OpenAL32/alEffect.c

   1 /**
   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.
   8  *
   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.
  13  *
  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
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <math.h>
  25
  26 #include "AL/al.h"
  27 #include "AL/alc.h"
  28 #include "alMain.h"
  29 #include "alEffect.h"
  30 #include "alThunk.h"
  31 #include "alError.h"
  32
  33
  34 ALboolean DisabledEffects[MAX_EFFECTS];
  35
  36
  37 static void InitEffectParams(ALeffect *effect, ALenum type);
  38
  39
  40 ALvoid AL_APIENTRY alGenEffects(ALsizei n, ALuint *effects)
  41 {
  42     ALCcontext *Context;
  43     ALsizei i;
  44
  45     Context = GetContextSuspended();
  46     if(!Context) return;
  47
  48     if (n > 0)
  49     {
  50         ALCdevice *device = Context->Device;
  51
  52         // Check that enough memory has been allocted in the 'effects' array for n Effects
  53         if (!IsBadWritePtr((void*)effects, n * sizeof(ALuint)))
  54         {
  55             ALeffect **list = &device->EffectList;
  56             while(*list)
  57                 list = &(*list)->next;
  58
  59             i = 0;
  60             while(i < n)
  61             {
  62                 *list = calloc(1, sizeof(ALeffect));
  63                 if(!(*list))
  64                 {
  65                     // We must have run out or memory
  66                     alDeleteEffects(i, effects);
  67                     alSetError(AL_OUT_OF_MEMORY);
  68                     break;
  69                 }
  70
  71                 effects[i] = (ALuint)ALTHUNK_ADDENTRY(*list);
  72                 (*list)->effect = effects[i];
  73
  74                 InitEffectParams(*list, AL_EFFECT_NULL);
  75                 device->EffectCount++;
  76                 i++;
  77
  78                 list = &(*list)->next;
  79             }
  80         }
  81     }
  82
  83     ProcessContext(Context);
  84 }
  85
  86 ALvoid AL_APIENTRY alDeleteEffects(ALsizei n, ALuint *effects)
  87 {
  88     ALCcontext *Context;
  89     ALeffect *ALEffect;
  90     ALsizei i;
  91
  92     Context = GetContextSuspended();
  93     if(!Context) return;
  94
  95     if (n >= 0)
  96     {
  97         ALCdevice *device = Context->Device;
  98
  99         // Check that all effects are valid
 100         for (i = 0; i < n; i++)
 101         {
 102             if (!alIsEffect(effects[i]))
 103             {
 104                 alSetError(AL_INVALID_NAME);
 105                 break;
 106             }
 107         }
 108
 109         if (i == n)
 110         {
 111             // All effects are valid
 112             for (i = 0; i < n; i++)
 113             {
 114                 // Recheck that the effect is valid, because there could be duplicated names
 115                 if (effects[i] && alIsEffect(effects[i]))
 116                 {
 117                     ALeffect **list;
 118
 119                     ALEffect = ((ALeffect*)ALTHUNK_LOOKUPENTRY(effects[i]));
 120
 121                     // Remove Source from list of Sources
 122                     list = &device->EffectList;
 123                     while(*list && *list != ALEffect)
 124                          list = &(*list)->next;
 125
 126                     if(*list)
 127                         *list = (*list)->next;
 128                     ALTHUNK_REMOVEENTRY(ALEffect->effect);
 129
 130                     memset(ALEffect, 0, sizeof(ALeffect));
 131                     free(ALEffect);
 132
 133                     device->EffectCount--;
 134                 }
 135             }
 136         }
 137     }
 138     else
 139         alSetError(AL_INVALID_VALUE);
 140
 141     ProcessContext(Context);
 142 }
 143
 144 ALboolean AL_APIENTRY alIsEffect(ALuint effect)
 145 {
 146     ALCcontext *Context;
 147     ALeffect *list;
 148
 149     Context = GetContextSuspended();
 150     if(!Context) return AL_FALSE;
 151
 152     list = Context->Device->EffectList;
 153     while(list && list->effect != effect)
 154         list = list->next;
 155
 156     ProcessContext(Context);
 157
 158     return ((list || !effect) ? AL_TRUE : AL_FALSE);
 159 }
 160
 161 ALvoid AL_APIENTRY alEffecti(ALuint effect, ALenum param, ALint iValue)
 162 {
 163     ALCcontext *Context;
 164
 165     Context = GetContextSuspended();
 166     if(!Context) return;
 167
 168     if (effect && alIsEffect(effect))
 169     {
 170         ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
 171
 172         if(param == AL_EFFECT_TYPE)
 173         {
 174             ALboolean isOk = (iValue == AL_EFFECT_NULL ||
 175                 (iValue == AL_EFFECT_EAXREVERB && !DisabledEffects[EAXREVERB]) ||
 176                 (iValue == AL_EFFECT_REVERB && !DisabledEffects[REVERB]) ||
 177                 (iValue == AL_EFFECT_ECHO && !DisabledEffects[ECHO]));
 178
 179             if(isOk)
 180                 InitEffectParams(ALEffect, iValue);
 181             else
 182                 alSetError(AL_INVALID_VALUE);
 183         }
 184         else if(ALEffect->type == AL_EFFECT_EAXREVERB)
 185         {
 186             switch(param)
 187             {
 188             case AL_EAXREVERB_DECAY_HFLIMIT:
 189                 if(iValue >= AL_EAXREVERB_MIN_DECAY_HFLIMIT &&
 190                    iValue <= AL_EAXREVERB_MAX_DECAY_HFLIMIT)
 191                     ALEffect->Reverb.DecayHFLimit = iValue;
 192                 else
 193                     alSetError(AL_INVALID_VALUE);
 194                 break;
 195
 196             default:
 197                 alSetError(AL_INVALID_ENUM);
 198                 break;
 199             }
 200         }
 201         else if(ALEffect->type == AL_EFFECT_REVERB)
 202         {
 203             switch(param)
 204             {
 205             case AL_REVERB_DECAY_HFLIMIT:
 206                 if(iValue >= AL_REVERB_MIN_DECAY_HFLIMIT &&
 207                    iValue <= AL_REVERB_MAX_DECAY_HFLIMIT)
 208                     ALEffect->Reverb.DecayHFLimit = iValue;
 209                 else
 210                     alSetError(AL_INVALID_VALUE);
 211                 break;
 212
 213             default:
 214                 alSetError(AL_INVALID_ENUM);
 215                 break;
 216             }
 217         }
 218         else if(ALEffect->type == AL_EFFECT_ECHO)
 219         {
 220             switch(param)
 221             {
 222             default:
 223                 alSetError(AL_INVALID_ENUM);
 224                 break;
 225             }
 226         }
 227         else
 228             alSetError(AL_INVALID_ENUM);
 229     }
 230     else
 231         alSetError(AL_INVALID_NAME);
 232
 233     ProcessContext(Context);
 234 }
 235
 236 ALvoid AL_APIENTRY alEffectiv(ALuint effect, ALenum param, ALint *piValues)
 237 {
 238     ALCcontext *Context;
 239
 240     Context = GetContextSuspended();
 241     if(!Context) return;
 242
 243     if (effect && alIsEffect(effect))
 244     {
 245         ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
 246
 247         if(param == AL_EFFECT_TYPE)
 248         {
 249             alEffecti(effect, param, piValues[0]);
 250         }
 251         else if(ALEffect->type == AL_EFFECT_EAXREVERB)
 252         {
 253             switch(param)
 254             {
 255             case AL_EAXREVERB_DECAY_HFLIMIT:
 256                 alEffecti(effect, param, piValues[0]);
 257                 break;
 258
 259             default:
 260                 alSetError(AL_INVALID_ENUM);
 261                 break;
 262             }
 263         }
 264         else if(ALEffect->type == AL_EFFECT_REVERB)
 265         {
 266             switch(param)
 267             {
 268             case AL_REVERB_DECAY_HFLIMIT:
 269                 alEffecti(effect, param, piValues[0]);
 270                 break;
 271
 272             default:
 273                 alSetError(AL_INVALID_ENUM);
 274                 break;
 275             }
 276         }
 277         else if(ALEffect->type == AL_EFFECT_ECHO)
 278         {
 279             switch(param)
 280             {
 281             default:
 282                 alSetError(AL_INVALID_ENUM);
 283                 break;
 284             }
 285         }
 286         else
 287             alSetError(AL_INVALID_ENUM);
 288     }
 289     else
 290         alSetError(AL_INVALID_NAME);
 291
 292     ProcessContext(Context);
 293 }
 294
 295 ALvoid AL_APIENTRY alEffectf(ALuint effect, ALenum param, ALfloat flValue)
 296 {
 297     ALCcontext *Context;
 298
 299     Context = GetContextSuspended();
 300     if(!Context) return;
 301
 302     if (effect && alIsEffect(effect))
 303     {
 304         ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
 305
 306         if(ALEffect->type == AL_EFFECT_EAXREVERB)
 307         {
 308             switch(param)
 309             {
 310             case AL_EAXREVERB_DENSITY:
 311                 if(flValue >= AL_EAXREVERB_MIN_DENSITY &&
 312                    flValue <= AL_EAXREVERB_MAX_DENSITY)
 313                     ALEffect->Reverb.Density = flValue;
 314                 else
 315                     alSetError(AL_INVALID_VALUE);
 316                 break;
 317
 318             case AL_EAXREVERB_DIFFUSION:
 319                 if(flValue >= AL_EAXREVERB_MIN_DIFFUSION &&
 320                    flValue <= AL_EAXREVERB_MAX_DIFFUSION)
 321                     ALEffect->Reverb.Diffusion = flValue;
 322                 else
 323                     alSetError(AL_INVALID_VALUE);
 324                 break;
 325
 326             case AL_EAXREVERB_GAIN:
 327                 if(flValue >= AL_EAXREVERB_MIN_GAIN &&
 328                    flValue <= AL_EAXREVERB_MAX_GAIN)
 329                     ALEffect->Reverb.Gain = flValue;
 330                 else
 331                     alSetError(AL_INVALID_VALUE);
 332                 break;
 333
 334             case AL_EAXREVERB_GAINHF:
 335                 if(flValue >= AL_EAXREVERB_MIN_GAINHF &&
 336                    flValue <= AL_EAXREVERB_MAX_GAIN)
 337                     ALEffect->Reverb.GainHF = flValue;
 338                 else
 339                     alSetError(AL_INVALID_VALUE);
 340                 break;
 341
 342             case AL_EAXREVERB_GAINLF:
 343                 if(flValue >= AL_EAXREVERB_MIN_GAINLF &&
 344                    flValue <= AL_EAXREVERB_MAX_GAINLF)
 345                     ALEffect->Reverb.GainLF = flValue;
 346                 else
 347                     alSetError(AL_INVALID_VALUE);
 348                 break;
 349
 350             case AL_EAXREVERB_DECAY_TIME:
 351                 if(flValue >= AL_EAXREVERB_MIN_DECAY_TIME &&
 352                    flValue <= AL_EAXREVERB_MAX_DECAY_TIME)
 353                     ALEffect->Reverb.DecayTime = flValue;
 354                 else
 355                     alSetError(AL_INVALID_VALUE);
 356                 break;
 357
 358             case AL_EAXREVERB_DECAY_HFRATIO:
 359                 if(flValue >= AL_EAXREVERB_MIN_DECAY_HFRATIO &&
 360                    flValue <= AL_EAXREVERB_MAX_DECAY_HFRATIO)
 361                     ALEffect->Reverb.DecayHFRatio = flValue;
 362                 else
 363                     alSetError(AL_INVALID_VALUE);
 364                 break;
 365
 366             case AL_EAXREVERB_DECAY_LFRATIO:
 367                 if(flValue >= AL_EAXREVERB_MIN_DECAY_LFRATIO &&
 368                    flValue <= AL_EAXREVERB_MAX_DECAY_LFRATIO)
 369                     ALEffect->Reverb.DecayLFRatio = flValue;
 370                 else
 371                     alSetError(AL_INVALID_VALUE);
 372                 break;
 373
 374             case AL_EAXREVERB_REFLECTIONS_GAIN:
 375                 if(flValue >= AL_EAXREVERB_MIN_REFLECTIONS_GAIN &&
 376                    flValue <= AL_EAXREVERB_MAX_REFLECTIONS_GAIN)
 377                     ALEffect->Reverb.ReflectionsGain = flValue;
 378                 else
 379                     alSetError(AL_INVALID_VALUE);
 380                 break;
 381
 382             case AL_EAXREVERB_REFLECTIONS_DELAY:
 383                 if(flValue >= AL_EAXREVERB_MIN_REFLECTIONS_DELAY &&
 384                    flValue <= AL_EAXREVERB_MAX_REFLECTIONS_DELAY)
 385                     ALEffect->Reverb.ReflectionsDelay = flValue;
 386                 else
 387                     alSetError(AL_INVALID_VALUE);
 388                 break;
 389
 390             case AL_EAXREVERB_LATE_REVERB_GAIN:
 391                 if(flValue >= AL_EAXREVERB_MIN_LATE_REVERB_GAIN &&
 392                    flValue <= AL_EAXREVERB_MAX_LATE_REVERB_GAIN)
 393                     ALEffect->Reverb.LateReverbGain = flValue;
 394                 else
 395                     alSetError(AL_INVALID_VALUE);
 396                 break;
 397
 398             case AL_EAXREVERB_LATE_REVERB_DELAY:
 399                 if(flValue >= AL_EAXREVERB_MIN_LATE_REVERB_DELAY &&
 400                    flValue <= AL_EAXREVERB_MAX_LATE_REVERB_DELAY)
 401                     ALEffect->Reverb.LateReverbDelay = flValue;
 402                 else
 403                     alSetError(AL_INVALID_VALUE);
 404                 break;
 405
 406             case AL_EAXREVERB_AIR_ABSORPTION_GAINHF:
 407                 if(flValue >= AL_EAXREVERB_MIN_AIR_ABSORPTION_GAINHF &&
 408                    flValue <= AL_EAXREVERB_MAX_AIR_ABSORPTION_GAINHF)
 409                     ALEffect->Reverb.AirAbsorptionGainHF = flValue;
 410                 else
 411                     alSetError(AL_INVALID_VALUE);
 412                 break;
 413
 414             case AL_EAXREVERB_ECHO_TIME:
 415                 if(flValue >= AL_EAXREVERB_MIN_ECHO_TIME &&
 416                    flValue <= AL_EAXREVERB_MAX_ECHO_TIME)
 417                     ALEffect->Reverb.EchoTime = flValue;
 418                 else
 419                     alSetError(AL_INVALID_VALUE);
 420                 break;
 421
 422             case AL_EAXREVERB_ECHO_DEPTH:
 423                 if(flValue >= AL_EAXREVERB_MIN_ECHO_DEPTH &&
 424                    flValue <= AL_EAXREVERB_MAX_ECHO_DEPTH)
 425                     ALEffect->Reverb.EchoDepth = flValue;
 426                 else
 427                     alSetError(AL_INVALID_VALUE);
 428                 break;
 429
 430             case AL_EAXREVERB_MODULATION_TIME:
 431                 if(flValue >= AL_EAXREVERB_MIN_MODULATION_TIME &&
 432                    flValue <= AL_EAXREVERB_MAX_MODULATION_TIME)
 433                     ALEffect->Reverb.ModulationTime = flValue;
 434                 else
 435                     alSetError(AL_INVALID_VALUE);
 436                 break;
 437
 438             case AL_EAXREVERB_MODULATION_DEPTH:
 439                 if(flValue >= AL_EAXREVERB_MIN_MODULATION_DEPTH &&
 440                    flValue <= AL_EAXREVERB_MAX_MODULATION_DEPTH)
 441                     ALEffect->Reverb.ModulationDepth = flValue;
 442                 else
 443                     alSetError(AL_INVALID_VALUE);
 444                 break;
 445
 446             case AL_EAXREVERB_HFREFERENCE:
 447                 if(flValue >= AL_EAXREVERB_MIN_HFREFERENCE &&
 448                    flValue <= AL_EAXREVERB_MAX_HFREFERENCE)
 449                     ALEffect->Reverb.HFReference = flValue;
 450                 else
 451                     alSetError(AL_INVALID_VALUE);
 452                 break;
 453
 454             case AL_EAXREVERB_LFREFERENCE:
 455                 if(flValue >= AL_EAXREVERB_MIN_LFREFERENCE &&
 456                    flValue <= AL_EAXREVERB_MAX_LFREFERENCE)
 457                     ALEffect->Reverb.LFReference = flValue;
 458                 else
 459                     alSetError(AL_INVALID_VALUE);
 460                 break;
 461
 462             case AL_EAXREVERB_ROOM_ROLLOFF_FACTOR:
 463                 if(flValue >= 0.0f && flValue <= 10.0f)
 464                     ALEffect->Reverb.RoomRolloffFactor = flValue;
 465                 else
 466                     alSetError(AL_INVALID_VALUE);
 467                 break;
 468
 469             default:
 470                 alSetError(AL_INVALID_ENUM);
 471                 break;
 472             }
 473         }
 474         else if(ALEffect->type == AL_EFFECT_REVERB)
 475         {
 476             switch(param)
 477             {
 478             case AL_REVERB_DENSITY:
 479                 if(flValue >= AL_REVERB_MIN_DENSITY &&
 480                    flValue <= AL_REVERB_MAX_DENSITY)
 481                     ALEffect->Reverb.Density = flValue;
 482                 else
 483                     alSetError(AL_INVALID_VALUE);
 484                 break;
 485
 486             case AL_REVERB_DIFFUSION:
 487                 if(flValue >= AL_REVERB_MIN_DIFFUSION &&
 488                    flValue <= AL_REVERB_MAX_DIFFUSION)
 489                     ALEffect->Reverb.Diffusion = flValue;
 490                 else
 491                     alSetError(AL_INVALID_VALUE);
 492                 break;
 493
 494             case AL_REVERB_GAIN:
 495                 if(flValue >= AL_REVERB_MIN_GAIN &&
 496                    flValue <= AL_REVERB_MAX_GAIN)
 497                     ALEffect->Reverb.Gain = flValue;
 498                 else
 499                     alSetError(AL_INVALID_VALUE);
 500                 break;
 501
 502             case AL_REVERB_GAINHF:
 503                 if(flValue >= AL_REVERB_MIN_GAINHF &&
 504                    flValue <= AL_REVERB_MAX_GAINHF)
 505                     ALEffect->Reverb.GainHF = flValue;
 506                 else
 507                     alSetError(AL_INVALID_VALUE);
 508                 break;
 509
 510             case AL_REVERB_DECAY_TIME:
 511                 if(flValue >= AL_REVERB_MIN_DECAY_TIME &&
 512                    flValue <= AL_REVERB_MAX_DECAY_TIME)
 513                     ALEffect->Reverb.DecayTime = flValue;
 514                 else
 515                     alSetError(AL_INVALID_VALUE);
 516                 break;
 517
 518             case AL_REVERB_DECAY_HFRATIO:
 519                 if(flValue >= AL_REVERB_MIN_DECAY_HFRATIO &&
 520                    flValue <= AL_REVERB_MAX_DECAY_HFRATIO)
 521                     ALEffect->Reverb.DecayHFRatio = flValue;
 522                 else
 523                     alSetError(AL_INVALID_VALUE);
 524                 break;
 525
 526             case AL_REVERB_REFLECTIONS_GAIN:
 527                 if(flValue >= AL_REVERB_MIN_REFLECTIONS_GAIN &&
 528                    flValue <= AL_REVERB_MAX_REFLECTIONS_GAIN)
 529                     ALEffect->Reverb.ReflectionsGain = flValue;
 530                 else
 531                     alSetError(AL_INVALID_VALUE);
 532                 break;
 533
 534             case AL_REVERB_REFLECTIONS_DELAY:
 535                 if(flValue >= AL_REVERB_MIN_REFLECTIONS_DELAY &&
 536                    flValue <= AL_REVERB_MAX_REFLECTIONS_DELAY)
 537                     ALEffect->Reverb.ReflectionsDelay = flValue;
 538                 else
 539                     alSetError(AL_INVALID_VALUE);
 540                 break;
 541
 542             case AL_REVERB_LATE_REVERB_GAIN:
 543                 if(flValue >= AL_REVERB_MIN_LATE_REVERB_GAIN &&
 544                    flValue <= AL_REVERB_MAX_LATE_REVERB_GAIN)
 545                     ALEffect->Reverb.LateReverbGain = flValue;
 546                 else
 547                     alSetError(AL_INVALID_VALUE);
 548                 break;
 549
 550             case AL_REVERB_LATE_REVERB_DELAY:
 551                 if(flValue >= AL_REVERB_MIN_LATE_REVERB_DELAY &&
 552                    flValue <= AL_REVERB_MAX_LATE_REVERB_DELAY)
 553                     ALEffect->Reverb.LateReverbDelay = flValue;
 554                 else
 555                     alSetError(AL_INVALID_VALUE);
 556                 break;
 557
 558             case AL_REVERB_AIR_ABSORPTION_GAINHF:
 559                 if(flValue >= AL_REVERB_MIN_AIR_ABSORPTION_GAINHF &&
 560                    flValue <= AL_REVERB_MAX_AIR_ABSORPTION_GAINHF)
 561                     ALEffect->Reverb.AirAbsorptionGainHF = flValue;
 562                 else
 563                     alSetError(AL_INVALID_VALUE);
 564                 break;
 565
 566             case AL_REVERB_ROOM_ROLLOFF_FACTOR:
 567                 if(flValue >= AL_REVERB_MIN_ROOM_ROLLOFF_FACTOR &&
 568                    flValue <= AL_REVERB_MAX_ROOM_ROLLOFF_FACTOR)
 569                     ALEffect->Reverb.RoomRolloffFactor = flValue;
 570                 else
 571                     alSetError(AL_INVALID_VALUE);
 572                 break;
 573
 574             default:
 575                 alSetError(AL_INVALID_ENUM);
 576                 break;
 577             }
 578         }
 579         else if(ALEffect->type == AL_EFFECT_ECHO)
 580         {
 581             switch(param)
 582             {
 583             case AL_ECHO_DELAY:
 584                 if(flValue >= AL_ECHO_MIN_DELAY && flValue <= AL_ECHO_MAX_DELAY)
 585                     ALEffect->Echo.Delay = flValue;
 586                 else
 587                     alSetError(AL_INVALID_VALUE);
 588                 break;
 589
 590             case AL_ECHO_LRDELAY:
 591                 if(flValue >= AL_ECHO_MIN_LRDELAY && flValue <= AL_ECHO_MAX_LRDELAY)
 592                     ALEffect->Echo.LRDelay = flValue;
 593                 else
 594                     alSetError(AL_INVALID_VALUE);
 595                 break;
 596
 597             case AL_ECHO_DAMPING:
 598                 if(flValue >= AL_ECHO_MIN_DAMPING && flValue <= AL_ECHO_MAX_DAMPING)
 599                     ALEffect->Echo.Damping = flValue;
 600                 else
 601                     alSetError(AL_INVALID_VALUE);
 602                 break;
 603
 604             case AL_ECHO_FEEDBACK:
 605                 if(flValue >= AL_ECHO_MIN_FEEDBACK && flValue <= AL_ECHO_MAX_FEEDBACK)
 606                     ALEffect->Echo.Feedback = flValue;
 607                 else
 608                     alSetError(AL_INVALID_VALUE);
 609                 break;
 610
 611             case AL_ECHO_SPREAD:
 612                 if(flValue >= AL_ECHO_MIN_SPREAD && flValue <= AL_ECHO_MAX_SPREAD)
 613                     ALEffect->Echo.Spread = flValue;
 614                 else
 615                     alSetError(AL_INVALID_VALUE);
 616                 break;
 617
 618             default:
 619                 alSetError(AL_INVALID_ENUM);
 620                 break;
 621             }
 622         }
 623         else
 624             alSetError(AL_INVALID_ENUM);
 625     }
 626     else
 627         alSetError(AL_INVALID_NAME);
 628
 629     ProcessContext(Context);
 630 }
 631
 632 ALvoid AL_APIENTRY alEffectfv(ALuint effect, ALenum param, ALfloat *pflValues)
 633 {
 634     ALCcontext *Context;
 635
 636     Context = GetContextSuspended();
 637     if(!Context) return;
 638
 639     if (effect && alIsEffect(effect))
 640     {
 641         ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
 642
 643         if(ALEffect->type == AL_EFFECT_EAXREVERB)
 644         {
 645             switch(param)
 646             {
 647             case AL_EAXREVERB_DENSITY:
 648             case AL_EAXREVERB_DIFFUSION:
 649             case AL_EAXREVERB_GAIN:
 650             case AL_EAXREVERB_GAINHF:
 651             case AL_EAXREVERB_GAINLF:
 652             case AL_EAXREVERB_DECAY_TIME:
 653             case AL_EAXREVERB_DECAY_HFRATIO:
 654             case AL_EAXREVERB_DECAY_LFRATIO:
 655             case AL_EAXREVERB_REFLECTIONS_GAIN:
 656             case AL_EAXREVERB_REFLECTIONS_DELAY:
 657             case AL_EAXREVERB_LATE_REVERB_GAIN:
 658             case AL_EAXREVERB_LATE_REVERB_DELAY:
 659             case AL_EAXREVERB_AIR_ABSORPTION_GAINHF:
 660             case AL_EAXREVERB_ECHO_TIME:
 661             case AL_EAXREVERB_ECHO_DEPTH:
 662             case AL_EAXREVERB_MODULATION_TIME:
 663             case AL_EAXREVERB_MODULATION_DEPTH:
 664             case AL_EAXREVERB_HFREFERENCE:
 665             case AL_EAXREVERB_LFREFERENCE:
 666             case AL_EAXREVERB_ROOM_ROLLOFF_FACTOR:
 667                 alEffectf(effect, param, pflValues[0]);
 668                 break;
 669
 670             case AL_EAXREVERB_REFLECTIONS_PAN:
 671                 if(!isnan(pflValues[0]) && !isnan(pflValues[1]) && !isnan(pflValues[2]))
 672                 {
 673                     ALEffect->Reverb.ReflectionsPan[0] = pflValues[0];
 674                     ALEffect->Reverb.ReflectionsPan[1] = pflValues[1];
 675                     ALEffect->Reverb.ReflectionsPan[2] = pflValues[2];
 676                 }
 677                 else
 678                     alSetError(AL_INVALID_VALUE);
 679                 break;
 680             case AL_EAXREVERB_LATE_REVERB_PAN:
 681                 if(!isnan(pflValues[0]) && !isnan(pflValues[1]) && !isnan(pflValues[2]))
 682                 {
 683                     ALEffect->Reverb.LateReverbPan[0] = pflValues[0];
 684                     ALEffect->Reverb.LateReverbPan[1] = pflValues[1];
 685                     ALEffect->Reverb.LateReverbPan[2] = pflValues[2];
 686                 }
 687                 else
 688                     alSetError(AL_INVALID_VALUE);
 689                 break;
 690
 691             default:
 692                 alSetError(AL_INVALID_ENUM);
 693                 break;
 694             }
 695         }
 696         else if(ALEffect->type == AL_EFFECT_REVERB)
 697         {
 698             switch(param)
 699             {
 700             case AL_REVERB_DENSITY:
 701             case AL_REVERB_DIFFUSION:
 702             case AL_REVERB_GAIN:
 703             case AL_REVERB_GAINHF:
 704             case AL_REVERB_DECAY_TIME:
 705             case AL_REVERB_DECAY_HFRATIO:
 706             case AL_REVERB_REFLECTIONS_GAIN:
 707             case AL_REVERB_REFLECTIONS_DELAY:
 708             case AL_REVERB_LATE_REVERB_GAIN:
 709             case AL_REVERB_LATE_REVERB_DELAY:
 710             case AL_REVERB_AIR_ABSORPTION_GAINHF:
 711             case AL_REVERB_ROOM_ROLLOFF_FACTOR:
 712                 alEffectf(effect, param, pflValues[0]);
 713                 break;
 714
 715             default:
 716                 alSetError(AL_INVALID_ENUM);
 717                 break;
 718             }
 719         }
 720         else if(ALEffect->type == AL_EFFECT_ECHO)
 721         {
 722             switch(param)
 723             {
 724             case AL_ECHO_DELAY:
 725             case AL_ECHO_LRDELAY:
 726             case AL_ECHO_DAMPING:
 727             case AL_ECHO_FEEDBACK:
 728             case AL_ECHO_SPREAD:
 729                 alEffectf(effect, param, pflValues[0]);
 730                 break;
 731
 732             default:
 733                 alSetError(AL_INVALID_ENUM);
 734                 break;
 735             }
 736         }
 737         else
 738             alSetError(AL_INVALID_ENUM);
 739     }
 740     else
 741         alSetError(AL_INVALID_NAME);
 742
 743     ProcessContext(Context);
 744 }
 745
 746 ALvoid AL_APIENTRY alGetEffecti(ALuint effect, ALenum param, ALint *piValue)
 747 {
 748     ALCcontext *Context;
 749
 750     Context = GetContextSuspended();
 751     if(!Context) return;
 752
 753     if (effect && alIsEffect(effect))
 754     {
 755         ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
 756
 757         if(param == AL_EFFECT_TYPE)
 758         {
 759             *piValue = ALEffect->type;
 760         }
 761         else if(ALEffect->type == AL_EFFECT_EAXREVERB)
 762         {
 763             switch(param)
 764             {
 765             case AL_EAXREVERB_DECAY_HFLIMIT:
 766                 *piValue = ALEffect->Reverb.DecayHFLimit;
 767                 break;
 768
 769             default:
 770                 alSetError(AL_INVALID_ENUM);
 771                 break;
 772             }
 773         }
 774         else if(ALEffect->type == AL_EFFECT_REVERB)
 775         {
 776             switch(param)
 777             {
 778             case AL_REVERB_DECAY_HFLIMIT:
 779                 *piValue = ALEffect->Reverb.DecayHFLimit;
 780                 break;
 781
 782             default:
 783                 alSetError(AL_INVALID_ENUM);
 784                 break;
 785             }
 786         }
 787         else if(ALEffect->type == AL_EFFECT_ECHO)
 788         {
 789             switch(param)
 790             {
 791             default:
 792                 alSetError(AL_INVALID_ENUM);
 793                 break;
 794             }
 795         }
 796         else
 797             alSetError(AL_INVALID_ENUM);
 798     }
 799     else
 800         alSetError(AL_INVALID_NAME);
 801
 802     ProcessContext(Context);
 803 }
 804
 805 ALvoid AL_APIENTRY alGetEffectiv(ALuint effect, ALenum param, ALint *piValues)
 806 {
 807     ALCcontext *Context;
 808
 809     Context = GetContextSuspended();
 810     if(!Context) return;
 811
 812     if (effect && alIsEffect(effect))
 813     {
 814         ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
 815
 816         if(param == AL_EFFECT_TYPE)
 817         {
 818             alGetEffecti(effect, param, piValues);
 819         }
 820         else if(ALEffect->type == AL_EFFECT_EAXREVERB)
 821         {
 822             switch(param)
 823             {
 824             case AL_EAXREVERB_DECAY_HFLIMIT:
 825                 alGetEffecti(effect, param, piValues);
 826                 break;
 827
 828             default:
 829                 alSetError(AL_INVALID_ENUM);
 830                 break;
 831             }
 832         }
 833         else if(ALEffect->type == AL_EFFECT_REVERB)
 834         {
 835             switch(param)
 836             {
 837             case AL_REVERB_DECAY_HFLIMIT:
 838                 alGetEffecti(effect, param, piValues);
 839                 break;
 840
 841             default:
 842                 alSetError(AL_INVALID_ENUM);
 843                 break;
 844             }
 845         }
 846         else if(ALEffect->type == AL_EFFECT_ECHO)
 847         {
 848             switch(param)
 849             {
 850             default:
 851                 alSetError(AL_INVALID_ENUM);
 852                 break;
 853             }
 854         }
 855         else
 856             alSetError(AL_INVALID_ENUM);
 857     }
 858     else
 859         alSetError(AL_INVALID_NAME);
 860
 861     ProcessContext(Context);
 862 }
 863
 864 ALvoid AL_APIENTRY alGetEffectf(ALuint effect, ALenum param, ALfloat *pflValue)
 865 {
 866     ALCcontext *Context;
 867
 868     Context = GetContextSuspended();
 869     if(!Context) return;
 870
 871     if (effect && alIsEffect(effect))
 872     {
 873         ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
 874
 875         if(ALEffect->type == AL_EFFECT_EAXREVERB)
 876         {
 877             switch(param)
 878             {
 879             case AL_EAXREVERB_DENSITY:
 880                 *pflValue = ALEffect->Reverb.Density;
 881                 break;
 882
 883             case AL_EAXREVERB_DIFFUSION:
 884                 *pflValue = ALEffect->Reverb.Diffusion;
 885                 break;
 886
 887             case AL_EAXREVERB_GAIN:
 888                 *pflValue = ALEffect->Reverb.Gain;
 889                 break;
 890
 891             case AL_EAXREVERB_GAINHF:
 892                 *pflValue = ALEffect->Reverb.GainHF;
 893                 break;
 894
 895             case AL_EAXREVERB_GAINLF:
 896                 *pflValue = ALEffect->Reverb.GainLF;
 897                 break;
 898
 899             case AL_EAXREVERB_DECAY_TIME:
 900                 *pflValue = ALEffect->Reverb.DecayTime;
 901                 break;
 902
 903             case AL_EAXREVERB_DECAY_HFRATIO:
 904                 *pflValue = ALEffect->Reverb.DecayHFRatio;
 905                 break;
 906
 907             case AL_EAXREVERB_DECAY_LFRATIO:
 908                 *pflValue = ALEffect->Reverb.DecayLFRatio;
 909                 break;
 910
 911             case AL_EAXREVERB_REFLECTIONS_GAIN:
 912                 *pflValue = ALEffect->Reverb.ReflectionsGain;
 913                 break;
 914
 915             case AL_EAXREVERB_REFLECTIONS_DELAY:
 916                 *pflValue = ALEffect->Reverb.ReflectionsDelay;
 917                 break;
 918
 919             case AL_EAXREVERB_LATE_REVERB_GAIN:
 920                 *pflValue = ALEffect->Reverb.LateReverbGain;
 921                 break;
 922
 923             case AL_EAXREVERB_LATE_REVERB_DELAY:
 924                 *pflValue = ALEffect->Reverb.LateReverbDelay;
 925                 break;
 926
 927             case AL_EAXREVERB_AIR_ABSORPTION_GAINHF:
 928                 *pflValue = ALEffect->Reverb.AirAbsorptionGainHF;
 929                 break;
 930
 931             case AL_EAXREVERB_ECHO_TIME:
 932                 *pflValue = ALEffect->Reverb.EchoTime;
 933                 break;
 934
 935             case AL_EAXREVERB_ECHO_DEPTH:
 936                 *pflValue = ALEffect->Reverb.EchoDepth;
 937                 break;
 938
 939             case AL_EAXREVERB_MODULATION_TIME:
 940                 *pflValue = ALEffect->Reverb.ModulationTime;
 941                 break;
 942
 943             case AL_EAXREVERB_MODULATION_DEPTH:
 944                 *pflValue = ALEffect->Reverb.ModulationDepth;
 945                 break;
 946
 947             case AL_EAXREVERB_HFREFERENCE:
 948                 *pflValue = ALEffect->Reverb.HFReference;
 949                 break;
 950
 951             case AL_EAXREVERB_LFREFERENCE:
 952                 *pflValue = ALEffect->Reverb.LFReference;
 953                 break;
 954
 955             case AL_EAXREVERB_ROOM_ROLLOFF_FACTOR:
 956                 *pflValue = ALEffect->Reverb.RoomRolloffFactor;
 957                 break;
 958
 959             default:
 960                 alSetError(AL_INVALID_ENUM);
 961                 break;
 962             }
 963         }
 964         else if(ALEffect->type == AL_EFFECT_REVERB)
 965         {
 966             switch(param)
 967             {
 968             case AL_REVERB_DENSITY:
 969                 *pflValue = ALEffect->Reverb.Density;
 970                 break;
 971
 972             case AL_REVERB_DIFFUSION:
 973                 *pflValue = ALEffect->Reverb.Diffusion;
 974                 break;
 975
 976             case AL_REVERB_GAIN:
 977                 *pflValue = ALEffect->Reverb.Gain;
 978                 break;
 979
 980             case AL_REVERB_GAINHF:
 981                 *pflValue = ALEffect->Reverb.GainHF;
 982                 break;
 983
 984             case AL_REVERB_DECAY_TIME:
 985                 *pflValue = ALEffect->Reverb.DecayTime;
 986                 break;
 987
 988             case AL_REVERB_DECAY_HFRATIO:
 989                 *pflValue = ALEffect->Reverb.DecayHFRatio;
 990                 break;
 991
 992             case AL_REVERB_REFLECTIONS_GAIN:
 993                 *pflValue = ALEffect->Reverb.ReflectionsGain;
 994                 break;
 995
 996             case AL_REVERB_REFLECTIONS_DELAY:
 997                 *pflValue = ALEffect->Reverb.ReflectionsDelay;
 998                 break;
 999
1000             case AL_REVERB_LATE_REVERB_GAIN:
1001                 *pflValue = ALEffect->Reverb.LateReverbGain;
1002                 break;
1003
1004             case AL_REVERB_LATE_REVERB_DELAY:
1005                 *pflValue = ALEffect->Reverb.LateReverbDelay;
1006                 break;
1007
1008             case AL_REVERB_AIR_ABSORPTION_GAINHF:
1009                 *pflValue = ALEffect->Reverb.AirAbsorptionGainHF;
1010                 break;
1011
1012             case AL_REVERB_ROOM_ROLLOFF_FACTOR:
1013                 *pflValue = ALEffect->Reverb.RoomRolloffFactor;
1014                 break;
1015
1016             default:
1017                 alSetError(AL_INVALID_ENUM);
1018                 break;
1019             }
1020         }
1021         else if(ALEffect->type == AL_EFFECT_ECHO)
1022         {
1023             switch(param)
1024             {
1025             case AL_ECHO_DELAY:
1026                 *pflValue = ALEffect->Echo.Delay;
1027                 break;
1028
1029             case AL_ECHO_LRDELAY:
1030                 *pflValue = ALEffect->Echo.LRDelay;
1031                 break;
1032
1033             case AL_ECHO_DAMPING:
1034                 *pflValue = ALEffect->Echo.Damping;
1035                 break;
1036
1037             case AL_ECHO_FEEDBACK:
1038                 *pflValue = ALEffect->Echo.Feedback;
1039                 break;
1040
1041             case AL_ECHO_SPREAD:
1042                 *pflValue = ALEffect->Echo.Spread;
1043                 break;
1044
1045             default:
1046                 alSetError(AL_INVALID_ENUM);
1047                 break;
1048             }
1049         }
1050         else
1051             alSetError(AL_INVALID_ENUM);
1052     }
1053     else
1054         alSetError(AL_INVALID_NAME);
1055
1056     ProcessContext(Context);
1057 }
1058
1059 ALvoid AL_APIENTRY alGetEffectfv(ALuint effect, ALenum param, ALfloat *pflValues)
1060 {
1061     ALCcontext *Context;
1062
1063     Context = GetContextSuspended();
1064     if(!Context) return;
1065
1066     if (effect && alIsEffect(effect))
1067     {
1068         ALeffect *ALEffect = (ALeffect*)ALTHUNK_LOOKUPENTRY(effect);
1069
1070         if(ALEffect->type == AL_EFFECT_EAXREVERB)
1071         {
1072             switch(param)
1073             {
1074             case AL_EAXREVERB_DENSITY:
1075             case AL_EAXREVERB_DIFFUSION:
1076             case AL_EAXREVERB_GAIN:
1077             case AL_EAXREVERB_GAINHF:
1078             case AL_EAXREVERB_GAINLF:
1079             case AL_EAXREVERB_DECAY_TIME:
1080             case AL_EAXREVERB_DECAY_HFRATIO:
1081             case AL_EAXREVERB_DECAY_LFRATIO:
1082             case AL_EAXREVERB_REFLECTIONS_GAIN:
1083             case AL_EAXREVERB_REFLECTIONS_DELAY:
1084             case AL_EAXREVERB_LATE_REVERB_GAIN:
1085             case AL_EAXREVERB_LATE_REVERB_DELAY:
1086             case AL_EAXREVERB_AIR_ABSORPTION_GAINHF:
1087             case AL_EAXREVERB_ECHO_TIME:
1088             case AL_EAXREVERB_ECHO_DEPTH:
1089             case AL_EAXREVERB_MODULATION_TIME:
1090             case AL_EAXREVERB_MODULATION_DEPTH:
1091             case AL_EAXREVERB_HFREFERENCE:
1092             case AL_EAXREVERB_LFREFERENCE:
1093             case AL_EAXREVERB_ROOM_ROLLOFF_FACTOR:
1094                 alGetEffectf(effect, param, pflValues);
1095                 break;
1096
1097             case AL_EAXREVERB_REFLECTIONS_PAN:
1098                 pflValues[0] = ALEffect->Reverb.ReflectionsPan[0];
1099                 pflValues[1] = ALEffect->Reverb.ReflectionsPan[1];
1100                 pflValues[2] = ALEffect->Reverb.ReflectionsPan[2];
1101                 break;
1102             case AL_EAXREVERB_LATE_REVERB_PAN:
1103                 pflValues[0] = ALEffect->Reverb.LateReverbPan[0];
1104                 pflValues[1] = ALEffect->Reverb.LateReverbPan[1];
1105                 pflValues[2] = ALEffect->Reverb.LateReverbPan[2];
1106                 break;
1107
1108             default:
1109                 alSetError(AL_INVALID_ENUM);
1110                 break;
1111             }
1112         }
1113         else if(ALEffect->type == AL_EFFECT_REVERB)
1114         {
1115             switch(param)
1116             {
1117             case AL_REVERB_DENSITY:
1118             case AL_REVERB_DIFFUSION:
1119             case AL_REVERB_GAIN:
1120             case AL_REVERB_GAINHF:
1121             case AL_REVERB_DECAY_TIME:
1122             case AL_REVERB_DECAY_HFRATIO:
1123             case AL_REVERB_REFLECTIONS_GAIN:
1124             case AL_REVERB_REFLECTIONS_DELAY:
1125             case AL_REVERB_LATE_REVERB_GAIN:
1126             case AL_REVERB_LATE_REVERB_DELAY:
1127             case AL_REVERB_AIR_ABSORPTION_GAINHF:
1128             case AL_REVERB_ROOM_ROLLOFF_FACTOR:
1129                 alGetEffectf(effect, param, pflValues);
1130                 break;
1131
1132             default:
1133                 alSetError(AL_INVALID_ENUM);
1134                 break;
1135             }
1136         }
1137         else if(ALEffect->type == AL_EFFECT_ECHO)
1138         {
1139             switch(param)
1140             {
1141             case AL_ECHO_DELAY:
1142             case AL_ECHO_LRDELAY:
1143             case AL_ECHO_DAMPING:
1144             case AL_ECHO_FEEDBACK:
1145             case AL_ECHO_SPREAD:
1146                 alGetEffectf(effect, param, pflValues);
1147                 break;
1148
1149             default:
1150                 alSetError(AL_INVALID_ENUM);
1151                 break;
1152             }
1153         }
1154         else
1155             alSetError(AL_INVALID_ENUM);
1156     }
1157     else
1158         alSetError(AL_INVALID_NAME);
1159
1160     ProcessContext(Context);
1161 }
1162
1163
1164 ALvoid ReleaseALEffects(ALCdevice *device)
1165 {
1166     ALeffect *list = device->EffectList;
1167     while(list)
1168     {
1169         ALeffect *temp = list;
1170         list = list->next;
1171
1172         // Release effect structure
1173         memset(temp, 0, sizeof(ALeffect));
1174         free(temp);
1175     }
1176     device->EffectList = NULL;
1177     device->EffectCount = 0;
1178 }
1179
1180
1181 static void InitEffectParams(ALeffect *effect, ALenum type)
1182 {
1183     effect->type = type;
1184     switch(type)
1185     {
1186     /* NOTE: Standard reverb and EAX reverb use the same defaults for the
1187      *       shared parameters, and EAX's additional parameters default to
1188      *       values assumed by standard reverb.
1189      */
1190     case AL_EFFECT_EAXREVERB:
1191     case AL_EFFECT_REVERB:
1192         effect->Reverb.Density = AL_EAXREVERB_DEFAULT_DENSITY;
1193         effect->Reverb.Diffusion = AL_EAXREVERB_DEFAULT_DIFFUSION;
1194         effect->Reverb.Gain = AL_EAXREVERB_DEFAULT_GAIN;
1195         effect->Reverb.GainHF = AL_EAXREVERB_DEFAULT_GAINHF;
1196         effect->Reverb.GainLF = AL_EAXREVERB_DEFAULT_GAINLF;
1197         effect->Reverb.DecayTime = AL_EAXREVERB_DEFAULT_DECAY_TIME;
1198         effect->Reverb.DecayHFRatio = AL_EAXREVERB_DEFAULT_DECAY_HFRATIO;
1199         effect->Reverb.DecayLFRatio = AL_EAXREVERB_DEFAULT_DECAY_LFRATIO;
1200         effect->Reverb.ReflectionsGain = AL_EAXREVERB_DEFAULT_REFLECTIONS_GAIN;
1201         effect->Reverb.ReflectionsDelay = AL_EAXREVERB_DEFAULT_REFLECTIONS_DELAY;
1202         effect->Reverb.ReflectionsPan[0] = AL_EAXREVERB_DEFAULT_REFLECTIONS_PAN_XYZ;
1203         effect->Reverb.ReflectionsPan[1] = AL_EAXREVERB_DEFAULT_REFLECTIONS_PAN_XYZ;
1204         effect->Reverb.ReflectionsPan[2] = AL_EAXREVERB_DEFAULT_REFLECTIONS_PAN_XYZ;
1205         effect->Reverb.LateReverbGain = AL_EAXREVERB_DEFAULT_LATE_REVERB_GAIN;
1206         effect->Reverb.LateReverbDelay = AL_EAXREVERB_DEFAULT_LATE_REVERB_DELAY;
1207         effect->Reverb.LateReverbPan[0] = AL_EAXREVERB_DEFAULT_LATE_REVERB_PAN_XYZ;
1208         effect->Reverb.LateReverbPan[1] = AL_EAXREVERB_DEFAULT_LATE_REVERB_PAN_XYZ;
1209         effect->Reverb.LateReverbPan[2] = AL_EAXREVERB_DEFAULT_LATE_REVERB_PAN_XYZ;
1210         effect->Reverb.EchoTime = AL_EAXREVERB_DEFAULT_ECHO_TIME;
1211         effect->Reverb.EchoDepth = AL_EAXREVERB_DEFAULT_ECHO_DEPTH;
1212         effect->Reverb.ModulationTime = AL_EAXREVERB_DEFAULT_MODULATION_TIME;
1213         effect->Reverb.ModulationDepth = AL_EAXREVERB_DEFAULT_MODULATION_DEPTH;
1214         effect->Reverb.AirAbsorptionGainHF = AL_EAXREVERB_DEFAULT_AIR_ABSORPTION_GAINHF;
1215         effect->Reverb.HFReference = AL_EAXREVERB_DEFAULT_HFREFERENCE;
1216         effect->Reverb.LFReference = AL_EAXREVERB_DEFAULT_LFREFERENCE;
1217         effect->Reverb.RoomRolloffFactor = AL_EAXREVERB_DEFAULT_ROOM_ROLLOFF_FACTOR;
1218         effect->Reverb.DecayHFLimit = AL_EAXREVERB_DEFAULT_DECAY_HFLIMIT;
1219         break;
1220     case AL_EFFECT_ECHO:
1221         effect->Echo.Delay = AL_ECHO_DEFAULT_DELAY;
1222         effect->Echo.LRDelay = AL_ECHO_DEFAULT_LRDELAY;
1223         effect->Echo.Damping = AL_ECHO_DEFAULT_DAMPING;
1224         effect->Echo.Feedback = AL_ECHO_DEFAULT_FEEDBACK;
1225         effect->Echo.Spread = AL_ECHO_DEFAULT_SPREAD;
1226         break;
1227     }
1228 }