139 lines
3 KiB
Racket
139 lines
3 KiB
Racket
#lang racket
|
|
|
|
|
|
(require rsc3)
|
|
|
|
|
|
(provide (all-defined-out))
|
|
|
|
;; TODO - remove. using "signal-slider" for testing
|
|
(require "gui.rkt")
|
|
|
|
|
|
(define current-node-id 1000)
|
|
(define (gen-node-id)
|
|
(set! current-node-id (add1 current-node-id))
|
|
current-node-id)
|
|
|
|
(define custom-synth-num 1)
|
|
(define (gen-synth-name)
|
|
(set! current-node-id (add1 current-node-id))
|
|
current-node-id)
|
|
|
|
(define (wave-instrument wave-func)
|
|
(letc ([bus 0]
|
|
[freq 440])
|
|
(out bus (mul 0.2 (wave-func ar freq 0)))))
|
|
|
|
(define sin-instrument
|
|
(letc ([bus 0]
|
|
[freq 440])
|
|
;; TODO - remove slider
|
|
(out bus (mul (signal-slider "amplitude" 100 800 200) (sin-osc ar freq 0)))))
|
|
|
|
(define saw-instrument
|
|
(letc ([bus 0]
|
|
[freq 440])
|
|
(out bus (mul 0.2 (saw ar freq)))))
|
|
|
|
(define moog-instrument
|
|
(letc ([bus 0]
|
|
[freq 440])
|
|
(out bus (moog-ff
|
|
(mul (saw ar freq) 0.1)
|
|
(mouse-y kr 200 30000 1 0.1) 3 0))))
|
|
|
|
;; TODO
|
|
(define (make-instrument graph)
|
|
(let ([sd (letc ([bus 0])
|
|
(out bus graph))]
|
|
[name (format "synth~a" current-node-id)])
|
|
|
|
(with-sc3 (lambda (fd)
|
|
(send-synth fd name sd)))
|
|
|
|
name
|
|
))
|
|
|
|
|
|
|
|
;; example of definst macro like overtone's definst
|
|
#;(define-syntax-rule (define-instrument inst-name [[argname argdefault] ...] ugen)
|
|
(define (inst-name [argname argdefault] ...)
|
|
(+ argname ...)))
|
|
|
|
(define perset-instrument-map
|
|
`(("sin-inst" ,sin-instrument)
|
|
("saw-inst" ,saw-instrument)
|
|
("moog-inst" ,moog-instrument)))
|
|
|
|
;; send synthdefs
|
|
(map (lambda (pair)
|
|
(with-sc3 (lambda (fd)
|
|
(send-synth fd (first pair) (second pair)))))
|
|
perset-instrument-map)
|
|
|
|
|
|
; === user instrument funcs ===
|
|
|
|
(struct note (id [freq #:mutable]))
|
|
|
|
(define (create-synth name node-id)
|
|
(send-msg (s-new0 name node-id 1 1))
|
|
; don't make sound upon creation
|
|
(send-msg (n-run1 node-id 0))
|
|
node-id)
|
|
|
|
(define (preset-instrument name)
|
|
(let ([node-id (gen-node-id)])
|
|
(create-synth name node-id)))
|
|
|
|
|
|
(define (note-on the-note)
|
|
;(send-msg (n-set1 (note-id the-note) "freq" (note-freq the-note)))
|
|
;(send-msg (n-set1 inst "bus" track)) ; TODO
|
|
(send-msg (n-run1 (note-id the-note) 1)))
|
|
|
|
(define (note-off the-note)
|
|
(send-msg (n-run1 (note-id the-note) 0)))
|
|
|
|
|
|
(define (set-note-param the-note name val)
|
|
(if (eq? name "freq")
|
|
(set-note-freq! the-note val)
|
|
empty)
|
|
(send-msg (n-set1 (note-id the-note) name val)))
|
|
|
|
|
|
|
|
#|
|
|
|
|
- to stop/run:
|
|
(send-msg (n-run1 1001 1))
|
|
|
|
|#
|
|
|
|
|
|
;; ======== example useage ===========
|
|
#|
|
|
(define my-sin (preset-instrument "sin-inst"))
|
|
|
|
(param-slider "change frequency" 300 1000 400
|
|
(lambda (val)
|
|
(set-inst-param my-sin "freq" val)))
|
|
|
|
(param-check-box "synth on" #f
|
|
(lambda (v)
|
|
(if v
|
|
(inst-on my-sin)
|
|
(inst-off my-sin))))
|
|
|
|
(show-gui)
|
|
|
|
;; example:
|
|
(sleep 0.5)
|
|
; (note-on my-sin 500 1)
|
|
|
|
; (note-off my-sin)
|
|
|
|
|#
|