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 lockret = almtx_lock(&ListLock);
 786     assert(lockret == althrd_success);
 787 }
 788 static inline void UnlockLists(void)
 789 {
 790     int unlockret = almtx_unlock(&ListLock);
 791     assert(unlockret == 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->Params.EffectState;
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->Params.EffectState;
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     if(device->DefaultSlot)
2135     {
2136         DeinitEffectSlot(device->DefaultSlot);
2137         device->DefaultSlot = NULL;
2138     }
2139
2140     if(device->BufferMap.size > 0)
2141     {
2142         WARN("(%p) Deleting %d Buffer(s)\n", device, device->BufferMap.size);
2143         ReleaseALBuffers(device);
2144     }
2145     ResetUIntMap(&device->BufferMap);
2146
2147     if(device->EffectMap.size > 0)
2148     {
2149         WARN("(%p) Deleting %d Effect(s)\n", device, device->EffectMap.size);
2150         ReleaseALEffects(device);
2151     }
2152     ResetUIntMap(&device->EffectMap);
2153
2154     if(device->FilterMap.size > 0)
2155     {
2156         WARN("(%p) Deleting %d Filter(s)\n", device, device->FilterMap.size);
2157         ReleaseALFilters(device);
2158     }
2159     ResetUIntMap(&device->FilterMap);
2160
2161     AL_STRING_DEINIT(device->Hrtf_Name);
2162     FreeHrtfList(&device->Hrtf_List);
2163
2164     al_free(device->Bs2b);
2165     device->Bs2b = NULL;
2166
2167     al_free(device->Uhj_Encoder);
2168     device->Uhj_Encoder = NULL;
2169
2170     bformatdec_free(device->AmbiDecoder);
2171     device->AmbiDecoder = NULL;
2172
2173     AL_STRING_DEINIT(device->DeviceName);
2174
2175     al_free(device->Dry.Buffer);
2176     device->Dry.Buffer = NULL;
2177     device->Dry.NumChannels = 0;
2178     device->VirtOut.Buffer = NULL;
2179     device->VirtOut.NumChannels = 0;
2180     device->RealOut.Buffer = NULL;
2181     device->RealOut.NumChannels = 0;
2182
2183     al_free(device);
2184 }
2185
2186
2187 void ALCdevice_IncRef(ALCdevice *device)
2188 {
2189     uint ref;
2190     ref = IncrementRef(&device->ref);
2191     TRACEREF("%p increasing refcount to %u\n", device, ref);
2192 }
2193
2194 void ALCdevice_DecRef(ALCdevice *device)
2195 {
2196     uint ref;
2197     ref = DecrementRef(&device->ref);
2198     TRACEREF("%p decreasing refcount to %u\n", device, ref);
2199     if(ref == 0) FreeDevice(device);
2200 }
2201
2202 /* VerifyDevice
2203  *
2204  * Checks if the device handle is valid, and increments its ref count if so.
2205  */
2206 static ALCboolean VerifyDevice(ALCdevice **device)
2207 {
2208     ALCdevice *tmpDevice;
2209
2210     LockLists();
2211     tmpDevice = ATOMIC_LOAD(&DeviceList);
2212     while(tmpDevice)
2213     {
2214         if(tmpDevice == *device)
2215         {
2216             ALCdevice_IncRef(tmpDevice);
2217             UnlockLists();
2218             return ALC_TRUE;
2219         }
2220         tmpDevice = tmpDevice->next;
2221     }
2222     UnlockLists();
2223
2224     *device = NULL;
2225     return ALC_FALSE;
2226 }
2227
2228
2229 /* InitContext
2230  *
2231  * Initializes context fields
2232  */
2233 static ALvoid InitContext(ALCcontext *Context)
2234 {
2235     ALlistener *listener = Context->Listener;
2236
2237     //Initialise listener
2238     listener->Gain = 1.0f;
2239     listener->MetersPerUnit = 1.0f;
2240     listener->Position[0] = 0.0f;
2241     listener->Position[1] = 0.0f;
2242     listener->Position[2] = 0.0f;
2243     listener->Velocity[0] = 0.0f;
2244     listener->Velocity[1] = 0.0f;
2245     listener->Velocity[2] = 0.0f;
2246     listener->Forward[0] = 0.0f;
2247     listener->Forward[1] = 0.0f;
2248     listener->Forward[2] = -1.0f;
2249     listener->Up[0] = 0.0f;
2250     listener->Up[1] = 1.0f;
2251     listener->Up[2] = 0.0f;
2252
2253     aluMatrixdSet(&listener->Params.Matrix,
2254         1.0, 0.0, 0.0, 0.0,
2255         0.0, 1.0, 0.0, 0.0,
2256         0.0, 0.0, 1.0, 0.0,
2257         0.0, 0.0, 0.0, 1.0
2258     );
2259     aluVectorSet(&listener->Params.Velocity, 0.0f, 0.0f, 0.0f, 0.0f);
2260     listener->Params.Gain = 1.0f;
2261     listener->Params.MetersPerUnit = 1.0f;
2262     listener->Params.DopplerFactor = 1.0f;
2263     listener->Params.SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
2264
2265     ATOMIC_INIT(&listener->Update, NULL);
2266     ATOMIC_INIT(&listener->FreeList, NULL);
2267
2268     //Validate Context
2269     RWLockInit(&Context->PropLock);
2270     ATOMIC_INIT(&Context->LastError, AL_NO_ERROR);
2271     InitUIntMap(&Context->SourceMap, Context->Device->MaxNoOfSources);
2272     InitUIntMap(&Context->EffectSlotMap, Context->Device->AuxiliaryEffectSlotMax);
2273
2274     //Set globals
2275     Context->DistanceModel = DefaultDistanceModel;
2276     Context->SourceDistanceModel = AL_FALSE;
2277     Context->DopplerFactor = 1.0f;
2278     Context->DopplerVelocity = 1.0f;
2279     Context->SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
2280     ATOMIC_INIT(&Context->DeferUpdates, AL_FALSE);
2281
2282     Context->ExtensionList = alExtList;
2283 }
2284
2285
2286 /* FreeContext
2287  *
2288  * Cleans up the context, and destroys any remaining objects the app failed to
2289  * delete. Called once there's no more references on the context.
2290  */
2291 static void FreeContext(ALCcontext *context)
2292 {
2293     ALlistener *listener = context->Listener;
2294     struct ALlistenerProps *lprops;
2295     size_t count;
2296
2297     TRACE("%p\n", context);
2298
2299     if(context->SourceMap.size > 0)
2300     {
2301         WARN("(%p) Deleting %d Source(s)\n", context, context->SourceMap.size);
2302         ReleaseALSources(context);
2303     }
2304     ResetUIntMap(&context->SourceMap);
2305
2306     if(context->EffectSlotMap.size > 0)
2307     {
2308         WARN("(%p) Deleting %d AuxiliaryEffectSlot(s)\n", context, context->EffectSlotMap.size);
2309         ReleaseALAuxiliaryEffectSlots(context);
2310     }
2311     ResetUIntMap(&context->EffectSlotMap);
2312
2313     al_free(context->Voices);
2314     context->Voices = NULL;
2315     context->VoiceCount = 0;
2316     context->MaxVoices = 0;
2317
2318     VECTOR_DEINIT(context->ActiveAuxSlots);
2319
2320     if((lprops=ATOMIC_LOAD(&listener->Update, almemory_order_acquire)) != NULL)
2321     {
2322         TRACE("Freed unapplied listener update %p\n", lprops);
2323         al_free(lprops);
2324     }
2325     count = 0;
2326     lprops = ATOMIC_LOAD(&listener->FreeList, almemory_order_consume);
2327     while(lprops)
2328     {
2329         struct ALlistenerProps *next = ATOMIC_LOAD(&lprops->next, almemory_order_consume);
2330         al_free(lprops);
2331         lprops = next;
2332         ++count;
2333     }
2334     TRACE("Freed "SZFMT" listener property object%s\n", count, (count==1)?"":"s");
2335
2336     ALCdevice_DecRef(context->Device);
2337     context->Device = NULL;
2338
2339     //Invalidate context
2340     memset(context, 0, sizeof(ALCcontext));
2341     al_free(context);
2342 }
2343
2344 /* ReleaseContext
2345  *
2346  * Removes the context reference from the given device and removes it from
2347  * being current on the running thread or globally.
2348  */
2349 static void ReleaseContext(ALCcontext *context, ALCdevice *device)
2350 {
2351     ALCcontext *nextctx;
2352     ALCcontext *origctx;
2353
2354     if(altss_get(LocalContext) == context)
2355     {
2356         WARN("%p released while current on thread\n", context);
2357         altss_set(LocalContext, NULL);
2358         ALCcontext_DecRef(context);
2359     }
2360
2361     origctx = context;
2362     if(ATOMIC_COMPARE_EXCHANGE_STRONG(ALCcontext*, &GlobalContext, &origctx, NULL))
2363         ALCcontext_DecRef(context);
2364
2365     ALCdevice_Lock(device);
2366     origctx = context;
2367     nextctx = context->next;
2368     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCcontext*, &device->ContextList, &origctx, nextctx))
2369     {
2370         ALCcontext *list;
2371         do {
2372             list = origctx;
2373             origctx = context;
2374         } while(!COMPARE_EXCHANGE(&list->next, &origctx, nextctx));
2375     }
2376     ALCdevice_Unlock(device);
2377
2378     ALCcontext_DecRef(context);
2379 }
2380
2381 void ALCcontext_IncRef(ALCcontext *context)
2382 {
2383     uint ref;
2384     ref = IncrementRef(&context->ref);
2385     TRACEREF("%p increasing refcount to %u\n", context, ref);
2386 }
2387
2388 void ALCcontext_DecRef(ALCcontext *context)
2389 {
2390     uint ref;
2391     ref = DecrementRef(&context->ref);
2392     TRACEREF("%p decreasing refcount to %u\n", context, ref);
2393     if(ref == 0) FreeContext(context);
2394 }
2395
2396 static void ReleaseThreadCtx(void *ptr)
2397 {
2398     WARN("%p current for thread being destroyed\n", ptr);
2399     ALCcontext_DecRef(ptr);
2400 }
2401
2402 /* VerifyContext
2403  *
2404  * Checks that the given context is valid, and increments its reference count.
2405  */
2406 static ALCboolean VerifyContext(ALCcontext **context)
2407 {
2408     ALCdevice *dev;
2409
2410     LockLists();
2411     dev = ATOMIC_LOAD(&DeviceList);
2412     while(dev)
2413     {
2414         ALCcontext *ctx = ATOMIC_LOAD(&dev->ContextList);
2415         while(ctx)
2416         {
2417             if(ctx == *context)
2418             {
2419                 ALCcontext_IncRef(ctx);
2420                 UnlockLists();
2421                 return ALC_TRUE;
2422             }
2423             ctx = ctx->next;
2424         }
2425         dev = dev->next;
2426     }
2427     UnlockLists();
2428
2429     *context = NULL;
2430     return ALC_FALSE;
2431 }
2432
2433
2434 /* GetContextRef
2435  *
2436  * Returns the currently active context for this thread, and adds a reference
2437  * without locking it.
2438  */
2439 ALCcontext *GetContextRef(void)
2440 {
2441     ALCcontext *context;
2442
2443     context = altss_get(LocalContext);
2444     if(context)
2445         ALCcontext_IncRef(context);
2446     else
2447     {
2448         LockLists();
2449         context = ATOMIC_LOAD(&GlobalContext);
2450         if(context)
2451             ALCcontext_IncRef(context);
2452         UnlockLists();
2453     }
2454
2455     return context;
2456 }
2457
2458
2459 /************************************************
2460  * Standard ALC functions
2461  ************************************************/
2462
2463 /* alcGetError
2464  *
2465  * Return last ALC generated error code for the given device
2466 */
2467 ALC_API ALCenum ALC_APIENTRY alcGetError(ALCdevice *device)
2468 {
2469     ALCenum errorCode;
2470
2471     if(VerifyDevice(&device))
2472     {
2473         errorCode = ATOMIC_EXCHANGE(ALCenum, &device->LastError, ALC_NO_ERROR);
2474         ALCdevice_DecRef(device);
2475     }
2476     else
2477         errorCode = ATOMIC_EXCHANGE(ALCenum, &LastNullDeviceError, ALC_NO_ERROR);
2478
2479     return errorCode;
2480 }
2481
2482
2483 /* alcSuspendContext
2484  *
2485  * Suspends updates for the given context
2486  */
2487 ALC_API ALCvoid ALC_APIENTRY alcSuspendContext(ALCcontext *context)
2488 {
2489     if(!SuspendDefers)
2490         return;
2491
2492     if(!VerifyContext(&context))
2493         alcSetError(NULL, ALC_INVALID_CONTEXT);
2494     else
2495     {
2496         ALCcontext_DeferUpdates(context);
2497         ALCcontext_DecRef(context);
2498     }
2499 }
2500
2501 /* alcProcessContext
2502  *
2503  * Resumes processing updates for the given context
2504  */
2505 ALC_API ALCvoid ALC_APIENTRY alcProcessContext(ALCcontext *context)
2506 {
2507     if(!SuspendDefers)
2508         return;
2509
2510     if(!VerifyContext(&context))
2511         alcSetError(NULL, ALC_INVALID_CONTEXT);
2512     else
2513     {
2514         ALCcontext_ProcessUpdates(context);
2515         ALCcontext_DecRef(context);
2516     }
2517 }
2518
2519
2520 /* alcGetString
2521  *
2522  * Returns information about the device, and error strings
2523  */
2524 ALC_API const ALCchar* ALC_APIENTRY alcGetString(ALCdevice *Device, ALCenum param)
2525 {
2526     const ALCchar *value = NULL;
2527
2528     switch(param)
2529     {
2530     case ALC_NO_ERROR:
2531         value = alcNoError;
2532         break;
2533
2534     case ALC_INVALID_ENUM:
2535         value = alcErrInvalidEnum;
2536         break;
2537
2538     case ALC_INVALID_VALUE:
2539         value = alcErrInvalidValue;
2540         break;
2541
2542     case ALC_INVALID_DEVICE:
2543         value = alcErrInvalidDevice;
2544         break;
2545
2546     case ALC_INVALID_CONTEXT:
2547         value = alcErrInvalidContext;
2548         break;
2549
2550     case ALC_OUT_OF_MEMORY:
2551         value = alcErrOutOfMemory;
2552         break;
2553
2554     case ALC_DEVICE_SPECIFIER:
2555         value = alcDefaultName;
2556         break;
2557
2558     case ALC_ALL_DEVICES_SPECIFIER:
2559         if(VerifyDevice(&Device))
2560         {
2561             value = al_string_get_cstr(Device->DeviceName);
2562             ALCdevice_DecRef(Device);
2563         }
2564         else
2565         {
2566             ProbeAllDevicesList();
2567             value = al_string_get_cstr(alcAllDevicesList);
2568         }
2569         break;
2570
2571     case ALC_CAPTURE_DEVICE_SPECIFIER:
2572         if(VerifyDevice(&Device))
2573         {
2574             value = al_string_get_cstr(Device->DeviceName);
2575             ALCdevice_DecRef(Device);
2576         }
2577         else
2578         {
2579             ProbeCaptureDeviceList();
2580             value = al_string_get_cstr(alcCaptureDeviceList);
2581         }
2582         break;
2583
2584     /* Default devices are always first in the list */
2585     case ALC_DEFAULT_DEVICE_SPECIFIER:
2586         value = alcDefaultName;
2587         break;
2588
2589     case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
2590         if(al_string_empty(alcAllDevicesList))
2591             ProbeAllDevicesList();
2592
2593         VerifyDevice(&Device);
2594
2595         free(alcDefaultAllDevicesSpecifier);
2596         alcDefaultAllDevicesSpecifier = strdup(al_string_get_cstr(alcAllDevicesList));
2597         if(!alcDefaultAllDevicesSpecifier)
2598             alcSetError(Device, ALC_OUT_OF_MEMORY);
2599
2600         value = alcDefaultAllDevicesSpecifier;
2601         if(Device) ALCdevice_DecRef(Device);
2602         break;
2603
2604     case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
2605         if(al_string_empty(alcCaptureDeviceList))
2606             ProbeCaptureDeviceList();
2607
2608         VerifyDevice(&Device);
2609
2610         free(alcCaptureDefaultDeviceSpecifier);
2611         alcCaptureDefaultDeviceSpecifier = strdup(al_string_get_cstr(alcCaptureDeviceList));
2612         if(!alcCaptureDefaultDeviceSpecifier)
2613             alcSetError(Device, ALC_OUT_OF_MEMORY);
2614
2615         value = alcCaptureDefaultDeviceSpecifier;
2616         if(Device) ALCdevice_DecRef(Device);
2617         break;
2618
2619     case ALC_EXTENSIONS:
2620         if(!VerifyDevice(&Device))
2621             value = alcNoDeviceExtList;
2622         else
2623         {
2624             value = alcExtensionList;
2625             ALCdevice_DecRef(Device);
2626         }
2627         break;
2628
2629     case ALC_HRTF_SPECIFIER_SOFT:
2630         if(!VerifyDevice(&Device))
2631             alcSetError(NULL, ALC_INVALID_DEVICE);
2632         else
2633         {
2634             LockLists();
2635             value = (Device->Hrtf ? al_string_get_cstr(Device->Hrtf_Name) : "");
2636             UnlockLists();
2637             ALCdevice_DecRef(Device);
2638         }
2639         break;
2640
2641     default:
2642         VerifyDevice(&Device);
2643         alcSetError(Device, ALC_INVALID_ENUM);
2644         if(Device) ALCdevice_DecRef(Device);
2645         break;
2646     }
2647
2648     return value;
2649 }
2650
2651
2652 static ALCsizei GetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
2653 {
2654     ALCsizei i;
2655
2656     if(size <= 0 || values == NULL)
2657     {
2658         alcSetError(device, ALC_INVALID_VALUE);
2659         return 0;
2660     }
2661
2662     if(!device)
2663     {
2664         switch(param)
2665         {
2666             case ALC_MAJOR_VERSION:
2667                 values[0] = alcMajorVersion;
2668                 return 1;
2669             case ALC_MINOR_VERSION:
2670                 values[0] = alcMinorVersion;
2671                 return 1;
2672
2673             case ALC_ATTRIBUTES_SIZE:
2674             case ALC_ALL_ATTRIBUTES:
2675             case ALC_FREQUENCY:
2676             case ALC_REFRESH:
2677             case ALC_SYNC:
2678             case ALC_MONO_SOURCES:
2679             case ALC_STEREO_SOURCES:
2680             case ALC_CAPTURE_SAMPLES:
2681             case ALC_FORMAT_CHANNELS_SOFT:
2682             case ALC_FORMAT_TYPE_SOFT:
2683                 alcSetError(NULL, ALC_INVALID_DEVICE);
2684                 return 0;
2685
2686             default:
2687                 alcSetError(NULL, ALC_INVALID_ENUM);
2688                 return 0;
2689         }
2690         return 0;
2691     }
2692
2693     if(device->Type == Capture)
2694     {
2695         switch(param)
2696         {
2697             case ALC_CAPTURE_SAMPLES:
2698                 V0(device->Backend,lock)();
2699                 values[0] = V0(device->Backend,availableSamples)();
2700                 V0(device->Backend,unlock)();
2701                 return 1;
2702
2703             case ALC_CONNECTED:
2704                 values[0] = device->Connected;
2705                 return 1;
2706
2707             default:
2708                 alcSetError(device, ALC_INVALID_ENUM);
2709                 return 0;
2710         }
2711         return 0;
2712     }
2713
2714     /* render device */
2715     switch(param)
2716     {
2717         case ALC_MAJOR_VERSION:
2718             values[0] = alcMajorVersion;
2719             return 1;
2720
2721         case ALC_MINOR_VERSION:
2722             values[0] = alcMinorVersion;
2723             return 1;
2724
2725         case ALC_EFX_MAJOR_VERSION:
2726             values[0] = alcEFXMajorVersion;
2727             return 1;
2728
2729         case ALC_EFX_MINOR_VERSION:
2730             values[0] = alcEFXMinorVersion;
2731             return 1;
2732
2733         case ALC_ATTRIBUTES_SIZE:
2734             values[0] = 17;
2735             return 1;
2736
2737         case ALC_ALL_ATTRIBUTES:
2738             if(size < 17)
2739             {
2740                 alcSetError(device, ALC_INVALID_VALUE);
2741                 return 0;
2742             }
2743
2744             i = 0;
2745             values[i++] = ALC_FREQUENCY;
2746             values[i++] = device->Frequency;
2747
2748             if(device->Type != Loopback)
2749             {
2750                 values[i++] = ALC_REFRESH;
2751                 values[i++] = device->Frequency / device->UpdateSize;
2752
2753                 values[i++] = ALC_SYNC;
2754                 values[i++] = ALC_FALSE;
2755             }
2756             else
2757             {
2758                 values[i++] = ALC_FORMAT_CHANNELS_SOFT;
2759                 values[i++] = device->FmtChans;
2760
2761                 values[i++] = ALC_FORMAT_TYPE_SOFT;
2762                 values[i++] = device->FmtType;
2763             }
2764
2765             values[i++] = ALC_MONO_SOURCES;
2766             values[i++] = device->NumMonoSources;
2767
2768             values[i++] = ALC_STEREO_SOURCES;
2769             values[i++] = device->NumStereoSources;
2770
2771             values[i++] = ALC_MAX_AUXILIARY_SENDS;
2772             values[i++] = device->NumAuxSends;
2773
2774             values[i++] = ALC_HRTF_SOFT;
2775             values[i++] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2776
2777             values[i++] = ALC_HRTF_STATUS_SOFT;
2778             values[i++] = device->Hrtf_Status;
2779
2780             values[i++] = 0;
2781             return i;
2782
2783         case ALC_FREQUENCY:
2784             values[0] = device->Frequency;
2785             return 1;
2786
2787         case ALC_REFRESH:
2788             if(device->Type == Loopback)
2789             {
2790                 alcSetError(device, ALC_INVALID_DEVICE);
2791                 return 0;
2792             }
2793             values[0] = device->Frequency / device->UpdateSize;
2794             return 1;
2795
2796         case ALC_SYNC:
2797             if(device->Type == Loopback)
2798             {
2799                 alcSetError(device, ALC_INVALID_DEVICE);
2800                 return 0;
2801             }
2802             values[0] = ALC_FALSE;
2803             return 1;
2804
2805         case ALC_FORMAT_CHANNELS_SOFT:
2806             if(device->Type != Loopback)
2807             {
2808                 alcSetError(device, ALC_INVALID_DEVICE);
2809                 return 0;
2810             }
2811             values[0] = device->FmtChans;
2812             return 1;
2813
2814         case ALC_FORMAT_TYPE_SOFT:
2815             if(device->Type != Loopback)
2816             {
2817                 alcSetError(device, ALC_INVALID_DEVICE);
2818                 return 0;
2819             }
2820             values[0] = device->FmtType;
2821             return 1;
2822
2823         case ALC_MONO_SOURCES:
2824             values[0] = device->NumMonoSources;
2825             return 1;
2826
2827         case ALC_STEREO_SOURCES:
2828             values[0] = device->NumStereoSources;
2829             return 1;
2830
2831         case ALC_MAX_AUXILIARY_SENDS:
2832             values[0] = device->NumAuxSends;
2833             return 1;
2834
2835         case ALC_CONNECTED:
2836             values[0] = device->Connected;
2837             return 1;
2838
2839         case ALC_HRTF_SOFT:
2840             values[0] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2841             return 1;
2842
2843         case ALC_HRTF_STATUS_SOFT:
2844             values[0] = device->Hrtf_Status;
2845             return 1;
2846
2847         case ALC_NUM_HRTF_SPECIFIERS_SOFT:
2848             FreeHrtfList(&device->Hrtf_List);
2849             device->Hrtf_List = EnumerateHrtf(device->DeviceName);
2850             values[0] = (ALCint)VECTOR_SIZE(device->Hrtf_List);
2851             return 1;
2852
2853         default:
2854             alcSetError(device, ALC_INVALID_ENUM);
2855             return 0;
2856     }
2857     return 0;
2858 }
2859
2860 /* alcGetIntegerv
2861  *
2862  * Returns information about the device and the version of OpenAL
2863  */
2864 ALC_API void ALC_APIENTRY alcGetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
2865 {
2866     VerifyDevice(&device);
2867     if(size <= 0 || values == NULL)
2868         alcSetError(device, ALC_INVALID_VALUE);
2869     else
2870         GetIntegerv(device, param, size, values);
2871     if(device) ALCdevice_DecRef(device);
2872 }
2873
2874 ALC_API void ALC_APIENTRY alcGetInteger64vSOFT(ALCdevice *device, ALCenum pname, ALCsizei size, ALCint64SOFT *values)
2875 {
2876     ALCint *ivals;
2877     ALsizei i;
2878
2879     VerifyDevice(&device);
2880     if(size <= 0 || values == NULL)
2881         alcSetError(device, ALC_INVALID_VALUE);
2882     else if(!device || device->Type == Capture)
2883     {
2884         ivals = malloc(size * sizeof(ALCint));
2885         size = GetIntegerv(device, pname, size, ivals);
2886         for(i = 0;i < size;i++)
2887             values[i] = ivals[i];
2888         free(ivals);
2889     }
2890     else /* render device */
2891     {
2892         switch(pname)
2893         {
2894             case ALC_ATTRIBUTES_SIZE:
2895                 *values = 19;
2896                 break;
2897
2898             case ALC_ALL_ATTRIBUTES:
2899                 if(size < 19)
2900                     alcSetError(device, ALC_INVALID_VALUE);
2901                 else
2902                 {
2903                     int i = 0;
2904
2905                     V0(device->Backend,lock)();
2906                     values[i++] = ALC_FREQUENCY;
2907                     values[i++] = device->Frequency;
2908
2909                     if(device->Type != Loopback)
2910                     {
2911                         values[i++] = ALC_REFRESH;
2912                         values[i++] = device->Frequency / device->UpdateSize;
2913
2914                         values[i++] = ALC_SYNC;
2915                         values[i++] = ALC_FALSE;
2916                     }
2917                     else
2918                     {
2919                         values[i++] = ALC_FORMAT_CHANNELS_SOFT;
2920                         values[i++] = device->FmtChans;
2921
2922                         values[i++] = ALC_FORMAT_TYPE_SOFT;
2923                         values[i++] = device->FmtType;
2924                     }
2925
2926                     values[i++] = ALC_MONO_SOURCES;
2927                     values[i++] = device->NumMonoSources;
2928
2929                     values[i++] = ALC_STEREO_SOURCES;
2930                     values[i++] = device->NumStereoSources;
2931
2932                     values[i++] = ALC_MAX_AUXILIARY_SENDS;
2933                     values[i++] = device->NumAuxSends;
2934
2935                     values[i++] = ALC_HRTF_SOFT;
2936                     values[i++] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2937
2938                     values[i++] = ALC_HRTF_STATUS_SOFT;
2939                     values[i++] = device->Hrtf_Status;
2940
2941                     values[i++] = ALC_DEVICE_CLOCK_SOFT;
2942                     values[i++] = device->ClockBase +
2943                                   (device->SamplesDone * DEVICE_CLOCK_RES / device->Frequency);
2944
2945                     values[i++] = 0;
2946                     V0(device->Backend,unlock)();
2947                 }
2948                 break;
2949
2950             case ALC_DEVICE_CLOCK_SOFT:
2951                 V0(device->Backend,lock)();
2952                 *values = device->ClockBase +
2953                           (device->SamplesDone * DEVICE_CLOCK_RES / device->Frequency);
2954                 V0(device->Backend,unlock)();
2955                 break;
2956
2957             default:
2958                 ivals = malloc(size * sizeof(ALCint));
2959                 size = GetIntegerv(device, pname, size, ivals);
2960                 for(i = 0;i < size;i++)
2961                     values[i] = ivals[i];
2962                 free(ivals);
2963                 break;
2964         }
2965     }
2966     if(device)
2967         ALCdevice_DecRef(device);
2968 }
2969
2970
2971 /* alcIsExtensionPresent
2972  *
2973  * Determines if there is support for a particular extension
2974  */
2975 ALC_API ALCboolean ALC_APIENTRY alcIsExtensionPresent(ALCdevice *device, const ALCchar *extName)
2976 {
2977     ALCboolean bResult = ALC_FALSE;
2978
2979     VerifyDevice(&device);
2980
2981     if(!extName)
2982         alcSetError(device, ALC_INVALID_VALUE);
2983     else
2984     {
2985         size_t len = strlen(extName);
2986         const char *ptr = (device ? alcExtensionList : alcNoDeviceExtList);
2987         while(ptr && *ptr)
2988         {
2989             if(strncasecmp(ptr, extName, len) == 0 &&
2990                (ptr[len] == '\0' || isspace(ptr[len])))
2991             {
2992                 bResult = ALC_TRUE;
2993                 break;
2994             }
2995             if((ptr=strchr(ptr, ' ')) != NULL)
2996             {
2997                 do {
2998                     ++ptr;
2999                 } while(isspace(*ptr));
3000             }
3001         }
3002     }
3003     if(device)
3004         ALCdevice_DecRef(device);
3005     return bResult;
3006 }
3007
3008
3009 /* alcGetProcAddress
3010  *
3011  * Retrieves the function address for a particular extension function
3012  */
3013 ALC_API ALCvoid* ALC_APIENTRY alcGetProcAddress(ALCdevice *device, const ALCchar *funcName)
3014 {
3015     ALCvoid *ptr = NULL;
3016
3017     if(!funcName)
3018     {
3019         VerifyDevice(&device);
3020         alcSetError(device, ALC_INVALID_VALUE);
3021         if(device) ALCdevice_DecRef(device);
3022     }
3023     else
3024     {
3025         ALsizei i = 0;
3026         while(alcFunctions[i].funcName && strcmp(alcFunctions[i].funcName, funcName) != 0)
3027             i++;
3028         ptr = alcFunctions[i].address;
3029     }
3030
3031     return ptr;
3032 }
3033
3034
3035 /* alcGetEnumValue
3036  *
3037  * Get the value for a particular ALC enumeration name
3038  */
3039 ALC_API ALCenum ALC_APIENTRY alcGetEnumValue(ALCdevice *device, const ALCchar *enumName)
3040 {
3041     ALCenum val = 0;
3042
3043     if(!enumName)
3044     {
3045         VerifyDevice(&device);
3046         alcSetError(device, ALC_INVALID_VALUE);
3047         if(device) ALCdevice_DecRef(device);
3048     }
3049     else
3050     {
3051         ALsizei i = 0;
3052         while(enumeration[i].enumName && strcmp(enumeration[i].enumName, enumName) != 0)
3053             i++;
3054         val = enumeration[i].value;
3055     }
3056
3057     return val;
3058 }
3059
3060
3061 /* alcCreateContext
3062  *
3063  * Create and attach a context to the given device.
3064  */
3065 ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCint *attrList)
3066 {
3067     ALCcontext *ALContext;
3068     ALCenum err;
3069
3070     LockLists();
3071     if(!VerifyDevice(&device) || device->Type == Capture || !device->Connected)
3072     {
3073         UnlockLists();
3074         alcSetError(device, ALC_INVALID_DEVICE);
3075         if(device) ALCdevice_DecRef(device);
3076         return NULL;
3077     }
3078
3079     ATOMIC_STORE(&device->LastError, ALC_NO_ERROR);
3080
3081     if((err=UpdateDeviceParams(device, attrList)) != ALC_NO_ERROR)
3082     {
3083         UnlockLists();
3084         alcSetError(device, err);
3085         if(err == ALC_INVALID_DEVICE)
3086         {
3087             V0(device->Backend,lock)();
3088             aluHandleDisconnect(device);
3089             V0(device->Backend,unlock)();
3090         }
3091         ALCdevice_DecRef(device);
3092         return NULL;
3093     }
3094
3095     ALContext = al_calloc(16, sizeof(ALCcontext)+sizeof(ALlistener));
3096     if(ALContext)
3097     {
3098         InitRef(&ALContext->ref, 1);
3099         ALContext->Listener = (ALlistener*)ALContext->_listener_mem;
3100
3101         VECTOR_INIT(ALContext->ActiveAuxSlots);
3102
3103         ALContext->VoiceCount = 0;
3104         ALContext->MaxVoices = 256;
3105         ALContext->Voices = al_calloc(16, ALContext->MaxVoices * sizeof(ALContext->Voices[0]));
3106     }
3107     if(!ALContext || !ALContext->Voices)
3108     {
3109         if(!ATOMIC_LOAD(&device->ContextList))
3110         {
3111             V0(device->Backend,stop)();
3112             device->Flags &= ~DEVICE_RUNNING;
3113         }
3114         UnlockLists();
3115
3116         if(ALContext)
3117         {
3118             al_free(ALContext->Voices);
3119             ALContext->Voices = NULL;
3120
3121             VECTOR_DEINIT(ALContext->ActiveAuxSlots);
3122
3123             al_free(ALContext);
3124             ALContext = NULL;
3125         }
3126
3127         alcSetError(device, ALC_OUT_OF_MEMORY);
3128         ALCdevice_DecRef(device);
3129         return NULL;
3130     }
3131
3132     ALContext->Device = device;
3133     ALCdevice_IncRef(device);
3134     InitContext(ALContext);
3135
3136     {
3137         ALCcontext *head = ATOMIC_LOAD(&device->ContextList);
3138         do {
3139             ALContext->next = head;
3140         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCcontext*, &device->ContextList, &head, ALContext));
3141     }
3142     UnlockLists();
3143
3144     ALCdevice_DecRef(device);
3145
3146     TRACE("Created context %p\n", ALContext);
3147     return ALContext;
3148 }
3149
3150 /* alcDestroyContext
3151  *
3152  * Remove a context from its device
3153  */
3154 ALC_API ALCvoid ALC_APIENTRY alcDestroyContext(ALCcontext *context)
3155 {
3156     ALCdevice *Device;
3157
3158     LockLists();
3159     /* alcGetContextsDevice sets an error for invalid contexts */
3160     Device = alcGetContextsDevice(context);
3161     if(Device)
3162     {
3163         ReleaseContext(context, Device);
3164         if(!ATOMIC_LOAD(&Device->ContextList))
3165         {
3166             V0(Device->Backend,stop)();
3167             Device->Flags &= ~DEVICE_RUNNING;
3168         }
3169     }
3170     UnlockLists();
3171 }
3172
3173
3174 /* alcGetCurrentContext
3175  *
3176  * Returns the currently active context on the calling thread
3177  */
3178 ALC_API ALCcontext* ALC_APIENTRY alcGetCurrentContext(void)
3179 {
3180     ALCcontext *Context = altss_get(LocalContext);
3181     if(!Context) Context = ATOMIC_LOAD(&GlobalContext);
3182     return Context;
3183 }
3184
3185 /* alcGetThreadContext
3186  *
3187  * Returns the currently active thread-local context
3188  */
3189 ALC_API ALCcontext* ALC_APIENTRY alcGetThreadContext(void)
3190 {
3191     return altss_get(LocalContext);
3192 }
3193
3194
3195 /* alcMakeContextCurrent
3196  *
3197  * Makes the given context the active process-wide context, and removes the
3198  * thread-local context for the calling thread.
3199  */
3200 ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context)
3201 {
3202     /* context must be valid or NULL */
3203     if(context && !VerifyContext(&context))
3204     {
3205         alcSetError(NULL, ALC_INVALID_CONTEXT);
3206         return ALC_FALSE;
3207     }
3208     /* context's reference count is already incremented */
3209     context = ATOMIC_EXCHANGE(ALCcontext*, &GlobalContext, context);
3210     if(context) ALCcontext_DecRef(context);
3211
3212     if((context=altss_get(LocalContext)) != NULL)
3213     {
3214         altss_set(LocalContext, NULL);
3215         ALCcontext_DecRef(context);
3216     }
3217
3218     return ALC_TRUE;
3219 }
3220
3221 /* alcSetThreadContext
3222  *
3223  * Makes the given context the active context for the current thread
3224  */
3225 ALC_API ALCboolean ALC_APIENTRY alcSetThreadContext(ALCcontext *context)
3226 {
3227     ALCcontext *old;
3228
3229     /* context must be valid or NULL */
3230     if(context && !VerifyContext(&context))
3231     {
3232         alcSetError(NULL, ALC_INVALID_CONTEXT);
3233         return ALC_FALSE;
3234     }
3235     /* context's reference count is already incremented */
3236     old = altss_get(LocalContext);
3237     altss_set(LocalContext, context);
3238     if(old) ALCcontext_DecRef(old);
3239
3240     return ALC_TRUE;
3241 }
3242
3243
3244 /* alcGetContextsDevice
3245  *
3246  * Returns the device that a particular context is attached to
3247  */
3248 ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice(ALCcontext *Context)
3249 {
3250     ALCdevice *Device;
3251
3252     if(!VerifyContext(&Context))
3253     {
3254         alcSetError(NULL, ALC_INVALID_CONTEXT);
3255         return NULL;
3256     }
3257     Device = Context->Device;
3258     ALCcontext_DecRef(Context);
3259
3260     return Device;
3261 }
3262
3263
3264 /* alcOpenDevice
3265  *
3266  * Opens the named device.
3267  */
3268 ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
3269 {
3270     const ALCchar *fmt;
3271     ALCdevice *device;
3272     ALCenum err;
3273
3274     DO_INITCONFIG();
3275
3276     if(!PlaybackBackend.name)
3277     {
3278         alcSetError(NULL, ALC_INVALID_VALUE);
3279         return NULL;
3280     }
3281
3282     if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0
3283 #ifdef _WIN32
3284         /* Some old Windows apps hardcode these expecting OpenAL to use a
3285          * specific audio API, even when they're not enumerated. Creative's
3286          * router effectively ignores them too.
3287          */
3288         || strcasecmp(deviceName, "DirectSound3D") == 0 || strcasecmp(deviceName, "DirectSound") == 0
3289         || strcasecmp(deviceName, "MMSYSTEM") == 0
3290 #endif
3291     ))
3292         deviceName = NULL;
3293
3294     device = al_calloc(16, sizeof(ALCdevice)+sizeof(ALeffectslot));
3295     if(!device)
3296     {
3297         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3298         return NULL;
3299     }
3300
3301     //Validate device
3302     InitRef(&device->ref, 1);
3303     device->Connected = ALC_TRUE;
3304     device->Type = Playback;
3305     ATOMIC_INIT(&device->LastError, ALC_NO_ERROR);
3306
3307     device->Flags = 0;
3308     device->Bs2b = NULL;
3309     device->Uhj_Encoder = NULL;
3310     VECTOR_INIT(device->Hrtf_List);
3311     AL_STRING_INIT(device->Hrtf_Name);
3312     device->Render_Mode = NormalRender;
3313     AL_STRING_INIT(device->DeviceName);
3314     device->Dry.Buffer = NULL;
3315     device->Dry.NumChannels = 0;
3316     device->VirtOut.Buffer = NULL;
3317     device->VirtOut.NumChannels = 0;
3318     device->RealOut.Buffer = NULL;
3319     device->RealOut.NumChannels = 0;
3320
3321     ATOMIC_INIT(&device->ContextList, NULL);
3322
3323     device->ClockBase = 0;
3324     device->SamplesDone = 0;
3325
3326     device->MaxNoOfSources = 256;
3327     device->AuxiliaryEffectSlotMax = 4;
3328     device->NumAuxSends = MAX_SENDS;
3329
3330     InitUIntMap(&device->BufferMap, ~0);
3331     InitUIntMap(&device->EffectMap, ~0);
3332     InitUIntMap(&device->FilterMap, ~0);
3333
3334     //Set output format
3335     device->FmtChans = DevFmtChannelsDefault;
3336     device->FmtType = DevFmtTypeDefault;
3337     device->Frequency = DEFAULT_OUTPUT_RATE;
3338     device->IsHeadphones = AL_FALSE;
3339     device->NumUpdates = 4;
3340     device->UpdateSize = 1024;
3341
3342     if(!PlaybackBackend.getFactory)
3343         device->Backend = create_backend_wrapper(device, &PlaybackBackend.Funcs,
3344                                                  ALCbackend_Playback);
3345     else
3346     {
3347         ALCbackendFactory *factory = PlaybackBackend.getFactory();
3348         device->Backend = V(factory,createBackend)(device, ALCbackend_Playback);
3349     }
3350     if(!device->Backend)
3351     {
3352         al_free(device);
3353         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3354         return NULL;
3355     }
3356
3357
3358     if(ConfigValueStr(deviceName, NULL, "channels", &fmt))
3359     {
3360         static const struct {
3361             const char name[16];
3362             enum DevFmtChannels chans;
3363         } chanlist[] = {
3364             { "mono",       DevFmtMono   },
3365             { "stereo",     DevFmtStereo },
3366             { "quad",       DevFmtQuad   },
3367             { "surround51", DevFmtX51    },
3368             { "surround61", DevFmtX61    },
3369             { "surround71", DevFmtX71    },
3370             { "surround51rear", DevFmtX51Rear },
3371         };
3372         size_t i;
3373
3374         for(i = 0;i < COUNTOF(chanlist);i++)
3375         {
3376             if(strcasecmp(chanlist[i].name, fmt) == 0)
3377             {
3378                 device->FmtChans = chanlist[i].chans;
3379                 device->Flags |= DEVICE_CHANNELS_REQUEST;
3380                 break;
3381             }
3382         }
3383         if(i == COUNTOF(chanlist))
3384             ERR("Unsupported channels: %s\n", fmt);
3385     }
3386     if(ConfigValueStr(deviceName, NULL, "sample-type", &fmt))
3387     {
3388         static const struct {
3389             const char name[16];
3390             enum DevFmtType type;
3391         } typelist[] = {
3392             { "int8",    DevFmtByte   },
3393             { "uint8",   DevFmtUByte  },
3394             { "int16",   DevFmtShort  },
3395             { "uint16",  DevFmtUShort },
3396             { "int32",   DevFmtInt    },
3397             { "uint32",  DevFmtUInt   },
3398             { "float32", DevFmtFloat  },
3399         };
3400         size_t i;
3401
3402         for(i = 0;i < COUNTOF(typelist);i++)
3403         {
3404             if(strcasecmp(typelist[i].name, fmt) == 0)
3405             {
3406                 device->FmtType = typelist[i].type;
3407                 device->Flags |= DEVICE_SAMPLE_TYPE_REQUEST;
3408                 break;
3409             }
3410         }
3411         if(i == COUNTOF(typelist))
3412             ERR("Unsupported sample-type: %s\n", fmt);
3413     }
3414
3415     if(ConfigValueUInt(deviceName, NULL, "frequency", &device->Frequency))
3416     {
3417         device->Flags |= DEVICE_FREQUENCY_REQUEST;
3418         if(device->Frequency < MIN_OUTPUT_RATE)
3419             ERR("%uhz request clamped to %uhz minimum\n", device->Frequency, MIN_OUTPUT_RATE);
3420         device->Frequency = maxu(device->Frequency, MIN_OUTPUT_RATE);
3421     }
3422
3423     ConfigValueUInt(deviceName, NULL, "periods", &device->NumUpdates);
3424     device->NumUpdates = clampu(device->NumUpdates, 2, 16);
3425
3426     ConfigValueUInt(deviceName, NULL, "period_size", &device->UpdateSize);
3427     device->UpdateSize = clampu(device->UpdateSize, 64, 8192);
3428     if((CPUCapFlags&(CPU_CAP_SSE|CPU_CAP_NEON)) != 0)
3429         device->UpdateSize = (device->UpdateSize+3)&~3;
3430
3431     ConfigValueUInt(deviceName, NULL, "sources", &device->MaxNoOfSources);
3432     if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256;
3433
3434     ConfigValueUInt(deviceName, NULL, "slots", &device->AuxiliaryEffectSlotMax);
3435     if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4;
3436
3437     ConfigValueUInt(deviceName, NULL, "sends", &device->NumAuxSends);
3438     if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS;
3439
3440     device->NumStereoSources = 1;
3441     device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
3442
3443     // Find a playback device to open
3444     if((err=V(device->Backend,open)(deviceName)) != ALC_NO_ERROR)
3445     {
3446         DELETE_OBJ(device->Backend);
3447         al_free(device);
3448         alcSetError(NULL, err);
3449         return NULL;
3450     }
3451
3452     if(DefaultEffect.type != AL_EFFECT_NULL)
3453     {
3454         device->DefaultSlot = (ALeffectslot*)device->_slot_mem;
3455         if(InitEffectSlot(device->DefaultSlot) != AL_NO_ERROR)
3456         {
3457             device->DefaultSlot = NULL;
3458             ERR("Failed to initialize the default effect slot\n");
3459         }
3460         else
3461         {
3462             aluInitEffectPanning(device->DefaultSlot);
3463             if(InitializeEffect(device, device->DefaultSlot, &DefaultEffect) != AL_NO_ERROR)
3464             {
3465                 DeinitEffectSlot(device->DefaultSlot);
3466                 device->DefaultSlot = NULL;
3467                 ERR("Failed to initialize the default effect\n");
3468             }
3469         }
3470     }
3471
3472     {
3473         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3474         do {
3475             device->next = head;
3476         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3477     }
3478
3479     TRACE("Created device %p, \"%s\"\n", device, al_string_get_cstr(device->DeviceName));
3480     return device;
3481 }
3482
3483 /* alcCloseDevice
3484  *
3485  * Closes the given device.
3486  */
3487 ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *device)
3488 {
3489     ALCdevice *list, *origdev, *nextdev;
3490     ALCcontext *ctx;
3491
3492     LockLists();
3493     list = ATOMIC_LOAD(&DeviceList);
3494     do {
3495         if(list == device)
3496             break;
3497     } while((list=list->next) != NULL);
3498     if(!list || list->Type == Capture)
3499     {
3500         alcSetError(list, ALC_INVALID_DEVICE);
3501         UnlockLists();
3502         return ALC_FALSE;
3503     }
3504
3505     origdev = device;
3506     nextdev = device->next;
3507     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCdevice*, &DeviceList, &origdev, nextdev))
3508     {
3509         do {
3510             list = origdev;
3511             origdev = device;
3512         } while(!COMPARE_EXCHANGE(&list->next, &origdev, nextdev));
3513     }
3514     UnlockLists();
3515
3516     ctx = ATOMIC_LOAD(&device->ContextList);
3517     while(ctx != NULL)
3518     {
3519         ALCcontext *next = ctx->next;
3520         WARN("Releasing context %p\n", ctx);
3521         ReleaseContext(ctx, device);
3522         ctx = next;
3523     }
3524     if((device->Flags&DEVICE_RUNNING))
3525         V0(device->Backend,stop)();
3526     device->Flags &= ~DEVICE_RUNNING;
3527
3528     ALCdevice_DecRef(device);
3529
3530     return ALC_TRUE;
3531 }
3532
3533
3534 /************************************************
3535  * ALC capture functions
3536  ************************************************/
3537 ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei samples)
3538 {
3539     ALCdevice *device = NULL;
3540     ALCenum err;
3541
3542     DO_INITCONFIG();
3543
3544     if(!CaptureBackend.name)
3545     {
3546         alcSetError(NULL, ALC_INVALID_VALUE);
3547         return NULL;
3548     }
3549
3550     if(samples <= 0)
3551     {
3552         alcSetError(NULL, ALC_INVALID_VALUE);
3553         return NULL;
3554     }
3555
3556     if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0))
3557         deviceName = NULL;
3558
3559     device = al_calloc(16, sizeof(ALCdevice));
3560     if(!device)
3561     {
3562         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3563         return NULL;
3564     }
3565
3566     //Validate device
3567     InitRef(&device->ref, 1);
3568     device->Connected = ALC_TRUE;
3569     device->Type = Capture;
3570
3571     VECTOR_INIT(device->Hrtf_List);
3572     AL_STRING_INIT(device->Hrtf_Name);
3573
3574     AL_STRING_INIT(device->DeviceName);
3575     device->Dry.Buffer = NULL;
3576     device->Dry.NumChannels = 0;
3577     device->VirtOut.Buffer = NULL;
3578     device->VirtOut.NumChannels = 0;
3579     device->RealOut.Buffer = NULL;
3580     device->RealOut.NumChannels = 0;
3581
3582     InitUIntMap(&device->BufferMap, ~0);
3583     InitUIntMap(&device->EffectMap, ~0);
3584     InitUIntMap(&device->FilterMap, ~0);
3585
3586     if(!CaptureBackend.getFactory)
3587         device->Backend = create_backend_wrapper(device, &CaptureBackend.Funcs,
3588                                                  ALCbackend_Capture);
3589     else
3590     {
3591         ALCbackendFactory *factory = CaptureBackend.getFactory();
3592         device->Backend = V(factory,createBackend)(device, ALCbackend_Capture);
3593     }
3594     if(!device->Backend)
3595     {
3596         al_free(device);
3597         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3598         return NULL;
3599     }
3600
3601     device->Flags |= DEVICE_FREQUENCY_REQUEST;
3602     device->Frequency = frequency;
3603
3604     device->Flags |= DEVICE_CHANNELS_REQUEST | DEVICE_SAMPLE_TYPE_REQUEST;
3605     if(DecomposeDevFormat(format, &device->FmtChans, &device->FmtType) == AL_FALSE)
3606     {
3607         al_free(device);
3608         alcSetError(NULL, ALC_INVALID_ENUM);
3609         return NULL;
3610     }
3611     device->IsHeadphones = AL_FALSE;
3612
3613     device->UpdateSize = samples;
3614     device->NumUpdates = 1;
3615
3616     if((err=V(device->Backend,open)(deviceName)) != ALC_NO_ERROR)
3617     {
3618         al_free(device);
3619         alcSetError(NULL, err);
3620         return NULL;
3621     }
3622
3623     {
3624         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3625         do {
3626             device->next = head;
3627         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3628     }
3629
3630     TRACE("Created device %p, \"%s\"\n", device, al_string_get_cstr(device->DeviceName));
3631     return device;
3632 }
3633
3634 ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice(ALCdevice *device)
3635 {
3636     ALCdevice *list, *next, *nextdev;
3637
3638     LockLists();
3639     list = ATOMIC_LOAD(&DeviceList);
3640     do {
3641         if(list == device)
3642             break;
3643     } while((list=list->next) != NULL);
3644     if(!list || list->Type != Capture)
3645     {
3646         alcSetError(list, ALC_INVALID_DEVICE);
3647         UnlockLists();
3648         return ALC_FALSE;
3649     }
3650
3651     next = device;
3652     nextdev = device->next;
3653     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCdevice*, &DeviceList, &next, nextdev))
3654     {
3655         do {
3656             list = next;
3657             next = device;
3658         } while(!COMPARE_EXCHANGE(&list->next, &next, nextdev));
3659     }
3660     UnlockLists();
3661
3662     ALCdevice_DecRef(device);
3663
3664     return ALC_TRUE;
3665 }
3666
3667 ALC_API void ALC_APIENTRY alcCaptureStart(ALCdevice *device)
3668 {
3669     if(!VerifyDevice(&device) || device->Type != Capture)
3670         alcSetError(device, ALC_INVALID_DEVICE);
3671     else
3672     {
3673         V0(device->Backend,lock)();
3674         if(!device->Connected)
3675             alcSetError(device, ALC_INVALID_DEVICE);
3676         else if(!(device->Flags&DEVICE_RUNNING))
3677         {
3678             if(V0(device->Backend,start)())
3679                 device->Flags |= DEVICE_RUNNING;
3680             else
3681             {
3682                 aluHandleDisconnect(device);
3683                 alcSetError(device, ALC_INVALID_DEVICE);
3684             }
3685         }
3686         V0(device->Backend,unlock)();
3687     }
3688
3689     if(device) ALCdevice_DecRef(device);
3690 }
3691
3692 ALC_API void ALC_APIENTRY alcCaptureStop(ALCdevice *device)
3693 {
3694     if(!VerifyDevice(&device) || device->Type != Capture)
3695         alcSetError(device, ALC_INVALID_DEVICE);
3696     else
3697     {
3698         V0(device->Backend,lock)();
3699         if((device->Flags&DEVICE_RUNNING))
3700             V0(device->Backend,stop)();
3701         device->Flags &= ~DEVICE_RUNNING;
3702         V0(device->Backend,unlock)();
3703     }
3704
3705     if(device) ALCdevice_DecRef(device);
3706 }
3707
3708 ALC_API void ALC_APIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
3709 {
3710     if(!VerifyDevice(&device) || device->Type != Capture)
3711         alcSetError(device, ALC_INVALID_DEVICE);
3712     else
3713     {
3714         ALCenum err = ALC_INVALID_VALUE;
3715
3716         V0(device->Backend,lock)();
3717         if(samples >= 0 && V0(device->Backend,availableSamples)() >= (ALCuint)samples)
3718             err = V(device->Backend,captureSamples)(buffer, samples);
3719         V0(device->Backend,unlock)();
3720
3721         if(err != ALC_NO_ERROR)
3722             alcSetError(device, err);
3723     }
3724     if(device) ALCdevice_DecRef(device);
3725 }
3726
3727
3728 /************************************************
3729  * ALC loopback functions
3730  ************************************************/
3731
3732 /* alcLoopbackOpenDeviceSOFT
3733  *
3734  * Open a loopback device, for manual rendering.
3735  */
3736 ALC_API ALCdevice* ALC_APIENTRY alcLoopbackOpenDeviceSOFT(const ALCchar *deviceName)
3737 {
3738     ALCbackendFactory *factory;
3739     ALCdevice *device;
3740
3741     DO_INITCONFIG();
3742
3743     /* Make sure the device name, if specified, is us. */
3744     if(deviceName && strcmp(deviceName, alcDefaultName) != 0)
3745     {
3746         alcSetError(NULL, ALC_INVALID_VALUE);
3747         return NULL;
3748     }
3749
3750     device = al_calloc(16, sizeof(ALCdevice));
3751     if(!device)
3752     {
3753         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3754         return NULL;
3755     }
3756
3757     //Validate device
3758     InitRef(&device->ref, 1);
3759     device->Connected = ALC_TRUE;
3760     device->Type = Loopback;
3761     ATOMIC_INIT(&device->LastError, ALC_NO_ERROR);
3762
3763     device->Flags = 0;
3764     VECTOR_INIT(device->Hrtf_List);
3765     AL_STRING_INIT(device->Hrtf_Name);
3766     device->Bs2b = NULL;
3767     device->Uhj_Encoder = NULL;
3768     device->Render_Mode = NormalRender;
3769     AL_STRING_INIT(device->DeviceName);
3770     device->Dry.Buffer = NULL;
3771     device->Dry.NumChannels = 0;
3772     device->VirtOut.Buffer = NULL;
3773     device->VirtOut.NumChannels = 0;
3774     device->RealOut.Buffer = NULL;
3775     device->RealOut.NumChannels = 0;
3776
3777     ATOMIC_INIT(&device->ContextList, NULL);
3778
3779     device->ClockBase = 0;
3780     device->SamplesDone = 0;
3781
3782     device->MaxNoOfSources = 256;
3783     device->AuxiliaryEffectSlotMax = 4;
3784     device->NumAuxSends = MAX_SENDS;
3785
3786     InitUIntMap(&device->BufferMap, ~0);
3787     InitUIntMap(&device->EffectMap, ~0);
3788     InitUIntMap(&device->FilterMap, ~0);
3789
3790     factory = ALCloopbackFactory_getFactory();
3791     device->Backend = V(factory,createBackend)(device, ALCbackend_Loopback);
3792     if(!device->Backend)
3793     {
3794         al_free(device);
3795         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3796         return NULL;
3797     }
3798
3799     //Set output format
3800     device->NumUpdates = 0;
3801     device->UpdateSize = 0;
3802
3803     device->Frequency = DEFAULT_OUTPUT_RATE;
3804     device->FmtChans = DevFmtChannelsDefault;
3805     device->FmtType = DevFmtTypeDefault;
3806     device->IsHeadphones = AL_FALSE;
3807
3808     ConfigValueUInt(NULL, NULL, "sources", &device->MaxNoOfSources);
3809     if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256;
3810
3811     ConfigValueUInt(NULL, NULL, "slots", &device->AuxiliaryEffectSlotMax);
3812     if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4;
3813
3814     ConfigValueUInt(NULL, NULL, "sends", &device->NumAuxSends);
3815     if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS;
3816
3817     device->NumStereoSources = 1;
3818     device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
3819
3820     // Open the "backend"
3821     V(device->Backend,open)("Loopback");
3822
3823     {
3824         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3825         do {
3826             device->next = head;
3827         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3828     }
3829
3830     TRACE("Created device %p\n", device);
3831     return device;
3832 }
3833
3834 /* alcIsRenderFormatSupportedSOFT
3835  *
3836  * Determines if the loopback device supports the given format for rendering.
3837  */
3838 ALC_API ALCboolean ALC_APIENTRY alcIsRenderFormatSupportedSOFT(ALCdevice *device, ALCsizei freq, ALCenum channels, ALCenum type)
3839 {
3840     ALCboolean ret = ALC_FALSE;
3841
3842     if(!VerifyDevice(&device) || device->Type != Loopback)
3843         alcSetError(device, ALC_INVALID_DEVICE);
3844     else if(freq <= 0)
3845         alcSetError(device, ALC_INVALID_VALUE);
3846     else
3847     {
3848         if(IsValidALCType(type) && BytesFromDevFmt(type) > 0 &&
3849            IsValidALCChannels(channels) && ChannelsFromDevFmt(channels) > 0 &&
3850            freq >= MIN_OUTPUT_RATE)
3851             ret = ALC_TRUE;
3852     }
3853     if(device) ALCdevice_DecRef(device);
3854
3855     return ret;
3856 }
3857
3858 /* alcRenderSamplesSOFT
3859  *
3860  * Renders some samples into a buffer, using the format last set by the
3861  * attributes given to alcCreateContext.
3862  */
3863 FORCE_ALIGN ALC_API void ALC_APIENTRY alcRenderSamplesSOFT(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
3864 {
3865     if(!VerifyDevice(&device) || device->Type != Loopback)
3866         alcSetError(device, ALC_INVALID_DEVICE);
3867     else if(samples < 0 || (samples > 0 && buffer == NULL))
3868         alcSetError(device, ALC_INVALID_VALUE);
3869     else
3870         aluMixData(device, buffer, samples);
3871     if(device) ALCdevice_DecRef(device);
3872 }
3873
3874
3875 /************************************************
3876  * ALC DSP pause/resume functions
3877  ************************************************/
3878
3879 /* alcDevicePauseSOFT
3880  *
3881  * Pause the DSP to stop audio processing.
3882  */
3883 ALC_API void ALC_APIENTRY alcDevicePauseSOFT(ALCdevice *device)
3884 {
3885     if(!VerifyDevice(&device) || device->Type != Playback)
3886         alcSetError(device, ALC_INVALID_DEVICE);
3887     else
3888     {
3889         LockLists();
3890         if((device->Flags&DEVICE_RUNNING))
3891             V0(device->Backend,stop)();
3892         device->Flags &= ~DEVICE_RUNNING;
3893         device->Flags |= DEVICE_PAUSED;
3894         UnlockLists();
3895     }
3896     if(device) ALCdevice_DecRef(device);
3897 }
3898
3899 /* alcDeviceResumeSOFT
3900  *
3901  * Resume the DSP to restart audio processing.
3902  */
3903 ALC_API void ALC_APIENTRY alcDeviceResumeSOFT(ALCdevice *device)
3904 {
3905     if(!VerifyDevice(&device) || device->Type != Playback)
3906         alcSetError(device, ALC_INVALID_DEVICE);
3907     else
3908     {
3909         LockLists();
3910         if((device->Flags&DEVICE_PAUSED))
3911         {
3912             device->Flags &= ~DEVICE_PAUSED;
3913             if(ATOMIC_LOAD(&device->ContextList) != NULL)
3914             {
3915                 if(V0(device->Backend,start)() != ALC_FALSE)
3916                     device->Flags |= DEVICE_RUNNING;
3917                 else
3918                 {
3919                     alcSetError(device, ALC_INVALID_DEVICE);
3920                     V0(device->Backend,lock)();
3921                     aluHandleDisconnect(device);
3922                     V0(device->Backend,unlock)();
3923                 }
3924             }
3925         }
3926         UnlockLists();
3927     }
3928     if(device) ALCdevice_DecRef(device);
3929 }
3930
3931
3932 /************************************************
3933  * ALC HRTF functions
3934  ************************************************/
3935
3936 /* alcGetStringiSOFT
3937  *
3938  * Gets a string parameter at the given index.
3939  */
3940 ALC_API const ALCchar* ALC_APIENTRY alcGetStringiSOFT(ALCdevice *device, ALCenum paramName, ALCsizei index)
3941 {
3942     const ALCchar *str = NULL;
3943
3944     if(!VerifyDevice(&device) || device->Type == Capture)
3945         alcSetError(device, ALC_INVALID_DEVICE);
3946     else switch(paramName)
3947     {
3948         case ALC_HRTF_SPECIFIER_SOFT:
3949             if(index >= 0 && (size_t)index < VECTOR_SIZE(device->Hrtf_List))
3950                 str = al_string_get_cstr(VECTOR_ELEM(device->Hrtf_List, index).name);
3951             else
3952                 alcSetError(device, ALC_INVALID_VALUE);
3953             break;
3954
3955         default:
3956             alcSetError(device, ALC_INVALID_ENUM);
3957             break;
3958     }
3959     if(device) ALCdevice_DecRef(device);
3960
3961     return str;
3962 }
3963
3964 /* alcResetDeviceSOFT
3965  *
3966  * Resets the given device output, using the specified attribute list.
3967  */
3968 ALC_API ALCboolean ALC_APIENTRY alcResetDeviceSOFT(ALCdevice *device, const ALCint *attribs)
3969 {
3970     ALCenum err;
3971
3972     LockLists();
3973     if(!VerifyDevice(&device) || device->Type == Capture || !device->Connected)
3974     {
3975         UnlockLists();
3976         alcSetError(device, ALC_INVALID_DEVICE);
3977         if(device) ALCdevice_DecRef(device);
3978         return ALC_FALSE;
3979     }
3980
3981     if((err=UpdateDeviceParams(device, attribs)) != ALC_NO_ERROR)
3982     {
3983         UnlockLists();
3984         alcSetError(device, err);
3985         if(err == ALC_INVALID_DEVICE)
3986         {
3987             V0(device->Backend,lock)();
3988             aluHandleDisconnect(device);
3989             V0(device->Backend,unlock)();
3990         }
3991         ALCdevice_DecRef(device);
3992         return ALC_FALSE;
3993     }
3994     UnlockLists();
3995     ALCdevice_DecRef(device);
3996
3997     return ALC_TRUE;
3998 }