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
aluComputeSample(ALfloat GainHF
, ALfloat sample
, ALfloat LastSample
)
230 sample
+= LastSample
* (1.0f
-GainHF
);
239 static ALvoid
CalcSourceParams(ALCcontext
*ALContext
, ALsource
*ALSource
,
240 ALenum isMono
, ALenum OutputFormat
,
241 ALfloat
*drysend
, ALfloat
*wetsend
,
242 ALfloat
*pitch
, ALfloat
*drygainhf
,
245 ALfloat InnerAngle
,OuterAngle
,Angle
,Distance
,DryMix
,WetMix
=0.0f
;
246 ALfloat Direction
[3],Position
[3],SourceToListener
[3];
247 ALfloat MinVolume
,MaxVolume
,MinDist
,MaxDist
,Rolloff
,OuterGainHF
;
248 ALfloat ConeVolume
,SourceVolume
,PanningFB
,PanningLR
,ListenerGain
;
249 ALfloat U
[3],V
[3],N
[3];
250 ALfloat DopplerFactor
, DopplerVelocity
, flSpeedOfSound
, flMaxVelocity
;
251 ALfloat Matrix
[3][3];
252 ALfloat flAttenuation
;
253 ALfloat RoomAttenuation
;
254 ALfloat MetersPerUnit
;
256 ALfloat DryGainHF
= 1.0f
;
257 ALfloat WetGainHF
= 1.0f
;
259 //Get context properties
260 DopplerFactor
= ALContext
->DopplerFactor
;
261 DopplerVelocity
= ALContext
->DopplerVelocity
;
262 flSpeedOfSound
= ALContext
->flSpeedOfSound
;
264 //Get listener properties
265 ListenerGain
= ALContext
->Listener
.Gain
;
266 MetersPerUnit
= ALContext
->Listener
.MetersPerUnit
;
268 //Get source properties
269 SourceVolume
= ALSource
->flGain
;
270 memcpy(Position
, ALSource
->vPosition
, sizeof(ALSource
->vPosition
));
271 memcpy(Direction
, ALSource
->vOrientation
, sizeof(ALSource
->vOrientation
));
272 MinVolume
= ALSource
->flMinGain
;
273 MaxVolume
= ALSource
->flMaxGain
;
274 MinDist
= ALSource
->flRefDistance
;
275 MaxDist
= ALSource
->flMaxDistance
;
276 Rolloff
= ALSource
->flRollOffFactor
;
277 InnerAngle
= ALSource
->flInnerAngle
;
278 OuterAngle
= ALSource
->flOuterAngle
;
279 OuterGainHF
= ALSource
->OuterGainHF
;
280 RoomRolloff
= ALSource
->RoomRolloffFactor
;
282 //Only apply 3D calculations for mono buffers
283 if(isMono
!= AL_FALSE
)
285 //1. Translate Listener to origin (convert to head relative)
286 if(ALSource
->bHeadRelative
==AL_FALSE
)
288 Position
[0] -= ALContext
->Listener
.Position
[0];
289 Position
[1] -= ALContext
->Listener
.Position
[1];
290 Position
[2] -= ALContext
->Listener
.Position
[2];
293 //2. Calculate distance attenuation
294 Distance
= aluSqrt(aluDotproduct(Position
, Position
));
296 if(ALSource
->Send
[0].Slot
&& !ALSource
->Send
[0].Slot
->AuxSendAuto
)
298 if(ALSource
->Send
[0].Slot
->effect
.type
== AL_EFFECT_REVERB
)
299 RoomRolloff
= ALSource
->Send
[0].Slot
->effect
.Reverb
.RoomRolloffFactor
;
302 flAttenuation
= 1.0f
;
303 RoomAttenuation
= 1.0f
;
304 switch (ALContext
->DistanceModel
)
306 case AL_INVERSE_DISTANCE_CLAMPED
:
307 Distance
=__max(Distance
,MinDist
);
308 Distance
=__min(Distance
,MaxDist
);
309 if (MaxDist
< MinDist
)
312 case AL_INVERSE_DISTANCE
:
315 if ((MinDist
+ (Rolloff
* (Distance
- MinDist
))) > 0.0f
)
316 flAttenuation
= MinDist
/ (MinDist
+ (Rolloff
* (Distance
- MinDist
)));
317 if ((MinDist
+ (RoomRolloff
* (Distance
- MinDist
))) > 0.0f
)
318 RoomAttenuation
= MinDist
/ (MinDist
+ (RoomRolloff
* (Distance
- MinDist
)));
322 case AL_LINEAR_DISTANCE_CLAMPED
:
323 Distance
=__max(Distance
,MinDist
);
324 Distance
=__min(Distance
,MaxDist
);
325 if (MaxDist
< MinDist
)
328 case AL_LINEAR_DISTANCE
:
329 Distance
=__min(Distance
,MaxDist
);
330 if (MaxDist
!= MinDist
)
332 flAttenuation
= 1.0f
- (Rolloff
*(Distance
-MinDist
)/(MaxDist
- MinDist
));
333 RoomAttenuation
= 1.0f
- (RoomRolloff
*(Distance
-MinDist
)/(MaxDist
- MinDist
));
337 case AL_EXPONENT_DISTANCE_CLAMPED
:
338 Distance
=__max(Distance
,MinDist
);
339 Distance
=__min(Distance
,MaxDist
);
340 if (MaxDist
< MinDist
)
343 case AL_EXPONENT_DISTANCE
:
344 if ((Distance
> 0.0f
) && (MinDist
> 0.0f
))
346 flAttenuation
= (ALfloat
)pow(Distance
/MinDist
, -Rolloff
);
347 RoomAttenuation
= (ALfloat
)pow(Distance
/MinDist
, -RoomRolloff
);
353 flAttenuation
= 1.0f
;
354 RoomAttenuation
= 1.0f
;
358 // Source Gain + Attenuation and clamp to Min/Max Gain
359 DryMix
= SourceVolume
* flAttenuation
;
360 DryMix
= __min(DryMix
,MaxVolume
);
361 DryMix
= __max(DryMix
,MinVolume
);
363 WetMix
= SourceVolume
* (ALSource
->WetGainAuto
?
364 RoomAttenuation
: 1.0f
);
365 WetMix
= __min(WetMix
,MaxVolume
);
366 WetMix
= __max(WetMix
,MinVolume
);
368 //3. Apply directional soundcones
369 SourceToListener
[0] = -Position
[0];
370 SourceToListener
[1] = -Position
[1];
371 SourceToListener
[2] = -Position
[2];
372 aluNormalize(Direction
);
373 aluNormalize(SourceToListener
);
374 Angle
= aluAcos(aluDotproduct(Direction
,SourceToListener
)) * 180.0f
/
376 if(Angle
>= InnerAngle
&& Angle
<= OuterAngle
)
378 ALfloat scale
= (Angle
-InnerAngle
) / (OuterAngle
-InnerAngle
);
379 ConeVolume
= (1.0f
+(ALSource
->flOuterGain
-1.0f
)*scale
);
380 if(ALSource
->WetGainAuto
)
381 WetMix
*= ConeVolume
;
382 if(ALSource
->DryGainHFAuto
)
383 DryGainHF
*= (1.0f
+(OuterGainHF
-1.0f
)*scale
);
384 if(ALSource
->WetGainHFAuto
)
385 WetGainHF
*= (1.0f
+(OuterGainHF
-1.0f
)*scale
);
387 else if(Angle
> OuterAngle
)
389 ConeVolume
= (1.0f
+(ALSource
->flOuterGain
-1.0f
));
390 if(ALSource
->WetGainAuto
)
391 WetMix
*= ConeVolume
;
392 if(ALSource
->DryGainHFAuto
)
393 DryGainHF
*= (1.0f
+(OuterGainHF
-1.0f
));
394 if(ALSource
->WetGainHFAuto
)
395 WetGainHF
*= (1.0f
+(OuterGainHF
-1.0f
));
400 //4. Calculate Velocity
401 if(DopplerFactor
!= 0.0f
)
403 ALfloat flVSS
, flVLS
;
405 flVLS
= aluDotproduct(ALContext
->Listener
.Velocity
,
407 flVSS
= aluDotproduct(ALSource
->vVelocity
, SourceToListener
);
409 flMaxVelocity
= (DopplerVelocity
* flSpeedOfSound
) / DopplerFactor
;
411 if (flVSS
>= flMaxVelocity
)
412 flVSS
= (flMaxVelocity
- 1.0f
);
413 else if (flVSS
<= -flMaxVelocity
)
414 flVSS
= -flMaxVelocity
+ 1.0f
;
416 if (flVLS
>= flMaxVelocity
)
417 flVLS
= (flMaxVelocity
- 1.0f
);
418 else if (flVLS
<= -flMaxVelocity
)
419 flVLS
= -flMaxVelocity
+ 1.0f
;
421 pitch
[0] = ALSource
->flPitch
*
422 ((flSpeedOfSound
* DopplerVelocity
) - (DopplerFactor
* flVLS
)) /
423 ((flSpeedOfSound
* DopplerVelocity
) - (DopplerFactor
* flVSS
));
426 pitch
[0] = ALSource
->flPitch
;
428 //5. Align coordinate system axes
429 aluCrossproduct(ALContext
->Listener
.Forward
, ALContext
->Listener
.Up
, U
); // Right-vector
430 aluNormalize(U
); // Normalized Right-vector
431 memcpy(V
, ALContext
->Listener
.Up
, sizeof(V
)); // Up-vector
432 aluNormalize(V
); // Normalized Up-vector
433 memcpy(N
, ALContext
->Listener
.Forward
, sizeof(N
)); // At-vector
434 aluNormalize(N
); // Normalized At-vector
435 Matrix
[0][0] = U
[0]; Matrix
[0][1] = V
[0]; Matrix
[0][2] = -N
[0];
436 Matrix
[1][0] = U
[1]; Matrix
[1][1] = V
[1]; Matrix
[1][2] = -N
[1];
437 Matrix
[2][0] = U
[2]; Matrix
[2][1] = V
[2]; Matrix
[2][2] = -N
[2];
438 aluMatrixVector(Position
, Matrix
);
440 //6. Apply filter gains and filters
441 switch(ALSource
->DirectFilter
.filter
)
443 case AL_FILTER_LOWPASS
:
444 DryMix
*= ALSource
->DirectFilter
.Gain
;
445 DryGainHF
*= ALSource
->DirectFilter
.GainHF
;
449 switch(ALSource
->Send
[0].WetFilter
.filter
)
451 case AL_FILTER_LOWPASS
:
452 WetMix
*= ALSource
->Send
[0].WetFilter
.Gain
;
453 WetGainHF
*= ALSource
->Send
[0].WetFilter
.GainHF
;
457 if(ALSource
->AirAbsorptionFactor
> 0.0f
)
458 DryGainHF
*= pow(ALSource
->AirAbsorptionFactor
* AIRABSORBGAINHF
,
459 Distance
* MetersPerUnit
);
461 if(ALSource
->Send
[0].Slot
)
463 WetMix
*= ALSource
->Send
[0].Slot
->Gain
;
465 if(ALSource
->Send
[0].Slot
->effect
.type
== AL_EFFECT_REVERB
)
467 WetGainHF
*= ALSource
->Send
[0].Slot
->effect
.Reverb
.GainHF
;
468 WetGainHF
*= pow(ALSource
->Send
[0].Slot
->effect
.Reverb
.AirAbsorptionGainHF
,
469 Distance
* MetersPerUnit
);
478 DryMix
*= ListenerGain
* ConeVolume
;
479 WetMix
*= ListenerGain
;
481 //7. Convert normalized position into pannings, then into channel volumes
482 aluNormalize(Position
);
483 switch(aluChannelsFromFormat(OutputFormat
))
486 drysend
[FRONT_LEFT
] = DryMix
* aluSqrt(1.0f
); //Direct
487 drysend
[FRONT_RIGHT
] = DryMix
* aluSqrt(1.0f
); //Direct
488 wetsend
[FRONT_LEFT
] = WetMix
* aluSqrt(1.0f
); //Room
489 wetsend
[FRONT_RIGHT
] = WetMix
* aluSqrt(1.0f
); //Room
492 PanningLR
= 0.5f
+ 0.5f
*Position
[0];
493 drysend
[FRONT_LEFT
] = DryMix
* aluSqrt(1.0f
-PanningLR
); //L Direct
494 drysend
[FRONT_RIGHT
] = DryMix
* aluSqrt( PanningLR
); //R Direct
495 wetsend
[FRONT_LEFT
] = WetMix
* aluSqrt(1.0f
-PanningLR
); //L Room
496 wetsend
[FRONT_RIGHT
] = WetMix
* aluSqrt( PanningLR
); //R Room
499 /* TODO: Add center/lfe channel in spatial calculations? */
501 // Apply a scalar so each individual speaker has more weight
502 PanningLR
= 0.5f
+ (0.5f
*Position
[0]*1.41421356f
);
503 PanningLR
= __min(1.0f
, PanningLR
);
504 PanningLR
= __max(0.0f
, PanningLR
);
505 PanningFB
= 0.5f
+ (0.5f
*Position
[2]*1.41421356f
);
506 PanningFB
= __min(1.0f
, PanningFB
);
507 PanningFB
= __max(0.0f
, PanningFB
);
508 drysend
[FRONT_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
509 drysend
[FRONT_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
510 drysend
[BACK_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
511 drysend
[BACK_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
512 wetsend
[FRONT_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
513 wetsend
[FRONT_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
514 wetsend
[BACK_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
515 wetsend
[BACK_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
519 PanningFB
= 1.0f
- fabs(Position
[2]*1.15470054f
);
520 PanningFB
= __min(1.0f
, PanningFB
);
521 PanningFB
= __max(0.0f
, PanningFB
);
522 PanningLR
= 0.5f
+ (0.5*Position
[0]*((1.0f
-PanningFB
)*2.0f
));
523 PanningLR
= __min(1.0f
, PanningLR
);
524 PanningLR
= __max(0.0f
, PanningLR
);
525 if(Position
[2] > 0.0f
)
527 drysend
[BACK_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
528 drysend
[BACK_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
529 drysend
[SIDE_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
530 drysend
[SIDE_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
531 drysend
[FRONT_LEFT
] = 0.0f
;
532 drysend
[FRONT_RIGHT
] = 0.0f
;
533 wetsend
[BACK_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
534 wetsend
[BACK_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
535 wetsend
[SIDE_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
536 wetsend
[SIDE_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
537 wetsend
[FRONT_LEFT
] = 0.0f
;
538 wetsend
[FRONT_RIGHT
] = 0.0f
;
542 drysend
[FRONT_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
543 drysend
[FRONT_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
544 drysend
[SIDE_LEFT
] = DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
545 drysend
[SIDE_RIGHT
] = DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
546 drysend
[BACK_LEFT
] = 0.0f
;
547 drysend
[BACK_RIGHT
] = 0.0f
;
548 wetsend
[FRONT_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
549 wetsend
[FRONT_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
550 wetsend
[SIDE_LEFT
] = WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
551 wetsend
[SIDE_RIGHT
] = WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
552 wetsend
[BACK_LEFT
] = 0.0f
;
553 wetsend
[BACK_RIGHT
] = 0.0f
;
559 *drygainhf
= DryGainHF
;
560 *wetgainhf
= WetGainHF
;
564 //1. Multi-channel buffers always play "normal"
565 pitch
[0] = ALSource
->flPitch
;
567 drysend
[FRONT_LEFT
] = SourceVolume
* ListenerGain
;
568 drysend
[FRONT_RIGHT
] = SourceVolume
* ListenerGain
;
569 drysend
[SIDE_LEFT
] = SourceVolume
* ListenerGain
;
570 drysend
[SIDE_RIGHT
] = SourceVolume
* ListenerGain
;
571 drysend
[BACK_LEFT
] = SourceVolume
* ListenerGain
;
572 drysend
[BACK_RIGHT
] = SourceVolume
* ListenerGain
;
573 drysend
[CENTER
] = SourceVolume
* ListenerGain
;
574 drysend
[LFE
] = SourceVolume
* ListenerGain
;
575 wetsend
[FRONT_LEFT
] = 0.0f
;
576 wetsend
[FRONT_RIGHT
] = 0.0f
;
577 wetsend
[SIDE_LEFT
] = 0.0f
;
578 wetsend
[SIDE_RIGHT
] = 0.0f
;
579 wetsend
[BACK_LEFT
] = 0.0f
;
580 wetsend
[BACK_RIGHT
] = 0.0f
;
581 wetsend
[CENTER
] = 0.0f
;
585 *drygainhf
= DryGainHF
;
586 *wetgainhf
= WetGainHF
;
590 ALvoid
aluMixData(ALCcontext
*ALContext
,ALvoid
*buffer
,ALsizei size
,ALenum format
)
592 static float DryBuffer
[BUFFERSIZE
][OUTPUTCHANNELS
];
593 static float WetBuffer
[BUFFERSIZE
][OUTPUTCHANNELS
];
594 static float ReverbBuffer
[BUFFERSIZE
];
595 ALfloat DrySend
[OUTPUTCHANNELS
] = { 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
};
596 ALfloat WetSend
[OUTPUTCHANNELS
] = { 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
};
597 ALfloat DryGainHF
= 0.0f
;
598 ALfloat WetGainHF
= 0.0f
;
599 ALuint BlockAlign
,BufferSize
;
600 ALuint DataSize
=0,DataPosInt
=0,DataPosFrac
=0;
601 ALuint Channels
,Frequency
,ulExtraSamples
;
602 ALfloat DrySample
, WetSample
;
605 ALint Looping
,increment
,State
;
606 ALuint Buffer
,fraction
;
610 ALeffectslot
*ALEffectSlot
;
614 ALbufferlistitem
*BufferListItem
;
616 ALint64 DataSize64
,DataPos64
;
618 SuspendContext(ALContext
);
620 //Figure output format variables
621 BlockAlign
= aluChannelsFromFormat(format
);
622 BlockAlign
*= aluBytesFromFormat(format
);
628 ALEffectSlot
= (ALContext
? ALContext
->AuxiliaryEffectSlot
: NULL
);
629 ALSource
= (ALContext
? ALContext
->Source
: NULL
);
630 SamplesToDo
= min(size
, BUFFERSIZE
);
632 //Clear mixing buffer
633 memset(DryBuffer
, 0, SamplesToDo
*OUTPUTCHANNELS
*sizeof(ALfloat
));
634 memset(WetBuffer
, 0, SamplesToDo
*OUTPUTCHANNELS
*sizeof(ALfloat
));
635 memset(ReverbBuffer
, 0, SamplesToDo
*sizeof(ALfloat
));
641 State
= ALSource
->state
;
643 doReverb
= ((ALSource
->Send
[0].Slot
&&
644 ALSource
->Send
[0].Slot
->effect
.type
== AL_EFFECT_REVERB
) ?
647 while(State
== AL_PLAYING
&& j
< SamplesToDo
)
654 if((Buffer
= ALSource
->ulBufferID
))
656 ALBuffer
= (ALbuffer
*)ALTHUNK_LOOKUPENTRY(Buffer
);
658 Data
= ALBuffer
->data
;
659 Channels
= aluChannelsFromFormat(ALBuffer
->format
);
660 DataSize
= ALBuffer
->size
;
661 Frequency
= ALBuffer
->frequency
;
663 CalcSourceParams(ALContext
, ALSource
,
664 (Channels
==1) ? AL_TRUE
: AL_FALSE
,
665 format
, DrySend
, WetSend
, &Pitch
,
666 &DryGainHF
, &WetGainHF
);
669 Pitch
= (Pitch
*Frequency
) / ALContext
->Frequency
;
670 DataSize
/= Channels
* aluBytesFromFormat(ALBuffer
->format
);
673 DataPosInt
= ALSource
->position
;
674 DataPosFrac
= ALSource
->position_fraction
;
675 DrySample
= ALSource
->LastDrySample
;
676 WetSample
= ALSource
->LastWetSample
;
678 //Compute 18.14 fixed point step
679 increment
= aluF2L(Pitch
*(1L<<FRACTIONBITS
));
680 if(increment
> (MAX_PITCH
<<FRACTIONBITS
))
681 increment
= (MAX_PITCH
<<FRACTIONBITS
);
683 //Figure out how many samples we can mix.
684 //Pitch must be <= 4 (the number below !)
685 DataSize64
= DataSize
+MAX_PITCH
;
686 DataSize64
<<= FRACTIONBITS
;
687 DataPos64
= DataPosInt
;
688 DataPos64
<<= FRACTIONBITS
;
689 DataPos64
+= DataPosFrac
;
690 BufferSize
= (ALuint
)((DataSize64
-DataPos64
) / increment
);
691 BufferListItem
= ALSource
->queue
;
692 for(loop
= 0; loop
< ALSource
->BuffersPlayed
; loop
++)
695 BufferListItem
= BufferListItem
->next
;
699 if (BufferListItem
->next
)
701 ALbuffer
*NextBuf
= (ALbuffer
*)ALTHUNK_LOOKUPENTRY(BufferListItem
->next
->buffer
);
702 if(NextBuf
&& NextBuf
->data
)
704 ulExtraSamples
= min(NextBuf
->size
, (ALint
)(16*Channels
));
705 memcpy(&Data
[DataSize
*Channels
], NextBuf
->data
, ulExtraSamples
);
708 else if (ALSource
->bLooping
)
710 ALbuffer
*NextBuf
= (ALbuffer
*)ALTHUNK_LOOKUPENTRY(ALSource
->queue
->buffer
);
711 if (NextBuf
&& NextBuf
->data
)
713 ulExtraSamples
= min(NextBuf
->size
, (ALint
)(16*Channels
));
714 memcpy(&Data
[DataSize
*Channels
], NextBuf
->data
, ulExtraSamples
);
718 BufferSize
= min(BufferSize
, (SamplesToDo
-j
));
720 //Actual sample mixing loop
721 Data
+= DataPosInt
*Channels
;
724 k
= DataPosFrac
>>FRACTIONBITS
;
725 fraction
= DataPosFrac
&FRACTIONMASK
;
728 //First order interpolator
729 ALfloat sample
= (ALfloat
)((ALshort
)(((Data
[k
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[k
+1]*(fraction
)))>>FRACTIONBITS
));
731 //Direct path final mix buffer and panning
732 DrySample
= aluComputeSample(DryGainHF
, sample
, DrySample
);
733 DryBuffer
[j
][FRONT_LEFT
] += DrySample
*DrySend
[FRONT_LEFT
];
734 DryBuffer
[j
][FRONT_RIGHT
] += DrySample
*DrySend
[FRONT_RIGHT
];
735 DryBuffer
[j
][SIDE_LEFT
] += DrySample
*DrySend
[SIDE_LEFT
];
736 DryBuffer
[j
][SIDE_RIGHT
] += DrySample
*DrySend
[SIDE_RIGHT
];
737 DryBuffer
[j
][BACK_LEFT
] += DrySample
*DrySend
[BACK_LEFT
];
738 DryBuffer
[j
][BACK_RIGHT
] += DrySample
*DrySend
[BACK_RIGHT
];
739 //Room path final mix buffer and panning
740 WetSample
= aluComputeSample(WetGainHF
, sample
, WetSample
);
742 ReverbBuffer
[j
] += WetSample
;
745 WetBuffer
[j
][FRONT_LEFT
] += WetSample
*WetSend
[FRONT_LEFT
];
746 WetBuffer
[j
][FRONT_RIGHT
] += WetSample
*WetSend
[FRONT_RIGHT
];
747 WetBuffer
[j
][SIDE_LEFT
] += WetSample
*WetSend
[SIDE_LEFT
];
748 WetBuffer
[j
][SIDE_RIGHT
] += WetSample
*WetSend
[SIDE_RIGHT
];
749 WetBuffer
[j
][BACK_LEFT
] += WetSample
*WetSend
[BACK_LEFT
];
750 WetBuffer
[j
][BACK_RIGHT
] += WetSample
*WetSend
[BACK_RIGHT
];
755 //First order interpolator (front left)
756 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
]*(fraction
)))>>FRACTIONBITS
));
757 DryBuffer
[j
][FRONT_LEFT
] += value
*DrySend
[FRONT_LEFT
];
758 WetBuffer
[j
][FRONT_LEFT
] += value
*WetSend
[FRONT_LEFT
];
759 //First order interpolator (front right)
760 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+1]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+1]*(fraction
)))>>FRACTIONBITS
));
761 DryBuffer
[j
][FRONT_RIGHT
] += value
*DrySend
[FRONT_RIGHT
];
762 WetBuffer
[j
][FRONT_RIGHT
] += value
*WetSend
[FRONT_RIGHT
];
770 //First order interpolator (center)
771 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
772 DryBuffer
[j
][CENTER
] += value
*DrySend
[CENTER
];
773 WetBuffer
[j
][CENTER
] += value
*WetSend
[CENTER
];
776 //First order interpolator (lfe)
777 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
778 DryBuffer
[j
][LFE
] += value
*DrySend
[LFE
];
779 WetBuffer
[j
][LFE
] += value
*WetSend
[LFE
];
782 //First order interpolator (back left)
783 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
784 DryBuffer
[j
][BACK_LEFT
] += value
*DrySend
[BACK_LEFT
];
785 WetBuffer
[j
][BACK_LEFT
] += value
*WetSend
[BACK_LEFT
];
787 //First order interpolator (back right)
788 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
789 DryBuffer
[j
][BACK_RIGHT
] += value
*DrySend
[BACK_RIGHT
];
790 WetBuffer
[j
][BACK_RIGHT
] += value
*WetSend
[BACK_RIGHT
];
794 //First order interpolator (side left)
795 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
796 DryBuffer
[j
][SIDE_LEFT
] += value
*DrySend
[SIDE_LEFT
];
797 WetBuffer
[j
][SIDE_LEFT
] += value
*WetSend
[SIDE_LEFT
];
799 //First order interpolator (side right)
800 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
801 DryBuffer
[j
][SIDE_RIGHT
] += value
*DrySend
[SIDE_RIGHT
];
802 WetBuffer
[j
][SIDE_RIGHT
] += value
*WetSend
[SIDE_RIGHT
];
807 DataPosFrac
+= increment
;
810 DataPosInt
+= (DataPosFrac
>>FRACTIONBITS
);
811 DataPosFrac
= (DataPosFrac
&FRACTIONMASK
);
814 ALSource
->position
= DataPosInt
;
815 ALSource
->position_fraction
= DataPosFrac
;
816 ALSource
->LastDrySample
= DrySample
;
817 ALSource
->LastWetSample
= WetSample
;
820 //Handle looping sources
821 if(!Buffer
|| DataPosInt
>= DataSize
)
826 Looping
= ALSource
->bLooping
;
827 if(ALSource
->BuffersPlayed
< (ALSource
->BuffersInQueue
-1))
829 BufferListItem
= ALSource
->queue
;
830 for(loop
= 0; loop
<= ALSource
->BuffersPlayed
; loop
++)
835 BufferListItem
->bufferstate
= PROCESSED
;
836 BufferListItem
= BufferListItem
->next
;
840 ALSource
->BuffersProcessed
++;
842 ALSource
->ulBufferID
= BufferListItem
->buffer
;
843 ALSource
->position
= DataPosInt
-DataSize
;
844 ALSource
->position_fraction
= DataPosFrac
;
845 ALSource
->BuffersPlayed
++;
852 ALSource
->state
= AL_STOPPED
;
853 ALSource
->inuse
= AL_FALSE
;
854 ALSource
->BuffersPlayed
= ALSource
->BuffersProcessed
= ALSource
->BuffersInQueue
;
855 BufferListItem
= ALSource
->queue
;
856 while(BufferListItem
!= NULL
)
858 BufferListItem
->bufferstate
= PROCESSED
;
859 BufferListItem
= BufferListItem
->next
;
866 ALSource
->state
= AL_PLAYING
;
867 ALSource
->inuse
= AL_TRUE
;
868 ALSource
->play
= AL_TRUE
;
869 ALSource
->BuffersPlayed
= 0;
870 ALSource
->BufferPosition
= 0;
871 ALSource
->lBytesPlayed
= 0;
872 ALSource
->BuffersProcessed
= 0;
873 BufferListItem
= ALSource
->queue
;
874 while(BufferListItem
!= NULL
)
876 BufferListItem
->bufferstate
= PENDING
;
877 BufferListItem
= BufferListItem
->next
;
879 ALSource
->ulBufferID
= ALSource
->queue
->buffer
;
881 ALSource
->position
= DataPosInt
-DataSize
;
882 ALSource
->position_fraction
= DataPosFrac
;
889 State
= ALSource
->state
;
892 ALSource
= ALSource
->next
;
895 // effect slot processing
898 if(ALEffectSlot
->effect
.type
== AL_EFFECT_REVERB
)
900 ALfloat
*DelayBuffer
= ALEffectSlot
->ReverbBuffer
;
901 ALuint Pos
= ALEffectSlot
->ReverbPos
;
902 ALuint LatePos
= ALEffectSlot
->ReverbLatePos
;
903 ALuint ReflectPos
= ALEffectSlot
->ReverbReflectPos
;
904 ALuint Length
= ALEffectSlot
->ReverbLength
;
905 ALfloat DecayGain
= ALEffectSlot
->ReverbDecayGain
;
906 ALfloat DecayHFRatio
= ALEffectSlot
->effect
.Reverb
.DecayHFRatio
;
907 ALfloat Gain
= ALEffectSlot
->effect
.Reverb
.Gain
;
908 ALfloat ReflectGain
= ALEffectSlot
->effect
.Reverb
.ReflectionsGain
;
909 ALfloat LateReverbGain
= ALEffectSlot
->effect
.Reverb
.LateReverbGain
;
910 ALfloat LastDecaySample
= ALEffectSlot
->LastDecaySample
;
913 for(i
= 0;i
< SamplesToDo
;i
++)
915 DelayBuffer
[Pos
] = ReverbBuffer
[i
] * Gain
;
917 sample
= DelayBuffer
[ReflectPos
] * ReflectGain
;
919 DelayBuffer
[LatePos
] *= LateReverbGain
;
921 Pos
= (Pos
+1) % Length
;
922 DelayBuffer
[Pos
] *= DecayHFRatio
;
923 DelayBuffer
[Pos
] += LastDecaySample
* (1.0f
-DecayHFRatio
);
924 LastDecaySample
= DelayBuffer
[Pos
];
925 DelayBuffer
[Pos
] *= DecayGain
;
927 DelayBuffer
[LatePos
] += DelayBuffer
[Pos
];
929 sample
+= DelayBuffer
[LatePos
];
931 WetBuffer
[i
][FRONT_LEFT
] += sample
;
932 WetBuffer
[i
][FRONT_RIGHT
] += sample
;
933 WetBuffer
[i
][SIDE_LEFT
] += sample
;
934 WetBuffer
[i
][SIDE_RIGHT
] += sample
;
935 WetBuffer
[i
][BACK_LEFT
] += sample
;
936 WetBuffer
[i
][BACK_RIGHT
] += sample
;
938 LatePos
= (LatePos
+1) % Length
;
939 ReflectPos
= (ReflectPos
+1) % Length
;
942 ALEffectSlot
->ReverbPos
= Pos
;
943 ALEffectSlot
->ReverbLatePos
= LatePos
;
944 ALEffectSlot
->ReverbReflectPos
= ReflectPos
;
945 ALEffectSlot
->LastDecaySample
= LastDecaySample
;
948 ALEffectSlot
= ALEffectSlot
->next
;
951 //Post processing loop
954 case AL_FORMAT_MONO8
:
955 for(i
= 0;i
< SamplesToDo
;i
++)
957 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
]+DryBuffer
[i
][FRONT_RIGHT
]+
958 WetBuffer
[i
][FRONT_LEFT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
959 buffer
= ((ALubyte
*)buffer
) + 1;
962 case AL_FORMAT_STEREO8
:
963 if(ALContext
&& ALContext
->bs2b
)
965 for(i
= 0;i
< SamplesToDo
;i
++)
968 samples
[0] = DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
];
969 samples
[1] = DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
];
970 bs2b_cross_feed(ALContext
->bs2b
, samples
);
971 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(samples
[0])>>8)+128);
972 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(samples
[1])>>8)+128);
973 buffer
= ((ALubyte
*)buffer
) + 2;
978 for(i
= 0;i
< SamplesToDo
;i
++)
980 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
981 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
982 buffer
= ((ALubyte
*)buffer
) + 2;
986 case AL_FORMAT_QUAD8
:
987 for(i
= 0;i
< SamplesToDo
;i
++)
989 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
990 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
991 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
992 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
993 buffer
= ((ALubyte
*)buffer
) + 4;
996 case AL_FORMAT_51CHN8
:
997 for(i
= 0;i
< SamplesToDo
;i
++)
999 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
1000 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
1001 #ifdef _WIN32 /* Of course, Windows can't use the same ordering... */
1002 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
])>>8)+128);
1003 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1004 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1005 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1007 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1008 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1009 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
])>>8)+128);
1010 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1012 buffer
= ((ALubyte
*)buffer
) + 6;
1015 case AL_FORMAT_61CHN8
:
1016 for(i
= 0;i
< SamplesToDo
;i
++)
1018 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
1019 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
1021 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1022 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1023 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1025 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1026 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1027 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1029 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
])>>8)+128);
1030 ((ALubyte
*)buffer
)[6] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
])>>8)+128);
1031 buffer
= ((ALubyte
*)buffer
) + 7;
1034 case AL_FORMAT_71CHN8
:
1035 for(i
= 0;i
< SamplesToDo
;i
++)
1037 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
1038 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
1040 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
])>>8)+128);
1041 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1042 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1043 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1045 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1046 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1047 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
])>>8)+128);
1048 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1050 ((ALubyte
*)buffer
)[6] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
])>>8)+128);
1051 ((ALubyte
*)buffer
)[7] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
])>>8)+128);
1052 buffer
= ((ALubyte
*)buffer
) + 8;
1056 case AL_FORMAT_MONO16
:
1057 for(i
= 0;i
< SamplesToDo
;i
++)
1059 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
]+DryBuffer
[i
][FRONT_RIGHT
]+
1060 WetBuffer
[i
][FRONT_LEFT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1061 buffer
= ((ALshort
*)buffer
) + 1;
1064 case AL_FORMAT_STEREO16
:
1065 if(ALContext
&& ALContext
->bs2b
)
1067 for(i
= 0;i
< SamplesToDo
;i
++)
1070 samples
[0] = DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
];
1071 samples
[1] = DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
];
1072 bs2b_cross_feed(ALContext
->bs2b
, samples
);
1073 ((ALshort
*)buffer
)[0] = aluF2S(samples
[0]);
1074 ((ALshort
*)buffer
)[1] = aluF2S(samples
[1]);
1075 buffer
= ((ALshort
*)buffer
) + 2;
1080 for(i
= 0;i
< SamplesToDo
;i
++)
1082 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1083 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1084 buffer
= ((ALshort
*)buffer
) + 2;
1088 case AL_FORMAT_QUAD16
:
1089 for(i
= 0;i
< SamplesToDo
;i
++)
1091 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1092 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1093 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1094 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1095 buffer
= ((ALshort
*)buffer
) + 4;
1098 case AL_FORMAT_51CHN16
:
1099 for(i
= 0;i
< SamplesToDo
;i
++)
1101 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1102 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1104 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
]);
1105 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1106 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1107 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1109 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1110 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1111 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
]);
1112 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1114 buffer
= ((ALshort
*)buffer
) + 6;
1117 case AL_FORMAT_61CHN16
:
1118 for(i
= 0;i
< SamplesToDo
;i
++)
1120 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1121 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1123 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1124 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1125 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1127 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1128 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1129 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1131 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
]);
1132 ((ALshort
*)buffer
)[6] = aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
]);
1133 buffer
= ((ALshort
*)buffer
) + 7;
1136 case AL_FORMAT_71CHN16
:
1137 for(i
= 0;i
< SamplesToDo
;i
++)
1139 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1140 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1142 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
]);
1143 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1144 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1145 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1147 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1148 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1149 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
]);
1150 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1152 ((ALshort
*)buffer
)[6] = aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
]);
1153 ((ALshort
*)buffer
)[7] = aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
]);
1154 buffer
= ((ALshort
*)buffer
) + 8;
1162 size
-= SamplesToDo
;
1165 ProcessContext(ALContext
);