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"
35 #if defined(HAVE_STDINT_H)
37 typedef int64_t ALint64
;
38 #elif defined(HAVE___INT64)
39 typedef __int64 ALint64
;
40 #elif (SIZEOF_LONG == 8)
42 #elif (SIZEOF_LONG_LONG == 8)
43 typedef long long ALint64
;
47 #define aluSqrt(x) ((ALfloat)sqrtf((float)(x)))
49 #define aluSqrt(x) ((ALfloat)sqrt((double)(x)))
53 #if defined(max) && !defined(__max)
56 #if defined(min) && !defined(__min)
60 #define BUFFERSIZE 48000
61 #define FRACTIONBITS 14
62 #define FRACTIONMASK ((1L<<FRACTIONBITS)-1)
78 /* NOTE: The AL_FORMAT_REAR* enums aren't handled here be cause they're
79 * converted to AL_FORMAT_QUAD* when loaded */
80 __inline ALuint
aluBytesFromFormat(ALenum format
)
85 case AL_FORMAT_STEREO8
:
87 case AL_FORMAT_51CHN8
:
88 case AL_FORMAT_61CHN8
:
89 case AL_FORMAT_71CHN8
:
92 case AL_FORMAT_MONO16
:
93 case AL_FORMAT_STEREO16
:
94 case AL_FORMAT_QUAD16
:
95 case AL_FORMAT_51CHN16
:
96 case AL_FORMAT_61CHN16
:
97 case AL_FORMAT_71CHN16
:
100 case AL_FORMAT_MONO_FLOAT32
:
101 case AL_FORMAT_STEREO_FLOAT32
:
102 case AL_FORMAT_QUAD32
:
103 case AL_FORMAT_51CHN32
:
104 case AL_FORMAT_61CHN32
:
105 case AL_FORMAT_71CHN32
:
113 __inline ALuint
aluChannelsFromFormat(ALenum format
)
117 case AL_FORMAT_MONO8
:
118 case AL_FORMAT_MONO16
:
119 case AL_FORMAT_MONO_FLOAT32
:
122 case AL_FORMAT_STEREO8
:
123 case AL_FORMAT_STEREO16
:
124 case AL_FORMAT_STEREO_FLOAT32
:
127 case AL_FORMAT_QUAD8
:
128 case AL_FORMAT_QUAD16
:
129 case AL_FORMAT_QUAD32
:
132 case AL_FORMAT_51CHN8
:
133 case AL_FORMAT_51CHN16
:
134 case AL_FORMAT_51CHN32
:
137 case AL_FORMAT_61CHN8
:
138 case AL_FORMAT_61CHN16
:
139 case AL_FORMAT_61CHN32
:
142 case AL_FORMAT_71CHN8
:
143 case AL_FORMAT_71CHN16
:
144 case AL_FORMAT_71CHN32
:
152 static __inline ALint
aluF2L(ALfloat Value
)
154 if(sizeof(ALint
) == 4 && sizeof(double) == 8)
157 temp
= Value
+ (((65536.0*65536.0*16.0)+(65536.0*65536.0*8.0))*65536.0);
158 return *((ALint
*)&temp
);
163 static __inline ALshort
aluF2S(ALfloat Value
)
168 i
= __min( 32767, i
);
169 i
= __max(-32768, i
);
173 static __inline ALvoid
aluCrossproduct(ALfloat
*inVector1
,ALfloat
*inVector2
,ALfloat
*outVector
)
175 outVector
[0] = inVector1
[1]*inVector2
[2] - inVector1
[2]*inVector2
[1];
176 outVector
[1] = inVector1
[2]*inVector2
[0] - inVector1
[0]*inVector2
[2];
177 outVector
[2] = inVector1
[0]*inVector2
[1] - inVector1
[1]*inVector2
[0];
180 static __inline ALfloat
aluDotproduct(ALfloat
*inVector1
,ALfloat
*inVector2
)
182 return inVector1
[0]*inVector2
[0] + inVector1
[1]*inVector2
[1] +
183 inVector1
[2]*inVector2
[2];
186 static __inline ALvoid
aluNormalize(ALfloat
*inVector
)
188 ALfloat length
, inverse_length
;
190 length
= (ALfloat
)aluSqrt(aluDotproduct(inVector
, inVector
));
193 inverse_length
= 1.0f
/length
;
194 inVector
[0] *= inverse_length
;
195 inVector
[1] *= inverse_length
;
196 inVector
[2] *= inverse_length
;
200 static __inline ALvoid
aluMatrixVector(ALfloat
*vector
,ALfloat matrix
[3][3])
204 result
[0] = vector
[0]*matrix
[0][0] + vector
[1]*matrix
[1][0] + vector
[2]*matrix
[2][0];
205 result
[1] = vector
[0]*matrix
[0][1] + vector
[1]*matrix
[1][1] + vector
[2]*matrix
[2][1];
206 result
[2] = vector
[0]*matrix
[0][2] + vector
[1]*matrix
[1][2] + vector
[2]*matrix
[2][2];
207 memcpy(vector
, result
, sizeof(result
));
210 static __inline ALfloat
aluComputeDrySample(ALsource
*source
, ALfloat DryGainHF
, ALfloat sample
)
215 sample
+= source
->LastDrySample
* (1.0f
- DryGainHF
);
218 source
->LastDrySample
= sample
;
222 static __inline ALfloat
aluComputeWetSample(ALsource
*source
, ALfloat WetGainHF
, ALfloat sample
)
227 sample
+= source
->LastWetSample
* (1.0f
- WetGainHF
);
230 source
->LastWetSample
= sample
;
234 static ALvoid
CalcSourceParams(ALCcontext
*ALContext
, ALsource
*ALSource
,
235 ALenum isMono
, ALenum OutputFormat
,
236 ALfloat
*drysend
, ALfloat
*wetsend
,
237 ALfloat
*pitch
, ALfloat
*drygainhf
,
240 ALfloat ListenerOrientation
[6],ListenerPosition
[3],ListenerVelocity
[3];
241 ALfloat InnerAngle
,OuterAngle
,OuterGain
,Angle
,Distance
,DryMix
,WetMix
;
242 ALfloat Direction
[3],Position
[3],Velocity
[3],SourceToListener
[3];
243 ALfloat MinVolume
,MaxVolume
,MinDist
,MaxDist
,Rolloff
,OuterGainHF
;
244 ALfloat Pitch
,ConeVolume
,SourceVolume
,PanningFB
,PanningLR
,ListenerGain
;
245 ALfloat U
[3],V
[3],N
[3];
246 ALfloat DopplerFactor
, DopplerVelocity
, flSpeedOfSound
, flMaxVelocity
;
247 ALfloat flVSS
, flVLS
;
249 ALfloat Matrix
[3][3];
251 ALfloat flAttenuation
;
252 ALfloat RoomAttenuation
;
253 ALfloat MetersPerUnit
;
255 ALfloat DryGainHF
= 1.0f
;
256 ALfloat WetGainHF
= 1.0f
;
258 //Get context properties
259 DopplerFactor
= ALContext
->DopplerFactor
;
260 DistanceModel
= ALContext
->DistanceModel
;
261 DopplerVelocity
= ALContext
->DopplerVelocity
;
262 flSpeedOfSound
= ALContext
->flSpeedOfSound
;
264 //Get listener properties
265 ListenerGain
= ALContext
->Listener
.Gain
;
266 MetersPerUnit
= ALContext
->Listener
.MetersPerUnit
;
267 memcpy(ListenerPosition
, ALContext
->Listener
.Position
, sizeof(ALContext
->Listener
.Position
));
268 memcpy(ListenerVelocity
, ALContext
->Listener
.Velocity
, sizeof(ALContext
->Listener
.Velocity
));
269 memcpy(&ListenerOrientation
[0], ALContext
->Listener
.Forward
, sizeof(ALContext
->Listener
.Forward
));
270 memcpy(&ListenerOrientation
[3], ALContext
->Listener
.Up
, sizeof(ALContext
->Listener
.Up
));
272 //Get source properties
273 Pitch
= ALSource
->flPitch
;
274 SourceVolume
= ALSource
->flGain
;
275 memcpy(Position
, ALSource
->vPosition
, sizeof(ALSource
->vPosition
));
276 memcpy(Velocity
, ALSource
->vVelocity
, sizeof(ALSource
->vVelocity
));
277 memcpy(Direction
, ALSource
->vOrientation
, sizeof(ALSource
->vOrientation
));
278 MinVolume
= ALSource
->flMinGain
;
279 MaxVolume
= ALSource
->flMaxGain
;
280 MinDist
= ALSource
->flRefDistance
;
281 MaxDist
= ALSource
->flMaxDistance
;
282 Rolloff
= ALSource
->flRollOffFactor
;
283 OuterGain
= ALSource
->flOuterGain
;
284 InnerAngle
= ALSource
->flInnerAngle
;
285 OuterAngle
= ALSource
->flOuterAngle
;
286 HeadRelative
= ALSource
->bHeadRelative
;
287 OuterGainHF
= ALSource
->OuterGainHF
;
288 RoomRolloff
= ALSource
->RoomRolloffFactor
;
290 //Only apply 3D calculations for mono buffers
291 if(isMono
!= AL_FALSE
)
293 //1. Translate Listener to origin (convert to head relative)
294 if(HeadRelative
==AL_FALSE
)
296 Position
[0] -= ListenerPosition
[0];
297 Position
[1] -= ListenerPosition
[1];
298 Position
[2] -= ListenerPosition
[2];
301 //2. Calculate distance attenuation
302 Distance
= aluSqrt(aluDotproduct(Position
, Position
));
304 flAttenuation
= 1.0f
;
305 RoomAttenuation
= 1.0f
;
306 switch (DistanceModel
)
308 case AL_INVERSE_DISTANCE_CLAMPED
:
309 Distance
=__max(Distance
,MinDist
);
310 Distance
=__min(Distance
,MaxDist
);
311 if (MaxDist
< MinDist
)
314 case AL_INVERSE_DISTANCE
:
317 if ((MinDist
+ (Rolloff
* (Distance
- MinDist
))) > 0.0f
)
318 flAttenuation
= MinDist
/ (MinDist
+ (Rolloff
* (Distance
- MinDist
)));
319 if ((MinDist
+ (RoomRolloff
* (Distance
- MinDist
))) > 0.0f
)
320 RoomAttenuation
= MinDist
/ (MinDist
+ (RoomRolloff
* (Distance
- MinDist
)));
324 case AL_LINEAR_DISTANCE_CLAMPED
:
325 Distance
=__max(Distance
,MinDist
);
326 Distance
=__min(Distance
,MaxDist
);
327 if (MaxDist
< MinDist
)
330 case AL_LINEAR_DISTANCE
:
331 Distance
=__min(Distance
,MaxDist
);
332 if (MaxDist
!= MinDist
)
334 flAttenuation
= 1.0f
- (Rolloff
*(Distance
-MinDist
)/(MaxDist
- MinDist
));
335 RoomAttenuation
= 1.0f
- (RoomRolloff
*(Distance
-MinDist
)/(MaxDist
- MinDist
));
339 case AL_EXPONENT_DISTANCE_CLAMPED
:
340 Distance
=__max(Distance
,MinDist
);
341 Distance
=__min(Distance
,MaxDist
);
342 if (MaxDist
< MinDist
)
345 case AL_EXPONENT_DISTANCE
:
346 if ((Distance
> 0.0f
) && (MinDist
> 0.0f
))
348 flAttenuation
= (ALfloat
)pow(Distance
/MinDist
, -Rolloff
);
349 RoomAttenuation
= (ALfloat
)pow(Distance
/MinDist
, -RoomRolloff
);
355 flAttenuation
= 1.0f
;
356 RoomAttenuation
= 1.0f
;
360 // Source Gain + Attenuation
361 DryMix
= SourceVolume
* flAttenuation
;
362 WetMix
= SourceVolume
* ((ALSource
->WetGainAuto
&&
363 ALSource
->Send
[0].Slot
.AuxSendAuto
) ?
364 RoomAttenuation
: 1.0f
);
366 // Clamp to Min/Max Gain
367 DryMix
= __min(DryMix
,MaxVolume
);
368 DryMix
= __max(DryMix
,MinVolume
);
369 WetMix
= __min(WetMix
,MaxVolume
);
370 WetMix
= __max(WetMix
,MinVolume
);
371 //3. Apply directional soundcones
372 SourceToListener
[0] = -Position
[0];
373 SourceToListener
[1] = -Position
[1];
374 SourceToListener
[2] = -Position
[2];
375 aluNormalize(Direction
);
376 aluNormalize(SourceToListener
);
377 Angle
= (ALfloat
)(180.0*acos(aluDotproduct(Direction
,SourceToListener
))/3.141592654f
);
378 if(Angle
>= InnerAngle
&& Angle
<= OuterAngle
)
380 ALfloat scale
= (Angle
-InnerAngle
) / (OuterAngle
-InnerAngle
);
381 ConeVolume
= (1.0f
+(OuterGain
-1.0f
)*scale
);
382 if(ALSource
->WetGainAuto
)
383 WetMix
*= ConeVolume
;
384 if(ALSource
->DryGainHFAuto
)
385 DryGainHF
*= (1.0f
+(OuterGainHF
-1.0f
)*scale
);
386 if(ALSource
->WetGainHFAuto
)
387 WetGainHF
*= (1.0f
+(OuterGainHF
-1.0f
)*scale
);
389 else if(Angle
> OuterAngle
)
391 ConeVolume
= (1.0f
+(OuterGain
-1.0f
));
392 if(ALSource
->WetGainAuto
)
393 WetMix
*= ConeVolume
;
394 if(ALSource
->DryGainHFAuto
)
395 DryGainHF
*= (1.0f
+(OuterGainHF
-1.0f
));
396 if(ALSource
->WetGainHFAuto
)
397 WetGainHF
*= (1.0f
+(OuterGainHF
-1.0f
));
402 //4. Calculate Velocity
403 if(DopplerFactor
!= 0.0f
)
405 flVLS
= aluDotproduct(ListenerVelocity
, SourceToListener
);
406 flVSS
= aluDotproduct(Velocity
, SourceToListener
);
408 flMaxVelocity
= (DopplerVelocity
* flSpeedOfSound
) / DopplerFactor
;
410 if (flVSS
>= flMaxVelocity
)
411 flVSS
= (flMaxVelocity
- 1.0f
);
412 else if (flVSS
<= -flMaxVelocity
)
413 flVSS
= -flMaxVelocity
+ 1.0f
;
415 if (flVLS
>= flMaxVelocity
)
416 flVLS
= (flMaxVelocity
- 1.0f
);
417 else if (flVLS
<= -flMaxVelocity
)
418 flVLS
= -flMaxVelocity
+ 1.0f
;
420 pitch
[0] = Pitch
* ((flSpeedOfSound
* DopplerVelocity
) - (DopplerFactor
* flVLS
)) /
421 ((flSpeedOfSound
* DopplerVelocity
) - (DopplerFactor
* flVSS
));
426 //5. Align coordinate system axes
427 aluCrossproduct(&ListenerOrientation
[0], &ListenerOrientation
[3], U
); // Right-vector
428 aluNormalize(U
); // Normalized Right-vector
429 memcpy(V
, &ListenerOrientation
[3], sizeof(V
)); // Up-vector
430 aluNormalize(V
); // Normalized Up-vector
431 memcpy(N
, &ListenerOrientation
[0], sizeof(N
)); // At-vector
432 aluNormalize(N
); // Normalized At-vector
433 Matrix
[0][0] = U
[0]; Matrix
[0][1] = V
[0]; Matrix
[0][2] = -N
[0];
434 Matrix
[1][0] = U
[1]; Matrix
[1][1] = V
[1]; Matrix
[1][2] = -N
[1];
435 Matrix
[2][0] = U
[2]; Matrix
[2][1] = V
[2]; Matrix
[2][2] = -N
[2];
436 aluMatrixVector(Position
, Matrix
);
438 //6. Apply filter gains and filters
439 switch(ALSource
->DirectFilter
.filter
)
441 case AL_FILTER_LOWPASS
:
442 DryMix
*= ALSource
->DirectFilter
.Gain
;
443 DryGainHF
*= ALSource
->DirectFilter
.GainHF
;
447 switch(ALSource
->Send
[0].WetFilter
.filter
)
449 case AL_FILTER_LOWPASS
:
450 WetMix
*= ALSource
->Send
[0].WetFilter
.Gain
;
451 WetGainHF
*= ALSource
->Send
[0].WetFilter
.GainHF
;
455 if(ALSource
->AirAbsorptionFactor
> 0.0f
)
456 DryGainHF
*= pow(ALSource
->AirAbsorptionFactor
* AIRABSORBGAINHF
,
457 Distance
* MetersPerUnit
);
459 *drygainhf
= DryGainHF
;
460 *wetgainhf
= WetGainHF
;
462 //7. Convert normalized position into pannings, then into channel volumes
463 aluNormalize(Position
);
464 WetMix
*= ALSource
->Send
[0].Slot
.Gain
;
465 switch(aluChannelsFromFormat(OutputFormat
))
468 drysend
[FRONT_LEFT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(1.0f
); //Direct
469 drysend
[FRONT_RIGHT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(1.0f
); //Direct
470 if(ALSource
->Send
[0].Slot
.effectslot
)
472 wetsend
[FRONT_LEFT
] = ListenerGain
* WetMix
* aluSqrt(1.0f
); //Room
473 wetsend
[FRONT_RIGHT
] = ListenerGain
* WetMix
* aluSqrt(1.0f
); //Room
477 wetsend
[FRONT_LEFT
] = 0.0f
;
478 wetsend
[FRONT_RIGHT
] = 0.0f
;
483 PanningLR
= 0.5f
+ 0.5f
*Position
[0];
484 drysend
[FRONT_LEFT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(1.0f
-PanningLR
); //L Direct
485 drysend
[FRONT_RIGHT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt( PanningLR
); //R Direct
486 if(ALSource
->Send
[0].Slot
.effectslot
)
488 wetsend
[FRONT_LEFT
] = ListenerGain
* WetMix
* aluSqrt(1.0f
-PanningLR
); //L Room
489 wetsend
[FRONT_RIGHT
] = ListenerGain
* WetMix
* aluSqrt( PanningLR
); //R Room
493 wetsend
[FRONT_LEFT
] = 0.0f
;
494 wetsend
[FRONT_RIGHT
] = 0.0f
;
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
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
509 drysend
[FRONT_RIGHT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
510 drysend
[BACK_LEFT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
511 drysend
[BACK_RIGHT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
512 if(ALSource
->Send
[0].Slot
.effectslot
)
514 wetsend
[FRONT_LEFT
] = ListenerGain
* WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
515 wetsend
[FRONT_RIGHT
] = ListenerGain
* WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
516 wetsend
[BACK_LEFT
] = ListenerGain
* WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
517 wetsend
[BACK_RIGHT
] = ListenerGain
* WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
521 wetsend
[FRONT_LEFT
] = 0.0f
;
522 wetsend
[FRONT_RIGHT
] = 0.0f
;
523 wetsend
[BACK_LEFT
] = 0.0f
;
524 wetsend
[BACK_RIGHT
] = 0.0f
;
530 PanningFB
= 1.0f
- fabs(Position
[2]*1.15470054f
);
531 PanningFB
= __min(1.0f
, PanningFB
);
532 PanningFB
= __max(0.0f
, PanningFB
);
533 PanningLR
= 0.5f
+ (0.5*Position
[0]*((1.0f
-PanningFB
)*2.0f
));
534 PanningLR
= __min(1.0f
, PanningLR
);
535 PanningLR
= __max(0.0f
, PanningLR
);
536 if(Position
[2] > 0.0f
)
538 drysend
[BACK_LEFT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
539 drysend
[BACK_RIGHT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
540 drysend
[SIDE_LEFT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
541 drysend
[SIDE_RIGHT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
542 drysend
[FRONT_LEFT
] = 0.0f
;
543 drysend
[FRONT_RIGHT
] = 0.0f
;
544 if(ALSource
->Send
[0].Slot
.effectslot
)
546 wetsend
[BACK_LEFT
] = ListenerGain
* WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
547 wetsend
[BACK_RIGHT
] = ListenerGain
* WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
548 wetsend
[SIDE_LEFT
] = ListenerGain
* WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
549 wetsend
[SIDE_RIGHT
] = ListenerGain
* WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
550 wetsend
[FRONT_LEFT
] = 0.0f
;
551 wetsend
[FRONT_RIGHT
] = 0.0f
;
555 wetsend
[FRONT_LEFT
] = 0.0f
;
556 wetsend
[FRONT_RIGHT
] = 0.0f
;
557 wetsend
[SIDE_LEFT
] = 0.0f
;
558 wetsend
[SIDE_RIGHT
] = 0.0f
;
559 wetsend
[BACK_LEFT
] = 0.0f
;
560 wetsend
[BACK_RIGHT
] = 0.0f
;
566 drysend
[FRONT_LEFT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
567 drysend
[FRONT_RIGHT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
568 drysend
[SIDE_LEFT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
569 drysend
[SIDE_RIGHT
] = ConeVolume
* ListenerGain
* DryMix
* aluSqrt(( PanningLR
)*( PanningFB
));
570 drysend
[BACK_LEFT
] = 0.0f
;
571 drysend
[BACK_RIGHT
] = 0.0f
;
572 if(ALSource
->Send
[0].Slot
.effectslot
)
574 wetsend
[FRONT_LEFT
] = ListenerGain
* WetMix
* aluSqrt((1.0f
-PanningLR
)*(1.0f
-PanningFB
));
575 wetsend
[FRONT_RIGHT
] = ListenerGain
* WetMix
* aluSqrt(( PanningLR
)*(1.0f
-PanningFB
));
576 wetsend
[SIDE_LEFT
] = ListenerGain
* WetMix
* aluSqrt((1.0f
-PanningLR
)*( PanningFB
));
577 wetsend
[SIDE_RIGHT
] = ListenerGain
* WetMix
* aluSqrt(( PanningLR
)*( PanningFB
));
578 wetsend
[BACK_LEFT
] = 0.0f
;
579 wetsend
[BACK_RIGHT
] = 0.0f
;
583 wetsend
[FRONT_LEFT
] = 0.0f
;
584 wetsend
[FRONT_RIGHT
] = 0.0f
;
585 wetsend
[SIDE_LEFT
] = 0.0f
;
586 wetsend
[SIDE_RIGHT
] = 0.0f
;
587 wetsend
[BACK_LEFT
] = 0.0f
;
588 wetsend
[BACK_RIGHT
] = 0.0f
;
598 *drygainhf
= DryGainHF
;
599 *wetgainhf
= WetGainHF
;
601 //1. Multi-channel buffers always play "normal"
602 drysend
[FRONT_LEFT
] = SourceVolume
* 1.0f
* ListenerGain
;
603 drysend
[FRONT_RIGHT
] = SourceVolume
* 1.0f
* ListenerGain
;
604 drysend
[SIDE_LEFT
] = SourceVolume
* 1.0f
* ListenerGain
;
605 drysend
[SIDE_RIGHT
] = SourceVolume
* 1.0f
* ListenerGain
;
606 drysend
[BACK_LEFT
] = SourceVolume
* 1.0f
* ListenerGain
;
607 drysend
[BACK_RIGHT
] = SourceVolume
* 1.0f
* ListenerGain
;
608 drysend
[CENTER
] = SourceVolume
* 1.0f
* ListenerGain
;
609 drysend
[LFE
] = SourceVolume
* 1.0f
* ListenerGain
;
610 if(ALSource
->Send
[0].Slot
.effectslot
)
612 wetsend
[FRONT_LEFT
] = SourceVolume
* 0.0f
* ListenerGain
;
613 wetsend
[FRONT_RIGHT
] = SourceVolume
* 0.0f
* ListenerGain
;
614 wetsend
[SIDE_LEFT
] = SourceVolume
* 0.0f
* ListenerGain
;
615 wetsend
[SIDE_RIGHT
] = SourceVolume
* 0.0f
* ListenerGain
;
616 wetsend
[BACK_LEFT
] = SourceVolume
* 0.0f
* ListenerGain
;
617 wetsend
[BACK_RIGHT
] = SourceVolume
* 0.0f
* ListenerGain
;
618 wetsend
[CENTER
] = SourceVolume
* 0.0f
* ListenerGain
;
619 wetsend
[LFE
] = SourceVolume
* 0.0f
* ListenerGain
;
623 wetsend
[FRONT_LEFT
] = 0.0f
;
624 wetsend
[FRONT_RIGHT
] = 0.0f
;
625 wetsend
[SIDE_LEFT
] = 0.0f
;
626 wetsend
[SIDE_RIGHT
] = 0.0f
;
627 wetsend
[BACK_LEFT
] = 0.0f
;
628 wetsend
[BACK_RIGHT
] = 0.0f
;
629 wetsend
[CENTER
] = 0.0f
;
638 ALvoid
aluMixData(ALCcontext
*ALContext
,ALvoid
*buffer
,ALsizei size
,ALenum format
)
640 static float DryBuffer
[BUFFERSIZE
][OUTPUTCHANNELS
];
641 static float WetBuffer
[BUFFERSIZE
][OUTPUTCHANNELS
];
642 ALfloat DrySend
[OUTPUTCHANNELS
] = { 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
};
643 ALfloat WetSend
[OUTPUTCHANNELS
] = { 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
, 0.0f
};
644 ALfloat DryGainHF
= 0.0f
;
645 ALfloat WetGainHF
= 0.0f
;
646 ALuint BlockAlign
,BufferSize
;
647 ALuint DataSize
=0,DataPosInt
=0,DataPosFrac
=0;
648 ALuint Channels
,Bits
,Frequency
,ulExtraSamples
;
650 ALint Looping
,increment
,State
;
651 ALuint Buffer
,fraction
;
658 ALbufferlistitem
*BufferListItem
;
660 ALint64 DataSize64
,DataPos64
;
662 SuspendContext(ALContext
);
666 //Figure output format variables
667 BlockAlign
= aluChannelsFromFormat(format
);
668 BlockAlign
*= aluBytesFromFormat(format
);
674 ALSource
= (ALContext
? ALContext
->Source
: NULL
);
675 SamplesToDo
= min(size
, BUFFERSIZE
);
677 //Clear mixing buffer
678 memset(DryBuffer
, 0, SamplesToDo
*OUTPUTCHANNELS
*sizeof(ALfloat
));
679 memset(WetBuffer
, 0, SamplesToDo
*OUTPUTCHANNELS
*sizeof(ALfloat
));
685 State
= ALSource
->state
;
686 while(State
== AL_PLAYING
&& j
< SamplesToDo
)
693 if((Buffer
= ALSource
->ulBufferID
))
695 ALBuffer
= (ALbuffer
*)ALTHUNK_LOOKUPENTRY(Buffer
);
697 Data
= ALBuffer
->data
;
698 Bits
= aluBytesFromFormat(ALBuffer
->format
) * 8;
699 Channels
= aluChannelsFromFormat(ALBuffer
->format
);
700 DataSize
= ALBuffer
->size
;
701 Frequency
= ALBuffer
->frequency
;
703 CalcSourceParams(ALContext
, ALSource
,
704 (Channels
==1) ? AL_TRUE
: AL_FALSE
,
705 format
, DrySend
, WetSend
, &Pitch
,
706 &DryGainHF
, &WetGainHF
);
709 Pitch
= (Pitch
*Frequency
) / ALContext
->Frequency
;
710 DataSize
= DataSize
/ (Bits
*Channels
/8);
713 DataPosInt
= ALSource
->position
;
714 DataPosFrac
= ALSource
->position_fraction
;
716 //Compute 18.14 fixed point step
717 increment
= aluF2L(Pitch
*(1L<<FRACTIONBITS
));
718 if(increment
> (MAX_PITCH
<<FRACTIONBITS
))
719 increment
= (MAX_PITCH
<<FRACTIONBITS
);
721 //Figure out how many samples we can mix.
722 //Pitch must be <= 4 (the number below !)
723 DataSize64
= DataSize
+MAX_PITCH
;
724 DataSize64
<<= FRACTIONBITS
;
725 DataPos64
= DataPosInt
;
726 DataPos64
<<= FRACTIONBITS
;
727 DataPos64
+= DataPosFrac
;
728 BufferSize
= (ALuint
)((DataSize64
-DataPos64
) / increment
);
729 BufferListItem
= ALSource
->queue
;
730 for(loop
= 0; loop
< ALSource
->BuffersPlayed
; loop
++)
733 BufferListItem
= BufferListItem
->next
;
737 if (BufferListItem
->next
)
739 if(BufferListItem
->next
->buffer
&&
740 ((ALbuffer
*)ALTHUNK_LOOKUPENTRY(BufferListItem
->next
->buffer
))->data
)
742 ulExtraSamples
= min(((ALbuffer
*)ALTHUNK_LOOKUPENTRY(BufferListItem
->next
->buffer
))->size
, (ALint
)(16*Channels
));
743 memcpy(&Data
[DataSize
*Channels
], ((ALbuffer
*)ALTHUNK_LOOKUPENTRY(BufferListItem
->next
->buffer
))->data
, ulExtraSamples
);
746 else if (ALSource
->bLooping
)
748 if (ALSource
->queue
->buffer
)
750 if(((ALbuffer
*)ALTHUNK_LOOKUPENTRY(ALSource
->queue
->buffer
))->data
)
752 ulExtraSamples
= min(((ALbuffer
*)ALTHUNK_LOOKUPENTRY(ALSource
->queue
->buffer
))->size
, (ALint
)(16*Channels
));
753 memcpy(&Data
[DataSize
*Channels
], ((ALbuffer
*)ALTHUNK_LOOKUPENTRY(ALSource
->queue
->buffer
))->data
, ulExtraSamples
);
758 BufferSize
= min(BufferSize
, (SamplesToDo
-j
));
760 //Actual sample mixing loop
761 Data
+= DataPosInt
*Channels
;
764 k
= DataPosFrac
>>FRACTIONBITS
;
765 fraction
= DataPosFrac
&FRACTIONMASK
;
768 //First order interpolator
769 ALfloat sample
= (ALfloat
)((ALshort
)(((Data
[k
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[k
+1]*(fraction
)))>>FRACTIONBITS
));
771 //Direct path final mix buffer and panning
772 value
= aluComputeDrySample(ALSource
, DryGainHF
, sample
);
773 DryBuffer
[j
][FRONT_LEFT
] += value
*DrySend
[FRONT_LEFT
];
774 DryBuffer
[j
][FRONT_RIGHT
] += value
*DrySend
[FRONT_RIGHT
];
775 DryBuffer
[j
][SIDE_LEFT
] += value
*DrySend
[SIDE_LEFT
];
776 DryBuffer
[j
][SIDE_RIGHT
] += value
*DrySend
[SIDE_RIGHT
];
777 DryBuffer
[j
][BACK_LEFT
] += value
*DrySend
[BACK_LEFT
];
778 DryBuffer
[j
][BACK_RIGHT
] += value
*DrySend
[BACK_RIGHT
];
779 //Room path final mix buffer and panning
780 value
= aluComputeWetSample(ALSource
, WetGainHF
, sample
);
781 WetBuffer
[j
][FRONT_LEFT
] += value
*WetSend
[FRONT_LEFT
];
782 WetBuffer
[j
][FRONT_RIGHT
] += value
*WetSend
[FRONT_RIGHT
];
783 WetBuffer
[j
][SIDE_LEFT
] += value
*WetSend
[SIDE_LEFT
];
784 WetBuffer
[j
][SIDE_RIGHT
] += value
*WetSend
[SIDE_RIGHT
];
785 WetBuffer
[j
][BACK_LEFT
] += value
*WetSend
[BACK_LEFT
];
786 WetBuffer
[j
][BACK_RIGHT
] += value
*WetSend
[BACK_RIGHT
];
790 //First order interpolator (front left)
791 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
]*(fraction
)))>>FRACTIONBITS
));
792 DryBuffer
[j
][FRONT_LEFT
] += value
*DrySend
[FRONT_LEFT
];
793 WetBuffer
[j
][FRONT_LEFT
] += value
*WetSend
[FRONT_LEFT
];
794 //First order interpolator (front right)
795 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+1]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+1]*(fraction
)))>>FRACTIONBITS
));
796 DryBuffer
[j
][FRONT_RIGHT
] += value
*DrySend
[FRONT_RIGHT
];
797 WetBuffer
[j
][FRONT_RIGHT
] += value
*WetSend
[FRONT_RIGHT
];
805 //First order interpolator (center)
806 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
807 DryBuffer
[j
][CENTER
] += value
*DrySend
[CENTER
];
808 WetBuffer
[j
][CENTER
] += value
*WetSend
[CENTER
];
811 //First order interpolator (lfe)
812 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
813 DryBuffer
[j
][LFE
] += value
*DrySend
[LFE
];
814 WetBuffer
[j
][LFE
] += value
*WetSend
[LFE
];
817 //First order interpolator (back left)
818 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
819 DryBuffer
[j
][BACK_LEFT
] += value
*DrySend
[BACK_LEFT
];
820 WetBuffer
[j
][BACK_LEFT
] += value
*WetSend
[BACK_LEFT
];
822 //First order interpolator (back right)
823 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
824 DryBuffer
[j
][BACK_RIGHT
] += value
*DrySend
[BACK_RIGHT
];
825 WetBuffer
[j
][BACK_RIGHT
] += value
*WetSend
[BACK_RIGHT
];
829 //First order interpolator (side left)
830 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
831 DryBuffer
[j
][SIDE_LEFT
] += value
*DrySend
[SIDE_LEFT
];
832 WetBuffer
[j
][SIDE_LEFT
] += value
*WetSend
[SIDE_LEFT
];
834 //First order interpolator (side right)
835 value
= (ALfloat
)((ALshort
)(((Data
[k
*Channels
+i
]*((1L<<FRACTIONBITS
)-fraction
))+(Data
[(k
+1)*Channels
+i
]*(fraction
)))>>FRACTIONBITS
));
836 DryBuffer
[j
][SIDE_RIGHT
] += value
*DrySend
[SIDE_RIGHT
];
837 WetBuffer
[j
][SIDE_RIGHT
] += value
*WetSend
[SIDE_RIGHT
];
842 DataPosFrac
+= increment
;
845 DataPosInt
+= (DataPosFrac
>>FRACTIONBITS
);
846 DataPosFrac
= (DataPosFrac
&FRACTIONMASK
);
849 ALSource
->position
= DataPosInt
;
850 ALSource
->position_fraction
= DataPosFrac
;
853 //Handle looping sources
854 if(!Buffer
|| DataPosInt
>= DataSize
)
859 Looping
= ALSource
->bLooping
;
860 if(ALSource
->BuffersPlayed
< (ALSource
->BuffersInQueue
-1))
862 BufferListItem
= ALSource
->queue
;
863 for(loop
= 0; loop
<= ALSource
->BuffersPlayed
; loop
++)
868 BufferListItem
->bufferstate
= PROCESSED
;
869 BufferListItem
= BufferListItem
->next
;
873 ALSource
->BuffersProcessed
++;
875 ALSource
->ulBufferID
= BufferListItem
->buffer
;
876 ALSource
->position
= DataPosInt
-DataSize
;
877 ALSource
->position_fraction
= DataPosFrac
;
878 ALSource
->BuffersPlayed
++;
885 ALSource
->state
= AL_STOPPED
;
886 ALSource
->inuse
= AL_FALSE
;
887 ALSource
->BuffersPlayed
= ALSource
->BuffersProcessed
= ALSource
->BuffersInQueue
;
888 BufferListItem
= ALSource
->queue
;
889 while(BufferListItem
!= NULL
)
891 BufferListItem
->bufferstate
= PROCESSED
;
892 BufferListItem
= BufferListItem
->next
;
899 ALSource
->state
= AL_PLAYING
;
900 ALSource
->inuse
= AL_TRUE
;
901 ALSource
->play
= AL_TRUE
;
902 ALSource
->BuffersPlayed
= 0;
903 ALSource
->BufferPosition
= 0;
904 ALSource
->lBytesPlayed
= 0;
905 ALSource
->BuffersProcessed
= 0;
906 BufferListItem
= ALSource
->queue
;
907 while(BufferListItem
!= NULL
)
909 BufferListItem
->bufferstate
= PENDING
;
910 BufferListItem
= BufferListItem
->next
;
912 ALSource
->ulBufferID
= ALSource
->queue
->buffer
;
914 ALSource
->position
= DataPosInt
-DataSize
;
915 ALSource
->position_fraction
= DataPosFrac
;
922 State
= ALSource
->state
;
925 ALSource
= ALSource
->next
;
928 //Post processing loop
931 case AL_FORMAT_MONO8
:
932 for(i
= 0;i
< SamplesToDo
;i
++)
934 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
]+DryBuffer
[i
][FRONT_RIGHT
]+
935 WetBuffer
[i
][FRONT_LEFT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
936 buffer
= ((ALubyte
*)buffer
) + 1;
939 case AL_FORMAT_STEREO8
:
942 for(i
= 0;i
< SamplesToDo
;i
++)
945 samples
[0] = DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
];
946 samples
[1] = DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
];
947 bs2b_cross_feed(ALContext
->bs2b
, samples
);
948 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(samples
[0])>>8)+128);
949 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(samples
[1])>>8)+128);
950 buffer
= ((ALubyte
*)buffer
) + 2;
955 for(i
= 0;i
< SamplesToDo
;i
++)
957 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
958 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
959 buffer
= ((ALubyte
*)buffer
) + 2;
963 case AL_FORMAT_QUAD8
:
964 for(i
= 0;i
< SamplesToDo
;i
++)
966 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
967 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
968 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
969 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
970 buffer
= ((ALubyte
*)buffer
) + 4;
973 case AL_FORMAT_51CHN8
:
974 for(i
= 0;i
< SamplesToDo
;i
++)
976 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
977 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
978 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
979 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
980 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
])>>8)+128);
981 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
982 buffer
= ((ALubyte
*)buffer
) + 6;
985 case AL_FORMAT_61CHN8
:
986 for(i
= 0;i
< SamplesToDo
;i
++)
988 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
989 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
990 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
])>>8)+128);
991 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
])>>8)+128);
992 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
993 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
994 ((ALubyte
*)buffer
)[6] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
995 buffer
= ((ALubyte
*)buffer
) + 7;
998 case AL_FORMAT_71CHN8
:
999 for(i
= 0;i
< SamplesToDo
;i
++)
1001 ((ALubyte
*)buffer
)[0] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
])>>8)+128);
1002 ((ALubyte
*)buffer
)[1] = (ALubyte
)((aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
])>>8)+128);
1003 ((ALubyte
*)buffer
)[2] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
])>>8)+128);
1004 ((ALubyte
*)buffer
)[3] = (ALubyte
)((aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
])>>8)+128);
1005 ((ALubyte
*)buffer
)[4] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
])>>8)+128);
1006 ((ALubyte
*)buffer
)[5] = (ALubyte
)((aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
])>>8)+128);
1007 ((ALubyte
*)buffer
)[6] = (ALubyte
)((aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
])>>8)+128);
1008 ((ALubyte
*)buffer
)[7] = (ALubyte
)((aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
])>>8)+128);
1009 buffer
= ((ALubyte
*)buffer
) + 8;
1013 case AL_FORMAT_MONO16
:
1014 for(i
= 0;i
< SamplesToDo
;i
++)
1016 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
]+DryBuffer
[i
][FRONT_RIGHT
]+
1017 WetBuffer
[i
][FRONT_LEFT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1018 buffer
= ((ALshort
*)buffer
) + 1;
1021 case AL_FORMAT_STEREO16
:
1024 for(i
= 0;i
< SamplesToDo
;i
++)
1027 samples
[0] = DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
];
1028 samples
[1] = DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
];
1029 bs2b_cross_feed(ALContext
->bs2b
, samples
);
1030 ((ALshort
*)buffer
)[0] = aluF2S(samples
[0]);
1031 ((ALshort
*)buffer
)[1] = aluF2S(samples
[1]);
1032 buffer
= ((ALshort
*)buffer
) + 2;
1037 for(i
= 0;i
< SamplesToDo
;i
++)
1039 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1040 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1041 buffer
= ((ALshort
*)buffer
) + 2;
1045 case AL_FORMAT_QUAD16
:
1046 for(i
= 0;i
< SamplesToDo
;i
++)
1048 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1049 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1050 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1051 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1052 buffer
= ((ALshort
*)buffer
) + 4;
1055 case AL_FORMAT_51CHN16
:
1056 for(i
= 0;i
< SamplesToDo
;i
++)
1058 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1059 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1060 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1061 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1062 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
]);
1063 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1064 buffer
= ((ALshort
*)buffer
) + 6;
1067 case AL_FORMAT_61CHN16
:
1068 for(i
= 0;i
< SamplesToDo
;i
++)
1070 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1071 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1072 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
]);
1073 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
]);
1074 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1075 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1076 ((ALshort
*)buffer
)[6] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1077 buffer
= ((ALshort
*)buffer
) + 7;
1080 case AL_FORMAT_71CHN16
:
1081 for(i
= 0;i
< SamplesToDo
;i
++)
1083 ((ALshort
*)buffer
)[0] = aluF2S(DryBuffer
[i
][FRONT_LEFT
] +WetBuffer
[i
][FRONT_LEFT
]);
1084 ((ALshort
*)buffer
)[1] = aluF2S(DryBuffer
[i
][FRONT_RIGHT
]+WetBuffer
[i
][FRONT_RIGHT
]);
1085 ((ALshort
*)buffer
)[2] = aluF2S(DryBuffer
[i
][SIDE_LEFT
] +WetBuffer
[i
][SIDE_LEFT
]);
1086 ((ALshort
*)buffer
)[3] = aluF2S(DryBuffer
[i
][SIDE_RIGHT
] +WetBuffer
[i
][SIDE_RIGHT
]);
1087 ((ALshort
*)buffer
)[4] = aluF2S(DryBuffer
[i
][BACK_LEFT
] +WetBuffer
[i
][BACK_LEFT
]);
1088 ((ALshort
*)buffer
)[5] = aluF2S(DryBuffer
[i
][BACK_RIGHT
] +WetBuffer
[i
][BACK_RIGHT
]);
1089 ((ALshort
*)buffer
)[6] = aluF2S(DryBuffer
[i
][CENTER
] +WetBuffer
[i
][CENTER
]);
1090 ((ALshort
*)buffer
)[7] = aluF2S(DryBuffer
[i
][LFE
] +WetBuffer
[i
][LFE
]);
1091 buffer
= ((ALshort
*)buffer
) + 8;
1099 size
-= SamplesToDo
;
1103 ProcessContext(ALContext
);