Safe Haskell	None
Language	Haskell98

Sound.JACK

Contents

general stuff
Exceptions

Description

The Jack module defines types and functions that allows you to use the JACK Audio Connection Kit.

Synopsis

general stuff

data Client #

Handles of Jack clients

newClient #

Arguments

:: ThrowsStatus e
=> String	name of the JACK server
-> String	name of the client
-> ExceptionalT e IO Client

Constructs a new Jack client.

newClientDefault #

Arguments

:: ThrowsStatus e
=> String	name of the client
-> ExceptionalT e IO Client

Creates a new JACK client with the default server

disposeClient :: ThrowsErrno e => Client -> ExceptionalT e IO () #

withClient #

Arguments

:: ThrowsStatus e
=> String	name of the JACK server
-> String	name of the client
-> (Client -> ExceptionalT e IO a)
-> ExceptionalT e IO a

Run a block of code with a newly allocated client. Do not use the client outside the block.

withClientDefault #

Arguments

:: ThrowsStatus e
=> String	name of the client
-> (Client -> ExceptionalT e IO a)
-> ExceptionalT e IO a

clientClose :: ThrowsErrno e => Client -> PortSet -> ExceptionalT e IO () #

closes the given Jack client without causing any trouble (hopefully)

activate :: ThrowsErrno e => Client -> ExceptionalT e IO () #

activates the given Jack client

deactivate :: ThrowsErrno e => Client -> ExceptionalT e IO () #

withActivation :: ThrowsErrno e => Client -> ExceptionalT e IO () -> ExceptionalT e IO () #

class PortType typ #

Jack Port Type

Minimal complete definition

switchPortType

Instances

PortType CFloat #
Methods switchPortType :: f CFloat -> f EventBuffer -> f CFloat

class Direction dir #

Minimal complete definition

switchDir

Instances

Direction Output #
Methods switchDir :: f Input -> f Output -> f Output
Direction Input #
Methods switchDir :: f Input -> f Output -> f Input

data Input #

Type argument for Jack input ports

Instances

Direction Input #
Methods switchDir :: f Input -> f Output -> f Input

data Output #

Type argument for Jack output ports

Instances

Direction Output #
Methods switchDir :: f Input -> f Output -> f Output

data UnknownType #

Type argument for Jack ports where the type of samples transported by the port is unknown.

data UnknownDirection #

Type argument for Jack ports where we do not know whether it is an input or an output port.

data Port typ dir #

newPort #

Arguments

:: (PortType typ, Direction dir, ThrowsPortRegister e)
=> Client	Jack client
-> String	name of the input port
-> ExceptionalT e IO (Port typ dir)

Better use withPort that also handles freeing the port.

disposePort :: (PortType typ, Direction dir, ThrowsErrno e) => Client -> Port typ dir -> ExceptionalT e IO () #

withPort #

Arguments

:: (PortType typ, Direction dir, ThrowsPortRegister e, ThrowsErrno e)
=> Client	Jack client
-> String	name of the input port
-> (Port typ dir -> ExceptionalT e IO a)
-> ExceptionalT e IO a

Creates a new port for the given client and delete it after usage. The port manages audio or MIDI data in input or output direction depending on the Port type. Usually the required port type can be inferred from following actions that use that port.

Do not use the port outside the enclosed block.

data PortSet #

A collection of mixed types of ports. It is mainly needed for freeing all allocated ports.

Instances

Semigroup PortSet #
Methods (<>) :: PortSet -> PortSet -> PortSet # sconcat :: NonEmpty PortSet -> PortSet # stimes :: Integral b => b -> PortSet -> PortSet #
Monoid PortSet #
Methods mempty :: PortSet # mappend :: PortSet -> PortSet -> PortSet # mconcat :: [PortSet] -> PortSet #

setOfPort :: (PortType typ, Direction dir) => Port typ dir -> PortSet #

setOfPorts :: (PortType typ, Direction dir) => [Port typ dir] -> PortSet #

type Process arg = NFrames -> Ptr arg -> IO Errno #

connect :: ThrowsErrno e => Client -> String -> String -> ExceptionalT e IO () #

disconnect :: ThrowsErrno e => Client -> String -> String -> ExceptionalT e IO () #

makeProcess :: Process arg -> IO (FunPtr (Process arg)) #

setProcess :: ThrowsErrno e => Client -> FunPtr (Process arg) -> Ptr arg -> ExceptionalT e IO () #

withProcess :: ThrowsErrno e => Client -> (NFrames -> ExceptionalT Errno IO ()) -> ExceptionalT e IO a -> ExceptionalT e IO a #

The callback function must respond in real-time, i.e. in a bounded amout of time. That is, strictly spoken it must not wait for anything, e.g. it must not wait for locks and it must not allocate memory. In Haskell this is practically impossible because even simplest operations allocate memory. If the callback needs to much time, JACK will shut down your client. The best you can do is to hope that nothing evil happens.

getBufferSize :: Client -> IO Int #

getSampleRate :: Client -> IO Int #

lastFrameTime :: Client -> IO NFrames #

makeClientRegistration :: ClientRegistration arg -> IO (FunPtr (ClientRegistration arg)) #

Create a client registration callback FunPtr.

setClientRegistration :: ThrowsErrno e => Client -> FunPtr (ClientRegistration arg) -> Ptr arg -> ExceptionalT e IO () #

Set the client registration callback.

withClientRegistration :: ThrowsErrno e => Client -> (String -> Bool -> IO ()) -> ExceptionalT e IO a -> ExceptionalT e IO a #

data PortId #

Instances

Eq PortId #
Methods (==) :: PortId -> PortId -> Bool # (/=) :: PortId -> PortId -> Bool #
Ord PortId #
Methods compare :: PortId -> PortId -> Ordering # (<) :: PortId -> PortId -> Bool # (<=) :: PortId -> PortId -> Bool # (>) :: PortId -> PortId -> Bool # (>=) :: PortId -> PortId -> Bool # max :: PortId -> PortId -> PortId # min :: PortId -> PortId -> PortId #
Show PortId #
Methods showsPrec :: Int -> PortId -> ShowS # show :: PortId -> String # showList :: [PortId] -> ShowS #

makePortRegistration :: PortRegistration arg -> IO (FunPtr (PortRegistration arg)) #

Create a port registration callback FunPtr.

setPortRegistration :: ThrowsErrno e => Client -> FunPtr (PortRegistration arg) -> Ptr arg -> ExceptionalT e IO () #

Set the port registration callback.

withPortRegistration :: ThrowsErrno e => Client -> (PortId -> Bool -> IO ()) -> ExceptionalT e IO a -> ExceptionalT e IO a #

makePortConnect :: PortConnect arg -> IO (FunPtr (PortConnect arg)) #

Create a port connect callback FunPtr.

setPortConnect :: ThrowsErrno e => Client -> FunPtr (PortConnect arg) -> Ptr arg -> ExceptionalT e IO () #

Set the port connect callback.

withPortConnect :: ThrowsErrno e => Client -> (PortId -> PortId -> Bool -> IO ()) -> ExceptionalT e IO a -> ExceptionalT e IO a #

portById :: Client -> PortId -> IO (Port UnknownType UnknownDirection) #

portByName :: Client -> String -> IO (Port UnknownType UnknownDirection) #

portName :: Port typ dir -> IO String #

Return the full port name, including the client_name: prefix.

portShortName :: Port typ dir -> IO String #

Return the short port name, not including the client_name: prefix.

portAliases :: Port typ dir -> IO [String] #

Return the port aliases, including the client_name: prefixes.

This is especially useful for external midi devices, as the alias names are usually more descriptive than system:midi_capture_1.

getPorts #

Arguments

:: Client	the Jack client
-> IO [String]	the names as a list of strings

Returns the names of all existing ports.

portGetAllConnections :: Client -> Port typ dir -> IO [String] #

Return all the port names a given port is connected to.

This function must not be called from a JACK event callback.

narrowPort :: (PortType typ, Direction dir, ThrowsPortMismatch e) => Port UnknownType UnknownDirection -> ExceptionalT e IO (Port typ dir) #

narrowPortType :: (PortType typ, ThrowsPortMismatch e) => Port UnknownType dir -> ExceptionalT e IO (Port typ dir) #

narrowPortDirection :: (Direction dir, ThrowsPortMismatch e) => Port typ UnknownDirection -> ExceptionalT e IO (Port typ dir) #

switchUnknownTypePort :: ThrowsPortMismatch e => Port UnknownType dir -> (Port CFloat dir -> ExceptionalT e IO a) -> (Port EventBuffer dir -> ExceptionalT e IO a) -> ExceptionalT e IO a #

switchUnknownDirectionPort :: ThrowsPortMismatch e => Port typ UnknownDirection -> (Port typ Input -> ExceptionalT e IO a) -> (Port typ Output -> ExceptionalT e IO a) -> ExceptionalT e IO a #

newtype NFrames #

represents absolute frame time

Constructors

NFrames Word32

Instances

Eq NFrames #
Methods (==) :: NFrames -> NFrames -> Bool # (/=) :: NFrames -> NFrames -> Bool #
Ord NFrames #
Methods compare :: NFrames -> NFrames -> Ordering # (<) :: NFrames -> NFrames -> Bool # (<=) :: NFrames -> NFrames -> Bool # (>) :: NFrames -> NFrames -> Bool # (>=) :: NFrames -> NFrames -> Bool # max :: NFrames -> NFrames -> NFrames # min :: NFrames -> NFrames -> NFrames #
Show NFrames #
Methods showsPrec :: Int -> NFrames -> ShowS # show :: NFrames -> String # showList :: [NFrames] -> ShowS #
Ix NFrames #
Methods range :: (NFrames, NFrames) -> [NFrames] # index :: (NFrames, NFrames) -> NFrames -> Int # unsafeIndex :: (NFrames, NFrames) -> NFrames -> Int inRange :: (NFrames, NFrames) -> NFrames -> Bool # rangeSize :: (NFrames, NFrames) -> Int # unsafeRangeSize :: (NFrames, NFrames) -> Int
Semigroup NFrames #
Methods (<>) :: NFrames -> NFrames -> NFrames # sconcat :: NonEmpty NFrames -> NFrames # stimes :: Integral b => b -> NFrames -> NFrames #
Monoid NFrames #
Methods mempty :: NFrames # mappend :: NFrames -> NFrames -> NFrames # mconcat :: [NFrames] -> NFrames #
C NFrames #
Methods split :: NFrames -> NFrames -> (NFrames, (Bool, NFrames)) #

nframesIndices :: NFrames -> [NFrames] #

nframesBounds :: NFrames -> (NFrames, NFrames) #

quit :: MVar () -> Client -> PortSet -> IO () #

Deprecated: Write your own function instead.

waitForBreakAndClose :: Client -> PortSet -> IO () #

Deprecated: Write your own function instead.

waitForBreak :: IO () #

Exceptions

handleExceptions :: ExceptionalT All IO () -> IO () #