Safe Haskell	Safe-Inferred

Midi.State

Description

Simulate the state of a MIDI synthesizer.

Midi.Synth is different in that it wants to convert MIDI messages to higher level notes, but similar in that it's also simulating a synthesizer. This module focuses on the instantaneous state of the synth.

Synopsis

newtype State = State (Map Addr Channel)
empty :: State
data Channel = Channel {
- chan_notes :: !(Map Midi.Key Midi.Velocity)
- chan_pb :: !Midi.PitchBendValue
- chan_controls :: !(Map Control Midi.ControlValue)
}
get_channel :: Addr -> State -> Channel
empty_channel :: Channel
data Control
- = CC Midi.Control
- | Aftertouch Midi.Key
- | Pressure
type Addr = (Midi.WriteDevice, Midi.Channel)
type Message = (Midi.WriteDevice, Midi.Message)
convert :: Midi.WriteMessage -> Message
play :: [Message] -> State -> State
process :: State -> Message -> State
diff :: State -> State -> [Message]

Documentation

newtype State Source #

Constructors

State (Map Addr Channel)

Instances

Instances details

Show State Source #
Instance details Defined in Midi.State Methods showsPrec :: Int -> State -> ShowS # show :: State -> String # showList :: [State] -> ShowS #
Eq State Source #
Instance details Defined in Midi.State Methods (==) :: State -> State -> Bool # (/=) :: State -> State -> Bool #
Pretty.Pretty State Source #
Instance details Defined in Midi.State Methods pretty :: State -> Text Source # format :: State -> Doc Source # formatList :: [State] -> Doc Source #

empty :: State Source #

data Channel Source #

Constructors

Channel
Fields chan_notes :: !(Map Midi.Key Midi.Velocity) chan_pb :: !Midi.PitchBendValue chan_controls :: !(Map Control Midi.ControlValue)

Instances

Instances details

Show Channel Source #
Instance details Defined in Midi.State Methods showsPrec :: Int -> Channel -> ShowS # show :: Channel -> String # showList :: [Channel] -> ShowS #
Eq Channel Source #
Instance details Defined in Midi.State Methods (==) :: Channel -> Channel -> Bool # (/=) :: Channel -> Channel -> Bool #
Pretty.Pretty Channel Source #
Instance details Defined in Midi.State Methods pretty :: Channel -> Text Source # format :: Channel -> Doc Source # formatList :: [Channel] -> Doc Source #

get_channel :: Addr -> State -> Channel Source #

empty_channel :: Channel Source #

data Control Source #

Constructors

CC Midi.Control
Aftertouch Midi.Key
Pressure

Instances

Instances details

Show Control Source #
Instance details Defined in Midi.State Methods showsPrec :: Int -> Control -> ShowS # show :: Control -> String # showList :: [Control] -> ShowS #
Eq Control Source #
Instance details Defined in Midi.State Methods (==) :: Control -> Control -> Bool # (/=) :: Control -> Control -> Bool #
Ord Control Source #
Instance details Defined in Midi.State Methods compare :: Control -> Control -> Ordering # (<) :: Control -> Control -> Bool # (<=) :: Control -> Control -> Bool # (>) :: Control -> Control -> Bool # (>=) :: Control -> Control -> Bool # max :: Control -> Control -> Control # min :: Control -> Control -> Control #
Pretty.Pretty Control Source #
Instance details Defined in Midi.State Methods pretty :: Control -> Text Source # format :: Control -> Doc Source # formatList :: [Control] -> Doc Source #

type Addr = (Midi.WriteDevice, Midi.Channel) Source #

type Message = (Midi.WriteDevice, Midi.Message) Source #

convert :: Midi.WriteMessage -> Message Source #

play :: [Message] -> State -> State Source #

process :: State -> Message -> State Source #

diff :: State -> State -> [Message] Source #

Emit msgs needed to take one State to another.