Alc/ALc.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.,
  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 <math.h>
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <memory.h>
  27 #include <ctype.h>
  28 #include <signal.h>
  29
  30 #include "alMain.h"
  31 #include "alSource.h"
  32 #include "alListener.h"
  33 #include "alThunk.h"
  34 #include "alSource.h"
  35 #include "alBuffer.h"
  36 #include "alAuxEffectSlot.h"
  37 #include "alError.h"
  38 #include "bformatdec.h"
  39 #include "alu.h"
  40
  41 #include "compat.h"
  42 #include "threads.h"
  43 #include "alstring.h"
  44 #include "almalloc.h"
  45
  46 #include "backends/base.h"
  47
  48
  49 /************************************************
  50  * Backends
  51  ************************************************/
  52 struct BackendInfo {
  53     const char *name;
  54     ALCbackendFactory* (*getFactory)(void);
  55     ALCboolean (*Init)(BackendFuncs*);
  56     void (*Deinit)(void);
  57     void (*Probe)(enum DevProbe);
  58     BackendFuncs Funcs;
  59 };
  60
  61 #define EmptyFuncs { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
  62 static struct BackendInfo BackendList[] = {
  63 #ifdef HAVE_JACK
  64     { "jack", ALCjackBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  65 #endif
  66 #ifdef HAVE_PULSEAUDIO
  67     { "pulse", ALCpulseBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  68 #endif
  69 #ifdef HAVE_ALSA
  70     { "alsa", ALCalsaBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  71 #endif
  72 #ifdef HAVE_COREAUDIO
  73     { "core", NULL, alc_ca_init, alc_ca_deinit, alc_ca_probe, EmptyFuncs },
  74 #endif
  75 #ifdef HAVE_OSS
  76     { "oss", ALCossBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  77 #endif
  78 #ifdef HAVE_SOLARIS
  79     { "solaris", ALCsolarisBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  80 #endif
  81 #ifdef HAVE_SNDIO
  82     { "sndio", NULL, alc_sndio_init, alc_sndio_deinit, alc_sndio_probe, EmptyFuncs },
  83 #endif
  84 #ifdef HAVE_QSA
  85     { "qsa", NULL, alc_qsa_init, alc_qsa_deinit, alc_qsa_probe, EmptyFuncs },
  86 #endif
  87 #ifdef HAVE_MMDEVAPI
  88     { "mmdevapi", ALCmmdevBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  89 #endif
  90 #ifdef HAVE_DSOUND
  91     { "dsound", ALCdsoundBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  92 #endif
  93 #ifdef HAVE_WINMM
  94     { "winmm", ALCwinmmBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  95 #endif
  96 #ifdef HAVE_PORTAUDIO
  97     { "port", ALCportBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  98 #endif
  99 #ifdef HAVE_OPENSL
 100     { "opensl", NULL, alc_opensl_init, alc_opensl_deinit, alc_opensl_probe, EmptyFuncs },
 101 #endif
 102
 103     { "null", ALCnullBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
 104 #ifdef HAVE_WAVE
 105     { "wave", ALCwaveBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
 106 #endif
 107
 108     { NULL, NULL, NULL, NULL, NULL, EmptyFuncs }
 109 };
 110 #undef EmptyFuncs
 111
 112 static struct BackendInfo PlaybackBackend;
 113 static struct BackendInfo CaptureBackend;
 114
 115
 116 /************************************************
 117  * Functions, enums, and errors
 118  ************************************************/
 119 typedef struct ALCfunction {
 120     const ALCchar *funcName;
 121     ALCvoid *address;
 122 } ALCfunction;
 123
 124 typedef struct ALCenums {
 125     const ALCchar *enumName;
 126     ALCenum value;
 127 } ALCenums;
 128
 129 #define DECL(x) { #x, (ALCvoid*)(x) }
 130 static const ALCfunction alcFunctions[] = {
 131     DECL(alcCreateContext),
 132     DECL(alcMakeContextCurrent),
 133     DECL(alcProcessContext),
 134     DECL(alcSuspendContext),
 135     DECL(alcDestroyContext),
 136     DECL(alcGetCurrentContext),
 137     DECL(alcGetContextsDevice),
 138     DECL(alcOpenDevice),
 139     DECL(alcCloseDevice),
 140     DECL(alcGetError),
 141     DECL(alcIsExtensionPresent),
 142     DECL(alcGetProcAddress),
 143     DECL(alcGetEnumValue),
 144     DECL(alcGetString),
 145     DECL(alcGetIntegerv),
 146     DECL(alcCaptureOpenDevice),
 147     DECL(alcCaptureCloseDevice),
 148     DECL(alcCaptureStart),
 149     DECL(alcCaptureStop),
 150     DECL(alcCaptureSamples),
 151
 152     DECL(alcSetThreadContext),
 153     DECL(alcGetThreadContext),
 154
 155     DECL(alcLoopbackOpenDeviceSOFT),
 156     DECL(alcIsRenderFormatSupportedSOFT),
 157     DECL(alcRenderSamplesSOFT),
 158
 159     DECL(alcDevicePauseSOFT),
 160     DECL(alcDeviceResumeSOFT),
 161
 162     DECL(alcGetStringiSOFT),
 163     DECL(alcResetDeviceSOFT),
 164
 165     DECL(alcGetInteger64vSOFT),
 166
 167     DECL(alEnable),
 168     DECL(alDisable),
 169     DECL(alIsEnabled),
 170     DECL(alGetString),
 171     DECL(alGetBooleanv),
 172     DECL(alGetIntegerv),
 173     DECL(alGetFloatv),
 174     DECL(alGetDoublev),
 175     DECL(alGetBoolean),
 176     DECL(alGetInteger),
 177     DECL(alGetFloat),
 178     DECL(alGetDouble),
 179     DECL(alGetError),
 180     DECL(alIsExtensionPresent),
 181     DECL(alGetProcAddress),
 182     DECL(alGetEnumValue),
 183     DECL(alListenerf),
 184     DECL(alListener3f),
 185     DECL(alListenerfv),
 186     DECL(alListeneri),
 187     DECL(alListener3i),
 188     DECL(alListeneriv),
 189     DECL(alGetListenerf),
 190     DECL(alGetListener3f),
 191     DECL(alGetListenerfv),
 192     DECL(alGetListeneri),
 193     DECL(alGetListener3i),
 194     DECL(alGetListeneriv),
 195     DECL(alGenSources),
 196     DECL(alDeleteSources),
 197     DECL(alIsSource),
 198     DECL(alSourcef),
 199     DECL(alSource3f),
 200     DECL(alSourcefv),
 201     DECL(alSourcei),
 202     DECL(alSource3i),
 203     DECL(alSourceiv),
 204     DECL(alGetSourcef),
 205     DECL(alGetSource3f),
 206     DECL(alGetSourcefv),
 207     DECL(alGetSourcei),
 208     DECL(alGetSource3i),
 209     DECL(alGetSourceiv),
 210     DECL(alSourcePlayv),
 211     DECL(alSourceStopv),
 212     DECL(alSourceRewindv),
 213     DECL(alSourcePausev),
 214     DECL(alSourcePlay),
 215     DECL(alSourceStop),
 216     DECL(alSourceRewind),
 217     DECL(alSourcePause),
 218     DECL(alSourceQueueBuffers),
 219     DECL(alSourceUnqueueBuffers),
 220     DECL(alGenBuffers),
 221     DECL(alDeleteBuffers),
 222     DECL(alIsBuffer),
 223     DECL(alBufferData),
 224     DECL(alBufferf),
 225     DECL(alBuffer3f),
 226     DECL(alBufferfv),
 227     DECL(alBufferi),
 228     DECL(alBuffer3i),
 229     DECL(alBufferiv),
 230     DECL(alGetBufferf),
 231     DECL(alGetBuffer3f),
 232     DECL(alGetBufferfv),
 233     DECL(alGetBufferi),
 234     DECL(alGetBuffer3i),
 235     DECL(alGetBufferiv),
 236     DECL(alDopplerFactor),
 237     DECL(alDopplerVelocity),
 238     DECL(alSpeedOfSound),
 239     DECL(alDistanceModel),
 240
 241     DECL(alGenFilters),
 242     DECL(alDeleteFilters),
 243     DECL(alIsFilter),
 244     DECL(alFilteri),
 245     DECL(alFilteriv),
 246     DECL(alFilterf),
 247     DECL(alFilterfv),
 248     DECL(alGetFilteri),
 249     DECL(alGetFilteriv),
 250     DECL(alGetFilterf),
 251     DECL(alGetFilterfv),
 252     DECL(alGenEffects),
 253     DECL(alDeleteEffects),
 254     DECL(alIsEffect),
 255     DECL(alEffecti),
 256     DECL(alEffectiv),
 257     DECL(alEffectf),
 258     DECL(alEffectfv),
 259     DECL(alGetEffecti),
 260     DECL(alGetEffectiv),
 261     DECL(alGetEffectf),
 262     DECL(alGetEffectfv),
 263     DECL(alGenAuxiliaryEffectSlots),
 264     DECL(alDeleteAuxiliaryEffectSlots),
 265     DECL(alIsAuxiliaryEffectSlot),
 266     DECL(alAuxiliaryEffectSloti),
 267     DECL(alAuxiliaryEffectSlotiv),
 268     DECL(alAuxiliaryEffectSlotf),
 269     DECL(alAuxiliaryEffectSlotfv),
 270     DECL(alGetAuxiliaryEffectSloti),
 271     DECL(alGetAuxiliaryEffectSlotiv),
 272     DECL(alGetAuxiliaryEffectSlotf),
 273     DECL(alGetAuxiliaryEffectSlotfv),
 274
 275     DECL(alDeferUpdatesSOFT),
 276     DECL(alProcessUpdatesSOFT),
 277
 278     DECL(alSourcedSOFT),
 279     DECL(alSource3dSOFT),
 280     DECL(alSourcedvSOFT),
 281     DECL(alGetSourcedSOFT),
 282     DECL(alGetSource3dSOFT),
 283     DECL(alGetSourcedvSOFT),
 284     DECL(alSourcei64SOFT),
 285     DECL(alSource3i64SOFT),
 286     DECL(alSourcei64vSOFT),
 287     DECL(alGetSourcei64SOFT),
 288     DECL(alGetSource3i64SOFT),
 289     DECL(alGetSourcei64vSOFT),
 290
 291     DECL(alBufferSamplesSOFT),
 292     DECL(alGetBufferSamplesSOFT),
 293     DECL(alIsBufferFormatSupportedSOFT),
 294
 295     { NULL, NULL }
 296 };
 297 #undef DECL
 298
 299 #define DECL(x) { #x, (x) }
 300 static const ALCenums enumeration[] = {
 301     DECL(ALC_INVALID),
 302     DECL(ALC_FALSE),
 303     DECL(ALC_TRUE),
 304
 305     DECL(ALC_MAJOR_VERSION),
 306     DECL(ALC_MINOR_VERSION),
 307     DECL(ALC_ATTRIBUTES_SIZE),
 308     DECL(ALC_ALL_ATTRIBUTES),
 309     DECL(ALC_DEFAULT_DEVICE_SPECIFIER),
 310     DECL(ALC_DEVICE_SPECIFIER),
 311     DECL(ALC_ALL_DEVICES_SPECIFIER),
 312     DECL(ALC_DEFAULT_ALL_DEVICES_SPECIFIER),
 313     DECL(ALC_EXTENSIONS),
 314     DECL(ALC_FREQUENCY),
 315     DECL(ALC_REFRESH),
 316     DECL(ALC_SYNC),
 317     DECL(ALC_MONO_SOURCES),
 318     DECL(ALC_STEREO_SOURCES),
 319     DECL(ALC_CAPTURE_DEVICE_SPECIFIER),
 320     DECL(ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER),
 321     DECL(ALC_CAPTURE_SAMPLES),
 322     DECL(ALC_CONNECTED),
 323
 324     DECL(ALC_EFX_MAJOR_VERSION),
 325     DECL(ALC_EFX_MINOR_VERSION),
 326     DECL(ALC_MAX_AUXILIARY_SENDS),
 327
 328     DECL(ALC_FORMAT_CHANNELS_SOFT),
 329     DECL(ALC_FORMAT_TYPE_SOFT),
 330
 331     DECL(ALC_MONO_SOFT),
 332     DECL(ALC_STEREO_SOFT),
 333     DECL(ALC_QUAD_SOFT),
 334     DECL(ALC_5POINT1_SOFT),
 335     DECL(ALC_6POINT1_SOFT),
 336     DECL(ALC_7POINT1_SOFT),
 337
 338     DECL(ALC_BYTE_SOFT),
 339     DECL(ALC_UNSIGNED_BYTE_SOFT),
 340     DECL(ALC_SHORT_SOFT),
 341     DECL(ALC_UNSIGNED_SHORT_SOFT),
 342     DECL(ALC_INT_SOFT),
 343     DECL(ALC_UNSIGNED_INT_SOFT),
 344     DECL(ALC_FLOAT_SOFT),
 345
 346     DECL(ALC_HRTF_SOFT),
 347     DECL(ALC_DONT_CARE_SOFT),
 348     DECL(ALC_HRTF_STATUS_SOFT),
 349     DECL(ALC_HRTF_DISABLED_SOFT),
 350     DECL(ALC_HRTF_ENABLED_SOFT),
 351     DECL(ALC_HRTF_DENIED_SOFT),
 352     DECL(ALC_HRTF_REQUIRED_SOFT),
 353     DECL(ALC_HRTF_HEADPHONES_DETECTED_SOFT),
 354     DECL(ALC_HRTF_UNSUPPORTED_FORMAT_SOFT),
 355     DECL(ALC_NUM_HRTF_SPECIFIERS_SOFT),
 356     DECL(ALC_HRTF_SPECIFIER_SOFT),
 357     DECL(ALC_HRTF_ID_SOFT),
 358
 359     DECL(ALC_NO_ERROR),
 360     DECL(ALC_INVALID_DEVICE),
 361     DECL(ALC_INVALID_CONTEXT),
 362     DECL(ALC_INVALID_ENUM),
 363     DECL(ALC_INVALID_VALUE),
 364     DECL(ALC_OUT_OF_MEMORY),
 365
 366
 367     DECL(AL_INVALID),
 368     DECL(AL_NONE),
 369     DECL(AL_FALSE),
 370     DECL(AL_TRUE),
 371
 372     DECL(AL_SOURCE_RELATIVE),
 373     DECL(AL_CONE_INNER_ANGLE),
 374     DECL(AL_CONE_OUTER_ANGLE),
 375     DECL(AL_PITCH),
 376     DECL(AL_POSITION),
 377     DECL(AL_DIRECTION),
 378     DECL(AL_VELOCITY),
 379     DECL(AL_LOOPING),
 380     DECL(AL_BUFFER),
 381     DECL(AL_GAIN),
 382     DECL(AL_MIN_GAIN),
 383     DECL(AL_MAX_GAIN),
 384     DECL(AL_ORIENTATION),
 385     DECL(AL_REFERENCE_DISTANCE),
 386     DECL(AL_ROLLOFF_FACTOR),
 387     DECL(AL_CONE_OUTER_GAIN),
 388     DECL(AL_MAX_DISTANCE),
 389     DECL(AL_SEC_OFFSET),
 390     DECL(AL_SAMPLE_OFFSET),
 391     DECL(AL_BYTE_OFFSET),
 392     DECL(AL_SOURCE_TYPE),
 393     DECL(AL_STATIC),
 394     DECL(AL_STREAMING),
 395     DECL(AL_UNDETERMINED),
 396     DECL(AL_METERS_PER_UNIT),
 397     DECL(AL_LOOP_POINTS_SOFT),
 398     DECL(AL_DIRECT_CHANNELS_SOFT),
 399
 400     DECL(AL_DIRECT_FILTER),
 401     DECL(AL_AUXILIARY_SEND_FILTER),
 402     DECL(AL_AIR_ABSORPTION_FACTOR),
 403     DECL(AL_ROOM_ROLLOFF_FACTOR),
 404     DECL(AL_CONE_OUTER_GAINHF),
 405     DECL(AL_DIRECT_FILTER_GAINHF_AUTO),
 406     DECL(AL_AUXILIARY_SEND_FILTER_GAIN_AUTO),
 407     DECL(AL_AUXILIARY_SEND_FILTER_GAINHF_AUTO),
 408
 409     DECL(AL_SOURCE_STATE),
 410     DECL(AL_INITIAL),
 411     DECL(AL_PLAYING),
 412     DECL(AL_PAUSED),
 413     DECL(AL_STOPPED),
 414
 415     DECL(AL_BUFFERS_QUEUED),
 416     DECL(AL_BUFFERS_PROCESSED),
 417
 418     DECL(AL_FORMAT_MONO8),
 419     DECL(AL_FORMAT_MONO16),
 420     DECL(AL_FORMAT_MONO_FLOAT32),
 421     DECL(AL_FORMAT_MONO_DOUBLE_EXT),
 422     DECL(AL_FORMAT_STEREO8),
 423     DECL(AL_FORMAT_STEREO16),
 424     DECL(AL_FORMAT_STEREO_FLOAT32),
 425     DECL(AL_FORMAT_STEREO_DOUBLE_EXT),
 426     DECL(AL_FORMAT_MONO_IMA4),
 427     DECL(AL_FORMAT_STEREO_IMA4),
 428     DECL(AL_FORMAT_MONO_MSADPCM_SOFT),
 429     DECL(AL_FORMAT_STEREO_MSADPCM_SOFT),
 430     DECL(AL_FORMAT_QUAD8_LOKI),
 431     DECL(AL_FORMAT_QUAD16_LOKI),
 432     DECL(AL_FORMAT_QUAD8),
 433     DECL(AL_FORMAT_QUAD16),
 434     DECL(AL_FORMAT_QUAD32),
 435     DECL(AL_FORMAT_51CHN8),
 436     DECL(AL_FORMAT_51CHN16),
 437     DECL(AL_FORMAT_51CHN32),
 438     DECL(AL_FORMAT_61CHN8),
 439     DECL(AL_FORMAT_61CHN16),
 440     DECL(AL_FORMAT_61CHN32),
 441     DECL(AL_FORMAT_71CHN8),
 442     DECL(AL_FORMAT_71CHN16),
 443     DECL(AL_FORMAT_71CHN32),
 444     DECL(AL_FORMAT_REAR8),
 445     DECL(AL_FORMAT_REAR16),
 446     DECL(AL_FORMAT_REAR32),
 447     DECL(AL_FORMAT_MONO_MULAW),
 448     DECL(AL_FORMAT_MONO_MULAW_EXT),
 449     DECL(AL_FORMAT_STEREO_MULAW),
 450     DECL(AL_FORMAT_STEREO_MULAW_EXT),
 451     DECL(AL_FORMAT_QUAD_MULAW),
 452     DECL(AL_FORMAT_51CHN_MULAW),
 453     DECL(AL_FORMAT_61CHN_MULAW),
 454     DECL(AL_FORMAT_71CHN_MULAW),
 455     DECL(AL_FORMAT_REAR_MULAW),
 456     DECL(AL_FORMAT_MONO_ALAW_EXT),
 457     DECL(AL_FORMAT_STEREO_ALAW_EXT),
 458
 459     DECL(AL_FORMAT_BFORMAT2D_8),
 460     DECL(AL_FORMAT_BFORMAT2D_16),
 461     DECL(AL_FORMAT_BFORMAT2D_FLOAT32),
 462     DECL(AL_FORMAT_BFORMAT2D_MULAW),
 463     DECL(AL_FORMAT_BFORMAT3D_8),
 464     DECL(AL_FORMAT_BFORMAT3D_16),
 465     DECL(AL_FORMAT_BFORMAT3D_FLOAT32),
 466     DECL(AL_FORMAT_BFORMAT3D_MULAW),
 467
 468     DECL(AL_MONO8_SOFT),
 469     DECL(AL_MONO16_SOFT),
 470     DECL(AL_MONO32F_SOFT),
 471     DECL(AL_STEREO8_SOFT),
 472     DECL(AL_STEREO16_SOFT),
 473     DECL(AL_STEREO32F_SOFT),
 474     DECL(AL_QUAD8_SOFT),
 475     DECL(AL_QUAD16_SOFT),
 476     DECL(AL_QUAD32F_SOFT),
 477     DECL(AL_REAR8_SOFT),
 478     DECL(AL_REAR16_SOFT),
 479     DECL(AL_REAR32F_SOFT),
 480     DECL(AL_5POINT1_8_SOFT),
 481     DECL(AL_5POINT1_16_SOFT),
 482     DECL(AL_5POINT1_32F_SOFT),
 483     DECL(AL_6POINT1_8_SOFT),
 484     DECL(AL_6POINT1_16_SOFT),
 485     DECL(AL_6POINT1_32F_SOFT),
 486     DECL(AL_7POINT1_8_SOFT),
 487     DECL(AL_7POINT1_16_SOFT),
 488     DECL(AL_7POINT1_32F_SOFT),
 489     DECL(AL_BFORMAT2D_8_SOFT),
 490     DECL(AL_BFORMAT2D_16_SOFT),
 491     DECL(AL_BFORMAT2D_32F_SOFT),
 492     DECL(AL_BFORMAT3D_8_SOFT),
 493     DECL(AL_BFORMAT3D_16_SOFT),
 494     DECL(AL_BFORMAT3D_32F_SOFT),
 495
 496     DECL(AL_MONO_SOFT),
 497     DECL(AL_STEREO_SOFT),
 498     DECL(AL_QUAD_SOFT),
 499     DECL(AL_REAR_SOFT),
 500     DECL(AL_5POINT1_SOFT),
 501     DECL(AL_6POINT1_SOFT),
 502     DECL(AL_7POINT1_SOFT),
 503     DECL(AL_BFORMAT2D_SOFT),
 504     DECL(AL_BFORMAT3D_SOFT),
 505
 506     DECL(AL_BYTE_SOFT),
 507     DECL(AL_UNSIGNED_BYTE_SOFT),
 508     DECL(AL_SHORT_SOFT),
 509     DECL(AL_UNSIGNED_SHORT_SOFT),
 510     DECL(AL_INT_SOFT),
 511     DECL(AL_UNSIGNED_INT_SOFT),
 512     DECL(AL_FLOAT_SOFT),
 513     DECL(AL_DOUBLE_SOFT),
 514     DECL(AL_BYTE3_SOFT),
 515     DECL(AL_UNSIGNED_BYTE3_SOFT),
 516     DECL(AL_MULAW_SOFT),
 517
 518     DECL(AL_FREQUENCY),
 519     DECL(AL_BITS),
 520     DECL(AL_CHANNELS),
 521     DECL(AL_SIZE),
 522     DECL(AL_INTERNAL_FORMAT_SOFT),
 523     DECL(AL_BYTE_LENGTH_SOFT),
 524     DECL(AL_SAMPLE_LENGTH_SOFT),
 525     DECL(AL_SEC_LENGTH_SOFT),
 526     DECL(AL_UNPACK_BLOCK_ALIGNMENT_SOFT),
 527     DECL(AL_PACK_BLOCK_ALIGNMENT_SOFT),
 528
 529     DECL(AL_SOURCE_RADIUS),
 530
 531     DECL(AL_STEREO_ANGLES),
 532
 533     DECL(AL_UNUSED),
 534     DECL(AL_PENDING),
 535     DECL(AL_PROCESSED),
 536
 537     DECL(AL_NO_ERROR),
 538     DECL(AL_INVALID_NAME),
 539     DECL(AL_INVALID_ENUM),
 540     DECL(AL_INVALID_VALUE),
 541     DECL(AL_INVALID_OPERATION),
 542     DECL(AL_OUT_OF_MEMORY),
 543
 544     DECL(AL_VENDOR),
 545     DECL(AL_VERSION),
 546     DECL(AL_RENDERER),
 547     DECL(AL_EXTENSIONS),
 548
 549     DECL(AL_DOPPLER_FACTOR),
 550     DECL(AL_DOPPLER_VELOCITY),
 551     DECL(AL_DISTANCE_MODEL),
 552     DECL(AL_SPEED_OF_SOUND),
 553     DECL(AL_SOURCE_DISTANCE_MODEL),
 554     DECL(AL_DEFERRED_UPDATES_SOFT),
 555
 556     DECL(AL_INVERSE_DISTANCE),
 557     DECL(AL_INVERSE_DISTANCE_CLAMPED),
 558     DECL(AL_LINEAR_DISTANCE),
 559     DECL(AL_LINEAR_DISTANCE_CLAMPED),
 560     DECL(AL_EXPONENT_DISTANCE),
 561     DECL(AL_EXPONENT_DISTANCE_CLAMPED),
 562
 563     DECL(AL_FILTER_TYPE),
 564     DECL(AL_FILTER_NULL),
 565     DECL(AL_FILTER_LOWPASS),
 566     DECL(AL_FILTER_HIGHPASS),
 567     DECL(AL_FILTER_BANDPASS),
 568
 569     DECL(AL_LOWPASS_GAIN),
 570     DECL(AL_LOWPASS_GAINHF),
 571
 572     DECL(AL_HIGHPASS_GAIN),
 573     DECL(AL_HIGHPASS_GAINLF),
 574
 575     DECL(AL_BANDPASS_GAIN),
 576     DECL(AL_BANDPASS_GAINHF),
 577     DECL(AL_BANDPASS_GAINLF),
 578
 579     DECL(AL_EFFECT_TYPE),
 580     DECL(AL_EFFECT_NULL),
 581     DECL(AL_EFFECT_REVERB),
 582     DECL(AL_EFFECT_EAXREVERB),
 583     DECL(AL_EFFECT_CHORUS),
 584     DECL(AL_EFFECT_DISTORTION),
 585     DECL(AL_EFFECT_ECHO),
 586     DECL(AL_EFFECT_FLANGER),
 587 #if 0
 588     DECL(AL_EFFECT_FREQUENCY_SHIFTER),
 589     DECL(AL_EFFECT_VOCAL_MORPHER),
 590     DECL(AL_EFFECT_PITCH_SHIFTER),
 591 #endif
 592     DECL(AL_EFFECT_RING_MODULATOR),
 593 #if 0
 594     DECL(AL_EFFECT_AUTOWAH),
 595 #endif
 596     DECL(AL_EFFECT_COMPRESSOR),
 597     DECL(AL_EFFECT_EQUALIZER),
 598     DECL(AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT),
 599     DECL(AL_EFFECT_DEDICATED_DIALOGUE),
 600
 601     DECL(AL_EAXREVERB_DENSITY),
 602     DECL(AL_EAXREVERB_DIFFUSION),
 603     DECL(AL_EAXREVERB_GAIN),
 604     DECL(AL_EAXREVERB_GAINHF),
 605     DECL(AL_EAXREVERB_GAINLF),
 606     DECL(AL_EAXREVERB_DECAY_TIME),
 607     DECL(AL_EAXREVERB_DECAY_HFRATIO),
 608     DECL(AL_EAXREVERB_DECAY_LFRATIO),
 609     DECL(AL_EAXREVERB_REFLECTIONS_GAIN),
 610     DECL(AL_EAXREVERB_REFLECTIONS_DELAY),
 611     DECL(AL_EAXREVERB_REFLECTIONS_PAN),
 612     DECL(AL_EAXREVERB_LATE_REVERB_GAIN),
 613     DECL(AL_EAXREVERB_LATE_REVERB_DELAY),
 614     DECL(AL_EAXREVERB_LATE_REVERB_PAN),
 615     DECL(AL_EAXREVERB_ECHO_TIME),
 616     DECL(AL_EAXREVERB_ECHO_DEPTH),
 617     DECL(AL_EAXREVERB_MODULATION_TIME),
 618     DECL(AL_EAXREVERB_MODULATION_DEPTH),
 619     DECL(AL_EAXREVERB_AIR_ABSORPTION_GAINHF),
 620     DECL(AL_EAXREVERB_HFREFERENCE),
 621     DECL(AL_EAXREVERB_LFREFERENCE),
 622     DECL(AL_EAXREVERB_ROOM_ROLLOFF_FACTOR),
 623     DECL(AL_EAXREVERB_DECAY_HFLIMIT),
 624
 625     DECL(AL_REVERB_DENSITY),
 626     DECL(AL_REVERB_DIFFUSION),
 627     DECL(AL_REVERB_GAIN),
 628     DECL(AL_REVERB_GAINHF),
 629     DECL(AL_REVERB_DECAY_TIME),
 630     DECL(AL_REVERB_DECAY_HFRATIO),
 631     DECL(AL_REVERB_REFLECTIONS_GAIN),
 632     DECL(AL_REVERB_REFLECTIONS_DELAY),
 633     DECL(AL_REVERB_LATE_REVERB_GAIN),
 634     DECL(AL_REVERB_LATE_REVERB_DELAY),
 635     DECL(AL_REVERB_AIR_ABSORPTION_GAINHF),
 636     DECL(AL_REVERB_ROOM_ROLLOFF_FACTOR),
 637     DECL(AL_REVERB_DECAY_HFLIMIT),
 638
 639     DECL(AL_CHORUS_WAVEFORM),
 640     DECL(AL_CHORUS_PHASE),
 641     DECL(AL_CHORUS_RATE),
 642     DECL(AL_CHORUS_DEPTH),
 643     DECL(AL_CHORUS_FEEDBACK),
 644     DECL(AL_CHORUS_DELAY),
 645
 646     DECL(AL_DISTORTION_EDGE),
 647     DECL(AL_DISTORTION_GAIN),
 648     DECL(AL_DISTORTION_LOWPASS_CUTOFF),
 649     DECL(AL_DISTORTION_EQCENTER),
 650     DECL(AL_DISTORTION_EQBANDWIDTH),
 651
 652     DECL(AL_ECHO_DELAY),
 653     DECL(AL_ECHO_LRDELAY),
 654     DECL(AL_ECHO_DAMPING),
 655     DECL(AL_ECHO_FEEDBACK),
 656     DECL(AL_ECHO_SPREAD),
 657
 658     DECL(AL_FLANGER_WAVEFORM),
 659     DECL(AL_FLANGER_PHASE),
 660     DECL(AL_FLANGER_RATE),
 661     DECL(AL_FLANGER_DEPTH),
 662     DECL(AL_FLANGER_FEEDBACK),
 663     DECL(AL_FLANGER_DELAY),
 664
 665     DECL(AL_RING_MODULATOR_FREQUENCY),
 666     DECL(AL_RING_MODULATOR_HIGHPASS_CUTOFF),
 667     DECL(AL_RING_MODULATOR_WAVEFORM),
 668
 669 #if 0
 670     DECL(AL_AUTOWAH_ATTACK_TIME),
 671     DECL(AL_AUTOWAH_PEAK_GAIN),
 672     DECL(AL_AUTOWAH_RELEASE_TIME),
 673     DECL(AL_AUTOWAH_RESONANCE),
 674 #endif
 675
 676     DECL(AL_COMPRESSOR_ONOFF),
 677
 678     DECL(AL_EQUALIZER_LOW_GAIN),
 679     DECL(AL_EQUALIZER_LOW_CUTOFF),
 680     DECL(AL_EQUALIZER_MID1_GAIN),
 681     DECL(AL_EQUALIZER_MID1_CENTER),
 682     DECL(AL_EQUALIZER_MID1_WIDTH),
 683     DECL(AL_EQUALIZER_MID2_GAIN),
 684     DECL(AL_EQUALIZER_MID2_CENTER),
 685     DECL(AL_EQUALIZER_MID2_WIDTH),
 686     DECL(AL_EQUALIZER_HIGH_GAIN),
 687     DECL(AL_EQUALIZER_HIGH_CUTOFF),
 688
 689     DECL(AL_DEDICATED_GAIN),
 690
 691     { NULL, (ALCenum)0 }
 692 };
 693 #undef DECL
 694
 695 static const ALCchar alcNoError[] = "No Error";
 696 static const ALCchar alcErrInvalidDevice[] = "Invalid Device";
 697 static const ALCchar alcErrInvalidContext[] = "Invalid Context";
 698 static const ALCchar alcErrInvalidEnum[] = "Invalid Enum";
 699 static const ALCchar alcErrInvalidValue[] = "Invalid Value";
 700 static const ALCchar alcErrOutOfMemory[] = "Out of Memory";
 701
 702
 703 /************************************************
 704  * Global variables
 705  ************************************************/
 706
 707 /* Enumerated device names */
 708 static const ALCchar alcDefaultName[] = "OpenAL Soft\0";
 709
 710 static al_string alcAllDevicesList;
 711 static al_string alcCaptureDeviceList;
 712
 713 /* Default is always the first in the list */
 714 static ALCchar *alcDefaultAllDevicesSpecifier;
 715 static ALCchar *alcCaptureDefaultDeviceSpecifier;
 716
 717 /* Default context extensions */
 718 static const ALchar alExtList[] =
 719     "AL_EXT_ALAW AL_EXT_BFORMAT AL_EXT_DOUBLE AL_EXT_EXPONENT_DISTANCE "
 720     "AL_EXT_FLOAT32 AL_EXT_IMA4 AL_EXT_LINEAR_DISTANCE AL_EXT_MCFORMATS "
 721     "AL_EXT_MULAW AL_EXT_MULAW_BFORMAT AL_EXT_MULAW_MCFORMATS AL_EXT_OFFSET "
 722     "AL_EXT_source_distance_model AL_EXT_SOURCE_RADIUS AL_EXT_STEREO_ANGLES "
 723     "AL_LOKI_quadriphonic AL_SOFT_block_alignment AL_SOFT_deferred_updates "
 724     "AL_SOFT_direct_channels AL_SOFT_loop_points AL_SOFT_MSADPCM "
 725     "AL_SOFT_source_latency AL_SOFT_source_length";
 726
 727 static ATOMIC(ALCenum) LastNullDeviceError = ATOMIC_INIT_STATIC(ALC_NO_ERROR);
 728
 729 /* Thread-local current context */
 730 static altss_t LocalContext;
 731 /* Process-wide current context */
 732 static ATOMIC(ALCcontext*) GlobalContext = ATOMIC_INIT_STATIC(NULL);
 733
 734 /* Mixing thread piority level */
 735 ALint RTPrioLevel;
 736
 737 FILE *LogFile;
 738 #ifdef _DEBUG
 739 enum LogLevel LogLevel = LogWarning;
 740 #else
 741 enum LogLevel LogLevel = LogError;
 742 #endif
 743
 744 /* Flag to trap ALC device errors */
 745 static ALCboolean TrapALCError = ALC_FALSE;
 746
 747 /* One-time configuration init control */
 748 static alonce_flag alc_config_once = AL_ONCE_FLAG_INIT;
 749
 750 /* Default effect that applies to sources that don't have an effect on send 0 */
 751 static ALeffect DefaultEffect;
 752
 753 /* Flag to specify if alcSuspendContext/alcProcessContext should defer/process
 754  * updates.
 755  */
 756 static ALCboolean SuspendDefers = ALC_TRUE;
 757
 758
 759 /************************************************
 760  * ALC information
 761  ************************************************/
 762 static const ALCchar alcNoDeviceExtList[] =
 763     "ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE "
 764     "ALC_EXT_thread_local_context ALC_SOFT_loopback";
 765 static const ALCchar alcExtensionList[] =
 766     "ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE "
 767     "ALC_EXT_DEDICATED ALC_EXT_disconnect ALC_EXT_EFX "
 768     "ALC_EXT_thread_local_context ALC_SOFTX_device_clock ALC_SOFT_HRTF "
 769     "ALC_SOFT_loopback ALC_SOFT_pause_device";
 770 static const ALCint alcMajorVersion = 1;
 771 static const ALCint alcMinorVersion = 1;
 772
 773 static const ALCint alcEFXMajorVersion = 1;
 774 static const ALCint alcEFXMinorVersion = 0;
 775
 776
 777 /************************************************
 778  * Device lists
 779  ************************************************/
 780 static ATOMIC(ALCdevice*) DeviceList = ATOMIC_INIT_STATIC(NULL);
 781
 782 static almtx_t ListLock;
 783 static inline void LockLists(void)
 784 {
 785     int ret = almtx_lock(&ListLock);
 786     assert(ret == althrd_success);
 787 }
 788 static inline void UnlockLists(void)
 789 {
 790     int ret = almtx_unlock(&ListLock);
 791     assert(ret == althrd_success);
 792 }
 793
 794 /************************************************
 795  * Library initialization
 796  ************************************************/
 797 #if defined(_WIN32)
 798 static void alc_init(void);
 799 static void alc_deinit(void);
 800 static void alc_deinit_safe(void);
 801
 802 #ifndef AL_LIBTYPE_STATIC
 803 BOOL APIENTRY DllMain(HINSTANCE hModule, DWORD reason, LPVOID lpReserved)
 804 {
 805     switch(reason)
 806     {
 807         case DLL_PROCESS_ATTACH:
 808             /* Pin the DLL so we won't get unloaded until the process terminates */
 809             GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_PIN | GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
 810                                (WCHAR*)hModule, &hModule);
 811             alc_init();
 812             break;
 813
 814         case DLL_THREAD_DETACH:
 815             break;
 816
 817         case DLL_PROCESS_DETACH:
 818             if(!lpReserved)
 819                 alc_deinit();
 820             else
 821                 alc_deinit_safe();
 822             break;
 823     }
 824     return TRUE;
 825 }
 826 #elif defined(_MSC_VER)
 827 #pragma section(".CRT$XCU",read)
 828 static void alc_constructor(void);
 829 static void alc_destructor(void);
 830 __declspec(allocate(".CRT$XCU")) void (__cdecl* alc_constructor_)(void) = alc_constructor;
 831
 832 static void alc_constructor(void)
 833 {
 834     atexit(alc_destructor);
 835     alc_init();
 836 }
 837
 838 static void alc_destructor(void)
 839 {
 840     alc_deinit();
 841 }
 842 #elif defined(HAVE_GCC_DESTRUCTOR)
 843 static void alc_init(void) __attribute__((constructor));
 844 static void alc_deinit(void) __attribute__((destructor));
 845 #else
 846 #error "No static initialization available on this platform!"
 847 #endif
 848
 849 #elif defined(HAVE_GCC_DESTRUCTOR)
 850
 851 static void alc_init(void) __attribute__((constructor));
 852 static void alc_deinit(void) __attribute__((destructor));
 853
 854 #else
 855 #error "No global initialization available on this platform!"
 856 #endif
 857
 858 static void ReleaseThreadCtx(void *ptr);
 859 static void alc_init(void)
 860 {
 861     const char *str;
 862     int ret;
 863
 864     LogFile = stderr;
 865
 866     AL_STRING_INIT(alcAllDevicesList);
 867     AL_STRING_INIT(alcCaptureDeviceList);
 868
 869     str = getenv("__ALSOFT_HALF_ANGLE_CONES");
 870     if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
 871         ConeScale *= 0.5f;
 872
 873     str = getenv("__ALSOFT_REVERSE_Z");
 874     if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
 875         ZScale *= -1.0f;
 876
 877     ret = altss_create(&LocalContext, ReleaseThreadCtx);
 878     assert(ret == althrd_success);
 879
 880     ret = almtx_init(&ListLock, almtx_recursive);
 881     assert(ret == althrd_success);
 882
 883     ThunkInit();
 884 }
 885
 886 static void alc_initconfig(void)
 887 {
 888     const char *devs, *str;
 889     ALuint capfilter;
 890     float valf;
 891     int i, n;
 892
 893     str = getenv("ALSOFT_LOGLEVEL");
 894     if(str)
 895     {
 896         long lvl = strtol(str, NULL, 0);
 897         if(lvl >= NoLog && lvl <= LogRef)
 898             LogLevel = lvl;
 899     }
 900
 901     str = getenv("ALSOFT_LOGFILE");
 902     if(str && str[0])
 903     {
 904         FILE *logfile = al_fopen(str, "wt");
 905         if(logfile) LogFile = logfile;
 906         else ERR("Failed to open log file '%s'\n", str);
 907     }
 908
 909     {
 910         char buf[1024] = "";
 911         int len = snprintf(buf, sizeof(buf), "%s", BackendList[0].name);
 912         for(i = 1;BackendList[i].name;i++)
 913             len += snprintf(buf+len, sizeof(buf)-len, ", %s", BackendList[i].name);
 914         TRACE("Supported backends: %s\n", buf);
 915     }
 916     ReadALConfig();
 917
 918     str = getenv("__ALSOFT_SUSPEND_CONTEXT");
 919     if(str && *str)
 920     {
 921         if(strcasecmp(str, "ignore") == 0)
 922         {
 923             SuspendDefers = ALC_FALSE;
 924             TRACE("Selected context suspend behavior, \"ignore\"\n");
 925         }
 926         else
 927             ERR("Unhandled context suspend behavior setting: \"%s\"\n", str);
 928     }
 929
 930     capfilter = 0;
 931 #if defined(HAVE_SSE4_1)
 932     capfilter |= CPU_CAP_SSE | CPU_CAP_SSE2 | CPU_CAP_SSE3 | CPU_CAP_SSE4_1;
 933 #elif defined(HAVE_SSE3)
 934     capfilter |= CPU_CAP_SSE | CPU_CAP_SSE2 | CPU_CAP_SSE3;
 935 #elif defined(HAVE_SSE2)
 936     capfilter |= CPU_CAP_SSE | CPU_CAP_SSE2;
 937 #elif defined(HAVE_SSE)
 938     capfilter |= CPU_CAP_SSE;
 939 #endif
 940 #ifdef HAVE_NEON
 941     capfilter |= CPU_CAP_NEON;
 942 #endif
 943     if(ConfigValueStr(NULL, NULL, "disable-cpu-exts", &str))
 944     {
 945         if(strcasecmp(str, "all") == 0)
 946             capfilter = 0;
 947         else
 948         {
 949             size_t len;
 950             const char *next = str;
 951
 952             do {
 953                 str = next;
 954                 while(isspace(str[0]))
 955                     str++;
 956                 next = strchr(str, ',');
 957
 958                 if(!str[0] || str[0] == ',')
 959                     continue;
 960
 961                 len = (next ? ((size_t)(next-str)) : strlen(str));
 962                 while(len > 0 && isspace(str[len-1]))
 963                     len--;
 964                 if(len == 3 && strncasecmp(str, "sse", len) == 0)
 965                     capfilter &= ~CPU_CAP_SSE;
 966                 else if(len == 4 && strncasecmp(str, "sse2", len) == 0)
 967                     capfilter &= ~CPU_CAP_SSE2;
 968                 else if(len == 4 && strncasecmp(str, "sse3", len) == 0)
 969                     capfilter &= ~CPU_CAP_SSE3;
 970                 else if(len == 6 && strncasecmp(str, "sse4.1", len) == 0)
 971                     capfilter &= ~CPU_CAP_SSE4_1;
 972                 else if(len == 4 && strncasecmp(str, "neon", len) == 0)
 973                     capfilter &= ~CPU_CAP_NEON;
 974                 else
 975                     WARN("Invalid CPU extension \"%s\"\n", str);
 976             } while(next++);
 977         }
 978     }
 979     FillCPUCaps(capfilter);
 980
 981 #ifdef _WIN32
 982     RTPrioLevel = 1;
 983 #else
 984     RTPrioLevel = 0;
 985 #endif
 986     ConfigValueInt(NULL, NULL, "rt-prio", &RTPrioLevel);
 987
 988     aluInitMixer();
 989
 990     str = getenv("ALSOFT_TRAP_ERROR");
 991     if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
 992     {
 993         TrapALError  = AL_TRUE;
 994         TrapALCError = AL_TRUE;
 995     }
 996     else
 997     {
 998         str = getenv("ALSOFT_TRAP_AL_ERROR");
 999         if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
1000             TrapALError = AL_TRUE;
1001         TrapALError = GetConfigValueBool(NULL, NULL, "trap-al-error", TrapALError);
1002
1003         str = getenv("ALSOFT_TRAP_ALC_ERROR");
1004         if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
1005             TrapALCError = ALC_TRUE;
1006         TrapALCError = GetConfigValueBool(NULL, NULL, "trap-alc-error", TrapALCError);
1007     }
1008
1009     if(ConfigValueFloat(NULL, "reverb", "boost", &valf))
1010         ReverbBoost *= powf(10.0f, valf / 20.0f);
1011
1012     EmulateEAXReverb = GetConfigValueBool(NULL, "reverb", "emulate-eax", AL_FALSE);
1013
1014     if(((devs=getenv("ALSOFT_DRIVERS")) && devs[0]) ||
1015        ConfigValueStr(NULL, NULL, "drivers", &devs))
1016     {
1017         int n;
1018         size_t len;
1019         const char *next = devs;
1020         int endlist, delitem;
1021
1022         i = 0;
1023         do {
1024             devs = next;
1025             while(isspace(devs[0]))
1026                 devs++;
1027             next = strchr(devs, ',');
1028
1029             delitem = (devs[0] == '-');
1030             if(devs[0] == '-') devs++;
1031
1032             if(!devs[0] || devs[0] == ',')
1033             {
1034                 endlist = 0;
1035                 continue;
1036             }
1037             endlist = 1;
1038
1039             len = (next ? ((size_t)(next-devs)) : strlen(devs));
1040             while(len > 0 && isspace(devs[len-1]))
1041                 len--;
1042             for(n = i;BackendList[n].name;n++)
1043             {
1044                 if(len == strlen(BackendList[n].name) &&
1045                    strncmp(BackendList[n].name, devs, len) == 0)
1046                 {
1047                     if(delitem)
1048                     {
1049                         do {
1050                             BackendList[n] = BackendList[n+1];
1051                             ++n;
1052                         } while(BackendList[n].name);
1053                     }
1054                     else
1055                     {
1056                         struct BackendInfo Bkp = BackendList[n];
1057                         while(n > i)
1058                         {
1059                             BackendList[n] = BackendList[n-1];
1060                             --n;
1061                         }
1062                         BackendList[n] = Bkp;
1063
1064                         i++;
1065                     }
1066                     break;
1067                 }
1068             }
1069         } while(next++);
1070
1071         if(endlist)
1072         {
1073             BackendList[i].name = NULL;
1074             BackendList[i].getFactory = NULL;
1075             BackendList[i].Init = NULL;
1076             BackendList[i].Deinit = NULL;
1077             BackendList[i].Probe = NULL;
1078         }
1079     }
1080
1081     for(i = 0;(BackendList[i].Init || BackendList[i].getFactory) && (!PlaybackBackend.name || !CaptureBackend.name);i++)
1082     {
1083         if(BackendList[i].getFactory)
1084         {
1085             ALCbackendFactory *factory = BackendList[i].getFactory();
1086             if(!V0(factory,init)())
1087             {
1088                 WARN("Failed to initialize backend \"%s\"\n", BackendList[i].name);
1089                 continue;
1090             }
1091
1092             TRACE("Initialized backend \"%s\"\n", BackendList[i].name);
1093             if(!PlaybackBackend.name && V(factory,querySupport)(ALCbackend_Playback))
1094             {
1095                 PlaybackBackend = BackendList[i];
1096                 TRACE("Added \"%s\" for playback\n", PlaybackBackend.name);
1097             }
1098             if(!CaptureBackend.name && V(factory,querySupport)(ALCbackend_Capture))
1099             {
1100                 CaptureBackend = BackendList[i];
1101                 TRACE("Added \"%s\" for capture\n", CaptureBackend.name);
1102             }
1103
1104             continue;
1105         }
1106
1107         if(!BackendList[i].Init(&BackendList[i].Funcs))
1108         {
1109             WARN("Failed to initialize backend \"%s\"\n", BackendList[i].name);
1110             continue;
1111         }
1112
1113         TRACE("Initialized backend \"%s\"\n", BackendList[i].name);
1114         if(BackendList[i].Funcs.OpenPlayback && !PlaybackBackend.name)
1115         {
1116             PlaybackBackend = BackendList[i];
1117             TRACE("Added \"%s\" for playback\n", PlaybackBackend.name);
1118         }
1119         if(BackendList[i].Funcs.OpenCapture && !CaptureBackend.name)
1120         {
1121             CaptureBackend = BackendList[i];
1122             TRACE("Added \"%s\" for capture\n", CaptureBackend.name);
1123         }
1124     }
1125     {
1126         ALCbackendFactory *factory = ALCloopbackFactory_getFactory();
1127         V0(factory,init)();
1128     }
1129
1130     if(!PlaybackBackend.name)
1131         WARN("No playback backend available!\n");
1132     if(!CaptureBackend.name)
1133         WARN("No capture backend available!\n");
1134
1135     if(ConfigValueStr(NULL, NULL, "excludefx", &str))
1136     {
1137         size_t len;
1138         const char *next = str;
1139
1140         do {
1141             str = next;
1142             next = strchr(str, ',');
1143
1144             if(!str[0] || next == str)
1145                 continue;
1146
1147             len = (next ? ((size_t)(next-str)) : strlen(str));
1148             for(n = 0;EffectList[n].name;n++)
1149             {
1150                 if(len == strlen(EffectList[n].name) &&
1151                    strncmp(EffectList[n].name, str, len) == 0)
1152                     DisabledEffects[EffectList[n].type] = AL_TRUE;
1153             }
1154         } while(next++);
1155     }
1156
1157     InitEffectFactoryMap();
1158
1159     InitEffect(&DefaultEffect);
1160     str = getenv("ALSOFT_DEFAULT_REVERB");
1161     if((str && str[0]) || ConfigValueStr(NULL, NULL, "default-reverb", &str))
1162         LoadReverbPreset(str, &DefaultEffect);
1163 }
1164 #define DO_INITCONFIG() alcall_once(&alc_config_once, alc_initconfig)
1165
1166
1167 /************************************************
1168  * Library deinitialization
1169  ************************************************/
1170 static void alc_cleanup(void)
1171 {
1172     ALCdevice *dev;
1173
1174     AL_STRING_DEINIT(alcAllDevicesList);
1175     AL_STRING_DEINIT(alcCaptureDeviceList);
1176
1177     free(alcDefaultAllDevicesSpecifier);
1178     alcDefaultAllDevicesSpecifier = NULL;
1179     free(alcCaptureDefaultDeviceSpecifier);
1180     alcCaptureDefaultDeviceSpecifier = NULL;
1181
1182     if((dev=ATOMIC_EXCHANGE(ALCdevice*, &DeviceList, NULL)) != NULL)
1183     {
1184         ALCuint num = 0;
1185         do {
1186             num++;
1187         } while((dev=dev->next) != NULL);
1188         ERR("%u device%s not closed\n", num, (num>1)?"s":"");
1189     }
1190
1191     DeinitEffectFactoryMap();
1192 }
1193
1194 static void alc_deinit_safe(void)
1195 {
1196     alc_cleanup();
1197
1198     FreeHrtfs();
1199     FreeALConfig();
1200
1201     ThunkExit();
1202     almtx_destroy(&ListLock);
1203     altss_delete(LocalContext);
1204
1205     if(LogFile != stderr)
1206         fclose(LogFile);
1207     LogFile = NULL;
1208 }
1209
1210 static void alc_deinit(void)
1211 {
1212     int i;
1213
1214     alc_cleanup();
1215
1216     memset(&PlaybackBackend, 0, sizeof(PlaybackBackend));
1217     memset(&CaptureBackend, 0, sizeof(CaptureBackend));
1218
1219     for(i = 0;BackendList[i].Deinit || BackendList[i].getFactory;i++)
1220     {
1221         if(!BackendList[i].getFactory)
1222             BackendList[i].Deinit();
1223         else
1224         {
1225             ALCbackendFactory *factory = BackendList[i].getFactory();
1226             V0(factory,deinit)();
1227         }
1228     }
1229     {
1230         ALCbackendFactory *factory = ALCloopbackFactory_getFactory();
1231         V0(factory,deinit)();
1232     }
1233
1234     alc_deinit_safe();
1235 }
1236
1237
1238 /************************************************
1239  * Device enumeration
1240  ************************************************/
1241 static void ProbeDevices(al_string *list, struct BackendInfo *backendinfo, enum DevProbe type)
1242 {
1243     DO_INITCONFIG();
1244
1245     LockLists();
1246     al_string_clear(list);
1247
1248     if(backendinfo->Probe)
1249         backendinfo->Probe(type);
1250     else if(backendinfo->getFactory)
1251     {
1252         ALCbackendFactory *factory = backendinfo->getFactory();
1253         V(factory,probe)(type);
1254     }
1255
1256     UnlockLists();
1257 }
1258 static void ProbeAllDevicesList(void)
1259 { ProbeDevices(&alcAllDevicesList, &PlaybackBackend, ALL_DEVICE_PROBE); }
1260 static void ProbeCaptureDeviceList(void)
1261 { ProbeDevices(&alcCaptureDeviceList, &CaptureBackend, CAPTURE_DEVICE_PROBE); }
1262
1263 static void AppendDevice(const ALCchar *name, al_string *devnames)
1264 {
1265     size_t len = strlen(name);
1266     if(len > 0)
1267         al_string_append_range(devnames, name, name+len+1);
1268 }
1269 void AppendAllDevicesList(const ALCchar *name)
1270 { AppendDevice(name, &alcAllDevicesList); }
1271 void AppendCaptureDeviceList(const ALCchar *name)
1272 { AppendDevice(name, &alcCaptureDeviceList); }
1273
1274
1275 /************************************************
1276  * Device format information
1277  ************************************************/
1278 const ALCchar *DevFmtTypeString(enum DevFmtType type)
1279 {
1280     switch(type)
1281     {
1282     case DevFmtByte: return "Signed Byte";
1283     case DevFmtUByte: return "Unsigned Byte";
1284     case DevFmtShort: return "Signed Short";
1285     case DevFmtUShort: return "Unsigned Short";
1286     case DevFmtInt: return "Signed Int";
1287     case DevFmtUInt: return "Unsigned Int";
1288     case DevFmtFloat: return "Float";
1289     }
1290     return "(unknown type)";
1291 }
1292 const ALCchar *DevFmtChannelsString(enum DevFmtChannels chans)
1293 {
1294     switch(chans)
1295     {
1296     case DevFmtMono: return "Mono";
1297     case DevFmtStereo: return "Stereo";
1298     case DevFmtQuad: return "Quadraphonic";
1299     case DevFmtX51: return "5.1 Surround";
1300     case DevFmtX51Rear: return "5.1 Surround (Rear)";
1301     case DevFmtX61: return "6.1 Surround";
1302     case DevFmtX71: return "7.1 Surround";
1303     case DevFmtBFormat3D: return "B-Format 3D";
1304     }
1305     return "(unknown channels)";
1306 }
1307
1308 extern inline ALuint FrameSizeFromDevFmt(enum DevFmtChannels chans, enum DevFmtType type);
1309 ALuint BytesFromDevFmt(enum DevFmtType type)
1310 {
1311     switch(type)
1312     {
1313     case DevFmtByte: return sizeof(ALbyte);
1314     case DevFmtUByte: return sizeof(ALubyte);
1315     case DevFmtShort: return sizeof(ALshort);
1316     case DevFmtUShort: return sizeof(ALushort);
1317     case DevFmtInt: return sizeof(ALint);
1318     case DevFmtUInt: return sizeof(ALuint);
1319     case DevFmtFloat: return sizeof(ALfloat);
1320     }
1321     return 0;
1322 }
1323 ALuint ChannelsFromDevFmt(enum DevFmtChannels chans)
1324 {
1325     switch(chans)
1326     {
1327     case DevFmtMono: return 1;
1328     case DevFmtStereo: return 2;
1329     case DevFmtQuad: return 4;
1330     case DevFmtX51: return 6;
1331     case DevFmtX51Rear: return 6;
1332     case DevFmtX61: return 7;
1333     case DevFmtX71: return 8;
1334     case DevFmtBFormat3D: return 4;
1335     }
1336     return 0;
1337 }
1338
1339 DECL_CONST static ALboolean DecomposeDevFormat(ALenum format,
1340   enum DevFmtChannels *chans, enum DevFmtType *type)
1341 {
1342     static const struct {
1343         ALenum format;
1344         enum DevFmtChannels channels;
1345         enum DevFmtType type;
1346     } list[] = {
1347         { AL_FORMAT_MONO8,        DevFmtMono, DevFmtUByte },
1348         { AL_FORMAT_MONO16,       DevFmtMono, DevFmtShort },
1349         { AL_FORMAT_MONO_FLOAT32, DevFmtMono, DevFmtFloat },
1350
1351         { AL_FORMAT_STEREO8,        DevFmtStereo, DevFmtUByte },
1352         { AL_FORMAT_STEREO16,       DevFmtStereo, DevFmtShort },
1353         { AL_FORMAT_STEREO_FLOAT32, DevFmtStereo, DevFmtFloat },
1354
1355         { AL_FORMAT_QUAD8,  DevFmtQuad, DevFmtUByte },
1356         { AL_FORMAT_QUAD16, DevFmtQuad, DevFmtShort },
1357         { AL_FORMAT_QUAD32, DevFmtQuad, DevFmtFloat },
1358
1359         { AL_FORMAT_51CHN8,  DevFmtX51, DevFmtUByte },
1360         { AL_FORMAT_51CHN16, DevFmtX51, DevFmtShort },
1361         { AL_FORMAT_51CHN32, DevFmtX51, DevFmtFloat },
1362
1363         { AL_FORMAT_61CHN8,  DevFmtX61, DevFmtUByte },
1364         { AL_FORMAT_61CHN16, DevFmtX61, DevFmtShort },
1365         { AL_FORMAT_61CHN32, DevFmtX61, DevFmtFloat },
1366
1367         { AL_FORMAT_71CHN8,  DevFmtX71, DevFmtUByte },
1368         { AL_FORMAT_71CHN16, DevFmtX71, DevFmtShort },
1369         { AL_FORMAT_71CHN32, DevFmtX71, DevFmtFloat },
1370     };
1371     ALuint i;
1372
1373     for(i = 0;i < COUNTOF(list);i++)
1374     {
1375         if(list[i].format == format)
1376         {
1377             *chans = list[i].channels;
1378             *type  = list[i].type;
1379             return AL_TRUE;
1380         }
1381     }
1382
1383     return AL_FALSE;
1384 }
1385
1386 DECL_CONST static ALCboolean IsValidALCType(ALCenum type)
1387 {
1388     switch(type)
1389     {
1390         case ALC_BYTE_SOFT:
1391         case ALC_UNSIGNED_BYTE_SOFT:
1392         case ALC_SHORT_SOFT:
1393         case ALC_UNSIGNED_SHORT_SOFT:
1394         case ALC_INT_SOFT:
1395         case ALC_UNSIGNED_INT_SOFT:
1396         case ALC_FLOAT_SOFT:
1397             return ALC_TRUE;
1398     }
1399     return ALC_FALSE;
1400 }
1401
1402 DECL_CONST static ALCboolean IsValidALCChannels(ALCenum channels)
1403 {
1404     switch(channels)
1405     {
1406         case ALC_MONO_SOFT:
1407         case ALC_STEREO_SOFT:
1408         case ALC_QUAD_SOFT:
1409         case ALC_5POINT1_SOFT:
1410         case ALC_6POINT1_SOFT:
1411         case ALC_7POINT1_SOFT:
1412             return ALC_TRUE;
1413     }
1414     return ALC_FALSE;
1415 }
1416
1417
1418 /************************************************
1419  * Miscellaneous ALC helpers
1420  ************************************************/
1421
1422 extern inline void LockContext(ALCcontext *context);
1423 extern inline void UnlockContext(ALCcontext *context);
1424
1425 void ALCdevice_Lock(ALCdevice *device)
1426 {
1427     V0(device->Backend,lock)();
1428 }
1429
1430 void ALCdevice_Unlock(ALCdevice *device)
1431 {
1432     V0(device->Backend,unlock)();
1433 }
1434
1435
1436 /* SetDefaultWFXChannelOrder
1437  *
1438  * Sets the default channel order used by WaveFormatEx.
1439  */
1440 void SetDefaultWFXChannelOrder(ALCdevice *device)
1441 {
1442     ALuint i;
1443
1444     for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
1445         device->RealOut.ChannelName[i] = InvalidChannel;
1446
1447     switch(device->FmtChans)
1448     {
1449     case DevFmtMono:
1450         device->RealOut.ChannelName[0] = FrontCenter;
1451         break;
1452     case DevFmtStereo:
1453         device->RealOut.ChannelName[0] = FrontLeft;
1454         device->RealOut.ChannelName[1] = FrontRight;
1455         break;
1456     case DevFmtQuad:
1457         device->RealOut.ChannelName[0] = FrontLeft;
1458         device->RealOut.ChannelName[1] = FrontRight;
1459         device->RealOut.ChannelName[2] = BackLeft;
1460         device->RealOut.ChannelName[3] = BackRight;
1461         break;
1462     case DevFmtX51:
1463         device->RealOut.ChannelName[0] = FrontLeft;
1464         device->RealOut.ChannelName[1] = FrontRight;
1465         device->RealOut.ChannelName[2] = FrontCenter;
1466         device->RealOut.ChannelName[3] = LFE;
1467         device->RealOut.ChannelName[4] = SideLeft;
1468         device->RealOut.ChannelName[5] = SideRight;
1469         break;
1470     case DevFmtX51Rear:
1471         device->RealOut.ChannelName[0] = FrontLeft;
1472         device->RealOut.ChannelName[1] = FrontRight;
1473         device->RealOut.ChannelName[2] = FrontCenter;
1474         device->RealOut.ChannelName[3] = LFE;
1475         device->RealOut.ChannelName[4] = BackLeft;
1476         device->RealOut.ChannelName[5] = BackRight;
1477         break;
1478     case DevFmtX61:
1479         device->RealOut.ChannelName[0] = FrontLeft;
1480         device->RealOut.ChannelName[1] = FrontRight;
1481         device->RealOut.ChannelName[2] = FrontCenter;
1482         device->RealOut.ChannelName[3] = LFE;
1483         device->RealOut.ChannelName[4] = BackCenter;
1484         device->RealOut.ChannelName[5] = SideLeft;
1485         device->RealOut.ChannelName[6] = SideRight;
1486         break;
1487     case DevFmtX71:
1488         device->RealOut.ChannelName[0] = FrontLeft;
1489         device->RealOut.ChannelName[1] = FrontRight;
1490         device->RealOut.ChannelName[2] = FrontCenter;
1491         device->RealOut.ChannelName[3] = LFE;
1492         device->RealOut.ChannelName[4] = BackLeft;
1493         device->RealOut.ChannelName[5] = BackRight;
1494         device->RealOut.ChannelName[6] = SideLeft;
1495         device->RealOut.ChannelName[7] = SideRight;
1496         break;
1497     case DevFmtBFormat3D:
1498         device->RealOut.ChannelName[0] = Aux0;
1499         device->RealOut.ChannelName[1] = Aux1;
1500         device->RealOut.ChannelName[2] = Aux2;
1501         device->RealOut.ChannelName[3] = Aux3;
1502         break;
1503     }
1504 }
1505
1506 /* SetDefaultChannelOrder
1507  *
1508  * Sets the default channel order used by most non-WaveFormatEx-based APIs.
1509  */
1510 void SetDefaultChannelOrder(ALCdevice *device)
1511 {
1512     ALuint i;
1513
1514     for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
1515         device->RealOut.ChannelName[i] = InvalidChannel;
1516
1517     switch(device->FmtChans)
1518     {
1519     case DevFmtX51Rear:
1520         device->RealOut.ChannelName[0] = FrontLeft;
1521         device->RealOut.ChannelName[1] = FrontRight;
1522         device->RealOut.ChannelName[2] = BackLeft;
1523         device->RealOut.ChannelName[3] = BackRight;
1524         device->RealOut.ChannelName[4] = FrontCenter;
1525         device->RealOut.ChannelName[5] = LFE;
1526         return;
1527     case DevFmtX71:
1528         device->RealOut.ChannelName[0] = FrontLeft;
1529         device->RealOut.ChannelName[1] = FrontRight;
1530         device->RealOut.ChannelName[2] = BackLeft;
1531         device->RealOut.ChannelName[3] = BackRight;
1532         device->RealOut.ChannelName[4] = FrontCenter;
1533         device->RealOut.ChannelName[5] = LFE;
1534         device->RealOut.ChannelName[6] = SideLeft;
1535         device->RealOut.ChannelName[7] = SideRight;
1536         return;
1537
1538     /* Same as WFX order */
1539     case DevFmtMono:
1540     case DevFmtStereo:
1541     case DevFmtQuad:
1542     case DevFmtX51:
1543     case DevFmtX61:
1544     case DevFmtBFormat3D:
1545         SetDefaultWFXChannelOrder(device);
1546         break;
1547     }
1548 }
1549
1550 extern inline ALint GetChannelIndex(const enum Channel names[MAX_OUTPUT_CHANNELS], enum Channel chan);
1551
1552
1553 /* ALCcontext_DeferUpdates
1554  *
1555  * Defers/suspends updates for the given context's listener and sources. This
1556  * does *NOT* stop mixing, but rather prevents certain property changes from
1557  * taking effect.
1558  */
1559 void ALCcontext_DeferUpdates(ALCcontext *context)
1560 {
1561     ATOMIC_STORE(&context->DeferUpdates, AL_TRUE);
1562 }
1563
1564 /* ALCcontext_ProcessUpdates
1565  *
1566  * Resumes update processing after being deferred.
1567  */
1568 void ALCcontext_ProcessUpdates(ALCcontext *context)
1569 {
1570     ALCdevice *device = context->Device;
1571
1572     ReadLock(&context->PropLock);
1573     if(ATOMIC_EXCHANGE(ALenum, &context->DeferUpdates, AL_FALSE))
1574     {
1575         ALsizei pos;
1576
1577         UpdateListenerProps(context);
1578
1579         LockUIntMapRead(&context->SourceMap);
1580         V0(device->Backend,lock)();
1581         for(pos = 0;pos < context->SourceMap.size;pos++)
1582         {
1583             ALsource *Source = context->SourceMap.array[pos].value;
1584             ALenum new_state;
1585
1586             if((Source->state == AL_PLAYING || Source->state == AL_PAUSED) &&
1587                Source->OffsetType != AL_NONE)
1588             {
1589                 WriteLock(&Source->queue_lock);
1590                 ApplyOffset(Source);
1591                 WriteUnlock(&Source->queue_lock);
1592             }
1593
1594             new_state = Source->new_state;
1595             Source->new_state = AL_NONE;
1596             if(new_state)
1597                 SetSourceState(Source, context, new_state);
1598         }
1599         V0(device->Backend,unlock)();
1600         UnlockUIntMapRead(&context->SourceMap);
1601         UpdateAllSourceProps(context);
1602     }
1603     ReadUnlock(&context->PropLock);
1604 }
1605
1606
1607 /* alcSetError
1608  *
1609  * Stores the latest ALC device error
1610  */
1611 static void alcSetError(ALCdevice *device, ALCenum errorCode)
1612 {
1613     if(TrapALCError)
1614     {
1615 #ifdef _WIN32
1616         /* DebugBreak() will cause an exception if there is no debugger */
1617         if(IsDebuggerPresent())
1618             DebugBreak();
1619 #elif defined(SIGTRAP)
1620         raise(SIGTRAP);
1621 #endif
1622     }
1623
1624     if(device)
1625         ATOMIC_STORE(&device->LastError, errorCode);
1626     else
1627         ATOMIC_STORE(&LastNullDeviceError, errorCode);
1628 }
1629
1630
1631 /* UpdateClockBase
1632  *
1633  * Updates the device's base clock time with however many samples have been
1634  * done. This is used so frequency changes on the device don't cause the time
1635  * to jump forward or back.
1636  */
1637 static inline void UpdateClockBase(ALCdevice *device)
1638 {
1639     device->ClockBase += device->SamplesDone * DEVICE_CLOCK_RES / device->Frequency;
1640     device->SamplesDone = 0;
1641 }
1642
1643 /* UpdateDeviceParams
1644  *
1645  * Updates device parameters according to the attribute list (caller is
1646  * responsible for holding the list lock).
1647  */
1648 static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
1649 {
1650     ALCcontext *context;
1651     enum HrtfRequestMode hrtf_appreq = Hrtf_Default;
1652     enum HrtfRequestMode hrtf_userreq = Hrtf_Default;
1653     enum DevFmtChannels oldChans;
1654     enum DevFmtType oldType;
1655     ALCuint oldFreq;
1656     FPUCtl oldMode;
1657     ALCsizei hrtf_id = -1;
1658     size_t size;
1659
1660     // Check for attributes
1661     if(device->Type == Loopback)
1662     {
1663         enum {
1664             GotFreq  = 1<<0,
1665             GotChans = 1<<1,
1666             GotType  = 1<<2,
1667             GotAll   = GotFreq|GotChans|GotType
1668         };
1669         ALCuint freq, numMono, numStereo, numSends;
1670         enum DevFmtChannels schans;
1671         enum DevFmtType stype;
1672         ALCuint attrIdx = 0;
1673         ALCint gotFmt = 0;
1674
1675         if(!attrList)
1676         {
1677             WARN("Missing attributes for loopback device\n");
1678             return ALC_INVALID_VALUE;
1679         }
1680
1681         numMono = device->NumMonoSources;
1682         numStereo = device->NumStereoSources;
1683         numSends = device->NumAuxSends;
1684         schans = device->FmtChans;
1685         stype = device->FmtType;
1686         freq = device->Frequency;
1687
1688 #define TRACE_ATTR(a, v) TRACE("Loopback %s = %d\n", #a, v)
1689         while(attrList[attrIdx])
1690         {
1691             if(attrList[attrIdx] == ALC_FORMAT_CHANNELS_SOFT)
1692             {
1693                 ALCint val = attrList[attrIdx + 1];
1694                 TRACE_ATTR(ALC_FORMAT_CHANNELS_SOFT, val);
1695                 if(!IsValidALCChannels(val) || !ChannelsFromDevFmt(val))
1696                     return ALC_INVALID_VALUE;
1697                 schans = val;
1698                 gotFmt |= GotChans;
1699             }
1700
1701             if(attrList[attrIdx] == ALC_FORMAT_TYPE_SOFT)
1702             {
1703                 ALCint val = attrList[attrIdx + 1];
1704                 TRACE_ATTR(ALC_FORMAT_TYPE_SOFT, val);
1705                 if(!IsValidALCType(val) || !BytesFromDevFmt(val))
1706                     return ALC_INVALID_VALUE;
1707                 stype = val;
1708                 gotFmt |= GotType;
1709             }
1710
1711             if(attrList[attrIdx] == ALC_FREQUENCY)
1712             {
1713                 freq = attrList[attrIdx + 1];
1714                 TRACE_ATTR(ALC_FREQUENCY, freq);
1715                 if(freq < MIN_OUTPUT_RATE)
1716                     return ALC_INVALID_VALUE;
1717                 gotFmt |= GotFreq;
1718             }
1719
1720             if(attrList[attrIdx] == ALC_STEREO_SOURCES)
1721             {
1722                 numStereo = attrList[attrIdx + 1];
1723                 TRACE_ATTR(ALC_STEREO_SOURCES, numStereo);
1724                 if(numStereo > device->MaxNoOfSources)
1725                     numStereo = device->MaxNoOfSources;
1726
1727                 numMono = device->MaxNoOfSources - numStereo;
1728             }
1729
1730             if(attrList[attrIdx] == ALC_MAX_AUXILIARY_SENDS)
1731             {
1732                 numSends = attrList[attrIdx + 1];
1733                 TRACE_ATTR(ALC_MAX_AUXILIARY_SENDS, numSends);
1734             }
1735
1736             if(attrList[attrIdx] == ALC_HRTF_SOFT)
1737             {
1738                 TRACE_ATTR(ALC_HRTF_SOFT, attrList[attrIdx + 1]);
1739                 if(attrList[attrIdx + 1] == ALC_FALSE)
1740                     hrtf_appreq = Hrtf_Disable;
1741                 else if(attrList[attrIdx + 1] == ALC_TRUE)
1742                     hrtf_appreq = Hrtf_Enable;
1743                 else
1744                     hrtf_appreq = Hrtf_Default;
1745             }
1746
1747             if(attrList[attrIdx] == ALC_HRTF_ID_SOFT)
1748             {
1749                 hrtf_id = attrList[attrIdx + 1];
1750                 TRACE_ATTR(ALC_HRTF_ID_SOFT, hrtf_id);
1751             }
1752
1753             attrIdx += 2;
1754         }
1755 #undef TRACE_ATTR
1756
1757         if(gotFmt != GotAll)
1758         {
1759             WARN("Missing format for loopback device\n");
1760             return ALC_INVALID_VALUE;
1761         }
1762
1763         ConfigValueUInt(NULL, NULL, "sends", &numSends);
1764         numSends = minu(MAX_SENDS, numSends);
1765
1766         if((device->Flags&DEVICE_RUNNING))
1767             V0(device->Backend,stop)();
1768         device->Flags &= ~DEVICE_RUNNING;
1769
1770         UpdateClockBase(device);
1771
1772         device->Frequency = freq;
1773         device->FmtChans = schans;
1774         device->FmtType = stype;
1775         device->NumMonoSources = numMono;
1776         device->NumStereoSources = numStereo;
1777         device->NumAuxSends = numSends;
1778     }
1779     else if(attrList && attrList[0])
1780     {
1781         ALCuint freq, numMono, numStereo, numSends;
1782         ALCuint attrIdx = 0;
1783
1784         /* If a context is already running on the device, stop playback so the
1785          * device attributes can be updated. */
1786         if((device->Flags&DEVICE_RUNNING))
1787             V0(device->Backend,stop)();
1788         device->Flags &= ~DEVICE_RUNNING;
1789
1790         freq = device->Frequency;
1791         numMono = device->NumMonoSources;
1792         numStereo = device->NumStereoSources;
1793         numSends = device->NumAuxSends;
1794
1795 #define TRACE_ATTR(a, v) TRACE("%s = %d\n", #a, v)
1796         while(attrList[attrIdx])
1797         {
1798             if(attrList[attrIdx] == ALC_FREQUENCY)
1799             {
1800                 freq = attrList[attrIdx + 1];
1801                 device->Flags |= DEVICE_FREQUENCY_REQUEST;
1802                 TRACE_ATTR(ALC_FREQUENCY, freq);
1803             }
1804
1805             if(attrList[attrIdx] == ALC_STEREO_SOURCES)
1806             {
1807                 numStereo = attrList[attrIdx + 1];
1808                 TRACE_ATTR(ALC_STEREO_SOURCES, numStereo);
1809                 if(numStereo > device->MaxNoOfSources)
1810                     numStereo = device->MaxNoOfSources;
1811
1812                 numMono = device->MaxNoOfSources - numStereo;
1813             }
1814
1815             if(attrList[attrIdx] == ALC_MAX_AUXILIARY_SENDS)
1816             {
1817                 numSends = attrList[attrIdx + 1];
1818                 TRACE_ATTR(ALC_MAX_AUXILIARY_SENDS, numSends);
1819             }
1820
1821             if(attrList[attrIdx] == ALC_HRTF_SOFT)
1822             {
1823                 TRACE_ATTR(ALC_HRTF_SOFT, attrList[attrIdx + 1]);
1824                 if(attrList[attrIdx + 1] == ALC_FALSE)
1825                     hrtf_appreq = Hrtf_Disable;
1826                 else if(attrList[attrIdx + 1] == ALC_TRUE)
1827                     hrtf_appreq = Hrtf_Enable;
1828                 else
1829                     hrtf_appreq = Hrtf_Default;
1830             }
1831
1832             if(attrList[attrIdx] == ALC_HRTF_ID_SOFT)
1833             {
1834                 hrtf_id = attrList[attrIdx + 1];
1835                 TRACE_ATTR(ALC_HRTF_ID_SOFT, hrtf_id);
1836             }
1837
1838             attrIdx += 2;
1839         }
1840 #undef TRACE_ATTR
1841
1842         ConfigValueUInt(al_string_get_cstr(device->DeviceName), NULL, "frequency", &freq);
1843         freq = maxu(freq, MIN_OUTPUT_RATE);
1844
1845         ConfigValueUInt(al_string_get_cstr(device->DeviceName), NULL, "sends", &numSends);
1846         numSends = minu(MAX_SENDS, numSends);
1847
1848         UpdateClockBase(device);
1849
1850         device->UpdateSize = (ALuint64)device->UpdateSize * freq /
1851                              device->Frequency;
1852         /* SSE and Neon do best with the update size being a multiple of 4 */
1853         if((CPUCapFlags&(CPU_CAP_SSE|CPU_CAP_NEON)) != 0)
1854             device->UpdateSize = (device->UpdateSize+3)&~3;
1855
1856         device->Frequency = freq;
1857         device->NumMonoSources = numMono;
1858         device->NumStereoSources = numStereo;
1859         device->NumAuxSends = numSends;
1860     }
1861
1862     if((device->Flags&DEVICE_RUNNING))
1863         return ALC_NO_ERROR;
1864
1865     al_free(device->Uhj_Encoder);
1866     device->Uhj_Encoder = NULL;
1867
1868     al_free(device->Bs2b);
1869     device->Bs2b = NULL;
1870
1871     al_free(device->Dry.Buffer);
1872     device->Dry.Buffer = NULL;
1873     device->Dry.NumChannels = 0;
1874     device->VirtOut.Buffer = NULL;
1875     device->VirtOut.NumChannels = 0;
1876     device->RealOut.Buffer = NULL;
1877     device->RealOut.NumChannels = 0;
1878
1879     UpdateClockBase(device);
1880
1881     /*************************************************************************
1882      * Update device format request if HRTF is requested
1883      */
1884     device->Hrtf_Status = ALC_HRTF_DISABLED_SOFT;
1885     if(device->Type != Loopback)
1886     {
1887         const char *hrtf;
1888         if(ConfigValueStr(al_string_get_cstr(device->DeviceName), NULL, "hrtf", &hrtf))
1889         {
1890             if(strcasecmp(hrtf, "true") == 0)
1891                 hrtf_userreq = Hrtf_Enable;
1892             else if(strcasecmp(hrtf, "false") == 0)
1893                 hrtf_userreq = Hrtf_Disable;
1894             else if(strcasecmp(hrtf, "auto") != 0)
1895                 ERR("Unexpected hrtf value: %s\n", hrtf);
1896         }
1897
1898         if(hrtf_userreq == Hrtf_Enable || (hrtf_userreq != Hrtf_Disable && hrtf_appreq == Hrtf_Enable))
1899         {
1900             if(VECTOR_SIZE(device->Hrtf_List) == 0)
1901             {
1902                 VECTOR_DEINIT(device->Hrtf_List);
1903                 device->Hrtf_List = EnumerateHrtf(device->DeviceName);
1904             }
1905             if(VECTOR_SIZE(device->Hrtf_List) > 0)
1906             {
1907                 device->FmtChans = DevFmtStereo;
1908                 if(hrtf_id >= 0 && (size_t)hrtf_id < VECTOR_SIZE(device->Hrtf_List))
1909                     device->Frequency = GetHrtfSampleRate(VECTOR_ELEM(device->Hrtf_List, hrtf_id).hrtf);
1910                 else
1911                     device->Frequency = GetHrtfSampleRate(VECTOR_ELEM(device->Hrtf_List, 0).hrtf);
1912                 device->Flags |= DEVICE_CHANNELS_REQUEST | DEVICE_FREQUENCY_REQUEST;
1913             }
1914             else
1915             {
1916                 hrtf_userreq = Hrtf_Default;
1917                 hrtf_appreq = Hrtf_Disable;
1918                 device->Hrtf_Status = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
1919             }
1920         }
1921     }
1922     else if(hrtf_appreq == Hrtf_Enable)
1923     {
1924         size_t i = VECTOR_SIZE(device->Hrtf_List);
1925         /* Loopback device. We don't need to match to a specific HRTF entry
1926          * here. If the requested ID matches, we'll pick that later, if not,
1927          * we'll try to auto-select one anyway. Just make sure one exists
1928          * that'll work.
1929          */
1930         if(device->FmtChans == DevFmtStereo)
1931         {
1932             if(VECTOR_SIZE(device->Hrtf_List) == 0)
1933             {
1934                 VECTOR_DEINIT(device->Hrtf_List);
1935                 device->Hrtf_List = EnumerateHrtf(device->DeviceName);
1936             }
1937             for(i = 0;i < VECTOR_SIZE(device->Hrtf_List);i++)
1938             {
1939                 const struct Hrtf *hrtf = VECTOR_ELEM(device->Hrtf_List, i).hrtf;
1940                 if(GetHrtfSampleRate(hrtf) == device->Frequency)
1941                     break;
1942             }
1943         }
1944         if(i == VECTOR_SIZE(device->Hrtf_List))
1945         {
1946             ERR("Requested format not HRTF compatible: %s, %uhz\n",
1947                 DevFmtChannelsString(device->FmtChans), device->Frequency);
1948             hrtf_appreq = Hrtf_Disable;
1949             device->Hrtf_Status = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
1950         }
1951     }
1952
1953     oldFreq  = device->Frequency;
1954     oldChans = device->FmtChans;
1955     oldType  = device->FmtType;
1956
1957     TRACE("Pre-reset: %s%s, %s%s, %s%uhz, %u update size x%d\n",
1958         (device->Flags&DEVICE_CHANNELS_REQUEST)?"*":"", DevFmtChannelsString(device->FmtChans),
1959         (device->Flags&DEVICE_SAMPLE_TYPE_REQUEST)?"*":"", DevFmtTypeString(device->FmtType),
1960         (device->Flags&DEVICE_FREQUENCY_REQUEST)?"*":"", device->Frequency,
1961         device->UpdateSize, device->NumUpdates
1962     );
1963
1964     if(V0(device->Backend,reset)() == ALC_FALSE)
1965         return ALC_INVALID_DEVICE;
1966
1967     if(device->FmtChans != oldChans && (device->Flags&DEVICE_CHANNELS_REQUEST))
1968     {
1969         ERR("Failed to set %s, got %s instead\n", DevFmtChannelsString(oldChans),
1970             DevFmtChannelsString(device->FmtChans));
1971         device->Flags &= ~DEVICE_CHANNELS_REQUEST;
1972     }
1973     if(device->FmtType != oldType && (device->Flags&DEVICE_SAMPLE_TYPE_REQUEST))
1974     {
1975         ERR("Failed to set %s, got %s instead\n", DevFmtTypeString(oldType),
1976             DevFmtTypeString(device->FmtType));
1977         device->Flags &= ~DEVICE_SAMPLE_TYPE_REQUEST;
1978     }
1979     if(device->Frequency != oldFreq && (device->Flags&DEVICE_FREQUENCY_REQUEST))
1980     {
1981         ERR("Failed to set %uhz, got %uhz instead\n", oldFreq, device->Frequency);
1982         device->Flags &= ~DEVICE_FREQUENCY_REQUEST;
1983     }
1984
1985     if((device->UpdateSize&3) != 0)
1986     {
1987         if((CPUCapFlags&CPU_CAP_SSE))
1988             WARN("SSE performs best with multiple of 4 update sizes (%u)\n", device->UpdateSize);
1989         if((CPUCapFlags&CPU_CAP_NEON))
1990             WARN("NEON performs best with multiple of 4 update sizes (%u)\n", device->UpdateSize);
1991     }
1992
1993     TRACE("Post-reset: %s, %s, %uhz, %u update size x%d\n",
1994         DevFmtChannelsString(device->FmtChans), DevFmtTypeString(device->FmtType),
1995         device->Frequency, device->UpdateSize, device->NumUpdates
1996     );
1997
1998     aluInitRenderer(device, hrtf_id, hrtf_appreq, hrtf_userreq);
1999
2000     /* Allocate extra channels for any post-filter output. */
2001     size = device->Dry.NumChannels * sizeof(device->Dry.Buffer[0]);
2002     if(device->AmbiDecoder && bformatdec_getOrder(device->AmbiDecoder) >= 2)
2003         size += (ChannelsFromDevFmt(device->FmtChans)+4) * sizeof(device->Dry.Buffer[0]);
2004     else if(device->Hrtf || device->Uhj_Encoder || device->AmbiDecoder)
2005         size += ChannelsFromDevFmt(device->FmtChans) * sizeof(device->Dry.Buffer[0]);
2006     device->Dry.Buffer = al_calloc(16, size);
2007     if(!device->Dry.Buffer)
2008     {
2009         ERR("Failed to allocate "SZFMT" bytes for mix buffer\n", size);
2010         return ALC_INVALID_DEVICE;
2011     }
2012
2013     if(device->Hrtf || device->Uhj_Encoder || device->AmbiDecoder)
2014     {
2015         device->VirtOut.Buffer = device->Dry.Buffer;
2016         device->VirtOut.NumChannels = device->Dry.NumChannels;
2017         device->RealOut.Buffer = device->Dry.Buffer + device->Dry.NumChannels;
2018         device->RealOut.NumChannels = ChannelsFromDevFmt(device->FmtChans);
2019     }
2020     else
2021     {
2022         device->VirtOut.Buffer = NULL;
2023         device->VirtOut.NumChannels = 0;
2024         device->RealOut.Buffer = device->Dry.Buffer;
2025         device->RealOut.NumChannels = device->Dry.NumChannels;
2026     }
2027
2028     if(device->AmbiDecoder && bformatdec_getOrder(device->AmbiDecoder) >= 2)
2029     {
2030         /* Higher-order high quality decoding requires upsampling first-order
2031          * content, so make sure to mix it separately.
2032          */
2033         device->FOAOut.Buffer = device->RealOut.Buffer + device->RealOut.NumChannels;
2034         device->FOAOut.NumChannels = 4;
2035     }
2036     else
2037     {
2038         device->FOAOut.Buffer = device->Dry.Buffer;
2039         device->FOAOut.NumChannels = device->Dry.NumChannels;
2040     }
2041
2042     SetMixerFPUMode(&oldMode);
2043     if(device->DefaultSlot)
2044     {
2045         ALeffectslot *slot = device->DefaultSlot;
2046         ALeffectState *state = slot->Effect.State;
2047
2048         state->OutBuffer = device->Dry.Buffer;
2049         state->OutChannels = device->Dry.NumChannels;
2050         if(V(state,deviceUpdate)(device) == AL_FALSE)
2051         {
2052             RestoreFPUMode(&oldMode);
2053             return ALC_INVALID_DEVICE;
2054         }
2055         UpdateEffectSlotProps(slot);
2056     }
2057
2058     context = ATOMIC_LOAD(&device->ContextList);
2059     while(context)
2060     {
2061         ALsizei pos;
2062
2063         ReadLock(&context->PropLock);
2064         LockUIntMapRead(&context->EffectSlotMap);
2065         for(pos = 0;pos < context->EffectSlotMap.size;pos++)
2066         {
2067             ALeffectslot *slot = context->EffectSlotMap.array[pos].value;
2068             ALeffectState *state = slot->Effect.State;
2069
2070             state->OutBuffer = device->Dry.Buffer;
2071             state->OutChannels = device->Dry.NumChannels;
2072             if(V(state,deviceUpdate)(device) == AL_FALSE)
2073             {
2074                 UnlockUIntMapRead(&context->EffectSlotMap);
2075                 ReadUnlock(&context->PropLock);
2076                 RestoreFPUMode(&oldMode);
2077                 return ALC_INVALID_DEVICE;
2078             }
2079
2080             UpdateEffectSlotProps(slot);
2081         }
2082         UnlockUIntMapRead(&context->EffectSlotMap);
2083
2084         LockUIntMapRead(&context->SourceMap);
2085         for(pos = 0;pos < context->SourceMap.size;pos++)
2086         {
2087             ALsource *source = context->SourceMap.array[pos].value;
2088             ALuint s = device->NumAuxSends;
2089             while(s < MAX_SENDS)
2090             {
2091                 if(source->Send[s].Slot)
2092                     DecrementRef(&source->Send[s].Slot->ref);
2093                 source->Send[s].Slot = NULL;
2094                 source->Send[s].Gain = 1.0f;
2095                 source->Send[s].GainHF = 1.0f;
2096                 source->Send[s].HFReference = LOWPASSFREQREF;
2097                 source->Send[s].GainLF = 1.0f;
2098                 source->Send[s].LFReference = HIGHPASSFREQREF;
2099                 s++;
2100             }
2101         }
2102         UnlockUIntMapRead(&context->SourceMap);
2103
2104         UpdateAllSourceProps(context);
2105         ReadUnlock(&context->PropLock);
2106
2107         context = context->next;
2108     }
2109     RestoreFPUMode(&oldMode);
2110
2111     if(!(device->Flags&DEVICE_PAUSED))
2112     {
2113         if(V0(device->Backend,start)() == ALC_FALSE)
2114             return ALC_INVALID_DEVICE;
2115         device->Flags |= DEVICE_RUNNING;
2116     }
2117
2118     return ALC_NO_ERROR;
2119 }
2120
2121 /* FreeDevice
2122  *
2123  * Frees the device structure, and destroys any objects the app failed to
2124  * delete. Called once there's no more references on the device.
2125  */
2126 static ALCvoid FreeDevice(ALCdevice *device)
2127 {
2128     TRACE("%p\n", device);
2129
2130     V0(device->Backend,close)();
2131     DELETE_OBJ(device->Backend);
2132     device->Backend = NULL;
2133
2134     almtx_destroy(&device->BackendLock);
2135
2136     if(device->DefaultSlot)
2137     {
2138         DeinitEffectSlot(device->DefaultSlot);
2139         device->DefaultSlot = NULL;
2140     }
2141
2142     if(device->BufferMap.size > 0)
2143     {
2144         WARN("(%p) Deleting %d Buffer%s\n", device, device->BufferMap.size,
2145              (device->BufferMap.size==1)?"":"s");
2146         ReleaseALBuffers(device);
2147     }
2148     ResetUIntMap(&device->BufferMap);
2149
2150     if(device->EffectMap.size > 0)
2151     {
2152         WARN("(%p) Deleting %d Effect%s\n", device, device->EffectMap.size,
2153              (device->EffectMap.size==1)?"":"s");
2154         ReleaseALEffects(device);
2155     }
2156     ResetUIntMap(&device->EffectMap);
2157
2158     if(device->FilterMap.size > 0)
2159     {
2160         WARN("(%p) Deleting %d Filter%s\n", device, device->FilterMap.size,
2161              (device->FilterMap.size==1)?"":"s");
2162         ReleaseALFilters(device);
2163     }
2164     ResetUIntMap(&device->FilterMap);
2165
2166     AL_STRING_DEINIT(device->Hrtf_Name);
2167     FreeHrtfList(&device->Hrtf_List);
2168
2169     al_free(device->Bs2b);
2170     device->Bs2b = NULL;
2171
2172     al_free(device->Uhj_Encoder);
2173     device->Uhj_Encoder = NULL;
2174
2175     bformatdec_free(device->AmbiDecoder);
2176     device->AmbiDecoder = NULL;
2177
2178     AL_STRING_DEINIT(device->DeviceName);
2179
2180     al_free(device->Dry.Buffer);
2181     device->Dry.Buffer = NULL;
2182     device->Dry.NumChannels = 0;
2183     device->VirtOut.Buffer = NULL;
2184     device->VirtOut.NumChannels = 0;
2185     device->RealOut.Buffer = NULL;
2186     device->RealOut.NumChannels = 0;
2187
2188     al_free(device);
2189 }
2190
2191
2192 void ALCdevice_IncRef(ALCdevice *device)
2193 {
2194     uint ref;
2195     ref = IncrementRef(&device->ref);
2196     TRACEREF("%p increasing refcount to %u\n", device, ref);
2197 }
2198
2199 void ALCdevice_DecRef(ALCdevice *device)
2200 {
2201     uint ref;
2202     ref = DecrementRef(&device->ref);
2203     TRACEREF("%p decreasing refcount to %u\n", device, ref);
2204     if(ref == 0) FreeDevice(device);
2205 }
2206
2207 /* VerifyDevice
2208  *
2209  * Checks if the device handle is valid, and increments its ref count if so.
2210  */
2211 static ALCboolean VerifyDevice(ALCdevice **device)
2212 {
2213     ALCdevice *tmpDevice;
2214
2215     LockLists();
2216     tmpDevice = ATOMIC_LOAD(&DeviceList);
2217     while(tmpDevice)
2218     {
2219         if(tmpDevice == *device)
2220         {
2221             ALCdevice_IncRef(tmpDevice);
2222             UnlockLists();
2223             return ALC_TRUE;
2224         }
2225         tmpDevice = tmpDevice->next;
2226     }
2227     UnlockLists();
2228
2229     *device = NULL;
2230     return ALC_FALSE;
2231 }
2232
2233
2234 /* InitContext
2235  *
2236  * Initializes context fields
2237  */
2238 static ALvoid InitContext(ALCcontext *Context)
2239 {
2240     ALlistener *listener = Context->Listener;
2241
2242     //Initialise listener
2243     listener->Gain = 1.0f;
2244     listener->MetersPerUnit = 1.0f;
2245     listener->Position[0] = 0.0f;
2246     listener->Position[1] = 0.0f;
2247     listener->Position[2] = 0.0f;
2248     listener->Velocity[0] = 0.0f;
2249     listener->Velocity[1] = 0.0f;
2250     listener->Velocity[2] = 0.0f;
2251     listener->Forward[0] = 0.0f;
2252     listener->Forward[1] = 0.0f;
2253     listener->Forward[2] = -1.0f;
2254     listener->Up[0] = 0.0f;
2255     listener->Up[1] = 1.0f;
2256     listener->Up[2] = 0.0f;
2257
2258     aluMatrixfSet(&listener->Params.Matrix,
2259         1.0f, 0.0f, 0.0f, 0.0f,
2260         0.0f, 1.0f, 0.0f, 0.0f,
2261         0.0f, 0.0f, 1.0f, 0.0f,
2262         0.0f, 0.0f, 0.0f, 1.0f
2263     );
2264     aluVectorSet(&listener->Params.Velocity, 0.0f, 0.0f, 0.0f, 0.0f);
2265     listener->Params.Gain = 1.0f;
2266     listener->Params.MetersPerUnit = 1.0f;
2267     listener->Params.DopplerFactor = 1.0f;
2268     listener->Params.SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
2269
2270     ATOMIC_INIT(&listener->Update, NULL);
2271     ATOMIC_INIT(&listener->FreeList, NULL);
2272
2273     //Validate Context
2274     InitRef(&Context->UpdateCount, 0);
2275     ATOMIC_INIT(&Context->HoldUpdates, AL_FALSE);
2276     RWLockInit(&Context->PropLock);
2277     ATOMIC_INIT(&Context->LastError, AL_NO_ERROR);
2278     InitUIntMap(&Context->SourceMap, Context->Device->MaxNoOfSources);
2279     InitUIntMap(&Context->EffectSlotMap, Context->Device->AuxiliaryEffectSlotMax);
2280
2281     //Set globals
2282     Context->DistanceModel = DefaultDistanceModel;
2283     Context->SourceDistanceModel = AL_FALSE;
2284     Context->DopplerFactor = 1.0f;
2285     Context->DopplerVelocity = 1.0f;
2286     Context->SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
2287     ATOMIC_INIT(&Context->DeferUpdates, AL_FALSE);
2288
2289     Context->ExtensionList = alExtList;
2290 }
2291
2292
2293 /* FreeContext
2294  *
2295  * Cleans up the context, and destroys any remaining objects the app failed to
2296  * delete. Called once there's no more references on the context.
2297  */
2298 static void FreeContext(ALCcontext *context)
2299 {
2300     ALlistener *listener = context->Listener;
2301     struct ALlistenerProps *lprops;
2302     size_t count;
2303
2304     TRACE("%p\n", context);
2305
2306     if(context->SourceMap.size > 0)
2307     {
2308         WARN("(%p) Deleting %d Source%s\n", context, context->SourceMap.size,
2309              (context->SourceMap.size==1)?"":"s");
2310         ReleaseALSources(context);
2311     }
2312     ResetUIntMap(&context->SourceMap);
2313
2314     if(context->EffectSlotMap.size > 0)
2315     {
2316         WARN("(%p) Deleting %d AuxiliaryEffectSlot%s\n", context, context->EffectSlotMap.size,
2317              (context->EffectSlotMap.size==1)?"":"s");
2318         ReleaseALAuxiliaryEffectSlots(context);
2319     }
2320     ResetUIntMap(&context->EffectSlotMap);
2321
2322     al_free(context->Voices);
2323     context->Voices = NULL;
2324     context->VoiceCount = 0;
2325     context->MaxVoices = 0;
2326
2327     if((lprops=ATOMIC_LOAD(&listener->Update, almemory_order_acquire)) != NULL)
2328     {
2329         TRACE("Freed unapplied listener update %p\n", lprops);
2330         al_free(lprops);
2331     }
2332     count = 0;
2333     lprops = ATOMIC_LOAD(&listener->FreeList, almemory_order_consume);
2334     while(lprops)
2335     {
2336         struct ALlistenerProps *next = ATOMIC_LOAD(&lprops->next, almemory_order_consume);
2337         al_free(lprops);
2338         lprops = next;
2339         ++count;
2340     }
2341     TRACE("Freed "SZFMT" listener property object%s\n", count, (count==1)?"":"s");
2342
2343     ALCdevice_DecRef(context->Device);
2344     context->Device = NULL;
2345
2346     //Invalidate context
2347     memset(context, 0, sizeof(ALCcontext));
2348     al_free(context);
2349 }
2350
2351 /* ReleaseContext
2352  *
2353  * Removes the context reference from the given device and removes it from
2354  * being current on the running thread or globally.
2355  */
2356 static void ReleaseContext(ALCcontext *context, ALCdevice *device)
2357 {
2358     ALCcontext *nextctx;
2359     ALCcontext *origctx;
2360
2361     if(altss_get(LocalContext) == context)
2362     {
2363         WARN("%p released while current on thread\n", context);
2364         altss_set(LocalContext, NULL);
2365         ALCcontext_DecRef(context);
2366     }
2367
2368     origctx = context;
2369     if(ATOMIC_COMPARE_EXCHANGE_STRONG(ALCcontext*, &GlobalContext, &origctx, NULL))
2370         ALCcontext_DecRef(context);
2371
2372     ALCdevice_Lock(device);
2373     origctx = context;
2374     nextctx = context->next;
2375     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCcontext*, &device->ContextList, &origctx, nextctx))
2376     {
2377         ALCcontext *list;
2378         do {
2379             list = origctx;
2380             origctx = context;
2381         } while(!COMPARE_EXCHANGE(&list->next, &origctx, nextctx));
2382     }
2383     ALCdevice_Unlock(device);
2384
2385     ALCcontext_DecRef(context);
2386 }
2387
2388 void ALCcontext_IncRef(ALCcontext *context)
2389 {
2390     uint ref;
2391     ref = IncrementRef(&context->ref);
2392     TRACEREF("%p increasing refcount to %u\n", context, ref);
2393 }
2394
2395 void ALCcontext_DecRef(ALCcontext *context)
2396 {
2397     uint ref;
2398     ref = DecrementRef(&context->ref);
2399     TRACEREF("%p decreasing refcount to %u\n", context, ref);
2400     if(ref == 0) FreeContext(context);
2401 }
2402
2403 static void ReleaseThreadCtx(void *ptr)
2404 {
2405     WARN("%p current for thread being destroyed\n", ptr);
2406     ALCcontext_DecRef(ptr);
2407 }
2408
2409 /* VerifyContext
2410  *
2411  * Checks that the given context is valid, and increments its reference count.
2412  */
2413 static ALCboolean VerifyContext(ALCcontext **context)
2414 {
2415     ALCdevice *dev;
2416
2417     LockLists();
2418     dev = ATOMIC_LOAD(&DeviceList);
2419     while(dev)
2420     {
2421         ALCcontext *ctx = ATOMIC_LOAD(&dev->ContextList);
2422         while(ctx)
2423         {
2424             if(ctx == *context)
2425             {
2426                 ALCcontext_IncRef(ctx);
2427                 UnlockLists();
2428                 return ALC_TRUE;
2429             }
2430             ctx = ctx->next;
2431         }
2432         dev = dev->next;
2433     }
2434     UnlockLists();
2435
2436     *context = NULL;
2437     return ALC_FALSE;
2438 }
2439
2440
2441 /* GetContextRef
2442  *
2443  * Returns the currently active context for this thread, and adds a reference
2444  * without locking it.
2445  */
2446 ALCcontext *GetContextRef(void)
2447 {
2448     ALCcontext *context;
2449
2450     context = altss_get(LocalContext);
2451     if(context)
2452         ALCcontext_IncRef(context);
2453     else
2454     {
2455         LockLists();
2456         context = ATOMIC_LOAD(&GlobalContext);
2457         if(context)
2458             ALCcontext_IncRef(context);
2459         UnlockLists();
2460     }
2461
2462     return context;
2463 }
2464
2465
2466 /************************************************
2467  * Standard ALC functions
2468  ************************************************/
2469
2470 /* alcGetError
2471  *
2472  * Return last ALC generated error code for the given device
2473 */
2474 ALC_API ALCenum ALC_APIENTRY alcGetError(ALCdevice *device)
2475 {
2476     ALCenum errorCode;
2477
2478     if(VerifyDevice(&device))
2479     {
2480         errorCode = ATOMIC_EXCHANGE(ALCenum, &device->LastError, ALC_NO_ERROR);
2481         ALCdevice_DecRef(device);
2482     }
2483     else
2484         errorCode = ATOMIC_EXCHANGE(ALCenum, &LastNullDeviceError, ALC_NO_ERROR);
2485
2486     return errorCode;
2487 }
2488
2489
2490 /* alcSuspendContext
2491  *
2492  * Suspends updates for the given context
2493  */
2494 ALC_API ALCvoid ALC_APIENTRY alcSuspendContext(ALCcontext *context)
2495 {
2496     if(!SuspendDefers)
2497         return;
2498
2499     if(!VerifyContext(&context))
2500         alcSetError(NULL, ALC_INVALID_CONTEXT);
2501     else
2502     {
2503         ALCcontext_DeferUpdates(context);
2504         ALCcontext_DecRef(context);
2505     }
2506 }
2507
2508 /* alcProcessContext
2509  *
2510  * Resumes processing updates for the given context
2511  */
2512 ALC_API ALCvoid ALC_APIENTRY alcProcessContext(ALCcontext *context)
2513 {
2514     if(!SuspendDefers)
2515         return;
2516
2517     if(!VerifyContext(&context))
2518         alcSetError(NULL, ALC_INVALID_CONTEXT);
2519     else
2520     {
2521         ALCcontext_ProcessUpdates(context);
2522         ALCcontext_DecRef(context);
2523     }
2524 }
2525
2526
2527 /* alcGetString
2528  *
2529  * Returns information about the device, and error strings
2530  */
2531 ALC_API const ALCchar* ALC_APIENTRY alcGetString(ALCdevice *Device, ALCenum param)
2532 {
2533     const ALCchar *value = NULL;
2534
2535     switch(param)
2536     {
2537     case ALC_NO_ERROR:
2538         value = alcNoError;
2539         break;
2540
2541     case ALC_INVALID_ENUM:
2542         value = alcErrInvalidEnum;
2543         break;
2544
2545     case ALC_INVALID_VALUE:
2546         value = alcErrInvalidValue;
2547         break;
2548
2549     case ALC_INVALID_DEVICE:
2550         value = alcErrInvalidDevice;
2551         break;
2552
2553     case ALC_INVALID_CONTEXT:
2554         value = alcErrInvalidContext;
2555         break;
2556
2557     case ALC_OUT_OF_MEMORY:
2558         value = alcErrOutOfMemory;
2559         break;
2560
2561     case ALC_DEVICE_SPECIFIER:
2562         value = alcDefaultName;
2563         break;
2564
2565     case ALC_ALL_DEVICES_SPECIFIER:
2566         if(VerifyDevice(&Device))
2567         {
2568             value = al_string_get_cstr(Device->DeviceName);
2569             ALCdevice_DecRef(Device);
2570         }
2571         else
2572         {
2573             ProbeAllDevicesList();
2574             value = al_string_get_cstr(alcAllDevicesList);
2575         }
2576         break;
2577
2578     case ALC_CAPTURE_DEVICE_SPECIFIER:
2579         if(VerifyDevice(&Device))
2580         {
2581             value = al_string_get_cstr(Device->DeviceName);
2582             ALCdevice_DecRef(Device);
2583         }
2584         else
2585         {
2586             ProbeCaptureDeviceList();
2587             value = al_string_get_cstr(alcCaptureDeviceList);
2588         }
2589         break;
2590
2591     /* Default devices are always first in the list */
2592     case ALC_DEFAULT_DEVICE_SPECIFIER:
2593         value = alcDefaultName;
2594         break;
2595
2596     case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
2597         if(al_string_empty(alcAllDevicesList))
2598             ProbeAllDevicesList();
2599
2600         VerifyDevice(&Device);
2601
2602         free(alcDefaultAllDevicesSpecifier);
2603         alcDefaultAllDevicesSpecifier = strdup(al_string_get_cstr(alcAllDevicesList));
2604         if(!alcDefaultAllDevicesSpecifier)
2605             alcSetError(Device, ALC_OUT_OF_MEMORY);
2606
2607         value = alcDefaultAllDevicesSpecifier;
2608         if(Device) ALCdevice_DecRef(Device);
2609         break;
2610
2611     case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
2612         if(al_string_empty(alcCaptureDeviceList))
2613             ProbeCaptureDeviceList();
2614
2615         VerifyDevice(&Device);
2616
2617         free(alcCaptureDefaultDeviceSpecifier);
2618         alcCaptureDefaultDeviceSpecifier = strdup(al_string_get_cstr(alcCaptureDeviceList));
2619         if(!alcCaptureDefaultDeviceSpecifier)
2620             alcSetError(Device, ALC_OUT_OF_MEMORY);
2621
2622         value = alcCaptureDefaultDeviceSpecifier;
2623         if(Device) ALCdevice_DecRef(Device);
2624         break;
2625
2626     case ALC_EXTENSIONS:
2627         if(!VerifyDevice(&Device))
2628             value = alcNoDeviceExtList;
2629         else
2630         {
2631             value = alcExtensionList;
2632             ALCdevice_DecRef(Device);
2633         }
2634         break;
2635
2636     case ALC_HRTF_SPECIFIER_SOFT:
2637         if(!VerifyDevice(&Device))
2638             alcSetError(NULL, ALC_INVALID_DEVICE);
2639         else
2640         {
2641             almtx_lock(&Device->BackendLock);
2642             value = (Device->Hrtf ? al_string_get_cstr(Device->Hrtf_Name) : "");
2643             almtx_unlock(&Device->BackendLock);
2644             ALCdevice_DecRef(Device);
2645         }
2646         break;
2647
2648     default:
2649         VerifyDevice(&Device);
2650         alcSetError(Device, ALC_INVALID_ENUM);
2651         if(Device) ALCdevice_DecRef(Device);
2652         break;
2653     }
2654
2655     return value;
2656 }
2657
2658
2659 static ALCsizei GetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
2660 {
2661     ALCsizei i;
2662
2663     if(size <= 0 || values == NULL)
2664     {
2665         alcSetError(device, ALC_INVALID_VALUE);
2666         return 0;
2667     }
2668
2669     if(!device)
2670     {
2671         switch(param)
2672         {
2673             case ALC_MAJOR_VERSION:
2674                 values[0] = alcMajorVersion;
2675                 return 1;
2676             case ALC_MINOR_VERSION:
2677                 values[0] = alcMinorVersion;
2678                 return 1;
2679
2680             case ALC_ATTRIBUTES_SIZE:
2681             case ALC_ALL_ATTRIBUTES:
2682             case ALC_FREQUENCY:
2683             case ALC_REFRESH:
2684             case ALC_SYNC:
2685             case ALC_MONO_SOURCES:
2686             case ALC_STEREO_SOURCES:
2687             case ALC_CAPTURE_SAMPLES:
2688             case ALC_FORMAT_CHANNELS_SOFT:
2689             case ALC_FORMAT_TYPE_SOFT:
2690                 alcSetError(NULL, ALC_INVALID_DEVICE);
2691                 return 0;
2692
2693             default:
2694                 alcSetError(NULL, ALC_INVALID_ENUM);
2695                 return 0;
2696         }
2697         return 0;
2698     }
2699
2700     if(device->Type == Capture)
2701     {
2702         switch(param)
2703         {
2704             case ALC_CAPTURE_SAMPLES:
2705                 almtx_lock(&device->BackendLock);
2706                 values[0] = V0(device->Backend,availableSamples)();
2707                 almtx_unlock(&device->BackendLock);
2708                 return 1;
2709
2710             case ALC_CONNECTED:
2711                 values[0] = device->Connected;
2712                 return 1;
2713
2714             default:
2715                 alcSetError(device, ALC_INVALID_ENUM);
2716                 return 0;
2717         }
2718         return 0;
2719     }
2720
2721     /* render device */
2722     switch(param)
2723     {
2724         case ALC_MAJOR_VERSION:
2725             values[0] = alcMajorVersion;
2726             return 1;
2727
2728         case ALC_MINOR_VERSION:
2729             values[0] = alcMinorVersion;
2730             return 1;
2731
2732         case ALC_EFX_MAJOR_VERSION:
2733             values[0] = alcEFXMajorVersion;
2734             return 1;
2735
2736         case ALC_EFX_MINOR_VERSION:
2737             values[0] = alcEFXMinorVersion;
2738             return 1;
2739
2740         case ALC_ATTRIBUTES_SIZE:
2741             values[0] = 17;
2742             return 1;
2743
2744         case ALC_ALL_ATTRIBUTES:
2745             if(size < 17)
2746             {
2747                 alcSetError(device, ALC_INVALID_VALUE);
2748                 return 0;
2749             }
2750
2751             i = 0;
2752             almtx_lock(&device->BackendLock);
2753             values[i++] = ALC_FREQUENCY;
2754             values[i++] = device->Frequency;
2755
2756             if(device->Type != Loopback)
2757             {
2758                 values[i++] = ALC_REFRESH;
2759                 values[i++] = device->Frequency / device->UpdateSize;
2760
2761                 values[i++] = ALC_SYNC;
2762                 values[i++] = ALC_FALSE;
2763             }
2764             else
2765             {
2766                 values[i++] = ALC_FORMAT_CHANNELS_SOFT;
2767                 values[i++] = device->FmtChans;
2768
2769                 values[i++] = ALC_FORMAT_TYPE_SOFT;
2770                 values[i++] = device->FmtType;
2771             }
2772
2773             values[i++] = ALC_MONO_SOURCES;
2774             values[i++] = device->NumMonoSources;
2775
2776             values[i++] = ALC_STEREO_SOURCES;
2777             values[i++] = device->NumStereoSources;
2778
2779             values[i++] = ALC_MAX_AUXILIARY_SENDS;
2780             values[i++] = device->NumAuxSends;
2781
2782             values[i++] = ALC_HRTF_SOFT;
2783             values[i++] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2784
2785             values[i++] = ALC_HRTF_STATUS_SOFT;
2786             values[i++] = device->Hrtf_Status;
2787             almtx_unlock(&device->BackendLock);
2788
2789             values[i++] = 0;
2790             return i;
2791
2792         case ALC_FREQUENCY:
2793             values[0] = device->Frequency;
2794             return 1;
2795
2796         case ALC_REFRESH:
2797             if(device->Type == Loopback)
2798             {
2799                 alcSetError(device, ALC_INVALID_DEVICE);
2800                 return 0;
2801             }
2802             almtx_lock(&device->BackendLock);
2803             values[0] = device->Frequency / device->UpdateSize;
2804             almtx_unlock(&device->BackendLock);
2805             return 1;
2806
2807         case ALC_SYNC:
2808             if(device->Type == Loopback)
2809             {
2810                 alcSetError(device, ALC_INVALID_DEVICE);
2811                 return 0;
2812             }
2813             values[0] = ALC_FALSE;
2814             return 1;
2815
2816         case ALC_FORMAT_CHANNELS_SOFT:
2817             if(device->Type != Loopback)
2818             {
2819                 alcSetError(device, ALC_INVALID_DEVICE);
2820                 return 0;
2821             }
2822             values[0] = device->FmtChans;
2823             return 1;
2824
2825         case ALC_FORMAT_TYPE_SOFT:
2826             if(device->Type != Loopback)
2827             {
2828                 alcSetError(device, ALC_INVALID_DEVICE);
2829                 return 0;
2830             }
2831             values[0] = device->FmtType;
2832             return 1;
2833
2834         case ALC_MONO_SOURCES:
2835             values[0] = device->NumMonoSources;
2836             return 1;
2837
2838         case ALC_STEREO_SOURCES:
2839             values[0] = device->NumStereoSources;
2840             return 1;
2841
2842         case ALC_MAX_AUXILIARY_SENDS:
2843             values[0] = device->NumAuxSends;
2844             return 1;
2845
2846         case ALC_CONNECTED:
2847             values[0] = device->Connected;
2848             return 1;
2849
2850         case ALC_HRTF_SOFT:
2851             values[0] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2852             return 1;
2853
2854         case ALC_HRTF_STATUS_SOFT:
2855             values[0] = device->Hrtf_Status;
2856             return 1;
2857
2858         case ALC_NUM_HRTF_SPECIFIERS_SOFT:
2859             almtx_lock(&device->BackendLock);
2860             FreeHrtfList(&device->Hrtf_List);
2861             device->Hrtf_List = EnumerateHrtf(device->DeviceName);
2862             values[0] = (ALCint)VECTOR_SIZE(device->Hrtf_List);
2863             almtx_unlock(&device->BackendLock);
2864             return 1;
2865
2866         default:
2867             alcSetError(device, ALC_INVALID_ENUM);
2868             return 0;
2869     }
2870     return 0;
2871 }
2872
2873 /* alcGetIntegerv
2874  *
2875  * Returns information about the device and the version of OpenAL
2876  */
2877 ALC_API void ALC_APIENTRY alcGetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
2878 {
2879     VerifyDevice(&device);
2880     if(size <= 0 || values == NULL)
2881         alcSetError(device, ALC_INVALID_VALUE);
2882     else
2883         GetIntegerv(device, param, size, values);
2884     if(device) ALCdevice_DecRef(device);
2885 }
2886
2887 ALC_API void ALC_APIENTRY alcGetInteger64vSOFT(ALCdevice *device, ALCenum pname, ALCsizei size, ALCint64SOFT *values)
2888 {
2889     ALCint *ivals;
2890     ALsizei i;
2891
2892     VerifyDevice(&device);
2893     if(size <= 0 || values == NULL)
2894         alcSetError(device, ALC_INVALID_VALUE);
2895     else if(!device || device->Type == Capture)
2896     {
2897         ivals = malloc(size * sizeof(ALCint));
2898         size = GetIntegerv(device, pname, size, ivals);
2899         for(i = 0;i < size;i++)
2900             values[i] = ivals[i];
2901         free(ivals);
2902     }
2903     else /* render device */
2904     {
2905         ALuint64 basecount;
2906         ALuint samplecount;
2907         ALuint refcount;
2908
2909         switch(pname)
2910         {
2911             case ALC_ATTRIBUTES_SIZE:
2912                 *values = 19;
2913                 break;
2914
2915             case ALC_ALL_ATTRIBUTES:
2916                 if(size < 19)
2917                     alcSetError(device, ALC_INVALID_VALUE);
2918                 else
2919                 {
2920                     int i = 0;
2921
2922                     almtx_lock(&device->BackendLock);
2923                     values[i++] = ALC_FREQUENCY;
2924                     values[i++] = device->Frequency;
2925
2926                     if(device->Type != Loopback)
2927                     {
2928                         values[i++] = ALC_REFRESH;
2929                         values[i++] = device->Frequency / device->UpdateSize;
2930
2931                         values[i++] = ALC_SYNC;
2932                         values[i++] = ALC_FALSE;
2933                     }
2934                     else
2935                     {
2936                         values[i++] = ALC_FORMAT_CHANNELS_SOFT;
2937                         values[i++] = device->FmtChans;
2938
2939                         values[i++] = ALC_FORMAT_TYPE_SOFT;
2940                         values[i++] = device->FmtType;
2941                     }
2942
2943                     values[i++] = ALC_MONO_SOURCES;
2944                     values[i++] = device->NumMonoSources;
2945
2946                     values[i++] = ALC_STEREO_SOURCES;
2947                     values[i++] = device->NumStereoSources;
2948
2949                     values[i++] = ALC_MAX_AUXILIARY_SENDS;
2950                     values[i++] = device->NumAuxSends;
2951
2952                     values[i++] = ALC_HRTF_SOFT;
2953                     values[i++] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2954
2955                     values[i++] = ALC_HRTF_STATUS_SOFT;
2956                     values[i++] = device->Hrtf_Status;
2957
2958                     values[i++] = ALC_DEVICE_CLOCK_SOFT;
2959                     do {
2960                         while(((refcount=ReadRef(&device->MixCount))&1) != 0)
2961                             althrd_yield();
2962                         basecount = device->ClockBase;
2963                         samplecount = device->SamplesDone;
2964                     } while(refcount != ReadRef(&device->MixCount));
2965                     values[i++] = basecount + (samplecount*DEVICE_CLOCK_RES/device->Frequency);
2966                     almtx_unlock(&device->BackendLock);
2967
2968                     values[i++] = 0;
2969                 }
2970                 break;
2971
2972             case ALC_DEVICE_CLOCK_SOFT:
2973                 almtx_lock(&device->BackendLock);
2974                 do {
2975                     while(((refcount=ReadRef(&device->MixCount))&1) != 0)
2976                         althrd_yield();
2977                     basecount = device->ClockBase;
2978                     samplecount = device->SamplesDone;
2979                 } while(refcount != ReadRef(&device->MixCount));
2980                 *values = basecount + (samplecount*DEVICE_CLOCK_RES/device->Frequency);
2981                 almtx_unlock(&device->BackendLock);
2982                 break;
2983
2984             default:
2985                 ivals = malloc(size * sizeof(ALCint));
2986                 size = GetIntegerv(device, pname, size, ivals);
2987                 for(i = 0;i < size;i++)
2988                     values[i] = ivals[i];
2989                 free(ivals);
2990                 break;
2991         }
2992     }
2993     if(device)
2994         ALCdevice_DecRef(device);
2995 }
2996
2997
2998 /* alcIsExtensionPresent
2999  *
3000  * Determines if there is support for a particular extension
3001  */
3002 ALC_API ALCboolean ALC_APIENTRY alcIsExtensionPresent(ALCdevice *device, const ALCchar *extName)
3003 {
3004     ALCboolean bResult = ALC_FALSE;
3005
3006     VerifyDevice(&device);
3007
3008     if(!extName)
3009         alcSetError(device, ALC_INVALID_VALUE);
3010     else
3011     {
3012         size_t len = strlen(extName);
3013         const char *ptr = (device ? alcExtensionList : alcNoDeviceExtList);
3014         while(ptr && *ptr)
3015         {
3016             if(strncasecmp(ptr, extName, len) == 0 &&
3017                (ptr[len] == '\0' || isspace(ptr[len])))
3018             {
3019                 bResult = ALC_TRUE;
3020                 break;
3021             }
3022             if((ptr=strchr(ptr, ' ')) != NULL)
3023             {
3024                 do {
3025                     ++ptr;
3026                 } while(isspace(*ptr));
3027             }
3028         }
3029     }
3030     if(device)
3031         ALCdevice_DecRef(device);
3032     return bResult;
3033 }
3034
3035
3036 /* alcGetProcAddress
3037  *
3038  * Retrieves the function address for a particular extension function
3039  */
3040 ALC_API ALCvoid* ALC_APIENTRY alcGetProcAddress(ALCdevice *device, const ALCchar *funcName)
3041 {
3042     ALCvoid *ptr = NULL;
3043
3044     if(!funcName)
3045     {
3046         VerifyDevice(&device);
3047         alcSetError(device, ALC_INVALID_VALUE);
3048         if(device) ALCdevice_DecRef(device);
3049     }
3050     else
3051     {
3052         ALsizei i = 0;
3053         while(alcFunctions[i].funcName && strcmp(alcFunctions[i].funcName, funcName) != 0)
3054             i++;
3055         ptr = alcFunctions[i].address;
3056     }
3057
3058     return ptr;
3059 }
3060
3061
3062 /* alcGetEnumValue
3063  *
3064  * Get the value for a particular ALC enumeration name
3065  */
3066 ALC_API ALCenum ALC_APIENTRY alcGetEnumValue(ALCdevice *device, const ALCchar *enumName)
3067 {
3068     ALCenum val = 0;
3069
3070     if(!enumName)
3071     {
3072         VerifyDevice(&device);
3073         alcSetError(device, ALC_INVALID_VALUE);
3074         if(device) ALCdevice_DecRef(device);
3075     }
3076     else
3077     {
3078         ALsizei i = 0;
3079         while(enumeration[i].enumName && strcmp(enumeration[i].enumName, enumName) != 0)
3080             i++;
3081         val = enumeration[i].value;
3082     }
3083
3084     return val;
3085 }
3086
3087
3088 /* alcCreateContext
3089  *
3090  * Create and attach a context to the given device.
3091  */
3092 ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCint *attrList)
3093 {
3094     ALCcontext *ALContext;
3095     ALCenum err;
3096
3097     LockLists();
3098     if(!VerifyDevice(&device) || device->Type == Capture || !device->Connected)
3099     {
3100         UnlockLists();
3101         alcSetError(device, ALC_INVALID_DEVICE);
3102         if(device) ALCdevice_DecRef(device);
3103         return NULL;
3104     }
3105     almtx_lock(&device->BackendLock);
3106     UnlockLists();
3107
3108     ATOMIC_STORE(&device->LastError, ALC_NO_ERROR);
3109
3110     ALContext = al_calloc(16, sizeof(ALCcontext)+sizeof(ALlistener));
3111     if(ALContext)
3112     {
3113         InitRef(&ALContext->ref, 1);
3114         ALContext->Listener = (ALlistener*)ALContext->_listener_mem;
3115
3116         ATOMIC_INIT(&ALContext->ActiveAuxSlotList, NULL);
3117
3118         ALContext->VoiceCount = 0;
3119         ALContext->MaxVoices = 256;
3120         ALContext->Voices = al_calloc(16, ALContext->MaxVoices * sizeof(ALContext->Voices[0]));
3121     }
3122     if(!ALContext || !ALContext->Voices)
3123     {
3124         almtx_unlock(&device->BackendLock);
3125
3126         if(ALContext)
3127         {
3128             al_free(ALContext->Voices);
3129             ALContext->Voices = NULL;
3130
3131             al_free(ALContext);
3132             ALContext = NULL;
3133         }
3134
3135         alcSetError(device, ALC_OUT_OF_MEMORY);
3136         ALCdevice_DecRef(device);
3137         return NULL;
3138     }
3139
3140     if((err=UpdateDeviceParams(device, attrList)) != ALC_NO_ERROR)
3141     {
3142         almtx_unlock(&device->BackendLock);
3143
3144         al_free(ALContext->Voices);
3145         ALContext->Voices = NULL;
3146
3147         al_free(ALContext);
3148         ALContext = NULL;
3149
3150         alcSetError(device, err);
3151         if(err == ALC_INVALID_DEVICE)
3152         {
3153             V0(device->Backend,lock)();
3154             aluHandleDisconnect(device);
3155             V0(device->Backend,unlock)();
3156         }
3157         ALCdevice_DecRef(device);
3158         return NULL;
3159     }
3160
3161     ALContext->Device = device;
3162     ALCdevice_IncRef(device);
3163     InitContext(ALContext);
3164
3165     {
3166         ALCcontext *head = ATOMIC_LOAD(&device->ContextList);
3167         do {
3168             ALContext->next = head;
3169         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCcontext*, &device->ContextList, &head, ALContext));
3170     }
3171     almtx_unlock(&device->BackendLock);
3172
3173     ALCdevice_DecRef(device);
3174
3175     TRACE("Created context %p\n", ALContext);
3176     return ALContext;
3177 }
3178
3179 /* alcDestroyContext
3180  *
3181  * Remove a context from its device
3182  */
3183 ALC_API ALCvoid ALC_APIENTRY alcDestroyContext(ALCcontext *context)
3184 {
3185     ALCdevice *Device;
3186
3187     LockLists();
3188     /* alcGetContextsDevice sets an error for invalid contexts */
3189     Device = alcGetContextsDevice(context);
3190     if(Device)
3191     {
3192         almtx_lock(&Device->BackendLock);
3193         ReleaseContext(context, Device);
3194         if(!ATOMIC_LOAD(&Device->ContextList))
3195         {
3196             V0(Device->Backend,stop)();
3197             Device->Flags &= ~DEVICE_RUNNING;
3198         }
3199         almtx_unlock(&Device->BackendLock);
3200     }
3201     UnlockLists();
3202 }
3203
3204
3205 /* alcGetCurrentContext
3206  *
3207  * Returns the currently active context on the calling thread
3208  */
3209 ALC_API ALCcontext* ALC_APIENTRY alcGetCurrentContext(void)
3210 {
3211     ALCcontext *Context = altss_get(LocalContext);
3212     if(!Context) Context = ATOMIC_LOAD(&GlobalContext);
3213     return Context;
3214 }
3215
3216 /* alcGetThreadContext
3217  *
3218  * Returns the currently active thread-local context
3219  */
3220 ALC_API ALCcontext* ALC_APIENTRY alcGetThreadContext(void)
3221 {
3222     return altss_get(LocalContext);
3223 }
3224
3225
3226 /* alcMakeContextCurrent
3227  *
3228  * Makes the given context the active process-wide context, and removes the
3229  * thread-local context for the calling thread.
3230  */
3231 ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context)
3232 {
3233     /* context must be valid or NULL */
3234     if(context && !VerifyContext(&context))
3235     {
3236         alcSetError(NULL, ALC_INVALID_CONTEXT);
3237         return ALC_FALSE;
3238     }
3239     /* context's reference count is already incremented */
3240     context = ATOMIC_EXCHANGE(ALCcontext*, &GlobalContext, context);
3241     if(context) ALCcontext_DecRef(context);
3242
3243     if((context=altss_get(LocalContext)) != NULL)
3244     {
3245         altss_set(LocalContext, NULL);
3246         ALCcontext_DecRef(context);
3247     }
3248
3249     return ALC_TRUE;
3250 }
3251
3252 /* alcSetThreadContext
3253  *
3254  * Makes the given context the active context for the current thread
3255  */
3256 ALC_API ALCboolean ALC_APIENTRY alcSetThreadContext(ALCcontext *context)
3257 {
3258     ALCcontext *old;
3259
3260     /* context must be valid or NULL */
3261     if(context && !VerifyContext(&context))
3262     {
3263         alcSetError(NULL, ALC_INVALID_CONTEXT);
3264         return ALC_FALSE;
3265     }
3266     /* context's reference count is already incremented */
3267     old = altss_get(LocalContext);
3268     altss_set(LocalContext, context);
3269     if(old) ALCcontext_DecRef(old);
3270
3271     return ALC_TRUE;
3272 }
3273
3274
3275 /* alcGetContextsDevice
3276  *
3277  * Returns the device that a particular context is attached to
3278  */
3279 ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice(ALCcontext *Context)
3280 {
3281     ALCdevice *Device;
3282
3283     if(!VerifyContext(&Context))
3284     {
3285         alcSetError(NULL, ALC_INVALID_CONTEXT);
3286         return NULL;
3287     }
3288     Device = Context->Device;
3289     ALCcontext_DecRef(Context);
3290
3291     return Device;
3292 }
3293
3294
3295 /* alcOpenDevice
3296  *
3297  * Opens the named device.
3298  */
3299 ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
3300 {
3301     const ALCchar *fmt;
3302     ALCdevice *device;
3303     ALCenum err;
3304
3305     DO_INITCONFIG();
3306
3307     if(!PlaybackBackend.name)
3308     {
3309         alcSetError(NULL, ALC_INVALID_VALUE);
3310         return NULL;
3311     }
3312
3313     if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0
3314 #ifdef _WIN32
3315         /* Some old Windows apps hardcode these expecting OpenAL to use a
3316          * specific audio API, even when they're not enumerated. Creative's
3317          * router effectively ignores them too.
3318          */
3319         || strcasecmp(deviceName, "DirectSound3D") == 0 || strcasecmp(deviceName, "DirectSound") == 0
3320         || strcasecmp(deviceName, "MMSYSTEM") == 0
3321 #endif
3322     ))
3323         deviceName = NULL;
3324
3325     device = al_calloc(16, sizeof(ALCdevice)+sizeof(ALeffectslot));
3326     if(!device)
3327     {
3328         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3329         return NULL;
3330     }
3331
3332     //Validate device
3333     InitRef(&device->ref, 1);
3334     device->Connected = ALC_TRUE;
3335     device->Type = Playback;
3336     ATOMIC_INIT(&device->LastError, ALC_NO_ERROR);
3337
3338     device->Flags = 0;
3339     device->Bs2b = NULL;
3340     device->Uhj_Encoder = NULL;
3341     VECTOR_INIT(device->Hrtf_List);
3342     AL_STRING_INIT(device->Hrtf_Name);
3343     device->Render_Mode = NormalRender;
3344     AL_STRING_INIT(device->DeviceName);
3345     device->Dry.Buffer = NULL;
3346     device->Dry.NumChannels = 0;
3347     device->VirtOut.Buffer = NULL;
3348     device->VirtOut.NumChannels = 0;
3349     device->RealOut.Buffer = NULL;
3350     device->RealOut.NumChannels = 0;
3351
3352     ATOMIC_INIT(&device->ContextList, NULL);
3353
3354     device->ClockBase = 0;
3355     device->SamplesDone = 0;
3356
3357     device->MaxNoOfSources = 256;
3358     device->AuxiliaryEffectSlotMax = 4;
3359     device->NumAuxSends = MAX_SENDS;
3360
3361     InitUIntMap(&device->BufferMap, ~0);
3362     InitUIntMap(&device->EffectMap, ~0);
3363     InitUIntMap(&device->FilterMap, ~0);
3364
3365     //Set output format
3366     device->FmtChans = DevFmtChannelsDefault;
3367     device->FmtType = DevFmtTypeDefault;
3368     device->Frequency = DEFAULT_OUTPUT_RATE;
3369     device->IsHeadphones = AL_FALSE;
3370     device->NumUpdates = 4;
3371     device->UpdateSize = 1024;
3372
3373     if(!PlaybackBackend.getFactory)
3374         device->Backend = create_backend_wrapper(device, &PlaybackBackend.Funcs,
3375                                                  ALCbackend_Playback);
3376     else
3377     {
3378         ALCbackendFactory *factory = PlaybackBackend.getFactory();
3379         device->Backend = V(factory,createBackend)(device, ALCbackend_Playback);
3380     }
3381     if(!device->Backend)
3382     {
3383         al_free(device);
3384         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3385         return NULL;
3386     }
3387
3388
3389     if(ConfigValueStr(deviceName, NULL, "channels", &fmt))
3390     {
3391         static const struct {
3392             const char name[16];
3393             enum DevFmtChannels chans;
3394         } chanlist[] = {
3395             { "mono",       DevFmtMono   },
3396             { "stereo",     DevFmtStereo },
3397             { "quad",       DevFmtQuad   },
3398             { "surround51", DevFmtX51    },
3399             { "surround61", DevFmtX61    },
3400             { "surround71", DevFmtX71    },
3401             { "surround51rear", DevFmtX51Rear },
3402         };
3403         size_t i;
3404
3405         for(i = 0;i < COUNTOF(chanlist);i++)
3406         {
3407             if(strcasecmp(chanlist[i].name, fmt) == 0)
3408             {
3409                 device->FmtChans = chanlist[i].chans;
3410                 device->Flags |= DEVICE_CHANNELS_REQUEST;
3411                 break;
3412             }
3413         }
3414         if(i == COUNTOF(chanlist))
3415             ERR("Unsupported channels: %s\n", fmt);
3416     }
3417     if(ConfigValueStr(deviceName, NULL, "sample-type", &fmt))
3418     {
3419         static const struct {
3420             const char name[16];
3421             enum DevFmtType type;
3422         } typelist[] = {
3423             { "int8",    DevFmtByte   },
3424             { "uint8",   DevFmtUByte  },
3425             { "int16",   DevFmtShort  },
3426             { "uint16",  DevFmtUShort },
3427             { "int32",   DevFmtInt    },
3428             { "uint32",  DevFmtUInt   },
3429             { "float32", DevFmtFloat  },
3430         };
3431         size_t i;
3432
3433         for(i = 0;i < COUNTOF(typelist);i++)
3434         {
3435             if(strcasecmp(typelist[i].name, fmt) == 0)
3436             {
3437                 device->FmtType = typelist[i].type;
3438                 device->Flags |= DEVICE_SAMPLE_TYPE_REQUEST;
3439                 break;
3440             }
3441         }
3442         if(i == COUNTOF(typelist))
3443             ERR("Unsupported sample-type: %s\n", fmt);
3444     }
3445
3446     if(ConfigValueUInt(deviceName, NULL, "frequency", &device->Frequency))
3447     {
3448         device->Flags |= DEVICE_FREQUENCY_REQUEST;
3449         if(device->Frequency < MIN_OUTPUT_RATE)
3450             ERR("%uhz request clamped to %uhz minimum\n", device->Frequency, MIN_OUTPUT_RATE);
3451         device->Frequency = maxu(device->Frequency, MIN_OUTPUT_RATE);
3452     }
3453
3454     ConfigValueUInt(deviceName, NULL, "periods", &device->NumUpdates);
3455     device->NumUpdates = clampu(device->NumUpdates, 2, 16);
3456
3457     ConfigValueUInt(deviceName, NULL, "period_size", &device->UpdateSize);
3458     device->UpdateSize = clampu(device->UpdateSize, 64, 8192);
3459     if((CPUCapFlags&(CPU_CAP_SSE|CPU_CAP_NEON)) != 0)
3460         device->UpdateSize = (device->UpdateSize+3)&~3;
3461
3462     ConfigValueUInt(deviceName, NULL, "sources", &device->MaxNoOfSources);
3463     if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256;
3464
3465     ConfigValueUInt(deviceName, NULL, "slots", &device->AuxiliaryEffectSlotMax);
3466     if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4;
3467
3468     ConfigValueUInt(deviceName, NULL, "sends", &device->NumAuxSends);
3469     if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS;
3470
3471     device->NumStereoSources = 1;
3472     device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
3473
3474     // Find a playback device to open
3475     if((err=V(device->Backend,open)(deviceName)) != ALC_NO_ERROR)
3476     {
3477         DELETE_OBJ(device->Backend);
3478         al_free(device);
3479         alcSetError(NULL, err);
3480         return NULL;
3481     }
3482     almtx_init(&device->BackendLock, almtx_plain);
3483
3484     if(DefaultEffect.type != AL_EFFECT_NULL)
3485     {
3486         device->DefaultSlot = (ALeffectslot*)device->_slot_mem;
3487         if(InitEffectSlot(device->DefaultSlot) != AL_NO_ERROR)
3488         {
3489             device->DefaultSlot = NULL;
3490             ERR("Failed to initialize the default effect slot\n");
3491         }
3492         else
3493         {
3494             aluInitEffectPanning(device->DefaultSlot);
3495             if(InitializeEffect(device, device->DefaultSlot, &DefaultEffect) != AL_NO_ERROR)
3496             {
3497                 DeinitEffectSlot(device->DefaultSlot);
3498                 device->DefaultSlot = NULL;
3499                 ERR("Failed to initialize the default effect\n");
3500             }
3501         }
3502     }
3503
3504     {
3505         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3506         do {
3507             device->next = head;
3508         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3509     }
3510
3511     TRACE("Created device %p, \"%s\"\n", device, al_string_get_cstr(device->DeviceName));
3512     return device;
3513 }
3514
3515 /* alcCloseDevice
3516  *
3517  * Closes the given device.
3518  */
3519 ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *device)
3520 {
3521     ALCdevice *list, *origdev, *nextdev;
3522     ALCcontext *ctx;
3523
3524     LockLists();
3525     list = ATOMIC_LOAD(&DeviceList);
3526     do {
3527         if(list == device)
3528             break;
3529     } while((list=list->next) != NULL);
3530     if(!list || list->Type == Capture)
3531     {
3532         alcSetError(list, ALC_INVALID_DEVICE);
3533         UnlockLists();
3534         return ALC_FALSE;
3535     }
3536     almtx_lock(&device->BackendLock);
3537
3538     origdev = device;
3539     nextdev = device->next;
3540     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCdevice*, &DeviceList, &origdev, nextdev))
3541     {
3542         do {
3543             list = origdev;
3544             origdev = device;
3545         } while(!COMPARE_EXCHANGE(&list->next, &origdev, nextdev));
3546     }
3547     UnlockLists();
3548
3549     ctx = ATOMIC_LOAD(&device->ContextList);
3550     while(ctx != NULL)
3551     {
3552         ALCcontext *next = ctx->next;
3553         WARN("Releasing context %p\n", ctx);
3554         ReleaseContext(ctx, device);
3555         ctx = next;
3556     }
3557     if((device->Flags&DEVICE_RUNNING))
3558         V0(device->Backend,stop)();
3559     device->Flags &= ~DEVICE_RUNNING;
3560     almtx_unlock(&device->BackendLock);
3561
3562     ALCdevice_DecRef(device);
3563
3564     return ALC_TRUE;
3565 }
3566
3567
3568 /************************************************
3569  * ALC capture functions
3570  ************************************************/
3571 ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei samples)
3572 {
3573     ALCdevice *device = NULL;
3574     ALCenum err;
3575
3576     DO_INITCONFIG();
3577
3578     if(!CaptureBackend.name)
3579     {
3580         alcSetError(NULL, ALC_INVALID_VALUE);
3581         return NULL;
3582     }
3583
3584     if(samples <= 0)
3585     {
3586         alcSetError(NULL, ALC_INVALID_VALUE);
3587         return NULL;
3588     }
3589
3590     if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0))
3591         deviceName = NULL;
3592
3593     device = al_calloc(16, sizeof(ALCdevice));
3594     if(!device)
3595     {
3596         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3597         return NULL;
3598     }
3599
3600     //Validate device
3601     InitRef(&device->ref, 1);
3602     device->Connected = ALC_TRUE;
3603     device->Type = Capture;
3604
3605     VECTOR_INIT(device->Hrtf_List);
3606     AL_STRING_INIT(device->Hrtf_Name);
3607
3608     AL_STRING_INIT(device->DeviceName);
3609     device->Dry.Buffer = NULL;
3610     device->Dry.NumChannels = 0;
3611     device->VirtOut.Buffer = NULL;
3612     device->VirtOut.NumChannels = 0;
3613     device->RealOut.Buffer = NULL;
3614     device->RealOut.NumChannels = 0;
3615
3616     InitUIntMap(&device->BufferMap, ~0);
3617     InitUIntMap(&device->EffectMap, ~0);
3618     InitUIntMap(&device->FilterMap, ~0);
3619
3620     if(!CaptureBackend.getFactory)
3621         device->Backend = create_backend_wrapper(device, &CaptureBackend.Funcs,
3622                                                  ALCbackend_Capture);
3623     else
3624     {
3625         ALCbackendFactory *factory = CaptureBackend.getFactory();
3626         device->Backend = V(factory,createBackend)(device, ALCbackend_Capture);
3627     }
3628     if(!device->Backend)
3629     {
3630         al_free(device);
3631         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3632         return NULL;
3633     }
3634
3635     device->Flags |= DEVICE_FREQUENCY_REQUEST;
3636     device->Frequency = frequency;
3637
3638     device->Flags |= DEVICE_CHANNELS_REQUEST | DEVICE_SAMPLE_TYPE_REQUEST;
3639     if(DecomposeDevFormat(format, &device->FmtChans, &device->FmtType) == AL_FALSE)
3640     {
3641         al_free(device);
3642         alcSetError(NULL, ALC_INVALID_ENUM);
3643         return NULL;
3644     }
3645     device->IsHeadphones = AL_FALSE;
3646
3647     device->UpdateSize = samples;
3648     device->NumUpdates = 1;
3649
3650     if((err=V(device->Backend,open)(deviceName)) != ALC_NO_ERROR)
3651     {
3652         al_free(device);
3653         alcSetError(NULL, err);
3654         return NULL;
3655     }
3656     almtx_init(&device->BackendLock, almtx_plain);
3657
3658     {
3659         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3660         do {
3661             device->next = head;
3662         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3663     }
3664
3665     TRACE("Created device %p, \"%s\"\n", device, al_string_get_cstr(device->DeviceName));
3666     return device;
3667 }
3668
3669 ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice(ALCdevice *device)
3670 {
3671     ALCdevice *list, *next, *nextdev;
3672
3673     LockLists();
3674     list = ATOMIC_LOAD(&DeviceList);
3675     do {
3676         if(list == device)
3677             break;
3678     } while((list=list->next) != NULL);
3679     if(!list || list->Type != Capture)
3680     {
3681         alcSetError(list, ALC_INVALID_DEVICE);
3682         UnlockLists();
3683         return ALC_FALSE;
3684     }
3685
3686     next = device;
3687     nextdev = device->next;
3688     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCdevice*, &DeviceList, &next, nextdev))
3689     {
3690         do {
3691             list = next;
3692             next = device;
3693         } while(!COMPARE_EXCHANGE(&list->next, &next, nextdev));
3694     }
3695     UnlockLists();
3696
3697     ALCdevice_DecRef(device);
3698
3699     return ALC_TRUE;
3700 }
3701
3702 ALC_API void ALC_APIENTRY alcCaptureStart(ALCdevice *device)
3703 {
3704     if(!VerifyDevice(&device) || device->Type != Capture)
3705         alcSetError(device, ALC_INVALID_DEVICE);
3706     else
3707     {
3708         almtx_lock(&device->BackendLock);
3709         if(!device->Connected)
3710             alcSetError(device, ALC_INVALID_DEVICE);
3711         else if(!(device->Flags&DEVICE_RUNNING))
3712         {
3713             if(V0(device->Backend,start)())
3714                 device->Flags |= DEVICE_RUNNING;
3715             else
3716             {
3717                 aluHandleDisconnect(device);
3718                 alcSetError(device, ALC_INVALID_DEVICE);
3719             }
3720         }
3721         almtx_unlock(&device->BackendLock);
3722     }
3723
3724     if(device) ALCdevice_DecRef(device);
3725 }
3726
3727 ALC_API void ALC_APIENTRY alcCaptureStop(ALCdevice *device)
3728 {
3729     if(!VerifyDevice(&device) || device->Type != Capture)
3730         alcSetError(device, ALC_INVALID_DEVICE);
3731     else
3732     {
3733         almtx_lock(&device->BackendLock);
3734         if((device->Flags&DEVICE_RUNNING))
3735             V0(device->Backend,stop)();
3736         device->Flags &= ~DEVICE_RUNNING;
3737         almtx_unlock(&device->BackendLock);
3738     }
3739
3740     if(device) ALCdevice_DecRef(device);
3741 }
3742
3743 ALC_API void ALC_APIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
3744 {
3745     if(!VerifyDevice(&device) || device->Type != Capture)
3746         alcSetError(device, ALC_INVALID_DEVICE);
3747     else
3748     {
3749         ALCenum err = ALC_INVALID_VALUE;
3750
3751         almtx_lock(&device->BackendLock);
3752         if(samples >= 0 && V0(device->Backend,availableSamples)() >= (ALCuint)samples)
3753             err = V(device->Backend,captureSamples)(buffer, samples);
3754         almtx_unlock(&device->BackendLock);
3755
3756         if(err != ALC_NO_ERROR)
3757             alcSetError(device, err);
3758     }
3759     if(device) ALCdevice_DecRef(device);
3760 }
3761
3762
3763 /************************************************
3764  * ALC loopback functions
3765  ************************************************/
3766
3767 /* alcLoopbackOpenDeviceSOFT
3768  *
3769  * Open a loopback device, for manual rendering.
3770  */
3771 ALC_API ALCdevice* ALC_APIENTRY alcLoopbackOpenDeviceSOFT(const ALCchar *deviceName)
3772 {
3773     ALCbackendFactory *factory;
3774     ALCdevice *device;
3775
3776     DO_INITCONFIG();
3777
3778     /* Make sure the device name, if specified, is us. */
3779     if(deviceName && strcmp(deviceName, alcDefaultName) != 0)
3780     {
3781         alcSetError(NULL, ALC_INVALID_VALUE);
3782         return NULL;
3783     }
3784
3785     device = al_calloc(16, sizeof(ALCdevice));
3786     if(!device)
3787     {
3788         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3789         return NULL;
3790     }
3791
3792     //Validate device
3793     InitRef(&device->ref, 1);
3794     device->Connected = ALC_TRUE;
3795     device->Type = Loopback;
3796     ATOMIC_INIT(&device->LastError, ALC_NO_ERROR);
3797
3798     device->Flags = 0;
3799     VECTOR_INIT(device->Hrtf_List);
3800     AL_STRING_INIT(device->Hrtf_Name);
3801     device->Bs2b = NULL;
3802     device->Uhj_Encoder = NULL;
3803     device->Render_Mode = NormalRender;
3804     AL_STRING_INIT(device->DeviceName);
3805     device->Dry.Buffer = NULL;
3806     device->Dry.NumChannels = 0;
3807     device->VirtOut.Buffer = NULL;
3808     device->VirtOut.NumChannels = 0;
3809     device->RealOut.Buffer = NULL;
3810     device->RealOut.NumChannels = 0;
3811
3812     ATOMIC_INIT(&device->ContextList, NULL);
3813
3814     device->ClockBase = 0;
3815     device->SamplesDone = 0;
3816
3817     device->MaxNoOfSources = 256;
3818     device->AuxiliaryEffectSlotMax = 4;
3819     device->NumAuxSends = MAX_SENDS;
3820
3821     InitUIntMap(&device->BufferMap, ~0);
3822     InitUIntMap(&device->EffectMap, ~0);
3823     InitUIntMap(&device->FilterMap, ~0);
3824
3825     factory = ALCloopbackFactory_getFactory();
3826     device->Backend = V(factory,createBackend)(device, ALCbackend_Loopback);
3827     if(!device->Backend)
3828     {
3829         al_free(device);
3830         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3831         return NULL;
3832     }
3833     almtx_init(&device->BackendLock, almtx_plain);
3834
3835     //Set output format
3836     device->NumUpdates = 0;
3837     device->UpdateSize = 0;
3838
3839     device->Frequency = DEFAULT_OUTPUT_RATE;
3840     device->FmtChans = DevFmtChannelsDefault;
3841     device->FmtType = DevFmtTypeDefault;
3842     device->IsHeadphones = AL_FALSE;
3843
3844     ConfigValueUInt(NULL, NULL, "sources", &device->MaxNoOfSources);
3845     if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256;
3846
3847     ConfigValueUInt(NULL, NULL, "slots", &device->AuxiliaryEffectSlotMax);
3848     if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4;
3849
3850     ConfigValueUInt(NULL, NULL, "sends", &device->NumAuxSends);
3851     if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS;
3852
3853     device->NumStereoSources = 1;
3854     device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
3855
3856     // Open the "backend"
3857     V(device->Backend,open)("Loopback");
3858
3859     {
3860         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3861         do {
3862             device->next = head;
3863         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3864     }
3865
3866     TRACE("Created device %p\n", device);
3867     return device;
3868 }
3869
3870 /* alcIsRenderFormatSupportedSOFT
3871  *
3872  * Determines if the loopback device supports the given format for rendering.
3873  */
3874 ALC_API ALCboolean ALC_APIENTRY alcIsRenderFormatSupportedSOFT(ALCdevice *device, ALCsizei freq, ALCenum channels, ALCenum type)
3875 {
3876     ALCboolean ret = ALC_FALSE;
3877
3878     if(!VerifyDevice(&device) || device->Type != Loopback)
3879         alcSetError(device, ALC_INVALID_DEVICE);
3880     else if(freq <= 0)
3881         alcSetError(device, ALC_INVALID_VALUE);
3882     else
3883     {
3884         if(IsValidALCType(type) && BytesFromDevFmt(type) > 0 &&
3885            IsValidALCChannels(channels) && ChannelsFromDevFmt(channels) > 0 &&
3886            freq >= MIN_OUTPUT_RATE)
3887             ret = ALC_TRUE;
3888     }
3889     if(device) ALCdevice_DecRef(device);
3890
3891     return ret;
3892 }
3893
3894 /* alcRenderSamplesSOFT
3895  *
3896  * Renders some samples into a buffer, using the format last set by the
3897  * attributes given to alcCreateContext.
3898  */
3899 FORCE_ALIGN ALC_API void ALC_APIENTRY alcRenderSamplesSOFT(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
3900 {
3901     if(!VerifyDevice(&device) || device->Type != Loopback)
3902         alcSetError(device, ALC_INVALID_DEVICE);
3903     else if(samples < 0 || (samples > 0 && buffer == NULL))
3904         alcSetError(device, ALC_INVALID_VALUE);
3905     else
3906         aluMixData(device, buffer, samples);
3907     if(device) ALCdevice_DecRef(device);
3908 }
3909
3910
3911 /************************************************
3912  * ALC DSP pause/resume functions
3913  ************************************************/
3914
3915 /* alcDevicePauseSOFT
3916  *
3917  * Pause the DSP to stop audio processing.
3918  */
3919 ALC_API void ALC_APIENTRY alcDevicePauseSOFT(ALCdevice *device)
3920 {
3921     if(!VerifyDevice(&device) || device->Type != Playback)
3922         alcSetError(device, ALC_INVALID_DEVICE);
3923     else
3924     {
3925         almtx_lock(&device->BackendLock);
3926         if((device->Flags&DEVICE_RUNNING))
3927             V0(device->Backend,stop)();
3928         device->Flags &= ~DEVICE_RUNNING;
3929         device->Flags |= DEVICE_PAUSED;
3930         almtx_unlock(&device->BackendLock);
3931     }
3932     if(device) ALCdevice_DecRef(device);
3933 }
3934
3935 /* alcDeviceResumeSOFT
3936  *
3937  * Resume the DSP to restart audio processing.
3938  */
3939 ALC_API void ALC_APIENTRY alcDeviceResumeSOFT(ALCdevice *device)
3940 {
3941     if(!VerifyDevice(&device) || device->Type != Playback)
3942         alcSetError(device, ALC_INVALID_DEVICE);
3943     else
3944     {
3945         almtx_lock(&device->BackendLock);
3946         if((device->Flags&DEVICE_PAUSED))
3947         {
3948             device->Flags &= ~DEVICE_PAUSED;
3949             if(ATOMIC_LOAD(&device->ContextList) != NULL)
3950             {
3951                 if(V0(device->Backend,start)() != ALC_FALSE)
3952                     device->Flags |= DEVICE_RUNNING;
3953                 else
3954                 {
3955                     alcSetError(device, ALC_INVALID_DEVICE);
3956                     V0(device->Backend,lock)();
3957                     aluHandleDisconnect(device);
3958                     V0(device->Backend,unlock)();
3959                 }
3960             }
3961         }
3962         almtx_unlock(&device->BackendLock);
3963     }
3964     if(device) ALCdevice_DecRef(device);
3965 }
3966
3967
3968 /************************************************
3969  * ALC HRTF functions
3970  ************************************************/
3971
3972 /* alcGetStringiSOFT
3973  *
3974  * Gets a string parameter at the given index.
3975  */
3976 ALC_API const ALCchar* ALC_APIENTRY alcGetStringiSOFT(ALCdevice *device, ALCenum paramName, ALCsizei index)
3977 {
3978     const ALCchar *str = NULL;
3979
3980     if(!VerifyDevice(&device) || device->Type == Capture)
3981         alcSetError(device, ALC_INVALID_DEVICE);
3982     else switch(paramName)
3983     {
3984         case ALC_HRTF_SPECIFIER_SOFT:
3985             if(index >= 0 && (size_t)index < VECTOR_SIZE(device->Hrtf_List))
3986                 str = al_string_get_cstr(VECTOR_ELEM(device->Hrtf_List, index).name);
3987             else
3988                 alcSetError(device, ALC_INVALID_VALUE);
3989             break;
3990
3991         default:
3992             alcSetError(device, ALC_INVALID_ENUM);
3993             break;
3994     }
3995     if(device) ALCdevice_DecRef(device);
3996
3997     return str;
3998 }
3999
4000 /* alcResetDeviceSOFT
4001  *
4002  * Resets the given device output, using the specified attribute list.
4003  */
4004 ALC_API ALCboolean ALC_APIENTRY alcResetDeviceSOFT(ALCdevice *device, const ALCint *attribs)
4005 {
4006     ALCenum err;
4007
4008     LockLists();
4009     if(!VerifyDevice(&device) || device->Type == Capture || !device->Connected)
4010     {
4011         UnlockLists();
4012         alcSetError(device, ALC_INVALID_DEVICE);
4013         if(device) ALCdevice_DecRef(device);
4014         return ALC_FALSE;
4015     }
4016     almtx_lock(&device->BackendLock);
4017     UnlockLists();
4018
4019     err = UpdateDeviceParams(device, attribs);
4020     almtx_unlock(&device->BackendLock);
4021
4022     if(err != ALC_NO_ERROR)
4023     {
4024         alcSetError(device, err);
4025         if(err == ALC_INVALID_DEVICE)
4026         {
4027             V0(device->Backend,lock)();
4028             aluHandleDisconnect(device);
4029             V0(device->Backend,unlock)();
4030         }
4031         ALCdevice_DecRef(device);
4032         return ALC_FALSE;
4033     }
4034     ALCdevice_DecRef(device);
4035
4036     return ALC_TRUE;
4037 }