFormat AudioFormat sampleType
Signed16BitBEAudio = Word16
Raw.SDL_AUDIO_S16MSB
encodeAudioFormat AudioFormat sampleType
Signed16BitNativeAudio = Word16
Raw.SDL_AUDIO_S16SYS
encodeAudioFormat AudioFormat sampleType
Unsigned16BitLEAudio = Word16
Raw.SDL_AUDIO_U16LSB
encodeAudioFormat AudioFormat sampleType
Unsigned16BitBEAudio = Word16
Raw.SDL_AUDIO_U16MSB
encodeAudioFormat AudioFormat sampleType
Unsigned16BitNativeAudio = Word16
Raw.SDL_AUDIO_U16SYS
encodeAudioFormat AudioFormat sampleType
Signed32BitLEAudio = Word16
Raw.SDL_AUDIO_S32LSB
encodeAudioFormat AudioFormat sampleType
Signed32BitBEAudio = Word16
Raw.SDL_AUDIO_S32MSB
encodeAudioFormat AudioFormat sampleType
Signed32BitNativeAudio = Word16
Raw.SDL_AUDIO_S32SYS
encodeAudioFormat AudioFormat sampleType
FloatingLEAudio = Word16
Raw.SDL_AUDIO_F32LSB
encodeAudioFormat AudioFormat sampleType
FloatingBEAudio = Word16
Raw.SDL_AUDIO_F32MSB
encodeAudioFormat AudioFormat sampleType
FloatingNativeAudio = Word16
Raw.SDL_AUDIO_F32SYS

decodeAudioFormat :: Word16 -> AnAudioFormat
decodeAudioFormat :: Word16 -> AnAudioFormat
decodeAudioFormat Word16
Raw.SDL_AUDIO_S8 = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Int8
Signed8BitAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_U8 = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Word8
Unsigned8BitAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_S16LSB = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Int16
Signed16BitLEAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_S16MSB = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Int16
Signed16BitBEAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_S16SYS = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Int16
Signed16BitNativeAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_U16LSB = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Word16
Unsigned16BitLEAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_U16MSB = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Word16
Unsigned16BitBEAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_U16SYS = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Word16
Unsigned16BitNativeAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_S32LSB = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Int32
Signed32BitLEAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_S32MSB = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Int32
Signed32BitBEAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_S32SYS = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Int32
Signed32BitNativeAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_F32LSB = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Float
FloatingLEAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_F32MSB = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Float
FloatingBEAudio
decodeAudioFormat Word16
Raw.SDL_AUDIO_F32SYS = forall sampleType. AudioFormat sampleType -> AnAudioFormat
AnAudioFormat AudioFormat Float
FloatingNativeAudio
decodeAudioFormat Word16
x = forall a. HasCallStack => [Char] -> a
error ([Char]
"decodeAudioFormat failed: Unknown format " forall a. [a] -> [a] -> [a]
++ forall a. Show a => a -> [Char]
show Word16
x)

-- | How many channels audio should be played on
data Channels
  = Mono -- ^ A single speaker configuration
  | Stereo -- ^ A traditional left/right stereo system
  | Quad
  | FivePointOne -- ^ 5.1 surround sound
  deriving (Channels
forall a. a -> a -> Bounded a
maxBound :: Channels
$cmaxBound :: Channels
minBound :: Channels
$cminBound :: Channels
Bounded,Typeable Channels
Channels -> DataType
Channels -> Constr
(forall b. Data b => b -> b) -> Channels -> Channels
forall a.
Typeable a
-> (forall (c :: Type -> Type).
    (forall d b. Data d => c (d -> b) -> d -> c b)
    -> (forall g. g -> c g) -> a -> c a)
-> (forall (c :: Type -> Type).
    (forall b r. Data b => c (b -> r) -> c r)
    -> (forall r. r -> c r) -> Constr -> c a)
-> (a -> Constr)
-> (a -> DataType)
-> (forall (t :: Type -> Type) (c :: Type -> Type).
    Typeable t =>
    (forall d. Data d => c (t d)) -> Maybe (c a))
-> (forall (t :: Type -> Type -> Type) (c :: Type -> Type).
    Typeable t =>
    (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c a))
-> ((forall b. Data b => b -> b) -> a -> a)
-> (forall r r'.
    (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> a -> r)
-> (forall r r'.
    (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> a -> r)
-> (forall u. (forall d. Data d => d -> u) -> a -> [u])
-> (forall u. Int -> (forall d. Data d => d -> u) -> a -> u)
-> (forall (m :: Type -> Type).
    Monad m =>
    (forall d. Data d => d -> m d) -> a -> m a)
-> (forall (m :: Type -> Type).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> a -> m a)
-> (forall (m :: Type -> Type).
    MonadPlus m =>
    (forall d. Data d => d -> m d) -> a -> m a)
-> Data a
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-- | 'AudioSpec' is the concrete specification of how an 'AudioDevice' was
-- sucessfully opened. Unlike 'OpenDeviceSpec', which specifies what you
-- /want/, 'AudioSpec' specifies what you /have/.
data AudioSpec = forall sampleType. AudioSpec
  { AudioSpec -> CInt
audioSpecFreq :: !CInt
    -- ^ DSP frequency (samples per second)
  , ()
audioSpecFormat :: !(AudioFormat sampleType)
    -- ^ Audio data format
  , AudioSpec -> Channels
audioSpecChannels :: !Channels
    -- ^ Number of separate sound channels
  , AudioSpec -> Word8
audioSpecSilence :: !Word8
    -- ^ Calculated udio buffer silence value
  , AudioSpec -> Word16
audioSpecSamples :: !Word16
    -- ^ Audio buffer size in samples (power of 2)
  , AudioSpec -> Word32
audioSpecSize :: !Word32
    -- ^ Calculated audio buffer size in bytes
  , ()
audioSpecCallback :: AudioFormat sampleType -> MV.IOVector sampleType -> IO ()
    -- ^ The function to call when the audio device needs more data
  }
  deriving (Typeable)

-- | How you intend to use an 'AudioDevice'
data AudioDeviceUsage
  = ForPlayback -- ^ The device will be used for sample playback.
  | ForCapture -- ^ The device will be used for sample capture.
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-- | Used to indicate to SDL whether it is allowed to open other audio devices (if a property is marked as a 'Desire') or if it should fail if the device is unavailable ('Mandate').
data Changeable a
  = Mandate !a
    -- ^ 'Mandate' this exact property value, and fail if a matching audio device cannot be found.
  | Desire !a
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-- | Lock an 'AudioDevice' such that its associated callback will not be called
-- until the device is unlocked.
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-- | Whether to allow an 'AudioDevice' to play sound or remain paused.
data PlaybackState
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  | Play -- ^ Resume the 'AudioDevice'.
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max :: PlaybackState -> PlaybackState -> PlaybackState
$cmax :: PlaybackState -> PlaybackState -> PlaybackState
>= :: PlaybackState -> PlaybackState -> Bool
$c>= :: PlaybackState -> PlaybackState -> Bool
> :: PlaybackState -> PlaybackState -> Bool
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<= :: PlaybackState -> PlaybackState -> Bool
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< :: PlaybackState -> PlaybackState -> Bool
$c< :: PlaybackState -> PlaybackState -> Bool
compare :: PlaybackState -> PlaybackState -> Ordering
$ccompare :: PlaybackState -> PlaybackState -> Ordering
Ord, ReadPrec [PlaybackState]
ReadPrec PlaybackState
Int -> ReadS PlaybackState
ReadS [PlaybackState]
forall a.
(Int -> ReadS a)
-> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
readListPrec :: ReadPrec [PlaybackState]
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readPrec :: ReadPrec PlaybackState
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readList :: ReadS [PlaybackState]
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readsPrec :: Int -> ReadS PlaybackState
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Read, Typeable PlaybackState
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-> (forall (m :: Type -> Type).
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-> (forall (m :: Type -> Type).
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    (forall d. Data d => d -> m d) -> a -> m a)
-> (forall (m :: Type -> Type).
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-> Data a
forall u. Int -> (forall d. Data d => d -> u) -> PlaybackState -> u
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-> (forall g. g -> c g) -> PlaybackState -> c PlaybackState
forall (t :: Type -> Type) (c :: Type -> Type).
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(forall d. Data d => c (t d)) -> Maybe (c PlaybackState)
forall (t :: Type -> Type -> Type) (c :: Type -> Type).
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(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c PlaybackState)
gmapMo :: forall (m :: Type -> Type).
MonadPlus m =>
(forall d. Data d => d -> m d) -> PlaybackState -> m PlaybackState
$cgmapMo :: forall (m :: Type -> Type).
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(forall d. Data d => d -> m d) -> PlaybackState -> m PlaybackState
gmapMp :: forall (m :: Type -> Type).
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(forall d. Data d => d -> m d) -> PlaybackState -> m PlaybackState
$cgmapMp :: forall (m :: Type -> Type).
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gmapM :: forall (m :: Type -> Type).
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$cgmapM :: forall (m :: Type -> Type).
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(forall d. Data d => d -> m d) -> PlaybackState -> m PlaybackState
gmapQi :: forall u. Int -> (forall d. Data d => d -> u) -> PlaybackState -> u
$cgmapQi :: forall u. Int -> (forall d. Data d => d -> u) -> PlaybackState -> u
gmapQ :: forall u. (forall d. Data d => d -> u) -> PlaybackState -> [u]
$cgmapQ :: forall u. (forall d. Data d => d -> u) -> PlaybackState -> [u]
gmapQr :: forall r r'.
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> PlaybackState -> r
$cgmapQr :: forall r r'.
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> PlaybackState -> r
gmapQl :: forall r r'.
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> PlaybackState -> r
$cgmapQl :: forall r r'.
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> PlaybackState -> r
gmapT :: (forall b. Data b => b -> b) -> PlaybackState -> PlaybackState
$cgmapT :: (forall b. Data b => b -> b) -> PlaybackState -> PlaybackState
dataCast2 :: forall (t :: Type -> Type -> Type) (c :: Type -> Type).
Typeable t =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c PlaybackState)
$cdataCast2 :: forall (t :: Type -> Type -> Type) (c :: Type -> Type).
Typeable t =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c PlaybackState)
dataCast1 :: forall (t :: Type -> Type) (c :: Type -> Type).
Typeable t =>
(forall d. Data d => c (t d)) -> Maybe (c PlaybackState)
$cdataCast1 :: forall (t :: Type -> Type) (c :: Type -> Type).
Typeable t =>
(forall d. Data d => c (t d)) -> Maybe (c PlaybackState)
dataTypeOf :: PlaybackState -> DataType
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toConstr :: PlaybackState -> Constr
$ctoConstr :: PlaybackState -> Constr
gunfold :: forall (c :: Type -> Type).
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c PlaybackState
$cgunfold :: forall (c :: Type -> Type).
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c PlaybackState
gfoldl :: forall (c :: Type -> Type).
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> PlaybackState -> c PlaybackState
$cgfoldl :: forall (c :: Type -> Type).
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> PlaybackState -> c PlaybackState
Data, forall x. Rep PlaybackState x -> PlaybackState
forall x. PlaybackState -> Rep PlaybackState x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep PlaybackState x -> PlaybackState
$cfrom :: forall x. PlaybackState -> Rep PlaybackState x
Generic, Int -> PlaybackState -> ShowS
[PlaybackState] -> ShowS
PlaybackState -> [Char]
forall a.
(Int -> a -> ShowS) -> (a -> [Char]) -> ([a] -> ShowS) -> Show a
showList :: [PlaybackState] -> ShowS
$cshowList :: [PlaybackState] -> ShowS
show :: PlaybackState -> [Char]
$cshow :: PlaybackState -> [Char]
showsPrec :: Int -> PlaybackState -> ShowS
$cshowsPrec :: Int -> PlaybackState -> ShowS
Show, Typeable)

-- | Change the playback state of an 'AudioDevice'.
setAudioDevicePlaybackState :: MonadIO m => AudioDevice -> PlaybackState -> m ()
setAudioDevicePlaybackState :: forall (m :: Type -> Type).
MonadIO m =>
AudioDevice -> PlaybackState -> m ()
setAudioDevicePlaybackState (AudioDevice Word32
d) PlaybackState
Pause = forall (m :: Type -> Type). MonadIO m => Word32 -> CInt -> m ()
Raw.pauseAudioDevice Word32
d CInt
1
setAudioDevicePlaybackState (AudioDevice Word32
d) PlaybackState
Play = forall (m :: Type -> Type). MonadIO m => Word32 -> CInt -> m ()
Raw.pauseAudioDevice Word32
d CInt
0

-- | Opened devices are always 'Playing' or 'Paused' in normal circumstances. A
-- failing device may change its status to 'Stopped' at any time, and closing a
-- device will progress to 'Stopped' too.
data AudioDeviceStatus
  = Playing -- ^ The 'AudioDevice' is playing.
  | Paused -- ^ The 'AudioDevice' is paused.
  | Stopped -- ^ The 'AudioDevice' is stopped.
  deriving (AudioDeviceStatus
forall a. a -> a -> Bounded a
maxBound :: AudioDeviceStatus
$cmaxBound :: AudioDeviceStatus
minBound :: AudioDeviceStatus
$cminBound :: AudioDeviceStatus
Bounded, Int -> AudioDeviceStatus
AudioDeviceStatus -> Int
AudioDeviceStatus -> [AudioDeviceStatus]
AudioDeviceStatus -> AudioDeviceStatus
AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
AudioDeviceStatus
-> AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
forall a.
(a -> a)
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-> (a -> Int)
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-> Enum a
enumFromThenTo :: AudioDeviceStatus
-> AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
$cenumFromThenTo :: AudioDeviceStatus
-> AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
enumFromTo :: AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
$cenumFromTo :: AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
enumFromThen :: AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
$cenumFromThen :: AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
enumFrom :: AudioDeviceStatus -> [AudioDeviceStatus]
$cenumFrom :: AudioDeviceStatus -> [AudioDeviceStatus]
fromEnum :: AudioDeviceStatus -> Int
$cfromEnum :: AudioDeviceStatus -> Int
toEnum :: Int -> AudioDeviceStatus
$ctoEnum :: Int -> AudioDeviceStatus
pred :: AudioDeviceStatus -> AudioDeviceStatus
$cpred :: AudioDeviceStatus -> AudioDeviceStatus
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$csucc :: AudioDeviceStatus -> AudioDeviceStatus
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forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: AudioDeviceStatus -> AudioDeviceStatus -> Bool
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$c== :: AudioDeviceStatus -> AudioDeviceStatus -> Bool
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AudioDeviceStatus -> AudioDeviceStatus -> Bool
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AudioDeviceStatus -> AudioDeviceStatus -> AudioDeviceStatus
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-> Ord a
min :: AudioDeviceStatus -> AudioDeviceStatus -> AudioDeviceStatus
$cmin :: AudioDeviceStatus -> AudioDeviceStatus -> AudioDeviceStatus
max :: AudioDeviceStatus -> AudioDeviceStatus -> AudioDeviceStatus
$cmax :: AudioDeviceStatus -> AudioDeviceStatus -> AudioDeviceStatus
>= :: AudioDeviceStatus -> AudioDeviceStatus -> Bool
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compare :: AudioDeviceStatus -> AudioDeviceStatus -> Ordering
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Int -> ReadS AudioDeviceStatus
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(Int -> ReadS a)
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readListPrec :: ReadPrec [AudioDeviceStatus]
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readPrec :: ReadPrec AudioDeviceStatus
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readList :: ReadS [AudioDeviceStatus]
$creadList :: ReadS [AudioDeviceStatus]
readsPrec :: Int -> ReadS AudioDeviceStatus
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AudioDeviceStatus -> Constr
(forall b. Data b => b -> b)
-> AudioDeviceStatus -> AudioDeviceStatus
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    (forall d b. Data d => c (d -> b) -> d -> c b)
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    (forall b r. Data b => c (b -> r) -> c r)
    -> (forall r. r -> c r) -> Constr -> c a)
-> (a -> Constr)
-> (a -> DataType)
-> (forall (t :: Type -> Type) (c :: Type -> Type).
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    (forall d. Data d => c (t d)) -> Maybe (c a))
-> (forall (t :: Type -> Type -> Type) (c :: Type -> Type).
    Typeable t =>
    (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c a))
-> ((forall b. Data b => b -> b) -> a -> a)
-> (forall r r'.
    (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> a -> r)
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-> (forall u. (forall d. Data d => d -> u) -> a -> [u])
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    (forall d. Data d => d -> m d) -> a -> m a)
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-> Data a
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(forall d. Data d => c (t d)) -> Maybe (c AudioDeviceStatus)
forall (t :: Type -> Type -> Type) (c :: Type -> Type).
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(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c AudioDeviceStatus)
gmapMo :: forall (m :: Type -> Type).
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-> AudioDeviceStatus -> m AudioDeviceStatus
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-> AudioDeviceStatus -> m AudioDeviceStatus
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(r' -> r -> r)
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$cgmapQr :: forall r r'.
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> AudioDeviceStatus -> r
gmapQl :: forall r r'.
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> AudioDeviceStatus -> r
$cgmapQl :: forall r r'.
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> AudioDeviceStatus -> r
gmapT :: (forall b. Data b => b -> b)
-> AudioDeviceStatus -> AudioDeviceStatus
$cgmapT :: (forall b. Data b => b -> b)
-> AudioDeviceStatus -> AudioDeviceStatus
dataCast2 :: forall (t :: Type -> Type -> Type) (c :: Type -> Type).
Typeable t =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c AudioDeviceStatus)
$cdataCast2 :: forall (t :: Type -> Type -> Type) (c :: Type -> Type).
Typeable t =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c AudioDeviceStatus)
dataCast1 :: forall (t :: Type -> Type) (c :: Type -> Type).
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(forall d. Data d => c (t d)) -> Maybe (c AudioDeviceStatus)
$cdataCast1 :: forall (t :: Type -> Type) (c :: Type -> Type).
Typeable t =>
(forall d. Data d => c (t d)) -> Maybe (c AudioDeviceStatus)
dataTypeOf :: AudioDeviceStatus -> DataType
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toConstr :: AudioDeviceStatus -> Constr
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gunfold :: forall (c :: Type -> Type).
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c AudioDeviceStatus
$cgunfold :: forall (c :: Type -> Type).
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c AudioDeviceStatus
gfoldl :: forall (c :: Type -> Type).
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> AudioDeviceStatus -> c AudioDeviceStatus
$cgfoldl :: forall (c :: Type -> Type).
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> AudioDeviceStatus -> c AudioDeviceStatus
Data, forall x. Rep AudioDeviceStatus x -> AudioDeviceStatus
forall x. AudioDeviceStatus -> Rep AudioDeviceStatus x
forall a.
(forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
$cto :: forall x. Rep AudioDeviceStatus x -> AudioDeviceStatus
$cfrom :: forall x. AudioDeviceStatus -> Rep AudioDeviceStatus x
Generic, Int -> AudioDeviceStatus -> ShowS
[AudioDeviceStatus] -> ShowS
AudioDeviceStatus -> [Char]
forall a.
(Int -> a -> ShowS) -> (a -> [Char]) -> ([a] -> ShowS) -> Show a
showList :: [AudioDeviceStatus] -> ShowS
$cshowList :: [AudioDeviceStatus] -> ShowS
show :: AudioDeviceStatus -> [Char]
$cshow :: AudioDeviceStatus -> [Char]
showsPrec :: Int -> AudioDeviceStatus -> ShowS
$cshowsPrec :: Int -> AudioDeviceStatus -> ShowS
Show, Typeable)

-- | Query the state of an 'AudioDevice'.
audioDeviceStatus :: MonadIO m => AudioDevice -> m AudioDeviceStatus
audioDeviceStatus :: forall (m :: Type -> Type).
MonadIO m =>
AudioDevice -> m AudioDeviceStatus
audioDeviceStatus (AudioDevice Word32
d) = forall (m :: Type -> Type) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$
  forall a b. Show a => Text -> Text -> (a -> Maybe b) -> a -> b
fromC Text
"SDL.Audio.audioDeviceStatus" Text
"SDL_AudioStatus" Word32 -> Maybe AudioDeviceStatus
readStatus forall (f :: Type -> Type) a b. Functor f => (a -> b) -> f a -> f b
<$> forall (m :: Type -> Type). MonadIO m => Word32 -> m Word32
Raw.getAudioDeviceStatus Word32
d
  where
  readStatus :: Word32 -> Maybe AudioDeviceStatus
readStatus Word32
n = case Word32
n of
    Word32
Raw.SDL_AUDIO_PLAYING -> forall a. a -> Maybe a
Just AudioDeviceStatus
Playing
    Word32
Raw.SDL_AUDIO_STOPPED -> forall a. a -> Maybe a
Just AudioDeviceStatus
Stopped
    Word32
Raw.SDL_AUDIO_PAUSED -> forall a. a -> Maybe a
Just AudioDeviceStatus
Paused
    Word32
_ -> forall a. Maybe a
Nothing

-- clearQueuedAudio :: AudioDevice -> IO ()
-- clearQueuedAudio (AudioDevice d) = Raw.clearQueuedAudio d

-- | An abstract description of an audio driver on the host machine.
newtype AudioDriver = AudioDriver Text
  deriving (AudioDriver -> AudioDriver -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: AudioDriver -> AudioDriver -> Bool
$c/= :: AudioDriver -> AudioDriver -> Bool
== :: AudioDriver -> AudioDriver -> Bool
$c== :: AudioDriver -> AudioDriver -> Bool
Eq, Int -> AudioDriver -> ShowS
[AudioDriver] -> ShowS
AudioDriver -> [Char]
forall a.
(Int -> a -> ShowS) -> (a -> [Char]) -> ([a] -> ShowS) -> Show a
showList :: [AudioDriver] -> ShowS
$cshowList :: [AudioDriver] -> ShowS
show :: AudioDriver -> [Char]
$cshow :: AudioDriver -> [Char]
showsPrec :: Int -> AudioDriver -> ShowS
$cshowsPrec :: Int -> AudioDriver -> ShowS
Show, Typeable)

-- | Get the human readable name of an 'AudioDriver'
audioDriverName :: AudioDriver -> Text
audioDriverName :: AudioDriver -> Text
audioDriverName (AudioDriver Text
t) = Text
t

-- | Obtain a list of all possible audio drivers for this system. These drivers
-- can be used to specificially initialize the audio system.
getAudioDrivers :: MonadIO m => m (V.Vector AudioDriver)
getAudioDrivers :: forall (m :: Type -> Type). MonadIO m => m (Vector AudioDriver)
getAudioDrivers = forall (m :: Type -> Type) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ do
  CInt
n <- forall (m :: Type -> Type). MonadIO m => m CInt
Raw.getNumAudioDrivers
  forall (f :: Type -> Type) a b. Functor f => (a -> b) -> f a -> f b
fmap forall a. [a] -> Vector a
V.fromList forall a b. (a -> b) -> a -> b
$
    forall (t :: Type -> Type) (f :: Type -> Type) a b.
(Traversable t, Applicative f) =>
t a -> (a -> f b) -> f (t b)
for [CInt
0 .. (CInt
n forall a. Num a => a -> a -> a
- CInt
1)] forall a b. (a -> b) -> a -> b
$ \CInt
i -> do
      -- TODO This could return null if i is invalid, but it's not an SDL_Error.
      Ptr CChar
cstr <- forall (m :: Type -> Type). MonadIO m => CInt -> m (Ptr CChar)
Raw.getAudioDriver CInt
i
      Text -> AudioDriver
AudioDriver forall b c a. (b -> c) -> (a -> b) -> a -> c
. ByteString -> Text
Text.decodeUtf8 forall (f :: Type -> Type) a b. Functor f => (a -> b) -> f a -> f b
<$> Ptr CChar -> IO ByteString
BS.packCString Ptr CChar
cstr

-- | Explicitly initialize the audio system against a specific
-- 'AudioDriver'. Note that most users will not need to do this, as the normal
-- initialization routines will already take care of this for you.
audioInit :: MonadIO m => AudioDriver -> m ()
audioInit :: forall (m :: Type -> Type). MonadIO m => AudioDriver -> m ()
audioInit (AudioDriver Text
n) = forall (m :: Type -> Type) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a. ByteString -> (Ptr CChar -> IO a) -> IO a
BS.useAsCString (Text -> ByteString
Text.encodeUtf8 Text
n) forall a b. (a -> b) -> a -> b
$
  forall (m :: Type -> Type) a.
(MonadIO m, Num a, Ord a) =>
Text -> Text -> m a -> m ()
throwIfNeg_ Text
"SDL.Audio.audioInit" Text
"SDL_AudioInit" forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall (m :: Type -> Type). MonadIO m => Ptr CChar -> m CInt
Raw.audioInit

-- | Query SDL for the name of the currently initialized audio driver, if
-- possible. This will return 'Nothing' if no driver has been initialized.
currentAudioDriver :: MonadIO m => m (Maybe Text)
currentAudioDriver :: forall (m :: Type -> Type). MonadIO m => m (Maybe Text)
currentAudioDriver =
  forall (m :: Type -> Type) a. MonadIO m => IO a -> m a
liftIO forall a b. (a -> b) -> a -> b
$ forall a b. (Ptr a -> IO b) -> Ptr a -> IO (Maybe b)
maybePeek (forall (f :: Type -> Type) a b. Functor f => (a -> b) -> f a -> f b
fmap ByteString -> Text
Text.decodeUtf8 forall b c a. (b -> c) -> (a -> b) -> a -> c
. Ptr CChar -> IO ByteString
BS.packCString) forall (m :: Type -> Type) a b. Monad m => (a -> m b) -> m a -> m b
=<< forall (m :: Type -> Type). MonadIO m => m (Ptr CChar)
Raw.getCurrentAudioDriver