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|
(define-module (starlet playback)
#:use-module (oop goops)
#:use-module (ice-9 optargs)
#:use-module (ice-9 receive)
#:use-module (ice-9 exceptions)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-43)
#:use-module (starlet base)
#:use-module (starlet utils)
#:export (make-playback
cue
cue-part
cut-to-cue-number!
get-playback-cue-number
run-cue-number!
go!
cue-list
set-playback-cue-list!
print-playback))
;; A "playback" is a state which knows how to run cues
;; from a cue list
(define-class <starlet-playback> (<starlet-state>)
(cue-list
#:init-keyword #:cue-list
#:getter get-playback-cue-list
#:setter set-playback-cue-list!)
(next-cue-index
#:init-value 0
#:getter get-next-cue-index
#:setter set-next-cue-index!)
(fade-records
#:init-form (make-hash-table)
#:getter get-fade-records
#:setter set-fade-records!))
(define-record-type <cue-part>
(make-cue-part attr-list
fade-times)
cue-part?
(attr-list get-cue-part-attr-list)
(fade-times get-cue-part-fade-times))
(define-record-type <fade-times>
(make-fade-times up-time
down-time
attr-time
up-delay
down-delay
attr-delay
preset-time
preset-delay)
fade-times?
(up-time get-fade-up-time)
(down-time get-fade-down-time)
(attr-time get-fade-attr-time)
(up-delay get-fade-up-delay)
(down-delay get-fade-down-delay)
(attr-delay get-fade-attr-delay)
(preset-time get-fade-preset-time)
(preset-delay get-fade-preset-delay))
;; Macro to avoid a profusion of (get-fade-xxx-time fade-times)
(define-syntax with-fade-times
(lambda (x)
(syntax-case x ()
((_ fade-times body ...)
(with-syntax ((up-time (datum->syntax x 'up-time))
(down-time (datum->syntax x 'down-time))
(attr-time (datum->syntax x 'attr-time))
(up-delay (datum->syntax x 'up-delay))
(down-delay (datum->syntax x 'down-delay))
(attr-delay (datum->syntax x 'attr-delay))
(preset-time (datum->syntax x 'preset-time))
(preset-delay (datum->syntax x 'preset-delay)))
#'(let ((up-time (get-fade-up-time fade-times))
(down-time (get-fade-down-time fade-times))
(attr-time (get-fade-attr-time fade-times))
(up-delay (get-fade-up-delay fade-times))
(down-delay (get-fade-down-delay fade-times))
(attr-delay (get-fade-attr-delay fade-times))
(preset-time (get-fade-preset-time fade-times))
(preset-delay (get-fade-preset-delay fade-times)))
body ...))))))
(define-record-type <fade-record>
(make-fade-record start-time
fade-times
previous
target
preset)
fade-record?
(start-time fade-start-time)
(fade-times get-fade-record-fade-times)
(previous fade-previous)
(target fade-target)
(preset fade-preset))
(define-record-type <cue>
(make-cue number
state
tracked-state
fade-times
track-intensities
cue-parts)
cue?
(number get-cue-number)
(state get-cue-state)
(tracked-state get-tracked-state
set-tracked-state!)
(fade-times get-cue-fade-times)
(track-intensities track-intensities)
(cue-parts get-cue-parts))
(define (get-playback-cue-number pb)
(cue-index-to-number (get-playback-cue-list pb)
(max 0 (- (get-next-cue-index pb) 1))))
(define (qnum a)
(/ (inexact->exact (* a 1000)) 1000))
(define (make-playback cue-list)
(let ((new-playback (make <starlet-playback>
#:cue-list cue-list)))
(register-state! new-playback)
new-playback))
(define (cue-index-to-number cue-list cue-index)
(get-cue-number (vector-ref cue-list cue-index)))
(define (cue-number-to-index cue-list cue-number)
(vector-index (lambda (a)
(eqv? (get-cue-number a)
cue-number))
cue-list))
(define (cut-to-cue-number! pb cue-number)
(let* ((cue-list (get-playback-cue-list pb))
(cue-index (cue-number-to-index cue-list (qnum cue-number))))
(set-state-hash-table! pb (copy-hash-table
(get-state-hash-table
(calculate-tracking cue-list cue-index))))
(set-next-cue-index! pb (+ cue-index 1))
;; Wipe out the old fade params
(set-fade-records! pb (make-hash-table))
;; Record fade params
(state-for-each
(lambda (fix attr val)
(let ((new-record (make-fade-record (hirestime)
(make-fade-times
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0)
0.0
val
(preset-val cue-list
cue-index
fix
attr))))
(hash-set! (get-fade-records pb)
(cons fix attr)
new-record)
(apply-fade-record pb fix attr new-record)))
pb))
*unspecified*)
(define (go! pb)
(let ((cue-index (get-next-cue-index pb)))
(run-cue! pb cue-index))
*unspecified*)
(define (run-cue-number! pb cue-number)
(let ((cue-index (cue-number-to-index (get-playback-cue-list pb)
cue-number)))
(run-cue! pb cue-index))
*unspecified*)
(define (run-cue! pb cue-index)
(let* ((cue-list (get-playback-cue-list pb)))
(unless (>= cue-index (vector-length cue-list))
(run-cue-index! pb cue-list cue-index (hirestime))
(set-next-cue-index! pb (+ cue-index 1))))
;; else at the end of the cue list
*unspecified*)
(define (fade-func start-val
end-val
preset-val
fade-time
delay-time
preset-time
preset-delay
start-time
current-time)
(unless (and (number? start-val)
(number? end-val)
(or (number? preset-val) (eq? preset-val 'attribute-not-in-state)))
(raise-exception (make-exception
(make-exception-with-message
"Non-number arguments given to fade-func")
(make-exception-with-irritants
(list start-val end-val preset-val)))))
(let ((elapsed-fade-time (- current-time start-time delay-time)))
(cond
;; Before start of fade
((< elapsed-fade-time 0)
start-val)
;; After both fade and preset fade
((and (not (eq? preset-val 'attribute-not-in-state))
(> elapsed-fade-time (+ fade-time preset-delay preset-time)))
preset-val)
;; During preset fade
((and (not (eq? preset-val 'attribute-not-in-state))
(> elapsed-fade-time (+ preset-delay fade-time)))
(+ end-val
(* (- preset-val end-val)
(/ (- elapsed-fade-time fade-time preset-delay)
preset-time))))
;; After end of fade, but not long enough for auto-move
((> elapsed-fade-time fade-time)
end-val)
;; During the fade
(else
(+ start-val
(* (- end-val start-val)
;; Fraction of fade time elapsed
(/ elapsed-fade-time fade-time)))))))
;; Return a function to fade from start-val to end-val using the
;; specified fade time and delay, starting at tnow
(define (wrap-fade start-val
end-val
preset-val
fade-time
delay-time
preset-time
preset-delay
tnow)
(lambda (time)
(fade-func (value->number start-val time)
(value->number end-val time)
(value->number preset-val time)
fade-time
delay-time
preset-time
preset-delay
tnow
time)))
;; Return a function for HTP mix of:
;; start-val fading down in down-time/down-delay
;; end-val fading up in up-time/up-delay
(define (wrap-xf start-val
end-val
fade-times
tnow)
(with-fade-times
fade-times
(lambda (time)
(max
(fade-func (value->number start-val time)
0
'attribute-not-in-state ;; no auto-move for intensity
down-time
down-delay
0
0
tnow
time)
(fade-func 0
(value->number end-val time)
'attribute-not-in-state ;; no auto-move for intensity
up-time
up-delay
0
0
tnow
time)))))
(define (fade-start-val tnow pb old-fade-record fix attr)
(cond
;; Attr not seen before in this playback: start fading from home
((not old-fade-record)
(get-attr-home-val fix attr))
;; Attr seen in a finished fade
((fade-finished? tnow old-fade-record)
(first-defined-value (fade-preset old-fade-record)
(fade-target old-fade-record)))
;; Attr is currently fading: get the current state
;; (NB it might be a function/effect)
(else
(let ((current-val (state-find fix attr pb)))
(value->number current-val tnow)))))
(define (replace-noval val replacement)
(if (eq? 'attribute-not-in-state val)
replacement
val))
(define (apply-intensity-fade-record pb fix fade-record)
(with-fade-times
(get-fade-record-fade-times fade-record)
;; Since we only handle intensities here, "not in state" should be
;; interpreted as zero intensity.
(let ((prev-val (replace-noval (fade-previous fade-record) 0.0))
(target-val (replace-noval (fade-target fade-record) 0.0)))
(cond
;; Number to number, fading up
((and (number? target-val)
(number? prev-val)
(> target-val prev-val))
(set-in-state! pb fix 'intensity (wrap-fade prev-val
target-val
'attribute-not-in-state
up-time
up-delay
0.0
0.0
(fade-start-time fade-record))))
;; Number to number, fading down
((and (number? target-val)
(number? prev-val)
(< target-val prev-val))
(set-in-state! pb fix 'intensity (wrap-fade prev-val
target-val
'attribute-not-in-state
down-time
down-delay
0.0
0.0
(fade-start-time fade-record))))
;; Number to number, staying the same
((and (number? target-val)
(number? prev-val))
(set-in-state! pb fix 'intensity (wrap-fade prev-val
target-val
'attribute-not-in-state
0.0
0.0
0.0
0.0
(fade-start-time fade-record))))
;; Everything else, e.g. number to effect
(else
(set-in-state! pb fix 'intensity (wrap-xf prev-val
target-val
(get-fade-record-fade-times fade-record)
(fade-start-time fade-record))))))))
(define (apply-continuous-fade-record pb fix attr fade-record)
#f)
(define (apply-boolean-fade-record pb fix attr fade-record)
#f)
(define (apply-list-fade-record pb fix attr fade-record)
#f)
;; Work out the fade function for fade-record, and apply it to pb
(define (apply-fade-record pb fix attr fade-record)
(let* ((attribute-obj (find-attr fix attr)))
(unless attribute-obj
(raise-exception (make-exception
(make-exception-with-message
"Attribute not found in apply-fade-record")
(make-exception-with-irritants
(list fix attr)))))
(let ((atype (get-attr-type attribute-obj)))
(cond
((intensity? attr)
(apply-intensity-fade-record pb fix fade-record))
((eq? atype 'continuous)
(apply-continuous-fade-record pb fix attr fade-record))
((eq? atype 'boolean)
(apply-boolean-fade-record pb fix attr fade-record))
((eq? atype 'list)
(apply-list-fade-record pb fix attr fade-record))
(else
(raise-exception (make-exception
(make-exception-with-message
"Unrecognised attribute type in apply-fade-record")
(make-exception-with-irritants
((get-attr-type attribute-obj))))))))))
(define (should-use-preset fr)
(not (eq? 'attribute-not-in-state
(fade-preset fr))))
(define (fade-finished? tnow fade-record)
(with-fade-times
(get-fade-record-fade-times fade-record)
(and
(> tnow
(+ (fade-start-time fade-record)
up-delay
up-time))
(> tnow
(+ (fade-start-time fade-record)
down-delay
down-time))
(> tnow
(+ (fade-start-time fade-record)
attr-delay
attr-time
(if (should-use-preset fade-record)
(+ preset-time preset-delay)
0))))))
(define (match-fix-attr attr-el fix attr)
(cond
((fixture? attr-el)
(eq? attr-el fix))
((and (pair? attr-el)
(fixture? (car attr-el))
(symbol? (cdr attr-el)))
(and (eq? (car attr-el) fix)
(eq? (cdr attr-el) attr)))
((list? attr-el)
(and (memq fix attr-el)
(memq attr attr-el)))
(else #f)))
(define (in-cue-part? cue-part fix attr)
(find (lambda (p) (match-fix-attr p fix attr))
(get-cue-part-attr-list cue-part)))
(define (cue-part-fade-times the-cue fix attr)
(let ((the-cue-part
(find (lambda (p) (in-cue-part? p fix attr))
(get-cue-parts the-cue))))
(if (cue-part? the-cue-part)
(get-cue-part-fade-times the-cue-part)
(get-cue-fade-times the-cue))))
(define (fixture-dark? fix the-cue)
(let ((val (state-find fix
'intensity
(get-tracked-state the-cue))))
(or (not (have-value val))
(eqv? 0 val))))
(define (next-value cue-list cue-index fix attr)
(if (>= cue-index (- (vector-length cue-list) 1))
#f
(let ((the-cue-state (calculate-tracking cue-list (+ 1 cue-index))))
(state-find fix
attr
the-cue-state))))
(define (preset-val cue-list cue-index fix attr)
(let ((the-cue (vector-ref cue-list cue-index)))
(if (fixture-dark? fix the-cue)
(next-value cue-list cue-index fix attr)
#f)))
(define (fix-attr-eq fa1 fa2)
(and (eq? (car fa1) (car fa2))
(eq? (cdr fa1) (cdr fa2))))
(define (hash-map-keys hm)
(hash-map->list (lambda (key val) key)
hm))
(define (add-fix-attrs-to-list state old-list)
(lset-union fix-attr-eq
old-list
(hash-map-keys
(get-state-hash-table state))))
(define (fix-attrs-involved . states)
(fold add-fix-attrs-to-list '() states))
(define (run-cue-index! pb cue-list cue-index tnow)
(let ((the-cue-state (calculate-tracking cue-list cue-index))
(next-cue-state (calculate-tracking cue-list (+ cue-index 1)))
(the-cue (vector-ref cue-list cue-index)))
(for-each
(lambda (fix-attr)
(let* ((fix (car fix-attr))
(attr (cdr fix-attr))
(fade-record (hash-ref (get-fade-records pb) fix-attr))
(start-val (fade-start-val tnow pb fade-record fix attr))
(target-val (state-find fix attr the-cue-state))
(preset-val (if (and next-cue-state
(not (intensity? attr)))
(state-find fix attr next-cue-state)
'attribute-not-in-state)))
(let ((new-record (make-fade-record tnow
(cue-part-fade-times the-cue
fix
attr)
start-val
target-val
preset-val)))
(hash-set! (get-fade-records pb)
fix-attr
new-record)
(apply-fade-record pb
fix
attr
new-record))))
;; Add the next cue to list of states to look at, only if it exists
(if next-cue-state
(fix-attrs-involved pb the-cue-state next-cue-state)
(fix-attrs-involved pb the-cue-state)))))
(define (print-fade-record fix-attr fr)
(format #t " ~a ~a\n"
(get-fixture-name (car fix-attr))
(cdr fix-attr))
(format #t " Start time ~a\n" (fade-start-time fr))
(format #t " Fade times ~a\n" (get-fade-record-fade-times fr))
(format #t " Previous value ~a\n" (fade-previous fr))
(format #t " Target value ~a\n" (fade-target fr))
(format #t " Preset value ~a\n" (fade-preset fr)))
(define (print-playback pb)
(format #t "Playback ~a:\n" pb)
;;(format #t " Cue list ~a\n" (get-playback-cue-list pb))
(if (< (get-next-cue-index pb)
(vector-length (get-playback-cue-list pb)))
(let ((the-cue (vector-ref (get-playback-cue-list pb)
(get-next-cue-index pb))))
(format #t " Next cue index ~a (~a)\n"
(get-next-cue-index pb)
the-cue))
(format #t " End of cue list.\n"))
(format #t " Fade records:\n")
(hash-for-each print-fade-record (get-fade-records pb)))
;;; ******************** Cue lists ********************
(define-syntax cue-part
(syntax-rules ()
((_ (fixtures ...) params ...)
(make-cue-part-obj (list fixtures ...)
params ...))))
(define* (make-cue-part-obj attr-list
#:key
(up-time 5)
(down-time 5)
(attr-time 3)
(up-delay 0)
(down-delay 0)
(attr-delay 0)
(preset-time 1)
(preset-delay 1))
(make-cue-part attr-list
(make-fade-times
up-time
down-time
attr-time
up-delay
down-delay
attr-delay
preset-time
preset-delay)))
(define cue
(lambda (number state . rest)
(receive (cue-parts rest-minus-cue-parts)
(partition cue-part? rest)
(let-keywords rest-minus-cue-parts #f
((up-time 5)
(down-time 5)
(attr-time 5)
(up-delay 0)
(down-delay 0)
(attr-delay 0)
(preset-time 1)
(preset-delay 1)
(track-intensities #f))
(make-cue (qnum number)
state
#f
(make-fade-times
up-time
down-time
attr-time
up-delay
down-delay
attr-delay
preset-time
preset-delay)
track-intensities
cue-parts)))))
(define (ensure-cue-zero-realized cue-list)
(let ((cue-zero (vector-ref cue-list 0)))
(unless (get-tracked-state cue-zero)
(parameterize ((current-state (make-empty-state)))
(set-tracked-state! cue-zero (current-state))))))
;; Get the state for a cue, taking into account tracking etc
(define (calculate-tracking cue-list cue-index)
(ensure-cue-zero-realized cue-list)
(if (>= cue-index (vector-length cue-list))
#f
(let* ((the-cue (vector-ref cue-list cue-index))
(rstate (get-tracked-state the-cue)))
(or rstate
(let ((previous-state (calculate-tracking cue-list (- cue-index 1))))
(parameterize ((current-state (make-empty-state)))
(apply-state previous-state)
(unless (track-intensities the-cue)
(blackout (current-state)))
(apply-state (get-cue-state the-cue))
(set-tracked-state! the-cue (current-state))
(current-state)))))))
(define-syntax cue-list
(syntax-rules ()
((_ body ...)
(vector (cue 0
(make-empty-state)
#:up-time 0
#:down-time 0
#:attr-time 0
#:preset-time 0
#:preset-delay 0)
body ...))))
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