diff options
author | Chris Robinson <chris.kcat@gmail.com> | 2018-11-16 06:45:24 -0800 |
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committer | Chris Robinson <chris.kcat@gmail.com> | 2018-11-16 06:48:33 -0800 |
commit | 165c162d01fa276945e60dc7030b1440973df95a (patch) | |
tree | 3218c34f61f6dd75975f58026af27813d635cd89 /OpenAL32/alState.c | |
parent | 436db28a3f9f64a0348682a1e9888ef72d531153 (diff) |
Convert alState.c to C++
Diffstat (limited to 'OpenAL32/alState.c')
-rw-r--r-- | OpenAL32/alState.c | 900 |
1 files changed, 0 insertions, 900 deletions
diff --git a/OpenAL32/alState.c b/OpenAL32/alState.c deleted file mode 100644 index 8be08435..00000000 --- a/OpenAL32/alState.c +++ /dev/null @@ -1,900 +0,0 @@ -/** - * OpenAL cross platform audio library - * Copyright (C) 1999-2000 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., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * Or go to http://www.gnu.org/copyleft/lgpl.html - */ - -#include "config.h" - -#include "version.h" - -#include <stdlib.h> -#include "alMain.h" -#include "AL/alc.h" -#include "AL/al.h" -#include "AL/alext.h" -#include "alError.h" -#include "alListener.h" -#include "alSource.h" -#include "alAuxEffectSlot.h" - -#include "backends/base.h" - - -static const ALchar alVendor[] = "OpenAL Community"; -static const ALchar alVersion[] = "1.1 ALSOFT "ALSOFT_VERSION; -static const ALchar alRenderer[] = "OpenAL Soft"; - -// Error Messages -static const ALchar alNoError[] = "No Error"; -static const ALchar alErrInvalidName[] = "Invalid Name"; -static const ALchar alErrInvalidEnum[] = "Invalid Enum"; -static const ALchar alErrInvalidValue[] = "Invalid Value"; -static const ALchar alErrInvalidOp[] = "Invalid Operation"; -static const ALchar alErrOutOfMemory[] = "Out of Memory"; - -/* Resampler strings */ -static const ALchar alPointResampler[] = "Nearest"; -static const ALchar alLinearResampler[] = "Linear"; -static const ALchar alCubicResampler[] = "Cubic"; -static const ALchar alBSinc12Resampler[] = "11th order Sinc"; -static const ALchar alBSinc24Resampler[] = "23rd order Sinc"; - -/* WARNING: Non-standard export! Not part of any extension, or exposed in the - * alcFunctions list. - */ -AL_API const ALchar* AL_APIENTRY alsoft_get_version(void) -{ - const char *spoof = getenv("ALSOFT_SPOOF_VERSION"); - if(spoof && spoof[0] != '\0') return spoof; - return ALSOFT_VERSION; -} - -#define DO_UPDATEPROPS() do { \ - if(!ATOMIC_LOAD(&context->DeferUpdates, almemory_order_acquire)) \ - UpdateContextProps(context); \ - else \ - ATOMIC_STORE(&context->PropsClean, AL_FALSE, almemory_order_release); \ -} while(0) - - -AL_API ALvoid AL_APIENTRY alEnable(ALenum capability) -{ - ALCcontext *context; - - context = GetContextRef(); - if(!context) return; - - almtx_lock(&context->PropLock); - switch(capability) - { - case AL_SOURCE_DISTANCE_MODEL: - context->SourceDistanceModel = AL_TRUE; - DO_UPDATEPROPS(); - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid enable property 0x%04x", capability); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); -} - -AL_API ALvoid AL_APIENTRY alDisable(ALenum capability) -{ - ALCcontext *context; - - context = GetContextRef(); - if(!context) return; - - almtx_lock(&context->PropLock); - switch(capability) - { - case AL_SOURCE_DISTANCE_MODEL: - context->SourceDistanceModel = AL_FALSE; - DO_UPDATEPROPS(); - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid disable property 0x%04x", capability); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); -} - -AL_API ALboolean AL_APIENTRY alIsEnabled(ALenum capability) -{ - ALCcontext *context; - ALboolean value=AL_FALSE; - - context = GetContextRef(); - if(!context) return AL_FALSE; - - almtx_lock(&context->PropLock); - switch(capability) - { - case AL_SOURCE_DISTANCE_MODEL: - value = context->SourceDistanceModel; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid is enabled property 0x%04x", capability); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); - return value; -} - -AL_API ALboolean AL_APIENTRY alGetBoolean(ALenum pname) -{ - ALCcontext *context; - ALboolean value=AL_FALSE; - - context = GetContextRef(); - if(!context) return AL_FALSE; - - almtx_lock(&context->PropLock); - switch(pname) - { - case AL_DOPPLER_FACTOR: - if(context->DopplerFactor != 0.0f) - value = AL_TRUE; - break; - - case AL_DOPPLER_VELOCITY: - if(context->DopplerVelocity != 0.0f) - value = AL_TRUE; - break; - - case AL_DISTANCE_MODEL: - if(context->DistanceModel == AL_INVERSE_DISTANCE_CLAMPED) - value = AL_TRUE; - break; - - case AL_SPEED_OF_SOUND: - if(context->SpeedOfSound != 0.0f) - value = AL_TRUE; - break; - - case AL_DEFERRED_UPDATES_SOFT: - if(ATOMIC_LOAD(&context->DeferUpdates, almemory_order_acquire)) - value = AL_TRUE; - break; - - case AL_GAIN_LIMIT_SOFT: - if(GAIN_MIX_MAX/context->GainBoost != 0.0f) - value = AL_TRUE; - break; - - case AL_NUM_RESAMPLERS_SOFT: - /* Always non-0. */ - value = AL_TRUE; - break; - - case AL_DEFAULT_RESAMPLER_SOFT: - value = ResamplerDefault ? AL_TRUE : AL_FALSE; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid boolean property 0x%04x", pname); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); - return value; -} - -AL_API ALdouble AL_APIENTRY alGetDouble(ALenum pname) -{ - ALCcontext *context; - ALdouble value = 0.0; - - context = GetContextRef(); - if(!context) return 0.0; - - almtx_lock(&context->PropLock); - switch(pname) - { - case AL_DOPPLER_FACTOR: - value = (ALdouble)context->DopplerFactor; - break; - - case AL_DOPPLER_VELOCITY: - value = (ALdouble)context->DopplerVelocity; - break; - - case AL_DISTANCE_MODEL: - value = (ALdouble)context->DistanceModel; - break; - - case AL_SPEED_OF_SOUND: - value = (ALdouble)context->SpeedOfSound; - break; - - case AL_DEFERRED_UPDATES_SOFT: - if(ATOMIC_LOAD(&context->DeferUpdates, almemory_order_acquire)) - value = (ALdouble)AL_TRUE; - break; - - case AL_GAIN_LIMIT_SOFT: - value = (ALdouble)GAIN_MIX_MAX/context->GainBoost; - break; - - case AL_NUM_RESAMPLERS_SOFT: - value = (ALdouble)(ResamplerMax + 1); - break; - - case AL_DEFAULT_RESAMPLER_SOFT: - value = (ALdouble)ResamplerDefault; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid double property 0x%04x", pname); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); - return value; -} - -AL_API ALfloat AL_APIENTRY alGetFloat(ALenum pname) -{ - ALCcontext *context; - ALfloat value = 0.0f; - - context = GetContextRef(); - if(!context) return 0.0f; - - almtx_lock(&context->PropLock); - switch(pname) - { - case AL_DOPPLER_FACTOR: - value = context->DopplerFactor; - break; - - case AL_DOPPLER_VELOCITY: - value = context->DopplerVelocity; - break; - - case AL_DISTANCE_MODEL: - value = (ALfloat)context->DistanceModel; - break; - - case AL_SPEED_OF_SOUND: - value = context->SpeedOfSound; - break; - - case AL_DEFERRED_UPDATES_SOFT: - if(ATOMIC_LOAD(&context->DeferUpdates, almemory_order_acquire)) - value = (ALfloat)AL_TRUE; - break; - - case AL_GAIN_LIMIT_SOFT: - value = GAIN_MIX_MAX/context->GainBoost; - break; - - case AL_NUM_RESAMPLERS_SOFT: - value = (ALfloat)(ResamplerMax + 1); - break; - - case AL_DEFAULT_RESAMPLER_SOFT: - value = (ALfloat)ResamplerDefault; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid float property 0x%04x", pname); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); - return value; -} - -AL_API ALint AL_APIENTRY alGetInteger(ALenum pname) -{ - ALCcontext *context; - ALint value = 0; - - context = GetContextRef(); - if(!context) return 0; - - almtx_lock(&context->PropLock); - switch(pname) - { - case AL_DOPPLER_FACTOR: - value = (ALint)context->DopplerFactor; - break; - - case AL_DOPPLER_VELOCITY: - value = (ALint)context->DopplerVelocity; - break; - - case AL_DISTANCE_MODEL: - value = (ALint)context->DistanceModel; - break; - - case AL_SPEED_OF_SOUND: - value = (ALint)context->SpeedOfSound; - break; - - case AL_DEFERRED_UPDATES_SOFT: - if(ATOMIC_LOAD(&context->DeferUpdates, almemory_order_acquire)) - value = (ALint)AL_TRUE; - break; - - case AL_GAIN_LIMIT_SOFT: - value = (ALint)(GAIN_MIX_MAX/context->GainBoost); - break; - - case AL_NUM_RESAMPLERS_SOFT: - value = ResamplerMax + 1; - break; - - case AL_DEFAULT_RESAMPLER_SOFT: - value = ResamplerDefault; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid integer property 0x%04x", pname); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); - return value; -} - -AL_API ALint64SOFT AL_APIENTRY alGetInteger64SOFT(ALenum pname) -{ - ALCcontext *context; - ALint64SOFT value = 0; - - context = GetContextRef(); - if(!context) return 0; - - almtx_lock(&context->PropLock); - switch(pname) - { - case AL_DOPPLER_FACTOR: - value = (ALint64SOFT)context->DopplerFactor; - break; - - case AL_DOPPLER_VELOCITY: - value = (ALint64SOFT)context->DopplerVelocity; - break; - - case AL_DISTANCE_MODEL: - value = (ALint64SOFT)context->DistanceModel; - break; - - case AL_SPEED_OF_SOUND: - value = (ALint64SOFT)context->SpeedOfSound; - break; - - case AL_DEFERRED_UPDATES_SOFT: - if(ATOMIC_LOAD(&context->DeferUpdates, almemory_order_acquire)) - value = (ALint64SOFT)AL_TRUE; - break; - - case AL_GAIN_LIMIT_SOFT: - value = (ALint64SOFT)(GAIN_MIX_MAX/context->GainBoost); - break; - - case AL_NUM_RESAMPLERS_SOFT: - value = (ALint64SOFT)(ResamplerMax + 1); - break; - - case AL_DEFAULT_RESAMPLER_SOFT: - value = (ALint64SOFT)ResamplerDefault; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid integer64 property 0x%04x", pname); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); - return value; -} - -AL_API void* AL_APIENTRY alGetPointerSOFT(ALenum pname) -{ - ALCcontext *context; - void *value = NULL; - - context = GetContextRef(); - if(!context) return NULL; - - almtx_lock(&context->PropLock); - switch(pname) - { - case AL_EVENT_CALLBACK_FUNCTION_SOFT: - value = context->EventCb; - break; - - case AL_EVENT_CALLBACK_USER_PARAM_SOFT: - value = context->EventParam; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid pointer property 0x%04x", pname); - } - almtx_unlock(&context->PropLock); - - ALCcontext_DecRef(context); - return value; -} - -AL_API ALvoid AL_APIENTRY alGetBooleanv(ALenum pname, ALboolean *values) -{ - ALCcontext *context; - - if(values) - { - switch(pname) - { - case AL_DOPPLER_FACTOR: - case AL_DOPPLER_VELOCITY: - case AL_DISTANCE_MODEL: - case AL_SPEED_OF_SOUND: - case AL_DEFERRED_UPDATES_SOFT: - case AL_GAIN_LIMIT_SOFT: - case AL_NUM_RESAMPLERS_SOFT: - case AL_DEFAULT_RESAMPLER_SOFT: - values[0] = alGetBoolean(pname); - return; - } - } - - context = GetContextRef(); - if(!context) return; - - if(!values) - alSetError(context, AL_INVALID_VALUE, "NULL pointer"); - switch(pname) - { - default: - alSetError(context, AL_INVALID_VALUE, "Invalid boolean-vector property 0x%04x", pname); - } - - ALCcontext_DecRef(context); -} - -AL_API ALvoid AL_APIENTRY alGetDoublev(ALenum pname, ALdouble *values) -{ - ALCcontext *context; - - if(values) - { - switch(pname) - { - case AL_DOPPLER_FACTOR: - case AL_DOPPLER_VELOCITY: - case AL_DISTANCE_MODEL: - case AL_SPEED_OF_SOUND: - case AL_DEFERRED_UPDATES_SOFT: - case AL_GAIN_LIMIT_SOFT: - case AL_NUM_RESAMPLERS_SOFT: - case AL_DEFAULT_RESAMPLER_SOFT: - values[0] = alGetDouble(pname); - return; - } - } - - context = GetContextRef(); - if(!context) return; - - if(!values) - alSetError(context, AL_INVALID_VALUE, "NULL pointer"); - switch(pname) - { - default: - alSetError(context, AL_INVALID_VALUE, "Invalid double-vector property 0x%04x", pname); - } - - ALCcontext_DecRef(context); -} - -AL_API ALvoid AL_APIENTRY alGetFloatv(ALenum pname, ALfloat *values) -{ - ALCcontext *context; - - if(values) - { - switch(pname) - { - case AL_DOPPLER_FACTOR: - case AL_DOPPLER_VELOCITY: - case AL_DISTANCE_MODEL: - case AL_SPEED_OF_SOUND: - case AL_DEFERRED_UPDATES_SOFT: - case AL_GAIN_LIMIT_SOFT: - case AL_NUM_RESAMPLERS_SOFT: - case AL_DEFAULT_RESAMPLER_SOFT: - values[0] = alGetFloat(pname); - return; - } - } - - context = GetContextRef(); - if(!context) return; - - if(!values) - alSetError(context, AL_INVALID_VALUE, "NULL pointer"); - switch(pname) - { - default: - alSetError(context, AL_INVALID_VALUE, "Invalid float-vector property 0x%04x", pname); - } - - ALCcontext_DecRef(context); -} - -AL_API ALvoid AL_APIENTRY alGetIntegerv(ALenum pname, ALint *values) -{ - ALCcontext *context; - - if(values) - { - switch(pname) - { - case AL_DOPPLER_FACTOR: - case AL_DOPPLER_VELOCITY: - case AL_DISTANCE_MODEL: - case AL_SPEED_OF_SOUND: - case AL_DEFERRED_UPDATES_SOFT: - case AL_GAIN_LIMIT_SOFT: - case AL_NUM_RESAMPLERS_SOFT: - case AL_DEFAULT_RESAMPLER_SOFT: - values[0] = alGetInteger(pname); - return; - } - } - - context = GetContextRef(); - if(!context) return; - - if(!values) - alSetError(context, AL_INVALID_VALUE, "NULL pointer"); - switch(pname) - { - default: - alSetError(context, AL_INVALID_VALUE, "Invalid integer-vector property 0x%04x", pname); - } - - ALCcontext_DecRef(context); -} - -AL_API void AL_APIENTRY alGetInteger64vSOFT(ALenum pname, ALint64SOFT *values) -{ - ALCcontext *context; - - if(values) - { - switch(pname) - { - case AL_DOPPLER_FACTOR: - case AL_DOPPLER_VELOCITY: - case AL_DISTANCE_MODEL: - case AL_SPEED_OF_SOUND: - case AL_DEFERRED_UPDATES_SOFT: - case AL_GAIN_LIMIT_SOFT: - case AL_NUM_RESAMPLERS_SOFT: - case AL_DEFAULT_RESAMPLER_SOFT: - values[0] = alGetInteger64SOFT(pname); - return; - } - } - - context = GetContextRef(); - if(!context) return; - - if(!values) - alSetError(context, AL_INVALID_VALUE, "NULL pointer"); - switch(pname) - { - default: - alSetError(context, AL_INVALID_VALUE, "Invalid integer64-vector property 0x%04x", pname); - } - - ALCcontext_DecRef(context); -} - -AL_API void AL_APIENTRY alGetPointervSOFT(ALenum pname, void **values) -{ - ALCcontext *context; - - if(values) - { - switch(pname) - { - case AL_EVENT_CALLBACK_FUNCTION_SOFT: - case AL_EVENT_CALLBACK_USER_PARAM_SOFT: - values[0] = alGetPointerSOFT(pname); - return; - } - } - - context = GetContextRef(); - if(!context) return; - - if(!values) - alSetError(context, AL_INVALID_VALUE, "NULL pointer"); - switch(pname) - { - default: - alSetError(context, AL_INVALID_VALUE, "Invalid pointer-vector property 0x%04x", pname); - } - - ALCcontext_DecRef(context); -} - -AL_API const ALchar* AL_APIENTRY alGetString(ALenum pname) -{ - const ALchar *value = NULL; - ALCcontext *context; - - context = GetContextRef(); - if(!context) return NULL; - - switch(pname) - { - case AL_VENDOR: - value = alVendor; - break; - - case AL_VERSION: - value = alVersion; - break; - - case AL_RENDERER: - value = alRenderer; - break; - - case AL_EXTENSIONS: - value = context->ExtensionList; - break; - - case AL_NO_ERROR: - value = alNoError; - break; - - case AL_INVALID_NAME: - value = alErrInvalidName; - break; - - case AL_INVALID_ENUM: - value = alErrInvalidEnum; - break; - - case AL_INVALID_VALUE: - value = alErrInvalidValue; - break; - - case AL_INVALID_OPERATION: - value = alErrInvalidOp; - break; - - case AL_OUT_OF_MEMORY: - value = alErrOutOfMemory; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid string property 0x%04x", pname); - } - - ALCcontext_DecRef(context); - return value; -} - -AL_API ALvoid AL_APIENTRY alDopplerFactor(ALfloat value) -{ - ALCcontext *context; - - context = GetContextRef(); - if(!context) return; - - if(!(value >= 0.0f && isfinite(value))) - alSetError(context, AL_INVALID_VALUE, "Doppler factor %f out of range", value); - else - { - almtx_lock(&context->PropLock); - context->DopplerFactor = value; - DO_UPDATEPROPS(); - almtx_unlock(&context->PropLock); - } - - ALCcontext_DecRef(context); -} - -AL_API ALvoid AL_APIENTRY alDopplerVelocity(ALfloat value) -{ - ALCcontext *context; - - context = GetContextRef(); - if(!context) return; - - if((ATOMIC_LOAD(&context->EnabledEvts, almemory_order_relaxed)&EventType_Deprecated)) - { - static const ALCchar msg[] = - "alDopplerVelocity is deprecated in AL1.1, use alSpeedOfSound"; - const ALsizei msglen = (ALsizei)strlen(msg); - ALbitfieldSOFT enabledevts; - almtx_lock(&context->EventCbLock); - enabledevts = ATOMIC_LOAD(&context->EnabledEvts, almemory_order_relaxed); - if((enabledevts&EventType_Deprecated) && context->EventCb) - (*context->EventCb)(AL_EVENT_TYPE_DEPRECATED_SOFT, 0, 0, msglen, msg, - context->EventParam); - almtx_unlock(&context->EventCbLock); - } - - if(!(value >= 0.0f && isfinite(value))) - alSetError(context, AL_INVALID_VALUE, "Doppler velocity %f out of range", value); - else - { - almtx_lock(&context->PropLock); - context->DopplerVelocity = value; - DO_UPDATEPROPS(); - almtx_unlock(&context->PropLock); - } - - ALCcontext_DecRef(context); -} - -AL_API ALvoid AL_APIENTRY alSpeedOfSound(ALfloat value) -{ - ALCcontext *context; - - context = GetContextRef(); - if(!context) return; - - if(!(value > 0.0f && isfinite(value))) - alSetError(context, AL_INVALID_VALUE, "Speed of sound %f out of range", value); - else - { - almtx_lock(&context->PropLock); - context->SpeedOfSound = value; - DO_UPDATEPROPS(); - almtx_unlock(&context->PropLock); - } - - ALCcontext_DecRef(context); -} - -AL_API ALvoid AL_APIENTRY alDistanceModel(ALenum value) -{ - ALCcontext *context; - - context = GetContextRef(); - if(!context) return; - - if(!(value == AL_INVERSE_DISTANCE || value == AL_INVERSE_DISTANCE_CLAMPED || - value == AL_LINEAR_DISTANCE || value == AL_LINEAR_DISTANCE_CLAMPED || - value == AL_EXPONENT_DISTANCE || value == AL_EXPONENT_DISTANCE_CLAMPED || - value == AL_NONE)) - alSetError(context, AL_INVALID_VALUE, "Distance model 0x%04x out of range", value); - else - { - almtx_lock(&context->PropLock); - context->DistanceModel = value; - if(!context->SourceDistanceModel) - DO_UPDATEPROPS(); - almtx_unlock(&context->PropLock); - } - - ALCcontext_DecRef(context); -} - - -AL_API ALvoid AL_APIENTRY alDeferUpdatesSOFT(void) -{ - ALCcontext *context; - - context = GetContextRef(); - if(!context) return; - - ALCcontext_DeferUpdates(context); - - ALCcontext_DecRef(context); -} - -AL_API ALvoid AL_APIENTRY alProcessUpdatesSOFT(void) -{ - ALCcontext *context; - - context = GetContextRef(); - if(!context) return; - - ALCcontext_ProcessUpdates(context); - - ALCcontext_DecRef(context); -} - - -AL_API const ALchar* AL_APIENTRY alGetStringiSOFT(ALenum pname, ALsizei index) -{ - const char *ResamplerNames[] = { - alPointResampler, alLinearResampler, - alCubicResampler, alBSinc12Resampler, - alBSinc24Resampler, - }; - const ALchar *value = NULL; - ALCcontext *context; - - static_assert(COUNTOF(ResamplerNames) == ResamplerMax+1, "Incorrect ResamplerNames list"); - - context = GetContextRef(); - if(!context) return NULL; - - switch(pname) - { - case AL_RESAMPLER_NAME_SOFT: - if(index < 0 || (size_t)index >= COUNTOF(ResamplerNames)) - SETERR_GOTO(context, AL_INVALID_VALUE, done, "Resampler name index %d out of range", - index); - value = ResamplerNames[index]; - break; - - default: - alSetError(context, AL_INVALID_VALUE, "Invalid string indexed property"); - } - -done: - ALCcontext_DecRef(context); - return value; -} - - -void UpdateContextProps(ALCcontext *context) -{ - struct ALcontextProps *props; - - /* Get an unused proprty container, or allocate a new one as needed. */ - props = ATOMIC_LOAD(&context->FreeContextProps, almemory_order_acquire); - if(!props) - props = al_calloc(16, sizeof(*props)); - else - { - struct ALcontextProps *next; - do { - next = ATOMIC_LOAD(&props->next, almemory_order_relaxed); - } while(ATOMIC_COMPARE_EXCHANGE_PTR_WEAK(&context->FreeContextProps, &props, next, - almemory_order_seq_cst, almemory_order_acquire) == 0); - } - - /* Copy in current property values. */ - props->MetersPerUnit = context->MetersPerUnit; - - props->DopplerFactor = context->DopplerFactor; - props->DopplerVelocity = context->DopplerVelocity; - props->SpeedOfSound = context->SpeedOfSound; - - props->SourceDistanceModel = context->SourceDistanceModel; - props->DistanceModel = context->DistanceModel; - - /* Set the new container for updating internal parameters. */ - props = ATOMIC_EXCHANGE_PTR(&context->Update, props, almemory_order_acq_rel); - if(props) - { - /* If there was an unused update container, put it back in the - * freelist. - */ - ATOMIC_REPLACE_HEAD(struct ALcontextProps*, &context->FreeContextProps, props); - } -} |