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->Effect.State;
2047
2048         state->OutBuffer = device->Dry.Buffer;
2049         state->OutChannels = device->Dry.NumChannels;
2050         if(V(state,deviceUpdate)(device) == AL_FALSE)
2051         {
2052             RestoreFPUMode(&oldMode);
2053             return ALC_INVALID_DEVICE;
2054         }
2055         UpdateEffectSlotProps(slot);
2056     }
2057
2058     context = ATOMIC_LOAD(&device->ContextList);
2059     while(context)
2060     {
2061         ALsizei pos;
2062
2063         ReadLock(&context->PropLock);
2064         LockUIntMapRead(&context->EffectSlotMap);
2065         for(pos = 0;pos < context->EffectSlotMap.size;pos++)
2066         {
2067             ALeffectslot *slot = context->EffectSlotMap.array[pos].value;
2068             ALeffectState *state = slot->Effect.State;
2069
2070             state->OutBuffer = device->Dry.Buffer;
2071             state->OutChannels = device->Dry.NumChannels;
2072             if(V(state,deviceUpdate)(device) == AL_FALSE)
2073             {
2074                 UnlockUIntMapRead(&context->EffectSlotMap);
2075                 ReadUnlock(&context->PropLock);
2076                 RestoreFPUMode(&oldMode);
2077                 return ALC_INVALID_DEVICE;
2078             }
2079
2080             UpdateEffectSlotProps(slot);
2081         }
2082         UnlockUIntMapRead(&context->EffectSlotMap);
2083
2084         LockUIntMapRead(&context->SourceMap);
2085         for(pos = 0;pos < context->SourceMap.size;pos++)
2086         {
2087             ALsource *source = context->SourceMap.array[pos].value;
2088             ALuint s = device->NumAuxSends;
2089             while(s < MAX_SENDS)
2090             {
2091                 if(source->Send[s].Slot)
2092                     DecrementRef(&source->Send[s].Slot->ref);
2093                 source->Send[s].Slot = NULL;
2094                 source->Send[s].Gain = 1.0f;
2095                 source->Send[s].GainHF = 1.0f;
2096                 source->Send[s].HFReference = LOWPASSFREQREF;
2097                 source->Send[s].GainLF = 1.0f;
2098                 source->Send[s].LFReference = HIGHPASSFREQREF;
2099                 s++;
2100             }
2101         }
2102         UnlockUIntMapRead(&context->SourceMap);
2103
2104         UpdateAllSourceProps(context);
2105         ReadUnlock(&context->PropLock);
2106
2107         context = context->next;
2108     }
2109     RestoreFPUMode(&oldMode);
2110
2111     if(!(device->Flags&DEVICE_PAUSED))
2112     {
2113         if(V0(device->Backend,start)() == ALC_FALSE)
2114             return ALC_INVALID_DEVICE;
2115         device->Flags |= DEVICE_RUNNING;
2116     }
2117
2118     return ALC_NO_ERROR;
2119 }
2120
2121 /* FreeDevice
2122  *
2123  * Frees the device structure, and destroys any objects the app failed to
2124  * delete. Called once there's no more references on the device.
2125  */
2126 static ALCvoid FreeDevice(ALCdevice *device)
2127 {
2128     TRACE("%p\n", device);
2129
2130     V0(device->Backend,close)();
2131     DELETE_OBJ(device->Backend);
2132     device->Backend = NULL;
2133
2134     almtx_destroy(&device->BackendLock);
2135
2136     if(device->DefaultSlot)
2137     {
2138         DeinitEffectSlot(device->DefaultSlot);
2139         device->DefaultSlot = NULL;
2140     }
2141
2142     if(device->BufferMap.size > 0)
2143     {
2144         WARN("(%p) Deleting %d Buffer%s\n", device, device->BufferMap.size,
2145              (device->BufferMap.size==1)?"":"s");
2146         ReleaseALBuffers(device);
2147     }
2148     ResetUIntMap(&device->BufferMap);
2149
2150     if(device->EffectMap.size > 0)
2151     {
2152         WARN("(%p) Deleting %d Effect%s\n", device, device->EffectMap.size,
2153              (device->EffectMap.size==1)?"":"s");
2154         ReleaseALEffects(device);
2155     }
2156     ResetUIntMap(&device->EffectMap);
2157
2158     if(device->FilterMap.size > 0)
2159     {
2160         WARN("(%p) Deleting %d Filter%s\n", device, device->FilterMap.size,
2161              (device->FilterMap.size==1)?"":"s");
2162         ReleaseALFilters(device);
2163     }
2164     ResetUIntMap(&device->FilterMap);
2165
2166     AL_STRING_DEINIT(device->Hrtf_Name);
2167     FreeHrtfList(&device->Hrtf_List);
2168
2169     al_free(device->Bs2b);
2170     device->Bs2b = NULL;
2171
2172     al_free(device->Uhj_Encoder);
2173     device->Uhj_Encoder = NULL;
2174
2175     bformatdec_free(device->AmbiDecoder);
2176     device->AmbiDecoder = NULL;
2177
2178     AL_STRING_DEINIT(device->DeviceName);
2179
2180     al_free(device->Dry.Buffer);
2181     device->Dry.Buffer = NULL;
2182     device->Dry.NumChannels = 0;
2183     device->VirtOut.Buffer = NULL;
2184     device->VirtOut.NumChannels = 0;
2185     device->RealOut.Buffer = NULL;
2186     device->RealOut.NumChannels = 0;
2187
2188     al_free(device);
2189 }
2190
2191
2192 void ALCdevice_IncRef(ALCdevice *device)
2193 {
2194     uint ref;
2195     ref = IncrementRef(&device->ref);
2196     TRACEREF("%p increasing refcount to %u\n", device, ref);
2197 }
2198
2199 void ALCdevice_DecRef(ALCdevice *device)
2200 {
2201     uint ref;
2202     ref = DecrementRef(&device->ref);
2203     TRACEREF("%p decreasing refcount to %u\n", device, ref);
2204     if(ref == 0) FreeDevice(device);
2205 }
2206
2207 /* VerifyDevice
2208  *
2209  * Checks if the device handle is valid, and increments its ref count if so.
2210  */
2211 static ALCboolean VerifyDevice(ALCdevice **device)
2212 {
2213     ALCdevice *tmpDevice;
2214
2215     LockLists();
2216     tmpDevice = ATOMIC_LOAD(&DeviceList);
2217     while(tmpDevice)
2218     {
2219         if(tmpDevice == *device)
2220         {
2221             ALCdevice_IncRef(tmpDevice);
2222             UnlockLists();
2223             return ALC_TRUE;
2224         }
2225         tmpDevice = tmpDevice->next;
2226     }
2227     UnlockLists();
2228
2229     *device = NULL;
2230     return ALC_FALSE;
2231 }
2232
2233
2234 /* InitContext
2235  *
2236  * Initializes context fields
2237  */
2238 static ALvoid InitContext(ALCcontext *Context)
2239 {
2240     ALlistener *listener = Context->Listener;
2241
2242     //Initialise listener
2243     listener->Gain = 1.0f;
2244     listener->MetersPerUnit = 1.0f;
2245     listener->Position[0] = 0.0f;
2246     listener->Position[1] = 0.0f;
2247     listener->Position[2] = 0.0f;
2248     listener->Velocity[0] = 0.0f;
2249     listener->Velocity[1] = 0.0f;
2250     listener->Velocity[2] = 0.0f;
2251     listener->Forward[0] = 0.0f;
2252     listener->Forward[1] = 0.0f;
2253     listener->Forward[2] = -1.0f;
2254     listener->Up[0] = 0.0f;
2255     listener->Up[1] = 1.0f;
2256     listener->Up[2] = 0.0f;
2257
2258     aluMatrixfSet(&listener->Params.Matrix,
2259         1.0f, 0.0f, 0.0f, 0.0f,
2260         0.0f, 1.0f, 0.0f, 0.0f,
2261         0.0f, 0.0f, 1.0f, 0.0f,
2262         0.0f, 0.0f, 0.0f, 1.0f
2263     );
2264     aluVectorSet(&listener->Params.Velocity, 0.0f, 0.0f, 0.0f, 0.0f);
2265     listener->Params.Gain = 1.0f;
2266     listener->Params.MetersPerUnit = 1.0f;
2267     listener->Params.DopplerFactor = 1.0f;
2268     listener->Params.SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
2269
2270     ATOMIC_INIT(&listener->Update, NULL);
2271     ATOMIC_INIT(&listener->FreeList, NULL);
2272
2273     //Validate Context
2274     InitRef(&Context->UpdateCount, 0);
2275     ATOMIC_INIT(&Context->HoldUpdates, AL_FALSE);
2276     RWLockInit(&Context->PropLock);
2277     ATOMIC_INIT(&Context->LastError, AL_NO_ERROR);
2278     InitUIntMap(&Context->SourceMap, Context->Device->MaxNoOfSources);
2279     InitUIntMap(&Context->EffectSlotMap, Context->Device->AuxiliaryEffectSlotMax);
2280
2281     //Set globals
2282     Context->DistanceModel = DefaultDistanceModel;
2283     Context->SourceDistanceModel = AL_FALSE;
2284     Context->DopplerFactor = 1.0f;
2285     Context->DopplerVelocity = 1.0f;
2286     Context->SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
2287     ATOMIC_INIT(&Context->DeferUpdates, AL_FALSE);
2288
2289     Context->ExtensionList = alExtList;
2290 }
2291
2292
2293 /* FreeContext
2294  *
2295  * Cleans up the context, and destroys any remaining objects the app failed to
2296  * delete. Called once there's no more references on the context.
2297  */
2298 static void FreeContext(ALCcontext *context)
2299 {
2300     ALlistener *listener = context->Listener;
2301     struct ALlistenerProps *lprops;
2302     size_t count;
2303
2304     TRACE("%p\n", context);
2305
2306     if(context->SourceMap.size > 0)
2307     {
2308         WARN("(%p) Deleting %d Source%s\n", context, context->SourceMap.size,
2309              (context->SourceMap.size==1)?"":"s");
2310         ReleaseALSources(context);
2311     }
2312     ResetUIntMap(&context->SourceMap);
2313
2314     if(context->EffectSlotMap.size > 0)
2315     {
2316         WARN("(%p) Deleting %d AuxiliaryEffectSlot%s\n", context, context->EffectSlotMap.size,
2317              (context->EffectSlotMap.size==1)?"":"s");
2318         ReleaseALAuxiliaryEffectSlots(context);
2319     }
2320     ResetUIntMap(&context->EffectSlotMap);
2321
2322     al_free(context->Voices);
2323     context->Voices = NULL;
2324     context->VoiceCount = 0;
2325     context->MaxVoices = 0;
2326
2327     VECTOR_DEINIT(context->ActiveAuxSlots);
2328
2329     if((lprops=ATOMIC_LOAD(&listener->Update, almemory_order_acquire)) != NULL)
2330     {
2331         TRACE("Freed unapplied listener update %p\n", lprops);
2332         al_free(lprops);
2333     }
2334     count = 0;
2335     lprops = ATOMIC_LOAD(&listener->FreeList, almemory_order_consume);
2336     while(lprops)
2337     {
2338         struct ALlistenerProps *next = ATOMIC_LOAD(&lprops->next, almemory_order_consume);
2339         al_free(lprops);
2340         lprops = next;
2341         ++count;
2342     }
2343     TRACE("Freed "SZFMT" listener property object%s\n", count, (count==1)?"":"s");
2344
2345     ALCdevice_DecRef(context->Device);
2346     context->Device = NULL;
2347
2348     //Invalidate context
2349     memset(context, 0, sizeof(ALCcontext));
2350     al_free(context);
2351 }
2352
2353 /* ReleaseContext
2354  *
2355  * Removes the context reference from the given device and removes it from
2356  * being current on the running thread or globally.
2357  */
2358 static void ReleaseContext(ALCcontext *context, ALCdevice *device)
2359 {
2360     ALCcontext *nextctx;
2361     ALCcontext *origctx;
2362
2363     if(altss_get(LocalContext) == context)
2364     {
2365         WARN("%p released while current on thread\n", context);
2366         altss_set(LocalContext, NULL);
2367         ALCcontext_DecRef(context);
2368     }
2369
2370     origctx = context;
2371     if(ATOMIC_COMPARE_EXCHANGE_STRONG(ALCcontext*, &GlobalContext, &origctx, NULL))
2372         ALCcontext_DecRef(context);
2373
2374     ALCdevice_Lock(device);
2375     origctx = context;
2376     nextctx = context->next;
2377     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCcontext*, &device->ContextList, &origctx, nextctx))
2378     {
2379         ALCcontext *list;
2380         do {
2381             list = origctx;
2382             origctx = context;
2383         } while(!COMPARE_EXCHANGE(&list->next, &origctx, nextctx));
2384     }
2385     ALCdevice_Unlock(device);
2386
2387     ALCcontext_DecRef(context);
2388 }
2389
2390 void ALCcontext_IncRef(ALCcontext *context)
2391 {
2392     uint ref;
2393     ref = IncrementRef(&context->ref);
2394     TRACEREF("%p increasing refcount to %u\n", context, ref);
2395 }
2396
2397 void ALCcontext_DecRef(ALCcontext *context)
2398 {
2399     uint ref;
2400     ref = DecrementRef(&context->ref);
2401     TRACEREF("%p decreasing refcount to %u\n", context, ref);
2402     if(ref == 0) FreeContext(context);
2403 }
2404
2405 static void ReleaseThreadCtx(void *ptr)
2406 {
2407     WARN("%p current for thread being destroyed\n", ptr);
2408     ALCcontext_DecRef(ptr);
2409 }
2410
2411 /* VerifyContext
2412  *
2413  * Checks that the given context is valid, and increments its reference count.
2414  */
2415 static ALCboolean VerifyContext(ALCcontext **context)
2416 {
2417     ALCdevice *dev;
2418
2419     LockLists();
2420     dev = ATOMIC_LOAD(&DeviceList);
2421     while(dev)
2422     {
2423         ALCcontext *ctx = ATOMIC_LOAD(&dev->ContextList);
2424         while(ctx)
2425         {
2426             if(ctx == *context)
2427             {
2428                 ALCcontext_IncRef(ctx);
2429                 UnlockLists();
2430                 return ALC_TRUE;
2431             }
2432             ctx = ctx->next;
2433         }
2434         dev = dev->next;
2435     }
2436     UnlockLists();
2437
2438     *context = NULL;
2439     return ALC_FALSE;
2440 }
2441
2442
2443 /* GetContextRef
2444  *
2445  * Returns the currently active context for this thread, and adds a reference
2446  * without locking it.
2447  */
2448 ALCcontext *GetContextRef(void)
2449 {
2450     ALCcontext *context;
2451
2452     context = altss_get(LocalContext);
2453     if(context)
2454         ALCcontext_IncRef(context);
2455     else
2456     {
2457         LockLists();
2458         context = ATOMIC_LOAD(&GlobalContext);
2459         if(context)
2460             ALCcontext_IncRef(context);
2461         UnlockLists();
2462     }
2463
2464     return context;
2465 }
2466
2467
2468 /************************************************
2469  * Standard ALC functions
2470  ************************************************/
2471
2472 /* alcGetError
2473  *
2474  * Return last ALC generated error code for the given device
2475 */
2476 ALC_API ALCenum ALC_APIENTRY alcGetError(ALCdevice *device)
2477 {
2478     ALCenum errorCode;
2479
2480     if(VerifyDevice(&device))
2481     {
2482         errorCode = ATOMIC_EXCHANGE(ALCenum, &device->LastError, ALC_NO_ERROR);
2483         ALCdevice_DecRef(device);
2484     }
2485     else
2486         errorCode = ATOMIC_EXCHANGE(ALCenum, &LastNullDeviceError, ALC_NO_ERROR);
2487
2488     return errorCode;
2489 }
2490
2491
2492 /* alcSuspendContext
2493  *
2494  * Suspends updates for the given context
2495  */
2496 ALC_API ALCvoid ALC_APIENTRY alcSuspendContext(ALCcontext *context)
2497 {
2498     if(!SuspendDefers)
2499         return;
2500
2501     if(!VerifyContext(&context))
2502         alcSetError(NULL, ALC_INVALID_CONTEXT);
2503     else
2504     {
2505         ALCcontext_DeferUpdates(context);
2506         ALCcontext_DecRef(context);
2507     }
2508 }
2509
2510 /* alcProcessContext
2511  *
2512  * Resumes processing updates for the given context
2513  */
2514 ALC_API ALCvoid ALC_APIENTRY alcProcessContext(ALCcontext *context)
2515 {
2516     if(!SuspendDefers)
2517         return;
2518
2519     if(!VerifyContext(&context))
2520         alcSetError(NULL, ALC_INVALID_CONTEXT);
2521     else
2522     {
2523         ALCcontext_ProcessUpdates(context);
2524         ALCcontext_DecRef(context);
2525     }
2526 }
2527
2528
2529 /* alcGetString
2530  *
2531  * Returns information about the device, and error strings
2532  */
2533 ALC_API const ALCchar* ALC_APIENTRY alcGetString(ALCdevice *Device, ALCenum param)
2534 {
2535     const ALCchar *value = NULL;
2536
2537     switch(param)
2538     {
2539     case ALC_NO_ERROR:
2540         value = alcNoError;
2541         break;
2542
2543     case ALC_INVALID_ENUM:
2544         value = alcErrInvalidEnum;
2545         break;
2546
2547     case ALC_INVALID_VALUE:
2548         value = alcErrInvalidValue;
2549         break;
2550
2551     case ALC_INVALID_DEVICE:
2552         value = alcErrInvalidDevice;
2553         break;
2554
2555     case ALC_INVALID_CONTEXT:
2556         value = alcErrInvalidContext;
2557         break;
2558
2559     case ALC_OUT_OF_MEMORY:
2560         value = alcErrOutOfMemory;
2561         break;
2562
2563     case ALC_DEVICE_SPECIFIER:
2564         value = alcDefaultName;
2565         break;
2566
2567     case ALC_ALL_DEVICES_SPECIFIER:
2568         if(VerifyDevice(&Device))
2569         {
2570             value = al_string_get_cstr(Device->DeviceName);
2571             ALCdevice_DecRef(Device);
2572         }
2573         else
2574         {
2575             ProbeAllDevicesList();
2576             value = al_string_get_cstr(alcAllDevicesList);
2577         }
2578         break;
2579
2580     case ALC_CAPTURE_DEVICE_SPECIFIER:
2581         if(VerifyDevice(&Device))
2582         {
2583             value = al_string_get_cstr(Device->DeviceName);
2584             ALCdevice_DecRef(Device);
2585         }
2586         else
2587         {
2588             ProbeCaptureDeviceList();
2589             value = al_string_get_cstr(alcCaptureDeviceList);
2590         }
2591         break;
2592
2593     /* Default devices are always first in the list */
2594     case ALC_DEFAULT_DEVICE_SPECIFIER:
2595         value = alcDefaultName;
2596         break;
2597
2598     case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
2599         if(al_string_empty(alcAllDevicesList))
2600             ProbeAllDevicesList();
2601
2602         VerifyDevice(&Device);
2603
2604         free(alcDefaultAllDevicesSpecifier);
2605         alcDefaultAllDevicesSpecifier = strdup(al_string_get_cstr(alcAllDevicesList));
2606         if(!alcDefaultAllDevicesSpecifier)
2607             alcSetError(Device, ALC_OUT_OF_MEMORY);
2608
2609         value = alcDefaultAllDevicesSpecifier;
2610         if(Device) ALCdevice_DecRef(Device);
2611         break;
2612
2613     case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
2614         if(al_string_empty(alcCaptureDeviceList))
2615             ProbeCaptureDeviceList();
2616
2617         VerifyDevice(&Device);
2618
2619         free(alcCaptureDefaultDeviceSpecifier);
2620         alcCaptureDefaultDeviceSpecifier = strdup(al_string_get_cstr(alcCaptureDeviceList));
2621         if(!alcCaptureDefaultDeviceSpecifier)
2622             alcSetError(Device, ALC_OUT_OF_MEMORY);
2623
2624         value = alcCaptureDefaultDeviceSpecifier;
2625         if(Device) ALCdevice_DecRef(Device);
2626         break;
2627
2628     case ALC_EXTENSIONS:
2629         if(!VerifyDevice(&Device))
2630             value = alcNoDeviceExtList;
2631         else
2632         {
2633             value = alcExtensionList;
2634             ALCdevice_DecRef(Device);
2635         }
2636         break;
2637
2638     case ALC_HRTF_SPECIFIER_SOFT:
2639         if(!VerifyDevice(&Device))
2640             alcSetError(NULL, ALC_INVALID_DEVICE);
2641         else
2642         {
2643             almtx_lock(&Device->BackendLock);
2644             value = (Device->Hrtf ? al_string_get_cstr(Device->Hrtf_Name) : "");
2645             almtx_unlock(&Device->BackendLock);
2646             ALCdevice_DecRef(Device);
2647         }
2648         break;
2649
2650     default:
2651         VerifyDevice(&Device);
2652         alcSetError(Device, ALC_INVALID_ENUM);
2653         if(Device) ALCdevice_DecRef(Device);
2654         break;
2655     }
2656
2657     return value;
2658 }
2659
2660
2661 static ALCsizei GetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
2662 {
2663     ALCsizei i;
2664
2665     if(size <= 0 || values == NULL)
2666     {
2667         alcSetError(device, ALC_INVALID_VALUE);
2668         return 0;
2669     }
2670
2671     if(!device)
2672     {
2673         switch(param)
2674         {
2675             case ALC_MAJOR_VERSION:
2676                 values[0] = alcMajorVersion;
2677                 return 1;
2678             case ALC_MINOR_VERSION:
2679                 values[0] = alcMinorVersion;
2680                 return 1;
2681
2682             case ALC_ATTRIBUTES_SIZE:
2683             case ALC_ALL_ATTRIBUTES:
2684             case ALC_FREQUENCY:
2685             case ALC_REFRESH:
2686             case ALC_SYNC:
2687             case ALC_MONO_SOURCES:
2688             case ALC_STEREO_SOURCES:
2689             case ALC_CAPTURE_SAMPLES:
2690             case ALC_FORMAT_CHANNELS_SOFT:
2691             case ALC_FORMAT_TYPE_SOFT:
2692                 alcSetError(NULL, ALC_INVALID_DEVICE);
2693                 return 0;
2694
2695             default:
2696                 alcSetError(NULL, ALC_INVALID_ENUM);
2697                 return 0;
2698         }
2699         return 0;
2700     }
2701
2702     if(device->Type == Capture)
2703     {
2704         switch(param)
2705         {
2706             case ALC_CAPTURE_SAMPLES:
2707                 almtx_lock(&device->BackendLock);
2708                 values[0] = V0(device->Backend,availableSamples)();
2709                 almtx_unlock(&device->BackendLock);
2710                 return 1;
2711
2712             case ALC_CONNECTED:
2713                 values[0] = device->Connected;
2714                 return 1;
2715
2716             default:
2717                 alcSetError(device, ALC_INVALID_ENUM);
2718                 return 0;
2719         }
2720         return 0;
2721     }
2722
2723     /* render device */
2724     switch(param)
2725     {
2726         case ALC_MAJOR_VERSION:
2727             values[0] = alcMajorVersion;
2728             return 1;
2729
2730         case ALC_MINOR_VERSION:
2731             values[0] = alcMinorVersion;
2732             return 1;
2733
2734         case ALC_EFX_MAJOR_VERSION:
2735             values[0] = alcEFXMajorVersion;
2736             return 1;
2737
2738         case ALC_EFX_MINOR_VERSION:
2739             values[0] = alcEFXMinorVersion;
2740             return 1;
2741
2742         case ALC_ATTRIBUTES_SIZE:
2743             values[0] = 17;
2744             return 1;
2745
2746         case ALC_ALL_ATTRIBUTES:
2747             if(size < 17)
2748             {
2749                 alcSetError(device, ALC_INVALID_VALUE);
2750                 return 0;
2751             }
2752
2753             i = 0;
2754             almtx_lock(&device->BackendLock);
2755             values[i++] = ALC_FREQUENCY;
2756             values[i++] = device->Frequency;
2757
2758             if(device->Type != Loopback)
2759             {
2760                 values[i++] = ALC_REFRESH;
2761                 values[i++] = device->Frequency / device->UpdateSize;
2762
2763                 values[i++] = ALC_SYNC;
2764                 values[i++] = ALC_FALSE;
2765             }
2766             else
2767             {
2768                 values[i++] = ALC_FORMAT_CHANNELS_SOFT;
2769                 values[i++] = device->FmtChans;
2770
2771                 values[i++] = ALC_FORMAT_TYPE_SOFT;
2772                 values[i++] = device->FmtType;
2773             }
2774
2775             values[i++] = ALC_MONO_SOURCES;
2776             values[i++] = device->NumMonoSources;
2777
2778             values[i++] = ALC_STEREO_SOURCES;
2779             values[i++] = device->NumStereoSources;
2780
2781             values[i++] = ALC_MAX_AUXILIARY_SENDS;
2782             values[i++] = device->NumAuxSends;
2783
2784             values[i++] = ALC_HRTF_SOFT;
2785             values[i++] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2786
2787             values[i++] = ALC_HRTF_STATUS_SOFT;
2788             values[i++] = device->Hrtf_Status;
2789             almtx_unlock(&device->BackendLock);
2790
2791             values[i++] = 0;
2792             return i;
2793
2794         case ALC_FREQUENCY:
2795             values[0] = device->Frequency;
2796             return 1;
2797
2798         case ALC_REFRESH:
2799             if(device->Type == Loopback)
2800             {
2801                 alcSetError(device, ALC_INVALID_DEVICE);
2802                 return 0;
2803             }
2804             almtx_lock(&device->BackendLock);
2805             values[0] = device->Frequency / device->UpdateSize;
2806             almtx_unlock(&device->BackendLock);
2807             return 1;
2808
2809         case ALC_SYNC:
2810             if(device->Type == Loopback)
2811             {
2812                 alcSetError(device, ALC_INVALID_DEVICE);
2813                 return 0;
2814             }
2815             values[0] = ALC_FALSE;
2816             return 1;
2817
2818         case ALC_FORMAT_CHANNELS_SOFT:
2819             if(device->Type != Loopback)
2820             {
2821                 alcSetError(device, ALC_INVALID_DEVICE);
2822                 return 0;
2823             }
2824             values[0] = device->FmtChans;
2825             return 1;
2826
2827         case ALC_FORMAT_TYPE_SOFT:
2828             if(device->Type != Loopback)
2829             {
2830                 alcSetError(device, ALC_INVALID_DEVICE);
2831                 return 0;
2832             }
2833             values[0] = device->FmtType;
2834             return 1;
2835
2836         case ALC_MONO_SOURCES:
2837             values[0] = device->NumMonoSources;
2838             return 1;
2839
2840         case ALC_STEREO_SOURCES:
2841             values[0] = device->NumStereoSources;
2842             return 1;
2843
2844         case ALC_MAX_AUXILIARY_SENDS:
2845             values[0] = device->NumAuxSends;
2846             return 1;
2847
2848         case ALC_CONNECTED:
2849             values[0] = device->Connected;
2850             return 1;
2851
2852         case ALC_HRTF_SOFT:
2853             values[0] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2854             return 1;
2855
2856         case ALC_HRTF_STATUS_SOFT:
2857             values[0] = device->Hrtf_Status;
2858             return 1;
2859
2860         case ALC_NUM_HRTF_SPECIFIERS_SOFT:
2861             almtx_lock(&device->BackendLock);
2862             FreeHrtfList(&device->Hrtf_List);
2863             device->Hrtf_List = EnumerateHrtf(device->DeviceName);
2864             values[0] = (ALCint)VECTOR_SIZE(device->Hrtf_List);
2865             almtx_unlock(&device->BackendLock);
2866             return 1;
2867
2868         default:
2869             alcSetError(device, ALC_INVALID_ENUM);
2870             return 0;
2871     }
2872     return 0;
2873 }
2874
2875 /* alcGetIntegerv
2876  *
2877  * Returns information about the device and the version of OpenAL
2878  */
2879 ALC_API void ALC_APIENTRY alcGetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
2880 {
2881     VerifyDevice(&device);
2882     if(size <= 0 || values == NULL)
2883         alcSetError(device, ALC_INVALID_VALUE);
2884     else
2885         GetIntegerv(device, param, size, values);
2886     if(device) ALCdevice_DecRef(device);
2887 }
2888
2889 ALC_API void ALC_APIENTRY alcGetInteger64vSOFT(ALCdevice *device, ALCenum pname, ALCsizei size, ALCint64SOFT *values)
2890 {
2891     ALCint *ivals;
2892     ALsizei i;
2893
2894     VerifyDevice(&device);
2895     if(size <= 0 || values == NULL)
2896         alcSetError(device, ALC_INVALID_VALUE);
2897     else if(!device || device->Type == Capture)
2898     {
2899         ivals = malloc(size * sizeof(ALCint));
2900         size = GetIntegerv(device, pname, size, ivals);
2901         for(i = 0;i < size;i++)
2902             values[i] = ivals[i];
2903         free(ivals);
2904     }
2905     else /* render device */
2906     {
2907         ALuint64 basecount;
2908         ALuint samplecount;
2909         ALuint refcount;
2910
2911         switch(pname)
2912         {
2913             case ALC_ATTRIBUTES_SIZE:
2914                 *values = 19;
2915                 break;
2916
2917             case ALC_ALL_ATTRIBUTES:
2918                 if(size < 19)
2919                     alcSetError(device, ALC_INVALID_VALUE);
2920                 else
2921                 {
2922                     int i = 0;
2923
2924                     almtx_lock(&device->BackendLock);
2925                     values[i++] = ALC_FREQUENCY;
2926                     values[i++] = device->Frequency;
2927
2928                     if(device->Type != Loopback)
2929                     {
2930                         values[i++] = ALC_REFRESH;
2931                         values[i++] = device->Frequency / device->UpdateSize;
2932
2933                         values[i++] = ALC_SYNC;
2934                         values[i++] = ALC_FALSE;
2935                     }
2936                     else
2937                     {
2938                         values[i++] = ALC_FORMAT_CHANNELS_SOFT;
2939                         values[i++] = device->FmtChans;
2940
2941                         values[i++] = ALC_FORMAT_TYPE_SOFT;
2942                         values[i++] = device->FmtType;
2943                     }
2944
2945                     values[i++] = ALC_MONO_SOURCES;
2946                     values[i++] = device->NumMonoSources;
2947
2948                     values[i++] = ALC_STEREO_SOURCES;
2949                     values[i++] = device->NumStereoSources;
2950
2951                     values[i++] = ALC_MAX_AUXILIARY_SENDS;
2952                     values[i++] = device->NumAuxSends;
2953
2954                     values[i++] = ALC_HRTF_SOFT;
2955                     values[i++] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2956
2957                     values[i++] = ALC_HRTF_STATUS_SOFT;
2958                     values[i++] = device->Hrtf_Status;
2959
2960                     values[i++] = ALC_DEVICE_CLOCK_SOFT;
2961                     do {
2962                         while(((refcount=ReadRef(&device->MixCount))&1) != 0)
2963                             althrd_yield();
2964                         basecount = device->ClockBase;
2965                         samplecount = device->SamplesDone;
2966                     } while(refcount != ReadRef(&device->MixCount));
2967                     values[i++] = basecount + (samplecount*DEVICE_CLOCK_RES/device->Frequency);
2968                     almtx_unlock(&device->BackendLock);
2969
2970                     values[i++] = 0;
2971                 }
2972                 break;
2973
2974             case ALC_DEVICE_CLOCK_SOFT:
2975                 almtx_lock(&device->BackendLock);
2976                 do {
2977                     while(((refcount=ReadRef(&device->MixCount))&1) != 0)
2978                         althrd_yield();
2979                     basecount = device->ClockBase;
2980                     samplecount = device->SamplesDone;
2981                 } while(refcount != ReadRef(&device->MixCount));
2982                 *values = basecount + (samplecount*DEVICE_CLOCK_RES/device->Frequency);
2983                 almtx_unlock(&device->BackendLock);
2984                 break;
2985
2986             default:
2987                 ivals = malloc(size * sizeof(ALCint));
2988                 size = GetIntegerv(device, pname, size, ivals);
2989                 for(i = 0;i < size;i++)
2990                     values[i] = ivals[i];
2991                 free(ivals);
2992                 break;
2993         }
2994     }
2995     if(device)
2996         ALCdevice_DecRef(device);
2997 }
2998
2999
3000 /* alcIsExtensionPresent
3001  *
3002  * Determines if there is support for a particular extension
3003  */
3004 ALC_API ALCboolean ALC_APIENTRY alcIsExtensionPresent(ALCdevice *device, const ALCchar *extName)
3005 {
3006     ALCboolean bResult = ALC_FALSE;
3007
3008     VerifyDevice(&device);
3009
3010     if(!extName)
3011         alcSetError(device, ALC_INVALID_VALUE);
3012     else
3013     {
3014         size_t len = strlen(extName);
3015         const char *ptr = (device ? alcExtensionList : alcNoDeviceExtList);
3016         while(ptr && *ptr)
3017         {
3018             if(strncasecmp(ptr, extName, len) == 0 &&
3019                (ptr[len] == '\0' || isspace(ptr[len])))
3020             {
3021                 bResult = ALC_TRUE;
3022                 break;
3023             }
3024             if((ptr=strchr(ptr, ' ')) != NULL)
3025             {
3026                 do {
3027                     ++ptr;
3028                 } while(isspace(*ptr));
3029             }
3030         }
3031     }
3032     if(device)
3033         ALCdevice_DecRef(device);
3034     return bResult;
3035 }
3036
3037
3038 /* alcGetProcAddress
3039  *
3040  * Retrieves the function address for a particular extension function
3041  */
3042 ALC_API ALCvoid* ALC_APIENTRY alcGetProcAddress(ALCdevice *device, const ALCchar *funcName)
3043 {
3044     ALCvoid *ptr = NULL;
3045
3046     if(!funcName)
3047     {
3048         VerifyDevice(&device);
3049         alcSetError(device, ALC_INVALID_VALUE);
3050         if(device) ALCdevice_DecRef(device);
3051     }
3052     else
3053     {
3054         ALsizei i = 0;
3055         while(alcFunctions[i].funcName && strcmp(alcFunctions[i].funcName, funcName) != 0)
3056             i++;
3057         ptr = alcFunctions[i].address;
3058     }
3059
3060     return ptr;
3061 }
3062
3063
3064 /* alcGetEnumValue
3065  *
3066  * Get the value for a particular ALC enumeration name
3067  */
3068 ALC_API ALCenum ALC_APIENTRY alcGetEnumValue(ALCdevice *device, const ALCchar *enumName)
3069 {
3070     ALCenum val = 0;
3071
3072     if(!enumName)
3073     {
3074         VerifyDevice(&device);
3075         alcSetError(device, ALC_INVALID_VALUE);
3076         if(device) ALCdevice_DecRef(device);
3077     }
3078     else
3079     {
3080         ALsizei i = 0;
3081         while(enumeration[i].enumName && strcmp(enumeration[i].enumName, enumName) != 0)
3082             i++;
3083         val = enumeration[i].value;
3084     }
3085
3086     return val;
3087 }
3088
3089
3090 /* alcCreateContext
3091  *
3092  * Create and attach a context to the given device.
3093  */
3094 ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCint *attrList)
3095 {
3096     ALCcontext *ALContext;
3097     ALCenum err;
3098
3099     LockLists();
3100     if(!VerifyDevice(&device) || device->Type == Capture || !device->Connected)
3101     {
3102         UnlockLists();
3103         alcSetError(device, ALC_INVALID_DEVICE);
3104         if(device) ALCdevice_DecRef(device);
3105         return NULL;
3106     }
3107     almtx_lock(&device->BackendLock);
3108     UnlockLists();
3109
3110     ATOMIC_STORE(&device->LastError, ALC_NO_ERROR);
3111
3112     ALContext = al_calloc(16, sizeof(ALCcontext)+sizeof(ALlistener));
3113     if(ALContext)
3114     {
3115         InitRef(&ALContext->ref, 1);
3116         ALContext->Listener = (ALlistener*)ALContext->_listener_mem;
3117
3118         VECTOR_INIT(ALContext->ActiveAuxSlots);
3119
3120         ALContext->VoiceCount = 0;
3121         ALContext->MaxVoices = 256;
3122         ALContext->Voices = al_calloc(16, ALContext->MaxVoices * sizeof(ALContext->Voices[0]));
3123     }
3124     if(!ALContext || !ALContext->Voices)
3125     {
3126         almtx_unlock(&device->BackendLock);
3127
3128         if(ALContext)
3129         {
3130             al_free(ALContext->Voices);
3131             ALContext->Voices = NULL;
3132
3133             VECTOR_DEINIT(ALContext->ActiveAuxSlots);
3134
3135             al_free(ALContext);
3136             ALContext = NULL;
3137         }
3138
3139         alcSetError(device, ALC_OUT_OF_MEMORY);
3140         ALCdevice_DecRef(device);
3141         return NULL;
3142     }
3143
3144     if((err=UpdateDeviceParams(device, attrList)) != ALC_NO_ERROR)
3145     {
3146         almtx_unlock(&device->BackendLock);
3147
3148         al_free(ALContext->Voices);
3149         ALContext->Voices = NULL;
3150
3151         VECTOR_DEINIT(ALContext->ActiveAuxSlots);
3152
3153         al_free(ALContext);
3154         ALContext = NULL;
3155
3156         alcSetError(device, err);
3157         if(err == ALC_INVALID_DEVICE)
3158         {
3159             V0(device->Backend,lock)();
3160             aluHandleDisconnect(device);
3161             V0(device->Backend,unlock)();
3162         }
3163         ALCdevice_DecRef(device);
3164         return NULL;
3165     }
3166
3167     ALContext->Device = device;
3168     ALCdevice_IncRef(device);
3169     InitContext(ALContext);
3170
3171     {
3172         ALCcontext *head = ATOMIC_LOAD(&device->ContextList);
3173         do {
3174             ALContext->next = head;
3175         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCcontext*, &device->ContextList, &head, ALContext));
3176     }
3177     almtx_unlock(&device->BackendLock);
3178
3179     ALCdevice_DecRef(device);
3180
3181     TRACE("Created context %p\n", ALContext);
3182     return ALContext;
3183 }
3184
3185 /* alcDestroyContext
3186  *
3187  * Remove a context from its device
3188  */
3189 ALC_API ALCvoid ALC_APIENTRY alcDestroyContext(ALCcontext *context)
3190 {
3191     ALCdevice *Device;
3192
3193     LockLists();
3194     /* alcGetContextsDevice sets an error for invalid contexts */
3195     Device = alcGetContextsDevice(context);
3196     if(Device)
3197     {
3198         almtx_lock(&Device->BackendLock);
3199         ReleaseContext(context, Device);
3200         if(!ATOMIC_LOAD(&Device->ContextList))
3201         {
3202             V0(Device->Backend,stop)();
3203             Device->Flags &= ~DEVICE_RUNNING;
3204         }
3205         almtx_unlock(&Device->BackendLock);
3206     }
3207     UnlockLists();
3208 }
3209
3210
3211 /* alcGetCurrentContext
3212  *
3213  * Returns the currently active context on the calling thread
3214  */
3215 ALC_API ALCcontext* ALC_APIENTRY alcGetCurrentContext(void)
3216 {
3217     ALCcontext *Context = altss_get(LocalContext);
3218     if(!Context) Context = ATOMIC_LOAD(&GlobalContext);
3219     return Context;
3220 }
3221
3222 /* alcGetThreadContext
3223  *
3224  * Returns the currently active thread-local context
3225  */
3226 ALC_API ALCcontext* ALC_APIENTRY alcGetThreadContext(void)
3227 {
3228     return altss_get(LocalContext);
3229 }
3230
3231
3232 /* alcMakeContextCurrent
3233  *
3234  * Makes the given context the active process-wide context, and removes the
3235  * thread-local context for the calling thread.
3236  */
3237 ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context)
3238 {
3239     /* context must be valid or NULL */
3240     if(context && !VerifyContext(&context))
3241     {
3242         alcSetError(NULL, ALC_INVALID_CONTEXT);
3243         return ALC_FALSE;
3244     }
3245     /* context's reference count is already incremented */
3246     context = ATOMIC_EXCHANGE(ALCcontext*, &GlobalContext, context);
3247     if(context) ALCcontext_DecRef(context);
3248
3249     if((context=altss_get(LocalContext)) != NULL)
3250     {
3251         altss_set(LocalContext, NULL);
3252         ALCcontext_DecRef(context);
3253     }
3254
3255     return ALC_TRUE;
3256 }
3257
3258 /* alcSetThreadContext
3259  *
3260  * Makes the given context the active context for the current thread
3261  */
3262 ALC_API ALCboolean ALC_APIENTRY alcSetThreadContext(ALCcontext *context)
3263 {
3264     ALCcontext *old;
3265
3266     /* context must be valid or NULL */
3267     if(context && !VerifyContext(&context))
3268     {
3269         alcSetError(NULL, ALC_INVALID_CONTEXT);
3270         return ALC_FALSE;
3271     }
3272     /* context's reference count is already incremented */
3273     old = altss_get(LocalContext);
3274     altss_set(LocalContext, context);
3275     if(old) ALCcontext_DecRef(old);
3276
3277     return ALC_TRUE;
3278 }
3279
3280
3281 /* alcGetContextsDevice
3282  *
3283  * Returns the device that a particular context is attached to
3284  */
3285 ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice(ALCcontext *Context)
3286 {
3287     ALCdevice *Device;
3288
3289     if(!VerifyContext(&Context))
3290     {
3291         alcSetError(NULL, ALC_INVALID_CONTEXT);
3292         return NULL;
3293     }
3294     Device = Context->Device;
3295     ALCcontext_DecRef(Context);
3296
3297     return Device;
3298 }
3299
3300
3301 /* alcOpenDevice
3302  *
3303  * Opens the named device.
3304  */
3305 ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
3306 {
3307     const ALCchar *fmt;
3308     ALCdevice *device;
3309     ALCenum err;
3310
3311     DO_INITCONFIG();
3312
3313     if(!PlaybackBackend.name)
3314     {
3315         alcSetError(NULL, ALC_INVALID_VALUE);
3316         return NULL;
3317     }
3318
3319     if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0
3320 #ifdef _WIN32
3321         /* Some old Windows apps hardcode these expecting OpenAL to use a
3322          * specific audio API, even when they're not enumerated. Creative's
3323          * router effectively ignores them too.
3324          */
3325         || strcasecmp(deviceName, "DirectSound3D") == 0 || strcasecmp(deviceName, "DirectSound") == 0
3326         || strcasecmp(deviceName, "MMSYSTEM") == 0
3327 #endif
3328     ))
3329         deviceName = NULL;
3330
3331     device = al_calloc(16, sizeof(ALCdevice)+sizeof(ALeffectslot));
3332     if(!device)
3333     {
3334         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3335         return NULL;
3336     }
3337
3338     //Validate device
3339     InitRef(&device->ref, 1);
3340     device->Connected = ALC_TRUE;
3341     device->Type = Playback;
3342     ATOMIC_INIT(&device->LastError, ALC_NO_ERROR);
3343
3344     device->Flags = 0;
3345     device->Bs2b = NULL;
3346     device->Uhj_Encoder = NULL;
3347     VECTOR_INIT(device->Hrtf_List);
3348     AL_STRING_INIT(device->Hrtf_Name);
3349     device->Render_Mode = NormalRender;
3350     AL_STRING_INIT(device->DeviceName);
3351     device->Dry.Buffer = NULL;
3352     device->Dry.NumChannels = 0;
3353     device->VirtOut.Buffer = NULL;
3354     device->VirtOut.NumChannels = 0;
3355     device->RealOut.Buffer = NULL;
3356     device->RealOut.NumChannels = 0;
3357
3358     ATOMIC_INIT(&device->ContextList, NULL);
3359
3360     device->ClockBase = 0;
3361     device->SamplesDone = 0;
3362
3363     device->MaxNoOfSources = 256;
3364     device->AuxiliaryEffectSlotMax = 4;
3365     device->NumAuxSends = MAX_SENDS;
3366
3367     InitUIntMap(&device->BufferMap, ~0);
3368     InitUIntMap(&device->EffectMap, ~0);
3369     InitUIntMap(&device->FilterMap, ~0);
3370
3371     //Set output format
3372     device->FmtChans = DevFmtChannelsDefault;
3373     device->FmtType = DevFmtTypeDefault;
3374     device->Frequency = DEFAULT_OUTPUT_RATE;
3375     device->IsHeadphones = AL_FALSE;
3376     device->NumUpdates = 4;
3377     device->UpdateSize = 1024;
3378
3379     if(!PlaybackBackend.getFactory)
3380         device->Backend = create_backend_wrapper(device, &PlaybackBackend.Funcs,
3381                                                  ALCbackend_Playback);
3382     else
3383     {
3384         ALCbackendFactory *factory = PlaybackBackend.getFactory();
3385         device->Backend = V(factory,createBackend)(device, ALCbackend_Playback);
3386     }
3387     if(!device->Backend)
3388     {
3389         al_free(device);
3390         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3391         return NULL;
3392     }
3393
3394
3395     if(ConfigValueStr(deviceName, NULL, "channels", &fmt))
3396     {
3397         static const struct {
3398             const char name[16];
3399             enum DevFmtChannels chans;
3400         } chanlist[] = {
3401             { "mono",       DevFmtMono   },
3402             { "stereo",     DevFmtStereo },
3403             { "quad",       DevFmtQuad   },
3404             { "surround51", DevFmtX51    },
3405             { "surround61", DevFmtX61    },
3406             { "surround71", DevFmtX71    },
3407             { "surround51rear", DevFmtX51Rear },
3408         };
3409         size_t i;
3410
3411         for(i = 0;i < COUNTOF(chanlist);i++)
3412         {
3413             if(strcasecmp(chanlist[i].name, fmt) == 0)
3414             {
3415                 device->FmtChans = chanlist[i].chans;
3416                 device->Flags |= DEVICE_CHANNELS_REQUEST;
3417                 break;
3418             }
3419         }
3420         if(i == COUNTOF(chanlist))
3421             ERR("Unsupported channels: %s\n", fmt);
3422     }
3423     if(ConfigValueStr(deviceName, NULL, "sample-type", &fmt))
3424     {
3425         static const struct {
3426             const char name[16];
3427             enum DevFmtType type;
3428         } typelist[] = {
3429             { "int8",    DevFmtByte   },
3430             { "uint8",   DevFmtUByte  },
3431             { "int16",   DevFmtShort  },
3432             { "uint16",  DevFmtUShort },
3433             { "int32",   DevFmtInt    },
3434             { "uint32",  DevFmtUInt   },
3435             { "float32", DevFmtFloat  },
3436         };
3437         size_t i;
3438
3439         for(i = 0;i < COUNTOF(typelist);i++)
3440         {
3441             if(strcasecmp(typelist[i].name, fmt) == 0)
3442             {
3443                 device->FmtType = typelist[i].type;
3444                 device->Flags |= DEVICE_SAMPLE_TYPE_REQUEST;
3445                 break;
3446             }
3447         }
3448         if(i == COUNTOF(typelist))
3449             ERR("Unsupported sample-type: %s\n", fmt);
3450     }
3451
3452     if(ConfigValueUInt(deviceName, NULL, "frequency", &device->Frequency))
3453     {
3454         device->Flags |= DEVICE_FREQUENCY_REQUEST;
3455         if(device->Frequency < MIN_OUTPUT_RATE)
3456             ERR("%uhz request clamped to %uhz minimum\n", device->Frequency, MIN_OUTPUT_RATE);
3457         device->Frequency = maxu(device->Frequency, MIN_OUTPUT_RATE);
3458     }
3459
3460     ConfigValueUInt(deviceName, NULL, "periods", &device->NumUpdates);
3461     device->NumUpdates = clampu(device->NumUpdates, 2, 16);
3462
3463     ConfigValueUInt(deviceName, NULL, "period_size", &device->UpdateSize);
3464     device->UpdateSize = clampu(device->UpdateSize, 64, 8192);
3465     if((CPUCapFlags&(CPU_CAP_SSE|CPU_CAP_NEON)) != 0)
3466         device->UpdateSize = (device->UpdateSize+3)&~3;
3467
3468     ConfigValueUInt(deviceName, NULL, "sources", &device->MaxNoOfSources);
3469     if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256;
3470
3471     ConfigValueUInt(deviceName, NULL, "slots", &device->AuxiliaryEffectSlotMax);
3472     if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4;
3473
3474     ConfigValueUInt(deviceName, NULL, "sends", &device->NumAuxSends);
3475     if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS;
3476
3477     device->NumStereoSources = 1;
3478     device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
3479
3480     // Find a playback device to open
3481     if((err=V(device->Backend,open)(deviceName)) != ALC_NO_ERROR)
3482     {
3483         DELETE_OBJ(device->Backend);
3484         al_free(device);
3485         alcSetError(NULL, err);
3486         return NULL;
3487     }
3488     almtx_init(&device->BackendLock, almtx_plain);
3489
3490     if(DefaultEffect.type != AL_EFFECT_NULL)
3491     {
3492         device->DefaultSlot = (ALeffectslot*)device->_slot_mem;
3493         if(InitEffectSlot(device->DefaultSlot) != AL_NO_ERROR)
3494         {
3495             device->DefaultSlot = NULL;
3496             ERR("Failed to initialize the default effect slot\n");
3497         }
3498         else
3499         {
3500             aluInitEffectPanning(device->DefaultSlot);
3501             if(InitializeEffect(device, device->DefaultSlot, &DefaultEffect) != AL_NO_ERROR)
3502             {
3503                 DeinitEffectSlot(device->DefaultSlot);
3504                 device->DefaultSlot = NULL;
3505                 ERR("Failed to initialize the default effect\n");
3506             }
3507         }
3508     }
3509
3510     {
3511         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3512         do {
3513             device->next = head;
3514         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3515     }
3516
3517     TRACE("Created device %p, \"%s\"\n", device, al_string_get_cstr(device->DeviceName));
3518     return device;
3519 }
3520
3521 /* alcCloseDevice
3522  *
3523  * Closes the given device.
3524  */
3525 ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *device)
3526 {
3527     ALCdevice *list, *origdev, *nextdev;
3528     ALCcontext *ctx;
3529
3530     LockLists();
3531     list = ATOMIC_LOAD(&DeviceList);
3532     do {
3533         if(list == device)
3534             break;
3535     } while((list=list->next) != NULL);
3536     if(!list || list->Type == Capture)
3537     {
3538         alcSetError(list, ALC_INVALID_DEVICE);
3539         UnlockLists();
3540         return ALC_FALSE;
3541     }
3542     almtx_lock(&device->BackendLock);
3543
3544     origdev = device;
3545     nextdev = device->next;
3546     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCdevice*, &DeviceList, &origdev, nextdev))
3547     {
3548         do {
3549             list = origdev;
3550             origdev = device;
3551         } while(!COMPARE_EXCHANGE(&list->next, &origdev, nextdev));
3552     }
3553     UnlockLists();
3554
3555     ctx = ATOMIC_LOAD(&device->ContextList);
3556     while(ctx != NULL)
3557     {
3558         ALCcontext *next = ctx->next;
3559         WARN("Releasing context %p\n", ctx);
3560         ReleaseContext(ctx, device);
3561         ctx = next;
3562     }
3563     if((device->Flags&DEVICE_RUNNING))
3564         V0(device->Backend,stop)();
3565     device->Flags &= ~DEVICE_RUNNING;
3566     almtx_unlock(&device->BackendLock);
3567
3568     ALCdevice_DecRef(device);
3569
3570     return ALC_TRUE;
3571 }
3572
3573
3574 /************************************************
3575  * ALC capture functions
3576  ************************************************/
3577 ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei samples)
3578 {
3579     ALCdevice *device = NULL;
3580     ALCenum err;
3581
3582     DO_INITCONFIG();
3583
3584     if(!CaptureBackend.name)
3585     {
3586         alcSetError(NULL, ALC_INVALID_VALUE);
3587         return NULL;
3588     }
3589
3590     if(samples <= 0)
3591     {
3592         alcSetError(NULL, ALC_INVALID_VALUE);
3593         return NULL;
3594     }
3595
3596     if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0))
3597         deviceName = NULL;
3598
3599     device = al_calloc(16, sizeof(ALCdevice));
3600     if(!device)
3601     {
3602         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3603         return NULL;
3604     }
3605
3606     //Validate device
3607     InitRef(&device->ref, 1);
3608     device->Connected = ALC_TRUE;
3609     device->Type = Capture;
3610
3611     VECTOR_INIT(device->Hrtf_List);
3612     AL_STRING_INIT(device->Hrtf_Name);
3613
3614     AL_STRING_INIT(device->DeviceName);
3615     device->Dry.Buffer = NULL;
3616     device->Dry.NumChannels = 0;
3617     device->VirtOut.Buffer = NULL;
3618     device->VirtOut.NumChannels = 0;
3619     device->RealOut.Buffer = NULL;
3620     device->RealOut.NumChannels = 0;
3621
3622     InitUIntMap(&device->BufferMap, ~0);
3623     InitUIntMap(&device->EffectMap, ~0);
3624     InitUIntMap(&device->FilterMap, ~0);
3625
3626     if(!CaptureBackend.getFactory)
3627         device->Backend = create_backend_wrapper(device, &CaptureBackend.Funcs,
3628                                                  ALCbackend_Capture);
3629     else
3630     {
3631         ALCbackendFactory *factory = CaptureBackend.getFactory();
3632         device->Backend = V(factory,createBackend)(device, ALCbackend_Capture);
3633     }
3634     if(!device->Backend)
3635     {
3636         al_free(device);
3637         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3638         return NULL;
3639     }
3640
3641     device->Flags |= DEVICE_FREQUENCY_REQUEST;
3642     device->Frequency = frequency;
3643
3644     device->Flags |= DEVICE_CHANNELS_REQUEST | DEVICE_SAMPLE_TYPE_REQUEST;
3645     if(DecomposeDevFormat(format, &device->FmtChans, &device->FmtType) == AL_FALSE)
3646     {
3647         al_free(device);
3648         alcSetError(NULL, ALC_INVALID_ENUM);
3649         return NULL;
3650     }
3651     device->IsHeadphones = AL_FALSE;
3652
3653     device->UpdateSize = samples;
3654     device->NumUpdates = 1;
3655
3656     if((err=V(device->Backend,open)(deviceName)) != ALC_NO_ERROR)
3657     {
3658         al_free(device);
3659         alcSetError(NULL, err);
3660         return NULL;
3661     }
3662     almtx_init(&device->BackendLock, almtx_plain);
3663
3664     {
3665         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3666         do {
3667             device->next = head;
3668         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3669     }
3670
3671     TRACE("Created device %p, \"%s\"\n", device, al_string_get_cstr(device->DeviceName));
3672     return device;
3673 }
3674
3675 ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice(ALCdevice *device)
3676 {
3677     ALCdevice *list, *next, *nextdev;
3678
3679     LockLists();
3680     list = ATOMIC_LOAD(&DeviceList);
3681     do {
3682         if(list == device)
3683             break;
3684     } while((list=list->next) != NULL);
3685     if(!list || list->Type != Capture)
3686     {
3687         alcSetError(list, ALC_INVALID_DEVICE);
3688         UnlockLists();
3689         return ALC_FALSE;
3690     }
3691
3692     next = device;
3693     nextdev = device->next;
3694     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCdevice*, &DeviceList, &next, nextdev))
3695     {
3696         do {
3697             list = next;
3698             next = device;
3699         } while(!COMPARE_EXCHANGE(&list->next, &next, nextdev));
3700     }
3701     UnlockLists();
3702
3703     ALCdevice_DecRef(device);
3704
3705     return ALC_TRUE;
3706 }
3707
3708 ALC_API void ALC_APIENTRY alcCaptureStart(ALCdevice *device)
3709 {
3710     if(!VerifyDevice(&device) || device->Type != Capture)
3711         alcSetError(device, ALC_INVALID_DEVICE);
3712     else
3713     {
3714         almtx_lock(&device->BackendLock);
3715         if(!device->Connected)
3716             alcSetError(device, ALC_INVALID_DEVICE);
3717         else if(!(device->Flags&DEVICE_RUNNING))
3718         {
3719             if(V0(device->Backend,start)())
3720                 device->Flags |= DEVICE_RUNNING;
3721             else
3722             {
3723                 aluHandleDisconnect(device);
3724                 alcSetError(device, ALC_INVALID_DEVICE);
3725             }
3726         }
3727         almtx_unlock(&device->BackendLock);
3728     }
3729
3730     if(device) ALCdevice_DecRef(device);
3731 }
3732
3733 ALC_API void ALC_APIENTRY alcCaptureStop(ALCdevice *device)
3734 {
3735     if(!VerifyDevice(&device) || device->Type != Capture)
3736         alcSetError(device, ALC_INVALID_DEVICE);
3737     else
3738     {
3739         almtx_lock(&device->BackendLock);
3740         if((device->Flags&DEVICE_RUNNING))
3741             V0(device->Backend,stop)();
3742         device->Flags &= ~DEVICE_RUNNING;
3743         almtx_unlock(&device->BackendLock);
3744     }
3745
3746     if(device) ALCdevice_DecRef(device);
3747 }
3748
3749 ALC_API void ALC_APIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
3750 {
3751     if(!VerifyDevice(&device) || device->Type != Capture)
3752         alcSetError(device, ALC_INVALID_DEVICE);
3753     else
3754     {
3755         ALCenum err = ALC_INVALID_VALUE;
3756
3757         almtx_lock(&device->BackendLock);
3758         if(samples >= 0 && V0(device->Backend,availableSamples)() >= (ALCuint)samples)
3759             err = V(device->Backend,captureSamples)(buffer, samples);
3760         almtx_unlock(&device->BackendLock);
3761
3762         if(err != ALC_NO_ERROR)
3763             alcSetError(device, err);
3764     }
3765     if(device) ALCdevice_DecRef(device);
3766 }
3767
3768
3769 /************************************************
3770  * ALC loopback functions
3771  ************************************************/
3772
3773 /* alcLoopbackOpenDeviceSOFT
3774  *
3775  * Open a loopback device, for manual rendering.
3776  */
3777 ALC_API ALCdevice* ALC_APIENTRY alcLoopbackOpenDeviceSOFT(const ALCchar *deviceName)
3778 {
3779     ALCbackendFactory *factory;
3780     ALCdevice *device;
3781
3782     DO_INITCONFIG();
3783
3784     /* Make sure the device name, if specified, is us. */
3785     if(deviceName && strcmp(deviceName, alcDefaultName) != 0)
3786     {
3787         alcSetError(NULL, ALC_INVALID_VALUE);
3788         return NULL;
3789     }
3790
3791     device = al_calloc(16, sizeof(ALCdevice));
3792     if(!device)
3793     {
3794         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3795         return NULL;
3796     }
3797
3798     //Validate device
3799     InitRef(&device->ref, 1);
3800     device->Connected = ALC_TRUE;
3801     device->Type = Loopback;
3802     ATOMIC_INIT(&device->LastError, ALC_NO_ERROR);
3803
3804     device->Flags = 0;
3805     VECTOR_INIT(device->Hrtf_List);
3806     AL_STRING_INIT(device->Hrtf_Name);
3807     device->Bs2b = NULL;
3808     device->Uhj_Encoder = NULL;
3809     device->Render_Mode = NormalRender;
3810     AL_STRING_INIT(device->DeviceName);
3811     device->Dry.Buffer = NULL;
3812     device->Dry.NumChannels = 0;
3813     device->VirtOut.Buffer = NULL;
3814     device->VirtOut.NumChannels = 0;
3815     device->RealOut.Buffer = NULL;
3816     device->RealOut.NumChannels = 0;
3817
3818     ATOMIC_INIT(&device->ContextList, NULL);
3819
3820     device->ClockBase = 0;
3821     device->SamplesDone = 0;
3822
3823     device->MaxNoOfSources = 256;
3824     device->AuxiliaryEffectSlotMax = 4;
3825     device->NumAuxSends = MAX_SENDS;
3826
3827     InitUIntMap(&device->BufferMap, ~0);
3828     InitUIntMap(&device->EffectMap, ~0);
3829     InitUIntMap(&device->FilterMap, ~0);
3830
3831     factory = ALCloopbackFactory_getFactory();
3832     device->Backend = V(factory,createBackend)(device, ALCbackend_Loopback);
3833     if(!device->Backend)
3834     {
3835         al_free(device);
3836         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3837         return NULL;
3838     }
3839     almtx_init(&device->BackendLock, almtx_plain);
3840
3841     //Set output format
3842     device->NumUpdates = 0;
3843     device->UpdateSize = 0;
3844
3845     device->Frequency = DEFAULT_OUTPUT_RATE;
3846     device->FmtChans = DevFmtChannelsDefault;
3847     device->FmtType = DevFmtTypeDefault;
3848     device->IsHeadphones = AL_FALSE;
3849
3850     ConfigValueUInt(NULL, NULL, "sources", &device->MaxNoOfSources);
3851     if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256;
3852
3853     ConfigValueUInt(NULL, NULL, "slots", &device->AuxiliaryEffectSlotMax);
3854     if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4;
3855
3856     ConfigValueUInt(NULL, NULL, "sends", &device->NumAuxSends);
3857     if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS;
3858
3859     device->NumStereoSources = 1;
3860     device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
3861
3862     // Open the "backend"
3863     V(device->Backend,open)("Loopback");
3864
3865     {
3866         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3867         do {
3868             device->next = head;
3869         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3870     }
3871
3872     TRACE("Created device %p\n", device);
3873     return device;
3874 }
3875
3876 /* alcIsRenderFormatSupportedSOFT
3877  *
3878  * Determines if the loopback device supports the given format for rendering.
3879  */
3880 ALC_API ALCboolean ALC_APIENTRY alcIsRenderFormatSupportedSOFT(ALCdevice *device, ALCsizei freq, ALCenum channels, ALCenum type)
3881 {
3882     ALCboolean ret = ALC_FALSE;
3883
3884     if(!VerifyDevice(&device) || device->Type != Loopback)
3885         alcSetError(device, ALC_INVALID_DEVICE);
3886     else if(freq <= 0)
3887         alcSetError(device, ALC_INVALID_VALUE);
3888     else
3889     {
3890         if(IsValidALCType(type) && BytesFromDevFmt(type) > 0 &&
3891            IsValidALCChannels(channels) && ChannelsFromDevFmt(channels) > 0 &&
3892            freq >= MIN_OUTPUT_RATE)
3893             ret = ALC_TRUE;
3894     }
3895     if(device) ALCdevice_DecRef(device);
3896
3897     return ret;
3898 }
3899
3900 /* alcRenderSamplesSOFT
3901  *
3902  * Renders some samples into a buffer, using the format last set by the
3903  * attributes given to alcCreateContext.
3904  */
3905 FORCE_ALIGN ALC_API void ALC_APIENTRY alcRenderSamplesSOFT(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
3906 {
3907     if(!VerifyDevice(&device) || device->Type != Loopback)
3908         alcSetError(device, ALC_INVALID_DEVICE);
3909     else if(samples < 0 || (samples > 0 && buffer == NULL))
3910         alcSetError(device, ALC_INVALID_VALUE);
3911     else
3912         aluMixData(device, buffer, samples);
3913     if(device) ALCdevice_DecRef(device);
3914 }
3915
3916
3917 /************************************************
3918  * ALC DSP pause/resume functions
3919  ************************************************/
3920
3921 /* alcDevicePauseSOFT
3922  *
3923  * Pause the DSP to stop audio processing.
3924  */
3925 ALC_API void ALC_APIENTRY alcDevicePauseSOFT(ALCdevice *device)
3926 {
3927     if(!VerifyDevice(&device) || device->Type != Playback)
3928         alcSetError(device, ALC_INVALID_DEVICE);
3929     else
3930     {
3931         almtx_lock(&device->BackendLock);
3932         if((device->Flags&DEVICE_RUNNING))
3933             V0(device->Backend,stop)();
3934         device->Flags &= ~DEVICE_RUNNING;
3935         device->Flags |= DEVICE_PAUSED;
3936         almtx_unlock(&device->BackendLock);
3937     }
3938     if(device) ALCdevice_DecRef(device);
3939 }
3940
3941 /* alcDeviceResumeSOFT
3942  *
3943  * Resume the DSP to restart audio processing.
3944  */
3945 ALC_API void ALC_APIENTRY alcDeviceResumeSOFT(ALCdevice *device)
3946 {
3947     if(!VerifyDevice(&device) || device->Type != Playback)
3948         alcSetError(device, ALC_INVALID_DEVICE);
3949     else
3950     {
3951         almtx_lock(&device->BackendLock);
3952         if((device->Flags&DEVICE_PAUSED))
3953         {
3954             device->Flags &= ~DEVICE_PAUSED;
3955             if(ATOMIC_LOAD(&device->ContextList) != NULL)
3956             {
3957                 if(V0(device->Backend,start)() != ALC_FALSE)
3958                     device->Flags |= DEVICE_RUNNING;
3959                 else
3960                 {
3961                     alcSetError(device, ALC_INVALID_DEVICE);
3962                     V0(device->Backend,lock)();
3963                     aluHandleDisconnect(device);
3964                     V0(device->Backend,unlock)();
3965                 }
3966             }
3967         }
3968         almtx_unlock(&device->BackendLock);
3969     }
3970     if(device) ALCdevice_DecRef(device);
3971 }
3972
3973
3974 /************************************************
3975  * ALC HRTF functions
3976  ************************************************/
3977
3978 /* alcGetStringiSOFT
3979  *
3980  * Gets a string parameter at the given index.
3981  */
3982 ALC_API const ALCchar* ALC_APIENTRY alcGetStringiSOFT(ALCdevice *device, ALCenum paramName, ALCsizei index)
3983 {
3984     const ALCchar *str = NULL;
3985
3986     if(!VerifyDevice(&device) || device->Type == Capture)
3987         alcSetError(device, ALC_INVALID_DEVICE);
3988     else switch(paramName)
3989     {
3990         case ALC_HRTF_SPECIFIER_SOFT:
3991             if(index >= 0 && (size_t)index < VECTOR_SIZE(device->Hrtf_List))
3992                 str = al_string_get_cstr(VECTOR_ELEM(device->Hrtf_List, index).name);
3993             else
3994                 alcSetError(device, ALC_INVALID_VALUE);
3995             break;
3996
3997         default:
3998             alcSetError(device, ALC_INVALID_ENUM);
3999             break;
4000     }
4001     if(device) ALCdevice_DecRef(device);
4002
4003     return str;
4004 }
4005
4006 /* alcResetDeviceSOFT
4007  *
4008  * Resets the given device output, using the specified attribute list.
4009  */
4010 ALC_API ALCboolean ALC_APIENTRY alcResetDeviceSOFT(ALCdevice *device, const ALCint *attribs)
4011 {
4012     ALCenum err;
4013
4014     LockLists();
4015     if(!VerifyDevice(&device) || device->Type == Capture || !device->Connected)
4016     {
4017         UnlockLists();
4018         alcSetError(device, ALC_INVALID_DEVICE);
4019         if(device) ALCdevice_DecRef(device);
4020         return ALC_FALSE;
4021     }
4022     almtx_lock(&device->BackendLock);
4023     UnlockLists();
4024
4025     err = UpdateDeviceParams(device, attribs);
4026     almtx_unlock(&device->BackendLock);
4027
4028     if(err != ALC_NO_ERROR)
4029     {
4030         alcSetError(device, err);
4031         if(err == ALC_INVALID_DEVICE)
4032         {
4033             V0(device->Backend,lock)();
4034             aluHandleDisconnect(device);
4035             V0(device->Backend,unlock)();
4036         }
4037         ALCdevice_DecRef(device);
4038         return ALC_FALSE;
4039     }
4040     ALCdevice_DecRef(device);
4041
4042     return ALC_TRUE;
4043 }