blob: 3d662e441160f233af0f109e3409db9d0e14c9ac (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
|
(define-module (starlet playback)
#:use-module (oop goops)
#:use-module (ice-9 optargs)
#:use-module (ice-9 receive)
#: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
cue-state
set-playback-cue-list!))
;; 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)
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))
;; 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)))
#'(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)))
body ...))))))
(define-record-type <fade-record>
(make-fade-record start-time
fade-times
previous
target)
fade-record?
(start-time fade-start-time)
(fade-times get-fade-record-fade-times)
(previous fade-previous)
(target fade-target))
(define-record-type <cue>
(make-cue number
state-function
realized-state
fade-times
track-intensities
cue-parts)
cue?
(number get-cue-number)
(state-function get-cue-state-function)
(realized-state get-realized-state set-realized-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)))
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
(realize-state 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)
(hash-set! (get-fade-records pb)
(cons fix attr)
(make-fade-record (hirestime)
(make-fade-times
0.0
0.0
0.0
0.0
0.0
0.0)
0.0
val)))
pb))
(return-unspecified))
(define (go! pb)
(let ((cue-index (get-next-cue-index pb)))
(run-cue! pb cue-index))
(return-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))
(return-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
(return-unspecified))
(define (fade-func start-val end-val fade-time delay-time start-time current-time)
(let ((elapsed-fade-time (- current-time start-time delay-time)))
(cond
;; Before start of fade
((< elapsed-fade-time 0)
start-val)
;; After end of fade
((> 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
fade-time
delay-time
tnow)
(lambda (time)
(fade-func (value->number start-val time)
(value->number end-val time)
fade-time
delay-time
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
down-time
down-delay
tnow
time)
(fade-func 0
(value->number end-val time)
up-time
up-delay
tnow
time)))))
(define (fade-start-val tnow pb old-fade-record fix attr val)
(cond
;; Attr not seen before in this playback: start fading from home
((eq? old-fade-record #f)
(home-val fix attr))
;; Attr seen in a finished fade
((fade-finished? tnow 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 ((func (state-find fix attr pb)))
(func tnow)))))
(define (set-fade pb fix attr fade-record)
(with-fade-times
(get-fade-record-fade-times fade-record)
(let ((prev-val (fade-previous fade-record))
(target (fade-target fade-record)))
(cond
;; Non-intensity attribute
((not (intensity? attr))
(set-attr! pb fix attr (wrap-fade (fade-previous fade-record)
(fade-target fade-record)
attr-time
attr-delay
(fade-start-time fade-record))))
;; Number to number, fading up
((and (number? target) (number? prev-val) (> target prev-val))
(set-attr! pb fix attr (wrap-fade prev-val
target
up-time
up-delay
(fade-start-time fade-record))))
;; Number to number, fading down
((and (number? target) (number? prev-val) (< target prev-val))
(set-attr! pb fix attr (wrap-fade prev-val
target
down-time
down-delay
(fade-start-time fade-record))))
;; Number to number, staying the same
((and (number? target) (number? prev-val))
(set-attr! pb fix attr (wrap-fade prev-val
target
0.0
0.0
(fade-start-time fade-record))))
;; Everything else, e.g. number to effect
(else
(set-attr! pb fix attr (wrap-xf (fade-previous fade-record)
(fade-target fade-record)
(get-fade-record-fade-times fade-record)
(fade-start-time fade-record))))))))
(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)))))
(define (match-fix-attr attr-el fix attr)
(cond
((fixture? attr-el)
(eq? attr-el fix))
((and (pair? attr-el)
(fixture? (car attr-el))
(fixture-attribute? (cdr attr-el)))
(and (eq? (car attr-el) fix)
(eq? (cdr attr-el) attr)))
((and (pair? attr-el)
(fixture? (car attr-el))
(symbol? (cdr attr-el)))
(and (eq? (car attr-el) fix)
(eq? (cdr attr-el) (get-attr-name attr))))
((list? attr-el)
(and (memq fix attr-el)
(or (memq attr attr-el)
(memq (get-attr-name 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 (run-cue-index! pb cue-list cue-number tnow)
(let ((the-cue-state (realize-state cue-list cue-number))
(the-cue (vector-ref cue-list cue-number)))
(state-for-each
(lambda (fix attr val)
(let ((fade-record (hash-ref (get-fade-records pb)
(cons fix attr))))
(let ((new-record (make-fade-record tnow
(cue-part-fade-times the-cue fix attr)
(fade-start-val tnow
pb
fade-record
fix
attr
val)
val)))
(hash-set! (get-fade-records pb)
(cons fix attr)
new-record)
(set-fade pb fix attr new-record))))
the-cue-state)))
;;; ******************** Cue lists ********************
(define-syntax cue-state
(syntax-rules ()
((_ body ...)
(lambda ()
body ...))))
(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))
(make-cue-part attr-list
(make-fade-times
up-time
down-time
attr-time
up-delay
down-delay
attr-delay)))
(define cue
(lambda (number state-function . 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)
(track-intensities #f))
(make-cue (qnum number)
state-function
#f
(make-fade-times
up-time
down-time
attr-time
up-delay
down-delay
attr-delay)
track-intensities
cue-parts)))))
(define (ensure-cue-zero-realized cue-list)
(let ((cue-zero (vector-ref cue-list 0)))
(unless (get-realized-state cue-zero)
(set-realized-state! cue-zero (make <starlet-state>)))))
;; Get the state for a cue, taking into account tracking etc
(define (realize-state cue-list cue-index)
(ensure-cue-zero-realized cue-list)
(let* ((the-cue (vector-ref cue-list cue-index))
(rstate (get-realized-state the-cue)))
(or rstate
(let ((previous-state (realize-state cue-list (- cue-index 1))))
(parameterize ((current-state (make-empty-state)))
(apply-state previous-state)
(unless (track-intensities the-cue)
(blackout (current-state)))
((get-cue-state-function the-cue))
(set-realized-state! the-cue (current-state))
(current-state))))))
(define-syntax cue-list
(syntax-rules ()
((_ body ...)
(vector (cue 0
(lambda () #f) ;; The real base state is in ensure-cue-zero-realized
#:up-time 0
#:down-time 0
#:attr-time 0)
body ...))))
|