Alc/ALc.c

   1 /**
   2  * OpenAL cross platform audio library
   3  * Copyright (C) 1999-2007 by authors.
   4  * This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  *  License along with this library; if not, write to the
  16  *  Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  * Or go to http://www.gnu.org/copyleft/lgpl.html
  19  */
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <stdlib.h>
  25 #include <stdio.h>
  26 #include <memory.h>
  27 #include <ctype.h>
  28 #include <signal.h>
  29
  30 #include "alMain.h"
  31 #include "alSource.h"
  32 #include "alListener.h"
  33 #include "alThunk.h"
  34 #include "alSource.h"
  35 #include "alBuffer.h"
  36 #include "alAuxEffectSlot.h"
  37 #include "alError.h"
  38 #include "bformatdec.h"
  39 #include "alu.h"
  40
  41 #include "compat.h"
  42 #include "threads.h"
  43 #include "alstring.h"
  44 #include "almalloc.h"
  45
  46 #include "backends/base.h"
  47
  48
  49 /************************************************
  50  * Backends
  51  ************************************************/
  52 struct BackendInfo {
  53     const char *name;
  54     ALCbackendFactory* (*getFactory)(void);
  55     ALCboolean (*Init)(BackendFuncs*);
  56     void (*Deinit)(void);
  57     void (*Probe)(enum DevProbe);
  58     BackendFuncs Funcs;
  59 };
  60
  61 #define EmptyFuncs { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
  62 static struct BackendInfo BackendList[] = {
  63 #ifdef HAVE_JACK
  64     { "jack", ALCjackBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  65 #endif
  66 #ifdef HAVE_PULSEAUDIO
  67     { "pulse", ALCpulseBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  68 #endif
  69 #ifdef HAVE_ALSA
  70     { "alsa", ALCalsaBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  71 #endif
  72 #ifdef HAVE_COREAUDIO
  73     { "core", NULL, alc_ca_init, alc_ca_deinit, alc_ca_probe, EmptyFuncs },
  74 #endif
  75 #ifdef HAVE_OSS
  76     { "oss", ALCossBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  77 #endif
  78 #ifdef HAVE_SOLARIS
  79     { "solaris", ALCsolarisBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  80 #endif
  81 #ifdef HAVE_SNDIO
  82     { "sndio", NULL, alc_sndio_init, alc_sndio_deinit, alc_sndio_probe, EmptyFuncs },
  83 #endif
  84 #ifdef HAVE_QSA
  85     { "qsa", NULL, alc_qsa_init, alc_qsa_deinit, alc_qsa_probe, EmptyFuncs },
  86 #endif
  87 #ifdef HAVE_MMDEVAPI
  88     { "mmdevapi", ALCmmdevBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  89 #endif
  90 #ifdef HAVE_DSOUND
  91     { "dsound", ALCdsoundBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  92 #endif
  93 #ifdef HAVE_WINMM
  94     { "winmm", ALCwinmmBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  95 #endif
  96 #ifdef HAVE_PORTAUDIO
  97     { "port", ALCportBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
  98 #endif
  99 #ifdef HAVE_OPENSL
 100     { "opensl", NULL, alc_opensl_init, alc_opensl_deinit, alc_opensl_probe, EmptyFuncs },
 101 #endif
 102
 103     { "null", ALCnullBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
 104 #ifdef HAVE_WAVE
 105     { "wave", ALCwaveBackendFactory_getFactory, NULL, NULL, NULL, EmptyFuncs },
 106 #endif
 107
 108     { NULL, NULL, NULL, NULL, NULL, EmptyFuncs }
 109 };
 110 #undef EmptyFuncs
 111
 112 static struct BackendInfo PlaybackBackend;
 113 static struct BackendInfo CaptureBackend;
 114
 115
 116 /************************************************
 117  * Functions, enums, and errors
 118  ************************************************/
 119 typedef struct ALCfunction {
 120     const ALCchar *funcName;
 121     ALCvoid *address;
 122 } ALCfunction;
 123
 124 typedef struct ALCenums {
 125     const ALCchar *enumName;
 126     ALCenum value;
 127 } ALCenums;
 128
 129 #define DECL(x) { #x, (ALCvoid*)(x) }
 130 static const ALCfunction alcFunctions[] = {
 131     DECL(alcCreateContext),
 132     DECL(alcMakeContextCurrent),
 133     DECL(alcProcessContext),
 134     DECL(alcSuspendContext),
 135     DECL(alcDestroyContext),
 136     DECL(alcGetCurrentContext),
 137     DECL(alcGetContextsDevice),
 138     DECL(alcOpenDevice),
 139     DECL(alcCloseDevice),
 140     DECL(alcGetError),
 141     DECL(alcIsExtensionPresent),
 142     DECL(alcGetProcAddress),
 143     DECL(alcGetEnumValue),
 144     DECL(alcGetString),
 145     DECL(alcGetIntegerv),
 146     DECL(alcCaptureOpenDevice),
 147     DECL(alcCaptureCloseDevice),
 148     DECL(alcCaptureStart),
 149     DECL(alcCaptureStop),
 150     DECL(alcCaptureSamples),
 151
 152     DECL(alcSetThreadContext),
 153     DECL(alcGetThreadContext),
 154
 155     DECL(alcLoopbackOpenDeviceSOFT),
 156     DECL(alcIsRenderFormatSupportedSOFT),
 157     DECL(alcRenderSamplesSOFT),
 158
 159     DECL(alcDevicePauseSOFT),
 160     DECL(alcDeviceResumeSOFT),
 161
 162     DECL(alcGetStringiSOFT),
 163     DECL(alcResetDeviceSOFT),
 164
 165     DECL(alcGetInteger64vSOFT),
 166
 167     DECL(alEnable),
 168     DECL(alDisable),
 169     DECL(alIsEnabled),
 170     DECL(alGetString),
 171     DECL(alGetBooleanv),
 172     DECL(alGetIntegerv),
 173     DECL(alGetFloatv),
 174     DECL(alGetDoublev),
 175     DECL(alGetBoolean),
 176     DECL(alGetInteger),
 177     DECL(alGetFloat),
 178     DECL(alGetDouble),
 179     DECL(alGetError),
 180     DECL(alIsExtensionPresent),
 181     DECL(alGetProcAddress),
 182     DECL(alGetEnumValue),
 183     DECL(alListenerf),
 184     DECL(alListener3f),
 185     DECL(alListenerfv),
 186     DECL(alListeneri),
 187     DECL(alListener3i),
 188     DECL(alListeneriv),
 189     DECL(alGetListenerf),
 190     DECL(alGetListener3f),
 191     DECL(alGetListenerfv),
 192     DECL(alGetListeneri),
 193     DECL(alGetListener3i),
 194     DECL(alGetListeneriv),
 195     DECL(alGenSources),
 196     DECL(alDeleteSources),
 197     DECL(alIsSource),
 198     DECL(alSourcef),
 199     DECL(alSource3f),
 200     DECL(alSourcefv),
 201     DECL(alSourcei),
 202     DECL(alSource3i),
 203     DECL(alSourceiv),
 204     DECL(alGetSourcef),
 205     DECL(alGetSource3f),
 206     DECL(alGetSourcefv),
 207     DECL(alGetSourcei),
 208     DECL(alGetSource3i),
 209     DECL(alGetSourceiv),
 210     DECL(alSourcePlayv),
 211     DECL(alSourceStopv),
 212     DECL(alSourceRewindv),
 213     DECL(alSourcePausev),
 214     DECL(alSourcePlay),
 215     DECL(alSourceStop),
 216     DECL(alSourceRewind),
 217     DECL(alSourcePause),
 218     DECL(alSourceQueueBuffers),
 219     DECL(alSourceUnqueueBuffers),
 220     DECL(alGenBuffers),
 221     DECL(alDeleteBuffers),
 222     DECL(alIsBuffer),
 223     DECL(alBufferData),
 224     DECL(alBufferf),
 225     DECL(alBuffer3f),
 226     DECL(alBufferfv),
 227     DECL(alBufferi),
 228     DECL(alBuffer3i),
 229     DECL(alBufferiv),
 230     DECL(alGetBufferf),
 231     DECL(alGetBuffer3f),
 232     DECL(alGetBufferfv),
 233     DECL(alGetBufferi),
 234     DECL(alGetBuffer3i),
 235     DECL(alGetBufferiv),
 236     DECL(alDopplerFactor),
 237     DECL(alDopplerVelocity),
 238     DECL(alSpeedOfSound),
 239     DECL(alDistanceModel),
 240
 241     DECL(alGenFilters),
 242     DECL(alDeleteFilters),
 243     DECL(alIsFilter),
 244     DECL(alFilteri),
 245     DECL(alFilteriv),
 246     DECL(alFilterf),
 247     DECL(alFilterfv),
 248     DECL(alGetFilteri),
 249     DECL(alGetFilteriv),
 250     DECL(alGetFilterf),
 251     DECL(alGetFilterfv),
 252     DECL(alGenEffects),
 253     DECL(alDeleteEffects),
 254     DECL(alIsEffect),
 255     DECL(alEffecti),
 256     DECL(alEffectiv),
 257     DECL(alEffectf),
 258     DECL(alEffectfv),
 259     DECL(alGetEffecti),
 260     DECL(alGetEffectiv),
 261     DECL(alGetEffectf),
 262     DECL(alGetEffectfv),
 263     DECL(alGenAuxiliaryEffectSlots),
 264     DECL(alDeleteAuxiliaryEffectSlots),
 265     DECL(alIsAuxiliaryEffectSlot),
 266     DECL(alAuxiliaryEffectSloti),
 267     DECL(alAuxiliaryEffectSlotiv),
 268     DECL(alAuxiliaryEffectSlotf),
 269     DECL(alAuxiliaryEffectSlotfv),
 270     DECL(alGetAuxiliaryEffectSloti),
 271     DECL(alGetAuxiliaryEffectSlotiv),
 272     DECL(alGetAuxiliaryEffectSlotf),
 273     DECL(alGetAuxiliaryEffectSlotfv),
 274
 275     DECL(alDeferUpdatesSOFT),
 276     DECL(alProcessUpdatesSOFT),
 277
 278     DECL(alSourcedSOFT),
 279     DECL(alSource3dSOFT),
 280     DECL(alSourcedvSOFT),
 281     DECL(alGetSourcedSOFT),
 282     DECL(alGetSource3dSOFT),
 283     DECL(alGetSourcedvSOFT),
 284     DECL(alSourcei64SOFT),
 285     DECL(alSource3i64SOFT),
 286     DECL(alSourcei64vSOFT),
 287     DECL(alGetSourcei64SOFT),
 288     DECL(alGetSource3i64SOFT),
 289     DECL(alGetSourcei64vSOFT),
 290
 291     DECL(alBufferSamplesSOFT),
 292     DECL(alGetBufferSamplesSOFT),
 293     DECL(alIsBufferFormatSupportedSOFT),
 294
 295     { NULL, NULL }
 296 };
 297 #undef DECL
 298
 299 #define DECL(x) { #x, (x) }
 300 static const ALCenums enumeration[] = {
 301     DECL(ALC_INVALID),
 302     DECL(ALC_FALSE),
 303     DECL(ALC_TRUE),
 304
 305     DECL(ALC_MAJOR_VERSION),
 306     DECL(ALC_MINOR_VERSION),
 307     DECL(ALC_ATTRIBUTES_SIZE),
 308     DECL(ALC_ALL_ATTRIBUTES),
 309     DECL(ALC_DEFAULT_DEVICE_SPECIFIER),
 310     DECL(ALC_DEVICE_SPECIFIER),
 311     DECL(ALC_ALL_DEVICES_SPECIFIER),
 312     DECL(ALC_DEFAULT_ALL_DEVICES_SPECIFIER),
 313     DECL(ALC_EXTENSIONS),
 314     DECL(ALC_FREQUENCY),
 315     DECL(ALC_REFRESH),
 316     DECL(ALC_SYNC),
 317     DECL(ALC_MONO_SOURCES),
 318     DECL(ALC_STEREO_SOURCES),
 319     DECL(ALC_CAPTURE_DEVICE_SPECIFIER),
 320     DECL(ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER),
 321     DECL(ALC_CAPTURE_SAMPLES),
 322     DECL(ALC_CONNECTED),
 323
 324     DECL(ALC_EFX_MAJOR_VERSION),
 325     DECL(ALC_EFX_MINOR_VERSION),
 326     DECL(ALC_MAX_AUXILIARY_SENDS),
 327
 328     DECL(ALC_FORMAT_CHANNELS_SOFT),
 329     DECL(ALC_FORMAT_TYPE_SOFT),
 330
 331     DECL(ALC_MONO_SOFT),
 332     DECL(ALC_STEREO_SOFT),
 333     DECL(ALC_QUAD_SOFT),
 334     DECL(ALC_5POINT1_SOFT),
 335     DECL(ALC_6POINT1_SOFT),
 336     DECL(ALC_7POINT1_SOFT),
 337
 338     DECL(ALC_BYTE_SOFT),
 339     DECL(ALC_UNSIGNED_BYTE_SOFT),
 340     DECL(ALC_SHORT_SOFT),
 341     DECL(ALC_UNSIGNED_SHORT_SOFT),
 342     DECL(ALC_INT_SOFT),
 343     DECL(ALC_UNSIGNED_INT_SOFT),
 344     DECL(ALC_FLOAT_SOFT),
 345
 346     DECL(ALC_HRTF_SOFT),
 347     DECL(ALC_DONT_CARE_SOFT),
 348     DECL(ALC_HRTF_STATUS_SOFT),
 349     DECL(ALC_HRTF_DISABLED_SOFT),
 350     DECL(ALC_HRTF_ENABLED_SOFT),
 351     DECL(ALC_HRTF_DENIED_SOFT),
 352     DECL(ALC_HRTF_REQUIRED_SOFT),
 353     DECL(ALC_HRTF_HEADPHONES_DETECTED_SOFT),
 354     DECL(ALC_HRTF_UNSUPPORTED_FORMAT_SOFT),
 355     DECL(ALC_NUM_HRTF_SPECIFIERS_SOFT),
 356     DECL(ALC_HRTF_SPECIFIER_SOFT),
 357     DECL(ALC_HRTF_ID_SOFT),
 358
 359     DECL(ALC_NO_ERROR),
 360     DECL(ALC_INVALID_DEVICE),
 361     DECL(ALC_INVALID_CONTEXT),
 362     DECL(ALC_INVALID_ENUM),
 363     DECL(ALC_INVALID_VALUE),
 364     DECL(ALC_OUT_OF_MEMORY),
 365
 366
 367     DECL(AL_INVALID),
 368     DECL(AL_NONE),
 369     DECL(AL_FALSE),
 370     DECL(AL_TRUE),
 371
 372     DECL(AL_SOURCE_RELATIVE),
 373     DECL(AL_CONE_INNER_ANGLE),
 374     DECL(AL_CONE_OUTER_ANGLE),
 375     DECL(AL_PITCH),
 376     DECL(AL_POSITION),
 377     DECL(AL_DIRECTION),
 378     DECL(AL_VELOCITY),
 379     DECL(AL_LOOPING),
 380     DECL(AL_BUFFER),
 381     DECL(AL_GAIN),
 382     DECL(AL_MIN_GAIN),
 383     DECL(AL_MAX_GAIN),
 384     DECL(AL_ORIENTATION),
 385     DECL(AL_REFERENCE_DISTANCE),
 386     DECL(AL_ROLLOFF_FACTOR),
 387     DECL(AL_CONE_OUTER_GAIN),
 388     DECL(AL_MAX_DISTANCE),
 389     DECL(AL_SEC_OFFSET),
 390     DECL(AL_SAMPLE_OFFSET),
 391     DECL(AL_BYTE_OFFSET),
 392     DECL(AL_SOURCE_TYPE),
 393     DECL(AL_STATIC),
 394     DECL(AL_STREAMING),
 395     DECL(AL_UNDETERMINED),
 396     DECL(AL_METERS_PER_UNIT),
 397     DECL(AL_LOOP_POINTS_SOFT),
 398     DECL(AL_DIRECT_CHANNELS_SOFT),
 399
 400     DECL(AL_DIRECT_FILTER),
 401     DECL(AL_AUXILIARY_SEND_FILTER),
 402     DECL(AL_AIR_ABSORPTION_FACTOR),
 403     DECL(AL_ROOM_ROLLOFF_FACTOR),
 404     DECL(AL_CONE_OUTER_GAINHF),
 405     DECL(AL_DIRECT_FILTER_GAINHF_AUTO),
 406     DECL(AL_AUXILIARY_SEND_FILTER_GAIN_AUTO),
 407     DECL(AL_AUXILIARY_SEND_FILTER_GAINHF_AUTO),
 408
 409     DECL(AL_SOURCE_STATE),
 410     DECL(AL_INITIAL),
 411     DECL(AL_PLAYING),
 412     DECL(AL_PAUSED),
 413     DECL(AL_STOPPED),
 414
 415     DECL(AL_BUFFERS_QUEUED),
 416     DECL(AL_BUFFERS_PROCESSED),
 417
 418     DECL(AL_FORMAT_MONO8),
 419     DECL(AL_FORMAT_MONO16),
 420     DECL(AL_FORMAT_MONO_FLOAT32),
 421     DECL(AL_FORMAT_MONO_DOUBLE_EXT),
 422     DECL(AL_FORMAT_STEREO8),
 423     DECL(AL_FORMAT_STEREO16),
 424     DECL(AL_FORMAT_STEREO_FLOAT32),
 425     DECL(AL_FORMAT_STEREO_DOUBLE_EXT),
 426     DECL(AL_FORMAT_MONO_IMA4),
 427     DECL(AL_FORMAT_STEREO_IMA4),
 428     DECL(AL_FORMAT_MONO_MSADPCM_SOFT),
 429     DECL(AL_FORMAT_STEREO_MSADPCM_SOFT),
 430     DECL(AL_FORMAT_QUAD8_LOKI),
 431     DECL(AL_FORMAT_QUAD16_LOKI),
 432     DECL(AL_FORMAT_QUAD8),
 433     DECL(AL_FORMAT_QUAD16),
 434     DECL(AL_FORMAT_QUAD32),
 435     DECL(AL_FORMAT_51CHN8),
 436     DECL(AL_FORMAT_51CHN16),
 437     DECL(AL_FORMAT_51CHN32),
 438     DECL(AL_FORMAT_61CHN8),
 439     DECL(AL_FORMAT_61CHN16),
 440     DECL(AL_FORMAT_61CHN32),
 441     DECL(AL_FORMAT_71CHN8),
 442     DECL(AL_FORMAT_71CHN16),
 443     DECL(AL_FORMAT_71CHN32),
 444     DECL(AL_FORMAT_REAR8),
 445     DECL(AL_FORMAT_REAR16),
 446     DECL(AL_FORMAT_REAR32),
 447     DECL(AL_FORMAT_MONO_MULAW),
 448     DECL(AL_FORMAT_MONO_MULAW_EXT),
 449     DECL(AL_FORMAT_STEREO_MULAW),
 450     DECL(AL_FORMAT_STEREO_MULAW_EXT),
 451     DECL(AL_FORMAT_QUAD_MULAW),
 452     DECL(AL_FORMAT_51CHN_MULAW),
 453     DECL(AL_FORMAT_61CHN_MULAW),
 454     DECL(AL_FORMAT_71CHN_MULAW),
 455     DECL(AL_FORMAT_REAR_MULAW),
 456     DECL(AL_FORMAT_MONO_ALAW_EXT),
 457     DECL(AL_FORMAT_STEREO_ALAW_EXT),
 458
 459     DECL(AL_FORMAT_BFORMAT2D_8),
 460     DECL(AL_FORMAT_BFORMAT2D_16),
 461     DECL(AL_FORMAT_BFORMAT2D_FLOAT32),
 462     DECL(AL_FORMAT_BFORMAT2D_MULAW),
 463     DECL(AL_FORMAT_BFORMAT3D_8),
 464     DECL(AL_FORMAT_BFORMAT3D_16),
 465     DECL(AL_FORMAT_BFORMAT3D_FLOAT32),
 466     DECL(AL_FORMAT_BFORMAT3D_MULAW),
 467
 468     DECL(AL_MONO8_SOFT),
 469     DECL(AL_MONO16_SOFT),
 470     DECL(AL_MONO32F_SOFT),
 471     DECL(AL_STEREO8_SOFT),
 472     DECL(AL_STEREO16_SOFT),
 473     DECL(AL_STEREO32F_SOFT),
 474     DECL(AL_QUAD8_SOFT),
 475     DECL(AL_QUAD16_SOFT),
 476     DECL(AL_QUAD32F_SOFT),
 477     DECL(AL_REAR8_SOFT),
 478     DECL(AL_REAR16_SOFT),
 479     DECL(AL_REAR32F_SOFT),
 480     DECL(AL_5POINT1_8_SOFT),
 481     DECL(AL_5POINT1_16_SOFT),
 482     DECL(AL_5POINT1_32F_SOFT),
 483     DECL(AL_6POINT1_8_SOFT),
 484     DECL(AL_6POINT1_16_SOFT),
 485     DECL(AL_6POINT1_32F_SOFT),
 486     DECL(AL_7POINT1_8_SOFT),
 487     DECL(AL_7POINT1_16_SOFT),
 488     DECL(AL_7POINT1_32F_SOFT),
 489     DECL(AL_BFORMAT2D_8_SOFT),
 490     DECL(AL_BFORMAT2D_16_SOFT),
 491     DECL(AL_BFORMAT2D_32F_SOFT),
 492     DECL(AL_BFORMAT3D_8_SOFT),
 493     DECL(AL_BFORMAT3D_16_SOFT),
 494     DECL(AL_BFORMAT3D_32F_SOFT),
 495
 496     DECL(AL_MONO_SOFT),
 497     DECL(AL_STEREO_SOFT),
 498     DECL(AL_QUAD_SOFT),
 499     DECL(AL_REAR_SOFT),
 500     DECL(AL_5POINT1_SOFT),
 501     DECL(AL_6POINT1_SOFT),
 502     DECL(AL_7POINT1_SOFT),
 503     DECL(AL_BFORMAT2D_SOFT),
 504     DECL(AL_BFORMAT3D_SOFT),
 505
 506     DECL(AL_BYTE_SOFT),
 507     DECL(AL_UNSIGNED_BYTE_SOFT),
 508     DECL(AL_SHORT_SOFT),
 509     DECL(AL_UNSIGNED_SHORT_SOFT),
 510     DECL(AL_INT_SOFT),
 511     DECL(AL_UNSIGNED_INT_SOFT),
 512     DECL(AL_FLOAT_SOFT),
 513     DECL(AL_DOUBLE_SOFT),
 514     DECL(AL_BYTE3_SOFT),
 515     DECL(AL_UNSIGNED_BYTE3_SOFT),
 516     DECL(AL_MULAW_SOFT),
 517
 518     DECL(AL_FREQUENCY),
 519     DECL(AL_BITS),
 520     DECL(AL_CHANNELS),
 521     DECL(AL_SIZE),
 522     DECL(AL_INTERNAL_FORMAT_SOFT),
 523     DECL(AL_BYTE_LENGTH_SOFT),
 524     DECL(AL_SAMPLE_LENGTH_SOFT),
 525     DECL(AL_SEC_LENGTH_SOFT),
 526     DECL(AL_UNPACK_BLOCK_ALIGNMENT_SOFT),
 527     DECL(AL_PACK_BLOCK_ALIGNMENT_SOFT),
 528
 529     DECL(AL_SOURCE_RADIUS),
 530
 531     DECL(AL_STEREO_ANGLES),
 532
 533     DECL(AL_UNUSED),
 534     DECL(AL_PENDING),
 535     DECL(AL_PROCESSED),
 536
 537     DECL(AL_NO_ERROR),
 538     DECL(AL_INVALID_NAME),
 539     DECL(AL_INVALID_ENUM),
 540     DECL(AL_INVALID_VALUE),
 541     DECL(AL_INVALID_OPERATION),
 542     DECL(AL_OUT_OF_MEMORY),
 543
 544     DECL(AL_VENDOR),
 545     DECL(AL_VERSION),
 546     DECL(AL_RENDERER),
 547     DECL(AL_EXTENSIONS),
 548
 549     DECL(AL_DOPPLER_FACTOR),
 550     DECL(AL_DOPPLER_VELOCITY),
 551     DECL(AL_DISTANCE_MODEL),
 552     DECL(AL_SPEED_OF_SOUND),
 553     DECL(AL_SOURCE_DISTANCE_MODEL),
 554     DECL(AL_DEFERRED_UPDATES_SOFT),
 555
 556     DECL(AL_INVERSE_DISTANCE),
 557     DECL(AL_INVERSE_DISTANCE_CLAMPED),
 558     DECL(AL_LINEAR_DISTANCE),
 559     DECL(AL_LINEAR_DISTANCE_CLAMPED),
 560     DECL(AL_EXPONENT_DISTANCE),
 561     DECL(AL_EXPONENT_DISTANCE_CLAMPED),
 562
 563     DECL(AL_FILTER_TYPE),
 564     DECL(AL_FILTER_NULL),
 565     DECL(AL_FILTER_LOWPASS),
 566     DECL(AL_FILTER_HIGHPASS),
 567     DECL(AL_FILTER_BANDPASS),
 568
 569     DECL(AL_LOWPASS_GAIN),
 570     DECL(AL_LOWPASS_GAINHF),
 571
 572     DECL(AL_HIGHPASS_GAIN),
 573     DECL(AL_HIGHPASS_GAINLF),
 574
 575     DECL(AL_BANDPASS_GAIN),
 576     DECL(AL_BANDPASS_GAINHF),
 577     DECL(AL_BANDPASS_GAINLF),
 578
 579     DECL(AL_EFFECT_TYPE),
 580     DECL(AL_EFFECT_NULL),
 581     DECL(AL_EFFECT_REVERB),
 582     DECL(AL_EFFECT_EAXREVERB),
 583     DECL(AL_EFFECT_CHORUS),
 584     DECL(AL_EFFECT_DISTORTION),
 585     DECL(AL_EFFECT_ECHO),
 586     DECL(AL_EFFECT_FLANGER),
 587 #if 0
 588     DECL(AL_EFFECT_FREQUENCY_SHIFTER),
 589     DECL(AL_EFFECT_VOCAL_MORPHER),
 590     DECL(AL_EFFECT_PITCH_SHIFTER),
 591 #endif
 592     DECL(AL_EFFECT_RING_MODULATOR),
 593 #if 0
 594     DECL(AL_EFFECT_AUTOWAH),
 595 #endif
 596     DECL(AL_EFFECT_COMPRESSOR),
 597     DECL(AL_EFFECT_EQUALIZER),
 598     DECL(AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT),
 599     DECL(AL_EFFECT_DEDICATED_DIALOGUE),
 600
 601     DECL(AL_EAXREVERB_DENSITY),
 602     DECL(AL_EAXREVERB_DIFFUSION),
 603     DECL(AL_EAXREVERB_GAIN),
 604     DECL(AL_EAXREVERB_GAINHF),
 605     DECL(AL_EAXREVERB_GAINLF),
 606     DECL(AL_EAXREVERB_DECAY_TIME),
 607     DECL(AL_EAXREVERB_DECAY_HFRATIO),
 608     DECL(AL_EAXREVERB_DECAY_LFRATIO),
 609     DECL(AL_EAXREVERB_REFLECTIONS_GAIN),
 610     DECL(AL_EAXREVERB_REFLECTIONS_DELAY),
 611     DECL(AL_EAXREVERB_REFLECTIONS_PAN),
 612     DECL(AL_EAXREVERB_LATE_REVERB_GAIN),
 613     DECL(AL_EAXREVERB_LATE_REVERB_DELAY),
 614     DECL(AL_EAXREVERB_LATE_REVERB_PAN),
 615     DECL(AL_EAXREVERB_ECHO_TIME),
 616     DECL(AL_EAXREVERB_ECHO_DEPTH),
 617     DECL(AL_EAXREVERB_MODULATION_TIME),
 618     DECL(AL_EAXREVERB_MODULATION_DEPTH),
 619     DECL(AL_EAXREVERB_AIR_ABSORPTION_GAINHF),
 620     DECL(AL_EAXREVERB_HFREFERENCE),
 621     DECL(AL_EAXREVERB_LFREFERENCE),
 622     DECL(AL_EAXREVERB_ROOM_ROLLOFF_FACTOR),
 623     DECL(AL_EAXREVERB_DECAY_HFLIMIT),
 624
 625     DECL(AL_REVERB_DENSITY),
 626     DECL(AL_REVERB_DIFFUSION),
 627     DECL(AL_REVERB_GAIN),
 628     DECL(AL_REVERB_GAINHF),
 629     DECL(AL_REVERB_DECAY_TIME),
 630     DECL(AL_REVERB_DECAY_HFRATIO),
 631     DECL(AL_REVERB_REFLECTIONS_GAIN),
 632     DECL(AL_REVERB_REFLECTIONS_DELAY),
 633     DECL(AL_REVERB_LATE_REVERB_GAIN),
 634     DECL(AL_REVERB_LATE_REVERB_DELAY),
 635     DECL(AL_REVERB_AIR_ABSORPTION_GAINHF),
 636     DECL(AL_REVERB_ROOM_ROLLOFF_FACTOR),
 637     DECL(AL_REVERB_DECAY_HFLIMIT),
 638
 639     DECL(AL_CHORUS_WAVEFORM),
 640     DECL(AL_CHORUS_PHASE),
 641     DECL(AL_CHORUS_RATE),
 642     DECL(AL_CHORUS_DEPTH),
 643     DECL(AL_CHORUS_FEEDBACK),
 644     DECL(AL_CHORUS_DELAY),
 645
 646     DECL(AL_DISTORTION_EDGE),
 647     DECL(AL_DISTORTION_GAIN),
 648     DECL(AL_DISTORTION_LOWPASS_CUTOFF),
 649     DECL(AL_DISTORTION_EQCENTER),
 650     DECL(AL_DISTORTION_EQBANDWIDTH),
 651
 652     DECL(AL_ECHO_DELAY),
 653     DECL(AL_ECHO_LRDELAY),
 654     DECL(AL_ECHO_DAMPING),
 655     DECL(AL_ECHO_FEEDBACK),
 656     DECL(AL_ECHO_SPREAD),
 657
 658     DECL(AL_FLANGER_WAVEFORM),
 659     DECL(AL_FLANGER_PHASE),
 660     DECL(AL_FLANGER_RATE),
 661     DECL(AL_FLANGER_DEPTH),
 662     DECL(AL_FLANGER_FEEDBACK),
 663     DECL(AL_FLANGER_DELAY),
 664
 665     DECL(AL_RING_MODULATOR_FREQUENCY),
 666     DECL(AL_RING_MODULATOR_HIGHPASS_CUTOFF),
 667     DECL(AL_RING_MODULATOR_WAVEFORM),
 668
 669 #if 0
 670     DECL(AL_AUTOWAH_ATTACK_TIME),
 671     DECL(AL_AUTOWAH_PEAK_GAIN),
 672     DECL(AL_AUTOWAH_RELEASE_TIME),
 673     DECL(AL_AUTOWAH_RESONANCE),
 674 #endif
 675
 676     DECL(AL_COMPRESSOR_ONOFF),
 677
 678     DECL(AL_EQUALIZER_LOW_GAIN),
 679     DECL(AL_EQUALIZER_LOW_CUTOFF),
 680     DECL(AL_EQUALIZER_MID1_GAIN),
 681     DECL(AL_EQUALIZER_MID1_CENTER),
 682     DECL(AL_EQUALIZER_MID1_WIDTH),
 683     DECL(AL_EQUALIZER_MID2_GAIN),
 684     DECL(AL_EQUALIZER_MID2_CENTER),
 685     DECL(AL_EQUALIZER_MID2_WIDTH),
 686     DECL(AL_EQUALIZER_HIGH_GAIN),
 687     DECL(AL_EQUALIZER_HIGH_CUTOFF),
 688
 689     DECL(AL_DEDICATED_GAIN),
 690
 691     { NULL, (ALCenum)0 }
 692 };
 693 #undef DECL
 694
 695 static const ALCchar alcNoError[] = "No Error";
 696 static const ALCchar alcErrInvalidDevice[] = "Invalid Device";
 697 static const ALCchar alcErrInvalidContext[] = "Invalid Context";
 698 static const ALCchar alcErrInvalidEnum[] = "Invalid Enum";
 699 static const ALCchar alcErrInvalidValue[] = "Invalid Value";
 700 static const ALCchar alcErrOutOfMemory[] = "Out of Memory";
 701
 702
 703 /************************************************
 704  * Global variables
 705  ************************************************/
 706
 707 /* Enumerated device names */
 708 static const ALCchar alcDefaultName[] = "OpenAL Soft\0";
 709
 710 static al_string alcAllDevicesList;
 711 static al_string alcCaptureDeviceList;
 712
 713 /* Default is always the first in the list */
 714 static ALCchar *alcDefaultAllDevicesSpecifier;
 715 static ALCchar *alcCaptureDefaultDeviceSpecifier;
 716
 717 /* Default context extensions */
 718 static const ALchar alExtList[] =
 719     "AL_EXT_ALAW AL_EXT_BFORMAT AL_EXT_DOUBLE AL_EXT_EXPONENT_DISTANCE "
 720     "AL_EXT_FLOAT32 AL_EXT_IMA4 AL_EXT_LINEAR_DISTANCE AL_EXT_MCFORMATS "
 721     "AL_EXT_MULAW AL_EXT_MULAW_BFORMAT AL_EXT_MULAW_MCFORMATS AL_EXT_OFFSET "
 722     "AL_EXT_source_distance_model AL_EXT_SOURCE_RADIUS AL_EXT_STEREO_ANGLES "
 723     "AL_LOKI_quadriphonic AL_SOFT_block_alignment AL_SOFT_deferred_updates "
 724     "AL_SOFT_direct_channels AL_SOFT_loop_points AL_SOFT_MSADPCM "
 725     "AL_SOFT_source_latency AL_SOFT_source_length";
 726
 727 static ATOMIC(ALCenum) LastNullDeviceError = ATOMIC_INIT_STATIC(ALC_NO_ERROR);
 728
 729 /* Thread-local current context */
 730 static altss_t LocalContext;
 731 /* Process-wide current context */
 732 static ATOMIC(ALCcontext*) GlobalContext = ATOMIC_INIT_STATIC(NULL);
 733
 734 /* Mixing thread piority level */
 735 ALint RTPrioLevel;
 736
 737 FILE *LogFile;
 738 #ifdef _DEBUG
 739 enum LogLevel LogLevel = LogWarning;
 740 #else
 741 enum LogLevel LogLevel = LogError;
 742 #endif
 743
 744 /* Flag to trap ALC device errors */
 745 static ALCboolean TrapALCError = ALC_FALSE;
 746
 747 /* One-time configuration init control */
 748 static alonce_flag alc_config_once = AL_ONCE_FLAG_INIT;
 749
 750 /* Default effect that applies to sources that don't have an effect on send 0 */
 751 static ALeffect DefaultEffect;
 752
 753 /* Flag to specify if alcSuspendContext/alcProcessContext should defer/process
 754  * updates.
 755  */
 756 static ALCboolean SuspendDefers = ALC_TRUE;
 757
 758
 759 /************************************************
 760  * ALC information
 761  ************************************************/
 762 static const ALCchar alcNoDeviceExtList[] =
 763     "ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE "
 764     "ALC_EXT_thread_local_context ALC_SOFT_loopback";
 765 static const ALCchar alcExtensionList[] =
 766     "ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE "
 767     "ALC_EXT_DEDICATED ALC_EXT_disconnect ALC_EXT_EFX "
 768     "ALC_EXT_thread_local_context ALC_SOFTX_device_clock ALC_SOFT_HRTF "
 769     "ALC_SOFT_loopback ALC_SOFT_pause_device";
 770 static const ALCint alcMajorVersion = 1;
 771 static const ALCint alcMinorVersion = 1;
 772
 773 static const ALCint alcEFXMajorVersion = 1;
 774 static const ALCint alcEFXMinorVersion = 0;
 775
 776
 777 /************************************************
 778  * Device lists
 779  ************************************************/
 780 static ATOMIC(ALCdevice*) DeviceList = ATOMIC_INIT_STATIC(NULL);
 781
 782 static almtx_t ListLock;
 783 static inline void LockLists(void)
 784 {
 785     int lockret = almtx_lock(&ListLock);
 786     assert(lockret == althrd_success);
 787 }
 788 static inline void UnlockLists(void)
 789 {
 790     int unlockret = almtx_unlock(&ListLock);
 791     assert(unlockret == althrd_success);
 792 }
 793
 794 /************************************************
 795  * Library initialization
 796  ************************************************/
 797 #if defined(_WIN32)
 798 static void alc_init(void);
 799 static void alc_deinit(void);
 800 static void alc_deinit_safe(void);
 801
 802 #ifndef AL_LIBTYPE_STATIC
 803 BOOL APIENTRY DllMain(HINSTANCE hModule, DWORD reason, LPVOID lpReserved)
 804 {
 805     switch(reason)
 806     {
 807         case DLL_PROCESS_ATTACH:
 808             /* Pin the DLL so we won't get unloaded until the process terminates */
 809             GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_PIN | GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
 810                                (WCHAR*)hModule, &hModule);
 811             alc_init();
 812             break;
 813
 814         case DLL_THREAD_DETACH:
 815             break;
 816
 817         case DLL_PROCESS_DETACH:
 818             if(!lpReserved)
 819                 alc_deinit();
 820             else
 821                 alc_deinit_safe();
 822             break;
 823     }
 824     return TRUE;
 825 }
 826 #elif defined(_MSC_VER)
 827 #pragma section(".CRT$XCU",read)
 828 static void alc_constructor(void);
 829 static void alc_destructor(void);
 830 __declspec(allocate(".CRT$XCU")) void (__cdecl* alc_constructor_)(void) = alc_constructor;
 831
 832 static void alc_constructor(void)
 833 {
 834     atexit(alc_destructor);
 835     alc_init();
 836 }
 837
 838 static void alc_destructor(void)
 839 {
 840     alc_deinit();
 841 }
 842 #elif defined(HAVE_GCC_DESTRUCTOR)
 843 static void alc_init(void) __attribute__((constructor));
 844 static void alc_deinit(void) __attribute__((destructor));
 845 #else
 846 #error "No static initialization available on this platform!"
 847 #endif
 848
 849 #elif defined(HAVE_GCC_DESTRUCTOR)
 850
 851 static void alc_init(void) __attribute__((constructor));
 852 static void alc_deinit(void) __attribute__((destructor));
 853
 854 #else
 855 #error "No global initialization available on this platform!"
 856 #endif
 857
 858 static void ReleaseThreadCtx(void *ptr);
 859 static void alc_init(void)
 860 {
 861     const char *str;
 862     int ret;
 863
 864     LogFile = stderr;
 865
 866     AL_STRING_INIT(alcAllDevicesList);
 867     AL_STRING_INIT(alcCaptureDeviceList);
 868
 869     str = getenv("__ALSOFT_HALF_ANGLE_CONES");
 870     if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
 871         ConeScale *= 0.5f;
 872
 873     str = getenv("__ALSOFT_REVERSE_Z");
 874     if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
 875         ZScale *= -1.0f;
 876
 877     ret = altss_create(&LocalContext, ReleaseThreadCtx);
 878     assert(ret == althrd_success);
 879
 880     ret = almtx_init(&ListLock, almtx_recursive);
 881     assert(ret == althrd_success);
 882
 883     ThunkInit();
 884 }
 885
 886 static void alc_initconfig(void)
 887 {
 888     const char *devs, *str;
 889     ALuint capfilter;
 890     float valf;
 891     int i, n;
 892
 893     str = getenv("ALSOFT_LOGLEVEL");
 894     if(str)
 895     {
 896         long lvl = strtol(str, NULL, 0);
 897         if(lvl >= NoLog && lvl <= LogRef)
 898             LogLevel = lvl;
 899     }
 900
 901     str = getenv("ALSOFT_LOGFILE");
 902     if(str && str[0])
 903     {
 904         FILE *logfile = al_fopen(str, "wt");
 905         if(logfile) LogFile = logfile;
 906         else ERR("Failed to open log file '%s'\n", str);
 907     }
 908
 909     {
 910         char buf[1024] = "";
 911         int len = snprintf(buf, sizeof(buf), "%s", BackendList[0].name);
 912         for(i = 1;BackendList[i].name;i++)
 913             len += snprintf(buf+len, sizeof(buf)-len, ", %s", BackendList[i].name);
 914         TRACE("Supported backends: %s\n", buf);
 915     }
 916     ReadALConfig();
 917
 918     str = getenv("__ALSOFT_SUSPEND_CONTEXT");
 919     if(str && *str)
 920     {
 921         if(strcasecmp(str, "ignore") == 0)
 922         {
 923             SuspendDefers = ALC_FALSE;
 924             TRACE("Selected context suspend behavior, \"ignore\"\n");
 925         }
 926         else
 927             ERR("Unhandled context suspend behavior setting: \"%s\"\n", str);
 928     }
 929
 930     capfilter = 0;
 931 #if defined(HAVE_SSE4_1)
 932     capfilter |= CPU_CAP_SSE | CPU_CAP_SSE2 | CPU_CAP_SSE3 | CPU_CAP_SSE4_1;
 933 #elif defined(HAVE_SSE3)
 934     capfilter |= CPU_CAP_SSE | CPU_CAP_SSE2 | CPU_CAP_SSE3;
 935 #elif defined(HAVE_SSE2)
 936     capfilter |= CPU_CAP_SSE | CPU_CAP_SSE2;
 937 #elif defined(HAVE_SSE)
 938     capfilter |= CPU_CAP_SSE;
 939 #endif
 940 #ifdef HAVE_NEON
 941     capfilter |= CPU_CAP_NEON;
 942 #endif
 943     if(ConfigValueStr(NULL, NULL, "disable-cpu-exts", &str))
 944     {
 945         if(strcasecmp(str, "all") == 0)
 946             capfilter = 0;
 947         else
 948         {
 949             size_t len;
 950             const char *next = str;
 951
 952             do {
 953                 str = next;
 954                 while(isspace(str[0]))
 955                     str++;
 956                 next = strchr(str, ',');
 957
 958                 if(!str[0] || str[0] == ',')
 959                     continue;
 960
 961                 len = (next ? ((size_t)(next-str)) : strlen(str));
 962                 while(len > 0 && isspace(str[len-1]))
 963                     len--;
 964                 if(len == 3 && strncasecmp(str, "sse", len) == 0)
 965                     capfilter &= ~CPU_CAP_SSE;
 966                 else if(len == 4 && strncasecmp(str, "sse2", len) == 0)
 967                     capfilter &= ~CPU_CAP_SSE2;
 968                 else if(len == 4 && strncasecmp(str, "sse3", len) == 0)
 969                     capfilter &= ~CPU_CAP_SSE3;
 970                 else if(len == 6 && strncasecmp(str, "sse4.1", len) == 0)
 971                     capfilter &= ~CPU_CAP_SSE4_1;
 972                 else if(len == 4 && strncasecmp(str, "neon", len) == 0)
 973                     capfilter &= ~CPU_CAP_NEON;
 974                 else
 975                     WARN("Invalid CPU extension \"%s\"\n", str);
 976             } while(next++);
 977         }
 978     }
 979     FillCPUCaps(capfilter);
 980
 981 #ifdef _WIN32
 982     RTPrioLevel = 1;
 983 #else
 984     RTPrioLevel = 0;
 985 #endif
 986     ConfigValueInt(NULL, NULL, "rt-prio", &RTPrioLevel);
 987
 988     aluInitMixer();
 989
 990     str = getenv("ALSOFT_TRAP_ERROR");
 991     if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
 992     {
 993         TrapALError  = AL_TRUE;
 994         TrapALCError = AL_TRUE;
 995     }
 996     else
 997     {
 998         str = getenv("ALSOFT_TRAP_AL_ERROR");
 999         if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
1000             TrapALError = AL_TRUE;
1001         TrapALError = GetConfigValueBool(NULL, NULL, "trap-al-error", TrapALError);
1002
1003         str = getenv("ALSOFT_TRAP_ALC_ERROR");
1004         if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
1005             TrapALCError = ALC_TRUE;
1006         TrapALCError = GetConfigValueBool(NULL, NULL, "trap-alc-error", TrapALCError);
1007     }
1008
1009     if(ConfigValueFloat(NULL, "reverb", "boost", &valf))
1010         ReverbBoost *= powf(10.0f, valf / 20.0f);
1011
1012     EmulateEAXReverb = GetConfigValueBool(NULL, "reverb", "emulate-eax", AL_FALSE);
1013
1014     if(((devs=getenv("ALSOFT_DRIVERS")) && devs[0]) ||
1015        ConfigValueStr(NULL, NULL, "drivers", &devs))
1016     {
1017         int n;
1018         size_t len;
1019         const char *next = devs;
1020         int endlist, delitem;
1021
1022         i = 0;
1023         do {
1024             devs = next;
1025             while(isspace(devs[0]))
1026                 devs++;
1027             next = strchr(devs, ',');
1028
1029             delitem = (devs[0] == '-');
1030             if(devs[0] == '-') devs++;
1031
1032             if(!devs[0] || devs[0] == ',')
1033             {
1034                 endlist = 0;
1035                 continue;
1036             }
1037             endlist = 1;
1038
1039             len = (next ? ((size_t)(next-devs)) : strlen(devs));
1040             while(len > 0 && isspace(devs[len-1]))
1041                 len--;
1042             for(n = i;BackendList[n].name;n++)
1043             {
1044                 if(len == strlen(BackendList[n].name) &&
1045                    strncmp(BackendList[n].name, devs, len) == 0)
1046                 {
1047                     if(delitem)
1048                     {
1049                         do {
1050                             BackendList[n] = BackendList[n+1];
1051                             ++n;
1052                         } while(BackendList[n].name);
1053                     }
1054                     else
1055                     {
1056                         struct BackendInfo Bkp = BackendList[n];
1057                         while(n > i)
1058                         {
1059                             BackendList[n] = BackendList[n-1];
1060                             --n;
1061                         }
1062                         BackendList[n] = Bkp;
1063
1064                         i++;
1065                     }
1066                     break;
1067                 }
1068             }
1069         } while(next++);
1070
1071         if(endlist)
1072         {
1073             BackendList[i].name = NULL;
1074             BackendList[i].getFactory = NULL;
1075             BackendList[i].Init = NULL;
1076             BackendList[i].Deinit = NULL;
1077             BackendList[i].Probe = NULL;
1078         }
1079     }
1080
1081     for(i = 0;(BackendList[i].Init || BackendList[i].getFactory) && (!PlaybackBackend.name || !CaptureBackend.name);i++)
1082     {
1083         if(BackendList[i].getFactory)
1084         {
1085             ALCbackendFactory *factory = BackendList[i].getFactory();
1086             if(!V0(factory,init)())
1087             {
1088                 WARN("Failed to initialize backend \"%s\"\n", BackendList[i].name);
1089                 continue;
1090             }
1091
1092             TRACE("Initialized backend \"%s\"\n", BackendList[i].name);
1093             if(!PlaybackBackend.name && V(factory,querySupport)(ALCbackend_Playback))
1094             {
1095                 PlaybackBackend = BackendList[i];
1096                 TRACE("Added \"%s\" for playback\n", PlaybackBackend.name);
1097             }
1098             if(!CaptureBackend.name && V(factory,querySupport)(ALCbackend_Capture))
1099             {
1100                 CaptureBackend = BackendList[i];
1101                 TRACE("Added \"%s\" for capture\n", CaptureBackend.name);
1102             }
1103
1104             continue;
1105         }
1106
1107         if(!BackendList[i].Init(&BackendList[i].Funcs))
1108         {
1109             WARN("Failed to initialize backend \"%s\"\n", BackendList[i].name);
1110             continue;
1111         }
1112
1113         TRACE("Initialized backend \"%s\"\n", BackendList[i].name);
1114         if(BackendList[i].Funcs.OpenPlayback && !PlaybackBackend.name)
1115         {
1116             PlaybackBackend = BackendList[i];
1117             TRACE("Added \"%s\" for playback\n", PlaybackBackend.name);
1118         }
1119         if(BackendList[i].Funcs.OpenCapture && !CaptureBackend.name)
1120         {
1121             CaptureBackend = BackendList[i];
1122             TRACE("Added \"%s\" for capture\n", CaptureBackend.name);
1123         }
1124     }
1125     {
1126         ALCbackendFactory *factory = ALCloopbackFactory_getFactory();
1127         V0(factory,init)();
1128     }
1129
1130     if(!PlaybackBackend.name)
1131         WARN("No playback backend available!\n");
1132     if(!CaptureBackend.name)
1133         WARN("No capture backend available!\n");
1134
1135     if(ConfigValueStr(NULL, NULL, "excludefx", &str))
1136     {
1137         size_t len;
1138         const char *next = str;
1139
1140         do {
1141             str = next;
1142             next = strchr(str, ',');
1143
1144             if(!str[0] || next == str)
1145                 continue;
1146
1147             len = (next ? ((size_t)(next-str)) : strlen(str));
1148             for(n = 0;EffectList[n].name;n++)
1149             {
1150                 if(len == strlen(EffectList[n].name) &&
1151                    strncmp(EffectList[n].name, str, len) == 0)
1152                     DisabledEffects[EffectList[n].type] = AL_TRUE;
1153             }
1154         } while(next++);
1155     }
1156
1157     InitEffectFactoryMap();
1158
1159     InitEffect(&DefaultEffect);
1160     str = getenv("ALSOFT_DEFAULT_REVERB");
1161     if((str && str[0]) || ConfigValueStr(NULL, NULL, "default-reverb", &str))
1162         LoadReverbPreset(str, &DefaultEffect);
1163 }
1164 #define DO_INITCONFIG() alcall_once(&alc_config_once, alc_initconfig)
1165
1166
1167 /************************************************
1168  * Library deinitialization
1169  ************************************************/
1170 static void alc_cleanup(void)
1171 {
1172     ALCdevice *dev;
1173
1174     AL_STRING_DEINIT(alcAllDevicesList);
1175     AL_STRING_DEINIT(alcCaptureDeviceList);
1176
1177     free(alcDefaultAllDevicesSpecifier);
1178     alcDefaultAllDevicesSpecifier = NULL;
1179     free(alcCaptureDefaultDeviceSpecifier);
1180     alcCaptureDefaultDeviceSpecifier = NULL;
1181
1182     if((dev=ATOMIC_EXCHANGE(ALCdevice*, &DeviceList, NULL)) != NULL)
1183     {
1184         ALCuint num = 0;
1185         do {
1186             num++;
1187         } while((dev=dev->next) != NULL);
1188         ERR("%u device%s not closed\n", num, (num>1)?"s":"");
1189     }
1190
1191     DeinitEffectFactoryMap();
1192 }
1193
1194 static void alc_deinit_safe(void)
1195 {
1196     alc_cleanup();
1197
1198     FreeHrtfs();
1199     FreeALConfig();
1200
1201     ThunkExit();
1202     almtx_destroy(&ListLock);
1203     altss_delete(LocalContext);
1204
1205     if(LogFile != stderr)
1206         fclose(LogFile);
1207     LogFile = NULL;
1208 }
1209
1210 static void alc_deinit(void)
1211 {
1212     int i;
1213
1214     alc_cleanup();
1215
1216     memset(&PlaybackBackend, 0, sizeof(PlaybackBackend));
1217     memset(&CaptureBackend, 0, sizeof(CaptureBackend));
1218
1219     for(i = 0;BackendList[i].Deinit || BackendList[i].getFactory;i++)
1220     {
1221         if(!BackendList[i].getFactory)
1222             BackendList[i].Deinit();
1223         else
1224         {
1225             ALCbackendFactory *factory = BackendList[i].getFactory();
1226             V0(factory,deinit)();
1227         }
1228     }
1229     {
1230         ALCbackendFactory *factory = ALCloopbackFactory_getFactory();
1231         V0(factory,deinit)();
1232     }
1233
1234     alc_deinit_safe();
1235 }
1236
1237
1238 /************************************************
1239  * Device enumeration
1240  ************************************************/
1241 static void ProbeDevices(al_string *list, struct BackendInfo *backendinfo, enum DevProbe type)
1242 {
1243     DO_INITCONFIG();
1244
1245     LockLists();
1246     al_string_clear(list);
1247
1248     if(backendinfo->Probe)
1249         backendinfo->Probe(type);
1250     else if(backendinfo->getFactory)
1251     {
1252         ALCbackendFactory *factory = backendinfo->getFactory();
1253         V(factory,probe)(type);
1254     }
1255
1256     UnlockLists();
1257 }
1258 static void ProbeAllDevicesList(void)
1259 { ProbeDevices(&alcAllDevicesList, &PlaybackBackend, ALL_DEVICE_PROBE); }
1260 static void ProbeCaptureDeviceList(void)
1261 { ProbeDevices(&alcCaptureDeviceList, &CaptureBackend, CAPTURE_DEVICE_PROBE); }
1262
1263 static void AppendDevice(const ALCchar *name, al_string *devnames)
1264 {
1265     size_t len = strlen(name);
1266     if(len > 0)
1267         al_string_append_range(devnames, name, name+len+1);
1268 }
1269 void AppendAllDevicesList(const ALCchar *name)
1270 { AppendDevice(name, &alcAllDevicesList); }
1271 void AppendCaptureDeviceList(const ALCchar *name)
1272 { AppendDevice(name, &alcCaptureDeviceList); }
1273
1274
1275 /************************************************
1276  * Device format information
1277  ************************************************/
1278 const ALCchar *DevFmtTypeString(enum DevFmtType type)
1279 {
1280     switch(type)
1281     {
1282     case DevFmtByte: return "Signed Byte";
1283     case DevFmtUByte: return "Unsigned Byte";
1284     case DevFmtShort: return "Signed Short";
1285     case DevFmtUShort: return "Unsigned Short";
1286     case DevFmtInt: return "Signed Int";
1287     case DevFmtUInt: return "Unsigned Int";
1288     case DevFmtFloat: return "Float";
1289     }
1290     return "(unknown type)";
1291 }
1292 const ALCchar *DevFmtChannelsString(enum DevFmtChannels chans)
1293 {
1294     switch(chans)
1295     {
1296     case DevFmtMono: return "Mono";
1297     case DevFmtStereo: return "Stereo";
1298     case DevFmtQuad: return "Quadraphonic";
1299     case DevFmtX51: return "5.1 Surround";
1300     case DevFmtX51Rear: return "5.1 Surround (Rear)";
1301     case DevFmtX61: return "6.1 Surround";
1302     case DevFmtX71: return "7.1 Surround";
1303     case DevFmtBFormat3D: return "B-Format 3D";
1304     }
1305     return "(unknown channels)";
1306 }
1307
1308 extern inline ALuint FrameSizeFromDevFmt(enum DevFmtChannels chans, enum DevFmtType type);
1309 ALuint BytesFromDevFmt(enum DevFmtType type)
1310 {
1311     switch(type)
1312     {
1313     case DevFmtByte: return sizeof(ALbyte);
1314     case DevFmtUByte: return sizeof(ALubyte);
1315     case DevFmtShort: return sizeof(ALshort);
1316     case DevFmtUShort: return sizeof(ALushort);
1317     case DevFmtInt: return sizeof(ALint);
1318     case DevFmtUInt: return sizeof(ALuint);
1319     case DevFmtFloat: return sizeof(ALfloat);
1320     }
1321     return 0;
1322 }
1323 ALuint ChannelsFromDevFmt(enum DevFmtChannels chans)
1324 {
1325     switch(chans)
1326     {
1327     case DevFmtMono: return 1;
1328     case DevFmtStereo: return 2;
1329     case DevFmtQuad: return 4;
1330     case DevFmtX51: return 6;
1331     case DevFmtX51Rear: return 6;
1332     case DevFmtX61: return 7;
1333     case DevFmtX71: return 8;
1334     case DevFmtBFormat3D: return 4;
1335     }
1336     return 0;
1337 }
1338
1339 DECL_CONST static ALboolean DecomposeDevFormat(ALenum format,
1340   enum DevFmtChannels *chans, enum DevFmtType *type)
1341 {
1342     static const struct {
1343         ALenum format;
1344         enum DevFmtChannels channels;
1345         enum DevFmtType type;
1346     } list[] = {
1347         { AL_FORMAT_MONO8,        DevFmtMono, DevFmtUByte },
1348         { AL_FORMAT_MONO16,       DevFmtMono, DevFmtShort },
1349         { AL_FORMAT_MONO_FLOAT32, DevFmtMono, DevFmtFloat },
1350
1351         { AL_FORMAT_STEREO8,        DevFmtStereo, DevFmtUByte },
1352         { AL_FORMAT_STEREO16,       DevFmtStereo, DevFmtShort },
1353         { AL_FORMAT_STEREO_FLOAT32, DevFmtStereo, DevFmtFloat },
1354
1355         { AL_FORMAT_QUAD8,  DevFmtQuad, DevFmtUByte },
1356         { AL_FORMAT_QUAD16, DevFmtQuad, DevFmtShort },
1357         { AL_FORMAT_QUAD32, DevFmtQuad, DevFmtFloat },
1358
1359         { AL_FORMAT_51CHN8,  DevFmtX51, DevFmtUByte },
1360         { AL_FORMAT_51CHN16, DevFmtX51, DevFmtShort },
1361         { AL_FORMAT_51CHN32, DevFmtX51, DevFmtFloat },
1362
1363         { AL_FORMAT_61CHN8,  DevFmtX61, DevFmtUByte },
1364         { AL_FORMAT_61CHN16, DevFmtX61, DevFmtShort },
1365         { AL_FORMAT_61CHN32, DevFmtX61, DevFmtFloat },
1366
1367         { AL_FORMAT_71CHN8,  DevFmtX71, DevFmtUByte },
1368         { AL_FORMAT_71CHN16, DevFmtX71, DevFmtShort },
1369         { AL_FORMAT_71CHN32, DevFmtX71, DevFmtFloat },
1370     };
1371     ALuint i;
1372
1373     for(i = 0;i < COUNTOF(list);i++)
1374     {
1375         if(list[i].format == format)
1376         {
1377             *chans = list[i].channels;
1378             *type  = list[i].type;
1379             return AL_TRUE;
1380         }
1381     }
1382
1383     return AL_FALSE;
1384 }
1385
1386 DECL_CONST static ALCboolean IsValidALCType(ALCenum type)
1387 {
1388     switch(type)
1389     {
1390         case ALC_BYTE_SOFT:
1391         case ALC_UNSIGNED_BYTE_SOFT:
1392         case ALC_SHORT_SOFT:
1393         case ALC_UNSIGNED_SHORT_SOFT:
1394         case ALC_INT_SOFT:
1395         case ALC_UNSIGNED_INT_SOFT:
1396         case ALC_FLOAT_SOFT:
1397             return ALC_TRUE;
1398     }
1399     return ALC_FALSE;
1400 }
1401
1402 DECL_CONST static ALCboolean IsValidALCChannels(ALCenum channels)
1403 {
1404     switch(channels)
1405     {
1406         case ALC_MONO_SOFT:
1407         case ALC_STEREO_SOFT:
1408         case ALC_QUAD_SOFT:
1409         case ALC_5POINT1_SOFT:
1410         case ALC_6POINT1_SOFT:
1411         case ALC_7POINT1_SOFT:
1412             return ALC_TRUE;
1413     }
1414     return ALC_FALSE;
1415 }
1416
1417
1418 /************************************************
1419  * Miscellaneous ALC helpers
1420  ************************************************/
1421
1422 extern inline void LockContext(ALCcontext *context);
1423 extern inline void UnlockContext(ALCcontext *context);
1424
1425 void ALCdevice_Lock(ALCdevice *device)
1426 {
1427     V0(device->Backend,lock)();
1428 }
1429
1430 void ALCdevice_Unlock(ALCdevice *device)
1431 {
1432     V0(device->Backend,unlock)();
1433 }
1434
1435
1436 /* SetDefaultWFXChannelOrder
1437  *
1438  * Sets the default channel order used by WaveFormatEx.
1439  */
1440 void SetDefaultWFXChannelOrder(ALCdevice *device)
1441 {
1442     ALuint i;
1443
1444     for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
1445         device->RealOut.ChannelName[i] = InvalidChannel;
1446
1447     switch(device->FmtChans)
1448     {
1449     case DevFmtMono:
1450         device->RealOut.ChannelName[0] = FrontCenter;
1451         break;
1452     case DevFmtStereo:
1453         device->RealOut.ChannelName[0] = FrontLeft;
1454         device->RealOut.ChannelName[1] = FrontRight;
1455         break;
1456     case DevFmtQuad:
1457         device->RealOut.ChannelName[0] = FrontLeft;
1458         device->RealOut.ChannelName[1] = FrontRight;
1459         device->RealOut.ChannelName[2] = BackLeft;
1460         device->RealOut.ChannelName[3] = BackRight;
1461         break;
1462     case DevFmtX51:
1463         device->RealOut.ChannelName[0] = FrontLeft;
1464         device->RealOut.ChannelName[1] = FrontRight;
1465         device->RealOut.ChannelName[2] = FrontCenter;
1466         device->RealOut.ChannelName[3] = LFE;
1467         device->RealOut.ChannelName[4] = SideLeft;
1468         device->RealOut.ChannelName[5] = SideRight;
1469         break;
1470     case DevFmtX51Rear:
1471         device->RealOut.ChannelName[0] = FrontLeft;
1472         device->RealOut.ChannelName[1] = FrontRight;
1473         device->RealOut.ChannelName[2] = FrontCenter;
1474         device->RealOut.ChannelName[3] = LFE;
1475         device->RealOut.ChannelName[4] = BackLeft;
1476         device->RealOut.ChannelName[5] = BackRight;
1477         break;
1478     case DevFmtX61:
1479         device->RealOut.ChannelName[0] = FrontLeft;
1480         device->RealOut.ChannelName[1] = FrontRight;
1481         device->RealOut.ChannelName[2] = FrontCenter;
1482         device->RealOut.ChannelName[3] = LFE;
1483         device->RealOut.ChannelName[4] = BackCenter;
1484         device->RealOut.ChannelName[5] = SideLeft;
1485         device->RealOut.ChannelName[6] = SideRight;
1486         break;
1487     case DevFmtX71:
1488         device->RealOut.ChannelName[0] = FrontLeft;
1489         device->RealOut.ChannelName[1] = FrontRight;
1490         device->RealOut.ChannelName[2] = FrontCenter;
1491         device->RealOut.ChannelName[3] = LFE;
1492         device->RealOut.ChannelName[4] = BackLeft;
1493         device->RealOut.ChannelName[5] = BackRight;
1494         device->RealOut.ChannelName[6] = SideLeft;
1495         device->RealOut.ChannelName[7] = SideRight;
1496         break;
1497     case DevFmtBFormat3D:
1498         device->RealOut.ChannelName[0] = Aux0;
1499         device->RealOut.ChannelName[1] = Aux1;
1500         device->RealOut.ChannelName[2] = Aux2;
1501         device->RealOut.ChannelName[3] = Aux3;
1502         break;
1503     }
1504 }
1505
1506 /* SetDefaultChannelOrder
1507  *
1508  * Sets the default channel order used by most non-WaveFormatEx-based APIs.
1509  */
1510 void SetDefaultChannelOrder(ALCdevice *device)
1511 {
1512     ALuint i;
1513
1514     for(i = 0;i < MAX_OUTPUT_CHANNELS;i++)
1515         device->RealOut.ChannelName[i] = InvalidChannel;
1516
1517     switch(device->FmtChans)
1518     {
1519     case DevFmtX51Rear:
1520         device->RealOut.ChannelName[0] = FrontLeft;
1521         device->RealOut.ChannelName[1] = FrontRight;
1522         device->RealOut.ChannelName[2] = BackLeft;
1523         device->RealOut.ChannelName[3] = BackRight;
1524         device->RealOut.ChannelName[4] = FrontCenter;
1525         device->RealOut.ChannelName[5] = LFE;
1526         return;
1527     case DevFmtX71:
1528         device->RealOut.ChannelName[0] = FrontLeft;
1529         device->RealOut.ChannelName[1] = FrontRight;
1530         device->RealOut.ChannelName[2] = BackLeft;
1531         device->RealOut.ChannelName[3] = BackRight;
1532         device->RealOut.ChannelName[4] = FrontCenter;
1533         device->RealOut.ChannelName[5] = LFE;
1534         device->RealOut.ChannelName[6] = SideLeft;
1535         device->RealOut.ChannelName[7] = SideRight;
1536         return;
1537
1538     /* Same as WFX order */
1539     case DevFmtMono:
1540     case DevFmtStereo:
1541     case DevFmtQuad:
1542     case DevFmtX51:
1543     case DevFmtX61:
1544     case DevFmtBFormat3D:
1545         SetDefaultWFXChannelOrder(device);
1546         break;
1547     }
1548 }
1549
1550 extern inline ALint GetChannelIndex(const enum Channel names[MAX_OUTPUT_CHANNELS], enum Channel chan);
1551
1552
1553 /* ALCcontext_DeferUpdates
1554  *
1555  * Defers/suspends updates for the given context's listener and sources. This
1556  * does *NOT* stop mixing, but rather prevents certain property changes from
1557  * taking effect.
1558  */
1559 void ALCcontext_DeferUpdates(ALCcontext *context)
1560 {
1561     ATOMIC_STORE(&context->DeferUpdates, AL_TRUE);
1562 }
1563
1564 /* ALCcontext_ProcessUpdates
1565  *
1566  * Resumes update processing after being deferred.
1567  */
1568 void ALCcontext_ProcessUpdates(ALCcontext *context)
1569 {
1570     ALCdevice *device = context->Device;
1571
1572     ReadLock(&context->PropLock);
1573     if(ATOMIC_EXCHANGE(ALenum, &context->DeferUpdates, AL_FALSE))
1574     {
1575         ALsizei pos;
1576
1577         UpdateListenerProps(context);
1578
1579         LockUIntMapRead(&context->SourceMap);
1580         V0(device->Backend,lock)();
1581         for(pos = 0;pos < context->SourceMap.size;pos++)
1582         {
1583             ALsource *Source = context->SourceMap.array[pos].value;
1584             ALenum new_state;
1585
1586             if((Source->state == AL_PLAYING || Source->state == AL_PAUSED) &&
1587                Source->OffsetType != AL_NONE)
1588             {
1589                 WriteLock(&Source->queue_lock);
1590                 ApplyOffset(Source);
1591                 WriteUnlock(&Source->queue_lock);
1592             }
1593
1594             new_state = Source->new_state;
1595             Source->new_state = AL_NONE;
1596             if(new_state)
1597                 SetSourceState(Source, context, new_state);
1598         }
1599         V0(device->Backend,unlock)();
1600         UnlockUIntMapRead(&context->SourceMap);
1601         UpdateAllSourceProps(context);
1602     }
1603     ReadUnlock(&context->PropLock);
1604 }
1605
1606
1607 /* alcSetError
1608  *
1609  * Stores the latest ALC device error
1610  */
1611 static void alcSetError(ALCdevice *device, ALCenum errorCode)
1612 {
1613     if(TrapALCError)
1614     {
1615 #ifdef _WIN32
1616         /* DebugBreak() will cause an exception if there is no debugger */
1617         if(IsDebuggerPresent())
1618             DebugBreak();
1619 #elif defined(SIGTRAP)
1620         raise(SIGTRAP);
1621 #endif
1622     }
1623
1624     if(device)
1625         ATOMIC_STORE(&device->LastError, errorCode);
1626     else
1627         ATOMIC_STORE(&LastNullDeviceError, errorCode);
1628 }
1629
1630
1631 /* UpdateClockBase
1632  *
1633  * Updates the device's base clock time with however many samples have been
1634  * done. This is used so frequency changes on the device don't cause the time
1635  * to jump forward or back.
1636  */
1637 static inline void UpdateClockBase(ALCdevice *device)
1638 {
1639     device->ClockBase += device->SamplesDone * DEVICE_CLOCK_RES / device->Frequency;
1640     device->SamplesDone = 0;
1641 }
1642
1643 /* UpdateDeviceParams
1644  *
1645  * Updates device parameters according to the attribute list (caller is
1646  * responsible for holding the list lock).
1647  */
1648 static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
1649 {
1650     ALCcontext *context;
1651     enum HrtfRequestMode hrtf_appreq = Hrtf_Default;
1652     enum HrtfRequestMode hrtf_userreq = Hrtf_Default;
1653     enum DevFmtChannels oldChans;
1654     enum DevFmtType oldType;
1655     ALCuint oldFreq;
1656     FPUCtl oldMode;
1657     ALCsizei hrtf_id = -1;
1658     size_t size;
1659
1660     // Check for attributes
1661     if(device->Type == Loopback)
1662     {
1663         enum {
1664             GotFreq  = 1<<0,
1665             GotChans = 1<<1,
1666             GotType  = 1<<2,
1667             GotAll   = GotFreq|GotChans|GotType
1668         };
1669         ALCuint freq, numMono, numStereo, numSends;
1670         enum DevFmtChannels schans;
1671         enum DevFmtType stype;
1672         ALCuint attrIdx = 0;
1673         ALCint gotFmt = 0;
1674
1675         if(!attrList)
1676         {
1677             WARN("Missing attributes for loopback device\n");
1678             return ALC_INVALID_VALUE;
1679         }
1680
1681         numMono = device->NumMonoSources;
1682         numStereo = device->NumStereoSources;
1683         numSends = device->NumAuxSends;
1684         schans = device->FmtChans;
1685         stype = device->FmtType;
1686         freq = device->Frequency;
1687
1688 #define TRACE_ATTR(a, v) TRACE("Loopback %s = %d\n", #a, v)
1689         while(attrList[attrIdx])
1690         {
1691             if(attrList[attrIdx] == ALC_FORMAT_CHANNELS_SOFT)
1692             {
1693                 ALCint val = attrList[attrIdx + 1];
1694                 TRACE_ATTR(ALC_FORMAT_CHANNELS_SOFT, val);
1695                 if(!IsValidALCChannels(val) || !ChannelsFromDevFmt(val))
1696                     return ALC_INVALID_VALUE;
1697                 schans = val;
1698                 gotFmt |= GotChans;
1699             }
1700
1701             if(attrList[attrIdx] == ALC_FORMAT_TYPE_SOFT)
1702             {
1703                 ALCint val = attrList[attrIdx + 1];
1704                 TRACE_ATTR(ALC_FORMAT_TYPE_SOFT, val);
1705                 if(!IsValidALCType(val) || !BytesFromDevFmt(val))
1706                     return ALC_INVALID_VALUE;
1707                 stype = val;
1708                 gotFmt |= GotType;
1709             }
1710
1711             if(attrList[attrIdx] == ALC_FREQUENCY)
1712             {
1713                 freq = attrList[attrIdx + 1];
1714                 TRACE_ATTR(ALC_FREQUENCY, freq);
1715                 if(freq < MIN_OUTPUT_RATE)
1716                     return ALC_INVALID_VALUE;
1717                 gotFmt |= GotFreq;
1718             }
1719
1720             if(attrList[attrIdx] == ALC_STEREO_SOURCES)
1721             {
1722                 numStereo = attrList[attrIdx + 1];
1723                 TRACE_ATTR(ALC_STEREO_SOURCES, numStereo);
1724                 if(numStereo > device->MaxNoOfSources)
1725                     numStereo = device->MaxNoOfSources;
1726
1727                 numMono = device->MaxNoOfSources - numStereo;
1728             }
1729
1730             if(attrList[attrIdx] == ALC_MAX_AUXILIARY_SENDS)
1731             {
1732                 numSends = attrList[attrIdx + 1];
1733                 TRACE_ATTR(ALC_MAX_AUXILIARY_SENDS, numSends);
1734             }
1735
1736             if(attrList[attrIdx] == ALC_HRTF_SOFT)
1737             {
1738                 TRACE_ATTR(ALC_HRTF_SOFT, attrList[attrIdx + 1]);
1739                 if(attrList[attrIdx + 1] == ALC_FALSE)
1740                     hrtf_appreq = Hrtf_Disable;
1741                 else if(attrList[attrIdx + 1] == ALC_TRUE)
1742                     hrtf_appreq = Hrtf_Enable;
1743                 else
1744                     hrtf_appreq = Hrtf_Default;
1745             }
1746
1747             if(attrList[attrIdx] == ALC_HRTF_ID_SOFT)
1748             {
1749                 hrtf_id = attrList[attrIdx + 1];
1750                 TRACE_ATTR(ALC_HRTF_ID_SOFT, hrtf_id);
1751             }
1752
1753             attrIdx += 2;
1754         }
1755 #undef TRACE_ATTR
1756
1757         if(gotFmt != GotAll)
1758         {
1759             WARN("Missing format for loopback device\n");
1760             return ALC_INVALID_VALUE;
1761         }
1762
1763         ConfigValueUInt(NULL, NULL, "sends", &numSends);
1764         numSends = minu(MAX_SENDS, numSends);
1765
1766         if((device->Flags&DEVICE_RUNNING))
1767             V0(device->Backend,stop)();
1768         device->Flags &= ~DEVICE_RUNNING;
1769
1770         UpdateClockBase(device);
1771
1772         device->Frequency = freq;
1773         device->FmtChans = schans;
1774         device->FmtType = stype;
1775         device->NumMonoSources = numMono;
1776         device->NumStereoSources = numStereo;
1777         device->NumAuxSends = numSends;
1778     }
1779     else if(attrList && attrList[0])
1780     {
1781         ALCuint freq, numMono, numStereo, numSends;
1782         ALCuint attrIdx = 0;
1783
1784         /* If a context is already running on the device, stop playback so the
1785          * device attributes can be updated. */
1786         if((device->Flags&DEVICE_RUNNING))
1787             V0(device->Backend,stop)();
1788         device->Flags &= ~DEVICE_RUNNING;
1789
1790         freq = device->Frequency;
1791         numMono = device->NumMonoSources;
1792         numStereo = device->NumStereoSources;
1793         numSends = device->NumAuxSends;
1794
1795 #define TRACE_ATTR(a, v) TRACE("%s = %d\n", #a, v)
1796         while(attrList[attrIdx])
1797         {
1798             if(attrList[attrIdx] == ALC_FREQUENCY)
1799             {
1800                 freq = attrList[attrIdx + 1];
1801                 device->Flags |= DEVICE_FREQUENCY_REQUEST;
1802                 TRACE_ATTR(ALC_FREQUENCY, freq);
1803             }
1804
1805             if(attrList[attrIdx] == ALC_STEREO_SOURCES)
1806             {
1807                 numStereo = attrList[attrIdx + 1];
1808                 TRACE_ATTR(ALC_STEREO_SOURCES, numStereo);
1809                 if(numStereo > device->MaxNoOfSources)
1810                     numStereo = device->MaxNoOfSources;
1811
1812                 numMono = device->MaxNoOfSources - numStereo;
1813             }
1814
1815             if(attrList[attrIdx] == ALC_MAX_AUXILIARY_SENDS)
1816             {
1817                 numSends = attrList[attrIdx + 1];
1818                 TRACE_ATTR(ALC_MAX_AUXILIARY_SENDS, numSends);
1819             }
1820
1821             if(attrList[attrIdx] == ALC_HRTF_SOFT)
1822             {
1823                 TRACE_ATTR(ALC_HRTF_SOFT, attrList[attrIdx + 1]);
1824                 if(attrList[attrIdx + 1] == ALC_FALSE)
1825                     hrtf_appreq = Hrtf_Disable;
1826                 else if(attrList[attrIdx + 1] == ALC_TRUE)
1827                     hrtf_appreq = Hrtf_Enable;
1828                 else
1829                     hrtf_appreq = Hrtf_Default;
1830             }
1831
1832             if(attrList[attrIdx] == ALC_HRTF_ID_SOFT)
1833             {
1834                 hrtf_id = attrList[attrIdx + 1];
1835                 TRACE_ATTR(ALC_HRTF_ID_SOFT, hrtf_id);
1836             }
1837
1838             attrIdx += 2;
1839         }
1840 #undef TRACE_ATTR
1841
1842         ConfigValueUInt(al_string_get_cstr(device->DeviceName), NULL, "frequency", &freq);
1843         freq = maxu(freq, MIN_OUTPUT_RATE);
1844
1845         ConfigValueUInt(al_string_get_cstr(device->DeviceName), NULL, "sends", &numSends);
1846         numSends = minu(MAX_SENDS, numSends);
1847
1848         UpdateClockBase(device);
1849
1850         device->UpdateSize = (ALuint64)device->UpdateSize * freq /
1851                              device->Frequency;
1852         /* SSE and Neon do best with the update size being a multiple of 4 */
1853         if((CPUCapFlags&(CPU_CAP_SSE|CPU_CAP_NEON)) != 0)
1854             device->UpdateSize = (device->UpdateSize+3)&~3;
1855
1856         device->Frequency = freq;
1857         device->NumMonoSources = numMono;
1858         device->NumStereoSources = numStereo;
1859         device->NumAuxSends = numSends;
1860     }
1861
1862     if((device->Flags&DEVICE_RUNNING))
1863         return ALC_NO_ERROR;
1864
1865     al_free(device->Uhj_Encoder);
1866     device->Uhj_Encoder = NULL;
1867
1868     al_free(device->Bs2b);
1869     device->Bs2b = NULL;
1870
1871     al_free(device->Dry.Buffer);
1872     device->Dry.Buffer = NULL;
1873     device->Dry.NumChannels = 0;
1874     device->VirtOut.Buffer = NULL;
1875     device->VirtOut.NumChannels = 0;
1876     device->RealOut.Buffer = NULL;
1877     device->RealOut.NumChannels = 0;
1878
1879     UpdateClockBase(device);
1880
1881     /*************************************************************************
1882      * Update device format request if HRTF is requested
1883      */
1884     device->Hrtf_Status = ALC_HRTF_DISABLED_SOFT;
1885     if(device->Type != Loopback)
1886     {
1887         const char *hrtf;
1888         if(ConfigValueStr(al_string_get_cstr(device->DeviceName), NULL, "hrtf", &hrtf))
1889         {
1890             if(strcasecmp(hrtf, "true") == 0)
1891                 hrtf_userreq = Hrtf_Enable;
1892             else if(strcasecmp(hrtf, "false") == 0)
1893                 hrtf_userreq = Hrtf_Disable;
1894             else if(strcasecmp(hrtf, "auto") != 0)
1895                 ERR("Unexpected hrtf value: %s\n", hrtf);
1896         }
1897
1898         if(hrtf_userreq == Hrtf_Enable || (hrtf_userreq != Hrtf_Disable && hrtf_appreq == Hrtf_Enable))
1899         {
1900             if(VECTOR_SIZE(device->Hrtf_List) == 0)
1901             {
1902                 VECTOR_DEINIT(device->Hrtf_List);
1903                 device->Hrtf_List = EnumerateHrtf(device->DeviceName);
1904             }
1905             if(VECTOR_SIZE(device->Hrtf_List) > 0)
1906             {
1907                 device->FmtChans = DevFmtStereo;
1908                 if(hrtf_id >= 0 && (size_t)hrtf_id < VECTOR_SIZE(device->Hrtf_List))
1909                     device->Frequency = GetHrtfSampleRate(VECTOR_ELEM(device->Hrtf_List, hrtf_id).hrtf);
1910                 else
1911                     device->Frequency = GetHrtfSampleRate(VECTOR_ELEM(device->Hrtf_List, 0).hrtf);
1912                 device->Flags |= DEVICE_CHANNELS_REQUEST | DEVICE_FREQUENCY_REQUEST;
1913             }
1914             else
1915             {
1916                 hrtf_userreq = Hrtf_Default;
1917                 hrtf_appreq = Hrtf_Disable;
1918                 device->Hrtf_Status = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
1919             }
1920         }
1921     }
1922     else if(hrtf_appreq == Hrtf_Enable)
1923     {
1924         size_t i = VECTOR_SIZE(device->Hrtf_List);
1925         /* Loopback device. We don't need to match to a specific HRTF entry
1926          * here. If the requested ID matches, we'll pick that later, if not,
1927          * we'll try to auto-select one anyway. Just make sure one exists
1928          * that'll work.
1929          */
1930         if(device->FmtChans == DevFmtStereo)
1931         {
1932             if(VECTOR_SIZE(device->Hrtf_List) == 0)
1933             {
1934                 VECTOR_DEINIT(device->Hrtf_List);
1935                 device->Hrtf_List = EnumerateHrtf(device->DeviceName);
1936             }
1937             for(i = 0;i < VECTOR_SIZE(device->Hrtf_List);i++)
1938             {
1939                 const struct Hrtf *hrtf = VECTOR_ELEM(device->Hrtf_List, i).hrtf;
1940                 if(GetHrtfSampleRate(hrtf) == device->Frequency)
1941                     break;
1942             }
1943         }
1944         if(i == VECTOR_SIZE(device->Hrtf_List))
1945         {
1946             ERR("Requested format not HRTF compatible: %s, %uhz\n",
1947                 DevFmtChannelsString(device->FmtChans), device->Frequency);
1948             hrtf_appreq = Hrtf_Disable;
1949             device->Hrtf_Status = ALC_HRTF_UNSUPPORTED_FORMAT_SOFT;
1950         }
1951     }
1952
1953     oldFreq  = device->Frequency;
1954     oldChans = device->FmtChans;
1955     oldType  = device->FmtType;
1956
1957     TRACE("Pre-reset: %s%s, %s%s, %s%uhz, %u update size x%d\n",
1958         (device->Flags&DEVICE_CHANNELS_REQUEST)?"*":"", DevFmtChannelsString(device->FmtChans),
1959         (device->Flags&DEVICE_SAMPLE_TYPE_REQUEST)?"*":"", DevFmtTypeString(device->FmtType),
1960         (device->Flags&DEVICE_FREQUENCY_REQUEST)?"*":"", device->Frequency,
1961         device->UpdateSize, device->NumUpdates
1962     );
1963
1964     if(V0(device->Backend,reset)() == ALC_FALSE)
1965         return ALC_INVALID_DEVICE;
1966
1967     if(device->FmtChans != oldChans && (device->Flags&DEVICE_CHANNELS_REQUEST))
1968     {
1969         ERR("Failed to set %s, got %s instead\n", DevFmtChannelsString(oldChans),
1970             DevFmtChannelsString(device->FmtChans));
1971         device->Flags &= ~DEVICE_CHANNELS_REQUEST;
1972     }
1973     if(device->FmtType != oldType && (device->Flags&DEVICE_SAMPLE_TYPE_REQUEST))
1974     {
1975         ERR("Failed to set %s, got %s instead\n", DevFmtTypeString(oldType),
1976             DevFmtTypeString(device->FmtType));
1977         device->Flags &= ~DEVICE_SAMPLE_TYPE_REQUEST;
1978     }
1979     if(device->Frequency != oldFreq && (device->Flags&DEVICE_FREQUENCY_REQUEST))
1980     {
1981         ERR("Failed to set %uhz, got %uhz instead\n", oldFreq, device->Frequency);
1982         device->Flags &= ~DEVICE_FREQUENCY_REQUEST;
1983     }
1984
1985     if((device->UpdateSize&3) != 0)
1986     {
1987         if((CPUCapFlags&CPU_CAP_SSE))
1988             WARN("SSE performs best with multiple of 4 update sizes (%u)\n", device->UpdateSize);
1989         if((CPUCapFlags&CPU_CAP_NEON))
1990             WARN("NEON performs best with multiple of 4 update sizes (%u)\n", device->UpdateSize);
1991     }
1992
1993     TRACE("Post-reset: %s, %s, %uhz, %u update size x%d\n",
1994         DevFmtChannelsString(device->FmtChans), DevFmtTypeString(device->FmtType),
1995         device->Frequency, device->UpdateSize, device->NumUpdates
1996     );
1997
1998     aluInitRenderer(device, hrtf_id, hrtf_appreq, hrtf_userreq);
1999
2000     /* Allocate extra channels for any post-filter output. */
2001     size = device->Dry.NumChannels * sizeof(device->Dry.Buffer[0]);
2002     if(device->AmbiDecoder && bformatdec_getOrder(device->AmbiDecoder) >= 2)
2003         size += (ChannelsFromDevFmt(device->FmtChans)+4) * sizeof(device->Dry.Buffer[0]);
2004     else if(device->Hrtf || device->Uhj_Encoder || device->AmbiDecoder)
2005         size += ChannelsFromDevFmt(device->FmtChans) * sizeof(device->Dry.Buffer[0]);
2006     device->Dry.Buffer = al_calloc(16, size);
2007     if(!device->Dry.Buffer)
2008     {
2009         ERR("Failed to allocate "SZFMT" bytes for mix buffer\n", size);
2010         return ALC_INVALID_DEVICE;
2011     }
2012
2013     if(device->Hrtf || device->Uhj_Encoder || device->AmbiDecoder)
2014     {
2015         device->VirtOut.Buffer = device->Dry.Buffer;
2016         device->VirtOut.NumChannels = device->Dry.NumChannels;
2017         device->RealOut.Buffer = device->Dry.Buffer + device->Dry.NumChannels;
2018         device->RealOut.NumChannels = ChannelsFromDevFmt(device->FmtChans);
2019     }
2020     else
2021     {
2022         device->VirtOut.Buffer = NULL;
2023         device->VirtOut.NumChannels = 0;
2024         device->RealOut.Buffer = device->Dry.Buffer;
2025         device->RealOut.NumChannels = device->Dry.NumChannels;
2026     }
2027
2028     if(device->AmbiDecoder && bformatdec_getOrder(device->AmbiDecoder) >= 2)
2029     {
2030         /* Higher-order high quality decoding requires upsampling first-order
2031          * content, so make sure to mix it separately.
2032          */
2033         device->FOAOut.Buffer = device->RealOut.Buffer + device->RealOut.NumChannels;
2034         device->FOAOut.NumChannels = 4;
2035     }
2036     else
2037     {
2038         device->FOAOut.Buffer = device->Dry.Buffer;
2039         device->FOAOut.NumChannels = device->Dry.NumChannels;
2040     }
2041
2042     SetMixerFPUMode(&oldMode);
2043     if(device->DefaultSlot)
2044     {
2045         ALeffectslot *slot = device->DefaultSlot;
2046         ALeffectState *state = slot->Params.EffectState;
2047
2048         state->OutBuffer = device->Dry.Buffer;
2049         state->OutChannels = device->Dry.NumChannels;
2050         if(V(state,deviceUpdate)(device) == AL_FALSE)
2051         {
2052             RestoreFPUMode(&oldMode);
2053             return ALC_INVALID_DEVICE;
2054         }
2055         UpdateEffectSlotProps(slot);
2056     }
2057
2058     context = ATOMIC_LOAD(&device->ContextList);
2059     while(context)
2060     {
2061         ALsizei pos;
2062
2063         ReadLock(&context->PropLock);
2064         LockUIntMapRead(&context->EffectSlotMap);
2065         for(pos = 0;pos < context->EffectSlotMap.size;pos++)
2066         {
2067             ALeffectslot *slot = context->EffectSlotMap.array[pos].value;
2068             ALeffectState *state = slot->Params.EffectState;
2069
2070             state->OutBuffer = device->Dry.Buffer;
2071             state->OutChannels = device->Dry.NumChannels;
2072             if(V(state,deviceUpdate)(device) == AL_FALSE)
2073             {
2074                 UnlockUIntMapRead(&context->EffectSlotMap);
2075                 ReadUnlock(&context->PropLock);
2076                 RestoreFPUMode(&oldMode);
2077                 return ALC_INVALID_DEVICE;
2078             }
2079
2080             UpdateEffectSlotProps(slot);
2081         }
2082         UnlockUIntMapRead(&context->EffectSlotMap);
2083
2084         LockUIntMapRead(&context->SourceMap);
2085         for(pos = 0;pos < context->SourceMap.size;pos++)
2086         {
2087             ALsource *source = context->SourceMap.array[pos].value;
2088             ALuint s = device->NumAuxSends;
2089             while(s < MAX_SENDS)
2090             {
2091                 if(source->Send[s].Slot)
2092                     DecrementRef(&source->Send[s].Slot->ref);
2093                 source->Send[s].Slot = NULL;
2094                 source->Send[s].Gain = 1.0f;
2095                 source->Send[s].GainHF = 1.0f;
2096                 source->Send[s].HFReference = LOWPASSFREQREF;
2097                 source->Send[s].GainLF = 1.0f;
2098                 source->Send[s].LFReference = HIGHPASSFREQREF;
2099                 s++;
2100             }
2101         }
2102         UnlockUIntMapRead(&context->SourceMap);
2103
2104         UpdateAllSourceProps(context);
2105         ReadUnlock(&context->PropLock);
2106
2107         context = context->next;
2108     }
2109     RestoreFPUMode(&oldMode);
2110
2111     if(!(device->Flags&DEVICE_PAUSED))
2112     {
2113         if(V0(device->Backend,start)() == ALC_FALSE)
2114             return ALC_INVALID_DEVICE;
2115         device->Flags |= DEVICE_RUNNING;
2116     }
2117
2118     return ALC_NO_ERROR;
2119 }
2120
2121 /* FreeDevice
2122  *
2123  * Frees the device structure, and destroys any objects the app failed to
2124  * delete. Called once there's no more references on the device.
2125  */
2126 static ALCvoid FreeDevice(ALCdevice *device)
2127 {
2128     TRACE("%p\n", device);
2129
2130     V0(device->Backend,close)();
2131     DELETE_OBJ(device->Backend);
2132     device->Backend = NULL;
2133
2134     if(device->DefaultSlot)
2135     {
2136         DeinitEffectSlot(device->DefaultSlot);
2137         device->DefaultSlot = NULL;
2138     }
2139
2140     if(device->BufferMap.size > 0)
2141     {
2142         WARN("(%p) Deleting %d Buffer(s)\n", device, device->BufferMap.size);
2143         ReleaseALBuffers(device);
2144     }
2145     ResetUIntMap(&device->BufferMap);
2146
2147     if(device->EffectMap.size > 0)
2148     {
2149         WARN("(%p) Deleting %d Effect(s)\n", device, device->EffectMap.size);
2150         ReleaseALEffects(device);
2151     }
2152     ResetUIntMap(&device->EffectMap);
2153
2154     if(device->FilterMap.size > 0)
2155     {
2156         WARN("(%p) Deleting %d Filter(s)\n", device, device->FilterMap.size);
2157         ReleaseALFilters(device);
2158     }
2159     ResetUIntMap(&device->FilterMap);
2160
2161     AL_STRING_DEINIT(device->Hrtf_Name);
2162     FreeHrtfList(&device->Hrtf_List);
2163
2164     al_free(device->Bs2b);
2165     device->Bs2b = NULL;
2166
2167     al_free(device->Uhj_Encoder);
2168     device->Uhj_Encoder = NULL;
2169
2170     bformatdec_free(device->AmbiDecoder);
2171     device->AmbiDecoder = NULL;
2172
2173     AL_STRING_DEINIT(device->DeviceName);
2174
2175     al_free(device->Dry.Buffer);
2176     device->Dry.Buffer = NULL;
2177     device->Dry.NumChannels = 0;
2178     device->VirtOut.Buffer = NULL;
2179     device->VirtOut.NumChannels = 0;
2180     device->RealOut.Buffer = NULL;
2181     device->RealOut.NumChannels = 0;
2182
2183     al_free(device);
2184 }
2185
2186
2187 void ALCdevice_IncRef(ALCdevice *device)
2188 {
2189     uint ref;
2190     ref = IncrementRef(&device->ref);
2191     TRACEREF("%p increasing refcount to %u\n", device, ref);
2192 }
2193
2194 void ALCdevice_DecRef(ALCdevice *device)
2195 {
2196     uint ref;
2197     ref = DecrementRef(&device->ref);
2198     TRACEREF("%p decreasing refcount to %u\n", device, ref);
2199     if(ref == 0) FreeDevice(device);
2200 }
2201
2202 /* VerifyDevice
2203  *
2204  * Checks if the device handle is valid, and increments its ref count if so.
2205  */
2206 static ALCboolean VerifyDevice(ALCdevice **device)
2207 {
2208     ALCdevice *tmpDevice;
2209
2210     LockLists();
2211     tmpDevice = ATOMIC_LOAD(&DeviceList);
2212     while(tmpDevice)
2213     {
2214         if(tmpDevice == *device)
2215         {
2216             ALCdevice_IncRef(tmpDevice);
2217             UnlockLists();
2218             return ALC_TRUE;
2219         }
2220         tmpDevice = tmpDevice->next;
2221     }
2222     UnlockLists();
2223
2224     *device = NULL;
2225     return ALC_FALSE;
2226 }
2227
2228
2229 /* InitContext
2230  *
2231  * Initializes context fields
2232  */
2233 static ALvoid InitContext(ALCcontext *Context)
2234 {
2235     ALlistener *listener = Context->Listener;
2236
2237     //Initialise listener
2238     listener->Gain = 1.0f;
2239     listener->MetersPerUnit = 1.0f;
2240     listener->Position[0] = 0.0f;
2241     listener->Position[1] = 0.0f;
2242     listener->Position[2] = 0.0f;
2243     listener->Velocity[0] = 0.0f;
2244     listener->Velocity[1] = 0.0f;
2245     listener->Velocity[2] = 0.0f;
2246     listener->Forward[0] = 0.0f;
2247     listener->Forward[1] = 0.0f;
2248     listener->Forward[2] = -1.0f;
2249     listener->Up[0] = 0.0f;
2250     listener->Up[1] = 1.0f;
2251     listener->Up[2] = 0.0f;
2252
2253     aluMatrixdSet(&listener->Params.Matrix,
2254         1.0, 0.0, 0.0, 0.0,
2255         0.0, 1.0, 0.0, 0.0,
2256         0.0, 0.0, 1.0, 0.0,
2257         0.0, 0.0, 0.0, 1.0
2258     );
2259     aluVectorSet(&listener->Params.Velocity, 0.0f, 0.0f, 0.0f, 0.0f);
2260     listener->Params.Gain = 1.0f;
2261     listener->Params.MetersPerUnit = 1.0f;
2262     listener->Params.DopplerFactor = 1.0f;
2263     listener->Params.SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
2264
2265     ATOMIC_INIT(&listener->Update, NULL);
2266     ATOMIC_INIT(&listener->FreeList, NULL);
2267
2268     //Validate Context
2269     InitRef(&Context->UpdateCount, 0);
2270     ATOMIC_INIT(&Context->HoldUpdates, AL_FALSE);
2271     RWLockInit(&Context->PropLock);
2272     ATOMIC_INIT(&Context->LastError, AL_NO_ERROR);
2273     InitUIntMap(&Context->SourceMap, Context->Device->MaxNoOfSources);
2274     InitUIntMap(&Context->EffectSlotMap, Context->Device->AuxiliaryEffectSlotMax);
2275
2276     //Set globals
2277     Context->DistanceModel = DefaultDistanceModel;
2278     Context->SourceDistanceModel = AL_FALSE;
2279     Context->DopplerFactor = 1.0f;
2280     Context->DopplerVelocity = 1.0f;
2281     Context->SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
2282     ATOMIC_INIT(&Context->DeferUpdates, AL_FALSE);
2283
2284     Context->ExtensionList = alExtList;
2285 }
2286
2287
2288 /* FreeContext
2289  *
2290  * Cleans up the context, and destroys any remaining objects the app failed to
2291  * delete. Called once there's no more references on the context.
2292  */
2293 static void FreeContext(ALCcontext *context)
2294 {
2295     ALlistener *listener = context->Listener;
2296     struct ALlistenerProps *lprops;
2297     size_t count;
2298
2299     TRACE("%p\n", context);
2300
2301     if(context->SourceMap.size > 0)
2302     {
2303         WARN("(%p) Deleting %d Source(s)\n", context, context->SourceMap.size);
2304         ReleaseALSources(context);
2305     }
2306     ResetUIntMap(&context->SourceMap);
2307
2308     if(context->EffectSlotMap.size > 0)
2309     {
2310         WARN("(%p) Deleting %d AuxiliaryEffectSlot(s)\n", context, context->EffectSlotMap.size);
2311         ReleaseALAuxiliaryEffectSlots(context);
2312     }
2313     ResetUIntMap(&context->EffectSlotMap);
2314
2315     al_free(context->Voices);
2316     context->Voices = NULL;
2317     context->VoiceCount = 0;
2318     context->MaxVoices = 0;
2319
2320     VECTOR_DEINIT(context->ActiveAuxSlots);
2321
2322     if((lprops=ATOMIC_LOAD(&listener->Update, almemory_order_acquire)) != NULL)
2323     {
2324         TRACE("Freed unapplied listener update %p\n", lprops);
2325         al_free(lprops);
2326     }
2327     count = 0;
2328     lprops = ATOMIC_LOAD(&listener->FreeList, almemory_order_consume);
2329     while(lprops)
2330     {
2331         struct ALlistenerProps *next = ATOMIC_LOAD(&lprops->next, almemory_order_consume);
2332         al_free(lprops);
2333         lprops = next;
2334         ++count;
2335     }
2336     TRACE("Freed "SZFMT" listener property object%s\n", count, (count==1)?"":"s");
2337
2338     ALCdevice_DecRef(context->Device);
2339     context->Device = NULL;
2340
2341     //Invalidate context
2342     memset(context, 0, sizeof(ALCcontext));
2343     al_free(context);
2344 }
2345
2346 /* ReleaseContext
2347  *
2348  * Removes the context reference from the given device and removes it from
2349  * being current on the running thread or globally.
2350  */
2351 static void ReleaseContext(ALCcontext *context, ALCdevice *device)
2352 {
2353     ALCcontext *nextctx;
2354     ALCcontext *origctx;
2355
2356     if(altss_get(LocalContext) == context)
2357     {
2358         WARN("%p released while current on thread\n", context);
2359         altss_set(LocalContext, NULL);
2360         ALCcontext_DecRef(context);
2361     }
2362
2363     origctx = context;
2364     if(ATOMIC_COMPARE_EXCHANGE_STRONG(ALCcontext*, &GlobalContext, &origctx, NULL))
2365         ALCcontext_DecRef(context);
2366
2367     ALCdevice_Lock(device);
2368     origctx = context;
2369     nextctx = context->next;
2370     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCcontext*, &device->ContextList, &origctx, nextctx))
2371     {
2372         ALCcontext *list;
2373         do {
2374             list = origctx;
2375             origctx = context;
2376         } while(!COMPARE_EXCHANGE(&list->next, &origctx, nextctx));
2377     }
2378     ALCdevice_Unlock(device);
2379
2380     ALCcontext_DecRef(context);
2381 }
2382
2383 void ALCcontext_IncRef(ALCcontext *context)
2384 {
2385     uint ref;
2386     ref = IncrementRef(&context->ref);
2387     TRACEREF("%p increasing refcount to %u\n", context, ref);
2388 }
2389
2390 void ALCcontext_DecRef(ALCcontext *context)
2391 {
2392     uint ref;
2393     ref = DecrementRef(&context->ref);
2394     TRACEREF("%p decreasing refcount to %u\n", context, ref);
2395     if(ref == 0) FreeContext(context);
2396 }
2397
2398 static void ReleaseThreadCtx(void *ptr)
2399 {
2400     WARN("%p current for thread being destroyed\n", ptr);
2401     ALCcontext_DecRef(ptr);
2402 }
2403
2404 /* VerifyContext
2405  *
2406  * Checks that the given context is valid, and increments its reference count.
2407  */
2408 static ALCboolean VerifyContext(ALCcontext **context)
2409 {
2410     ALCdevice *dev;
2411
2412     LockLists();
2413     dev = ATOMIC_LOAD(&DeviceList);
2414     while(dev)
2415     {
2416         ALCcontext *ctx = ATOMIC_LOAD(&dev->ContextList);
2417         while(ctx)
2418         {
2419             if(ctx == *context)
2420             {
2421                 ALCcontext_IncRef(ctx);
2422                 UnlockLists();
2423                 return ALC_TRUE;
2424             }
2425             ctx = ctx->next;
2426         }
2427         dev = dev->next;
2428     }
2429     UnlockLists();
2430
2431     *context = NULL;
2432     return ALC_FALSE;
2433 }
2434
2435
2436 /* GetContextRef
2437  *
2438  * Returns the currently active context for this thread, and adds a reference
2439  * without locking it.
2440  */
2441 ALCcontext *GetContextRef(void)
2442 {
2443     ALCcontext *context;
2444
2445     context = altss_get(LocalContext);
2446     if(context)
2447         ALCcontext_IncRef(context);
2448     else
2449     {
2450         LockLists();
2451         context = ATOMIC_LOAD(&GlobalContext);
2452         if(context)
2453             ALCcontext_IncRef(context);
2454         UnlockLists();
2455     }
2456
2457     return context;
2458 }
2459
2460
2461 /************************************************
2462  * Standard ALC functions
2463  ************************************************/
2464
2465 /* alcGetError
2466  *
2467  * Return last ALC generated error code for the given device
2468 */
2469 ALC_API ALCenum ALC_APIENTRY alcGetError(ALCdevice *device)
2470 {
2471     ALCenum errorCode;
2472
2473     if(VerifyDevice(&device))
2474     {
2475         errorCode = ATOMIC_EXCHANGE(ALCenum, &device->LastError, ALC_NO_ERROR);
2476         ALCdevice_DecRef(device);
2477     }
2478     else
2479         errorCode = ATOMIC_EXCHANGE(ALCenum, &LastNullDeviceError, ALC_NO_ERROR);
2480
2481     return errorCode;
2482 }
2483
2484
2485 /* alcSuspendContext
2486  *
2487  * Suspends updates for the given context
2488  */
2489 ALC_API ALCvoid ALC_APIENTRY alcSuspendContext(ALCcontext *context)
2490 {
2491     if(!SuspendDefers)
2492         return;
2493
2494     if(!VerifyContext(&context))
2495         alcSetError(NULL, ALC_INVALID_CONTEXT);
2496     else
2497     {
2498         ALCcontext_DeferUpdates(context);
2499         ALCcontext_DecRef(context);
2500     }
2501 }
2502
2503 /* alcProcessContext
2504  *
2505  * Resumes processing updates for the given context
2506  */
2507 ALC_API ALCvoid ALC_APIENTRY alcProcessContext(ALCcontext *context)
2508 {
2509     if(!SuspendDefers)
2510         return;
2511
2512     if(!VerifyContext(&context))
2513         alcSetError(NULL, ALC_INVALID_CONTEXT);
2514     else
2515     {
2516         ALCcontext_ProcessUpdates(context);
2517         ALCcontext_DecRef(context);
2518     }
2519 }
2520
2521
2522 /* alcGetString
2523  *
2524  * Returns information about the device, and error strings
2525  */
2526 ALC_API const ALCchar* ALC_APIENTRY alcGetString(ALCdevice *Device, ALCenum param)
2527 {
2528     const ALCchar *value = NULL;
2529
2530     switch(param)
2531     {
2532     case ALC_NO_ERROR:
2533         value = alcNoError;
2534         break;
2535
2536     case ALC_INVALID_ENUM:
2537         value = alcErrInvalidEnum;
2538         break;
2539
2540     case ALC_INVALID_VALUE:
2541         value = alcErrInvalidValue;
2542         break;
2543
2544     case ALC_INVALID_DEVICE:
2545         value = alcErrInvalidDevice;
2546         break;
2547
2548     case ALC_INVALID_CONTEXT:
2549         value = alcErrInvalidContext;
2550         break;
2551
2552     case ALC_OUT_OF_MEMORY:
2553         value = alcErrOutOfMemory;
2554         break;
2555
2556     case ALC_DEVICE_SPECIFIER:
2557         value = alcDefaultName;
2558         break;
2559
2560     case ALC_ALL_DEVICES_SPECIFIER:
2561         if(VerifyDevice(&Device))
2562         {
2563             value = al_string_get_cstr(Device->DeviceName);
2564             ALCdevice_DecRef(Device);
2565         }
2566         else
2567         {
2568             ProbeAllDevicesList();
2569             value = al_string_get_cstr(alcAllDevicesList);
2570         }
2571         break;
2572
2573     case ALC_CAPTURE_DEVICE_SPECIFIER:
2574         if(VerifyDevice(&Device))
2575         {
2576             value = al_string_get_cstr(Device->DeviceName);
2577             ALCdevice_DecRef(Device);
2578         }
2579         else
2580         {
2581             ProbeCaptureDeviceList();
2582             value = al_string_get_cstr(alcCaptureDeviceList);
2583         }
2584         break;
2585
2586     /* Default devices are always first in the list */
2587     case ALC_DEFAULT_DEVICE_SPECIFIER:
2588         value = alcDefaultName;
2589         break;
2590
2591     case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
2592         if(al_string_empty(alcAllDevicesList))
2593             ProbeAllDevicesList();
2594
2595         VerifyDevice(&Device);
2596
2597         free(alcDefaultAllDevicesSpecifier);
2598         alcDefaultAllDevicesSpecifier = strdup(al_string_get_cstr(alcAllDevicesList));
2599         if(!alcDefaultAllDevicesSpecifier)
2600             alcSetError(Device, ALC_OUT_OF_MEMORY);
2601
2602         value = alcDefaultAllDevicesSpecifier;
2603         if(Device) ALCdevice_DecRef(Device);
2604         break;
2605
2606     case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
2607         if(al_string_empty(alcCaptureDeviceList))
2608             ProbeCaptureDeviceList();
2609
2610         VerifyDevice(&Device);
2611
2612         free(alcCaptureDefaultDeviceSpecifier);
2613         alcCaptureDefaultDeviceSpecifier = strdup(al_string_get_cstr(alcCaptureDeviceList));
2614         if(!alcCaptureDefaultDeviceSpecifier)
2615             alcSetError(Device, ALC_OUT_OF_MEMORY);
2616
2617         value = alcCaptureDefaultDeviceSpecifier;
2618         if(Device) ALCdevice_DecRef(Device);
2619         break;
2620
2621     case ALC_EXTENSIONS:
2622         if(!VerifyDevice(&Device))
2623             value = alcNoDeviceExtList;
2624         else
2625         {
2626             value = alcExtensionList;
2627             ALCdevice_DecRef(Device);
2628         }
2629         break;
2630
2631     case ALC_HRTF_SPECIFIER_SOFT:
2632         if(!VerifyDevice(&Device))
2633             alcSetError(NULL, ALC_INVALID_DEVICE);
2634         else
2635         {
2636             LockLists();
2637             value = (Device->Hrtf ? al_string_get_cstr(Device->Hrtf_Name) : "");
2638             UnlockLists();
2639             ALCdevice_DecRef(Device);
2640         }
2641         break;
2642
2643     default:
2644         VerifyDevice(&Device);
2645         alcSetError(Device, ALC_INVALID_ENUM);
2646         if(Device) ALCdevice_DecRef(Device);
2647         break;
2648     }
2649
2650     return value;
2651 }
2652
2653
2654 static ALCsizei GetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
2655 {
2656     ALCsizei i;
2657
2658     if(size <= 0 || values == NULL)
2659     {
2660         alcSetError(device, ALC_INVALID_VALUE);
2661         return 0;
2662     }
2663
2664     if(!device)
2665     {
2666         switch(param)
2667         {
2668             case ALC_MAJOR_VERSION:
2669                 values[0] = alcMajorVersion;
2670                 return 1;
2671             case ALC_MINOR_VERSION:
2672                 values[0] = alcMinorVersion;
2673                 return 1;
2674
2675             case ALC_ATTRIBUTES_SIZE:
2676             case ALC_ALL_ATTRIBUTES:
2677             case ALC_FREQUENCY:
2678             case ALC_REFRESH:
2679             case ALC_SYNC:
2680             case ALC_MONO_SOURCES:
2681             case ALC_STEREO_SOURCES:
2682             case ALC_CAPTURE_SAMPLES:
2683             case ALC_FORMAT_CHANNELS_SOFT:
2684             case ALC_FORMAT_TYPE_SOFT:
2685                 alcSetError(NULL, ALC_INVALID_DEVICE);
2686                 return 0;
2687
2688             default:
2689                 alcSetError(NULL, ALC_INVALID_ENUM);
2690                 return 0;
2691         }
2692         return 0;
2693     }
2694
2695     if(device->Type == Capture)
2696     {
2697         switch(param)
2698         {
2699             case ALC_CAPTURE_SAMPLES:
2700                 V0(device->Backend,lock)();
2701                 values[0] = V0(device->Backend,availableSamples)();
2702                 V0(device->Backend,unlock)();
2703                 return 1;
2704
2705             case ALC_CONNECTED:
2706                 values[0] = device->Connected;
2707                 return 1;
2708
2709             default:
2710                 alcSetError(device, ALC_INVALID_ENUM);
2711                 return 0;
2712         }
2713         return 0;
2714     }
2715
2716     /* render device */
2717     switch(param)
2718     {
2719         case ALC_MAJOR_VERSION:
2720             values[0] = alcMajorVersion;
2721             return 1;
2722
2723         case ALC_MINOR_VERSION:
2724             values[0] = alcMinorVersion;
2725             return 1;
2726
2727         case ALC_EFX_MAJOR_VERSION:
2728             values[0] = alcEFXMajorVersion;
2729             return 1;
2730
2731         case ALC_EFX_MINOR_VERSION:
2732             values[0] = alcEFXMinorVersion;
2733             return 1;
2734
2735         case ALC_ATTRIBUTES_SIZE:
2736             values[0] = 17;
2737             return 1;
2738
2739         case ALC_ALL_ATTRIBUTES:
2740             if(size < 17)
2741             {
2742                 alcSetError(device, ALC_INVALID_VALUE);
2743                 return 0;
2744             }
2745
2746             i = 0;
2747             values[i++] = ALC_FREQUENCY;
2748             values[i++] = device->Frequency;
2749
2750             if(device->Type != Loopback)
2751             {
2752                 values[i++] = ALC_REFRESH;
2753                 values[i++] = device->Frequency / device->UpdateSize;
2754
2755                 values[i++] = ALC_SYNC;
2756                 values[i++] = ALC_FALSE;
2757             }
2758             else
2759             {
2760                 values[i++] = ALC_FORMAT_CHANNELS_SOFT;
2761                 values[i++] = device->FmtChans;
2762
2763                 values[i++] = ALC_FORMAT_TYPE_SOFT;
2764                 values[i++] = device->FmtType;
2765             }
2766
2767             values[i++] = ALC_MONO_SOURCES;
2768             values[i++] = device->NumMonoSources;
2769
2770             values[i++] = ALC_STEREO_SOURCES;
2771             values[i++] = device->NumStereoSources;
2772
2773             values[i++] = ALC_MAX_AUXILIARY_SENDS;
2774             values[i++] = device->NumAuxSends;
2775
2776             values[i++] = ALC_HRTF_SOFT;
2777             values[i++] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2778
2779             values[i++] = ALC_HRTF_STATUS_SOFT;
2780             values[i++] = device->Hrtf_Status;
2781
2782             values[i++] = 0;
2783             return i;
2784
2785         case ALC_FREQUENCY:
2786             values[0] = device->Frequency;
2787             return 1;
2788
2789         case ALC_REFRESH:
2790             if(device->Type == Loopback)
2791             {
2792                 alcSetError(device, ALC_INVALID_DEVICE);
2793                 return 0;
2794             }
2795             values[0] = device->Frequency / device->UpdateSize;
2796             return 1;
2797
2798         case ALC_SYNC:
2799             if(device->Type == Loopback)
2800             {
2801                 alcSetError(device, ALC_INVALID_DEVICE);
2802                 return 0;
2803             }
2804             values[0] = ALC_FALSE;
2805             return 1;
2806
2807         case ALC_FORMAT_CHANNELS_SOFT:
2808             if(device->Type != Loopback)
2809             {
2810                 alcSetError(device, ALC_INVALID_DEVICE);
2811                 return 0;
2812             }
2813             values[0] = device->FmtChans;
2814             return 1;
2815
2816         case ALC_FORMAT_TYPE_SOFT:
2817             if(device->Type != Loopback)
2818             {
2819                 alcSetError(device, ALC_INVALID_DEVICE);
2820                 return 0;
2821             }
2822             values[0] = device->FmtType;
2823             return 1;
2824
2825         case ALC_MONO_SOURCES:
2826             values[0] = device->NumMonoSources;
2827             return 1;
2828
2829         case ALC_STEREO_SOURCES:
2830             values[0] = device->NumStereoSources;
2831             return 1;
2832
2833         case ALC_MAX_AUXILIARY_SENDS:
2834             values[0] = device->NumAuxSends;
2835             return 1;
2836
2837         case ALC_CONNECTED:
2838             values[0] = device->Connected;
2839             return 1;
2840
2841         case ALC_HRTF_SOFT:
2842             values[0] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2843             return 1;
2844
2845         case ALC_HRTF_STATUS_SOFT:
2846             values[0] = device->Hrtf_Status;
2847             return 1;
2848
2849         case ALC_NUM_HRTF_SPECIFIERS_SOFT:
2850             FreeHrtfList(&device->Hrtf_List);
2851             device->Hrtf_List = EnumerateHrtf(device->DeviceName);
2852             values[0] = (ALCint)VECTOR_SIZE(device->Hrtf_List);
2853             return 1;
2854
2855         default:
2856             alcSetError(device, ALC_INVALID_ENUM);
2857             return 0;
2858     }
2859     return 0;
2860 }
2861
2862 /* alcGetIntegerv
2863  *
2864  * Returns information about the device and the version of OpenAL
2865  */
2866 ALC_API void ALC_APIENTRY alcGetIntegerv(ALCdevice *device, ALCenum param, ALCsizei size, ALCint *values)
2867 {
2868     VerifyDevice(&device);
2869     if(size <= 0 || values == NULL)
2870         alcSetError(device, ALC_INVALID_VALUE);
2871     else
2872         GetIntegerv(device, param, size, values);
2873     if(device) ALCdevice_DecRef(device);
2874 }
2875
2876 ALC_API void ALC_APIENTRY alcGetInteger64vSOFT(ALCdevice *device, ALCenum pname, ALCsizei size, ALCint64SOFT *values)
2877 {
2878     ALCint *ivals;
2879     ALsizei i;
2880
2881     VerifyDevice(&device);
2882     if(size <= 0 || values == NULL)
2883         alcSetError(device, ALC_INVALID_VALUE);
2884     else if(!device || device->Type == Capture)
2885     {
2886         ivals = malloc(size * sizeof(ALCint));
2887         size = GetIntegerv(device, pname, size, ivals);
2888         for(i = 0;i < size;i++)
2889             values[i] = ivals[i];
2890         free(ivals);
2891     }
2892     else /* render device */
2893     {
2894         switch(pname)
2895         {
2896             case ALC_ATTRIBUTES_SIZE:
2897                 *values = 19;
2898                 break;
2899
2900             case ALC_ALL_ATTRIBUTES:
2901                 if(size < 19)
2902                     alcSetError(device, ALC_INVALID_VALUE);
2903                 else
2904                 {
2905                     int i = 0;
2906
2907                     V0(device->Backend,lock)();
2908                     values[i++] = ALC_FREQUENCY;
2909                     values[i++] = device->Frequency;
2910
2911                     if(device->Type != Loopback)
2912                     {
2913                         values[i++] = ALC_REFRESH;
2914                         values[i++] = device->Frequency / device->UpdateSize;
2915
2916                         values[i++] = ALC_SYNC;
2917                         values[i++] = ALC_FALSE;
2918                     }
2919                     else
2920                     {
2921                         values[i++] = ALC_FORMAT_CHANNELS_SOFT;
2922                         values[i++] = device->FmtChans;
2923
2924                         values[i++] = ALC_FORMAT_TYPE_SOFT;
2925                         values[i++] = device->FmtType;
2926                     }
2927
2928                     values[i++] = ALC_MONO_SOURCES;
2929                     values[i++] = device->NumMonoSources;
2930
2931                     values[i++] = ALC_STEREO_SOURCES;
2932                     values[i++] = device->NumStereoSources;
2933
2934                     values[i++] = ALC_MAX_AUXILIARY_SENDS;
2935                     values[i++] = device->NumAuxSends;
2936
2937                     values[i++] = ALC_HRTF_SOFT;
2938                     values[i++] = (device->Hrtf ? ALC_TRUE : ALC_FALSE);
2939
2940                     values[i++] = ALC_HRTF_STATUS_SOFT;
2941                     values[i++] = device->Hrtf_Status;
2942
2943                     values[i++] = ALC_DEVICE_CLOCK_SOFT;
2944                     values[i++] = device->ClockBase +
2945                                   (device->SamplesDone * DEVICE_CLOCK_RES / device->Frequency);
2946
2947                     values[i++] = 0;
2948                     V0(device->Backend,unlock)();
2949                 }
2950                 break;
2951
2952             case ALC_DEVICE_CLOCK_SOFT:
2953                 V0(device->Backend,lock)();
2954                 *values = device->ClockBase +
2955                           (device->SamplesDone * DEVICE_CLOCK_RES / device->Frequency);
2956                 V0(device->Backend,unlock)();
2957                 break;
2958
2959             default:
2960                 ivals = malloc(size * sizeof(ALCint));
2961                 size = GetIntegerv(device, pname, size, ivals);
2962                 for(i = 0;i < size;i++)
2963                     values[i] = ivals[i];
2964                 free(ivals);
2965                 break;
2966         }
2967     }
2968     if(device)
2969         ALCdevice_DecRef(device);
2970 }
2971
2972
2973 /* alcIsExtensionPresent
2974  *
2975  * Determines if there is support for a particular extension
2976  */
2977 ALC_API ALCboolean ALC_APIENTRY alcIsExtensionPresent(ALCdevice *device, const ALCchar *extName)
2978 {
2979     ALCboolean bResult = ALC_FALSE;
2980
2981     VerifyDevice(&device);
2982
2983     if(!extName)
2984         alcSetError(device, ALC_INVALID_VALUE);
2985     else
2986     {
2987         size_t len = strlen(extName);
2988         const char *ptr = (device ? alcExtensionList : alcNoDeviceExtList);
2989         while(ptr && *ptr)
2990         {
2991             if(strncasecmp(ptr, extName, len) == 0 &&
2992                (ptr[len] == '\0' || isspace(ptr[len])))
2993             {
2994                 bResult = ALC_TRUE;
2995                 break;
2996             }
2997             if((ptr=strchr(ptr, ' ')) != NULL)
2998             {
2999                 do {
3000                     ++ptr;
3001                 } while(isspace(*ptr));
3002             }
3003         }
3004     }
3005     if(device)
3006         ALCdevice_DecRef(device);
3007     return bResult;
3008 }
3009
3010
3011 /* alcGetProcAddress
3012  *
3013  * Retrieves the function address for a particular extension function
3014  */
3015 ALC_API ALCvoid* ALC_APIENTRY alcGetProcAddress(ALCdevice *device, const ALCchar *funcName)
3016 {
3017     ALCvoid *ptr = NULL;
3018
3019     if(!funcName)
3020     {
3021         VerifyDevice(&device);
3022         alcSetError(device, ALC_INVALID_VALUE);
3023         if(device) ALCdevice_DecRef(device);
3024     }
3025     else
3026     {
3027         ALsizei i = 0;
3028         while(alcFunctions[i].funcName && strcmp(alcFunctions[i].funcName, funcName) != 0)
3029             i++;
3030         ptr = alcFunctions[i].address;
3031     }
3032
3033     return ptr;
3034 }
3035
3036
3037 /* alcGetEnumValue
3038  *
3039  * Get the value for a particular ALC enumeration name
3040  */
3041 ALC_API ALCenum ALC_APIENTRY alcGetEnumValue(ALCdevice *device, const ALCchar *enumName)
3042 {
3043     ALCenum val = 0;
3044
3045     if(!enumName)
3046     {
3047         VerifyDevice(&device);
3048         alcSetError(device, ALC_INVALID_VALUE);
3049         if(device) ALCdevice_DecRef(device);
3050     }
3051     else
3052     {
3053         ALsizei i = 0;
3054         while(enumeration[i].enumName && strcmp(enumeration[i].enumName, enumName) != 0)
3055             i++;
3056         val = enumeration[i].value;
3057     }
3058
3059     return val;
3060 }
3061
3062
3063 /* alcCreateContext
3064  *
3065  * Create and attach a context to the given device.
3066  */
3067 ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCint *attrList)
3068 {
3069     ALCcontext *ALContext;
3070     ALCenum err;
3071
3072     LockLists();
3073     if(!VerifyDevice(&device) || device->Type == Capture || !device->Connected)
3074     {
3075         UnlockLists();
3076         alcSetError(device, ALC_INVALID_DEVICE);
3077         if(device) ALCdevice_DecRef(device);
3078         return NULL;
3079     }
3080
3081     ATOMIC_STORE(&device->LastError, ALC_NO_ERROR);
3082
3083     ALContext = al_calloc(16, sizeof(ALCcontext)+sizeof(ALlistener));
3084     if(ALContext)
3085     {
3086         InitRef(&ALContext->ref, 1);
3087         ALContext->Listener = (ALlistener*)ALContext->_listener_mem;
3088
3089         VECTOR_INIT(ALContext->ActiveAuxSlots);
3090
3091         ALContext->VoiceCount = 0;
3092         ALContext->MaxVoices = 256;
3093         ALContext->Voices = al_calloc(16, ALContext->MaxVoices * sizeof(ALContext->Voices[0]));
3094     }
3095     if(!ALContext || !ALContext->Voices)
3096     {
3097         UnlockLists();
3098
3099         if(ALContext)
3100         {
3101             al_free(ALContext->Voices);
3102             ALContext->Voices = NULL;
3103
3104             VECTOR_DEINIT(ALContext->ActiveAuxSlots);
3105
3106             al_free(ALContext);
3107             ALContext = NULL;
3108         }
3109
3110         alcSetError(device, ALC_OUT_OF_MEMORY);
3111         ALCdevice_DecRef(device);
3112         return NULL;
3113     }
3114
3115     if((err=UpdateDeviceParams(device, attrList)) != ALC_NO_ERROR)
3116     {
3117         UnlockLists();
3118
3119         al_free(ALContext->Voices);
3120         ALContext->Voices = NULL;
3121
3122         VECTOR_DEINIT(ALContext->ActiveAuxSlots);
3123
3124         al_free(ALContext);
3125         ALContext = NULL;
3126
3127         alcSetError(device, err);
3128         if(err == ALC_INVALID_DEVICE)
3129         {
3130             V0(device->Backend,lock)();
3131             aluHandleDisconnect(device);
3132             V0(device->Backend,unlock)();
3133         }
3134         ALCdevice_DecRef(device);
3135         return NULL;
3136     }
3137
3138     ALContext->Device = device;
3139     ALCdevice_IncRef(device);
3140     InitContext(ALContext);
3141
3142     {
3143         ALCcontext *head = ATOMIC_LOAD(&device->ContextList);
3144         do {
3145             ALContext->next = head;
3146         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCcontext*, &device->ContextList, &head, ALContext));
3147     }
3148     UnlockLists();
3149
3150     ALCdevice_DecRef(device);
3151
3152     TRACE("Created context %p\n", ALContext);
3153     return ALContext;
3154 }
3155
3156 /* alcDestroyContext
3157  *
3158  * Remove a context from its device
3159  */
3160 ALC_API ALCvoid ALC_APIENTRY alcDestroyContext(ALCcontext *context)
3161 {
3162     ALCdevice *Device;
3163
3164     LockLists();
3165     /* alcGetContextsDevice sets an error for invalid contexts */
3166     Device = alcGetContextsDevice(context);
3167     if(Device)
3168     {
3169         ReleaseContext(context, Device);
3170         if(!ATOMIC_LOAD(&Device->ContextList))
3171         {
3172             V0(Device->Backend,stop)();
3173             Device->Flags &= ~DEVICE_RUNNING;
3174         }
3175     }
3176     UnlockLists();
3177 }
3178
3179
3180 /* alcGetCurrentContext
3181  *
3182  * Returns the currently active context on the calling thread
3183  */
3184 ALC_API ALCcontext* ALC_APIENTRY alcGetCurrentContext(void)
3185 {
3186     ALCcontext *Context = altss_get(LocalContext);
3187     if(!Context) Context = ATOMIC_LOAD(&GlobalContext);
3188     return Context;
3189 }
3190
3191 /* alcGetThreadContext
3192  *
3193  * Returns the currently active thread-local context
3194  */
3195 ALC_API ALCcontext* ALC_APIENTRY alcGetThreadContext(void)
3196 {
3197     return altss_get(LocalContext);
3198 }
3199
3200
3201 /* alcMakeContextCurrent
3202  *
3203  * Makes the given context the active process-wide context, and removes the
3204  * thread-local context for the calling thread.
3205  */
3206 ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context)
3207 {
3208     /* context must be valid or NULL */
3209     if(context && !VerifyContext(&context))
3210     {
3211         alcSetError(NULL, ALC_INVALID_CONTEXT);
3212         return ALC_FALSE;
3213     }
3214     /* context's reference count is already incremented */
3215     context = ATOMIC_EXCHANGE(ALCcontext*, &GlobalContext, context);
3216     if(context) ALCcontext_DecRef(context);
3217
3218     if((context=altss_get(LocalContext)) != NULL)
3219     {
3220         altss_set(LocalContext, NULL);
3221         ALCcontext_DecRef(context);
3222     }
3223
3224     return ALC_TRUE;
3225 }
3226
3227 /* alcSetThreadContext
3228  *
3229  * Makes the given context the active context for the current thread
3230  */
3231 ALC_API ALCboolean ALC_APIENTRY alcSetThreadContext(ALCcontext *context)
3232 {
3233     ALCcontext *old;
3234
3235     /* context must be valid or NULL */
3236     if(context && !VerifyContext(&context))
3237     {
3238         alcSetError(NULL, ALC_INVALID_CONTEXT);
3239         return ALC_FALSE;
3240     }
3241     /* context's reference count is already incremented */
3242     old = altss_get(LocalContext);
3243     altss_set(LocalContext, context);
3244     if(old) ALCcontext_DecRef(old);
3245
3246     return ALC_TRUE;
3247 }
3248
3249
3250 /* alcGetContextsDevice
3251  *
3252  * Returns the device that a particular context is attached to
3253  */
3254 ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice(ALCcontext *Context)
3255 {
3256     ALCdevice *Device;
3257
3258     if(!VerifyContext(&Context))
3259     {
3260         alcSetError(NULL, ALC_INVALID_CONTEXT);
3261         return NULL;
3262     }
3263     Device = Context->Device;
3264     ALCcontext_DecRef(Context);
3265
3266     return Device;
3267 }
3268
3269
3270 /* alcOpenDevice
3271  *
3272  * Opens the named device.
3273  */
3274 ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
3275 {
3276     const ALCchar *fmt;
3277     ALCdevice *device;
3278     ALCenum err;
3279
3280     DO_INITCONFIG();
3281
3282     if(!PlaybackBackend.name)
3283     {
3284         alcSetError(NULL, ALC_INVALID_VALUE);
3285         return NULL;
3286     }
3287
3288     if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0
3289 #ifdef _WIN32
3290         /* Some old Windows apps hardcode these expecting OpenAL to use a
3291          * specific audio API, even when they're not enumerated. Creative's
3292          * router effectively ignores them too.
3293          */
3294         || strcasecmp(deviceName, "DirectSound3D") == 0 || strcasecmp(deviceName, "DirectSound") == 0
3295         || strcasecmp(deviceName, "MMSYSTEM") == 0
3296 #endif
3297     ))
3298         deviceName = NULL;
3299
3300     device = al_calloc(16, sizeof(ALCdevice)+sizeof(ALeffectslot));
3301     if(!device)
3302     {
3303         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3304         return NULL;
3305     }
3306
3307     //Validate device
3308     InitRef(&device->ref, 1);
3309     device->Connected = ALC_TRUE;
3310     device->Type = Playback;
3311     ATOMIC_INIT(&device->LastError, ALC_NO_ERROR);
3312
3313     device->Flags = 0;
3314     device->Bs2b = NULL;
3315     device->Uhj_Encoder = NULL;
3316     VECTOR_INIT(device->Hrtf_List);
3317     AL_STRING_INIT(device->Hrtf_Name);
3318     device->Render_Mode = NormalRender;
3319     AL_STRING_INIT(device->DeviceName);
3320     device->Dry.Buffer = NULL;
3321     device->Dry.NumChannels = 0;
3322     device->VirtOut.Buffer = NULL;
3323     device->VirtOut.NumChannels = 0;
3324     device->RealOut.Buffer = NULL;
3325     device->RealOut.NumChannels = 0;
3326
3327     ATOMIC_INIT(&device->ContextList, NULL);
3328
3329     device->ClockBase = 0;
3330     device->SamplesDone = 0;
3331
3332     device->MaxNoOfSources = 256;
3333     device->AuxiliaryEffectSlotMax = 4;
3334     device->NumAuxSends = MAX_SENDS;
3335
3336     InitUIntMap(&device->BufferMap, ~0);
3337     InitUIntMap(&device->EffectMap, ~0);
3338     InitUIntMap(&device->FilterMap, ~0);
3339
3340     //Set output format
3341     device->FmtChans = DevFmtChannelsDefault;
3342     device->FmtType = DevFmtTypeDefault;
3343     device->Frequency = DEFAULT_OUTPUT_RATE;
3344     device->IsHeadphones = AL_FALSE;
3345     device->NumUpdates = 4;
3346     device->UpdateSize = 1024;
3347
3348     if(!PlaybackBackend.getFactory)
3349         device->Backend = create_backend_wrapper(device, &PlaybackBackend.Funcs,
3350                                                  ALCbackend_Playback);
3351     else
3352     {
3353         ALCbackendFactory *factory = PlaybackBackend.getFactory();
3354         device->Backend = V(factory,createBackend)(device, ALCbackend_Playback);
3355     }
3356     if(!device->Backend)
3357     {
3358         al_free(device);
3359         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3360         return NULL;
3361     }
3362
3363
3364     if(ConfigValueStr(deviceName, NULL, "channels", &fmt))
3365     {
3366         static const struct {
3367             const char name[16];
3368             enum DevFmtChannels chans;
3369         } chanlist[] = {
3370             { "mono",       DevFmtMono   },
3371             { "stereo",     DevFmtStereo },
3372             { "quad",       DevFmtQuad   },
3373             { "surround51", DevFmtX51    },
3374             { "surround61", DevFmtX61    },
3375             { "surround71", DevFmtX71    },
3376             { "surround51rear", DevFmtX51Rear },
3377         };
3378         size_t i;
3379
3380         for(i = 0;i < COUNTOF(chanlist);i++)
3381         {
3382             if(strcasecmp(chanlist[i].name, fmt) == 0)
3383             {
3384                 device->FmtChans = chanlist[i].chans;
3385                 device->Flags |= DEVICE_CHANNELS_REQUEST;
3386                 break;
3387             }
3388         }
3389         if(i == COUNTOF(chanlist))
3390             ERR("Unsupported channels: %s\n", fmt);
3391     }
3392     if(ConfigValueStr(deviceName, NULL, "sample-type", &fmt))
3393     {
3394         static const struct {
3395             const char name[16];
3396             enum DevFmtType type;
3397         } typelist[] = {
3398             { "int8",    DevFmtByte   },
3399             { "uint8",   DevFmtUByte  },
3400             { "int16",   DevFmtShort  },
3401             { "uint16",  DevFmtUShort },
3402             { "int32",   DevFmtInt    },
3403             { "uint32",  DevFmtUInt   },
3404             { "float32", DevFmtFloat  },
3405         };
3406         size_t i;
3407
3408         for(i = 0;i < COUNTOF(typelist);i++)
3409         {
3410             if(strcasecmp(typelist[i].name, fmt) == 0)
3411             {
3412                 device->FmtType = typelist[i].type;
3413                 device->Flags |= DEVICE_SAMPLE_TYPE_REQUEST;
3414                 break;
3415             }
3416         }
3417         if(i == COUNTOF(typelist))
3418             ERR("Unsupported sample-type: %s\n", fmt);
3419     }
3420
3421     if(ConfigValueUInt(deviceName, NULL, "frequency", &device->Frequency))
3422     {
3423         device->Flags |= DEVICE_FREQUENCY_REQUEST;
3424         if(device->Frequency < MIN_OUTPUT_RATE)
3425             ERR("%uhz request clamped to %uhz minimum\n", device->Frequency, MIN_OUTPUT_RATE);
3426         device->Frequency = maxu(device->Frequency, MIN_OUTPUT_RATE);
3427     }
3428
3429     ConfigValueUInt(deviceName, NULL, "periods", &device->NumUpdates);
3430     device->NumUpdates = clampu(device->NumUpdates, 2, 16);
3431
3432     ConfigValueUInt(deviceName, NULL, "period_size", &device->UpdateSize);
3433     device->UpdateSize = clampu(device->UpdateSize, 64, 8192);
3434     if((CPUCapFlags&(CPU_CAP_SSE|CPU_CAP_NEON)) != 0)
3435         device->UpdateSize = (device->UpdateSize+3)&~3;
3436
3437     ConfigValueUInt(deviceName, NULL, "sources", &device->MaxNoOfSources);
3438     if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256;
3439
3440     ConfigValueUInt(deviceName, NULL, "slots", &device->AuxiliaryEffectSlotMax);
3441     if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4;
3442
3443     ConfigValueUInt(deviceName, NULL, "sends", &device->NumAuxSends);
3444     if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS;
3445
3446     device->NumStereoSources = 1;
3447     device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
3448
3449     // Find a playback device to open
3450     if((err=V(device->Backend,open)(deviceName)) != ALC_NO_ERROR)
3451     {
3452         DELETE_OBJ(device->Backend);
3453         al_free(device);
3454         alcSetError(NULL, err);
3455         return NULL;
3456     }
3457
3458     if(DefaultEffect.type != AL_EFFECT_NULL)
3459     {
3460         device->DefaultSlot = (ALeffectslot*)device->_slot_mem;
3461         if(InitEffectSlot(device->DefaultSlot) != AL_NO_ERROR)
3462         {
3463             device->DefaultSlot = NULL;
3464             ERR("Failed to initialize the default effect slot\n");
3465         }
3466         else
3467         {
3468             aluInitEffectPanning(device->DefaultSlot);
3469             if(InitializeEffect(device, device->DefaultSlot, &DefaultEffect) != AL_NO_ERROR)
3470             {
3471                 DeinitEffectSlot(device->DefaultSlot);
3472                 device->DefaultSlot = NULL;
3473                 ERR("Failed to initialize the default effect\n");
3474             }
3475         }
3476     }
3477
3478     {
3479         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3480         do {
3481             device->next = head;
3482         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3483     }
3484
3485     TRACE("Created device %p, \"%s\"\n", device, al_string_get_cstr(device->DeviceName));
3486     return device;
3487 }
3488
3489 /* alcCloseDevice
3490  *
3491  * Closes the given device.
3492  */
3493 ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *device)
3494 {
3495     ALCdevice *list, *origdev, *nextdev;
3496     ALCcontext *ctx;
3497
3498     LockLists();
3499     list = ATOMIC_LOAD(&DeviceList);
3500     do {
3501         if(list == device)
3502             break;
3503     } while((list=list->next) != NULL);
3504     if(!list || list->Type == Capture)
3505     {
3506         alcSetError(list, ALC_INVALID_DEVICE);
3507         UnlockLists();
3508         return ALC_FALSE;
3509     }
3510
3511     origdev = device;
3512     nextdev = device->next;
3513     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCdevice*, &DeviceList, &origdev, nextdev))
3514     {
3515         do {
3516             list = origdev;
3517             origdev = device;
3518         } while(!COMPARE_EXCHANGE(&list->next, &origdev, nextdev));
3519     }
3520     UnlockLists();
3521
3522     ctx = ATOMIC_LOAD(&device->ContextList);
3523     while(ctx != NULL)
3524     {
3525         ALCcontext *next = ctx->next;
3526         WARN("Releasing context %p\n", ctx);
3527         ReleaseContext(ctx, device);
3528         ctx = next;
3529     }
3530     if((device->Flags&DEVICE_RUNNING))
3531         V0(device->Backend,stop)();
3532     device->Flags &= ~DEVICE_RUNNING;
3533
3534     ALCdevice_DecRef(device);
3535
3536     return ALC_TRUE;
3537 }
3538
3539
3540 /************************************************
3541  * ALC capture functions
3542  ************************************************/
3543 ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei samples)
3544 {
3545     ALCdevice *device = NULL;
3546     ALCenum err;
3547
3548     DO_INITCONFIG();
3549
3550     if(!CaptureBackend.name)
3551     {
3552         alcSetError(NULL, ALC_INVALID_VALUE);
3553         return NULL;
3554     }
3555
3556     if(samples <= 0)
3557     {
3558         alcSetError(NULL, ALC_INVALID_VALUE);
3559         return NULL;
3560     }
3561
3562     if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0))
3563         deviceName = NULL;
3564
3565     device = al_calloc(16, sizeof(ALCdevice));
3566     if(!device)
3567     {
3568         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3569         return NULL;
3570     }
3571
3572     //Validate device
3573     InitRef(&device->ref, 1);
3574     device->Connected = ALC_TRUE;
3575     device->Type = Capture;
3576
3577     VECTOR_INIT(device->Hrtf_List);
3578     AL_STRING_INIT(device->Hrtf_Name);
3579
3580     AL_STRING_INIT(device->DeviceName);
3581     device->Dry.Buffer = NULL;
3582     device->Dry.NumChannels = 0;
3583     device->VirtOut.Buffer = NULL;
3584     device->VirtOut.NumChannels = 0;
3585     device->RealOut.Buffer = NULL;
3586     device->RealOut.NumChannels = 0;
3587
3588     InitUIntMap(&device->BufferMap, ~0);
3589     InitUIntMap(&device->EffectMap, ~0);
3590     InitUIntMap(&device->FilterMap, ~0);
3591
3592     if(!CaptureBackend.getFactory)
3593         device->Backend = create_backend_wrapper(device, &CaptureBackend.Funcs,
3594                                                  ALCbackend_Capture);
3595     else
3596     {
3597         ALCbackendFactory *factory = CaptureBackend.getFactory();
3598         device->Backend = V(factory,createBackend)(device, ALCbackend_Capture);
3599     }
3600     if(!device->Backend)
3601     {
3602         al_free(device);
3603         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3604         return NULL;
3605     }
3606
3607     device->Flags |= DEVICE_FREQUENCY_REQUEST;
3608     device->Frequency = frequency;
3609
3610     device->Flags |= DEVICE_CHANNELS_REQUEST | DEVICE_SAMPLE_TYPE_REQUEST;
3611     if(DecomposeDevFormat(format, &device->FmtChans, &device->FmtType) == AL_FALSE)
3612     {
3613         al_free(device);
3614         alcSetError(NULL, ALC_INVALID_ENUM);
3615         return NULL;
3616     }
3617     device->IsHeadphones = AL_FALSE;
3618
3619     device->UpdateSize = samples;
3620     device->NumUpdates = 1;
3621
3622     if((err=V(device->Backend,open)(deviceName)) != ALC_NO_ERROR)
3623     {
3624         al_free(device);
3625         alcSetError(NULL, err);
3626         return NULL;
3627     }
3628
3629     {
3630         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3631         do {
3632             device->next = head;
3633         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3634     }
3635
3636     TRACE("Created device %p, \"%s\"\n", device, al_string_get_cstr(device->DeviceName));
3637     return device;
3638 }
3639
3640 ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice(ALCdevice *device)
3641 {
3642     ALCdevice *list, *next, *nextdev;
3643
3644     LockLists();
3645     list = ATOMIC_LOAD(&DeviceList);
3646     do {
3647         if(list == device)
3648             break;
3649     } while((list=list->next) != NULL);
3650     if(!list || list->Type != Capture)
3651     {
3652         alcSetError(list, ALC_INVALID_DEVICE);
3653         UnlockLists();
3654         return ALC_FALSE;
3655     }
3656
3657     next = device;
3658     nextdev = device->next;
3659     if(!ATOMIC_COMPARE_EXCHANGE_STRONG(ALCdevice*, &DeviceList, &next, nextdev))
3660     {
3661         do {
3662             list = next;
3663             next = device;
3664         } while(!COMPARE_EXCHANGE(&list->next, &next, nextdev));
3665     }
3666     UnlockLists();
3667
3668     ALCdevice_DecRef(device);
3669
3670     return ALC_TRUE;
3671 }
3672
3673 ALC_API void ALC_APIENTRY alcCaptureStart(ALCdevice *device)
3674 {
3675     if(!VerifyDevice(&device) || device->Type != Capture)
3676         alcSetError(device, ALC_INVALID_DEVICE);
3677     else
3678     {
3679         V0(device->Backend,lock)();
3680         if(!device->Connected)
3681             alcSetError(device, ALC_INVALID_DEVICE);
3682         else if(!(device->Flags&DEVICE_RUNNING))
3683         {
3684             if(V0(device->Backend,start)())
3685                 device->Flags |= DEVICE_RUNNING;
3686             else
3687             {
3688                 aluHandleDisconnect(device);
3689                 alcSetError(device, ALC_INVALID_DEVICE);
3690             }
3691         }
3692         V0(device->Backend,unlock)();
3693     }
3694
3695     if(device) ALCdevice_DecRef(device);
3696 }
3697
3698 ALC_API void ALC_APIENTRY alcCaptureStop(ALCdevice *device)
3699 {
3700     if(!VerifyDevice(&device) || device->Type != Capture)
3701         alcSetError(device, ALC_INVALID_DEVICE);
3702     else
3703     {
3704         V0(device->Backend,lock)();
3705         if((device->Flags&DEVICE_RUNNING))
3706             V0(device->Backend,stop)();
3707         device->Flags &= ~DEVICE_RUNNING;
3708         V0(device->Backend,unlock)();
3709     }
3710
3711     if(device) ALCdevice_DecRef(device);
3712 }
3713
3714 ALC_API void ALC_APIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
3715 {
3716     if(!VerifyDevice(&device) || device->Type != Capture)
3717         alcSetError(device, ALC_INVALID_DEVICE);
3718     else
3719     {
3720         ALCenum err = ALC_INVALID_VALUE;
3721
3722         V0(device->Backend,lock)();
3723         if(samples >= 0 && V0(device->Backend,availableSamples)() >= (ALCuint)samples)
3724             err = V(device->Backend,captureSamples)(buffer, samples);
3725         V0(device->Backend,unlock)();
3726
3727         if(err != ALC_NO_ERROR)
3728             alcSetError(device, err);
3729     }
3730     if(device) ALCdevice_DecRef(device);
3731 }
3732
3733
3734 /************************************************
3735  * ALC loopback functions
3736  ************************************************/
3737
3738 /* alcLoopbackOpenDeviceSOFT
3739  *
3740  * Open a loopback device, for manual rendering.
3741  */
3742 ALC_API ALCdevice* ALC_APIENTRY alcLoopbackOpenDeviceSOFT(const ALCchar *deviceName)
3743 {
3744     ALCbackendFactory *factory;
3745     ALCdevice *device;
3746
3747     DO_INITCONFIG();
3748
3749     /* Make sure the device name, if specified, is us. */
3750     if(deviceName && strcmp(deviceName, alcDefaultName) != 0)
3751     {
3752         alcSetError(NULL, ALC_INVALID_VALUE);
3753         return NULL;
3754     }
3755
3756     device = al_calloc(16, sizeof(ALCdevice));
3757     if(!device)
3758     {
3759         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3760         return NULL;
3761     }
3762
3763     //Validate device
3764     InitRef(&device->ref, 1);
3765     device->Connected = ALC_TRUE;
3766     device->Type = Loopback;
3767     ATOMIC_INIT(&device->LastError, ALC_NO_ERROR);
3768
3769     device->Flags = 0;
3770     VECTOR_INIT(device->Hrtf_List);
3771     AL_STRING_INIT(device->Hrtf_Name);
3772     device->Bs2b = NULL;
3773     device->Uhj_Encoder = NULL;
3774     device->Render_Mode = NormalRender;
3775     AL_STRING_INIT(device->DeviceName);
3776     device->Dry.Buffer = NULL;
3777     device->Dry.NumChannels = 0;
3778     device->VirtOut.Buffer = NULL;
3779     device->VirtOut.NumChannels = 0;
3780     device->RealOut.Buffer = NULL;
3781     device->RealOut.NumChannels = 0;
3782
3783     ATOMIC_INIT(&device->ContextList, NULL);
3784
3785     device->ClockBase = 0;
3786     device->SamplesDone = 0;
3787
3788     device->MaxNoOfSources = 256;
3789     device->AuxiliaryEffectSlotMax = 4;
3790     device->NumAuxSends = MAX_SENDS;
3791
3792     InitUIntMap(&device->BufferMap, ~0);
3793     InitUIntMap(&device->EffectMap, ~0);
3794     InitUIntMap(&device->FilterMap, ~0);
3795
3796     factory = ALCloopbackFactory_getFactory();
3797     device->Backend = V(factory,createBackend)(device, ALCbackend_Loopback);
3798     if(!device->Backend)
3799     {
3800         al_free(device);
3801         alcSetError(NULL, ALC_OUT_OF_MEMORY);
3802         return NULL;
3803     }
3804
3805     //Set output format
3806     device->NumUpdates = 0;
3807     device->UpdateSize = 0;
3808
3809     device->Frequency = DEFAULT_OUTPUT_RATE;
3810     device->FmtChans = DevFmtChannelsDefault;
3811     device->FmtType = DevFmtTypeDefault;
3812     device->IsHeadphones = AL_FALSE;
3813
3814     ConfigValueUInt(NULL, NULL, "sources", &device->MaxNoOfSources);
3815     if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256;
3816
3817     ConfigValueUInt(NULL, NULL, "slots", &device->AuxiliaryEffectSlotMax);
3818     if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4;
3819
3820     ConfigValueUInt(NULL, NULL, "sends", &device->NumAuxSends);
3821     if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS;
3822
3823     device->NumStereoSources = 1;
3824     device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
3825
3826     // Open the "backend"
3827     V(device->Backend,open)("Loopback");
3828
3829     {
3830         ALCdevice *head = ATOMIC_LOAD(&DeviceList);
3831         do {
3832             device->next = head;
3833         } while(!ATOMIC_COMPARE_EXCHANGE_WEAK(ALCdevice*, &DeviceList, &head, device));
3834     }
3835
3836     TRACE("Created device %p\n", device);
3837     return device;
3838 }
3839
3840 /* alcIsRenderFormatSupportedSOFT
3841  *
3842  * Determines if the loopback device supports the given format for rendering.
3843  */
3844 ALC_API ALCboolean ALC_APIENTRY alcIsRenderFormatSupportedSOFT(ALCdevice *device, ALCsizei freq, ALCenum channels, ALCenum type)
3845 {
3846     ALCboolean ret = ALC_FALSE;
3847
3848     if(!VerifyDevice(&device) || device->Type != Loopback)
3849         alcSetError(device, ALC_INVALID_DEVICE);
3850     else if(freq <= 0)
3851         alcSetError(device, ALC_INVALID_VALUE);
3852     else
3853     {
3854         if(IsValidALCType(type) && BytesFromDevFmt(type) > 0 &&
3855            IsValidALCChannels(channels) && ChannelsFromDevFmt(channels) > 0 &&
3856            freq >= MIN_OUTPUT_RATE)
3857             ret = ALC_TRUE;
3858     }
3859     if(device) ALCdevice_DecRef(device);
3860
3861     return ret;
3862 }
3863
3864 /* alcRenderSamplesSOFT
3865  *
3866  * Renders some samples into a buffer, using the format last set by the
3867  * attributes given to alcCreateContext.
3868  */
3869 FORCE_ALIGN ALC_API void ALC_APIENTRY alcRenderSamplesSOFT(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
3870 {
3871     if(!VerifyDevice(&device) || device->Type != Loopback)
3872         alcSetError(device, ALC_INVALID_DEVICE);
3873     else if(samples < 0 || (samples > 0 && buffer == NULL))
3874         alcSetError(device, ALC_INVALID_VALUE);
3875     else
3876         aluMixData(device, buffer, samples);
3877     if(device) ALCdevice_DecRef(device);
3878 }
3879
3880
3881 /************************************************
3882  * ALC DSP pause/resume functions
3883  ************************************************/
3884
3885 /* alcDevicePauseSOFT
3886  *
3887  * Pause the DSP to stop audio processing.
3888  */
3889 ALC_API void ALC_APIENTRY alcDevicePauseSOFT(ALCdevice *device)
3890 {
3891     if(!VerifyDevice(&device) || device->Type != Playback)
3892         alcSetError(device, ALC_INVALID_DEVICE);
3893     else
3894     {
3895         LockLists();
3896         if((device->Flags&DEVICE_RUNNING))
3897             V0(device->Backend,stop)();
3898         device->Flags &= ~DEVICE_RUNNING;
3899         device->Flags |= DEVICE_PAUSED;
3900         UnlockLists();
3901     }
3902     if(device) ALCdevice_DecRef(device);
3903 }
3904
3905 /* alcDeviceResumeSOFT
3906  *
3907  * Resume the DSP to restart audio processing.
3908  */
3909 ALC_API void ALC_APIENTRY alcDeviceResumeSOFT(ALCdevice *device)
3910 {
3911     if(!VerifyDevice(&device) || device->Type != Playback)
3912         alcSetError(device, ALC_INVALID_DEVICE);
3913     else
3914     {
3915         LockLists();
3916         if((device->Flags&DEVICE_PAUSED))
3917         {
3918             device->Flags &= ~DEVICE_PAUSED;
3919             if(ATOMIC_LOAD(&device->ContextList) != NULL)
3920             {
3921                 if(V0(device->Backend,start)() != ALC_FALSE)
3922                     device->Flags |= DEVICE_RUNNING;
3923                 else
3924                 {
3925                     alcSetError(device, ALC_INVALID_DEVICE);
3926                     V0(device->Backend,lock)();
3927                     aluHandleDisconnect(device);
3928                     V0(device->Backend,unlock)();
3929                 }
3930             }
3931         }
3932         UnlockLists();
3933     }
3934     if(device) ALCdevice_DecRef(device);
3935 }
3936
3937
3938 /************************************************
3939  * ALC HRTF functions
3940  ************************************************/
3941
3942 /* alcGetStringiSOFT
3943  *
3944  * Gets a string parameter at the given index.
3945  */
3946 ALC_API const ALCchar* ALC_APIENTRY alcGetStringiSOFT(ALCdevice *device, ALCenum paramName, ALCsizei index)
3947 {
3948     const ALCchar *str = NULL;
3949
3950     if(!VerifyDevice(&device) || device->Type == Capture)
3951         alcSetError(device, ALC_INVALID_DEVICE);
3952     else switch(paramName)
3953     {
3954         case ALC_HRTF_SPECIFIER_SOFT:
3955             if(index >= 0 && (size_t)index < VECTOR_SIZE(device->Hrtf_List))
3956                 str = al_string_get_cstr(VECTOR_ELEM(device->Hrtf_List, index).name);
3957             else
3958                 alcSetError(device, ALC_INVALID_VALUE);
3959             break;
3960
3961         default:
3962             alcSetError(device, ALC_INVALID_ENUM);
3963             break;
3964     }
3965     if(device) ALCdevice_DecRef(device);
3966
3967     return str;
3968 }
3969
3970 /* alcResetDeviceSOFT
3971  *
3972  * Resets the given device output, using the specified attribute list.
3973  */
3974 ALC_API ALCboolean ALC_APIENTRY alcResetDeviceSOFT(ALCdevice *device, const ALCint *attribs)
3975 {
3976     ALCenum err;
3977
3978     LockLists();
3979     if(!VerifyDevice(&device) || device->Type == Capture || !device->Connected)
3980     {
3981         UnlockLists();
3982         alcSetError(device, ALC_INVALID_DEVICE);
3983         if(device) ALCdevice_DecRef(device);
3984         return ALC_FALSE;
3985     }
3986
3987     if((err=UpdateDeviceParams(device, attribs)) != ALC_NO_ERROR)
3988     {
3989         UnlockLists();
3990         alcSetError(device, err);
3991         if(err == ALC_INVALID_DEVICE)
3992         {
3993             V0(device->Backend,lock)();
3994             aluHandleDisconnect(device);
3995             V0(device->Backend,unlock)();
3996         }
3997         ALCdevice_DecRef(device);
3998         return ALC_FALSE;
3999     }
4000     UnlockLists();
4001     ALCdevice_DecRef(device);
4002
4003     return ALC_TRUE;
4004 }