Safe Haskell	None
Language	Haskell2010

SDL.Audio

Contents

Managing AudioDevices
AudioSpec
Audio Drivers
Explicit Initialization

Description

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

Synopsis

data AudioDevice
openAudioDevice :: MonadIO m => OpenDeviceSpec -> m (AudioDevice, AudioSpec)
closeAudioDevice :: MonadIO m => AudioDevice -> m ()
data OpenDeviceSpec = forall sampleType. OpenDeviceSpec {
- openDeviceFreq :: !(Changeable CInt)
- openDeviceFormat :: !(Changeable (AudioFormat sampleType))
- openDeviceChannels :: !(Changeable Channels)
- openDeviceSamples :: !Word16
- openDeviceCallback :: forall actualSampleType. AudioFormat actualSampleType -> IOVector actualSampleType -> IO ()
- openDeviceUsage :: !AudioDeviceUsage
- openDeviceName :: !(Maybe Text)
}
data AudioDeviceUsage
- = ForPlayback
- | ForCapture
data Channels
- = Mono
- | Stereo
- | Quad
- | FivePointOne
data Changeable a
- = Mandate !a
- | Desire !a
setAudioDeviceLocked :: MonadIO m => AudioDevice -> LockState -> m ()
data LockState
- = Locked
- | Unlocked
data PlaybackState
- = Pause
- | Play
setAudioDevicePlaybackState :: MonadIO m => AudioDevice -> PlaybackState -> m ()
data AudioDeviceStatus
- = Playing
- | Paused
- | Stopped
audioDeviceStatus :: MonadIO m => AudioDevice -> m AudioDeviceStatus
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
getAudioDeviceNames :: MonadIO m => AudioDeviceUsage -> m (Maybe (Vector Text))
data AudioSpec
audioSpecFreq :: AudioSpec -> CInt
audioSpecFormat :: AudioSpec -> AudioFormat sampleType
audioSpecChannels :: AudioSpec -> Channels
audioSpecSilence :: AudioSpec -> Word8
audioSpecSize :: AudioSpec -> Word32
audioSpecCallback :: AudioSpec -> AudioFormat sampleType -> IOVector sampleType -> IO ()
getAudioDrivers :: MonadIO m => m (Vector AudioDriver)
currentAudioDriver :: MonadIO m => m (Maybe Text)
data AudioDriver
audioDriverName :: AudioDriver -> Text
audioInit :: MonadIO m => AudioDriver -> m ()

Managing `AudioDevice`s

data AudioDevice Source #

An open audio device. These can be created via openAudioDevice and should be closed with closeAudioDevice

Instances

Instances details

Eq AudioDevice Source #
Instance details Defined in SDL.Audio Methods (==) :: AudioDevice -> AudioDevice -> Bool (/=) :: AudioDevice -> AudioDevice -> Bool

Opening and Closing `AudioDevice`s

openAudioDevice :: MonadIO m => OpenDeviceSpec -> m (AudioDevice, AudioSpec) Source #

Attempt to open the closest matching AudioDevice, as specified by the given OpenDeviceSpec.

See SDL_OpenAudioDevice for C documentation.

closeAudioDevice :: MonadIO m => AudioDevice -> m () Source #

See SDL_CloseAudioDevice for C documentation.

data OpenDeviceSpec Source #

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.

Constructors

forall sampleType. OpenDeviceSpec

Fields

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.
openDeviceChannels :: !(Changeable Channels)
The amount of audio channels.
openDeviceSamples :: !Word16
Output audio buffer size in samples. This should be a power of 2.
openDeviceCallback :: forall actualSampleType. AudioFormat actualSampleType -> IOVector actualSampleType -> IO ()
A callback to invoke whenever new sample data is required. The callback will be passed a single MVector that must be filled with audio data.
openDeviceUsage :: !AudioDeviceUsage
How you intend to use the opened AudioDevice - either for outputting or capturing audio.
openDeviceName :: !(Maybe Text)
The name of the AudioDevice that should be opened. If Nothing, any suitable AudioDevice will be used.

data AudioDeviceUsage Source #

How you intend to use an AudioDevice

Constructors

ForPlayback	The device will be used for sample playback.
ForCapture	The device will be used for sample capture.

Instances

Instances details

Bounded AudioDeviceUsage Source #
Instance details Defined in SDL.Audio Methods minBound :: AudioDeviceUsage maxBound :: AudioDeviceUsage
Enum AudioDeviceUsage Source #
Instance details Defined in SDL.Audio Methods succ :: AudioDeviceUsage -> AudioDeviceUsage pred :: AudioDeviceUsage -> AudioDeviceUsage toEnum :: Int -> AudioDeviceUsage fromEnum :: AudioDeviceUsage -> Int enumFrom :: AudioDeviceUsage -> [AudioDeviceUsage] enumFromThen :: AudioDeviceUsage -> AudioDeviceUsage -> [AudioDeviceUsage] enumFromTo :: AudioDeviceUsage -> AudioDeviceUsage -> [AudioDeviceUsage] enumFromThenTo :: AudioDeviceUsage -> AudioDeviceUsage -> AudioDeviceUsage -> [AudioDeviceUsage]
Eq AudioDeviceUsage Source #
Instance details Defined in SDL.Audio Methods (==) :: AudioDeviceUsage -> AudioDeviceUsage -> Bool (/=) :: AudioDeviceUsage -> AudioDeviceUsage -> Bool
Data AudioDeviceUsage Source #
Instance details Defined in SDL.Audio Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> AudioDeviceUsage -> c AudioDeviceUsage gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c AudioDeviceUsage toConstr :: AudioDeviceUsage -> Constr dataTypeOf :: AudioDeviceUsage -> DataType dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c AudioDeviceUsage) dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c AudioDeviceUsage) gmapT :: (forall b. Data b => b -> b) -> AudioDeviceUsage -> AudioDeviceUsage gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> AudioDeviceUsage -> r gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> AudioDeviceUsage -> r gmapQ :: (forall d. Data d => d -> u) -> AudioDeviceUsage -> [u] gmapQi :: Int -> (forall d. Data d => d -> u) -> AudioDeviceUsage -> u gmapM :: Monad m => (forall d. Data d => d -> m d) -> AudioDeviceUsage -> m AudioDeviceUsage gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> AudioDeviceUsage -> m AudioDeviceUsage gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> AudioDeviceUsage -> m AudioDeviceUsage
Ord AudioDeviceUsage Source #
Instance details Defined in SDL.Audio Methods compare :: AudioDeviceUsage -> AudioDeviceUsage -> Ordering (<) :: AudioDeviceUsage -> AudioDeviceUsage -> Bool (<=) :: AudioDeviceUsage -> AudioDeviceUsage -> Bool (>) :: AudioDeviceUsage -> AudioDeviceUsage -> Bool (>=) :: AudioDeviceUsage -> AudioDeviceUsage -> Bool max :: AudioDeviceUsage -> AudioDeviceUsage -> AudioDeviceUsage min :: AudioDeviceUsage -> AudioDeviceUsage -> AudioDeviceUsage
Read AudioDeviceUsage Source #
Instance details Defined in SDL.Audio Methods readsPrec :: Int -> ReadS AudioDeviceUsage readList :: ReadS [AudioDeviceUsage] readPrec :: ReadPrec AudioDeviceUsage readListPrec :: ReadPrec [AudioDeviceUsage]
Show AudioDeviceUsage Source #
Instance details Defined in SDL.Audio Methods showsPrec :: Int -> AudioDeviceUsage -> ShowS show :: AudioDeviceUsage -> String showList :: [AudioDeviceUsage] -> ShowS
Generic AudioDeviceUsage Source #
Instance details Defined in SDL.Audio Associated Types type Rep AudioDeviceUsage :: Type -> Type Methods from :: AudioDeviceUsage -> Rep AudioDeviceUsage x to :: Rep AudioDeviceUsage x -> AudioDeviceUsage
type Rep AudioDeviceUsage Source #
Instance details Defined in SDL.Audio type Rep AudioDeviceUsage = D1 ('MetaData "AudioDeviceUsage" "SDL.Audio" "sdl2-2.5.2.0-Cx4Ipj2keSJFpflqvJYEGr" 'False) (C1 ('MetaCons "ForPlayback" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "ForCapture" 'PrefixI 'False) (U1 :: Type -> Type))

data Channels Source #

How many channels audio should be played on

Constructors

Mono	A single speaker configuration
Stereo	A traditional left/right stereo system
Quad
FivePointOne	1 surround sound

Instances

Instances details

Bounded Channels Source #
Instance details Defined in SDL.Audio Methods minBound :: Channels maxBound :: Channels
Enum Channels Source #
Instance details Defined in SDL.Audio Methods succ :: Channels -> Channels pred :: Channels -> Channels toEnum :: Int -> Channels fromEnum :: Channels -> Int enumFrom :: Channels -> [Channels] enumFromThen :: Channels -> Channels -> [Channels] enumFromTo :: Channels -> Channels -> [Channels] enumFromThenTo :: Channels -> Channels -> Channels -> [Channels]
Eq Channels Source #
Instance details Defined in SDL.Audio Methods (==) :: Channels -> Channels -> Bool (/=) :: Channels -> Channels -> Bool
Data Channels Source #
Instance details Defined in SDL.Audio Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Channels -> c Channels gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Channels toConstr :: Channels -> Constr dataTypeOf :: Channels -> DataType dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Channels) dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Channels) gmapT :: (forall b. Data b => b -> b) -> Channels -> Channels gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Channels -> r gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Channels -> r gmapQ :: (forall d. Data d => d -> u) -> Channels -> [u] gmapQi :: Int -> (forall d. Data d => d -> u) -> Channels -> u gmapM :: Monad m => (forall d. Data d => d -> m d) -> Channels -> m Channels gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Channels -> m Channels gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Channels -> m Channels
Ord Channels Source #
Instance details Defined in SDL.Audio Methods compare :: Channels -> Channels -> Ordering (<) :: Channels -> Channels -> Bool (<=) :: Channels -> Channels -> Bool (>) :: Channels -> Channels -> Bool (>=) :: Channels -> Channels -> Bool max :: Channels -> Channels -> Channels min :: Channels -> Channels -> Channels
Read Channels Source #
Instance details Defined in SDL.Audio Methods readsPrec :: Int -> ReadS Channels readList :: ReadS [Channels] readPrec :: ReadPrec Channels readListPrec :: ReadPrec [Channels]
Show Channels Source #
Instance details Defined in SDL.Audio Methods showsPrec :: Int -> Channels -> ShowS show :: Channels -> String showList :: [Channels] -> ShowS
Generic Channels Source #
Instance details Defined in SDL.Audio Associated Types type Rep Channels :: Type -> Type Methods from :: Channels -> Rep Channels x to :: Rep Channels x -> Channels
type Rep Channels Source #
Instance details Defined in SDL.Audio type Rep Channels = D1 ('MetaData "Channels" "SDL.Audio" "sdl2-2.5.2.0-Cx4Ipj2keSJFpflqvJYEGr" 'False) ((C1 ('MetaCons "Mono" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "Stereo" 'PrefixI 'False) (U1 :: Type -> Type)) :+: (C1 ('MetaCons "Quad" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "FivePointOne" 'PrefixI 'False) (U1 :: Type -> Type)))

data Changeable a Source #

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).

Constructors

Mandate !a	`Mandate` this exact property value, and fail if a matching audio device cannot be found.
Desire !a	`Desire` this property value, but allow other audio devices to be opened.

Instances

Instances details

Functor Changeable Source #
Instance details Defined in SDL.Audio Methods fmap :: (a -> b) -> Changeable a -> Changeable b (<$) :: a -> Changeable b -> Changeable a
Foldable Changeable Source #
Instance details Defined in SDL.Audio Methods fold :: Monoid m => Changeable m -> m foldMap :: Monoid m => (a -> m) -> Changeable a -> m foldMap' :: Monoid m => (a -> m) -> Changeable a -> m foldr :: (a -> b -> b) -> b -> Changeable a -> b foldr' :: (a -> b -> b) -> b -> Changeable a -> b foldl :: (b -> a -> b) -> b -> Changeable a -> b foldl' :: (b -> a -> b) -> b -> Changeable a -> b foldr1 :: (a -> a -> a) -> Changeable a -> a foldl1 :: (a -> a -> a) -> Changeable a -> a toList :: Changeable a -> [a] null :: Changeable a -> Bool length :: Changeable a -> Int elem :: Eq a => a -> Changeable a -> Bool maximum :: Ord a => Changeable a -> a minimum :: Ord a => Changeable a -> a sum :: Num a => Changeable a -> a product :: Num a => Changeable a -> a
Traversable Changeable Source #
Instance details Defined in SDL.Audio Methods traverse :: Applicative f => (a -> f b) -> Changeable a -> f (Changeable b) sequenceA :: Applicative f => Changeable (f a) -> f (Changeable a) mapM :: Monad m => (a -> m b) -> Changeable a -> m (Changeable b) sequence :: Monad m => Changeable (m a) -> m (Changeable a)
Eq a => Eq (Changeable a) Source #
Instance details Defined in SDL.Audio Methods (==) :: Changeable a -> Changeable a -> Bool (/=) :: Changeable a -> Changeable a -> Bool
Data a => Data (Changeable a) Source #
Instance details Defined in SDL.Audio Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Changeable a -> c (Changeable a) gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Changeable a) toConstr :: Changeable a -> Constr dataTypeOf :: Changeable a -> DataType dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Changeable a)) dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Changeable a)) gmapT :: (forall b. Data b => b -> b) -> Changeable a -> Changeable a gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Changeable a -> r gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Changeable a -> r gmapQ :: (forall d. Data d => d -> u) -> Changeable a -> [u] gmapQi :: Int -> (forall d. Data d => d -> u) -> Changeable a -> u gmapM :: Monad m => (forall d. Data d => d -> m d) -> Changeable a -> m (Changeable a) gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Changeable a -> m (Changeable a) gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Changeable a -> m (Changeable a)
Read a => Read (Changeable a) Source #
Instance details Defined in SDL.Audio Methods readsPrec :: Int -> ReadS (Changeable a) readList :: ReadS [Changeable a] readPrec :: ReadPrec (Changeable a) readListPrec :: ReadPrec [Changeable a]
Show a => Show (Changeable a) Source #
Instance details Defined in SDL.Audio Methods showsPrec :: Int -> Changeable a -> ShowS show :: Changeable a -> String showList :: [Changeable a] -> ShowS
Generic (Changeable a) Source #
Instance details Defined in SDL.Audio Associated Types type Rep (Changeable a) :: Type -> Type Methods from :: Changeable a -> Rep (Changeable a) x to :: Rep (Changeable a) x -> Changeable a
type Rep (Changeable a) Source #
Instance details Defined in SDL.Audio type Rep (Changeable a) = D1 ('MetaData "Changeable" "SDL.Audio" "sdl2-2.5.2.0-Cx4Ipj2keSJFpflqvJYEGr" 'False) (C1 ('MetaCons "Mandate" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 a)) :+: C1 ('MetaCons "Desire" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 a)))

Working with Opened Devices

Locking `AudioDevice`s

setAudioDeviceLocked :: MonadIO m => AudioDevice -> LockState -> m () Source #

Lock an AudioDevice such that its associated callback will not be called until the device is unlocked.

data LockState Source #

Whether a device should be locked or unlocked.

Constructors

Locked	Lock the device, preventing the callback from producing data.
Unlocked	Unlock the device, resuming calls to the callback.

Instances

Instances details

Bounded LockState Source #
Instance details Defined in SDL.Audio Methods minBound :: LockState maxBound :: LockState
Enum LockState Source #
Instance details Defined in SDL.Audio Methods succ :: LockState -> LockState pred :: LockState -> LockState toEnum :: Int -> LockState fromEnum :: LockState -> Int enumFrom :: LockState -> [LockState] enumFromThen :: LockState -> LockState -> [LockState] enumFromTo :: LockState -> LockState -> [LockState] enumFromThenTo :: LockState -> LockState -> LockState -> [LockState]
Eq LockState Source #
Instance details Defined in SDL.Audio Methods (==) :: LockState -> LockState -> Bool (/=) :: LockState -> LockState -> Bool
Data LockState Source #
Instance details Defined in SDL.Audio Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> LockState -> c LockState gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c LockState toConstr :: LockState -> Constr dataTypeOf :: LockState -> DataType dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c LockState) dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c LockState) gmapT :: (forall b. Data b => b -> b) -> LockState -> LockState gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> LockState -> r gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> LockState -> r gmapQ :: (forall d. Data d => d -> u) -> LockState -> [u] gmapQi :: Int -> (forall d. Data d => d -> u) -> LockState -> u gmapM :: Monad m => (forall d. Data d => d -> m d) -> LockState -> m LockState gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> LockState -> m LockState gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> LockState -> m LockState
Ord LockState Source #
Instance details Defined in SDL.Audio Methods compare :: LockState -> LockState -> Ordering (<) :: LockState -> LockState -> Bool (<=) :: LockState -> LockState -> Bool (>) :: LockState -> LockState -> Bool (>=) :: LockState -> LockState -> Bool max :: LockState -> LockState -> LockState min :: LockState -> LockState -> LockState
Read LockState Source #
Instance details Defined in SDL.Audio Methods readsPrec :: Int -> ReadS LockState readList :: ReadS [LockState] readPrec :: ReadPrec LockState readListPrec :: ReadPrec [LockState]
Show LockState Source #
Instance details Defined in SDL.Audio Methods showsPrec :: Int -> LockState -> ShowS show :: LockState -> String showList :: [LockState] -> ShowS
Generic LockState Source #
Instance details Defined in SDL.Audio Associated Types type Rep LockState :: Type -> Type Methods from :: LockState -> Rep LockState x to :: Rep LockState x -> LockState
type Rep LockState Source #
Instance details Defined in SDL.Audio type Rep LockState = D1 ('MetaData "LockState" "SDL.Audio" "sdl2-2.5.2.0-Cx4Ipj2keSJFpflqvJYEGr" 'False) (C1 ('MetaCons "Locked" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "Unlocked" 'PrefixI 'False) (U1 :: Type -> Type))

Switching Playback States

data PlaybackState Source #

Whether to allow an AudioDevice to play sound or remain paused.

Constructors

Pause	Pause the `AudioDevice`, which will stop producing/capturing audio.
Play	Resume the `AudioDevice`.

Instances

Instances details

Bounded PlaybackState Source #
Instance details Defined in SDL.Audio Methods minBound :: PlaybackState maxBound :: PlaybackState
Enum PlaybackState Source #
Instance details Defined in SDL.Audio Methods succ :: PlaybackState -> PlaybackState pred :: PlaybackState -> PlaybackState toEnum :: Int -> PlaybackState fromEnum :: PlaybackState -> Int enumFrom :: PlaybackState -> [PlaybackState] enumFromThen :: PlaybackState -> PlaybackState -> [PlaybackState] enumFromTo :: PlaybackState -> PlaybackState -> [PlaybackState] enumFromThenTo :: PlaybackState -> PlaybackState -> PlaybackState -> [PlaybackState]
Eq PlaybackState Source #
Instance details Defined in SDL.Audio Methods (==) :: PlaybackState -> PlaybackState -> Bool (/=) :: PlaybackState -> PlaybackState -> Bool
Data PlaybackState Source #
Instance details Defined in SDL.Audio Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> PlaybackState -> c PlaybackState gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c PlaybackState toConstr :: PlaybackState -> Constr dataTypeOf :: PlaybackState -> DataType dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c PlaybackState) dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c PlaybackState) gmapT :: (forall b. Data b => b -> b) -> PlaybackState -> PlaybackState gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> PlaybackState -> r gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> PlaybackState -> r gmapQ :: (forall d. Data d => d -> u) -> PlaybackState -> [u] gmapQi :: Int -> (forall d. Data d => d -> u) -> PlaybackState -> u gmapM :: Monad m => (forall d. Data d => d -> m d) -> PlaybackState -> m PlaybackState gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> PlaybackState -> m PlaybackState gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> PlaybackState -> m PlaybackState
Ord PlaybackState Source #
Instance details Defined in SDL.Audio Methods compare :: PlaybackState -> PlaybackState -> Ordering (<) :: PlaybackState -> PlaybackState -> Bool (<=) :: PlaybackState -> PlaybackState -> Bool (>) :: PlaybackState -> PlaybackState -> Bool (>=) :: PlaybackState -> PlaybackState -> Bool max :: PlaybackState -> PlaybackState -> PlaybackState min :: PlaybackState -> PlaybackState -> PlaybackState
Read PlaybackState Source #
Instance details Defined in SDL.Audio Methods readsPrec :: Int -> ReadS PlaybackState readList :: ReadS [PlaybackState] readPrec :: ReadPrec PlaybackState readListPrec :: ReadPrec [PlaybackState]
Show PlaybackState Source #
Instance details Defined in SDL.Audio Methods showsPrec :: Int -> PlaybackState -> ShowS show :: PlaybackState -> String showList :: [PlaybackState] -> ShowS
Generic PlaybackState Source #
Instance details Defined in SDL.Audio Associated Types type Rep PlaybackState :: Type -> Type Methods from :: PlaybackState -> Rep PlaybackState x to :: Rep PlaybackState x -> PlaybackState
type Rep PlaybackState Source #
Instance details Defined in SDL.Audio type Rep PlaybackState = D1 ('MetaData "PlaybackState" "SDL.Audio" "sdl2-2.5.2.0-Cx4Ipj2keSJFpflqvJYEGr" 'False) (C1 ('MetaCons "Pause" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "Play" 'PrefixI 'False) (U1 :: Type -> Type))

setAudioDevicePlaybackState :: MonadIO m => AudioDevice -> PlaybackState -> m () Source #

Change the playback state of an AudioDevice.

Querying an `AudioDevice`s Status.

data AudioDeviceStatus Source #

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.

Constructors

Playing	The `AudioDevice` is playing.
Paused	The `AudioDevice` is paused.
Stopped	The `AudioDevice` is stopped.

Instances

Instances details

Bounded AudioDeviceStatus Source #
Instance details Defined in SDL.Audio Methods minBound :: AudioDeviceStatus maxBound :: AudioDeviceStatus
Enum AudioDeviceStatus Source #
Instance details Defined in SDL.Audio Methods succ :: AudioDeviceStatus -> AudioDeviceStatus pred :: AudioDeviceStatus -> AudioDeviceStatus toEnum :: Int -> AudioDeviceStatus fromEnum :: AudioDeviceStatus -> Int enumFrom :: AudioDeviceStatus -> [AudioDeviceStatus] enumFromThen :: AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus] enumFromTo :: AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus] enumFromThenTo :: AudioDeviceStatus -> AudioDeviceStatus -> AudioDeviceStatus -> [AudioDeviceStatus]
Eq AudioDeviceStatus Source #
Instance details Defined in SDL.Audio Methods (==) :: AudioDeviceStatus -> AudioDeviceStatus -> Bool (/=) :: AudioDeviceStatus -> AudioDeviceStatus -> Bool
Data AudioDeviceStatus Source #
Instance details Defined in SDL.Audio Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> AudioDeviceStatus -> c AudioDeviceStatus gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c AudioDeviceStatus toConstr :: AudioDeviceStatus -> Constr dataTypeOf :: AudioDeviceStatus -> DataType dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c AudioDeviceStatus) dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c AudioDeviceStatus) gmapT :: (forall b. Data b => b -> b) -> AudioDeviceStatus -> AudioDeviceStatus gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> AudioDeviceStatus -> r gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> AudioDeviceStatus -> r gmapQ :: (forall d. Data d => d -> u) -> AudioDeviceStatus -> [u] gmapQi :: Int -> (forall d. Data d => d -> u) -> AudioDeviceStatus -> u gmapM :: Monad m => (forall d. Data d => d -> m d) -> AudioDeviceStatus -> m AudioDeviceStatus gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> AudioDeviceStatus -> m AudioDeviceStatus gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> AudioDeviceStatus -> m AudioDeviceStatus
Ord AudioDeviceStatus Source #
Instance details Defined in SDL.Audio Methods compare :: AudioDeviceStatus -> AudioDeviceStatus -> Ordering (<) :: AudioDeviceStatus -> AudioDeviceStatus -> Bool (<=) :: AudioDeviceStatus -> AudioDeviceStatus -> Bool (>) :: AudioDeviceStatus -> AudioDeviceStatus -> Bool (>=) :: AudioDeviceStatus -> AudioDeviceStatus -> Bool max :: AudioDeviceStatus -> AudioDeviceStatus -> AudioDeviceStatus min :: AudioDeviceStatus -> AudioDeviceStatus -> AudioDeviceStatus
Read AudioDeviceStatus Source #
Instance details Defined in SDL.Audio Methods readsPrec :: Int -> ReadS AudioDeviceStatus readList :: ReadS [AudioDeviceStatus] readPrec :: ReadPrec AudioDeviceStatus readListPrec :: ReadPrec [AudioDeviceStatus]
Show AudioDeviceStatus Source #
Instance details Defined in SDL.Audio Methods showsPrec :: Int -> AudioDeviceStatus -> ShowS show :: AudioDeviceStatus -> String showList :: [AudioDeviceStatus] -> ShowS
Generic AudioDeviceStatus Source #
Instance details Defined in SDL.Audio Associated Types type Rep AudioDeviceStatus :: Type -> Type Methods from :: AudioDeviceStatus -> Rep AudioDeviceStatus x to :: Rep AudioDeviceStatus x -> AudioDeviceStatus
type Rep AudioDeviceStatus Source #
Instance details Defined in SDL.Audio type Rep AudioDeviceStatus = D1 ('MetaData "AudioDeviceStatus" "SDL.Audio" "sdl2-2.5.2.0-Cx4Ipj2keSJFpflqvJYEGr" 'False) (C1 ('MetaCons "Playing" 'PrefixI 'False) (U1 :: Type -> Type) :+: (C1 ('MetaCons "Paused" 'PrefixI 'False) (U1 :: Type -> Type) :+: C1 ('MetaCons "Stopped" 'PrefixI 'False) (U1 :: Type -> Type)))

audioDeviceStatus :: MonadIO m => AudioDevice -> m AudioDeviceStatus Source #

Query the state of an AudioDevice.

`AudioFormat`

data AudioFormat sampleType where Source #

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.

Constructors

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

Instances

Instances details

Eq (AudioFormat sampleType) Source #
Instance details Defined in SDL.Audio Methods (==) :: AudioFormat sampleType -> AudioFormat sampleType -> Bool (/=) :: AudioFormat sampleType -> AudioFormat sampleType -> Bool
Ord (AudioFormat sampleType) Source #
Instance details Defined in SDL.Audio Methods compare :: AudioFormat sampleType -> AudioFormat sampleType -> Ordering (<) :: AudioFormat sampleType -> AudioFormat sampleType -> Bool (<=) :: AudioFormat sampleType -> AudioFormat sampleType -> Bool (>) :: AudioFormat sampleType -> AudioFormat sampleType -> Bool (>=) :: AudioFormat sampleType -> AudioFormat sampleType -> Bool max :: AudioFormat sampleType -> AudioFormat sampleType -> AudioFormat sampleType min :: AudioFormat sampleType -> AudioFormat sampleType -> AudioFormat sampleType
Show (AudioFormat sampleType) Source #
Instance details Defined in SDL.Audio Methods showsPrec :: Int -> AudioFormat sampleType -> ShowS show :: AudioFormat sampleType -> String showList :: [AudioFormat sampleType] -> ShowS

Enumerating `AudioDevice`s

getAudioDeviceNames :: MonadIO m => AudioDeviceUsage -> m (Maybe (Vector Text)) Source #

Enumerate all AudioDevices 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.

`AudioSpec`

data AudioSpec Source #

AudioSpec is the concrete specification of how an AudioDevice was sucessfully opened. Unlike OpenDeviceSpec, which specifies what you want, AudioSpec specifies what you have.

audioSpecFreq :: AudioSpec -> CInt Source #

DSP frequency (samples per second)

audioSpecFormat :: AudioSpec -> AudioFormat sampleType Source #

Audio data format

audioSpecChannels :: AudioSpec -> Channels Source #

Number of separate sound channels

audioSpecSilence :: AudioSpec -> Word8 Source #

Calculated udio buffer silence value

audioSpecSize :: AudioSpec -> Word32 Source #

Calculated audio buffer size in bytes

audioSpecCallback :: AudioSpec -> AudioFormat sampleType -> IOVector sampleType -> IO () Source #

The function to call when the audio device needs more data

Audio Drivers

getAudioDrivers :: MonadIO m => m (Vector AudioDriver) Source #

Obtain a list of all possible audio drivers for this system. These drivers can be used to specificially initialize the audio system.

currentAudioDriver :: MonadIO m => m (Maybe Text) Source #

Query SDL for the name of the currently initialized audio driver, if possible. This will return Nothing if no driver has been initialized.

data AudioDriver Source #

An abstract description of an audio driver on the host machine.

Instances

Instances details

Eq AudioDriver Source #
Instance details Defined in SDL.Audio Methods (==) :: AudioDriver -> AudioDriver -> Bool (/=) :: AudioDriver -> AudioDriver -> Bool
Show AudioDriver Source #
Instance details Defined in SDL.Audio Methods showsPrec :: Int -> AudioDriver -> ShowS show :: AudioDriver -> String showList :: [AudioDriver] -> ShowS

audioDriverName :: AudioDriver -> Text Source #

Get the human readable name of an AudioDriver

Explicit Initialization

audioInit :: MonadIO m => AudioDriver -> m () Source #

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.

Managing AudioDevices

Instances

Opening and Closing AudioDevices

Instances

Instances

Instances

Working with Opened Devices

Locking AudioDevices

Instances

Switching Playback States

Instances

Querying an AudioDevices Status.

Instances

AudioFormat

Instances

Enumerating AudioDevices

AudioSpec

Audio Drivers

Instances

Explicit Initialization

Managing `AudioDevice`s

Opening and Closing `AudioDevice`s

Locking `AudioDevice`s

Querying an `AudioDevice`s Status.

`AudioFormat`

Enumerating `AudioDevice`s

`AudioSpec`