Sound.JACK.MIDI

Documentation

data RawEvent

Represents a raw JACK MIDI event

Instances

Eq RawEvent

Ord RawEvent

Show RawEvent

Storable RawEvent

rawEvent

Arguments

:: NFrames

Sample index at which event is valid (relative to cycle start)

-> ByteString

Raw MIDI data

-> RawEvent

Smart constructor for a raw MIDI event.

rawEventTime :: RawEvent -> NFrames

rawEventBuffer :: RawEvent -> ByteString

toRawEventFunction

Arguments

:: (NFrames -> (NFrames, T) -> IO (NFrames, T))

transforms Sound.MIDI.File.Event

-> NFrames -> RawEvent -> IO RawEvent

transforms Sound.JACK.MIDI.RawEvent

Converts high level MIDI Event transformation functions into raw MIDI Event transformation functions

type Port = Port EventBuffer

withPort

Arguments

:: (Direction dir, ThrowsPortRegister e, ThrowsErrno e)

=> Client

Jack client

-> String

name of the input port

-> (Port dir -> ExceptionalT e IO a)

-> ExceptionalT e IO a

setProcess

Arguments

:: ThrowsErrno e

=> Client

the JACK Client, whose process loop will be set

-> Port Input

where to get events from

-> (NFrames -> RawEvent -> IO RawEvent)

transforms input to output events

-> Port Output

where to put events

-> ExceptionalT e IO ()

exception causing JACK to remove that client from the process() graph.

sets the process loop of the JACK Client

readRawEvents

Arguments

:: ThrowsErrno e

=> Ptr EventBuffer

the PortBuffer to read from

-> ExceptionalT e IO [RawEvent]

pointers to newly allocated events, must be freed later!

reads all available MIDI Events on the given PortBuffer

writeRawEvent

Arguments

:: ThrowsErrno e

=> Ptr EventBuffer

the PortBuffer of the MIDI output to write to

-> RawEvent

the RawEvent to write

-> ExceptionalT e IO ()

writes a MIDI event to the PortBuffer of a MIDI output or throws eNOBUFS if buffer is full

main

Arguments

:: (NFrames -> (NFrames, T) -> IO (NFrames, T))

transforms input to output events

-> IO ()

Creates an input and an output, and transforms all input events into output events using the given function

mainRaw

Arguments

:: (NFrames -> RawEvent -> IO RawEvent)

transforms raw input to output events

-> IO ()

Creates an input and an output, and transforms all raw input events into raw output events using the given function