1 ! (c)2009 Joe Groff bsd license
2 USING: accessors alien audio classes.struct fry calendar alarms
3 combinators combinators.short-circuit destructors generalizations
4 kernel literals locals math openal sequences specialized-arrays strings ;
5 QUALIFIED-WITH: alien.c-types c
6 SPECIALIZED-ARRAYS: c:float c:uchar c:uint ;
10 { position initial: { 0.0 0.0 0.0 } }
11 { gain float initial: 1.0 }
12 { velocity initial: { 0.0 0.0 0.0 } }
13 { relative? boolean initial: f }
14 { distance float initial: 1.0 }
15 { rolloff float initial: 1.0 } ;
17 TUPLE: audio-orientation
18 { forward initial: { 0.0 0.0 -1.0 } }
19 { up initial: { 0.0 1.0 0.0 } } ;
21 C: <audio-orientation> audio-orientation
23 : orientation>float-array ( orientation -- float-array )
25 [ up>> first3 ] bi 6 float-array{ } nsequence ; inline
28 { position initial: { 0.0 0.0 0.0 } }
29 { gain float initial: 1.0 }
30 { velocity initial: { 0.0 0.0 0.0 } }
31 { orientation initial: T{ audio-orientation } } ;
33 GENERIC: audio-position ( source/listener -- position )
34 GENERIC: audio-gain ( source/listener -- gain )
35 GENERIC: audio-velocity ( source/listener -- velocity )
36 GENERIC: audio-relative? ( source -- relative? )
37 GENERIC: audio-distance ( source -- distance )
38 GENERIC: audio-rolloff ( source -- rolloff )
39 GENERIC: audio-orientation ( listener -- orientation )
41 M: object audio-position drop { 0.0 0.0 0.0 } ; inline
42 M: object audio-gain drop 1.0 ; inline
43 M: object audio-velocity drop { 0.0 0.0 0.0 } ; inline
44 M: object audio-relative? drop f ; inline
45 M: object audio-distance drop 1.0 ; inline
46 M: object audio-rolloff drop 1.0 ; inline
47 M: object audio-orientation drop T{ audio-orientation } ; inline
49 M: audio-source audio-position position>> ; inline
50 M: audio-source audio-gain gain>> ; inline
51 M: audio-source audio-velocity velocity>> ; inline
52 M: audio-source audio-relative? relative?>> ; inline
54 M: audio-listener audio-position position>> ; inline
55 M: audio-listener audio-gain gain>> ; inline
56 M: audio-listener audio-velocity velocity>> ; inline
57 M: audio-listener audio-orientation orientation>> ; inline
59 TUPLE: audio-engine < disposable
60 { voice-count integer }
61 { buffer-size integer }
62 { buffer-count integer }
67 { next-source integer }
71 TUPLE: audio-clip < disposable
72 { audio-engine audio-engine }
77 { al-buffers uint-array }
78 { next-data-offset integer } ;
80 ERROR: audio-device-not-found device-name ;
81 ERROR: audio-context-not-available device-name ;
83 :: <audio-engine> ( device-name voice-count buffer-size buffer-count -- engine )
85 device-name alcOpenDevice :> al-device
86 al-device [ device-name audio-device-not-found ] unless
87 al-device |alcCloseDevice* drop
89 al-device f alcCreateContext :> al-context
90 al-context [ device-name audio-context-not-available ] unless
91 al-context |alcDestroyContext drop
93 al-context alcSuspendContext
95 audio-engine new-disposable
96 voice-count >>voice-count
98 al-context >>al-context
99 buffer-size >>buffer-size
100 buffer-count >>buffer-count
103 : <standard-audio-engine> ( -- engine )
104 f 16 8192 2 <audio-engine> ;
108 : make-engine-current ( audio-engine -- )
109 al-context>> alcMakeContextCurrent drop ; inline
111 : allocate-sources ( audio-engine -- sources )
112 voice-count>> dup (uint-array) [ alGenSources ] keep ; inline
114 :: flush-source ( source -- )
116 0 c:<uint> :> dummy-buffer
117 source AL_BUFFERS_PROCESSED get-source-param [
118 source 1 dummy-buffer alSourceUnqueueBuffers
121 : free-sources ( sources -- )
122 [ length ] keep alDeleteSources ; inline
124 :: (get-available-source) ( sources source# stop-source# -- next-source# al-source/f )
125 source# sources nth :> al-source
126 source# 1 + sources length mod :> next-source#
128 [ AL_BUFFERS_PROCESSED get-source-param 0 = ]
129 [ AL_BUFFERS_QUEUED get-source-param 0 = ]
130 [ AL_SOURCE_STATE get-source-param { $ AL_INITIAL $ AL_STOPPED } member? ]
132 [ next-source# al-source ] [
133 next-source# stop-source# =
135 [ sources next-source# stop-source# (get-available-source) ] if
138 :: get-available-source ( audio-engine -- al-source/f )
139 audio-engine [ al-sources>> ] [ next-source>> ] bi dup (get-available-source)
140 :> ( next-source al-source )
141 audio-engine next-source >>next-source drop
144 :: (queue-clip-buffer) ( audio-clip al-buffer audio data size -- )
145 al-buffer audio openal-format data size audio sample-rate>> alBufferData
146 audio-clip al-source>> 1 al-buffer c:<uint> alSourceQueueBuffers
148 audio-clip [ size + ] change-next-data-offset drop ; inline
150 :: queue-clip-buffer ( audio-clip al-buffer -- )
151 audio-clip audio-engine>> :> audio-engine
152 audio-engine buffer-size>> :> buffer-size
153 audio-clip audio>> :> audio
154 audio-clip next-data-offset>> :> next-data-offset
155 audio size>> next-data-offset - :> remaining-audio
158 { [ remaining-audio 0 <= ] [
160 audio-clip 0 >>next-data-offset
161 al-buffer queue-clip-buffer
164 { [ remaining-audio buffer-size < ] [
167 [ next-data-offset swap <displaced-alien> remaining-audio <direct-uchar-array> ]
168 [ buffer-size remaining-audio - <direct-uchar-array> ] bi append :> data
169 audio-clip al-buffer audio data buffer-size (queue-clip-buffer)
171 audio-clip [ audio size>> mod ] change-next-data-offset drop
173 next-data-offset audio data>> <displaced-alien> :> data
174 audio-clip al-buffer audio data remaining-audio (queue-clip-buffer)
178 next-data-offset audio data>> <displaced-alien> :> data
179 audio-clip al-buffer audio data buffer-size (queue-clip-buffer)
183 : update-listener ( audio-engine -- )
185 [ AL_POSITION swap audio-position first3 alListener3f ]
186 [ AL_GAIN swap audio-gain alListenerf ]
187 [ AL_VELOCITY swap audio-velocity first3 alListener3f ]
188 [ AL_ORIENTATION swap audio-orientation orientation>float-array alListenerfv ]
191 : update-source ( audio-clip -- )
192 [ al-source>> ] [ source>> ] bi {
193 [ AL_POSITION swap audio-position first3 alSource3f ]
194 [ AL_GAIN swap audio-gain alSourcef ]
195 [ AL_VELOCITY swap audio-velocity first3 alSource3f ]
196 [ AL_SOURCE_RELATIVE swap audio-relative? c:>c-bool alSourcei ]
197 [ AL_REFERENCE_DISTANCE swap audio-distance alSourcef ]
198 [ AL_ROLLOFF_FACTOR swap audio-rolloff alSourcef ]
201 :: update-audio-clip ( audio-clip -- )
202 audio-clip update-source
203 audio-clip al-source>> :> al-source
204 0 c:<uint> :> buffer*
206 al-source AL_SOURCE_STATE get-source-param AL_STOPPED =
207 [ audio-clip dispose ] [
208 al-source AL_BUFFERS_PROCESSED get-source-param [
209 al-source 1 buffer* alSourceUnqueueBuffers
210 audio-clip buffer* c:*uint queue-clip-buffer
214 : clip-al-sources ( clips -- length sources )
215 [ length ] [ [ al-source>> ] uint-array{ } map-as ] bi ;
221 : start-audio* ( audio-engine -- )
222 dup al-sources>> [ drop ] [
224 [ make-engine-current ]
225 [ al-context>> alcProcessContext ]
227 dup allocate-sources >>al-sources
236 : start-audio ( audio-engine -- )
238 dup '[ _ update-audio ] 20 milliseconds every >>update-alarm
241 : stop-audio ( audio-engine -- )
244 [ make-engine-current ]
245 [ update-alarm>> [ cancel-alarm ] when* ]
246 [ clips>> clone [ dispose ] each ]
247 [ al-sources>> free-sources ]
254 [ al-context>> alcSuspendContext ]
258 M: audio-engine dispose*
260 [ [ alcDestroyContext ] when* f ] change-al-context
261 [ [ alcCloseDevice* ] when* f ] change-al-device
264 :: (audio-clip) ( audio-engine audio source loop? -- audio-clip/f )
265 audio-engine get-available-source :> al-source
268 audio-engine buffer-count>> :> buffer-count
269 buffer-count dup (uint-array) [ alGenBuffers ] keep :> al-buffers
271 audio-clip new-disposable
272 audio-engine >>audio-engine
276 al-source >>al-source
277 al-buffers >>al-buffers
278 0 >>next-data-offset :> clip
279 al-buffers [ clip swap queue-clip-buffer ] each
280 clip audio-engine clips>> push
285 M: audio-clip dispose*
287 [ al-source>> flush-source ]
288 [ al-buffers>> [ length ] keep alDeleteBuffers ]
289 [ dup audio-engine>> clips>> remove! drop ]
292 : play-clip ( audio-clip -- )
294 [ al-source>> alSourcePlay ] bi ;
296 : play-clips ( audio-clips -- )
297 [ [ update-source ] each ]
298 [ clip-al-sources alSourcePlayv ] bi ;
300 : <audio-clip> ( audio-engine audio source loop? -- audio-clip/f )
301 (audio-clip) dup play-clip ;
303 : pause-clip ( audio-clip -- )
304 al-source>> alSourcePause ;
306 : pause-clips ( audio-clip -- )
307 clip-al-sources alSourcePausev ;
309 : stop-clip ( audio-clip -- )
312 : stop-clips ( audio-clip -- )
313 [ clip-al-sources alSourceStopv ]
314 [ [ dispose ] each ] bi ;
316 : update-audio ( audio-engine -- )
318 [ make-engine-current ]
320 [ clips>> clone [ update-audio-clip ] each ]