M: audio-listener audio-velocity velocity>> ; inline
M: audio-listener audio-orientation orientation>> ; inline
+GENERIC# generate-audio 1 ( generator buffer-size -- c-ptr )
+GENERIC: generator-audio-format ( generator -- channels sample-bits sample-rate )
+
TUPLE: audio-engine < disposable
{ voice-count integer }
- { buffer-size integer }
- { buffer-count integer }
{ al-device c-ptr }
{ al-context c-ptr }
al-sources
TUPLE: audio-clip < disposable
{ audio-engine audio-engine }
- { audio audio }
source
- { loop? boolean }
- { al-source integer }
- { al-buffers uint-array }
- { next-data-offset integer } ;
+ { al-source integer } ;
+
+TUPLE: static-audio-clip < audio-clip
+ { al-buffer integer } ;
+
+TUPLE: streaming-audio-clip < audio-clip
+ generator
+ { buffer-size integer }
+ { channels integer }
+ { sample-bits integer }
+ { sample-rate integer }
+ { al-buffers uint-array } ;
ERROR: audio-device-not-found device-name ;
ERROR: audio-context-not-available device-name ;
-:: <audio-engine> ( device-name voice-count buffer-size buffer-count -- engine )
+:: <audio-engine> ( device-name voice-count -- engine )
[
device-name alcOpenDevice :> al-device
al-device [ device-name audio-device-not-found ] unless
voice-count >>voice-count
al-device >>al-device
al-context >>al-context
- buffer-size >>buffer-size
- buffer-count >>buffer-count
] with-destructors ;
: <standard-audio-engine> ( -- engine )
- f 16 8192 2 <audio-engine> ;
+ f 16 <audio-engine> ;
<PRIVATE
: allocate-sources ( audio-engine -- sources )
voice-count>> dup (uint-array) [ alGenSources ] keep ; inline
-:: flush-source ( source -- )
- source alSourceStop
+:: flush-source ( al-source -- )
+ al-source alSourceStop
0 c:<uint> :> dummy-buffer
- source AL_BUFFERS_PROCESSED get-source-param [
- source 1 dummy-buffer alSourceUnqueueBuffers
- ] times ;
+ al-source AL_BUFFERS_PROCESSED get-source-param [
+ al-source 1 dummy-buffer alSourceUnqueueBuffers
+ ] times
+ al-source AL_BUFFER 0 alSourcei ;
: free-sources ( sources -- )
[ length ] keep alDeleteSources ; inline
audio-clip [ size + ] change-next-data-offset drop ; inline
:: queue-clip-buffer ( audio-clip al-buffer -- )
- audio-clip audio-engine>> :> audio-engine
- audio-engine buffer-size>> :> buffer-size
- audio-clip audio>> :> audio
- audio-clip next-data-offset>> :> next-data-offset
- audio size>> next-data-offset - :> remaining-audio
+ audio-clip al-source>> :> al-source
+ audio-clip generator>> :> generator
+ audio-clip buffer-size>> :> buffer-size
+ generator buffer-size generate-audio :> data
- {
- { [ remaining-audio 0 <= ] [
- audio-clip loop?>> [
- audio-clip 0 >>next-data-offset
- al-buffer queue-clip-buffer
- ] when
- ] }
- { [ remaining-audio buffer-size < ] [
- audio-clip loop?>> [
- audio data>>
- [ next-data-offset swap <displaced-alien> remaining-audio <direct-uchar-array> ]
- [ buffer-size remaining-audio - <direct-uchar-array> ] bi append :> data
- audio-clip al-buffer audio data buffer-size (queue-clip-buffer)
-
- audio-clip [ audio size>> mod ] change-next-data-offset drop
- ] [
- next-data-offset audio data>> <displaced-alien> :> data
- audio-clip al-buffer audio data remaining-audio (queue-clip-buffer)
- ] if
- ] }
- [
- next-data-offset audio data>> <displaced-alien> :> data
- audio-clip al-buffer audio data buffer-size (queue-clip-buffer)
- ]
- } cond ;
+ al-buffer audio-clip openal-format data size audio-clip sample-rate>> alBufferData
+ al-source 1 al-buffer c:<uint> alSourceQueueBuffers ;
: update-listener ( audio-engine -- )
listener>> {
[ AL_ROLLOFF_FACTOR swap audio-rolloff alSourcef ]
} 2cleave ;
-:: update-audio-clip ( audio-clip -- )
- audio-clip update-source
+GENERIC: (update-audio-clip) ( audio-clip -- )
+
+M: static-audio-clip (update-audio-clip)
+ drop ;
+
+M:: streaming-audio-clip (update-audio-clip) ( audio-clip -- )
audio-clip al-source>> :> al-source
- 0 c:<uint> :> buffer*
-
- al-source AL_SOURCE_STATE get-source-param AL_STOPPED =
- [ audio-clip dispose ] [
- al-source AL_BUFFERS_PROCESSED get-source-param [
- al-source 1 buffer* alSourceUnqueueBuffers
- audio-clip buffer* c:*uint queue-clip-buffer
- ] times
- ] if ;
+ 0 c:<uint> :> buffer
+ al-source AL_BUFFERS_PROCESSED get-source-param [
+ al-source 1 buffer alSourceUnqueueBuffers
+ audio-clip buffer c:*uint queue-clip-buffer
+ ] times ;
+
+: update-audio-clip ( audio-clip -- )
+ [ update-source ] [
+ dup al-source>> AL_SOURCE_STATE get-source-param AL_STOPPED =
+ [ dispose ] [ (update-audio-clip) ] if
+ ] bi ;
: clip-al-sources ( clips -- length sources )
[ length ] [ [ al-source>> ] uint-array{ } map-as ] bi ;
[ [ alcCloseDevice* ] when* f ] change-al-device
drop ;
-:: (audio-clip) ( audio-engine audio source loop? -- audio-clip/f )
+:: <static-audio-clip> ( audio-engine audio source loop? -- audio-clip/f )
+ audio-engine get-available-source :> al-source
+
+ al-source [
+ 1 0 c:<uint> [ alGenBuffers ] keep c:*uint :> al-buffer
+ al-buffer audio { [ openal-format ] [ data>> ] [ size>> ] [ sample-rate>> ] } cleave
+ alBufferData
+
+ al-source AL_BUFFER al-buffer alSourcei
+ al-source AL_LOOPING loop? c:>c-bool alSourcei
+
+ static-audio-clip new-disposable
+ audio-engine >>audio-engine
+ source >>source
+ al-source >>al-source
+ al-buffer >>al-buffer :> clip
+ clip audio-engine clips>> push
+ clip
+ ] [ f ] if ;
+
+:: <streaming-audio-clip> ( audio-engine source generator buffer-size buffer-count -- audio-clip/f )
audio-engine get-available-source :> al-source
al-source [
- audio-engine buffer-count>> :> buffer-count
buffer-count dup (uint-array) [ alGenBuffers ] keep :> al-buffers
+ generator generator-audio-format :> ( channels sample-bits sample-rate )
audio-clip new-disposable
audio-engine >>audio-engine
- audio >>audio
source >>source
- loop? >>loop?
al-source >>al-source
+ generator >>generator
+ buffer-size >>buffer-size
+ channels >>channels
+ sample-bits >>sample-bits
+ sample-rate >>sample-rate
al-buffers >>al-buffers
- 0 >>next-data-offset :> clip
al-buffers [ clip swap queue-clip-buffer ] each
clip audio-engine clips>> push
-
clip
] [ f ] if ;
M: audio-clip dispose*
- {
- [ al-source>> flush-source ]
- [ al-buffers>> [ length ] keep alDeleteBuffers ]
- [ dup audio-engine>> clips>> remove! drop ]
- } cleave ;
+ [ audio-engine>> clips>> remove! drop ]
+ [ al-source>> flush-source ] bi ;
+
+M: static-audio-clip dispose*
+ [ call-next-method ]
+ [ [ 1 ] dip al-buffer>> <uint> alDeleteBuffers ] bi ;
+
+M: streaming-audio-clip dispose*
+ [ call-next-method ]
+ [ al-buffers>> [ length ] keep alDeleteBuffers ] bi ;
: play-clip ( audio-clip -- )
[ update-source ]
[ [ update-source ] each ]
[ clip-al-sources alSourcePlayv ] bi ;
-: <audio-clip> ( audio-engine audio source loop? -- audio-clip/f )
- (audio-clip) dup play-clip ;
+: play-static-audio-clip ( audio-engine source audio loop? -- audio-clip/f )
+ <static-audio-clip> dup [ play-clip ] when* ;
+
+: play-streaming-audio-clip ( audio-engine source generator buffer-size buffer-count -- audio-clip/f )
+ <streaming-audio-clip> dup [ play-clip ] when* ;
: pause-clip ( audio-clip -- )
al-source>> alSourcePause ;