79 lines
2.2 KiB
Racket
79 lines
2.2 KiB
Racket
#lang scribble/manual
|
|
@(require (for-label racket))
|
|
|
|
@title{ProgramChangeResponder}
|
|
allow functions to be registered to respond to MIDI program change events@section{related}
|
|
Classes/MIDIFunc, Classes/MIDIdef, Classes/MIDIResponder, Classes/CCResponder
|
|
@section{categories}
|
|
External Control>MIDI
|
|
|
|
@section{description}
|
|
|
|
@section{note}
|
|
SC 3.5 added the link::Classes/MIDIFunc:: and link::Classes/MIDIdef:: classes. These are faster, and aim to have a more convenient, logical and consistent interface, which shares a common design with link::Classes/OSCFunc:: and link::Classes/OSCdef::. They also provide support for all MIDI message types.::
|
|
@section{ClassMethods}
|
|
|
|
|
|
@section{method}
|
|
new
|
|
|
|
@section{argument}
|
|
function
|
|
A link::Classes/Function:: to be evaluated. Arguments passed to the function are: src, chan, value.
|
|
|
|
@section{argument}
|
|
src
|
|
The src number may be the system UID (obtained from
|
|
@racketblock[ MIDIClient.sources[index].uid ::) or the index of the source in the ]
|
|
|
|
@racketblock[ MIDIClient.sources :: array. nil matches all.
|
|
|
|
]
|
|
@section{argument}
|
|
chan
|
|
An link::Classes/Integer:: between 0 and 15 that selects which MIDI channel to match. nil matches all. May also be a link::Classes/Function:: which will be evaluated to determine the match. eg: { |val| val < 2 }
|
|
|
|
@section{argument}
|
|
value
|
|
An link::Classes/Integer:: between 0 and 127 that selects which program change number to match. nil matches all. May also be a link::Classes/Function:: which will be evaluated to determine the match. eg: { |val| val >= 4 }
|
|
|
|
@section{argument}
|
|
install
|
|
If true, then if the midi event is matched, cease testing any further responders. Note that doing this will prevent any other responders of this type from responding, including ones added behind the scenes in classes. Note also that this functionality is sensitive to the order in which responders are added.
|
|
|
|
@section{Examples}
|
|
|
|
|
|
|
|
@racketblock[
|
|
(
|
|
c = ProgramChangeResponder({ |src,chan,val|
|
|
[src,chan,val].postln;
|
|
},
|
|
nil, // any source
|
|
nil, // any channel
|
|
nil // any value
|
|
)
|
|
)
|
|
|
|
c.remove
|
|
::
|
|
|
|
]
|
|
|
|
@racketblock[
|
|
(
|
|
c = ProgramChangeResponder({ |src,chan,val|
|
|
[src,chan,val].postln;
|
|
},
|
|
nil, // any source
|
|
nil, // any channel
|
|
(50..60) // within this value range
|
|
)
|
|
)
|
|
|
|
c.remove
|
|
::
|
|
]
|
|
|
|
|