blob: fcd63a5d27c89e0ea1327b9ae23f1dac21c800bb (
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
|
;;
;; starlet/engine.scm
;;
;; Copyright © 2020-2023 Thomas White <taw@bitwiz.org.uk>
;;
;; This file is part of Starlet.
;;
;; Starlet is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;
(define-module (starlet engine)
#:use-module (starlet fixture)
#:use-module (starlet state)
#:use-module (starlet utils)
#:use-module (starlet attributes)
#:use-module (oop goops)
#:use-module (ice-9 threads)
#:use-module (ice-9 atomic)
#:use-module (ice-9 exceptions)
#:use-module (srfi srfi-1)
#:export (patch-fixture!
patch-many!
engine-freq
total-num-attrs
register-state!
current-value
current-value-state
patched-fixture-names
patched-fixtures))
;; The list of patched fixtures
(define fixtures (make-atomic-box '()))
;; List of states being scanned out
(define state-list (make-atomic-box '()))
;; Association list of names to states
(define state-names (make-atomic-box '()))
;; Current values (literal, not functions) of active attributes
(define current-values (make-atomic-box (make-empty-state)))
(define (patched-fixture-names)
(map get-fixture-name (atomic-box-ref fixtures)))
(define (current-value-state)
(atomic-box-ref current-values))
(define (patched-fixtures)
(atomic-box-ref fixtures))
(define (total-num-attrs)
(fold (lambda (fix prev)
(+ prev (length (get-fixture-attrs fix))))
0
(atomic-box-ref fixtures)))
(define (get-state-name st)
(assq-ref (atomic-box-ref state-names)
st))
(define (set-state-name! st name)
(atomic-box-set! state-names
(assq-set! (atomic-box-ref state-names)
st
name)))
;; Patch a new fixture
(define* (patch-real name
class
start-addr
#:key (universe 0))
(let ((new-fixture (make class
#:name name
#:sa start-addr
#:uni universe)))
(atomic-box-set! fixtures (cons new-fixture
(atomic-box-ref fixtures)))
new-fixture))
(define-syntax patch-fixture!
(syntax-rules ()
((_ name stuff ...)
(define name (patch-real (quote name) stuff ...)))))
;; Patch several new fixtures
(define* (patch-many-real name
class
start-addrs
#:key (universe 0))
(map (lambda (start-addr n)
(patch-real `(list-ref ,name ,n)
class
start-addr
#:universe universe))
start-addrs
(iota (length start-addrs))))
(define-syntax patch-many!
(syntax-rules ()
((_ name stuff ...)
(define name (patch-many-real (quote name) stuff ...)))))
(define (current-value fix attr-name)
(let ((v (state-find fix attr-name (current-value-state))))
(if (eq? v 'no-value)
(get-attr-home-val fix attr-name)
v)))
(define (append-or-replace-named-state orig-list name new-state)
(let ((new-list (map (lambda (st)
(if (eq? (get-state-name st) name)
(begin
new-state)
st))
orig-list)))
;; If there is no state with this name in the list,
;; the replacement above will have no effect.
;; Check again and add in the normal way if so.
(if (find (lambda (st) (eq? (get-state-name st)
name))
new-list)
new-list
(append orig-list (list new-state)))))
(define* (register-state! new-state
#:key (unique-name #f))
(if unique-name
(begin (set-state-name! new-state unique-name)
(atomic-box-set! state-list
(append-or-replace-named-state (atomic-box-ref state-list)
unique-name
new-state)))
(atomic-box-set! state-list
(append (atomic-box-ref state-list)
(list new-state)))))
(define engine-thread #f)
(define engine-freq 0)
(define (htp-attr? attr)
(eq? attr intensity))
(define (engine-loop start-time count)
;; Combine all the active attributes and send it out
(atomic-box-swap! current-values
(combine-states
(let ((states (atomic-box-ref state-list)))
(for-each update-state! states)
(fold
(lambda (incoming-state combined-state)
(state-for-each
(lambda (fix attr val)
(let ((incoming-val (value->number val))
(current-val (state-find fix attr combined-state)))
(unless (eq? incoming-val 'no-value)
(if (eq? current-val 'no-value)
(set-in-state! combined-state fix attr incoming-val)
(set-in-state! combined-state fix attr
(if (htp-attr? attr)
(max incoming-val current-val)
incoming-val))))))
incoming-state)
combined-state)
(make-empty-state)
states))
programmer-state))
(usleep 20000)
;; Update output rate every 1000 cycles
(if (eq? count 100)
(begin
(set! engine-freq
(exact->inexact (/ 100
(- (hirestime) start-time))))
(engine-loop (hirestime) 0))
(engine-loop start-time (+ count 1))))
(define (start-engine)
(if engine-thread
(format #t "Engine thread is already running\n")
(let ((start-time (hirestime)))
(set! engine-thread
(begin-thread
(with-exception-handler
(lambda (exn)
(display "Error in engine thread:\n")
(set! engine-thread #f)
(backtrace)
(raise-exception exn))
(lambda ()
(engine-loop start-time 0))
#:unwind? #f))))))
(start-engine)
|
