al/auxeffectslot.cpp

   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.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "config.h"
  22
  23 #include "auxeffectslot.h"
  24
  25 #include <algorithm>
  26 #include <cassert>
  27 #include <cstdint>
  28 #include <iterator>
  29 #include <memory>
  30 #include <mutex>
  31 #include <numeric>
  32 #include <thread>
  33
  34 #include "AL/al.h"
  35 #include "AL/alc.h"
  36 #include "AL/efx.h"
  37
  38 #include "albit.h"
  39 #include "alc/alu.h"
  40 #include "alc/context.h"
  41 #include "alc/device.h"
  42 #include "alc/inprogext.h"
  43 #include "almalloc.h"
  44 #include "alnumeric.h"
  45 #include "alspan.h"
  46 #include "buffer.h"
  47 #include "core/except.h"
  48 #include "core/fpu_ctrl.h"
  49 #include "core/logging.h"
  50 #include "effect.h"
  51 #include "opthelpers.h"
  52
  53 #ifdef ALSOFT_EAX
  54 #include "eax/exception.h"
  55 #include "eax/utils.h"
  56 #endif // ALSOFT_EAX
  57
  58 namespace {
  59
  60 struct FactoryItem {
  61     EffectSlotType Type;
  62     EffectStateFactory* (&GetFactory)(void);
  63 };
  64 constexpr FactoryItem FactoryList[] = {
  65     { EffectSlotType::None, NullStateFactory_getFactory },
  66     { EffectSlotType::EAXReverb, ReverbStateFactory_getFactory },
  67     { EffectSlotType::Reverb, StdReverbStateFactory_getFactory },
  68     { EffectSlotType::Autowah, AutowahStateFactory_getFactory },
  69     { EffectSlotType::Chorus, ChorusStateFactory_getFactory },
  70     { EffectSlotType::Compressor, CompressorStateFactory_getFactory },
  71     { EffectSlotType::Distortion, DistortionStateFactory_getFactory },
  72     { EffectSlotType::Echo, EchoStateFactory_getFactory },
  73     { EffectSlotType::Equalizer, EqualizerStateFactory_getFactory },
  74     { EffectSlotType::Flanger, FlangerStateFactory_getFactory },
  75     { EffectSlotType::FrequencyShifter, FshifterStateFactory_getFactory },
  76     { EffectSlotType::RingModulator, ModulatorStateFactory_getFactory },
  77     { EffectSlotType::PitchShifter, PshifterStateFactory_getFactory },
  78     { EffectSlotType::VocalMorpher, VmorpherStateFactory_getFactory },
  79     { EffectSlotType::DedicatedDialog, DedicatedStateFactory_getFactory },
  80     { EffectSlotType::DedicatedLFE, DedicatedStateFactory_getFactory },
  81     { EffectSlotType::Convolution, ConvolutionStateFactory_getFactory },
  82 };
  83
  84 EffectStateFactory *getFactoryByType(EffectSlotType type)
  85 {
  86     auto iter = std::find_if(std::begin(FactoryList), std::end(FactoryList),
  87         [type](const FactoryItem &item) noexcept -> bool
  88         { return item.Type == type; });
  89     return (iter != std::end(FactoryList)) ? iter->GetFactory() : nullptr;
  90 }
  91
  92
  93 inline ALeffectslot *LookupEffectSlot(ALCcontext *context, ALuint id) noexcept
  94 {
  95     const size_t lidx{(id-1) >> 6};
  96     const ALuint slidx{(id-1) & 0x3f};
  97
  98     if UNLIKELY(lidx >= context->mEffectSlotList.size())
  99         return nullptr;
 100     EffectSlotSubList &sublist{context->mEffectSlotList[lidx]};
 101     if UNLIKELY(sublist.FreeMask & (1_u64 << slidx))
 102         return nullptr;
 103     return sublist.EffectSlots + slidx;
 104 }
 105
 106 inline ALeffect *LookupEffect(ALCdevice *device, ALuint id) noexcept
 107 {
 108     const size_t lidx{(id-1) >> 6};
 109     const ALuint slidx{(id-1) & 0x3f};
 110
 111     if UNLIKELY(lidx >= device->EffectList.size())
 112         return nullptr;
 113     EffectSubList &sublist = device->EffectList[lidx];
 114     if UNLIKELY(sublist.FreeMask & (1_u64 << slidx))
 115         return nullptr;
 116     return sublist.Effects + slidx;
 117 }
 118
 119 inline ALbuffer *LookupBuffer(ALCdevice *device, ALuint id) noexcept
 120 {
 121     const size_t lidx{(id-1) >> 6};
 122     const ALuint slidx{(id-1) & 0x3f};
 123
 124     if UNLIKELY(lidx >= device->BufferList.size())
 125         return nullptr;
 126     BufferSubList &sublist = device->BufferList[lidx];
 127     if UNLIKELY(sublist.FreeMask & (1_u64 << slidx))
 128         return nullptr;
 129     return sublist.Buffers + slidx;
 130 }
 131
 132
 133 inline auto GetEffectBuffer(ALbuffer *buffer) noexcept -> EffectState::Buffer
 134 {
 135     if(!buffer) return EffectState::Buffer{};
 136     return EffectState::Buffer{buffer, buffer->mData};
 137 }
 138
 139
 140 void AddActiveEffectSlots(const al::span<ALeffectslot*> auxslots, ALCcontext *context)
 141 {
 142     if(auxslots.empty()) return;
 143     EffectSlotArray *curarray{context->mActiveAuxSlots.load(std::memory_order_acquire)};
 144     size_t newcount{curarray->size() + auxslots.size()};
 145
 146     /* Insert the new effect slots into the head of the array, followed by the
 147      * existing ones.
 148      */
 149     EffectSlotArray *newarray = EffectSlot::CreatePtrArray(newcount);
 150     auto slotiter = std::transform(auxslots.begin(), auxslots.end(), newarray->begin(),
 151         [](ALeffectslot *auxslot) noexcept { return &auxslot->mSlot; });
 152     std::copy(curarray->begin(), curarray->end(), slotiter);
 153
 154     /* Remove any duplicates (first instance of each will be kept). */
 155     auto last = newarray->end();
 156     for(auto start=newarray->begin()+1;;)
 157     {
 158         last = std::remove(start, last, *(start-1));
 159         if(start == last) break;
 160         ++start;
 161     }
 162     newcount = static_cast<size_t>(std::distance(newarray->begin(), last));
 163
 164     /* Reallocate newarray if the new size ended up smaller from duplicate
 165      * removal.
 166      */
 167     if UNLIKELY(newcount < newarray->size())
 168     {
 169         curarray = newarray;
 170         newarray = EffectSlot::CreatePtrArray(newcount);
 171         std::copy_n(curarray->begin(), newcount, newarray->begin());
 172         delete curarray;
 173         curarray = nullptr;
 174     }
 175     std::uninitialized_fill_n(newarray->end(), newcount, nullptr);
 176
 177     curarray = context->mActiveAuxSlots.exchange(newarray, std::memory_order_acq_rel);
 178     context->mDevice->waitForMix();
 179
 180     al::destroy_n(curarray->end(), curarray->size());
 181     delete curarray;
 182 }
 183
 184 void RemoveActiveEffectSlots(const al::span<ALeffectslot*> auxslots, ALCcontext *context)
 185 {
 186     if(auxslots.empty()) return;
 187     EffectSlotArray *curarray{context->mActiveAuxSlots.load(std::memory_order_acquire)};
 188
 189     /* Don't shrink the allocated array size since we don't know how many (if
 190      * any) of the effect slots to remove are in the array.
 191      */
 192     EffectSlotArray *newarray = EffectSlot::CreatePtrArray(curarray->size());
 193
 194     auto new_end = std::copy(curarray->begin(), curarray->end(), newarray->begin());
 195     /* Remove elements from newarray that match any ID in slotids. */
 196     for(const ALeffectslot *auxslot : auxslots)
 197     {
 198         auto slot_match = [auxslot](EffectSlot *slot) noexcept -> bool
 199         { return (slot == &auxslot->mSlot); };
 200         new_end = std::remove_if(newarray->begin(), new_end, slot_match);
 201     }
 202
 203     /* Reallocate with the new size. */
 204     auto newsize = static_cast<size_t>(std::distance(newarray->begin(), new_end));
 205     if LIKELY(newsize != newarray->size())
 206     {
 207         curarray = newarray;
 208         newarray = EffectSlot::CreatePtrArray(newsize);
 209         std::copy_n(curarray->begin(), newsize, newarray->begin());
 210
 211         delete curarray;
 212         curarray = nullptr;
 213     }
 214     std::uninitialized_fill_n(newarray->end(), newsize, nullptr);
 215
 216     curarray = context->mActiveAuxSlots.exchange(newarray, std::memory_order_acq_rel);
 217     context->mDevice->waitForMix();
 218
 219     al::destroy_n(curarray->end(), curarray->size());
 220     delete curarray;
 221 }
 222
 223
 224 EffectSlotType EffectSlotTypeFromEnum(ALenum type)
 225 {
 226     switch(type)
 227     {
 228     case AL_EFFECT_NULL: return EffectSlotType::None;
 229     case AL_EFFECT_REVERB: return EffectSlotType::Reverb;
 230     case AL_EFFECT_CHORUS: return EffectSlotType::Chorus;
 231     case AL_EFFECT_DISTORTION: return EffectSlotType::Distortion;
 232     case AL_EFFECT_ECHO: return EffectSlotType::Echo;
 233     case AL_EFFECT_FLANGER: return EffectSlotType::Flanger;
 234     case AL_EFFECT_FREQUENCY_SHIFTER: return EffectSlotType::FrequencyShifter;
 235     case AL_EFFECT_VOCAL_MORPHER: return EffectSlotType::VocalMorpher;
 236     case AL_EFFECT_PITCH_SHIFTER: return EffectSlotType::PitchShifter;
 237     case AL_EFFECT_RING_MODULATOR: return EffectSlotType::RingModulator;
 238     case AL_EFFECT_AUTOWAH: return EffectSlotType::Autowah;
 239     case AL_EFFECT_COMPRESSOR: return EffectSlotType::Compressor;
 240     case AL_EFFECT_EQUALIZER: return EffectSlotType::Equalizer;
 241     case AL_EFFECT_EAXREVERB: return EffectSlotType::EAXReverb;
 242     case AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT: return EffectSlotType::DedicatedLFE;
 243     case AL_EFFECT_DEDICATED_DIALOGUE: return EffectSlotType::DedicatedDialog;
 244     case AL_EFFECT_CONVOLUTION_REVERB_SOFT: return EffectSlotType::Convolution;
 245     }
 246     ERR("Unhandled effect enum: 0x%04x\n", type);
 247     return EffectSlotType::None;
 248 }
 249
 250 bool EnsureEffectSlots(ALCcontext *context, size_t needed)
 251 {
 252     size_t count{std::accumulate(context->mEffectSlotList.cbegin(),
 253         context->mEffectSlotList.cend(), size_t{0},
 254         [](size_t cur, const EffectSlotSubList &sublist) noexcept -> size_t
 255         { return cur + static_cast<ALuint>(al::popcount(sublist.FreeMask)); })};
 256
 257     while(needed > count)
 258     {
 259         if UNLIKELY(context->mEffectSlotList.size() >= 1<<25)
 260             return false;
 261
 262         context->mEffectSlotList.emplace_back();
 263         auto sublist = context->mEffectSlotList.end() - 1;
 264         sublist->FreeMask = ~0_u64;
 265         sublist->EffectSlots = static_cast<ALeffectslot*>(
 266             al_calloc(alignof(ALeffectslot), sizeof(ALeffectslot)*64));
 267         if UNLIKELY(!sublist->EffectSlots)
 268         {
 269             context->mEffectSlotList.pop_back();
 270             return false;
 271         }
 272         count += 64;
 273     }
 274     return true;
 275 }
 276
 277 ALeffectslot *AllocEffectSlot(ALCcontext *context)
 278 {
 279     auto sublist = std::find_if(context->mEffectSlotList.begin(), context->mEffectSlotList.end(),
 280         [](const EffectSlotSubList &entry) noexcept -> bool
 281         { return entry.FreeMask != 0; });
 282     auto lidx = static_cast<ALuint>(std::distance(context->mEffectSlotList.begin(), sublist));
 283     auto slidx = static_cast<ALuint>(al::countr_zero(sublist->FreeMask));
 284     ASSUME(slidx < 64);
 285
 286     ALeffectslot *slot{al::construct_at(sublist->EffectSlots + slidx)};
 287     aluInitEffectPanning(&slot->mSlot, context);
 288
 289     /* Add 1 to avoid source ID 0. */
 290     slot->id = ((lidx<<6) | slidx) + 1;
 291
 292     context->mNumEffectSlots += 1;
 293     sublist->FreeMask &= ~(1_u64 << slidx);
 294
 295     return slot;
 296 }
 297
 298 void FreeEffectSlot(ALCcontext *context, ALeffectslot *slot)
 299 {
 300     const ALuint id{slot->id - 1};
 301     const size_t lidx{id >> 6};
 302     const ALuint slidx{id & 0x3f};
 303
 304     al::destroy_at(slot);
 305
 306     context->mEffectSlotList[lidx].FreeMask |= 1_u64 << slidx;
 307     context->mNumEffectSlots--;
 308 }
 309
 310
 311 inline void UpdateProps(ALeffectslot *slot, ALCcontext *context)
 312 {
 313     if(!context->mDeferUpdates && slot->mState == SlotState::Playing)
 314     {
 315         slot->updateProps(context);
 316         return;
 317     }
 318     slot->mPropsDirty = true;
 319 }
 320
 321 } // namespace
 322
 323
 324 AL_API void AL_APIENTRY alGenAuxiliaryEffectSlots(ALsizei n, ALuint *effectslots)
 325 START_API_FUNC
 326 {
 327     ContextRef context{GetContextRef()};
 328     if UNLIKELY(!context) return;
 329
 330     if UNLIKELY(n < 0)
 331         context->setError(AL_INVALID_VALUE, "Generating %d effect slots", n);
 332     if UNLIKELY(n <= 0) return;
 333
 334     std::unique_lock<std::mutex> slotlock{context->mEffectSlotLock};
 335     ALCdevice *device{context->mALDevice.get()};
 336     if(static_cast<ALuint>(n) > device->AuxiliaryEffectSlotMax-context->mNumEffectSlots)
 337     {
 338         context->setError(AL_OUT_OF_MEMORY, "Exceeding %u effect slot limit (%u + %d)",
 339             device->AuxiliaryEffectSlotMax, context->mNumEffectSlots, n);
 340         return;
 341     }
 342     if(!EnsureEffectSlots(context.get(), static_cast<ALuint>(n)))
 343     {
 344         context->setError(AL_OUT_OF_MEMORY, "Failed to allocate %d effectslot%s", n,
 345             (n==1) ? "" : "s");
 346         return;
 347     }
 348
 349     if(n == 1)
 350     {
 351         ALeffectslot *slot{AllocEffectSlot(context.get())};
 352         if(!slot) return;
 353         effectslots[0] = slot->id;
 354     }
 355     else
 356     {
 357         al::vector<ALuint> ids;
 358         ALsizei count{n};
 359         ids.reserve(static_cast<ALuint>(count));
 360         do {
 361             ALeffectslot *slot{AllocEffectSlot(context.get())};
 362             if(!slot)
 363             {
 364                 slotlock.unlock();
 365                 alDeleteAuxiliaryEffectSlots(static_cast<ALsizei>(ids.size()), ids.data());
 366                 return;
 367             }
 368             ids.emplace_back(slot->id);
 369         } while(--count);
 370         std::copy(ids.cbegin(), ids.cend(), effectslots);
 371     }
 372 }
 373 END_API_FUNC
 374
 375 AL_API void AL_APIENTRY alDeleteAuxiliaryEffectSlots(ALsizei n, const ALuint *effectslots)
 376 START_API_FUNC
 377 {
 378     ContextRef context{GetContextRef()};
 379     if UNLIKELY(!context) return;
 380
 381     if UNLIKELY(n < 0)
 382         context->setError(AL_INVALID_VALUE, "Deleting %d effect slots", n);
 383     if UNLIKELY(n <= 0) return;
 384
 385     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 386     if(n == 1)
 387     {
 388         ALeffectslot *slot{LookupEffectSlot(context.get(), effectslots[0])};
 389         if UNLIKELY(!slot)
 390         {
 391             context->setError(AL_INVALID_NAME, "Invalid effect slot ID %u", effectslots[0]);
 392             return;
 393         }
 394         if UNLIKELY(ReadRef(slot->ref) != 0)
 395         {
 396             context->setError(AL_INVALID_OPERATION, "Deleting in-use effect slot %u",
 397                 effectslots[0]);
 398             return;
 399         }
 400         RemoveActiveEffectSlots({&slot, 1u}, context.get());
 401         FreeEffectSlot(context.get(), slot);
 402     }
 403     else
 404     {
 405         auto slots = al::vector<ALeffectslot*>(static_cast<ALuint>(n));
 406         for(size_t i{0};i < slots.size();++i)
 407         {
 408             ALeffectslot *slot{LookupEffectSlot(context.get(), effectslots[i])};
 409             if UNLIKELY(!slot)
 410             {
 411                 context->setError(AL_INVALID_NAME, "Invalid effect slot ID %u", effectslots[i]);
 412                 return;
 413             }
 414             if UNLIKELY(ReadRef(slot->ref) != 0)
 415             {
 416                 context->setError(AL_INVALID_OPERATION, "Deleting in-use effect slot %u",
 417                     effectslots[i]);
 418                 return;
 419             }
 420             slots[i] = slot;
 421         }
 422         /* Remove any duplicates. */
 423         auto slots_end = slots.end();
 424         for(auto start=slots.begin()+1;start != slots_end;++start)
 425         {
 426             slots_end = std::remove(start, slots_end, *(start-1));
 427             if(start == slots_end) break;
 428         }
 429         slots.erase(slots_end, slots.end());
 430
 431         /* All effectslots are valid, remove and delete them */
 432         RemoveActiveEffectSlots(slots, context.get());
 433         for(ALeffectslot *slot : slots)
 434             FreeEffectSlot(context.get(), slot);
 435     }
 436 }
 437 END_API_FUNC
 438
 439 AL_API ALboolean AL_APIENTRY alIsAuxiliaryEffectSlot(ALuint effectslot)
 440 START_API_FUNC
 441 {
 442     ContextRef context{GetContextRef()};
 443     if LIKELY(context)
 444     {
 445         std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 446         if(LookupEffectSlot(context.get(), effectslot) != nullptr)
 447             return AL_TRUE;
 448     }
 449     return AL_FALSE;
 450 }
 451 END_API_FUNC
 452
 453
 454 AL_API void AL_APIENTRY alAuxiliaryEffectSlotPlaySOFT(ALuint slotid)
 455 START_API_FUNC
 456 {
 457     ContextRef context{GetContextRef()};
 458     if UNLIKELY(!context) return;
 459
 460     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 461     ALeffectslot *slot{LookupEffectSlot(context.get(), slotid)};
 462     if UNLIKELY(!slot)
 463     {
 464         context->setError(AL_INVALID_NAME, "Invalid effect slot ID %u", slotid);
 465         return;
 466     }
 467     if(slot->mState == SlotState::Playing)
 468         return;
 469
 470     slot->mPropsDirty = false;
 471     slot->updateProps(context.get());
 472
 473     AddActiveEffectSlots({&slot, 1}, context.get());
 474     slot->mState = SlotState::Playing;
 475 }
 476 END_API_FUNC
 477
 478 AL_API void AL_APIENTRY alAuxiliaryEffectSlotPlayvSOFT(ALsizei n, const ALuint *slotids)
 479 START_API_FUNC
 480 {
 481     ContextRef context{GetContextRef()};
 482     if UNLIKELY(!context) return;
 483
 484     if UNLIKELY(n < 0)
 485         context->setError(AL_INVALID_VALUE, "Playing %d effect slots", n);
 486     if UNLIKELY(n <= 0) return;
 487
 488     auto slots = al::vector<ALeffectslot*>(static_cast<ALuint>(n));
 489     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 490     for(size_t i{0};i < slots.size();++i)
 491     {
 492         ALeffectslot *slot{LookupEffectSlot(context.get(), slotids[i])};
 493         if UNLIKELY(!slot)
 494         {
 495             context->setError(AL_INVALID_NAME, "Invalid effect slot ID %u", slotids[i]);
 496             return;
 497         }
 498
 499         if(slot->mState != SlotState::Playing)
 500         {
 501             slot->mPropsDirty = false;
 502             slot->updateProps(context.get());
 503         }
 504         slots[i] = slot;
 505     };
 506
 507     AddActiveEffectSlots(slots, context.get());
 508     for(auto slot : slots)
 509         slot->mState = SlotState::Playing;
 510 }
 511 END_API_FUNC
 512
 513 AL_API void AL_APIENTRY alAuxiliaryEffectSlotStopSOFT(ALuint slotid)
 514 START_API_FUNC
 515 {
 516     ContextRef context{GetContextRef()};
 517     if UNLIKELY(!context) return;
 518
 519     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 520     ALeffectslot *slot{LookupEffectSlot(context.get(), slotid)};
 521     if UNLIKELY(!slot)
 522     {
 523         context->setError(AL_INVALID_NAME, "Invalid effect slot ID %u", slotid);
 524         return;
 525     }
 526
 527     RemoveActiveEffectSlots({&slot, 1}, context.get());
 528     slot->mState = SlotState::Stopped;
 529 }
 530 END_API_FUNC
 531
 532 AL_API void AL_APIENTRY alAuxiliaryEffectSlotStopvSOFT(ALsizei n, const ALuint *slotids)
 533 START_API_FUNC
 534 {
 535     ContextRef context{GetContextRef()};
 536     if UNLIKELY(!context) return;
 537
 538     if UNLIKELY(n < 0)
 539         context->setError(AL_INVALID_VALUE, "Stopping %d effect slots", n);
 540     if UNLIKELY(n <= 0) return;
 541
 542     auto slots = al::vector<ALeffectslot*>(static_cast<ALuint>(n));
 543     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 544     for(size_t i{0};i < slots.size();++i)
 545     {
 546         ALeffectslot *slot{LookupEffectSlot(context.get(), slotids[i])};
 547         if UNLIKELY(!slot)
 548         {
 549             context->setError(AL_INVALID_NAME, "Invalid effect slot ID %u", slotids[i]);
 550             return;
 551         }
 552
 553         slots[i] = slot;
 554     };
 555
 556     RemoveActiveEffectSlots(slots, context.get());
 557     for(auto slot : slots)
 558         slot->mState = SlotState::Stopped;
 559 }
 560 END_API_FUNC
 561
 562
 563 AL_API void AL_APIENTRY alAuxiliaryEffectSloti(ALuint effectslot, ALenum param, ALint value)
 564 START_API_FUNC
 565 {
 566     ContextRef context{GetContextRef()};
 567     if UNLIKELY(!context) return;
 568
 569     std::lock_guard<std::mutex> _{context->mPropLock};
 570     std::lock_guard<std::mutex> __{context->mEffectSlotLock};
 571     ALeffectslot *slot = LookupEffectSlot(context.get(), effectslot);
 572     if UNLIKELY(!slot)
 573         SETERR_RETURN(context, AL_INVALID_NAME,, "Invalid effect slot ID %u", effectslot);
 574
 575     ALeffectslot *target{};
 576     ALCdevice *device{};
 577     ALenum err{};
 578     switch(param)
 579     {
 580     case AL_EFFECTSLOT_EFFECT:
 581         device = context->mALDevice.get();
 582
 583         {
 584             std::lock_guard<std::mutex> ___{device->EffectLock};
 585             ALeffect *effect{value ? LookupEffect(device, static_cast<ALuint>(value)) : nullptr};
 586             if(effect)
 587                 err = slot->initEffect(effect->type, effect->Props, context.get());
 588             else
 589             {
 590                 if(value != 0)
 591                     SETERR_RETURN(context, AL_INVALID_VALUE,, "Invalid effect ID %u", value);
 592                 err = slot->initEffect(AL_EFFECT_NULL, EffectProps{}, context.get());
 593             }
 594         }
 595         if UNLIKELY(err != AL_NO_ERROR)
 596         {
 597             context->setError(err, "Effect initialization failed");
 598             return;
 599         }
 600         if UNLIKELY(slot->mState == SlotState::Initial)
 601         {
 602             slot->mPropsDirty = false;
 603             slot->updateProps(context.get());
 604
 605             AddActiveEffectSlots({&slot, 1}, context.get());
 606             slot->mState = SlotState::Playing;
 607             return;
 608         }
 609         break;
 610
 611     case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
 612         if(!(value == AL_TRUE || value == AL_FALSE))
 613             SETERR_RETURN(context, AL_INVALID_VALUE,,
 614                 "Effect slot auxiliary send auto out of range");
 615         if UNLIKELY(slot->AuxSendAuto == !!value)
 616             return;
 617         slot->AuxSendAuto = !!value;
 618         break;
 619
 620     case AL_EFFECTSLOT_TARGET_SOFT:
 621         target = LookupEffectSlot(context.get(), static_cast<ALuint>(value));
 622         if(value && !target)
 623             SETERR_RETURN(context, AL_INVALID_VALUE,, "Invalid effect slot target ID");
 624         if UNLIKELY(slot->Target == target)
 625             return;
 626         if(target)
 627         {
 628             ALeffectslot *checker{target};
 629             while(checker && checker != slot)
 630                 checker = checker->Target;
 631             if(checker)
 632                 SETERR_RETURN(context, AL_INVALID_OPERATION,,
 633                     "Setting target of effect slot ID %u to %u creates circular chain", slot->id,
 634                     target->id);
 635         }
 636
 637         if(ALeffectslot *oldtarget{slot->Target})
 638         {
 639             /* We must force an update if there was an existing effect slot
 640              * target, in case it's about to be deleted.
 641              */
 642             if(target) IncrementRef(target->ref);
 643             DecrementRef(oldtarget->ref);
 644             slot->Target = target;
 645             slot->updateProps(context.get());
 646             return;
 647         }
 648
 649         if(target) IncrementRef(target->ref);
 650         slot->Target = target;
 651         break;
 652
 653     case AL_BUFFER:
 654         device = context->mALDevice.get();
 655
 656         if(slot->mState == SlotState::Playing)
 657             SETERR_RETURN(context, AL_INVALID_OPERATION,,
 658                 "Setting buffer on playing effect slot %u", slot->id);
 659
 660         if(ALbuffer *buffer{slot->Buffer})
 661         {
 662             if UNLIKELY(buffer->id == static_cast<ALuint>(value))
 663                 return;
 664         }
 665         else if UNLIKELY(value == 0)
 666             return;
 667
 668         {
 669             std::lock_guard<std::mutex> ___{device->BufferLock};
 670             ALbuffer *buffer{};
 671             if(value)
 672             {
 673                 buffer = LookupBuffer(device, static_cast<ALuint>(value));
 674                 if(!buffer) SETERR_RETURN(context, AL_INVALID_VALUE,, "Invalid buffer ID");
 675                 if(buffer->mCallback)
 676                     SETERR_RETURN(context, AL_INVALID_OPERATION,,
 677                         "Callback buffer not valid for effects");
 678
 679                 IncrementRef(buffer->ref);
 680             }
 681
 682             if(ALbuffer *oldbuffer{slot->Buffer})
 683                 DecrementRef(oldbuffer->ref);
 684             slot->Buffer = buffer;
 685
 686             FPUCtl mixer_mode{};
 687             auto *state = slot->Effect.State.get();
 688             state->deviceUpdate(device, GetEffectBuffer(buffer));
 689         }
 690         break;
 691
 692     case AL_EFFECTSLOT_STATE_SOFT:
 693         SETERR_RETURN(context, AL_INVALID_OPERATION,, "AL_EFFECTSLOT_STATE_SOFT is read-only");
 694
 695     default:
 696         SETERR_RETURN(context, AL_INVALID_ENUM,, "Invalid effect slot integer property 0x%04x",
 697             param);
 698     }
 699     UpdateProps(slot, context.get());
 700 }
 701 END_API_FUNC
 702
 703 AL_API void AL_APIENTRY alAuxiliaryEffectSlotiv(ALuint effectslot, ALenum param, const ALint *values)
 704 START_API_FUNC
 705 {
 706     switch(param)
 707     {
 708     case AL_EFFECTSLOT_EFFECT:
 709     case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
 710     case AL_EFFECTSLOT_TARGET_SOFT:
 711     case AL_EFFECTSLOT_STATE_SOFT:
 712     case AL_BUFFER:
 713         alAuxiliaryEffectSloti(effectslot, param, values[0]);
 714         return;
 715     }
 716
 717     ContextRef context{GetContextRef()};
 718     if UNLIKELY(!context) return;
 719
 720     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 721     ALeffectslot *slot = LookupEffectSlot(context.get(), effectslot);
 722     if UNLIKELY(!slot)
 723         SETERR_RETURN(context, AL_INVALID_NAME,, "Invalid effect slot ID %u", effectslot);
 724
 725     switch(param)
 726     {
 727     default:
 728         SETERR_RETURN(context, AL_INVALID_ENUM,,
 729             "Invalid effect slot integer-vector property 0x%04x", param);
 730     }
 731 }
 732 END_API_FUNC
 733
 734 AL_API void AL_APIENTRY alAuxiliaryEffectSlotf(ALuint effectslot, ALenum param, ALfloat value)
 735 START_API_FUNC
 736 {
 737     ContextRef context{GetContextRef()};
 738     if UNLIKELY(!context) return;
 739
 740     std::lock_guard<std::mutex> _{context->mPropLock};
 741     std::lock_guard<std::mutex> __{context->mEffectSlotLock};
 742     ALeffectslot *slot = LookupEffectSlot(context.get(), effectslot);
 743     if UNLIKELY(!slot)
 744         SETERR_RETURN(context, AL_INVALID_NAME,, "Invalid effect slot ID %u", effectslot);
 745
 746     switch(param)
 747     {
 748     case AL_EFFECTSLOT_GAIN:
 749         if(!(value >= 0.0f && value <= 1.0f))
 750             SETERR_RETURN(context, AL_INVALID_VALUE,, "Effect slot gain out of range");
 751         if UNLIKELY(slot->Gain == value)
 752             return;
 753         slot->Gain = value;
 754         break;
 755
 756     default:
 757         SETERR_RETURN(context, AL_INVALID_ENUM,, "Invalid effect slot float property 0x%04x",
 758             param);
 759     }
 760     UpdateProps(slot, context.get());
 761 }
 762 END_API_FUNC
 763
 764 AL_API void AL_APIENTRY alAuxiliaryEffectSlotfv(ALuint effectslot, ALenum param, const ALfloat *values)
 765 START_API_FUNC
 766 {
 767     switch(param)
 768     {
 769     case AL_EFFECTSLOT_GAIN:
 770         alAuxiliaryEffectSlotf(effectslot, param, values[0]);
 771         return;
 772     }
 773
 774     ContextRef context{GetContextRef()};
 775     if UNLIKELY(!context) return;
 776
 777     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 778     ALeffectslot *slot = LookupEffectSlot(context.get(), effectslot);
 779     if UNLIKELY(!slot)
 780         SETERR_RETURN(context, AL_INVALID_NAME,, "Invalid effect slot ID %u", effectslot);
 781
 782     switch(param)
 783     {
 784     default:
 785         SETERR_RETURN(context, AL_INVALID_ENUM,,
 786             "Invalid effect slot float-vector property 0x%04x", param);
 787     }
 788 }
 789 END_API_FUNC
 790
 791
 792 AL_API void AL_APIENTRY alGetAuxiliaryEffectSloti(ALuint effectslot, ALenum param, ALint *value)
 793 START_API_FUNC
 794 {
 795     ContextRef context{GetContextRef()};
 796     if UNLIKELY(!context) return;
 797
 798     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 799     ALeffectslot *slot = LookupEffectSlot(context.get(), effectslot);
 800     if UNLIKELY(!slot)
 801         SETERR_RETURN(context, AL_INVALID_NAME,, "Invalid effect slot ID %u", effectslot);
 802
 803     switch(param)
 804     {
 805     case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
 806         *value = slot->AuxSendAuto ? AL_TRUE : AL_FALSE;
 807         break;
 808
 809     case AL_EFFECTSLOT_TARGET_SOFT:
 810         if(auto *target = slot->Target)
 811             *value = static_cast<ALint>(target->id);
 812         else
 813             *value = 0;
 814         break;
 815
 816     case AL_EFFECTSLOT_STATE_SOFT:
 817         *value = static_cast<int>(slot->mState);
 818         break;
 819
 820     case AL_BUFFER:
 821         if(auto *buffer = slot->Buffer)
 822             *value = static_cast<ALint>(buffer->id);
 823         else
 824             *value = 0;
 825         break;
 826
 827     default:
 828         context->setError(AL_INVALID_ENUM, "Invalid effect slot integer property 0x%04x", param);
 829     }
 830 }
 831 END_API_FUNC
 832
 833 AL_API void AL_APIENTRY alGetAuxiliaryEffectSlotiv(ALuint effectslot, ALenum param, ALint *values)
 834 START_API_FUNC
 835 {
 836     switch(param)
 837     {
 838     case AL_EFFECTSLOT_EFFECT:
 839     case AL_EFFECTSLOT_AUXILIARY_SEND_AUTO:
 840     case AL_EFFECTSLOT_TARGET_SOFT:
 841     case AL_EFFECTSLOT_STATE_SOFT:
 842     case AL_BUFFER:
 843         alGetAuxiliaryEffectSloti(effectslot, param, values);
 844         return;
 845     }
 846
 847     ContextRef context{GetContextRef()};
 848     if UNLIKELY(!context) return;
 849
 850     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 851     ALeffectslot *slot = LookupEffectSlot(context.get(), effectslot);
 852     if UNLIKELY(!slot)
 853         SETERR_RETURN(context, AL_INVALID_NAME,, "Invalid effect slot ID %u", effectslot);
 854
 855     switch(param)
 856     {
 857     default:
 858         context->setError(AL_INVALID_ENUM, "Invalid effect slot integer-vector property 0x%04x",
 859             param);
 860     }
 861 }
 862 END_API_FUNC
 863
 864 AL_API void AL_APIENTRY alGetAuxiliaryEffectSlotf(ALuint effectslot, ALenum param, ALfloat *value)
 865 START_API_FUNC
 866 {
 867     ContextRef context{GetContextRef()};
 868     if UNLIKELY(!context) return;
 869
 870     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 871     ALeffectslot *slot = LookupEffectSlot(context.get(), effectslot);
 872     if UNLIKELY(!slot)
 873         SETERR_RETURN(context, AL_INVALID_NAME,, "Invalid effect slot ID %u", effectslot);
 874
 875     switch(param)
 876     {
 877     case AL_EFFECTSLOT_GAIN:
 878         *value = slot->Gain;
 879         break;
 880
 881     default:
 882         context->setError(AL_INVALID_ENUM, "Invalid effect slot float property 0x%04x", param);
 883     }
 884 }
 885 END_API_FUNC
 886
 887 AL_API void AL_APIENTRY alGetAuxiliaryEffectSlotfv(ALuint effectslot, ALenum param, ALfloat *values)
 888 START_API_FUNC
 889 {
 890     switch(param)
 891     {
 892     case AL_EFFECTSLOT_GAIN:
 893         alGetAuxiliaryEffectSlotf(effectslot, param, values);
 894         return;
 895     }
 896
 897     ContextRef context{GetContextRef()};
 898     if UNLIKELY(!context) return;
 899
 900     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
 901     ALeffectslot *slot = LookupEffectSlot(context.get(), effectslot);
 902     if UNLIKELY(!slot)
 903         SETERR_RETURN(context, AL_INVALID_NAME,, "Invalid effect slot ID %u", effectslot);
 904
 905     switch(param)
 906     {
 907     default:
 908         context->setError(AL_INVALID_ENUM, "Invalid effect slot float-vector property 0x%04x",
 909             param);
 910     }
 911 }
 912 END_API_FUNC
 913
 914
 915 ALeffectslot::ALeffectslot()
 916 {
 917     EffectStateFactory *factory{getFactoryByType(EffectSlotType::None)};
 918     if(!factory) throw std::runtime_error{"Failed to get null effect factory"};
 919
 920     al::intrusive_ptr<EffectState> state{factory->create()};
 921     Effect.State = state;
 922     mSlot.mEffectState = state.release();
 923 }
 924
 925 ALeffectslot::~ALeffectslot()
 926 {
 927     if(Target)
 928         DecrementRef(Target->ref);
 929     Target = nullptr;
 930     if(Buffer)
 931         DecrementRef(Buffer->ref);
 932     Buffer = nullptr;
 933
 934     EffectSlotProps *props{mSlot.Update.exchange(nullptr)};
 935     if(props)
 936     {
 937         TRACE("Freed unapplied AuxiliaryEffectSlot update %p\n",
 938             decltype(std::declval<void*>()){props});
 939         delete props;
 940     }
 941
 942     if(mSlot.mEffectState)
 943         mSlot.mEffectState->release();
 944 }
 945
 946 ALenum ALeffectslot::initEffect(ALenum effectType, const EffectProps &effectProps,
 947     ALCcontext *context)
 948 {
 949     EffectSlotType newtype{EffectSlotTypeFromEnum(effectType)};
 950     if(newtype != Effect.Type)
 951     {
 952         EffectStateFactory *factory{getFactoryByType(newtype)};
 953         if(!factory)
 954         {
 955             ERR("Failed to find factory for effect slot type %d\n", static_cast<int>(newtype));
 956             return AL_INVALID_ENUM;
 957         }
 958         al::intrusive_ptr<EffectState> state{factory->create()};
 959
 960         ALCdevice *device{context->mALDevice.get()};
 961         std::unique_lock<std::mutex> statelock{device->StateLock};
 962         state->mOutTarget = device->Dry.Buffer;
 963         {
 964             FPUCtl mixer_mode{};
 965             state->deviceUpdate(device, GetEffectBuffer(Buffer));
 966         }
 967
 968         Effect.Type = newtype;
 969         Effect.Props = effectProps;
 970
 971         Effect.State = std::move(state);
 972     }
 973     else if(newtype != EffectSlotType::None)
 974         Effect.Props = effectProps;
 975
 976     /* Remove state references from old effect slot property updates. */
 977     EffectSlotProps *props{context->mFreeEffectslotProps.load()};
 978     while(props)
 979     {
 980         props->State = nullptr;
 981         props = props->next.load(std::memory_order_relaxed);
 982     }
 983
 984     return AL_NO_ERROR;
 985 }
 986
 987 void ALeffectslot::updateProps(ALCcontext *context)
 988 {
 989     /* Get an unused property container, or allocate a new one as needed. */
 990     EffectSlotProps *props{context->mFreeEffectslotProps.load(std::memory_order_relaxed)};
 991     if(!props)
 992         props = new EffectSlotProps{};
 993     else
 994     {
 995         EffectSlotProps *next;
 996         do {
 997             next = props->next.load(std::memory_order_relaxed);
 998         } while(context->mFreeEffectslotProps.compare_exchange_weak(props, next,
 999                 std::memory_order_seq_cst, std::memory_order_acquire) == 0);
1000     }
1001
1002     /* Copy in current property values. */
1003     props->Gain = Gain;
1004     props->AuxSendAuto = AuxSendAuto;
1005     props->Target = Target ? &Target->mSlot : nullptr;
1006
1007     props->Type = Effect.Type;
1008     props->Props = Effect.Props;
1009     props->State = Effect.State;
1010
1011     /* Set the new container for updating internal parameters. */
1012     props = mSlot.Update.exchange(props, std::memory_order_acq_rel);
1013     if(props)
1014     {
1015         /* If there was an unused update container, put it back in the
1016          * freelist.
1017          */
1018         props->State = nullptr;
1019         AtomicReplaceHead(context->mFreeEffectslotProps, props);
1020     }
1021 }
1022
1023 void UpdateAllEffectSlotProps(ALCcontext *context)
1024 {
1025     std::lock_guard<std::mutex> _{context->mEffectSlotLock};
1026 #ifdef ALSOFT_EAX
1027     if(context->has_eax())
1028         context->eax_commit_fx_slots();
1029 #endif
1030     for(auto &sublist : context->mEffectSlotList)
1031     {
1032         uint64_t usemask{~sublist.FreeMask};
1033         while(usemask)
1034         {
1035             const int idx{al::countr_zero(usemask)};
1036             usemask &= ~(1_u64 << idx);
1037             ALeffectslot *slot{sublist.EffectSlots + idx};
1038
1039             if(slot->mState != SlotState::Stopped && std::exchange(slot->mPropsDirty, false))
1040                 slot->updateProps(context);
1041         }
1042     }
1043 }
1044
1045 EffectSlotSubList::~EffectSlotSubList()
1046 {
1047     uint64_t usemask{~FreeMask};
1048     while(usemask)
1049     {
1050         const int idx{al::countr_zero(usemask)};
1051         al::destroy_at(EffectSlots+idx);
1052         usemask &= ~(1_u64 << idx);
1053     }
1054     FreeMask = ~usemask;
1055     al_free(EffectSlots);
1056     EffectSlots = nullptr;
1057 }
1058
1059 #ifdef ALSOFT_EAX
1060 namespace {
1061
1062 class EaxFxSlotException :
1063     public EaxException
1064 {
1065 public:
1066         explicit EaxFxSlotException(
1067                 const char* message)
1068                 :
1069                 EaxException{"EAX_FX_SLOT", message}
1070         {
1071         }
1072 }; // EaxFxSlotException
1073
1074
1075 } // namespace
1076
1077
1078 void ALeffectslot::eax_initialize(
1079     ALCcontext& al_context,
1080     EaxFxSlotIndexValue index)
1081 {
1082     eax_al_context_ = &al_context;
1083
1084     if (index >= EAX_MAX_FXSLOTS)
1085     {
1086         eax_fail("Index out of range.");
1087     }
1088
1089     eax_fx_slot_index_ = index;
1090
1091     eax_initialize_eax();
1092     eax_initialize_lock();
1093     eax_initialize_effects();
1094 }
1095
1096 const EAX50FXSLOTPROPERTIES& ALeffectslot::eax_get_eax_fx_slot() const noexcept
1097 {
1098     return eax_eax_fx_slot_;
1099 }
1100
1101 void ALeffectslot::eax_ensure_is_unlocked() const
1102 {
1103     if (eax_is_locked_)
1104         eax_fail("Locked.");
1105 }
1106
1107 void ALeffectslot::eax_validate_fx_slot_effect(
1108     const GUID& eax_effect_id)
1109 {
1110     eax_ensure_is_unlocked();
1111
1112     if (eax_effect_id != EAX_NULL_GUID &&
1113         eax_effect_id != EAX_REVERB_EFFECT &&
1114         eax_effect_id != EAX_AGCCOMPRESSOR_EFFECT &&
1115         eax_effect_id != EAX_AUTOWAH_EFFECT &&
1116         eax_effect_id != EAX_CHORUS_EFFECT &&
1117         eax_effect_id != EAX_DISTORTION_EFFECT &&
1118         eax_effect_id != EAX_ECHO_EFFECT &&
1119         eax_effect_id != EAX_EQUALIZER_EFFECT &&
1120         eax_effect_id != EAX_FLANGER_EFFECT &&
1121         eax_effect_id != EAX_FREQUENCYSHIFTER_EFFECT &&
1122         eax_effect_id != EAX_VOCALMORPHER_EFFECT &&
1123         eax_effect_id != EAX_PITCHSHIFTER_EFFECT &&
1124         eax_effect_id != EAX_RINGMODULATOR_EFFECT)
1125     {
1126         eax_fail("Unsupported EAX effect GUID.");
1127     }
1128 }
1129
1130 void ALeffectslot::eax_validate_fx_slot_volume(
1131     long eax_volume)
1132 {
1133     eax_validate_range<EaxFxSlotException>(
1134         "Volume",
1135         eax_volume,
1136         EAXFXSLOT_MINVOLUME,
1137         EAXFXSLOT_MAXVOLUME);
1138 }
1139
1140 void ALeffectslot::eax_validate_fx_slot_lock(
1141     long eax_lock)
1142 {
1143     eax_ensure_is_unlocked();
1144
1145     eax_validate_range<EaxFxSlotException>(
1146         "Lock",
1147         eax_lock,
1148         EAXFXSLOT_MINLOCK,
1149         EAXFXSLOT_MAXLOCK);
1150 }
1151
1152 void ALeffectslot::eax_validate_fx_slot_flags(
1153     unsigned long eax_flags,
1154     int eax_version)
1155 {
1156     eax_validate_range<EaxFxSlotException>(
1157         "Flags",
1158         eax_flags,
1159         0UL,
1160         ~(eax_version == 4 ? EAX40FXSLOTFLAGS_RESERVED : EAX50FXSLOTFLAGS_RESERVED));
1161 }
1162
1163 void ALeffectslot::eax_validate_fx_slot_occlusion(
1164     long eax_occlusion)
1165 {
1166     eax_validate_range<EaxFxSlotException>(
1167         "Occlusion",
1168         eax_occlusion,
1169         EAXFXSLOT_MINOCCLUSION,
1170         EAXFXSLOT_MAXOCCLUSION);
1171 }
1172
1173 void ALeffectslot::eax_validate_fx_slot_occlusion_lf_ratio(
1174     float eax_occlusion_lf_ratio)
1175 {
1176     eax_validate_range<EaxFxSlotException>(
1177         "Occlusion LF Ratio",
1178         eax_occlusion_lf_ratio,
1179         EAXFXSLOT_MINOCCLUSIONLFRATIO,
1180         EAXFXSLOT_MAXOCCLUSIONLFRATIO);
1181 }
1182
1183 void ALeffectslot::eax_validate_fx_slot_all(
1184     const EAX40FXSLOTPROPERTIES& fx_slot,
1185     int eax_version)
1186 {
1187     eax_validate_fx_slot_effect(fx_slot.guidLoadEffect);
1188     eax_validate_fx_slot_volume(fx_slot.lVolume);
1189     eax_validate_fx_slot_lock(fx_slot.lLock);
1190     eax_validate_fx_slot_flags(fx_slot.ulFlags, eax_version);
1191 }
1192
1193 void ALeffectslot::eax_validate_fx_slot_all(
1194     const EAX50FXSLOTPROPERTIES& fx_slot,
1195     int eax_version)
1196 {
1197     eax_validate_fx_slot_all(static_cast<const EAX40FXSLOTPROPERTIES&>(fx_slot), eax_version);
1198
1199     eax_validate_fx_slot_occlusion(fx_slot.lOcclusion);
1200     eax_validate_fx_slot_occlusion_lf_ratio(fx_slot.flOcclusionLFRatio);
1201 }
1202
1203 void ALeffectslot::eax_set_fx_slot_effect(
1204     const GUID& eax_effect_id)
1205 {
1206     if (eax_eax_fx_slot_.guidLoadEffect == eax_effect_id)
1207     {
1208         return;
1209     }
1210
1211     eax_eax_fx_slot_.guidLoadEffect = eax_effect_id;
1212
1213     eax_set_fx_slot_effect();
1214 }
1215
1216 void ALeffectslot::eax_set_fx_slot_volume(
1217     long eax_volume)
1218 {
1219     if (eax_eax_fx_slot_.lVolume == eax_volume)
1220     {
1221         return;
1222     }
1223
1224     eax_eax_fx_slot_.lVolume = eax_volume;
1225
1226     eax_set_fx_slot_volume();
1227 }
1228
1229 void ALeffectslot::eax_set_fx_slot_lock(
1230     long eax_lock)
1231 {
1232     if (eax_eax_fx_slot_.lLock == eax_lock)
1233     {
1234         return;
1235     }
1236
1237     eax_eax_fx_slot_.lLock = eax_lock;
1238 }
1239
1240 void ALeffectslot::eax_set_fx_slot_flags(
1241     unsigned long eax_flags)
1242 {
1243     if (eax_eax_fx_slot_.ulFlags == eax_flags)
1244     {
1245         return;
1246     }
1247
1248     eax_eax_fx_slot_.ulFlags = eax_flags;
1249
1250     eax_set_fx_slot_flags();
1251 }
1252
1253 // [[nodiscard]]
1254 bool ALeffectslot::eax_set_fx_slot_occlusion(
1255     long eax_occlusion)
1256 {
1257     if (eax_eax_fx_slot_.lOcclusion == eax_occlusion)
1258     {
1259         return false;
1260     }
1261
1262     eax_eax_fx_slot_.lOcclusion = eax_occlusion;
1263
1264     return true;
1265 }
1266
1267 // [[nodiscard]]
1268 bool ALeffectslot::eax_set_fx_slot_occlusion_lf_ratio(
1269     float eax_occlusion_lf_ratio)
1270 {
1271     if (eax_eax_fx_slot_.flOcclusionLFRatio == eax_occlusion_lf_ratio)
1272     {
1273         return false;
1274     }
1275
1276     eax_eax_fx_slot_.flOcclusionLFRatio = eax_occlusion_lf_ratio;
1277
1278     return true;
1279 }
1280
1281 void ALeffectslot::eax_set_fx_slot_all(
1282     const EAX40FXSLOTPROPERTIES& eax_fx_slot)
1283 {
1284     eax_set_fx_slot_effect(eax_fx_slot.guidLoadEffect);
1285     eax_set_fx_slot_volume(eax_fx_slot.lVolume);
1286     eax_set_fx_slot_lock(eax_fx_slot.lLock);
1287     eax_set_fx_slot_flags(eax_fx_slot.ulFlags);
1288 }
1289
1290 // [[nodiscard]]
1291 bool ALeffectslot::eax_set_fx_slot_all(
1292     const EAX50FXSLOTPROPERTIES& eax_fx_slot)
1293 {
1294     eax_set_fx_slot_all(static_cast<const EAX40FXSLOTPROPERTIES&>(eax_fx_slot));
1295
1296     const auto is_occlusion_modified = eax_set_fx_slot_occlusion(eax_fx_slot.lOcclusion);
1297     const auto is_occlusion_lf_ratio_modified = eax_set_fx_slot_occlusion_lf_ratio(eax_fx_slot.flOcclusionLFRatio);
1298
1299     return is_occlusion_modified || is_occlusion_lf_ratio_modified;
1300 }
1301
1302 void ALeffectslot::eax_unlock_legacy() noexcept
1303 {
1304     assert(eax_fx_slot_index_ < 2);
1305     eax_is_locked_ = false;
1306     eax_eax_fx_slot_.lLock = EAXFXSLOT_UNLOCKED;
1307 }
1308
1309 [[noreturn]]
1310 void ALeffectslot::eax_fail(
1311     const char* message)
1312 {
1313     throw EaxFxSlotException{message};
1314 }
1315
1316 GUID ALeffectslot::eax_get_eax_default_effect_guid() const noexcept
1317 {
1318     switch (eax_fx_slot_index_)
1319     {
1320         case 0: return EAX_REVERB_EFFECT;
1321         case 1: return EAX_CHORUS_EFFECT;
1322         default: return EAX_NULL_GUID;
1323     }
1324 }
1325
1326 long ALeffectslot::eax_get_eax_default_lock() const noexcept
1327 {
1328     return eax_fx_slot_index_ < 2 ? EAXFXSLOT_LOCKED : EAXFXSLOT_UNLOCKED;
1329 }
1330
1331 void ALeffectslot::eax_set_eax_fx_slot_defaults()
1332 {
1333     eax_eax_fx_slot_.guidLoadEffect = eax_get_eax_default_effect_guid();
1334     eax_eax_fx_slot_.lVolume = EAXFXSLOT_DEFAULTVOLUME;
1335     eax_eax_fx_slot_.lLock = eax_get_eax_default_lock();
1336     eax_eax_fx_slot_.ulFlags = EAX40FXSLOT_DEFAULTFLAGS;
1337     eax_eax_fx_slot_.lOcclusion = EAXFXSLOT_DEFAULTOCCLUSION;
1338     eax_eax_fx_slot_.flOcclusionLFRatio = EAXFXSLOT_DEFAULTOCCLUSIONLFRATIO;
1339 }
1340
1341 void ALeffectslot::eax_initialize_eax()
1342 {
1343     eax_set_eax_fx_slot_defaults();
1344 }
1345
1346 void ALeffectslot::eax_initialize_lock()
1347 {
1348     eax_is_locked_ = (eax_fx_slot_index_ < 2);
1349 }
1350
1351 void ALeffectslot::eax_initialize_effects()
1352 {
1353     eax_set_fx_slot_effect();
1354 }
1355
1356 void ALeffectslot::eax_get_fx_slot_all(
1357     const EaxEaxCall& eax_call) const
1358 {
1359     switch (eax_call.get_version())
1360     {
1361         case 4:
1362             eax_call.set_value<EaxFxSlotException, EAX40FXSLOTPROPERTIES>(eax_eax_fx_slot_);
1363             break;
1364
1365         case 5:
1366             eax_call.set_value<EaxFxSlotException, EAX50FXSLOTPROPERTIES>(eax_eax_fx_slot_);
1367             break;
1368
1369         default:
1370             eax_fail("Unsupported EAX version.");
1371     }
1372 }
1373
1374 void ALeffectslot::eax_get_fx_slot(
1375     const EaxEaxCall& eax_call) const
1376 {
1377     switch (eax_call.get_property_id())
1378     {
1379         case EAXFXSLOT_ALLPARAMETERS:
1380             eax_get_fx_slot_all(eax_call);
1381             break;
1382
1383         case EAXFXSLOT_LOADEFFECT:
1384             eax_call.set_value<EaxFxSlotException>(eax_eax_fx_slot_.guidLoadEffect);
1385             break;
1386
1387         case EAXFXSLOT_VOLUME:
1388             eax_call.set_value<EaxFxSlotException>(eax_eax_fx_slot_.lVolume);
1389             break;
1390
1391         case EAXFXSLOT_LOCK:
1392             eax_call.set_value<EaxFxSlotException>(eax_eax_fx_slot_.lLock);
1393             break;
1394
1395         case EAXFXSLOT_FLAGS:
1396             eax_call.set_value<EaxFxSlotException>(eax_eax_fx_slot_.ulFlags);
1397             break;
1398
1399         case EAXFXSLOT_OCCLUSION:
1400             eax_call.set_value<EaxFxSlotException>(eax_eax_fx_slot_.lOcclusion);
1401             break;
1402
1403         case EAXFXSLOT_OCCLUSIONLFRATIO:
1404             eax_call.set_value<EaxFxSlotException>(eax_eax_fx_slot_.flOcclusionLFRatio);
1405             break;
1406
1407         default:
1408             eax_fail("Unsupported FX slot property id.");
1409     }
1410 }
1411
1412 // [[nodiscard]]
1413 bool ALeffectslot::eax_get(
1414     const EaxEaxCall& eax_call)
1415 {
1416     switch (eax_call.get_property_set_id())
1417     {
1418         case EaxEaxCallPropertySetId::fx_slot:
1419             eax_get_fx_slot(eax_call);
1420             break;
1421
1422         case EaxEaxCallPropertySetId::fx_slot_effect:
1423             eax_dispatch_effect(eax_call);
1424             break;
1425
1426         default:
1427             eax_fail("Unsupported property id.");
1428     }
1429
1430     return false;
1431 }
1432
1433 void ALeffectslot::eax_set_fx_slot_effect(
1434     ALenum al_effect_type)
1435 {
1436     if(!IsValidEffectType(al_effect_type))
1437         eax_fail("Unsupported effect.");
1438
1439     eax_effect_ = nullptr;
1440     eax_effect_ = eax_create_eax_effect(al_effect_type);
1441
1442     eax_set_effect_slot_effect(*eax_effect_);
1443 }
1444
1445 void ALeffectslot::eax_set_fx_slot_effect()
1446 {
1447     auto al_effect_type = ALenum{};
1448
1449     if (false)
1450     {
1451     }
1452     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_NULL_GUID)
1453     {
1454         al_effect_type = AL_EFFECT_NULL;
1455     }
1456     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_AUTOWAH_EFFECT)
1457     {
1458         al_effect_type = AL_EFFECT_AUTOWAH;
1459     }
1460     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_CHORUS_EFFECT)
1461     {
1462         al_effect_type = AL_EFFECT_CHORUS;
1463     }
1464     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_AGCCOMPRESSOR_EFFECT)
1465     {
1466         al_effect_type = AL_EFFECT_COMPRESSOR;
1467     }
1468     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_DISTORTION_EFFECT)
1469     {
1470         al_effect_type = AL_EFFECT_DISTORTION;
1471     }
1472     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_REVERB_EFFECT)
1473     {
1474         al_effect_type = AL_EFFECT_EAXREVERB;
1475     }
1476     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_ECHO_EFFECT)
1477     {
1478         al_effect_type = AL_EFFECT_ECHO;
1479     }
1480     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_EQUALIZER_EFFECT)
1481     {
1482         al_effect_type = AL_EFFECT_EQUALIZER;
1483     }
1484     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_FLANGER_EFFECT)
1485     {
1486         al_effect_type = AL_EFFECT_FLANGER;
1487     }
1488     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_FREQUENCYSHIFTER_EFFECT)
1489     {
1490         al_effect_type = AL_EFFECT_FREQUENCY_SHIFTER;
1491     }
1492     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_PITCHSHIFTER_EFFECT)
1493     {
1494         al_effect_type = AL_EFFECT_PITCH_SHIFTER;
1495     }
1496     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_RINGMODULATOR_EFFECT)
1497     {
1498         al_effect_type = AL_EFFECT_RING_MODULATOR;
1499     }
1500     else if (eax_eax_fx_slot_.guidLoadEffect == EAX_VOCALMORPHER_EFFECT)
1501     {
1502         al_effect_type = AL_EFFECT_VOCAL_MORPHER;
1503     }
1504     else
1505     {
1506         eax_fail("Unsupported effect.");
1507     }
1508
1509     eax_set_fx_slot_effect(al_effect_type);
1510 }
1511
1512 void ALeffectslot::eax_set_efx_effect_slot_gain()
1513 {
1514     const auto gain = level_mb_to_gain(
1515         static_cast<float>(clamp(
1516             eax_eax_fx_slot_.lVolume,
1517             EAXFXSLOT_MINVOLUME,
1518             EAXFXSLOT_MAXVOLUME)));
1519
1520     eax_set_effect_slot_gain(gain);
1521 }
1522
1523 void ALeffectslot::eax_set_fx_slot_volume()
1524 {
1525     eax_set_efx_effect_slot_gain();
1526 }
1527
1528 void ALeffectslot::eax_set_effect_slot_send_auto()
1529 {
1530     eax_set_effect_slot_send_auto((eax_eax_fx_slot_.ulFlags & EAXFXSLOTFLAGS_ENVIRONMENT) != 0);
1531 }
1532
1533 void ALeffectslot::eax_set_fx_slot_flags()
1534 {
1535     eax_set_effect_slot_send_auto();
1536 }
1537
1538 void ALeffectslot::eax_set_fx_slot_effect(
1539     const EaxEaxCall& eax_call)
1540 {
1541     const auto& eax_effect_id =
1542         eax_call.get_value<EaxFxSlotException, const decltype(EAX40FXSLOTPROPERTIES::guidLoadEffect)>();
1543
1544     eax_validate_fx_slot_effect(eax_effect_id);
1545     eax_set_fx_slot_effect(eax_effect_id);
1546 }
1547
1548 void ALeffectslot::eax_set_fx_slot_volume(
1549     const EaxEaxCall& eax_call)
1550 {
1551     const auto& eax_volume =
1552         eax_call.get_value<EaxFxSlotException, const decltype(EAX40FXSLOTPROPERTIES::lVolume)>();
1553
1554     eax_validate_fx_slot_volume(eax_volume);
1555     eax_set_fx_slot_volume(eax_volume);
1556 }
1557
1558 void ALeffectslot::eax_set_fx_slot_lock(
1559     const EaxEaxCall& eax_call)
1560 {
1561     const auto& eax_lock =
1562         eax_call.get_value<EaxFxSlotException, const decltype(EAX40FXSLOTPROPERTIES::lLock)>();
1563
1564     eax_validate_fx_slot_lock(eax_lock);
1565     eax_set_fx_slot_lock(eax_lock);
1566 }
1567
1568 void ALeffectslot::eax_set_fx_slot_flags(
1569     const EaxEaxCall& eax_call)
1570 {
1571     const auto& eax_flags =
1572         eax_call.get_value<EaxFxSlotException, const decltype(EAX40FXSLOTPROPERTIES::ulFlags)>();
1573
1574     eax_validate_fx_slot_flags(eax_flags, eax_call.get_version());
1575     eax_set_fx_slot_flags(eax_flags);
1576 }
1577
1578 // [[nodiscard]]
1579 bool ALeffectslot::eax_set_fx_slot_occlusion(
1580     const EaxEaxCall& eax_call)
1581 {
1582     const auto& eax_occlusion =
1583         eax_call.get_value<EaxFxSlotException, const decltype(EAX50FXSLOTPROPERTIES::lOcclusion)>();
1584
1585     eax_validate_fx_slot_occlusion(eax_occlusion);
1586
1587     return eax_set_fx_slot_occlusion(eax_occlusion);
1588 }
1589
1590 // [[nodiscard]]
1591 bool ALeffectslot::eax_set_fx_slot_occlusion_lf_ratio(
1592     const EaxEaxCall& eax_call)
1593 {
1594     const auto& eax_occlusion_lf_ratio =
1595         eax_call.get_value<EaxFxSlotException, const decltype(EAX50FXSLOTPROPERTIES::flOcclusionLFRatio)>();
1596
1597     eax_validate_fx_slot_occlusion_lf_ratio(eax_occlusion_lf_ratio);
1598
1599     return eax_set_fx_slot_occlusion_lf_ratio(eax_occlusion_lf_ratio);
1600 }
1601
1602 // [[nodiscard]]
1603 bool ALeffectslot::eax_set_fx_slot_all(
1604     const EaxEaxCall& eax_call)
1605 {
1606     switch (eax_call.get_version())
1607     {
1608         case 4:
1609             {
1610                 const auto& eax_all =
1611                     eax_call.get_value<EaxFxSlotException, const EAX40FXSLOTPROPERTIES>();
1612
1613                 eax_validate_fx_slot_all(eax_all, eax_call.get_version());
1614                 eax_set_fx_slot_all(eax_all);
1615
1616                 return false;
1617             }
1618
1619         case 5:
1620             {
1621                 const auto& eax_all =
1622                     eax_call.get_value<EaxFxSlotException, const EAX50FXSLOTPROPERTIES>();
1623
1624                 eax_validate_fx_slot_all(eax_all, eax_call.get_version());
1625                 return eax_set_fx_slot_all(eax_all);
1626             }
1627
1628         default:
1629             eax_fail("Unsupported EAX version.");
1630     }
1631 }
1632
1633 bool ALeffectslot::eax_set_fx_slot(
1634     const EaxEaxCall& eax_call)
1635 {
1636     switch (eax_call.get_property_id())
1637     {
1638         case EAXFXSLOT_NONE:
1639             return false;
1640
1641         case EAXFXSLOT_ALLPARAMETERS:
1642             return eax_set_fx_slot_all(eax_call);
1643
1644         case EAXFXSLOT_LOADEFFECT:
1645             eax_set_fx_slot_effect(eax_call);
1646             return false;
1647
1648         case EAXFXSLOT_VOLUME:
1649             eax_set_fx_slot_volume(eax_call);
1650             return false;
1651
1652         case EAXFXSLOT_LOCK:
1653             eax_set_fx_slot_lock(eax_call);
1654             return false;
1655
1656         case EAXFXSLOT_FLAGS:
1657             eax_set_fx_slot_flags(eax_call);
1658             return false;
1659
1660         case EAXFXSLOT_OCCLUSION:
1661             return eax_set_fx_slot_occlusion(eax_call);
1662
1663         case EAXFXSLOT_OCCLUSIONLFRATIO:
1664             return eax_set_fx_slot_occlusion_lf_ratio(eax_call);
1665
1666
1667         default:
1668             eax_fail("Unsupported FX slot property id.");
1669     }
1670 }
1671
1672 // [[nodiscard]]
1673 bool ALeffectslot::eax_set(const EaxEaxCall& eax_call)
1674 {
1675     switch(eax_call.get_property_set_id())
1676     {
1677         case EaxEaxCallPropertySetId::fx_slot:
1678             return eax_set_fx_slot(eax_call);
1679
1680         case EaxEaxCallPropertySetId::fx_slot_effect:
1681             eax_dispatch_effect(eax_call);
1682             break;
1683
1684         default:
1685             eax_fail("Unsupported property id.");
1686     }
1687
1688     return false;
1689 }
1690
1691 void ALeffectslot::eax_dispatch_effect(const EaxEaxCall& eax_call)
1692 { if(eax_effect_) eax_effect_->dispatch(eax_call); }
1693
1694 void ALeffectslot::eax_apply_deferred()
1695 {
1696     /* The other FXSlot properties (volume, effect, etc) aren't deferred? */
1697
1698     auto is_changed = false;
1699     if(eax_effect_)
1700         is_changed = eax_effect_->apply_deferred();
1701     if(is_changed)
1702         eax_set_effect_slot_effect(*eax_effect_);
1703 }
1704
1705
1706 void ALeffectslot::eax_set_effect_slot_effect(EaxEffect &effect)
1707 {
1708 #define EAX_PREFIX "[EAX_SET_EFFECT_SLOT_EFFECT] "
1709
1710     const auto error = initEffect(effect.al_effect_type_, effect.al_effect_props_, eax_al_context_);
1711     if (error != AL_NO_ERROR)
1712     {
1713         ERR(EAX_PREFIX "%s\n", "Failed to initialize an effect.");
1714         return;
1715     }
1716
1717     if (mState == SlotState::Initial)
1718     {
1719         mPropsDirty = false;
1720         updateProps(eax_al_context_);
1721
1722         auto effect_slot_ptr = this;
1723
1724         AddActiveEffectSlots({&effect_slot_ptr, 1}, eax_al_context_);
1725         mState = SlotState::Playing;
1726
1727         return;
1728     }
1729
1730     UpdateProps(this, eax_al_context_);
1731
1732 #undef EAX_PREFIX
1733 }
1734
1735 void ALeffectslot::eax_set_effect_slot_send_auto(
1736     bool is_send_auto)
1737 {
1738     if(AuxSendAuto == is_send_auto)
1739         return;
1740
1741     AuxSendAuto = is_send_auto;
1742     UpdateProps(this, eax_al_context_);
1743 }
1744
1745 void ALeffectslot::eax_set_effect_slot_gain(
1746     ALfloat gain)
1747 {
1748 #define EAX_PREFIX "[EAX_SET_EFFECT_SLOT_GAIN] "
1749
1750     if(gain == Gain)
1751         return;
1752     if(gain < 0.0f || gain > 1.0f)
1753         ERR(EAX_PREFIX "Gain out of range (%f)\n", gain);
1754
1755     Gain = clampf(gain, 0.0f, 1.0f);
1756     UpdateProps(this, eax_al_context_);
1757
1758 #undef EAX_PREFIX
1759 }
1760
1761
1762 void ALeffectslot::EaxDeleter::operator()(ALeffectslot* effect_slot)
1763 {
1764     assert(effect_slot);
1765     eax_delete_al_effect_slot(*effect_slot->eax_al_context_, *effect_slot);
1766 }
1767
1768
1769 EaxAlEffectSlotUPtr eax_create_al_effect_slot(
1770     ALCcontext& context)
1771 {
1772 #define EAX_PREFIX "[EAX_MAKE_EFFECT_SLOT] "
1773
1774     std::unique_lock<std::mutex> effect_slot_lock{context.mEffectSlotLock};
1775
1776     auto& device = *context.mALDevice;
1777
1778     if (context.mNumEffectSlots == device.AuxiliaryEffectSlotMax)
1779     {
1780         ERR(EAX_PREFIX "%s\n", "Out of memory.");
1781         return nullptr;
1782     }
1783
1784     if (!EnsureEffectSlots(&context, 1))
1785     {
1786         ERR(EAX_PREFIX "%s\n", "Failed to ensure.");
1787         return nullptr;
1788     }
1789
1790     auto effect_slot = EaxAlEffectSlotUPtr{AllocEffectSlot(&context)};
1791     if (!effect_slot)
1792     {
1793         ERR(EAX_PREFIX "%s\n", "Failed to allocate.");
1794         return nullptr;
1795     }
1796
1797     return effect_slot;
1798
1799 #undef EAX_PREFIX
1800 }
1801
1802 void eax_delete_al_effect_slot(
1803     ALCcontext& context,
1804     ALeffectslot& effect_slot)
1805 {
1806 #define EAX_PREFIX "[EAX_DELETE_EFFECT_SLOT] "
1807
1808     std::lock_guard<std::mutex> effect_slot_lock{context.mEffectSlotLock};
1809
1810     if (ReadRef(effect_slot.ref) != 0)
1811     {
1812         ERR(EAX_PREFIX "Deleting in-use effect slot %u.\n", effect_slot.id);
1813         return;
1814     }
1815
1816     auto effect_slot_ptr = &effect_slot;
1817
1818     RemoveActiveEffectSlots({&effect_slot_ptr, 1}, &context);
1819     FreeEffectSlot(&context, &effect_slot);
1820
1821 #undef EAX_PREFIX
1822 }
1823 #endif // ALSOFT_EAX