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Make alcSetError static
[openal-soft/android.git] / Alc / ALc.c
blobe4842eb5fca9e40bdf133c60216a7baa9437ad7e
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., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, 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 "AL/al.h"
33 #include "AL/alc.h"
34 #include "alThunk.h"
35 #include "alSource.h"
36 #include "alBuffer.h"
37 #include "alAuxEffectSlot.h"
38 #include "alError.h"
39 #include "bs2b.h"
40 #include "alu.h"
41
42
43 #define EmptyFuncs { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL }
44 static struct BackendInfo BackendList[] = {
45 #ifdef HAVE_PULSEAUDIO
46 { "pulse", alc_pulse_init, alc_pulse_deinit, alc_pulse_probe, EmptyFuncs },
47 #endif
48 #ifdef HAVE_ALSA
49 { "alsa", alc_alsa_init, alc_alsa_deinit, alc_alsa_probe, EmptyFuncs },
50 #endif
51 #ifdef HAVE_COREAUDIO
52 { "core", alc_ca_init, alc_ca_deinit, alc_ca_probe, EmptyFuncs },
53 #endif
54 #ifdef HAVE_OSS
55 { "oss", alc_oss_init, alc_oss_deinit, alc_oss_probe, EmptyFuncs },
56 #endif
57 #ifdef HAVE_SOLARIS
58 { "solaris", alc_solaris_init, alc_solaris_deinit, alc_solaris_probe, EmptyFuncs },
59 #endif
60 #ifdef HAVE_SNDIO
61 { "sndio", alc_sndio_init, alc_sndio_deinit, alc_sndio_probe, EmptyFuncs },
62 #endif
63 #ifdef HAVE_MMDEVAPI
64 { "mmdevapi", alcMMDevApiInit, alcMMDevApiDeinit, alcMMDevApiProbe, EmptyFuncs },
65 #endif
66 #ifdef HAVE_DSOUND
67 { "dsound", alcDSoundInit, alcDSoundDeinit, alcDSoundProbe, EmptyFuncs },
68 #endif
69 #ifdef HAVE_WINMM
70 { "winmm", alcWinMMInit, alcWinMMDeinit, alcWinMMProbe, EmptyFuncs },
71 #endif
72 #ifdef HAVE_PORTAUDIO
73 { "port", alc_pa_init, alc_pa_deinit, alc_pa_probe, EmptyFuncs },
74 #endif
75 #ifdef HAVE_OPENSL
76 { "opensl", alc_opensl_init, alc_opensl_deinit, alc_opensl_probe, EmptyFuncs },
77 #endif
78
79 { "null", alc_null_init, alc_null_deinit, alc_null_probe, EmptyFuncs },
80 #ifdef HAVE_WAVE
81 { "wave", alc_wave_init, alc_wave_deinit, alc_wave_probe, EmptyFuncs },
82 #endif
83
84 { NULL, NULL, NULL, NULL, EmptyFuncs }
85 };
86 static struct BackendInfo BackendLoopback = {
87 "loopback", alc_loopback_init, alc_loopback_deinit, alc_loopback_probe, EmptyFuncs
88 };
89 #undef EmptyFuncs
90
91 static struct BackendInfo PlaybackBackend;
92 static struct BackendInfo CaptureBackend;
93
94 ///////////////////////////////////////////////////////
95 // STRING and EXTENSIONS
96
97 typedef struct ALCfunction {
98 const ALCchar *funcName;
99 ALCvoid *address;
100 } ALCfunction;
101
102 typedef struct ALCenums {
103 const ALCchar *enumName;
104 ALCenum value;
105 } ALCenums;
106
107
108 static const ALCfunction alcFunctions[] = {
109 { "alcCreateContext", (ALCvoid *) alcCreateContext },
110 { "alcMakeContextCurrent", (ALCvoid *) alcMakeContextCurrent },
111 { "alcProcessContext", (ALCvoid *) alcProcessContext },
112 { "alcSuspendContext", (ALCvoid *) alcSuspendContext },
113 { "alcDestroyContext", (ALCvoid *) alcDestroyContext },
114 { "alcGetCurrentContext", (ALCvoid *) alcGetCurrentContext },
115 { "alcGetContextsDevice", (ALCvoid *) alcGetContextsDevice },
116 { "alcOpenDevice", (ALCvoid *) alcOpenDevice },
117 { "alcCloseDevice", (ALCvoid *) alcCloseDevice },
118 { "alcGetError", (ALCvoid *) alcGetError },
119 { "alcIsExtensionPresent", (ALCvoid *) alcIsExtensionPresent },
120 { "alcGetProcAddress", (ALCvoid *) alcGetProcAddress },
121 { "alcGetEnumValue", (ALCvoid *) alcGetEnumValue },
122 { "alcGetString", (ALCvoid *) alcGetString },
123 { "alcGetIntegerv", (ALCvoid *) alcGetIntegerv },
124 { "alcCaptureOpenDevice", (ALCvoid *) alcCaptureOpenDevice },
125 { "alcCaptureCloseDevice", (ALCvoid *) alcCaptureCloseDevice },
126 { "alcCaptureStart", (ALCvoid *) alcCaptureStart },
127 { "alcCaptureStop", (ALCvoid *) alcCaptureStop },
128 { "alcCaptureSamples", (ALCvoid *) alcCaptureSamples },
129
130 { "alcSetThreadContext", (ALCvoid *) alcSetThreadContext },
131 { "alcGetThreadContext", (ALCvoid *) alcGetThreadContext },
132
133 { "alcLoopbackOpenDeviceSOFT", (ALCvoid *) alcLoopbackOpenDeviceSOFT},
134 { "alcIsRenderFormatSupportedSOFT",(ALCvoid *) alcIsRenderFormatSupportedSOFT},
135 { "alcRenderSamplesSOFT", (ALCvoid *) alcRenderSamplesSOFT },
136
137 { "alEnable", (ALCvoid *) alEnable },
138 { "alDisable", (ALCvoid *) alDisable },
139 { "alIsEnabled", (ALCvoid *) alIsEnabled },
140 { "alGetString", (ALCvoid *) alGetString },
141 { "alGetBooleanv", (ALCvoid *) alGetBooleanv },
142 { "alGetIntegerv", (ALCvoid *) alGetIntegerv },
143 { "alGetFloatv", (ALCvoid *) alGetFloatv },
144 { "alGetDoublev", (ALCvoid *) alGetDoublev },
145 { "alGetBoolean", (ALCvoid *) alGetBoolean },
146 { "alGetInteger", (ALCvoid *) alGetInteger },
147 { "alGetFloat", (ALCvoid *) alGetFloat },
148 { "alGetDouble", (ALCvoid *) alGetDouble },
149 { "alGetError", (ALCvoid *) alGetError },
150 { "alIsExtensionPresent", (ALCvoid *) alIsExtensionPresent },
151 { "alGetProcAddress", (ALCvoid *) alGetProcAddress },
152 { "alGetEnumValue", (ALCvoid *) alGetEnumValue },
153 { "alListenerf", (ALCvoid *) alListenerf },
154 { "alListener3f", (ALCvoid *) alListener3f },
155 { "alListenerfv", (ALCvoid *) alListenerfv },
156 { "alListeneri", (ALCvoid *) alListeneri },
157 { "alListener3i", (ALCvoid *) alListener3i },
158 { "alListeneriv", (ALCvoid *) alListeneriv },
159 { "alGetListenerf", (ALCvoid *) alGetListenerf },
160 { "alGetListener3f", (ALCvoid *) alGetListener3f },
161 { "alGetListenerfv", (ALCvoid *) alGetListenerfv },
162 { "alGetListeneri", (ALCvoid *) alGetListeneri },
163 { "alGetListener3i", (ALCvoid *) alGetListener3i },
164 { "alGetListeneriv", (ALCvoid *) alGetListeneriv },
165 { "alGenSources", (ALCvoid *) alGenSources },
166 { "alDeleteSources", (ALCvoid *) alDeleteSources },
167 { "alIsSource", (ALCvoid *) alIsSource },
168 { "alSourcef", (ALCvoid *) alSourcef },
169 { "alSource3f", (ALCvoid *) alSource3f },
170 { "alSourcefv", (ALCvoid *) alSourcefv },
171 { "alSourcei", (ALCvoid *) alSourcei },
172 { "alSource3i", (ALCvoid *) alSource3i },
173 { "alSourceiv", (ALCvoid *) alSourceiv },
174 { "alGetSourcef", (ALCvoid *) alGetSourcef },
175 { "alGetSource3f", (ALCvoid *) alGetSource3f },
176 { "alGetSourcefv", (ALCvoid *) alGetSourcefv },
177 { "alGetSourcei", (ALCvoid *) alGetSourcei },
178 { "alGetSource3i", (ALCvoid *) alGetSource3i },
179 { "alGetSourceiv", (ALCvoid *) alGetSourceiv },
180 { "alSourcePlayv", (ALCvoid *) alSourcePlayv },
181 { "alSourceStopv", (ALCvoid *) alSourceStopv },
182 { "alSourceRewindv", (ALCvoid *) alSourceRewindv },
183 { "alSourcePausev", (ALCvoid *) alSourcePausev },
184 { "alSourcePlay", (ALCvoid *) alSourcePlay },
185 { "alSourceStop", (ALCvoid *) alSourceStop },
186 { "alSourceRewind", (ALCvoid *) alSourceRewind },
187 { "alSourcePause", (ALCvoid *) alSourcePause },
188 { "alSourceQueueBuffers", (ALCvoid *) alSourceQueueBuffers },
189 { "alSourceUnqueueBuffers", (ALCvoid *) alSourceUnqueueBuffers },
190 { "alGenBuffers", (ALCvoid *) alGenBuffers },
191 { "alDeleteBuffers", (ALCvoid *) alDeleteBuffers },
192 { "alIsBuffer", (ALCvoid *) alIsBuffer },
193 { "alBufferData", (ALCvoid *) alBufferData },
194 { "alBufferf", (ALCvoid *) alBufferf },
195 { "alBuffer3f", (ALCvoid *) alBuffer3f },
196 { "alBufferfv", (ALCvoid *) alBufferfv },
197 { "alBufferi", (ALCvoid *) alBufferi },
198 { "alBuffer3i", (ALCvoid *) alBuffer3i },
199 { "alBufferiv", (ALCvoid *) alBufferiv },
200 { "alGetBufferf", (ALCvoid *) alGetBufferf },
201 { "alGetBuffer3f", (ALCvoid *) alGetBuffer3f },
202 { "alGetBufferfv", (ALCvoid *) alGetBufferfv },
203 { "alGetBufferi", (ALCvoid *) alGetBufferi },
204 { "alGetBuffer3i", (ALCvoid *) alGetBuffer3i },
205 { "alGetBufferiv", (ALCvoid *) alGetBufferiv },
206 { "alDopplerFactor", (ALCvoid *) alDopplerFactor },
207 { "alDopplerVelocity", (ALCvoid *) alDopplerVelocity },
208 { "alSpeedOfSound", (ALCvoid *) alSpeedOfSound },
209 { "alDistanceModel", (ALCvoid *) alDistanceModel },
210
211 { "alGenFilters", (ALCvoid *) alGenFilters },
212 { "alDeleteFilters", (ALCvoid *) alDeleteFilters },
213 { "alIsFilter", (ALCvoid *) alIsFilter },
214 { "alFilteri", (ALCvoid *) alFilteri },
215 { "alFilteriv", (ALCvoid *) alFilteriv },
216 { "alFilterf", (ALCvoid *) alFilterf },
217 { "alFilterfv", (ALCvoid *) alFilterfv },
218 { "alGetFilteri", (ALCvoid *) alGetFilteri },
219 { "alGetFilteriv", (ALCvoid *) alGetFilteriv },
220 { "alGetFilterf", (ALCvoid *) alGetFilterf },
221 { "alGetFilterfv", (ALCvoid *) alGetFilterfv },
222 { "alGenEffects", (ALCvoid *) alGenEffects },
223 { "alDeleteEffects", (ALCvoid *) alDeleteEffects },
224 { "alIsEffect", (ALCvoid *) alIsEffect },
225 { "alEffecti", (ALCvoid *) alEffecti },
226 { "alEffectiv", (ALCvoid *) alEffectiv },
227 { "alEffectf", (ALCvoid *) alEffectf },
228 { "alEffectfv", (ALCvoid *) alEffectfv },
229 { "alGetEffecti", (ALCvoid *) alGetEffecti },
230 { "alGetEffectiv", (ALCvoid *) alGetEffectiv },
231 { "alGetEffectf", (ALCvoid *) alGetEffectf },
232 { "alGetEffectfv", (ALCvoid *) alGetEffectfv },
233 { "alGenAuxiliaryEffectSlots", (ALCvoid *) alGenAuxiliaryEffectSlots},
234 { "alDeleteAuxiliaryEffectSlots",(ALCvoid *) alDeleteAuxiliaryEffectSlots},
235 { "alIsAuxiliaryEffectSlot", (ALCvoid *) alIsAuxiliaryEffectSlot },
236 { "alAuxiliaryEffectSloti", (ALCvoid *) alAuxiliaryEffectSloti },
237 { "alAuxiliaryEffectSlotiv", (ALCvoid *) alAuxiliaryEffectSlotiv },
238 { "alAuxiliaryEffectSlotf", (ALCvoid *) alAuxiliaryEffectSlotf },
239 { "alAuxiliaryEffectSlotfv", (ALCvoid *) alAuxiliaryEffectSlotfv },
240 { "alGetAuxiliaryEffectSloti", (ALCvoid *) alGetAuxiliaryEffectSloti},
241 { "alGetAuxiliaryEffectSlotiv", (ALCvoid *) alGetAuxiliaryEffectSlotiv},
242 { "alGetAuxiliaryEffectSlotf", (ALCvoid *) alGetAuxiliaryEffectSlotf},
243 { "alGetAuxiliaryEffectSlotfv", (ALCvoid *) alGetAuxiliaryEffectSlotfv},
244
245 { "alBufferSubDataSOFT", (ALCvoid *) alBufferSubDataSOFT },
246
247 { "alBufferSamplesSOFT", (ALCvoid *) alBufferSamplesSOFT },
248 { "alBufferSubSamplesSOFT", (ALCvoid *) alBufferSubSamplesSOFT },
249 { "alGetBufferSamplesSOFT", (ALCvoid *) alGetBufferSamplesSOFT },
250 { "alIsBufferFormatSupportedSOFT",(ALCvoid *) alIsBufferFormatSupportedSOFT},
251
252 { "alDeferUpdatesSOFT", (ALCvoid *) alDeferUpdatesSOFT },
253 { "alProcessUpdatesSOFT", (ALCvoid *) alProcessUpdatesSOFT },
254
255 { NULL, (ALCvoid *) NULL }
256 };
257
258 static const ALCenums enumeration[] = {
259 // Types
260 { "ALC_INVALID", ALC_INVALID },
261 { "ALC_FALSE", ALC_FALSE },
262 { "ALC_TRUE", ALC_TRUE },
263
264 // ALC Properties
265 { "ALC_MAJOR_VERSION", ALC_MAJOR_VERSION },
266 { "ALC_MINOR_VERSION", ALC_MINOR_VERSION },
267 { "ALC_ATTRIBUTES_SIZE", ALC_ATTRIBUTES_SIZE },
268 { "ALC_ALL_ATTRIBUTES", ALC_ALL_ATTRIBUTES },
269 { "ALC_DEFAULT_DEVICE_SPECIFIER", ALC_DEFAULT_DEVICE_SPECIFIER },
270 { "ALC_DEVICE_SPECIFIER", ALC_DEVICE_SPECIFIER },
271 { "ALC_ALL_DEVICES_SPECIFIER", ALC_ALL_DEVICES_SPECIFIER },
272 { "ALC_DEFAULT_ALL_DEVICES_SPECIFIER", ALC_DEFAULT_ALL_DEVICES_SPECIFIER },
273 { "ALC_EXTENSIONS", ALC_EXTENSIONS },
274 { "ALC_FREQUENCY", ALC_FREQUENCY },
275 { "ALC_REFRESH", ALC_REFRESH },
276 { "ALC_SYNC", ALC_SYNC },
277 { "ALC_MONO_SOURCES", ALC_MONO_SOURCES },
278 { "ALC_STEREO_SOURCES", ALC_STEREO_SOURCES },
279 { "ALC_CAPTURE_DEVICE_SPECIFIER", ALC_CAPTURE_DEVICE_SPECIFIER },
280 { "ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER", ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER},
281 { "ALC_CAPTURE_SAMPLES", ALC_CAPTURE_SAMPLES },
282 { "ALC_CONNECTED", ALC_CONNECTED },
283
284 // EFX Properties
285 { "ALC_EFX_MAJOR_VERSION", ALC_EFX_MAJOR_VERSION },
286 { "ALC_EFX_MINOR_VERSION", ALC_EFX_MINOR_VERSION },
287 { "ALC_MAX_AUXILIARY_SENDS", ALC_MAX_AUXILIARY_SENDS },
288
289 // Loopback device Properties
290 { "ALC_FORMAT_CHANNELS_SOFT", ALC_FORMAT_CHANNELS_SOFT },
291 { "ALC_FORMAT_TYPE_SOFT", ALC_FORMAT_TYPE_SOFT },
292
293 // Buffer Channel Configurations
294 { "ALC_MONO", ALC_MONO },
295 { "ALC_STEREO", ALC_STEREO },
296 { "ALC_QUAD", ALC_QUAD },
297 { "ALC_5POINT1", ALC_5POINT1 },
298 { "ALC_6POINT1", ALC_6POINT1 },
299 { "ALC_7POINT1", ALC_7POINT1 },
300
301 // Buffer Sample Types
302 { "ALC_BYTE", ALC_BYTE },
303 { "ALC_UNSIGNED_BYTE", ALC_UNSIGNED_BYTE },
304 { "ALC_SHORT", ALC_SHORT },
305 { "ALC_UNSIGNED_SHORT", ALC_UNSIGNED_SHORT },
306 { "ALC_INT", ALC_INT },
307 { "ALC_UNSIGNED_INT", ALC_UNSIGNED_INT },
308 { "ALC_FLOAT", ALC_FLOAT },
309
310 // ALC Error Message
311 { "ALC_NO_ERROR", ALC_NO_ERROR },
312 { "ALC_INVALID_DEVICE", ALC_INVALID_DEVICE },
313 { "ALC_INVALID_CONTEXT", ALC_INVALID_CONTEXT },
314 { "ALC_INVALID_ENUM", ALC_INVALID_ENUM },
315 { "ALC_INVALID_VALUE", ALC_INVALID_VALUE },
316 { "ALC_OUT_OF_MEMORY", ALC_OUT_OF_MEMORY },
317
318 { NULL, (ALCenum)0 }
319 };
320 // Error strings
321 static const ALCchar alcNoError[] = "No Error";
322 static const ALCchar alcErrInvalidDevice[] = "Invalid Device";
323 static const ALCchar alcErrInvalidContext[] = "Invalid Context";
324 static const ALCchar alcErrInvalidEnum[] = "Invalid Enum";
325 static const ALCchar alcErrInvalidValue[] = "Invalid Value";
326 static const ALCchar alcErrOutOfMemory[] = "Out of Memory";
327
328 /* Device lists. Sizes only include the first ending null character, not the
329 * second */
330 static ALCchar *alcDeviceList;
331 static size_t alcDeviceListSize;
332 static ALCchar *alcAllDeviceList;
333 static size_t alcAllDeviceListSize;
334 static ALCchar *alcCaptureDeviceList;
335 static size_t alcCaptureDeviceListSize;
336 /* Default is always the first in the list */
337 static ALCchar *alcDefaultDeviceSpecifier;
338 static ALCchar *alcDefaultAllDeviceSpecifier;
339 static ALCchar *alcCaptureDefaultDeviceSpecifier;
340
341
342 static const ALCchar alcNoDeviceExtList[] =
343 "ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE "
344 "ALC_EXT_thread_local_context ALC_SOFTX_loopback_device";
345 static const ALCchar alcExtensionList[] =
346 "ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE "
347 "ALC_EXT_DEDICATED ALC_EXT_disconnect ALC_EXT_EFX "
348 "ALC_EXT_thread_local_context ALC_SOFTX_loopback_device";
349 static const ALCint alcMajorVersion = 1;
350 static const ALCint alcMinorVersion = 1;
351
352 static const ALCint alcEFXMajorVersion = 1;
353 static const ALCint alcEFXMinorVersion = 0;
354
355 ///////////////////////////////////////////////////////
356
357
358 ///////////////////////////////////////////////////////
359 // Global Variables
360
361 static CRITICAL_SECTION ListLock;
362
363 /* Device List */
364 static ALCdevice *volatile DeviceList = NULL;
365
366 // Thread-local current context
367 static pthread_key_t LocalContext;
368 // Process-wide current context
369 static ALCcontext *GlobalContext;
370
371 /* Device Error */
372 static volatile ALCenum g_eLastNullDeviceError = ALC_NO_ERROR;
373
374 // Default context extensions
375 static const ALchar alExtList[] =
376 "AL_EXT_DOUBLE AL_EXT_EXPONENT_DISTANCE AL_EXT_FLOAT32 AL_EXT_IMA4 "
377 "AL_EXT_LINEAR_DISTANCE AL_EXT_MCFORMATS AL_EXT_MULAW "
378 "AL_EXT_MULAW_MCFORMATS AL_EXT_OFFSET AL_EXT_source_distance_model "
379 "AL_LOKI_quadriphonic AL_SOFTX_buffer_samples AL_SOFT_buffer_sub_data "
380 "AL_SOFTX_deferred_updates AL_SOFT_loop_points "
381 "AL_SOFTX_non_virtual_channels";
382
383 // Mixing Priority Level
384 ALint RTPrioLevel;
385
386 // Output Log File
387 FILE *LogFile;
388
389 // Output Log Level
390 #ifdef _DEBUG
391 enum LogLevel LogLevel = LogWarning;
392 #else
393 enum LogLevel LogLevel = LogError;
394 #endif
395
396 // Cone scalar
397 ALdouble ConeScale = 0.5;
398
399 // Localized Z scalar for mono sources
400 ALdouble ZScale = 1.0;
401
402 /* Flag to trap ALC device errors */
403 static ALCboolean TrapALCError = ALC_FALSE;
404
405 /* One-time configuration init control */
406 static pthread_once_t alc_config_once = PTHREAD_ONCE_INIT;
407
408 ///////////////////////////////////////////////////////
409
410
411 ///////////////////////////////////////////////////////
412 // ALC Related helper functions
413 static void ReleaseALC(ALCboolean doclose);
414 static void ReleaseThreadCtx(void *ptr);
415
416 static void alc_initconfig(void);
417 #define DO_INITCONFIG() pthread_once(&alc_config_once, alc_initconfig)
418
419 #if defined(_WIN32)
420 static void alc_init(void);
421 static void alc_deinit(void);
422 static void alc_deinit_safe(void);
423
424 #ifndef AL_LIBTYPE_STATIC
425 UIntMap TlsDestructor;
426
427 BOOL APIENTRY DllMain(HANDLE hModule,DWORD ul_reason_for_call,LPVOID lpReserved)
428 {
429 ALsizei i;
430 (void)hModule;
431
432 // Perform actions based on the reason for calling.
433 switch(ul_reason_for_call)
434 {
435 case DLL_PROCESS_ATTACH:
436 InitUIntMap(&TlsDestructor, ~0);
437 alc_init();
438 break;
439
440 case DLL_THREAD_DETACH:
441 LockUIntMapRead(&TlsDestructor);
442 for(i = 0;i < TlsDestructor.size;i++)
443 {
444 void *ptr = pthread_getspecific(TlsDestructor.array[i].key);
445 void (*callback)(void*) = (void(*)(void*))TlsDestructor.array[i].value;
446 if(ptr && callback)
447 callback(ptr);
448 }
449 UnlockUIntMapRead(&TlsDestructor);
450 break;
451
452 case DLL_PROCESS_DETACH:
453 if(!lpReserved)
454 alc_deinit();
455 else
456 alc_deinit_safe();
457 ResetUIntMap(&TlsDestructor);
458 break;
459 }
460 return TRUE;
461 }
462 #elif defined(_MSC_VER)
463 #pragma section(".CRT$XCU",read)
464 static void alc_constructor(void);
465 static void alc_destructor(void);
466 __declspec(allocate(".CRT$XCU")) void (__cdecl* alc_constructor_)(void) = alc_constructor;
467
468 static void alc_constructor(void)
469 {
470 atexit(alc_destructor);
471 alc_init();
472 }
473
474 static void alc_destructor(void)
475 {
476 alc_deinit();
477 }
478 #elif defined(HAVE_GCC_DESTRUCTOR)
479 static void alc_init(void) __attribute__((constructor));
480 static void alc_deinit(void) __attribute__((destructor));
481 #else
482 #error "No static initialization available on this platform!"
483 #endif
484 #elif defined(HAVE_GCC_DESTRUCTOR)
485 static void alc_init(void) __attribute__((constructor));
486 static void alc_deinit(void) __attribute__((destructor));
487 #else
488 #error "No global initialization available on this platform!"
489 #endif
490
491 static void alc_init(void)
492 {
493 const char *str;
494
495 LogFile = stderr;
496
497 str = getenv("__ALSOFT_HALF_ANGLE_CONES");
498 if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
499 ConeScale = 1.0;
500
501 str = getenv("__ALSOFT_REVERSE_Z");
502 if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
503 ZScale = -1.0;
504
505 str = getenv("__ALSOFT_TRAP_ERROR");
506 if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
507 {
508 TrapALError = AL_TRUE;
509 TrapALCError = AL_TRUE;
510 }
511 else
512 {
513 str = getenv("__ALSOFT_TRAP_AL_ERROR");
514 if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
515 TrapALError = AL_TRUE;
516
517 str = getenv("__ALSOFT_TRAP_ALC_ERROR");
518 if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
519 TrapALCError = ALC_TRUE;
520 }
521
522 pthread_key_create(&LocalContext, ReleaseThreadCtx);
523 InitializeCriticalSection(&ListLock);
524 ThunkInit();
525 }
526
527 static void alc_deinit_safe(void)
528 {
529 ReleaseALC(ALC_FALSE);
530
531 FreeALConfig();
532
533 ThunkExit();
534 DeleteCriticalSection(&ListLock);
535 pthread_key_delete(LocalContext);
536
537 if(LogFile != stderr)
538 fclose(LogFile);
539 LogFile = NULL;
540 }
541
542 static void alc_deinit(void)
543 {
544 int i;
545
546 ReleaseALC(ALC_TRUE);
547
548 memset(&PlaybackBackend, 0, sizeof(PlaybackBackend));
549 memset(&CaptureBackend, 0, sizeof(CaptureBackend));
550
551 for(i = 0;BackendList[i].Deinit;i++)
552 BackendList[i].Deinit();
553 BackendLoopback.Deinit();
554
555 alc_deinit_safe();
556 }
557
558 static void alc_initconfig(void)
559 {
560 const char *devs, *str;
561 int i, n;
562
563 str = getenv("ALSOFT_LOGLEVEL");
564 if(str)
565 {
566 long lvl = strtol(str, NULL, 0);
567 if(lvl >= NoLog && lvl <= LogTrace)
568 LogLevel = lvl;
569 }
570
571 str = getenv("ALSOFT_LOGFILE");
572 if(str && str[0])
573 {
574 FILE *logfile = fopen(str, "wat");
575 if(logfile) LogFile = logfile;
576 else ERR("Failed to open log file '%s'\n", str);
577 }
578
579 ReadALConfig();
580
581 InitHrtf();
582
583 #ifdef _WIN32
584 RTPrioLevel = GetConfigValueInt(NULL, "rt-prio", 1);
585 #else
586 RTPrioLevel = GetConfigValueInt(NULL, "rt-prio", 0);
587 #endif
588
589 DefaultResampler = GetConfigValueInt(NULL, "resampler", RESAMPLER_DEFAULT);
590 if(DefaultResampler >= RESAMPLER_MAX || DefaultResampler <= RESAMPLER_MIN)
591 DefaultResampler = RESAMPLER_DEFAULT;
592
593 if(!TrapALCError)
594 TrapALCError = GetConfigValueBool(NULL, "trap-alc-error", ALC_FALSE);
595
596 if(!TrapALError)
597 TrapALError = GetConfigValueBool(NULL, "trap-al-error", AL_FALSE);
598
599 ReverbBoost *= aluPow(10.0f, GetConfigValueFloat("reverb", "boost", 0.0f) /
600 20.0f);
601 EmulateEAXReverb = GetConfigValueBool("reverb", "emulate-eax", AL_FALSE);
602
603 devs = GetConfigValue(NULL, "drivers", "");
604 if(devs[0])
605 {
606 int n;
607 size_t len;
608 const char *next = devs;
609 int endlist, delitem;
610
611 i = 0;
612 do {
613 devs = next;
614 next = strchr(devs, ',');
615
616 delitem = (devs[0] == '-');
617 if(devs[0] == '-') devs++;
618
619 if(!devs[0] || devs[0] == ',')
620 {
621 endlist = 0;
622 continue;
623 }
624 endlist = 1;
625
626 len = (next ? ((size_t)(next-devs)) : strlen(devs));
627 for(n = i;BackendList[n].Init;n++)
628 {
629 if(len == strlen(BackendList[n].name) &&
630 strncmp(BackendList[n].name, devs, len) == 0)
631 {
632 if(delitem)
633 {
634 do {
635 BackendList[n] = BackendList[n+1];
636 ++n;
637 } while(BackendList[n].Init);
638 }
639 else
640 {
641 struct BackendInfo Bkp = BackendList[n];
642 while(n > i)
643 {
644 BackendList[n] = BackendList[n-1];
645 --n;
646 }
647 BackendList[n] = Bkp;
648
649 i++;
650 }
651 break;
652 }
653 }
654 } while(next++);
655
656 if(endlist)
657 {
658 BackendList[i].name = NULL;
659 BackendList[i].Init = NULL;
660 BackendList[i].Deinit = NULL;
661 BackendList[i].Probe = NULL;
662 }
663 }
664
665 for(i = 0;BackendList[i].Init && (!PlaybackBackend.name || !CaptureBackend.name);i++)
666 {
667 if(!BackendList[i].Init(&BackendList[i].Funcs))
668 {
669 WARN("Failed to initialize backend \"%s\"\n", BackendList[i].name);
670 continue;
671 }
672
673 TRACE("Initialized backend \"%s\"\n", BackendList[i].name);
674 if(BackendList[i].Funcs.OpenPlayback && !PlaybackBackend.name)
675 {
676 PlaybackBackend = BackendList[i];
677 TRACE("Added \"%s\" for playback\n", PlaybackBackend.name);
678 }
679 if(BackendList[i].Funcs.OpenCapture && !CaptureBackend.name)
680 {
681 CaptureBackend = BackendList[i];
682 TRACE("Added \"%s\" for capture\n", CaptureBackend.name);
683 }
684 }
685 BackendLoopback.Init(&BackendLoopback.Funcs);
686
687 str = GetConfigValue(NULL, "excludefx", "");
688 if(str[0])
689 {
690 size_t len;
691 const char *next = str;
692
693 do {
694 str = next;
695 next = strchr(str, ',');
696
697 if(!str[0] || next == str)
698 continue;
699
700 len = (next ? ((size_t)(next-str)) : strlen(str));
701 for(n = 0;EffectList[n].name;n++)
702 {
703 if(len == strlen(EffectList[n].name) &&
704 strncmp(EffectList[n].name, str, len) == 0)
705 DisabledEffects[EffectList[n].type] = AL_TRUE;
706 }
707 } while(next++);
708 }
709 }
710
711
712 static void LockLists(void)
713 {
714 EnterCriticalSection(&ListLock);
715 }
716
717 static void UnlockLists(void)
718 {
719 LeaveCriticalSection(&ListLock);
720 }
721
722
723 static void ProbeList(ALCchar **list, size_t *listsize, enum DevProbe type)
724 {
725 DO_INITCONFIG();
726
727 LockLists();
728 free(*list);
729 *list = NULL;
730 *listsize = 0;
731
732 if(type == CAPTURE_DEVICE_PROBE)
733 CaptureBackend.Probe(type);
734 else
735 PlaybackBackend.Probe(type);
736 UnlockLists();
737 }
738
739 static void ProbeDeviceList(void)
740 { ProbeList(&alcDeviceList, &alcDeviceListSize, DEVICE_PROBE); }
741 static void ProbeAllDeviceList(void)
742 { ProbeList(&alcAllDeviceList, &alcAllDeviceListSize, ALL_DEVICE_PROBE); }
743 static void ProbeCaptureDeviceList(void)
744 { ProbeList(&alcCaptureDeviceList, &alcCaptureDeviceListSize, CAPTURE_DEVICE_PROBE); }
745
746
747 static void AppendList(const ALCchar *name, ALCchar **List, size_t *ListSize)
748 {
749 size_t len = strlen(name);
750 void *temp;
751
752 if(len == 0)
753 return;
754
755 temp = realloc(*List, (*ListSize) + len + 2);
756 if(!temp)
757 {
758 ERR("Realloc failed to add %s!\n", name);
759 return;
760 }
761 *List = temp;
762
763 memcpy((*List)+(*ListSize), name, len+1);
764 *ListSize += len+1;
765 (*List)[*ListSize] = 0;
766 }
767
768 #define DECL_APPEND_LIST_FUNC(type) \
769 void Append##type##List(const ALCchar *name) \
770 { AppendList(name, &alc##type##List, &alc##type##ListSize); }
771
772 DECL_APPEND_LIST_FUNC(Device)
773 DECL_APPEND_LIST_FUNC(AllDevice)
774 DECL_APPEND_LIST_FUNC(CaptureDevice)
775
776 #undef DECL_APPEND_LIST_FUNC
777
778
779 /* Sets the default channel order used by most non-WaveFormatEx-based APIs */
780 void SetDefaultChannelOrder(ALCdevice *device)
781 {
782 switch(device->FmtChans)
783 {
784 case DevFmtX51: device->DevChannels[0] = FRONT_LEFT;
785 device->DevChannels[1] = FRONT_RIGHT;
786 device->DevChannels[2] = BACK_LEFT;
787 device->DevChannels[3] = BACK_RIGHT;
788 device->DevChannels[4] = FRONT_CENTER;
789 device->DevChannels[5] = LFE;
790 return;
791
792 case DevFmtX71: device->DevChannels[0] = FRONT_LEFT;
793 device->DevChannels[1] = FRONT_RIGHT;
794 device->DevChannels[2] = BACK_LEFT;
795 device->DevChannels[3] = BACK_RIGHT;
796 device->DevChannels[4] = FRONT_CENTER;
797 device->DevChannels[5] = LFE;
798 device->DevChannels[6] = SIDE_LEFT;
799 device->DevChannels[7] = SIDE_RIGHT;
800 return;
801
802 /* Same as WFX order */
803 case DevFmtMono:
804 case DevFmtStereo:
805 case DevFmtQuad:
806 case DevFmtX51Side:
807 case DevFmtX61:
808 break;
809 }
810 SetDefaultWFXChannelOrder(device);
811 }
812 /* Sets the default order used by WaveFormatEx */
813 void SetDefaultWFXChannelOrder(ALCdevice *device)
814 {
815 switch(device->FmtChans)
816 {
817 case DevFmtMono: device->DevChannels[0] = FRONT_CENTER; break;
818
819 case DevFmtStereo: device->DevChannels[0] = FRONT_LEFT;
820 device->DevChannels[1] = FRONT_RIGHT; break;
821
822 case DevFmtQuad: device->DevChannels[0] = FRONT_LEFT;
823 device->DevChannels[1] = FRONT_RIGHT;
824 device->DevChannels[2] = BACK_LEFT;
825 device->DevChannels[3] = BACK_RIGHT; break;
826
827 case DevFmtX51: device->DevChannels[0] = FRONT_LEFT;
828 device->DevChannels[1] = FRONT_RIGHT;
829 device->DevChannels[2] = FRONT_CENTER;
830 device->DevChannels[3] = LFE;
831 device->DevChannels[4] = BACK_LEFT;
832 device->DevChannels[5] = BACK_RIGHT; break;
833
834 case DevFmtX51Side: device->DevChannels[0] = FRONT_LEFT;
835 device->DevChannels[1] = FRONT_RIGHT;
836 device->DevChannels[2] = FRONT_CENTER;
837 device->DevChannels[3] = LFE;
838 device->DevChannels[4] = SIDE_LEFT;
839 device->DevChannels[5] = SIDE_RIGHT; break;
840
841 case DevFmtX61: device->DevChannels[0] = FRONT_LEFT;
842 device->DevChannels[1] = FRONT_RIGHT;
843 device->DevChannels[2] = FRONT_CENTER;
844 device->DevChannels[3] = LFE;
845 device->DevChannels[4] = BACK_CENTER;
846 device->DevChannels[5] = SIDE_LEFT;
847 device->DevChannels[6] = SIDE_RIGHT; break;
848
849 case DevFmtX71: device->DevChannels[0] = FRONT_LEFT;
850 device->DevChannels[1] = FRONT_RIGHT;
851 device->DevChannels[2] = FRONT_CENTER;
852 device->DevChannels[3] = LFE;
853 device->DevChannels[4] = BACK_LEFT;
854 device->DevChannels[5] = BACK_RIGHT;
855 device->DevChannels[6] = SIDE_LEFT;
856 device->DevChannels[7] = SIDE_RIGHT; break;
857 }
858 }
859
860
861 const ALCchar *DevFmtTypeString(enum DevFmtType type)
862 {
863 switch(type)
864 {
865 case DevFmtByte: return "Signed Byte";
866 case DevFmtUByte: return "Unsigned Byte";
867 case DevFmtShort: return "Signed Short";
868 case DevFmtUShort: return "Unsigned Short";
869 case DevFmtFloat: return "Float";
870 }
871 return "(unknown type)";
872 }
873 const ALCchar *DevFmtChannelsString(enum DevFmtChannels chans)
874 {
875 switch(chans)
876 {
877 case DevFmtMono: return "Mono";
878 case DevFmtStereo: return "Stereo";
879 case DevFmtQuad: return "Quadraphonic";
880 case DevFmtX51: return "5.1 Surround";
881 case DevFmtX51Side: return "5.1 Side";
882 case DevFmtX61: return "6.1 Surround";
883 case DevFmtX71: return "7.1 Surround";
884 }
885 return "(unknown channels)";
886 }
887
888 ALuint BytesFromDevFmt(enum DevFmtType type)
889 {
890 switch(type)
891 {
892 case DevFmtByte: return sizeof(ALbyte);
893 case DevFmtUByte: return sizeof(ALubyte);
894 case DevFmtShort: return sizeof(ALshort);
895 case DevFmtUShort: return sizeof(ALushort);
896 case DevFmtFloat: return sizeof(ALfloat);
897 }
898 return 0;
899 }
900 ALuint ChannelsFromDevFmt(enum DevFmtChannels chans)
901 {
902 switch(chans)
903 {
904 case DevFmtMono: return 1;
905 case DevFmtStereo: return 2;
906 case DevFmtQuad: return 4;
907 case DevFmtX51: return 6;
908 case DevFmtX51Side: return 6;
909 case DevFmtX61: return 7;
910 case DevFmtX71: return 8;
911 }
912 return 0;
913 }
914 ALboolean DecomposeDevFormat(ALenum format, enum DevFmtChannels *chans,
915 enum DevFmtType *type)
916 {
917 switch(format)
918 {
919 case AL_FORMAT_MONO8:
920 *chans = DevFmtMono;
921 *type = DevFmtUByte;
922 return AL_TRUE;
923 case AL_FORMAT_MONO16:
924 *chans = DevFmtMono;
925 *type = DevFmtShort;
926 return AL_TRUE;
927 case AL_FORMAT_MONO_FLOAT32:
928 *chans = DevFmtMono;
929 *type = DevFmtFloat;
930 return AL_TRUE;
931 case AL_FORMAT_STEREO8:
932 *chans = DevFmtStereo;
933 *type = DevFmtUByte;
934 return AL_TRUE;
935 case AL_FORMAT_STEREO16:
936 *chans = DevFmtStereo;
937 *type = DevFmtShort;
938 return AL_TRUE;
939 case AL_FORMAT_STEREO_FLOAT32:
940 *chans = DevFmtStereo;
941 *type = DevFmtFloat;
942 return AL_TRUE;
943 case AL_FORMAT_QUAD8:
944 *chans = DevFmtQuad;
945 *type = DevFmtUByte;
946 return AL_TRUE;
947 case AL_FORMAT_QUAD16:
948 *chans = DevFmtQuad;
949 *type = DevFmtShort;
950 return AL_TRUE;
951 case AL_FORMAT_QUAD32:
952 *chans = DevFmtQuad;
953 *type = DevFmtFloat;
954 return AL_TRUE;
955 case AL_FORMAT_51CHN8:
956 *chans = DevFmtX51;
957 *type = DevFmtUByte;
958 return AL_TRUE;
959 case AL_FORMAT_51CHN16:
960 *chans = DevFmtX51;
961 *type = DevFmtShort;
962 return AL_TRUE;
963 case AL_FORMAT_51CHN32:
964 *chans = DevFmtX51;
965 *type = DevFmtFloat;
966 return AL_TRUE;
967 case AL_FORMAT_61CHN8:
968 *chans = DevFmtX61;
969 *type = DevFmtUByte;
970 return AL_TRUE;
971 case AL_FORMAT_61CHN16:
972 *chans = DevFmtX61;
973 *type = DevFmtShort;
974 return AL_TRUE;
975 case AL_FORMAT_61CHN32:
976 *chans = DevFmtX61;
977 *type = DevFmtFloat;
978 return AL_TRUE;
979 case AL_FORMAT_71CHN8:
980 *chans = DevFmtX71;
981 *type = DevFmtUByte;
982 return AL_TRUE;
983 case AL_FORMAT_71CHN16:
984 *chans = DevFmtX71;
985 *type = DevFmtShort;
986 return AL_TRUE;
987 case AL_FORMAT_71CHN32:
988 *chans = DevFmtX71;
989 *type = DevFmtFloat;
990 return AL_TRUE;
991 }
992 return AL_FALSE;
993 }
994
995 static ALCboolean IsValidALCType(ALCenum type)
996 {
997 switch(type)
998 {
999 case ALC_BYTE:
1000 case ALC_UNSIGNED_BYTE:
1001 case ALC_SHORT:
1002 case ALC_UNSIGNED_SHORT:
1003 case ALC_INT:
1004 case ALC_UNSIGNED_INT:
1005 case ALC_FLOAT:
1006 return ALC_TRUE;
1007 }
1008 return ALC_FALSE;
1009 }
1010
1011 static ALCboolean IsValidALCChannels(ALCenum channels)
1012 {
1013 switch(channels)
1014 {
1015 case ALC_MONO:
1016 case ALC_STEREO:
1017 case ALC_QUAD:
1018 case ALC_5POINT1:
1019 case ALC_6POINT1:
1020 case ALC_7POINT1:
1021 return ALC_TRUE;
1022 }
1023 return ALC_FALSE;
1024 }
1025
1026
1027 /* alcSetError
1028 *
1029 * Stores the latest ALC Error
1030 */
1031 static void alcSetError(ALCdevice *device, ALCenum errorCode)
1032 {
1033 if(TrapALCError)
1034 {
1035 #ifdef _WIN32
1036 /* DebugBreak() will cause an exception if there is no debugger */
1037 if(IsDebuggerPresent())
1038 DebugBreak();
1039 #elif defined(SIGTRAP)
1040 kill(getpid(), SIGTRAP);
1041 #endif
1042 }
1043
1044 if(device)
1045 device->LastError = errorCode;
1046 else
1047 g_eLastNullDeviceError = errorCode;
1048 }
1049
1050
1051 /* UpdateDeviceParams
1052 *
1053 * Updates device parameters according to the attribute list (caller is
1054 * responsible for holding the list lock).
1055 */
1056 static ALCboolean UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
1057 {
1058 ALCcontext *context;
1059 ALuint i;
1060
1061 // Check for attributes
1062 if(attrList && attrList[0])
1063 {
1064 ALCuint freq, numMono, numStereo, numSends;
1065 enum DevFmtChannels schans;
1066 enum DevFmtType stype;
1067 ALuint attrIdx;
1068
1069 // If a context is already running on the device, stop playback so the
1070 // device attributes can be updated
1071 if((device->Flags&DEVICE_RUNNING))
1072 ALCdevice_StopPlayback(device);
1073 device->Flags &= ~DEVICE_RUNNING;
1074
1075 freq = device->Frequency;
1076 schans = device->FmtChans;
1077 stype = device->FmtType;
1078 numMono = device->NumMonoSources;
1079 numStereo = device->NumStereoSources;
1080 numSends = device->NumAuxSends;
1081
1082 freq = GetConfigValueInt(NULL, "frequency", freq);
1083 if(freq < 8000) freq = 8000;
1084
1085 attrIdx = 0;
1086 while(attrList[attrIdx])
1087 {
1088 if(attrList[attrIdx] == ALC_FORMAT_CHANNELS_SOFT &&
1089 device->IsLoopbackDevice)
1090 {
1091 ALCint val = attrList[attrIdx + 1];
1092 if(!IsValidALCChannels(val) || !ChannelsFromDevFmt(val))
1093 {
1094 alcSetError(device, ALC_INVALID_VALUE);
1095 return ALC_FALSE;
1096 }
1097 schans = val;
1098 }
1099
1100 if(attrList[attrIdx] == ALC_FORMAT_TYPE_SOFT &&
1101 device->IsLoopbackDevice)
1102 {
1103 ALCint val = attrList[attrIdx + 1];
1104 if(!IsValidALCType(val) || !BytesFromDevFmt(val))
1105 {
1106 alcSetError(device, ALC_INVALID_VALUE);
1107 return ALC_FALSE;
1108 }
1109 stype = val;
1110 }
1111
1112 if(attrList[attrIdx] == ALC_FREQUENCY)
1113 {
1114 if(device->IsLoopbackDevice)
1115 {
1116 freq = attrList[attrIdx + 1];
1117 if(freq < 8000)
1118 {
1119 alcSetError(device, ALC_INVALID_VALUE);
1120 return ALC_FALSE;
1121 }
1122 }
1123 else if(!ConfigValueExists(NULL, "frequency"))
1124 {
1125 freq = attrList[attrIdx + 1];
1126 if(freq < 8000) freq = 8000;
1127 device->Flags |= DEVICE_FREQUENCY_REQUEST;
1128 }
1129 }
1130
1131 if(attrList[attrIdx] == ALC_STEREO_SOURCES)
1132 {
1133 numStereo = attrList[attrIdx + 1];
1134 if(numStereo > device->MaxNoOfSources)
1135 numStereo = device->MaxNoOfSources;
1136
1137 numMono = device->MaxNoOfSources - numStereo;
1138 }
1139
1140 if(attrList[attrIdx] == ALC_MAX_AUXILIARY_SENDS &&
1141 !ConfigValueExists(NULL, "sends"))
1142 {
1143 numSends = attrList[attrIdx + 1];
1144 if(numSends > MAX_SENDS)
1145 numSends = MAX_SENDS;
1146 }
1147
1148 attrIdx += 2;
1149 }
1150
1151 device->UpdateSize = (ALuint64)device->UpdateSize * freq /
1152 device->Frequency;
1153
1154 device->Frequency = freq;
1155 device->FmtChans = schans;
1156 device->FmtType = stype;
1157 device->NumMonoSources = numMono;
1158 device->NumStereoSources = numStereo;
1159 device->NumAuxSends = numSends;
1160 }
1161
1162 if((device->Flags&DEVICE_RUNNING))
1163 return ALC_TRUE;
1164
1165 LockDevice(device);
1166 TRACE("Format pre-setup: %s%s, %s, %uhz%s, %u update size x%d\n",
1167 DevFmtChannelsString(device->FmtChans),
1168 (device->Flags&DEVICE_CHANNELS_REQUEST)?" (requested)":"",
1169 DevFmtTypeString(device->FmtType), device->Frequency,
1170 (device->Flags&DEVICE_FREQUENCY_REQUEST)?" (requested)":"",
1171 device->UpdateSize, device->NumUpdates);
1172 if(ALCdevice_ResetPlayback(device) == ALC_FALSE)
1173 {
1174 UnlockDevice(device);
1175 return ALC_FALSE;
1176 }
1177 device->Flags |= DEVICE_RUNNING;
1178 TRACE("Format post-setup: %s%s, %s, %uhz%s, %u update size x%d\n",
1179 DevFmtChannelsString(device->FmtChans),
1180 (device->Flags&DEVICE_CHANNELS_REQUEST)?" (requested)":"",
1181 DevFmtTypeString(device->FmtType), device->Frequency,
1182 (device->Flags&DEVICE_FREQUENCY_REQUEST)?" (requested)":"",
1183 device->UpdateSize, device->NumUpdates);
1184
1185 aluInitPanning(device);
1186
1187 for(i = 0;i < MAXCHANNELS;i++)
1188 {
1189 device->ClickRemoval[i] = 0.0f;
1190 device->PendingClicks[i] = 0.0f;
1191 }
1192
1193 if(!device->IsLoopbackDevice && GetConfigValueBool(NULL, "hrtf", AL_FALSE))
1194 device->Flags |= DEVICE_USE_HRTF;
1195 if((device->Flags&DEVICE_USE_HRTF) && !IsHrtfCompatible(device))
1196 device->Flags &= ~DEVICE_USE_HRTF;
1197 TRACE("HRTF %s\n", (device->Flags&DEVICE_USE_HRTF)?"enabled":"disabled");
1198
1199 if(!(device->Flags&DEVICE_USE_HRTF) && device->Bs2bLevel > 0 && device->Bs2bLevel <= 6)
1200 {
1201 if(!device->Bs2b)
1202 {
1203 device->Bs2b = calloc(1, sizeof(*device->Bs2b));
1204 bs2b_clear(device->Bs2b);
1205 }
1206 bs2b_set_srate(device->Bs2b, device->Frequency);
1207 bs2b_set_level(device->Bs2b, device->Bs2bLevel);
1208 TRACE("BS2B level %d\n", device->Bs2bLevel);
1209 }
1210 else
1211 {
1212 free(device->Bs2b);
1213 device->Bs2b = NULL;
1214 TRACE("BS2B disabled\n");
1215 }
1216
1217 device->Flags &= ~DEVICE_DUPLICATE_STEREO;
1218 switch(device->FmtChans)
1219 {
1220 case DevFmtMono:
1221 case DevFmtStereo:
1222 break;
1223 case DevFmtQuad:
1224 case DevFmtX51:
1225 case DevFmtX51Side:
1226 case DevFmtX61:
1227 case DevFmtX71:
1228 if(GetConfigValueBool(NULL, "stereodup", AL_TRUE))
1229 device->Flags |= DEVICE_DUPLICATE_STEREO;
1230 break;
1231 }
1232 TRACE("Stereo duplication %s\n", (device->Flags&DEVICE_DUPLICATE_STEREO)?"enabled":"disabled");
1233
1234 context = device->ContextList;
1235 while(context)
1236 {
1237 ALsizei pos;
1238
1239 context->UpdateSources = AL_FALSE;
1240 LockUIntMapRead(&context->EffectSlotMap);
1241 for(pos = 0;pos < context->EffectSlotMap.size;pos++)
1242 {
1243 ALeffectslot *slot = context->EffectSlotMap.array[pos].value;
1244
1245 if(ALeffectState_DeviceUpdate(slot->EffectState, device) == AL_FALSE)
1246 {
1247 UnlockUIntMapRead(&context->EffectSlotMap);
1248 UnlockDevice(device);
1249 ALCdevice_StopPlayback(device);
1250 device->Flags &= ~DEVICE_RUNNING;
1251 return ALC_FALSE;
1252 }
1253 slot->NeedsUpdate = AL_FALSE;
1254 ALeffectState_Update(slot->EffectState, context, slot);
1255 }
1256 UnlockUIntMapRead(&context->EffectSlotMap);
1257
1258 LockUIntMapRead(&context->SourceMap);
1259 for(pos = 0;pos < context->SourceMap.size;pos++)
1260 {
1261 ALsource *source = context->SourceMap.array[pos].value;
1262 ALuint s = device->NumAuxSends;
1263 while(s < MAX_SENDS)
1264 {
1265 if(source->Send[s].Slot)
1266 DecrementRef(&source->Send[s].Slot->ref);
1267 source->Send[s].Slot = NULL;
1268 source->Send[s].WetGain = 1.0f;
1269 source->Send[s].WetGainHF = 1.0f;
1270 s++;
1271 }
1272 source->NeedsUpdate = AL_FALSE;
1273 ALsource_Update(source, context);
1274 }
1275 UnlockUIntMapRead(&context->SourceMap);
1276
1277 context = context->next;
1278 }
1279 UnlockDevice(device);
1280
1281 return ALC_TRUE;
1282 }
1283
1284 /* FreeDevice
1285 *
1286 * Frees the device structure, and destroys any objects the app failed to
1287 * delete. Called once there's no more references on the device.
1288 */
1289 static ALCvoid FreeDevice(ALCdevice *device)
1290 {
1291 TRACE("%p\n", device);
1292
1293 if(device->BufferMap.size > 0)
1294 {
1295 WARN("(%p) Deleting %d Buffer(s)\n", device, device->BufferMap.size);
1296 ReleaseALBuffers(device);
1297 }
1298 ResetUIntMap(&device->BufferMap);
1299
1300 if(device->EffectMap.size > 0)
1301 {
1302 WARN("(%p) Deleting %d Effect(s)\n", device, device->EffectMap.size);
1303 ReleaseALEffects(device);
1304 }
1305 ResetUIntMap(&device->EffectMap);
1306
1307 if(device->FilterMap.size > 0)
1308 {
1309 WARN("(%p) Deleting %d Filter(s)\n", device, device->FilterMap.size);
1310 ReleaseALFilters(device);
1311 }
1312 ResetUIntMap(&device->FilterMap);
1313
1314 free(device->Bs2b);
1315 device->Bs2b = NULL;
1316
1317 free(device->szDeviceName);
1318 device->szDeviceName = NULL;
1319
1320 DeleteCriticalSection(&device->Mutex);
1321
1322 free(device);
1323 }
1324
1325
1326 void ALCdevice_IncRef(ALCdevice *device)
1327 {
1328 RefCount ref;
1329 ref = IncrementRef(&device->ref);
1330 TRACE("%p increasing refcount to %u\n", device, ref);
1331 }
1332
1333 void ALCdevice_DecRef(ALCdevice *device)
1334 {
1335 RefCount ref;
1336 ref = DecrementRef(&device->ref);
1337 TRACE("%p decreasing refcount to %u\n", device, ref);
1338 if(ref == 0) FreeDevice(device);
1339 }
1340
1341 /* VerifyDevice
1342 *
1343 * Checks if the device handle is valid, and increments its ref count if so.
1344 */
1345 static ALCdevice *VerifyDevice(ALCdevice *device)
1346 {
1347 ALCdevice *tmpDevice;
1348
1349 if(!device)
1350 return NULL;
1351
1352 LockLists();
1353 tmpDevice = DeviceList;
1354 while(tmpDevice && tmpDevice != device)
1355 tmpDevice = tmpDevice->next;
1356
1357 if(tmpDevice)
1358 ALCdevice_IncRef(tmpDevice);
1359 UnlockLists();
1360 return tmpDevice;
1361 }
1362
1363
1364 ALCvoid LockDevice(ALCdevice *device)
1365 {
1366 EnterCriticalSection(&device->Mutex);
1367 }
1368
1369 ALCvoid UnlockDevice(ALCdevice *device)
1370 {
1371 LeaveCriticalSection(&device->Mutex);
1372 }
1373
1374
1375 /* InitContext
1376 *
1377 * Initializes context variables
1378 */
1379 static ALvoid InitContext(ALCcontext *pContext)
1380 {
1381 //Initialise listener
1382 pContext->Listener.Gain = 1.0f;
1383 pContext->Listener.MetersPerUnit = 1.0f;
1384 pContext->Listener.Position[0] = 0.0f;
1385 pContext->Listener.Position[1] = 0.0f;
1386 pContext->Listener.Position[2] = 0.0f;
1387 pContext->Listener.Velocity[0] = 0.0f;
1388 pContext->Listener.Velocity[1] = 0.0f;
1389 pContext->Listener.Velocity[2] = 0.0f;
1390 pContext->Listener.Forward[0] = 0.0f;
1391 pContext->Listener.Forward[1] = 0.0f;
1392 pContext->Listener.Forward[2] = -1.0f;
1393 pContext->Listener.Up[0] = 0.0f;
1394 pContext->Listener.Up[1] = 1.0f;
1395 pContext->Listener.Up[2] = 0.0f;
1396
1397 //Validate pContext
1398 pContext->LastError = AL_NO_ERROR;
1399 pContext->UpdateSources = AL_FALSE;
1400 pContext->ActiveSourceCount = 0;
1401 InitUIntMap(&pContext->SourceMap, pContext->Device->MaxNoOfSources);
1402 InitUIntMap(&pContext->EffectSlotMap, pContext->Device->AuxiliaryEffectSlotMax);
1403
1404 //Set globals
1405 pContext->DistanceModel = AL_INVERSE_DISTANCE_CLAMPED;
1406 pContext->SourceDistanceModel = AL_FALSE;
1407 pContext->DopplerFactor = 1.0f;
1408 pContext->DopplerVelocity = 1.0f;
1409 pContext->flSpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
1410 pContext->DeferUpdates = AL_FALSE;
1411
1412 pContext->ExtensionList = alExtList;
1413 }
1414
1415
1416 /* FreeContext
1417 *
1418 * Cleans up the context, and destroys any remaining objects the app failed to
1419 * delete. Called once there's no more references on the context.
1420 */
1421 static ALCvoid FreeContext(ALCcontext *context)
1422 {
1423 TRACE("%p\n", context);
1424
1425 if(context->SourceMap.size > 0)
1426 {
1427 ERR("(%p) Deleting %d Source(s)\n", context, context->SourceMap.size);
1428 ReleaseALSources(context);
1429 }
1430 ResetUIntMap(&context->SourceMap);
1431
1432 if(context->EffectSlotMap.size > 0)
1433 {
1434 ERR("(%p) Deleting %d AuxiliaryEffectSlot(s)\n", context, context->EffectSlotMap.size);
1435 ReleaseALAuxiliaryEffectSlots(context);
1436 }
1437 ResetUIntMap(&context->EffectSlotMap);
1438
1439 context->ActiveSourceCount = 0;
1440 free(context->ActiveSources);
1441 context->ActiveSources = NULL;
1442 context->MaxActiveSources = 0;
1443
1444 context->ActiveEffectSlotCount = 0;
1445 free(context->ActiveEffectSlots);
1446 context->ActiveEffectSlots = NULL;
1447 context->MaxActiveEffectSlots = 0;
1448
1449 ALCdevice_DecRef(context->Device);
1450 context->Device = NULL;
1451
1452 //Invalidate context
1453 memset(context, 0, sizeof(ALCcontext));
1454 free(context);
1455 }
1456
1457 /* ReleaseContext
1458 *
1459 * Removes the context reference from the given device and removes it from
1460 * being current on the running thread or globally.
1461 */
1462 static void ReleaseContext(ALCcontext *context, ALCdevice *device)
1463 {
1464 ALCcontext *volatile*tmp_ctx;
1465
1466 if(pthread_getspecific(LocalContext) == context)
1467 {
1468 WARN("%p released while current on thread\n", context);
1469 pthread_setspecific(LocalContext, NULL);
1470 ALCcontext_DecRef(context);
1471 }
1472
1473 if(CompExchangePtr((void**)&GlobalContext, context, NULL))
1474 {
1475 WARN("%p released while current\n", context);
1476 ALCcontext_DecRef(context);
1477 }
1478
1479 tmp_ctx = &device->ContextList;
1480 while(*tmp_ctx)
1481 {
1482 if(*tmp_ctx == context)
1483 {
1484 *tmp_ctx = context->next;
1485 break;
1486 }
1487 tmp_ctx = &(*tmp_ctx)->next;
1488 }
1489
1490 LockDevice(device);
1491 /* Lock the device to make sure the mixer is not using the contexts in the
1492 * list before we go about deleting this one. There should be a more
1493 * efficient way of doing this. */
1494 UnlockDevice(device);
1495
1496 ALCcontext_DecRef(context);
1497 }
1498
1499 void ALCcontext_IncRef(ALCcontext *context)
1500 {
1501 RefCount ref;
1502 ref = IncrementRef(&context->ref);
1503 TRACE("%p increasing refcount to %u\n", context, ref);
1504 }
1505
1506 void ALCcontext_DecRef(ALCcontext *context)
1507 {
1508 RefCount ref;
1509 ref = DecrementRef(&context->ref);
1510 TRACE("%p decreasing refcount to %u\n", context, ref);
1511 if(ref == 0) FreeContext(context);
1512 }
1513
1514 static void ReleaseThreadCtx(void *ptr)
1515 {
1516 WARN("%p current for thread being destroyed\n", ptr);
1517 ALCcontext_DecRef(ptr);
1518 }
1519
1520 /* VerifyContext
1521 *
1522 * Checks that the given context is valid, and increments its reference count.
1523 */
1524 static ALCcontext *VerifyContext(ALCcontext *context)
1525 {
1526 ALCdevice *dev;
1527
1528 LockLists();
1529 dev = DeviceList;
1530 while(dev)
1531 {
1532 ALCcontext *tmp_ctx = dev->ContextList;
1533 while(tmp_ctx)
1534 {
1535 if(tmp_ctx == context)
1536 {
1537 ALCcontext_IncRef(tmp_ctx);
1538 UnlockLists();
1539 return tmp_ctx;
1540 }
1541 tmp_ctx = tmp_ctx->next;
1542 }
1543 dev = dev->next;
1544 }
1545 UnlockLists();
1546
1547 return NULL;
1548 }
1549
1550
1551 ALCvoid LockContext(ALCcontext *context)
1552 {
1553 EnterCriticalSection(&context->Device->Mutex);
1554 }
1555
1556 ALCvoid UnlockContext(ALCcontext *context)
1557 {
1558 LeaveCriticalSection(&context->Device->Mutex);
1559 }
1560
1561 /* GetContextRef
1562 *
1563 * Returns the currently active context, and adds a reference without locking
1564 * it.
1565 */
1566 ALCcontext *GetContextRef(void)
1567 {
1568 ALCcontext *context;
1569
1570 context = pthread_getspecific(LocalContext);
1571 if(context)
1572 ALCcontext_IncRef(context);
1573 else
1574 {
1575 LockLists();
1576 context = GlobalContext;
1577 if(context)
1578 ALCcontext_IncRef(context);
1579 UnlockLists();
1580 }
1581
1582 return context;
1583 }
1584
1585 ///////////////////////////////////////////////////////
1586
1587
1588 ///////////////////////////////////////////////////////
1589 // ALC Functions calls
1590
1591
1592 // This should probably move to another c file but for now ...
1593 ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
1594 {
1595 ALCdevice *device = NULL;
1596 ALCenum err;
1597
1598 DO_INITCONFIG();
1599
1600 if(!CaptureBackend.name)
1601 {
1602 alcSetError(NULL, ALC_INVALID_VALUE);
1603 return NULL;
1604 }
1605
1606 if(SampleSize <= 0)
1607 {
1608 alcSetError(NULL, ALC_INVALID_VALUE);
1609 return NULL;
1610 }
1611
1612 if(deviceName && (!deviceName[0] || strcasecmp(deviceName, "openal soft") == 0 || strcasecmp(deviceName, "openal-soft") == 0))
1613 deviceName = NULL;
1614
1615 device = calloc(1, sizeof(ALCdevice));
1616 if(!device)
1617 {
1618 alcSetError(NULL, ALC_OUT_OF_MEMORY);
1619 return NULL;
1620 }
1621
1622 //Validate device
1623 device->Funcs = &CaptureBackend.Funcs;
1624 device->ref = 1;
1625 device->Connected = ALC_TRUE;
1626 device->IsCaptureDevice = AL_TRUE;
1627 device->IsLoopbackDevice = AL_FALSE;
1628 InitializeCriticalSection(&device->Mutex);
1629
1630 InitUIntMap(&device->BufferMap, ~0);
1631 InitUIntMap(&device->EffectMap, ~0);
1632 InitUIntMap(&device->FilterMap, ~0);
1633
1634 device->szDeviceName = NULL;
1635
1636 device->Flags |= DEVICE_FREQUENCY_REQUEST;
1637 device->Frequency = frequency;
1638
1639 device->Flags |= DEVICE_CHANNELS_REQUEST;
1640 if(DecomposeDevFormat(format, &device->FmtChans, &device->FmtType) == AL_FALSE)
1641 {
1642 free(device);
1643 alcSetError(NULL, ALC_INVALID_ENUM);
1644 return NULL;
1645 }
1646
1647 device->UpdateSize = SampleSize;
1648 device->NumUpdates = 1;
1649
1650 LockLists();
1651 if((err=ALCdevice_OpenCapture(device, deviceName)) != ALC_NO_ERROR)
1652 {
1653 UnlockLists();
1654 DeleteCriticalSection(&device->Mutex);
1655 free(device);
1656 alcSetError(NULL, err);
1657 return NULL;
1658 }
1659 UnlockLists();
1660
1661 do {
1662 device->next = DeviceList;
1663 } while(!CompExchangePtr((void**)&DeviceList, device->next, device));
1664
1665 return device;
1666 }
1667
1668 ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice(ALCdevice *pDevice)
1669 {
1670 ALCdevice *volatile*list;
1671
1672 LockLists();
1673 list = &DeviceList;
1674 while(*list && *list != pDevice)
1675 list = &(*list)->next;
1676
1677 if(!*list || !(*list)->IsCaptureDevice)
1678 {
1679 alcSetError(*list, ALC_INVALID_DEVICE);
1680 UnlockLists();
1681 return ALC_FALSE;
1682 }
1683
1684 *list = (*list)->next;
1685 UnlockLists();
1686
1687 LockDevice(pDevice);
1688 ALCdevice_CloseCapture(pDevice);
1689 UnlockDevice(pDevice);
1690
1691 ALCdevice_DecRef(pDevice);
1692
1693 return ALC_TRUE;
1694 }
1695
1696 ALC_API void ALC_APIENTRY alcCaptureStart(ALCdevice *device)
1697 {
1698 if(!(device=VerifyDevice(device)) || !device->IsCaptureDevice)
1699 {
1700 alcSetError(device, ALC_INVALID_DEVICE);
1701 if(device) ALCdevice_DecRef(device);
1702 return;
1703 }
1704 LockDevice(device);
1705 if(device->Connected)
1706 ALCdevice_StartCapture(device);
1707 UnlockDevice(device);
1708
1709 ALCdevice_DecRef(device);
1710 }
1711
1712 ALC_API void ALC_APIENTRY alcCaptureStop(ALCdevice *device)
1713 {
1714 if(!(device=VerifyDevice(device)) || !device->IsCaptureDevice)
1715 {
1716 alcSetError(device, ALC_INVALID_DEVICE);
1717 if(device) ALCdevice_DecRef(device);
1718 return;
1719 }
1720 LockDevice(device);
1721 if(device->Connected)
1722 ALCdevice_StopCapture(device);
1723 UnlockDevice(device);
1724
1725 ALCdevice_DecRef(device);
1726 }
1727
1728 ALC_API void ALC_APIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
1729 {
1730 ALCenum err = ALC_INVALID_DEVICE;
1731 if((device=VerifyDevice(device)) != NULL && device->IsCaptureDevice)
1732 {
1733 LockDevice(device);
1734 err = ALCdevice_CaptureSamples(device, buffer, samples);
1735 UnlockDevice(device);
1736 }
1737 if(err != ALC_NO_ERROR)
1738 alcSetError(device, err);
1739 if(device) ALCdevice_DecRef(device);
1740 }
1741
1742 /*
1743 alcGetError
1744
1745 Return last ALC generated error code
1746 */
1747 ALC_API ALCenum ALC_APIENTRY alcGetError(ALCdevice *device)
1748 {
1749 ALCenum errorCode;
1750
1751 if(VerifyDevice(device))
1752 {
1753 errorCode = ExchangeInt(&device->LastError, ALC_NO_ERROR);
1754 ALCdevice_DecRef(device);
1755 }
1756 else
1757 errorCode = ExchangeInt(&g_eLastNullDeviceError, ALC_NO_ERROR);
1758
1759 return errorCode;
1760 }
1761
1762
1763 /* alcSuspendContext
1764 *
1765 * Not functional
1766 */
1767 ALC_API ALCvoid ALC_APIENTRY alcSuspendContext(ALCcontext *Context)
1768 {
1769 (void)Context;
1770 }
1771
1772 /* alcProcessContext
1773 *
1774 * Not functional
1775 */
1776 ALC_API ALCvoid ALC_APIENTRY alcProcessContext(ALCcontext *Context)
1777 {
1778 (void)Context;
1779 }
1780
1781
1782 /* alcGetString
1783 *
1784 * Returns information about the Device, and error strings
1785 */
1786 ALC_API const ALCchar* ALC_APIENTRY alcGetString(ALCdevice *pDevice,ALCenum param)
1787 {
1788 const ALCchar *value = NULL;
1789
1790 switch(param)
1791 {
1792 case ALC_NO_ERROR:
1793 value = alcNoError;
1794 break;
1795
1796 case ALC_INVALID_ENUM:
1797 value = alcErrInvalidEnum;
1798 break;
1799
1800 case ALC_INVALID_VALUE:
1801 value = alcErrInvalidValue;
1802 break;
1803
1804 case ALC_INVALID_DEVICE:
1805 value = alcErrInvalidDevice;
1806 break;
1807
1808 case ALC_INVALID_CONTEXT:
1809 value = alcErrInvalidContext;
1810 break;
1811
1812 case ALC_OUT_OF_MEMORY:
1813 value = alcErrOutOfMemory;
1814 break;
1815
1816 case ALC_DEVICE_SPECIFIER:
1817 if(VerifyDevice(pDevice))
1818 {
1819 value = pDevice->szDeviceName;
1820 ALCdevice_DecRef(pDevice);
1821 }
1822 else
1823 {
1824 ProbeDeviceList();
1825 value = alcDeviceList;
1826 }
1827 break;
1828
1829 case ALC_ALL_DEVICES_SPECIFIER:
1830 ProbeAllDeviceList();
1831 value = alcAllDeviceList;
1832 break;
1833
1834 case ALC_CAPTURE_DEVICE_SPECIFIER:
1835 if(VerifyDevice(pDevice))
1836 {
1837 value = pDevice->szDeviceName;
1838 ALCdevice_DecRef(pDevice);
1839 }
1840 else
1841 {
1842 ProbeCaptureDeviceList();
1843 value = alcCaptureDeviceList;
1844 }
1845 break;
1846
1847 /* Default devices are always first in the list */
1848 case ALC_DEFAULT_DEVICE_SPECIFIER:
1849 if(!alcDeviceList)
1850 ProbeDeviceList();
1851
1852 pDevice = VerifyDevice(pDevice);
1853
1854 free(alcDefaultDeviceSpecifier);
1855 alcDefaultDeviceSpecifier = strdup(alcDeviceList ? alcDeviceList : "");
1856 if(!alcDefaultDeviceSpecifier)
1857 alcSetError(pDevice, ALC_OUT_OF_MEMORY);
1858
1859 value = alcDefaultDeviceSpecifier;
1860 if(pDevice) ALCdevice_DecRef(pDevice);
1861 break;
1862
1863 case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
1864 if(!alcAllDeviceList)
1865 ProbeAllDeviceList();
1866
1867 pDevice = VerifyDevice(pDevice);
1868
1869 free(alcDefaultAllDeviceSpecifier);
1870 alcDefaultAllDeviceSpecifier = strdup(alcAllDeviceList ?
1871 alcAllDeviceList : "");
1872 if(!alcDefaultAllDeviceSpecifier)
1873 alcSetError(pDevice, ALC_OUT_OF_MEMORY);
1874
1875 value = alcDefaultAllDeviceSpecifier;
1876 if(pDevice) ALCdevice_DecRef(pDevice);
1877 break;
1878
1879 case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
1880 if(!alcCaptureDeviceList)
1881 ProbeCaptureDeviceList();
1882
1883 pDevice = VerifyDevice(pDevice);
1884
1885 free(alcCaptureDefaultDeviceSpecifier);
1886 alcCaptureDefaultDeviceSpecifier = strdup(alcCaptureDeviceList ?
1887 alcCaptureDeviceList : "");
1888 if(!alcCaptureDefaultDeviceSpecifier)
1889 alcSetError(pDevice, ALC_OUT_OF_MEMORY);
1890
1891 value = alcCaptureDefaultDeviceSpecifier;
1892 if(pDevice) ALCdevice_DecRef(pDevice);
1893 break;
1894
1895 case ALC_EXTENSIONS:
1896 if(!VerifyDevice(pDevice))
1897 value = alcNoDeviceExtList;
1898 else
1899 {
1900 value = alcExtensionList;
1901 ALCdevice_DecRef(pDevice);
1902 }
1903 break;
1904
1905 default:
1906 pDevice = VerifyDevice(pDevice);
1907 alcSetError(pDevice, ALC_INVALID_ENUM);
1908 if(pDevice) ALCdevice_DecRef(pDevice);
1909 break;
1910 }
1911
1912 return value;
1913 }
1914
1915
1916 /* alcGetIntegerv
1917 *
1918 * Returns information about the Device and the version of Open AL
1919 */
1920 ALC_API ALCvoid ALC_APIENTRY alcGetIntegerv(ALCdevice *device,ALCenum param,ALsizei size,ALCint *data)
1921 {
1922 device = VerifyDevice(device);
1923
1924 if(size == 0 || data == NULL)
1925 {
1926 alcSetError(device, ALC_INVALID_VALUE);
1927 if(device) ALCdevice_DecRef(device);
1928 return;
1929 }
1930
1931 if(!device)
1932 {
1933 switch(param)
1934 {
1935 case ALC_MAJOR_VERSION:
1936 *data = alcMajorVersion;
1937 break;
1938 case ALC_MINOR_VERSION:
1939 *data = alcMinorVersion;
1940 break;
1941
1942 case ALC_ATTRIBUTES_SIZE:
1943 case ALC_ALL_ATTRIBUTES:
1944 case ALC_FREQUENCY:
1945 case ALC_REFRESH:
1946 case ALC_SYNC:
1947 case ALC_MONO_SOURCES:
1948 case ALC_STEREO_SOURCES:
1949 case ALC_CAPTURE_SAMPLES:
1950 case ALC_FORMAT_CHANNELS_SOFT:
1951 case ALC_FORMAT_TYPE_SOFT:
1952 alcSetError(NULL, ALC_INVALID_DEVICE);
1953 break;
1954
1955 default:
1956 alcSetError(NULL, ALC_INVALID_ENUM);
1957 break;
1958 }
1959 }
1960 else if(device->IsCaptureDevice)
1961 {
1962 switch(param)
1963 {
1964 case ALC_CAPTURE_SAMPLES:
1965 LockDevice(device);
1966 *data = ALCdevice_AvailableSamples(device);
1967 UnlockDevice(device);
1968 break;
1969
1970 case ALC_CONNECTED:
1971 *data = device->Connected;
1972 break;
1973
1974 default:
1975 alcSetError(device, ALC_INVALID_ENUM);
1976 break;
1977 }
1978 }
1979 else /* render device */
1980 {
1981 switch(param)
1982 {
1983 case ALC_MAJOR_VERSION:
1984 *data = alcMajorVersion;
1985 break;
1986
1987 case ALC_MINOR_VERSION:
1988 *data = alcMinorVersion;
1989 break;
1990
1991 case ALC_EFX_MAJOR_VERSION:
1992 *data = alcEFXMajorVersion;
1993 break;
1994
1995 case ALC_EFX_MINOR_VERSION:
1996 *data = alcEFXMinorVersion;
1997 break;
1998
1999 case ALC_ATTRIBUTES_SIZE:
2000 *data = 13;
2001 break;
2002
2003 case ALC_ALL_ATTRIBUTES:
2004 if(size < 13)
2005 alcSetError(device, ALC_INVALID_VALUE);
2006 else
2007 {
2008 int i = 0;
2009
2010 data[i++] = ALC_FREQUENCY;
2011 data[i++] = device->Frequency;
2012
2013 if(!device->IsLoopbackDevice)
2014 {
2015 data[i++] = ALC_REFRESH;
2016 data[i++] = device->Frequency / device->UpdateSize;
2017
2018 data[i++] = ALC_SYNC;
2019 data[i++] = ALC_FALSE;
2020 }
2021 else
2022 {
2023 data[i++] = ALC_FORMAT_CHANNELS_SOFT;
2024 data[i++] = device->FmtChans;
2025
2026 data[i++] = ALC_FORMAT_TYPE_SOFT;
2027 data[i++] = device->FmtType;
2028 }
2029
2030 data[i++] = ALC_MONO_SOURCES;
2031 data[i++] = device->NumMonoSources;
2032
2033 data[i++] = ALC_STEREO_SOURCES;
2034 data[i++] = device->NumStereoSources;
2035
2036 data[i++] = ALC_MAX_AUXILIARY_SENDS;
2037 data[i++] = device->NumAuxSends;
2038
2039 data[i++] = 0;
2040 }
2041 break;
2042
2043 case ALC_FREQUENCY:
2044 *data = device->Frequency;
2045 break;
2046
2047 case ALC_REFRESH:
2048 if(device->IsLoopbackDevice)
2049 alcSetError(device, ALC_INVALID_DEVICE);
2050 else
2051 *data = device->Frequency / device->UpdateSize;
2052 break;
2053
2054 case ALC_SYNC:
2055 if(device->IsLoopbackDevice)
2056 alcSetError(device, ALC_INVALID_DEVICE);
2057 else
2058 *data = ALC_FALSE;
2059 break;
2060
2061 case ALC_FORMAT_CHANNELS_SOFT:
2062 if(!device->IsLoopbackDevice)
2063 alcSetError(device, ALC_INVALID_DEVICE);
2064 else
2065 *data = device->FmtChans;
2066 break;
2067
2068 case ALC_FORMAT_TYPE_SOFT:
2069 if(!device->IsLoopbackDevice)
2070 alcSetError(device, ALC_INVALID_DEVICE);
2071 else
2072 *data = device->FmtType;
2073 break;
2074
2075 case ALC_MONO_SOURCES:
2076 *data = device->NumMonoSources;
2077 break;
2078
2079 case ALC_STEREO_SOURCES:
2080 *data = device->NumStereoSources;
2081 break;
2082
2083 case ALC_MAX_AUXILIARY_SENDS:
2084 *data = device->NumAuxSends;
2085 break;
2086
2087 case ALC_CONNECTED:
2088 *data = device->Connected;
2089 break;
2090
2091 default:
2092 alcSetError(device, ALC_INVALID_ENUM);
2093 break;
2094 }
2095 }
2096 if(device)
2097 ALCdevice_DecRef(device);
2098 }
2099
2100
2101 /* alcIsExtensionPresent
2102 *
2103 * Determines if there is support for a particular extension
2104 */
2105 ALC_API ALCboolean ALC_APIENTRY alcIsExtensionPresent(ALCdevice *device, const ALCchar *extName)
2106 {
2107 ALCboolean bResult = ALC_FALSE;
2108
2109 device = VerifyDevice(device);
2110
2111 if(!extName)
2112 alcSetError(device, ALC_INVALID_VALUE);
2113 else
2114 {
2115 size_t len = strlen(extName);
2116 const char *ptr = (device ? alcExtensionList : alcNoDeviceExtList);
2117 while(ptr && *ptr)
2118 {
2119 if(strncasecmp(ptr, extName, len) == 0 &&
2120 (ptr[len] == '\0' || isspace(ptr[len])))
2121 {
2122 bResult = ALC_TRUE;
2123 break;
2124 }
2125 if((ptr=strchr(ptr, ' ')) != NULL)
2126 {
2127 do {
2128 ++ptr;
2129 } while(isspace(*ptr));
2130 }
2131 }
2132 }
2133 if(device)
2134 ALCdevice_DecRef(device);
2135 return bResult;
2136 }
2137
2138
2139 /* alcGetProcAddress
2140 *
2141 * Retrieves the function address for a particular extension function
2142 */
2143 ALC_API ALCvoid* ALC_APIENTRY alcGetProcAddress(ALCdevice *device, const ALCchar *funcName)
2144 {
2145 ALCvoid *ptr = NULL;
2146
2147 device = VerifyDevice(device);
2148
2149 if(!funcName)
2150 alcSetError(device, ALC_INVALID_VALUE);
2151 else
2152 {
2153 ALsizei i = 0;
2154 while(alcFunctions[i].funcName && strcmp(alcFunctions[i].funcName,funcName) != 0)
2155 i++;
2156 ptr = alcFunctions[i].address;
2157 }
2158 if(device)
2159 ALCdevice_DecRef(device);
2160 return ptr;
2161 }
2162
2163
2164 /* alcGetEnumValue
2165 *
2166 * Get the value for a particular ALC Enumerated Value
2167 */
2168 ALC_API ALCenum ALC_APIENTRY alcGetEnumValue(ALCdevice *device, const ALCchar *enumName)
2169 {
2170 ALCenum val = 0;
2171
2172 device = VerifyDevice(device);
2173
2174 if(!enumName)
2175 alcSetError(device, ALC_INVALID_VALUE);
2176 else
2177 {
2178 ALsizei i = 0;
2179 while(enumeration[i].enumName && strcmp(enumeration[i].enumName,enumName) != 0)
2180 i++;
2181 val = enumeration[i].value;
2182 }
2183 if(device)
2184 ALCdevice_DecRef(device);
2185 return val;
2186 }
2187
2188
2189 /* alcCreateContext
2190 *
2191 * Create and attach a Context to a particular Device.
2192 */
2193 ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCint *attrList)
2194 {
2195 ALCcontext *ALContext;
2196
2197 LockLists();
2198 if(!(device=VerifyDevice(device)) || device->IsCaptureDevice || !device->Connected)
2199 {
2200 UnlockLists();
2201 alcSetError(device, ALC_INVALID_DEVICE);
2202 if(device) ALCdevice_DecRef(device);
2203 return NULL;
2204 }
2205
2206 /* Reset Context Last Error code */
2207 device->LastError = ALC_NO_ERROR;
2208
2209 if(UpdateDeviceParams(device, attrList) == ALC_FALSE)
2210 {
2211 UnlockLists();
2212 alcSetError(device, ALC_INVALID_DEVICE);
2213 aluHandleDisconnect(device);
2214 ALCdevice_DecRef(device);
2215 return NULL;
2216 }
2217
2218 ALContext = calloc(1, sizeof(ALCcontext));
2219 if(ALContext)
2220 {
2221 ALContext->ref = 1;
2222
2223 ALContext->MaxActiveSources = 256;
2224 ALContext->ActiveSources = malloc(sizeof(ALContext->ActiveSources[0]) *
2225 ALContext->MaxActiveSources);
2226 }
2227 if(!ALContext || !ALContext->ActiveSources)
2228 {
2229 if(!device->ContextList)
2230 {
2231 ALCdevice_StopPlayback(device);
2232 device->Flags &= ~DEVICE_RUNNING;
2233 }
2234 UnlockLists();
2235
2236 free(ALContext);
2237 ALContext = NULL;
2238
2239 alcSetError(device, ALC_OUT_OF_MEMORY);
2240 ALCdevice_DecRef(device);
2241 return NULL;
2242 }
2243
2244 ALContext->Device = device;
2245 ALCdevice_IncRef(device);
2246 InitContext(ALContext);
2247
2248 ALContext->next = device->ContextList;
2249 device->ContextList = ALContext;
2250 UnlockLists();
2251
2252 ALCdevice_DecRef(device);
2253 return ALContext;
2254 }
2255
2256 /* alcDestroyContext
2257 *
2258 * Remove a Context
2259 */
2260 ALC_API ALCvoid ALC_APIENTRY alcDestroyContext(ALCcontext *context)
2261 {
2262 ALCdevice *Device;
2263
2264 LockLists();
2265 /* alcGetContextsDevice sets an error for invalid contexts */
2266 Device = alcGetContextsDevice(context);
2267 if(Device)
2268 {
2269 ReleaseContext(context, Device);
2270 if(!Device->ContextList)
2271 {
2272 ALCdevice_StopPlayback(Device);
2273 Device->Flags &= ~DEVICE_RUNNING;
2274 }
2275 }
2276 UnlockLists();
2277 }
2278
2279
2280 /* alcGetCurrentContext
2281 *
2282 * Returns the currently active Context
2283 */
2284 ALC_API ALCcontext* ALC_APIENTRY alcGetCurrentContext(ALCvoid)
2285 {
2286 ALCcontext *Context;
2287
2288 Context = pthread_getspecific(LocalContext);
2289 if(!Context) Context = GlobalContext;
2290
2291 return Context;
2292 }
2293
2294 /* alcGetThreadContext
2295 *
2296 * Returns the currently active thread-local Context
2297 */
2298 ALC_API ALCcontext* ALC_APIENTRY alcGetThreadContext(void)
2299 {
2300 ALCcontext *Context;
2301 Context = pthread_getspecific(LocalContext);
2302 return Context;
2303 }
2304
2305
2306 /* alcMakeContextCurrent
2307 *
2308 * Makes the given Context the active Context
2309 */
2310 ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context)
2311 {
2312 /* context must be a valid Context or NULL */
2313 if(context && !(context=VerifyContext(context)))
2314 {
2315 alcSetError(NULL, ALC_INVALID_CONTEXT);
2316 return ALC_FALSE;
2317 }
2318 /* context's reference count is already incremented */
2319 context = ExchangePtr((void**)&GlobalContext, context);
2320 if(context) ALCcontext_DecRef(context);
2321
2322 if((context=pthread_getspecific(LocalContext)) != NULL)
2323 {
2324 pthread_setspecific(LocalContext, NULL);
2325 ALCcontext_DecRef(context);
2326 }
2327
2328 return ALC_TRUE;
2329 }
2330
2331 /* alcSetThreadContext
2332 *
2333 * Makes the given Context the active Context for the current thread
2334 */
2335 ALC_API ALCboolean ALC_APIENTRY alcSetThreadContext(ALCcontext *context)
2336 {
2337 ALCcontext *old;
2338
2339 /* context must be a valid Context or NULL */
2340 if(context && !(context=VerifyContext(context)))
2341 {
2342 alcSetError(NULL, ALC_INVALID_CONTEXT);
2343 return ALC_FALSE;
2344 }
2345 /* context's reference count is already incremented */
2346 old = pthread_getspecific(LocalContext);
2347 pthread_setspecific(LocalContext, context);
2348 if(old) ALCcontext_DecRef(old);
2349
2350 return ALC_TRUE;
2351 }
2352
2353
2354 /* alcGetContextsDevice
2355 *
2356 * Returns the Device that a particular Context is attached to
2357 */
2358 ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice(ALCcontext *Context)
2359 {
2360 ALCdevice *Device;
2361
2362 if(!(Context=VerifyContext(Context)))
2363 {
2364 alcSetError(NULL, ALC_INVALID_CONTEXT);
2365 return NULL;
2366 }
2367 Device = Context->Device;
2368 ALCcontext_DecRef(Context);
2369
2370 return Device;
2371 }
2372
2373
2374 static void GetFormatFromString(const char *str, enum DevFmtChannels *chans, enum DevFmtType *type)
2375 {
2376 static const struct {
2377 const char name[32];
2378 enum DevFmtChannels channels;
2379 enum DevFmtType type;
2380 } formats[] = {
2381 { "AL_FORMAT_MONO32", DevFmtMono, DevFmtFloat },
2382 { "AL_FORMAT_STEREO32", DevFmtStereo, DevFmtFloat },
2383 { "AL_FORMAT_QUAD32", DevFmtQuad, DevFmtFloat },
2384 { "AL_FORMAT_51CHN32", DevFmtX51, DevFmtFloat },
2385 { "AL_FORMAT_61CHN32", DevFmtX61, DevFmtFloat },
2386 { "AL_FORMAT_71CHN32", DevFmtX71, DevFmtFloat },
2387
2388 { "AL_FORMAT_MONO16", DevFmtMono, DevFmtShort },
2389 { "AL_FORMAT_STEREO16", DevFmtStereo, DevFmtShort },
2390 { "AL_FORMAT_QUAD16", DevFmtQuad, DevFmtShort },
2391 { "AL_FORMAT_51CHN16", DevFmtX51, DevFmtShort },
2392 { "AL_FORMAT_61CHN16", DevFmtX61, DevFmtShort },
2393 { "AL_FORMAT_71CHN16", DevFmtX71, DevFmtShort },
2394
2395 { "AL_FORMAT_MONO8", DevFmtMono, DevFmtByte },
2396 { "AL_FORMAT_STEREO8", DevFmtStereo, DevFmtByte },
2397 { "AL_FORMAT_QUAD8", DevFmtQuad, DevFmtByte },
2398 { "AL_FORMAT_51CHN8", DevFmtX51, DevFmtByte },
2399 { "AL_FORMAT_61CHN8", DevFmtX61, DevFmtByte },
2400 { "AL_FORMAT_71CHN8", DevFmtX71, DevFmtByte }
2401 };
2402 size_t i;
2403
2404 for(i = 0;i < sizeof(formats)/sizeof(formats[0]);i++)
2405 {
2406 if(strcasecmp(str, formats[i].name) == 0)
2407 {
2408 *chans = formats[i].channels;
2409 *type = formats[i].type;
2410 return;
2411 }
2412 }
2413
2414 ERR("Unknown format: \"%s\"\n", str);
2415 *chans = DevFmtStereo;
2416 *type = DevFmtShort;
2417 }
2418
2419 /* alcOpenDevice
2420 *
2421 * Open the Device specified.
2422 */
2423 ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName)
2424 {
2425 const ALCchar *fmt;
2426 ALCdevice *device;
2427 ALCenum err;
2428
2429 DO_INITCONFIG();
2430
2431 if(!PlaybackBackend.name)
2432 {
2433 alcSetError(NULL, ALC_INVALID_VALUE);
2434 return NULL;
2435 }
2436
2437 if(deviceName && (!deviceName[0] || strcasecmp(deviceName, "openal soft") == 0 || strcasecmp(deviceName, "openal-soft") == 0))
2438 deviceName = NULL;
2439
2440 device = calloc(1, sizeof(ALCdevice));
2441 if(!device)
2442 {
2443 alcSetError(NULL, ALC_OUT_OF_MEMORY);
2444 return NULL;
2445 }
2446
2447 //Validate device
2448 device->Funcs = &PlaybackBackend.Funcs;
2449 device->ref = 1;
2450 device->Connected = ALC_TRUE;
2451 device->IsCaptureDevice = AL_FALSE;
2452 device->IsLoopbackDevice = AL_FALSE;
2453 InitializeCriticalSection(&device->Mutex);
2454 device->LastError = ALC_NO_ERROR;
2455
2456 device->Flags = 0;
2457 device->Bs2b = NULL;
2458 device->szDeviceName = NULL;
2459
2460 device->ContextList = NULL;
2461
2462 InitUIntMap(&device->BufferMap, ~0);
2463 InitUIntMap(&device->EffectMap, ~0);
2464 InitUIntMap(&device->FilterMap, ~0);
2465
2466 //Set output format
2467 if(ConfigValueExists(NULL, "frequency"))
2468 device->Flags |= DEVICE_FREQUENCY_REQUEST;
2469 device->Frequency = GetConfigValueInt(NULL, "frequency", DEFAULT_OUTPUT_RATE);
2470 if(device->Frequency < 8000)
2471 device->Frequency = 8000;
2472
2473 if(ConfigValueExists(NULL, "format"))
2474 device->Flags |= DEVICE_CHANNELS_REQUEST;
2475 fmt = GetConfigValue(NULL, "format", "AL_FORMAT_STEREO16");
2476 GetFormatFromString(fmt, &device->FmtChans, &device->FmtType);
2477
2478 device->NumUpdates = GetConfigValueInt(NULL, "periods", 4);
2479 if(device->NumUpdates < 2)
2480 device->NumUpdates = 4;
2481
2482 device->UpdateSize = GetConfigValueInt(NULL, "period_size", 1024);
2483 if(device->UpdateSize <= 0)
2484 device->UpdateSize = 1024;
2485
2486 device->MaxNoOfSources = GetConfigValueInt(NULL, "sources", 256);
2487 if(device->MaxNoOfSources <= 0)
2488 device->MaxNoOfSources = 256;
2489
2490 device->AuxiliaryEffectSlotMax = GetConfigValueInt(NULL, "slots", 4);
2491 if(device->AuxiliaryEffectSlotMax <= 0)
2492 device->AuxiliaryEffectSlotMax = 4;
2493
2494 device->NumStereoSources = 1;
2495 device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
2496
2497 device->NumAuxSends = GetConfigValueInt(NULL, "sends", MAX_SENDS);
2498 if(device->NumAuxSends > MAX_SENDS)
2499 device->NumAuxSends = MAX_SENDS;
2500
2501 device->Bs2bLevel = GetConfigValueInt(NULL, "cf_level", 0);
2502
2503 // Find a playback device to open
2504 LockLists();
2505 if((err=ALCdevice_OpenPlayback(device, deviceName)) != ALC_NO_ERROR)
2506 {
2507 UnlockLists();
2508 DeleteCriticalSection(&device->Mutex);
2509 free(device);
2510 alcSetError(NULL, err);
2511 return NULL;
2512 }
2513 UnlockLists();
2514
2515 do {
2516 device->next = DeviceList;
2517 } while(!CompExchangePtr((void**)&DeviceList, device->next, device));
2518
2519 return device;
2520 }
2521
2522 /* alcCloseDevice
2523 *
2524 * Close the specified Device
2525 */
2526 ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *pDevice)
2527 {
2528 ALCdevice *volatile*list;
2529 ALCcontext *ctx;
2530
2531 LockLists();
2532 list = &DeviceList;
2533 while(*list && *list != pDevice)
2534 list = &(*list)->next;
2535
2536 if(!*list || (*list)->IsCaptureDevice)
2537 {
2538 alcSetError(*list, ALC_INVALID_DEVICE);
2539 UnlockLists();
2540 return ALC_FALSE;
2541 }
2542
2543 *list = (*list)->next;
2544 UnlockLists();
2545
2546 if((ctx=pDevice->ContextList) != NULL)
2547 {
2548 do {
2549 WARN("Destroying context %p\n", ctx);
2550 ReleaseContext(ctx, pDevice);
2551 } while((ctx=pDevice->ContextList) != NULL);
2552 ALCdevice_StopPlayback(pDevice);
2553 pDevice->Flags &= ~DEVICE_RUNNING;
2554 }
2555 ALCdevice_ClosePlayback(pDevice);
2556
2557 ALCdevice_DecRef(pDevice);
2558
2559 return ALC_TRUE;
2560 }
2561
2562
2563 /* alcLoopbackOpenDeviceSOFT
2564 *
2565 * Open a loopback device, for manual rendering.
2566 */
2567 ALC_API ALCdevice* ALC_APIENTRY alcLoopbackOpenDeviceSOFT(void)
2568 {
2569 ALCdevice *device;
2570
2571 DO_INITCONFIG();
2572
2573 device = calloc(1, sizeof(ALCdevice));
2574 if(!device)
2575 {
2576 alcSetError(NULL, ALC_OUT_OF_MEMORY);
2577 return NULL;
2578 }
2579
2580 //Validate device
2581 device->Funcs = &BackendLoopback.Funcs;
2582 device->ref = 1;
2583 device->Connected = ALC_TRUE;
2584 device->IsCaptureDevice = AL_FALSE;
2585 device->IsLoopbackDevice = AL_TRUE;
2586 InitializeCriticalSection(&device->Mutex);
2587 device->LastError = ALC_NO_ERROR;
2588
2589 device->Flags = 0;
2590 device->Bs2b = NULL;
2591 device->szDeviceName = NULL;
2592
2593 device->ContextList = NULL;
2594
2595 InitUIntMap(&device->BufferMap, ~0);
2596 InitUIntMap(&device->EffectMap, ~0);
2597 InitUIntMap(&device->FilterMap, ~0);
2598
2599 //Set output format
2600 device->Frequency = 44100;
2601 device->FmtChans = DevFmtStereo;
2602 device->FmtType = DevFmtShort;
2603
2604 device->NumUpdates = 0;
2605 device->UpdateSize = 0;
2606
2607 device->MaxNoOfSources = GetConfigValueInt(NULL, "sources", 256);
2608 if(device->MaxNoOfSources <= 0)
2609 device->MaxNoOfSources = 256;
2610
2611 device->AuxiliaryEffectSlotMax = GetConfigValueInt(NULL, "slots", 4);
2612 if(device->AuxiliaryEffectSlotMax <= 0)
2613 device->AuxiliaryEffectSlotMax = 4;
2614
2615 device->NumStereoSources = 1;
2616 device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
2617
2618 device->NumAuxSends = GetConfigValueInt(NULL, "sends", MAX_SENDS);
2619 if(device->NumAuxSends > MAX_SENDS)
2620 device->NumAuxSends = MAX_SENDS;
2621
2622 device->Bs2bLevel = GetConfigValueInt(NULL, "cf_level", 0);
2623
2624 // Open the "backend"
2625 ALCdevice_OpenPlayback(device, "Loopback");
2626 do {
2627 device->next = DeviceList;
2628 } while(!CompExchangePtr((void**)&DeviceList, device->next, device));
2629 return device;
2630 }
2631
2632 /* alcIsRenderFormatSupportedSOFT
2633 *
2634 * Determines if the loopback device supports the given format for rendering.
2635 */
2636 ALC_API ALCboolean ALC_APIENTRY alcIsRenderFormatSupportedSOFT(ALCdevice *device, ALCsizei freq, ALCenum channels, ALCenum type)
2637 {
2638 ALCboolean ret = ALC_FALSE;
2639
2640 if(!(device=VerifyDevice(device)) || !device->IsLoopbackDevice)
2641 alcSetError(device, ALC_INVALID_DEVICE);
2642 else if(freq <= 0)
2643 alcSetError(device, ALC_INVALID_VALUE);
2644 else if(!IsValidALCType(type) || !IsValidALCChannels(channels))
2645 alcSetError(device, ALC_INVALID_ENUM);
2646 else
2647 {
2648 if(BytesFromDevFmt(type) > 0 && ChannelsFromDevFmt(channels) > 0 &&
2649 freq >= 8000)
2650 ret = ALC_TRUE;
2651 }
2652 if(device) ALCdevice_DecRef(device);
2653
2654 return ret;
2655 }
2656
2657 /* alcRenderSamplesSOFT
2658 *
2659 * Renders some samples into a buffer, using the format last set by the
2660 * attributes given to alcCreateContext.
2661 */
2662 ALC_API void ALC_APIENTRY alcRenderSamplesSOFT(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
2663 {
2664 if(!(device=VerifyDevice(device)) || !device->IsLoopbackDevice)
2665 alcSetError(device, ALC_INVALID_DEVICE);
2666 else if(samples < 0 || (samples > 0 && buffer == NULL))
2667 alcSetError(device, ALC_INVALID_VALUE);
2668 else
2669 aluMixData(device, buffer, samples);
2670 if(device) ALCdevice_DecRef(device);
2671 }
2672
2673
2674 static void ReleaseALC(ALCboolean doclose)
2675 {
2676 free(alcDeviceList); alcDeviceList = NULL;
2677 alcDeviceListSize = 0;
2678 free(alcAllDeviceList); alcAllDeviceList = NULL;
2679 alcAllDeviceListSize = 0;
2680 free(alcCaptureDeviceList); alcCaptureDeviceList = NULL;
2681 alcCaptureDeviceListSize = 0;
2682
2683 free(alcDefaultDeviceSpecifier);
2684 alcDefaultDeviceSpecifier = NULL;
2685 free(alcDefaultAllDeviceSpecifier);
2686 alcDefaultAllDeviceSpecifier = NULL;
2687 free(alcCaptureDefaultDeviceSpecifier);
2688 alcCaptureDefaultDeviceSpecifier = NULL;
2689
2690 if(doclose)
2691 {
2692 ALCdevice *dev;
2693 while((dev=DeviceList) != NULL)
2694 {
2695 WARN("Closing device %p\n", dev);
2696 if(!dev->IsCaptureDevice) alcCloseDevice(dev);
2697 else alcCaptureCloseDevice(dev);
2698 }
2699 }
2700 else
2701 {
2702 ALCdevice *dev;
2703 if((dev=DeviceList) != NULL)
2704 {
2705 ALCuint num = 0;
2706 do {
2707 num++;
2708 } while((dev=dev->next) != NULL);
2709 WARN("%u device%s not closed\n", num, (num>1)?"s":"");
2710 }
2711 }
2712 }
2713
2714 ///////////////////////////////////////////////////////
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