midi-0.1.4: Handling of MIDI messages and files Source code Contents Index

Sound.MIDI.File.Event

Description

MIDI messages in MIDI files. They are not a superset of the messages, that are used for real-time communication between MIDI devices. For these refer to Sound.MIDI.Message. Namely System Common and System Real Time messages are missing. If you need both real-time and file messages (say for ALSA sequencer), you need a custom datatype.

Synopsis

data T = MIDIEvent T | MetaEvent T | SystemExclusive T get :: C parser => Fallible (T parser) T put :: C writer => T -> T writer type TrackEvent = (ElapsedTime, T) getTrackEvent :: C parser => Fallible (T parser) TrackEvent type ElapsedTime = Integer fromElapsedTime :: ElapsedTime -> Integer toElapsedTime :: Integer -> ElapsedTime mapBody :: (T -> T) -> TrackEvent -> TrackEvent maybeMIDIEvent :: T -> Maybe T maybeMetaEvent :: T -> Maybe T maybeVoice :: T -> Maybe (Channel, T) mapVoice :: (T -> T) -> T -> T

Documentation

data T Source

Constructors MIDIEvent T MetaEvent T SystemExclusive T Instances Eq T Ord T Show T Arbitrary T

get :: C parser => Fallible (T parser) T Source

put :: C writer => T -> T writer Source

The following functions encode various MIDIFile.T elements into the raw data of a standard MIDI file.

type TrackEvent = (ElapsedTime, T) Source

getTrackEvent :: C parser => Fallible (T parser) TrackEvent Source

Each event is preceded by the delta time: the time in ticks between the last event and the current event. Parse a time and an event, ignoring System Exclusive messages.

type ElapsedTime = Integer Source

fromElapsedTime :: ElapsedTime -> Integer Source

toElapsedTime :: Integer -> ElapsedTime Source

mapBody :: (T -> T) -> TrackEvent -> TrackEvent Source

maybeMIDIEvent :: T -> Maybe T Source

maybeMetaEvent :: T -> Maybe T Source

maybeVoice :: T -> Maybe (Channel, T) Source

mapVoice :: (T -> T) -> T -> T Source

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