dsound_private.h

   1 /*                      DirectSound
   2  *
   3  * Copyright 1998 Marcus Meissner
   4  * Copyright 1998 Rob Riggs
   5  * Copyright 2000-2001 TransGaming Technologies, Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 /* Linux does not support better timing than 10ms */
  23 #define DS_TIME_RES 2  /* Resolution of multimedia timer */
  24 #define DS_TIME_DEL 10  /* Delay of multimedia timer callback, and duration of HEL fragment */
  25 /* Default refresh count, can be overridden */
  26 #define FAKE_REFRESH_COUNT (1000/DS_TIME_DEL/2)
  27
  28
  29 #ifdef __WINESRC__
  30
  31 #ifdef __APPLE__
  32 #include <OpenAL/al.h>
  33 #include <OpenAL/alc.h>
  34 #else
  35 #include <AL/al.h>
  36 #include <AL/alc.h>
  37 #endif
  38
  39 #define LONGFMT
  40 #else
  41
  42 #include <al.h>
  43 #include <alc.h>
  44
  45 #include <stdio.h>
  46
  47 extern int LogLevel;
  48
  49 #ifdef DEBUG_INFO
  50 #define TRACE(fmt,args...) do {                                                                      \
  51     if(LogLevel >= 3)                                                                                \
  52         fprintf(stderr, "%04x:trace:dsound:%s " fmt, (UINT)GetCurrentThreadId(), __FUNCTION__, ##args);  \
  53 } while(0)
  54 #define WARN(fmt,args...) do {                                                                       \
  55     if(LogLevel >= 2)                                                                                \
  56         fprintf(stderr, "%04x:warn:dsound:%s " fmt, (UINT)GetCurrentThreadId(), __FUNCTION__, ##args);   \
  57 } while(0)
  58 #define FIXME(fmt,args...) do {                                                                      \
  59     if(LogLevel >= 1)                                                                                \
  60         fprintf(stderr, "%04x:fixme:dsound:%s " fmt, (UINT)GetCurrentThreadId(), __FUNCTION__, ##args);  \
  61 } while(0)
  62 #define ERR(fmt,args...) do {                                                                        \
  63     if(LogLevel >= 0)                                                                                \
  64         fprintf(stderr, "%04x:err:dsound:%s " fmt, (UINT)GetCurrentThreadId(), __FUNCTION__, ##args);    \
  65 } while(0)
  66 #else
  67 #define TRACE(args...)
  68 #define WARN(args...)
  69 #define FIXME(args...)
  70 #define ERR(args...)
  71 #endif
  72
  73 const char *wine_dbg_sprintf( const char *format, ... );
  74 const char *wine_dbgstr_wn( const WCHAR *str, int n );
  75 const char *debugstr_guid( const GUID *id );
  76
  77 static inline const char *debugstr_w( const WCHAR *s ) { return wine_dbgstr_wn( s, -1 ); }
  78
  79 #define LONGFMT "l"
  80 #endif
  81
  82
  83 #include "alext.h"
  84 #include "eax.h"
  85
  86 /* Set to 1 to build a DLL that can be used in an app that uses OpenAL itself.
  87  * Thread-local contexts are needed for true concurrency, however. Disallowing
  88  * concurrency can avoid a save and restore of the context. */
  89 #define ALLOW_CONCURRENT_AL 0
  90
  91 /* All openal functions */
  92 extern int openal_loaded;
  93 #ifdef SONAME_LIBOPENAL
  94 extern LPALCCREATECONTEXT palcCreateContext;
  95 extern LPALCMAKECONTEXTCURRENT palcMakeContextCurrent;
  96 extern LPALCPROCESSCONTEXT palcProcessContext;
  97 extern LPALCSUSPENDCONTEXT palcSuspendContext;
  98 extern LPALCDESTROYCONTEXT palcDestroyContext;
  99 extern LPALCGETCURRENTCONTEXT palcGetCurrentContext;
 100 extern LPALCGETCONTEXTSDEVICE palcGetContextsDevice;
 101 extern LPALCOPENDEVICE palcOpenDevice;
 102 extern LPALCCLOSEDEVICE palcCloseDevice;
 103 extern LPALCGETERROR palcGetError;
 104 extern LPALCISEXTENSIONPRESENT palcIsExtensionPresent;
 105 extern LPALCGETPROCADDRESS palcGetProcAddress;
 106 extern LPALCGETENUMVALUE palcGetEnumValue;
 107 extern LPALCGETSTRING palcGetString;
 108 extern LPALCGETINTEGERV palcGetIntegerv;
 109 extern LPALCCAPTUREOPENDEVICE palcCaptureOpenDevice;
 110 extern LPALCCAPTURECLOSEDEVICE palcCaptureCloseDevice;
 111 extern LPALCCAPTURESTART palcCaptureStart;
 112 extern LPALCCAPTURESTOP palcCaptureStop;
 113 extern LPALCCAPTURESAMPLES palcCaptureSamples;
 114 extern LPALENABLE palEnable;
 115 extern LPALDISABLE palDisable;
 116 extern LPALISENABLED palIsEnabled;
 117 extern LPALGETSTRING palGetString;
 118 extern LPALGETBOOLEANV palGetBooleanv;
 119 extern LPALGETINTEGERV palGetIntegerv;
 120 extern LPALGETFLOATV palGetFloatv;
 121 extern LPALGETDOUBLEV palGetDoublev;
 122 extern LPALGETBOOLEAN palGetBoolean;
 123 extern LPALGETINTEGER palGetInteger;
 124 extern LPALGETFLOAT palGetFloat;
 125 extern LPALGETDOUBLE palGetDouble;
 126 extern LPALGETERROR palGetError;
 127 extern LPALISEXTENSIONPRESENT palIsExtensionPresent;
 128 extern LPALGETPROCADDRESS palGetProcAddress;
 129 extern LPALGETENUMVALUE palGetEnumValue;
 130 extern LPALLISTENERF palListenerf;
 131 extern LPALLISTENER3F palListener3f;
 132 extern LPALLISTENERFV palListenerfv;
 133 extern LPALLISTENERI palListeneri;
 134 extern LPALLISTENER3I palListener3i;
 135 extern LPALLISTENERIV palListeneriv;
 136 extern LPALGETLISTENERF palGetListenerf;
 137 extern LPALGETLISTENER3F palGetListener3f;
 138 extern LPALGETLISTENERFV palGetListenerfv;
 139 extern LPALGETLISTENERI palGetListeneri;
 140 extern LPALGETLISTENER3I palGetListener3i;
 141 extern LPALGETLISTENERIV palGetListeneriv;
 142 extern LPALGENSOURCES palGenSources;
 143 extern LPALDELETESOURCES palDeleteSources;
 144 extern LPALISSOURCE palIsSource;
 145 extern LPALSOURCEF palSourcef;
 146 extern LPALSOURCE3F palSource3f;
 147 extern LPALSOURCEFV palSourcefv;
 148 extern LPALSOURCEI palSourcei;
 149 extern LPALSOURCE3I palSource3i;
 150 extern LPALSOURCEIV palSourceiv;
 151 extern LPALGETSOURCEF palGetSourcef;
 152 extern LPALGETSOURCE3F palGetSource3f;
 153 extern LPALGETSOURCEFV palGetSourcefv;
 154 extern LPALGETSOURCEI palGetSourcei;
 155 extern LPALGETSOURCE3I palGetSource3i;
 156 extern LPALGETSOURCEIV palGetSourceiv;
 157 extern LPALSOURCEPLAYV palSourcePlayv;
 158 extern LPALSOURCESTOPV palSourceStopv;
 159 extern LPALSOURCEREWINDV palSourceRewindv;
 160 extern LPALSOURCEPAUSEV palSourcePausev;
 161 extern LPALSOURCEPLAY palSourcePlay;
 162 extern LPALSOURCESTOP palSourceStop;
 163 extern LPALSOURCEREWIND palSourceRewind;
 164 extern LPALSOURCEPAUSE palSourcePause;
 165 extern LPALSOURCEQUEUEBUFFERS palSourceQueueBuffers;
 166 extern LPALSOURCEUNQUEUEBUFFERS palSourceUnqueueBuffers;
 167 extern LPALGENBUFFERS palGenBuffers;
 168 extern LPALDELETEBUFFERS palDeleteBuffers;
 169 extern LPALISBUFFER palIsBuffer;
 170 extern LPALBUFFERF palBufferf;
 171 extern LPALBUFFER3F palBuffer3f;
 172 extern LPALBUFFERFV palBufferfv;
 173 extern LPALBUFFERI palBufferi;
 174 extern LPALBUFFER3I palBuffer3i;
 175 extern LPALBUFFERIV palBufferiv;
 176 extern LPALGETBUFFERF palGetBufferf;
 177 extern LPALGETBUFFER3F palGetBuffer3f;
 178 extern LPALGETBUFFERFV palGetBufferfv;
 179 extern LPALGETBUFFERI palGetBufferi;
 180 extern LPALGETBUFFER3I palGetBuffer3i;
 181 extern LPALGETBUFFERIV palGetBufferiv;
 182 extern LPALBUFFERDATA palBufferData;
 183 extern LPALDOPPLERFACTOR palDopplerFactor;
 184 extern LPALDOPPLERVELOCITY palDopplerVelocity;
 185 extern LPALDISTANCEMODEL palDistanceModel;
 186 extern LPALSPEEDOFSOUND palSpeedOfSound;
 187
 188 #define alcCreateContext palcCreateContext
 189 #define alcMakeContextCurrent palcMakeContextCurrent
 190 #define alcProcessContext palcProcessContext
 191 #define alcSuspendContext palcSuspendContext
 192 #define alcDestroyContext palcDestroyContext
 193 #define alcGetCurrentContext palcGetCurrentContext
 194 #define alcGetContextsDevice palcGetContextsDevice
 195 #define alcOpenDevice palcOpenDevice
 196 #define alcCloseDevice palcCloseDevice
 197 #define alcGetError palcGetError
 198 #define alcIsExtensionPresent palcIsExtensionPresent
 199 #define alcGetProcAddress palcGetProcAddress
 200 #define alcGetEnumValue palcGetEnumValue
 201 #define alcGetString palcGetString
 202 #define alcGetIntegerv palcGetIntegerv
 203 #define alcCaptureOpenDevice palcCaptureOpenDevice
 204 #define alcCaptureCloseDevice palcCaptureCloseDevice
 205 #define alcCaptureStart palcCaptureStart
 206 #define alcCaptureStop palcCaptureStop
 207 #define alcCaptureSamples palcCaptureSamples
 208 #define alEnable palEnable
 209 #define alDisable palDisable
 210 #define alIsEnabled palIsEnabled
 211 #define alGetString palGetString
 212 #define alGetBooleanv palGetBooleanv
 213 #define alGetIntegerv palGetIntegerv
 214 #define alGetFloatv palGetFloatv
 215 #define alGetDoublev palGetDoublev
 216 #define alGetBoolean palGetBoolean
 217 #define alGetInteger palGetInteger
 218 #define alGetFloat palGetFloat
 219 #define alGetDouble palGetDouble
 220 #define alGetError palGetError
 221 #define alIsExtensionPresent palIsExtensionPresent
 222 #define alGetProcAddress palGetProcAddress
 223 #define alGetEnumValue palGetEnumValue
 224 #define alListenerf palListenerf
 225 #define alListener3f palListener3f
 226 #define alListenerfv palListenerfv
 227 #define alListeneri palListeneri
 228 #define alListener3i palListener3i
 229 #define alListeneriv palListeneriv
 230 #define alGetListenerf palGetListenerf
 231 #define alGetListener3f palGetListener3f
 232 #define alGetListenerfv palGetListenerfv
 233 #define alGetListeneri palGetListeneri
 234 #define alGetListener3i palGetListener3i
 235 #define alGetListeneriv palGetListeneriv
 236 #define alGenSources palGenSources
 237 #define alDeleteSources palDeleteSources
 238 #define alIsSource palIsSource
 239 #define alSourcef palSourcef
 240 #define alSource3f palSource3f
 241 #define alSourcefv palSourcefv
 242 #define alSourcei palSourcei
 243 #define alSource3i palSource3i
 244 #define alSourceiv palSourceiv
 245 #define alGetSourcef palGetSourcef
 246 #define alGetSource3f palGetSource3f
 247 #define alGetSourcefv palGetSourcefv
 248 #define alGetSourcei palGetSourcei
 249 #define alGetSource3i palGetSource3i
 250 #define alGetSourceiv palGetSourceiv
 251 #define alSourcePlayv palSourcePlayv
 252 #define alSourceStopv palSourceStopv
 253 #define alSourceRewindv palSourceRewindv
 254 #define alSourcePausev palSourcePausev
 255 #define alSourcePlay palSourcePlay
 256 #define alSourceStop palSourceStop
 257 #define alSourceRewind palSourceRewind
 258 #define alSourcePause palSourcePause
 259 #define alSourceQueueBuffers palSourceQueueBuffers
 260 #define alSourceUnqueueBuffers palSourceUnqueueBuffers
 261 #define alGenBuffers palGenBuffers
 262 #define alDeleteBuffers palDeleteBuffers
 263 #define alIsBuffer palIsBuffer
 264 #define alBufferf palBufferf
 265 #define alBuffer3f palBuffer3f
 266 #define alBufferfv palBufferfv
 267 #define alBufferi palBufferi
 268 #define alBuffer3i palBuffer3i
 269 #define alBufferiv palBufferiv
 270 #define alGetBufferf palGetBufferf
 271 #define alGetBuffer3f palGetBuffer3f
 272 #define alGetBufferfv palGetBufferfv
 273 #define alGetBufferi palGetBufferi
 274 #define alGetBuffer3i palGetBuffer3i
 275 #define alGetBufferiv palGetBufferiv
 276 #define alBufferData palBufferData
 277 #define alDopplerFactor palDopplerFactor
 278 #define alDopplerVelocity palDopplerVelocity
 279 #define alDistanceModel palDistanceModel
 280 #define alSpeedOfSound palSpeedOfSound
 281 #endif
 282
 283 #include <math.h>
 284 #include "wingdi.h"
 285 #include "mmreg.h"
 286
 287 /* OpenAL only allows for 1 single access to the device at the same time */
 288 extern CRITICAL_SECTION openal_crst;
 289
 290 extern const ALCchar *DSOUND_getdevicestrings(void);
 291 extern const ALCchar *DSOUND_getcapturedevicestrings(void);
 292
 293 extern LPALCMAKECONTEXTCURRENT set_context;
 294 extern LPALCGETCURRENTCONTEXT get_context;
 295 extern BOOL local_contexts;
 296
 297 /* Device implementation */
 298 typedef struct DS8Primary DS8Primary;
 299 typedef struct DS8Buffer DS8Buffer;
 300
 301 typedef struct DS8Impl
 302 {
 303     IDirectSound8 IDirectSound8_iface;
 304     IDirectSound IDirectSound_iface;
 305
 306     LONG ref;
 307     BOOL is_8;
 308
 309     LONG *deviceref;
 310     ALCdevice *device;
 311     DS8Primary *primary;
 312
 313     DWORD speaker_config;
 314     DWORD prio_level;
 315     GUID guid;
 316 } DS8Impl;
 317
 318 /* Sample types */
 319 #define AL_BYTE                                  0x1400
 320 #define AL_UNSIGNED_BYTE                         0x1401
 321 #define AL_SHORT                                 0x1402
 322 #define AL_UNSIGNED_SHORT                        0x1403
 323 #define AL_INT                                   0x1404
 324 #define AL_UNSIGNED_INT                          0x1405
 325 #define AL_FLOAT                                 0x1406
 326 #define AL_DOUBLE                                0x1407
 327 #define AL_BYTE3                                 0x1408
 328 #define AL_UNSIGNED_BYTE3                        0x1409
 329 #define AL_MULAW                                 0x1410
 330 #define AL_IMA4                                  0x1411
 331
 332 /* Channel configurations */
 333 #define AL_MONO                                  0x1500
 334 #define AL_STEREO                                0x1501
 335 #define AL_REAR                                  0x1502
 336 #define AL_QUAD                                  0x1503
 337 #define AL_5POINT1                               0x1504 /* (WFX order) */
 338 #define AL_6POINT1                               0x1505 /* (WFX order) */
 339 #define AL_7POINT1                               0x1506 /* (WFX order) */
 340
 341 /* Storage formats */
 342 #define AL_MONO8                                 0x1100
 343 #define AL_MONO16                                0x1101
 344 #define AL_MONO32F                               0x10010
 345 #define AL_STEREO8                               0x1102
 346 #define AL_STEREO16                              0x1103
 347 #define AL_STEREO32F                             0x10011
 348 #define AL_QUAD8                                 0x1204
 349 #define AL_QUAD16                                0x1205
 350 #define AL_QUAD32F                               0x1206
 351 #define AL_REAR8                                 0x1207
 352 #define AL_REAR16                                0x1208
 353 #define AL_REAR32F                               0x1209
 354 #define AL_5POINT1_8                             0x120A
 355 #define AL_5POINT1_16                            0x120B
 356 #define AL_5POINT1_32F                           0x120C
 357 #define AL_6POINT1_8                             0x120D
 358 #define AL_6POINT1_16                            0x120E
 359 #define AL_6POINT1_32F                           0x120F
 360 #define AL_7POINT1_8                             0x1210
 361 #define AL_7POINT1_16                            0x1211
 362 #define AL_7POINT1_32F                           0x1212
 363
 364 enum {
 365     EXT_EFX,
 366     EXT_FLOAT32,
 367     EXT_MCFORMATS,
 368     EXT_STATIC_BUFFER,
 369     SOFT_BUFFER_SAMPLES,
 370     SOFT_BUFFER_SUB_DATA,
 371     SOFT_DEFERRED_UPDATES,
 372
 373     MAX_EXTENSIONS
 374 };
 375
 376 typedef struct ExtALFuncs
 377 {
 378     PFNALBUFFERSUBDATASOFTPROC BufferSubData;
 379     PFNALBUFFERDATASTATICPROC BufferDataStatic;
 380
 381     LPALGENEFFECTS GenEffects;
 382     LPALDELETEEFFECTS DeleteEffects;
 383     LPALEFFECTI Effecti;
 384     LPALEFFECTF Effectf;
 385
 386     LPALGENAUXILIARYEFFECTSLOTS GenAuxiliaryEffectSlots;
 387     LPALDELETEAUXILIARYEFFECTSLOTS DeleteAuxiliaryEffectSlots;
 388     LPALAUXILIARYEFFECTSLOTI AuxiliaryEffectSloti;
 389
 390     void (AL_APIENTRY*BufferSamplesSOFT)(ALuint,ALuint,ALenum,ALsizei,ALenum,ALenum,const ALvoid*);
 391     void (AL_APIENTRY*BufferSubSamplesSOFT)(ALuint,ALsizei,ALsizei,ALenum,ALenum,const ALvoid*);
 392     void (AL_APIENTRY*GetBufferSamplesSOFT)(ALuint,ALsizei,ALsizei,ALenum,ALenum,ALvoid*);
 393     ALboolean (AL_APIENTRY*IsBufferFormatSupportedSOFT)(ALenum);
 394
 395     void (AL_APIENTRY*DeferUpdatesSOFT)(void);
 396     void (AL_APIENTRY*ProcessUpdatesSOFT)(void);
 397 } ExtALFuncs;
 398
 399 struct DS8Primary
 400 {
 401     IDirectSoundBuffer IDirectSoundBuffer_iface;
 402     IDirectSound3DListener IDirectSound3DListener_iface;
 403     IKsPropertySet IKsPropertySet_iface;
 404
 405     LONG ref, ds3d_ref, prop_ref;
 406     IDirectSoundBuffer8 *write_emu;
 407     DS8Impl *parent;
 408
 409     CRITICAL_SECTION crst;
 410
 411     DWORD buf_size;
 412     BOOL stopped;
 413     DWORD flags;
 414     WAVEFORMATEXTENSIBLE format;
 415     ALCcontext *ctx;
 416
 417     ALboolean SupportedExt[MAX_EXTENSIONS];
 418
 419     ALuint *sources;
 420     DWORD nsources, sizesources;
 421     DWORD max_sources;
 422     DS8Buffer **buffers;
 423     DWORD nbuffers, sizebuffers;
 424     DS8Buffer **notifies;
 425     DWORD nnotifies, sizenotifies;
 426
 427     UINT timer_id;
 428     DWORD timer_res;
 429     HANDLE thread_hdl;
 430     DWORD thread_id;
 431
 432     ALuint auxslot;
 433     ALuint effect;
 434     EAXLISTENERPROPERTIES eax_prop;
 435
 436     ExtALFuncs ExtAL;
 437     union {
 438         struct {
 439             BOOL pos : 1;
 440             BOOL vel : 1;
 441             BOOL orientation : 1;
 442             BOOL distancefactor : 1;
 443             BOOL rollofffactor : 1;
 444             BOOL dopplerfactor : 1;
 445             BOOL effect : 1;
 446         } bit;
 447         int flags;
 448     } dirty;
 449     ALfloat rollofffactor;
 450     DS3DLISTENER listen;
 451
 452     void (AL_APIENTRY*DeferUpdates)(void);
 453     void (AL_APIENTRY*ProcessUpdates)(void);
 454 };
 455
 456
 457 typedef struct DS8Data {
 458     LONG ref;
 459
 460     /* Lock was called and unlock isn't? */
 461     LONG locked;
 462
 463     WAVEFORMATEXTENSIBLE format;
 464
 465     ALuint buf_size;
 466     ALenum buf_format;
 467     ALenum in_type, in_chans;
 468     DWORD dsbflags;
 469     BYTE *data;
 470     ALuint *buffers;
 471     ALuint numsegs;
 472     ALuint segsize;
 473     ALuint lastsegsize;
 474 } DS8Data;
 475 /* Amount of buffers that have to be queued when
 476  * bufferdatastatic and buffersubdata are not available */
 477 #define QBUFFERS 3
 478
 479 struct DS8Buffer
 480 {
 481     IDirectSoundBuffer8 IDirectSoundBuffer8_iface;
 482     IDirectSoundBuffer IDirectSoundBuffer_iface;
 483     IDirectSound3DBuffer IDirectSound3DBuffer_iface;
 484     IDirectSoundNotify IDirectSoundNotify_iface;
 485     IKsPropertySet IKsPropertySet_iface;
 486
 487     LONG ref, ds3d_ref, not_ref, prop_ref;
 488     LONG all_ref;
 489
 490     DWORD ds3dmode;
 491     DS8Primary *primary;
 492     DS8Data *buffer;
 493     ALuint source;
 494     ALuint curidx;
 495     BOOL isplaying, islooping, bufferlost;
 496     ALCcontext *ctx;
 497     ExtALFuncs *ExtAL;
 498     CRITICAL_SECTION *crst;
 499
 500     DS3DBUFFER ds3dbuffer;
 501     union {
 502         struct {
 503             BOOL pos : 1;
 504             BOOL vel : 1;
 505             BOOL cone_angles : 1;
 506             BOOL cone_orient : 1;
 507             BOOL cone_outsidevolume : 1;
 508             BOOL min_distance : 1;
 509             BOOL max_distance : 1;
 510             BOOL mode : 1;
 511         } bit;
 512         int flags;
 513     } dirty;
 514
 515     DWORD nnotify, lastpos;
 516     DSBPOSITIONNOTIFY *notify;
 517 };
 518
 519 extern HRESULT DS8Primary_Create(DS8Primary **prim, DS8Impl *parent);
 520 extern void DS8Primary_Destroy(DS8Primary *prim);
 521
 522 extern HRESULT DS8Buffer_Create(DS8Buffer **ppv, DS8Primary *parent, IDirectSoundBuffer *orig);
 523 extern void DS8Buffer_Destroy(DS8Buffer *buf);
 524
 525 static inline ALdouble gain_to_mB(ALdouble gain)
 526 {
 527     return log10(gain) * 2000.0;
 528 }
 529 static inline ALdouble mB_to_gain(ALdouble millibels)
 530 {
 531     return pow(10.0, millibels/2000.0);
 532 }
 533
 534 static inline LONG clampI(LONG val, LONG minval, LONG maxval)
 535 {
 536     if(val >= maxval) return maxval;
 537     if(val <= minval) return minval;
 538     return val;
 539 }
 540 static inline ULONG clampU(ULONG val, ULONG minval, ULONG maxval)
 541 {
 542     if(val >= maxval) return maxval;
 543     if(val <= minval) return minval;
 544     return val;
 545 }
 546 static inline FLOAT clampF(FLOAT val, FLOAT minval, FLOAT maxval)
 547 {
 548     if(val >= maxval) return maxval;
 549     if(val <= minval) return minval;
 550     return val;
 551 }
 552
 553
 554 #define checkALError() do {                                                   \
 555     ALenum err = alGetError();                                                \
 556     if(err != AL_NO_ERROR)                                                    \
 557         ERR(">>>>>>>>>>>> Received AL error %#x on context %p, %s:%u\n",      \
 558             err, get_context(), __FUNCTION__, __LINE__);                      \
 559 } while (0)
 560
 561 #define checkALCError(dev) do {                                               \
 562     ALenum err = alcGetError(dev);                                            \
 563     if(err != ALC_NO_ERROR)                                                   \
 564         ERR(">>>>>>>>>>>> Received ALC error %#x on device %p, %s:%u\n",      \
 565             err, dev, __FUNCTION__, __LINE__);                                \
 566 } while(0)
 567
 568 #if ALLOW_CONCURRENT_AL
 569
 570 #define setALContext(actx) do {                                               \
 571     ALCcontext *__old_ctx, *cur_ctx = actx;                                   \
 572     if(!local_contexts) EnterCriticalSection(&openal_crst);                   \
 573     __old_ctx = get_context();                                                \
 574     if(__old_ctx != cur_ctx && set_context(cur_ctx) == ALC_FALSE) {           \
 575         ERR("Couldn't set current context!!\n");                              \
 576         checkALCError(alcGetContextsDevice(cur_ctx));                         \
 577     }
 578 /* Only restore a NULL context if using global contexts, for TLS contexts always restore */
 579 #define popALContext()                                                        \
 580     if(__old_ctx != cur_ctx && (local_contexts || __old_ctx) &&               \
 581        set_context(__old_ctx) == ALC_FALSE) {                                 \
 582         ERR("Couldn't restore old context!!\n");                              \
 583         checkALCError(alcGetContextsDevice(__old_ctx));                       \
 584     }                                                                         \
 585     if (!local_contexts) LeaveCriticalSection(&openal_crst);                  \
 586 } while(0)
 587
 588 #else
 589
 590 #define setALContext(actx) do {                                               \
 591     ALCcontext *cur_ctx = actx;                                               \
 592     if(!local_contexts) EnterCriticalSection(&openal_crst);                   \
 593     if(set_context(cur_ctx) == ALC_FALSE) {                                   \
 594         ERR("Couldn't set current context!!\n");                              \
 595         checkALCError(alcGetContextsDevice(cur_ctx));                         \
 596     }
 597 #define popALContext()                                                        \
 598     if (!local_contexts) LeaveCriticalSection(&openal_crst);                  \
 599 } while (0)
 600
 601 #endif
 602
 603 HRESULT DSOUND_Create(REFIID riid, void **ppDS);
 604 HRESULT DSOUND_Create8(REFIID riid, void **ppDS);
 605 HRESULT DSOUND_FullDuplexCreate(REFIID riid, void **ppDSFD);
 606 HRESULT IKsPrivatePropertySetImpl_Create(REFIID riid, void **piks);
 607 HRESULT DSOUND_CaptureCreate(REFIID riid, void **ppDSC);
 608 HRESULT DSOUND_CaptureCreate8(REFIID riid, void **ppDSC8);
 609
 610 extern const GUID DSOUND_renderer_guid;
 611 extern const GUID DSOUND_capture_guid;