/** * OpenAL cross platform audio library * Copyright (C) 1999-2007 by authors. * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. * Or go to http://www.gnu.org/copyleft/lgpl.html */ #include "config.h" #include #include #include #include #include #include #include "alMain.h" #include "alSource.h" #include "AL/al.h" #include "AL/alc.h" #include "alThunk.h" #include "alSource.h" #include "alBuffer.h" #include "alAuxEffectSlot.h" #include "alError.h" #include "bs2b.h" #include "alu.h" #define EmptyFuncs { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL } static struct BackendInfo BackendList[] = { #ifdef HAVE_PULSEAUDIO { "pulse", alc_pulse_init, alc_pulse_deinit, alc_pulse_probe, EmptyFuncs }, #endif #ifdef HAVE_ALSA { "alsa", alc_alsa_init, alc_alsa_deinit, alc_alsa_probe, EmptyFuncs }, #endif #ifdef HAVE_COREAUDIO { "core", alc_ca_init, alc_ca_deinit, alc_ca_probe, EmptyFuncs }, #endif #ifdef HAVE_OSS { "oss", alc_oss_init, alc_oss_deinit, alc_oss_probe, EmptyFuncs }, #endif #ifdef HAVE_SOLARIS { "solaris", alc_solaris_init, alc_solaris_deinit, alc_solaris_probe, EmptyFuncs }, #endif #ifdef HAVE_SNDIO { "sndio", alc_sndio_init, alc_sndio_deinit, alc_sndio_probe, EmptyFuncs }, #endif #ifdef HAVE_MMDEVAPI { "mmdevapi", alcMMDevApiInit, alcMMDevApiDeinit, alcMMDevApiProbe, EmptyFuncs }, #endif #ifdef HAVE_DSOUND { "dsound", alcDSoundInit, alcDSoundDeinit, alcDSoundProbe, EmptyFuncs }, #endif #ifdef HAVE_WINMM { "winmm", alcWinMMInit, alcWinMMDeinit, alcWinMMProbe, EmptyFuncs }, #endif #ifdef HAVE_PORTAUDIO { "port", alc_pa_init, alc_pa_deinit, alc_pa_probe, EmptyFuncs }, #endif #ifdef HAVE_OPENSL { "opensl", alc_opensl_init, alc_opensl_deinit, alc_opensl_probe, EmptyFuncs }, #endif { "null", alc_null_init, alc_null_deinit, alc_null_probe, EmptyFuncs }, #ifdef HAVE_WAVE { "wave", alc_wave_init, alc_wave_deinit, alc_wave_probe, EmptyFuncs }, #endif { NULL, NULL, NULL, NULL, EmptyFuncs } }; static struct BackendInfo BackendLoopback = { "loopback", alc_loopback_init, alc_loopback_deinit, alc_loopback_probe, EmptyFuncs }; #undef EmptyFuncs static struct BackendInfo PlaybackBackend; static struct BackendInfo CaptureBackend; /////////////////////////////////////////////////////// // STRING and EXTENSIONS typedef struct ALCfunction { const ALCchar *funcName; ALCvoid *address; } ALCfunction; typedef struct ALCenums { const ALCchar *enumName; ALCenum value; } ALCenums; static const ALCfunction alcFunctions[] = { { "alcCreateContext", (ALCvoid *) alcCreateContext }, { "alcMakeContextCurrent", (ALCvoid *) alcMakeContextCurrent }, { "alcProcessContext", (ALCvoid *) alcProcessContext }, { "alcSuspendContext", (ALCvoid *) alcSuspendContext }, { "alcDestroyContext", (ALCvoid *) alcDestroyContext }, { "alcGetCurrentContext", (ALCvoid *) alcGetCurrentContext }, { "alcGetContextsDevice", (ALCvoid *) alcGetContextsDevice }, { "alcOpenDevice", (ALCvoid *) alcOpenDevice }, { "alcCloseDevice", (ALCvoid *) alcCloseDevice }, { "alcGetError", (ALCvoid *) alcGetError }, { "alcIsExtensionPresent", (ALCvoid *) alcIsExtensionPresent }, { "alcGetProcAddress", (ALCvoid *) alcGetProcAddress }, { "alcGetEnumValue", (ALCvoid *) alcGetEnumValue }, { "alcGetString", (ALCvoid *) alcGetString }, { "alcGetIntegerv", (ALCvoid *) alcGetIntegerv }, { "alcCaptureOpenDevice", (ALCvoid *) alcCaptureOpenDevice }, { "alcCaptureCloseDevice", (ALCvoid *) alcCaptureCloseDevice }, { "alcCaptureStart", (ALCvoid *) alcCaptureStart }, { "alcCaptureStop", (ALCvoid *) alcCaptureStop }, { "alcCaptureSamples", (ALCvoid *) alcCaptureSamples }, { "alcSetThreadContext", (ALCvoid *) alcSetThreadContext }, { "alcGetThreadContext", (ALCvoid *) alcGetThreadContext }, { "alcLoopbackOpenDeviceSOFT", (ALCvoid *) alcLoopbackOpenDeviceSOFT}, { "alcIsRenderFormatSupportedSOFT",(ALCvoid *) alcIsRenderFormatSupportedSOFT}, { "alcRenderSamplesSOFT", (ALCvoid *) alcRenderSamplesSOFT }, { "alEnable", (ALCvoid *) alEnable }, { "alDisable", (ALCvoid *) alDisable }, { "alIsEnabled", (ALCvoid *) alIsEnabled }, { "alGetString", (ALCvoid *) alGetString }, { "alGetBooleanv", (ALCvoid *) alGetBooleanv }, { "alGetIntegerv", (ALCvoid *) alGetIntegerv }, { "alGetFloatv", (ALCvoid *) alGetFloatv }, { "alGetDoublev", (ALCvoid *) alGetDoublev }, { "alGetBoolean", (ALCvoid *) alGetBoolean }, { "alGetInteger", (ALCvoid *) alGetInteger }, { "alGetFloat", (ALCvoid *) alGetFloat }, { "alGetDouble", (ALCvoid *) alGetDouble }, { "alGetError", (ALCvoid *) alGetError }, { "alIsExtensionPresent", (ALCvoid *) alIsExtensionPresent }, { "alGetProcAddress", (ALCvoid *) alGetProcAddress }, { "alGetEnumValue", (ALCvoid *) alGetEnumValue }, { "alListenerf", (ALCvoid *) alListenerf }, { "alListener3f", (ALCvoid *) alListener3f }, { "alListenerfv", (ALCvoid *) alListenerfv }, { "alListeneri", (ALCvoid *) alListeneri }, { "alListener3i", (ALCvoid *) alListener3i }, { "alListeneriv", (ALCvoid *) alListeneriv }, { "alGetListenerf", (ALCvoid *) alGetListenerf }, { "alGetListener3f", (ALCvoid *) alGetListener3f }, { "alGetListenerfv", (ALCvoid *) alGetListenerfv }, { "alGetListeneri", (ALCvoid *) alGetListeneri }, { "alGetListener3i", (ALCvoid *) alGetListener3i }, { "alGetListeneriv", (ALCvoid *) alGetListeneriv }, { "alGenSources", (ALCvoid *) alGenSources }, { "alDeleteSources", (ALCvoid *) alDeleteSources }, { "alIsSource", (ALCvoid *) alIsSource }, { "alSourcef", (ALCvoid *) alSourcef }, { "alSource3f", (ALCvoid *) alSource3f }, { "alSourcefv", (ALCvoid *) alSourcefv }, { "alSourcei", (ALCvoid *) alSourcei }, { "alSource3i", (ALCvoid *) alSource3i }, { "alSourceiv", (ALCvoid *) alSourceiv }, { "alGetSourcef", (ALCvoid *) alGetSourcef }, { "alGetSource3f", (ALCvoid *) alGetSource3f }, { "alGetSourcefv", (ALCvoid *) alGetSourcefv }, { "alGetSourcei", (ALCvoid *) alGetSourcei }, { "alGetSource3i", (ALCvoid *) alGetSource3i }, { "alGetSourceiv", (ALCvoid *) alGetSourceiv }, { "alSourcePlayv", (ALCvoid *) alSourcePlayv }, { "alSourceStopv", (ALCvoid *) alSourceStopv }, { "alSourceRewindv", (ALCvoid *) alSourceRewindv }, { "alSourcePausev", (ALCvoid *) alSourcePausev }, { "alSourcePlay", (ALCvoid *) alSourcePlay }, { "alSourceStop", (ALCvoid *) alSourceStop }, { "alSourceRewind", (ALCvoid *) alSourceRewind }, { "alSourcePause", (ALCvoid *) alSourcePause }, { "alSourceQueueBuffers", (ALCvoid *) alSourceQueueBuffers }, { "alSourceUnqueueBuffers", (ALCvoid *) alSourceUnqueueBuffers }, { "alGenBuffers", (ALCvoid *) alGenBuffers }, { "alDeleteBuffers", (ALCvoid *) alDeleteBuffers }, { "alIsBuffer", (ALCvoid *) alIsBuffer }, { "alBufferData", (ALCvoid *) alBufferData }, { "alBufferf", (ALCvoid *) alBufferf }, { "alBuffer3f", (ALCvoid *) alBuffer3f }, { "alBufferfv", (ALCvoid *) alBufferfv }, { "alBufferi", (ALCvoid *) alBufferi }, { "alBuffer3i", (ALCvoid *) alBuffer3i }, { "alBufferiv", (ALCvoid *) alBufferiv }, { "alGetBufferf", (ALCvoid *) alGetBufferf }, { "alGetBuffer3f", (ALCvoid *) alGetBuffer3f }, { "alGetBufferfv", (ALCvoid *) alGetBufferfv }, { "alGetBufferi", (ALCvoid *) alGetBufferi }, { "alGetBuffer3i", (ALCvoid *) alGetBuffer3i }, { "alGetBufferiv", (ALCvoid *) alGetBufferiv }, { "alDopplerFactor", (ALCvoid *) alDopplerFactor }, { "alDopplerVelocity", (ALCvoid *) alDopplerVelocity }, { "alSpeedOfSound", (ALCvoid *) alSpeedOfSound }, { "alDistanceModel", (ALCvoid *) alDistanceModel }, { "alGenFilters", (ALCvoid *) alGenFilters }, { "alDeleteFilters", (ALCvoid *) alDeleteFilters }, { "alIsFilter", (ALCvoid *) alIsFilter }, { "alFilteri", (ALCvoid *) alFilteri }, { "alFilteriv", (ALCvoid *) alFilteriv }, { "alFilterf", (ALCvoid *) alFilterf }, { "alFilterfv", (ALCvoid *) alFilterfv }, { "alGetFilteri", (ALCvoid *) alGetFilteri }, { "alGetFilteriv", (ALCvoid *) alGetFilteriv }, { "alGetFilterf", (ALCvoid *) alGetFilterf }, { "alGetFilterfv", (ALCvoid *) alGetFilterfv }, { "alGenEffects", (ALCvoid *) alGenEffects }, { "alDeleteEffects", (ALCvoid *) alDeleteEffects }, { "alIsEffect", (ALCvoid *) alIsEffect }, { "alEffecti", (ALCvoid *) alEffecti }, { "alEffectiv", (ALCvoid *) alEffectiv }, { "alEffectf", (ALCvoid *) alEffectf }, { "alEffectfv", (ALCvoid *) alEffectfv }, { "alGetEffecti", (ALCvoid *) alGetEffecti }, { "alGetEffectiv", (ALCvoid *) alGetEffectiv }, { "alGetEffectf", (ALCvoid *) alGetEffectf }, { "alGetEffectfv", (ALCvoid *) alGetEffectfv }, { "alGenAuxiliaryEffectSlots", (ALCvoid *) alGenAuxiliaryEffectSlots}, { "alDeleteAuxiliaryEffectSlots",(ALCvoid *) alDeleteAuxiliaryEffectSlots}, { "alIsAuxiliaryEffectSlot", (ALCvoid *) alIsAuxiliaryEffectSlot }, { "alAuxiliaryEffectSloti", (ALCvoid *) alAuxiliaryEffectSloti }, { "alAuxiliaryEffectSlotiv", (ALCvoid *) alAuxiliaryEffectSlotiv }, { "alAuxiliaryEffectSlotf", (ALCvoid *) alAuxiliaryEffectSlotf }, { "alAuxiliaryEffectSlotfv", (ALCvoid *) alAuxiliaryEffectSlotfv }, { "alGetAuxiliaryEffectSloti", (ALCvoid *) alGetAuxiliaryEffectSloti}, { "alGetAuxiliaryEffectSlotiv", (ALCvoid *) alGetAuxiliaryEffectSlotiv}, { "alGetAuxiliaryEffectSlotf", (ALCvoid *) alGetAuxiliaryEffectSlotf}, { "alGetAuxiliaryEffectSlotfv", (ALCvoid *) alGetAuxiliaryEffectSlotfv}, { "alBufferSubDataSOFT", (ALCvoid *) alBufferSubDataSOFT }, { "alBufferSamplesSOFT", (ALCvoid *) alBufferSamplesSOFT }, { "alBufferSubSamplesSOFT", (ALCvoid *) alBufferSubSamplesSOFT }, { "alGetBufferSamplesSOFT", (ALCvoid *) alGetBufferSamplesSOFT }, { "alIsBufferFormatSupportedSOFT",(ALCvoid *) alIsBufferFormatSupportedSOFT}, { "alDeferUpdatesSOFT", (ALCvoid *) alDeferUpdatesSOFT }, { "alProcessUpdatesSOFT", (ALCvoid *) alProcessUpdatesSOFT }, { NULL, (ALCvoid *) NULL } }; static const ALCenums enumeration[] = { // Types { "ALC_INVALID", ALC_INVALID }, { "ALC_FALSE", ALC_FALSE }, { "ALC_TRUE", ALC_TRUE }, // ALC Properties { "ALC_MAJOR_VERSION", ALC_MAJOR_VERSION }, { "ALC_MINOR_VERSION", ALC_MINOR_VERSION }, { "ALC_ATTRIBUTES_SIZE", ALC_ATTRIBUTES_SIZE }, { "ALC_ALL_ATTRIBUTES", ALC_ALL_ATTRIBUTES }, { "ALC_DEFAULT_DEVICE_SPECIFIER", ALC_DEFAULT_DEVICE_SPECIFIER }, { "ALC_DEVICE_SPECIFIER", ALC_DEVICE_SPECIFIER }, { "ALC_ALL_DEVICES_SPECIFIER", ALC_ALL_DEVICES_SPECIFIER }, { "ALC_DEFAULT_ALL_DEVICES_SPECIFIER", ALC_DEFAULT_ALL_DEVICES_SPECIFIER }, { "ALC_EXTENSIONS", ALC_EXTENSIONS }, { "ALC_FREQUENCY", ALC_FREQUENCY }, { "ALC_REFRESH", ALC_REFRESH }, { "ALC_SYNC", ALC_SYNC }, { "ALC_MONO_SOURCES", ALC_MONO_SOURCES }, { "ALC_STEREO_SOURCES", ALC_STEREO_SOURCES }, { "ALC_CAPTURE_DEVICE_SPECIFIER", ALC_CAPTURE_DEVICE_SPECIFIER }, { "ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER", ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER}, { "ALC_CAPTURE_SAMPLES", ALC_CAPTURE_SAMPLES }, { "ALC_CONNECTED", ALC_CONNECTED }, // EFX Properties { "ALC_EFX_MAJOR_VERSION", ALC_EFX_MAJOR_VERSION }, { "ALC_EFX_MINOR_VERSION", ALC_EFX_MINOR_VERSION }, { "ALC_MAX_AUXILIARY_SENDS", ALC_MAX_AUXILIARY_SENDS }, // Loopback device Properties { "ALC_FORMAT_CHANNELS_SOFT", ALC_FORMAT_CHANNELS_SOFT }, { "ALC_FORMAT_TYPE_SOFT", ALC_FORMAT_TYPE_SOFT }, // Buffer Channel Configurations { "ALC_MONO", ALC_MONO }, { "ALC_STEREO", ALC_STEREO }, { "ALC_QUAD", ALC_QUAD }, { "ALC_5POINT1", ALC_5POINT1 }, { "ALC_6POINT1", ALC_6POINT1 }, { "ALC_7POINT1", ALC_7POINT1 }, // Buffer Sample Types { "ALC_BYTE", ALC_BYTE }, { "ALC_UNSIGNED_BYTE", ALC_UNSIGNED_BYTE }, { "ALC_SHORT", ALC_SHORT }, { "ALC_UNSIGNED_SHORT", ALC_UNSIGNED_SHORT }, { "ALC_INT", ALC_INT }, { "ALC_UNSIGNED_INT", ALC_UNSIGNED_INT }, { "ALC_FLOAT", ALC_FLOAT }, // ALC Error Message { "ALC_NO_ERROR", ALC_NO_ERROR }, { "ALC_INVALID_DEVICE", ALC_INVALID_DEVICE }, { "ALC_INVALID_CONTEXT", ALC_INVALID_CONTEXT }, { "ALC_INVALID_ENUM", ALC_INVALID_ENUM }, { "ALC_INVALID_VALUE", ALC_INVALID_VALUE }, { "ALC_OUT_OF_MEMORY", ALC_OUT_OF_MEMORY }, { NULL, (ALCenum)0 } }; // Error strings static const ALCchar alcNoError[] = "No Error"; static const ALCchar alcErrInvalidDevice[] = "Invalid Device"; static const ALCchar alcErrInvalidContext[] = "Invalid Context"; static const ALCchar alcErrInvalidEnum[] = "Invalid Enum"; static const ALCchar alcErrInvalidValue[] = "Invalid Value"; static const ALCchar alcErrOutOfMemory[] = "Out of Memory"; /* Device lists. Sizes only include the first ending null character, not the * second */ static ALCchar *alcDeviceList; static size_t alcDeviceListSize; static ALCchar *alcAllDeviceList; static size_t alcAllDeviceListSize; static ALCchar *alcCaptureDeviceList; static size_t alcCaptureDeviceListSize; /* Default is always the first in the list */ static ALCchar *alcDefaultDeviceSpecifier; static ALCchar *alcDefaultAllDeviceSpecifier; static ALCchar *alcCaptureDefaultDeviceSpecifier; static const ALCchar alcNoDeviceExtList[] = "ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE " "ALC_EXT_thread_local_context ALC_SOFTX_loopback_device"; static const ALCchar alcExtensionList[] = "ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE " "ALC_EXT_DEDICATED ALC_EXT_disconnect ALC_EXT_EFX " "ALC_EXT_thread_local_context ALC_SOFTX_loopback_device"; static const ALCint alcMajorVersion = 1; static const ALCint alcMinorVersion = 1; static const ALCint alcEFXMajorVersion = 1; static const ALCint alcEFXMinorVersion = 0; /////////////////////////////////////////////////////// /////////////////////////////////////////////////////// // Global Variables static CRITICAL_SECTION ListLock; /* Device List */ static ALCdevice *volatile DeviceList = NULL; // Thread-local current context static pthread_key_t LocalContext; // Process-wide current context static ALCcontext *GlobalContext; /* Device Error */ static volatile ALCenum g_eLastNullDeviceError = ALC_NO_ERROR; // Default context extensions static const ALchar alExtList[] = "AL_EXT_ALAW AL_EXT_DOUBLE AL_EXT_EXPONENT_DISTANCE AL_EXT_FLOAT32 " "AL_EXT_IMA4 AL_EXT_LINEAR_DISTANCE AL_EXT_MCFORMATS AL_EXT_MULAW " "AL_EXT_MULAW_MCFORMATS AL_EXT_OFFSET AL_EXT_source_distance_model " "AL_LOKI_quadriphonic AL_SOFTX_buffer_samples AL_SOFT_buffer_sub_data " "AL_SOFTX_deferred_updates AL_SOFT_loop_points " "AL_SOFTX_non_virtual_channels"; // Mixing Priority Level ALint RTPrioLevel; // Output Log File FILE *LogFile; // Output Log Level #ifdef _DEBUG enum LogLevel LogLevel = LogWarning; #else enum LogLevel LogLevel = LogError; #endif /* Flag to trap ALC device errors */ static ALCboolean TrapALCError = ALC_FALSE; /* One-time configuration init control */ static pthread_once_t alc_config_once = PTHREAD_ONCE_INIT; /////////////////////////////////////////////////////// /////////////////////////////////////////////////////// // ALC Related helper functions static void ReleaseALC(ALCboolean doclose); static void ReleaseThreadCtx(void *ptr); static void alc_initconfig(void); #define DO_INITCONFIG() pthread_once(&alc_config_once, alc_initconfig) #if defined(_WIN32) static void alc_init(void); static void alc_deinit(void); static void alc_deinit_safe(void); #ifndef AL_LIBTYPE_STATIC UIntMap TlsDestructor; BOOL APIENTRY DllMain(HANDLE hModule,DWORD ul_reason_for_call,LPVOID lpReserved) { ALsizei i; (void)hModule; // Perform actions based on the reason for calling. switch(ul_reason_for_call) { case DLL_PROCESS_ATTACH: InitUIntMap(&TlsDestructor, ~0); alc_init(); break; case DLL_THREAD_DETACH: LockUIntMapRead(&TlsDestructor); for(i = 0;i < TlsDestructor.size;i++) { void *ptr = pthread_getspecific(TlsDestructor.array[i].key); void (*callback)(void*) = (void(*)(void*))TlsDestructor.array[i].value; if(ptr && callback) callback(ptr); } UnlockUIntMapRead(&TlsDestructor); break; case DLL_PROCESS_DETACH: if(!lpReserved) alc_deinit(); else alc_deinit_safe(); ResetUIntMap(&TlsDestructor); break; } return TRUE; } #elif defined(_MSC_VER) #pragma section(".CRT$XCU",read) static void alc_constructor(void); static void alc_destructor(void); __declspec(allocate(".CRT$XCU")) void (__cdecl* alc_constructor_)(void) = alc_constructor; static void alc_constructor(void) { atexit(alc_destructor); alc_init(); } static void alc_destructor(void) { alc_deinit(); } #elif defined(HAVE_GCC_DESTRUCTOR) static void alc_init(void) __attribute__((constructor)); static void alc_deinit(void) __attribute__((destructor)); #else #error "No static initialization available on this platform!" #endif #elif defined(HAVE_GCC_DESTRUCTOR) static void alc_init(void) __attribute__((constructor)); static void alc_deinit(void) __attribute__((destructor)); #else #error "No global initialization available on this platform!" #endif static void alc_init(void) { const char *str; LogFile = stderr; str = getenv("__ALSOFT_HALF_ANGLE_CONES"); if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1)) ConeScale = 1.0f; str = getenv("__ALSOFT_REVERSE_Z"); if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1)) ZScale = -1.0f; str = getenv("__ALSOFT_TRAP_ERROR"); if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1)) { TrapALError = AL_TRUE; TrapALCError = AL_TRUE; } else { str = getenv("__ALSOFT_TRAP_AL_ERROR"); if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1)) TrapALError = AL_TRUE; str = getenv("__ALSOFT_TRAP_ALC_ERROR"); if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1)) TrapALCError = ALC_TRUE; } pthread_key_create(&LocalContext, ReleaseThreadCtx); InitializeCriticalSection(&ListLock); ThunkInit(); } static void alc_deinit_safe(void) { ReleaseALC(ALC_FALSE); FreeHrtf(); FreeALConfig(); ThunkExit(); DeleteCriticalSection(&ListLock); pthread_key_delete(LocalContext); if(LogFile != stderr) fclose(LogFile); LogFile = NULL; } static void alc_deinit(void) { int i; ReleaseALC(ALC_TRUE); memset(&PlaybackBackend, 0, sizeof(PlaybackBackend)); memset(&CaptureBackend, 0, sizeof(CaptureBackend)); for(i = 0;BackendList[i].Deinit;i++) BackendList[i].Deinit(); BackendLoopback.Deinit(); alc_deinit_safe(); } static void alc_initconfig(void) { const char *devs, *str; float valf; int i, n; str = getenv("ALSOFT_LOGLEVEL"); if(str) { long lvl = strtol(str, NULL, 0); if(lvl >= NoLog && lvl <= LogRef) LogLevel = lvl; } str = getenv("ALSOFT_LOGFILE"); if(str && str[0]) { FILE *logfile = fopen(str, "wat"); if(logfile) LogFile = logfile; else ERR("Failed to open log file '%s'\n", str); } ReadALConfig(); InitHrtf(); #ifdef _WIN32 RTPrioLevel = 1; #else RTPrioLevel = 0; #endif ConfigValueInt(NULL, "rt-prio", &RTPrioLevel); if(ConfigValueInt(NULL, "resampler", &n)) { if(n < RESAMPLER_MAX && n > RESAMPLER_MIN) DefaultResampler = n; } if(!TrapALCError) TrapALCError = GetConfigValueBool(NULL, "trap-alc-error", ALC_FALSE); if(!TrapALError) TrapALError = GetConfigValueBool(NULL, "trap-al-error", AL_FALSE); if(ConfigValueFloat("reverb", "boost", &valf)) ReverbBoost *= aluPow(10.0f, valf / 20.0f); EmulateEAXReverb = GetConfigValueBool("reverb", "emulate-eax", AL_FALSE); if(ConfigValueStr(NULL, "drivers", &devs)) { int n; size_t len; const char *next = devs; int endlist, delitem; i = 0; do { devs = next; next = strchr(devs, ','); delitem = (devs[0] == '-'); if(devs[0] == '-') devs++; if(!devs[0] || devs[0] == ',') { endlist = 0; continue; } endlist = 1; len = (next ? ((size_t)(next-devs)) : strlen(devs)); for(n = i;BackendList[n].Init;n++) { if(len == strlen(BackendList[n].name) && strncmp(BackendList[n].name, devs, len) == 0) { if(delitem) { do { BackendList[n] = BackendList[n+1]; ++n; } while(BackendList[n].Init); } else { struct BackendInfo Bkp = BackendList[n]; while(n > i) { BackendList[n] = BackendList[n-1]; --n; } BackendList[n] = Bkp; i++; } break; } } } while(next++); if(endlist) { BackendList[i].name = NULL; BackendList[i].Init = NULL; BackendList[i].Deinit = NULL; BackendList[i].Probe = NULL; } } for(i = 0;BackendList[i].Init && (!PlaybackBackend.name || !CaptureBackend.name);i++) { if(!BackendList[i].Init(&BackendList[i].Funcs)) { WARN("Failed to initialize backend \"%s\"\n", BackendList[i].name); continue; } TRACE("Initialized backend \"%s\"\n", BackendList[i].name); if(BackendList[i].Funcs.OpenPlayback && !PlaybackBackend.name) { PlaybackBackend = BackendList[i]; TRACE("Added \"%s\" for playback\n", PlaybackBackend.name); } if(BackendList[i].Funcs.OpenCapture && !CaptureBackend.name) { CaptureBackend = BackendList[i]; TRACE("Added \"%s\" for capture\n", CaptureBackend.name); } } BackendLoopback.Init(&BackendLoopback.Funcs); if(ConfigValueStr(NULL, "excludefx", &str)) { size_t len; const char *next = str; do { str = next; next = strchr(str, ','); if(!str[0] || next == str) continue; len = (next ? ((size_t)(next-str)) : strlen(str)); for(n = 0;EffectList[n].name;n++) { if(len == strlen(EffectList[n].name) && strncmp(EffectList[n].name, str, len) == 0) DisabledEffects[EffectList[n].type] = AL_TRUE; } } while(next++); } } static void LockLists(void) { EnterCriticalSection(&ListLock); } static void UnlockLists(void) { LeaveCriticalSection(&ListLock); } static void ProbeList(ALCchar **list, size_t *listsize, enum DevProbe type) { DO_INITCONFIG(); LockLists(); free(*list); *list = NULL; *listsize = 0; if(type == CAPTURE_DEVICE_PROBE) CaptureBackend.Probe(type); else PlaybackBackend.Probe(type); UnlockLists(); } static void ProbeDeviceList(void) { ProbeList(&alcDeviceList, &alcDeviceListSize, DEVICE_PROBE); } static void ProbeAllDeviceList(void) { ProbeList(&alcAllDeviceList, &alcAllDeviceListSize, ALL_DEVICE_PROBE); } static void ProbeCaptureDeviceList(void) { ProbeList(&alcCaptureDeviceList, &alcCaptureDeviceListSize, CAPTURE_DEVICE_PROBE); } static void AppendList(const ALCchar *name, ALCchar **List, size_t *ListSize) { size_t len = strlen(name); void *temp; if(len == 0) return; temp = realloc(*List, (*ListSize) + len + 2); if(!temp) { ERR("Realloc failed to add %s!\n", name); return; } *List = temp; memcpy((*List)+(*ListSize), name, len+1); *ListSize += len+1; (*List)[*ListSize] = 0; } #define DECL_APPEND_LIST_FUNC(type) \ void Append##type##List(const ALCchar *name) \ { AppendList(name, &alc##type##List, &alc##type##ListSize); } DECL_APPEND_LIST_FUNC(Device) DECL_APPEND_LIST_FUNC(AllDevice) DECL_APPEND_LIST_FUNC(CaptureDevice) #undef DECL_APPEND_LIST_FUNC /* Sets the default channel order used by most non-WaveFormatEx-based APIs */ void SetDefaultChannelOrder(ALCdevice *device) { switch(device->FmtChans) { case DevFmtX51: device->DevChannels[0] = FRONT_LEFT; device->DevChannels[1] = FRONT_RIGHT; device->DevChannels[2] = BACK_LEFT; device->DevChannels[3] = BACK_RIGHT; device->DevChannels[4] = FRONT_CENTER; device->DevChannels[5] = LFE; return; case DevFmtX71: device->DevChannels[0] = FRONT_LEFT; device->DevChannels[1] = FRONT_RIGHT; device->DevChannels[2] = BACK_LEFT; device->DevChannels[3] = BACK_RIGHT; device->DevChannels[4] = FRONT_CENTER; device->DevChannels[5] = LFE; device->DevChannels[6] = SIDE_LEFT; device->DevChannels[7] = SIDE_RIGHT; return; /* Same as WFX order */ case DevFmtMono: case DevFmtStereo: case DevFmtQuad: case DevFmtX51Side: case DevFmtX61: break; } SetDefaultWFXChannelOrder(device); } /* Sets the default order used by WaveFormatEx */ void SetDefaultWFXChannelOrder(ALCdevice *device) { switch(device->FmtChans) { case DevFmtMono: device->DevChannels[0] = FRONT_CENTER; break; case DevFmtStereo: device->DevChannels[0] = FRONT_LEFT; device->DevChannels[1] = FRONT_RIGHT; break; case DevFmtQuad: device->DevChannels[0] = FRONT_LEFT; device->DevChannels[1] = FRONT_RIGHT; device->DevChannels[2] = BACK_LEFT; device->DevChannels[3] = BACK_RIGHT; break; case DevFmtX51: device->DevChannels[0] = FRONT_LEFT; device->DevChannels[1] = FRONT_RIGHT; device->DevChannels[2] = FRONT_CENTER; device->DevChannels[3] = LFE; device->DevChannels[4] = BACK_LEFT; device->DevChannels[5] = BACK_RIGHT; break; case DevFmtX51Side: device->DevChannels[0] = FRONT_LEFT; device->DevChannels[1] = FRONT_RIGHT; device->DevChannels[2] = FRONT_CENTER; device->DevChannels[3] = LFE; device->DevChannels[4] = SIDE_LEFT; device->DevChannels[5] = SIDE_RIGHT; break; case DevFmtX61: device->DevChannels[0] = FRONT_LEFT; device->DevChannels[1] = FRONT_RIGHT; device->DevChannels[2] = FRONT_CENTER; device->DevChannels[3] = LFE; device->DevChannels[4] = BACK_CENTER; device->DevChannels[5] = SIDE_LEFT; device->DevChannels[6] = SIDE_RIGHT; break; case DevFmtX71: device->DevChannels[0] = FRONT_LEFT; device->DevChannels[1] = FRONT_RIGHT; device->DevChannels[2] = FRONT_CENTER; device->DevChannels[3] = LFE; device->DevChannels[4] = BACK_LEFT; device->DevChannels[5] = BACK_RIGHT; device->DevChannels[6] = SIDE_LEFT; device->DevChannels[7] = SIDE_RIGHT; break; } } const ALCchar *DevFmtTypeString(enum DevFmtType type) { switch(type) { case DevFmtByte: return "Signed Byte"; case DevFmtUByte: return "Unsigned Byte"; case DevFmtShort: return "Signed Short"; case DevFmtUShort: return "Unsigned Short"; case DevFmtFloat: return "Float"; } return "(unknown type)"; } const ALCchar *DevFmtChannelsString(enum DevFmtChannels chans) { switch(chans) { case DevFmtMono: return "Mono"; case DevFmtStereo: return "Stereo"; case DevFmtQuad: return "Quadraphonic"; case DevFmtX51: return "5.1 Surround"; case DevFmtX51Side: return "5.1 Side"; case DevFmtX61: return "6.1 Surround"; case DevFmtX71: return "7.1 Surround"; } return "(unknown channels)"; } ALuint BytesFromDevFmt(enum DevFmtType type) { switch(type) { case DevFmtByte: return sizeof(ALbyte); case DevFmtUByte: return sizeof(ALubyte); case DevFmtShort: return sizeof(ALshort); case DevFmtUShort: return sizeof(ALushort); case DevFmtFloat: return sizeof(ALfloat); } return 0; } ALuint ChannelsFromDevFmt(enum DevFmtChannels chans) { switch(chans) { case DevFmtMono: return 1; case DevFmtStereo: return 2; case DevFmtQuad: return 4; case DevFmtX51: return 6; case DevFmtX51Side: return 6; case DevFmtX61: return 7; case DevFmtX71: return 8; } return 0; } static ALboolean DecomposeDevFormat(ALenum format, enum DevFmtChannels *chans, enum DevFmtType *type) { static const struct { ALenum format; enum DevFmtChannels channels; enum DevFmtType type; } list[] = { { AL_FORMAT_MONO8, DevFmtMono, DevFmtUByte }, { AL_FORMAT_MONO16, DevFmtMono, DevFmtShort }, { AL_FORMAT_MONO_FLOAT32, DevFmtMono, DevFmtFloat }, { AL_FORMAT_STEREO8, DevFmtStereo, DevFmtUByte }, { AL_FORMAT_STEREO16, DevFmtStereo, DevFmtShort }, { AL_FORMAT_STEREO_FLOAT32, DevFmtStereo, DevFmtFloat }, { AL_FORMAT_QUAD8, DevFmtQuad, DevFmtUByte }, { AL_FORMAT_QUAD16, DevFmtQuad, DevFmtShort }, { AL_FORMAT_QUAD32, DevFmtQuad, DevFmtFloat }, { AL_FORMAT_51CHN8, DevFmtX51, DevFmtUByte }, { AL_FORMAT_51CHN16, DevFmtX51, DevFmtShort }, { AL_FORMAT_51CHN32, DevFmtX51, DevFmtFloat }, { AL_FORMAT_61CHN8, DevFmtX61, DevFmtUByte }, { AL_FORMAT_61CHN16, DevFmtX61, DevFmtShort }, { AL_FORMAT_61CHN32, DevFmtX61, DevFmtFloat }, { AL_FORMAT_71CHN8, DevFmtX71, DevFmtUByte }, { AL_FORMAT_71CHN16, DevFmtX71, DevFmtShort }, { AL_FORMAT_71CHN32, DevFmtX71, DevFmtFloat }, }; ALuint i; for(i = 0;i < sizeof(list)/sizeof(list[0]);i++) { if(list[i].format == format) { *chans = list[i].channels; *type = list[i].type; return AL_TRUE; } } return AL_FALSE; } static ALCboolean IsValidALCType(ALCenum type) { switch(type) { case ALC_BYTE: case ALC_UNSIGNED_BYTE: case ALC_SHORT: case ALC_UNSIGNED_SHORT: case ALC_INT: case ALC_UNSIGNED_INT: case ALC_FLOAT: return ALC_TRUE; } return ALC_FALSE; } static ALCboolean IsValidALCChannels(ALCenum channels) { switch(channels) { case ALC_MONO: case ALC_STEREO: case ALC_QUAD: case ALC_5POINT1: case ALC_6POINT1: case ALC_7POINT1: return ALC_TRUE; } return ALC_FALSE; } /* alcSetError * * Stores the latest ALC Error */ static void alcSetError(ALCdevice *device, ALCenum errorCode) { if(TrapALCError) { #ifdef _WIN32 /* DebugBreak() will cause an exception if there is no debugger */ if(IsDebuggerPresent()) DebugBreak(); #elif defined(SIGTRAP) raise(SIGTRAP); #endif } if(device) device->LastError = errorCode; else g_eLastNullDeviceError = errorCode; } /* UpdateDeviceParams * * Updates device parameters according to the attribute list (caller is * responsible for holding the list lock). */ static ALCboolean UpdateDeviceParams(ALCdevice *device, const ALCint *attrList) { ALCcontext *context; int oldMode; ALuint i; // Check for attributes if(attrList && attrList[0]) { ALCuint freq, numMono, numStereo, numSends; enum DevFmtChannels schans; enum DevFmtType stype; ALuint attrIdx; // If a context is already running on the device, stop playback so the // device attributes can be updated if((device->Flags&DEVICE_RUNNING)) ALCdevice_StopPlayback(device); device->Flags &= ~DEVICE_RUNNING; freq = device->Frequency; schans = device->FmtChans; stype = device->FmtType; numMono = device->NumMonoSources; numStereo = device->NumStereoSources; numSends = device->NumAuxSends; attrIdx = 0; while(attrList[attrIdx]) { if(attrList[attrIdx] == ALC_FORMAT_CHANNELS_SOFT && device->IsLoopbackDevice) { ALCint val = attrList[attrIdx + 1]; if(!IsValidALCChannels(val) || !ChannelsFromDevFmt(val)) { alcSetError(device, ALC_INVALID_VALUE); return ALC_FALSE; } schans = val; } if(attrList[attrIdx] == ALC_FORMAT_TYPE_SOFT && device->IsLoopbackDevice) { ALCint val = attrList[attrIdx + 1]; if(!IsValidALCType(val) || !BytesFromDevFmt(val)) { alcSetError(device, ALC_INVALID_VALUE); return ALC_FALSE; } stype = val; } if(attrList[attrIdx] == ALC_FREQUENCY) { if(device->IsLoopbackDevice) { freq = attrList[attrIdx + 1]; if(freq < 8000) { alcSetError(device, ALC_INVALID_VALUE); return ALC_FALSE; } } else { freq = attrList[attrIdx + 1]; device->Flags |= DEVICE_FREQUENCY_REQUEST; } } if(attrList[attrIdx] == ALC_STEREO_SOURCES) { numStereo = attrList[attrIdx + 1]; if(numStereo > device->MaxNoOfSources) numStereo = device->MaxNoOfSources; numMono = device->MaxNoOfSources - numStereo; } if(attrList[attrIdx] == ALC_MAX_AUXILIARY_SENDS) numSends = attrList[attrIdx + 1]; attrIdx += 2; } if(!device->IsLoopbackDevice) { ConfigValueUInt(NULL, "frequency", &freq); freq = maxu(freq, 8000); } ConfigValueUInt(NULL, "sends", &numSends); numSends = minu(MAX_SENDS, numSends); device->UpdateSize = (ALuint64)device->UpdateSize * freq / device->Frequency; device->Frequency = freq; device->FmtChans = schans; device->FmtType = stype; device->NumMonoSources = numMono; device->NumStereoSources = numStereo; device->NumAuxSends = numSends; } if((device->Flags&DEVICE_RUNNING)) return ALC_TRUE; LockDevice(device); TRACE("Format pre-setup: %s%s, %s, %uhz%s, %u update size x%d\n", DevFmtChannelsString(device->FmtChans), (device->Flags&DEVICE_CHANNELS_REQUEST)?" (requested)":"", DevFmtTypeString(device->FmtType), device->Frequency, (device->Flags&DEVICE_FREQUENCY_REQUEST)?" (requested)":"", device->UpdateSize, device->NumUpdates); if(ALCdevice_ResetPlayback(device) == ALC_FALSE) { UnlockDevice(device); return ALC_FALSE; } device->Flags |= DEVICE_RUNNING; TRACE("Format post-setup: %s%s, %s, %uhz%s, %u update size x%d\n", DevFmtChannelsString(device->FmtChans), (device->Flags&DEVICE_CHANNELS_REQUEST)?" (requested)":"", DevFmtTypeString(device->FmtType), device->Frequency, (device->Flags&DEVICE_FREQUENCY_REQUEST)?" (requested)":"", device->UpdateSize, device->NumUpdates); aluInitPanning(device); for(i = 0;i < MAXCHANNELS;i++) { device->ClickRemoval[i] = 0.0f; device->PendingClicks[i] = 0.0f; } device->Hrtf = NULL; if(!device->IsLoopbackDevice && GetConfigValueBool(NULL, "hrtf", AL_FALSE)) device->Hrtf = GetHrtf(device); TRACE("HRTF %s\n", device->Hrtf?"enabled":"disabled"); if(!device->Hrtf && device->Bs2bLevel > 0 && device->Bs2bLevel <= 6) { if(!device->Bs2b) { device->Bs2b = calloc(1, sizeof(*device->Bs2b)); bs2b_clear(device->Bs2b); } bs2b_set_srate(device->Bs2b, device->Frequency); bs2b_set_level(device->Bs2b, device->Bs2bLevel); TRACE("BS2B level %d\n", device->Bs2bLevel); } else { free(device->Bs2b); device->Bs2b = NULL; TRACE("BS2B disabled\n"); } device->Flags &= ~DEVICE_DUPLICATE_STEREO; switch(device->FmtChans) { case DevFmtMono: case DevFmtStereo: break; case DevFmtQuad: case DevFmtX51: case DevFmtX51Side: case DevFmtX61: case DevFmtX71: if(GetConfigValueBool(NULL, "stereodup", AL_TRUE)) device->Flags |= DEVICE_DUPLICATE_STEREO; break; } TRACE("Stereo duplication %s\n", (device->Flags&DEVICE_DUPLICATE_STEREO)?"enabled":"disabled"); oldMode = SetMixerFPUMode(); context = device->ContextList; while(context) { ALsizei pos; context->UpdateSources = AL_FALSE; LockUIntMapRead(&context->EffectSlotMap); for(pos = 0;pos < context->EffectSlotMap.size;pos++) { ALeffectslot *slot = context->EffectSlotMap.array[pos].value; if(ALeffectState_DeviceUpdate(slot->EffectState, device) == AL_FALSE) { UnlockUIntMapRead(&context->EffectSlotMap); UnlockDevice(device); ALCdevice_StopPlayback(device); device->Flags &= ~DEVICE_RUNNING; return ALC_FALSE; } slot->NeedsUpdate = AL_FALSE; ALeffectState_Update(slot->EffectState, context, slot); } UnlockUIntMapRead(&context->EffectSlotMap); LockUIntMapRead(&context->SourceMap); for(pos = 0;pos < context->SourceMap.size;pos++) { ALsource *source = context->SourceMap.array[pos].value; ALuint s = device->NumAuxSends; while(s < MAX_SENDS) { if(source->Send[s].Slot) DecrementRef(&source->Send[s].Slot->ref); source->Send[s].Slot = NULL; source->Send[s].WetGain = 1.0f; source->Send[s].WetGainHF = 1.0f; s++; } source->NeedsUpdate = AL_FALSE; ALsource_Update(source, context); } UnlockUIntMapRead(&context->SourceMap); context = context->next; } RestoreFPUMode(oldMode); UnlockDevice(device); return ALC_TRUE; } /* FreeDevice * * Frees the device structure, and destroys any objects the app failed to * delete. Called once there's no more references on the device. */ static ALCvoid FreeDevice(ALCdevice *device) { TRACE("%p\n", device); if(device->BufferMap.size > 0) { WARN("(%p) Deleting %d Buffer(s)\n", device, device->BufferMap.size); ReleaseALBuffers(device); } ResetUIntMap(&device->BufferMap); if(device->EffectMap.size > 0) { WARN("(%p) Deleting %d Effect(s)\n", device, device->EffectMap.size); ReleaseALEffects(device); } ResetUIntMap(&device->EffectMap); if(device->FilterMap.size > 0) { WARN("(%p) Deleting %d Filter(s)\n", device, device->FilterMap.size); ReleaseALFilters(device); } ResetUIntMap(&device->FilterMap); free(device->Bs2b); device->Bs2b = NULL; free(device->szDeviceName); device->szDeviceName = NULL; DeleteCriticalSection(&device->Mutex); free(device); } void ALCdevice_IncRef(ALCdevice *device) { RefCount ref; ref = IncrementRef(&device->ref); TRACEREF("%p increasing refcount to %u\n", device, ref); } void ALCdevice_DecRef(ALCdevice *device) { RefCount ref; ref = DecrementRef(&device->ref); TRACEREF("%p decreasing refcount to %u\n", device, ref); if(ref == 0) FreeDevice(device); } /* VerifyDevice * * Checks if the device handle is valid, and increments its ref count if so. */ static ALCdevice *VerifyDevice(ALCdevice *device) { ALCdevice *tmpDevice; if(!device) return NULL; LockLists(); tmpDevice = DeviceList; while(tmpDevice && tmpDevice != device) tmpDevice = tmpDevice->next; if(tmpDevice) ALCdevice_IncRef(tmpDevice); UnlockLists(); return tmpDevice; } ALCvoid LockDevice(ALCdevice *device) { EnterCriticalSection(&device->Mutex); } ALCvoid UnlockDevice(ALCdevice *device) { LeaveCriticalSection(&device->Mutex); } /* InitContext * * Initializes context variables */ static ALvoid InitContext(ALCcontext *pContext) { //Initialise listener pContext->Listener.Gain = 1.0f; pContext->Listener.MetersPerUnit = 1.0f; pContext->Listener.Position[0] = 0.0f; pContext->Listener.Position[1] = 0.0f; pContext->Listener.Position[2] = 0.0f; pContext->Listener.Velocity[0] = 0.0f; pContext->Listener.Velocity[1] = 0.0f; pContext->Listener.Velocity[2] = 0.0f; pContext->Listener.Forward[0] = 0.0f; pContext->Listener.Forward[1] = 0.0f; pContext->Listener.Forward[2] = -1.0f; pContext->Listener.Up[0] = 0.0f; pContext->Listener.Up[1] = 1.0f; pContext->Listener.Up[2] = 0.0f; //Validate pContext pContext->LastError = AL_NO_ERROR; pContext->UpdateSources = AL_FALSE; pContext->ActiveSourceCount = 0; InitUIntMap(&pContext->SourceMap, pContext->Device->MaxNoOfSources); InitUIntMap(&pContext->EffectSlotMap, pContext->Device->AuxiliaryEffectSlotMax); //Set globals pContext->DistanceModel = AL_INVERSE_DISTANCE_CLAMPED; pContext->SourceDistanceModel = AL_FALSE; pContext->DopplerFactor = 1.0f; pContext->DopplerVelocity = 1.0f; pContext->flSpeedOfSound = SPEEDOFSOUNDMETRESPERSEC; pContext->DeferUpdates = AL_FALSE; pContext->ExtensionList = alExtList; } /* FreeContext * * Cleans up the context, and destroys any remaining objects the app failed to * delete. Called once there's no more references on the context. */ static ALCvoid FreeContext(ALCcontext *context) { TRACE("%p\n", context); if(context->SourceMap.size > 0) { ERR("(%p) Deleting %d Source(s)\n", context, context->SourceMap.size); ReleaseALSources(context); } ResetUIntMap(&context->SourceMap); if(context->EffectSlotMap.size > 0) { ERR("(%p) Deleting %d AuxiliaryEffectSlot(s)\n", context, context->EffectSlotMap.size); ReleaseALAuxiliaryEffectSlots(context); } ResetUIntMap(&context->EffectSlotMap); context->ActiveSourceCount = 0; free(context->ActiveSources); context->ActiveSources = NULL; context->MaxActiveSources = 0; context->ActiveEffectSlotCount = 0; free(context->ActiveEffectSlots); context->ActiveEffectSlots = NULL; context->MaxActiveEffectSlots = 0; ALCdevice_DecRef(context->Device); context->Device = NULL; //Invalidate context memset(context, 0, sizeof(ALCcontext)); free(context); } /* ReleaseContext * * Removes the context reference from the given device and removes it from * being current on the running thread or globally. */ static void ReleaseContext(ALCcontext *context, ALCdevice *device) { ALCcontext *volatile*tmp_ctx; if(pthread_getspecific(LocalContext) == context) { WARN("%p released while current on thread\n", context); pthread_setspecific(LocalContext, NULL); ALCcontext_DecRef(context); } if(CompExchangePtr((void**)&GlobalContext, context, NULL)) { WARN("%p released while current\n", context); ALCcontext_DecRef(context); } tmp_ctx = &device->ContextList; while(*tmp_ctx) { if(*tmp_ctx == context) { *tmp_ctx = context->next; break; } tmp_ctx = &(*tmp_ctx)->next; } LockDevice(device); /* Lock the device to make sure the mixer is not using the contexts in the * list before we go about deleting this one. There should be a more * efficient way of doing this. */ UnlockDevice(device); ALCcontext_DecRef(context); } void ALCcontext_IncRef(ALCcontext *context) { RefCount ref; ref = IncrementRef(&context->ref); TRACEREF("%p increasing refcount to %u\n", context, ref); } void ALCcontext_DecRef(ALCcontext *context) { RefCount ref; ref = DecrementRef(&context->ref); TRACEREF("%p decreasing refcount to %u\n", context, ref); if(ref == 0) FreeContext(context); } static void ReleaseThreadCtx(void *ptr) { WARN("%p current for thread being destroyed\n", ptr); ALCcontext_DecRef(ptr); } /* VerifyContext * * Checks that the given context is valid, and increments its reference count. */ static ALCcontext *VerifyContext(ALCcontext *context) { ALCdevice *dev; LockLists(); dev = DeviceList; while(dev) { ALCcontext *tmp_ctx = dev->ContextList; while(tmp_ctx) { if(tmp_ctx == context) { ALCcontext_IncRef(tmp_ctx); UnlockLists(); return tmp_ctx; } tmp_ctx = tmp_ctx->next; } dev = dev->next; } UnlockLists(); return NULL; } ALCvoid LockContext(ALCcontext *context) { EnterCriticalSection(&context->Device->Mutex); } ALCvoid UnlockContext(ALCcontext *context) { LeaveCriticalSection(&context->Device->Mutex); } /* GetContextRef * * Returns the currently active context, and adds a reference without locking * it. */ ALCcontext *GetContextRef(void) { ALCcontext *context; context = pthread_getspecific(LocalContext); if(context) ALCcontext_IncRef(context); else { LockLists(); context = GlobalContext; if(context) ALCcontext_IncRef(context); UnlockLists(); } return context; } /////////////////////////////////////////////////////// /////////////////////////////////////////////////////// // ALC Functions calls // This should probably move to another c file but for now ... ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize) { ALCdevice *device = NULL; ALCenum err; DO_INITCONFIG(); if(!CaptureBackend.name) { alcSetError(NULL, ALC_INVALID_VALUE); return NULL; } if(SampleSize <= 0) { alcSetError(NULL, ALC_INVALID_VALUE); return NULL; } if(deviceName && (!deviceName[0] || strcasecmp(deviceName, "openal soft") == 0 || strcasecmp(deviceName, "openal-soft") == 0)) deviceName = NULL; device = calloc(1, sizeof(ALCdevice)); if(!device) { alcSetError(NULL, ALC_OUT_OF_MEMORY); return NULL; } //Validate device device->Funcs = &CaptureBackend.Funcs; device->ref = 1; device->Connected = ALC_TRUE; device->IsCaptureDevice = AL_TRUE; device->IsLoopbackDevice = AL_FALSE; InitializeCriticalSection(&device->Mutex); InitUIntMap(&device->BufferMap, ~0); InitUIntMap(&device->EffectMap, ~0); InitUIntMap(&device->FilterMap, ~0); device->szDeviceName = NULL; device->Flags |= DEVICE_FREQUENCY_REQUEST; device->Frequency = frequency; device->Flags |= DEVICE_CHANNELS_REQUEST; if(DecomposeDevFormat(format, &device->FmtChans, &device->FmtType) == AL_FALSE) { DeleteCriticalSection(&device->Mutex); free(device); alcSetError(NULL, ALC_INVALID_ENUM); return NULL; } device->UpdateSize = SampleSize; device->NumUpdates = 1; LockLists(); if((err=ALCdevice_OpenCapture(device, deviceName)) != ALC_NO_ERROR) { UnlockLists(); DeleteCriticalSection(&device->Mutex); free(device); alcSetError(NULL, err); return NULL; } UnlockLists(); do { device->next = DeviceList; } while(!CompExchangePtr((void**)&DeviceList, device->next, device)); TRACE("Created device %p\n", device); return device; } ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice(ALCdevice *pDevice) { ALCdevice *volatile*list; LockLists(); list = &DeviceList; while(*list && *list != pDevice) list = &(*list)->next; if(!*list || !(*list)->IsCaptureDevice) { alcSetError(*list, ALC_INVALID_DEVICE); UnlockLists(); return ALC_FALSE; } *list = (*list)->next; UnlockLists(); LockDevice(pDevice); ALCdevice_CloseCapture(pDevice); UnlockDevice(pDevice); ALCdevice_DecRef(pDevice); return ALC_TRUE; } ALC_API void ALC_APIENTRY alcCaptureStart(ALCdevice *device) { if(!(device=VerifyDevice(device)) || !device->IsCaptureDevice) { alcSetError(device, ALC_INVALID_DEVICE); if(device) ALCdevice_DecRef(device); return; } LockDevice(device); if(device->Connected) ALCdevice_StartCapture(device); UnlockDevice(device); ALCdevice_DecRef(device); } ALC_API void ALC_APIENTRY alcCaptureStop(ALCdevice *device) { if(!(device=VerifyDevice(device)) || !device->IsCaptureDevice) { alcSetError(device, ALC_INVALID_DEVICE); if(device) ALCdevice_DecRef(device); return; } LockDevice(device); if(device->Connected) ALCdevice_StopCapture(device); UnlockDevice(device); ALCdevice_DecRef(device); } ALC_API void ALC_APIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples) { ALCenum err = ALC_INVALID_DEVICE; if((device=VerifyDevice(device)) != NULL && device->IsCaptureDevice) { err = ALC_INVALID_VALUE; LockDevice(device); if(samples >= 0 && ALCdevice_AvailableSamples(device) >= (ALCuint)samples) err = ALCdevice_CaptureSamples(device, buffer, samples); UnlockDevice(device); } if(err != ALC_NO_ERROR) alcSetError(device, err); if(device) ALCdevice_DecRef(device); } /* alcGetError Return last ALC generated error code */ ALC_API ALCenum ALC_APIENTRY alcGetError(ALCdevice *device) { ALCenum errorCode; if(VerifyDevice(device)) { errorCode = ExchangeInt(&device->LastError, ALC_NO_ERROR); ALCdevice_DecRef(device); } else errorCode = ExchangeInt(&g_eLastNullDeviceError, ALC_NO_ERROR); return errorCode; } /* alcSuspendContext * * Not functional */ ALC_API ALCvoid ALC_APIENTRY alcSuspendContext(ALCcontext *Context) { (void)Context; } /* alcProcessContext * * Not functional */ ALC_API ALCvoid ALC_APIENTRY alcProcessContext(ALCcontext *Context) { (void)Context; } /* alcGetString * * Returns information about the Device, and error strings */ ALC_API const ALCchar* ALC_APIENTRY alcGetString(ALCdevice *pDevice,ALCenum param) { const ALCchar *value = NULL; switch(param) { case ALC_NO_ERROR: value = alcNoError; break; case ALC_INVALID_ENUM: value = alcErrInvalidEnum; break; case ALC_INVALID_VALUE: value = alcErrInvalidValue; break; case ALC_INVALID_DEVICE: value = alcErrInvalidDevice; break; case ALC_INVALID_CONTEXT: value = alcErrInvalidContext; break; case ALC_OUT_OF_MEMORY: value = alcErrOutOfMemory; break; case ALC_DEVICE_SPECIFIER: if(VerifyDevice(pDevice)) { value = pDevice->szDeviceName; ALCdevice_DecRef(pDevice); } else { ProbeDeviceList(); value = alcDeviceList; } break; case ALC_ALL_DEVICES_SPECIFIER: ProbeAllDeviceList(); value = alcAllDeviceList; break; case ALC_CAPTURE_DEVICE_SPECIFIER: if(VerifyDevice(pDevice)) { value = pDevice->szDeviceName; ALCdevice_DecRef(pDevice); } else { ProbeCaptureDeviceList(); value = alcCaptureDeviceList; } break; /* Default devices are always first in the list */ case ALC_DEFAULT_DEVICE_SPECIFIER: if(!alcDeviceList) ProbeDeviceList(); pDevice = VerifyDevice(pDevice); free(alcDefaultDeviceSpecifier); alcDefaultDeviceSpecifier = strdup(alcDeviceList ? alcDeviceList : ""); if(!alcDefaultDeviceSpecifier) alcSetError(pDevice, ALC_OUT_OF_MEMORY); value = alcDefaultDeviceSpecifier; if(pDevice) ALCdevice_DecRef(pDevice); break; case ALC_DEFAULT_ALL_DEVICES_SPECIFIER: if(!alcAllDeviceList) ProbeAllDeviceList(); pDevice = VerifyDevice(pDevice); free(alcDefaultAllDeviceSpecifier); alcDefaultAllDeviceSpecifier = strdup(alcAllDeviceList ? alcAllDeviceList : ""); if(!alcDefaultAllDeviceSpecifier) alcSetError(pDevice, ALC_OUT_OF_MEMORY); value = alcDefaultAllDeviceSpecifier; if(pDevice) ALCdevice_DecRef(pDevice); break; case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER: if(!alcCaptureDeviceList) ProbeCaptureDeviceList(); pDevice = VerifyDevice(pDevice); free(alcCaptureDefaultDeviceSpecifier); alcCaptureDefaultDeviceSpecifier = strdup(alcCaptureDeviceList ? alcCaptureDeviceList : ""); if(!alcCaptureDefaultDeviceSpecifier) alcSetError(pDevice, ALC_OUT_OF_MEMORY); value = alcCaptureDefaultDeviceSpecifier; if(pDevice) ALCdevice_DecRef(pDevice); break; case ALC_EXTENSIONS: if(!VerifyDevice(pDevice)) value = alcNoDeviceExtList; else { value = alcExtensionList; ALCdevice_DecRef(pDevice); } break; default: pDevice = VerifyDevice(pDevice); alcSetError(pDevice, ALC_INVALID_ENUM); if(pDevice) ALCdevice_DecRef(pDevice); break; } return value; } /* alcGetIntegerv * * Returns information about the Device and the version of Open AL */ ALC_API ALCvoid ALC_APIENTRY alcGetIntegerv(ALCdevice *device,ALCenum param,ALsizei size,ALCint *data) { device = VerifyDevice(device); if(size == 0 || data == NULL) { alcSetError(device, ALC_INVALID_VALUE); if(device) ALCdevice_DecRef(device); return; } if(!device) { switch(param) { case ALC_MAJOR_VERSION: *data = alcMajorVersion; break; case ALC_MINOR_VERSION: *data = alcMinorVersion; break; case ALC_ATTRIBUTES_SIZE: case ALC_ALL_ATTRIBUTES: case ALC_FREQUENCY: case ALC_REFRESH: case ALC_SYNC: case ALC_MONO_SOURCES: case ALC_STEREO_SOURCES: case ALC_CAPTURE_SAMPLES: case ALC_FORMAT_CHANNELS_SOFT: case ALC_FORMAT_TYPE_SOFT: alcSetError(NULL, ALC_INVALID_DEVICE); break; default: alcSetError(NULL, ALC_INVALID_ENUM); break; } } else if(device->IsCaptureDevice) { switch(param) { case ALC_CAPTURE_SAMPLES: LockDevice(device); *data = ALCdevice_AvailableSamples(device); UnlockDevice(device); break; case ALC_CONNECTED: *data = device->Connected; break; default: alcSetError(device, ALC_INVALID_ENUM); break; } } else /* render device */ { switch(param) { case ALC_MAJOR_VERSION: *data = alcMajorVersion; break; case ALC_MINOR_VERSION: *data = alcMinorVersion; break; case ALC_EFX_MAJOR_VERSION: *data = alcEFXMajorVersion; break; case ALC_EFX_MINOR_VERSION: *data = alcEFXMinorVersion; break; case ALC_ATTRIBUTES_SIZE: *data = 13; break; case ALC_ALL_ATTRIBUTES: if(size < 13) alcSetError(device, ALC_INVALID_VALUE); else { int i = 0; data[i++] = ALC_FREQUENCY; data[i++] = device->Frequency; if(!device->IsLoopbackDevice) { data[i++] = ALC_REFRESH; data[i++] = device->Frequency / device->UpdateSize; data[i++] = ALC_SYNC; data[i++] = ALC_FALSE; } else { data[i++] = ALC_FORMAT_CHANNELS_SOFT; data[i++] = device->FmtChans; data[i++] = ALC_FORMAT_TYPE_SOFT; data[i++] = device->FmtType; } data[i++] = ALC_MONO_SOURCES; data[i++] = device->NumMonoSources; data[i++] = ALC_STEREO_SOURCES; data[i++] = device->NumStereoSources; data[i++] = ALC_MAX_AUXILIARY_SENDS; data[i++] = device->NumAuxSends; data[i++] = 0; } break; case ALC_FREQUENCY: *data = device->Frequency; break; case ALC_REFRESH: if(device->IsLoopbackDevice) alcSetError(device, ALC_INVALID_DEVICE); else *data = device->Frequency / device->UpdateSize; break; case ALC_SYNC: if(device->IsLoopbackDevice) alcSetError(device, ALC_INVALID_DEVICE); else *data = ALC_FALSE; break; case ALC_FORMAT_CHANNELS_SOFT: if(!device->IsLoopbackDevice) alcSetError(device, ALC_INVALID_DEVICE); else *data = device->FmtChans; break; case ALC_FORMAT_TYPE_SOFT: if(!device->IsLoopbackDevice) alcSetError(device, ALC_INVALID_DEVICE); else *data = device->FmtType; break; case ALC_MONO_SOURCES: *data = device->NumMonoSources; break; case ALC_STEREO_SOURCES: *data = device->NumStereoSources; break; case ALC_MAX_AUXILIARY_SENDS: *data = device->NumAuxSends; break; case ALC_CONNECTED: *data = device->Connected; break; default: alcSetError(device, ALC_INVALID_ENUM); break; } } if(device) ALCdevice_DecRef(device); } /* alcIsExtensionPresent * * Determines if there is support for a particular extension */ ALC_API ALCboolean ALC_APIENTRY alcIsExtensionPresent(ALCdevice *device, const ALCchar *extName) { ALCboolean bResult = ALC_FALSE; device = VerifyDevice(device); if(!extName) alcSetError(device, ALC_INVALID_VALUE); else { size_t len = strlen(extName); const char *ptr = (device ? alcExtensionList : alcNoDeviceExtList); while(ptr && *ptr) { if(strncasecmp(ptr, extName, len) == 0 && (ptr[len] == '\0' || isspace(ptr[len]))) { bResult = ALC_TRUE; break; } if((ptr=strchr(ptr, ' ')) != NULL) { do { ++ptr; } while(isspace(*ptr)); } } } if(device) ALCdevice_DecRef(device); return bResult; } /* alcGetProcAddress * * Retrieves the function address for a particular extension function */ ALC_API ALCvoid* ALC_APIENTRY alcGetProcAddress(ALCdevice *device, const ALCchar *funcName) { ALCvoid *ptr = NULL; device = VerifyDevice(device); if(!funcName) alcSetError(device, ALC_INVALID_VALUE); else { ALsizei i = 0; while(alcFunctions[i].funcName && strcmp(alcFunctions[i].funcName,funcName) != 0) i++; ptr = alcFunctions[i].address; } if(device) ALCdevice_DecRef(device); return ptr; } /* alcGetEnumValue * * Get the value for a particular ALC Enumerated Value */ ALC_API ALCenum ALC_APIENTRY alcGetEnumValue(ALCdevice *device, const ALCchar *enumName) { ALCenum val = 0; device = VerifyDevice(device); if(!enumName) alcSetError(device, ALC_INVALID_VALUE); else { ALsizei i = 0; while(enumeration[i].enumName && strcmp(enumeration[i].enumName,enumName) != 0) i++; val = enumeration[i].value; } if(device) ALCdevice_DecRef(device); return val; } /* alcCreateContext * * Create and attach a Context to a particular Device. */ ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCint *attrList) { ALCcontext *ALContext; LockLists(); if(!(device=VerifyDevice(device)) || device->IsCaptureDevice || !device->Connected) { UnlockLists(); alcSetError(device, ALC_INVALID_DEVICE); if(device) ALCdevice_DecRef(device); return NULL; } /* Reset Context Last Error code */ device->LastError = ALC_NO_ERROR; if(UpdateDeviceParams(device, attrList) == ALC_FALSE) { UnlockLists(); alcSetError(device, ALC_INVALID_DEVICE); aluHandleDisconnect(device); ALCdevice_DecRef(device); return NULL; } ALContext = calloc(1, sizeof(ALCcontext)); if(ALContext) { ALContext->ref = 1; ALContext->MaxActiveSources = 256; ALContext->ActiveSources = malloc(sizeof(ALContext->ActiveSources[0]) * ALContext->MaxActiveSources); } if(!ALContext || !ALContext->ActiveSources) { if(!device->ContextList) { ALCdevice_StopPlayback(device); device->Flags &= ~DEVICE_RUNNING; } UnlockLists(); free(ALContext); ALContext = NULL; alcSetError(device, ALC_OUT_OF_MEMORY); ALCdevice_DecRef(device); return NULL; } ALContext->Device = device; ALCdevice_IncRef(device); InitContext(ALContext); ALContext->next = device->ContextList; device->ContextList = ALContext; UnlockLists(); ALCdevice_DecRef(device); TRACE("Created context %p\n", ALContext); return ALContext; } /* alcDestroyContext * * Remove a Context */ ALC_API ALCvoid ALC_APIENTRY alcDestroyContext(ALCcontext *context) { ALCdevice *Device; LockLists(); /* alcGetContextsDevice sets an error for invalid contexts */ Device = alcGetContextsDevice(context); if(Device) { ReleaseContext(context, Device); if(!Device->ContextList) { ALCdevice_StopPlayback(Device); Device->Flags &= ~DEVICE_RUNNING; } } UnlockLists(); } /* alcGetCurrentContext * * Returns the currently active Context */ ALC_API ALCcontext* ALC_APIENTRY alcGetCurrentContext(ALCvoid) { ALCcontext *Context; Context = pthread_getspecific(LocalContext); if(!Context) Context = GlobalContext; return Context; } /* alcGetThreadContext * * Returns the currently active thread-local Context */ ALC_API ALCcontext* ALC_APIENTRY alcGetThreadContext(void) { ALCcontext *Context; Context = pthread_getspecific(LocalContext); return Context; } /* alcMakeContextCurrent * * Makes the given Context the active Context */ ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context) { /* context must be a valid Context or NULL */ if(context && !(context=VerifyContext(context))) { alcSetError(NULL, ALC_INVALID_CONTEXT); return ALC_FALSE; } /* context's reference count is already incremented */ context = ExchangePtr((void**)&GlobalContext, context); if(context) ALCcontext_DecRef(context); if((context=pthread_getspecific(LocalContext)) != NULL) { pthread_setspecific(LocalContext, NULL); ALCcontext_DecRef(context); } return ALC_TRUE; } /* alcSetThreadContext * * Makes the given Context the active Context for the current thread */ ALC_API ALCboolean ALC_APIENTRY alcSetThreadContext(ALCcontext *context) { ALCcontext *old; /* context must be a valid Context or NULL */ if(context && !(context=VerifyContext(context))) { alcSetError(NULL, ALC_INVALID_CONTEXT); return ALC_FALSE; } /* context's reference count is already incremented */ old = pthread_getspecific(LocalContext); pthread_setspecific(LocalContext, context); if(old) ALCcontext_DecRef(old); return ALC_TRUE; } /* alcGetContextsDevice * * Returns the Device that a particular Context is attached to */ ALC_API ALCdevice* ALC_APIENTRY alcGetContextsDevice(ALCcontext *Context) { ALCdevice *Device; if(!(Context=VerifyContext(Context))) { alcSetError(NULL, ALC_INVALID_CONTEXT); return NULL; } Device = Context->Device; ALCcontext_DecRef(Context); return Device; } static void GetFormatFromString(const char *str, enum DevFmtChannels *chans, enum DevFmtType *type) { static const struct { const char name[32]; enum DevFmtChannels channels; enum DevFmtType type; } formats[] = { { "AL_FORMAT_MONO32", DevFmtMono, DevFmtFloat }, { "AL_FORMAT_STEREO32", DevFmtStereo, DevFmtFloat }, { "AL_FORMAT_QUAD32", DevFmtQuad, DevFmtFloat }, { "AL_FORMAT_51CHN32", DevFmtX51, DevFmtFloat }, { "AL_FORMAT_61CHN32", DevFmtX61, DevFmtFloat }, { "AL_FORMAT_71CHN32", DevFmtX71, DevFmtFloat }, { "AL_FORMAT_MONO16", DevFmtMono, DevFmtShort }, { "AL_FORMAT_STEREO16", DevFmtStereo, DevFmtShort }, { "AL_FORMAT_QUAD16", DevFmtQuad, DevFmtShort }, { "AL_FORMAT_51CHN16", DevFmtX51, DevFmtShort }, { "AL_FORMAT_61CHN16", DevFmtX61, DevFmtShort }, { "AL_FORMAT_71CHN16", DevFmtX71, DevFmtShort }, { "AL_FORMAT_MONO8", DevFmtMono, DevFmtByte }, { "AL_FORMAT_STEREO8", DevFmtStereo, DevFmtByte }, { "AL_FORMAT_QUAD8", DevFmtQuad, DevFmtByte }, { "AL_FORMAT_51CHN8", DevFmtX51, DevFmtByte }, { "AL_FORMAT_61CHN8", DevFmtX61, DevFmtByte }, { "AL_FORMAT_71CHN8", DevFmtX71, DevFmtByte } }; size_t i; for(i = 0;i < sizeof(formats)/sizeof(formats[0]);i++) { if(strcasecmp(str, formats[i].name) == 0) { *chans = formats[i].channels; *type = formats[i].type; return; } } ERR("Unknown format: \"%s\"\n", str); *chans = DevFmtStereo; *type = DevFmtShort; } /* alcOpenDevice * * Open the Device specified. */ ALC_API ALCdevice* ALC_APIENTRY alcOpenDevice(const ALCchar *deviceName) { const ALCchar *fmt; ALCdevice *device; ALCenum err; DO_INITCONFIG(); if(!PlaybackBackend.name) { alcSetError(NULL, ALC_INVALID_VALUE); return NULL; } if(deviceName && (!deviceName[0] || strcasecmp(deviceName, "openal soft") == 0 || strcasecmp(deviceName, "openal-soft") == 0)) deviceName = NULL; device = calloc(1, sizeof(ALCdevice)); if(!device) { alcSetError(NULL, ALC_OUT_OF_MEMORY); return NULL; } //Validate device device->Funcs = &PlaybackBackend.Funcs; device->ref = 1; device->Connected = ALC_TRUE; device->IsCaptureDevice = AL_FALSE; device->IsLoopbackDevice = AL_FALSE; InitializeCriticalSection(&device->Mutex); device->LastError = ALC_NO_ERROR; device->Flags = 0; device->Bs2b = NULL; device->Bs2bLevel = 0; device->szDeviceName = NULL; device->ContextList = NULL; device->MaxNoOfSources = 256; device->AuxiliaryEffectSlotMax = 4; device->NumAuxSends = MAX_SENDS; InitUIntMap(&device->BufferMap, ~0); InitUIntMap(&device->EffectMap, ~0); InitUIntMap(&device->FilterMap, ~0); //Set output format device->NumUpdates = 4; device->UpdateSize = 1024; device->Frequency = DEFAULT_OUTPUT_RATE; if(ConfigValueUInt(NULL, "frequency", &device->Frequency)) device->Flags |= DEVICE_FREQUENCY_REQUEST; device->Frequency = maxu(device->Frequency, 8000); fmt = "AL_FORMAT_STEREO16"; if(ConfigValueStr(NULL, "format", &fmt)) device->Flags |= DEVICE_CHANNELS_REQUEST; GetFormatFromString(fmt, &device->FmtChans, &device->FmtType); ConfigValueUInt(NULL, "periods", &device->NumUpdates); if(device->NumUpdates < 2) device->NumUpdates = 4; ConfigValueUInt(NULL, "period_size", &device->UpdateSize); if(device->UpdateSize == 0) device->UpdateSize = 1024; ConfigValueUInt(NULL, "sources", &device->MaxNoOfSources); if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256; ConfigValueUInt(NULL, "slots", &device->AuxiliaryEffectSlotMax); if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4; ConfigValueUInt(NULL, "sends", &device->NumAuxSends); if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS; ConfigValueInt(NULL, "cf_level", &device->Bs2bLevel); device->NumStereoSources = 1; device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources; // Find a playback device to open LockLists(); if((err=ALCdevice_OpenPlayback(device, deviceName)) != ALC_NO_ERROR) { UnlockLists(); DeleteCriticalSection(&device->Mutex); free(device); alcSetError(NULL, err); return NULL; } UnlockLists(); do { device->next = DeviceList; } while(!CompExchangePtr((void**)&DeviceList, device->next, device)); TRACE("Created device %p\n", device); return device; } /* alcCloseDevice * * Close the specified Device */ ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *pDevice) { ALCdevice *volatile*list; ALCcontext *ctx; LockLists(); list = &DeviceList; while(*list && *list != pDevice) list = &(*list)->next; if(!*list || (*list)->IsCaptureDevice) { alcSetError(*list, ALC_INVALID_DEVICE); UnlockLists(); return ALC_FALSE; } *list = (*list)->next; UnlockLists(); if((ctx=pDevice->ContextList) != NULL) { do { WARN("Releasing context %p\n", ctx); ReleaseContext(ctx, pDevice); } while((ctx=pDevice->ContextList) != NULL); ALCdevice_StopPlayback(pDevice); pDevice->Flags &= ~DEVICE_RUNNING; } ALCdevice_ClosePlayback(pDevice); ALCdevice_DecRef(pDevice); return ALC_TRUE; } /* alcLoopbackOpenDeviceSOFT * * Open a loopback device, for manual rendering. */ ALC_API ALCdevice* ALC_APIENTRY alcLoopbackOpenDeviceSOFT(void) { ALCdevice *device; DO_INITCONFIG(); device = calloc(1, sizeof(ALCdevice)); if(!device) { alcSetError(NULL, ALC_OUT_OF_MEMORY); return NULL; } //Validate device device->Funcs = &BackendLoopback.Funcs; device->ref = 1; device->Connected = ALC_TRUE; device->IsCaptureDevice = AL_FALSE; device->IsLoopbackDevice = AL_TRUE; InitializeCriticalSection(&device->Mutex); device->LastError = ALC_NO_ERROR; device->Flags = 0; device->Bs2b = NULL; device->Bs2bLevel = 0; device->szDeviceName = NULL; device->ContextList = NULL; device->MaxNoOfSources = 256; device->AuxiliaryEffectSlotMax = 4; device->NumAuxSends = MAX_SENDS; InitUIntMap(&device->BufferMap, ~0); InitUIntMap(&device->EffectMap, ~0); InitUIntMap(&device->FilterMap, ~0); //Set output format device->NumUpdates = 0; device->UpdateSize = 0; device->Frequency = 44100; device->FmtChans = DevFmtStereo; device->FmtType = DevFmtShort; ConfigValueUInt(NULL, "sources", &device->MaxNoOfSources); if(device->MaxNoOfSources == 0) device->MaxNoOfSources = 256; ConfigValueUInt(NULL, "slots", &device->AuxiliaryEffectSlotMax); if(device->AuxiliaryEffectSlotMax == 0) device->AuxiliaryEffectSlotMax = 4; ConfigValueUInt(NULL, "sends", &device->NumAuxSends); if(device->NumAuxSends > MAX_SENDS) device->NumAuxSends = MAX_SENDS; ConfigValueInt(NULL, "cf_level", &device->Bs2bLevel); device->NumStereoSources = 1; device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources; // Open the "backend" ALCdevice_OpenPlayback(device, "Loopback"); do { device->next = DeviceList; } while(!CompExchangePtr((void**)&DeviceList, device->next, device)); TRACE("Created device %p\n", device); return device; } /* alcIsRenderFormatSupportedSOFT * * Determines if the loopback device supports the given format for rendering. */ ALC_API ALCboolean ALC_APIENTRY alcIsRenderFormatSupportedSOFT(ALCdevice *device, ALCsizei freq, ALCenum channels, ALCenum type) { ALCboolean ret = ALC_FALSE; if(!(device=VerifyDevice(device)) || !device->IsLoopbackDevice) alcSetError(device, ALC_INVALID_DEVICE); else if(freq <= 0) alcSetError(device, ALC_INVALID_VALUE); else if(!IsValidALCType(type) || !IsValidALCChannels(channels)) alcSetError(device, ALC_INVALID_ENUM); else { if(BytesFromDevFmt(type) > 0 && ChannelsFromDevFmt(channels) > 0 && freq >= 8000) ret = ALC_TRUE; } if(device) ALCdevice_DecRef(device); return ret; } /* alcRenderSamplesSOFT * * Renders some samples into a buffer, using the format last set by the * attributes given to alcCreateContext. */ ALC_API void ALC_APIENTRY alcRenderSamplesSOFT(ALCdevice *device, ALCvoid *buffer, ALCsizei samples) { if(!(device=VerifyDevice(device)) || !device->IsLoopbackDevice) alcSetError(device, ALC_INVALID_DEVICE); else if(samples < 0 || (samples > 0 && buffer == NULL)) alcSetError(device, ALC_INVALID_VALUE); else aluMixData(device, buffer, samples); if(device) ALCdevice_DecRef(device); } static void ReleaseALC(ALCboolean doclose) { free(alcDeviceList); alcDeviceList = NULL; alcDeviceListSize = 0; free(alcAllDeviceList); alcAllDeviceList = NULL; alcAllDeviceListSize = 0; free(alcCaptureDeviceList); alcCaptureDeviceList = NULL; alcCaptureDeviceListSize = 0; free(alcDefaultDeviceSpecifier); alcDefaultDeviceSpecifier = NULL; free(alcDefaultAllDeviceSpecifier); alcDefaultAllDeviceSpecifier = NULL; free(alcCaptureDefaultDeviceSpecifier); alcCaptureDefaultDeviceSpecifier = NULL; if(doclose) { ALCdevice *dev; while((dev=DeviceList) != NULL) { WARN("Closing device %p\n", dev); if(!dev->IsCaptureDevice) alcCloseDevice(dev); else alcCaptureCloseDevice(dev); } } else { ALCdevice *dev; if((dev=DeviceList) != NULL) { ALCuint num = 0; do { num++; } while((dev=dev->next) != NULL); WARN("%u device%s not closed\n", num, (num>1)?"s":""); } } } ///////////////////////////////////////////////////////