2 * OpenAL cross platform audio library
3 * Copyright (C) 1999-2007 by authors.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 * Or go to http://www.gnu.org/copyleft/lgpl.html
21 #define _CRT_SECURE_NO_DEPRECATE // get rid of sprintf security warnings on VS2005
32 #include "alListener.h"
33 #include "alAuxEffectSlot.h"
36 #if defined(HAVE_STDINT_H)
38 typedef int64_t ALint64
;
39 #elif defined(HAVE___INT64)
40 typedef __int64 ALint64
;
41 #elif (SIZEOF_LONG == 8)
43 #elif (SIZEOF_LONG_LONG == 8)
44 typedef long long ALint64
;
48 #define aluSqrt(x) ((ALfloat)sqrtf((float)(x)))
50 #define aluSqrt(x) ((ALfloat)sqrt((double)(x)))
54 #define aluAcos(x) ((ALfloat)acosf((float)(x)))
56 #define aluAcos(x) ((ALfloat)acos((double)(x)))
60 #if defined(max) && !defined(__max)
63 #if defined(min) && !defined(__min)
67 #define BUFFERSIZE 48000
68 #define FRACTIONBITS 14
69 #define FRACTIONMASK ((1L<<FRACTIONBITS)-1)
85 /* NOTE: The AL_FORMAT_REAR* enums aren't handled here be cause they're
86 * converted to AL_FORMAT_QUAD* when loaded */
87 __inline ALuint
aluBytesFromFormat(ALenum format
)
92 case AL_FORMAT_STEREO8
:
93 case AL_FORMAT_QUAD8_LOKI
:
95 case AL_FORMAT_51CHN8
:
96 case AL_FORMAT_61CHN8
:
97 case AL_FORMAT_71CHN8
:
100 case AL_FORMAT_MONO16
:
101 case AL_FORMAT_STEREO16
:
102 case AL_FORMAT_QUAD16_LOKI
:
103 case AL_FORMAT_QUAD16
:
104 case AL_FORMAT_51CHN16
:
105 case AL_FORMAT_61CHN16
:
106 case AL_FORMAT_71CHN16
:
109 case AL_FORMAT_MONO_FLOAT32
:
110 case AL_FORMAT_STEREO_FLOAT32
:
111 case AL_FORMAT_QUAD32
:
112 case AL_FORMAT_51CHN32
:
113 case AL_FORMAT_61CHN32
:
114 case AL_FORMAT_71CHN32
:
122 __inline ALuint
aluChannelsFromFormat(ALenum format
)
126 case AL_FORMAT_MONO8
:
127 case AL_FORMAT_MONO16
:
128 case AL_FORMAT_MONO_FLOAT32
:
131 case AL_FORMAT_STEREO8
:
132 case AL_FORMAT_STEREO16
:
133 case AL_FORMAT_STEREO_FLOAT32
:
136 case AL_FORMAT_QUAD8_LOKI
:
137 case AL_FORMAT_QUAD16_LOKI
:
138 case AL_FORMAT_QUAD8
:
139 case AL_FORMAT_QUAD16
:
140 case AL_FORMAT_QUAD32
:
143 case AL_FORMAT_51CHN8
:
144 case AL_FORMAT_51CHN16
:
145 case AL_FORMAT_51CHN32
:
148 case AL_FORMAT_61CHN8
:
149 case AL_FORMAT_61CHN16
:
150 case AL_FORMAT_61CHN32
:
153 case AL_FORMAT_71CHN8
:
154 case AL_FORMAT_71CHN16
:
155 case AL_FORMAT_71CHN32
:
163 static __inline ALint
aluF2L(ALfloat Value
)
166 if(sizeof(ALint
) == 4 && sizeof(double) == 8)
169 temp
= Value
+ (((65536.0*65536.0*16.0)+(65536.0*65536.0*8.0))*65536.0);
170 return *((ALint
*)&temp
);
176 static __inline ALshort
aluF2S(ALfloat Value
)
181 i
= __min( 32767, i
);
182 i
= __max(-32768, i
);
186 static __inline ALvoid
aluCrossproduct(ALfloat
*inVector1
,ALfloat
*inVector2
,ALfloat
*outVector
)
188 outVector
[0] = inVector1
[1]*inVector2
[2] - inVector1
[2]*inVector2
[1];
189 outVector
[1] = inVector1
[2]*inVector2
[0] - inVector1
[0]*inVector2
[2];
190 outVector
[2] = inVector1
[0]*inVector2
[1] - inVector1
[1]*inVector2
[0];
193 static __inline ALfloat
aluDotproduct(ALfloat
*inVector1
,ALfloat
*inVector2
)
195 return inVector1
[0]*inVector2
[0] + inVector1
[1]*inVector2
[1] +
196 inVector1
[2]*inVector2
[2];
199 static __inline ALvoid
aluNormalize(ALfloat
*inVector
)
201 ALfloat length
, inverse_length
;
203 length
= (ALfloat
)aluSqrt(aluDotproduct(inVector
, inVector
));
206 inverse_length
= 1.0f
/length
;
207 inVector
[0] *= inverse_length
;
208 inVector
[1] *= inverse_length
;
209 inVector
[2] *= inverse_length
;
213 static __inline ALvoid
aluMatrixVector(ALfloat
*vector
,ALfloat matrix
[3][3])
217 result
[0] = vector
[0]*matrix
[0][0] + vector
[1]*matrix
[1][0] + vector
[2]*matrix
[2][0];
218 result
[1] = vector
[0]*matrix
[0][1] + vector
[1]*matrix
[1][1] + vector
[2]*matrix
[2][1];
219 result
[2] = vector
[0]*matrix
[0][2] + vector
[1]*matrix
[1][2] + vector
[2]*matrix
[2][2];
220 memcpy(vector
, result
, sizeof(result
));
223 static __inline ALfloat
aluComputeDrySample(ALsource
*source
, ALfloat DryGainHF
, ALfloat sample
)
230 sample
+= source
->LastDrySample
* (1.0f
-DryGainHF
);
236 source
->LastDrySample
= sample
;
240 static __inline ALfloat
aluComputeWetSample(ALsource
*source
, ALfloat WetGainHF
, ALfloat sample
)
247 sample
+= source
->LastWetSample
* (1.0f
-WetGainHF
);
253 source
->LastWetSample
= sample
;
257 static ALvoid
CalcSourceParams(ALCcontext
*ALContext
, ALsource
*ALSource
,
258 ALenum isMono
, ALenum OutputFormat
,
259 ALfloat
*drysend
, ALfloat
*wetsend
,
260 ALfloat
*pitch
, ALfloat
*drygainhf
,
263 ALfloat InnerAngle
,OuterAngle
,Angle
,Distance
,DryMix
,WetMix
=0.0f
;
264 ALfloat Direction
[3],Position
[3],SourceToListener
[3];
265 ALfloat MinVolume
,MaxVolume
,MinDist
,MaxDist
,Rolloff
,OuterGainHF
;
266 ALfloat ConeVolume
,SourceVolume
,PanningFB
,PanningLR
,ListenerGain
;
267 ALfloat U
[3],V
[3],N
[3];
268 ALfloat DopplerFactor
, DopplerVelocity
, flSpeedOfSound
, flMaxVelocity
;
269 ALfloat Matrix
[3][3];
270 ALfloat flAttenuation
;
271 ALfloat RoomAttenuation
;
272 ALfloat MetersPerUnit
;
274 ALfloat DryGainHF
= 1.0f
;
275 ALfloat WetGainHF
= 1.0f
;
277 //Get context properties
278 DopplerFactor
= ALContext
->DopplerFactor
;
279 DopplerVelocity
= ALContext
->DopplerVelocity
;
280 flSpeedOfSound
= ALContext
->flSpeedOfSound
;
282 //Get listener properties
283 ListenerGain
= ALContext
->Listener
.Gain
;
284 MetersPerUnit
= ALContext
->Listener
.MetersPerUnit
;
286 //Get source properties
287 SourceVolume
= ALSource
->flGain
;
288 memcpy(Position
, ALSource
->vPosition
, sizeof(ALSource
->vPosition
));
289 memcpy(Direction
, ALSource
->vOrientation
, sizeof(ALSource
->vOrientation
));
290 MinVolume
= ALSource
->flMinGain
;
291 MaxVolume
= ALSource
->flMaxGain
;
292 MinDist
= ALSource
->flRefDistance
;
293 MaxDist
= ALSource
->flMaxDistance
;
294 Rolloff
= ALSource
->flRollOffFactor
;
295 InnerAngle
= ALSource
->flInnerAngle
;
296 OuterAngle
= ALSource
->flOuterAngle
;
297 OuterGainHF
= ALSource
->OuterGainHF
;
298 RoomRolloff
= ALSource
->RoomRolloffFactor
;
300 //Only apply 3D calculations for mono buffers
301 if(isMono
!= AL_FALSE
)
303 //1. Translate Listener to origin (convert to head relative)
304 if(ALSource
->bHeadRelative
==AL_FALSE
)
306 Position
[0] -= ALContext
->Listener
.Position
[0];
307 Position
[1] -= ALContext
->Listener
.Position
[1];
308 Position
[2] -= ALContext
->Listener
.Position
[2];
311 //2. Calculate distance attenuation
312 Distance
= aluSqrt(aluDotproduct(Position
, Position
));
314 if(ALSource
->Send
[0].Slot
&& !ALSource
->Send
[0].Slot
->AuxSendAuto
)
316 if(ALSource
->Send
[0].Slot
->effect
.type
== AL_EFFECT_REVERB
)
317 RoomRolloff
= ALSource
->Send
[0].Slot
->effect
.Reverb
.RoomRolloffFactor
;
320 flAttenuation
= 1.0f
;
321 RoomAttenuation
= 1.0f
;
322 switch (ALContext
->DistanceModel
)
324 case AL_INVERSE_DISTANCE_CLAMPED
:
325 Distance
=__max(Distance
,MinDist
);
326 Distance
=__min(Distance
,MaxDist
);
327 if (MaxDist
< MinDist
)
330 case AL_INVERSE_DISTANCE
:
333 if ((MinDist
+ (Rolloff
* (Distance
- MinDist
))) > 0.0f
)
334 flAttenuation
= MinDist
/ (MinDist
+ (Rolloff
* (Distance
- MinDist
)));
335 if ((MinDist
+ (RoomRolloff
* (Distance
- MinDist
))) > 0.0f
)
336 RoomAttenuation
= MinDist
/ (MinDist
+ (RoomRolloff
* (Distance
- MinDist
)));
340 case AL_LINEAR_DISTANCE_CLAMPED
:
341 Distance
=__max(Distance
,MinDist
);
342 Distance
=__min(Distance
,MaxDist
);
343 if (MaxDist
< MinDist
)
346 case AL_LINEAR_DISTANCE
:
347 Distance
=__min(Distance
,MaxDist
);
348 if (MaxDist
!= MinDist
)
350 flAttenuation
= 1.0f
- (Rolloff
*(Distance
-MinDist
)/(MaxDist
- MinDist
));
351 RoomAttenuation
= 1.0f
- (RoomRolloff
*(Distance
-MinDist
)/(MaxDist
- MinDist
));
355 case AL_EXPONENT_DISTANCE_CLAMPED
:
356 Distance
=__max(Distance
,MinDist
);
357 Distance
=__min(Distance
,MaxDist
);
358 if (MaxDist
< MinDist
)
361 case AL_EXPONENT_DISTANCE
:
362 if ((Distance
> 0.0f
) && (MinDist
> 0.0f
))
364 flAttenuation
= (ALfloat
)pow(Distance
/MinDist
, -Rolloff
);
365 RoomAttenuation
= (ALfloat
)pow(Distance
/MinDist
, -RoomRolloff
);
371 flAttenuation
= 1.0f
;
372 RoomAttenuation
= 1.0f
;
376 // Source Gain + Attenuation and clamp to Min/Max Gain
377 DryMix
= SourceVolume
* flAttenuation
;
378 DryMix
= __min(DryMix
,MaxVolume
);
379 DryMix
= __max(DryMix
,MinVolume
);
381 WetMix
= SourceVolume
* (ALSource
->WetGainAuto
?
382 RoomAttenuation
: 1.0f
);
383 WetMix
= __min(WetMix
,MaxVolume
);
384 WetMix
= __max(WetMix
,MinVolume
);
386 //3. Apply directional soundcones
387 SourceToListener
[0] = -Position
[0];
388 SourceToListener
[1] = -Position
[1];
389 SourceToListener
[2] = -Position
[2];
390 aluNormalize(Direction
);
391 aluNormalize(SourceToListener
);
392 Angle
= aluAcos(aluDotproduct(Direction
,SourceToListener
)) * 180.0f
/
394 if(Angle
>= InnerAngle
&& Angle
<= OuterAngle
)
396 ALfloat scale
= (Angle
-InnerAngle
) / (OuterAngle
-InnerAngle
);
397 ConeVolume
= (1.0f
+(ALSource
->flOuterGain
-1.0f
)*scale
);
398 if(ALSource
->WetGainAuto
)
399 WetMix
*= ConeVolume
;
400 if(ALSource
->DryGainHFAuto
)
401 DryGainHF
*= (1.0f
+(OuterGainHF
-1.0f
)*scale
);
402 if(ALSource
->WetGainHFAuto
)
403 WetGainHF
*= (1.0f
+(OuterGainHF
-1.0f
)*scale
);
405 else if(Angle
> OuterAngle
)
407 ConeVolume
= (1.0f
+(ALSource
->flOuterGain
-1.0f
));
408 if(ALSource
->WetGainAuto
)
409 WetMix
*= ConeVolume
;
410 if(ALSource
->DryGainHFAuto
)
411 DryGainHF
*= (1.0f
+(OuterGainHF
-1.0f
));
412 if(ALSource
->WetGainHFAuto
)
413 WetGainHF
*= (1.0f
+(OuterGainHF
-1.0f
));
418 //4. Calculate Velocity
419 if(DopplerFactor
!= 0.0f
)
421 ALfloat flVSS
, flVLS
;
423 flVLS
= aluDotproduct(ALContext
->Listener
.Velocity
,
425 flVSS
= aluDotproduct(ALSource
->vVelocity
, SourceToListener
);
427 flMaxVelocity
= (DopplerVelocity
* flSpeedOfSound
) / DopplerFactor
;
429 if (flVSS
>= flMaxVelocity
)
430 flVSS
= (flMaxVelocity
- 1.0f
);
431 else if (flVSS
<= -flMaxVelocity
)
432 flVSS
= -flMaxVelocity
+ 1.0f
;
434 if (flVLS
>= flMaxVelocity
)
435 flVLS
= (flMaxVelocity
- 1.0f
);
436 else if (flVLS
<= -flMaxVelocity
)
437 flVLS
= -flMaxVelocity
+ 1.0f
;
439 pitch
[0] = ALSource
->flPitch
*
440 ((flSpeedOfSound
* DopplerVelocity
) - (DopplerFactor
* flVLS
)) /
441 ((flSpeedOfSound
* DopplerVelocity
) - (DopplerFactor
* flVSS
));
444 pitch
[0] = ALSource
->flPitch
;
446 //5. Align coordinate system axes
447 aluCrossproduct(ALContext
->Listener
.Forward
, ALContext
->Listener
.Up
, U
); // Right-vector
448 aluNormalize(U
); // Normalized Right-vector
449 memcpy(V
, ALContext
->Listener
.Up
, sizeof(V
)); // Up-vector
450 aluNormalize(V
); // Normalized Up-vector
451 memcpy(N
, ALContext
->Listener
.Forward
, sizeof(N
)); // At-vector
452 aluNormalize(N
); // Normalized At-vector
453 Matrix
[0][0] = U
[0]; Matrix
[0][1] = V
[0]; Matrix
[0][2] = -N
[0];
454 Matrix
[1][0] = U
[1]; Matrix
[1][1] = V
[1]; Matrix
[1][2] = -N
[1];
455 Matrix
[2][0] = U
[2]; Matrix
[2][1] = V
[2]; Matrix
[2][2] = -N
[2];
456 aluMatrixVector(Position
, Matrix
);
458 //6. Apply filter gains and filters
459 switch(ALSource
->DirectFilter
.filter
)
461 case AL_FILTER_LOWPASS
:
462 DryMix
*= ALSource
->DirectFilter
.Gain
;
463 DryGainHF
*= ALSource
->DirectFilter
.GainHF
;
467 switch(ALSource
->Send
[0].WetFilter
.filter
)
469 case AL_FILTER_LOWPASS
:
470 WetMix
*= ALSource
->Send
[0].WetFilter
.Gain
;
471 WetGainHF
*= ALSource
->Send
[0].WetFilter
.GainHF
;
475 if(ALSource
->AirAbsorptionFactor
> 0.0f
)
476 DryGainHF
*= pow(ALSource
->AirAbsorptionFactor
* AIRABSORBGAINHF
,
477 Distance
* MetersPerUnit
);
479 if(ALSource
->Send
[0].Slot
)
481 WetMix
*= ALSource
->Send
[0].Slot
->Gain
;
483 if(ALSource
->Send
[0].Slot
->effect
.type
== AL_EFFECT_REVERB
)
485 WetGainHF
*= ALSource
->Send
[0].Slot
->effect
.Reverb
.GainHF
;
486 WetGainHF
*= pow(ALSource
->Send
[0].Slot
->effect
.Reverb
.AirAbsorptionGainHF
,
487 Distance
* MetersPerUnit
);
496 DryMix
*= ListenerGain
* ConeVolume
;
497 WetMix
*= ListenerGain
;
499 //7. Convert normalized position into pannings, then into channel volumes
500 aluNormalize(Position
);
501 switch(aluChannelsFromFormat(OutputFormat
))
504 drysend
[FRONT_LEFT
] = DryMix
* aluSqrt(1.0f
); //Direct
505 drysend
[FRONT_RIGHT
] = DryMix
* aluSqrt(1.0f
); //Direct
506 wetsend
[FRONT_LEFT
] = WetMix
* aluSqrt(1.0f
); //Room
507 wetsend
[FRONT_RIGHT
] = WetMix
* aluSqrt(1.0f
); //Room
510 PanningLR
= 0.5f
+ 0.5f
*Position
[0];
511 drysend
[FRONT_LEFT
] = DryMix
* aluSqrt(1.0f
-PanningLR
); //L Direct
512 drysend
[FRONT_RIGHT
] = DryMix
* aluSqrt( PanningLR
); //R Direct
513 wetsend
[FRONT_LEFT
] = WetMix
* aluSqrt(1.0f
-PanningLR
); //L Room
514 wetsend
[FRONT_RIGHT
] = WetMix
* aluSqrt( PanningLR
); //R Room
517 /* TODO: Add center/lfe channel in spatial calculations? */
519 // Apply a scalar so each individual speaker has more weight
520 PanningLR
= 0.5f
+ (0.5f
*Position
[0]*1.41421356f
);
521 PanningLR
= __min(1.0f
, PanningLR
);
522 PanningLR
= __max(0.0f
, PanningLR
);
523 PanningFB
= 0.5f
+ (0.5f
*Position
[2]*1.41421356f
);
524 PanningFB
= __min(1.0f
, PanningFB
);
525 PanningFB
= __max(0.0f
, PanningFB
);
526 drysend
[FRONT_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
527 drysend
[FRONT_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
528 drysend
[BACK_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
529 drysend
[BACK_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
530 wetsend
[FRONT_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
531 wetsend
[FRONT_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
532 wetsend
[BACK_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
533 wetsend
[BACK_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
537 PanningFB
= 1.0f
- fabs(Position
[2]*1.15470054f
);
538 PanningFB
= __min(1.0f
, PanningFB
);
539 PanningFB
= __max(0.0f
, PanningFB
);
540 PanningLR
= 0.5f
+ (0.5*Position
[0]*((1.0f
-PanningFB
)*2.0f
));
541 PanningLR
= __min(1.0f
, PanningLR
);
542 PanningLR
= __max(0.0f
, PanningLR
);
543 if(Position
[2] > 0.0f
)
545 drysend
[BACK_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
546 drysend
[BACK_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
547 drysend
[SIDE_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
548 drysend
[SIDE_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
549 drysend
[FRONT_LEFT
] = 0.0f
;
550 drysend
[FRONT_RIGHT
] = 0.0f
;
551 wetsend
[BACK_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
552 wetsend
[BACK_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
553 wetsend
[SIDE_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
554 wetsend
[SIDE_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
555 wetsend
[FRONT_LEFT
] = 0.0f
;
556 wetsend
[FRONT_RIGHT
] = 0.0f
;
560 drysend
[FRONT_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
561 drysend
[FRONT_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
562 drysend
[SIDE_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
563 drysend
[SIDE_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
564 drysend
[BACK_LEFT
] = 0.0f
;
565 drysend
[BACK_RIGHT
] = 0.0f
;
566 wetsend
[FRONT_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
567 wetsend
[FRONT_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
568 wetsend
[SIDE_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
569 wetsend
[SIDE_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
570 wetsend
[BACK_LEFT
] = 0.0f
;
571 wetsend
[BACK_RIGHT
] = 0.0f
;
577 *drygainhf
= DryGainHF
;
578 *wetgainhf
= WetGainHF
;
582 //1. Multi-channel buffers always play "normal"
583 pitch
[0] = ALSource
->flPitch
;
585 drysend
[FRONT_LEFT
] = SourceVolume
* ListenerGain
;
586 drysend
[FRONT_RIGHT
] = SourceVolume
* ListenerGain
;
587 drysend
[SIDE_LEFT
] = SourceVolume
* ListenerGain
;
588 drysend
[SIDE_RIGHT
] = SourceVolume
* ListenerGain
;
589 drysend
[BACK_LEFT
] = SourceVolume
* ListenerGain
;
590 drysend
[BACK_RIGHT
] = SourceVolume
* ListenerGain
;
591 drysend
[CENTER
] = SourceVolume
* ListenerGain
;
592 drysend
[LFE
] = SourceVolume
* ListenerGain
;
593 wetsend
[FRONT_LEFT
] = 0.0f
;
594 wetsend
[FRONT_RIGHT
] = 0.0f
;
595 wetsend
[SIDE_LEFT
] = 0.0f
;
596 wetsend
[SIDE_RIGHT
] = 0.0f
;
597 wetsend
[BACK_LEFT
] = 0.0f
;
598 wetsend
[BACK_RIGHT
] = 0.0f
;
599 wetsend
[CENTER
] = 0.0f
;
603 *drygainhf
= DryGainHF
;
604 *wetgainhf
= WetGainHF
;
608 ALvoid
aluMixData(ALCcontext
*ALContext
,ALvoid
*buffer
,ALsizei size
,ALenum format
)
610 static float DryBuffer
[BUFFERSIZE
][OUTPUTCHANNELS
];
611 static float WetBuffer
[BUFFERSIZE
][OUTPUTCHANNELS
];
612 static float ReverbBuffer
[BUFFERSIZE
];
613 ALfloat DrySend
[OUTPUTCHANNELS
] = { 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
};
614 ALfloat WetSend
[OUTPUTCHANNELS
] = { 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
};
615 ALfloat DryGainHF
= 0.0f
;
616 ALfloat WetGainHF
= 0.0f
;
617 ALuint BlockAlign
,BufferSize
;
618 ALuint DataSize
=0,DataPosInt
=0,DataPosFrac
=0;
619 ALuint Channels
,Frequency
,ulExtraSamples
;
622 ALint Looping
,increment
,State
;
623 ALuint Buffer
,fraction
;
627 ALeffectslot
*ALEffectSlot
;
631 ALbufferlistitem
*BufferListItem
;
633 ALint64 DataSize64
,DataPos64
;
635 SuspendContext(ALContext
);
639 //Figure output format variables
640 BlockAlign
= aluChannelsFromFormat(format
);
641 BlockAlign
*= aluBytesFromFormat(format
);
647 ALSource
= (ALContext
? ALContext
->Source
: NULL
);
648 SamplesToDo
= min(size
, BUFFERSIZE
);
650 //Clear mixing buffer
651 memset(DryBuffer
, 0, SamplesToDo
*OUTPUTCHANNELS
*sizeof(ALfloat
));
652 memset(WetBuffer
, 0, SamplesToDo
*OUTPUTCHANNELS
*sizeof(ALfloat
));
653 memset(ReverbBuffer
, 0, SamplesToDo
*sizeof(ALfloat
));
659 State
= ALSource
->state
;
661 doReverb
= ((ALSource
->Send
[0].Slot
&&
662 ALSource
->Send
[0].Slot
->effect
.type
== AL_EFFECT_REVERB
) ?
665 while(State
== AL_PLAYING
&& j
< SamplesToDo
)
672 if((Buffer
= ALSource
->ulBufferID
))
674 ALBuffer
= (ALbuffer
*)ALTHUNK_LOOKUPENTRY(Buffer
);
676 Data
= ALBuffer
->data
;
677 Channels
= aluChannelsFromFormat(ALBuffer
->format
);
678 DataSize
= ALBuffer
->size
;
679 Frequency
= ALBuffer
->frequency
;
681 CalcSourceParams(ALContext
, ALSource
,
682 (Channels
==1) ? AL_TRUE
: AL_FALSE
,
683 format
, DrySend
, WetSend
, &Pitch
,
684 &DryGainHF
, &WetGainHF
);
687 Pitch
= (Pitch
*Frequency
) / ALContext
->Frequency
;
688 DataSize
/= Channels
* aluBytesFromFormat(ALBuffer
->format
);
691 DataPosInt
= ALSource
->position
;
692 DataPosFrac
= ALSource
->position_fraction
;
694 //Compute 18.14 fixed point step
695 increment
= aluF2L(Pitch
*(1L<<FRACTIONBITS
));
696 if(increment
> (MAX_PITCH
<<FRACTIONBITS
))
697 increment
= (MAX_PITCH
<<FRACTIONBITS
);
699 //Figure out how many samples we can mix.
700 //Pitch must be <= 4 (the number below !)
701 DataSize64
= DataSize
+MAX_PITCH
;
702 DataSize64
<<= FRACTIONBITS
;
703 DataPos64
= DataPosInt
;
704 DataPos64
<<= FRACTIONBITS
;
705 DataPos64
+= DataPosFrac
;
706 BufferSize
= (ALuint
)((DataSize64
-DataPos64
) / increment
);
707 BufferListItem
= ALSource
->queue
;
708 for(loop
= 0; loop
< ALSource
->BuffersPlayed
; loop
++)
711 BufferListItem
= BufferListItem
->next
;
715 if (BufferListItem
->next
)
717 if(BufferListItem
->next
->buffer
&&
718 ((ALbuffer
*)ALTHUNK_LOOKUPENTRY(BufferListItem
->next
->buffer
))->data
)
720 ulExtraSamples
= min(((ALbuffer
*)ALTHUNK_LOOKUPENTRY(BufferListItem
->next
->buffer
))->size
, (ALint
)(16*Channels
));
721 memcpy(&Data
[DataSize
*Channels
], ((ALbuffer
*)ALTHUNK_LOOKUPENTRY(BufferListItem
->next
->buffer
))->data
, ulExtraSamples
);
724 else if (ALSource
->bLooping
)
726 if (ALSource
->queue
->buffer
)
728 if(((ALbuffer
*)ALTHUNK_LOOKUPENTRY(ALSource
->queue
->buffer
))->data
)
730 ulExtraSamples
= min(((ALbuffer
*)ALTHUNK_LOOKUPENTRY(ALSource
->queue
->buffer
))->size
, (ALint
)(16*Channels
));
731 memcpy(&Data
[DataSize
*Channels
], ((ALbuffer
*)ALTHUNK_LOOKUPENTRY(ALSource
->queue
->buffer
))->data
, ulExtraSamples
);
736 BufferSize
= min(BufferSize
, (SamplesToDo
-j
));
738 //Actual sample mixing loop
739 Data
+= DataPosInt
*Channels
;
742 k
= DataPosFrac
>>FRACTIONBITS
;
743 fraction
= DataPosFrac
&FRACTIONMASK
;
746 //First order interpolator
747 ALfloat sample
= (ALfloat
)((ALshort
)(((Data
[k
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[k
+1]*(fraction
)))>>FRACTIONBITS
));
749 //Direct path final mix buffer and panning
750 value
= aluComputeDrySample(ALSource
, DryGainHF
, sample
);
751 DryBuffer
[j
][FRONT_LEFT
] += value
*DrySend
[FRONT_LEFT
];
752 DryBuffer
[j
][FRONT_RIGHT
] += value
*DrySend
[FRONT_RIGHT
];
753 DryBuffer
[j
][SIDE_LEFT
] += value
*DrySend
[SIDE_LEFT
];
754 DryBuffer
[j
][SIDE_RIGHT
] += value
*DrySend
[SIDE_RIGHT
];
755 DryBuffer
[j
][BACK_LEFT
] += value
*DrySend
[BACK_LEFT
];
756 DryBuffer
[j
][BACK_RIGHT
] += value
*DrySend
[BACK_RIGHT
];
757 //Room path final mix buffer and panning
758 value
= aluComputeWetSample(ALSource
, WetGainHF
, sample
);
760 ReverbBuffer
[j
] += value
;
763 WetBuffer
[j
][FRONT_LEFT
] += value
*WetSend
[FRONT_LEFT
];
764 WetBuffer
[j
][FRONT_RIGHT
] += value
*WetSend
[FRONT_RIGHT
];
765 WetBuffer
[j
][SIDE_LEFT
] += value
*WetSend
[SIDE_LEFT
];
766 WetBuffer
[j
][SIDE_RIGHT
] += value
*WetSend
[SIDE_RIGHT
];
767 WetBuffer
[j
][BACK_LEFT
] += value
*WetSend
[BACK_LEFT
];
768 WetBuffer
[j
][BACK_RIGHT
] += value
*WetSend
[BACK_RIGHT
];
773 //First order interpolator (front left)
774 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
]*(fraction
)))>>FRACTIONBITS
));
775 DryBuffer
[j
][FRONT_LEFT
] += value
*DrySend
[FRONT_LEFT
];
776 WetBuffer
[j
][FRONT_LEFT
] += value
*WetSend
[FRONT_LEFT
];
777 //First order interpolator (front right)
778 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+1]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+1]*(fraction
)))>>FRACTIONBITS
));
779 DryBuffer
[j
][FRONT_RIGHT
] += value
*DrySend
[FRONT_RIGHT
];
780 WetBuffer
[j
][FRONT_RIGHT
] += value
*WetSend
[FRONT_RIGHT
];
788 //First order interpolator (center)
789 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
790 DryBuffer
[j
][CENTER
] += value
*DrySend
[CENTER
];
791 WetBuffer
[j
][CENTER
] += value
*WetSend
[CENTER
];
794 //First order interpolator (lfe)
795 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
796 DryBuffer
[j
][LFE
] += value
*DrySend
[LFE
];
797 WetBuffer
[j
][LFE
] += value
*WetSend
[LFE
];
800 //First order interpolator (back left)
801 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
802 DryBuffer
[j
][BACK_LEFT
] += value
*DrySend
[BACK_LEFT
];
803 WetBuffer
[j
][BACK_LEFT
] += value
*WetSend
[BACK_LEFT
];
805 //First order interpolator (back right)
806 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
807 DryBuffer
[j
][BACK_RIGHT
] += value
*DrySend
[BACK_RIGHT
];
808 WetBuffer
[j
][BACK_RIGHT
] += value
*WetSend
[BACK_RIGHT
];
812 //First order interpolator (side left)
813 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
814 DryBuffer
[j
][SIDE_LEFT
] += value
*DrySend
[SIDE_LEFT
];
815 WetBuffer
[j
][SIDE_LEFT
] += value
*WetSend
[SIDE_LEFT
];
817 //First order interpolator (side right)
818 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
819 DryBuffer
[j
][SIDE_RIGHT
] += value
*DrySend
[SIDE_RIGHT
];
820 WetBuffer
[j
][SIDE_RIGHT
] += value
*WetSend
[SIDE_RIGHT
];
825 DataPosFrac
+= increment
;
828 DataPosInt
+= (DataPosFrac
>>FRACTIONBITS
);
829 DataPosFrac
= (DataPosFrac
&FRACTIONMASK
);
832 ALSource
->position
= DataPosInt
;
833 ALSource
->position_fraction
= DataPosFrac
;
836 //Handle looping sources
837 if(!Buffer
|| DataPosInt
>= DataSize
)
842 Looping
= ALSource
->bLooping
;
843 if(ALSource
->BuffersPlayed
< (ALSource
->BuffersInQueue
-1))
845 BufferListItem
= ALSource
->queue
;
846 for(loop
= 0; loop
<= ALSource
->BuffersPlayed
; loop
++)
851 BufferListItem
->bufferstate
= PROCESSED
;
852 BufferListItem
= BufferListItem
->next
;
856 ALSource
->BuffersProcessed
++;
858 ALSource
->ulBufferID
= BufferListItem
->buffer
;
859 ALSource
->position
= DataPosInt
-DataSize
;
860 ALSource
->position_fraction
= DataPosFrac
;
861 ALSource
->BuffersPlayed
++;
868 ALSource
->state
= AL_STOPPED
;
869 ALSource
->inuse
= AL_FALSE
;
870 ALSource
->BuffersPlayed
= ALSource
->BuffersProcessed
= ALSource
->BuffersInQueue
;
871 BufferListItem
= ALSource
->queue
;
872 while(BufferListItem
!= NULL
)
874 BufferListItem
->bufferstate
= PROCESSED
;
875 BufferListItem
= BufferListItem
->next
;
882 ALSource
->state
= AL_PLAYING
;
883 ALSource
->inuse
= AL_TRUE
;
884 ALSource
->play
= AL_TRUE
;
885 ALSource
->BuffersPlayed
= 0;
886 ALSource
->BufferPosition
= 0;
887 ALSource
->lBytesPlayed
= 0;
888 ALSource
->BuffersProcessed
= 0;
889 BufferListItem
= ALSource
->queue
;
890 while(BufferListItem
!= NULL
)
892 BufferListItem
->bufferstate
= PENDING
;
893 BufferListItem
= BufferListItem
->next
;
895 ALSource
->ulBufferID
= ALSource
->queue
->buffer
;
897 ALSource
->position
= DataPosInt
-DataSize
;
898 ALSource
->position_fraction
= DataPosFrac
;
905 State
= ALSource
->state
;
908 ALSource
= ALSource
->next
;
911 ALEffectSlot
= (ALContext
? ALContext
->AuxiliaryEffectSlot
: NULL
);
914 if(ALEffectSlot
->effect
.type
== AL_EFFECT_REVERB
)
916 ALfloat
*DelayBuffer
= ALEffectSlot
->ReverbBuffer
;
917 ALuint Pos
= ALEffectSlot
->ReverbPos
;
918 ALuint LatePos
= ALEffectSlot
->ReverbLatePos
;
919 ALuint ReflectPos
= ALEffectSlot
->ReverbReflectPos
;
920 ALuint Length
= ALEffectSlot
->ReverbLength
;
921 ALfloat DecayGain
= ALEffectSlot
->ReverbDecayGain
;
922 ALfloat DecayHFRatio
= ALEffectSlot
->effect
.Reverb
.DecayHFRatio
;
923 ALfloat Gain
= ALEffectSlot
->effect
.Reverb
.Gain
;
924 ALfloat ReflectGain
= ALEffectSlot
->effect
.Reverb
.ReflectionsGain
;
925 ALfloat LateReverbGain
= ALEffectSlot
->effect
.Reverb
.LateReverbGain
;
926 ALfloat LastDecaySample
= ALEffectSlot
->LastDecaySample
;
929 for(i
= 0;i
< SamplesToDo
;i
++)
931 DelayBuffer
[Pos
] = ReverbBuffer
[i
] * Gain
;
933 sample
= DelayBuffer
[ReflectPos
] * ReflectGain
;
935 DelayBuffer
[LatePos
] *= LateReverbGain
;
937 Pos
= (Pos
+1) % Length
;
938 DelayBuffer
[Pos
] *= DecayHFRatio
;
939 DelayBuffer
[Pos
] += LastDecaySample
* (1.0f
-DecayHFRatio
);
940 LastDecaySample
= DelayBuffer
[Pos
];
941 DelayBuffer
[Pos
] *= DecayGain
;
943 DelayBuffer
[LatePos
] += DelayBuffer
[Pos
];
945 sample
+= DelayBuffer
[LatePos
];
947 WetBuffer
[i
][FRONT_LEFT
] += sample
;
948 WetBuffer
[i
][FRONT_RIGHT
] += sample
;
949 WetBuffer
[i
][SIDE_LEFT
] += sample
;
950 WetBuffer
[i
][SIDE_RIGHT
] += sample
;
951 WetBuffer
[i
][BACK_LEFT
] += sample
;
952 WetBuffer
[i
][BACK_RIGHT
] += sample
;
954 LatePos
= (LatePos
+1) % Length
;
955 ReflectPos
= (ReflectPos
+1) % Length
;
958 ALEffectSlot
->ReverbPos
= Pos
;
959 ALEffectSlot
->ReverbLatePos
= LatePos
;
960 ALEffectSlot
->ReverbReflectPos
= ReflectPos
;
961 ALEffectSlot
->LastDecaySample
= LastDecaySample
;
963 ALEffectSlot
= ALEffectSlot
->next
;
966 //Post processing loop
969 case AL_FORMAT_MONO8
:
970 for(i
= 0;i
< SamplesToDo
;i
++)
972 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
]+DryBuffer
[i
][FRONT_RIGHT
]+
973 WetBuffer
[i
][FRONT_LEFT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
974 buffer
= ((ALubyte
*)buffer
) + 1;
977 case AL_FORMAT_STEREO8
:
978 if(ALContext
&& ALContext
->bs2b
)
980 for(i
= 0;i
< SamplesToDo
;i
++)
983 samples
[0] = DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
];
984 samples
[1] = DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
];
985 bs2b_cross_feed(ALContext
->bs2b
, samples
);
986 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(samples
[0])>>8)+128);
987 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(samples
[1])>>8)+128);
988 buffer
= ((ALubyte
*)buffer
) + 2;
993 for(i
= 0;i
< SamplesToDo
;i
++)
995 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
996 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
997 buffer
= ((ALubyte
*)buffer
) + 2;
1001 case AL_FORMAT_QUAD8
:
1002 for(i
= 0;i
< SamplesToDo
;i
++)
1004 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
1005 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
1006 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1007 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1008 buffer
= ((ALubyte
*)buffer
) + 4;
1011 case AL_FORMAT_51CHN8
:
1012 for(i
= 0;i
< SamplesToDo
;i
++)
1014 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
1015 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
1016 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1017 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1018 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
])>>8)+128);
1019 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1020 buffer
= ((ALubyte
*)buffer
) + 6;
1023 case AL_FORMAT_61CHN8
:
1024 for(i
= 0;i
< SamplesToDo
;i
++)
1026 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
1027 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
1028 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
])>>8)+128);
1029 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
])>>8)+128);
1030 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1031 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1032 ((ALubyte
*)buffer
)[6] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1033 buffer
= ((ALubyte
*)buffer
) + 7;
1036 case AL_FORMAT_71CHN8
:
1037 for(i
= 0;i
< SamplesToDo
;i
++)
1039 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
1040 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
1041 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
])>>8)+128);
1042 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
])>>8)+128);
1043 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1044 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1045 ((ALubyte
*)buffer
)[6] = (ALubyte
)((aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
])>>8)+128);
1046 ((ALubyte
*)buffer
)[7] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1047 buffer
= ((ALubyte
*)buffer
) + 8;
1051 case AL_FORMAT_MONO16
:
1052 for(i
= 0;i
< SamplesToDo
;i
++)
1054 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
]+DryBuffer
[i
][FRONT_RIGHT
]+
1055 WetBuffer
[i
][FRONT_LEFT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1056 buffer
= ((ALshort
*)buffer
) + 1;
1059 case AL_FORMAT_STEREO16
:
1060 if(ALContext
&& ALContext
->bs2b
)
1062 for(i
= 0;i
< SamplesToDo
;i
++)
1065 samples
[0] = DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
];
1066 samples
[1] = DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
];
1067 bs2b_cross_feed(ALContext
->bs2b
, samples
);
1068 ((ALshort
*)buffer
)[0] = aluF2S(samples
[0]);
1069 ((ALshort
*)buffer
)[1] = aluF2S(samples
[1]);
1070 buffer
= ((ALshort
*)buffer
) + 2;
1075 for(i
= 0;i
< SamplesToDo
;i
++)
1077 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1078 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1079 buffer
= ((ALshort
*)buffer
) + 2;
1083 case AL_FORMAT_QUAD16
:
1084 for(i
= 0;i
< SamplesToDo
;i
++)
1086 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1087 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1088 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1089 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1090 buffer
= ((ALshort
*)buffer
) + 4;
1093 case AL_FORMAT_51CHN16
:
1094 for(i
= 0;i
< SamplesToDo
;i
++)
1096 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1097 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1098 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1099 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1100 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
]);
1101 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1102 buffer
= ((ALshort
*)buffer
) + 6;
1105 case AL_FORMAT_61CHN16
:
1106 for(i
= 0;i
< SamplesToDo
;i
++)
1108 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1109 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1110 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
]);
1111 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
]);
1112 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1113 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1114 ((ALshort
*)buffer
)[6] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1115 buffer
= ((ALshort
*)buffer
) + 7;
1118 case AL_FORMAT_71CHN16
:
1119 for(i
= 0;i
< SamplesToDo
;i
++)
1121 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1122 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1123 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
]);
1124 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
]);
1125 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1126 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1127 ((ALshort
*)buffer
)[6] = aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
]);
1128 ((ALshort
*)buffer
)[7] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1129 buffer
= ((ALshort
*)buffer
) + 8;
1137 size
-= SamplesToDo
;
1141 ProcessContext(ALContext
);