al/filter.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 "filter.h"
  24
  25 #include <algorithm>
  26 #include <cstdarg>
  27 #include <cstdint>
  28 #include <cstdio>
  29 #include <iterator>
  30 #include <memory>
  31 #include <mutex>
  32 #include <numeric>
  33 #include <string>
  34 #include <unordered_map>
  35 #include <vector>
  36
  37 #include "AL/al.h"
  38 #include "AL/alc.h"
  39 #include "AL/efx.h"
  40
  41 #include "albit.h"
  42 #include "alc/context.h"
  43 #include "alc/device.h"
  44 #include "alc/inprogext.h"
  45 #include "almalloc.h"
  46 #include "alnumeric.h"
  47 #include "alspan.h"
  48 #include "direct_defs.h"
  49 #include "error.h"
  50 #include "intrusive_ptr.h"
  51 #include "opthelpers.h"
  52
  53
  54 namespace {
  55
  56 using SubListAllocator = al::allocator<std::array<ALfilter,64>>;
  57
  58
  59 void InitFilterParams(ALfilter *filter, ALenum type)
  60 {
  61     if(type == AL_FILTER_LOWPASS)
  62     {
  63         filter->Gain = AL_LOWPASS_DEFAULT_GAIN;
  64         filter->GainHF = AL_LOWPASS_DEFAULT_GAINHF;
  65         filter->HFReference = LowPassFreqRef;
  66         filter->GainLF = 1.0f;
  67         filter->LFReference = HighPassFreqRef;
  68         filter->mTypeVariant.emplace<LowpassFilterTable>();
  69     }
  70     else if(type == AL_FILTER_HIGHPASS)
  71     {
  72         filter->Gain = AL_HIGHPASS_DEFAULT_GAIN;
  73         filter->GainHF = 1.0f;
  74         filter->HFReference = LowPassFreqRef;
  75         filter->GainLF = AL_HIGHPASS_DEFAULT_GAINLF;
  76         filter->LFReference = HighPassFreqRef;
  77         filter->mTypeVariant.emplace<HighpassFilterTable>();
  78     }
  79     else if(type == AL_FILTER_BANDPASS)
  80     {
  81         filter->Gain = AL_BANDPASS_DEFAULT_GAIN;
  82         filter->GainHF = AL_BANDPASS_DEFAULT_GAINHF;
  83         filter->HFReference = LowPassFreqRef;
  84         filter->GainLF = AL_BANDPASS_DEFAULT_GAINLF;
  85         filter->LFReference = HighPassFreqRef;
  86         filter->mTypeVariant.emplace<BandpassFilterTable>();
  87     }
  88     else
  89     {
  90         filter->Gain = 1.0f;
  91         filter->GainHF = 1.0f;
  92         filter->HFReference = LowPassFreqRef;
  93         filter->GainLF = 1.0f;
  94         filter->LFReference = HighPassFreqRef;
  95         filter->mTypeVariant.emplace<NullFilterTable>();
  96     }
  97     filter->type = type;
  98 }
  99
 100 auto EnsureFilters(ALCdevice *device, size_t needed) noexcept -> bool
 101 try {
 102     size_t count{std::accumulate(device->FilterList.cbegin(), device->FilterList.cend(), 0_uz,
 103         [](size_t cur, const FilterSubList &sublist) noexcept -> size_t
 104         { return cur + static_cast<ALuint>(al::popcount(sublist.FreeMask)); })};
 105
 106     while(needed > count)
 107     {
 108         if(device->FilterList.size() >= 1<<25) UNLIKELY
 109             return false;
 110
 111         FilterSubList sublist{};
 112         sublist.FreeMask = ~0_u64;
 113         sublist.Filters = SubListAllocator{}.allocate(1);
 114         device->FilterList.emplace_back(std::move(sublist));
 115         count += std::tuple_size_v<SubListAllocator::value_type>;
 116     }
 117     return true;
 118 }
 119 catch(...) {
 120     return false;
 121 }
 122
 123
 124 ALfilter *AllocFilter(ALCdevice *device) noexcept
 125 {
 126     auto sublist = std::find_if(device->FilterList.begin(), device->FilterList.end(),
 127         [](const FilterSubList &entry) noexcept -> bool
 128         { return entry.FreeMask != 0; });
 129     auto lidx = static_cast<ALuint>(std::distance(device->FilterList.begin(), sublist));
 130     auto slidx = static_cast<ALuint>(al::countr_zero(sublist->FreeMask));
 131     ASSUME(slidx < 64);
 132
 133     ALfilter *filter{al::construct_at(al::to_address(sublist->Filters->begin() + slidx))};
 134     InitFilterParams(filter, AL_FILTER_NULL);
 135
 136     /* Add 1 to avoid filter ID 0. */
 137     filter->id = ((lidx<<6) | slidx) + 1;
 138
 139     sublist->FreeMask &= ~(1_u64 << slidx);
 140
 141     return filter;
 142 }
 143
 144 void FreeFilter(ALCdevice *device, ALfilter *filter)
 145 {
 146     device->mFilterNames.erase(filter->id);
 147
 148     const ALuint id{filter->id - 1};
 149     const size_t lidx{id >> 6};
 150     const ALuint slidx{id & 0x3f};
 151
 152     std::destroy_at(filter);
 153
 154     device->FilterList[lidx].FreeMask |= 1_u64 << slidx;
 155 }
 156
 157
 158 inline auto LookupFilter(ALCdevice *device, ALuint id) noexcept -> ALfilter*
 159 {
 160     const size_t lidx{(id-1) >> 6};
 161     const ALuint slidx{(id-1) & 0x3f};
 162
 163     if(lidx >= device->FilterList.size()) UNLIKELY
 164         return nullptr;
 165     FilterSubList &sublist = device->FilterList[lidx];
 166     if(sublist.FreeMask & (1_u64 << slidx)) UNLIKELY
 167         return nullptr;
 168     return al::to_address(sublist.Filters->begin() + slidx);
 169 }
 170
 171 } // namespace
 172
 173 /* Null filter parameter handlers */
 174 template<>
 175 void FilterTable<NullFilterTable>::setParami(ALfilter*, ALenum param, int)
 176 { throw al::context_error{AL_INVALID_ENUM, "Invalid null filter property 0x%04x", param}; }
 177 template<>
 178 void FilterTable<NullFilterTable>::setParamiv(ALfilter*, ALenum param, const int*)
 179 { throw al::context_error{AL_INVALID_ENUM, "Invalid null filter property 0x%04x", param}; }
 180 template<>
 181 void FilterTable<NullFilterTable>::setParamf(ALfilter*, ALenum param, float)
 182 { throw al::context_error{AL_INVALID_ENUM, "Invalid null filter property 0x%04x", param}; }
 183 template<>
 184 void FilterTable<NullFilterTable>::setParamfv(ALfilter*, ALenum param, const float*)
 185 { throw al::context_error{AL_INVALID_ENUM, "Invalid null filter property 0x%04x", param}; }
 186 template<>
 187 void FilterTable<NullFilterTable>::getParami(const ALfilter*, ALenum param, int*)
 188 { throw al::context_error{AL_INVALID_ENUM, "Invalid null filter property 0x%04x", param}; }
 189 template<>
 190 void FilterTable<NullFilterTable>::getParamiv(const ALfilter*, ALenum param, int*)
 191 { throw al::context_error{AL_INVALID_ENUM, "Invalid null filter property 0x%04x", param}; }
 192 template<>
 193 void FilterTable<NullFilterTable>::getParamf(const ALfilter*, ALenum param, float*)
 194 { throw al::context_error{AL_INVALID_ENUM, "Invalid null filter property 0x%04x", param}; }
 195 template<>
 196 void FilterTable<NullFilterTable>::getParamfv(const ALfilter*, ALenum param, float*)
 197 { throw al::context_error{AL_INVALID_ENUM, "Invalid null filter property 0x%04x", param}; }
 198
 199 /* Lowpass parameter handlers */
 200 template<>
 201 void FilterTable<LowpassFilterTable>::setParami(ALfilter*, ALenum param, int)
 202 { throw al::context_error{AL_INVALID_ENUM, "Invalid low-pass integer property 0x%04x", param}; }
 203 template<>
 204 void FilterTable<LowpassFilterTable>::setParamiv(ALfilter *filter, ALenum param, const int *values)
 205 { setParami(filter, param, *values); }
 206 template<>
 207 void FilterTable<LowpassFilterTable>::setParamf(ALfilter *filter, ALenum param, float val)
 208 {
 209     switch(param)
 210     {
 211     case AL_LOWPASS_GAIN:
 212         if(!(val >= AL_LOWPASS_MIN_GAIN && val <= AL_LOWPASS_MAX_GAIN))
 213             throw al::context_error{AL_INVALID_VALUE, "Low-pass gain %f out of range", val};
 214         filter->Gain = val;
 215         return;
 216
 217     case AL_LOWPASS_GAINHF:
 218         if(!(val >= AL_LOWPASS_MIN_GAINHF && val <= AL_LOWPASS_MAX_GAINHF))
 219             throw al::context_error{AL_INVALID_VALUE, "Low-pass gainhf %f out of range", val};
 220         filter->GainHF = val;
 221         return;
 222     }
 223     throw al::context_error{AL_INVALID_ENUM, "Invalid low-pass float property 0x%04x", param};
 224 }
 225 template<>
 226 void FilterTable<LowpassFilterTable>::setParamfv(ALfilter *filter, ALenum param, const float *vals)
 227 { setParamf(filter, param, *vals); }
 228 template<>
 229 void FilterTable<LowpassFilterTable>::getParami(const ALfilter*, ALenum param, int*)
 230 { throw al::context_error{AL_INVALID_ENUM, "Invalid low-pass integer property 0x%04x", param}; }
 231 template<>
 232 void FilterTable<LowpassFilterTable>::getParamiv(const ALfilter *filter, ALenum param, int *values)
 233 { getParami(filter, param, values); }
 234 template<>
 235 void FilterTable<LowpassFilterTable>::getParamf(const ALfilter *filter, ALenum param, float *val)
 236 {
 237     switch(param)
 238     {
 239     case AL_LOWPASS_GAIN: *val = filter->Gain; return;
 240     case AL_LOWPASS_GAINHF: *val = filter->GainHF; return;
 241     }
 242     throw al::context_error{AL_INVALID_ENUM, "Invalid low-pass float property 0x%04x", param};
 243 }
 244 template<>
 245 void FilterTable<LowpassFilterTable>::getParamfv(const ALfilter *filter, ALenum param, float *vals)
 246 { getParamf(filter, param, vals); }
 247
 248 /* Highpass parameter handlers */
 249 template<>
 250 void FilterTable<HighpassFilterTable>::setParami(ALfilter*, ALenum param, int)
 251 { throw al::context_error{AL_INVALID_ENUM, "Invalid high-pass integer property 0x%04x", param}; }
 252 template<>
 253 void FilterTable<HighpassFilterTable>::setParamiv(ALfilter *filter, ALenum param, const int *values)
 254 { setParami(filter, param, *values); }
 255 template<>
 256 void FilterTable<HighpassFilterTable>::setParamf(ALfilter *filter, ALenum param, float val)
 257 {
 258     switch(param)
 259     {
 260     case AL_HIGHPASS_GAIN:
 261         if(!(val >= AL_HIGHPASS_MIN_GAIN && val <= AL_HIGHPASS_MAX_GAIN))
 262             throw al::context_error{AL_INVALID_VALUE, "High-pass gain %f out of range", val};
 263         filter->Gain = val;
 264         return;
 265
 266     case AL_HIGHPASS_GAINLF:
 267         if(!(val >= AL_HIGHPASS_MIN_GAINLF && val <= AL_HIGHPASS_MAX_GAINLF))
 268             throw al::context_error{AL_INVALID_VALUE, "High-pass gainlf %f out of range", val};
 269         filter->GainLF = val;
 270         return;
 271     }
 272     throw al::context_error{AL_INVALID_ENUM, "Invalid high-pass float property 0x%04x", param};
 273 }
 274 template<>
 275 void FilterTable<HighpassFilterTable>::setParamfv(ALfilter *filter, ALenum param, const float *vals)
 276 { setParamf(filter, param, *vals); }
 277 template<>
 278 void FilterTable<HighpassFilterTable>::getParami(const ALfilter*, ALenum param, int*)
 279 { throw al::context_error{AL_INVALID_ENUM, "Invalid high-pass integer property 0x%04x", param}; }
 280 template<>
 281 void FilterTable<HighpassFilterTable>::getParamiv(const ALfilter *filter, ALenum param, int *values)
 282 { getParami(filter, param, values); }
 283 template<>
 284 void FilterTable<HighpassFilterTable>::getParamf(const ALfilter *filter, ALenum param, float *val)
 285 {
 286     switch(param)
 287     {
 288     case AL_HIGHPASS_GAIN: *val = filter->Gain; return;
 289     case AL_HIGHPASS_GAINLF: *val = filter->GainLF; return;
 290     }
 291     throw al::context_error{AL_INVALID_ENUM, "Invalid high-pass float property 0x%04x", param};
 292 }
 293 template<>
 294 void FilterTable<HighpassFilterTable>::getParamfv(const ALfilter *filter, ALenum param, float *vals)
 295 { getParamf(filter, param, vals); }
 296
 297 /* Bandpass parameter handlers */
 298 template<>
 299 void FilterTable<BandpassFilterTable>::setParami(ALfilter*, ALenum param, int)
 300 { throw al::context_error{AL_INVALID_ENUM, "Invalid band-pass integer property 0x%04x", param}; }
 301 template<>
 302 void FilterTable<BandpassFilterTable>::setParamiv(ALfilter *filter, ALenum param, const int *values)
 303 { setParami(filter, param, *values); }
 304 template<>
 305 void FilterTable<BandpassFilterTable>::setParamf(ALfilter *filter, ALenum param, float val)
 306 {
 307     switch(param)
 308     {
 309     case AL_BANDPASS_GAIN:
 310         if(!(val >= AL_BANDPASS_MIN_GAIN && val <= AL_BANDPASS_MAX_GAIN))
 311             throw al::context_error{AL_INVALID_VALUE, "Band-pass gain %f out of range", val};
 312         filter->Gain = val;
 313         return;
 314
 315     case AL_BANDPASS_GAINHF:
 316         if(!(val >= AL_BANDPASS_MIN_GAINHF && val <= AL_BANDPASS_MAX_GAINHF))
 317             throw al::context_error{AL_INVALID_VALUE, "Band-pass gainhf %f out of range", val};
 318         filter->GainHF = val;
 319         return;
 320
 321     case AL_BANDPASS_GAINLF:
 322         if(!(val >= AL_BANDPASS_MIN_GAINLF && val <= AL_BANDPASS_MAX_GAINLF))
 323             throw al::context_error{AL_INVALID_VALUE, "Band-pass gainlf %f out of range", val};
 324         filter->GainLF = val;
 325         return;
 326     }
 327     throw al::context_error{AL_INVALID_ENUM, "Invalid band-pass float property 0x%04x", param};
 328 }
 329 template<>
 330 void FilterTable<BandpassFilterTable>::setParamfv(ALfilter *filter, ALenum param, const float *vals)
 331 { setParamf(filter, param, *vals); }
 332 template<>
 333 void FilterTable<BandpassFilterTable>::getParami(const ALfilter*, ALenum param, int*)
 334 { throw al::context_error{AL_INVALID_ENUM, "Invalid band-pass integer property 0x%04x", param}; }
 335 template<>
 336 void FilterTable<BandpassFilterTable>::getParamiv(const ALfilter *filter, ALenum param, int *values)
 337 { getParami(filter, param, values); }
 338 template<>
 339 void FilterTable<BandpassFilterTable>::getParamf(const ALfilter *filter, ALenum param, float *val)
 340 {
 341     switch(param)
 342     {
 343     case AL_BANDPASS_GAIN: *val = filter->Gain; return;
 344     case AL_BANDPASS_GAINHF: *val = filter->GainHF; return;
 345     case AL_BANDPASS_GAINLF: *val = filter->GainLF; return;
 346     }
 347     throw al::context_error{AL_INVALID_ENUM, "Invalid band-pass float property 0x%04x", param};
 348 }
 349 template<>
 350 void FilterTable<BandpassFilterTable>::getParamfv(const ALfilter *filter, ALenum param, float *vals)
 351 { getParamf(filter, param, vals); }
 352
 353
 354 AL_API DECL_FUNC2(void, alGenFilters, ALsizei,n, ALuint*,filters)
 355 FORCE_ALIGN void AL_APIENTRY alGenFiltersDirect(ALCcontext *context, ALsizei n, ALuint *filters) noexcept
 356 try {
 357     if(n < 0)
 358         throw al::context_error{AL_INVALID_VALUE, "Generating %d filters", n};
 359     if(n <= 0) UNLIKELY return;
 360
 361     ALCdevice *device{context->mALDevice.get()};
 362     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 363
 364     const al::span fids{filters, static_cast<ALuint>(n)};
 365     if(!EnsureFilters(device, fids.size()))
 366         throw al::context_error{AL_OUT_OF_MEMORY, "Failed to allocate %d filter%s", n,
 367             (n == 1) ? "" : "s"};
 368
 369     std::generate(fids.begin(), fids.end(), [device]{ return AllocFilter(device)->id; });
 370 }
 371 catch(al::context_error& e) {
 372     context->setError(e.errorCode(), "%s", e.what());
 373 }
 374
 375 AL_API DECL_FUNC2(void, alDeleteFilters, ALsizei,n, const ALuint*,filters)
 376 FORCE_ALIGN void AL_APIENTRY alDeleteFiltersDirect(ALCcontext *context, ALsizei n,
 377     const ALuint *filters) noexcept
 378 try {
 379     if(n < 0)
 380         throw al::context_error{AL_INVALID_VALUE, "Deleting %d filters", n};
 381     if(n <= 0) UNLIKELY return;
 382
 383     ALCdevice *device{context->mALDevice.get()};
 384     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 385
 386     /* First try to find any filters that are invalid. */
 387     auto validate_filter = [device](const ALuint fid) -> bool
 388     { return !fid || LookupFilter(device, fid) != nullptr; };
 389
 390     const al::span fids{filters, static_cast<ALuint>(n)};
 391     auto invflt = std::find_if_not(fids.begin(), fids.end(), validate_filter);
 392     if(invflt != fids.end())
 393         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", *invflt};
 394
 395     /* All good. Delete non-0 filter IDs. */
 396     auto delete_filter = [device](const ALuint fid) -> void
 397     {
 398         if(ALfilter *filter{fid ? LookupFilter(device, fid) : nullptr})
 399             FreeFilter(device, filter);
 400     };
 401     std::for_each(fids.begin(), fids.end(), delete_filter);
 402 }
 403 catch(al::context_error& e) {
 404     context->setError(e.errorCode(), "%s", e.what());
 405 }
 406
 407 AL_API DECL_FUNC1(ALboolean, alIsFilter, ALuint,filter)
 408 FORCE_ALIGN ALboolean AL_APIENTRY alIsFilterDirect(ALCcontext *context, ALuint filter) noexcept
 409 {
 410     ALCdevice *device{context->mALDevice.get()};
 411     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 412     if(!filter || LookupFilter(device, filter))
 413         return AL_TRUE;
 414     return AL_FALSE;
 415 }
 416
 417
 418 AL_API DECL_FUNC3(void, alFilteri, ALuint,filter, ALenum,param, ALint,value)
 419 FORCE_ALIGN void AL_APIENTRY alFilteriDirect(ALCcontext *context, ALuint filter, ALenum param,
 420     ALint value) noexcept
 421 try {
 422     ALCdevice *device{context->mALDevice.get()};
 423     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 424
 425     ALfilter *alfilt{LookupFilter(device, filter)};
 426     if(!alfilt)
 427         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", filter};
 428
 429     switch(param)
 430     {
 431     case AL_FILTER_TYPE:
 432         if(!(value == AL_FILTER_NULL || value == AL_FILTER_LOWPASS
 433             || value == AL_FILTER_HIGHPASS || value == AL_FILTER_BANDPASS))
 434             throw al::context_error{AL_INVALID_VALUE, "Invalid filter type 0x%04x", value};
 435         InitFilterParams(alfilt, value);
 436         return;
 437     }
 438
 439     /* Call the appropriate handler */
 440     std::visit([alfilt,param,value](auto&& thunk){thunk.setParami(alfilt, param, value);},
 441         alfilt->mTypeVariant);
 442 }
 443 catch(al::context_error& e) {
 444     context->setError(e.errorCode(), "%s", e.what());
 445 }
 446
 447 AL_API DECL_FUNC3(void, alFilteriv, ALuint,filter, ALenum,param, const ALint*,values)
 448 FORCE_ALIGN void AL_APIENTRY alFilterivDirect(ALCcontext *context, ALuint filter, ALenum param,
 449     const ALint *values) noexcept
 450 try {
 451     switch(param)
 452     {
 453     case AL_FILTER_TYPE:
 454         alFilteriDirect(context, filter, param, *values);
 455         return;
 456     }
 457
 458     ALCdevice *device{context->mALDevice.get()};
 459     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 460
 461     ALfilter *alfilt{LookupFilter(device, filter)};
 462     if(!alfilt)
 463         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", filter};
 464
 465     /* Call the appropriate handler */
 466     std::visit([alfilt,param,values](auto&& thunk){thunk.setParamiv(alfilt, param, values);},
 467         alfilt->mTypeVariant);
 468 }
 469 catch(al::context_error& e) {
 470     context->setError(e.errorCode(), "%s", e.what());
 471 }
 472
 473 AL_API DECL_FUNC3(void, alFilterf, ALuint,filter, ALenum,param, ALfloat,value)
 474 FORCE_ALIGN void AL_APIENTRY alFilterfDirect(ALCcontext *context, ALuint filter, ALenum param,
 475     ALfloat value) noexcept
 476 try {
 477     ALCdevice *device{context->mALDevice.get()};
 478     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 479
 480     ALfilter *alfilt{LookupFilter(device, filter)};
 481     if(!alfilt)
 482         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", filter};
 483
 484     /* Call the appropriate handler */
 485     std::visit([alfilt,param,value](auto&& thunk){thunk.setParamf(alfilt, param, value);},
 486         alfilt->mTypeVariant);
 487 }
 488 catch(al::context_error& e) {
 489     context->setError(e.errorCode(), "%s", e.what());
 490 }
 491
 492 AL_API DECL_FUNC3(void, alFilterfv, ALuint,filter, ALenum,param, const ALfloat*,values)
 493 FORCE_ALIGN void AL_APIENTRY alFilterfvDirect(ALCcontext *context, ALuint filter, ALenum param,
 494     const ALfloat *values) noexcept
 495 try {
 496     ALCdevice *device{context->mALDevice.get()};
 497     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 498
 499     ALfilter *alfilt{LookupFilter(device, filter)};
 500     if(!alfilt)
 501         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", filter};
 502
 503     /* Call the appropriate handler */
 504     std::visit([alfilt,param,values](auto&& thunk){thunk.setParamfv(alfilt, param, values);},
 505         alfilt->mTypeVariant);
 506 }
 507 catch(al::context_error& e) {
 508     context->setError(e.errorCode(), "%s", e.what());
 509 }
 510
 511 AL_API DECL_FUNC3(void, alGetFilteri, ALuint,filter, ALenum,param, ALint*,value)
 512 FORCE_ALIGN void AL_APIENTRY alGetFilteriDirect(ALCcontext *context, ALuint filter, ALenum param,
 513     ALint *value) noexcept
 514 try {
 515     ALCdevice *device{context->mALDevice.get()};
 516     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 517
 518     const ALfilter *alfilt{LookupFilter(device, filter)};
 519     if(!alfilt)
 520         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", filter};
 521
 522     switch(param)
 523     {
 524     case AL_FILTER_TYPE:
 525         *value = alfilt->type;
 526         return;
 527     }
 528
 529     /* Call the appropriate handler */
 530     std::visit([alfilt,param,value](auto&& thunk){thunk.getParami(alfilt, param, value);},
 531         alfilt->mTypeVariant);
 532 }
 533 catch(al::context_error& e) {
 534     context->setError(e.errorCode(), "%s", e.what());
 535 }
 536
 537 AL_API DECL_FUNC3(void, alGetFilteriv, ALuint,filter, ALenum,param, ALint*,values)
 538 FORCE_ALIGN void AL_APIENTRY alGetFilterivDirect(ALCcontext *context, ALuint filter, ALenum param,
 539     ALint *values) noexcept
 540 try {
 541     switch(param)
 542     {
 543     case AL_FILTER_TYPE:
 544         alGetFilteriDirect(context, filter, param, values);
 545         return;
 546     }
 547
 548     ALCdevice *device{context->mALDevice.get()};
 549     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 550
 551     const ALfilter *alfilt{LookupFilter(device, filter)};
 552     if(!alfilt)
 553         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", filter};
 554
 555     /* Call the appropriate handler */
 556     std::visit([alfilt,param,values](auto&& thunk){thunk.getParamiv(alfilt, param, values);},
 557         alfilt->mTypeVariant);
 558 }
 559 catch(al::context_error& e) {
 560     context->setError(e.errorCode(), "%s", e.what());
 561 }
 562
 563 AL_API DECL_FUNC3(void, alGetFilterf, ALuint,filter, ALenum,param, ALfloat*,value)
 564 FORCE_ALIGN void AL_APIENTRY alGetFilterfDirect(ALCcontext *context, ALuint filter, ALenum param,
 565     ALfloat *value) noexcept
 566 try {
 567     ALCdevice *device{context->mALDevice.get()};
 568     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 569
 570     const ALfilter *alfilt{LookupFilter(device, filter)};
 571     if(!alfilt) UNLIKELY
 572         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", filter};
 573
 574     /* Call the appropriate handler */
 575     std::visit([alfilt,param,value](auto&& thunk){thunk.getParamf(alfilt, param, value);},
 576         alfilt->mTypeVariant);
 577 }
 578 catch(al::context_error& e) {
 579     context->setError(e.errorCode(), "%s", e.what());
 580 }
 581
 582 AL_API DECL_FUNC3(void, alGetFilterfv, ALuint,filter, ALenum,param, ALfloat*,values)
 583 FORCE_ALIGN void AL_APIENTRY alGetFilterfvDirect(ALCcontext *context, ALuint filter, ALenum param,
 584     ALfloat *values) noexcept
 585 try {
 586     ALCdevice *device{context->mALDevice.get()};
 587     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 588
 589     const ALfilter *alfilt{LookupFilter(device, filter)};
 590     if(!alfilt) UNLIKELY
 591         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", filter};
 592
 593     /* Call the appropriate handler */
 594     std::visit([alfilt,param,values](auto&& thunk){thunk.getParamfv(alfilt, param, values);},
 595         alfilt->mTypeVariant);
 596 }
 597 catch(al::context_error& e) {
 598     context->setError(e.errorCode(), "%s", e.what());
 599 }
 600
 601
 602 void ALfilter::SetName(ALCcontext *context, ALuint id, std::string_view name)
 603 {
 604     ALCdevice *device{context->mALDevice.get()};
 605     std::lock_guard<std::mutex> filterlock{device->FilterLock};
 606
 607     auto filter = LookupFilter(device, id);
 608     if(!filter)
 609         throw al::context_error{AL_INVALID_NAME, "Invalid filter ID %u", id};
 610
 611     device->mFilterNames.insert_or_assign(id, name);
 612 }
 613
 614
 615 FilterSubList::~FilterSubList()
 616 {
 617     if(!Filters)
 618         return;
 619
 620     uint64_t usemask{~FreeMask};
 621     while(usemask)
 622     {
 623         const int idx{al::countr_zero(usemask)};
 624         std::destroy_at(al::to_address(Filters->begin() + idx));
 625         usemask &= ~(1_u64 << idx);
 626     }
 627     FreeMask = ~usemask;
 628     SubListAllocator{}.deallocate(Filters, 1);
 629     Filters = nullptr;
 630 }