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(define-module (nanolight fixture)
#:use-module (oop goops)
#:use-module (nanolight state)
#:use-module (ice-9 threads)
#:export (<fixture> <fixture-attribute>
make-output
patch-fixture show-state
fixture-string get-address-string
percent->dmxval
get-start-addr get-universe))
(use-modules (srfi srfi-1))
(define-class <fixture-attribute> (<object>)
(name
#:init-value 'unnamed-attribute
#:init-keyword #:name
#:getter name)
(range
#:init-value '()
#:init-keyword #:range
#:getter range)
(type
#:init-value 'continuous
#:init-keyword #:type
#:getter type)
(home-value
#:init-value 0
#:init-keyword #:home-value
#:getter home-value)
(translator
#:init-value (lambda (universe start-addr value set-dmx) #f)
#:init-keyword #:translator
#:getter translator))
(define-class <fixture> (<object>)
(attributes
#:init-value '()
#:init-keyword #:attributes
#:getter attributes)
(universe
#:init-value #f
#:init-keyword #:uni
#:getter get-universe
#:setter set-universe!)
(start-addr
#:init-value #f
#:init-keyword #:sa
#:getter get-start-addr
#:setter set-start-addr!)
(friendly-name
#:init-value "Fixture"
#:init-keyword #:friendly-name
#:getter get-friendly-name
#:setter set-friendly-name!)
(address-string
#:init-value #f
#:allocation #:virtual
#:getter get-address-string
#:slot-ref (lambda (a)
(string-append
(number->string (slot-ref a 'universe))
"."
(number->string (slot-ref a 'start-addr))))
#:slot-set! (lambda (a s) #f)))
(define (fixture-string fixture)
(string-append
(get-friendly-name fixture)
" at "
(get-address-string fixture)))
(define (patch-fixture output attributes universe start-addr friendly-name)
(let ((new-fixture (make <fixture>
#:attributes attributes
#:uni universe
#:sa start-addr
#:friendly-name friendly-name)))
(output 'add-fixture new-fixture)
new-fixture))
; FIXME: Clamp to range
(define (percent->dmxval val)
(/ (* 256 val) 100))
(define (show-state output state)
(output 'show-state state))
(define (find-attribute fix attr)
(find (lambda (a)
(eq? (name a) attr))
(attributes fix)))
(define (round-dmx a)
(min 255 (max 0 (round a))))
(define (make-output)
(let ((fixtures '())
(current-state '()))
(define (run-scanout)
(let ((universes '()))
(define (set-dmx universe addr nbytes value)
; FIXME: 16 bit values
(unless (assq universe universes)
(set! universes (acons
universe
(make-u8vector 512 0)
universes)))
(u8vector-set!
(assq-ref universes universe)
addr (round-dmx value)))
(define (execute-state-assignment state-assignment)
(let ((attr (find-attribute
(fixture state-assignment)
(attribute state-assignment))))
(when attr
(let ((trans (translator attr)))
(trans
(get-universe (fixture state-assignment))
(get-start-addr (fixture state-assignment))
((value-func state-assignment))
set-dmx)))))
(for-each execute-state-assignment current-state)
(display universes)
(display "\r"))
(yield)
(run-scanout))
; Start sending output
(make-thread run-scanout)
; Method functions
(define (show-state state)
(set! current-state state))
(define (add-fixture fixture)
(set! fixtures (cons fixture fixtures)))
(lambda args
(apply
(case (car args)
((show-state) show-state)
((add-fixture) add-fixture)
(else => (error "Invalid method")))
(cdr args)))))
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