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1212523470
AuroraOpenALSoft/Alc/ALc.c
Chris Robinson 1212523470 Implement the double and int64 source setters 
Note that currently the int64 setters do not range check before being passed to
the int setters, erroneously chopping off the upper bits.
2012-10-13 00:56:39 -07:00

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/**
* 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 <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <memory.h>
#include <ctype.h>
#include <signal.h>
#include "alMain.h"
#include "alSource.h"
#include "alListener.h"
#include "alThunk.h"
#include "alSource.h"
#include "alBuffer.h"
#include "alAuxEffectSlot.h"
#include "alError.h"
#include "bs2b.h"
#include "alu.h"
/************************************************
* Backends
************************************************/
#define EmptyFuncs { NULL, NULL, NULL, NULL, 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;
/************************************************
* Functions, enums, and errors
************************************************/
typedef struct ALCfunction {
const ALCchar *funcName;
ALCvoid *address;
} ALCfunction;
typedef struct ALCenums {
const ALCchar *enumName;
ALCenum value;
} ALCenums;
#define DECL(x) { #x, (ALCvoid*)(x) }
static const ALCfunction alcFunctions[] = {
DECL(alcCreateContext),
DECL(alcMakeContextCurrent),
DECL(alcProcessContext),
DECL(alcSuspendContext),
DECL(alcDestroyContext),
DECL(alcGetCurrentContext),
DECL(alcGetContextsDevice),
DECL(alcOpenDevice),
DECL(alcCloseDevice),
DECL(alcGetError),
DECL(alcIsExtensionPresent),
DECL(alcGetProcAddress),
DECL(alcGetEnumValue),
DECL(alcGetString),
DECL(alcGetIntegerv),
DECL(alcCaptureOpenDevice),
DECL(alcCaptureCloseDevice),
DECL(alcCaptureStart),
DECL(alcCaptureStop),
DECL(alcCaptureSamples),
DECL(alcSetThreadContext),
DECL(alcGetThreadContext),
DECL(alcLoopbackOpenDeviceSOFT),
DECL(alcIsRenderFormatSupportedSOFT),
DECL(alcRenderSamplesSOFT),
DECL(alEnable),
DECL(alDisable),
DECL(alIsEnabled),
DECL(alGetString),
DECL(alGetBooleanv),
DECL(alGetIntegerv),
DECL(alGetFloatv),
DECL(alGetDoublev),
DECL(alGetBoolean),
DECL(alGetInteger),
DECL(alGetFloat),
DECL(alGetDouble),
DECL(alGetError),
DECL(alIsExtensionPresent),
DECL(alGetProcAddress),
DECL(alGetEnumValue),
DECL(alListenerf),
DECL(alListener3f),
DECL(alListenerfv),
DECL(alListeneri),
DECL(alListener3i),
DECL(alListeneriv),
DECL(alGetListenerf),
DECL(alGetListener3f),
DECL(alGetListenerfv),
DECL(alGetListeneri),
DECL(alGetListener3i),
DECL(alGetListeneriv),
DECL(alGenSources),
DECL(alDeleteSources),
DECL(alIsSource),
DECL(alSourcef),
DECL(alSource3f),
DECL(alSourcefv),
DECL(alSourcei),
DECL(alSource3i),
DECL(alSourceiv),
DECL(alGetSourcef),
DECL(alGetSource3f),
DECL(alGetSourcefv),
DECL(alGetSourcei),
DECL(alGetSource3i),
DECL(alGetSourceiv),
DECL(alSourcePlayv),
DECL(alSourceStopv),
DECL(alSourceRewindv),
DECL(alSourcePausev),
DECL(alSourcePlay),
DECL(alSourceStop),
DECL(alSourceRewind),
DECL(alSourcePause),
DECL(alSourceQueueBuffers),
DECL(alSourceUnqueueBuffers),
DECL(alGenBuffers),
DECL(alDeleteBuffers),
DECL(alIsBuffer),
DECL(alBufferData),
DECL(alBufferf),
DECL(alBuffer3f),
DECL(alBufferfv),
DECL(alBufferi),
DECL(alBuffer3i),
DECL(alBufferiv),
DECL(alGetBufferf),
DECL(alGetBuffer3f),
DECL(alGetBufferfv),
DECL(alGetBufferi),
DECL(alGetBuffer3i),
DECL(alGetBufferiv),
DECL(alDopplerFactor),
DECL(alDopplerVelocity),
DECL(alSpeedOfSound),
DECL(alDistanceModel),
DECL(alGenFilters),
DECL(alDeleteFilters),
DECL(alIsFilter),
DECL(alFilteri),
DECL(alFilteriv),
DECL(alFilterf),
DECL(alFilterfv),
DECL(alGetFilteri),
DECL(alGetFilteriv),
DECL(alGetFilterf),
DECL(alGetFilterfv),
DECL(alGenEffects),
DECL(alDeleteEffects),
DECL(alIsEffect),
DECL(alEffecti),
DECL(alEffectiv),
DECL(alEffectf),
DECL(alEffectfv),
DECL(alGetEffecti),
DECL(alGetEffectiv),
DECL(alGetEffectf),
DECL(alGetEffectfv),
DECL(alGenAuxiliaryEffectSlots),
DECL(alDeleteAuxiliaryEffectSlots),
DECL(alIsAuxiliaryEffectSlot),
DECL(alAuxiliaryEffectSloti),
DECL(alAuxiliaryEffectSlotiv),
DECL(alAuxiliaryEffectSlotf),
DECL(alAuxiliaryEffectSlotfv),
DECL(alGetAuxiliaryEffectSloti),
DECL(alGetAuxiliaryEffectSlotiv),
DECL(alGetAuxiliaryEffectSlotf),
DECL(alGetAuxiliaryEffectSlotfv),
DECL(alBufferSubDataSOFT),
DECL(alBufferSamplesSOFT),
DECL(alBufferSubSamplesSOFT),
DECL(alGetBufferSamplesSOFT),
DECL(alIsBufferFormatSupportedSOFT),
DECL(alDeferUpdatesSOFT),
DECL(alProcessUpdatesSOFT),
DECL(alSourcedSOFT),
DECL(alSource3dSOFT),
DECL(alSourcedvSOFT),
DECL(alGetSourcedSOFT),
DECL(alGetSource3dSOFT),
DECL(alGetSourcedvSOFT),
DECL(alSourcei64SOFT),
DECL(alSource3i64SOFT),
DECL(alSourcei64vSOFT),
DECL(alGetSourcei64SOFT),
DECL(alGetSource3i64SOFT),
DECL(alGetSourcei64vSOFT),
{ NULL, NULL }
};
#undef DECL
#define DECL(x) { #x, (x) }
static const ALCenums enumeration[] = {
DECL(ALC_INVALID),
DECL(ALC_FALSE),
DECL(ALC_TRUE),
DECL(ALC_MAJOR_VERSION),
DECL(ALC_MINOR_VERSION),
DECL(ALC_ATTRIBUTES_SIZE),
DECL(ALC_ALL_ATTRIBUTES),
DECL(ALC_DEFAULT_DEVICE_SPECIFIER),
DECL(ALC_DEVICE_SPECIFIER),
DECL(ALC_ALL_DEVICES_SPECIFIER),
DECL(ALC_DEFAULT_ALL_DEVICES_SPECIFIER),
DECL(ALC_EXTENSIONS),
DECL(ALC_FREQUENCY),
DECL(ALC_REFRESH),
DECL(ALC_SYNC),
DECL(ALC_MONO_SOURCES),
DECL(ALC_STEREO_SOURCES),
DECL(ALC_CAPTURE_DEVICE_SPECIFIER),
DECL(ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER),
DECL(ALC_CAPTURE_SAMPLES),
DECL(ALC_CONNECTED),
DECL(ALC_EFX_MAJOR_VERSION),
DECL(ALC_EFX_MINOR_VERSION),
DECL(ALC_MAX_AUXILIARY_SENDS),
DECL(ALC_FORMAT_CHANNELS_SOFT),
DECL(ALC_FORMAT_TYPE_SOFT),
DECL(ALC_MONO_SOFT),
DECL(ALC_STEREO_SOFT),
DECL(ALC_QUAD_SOFT),
DECL(ALC_5POINT1_SOFT),
DECL(ALC_6POINT1_SOFT),
DECL(ALC_7POINT1_SOFT),
DECL(ALC_BYTE_SOFT),
DECL(ALC_UNSIGNED_BYTE_SOFT),
DECL(ALC_SHORT_SOFT),
DECL(ALC_UNSIGNED_SHORT_SOFT),
DECL(ALC_INT_SOFT),
DECL(ALC_UNSIGNED_INT_SOFT),
DECL(ALC_FLOAT_SOFT),
DECL(ALC_NO_ERROR),
DECL(ALC_INVALID_DEVICE),
DECL(ALC_INVALID_CONTEXT),
DECL(ALC_INVALID_ENUM),
DECL(ALC_INVALID_VALUE),
DECL(ALC_OUT_OF_MEMORY),
DECL(AL_INVALID),
DECL(AL_NONE),
DECL(AL_FALSE),
DECL(AL_TRUE),
DECL(AL_SOURCE_RELATIVE),
DECL(AL_CONE_INNER_ANGLE),
DECL(AL_CONE_OUTER_ANGLE),
DECL(AL_PITCH),
DECL(AL_POSITION),
DECL(AL_DIRECTION),
DECL(AL_VELOCITY),
DECL(AL_LOOPING),
DECL(AL_BUFFER),
DECL(AL_GAIN),
DECL(AL_MIN_GAIN),
DECL(AL_MAX_GAIN),
DECL(AL_ORIENTATION),
DECL(AL_REFERENCE_DISTANCE),
DECL(AL_ROLLOFF_FACTOR),
DECL(AL_CONE_OUTER_GAIN),
DECL(AL_MAX_DISTANCE),
DECL(AL_SEC_OFFSET),
DECL(AL_SAMPLE_OFFSET),
DECL(AL_SAMPLE_RW_OFFSETS_SOFT),
DECL(AL_BYTE_OFFSET),
DECL(AL_BYTE_RW_OFFSETS_SOFT),
DECL(AL_SOURCE_TYPE),
DECL(AL_STATIC),
DECL(AL_STREAMING),
DECL(AL_UNDETERMINED),
DECL(AL_METERS_PER_UNIT),
DECL(AL_DIRECT_CHANNELS_SOFT),
DECL(AL_DIRECT_FILTER),
DECL(AL_AUXILIARY_SEND_FILTER),
DECL(AL_AIR_ABSORPTION_FACTOR),
DECL(AL_ROOM_ROLLOFF_FACTOR),
DECL(AL_CONE_OUTER_GAINHF),
DECL(AL_DIRECT_FILTER_GAINHF_AUTO),
DECL(AL_AUXILIARY_SEND_FILTER_GAIN_AUTO),
DECL(AL_AUXILIARY_SEND_FILTER_GAINHF_AUTO),
DECL(AL_SOURCE_STATE),
DECL(AL_INITIAL),
DECL(AL_PLAYING),
DECL(AL_PAUSED),
DECL(AL_STOPPED),
DECL(AL_BUFFERS_QUEUED),
DECL(AL_BUFFERS_PROCESSED),
DECL(AL_FORMAT_MONO8),
DECL(AL_FORMAT_MONO16),
DECL(AL_FORMAT_MONO_FLOAT32),
DECL(AL_FORMAT_MONO_DOUBLE_EXT),
DECL(AL_FORMAT_STEREO8),
DECL(AL_FORMAT_STEREO16),
DECL(AL_FORMAT_STEREO_FLOAT32),
DECL(AL_FORMAT_STEREO_DOUBLE_EXT),
DECL(AL_FORMAT_MONO_IMA4),
DECL(AL_FORMAT_STEREO_IMA4),
DECL(AL_FORMAT_QUAD8_LOKI),
DECL(AL_FORMAT_QUAD16_LOKI),
DECL(AL_FORMAT_QUAD8),
DECL(AL_FORMAT_QUAD16),
DECL(AL_FORMAT_QUAD32),
DECL(AL_FORMAT_51CHN8),
DECL(AL_FORMAT_51CHN16),
DECL(AL_FORMAT_51CHN32),
DECL(AL_FORMAT_61CHN8),
DECL(AL_FORMAT_61CHN16),
DECL(AL_FORMAT_61CHN32),
DECL(AL_FORMAT_71CHN8),
DECL(AL_FORMAT_71CHN16),
DECL(AL_FORMAT_71CHN32),
DECL(AL_FORMAT_REAR8),
DECL(AL_FORMAT_REAR16),
DECL(AL_FORMAT_REAR32),
DECL(AL_FORMAT_MONO_MULAW),
DECL(AL_FORMAT_MONO_MULAW_EXT),
DECL(AL_FORMAT_STEREO_MULAW),
DECL(AL_FORMAT_STEREO_MULAW_EXT),
DECL(AL_FORMAT_QUAD_MULAW),
DECL(AL_FORMAT_51CHN_MULAW),
DECL(AL_FORMAT_61CHN_MULAW),
DECL(AL_FORMAT_71CHN_MULAW),
DECL(AL_FORMAT_REAR_MULAW),
DECL(AL_FORMAT_MONO_ALAW_EXT),
DECL(AL_FORMAT_STEREO_ALAW_EXT),
DECL(AL_MONO8_SOFT),
DECL(AL_MONO16_SOFT),
DECL(AL_MONO32F_SOFT),
DECL(AL_STEREO8_SOFT),
DECL(AL_STEREO16_SOFT),
DECL(AL_STEREO32F_SOFT),
DECL(AL_QUAD8_SOFT),
DECL(AL_QUAD16_SOFT),
DECL(AL_QUAD32F_SOFT),
DECL(AL_REAR8_SOFT),
DECL(AL_REAR16_SOFT),
DECL(AL_REAR32F_SOFT),
DECL(AL_5POINT1_8_SOFT),
DECL(AL_5POINT1_16_SOFT),
DECL(AL_5POINT1_32F_SOFT),
DECL(AL_6POINT1_8_SOFT),
DECL(AL_6POINT1_16_SOFT),
DECL(AL_6POINT1_32F_SOFT),
DECL(AL_7POINT1_8_SOFT),
DECL(AL_7POINT1_16_SOFT),
DECL(AL_7POINT1_32F_SOFT),
DECL(AL_MONO_SOFT),
DECL(AL_STEREO_SOFT),
DECL(AL_QUAD_SOFT),
DECL(AL_REAR_SOFT),
DECL(AL_5POINT1_SOFT),
DECL(AL_6POINT1_SOFT),
DECL(AL_7POINT1_SOFT),
DECL(AL_BYTE_SOFT),
DECL(AL_UNSIGNED_BYTE_SOFT),
DECL(AL_SHORT_SOFT),
DECL(AL_UNSIGNED_SHORT_SOFT),
DECL(AL_INT_SOFT),
DECL(AL_UNSIGNED_INT_SOFT),
DECL(AL_FLOAT_SOFT),
DECL(AL_DOUBLE_SOFT),
DECL(AL_BYTE3_SOFT),
DECL(AL_UNSIGNED_BYTE3_SOFT),
DECL(AL_FREQUENCY),
DECL(AL_BITS),
DECL(AL_CHANNELS),
DECL(AL_SIZE),
DECL(AL_INTERNAL_FORMAT_SOFT),
DECL(AL_BYTE_LENGTH_SOFT),
DECL(AL_SAMPLE_LENGTH_SOFT),
DECL(AL_SEC_LENGTH_SOFT),
DECL(AL_UNUSED),
DECL(AL_PENDING),
DECL(AL_PROCESSED),
DECL(AL_NO_ERROR),
DECL(AL_INVALID_NAME),
DECL(AL_INVALID_ENUM),
DECL(AL_INVALID_VALUE),
DECL(AL_INVALID_OPERATION),
DECL(AL_OUT_OF_MEMORY),
DECL(AL_VENDOR),
DECL(AL_VERSION),
DECL(AL_RENDERER),
DECL(AL_EXTENSIONS),
DECL(AL_DOPPLER_FACTOR),
DECL(AL_DOPPLER_VELOCITY),
DECL(AL_DISTANCE_MODEL),
DECL(AL_SPEED_OF_SOUND),
DECL(AL_SOURCE_DISTANCE_MODEL),
DECL(AL_DEFERRED_UPDATES_SOFT),
DECL(AL_INVERSE_DISTANCE),
DECL(AL_INVERSE_DISTANCE_CLAMPED),
DECL(AL_LINEAR_DISTANCE),
DECL(AL_LINEAR_DISTANCE_CLAMPED),
DECL(AL_EXPONENT_DISTANCE),
DECL(AL_EXPONENT_DISTANCE_CLAMPED),
DECL(AL_FILTER_TYPE),
DECL(AL_FILTER_NULL),
DECL(AL_FILTER_LOWPASS),
#if 0
DECL(AL_FILTER_HIGHPASS),
DECL(AL_FILTER_BANDPASS),
#endif
DECL(AL_LOWPASS_GAIN),
DECL(AL_LOWPASS_GAINHF),
DECL(AL_EFFECT_TYPE),
DECL(AL_EFFECT_NULL),
DECL(AL_EFFECT_REVERB),
DECL(AL_EFFECT_EAXREVERB),
#if 0
DECL(AL_EFFECT_CHORUS),
DECL(AL_EFFECT_DISTORTION),
#endif
DECL(AL_EFFECT_ECHO),
#if 0
DECL(AL_EFFECT_FLANGER),
DECL(AL_EFFECT_FREQUENCY_SHIFTER),
DECL(AL_EFFECT_VOCAL_MORPHER),
DECL(AL_EFFECT_PITCH_SHIFTER),
#endif
DECL(AL_EFFECT_RING_MODULATOR),
#if 0
DECL(AL_EFFECT_AUTOWAH),
DECL(AL_EFFECT_COMPRESSOR),
DECL(AL_EFFECT_EQUALIZER),
#endif
DECL(AL_EFFECT_DEDICATED_LOW_FREQUENCY_EFFECT),
DECL(AL_EFFECT_DEDICATED_DIALOGUE),
DECL(AL_EAXREVERB_DENSITY),
DECL(AL_EAXREVERB_DIFFUSION),
DECL(AL_EAXREVERB_GAIN),
DECL(AL_EAXREVERB_GAINHF),
DECL(AL_EAXREVERB_GAINLF),
DECL(AL_EAXREVERB_DECAY_TIME),
DECL(AL_EAXREVERB_DECAY_HFRATIO),
DECL(AL_EAXREVERB_DECAY_LFRATIO),
DECL(AL_EAXREVERB_REFLECTIONS_GAIN),
DECL(AL_EAXREVERB_REFLECTIONS_DELAY),
DECL(AL_EAXREVERB_REFLECTIONS_PAN),
DECL(AL_EAXREVERB_LATE_REVERB_GAIN),
DECL(AL_EAXREVERB_LATE_REVERB_DELAY),
DECL(AL_EAXREVERB_LATE_REVERB_PAN),
DECL(AL_EAXREVERB_ECHO_TIME),
DECL(AL_EAXREVERB_ECHO_DEPTH),
DECL(AL_EAXREVERB_MODULATION_TIME),
DECL(AL_EAXREVERB_MODULATION_DEPTH),
DECL(AL_EAXREVERB_AIR_ABSORPTION_GAINHF),
DECL(AL_EAXREVERB_HFREFERENCE),
DECL(AL_EAXREVERB_LFREFERENCE),
DECL(AL_EAXREVERB_ROOM_ROLLOFF_FACTOR),
DECL(AL_EAXREVERB_DECAY_HFLIMIT),
DECL(AL_REVERB_DENSITY),
DECL(AL_REVERB_DIFFUSION),
DECL(AL_REVERB_GAIN),
DECL(AL_REVERB_GAINHF),
DECL(AL_REVERB_DECAY_TIME),
DECL(AL_REVERB_DECAY_HFRATIO),
DECL(AL_REVERB_REFLECTIONS_GAIN),
DECL(AL_REVERB_REFLECTIONS_DELAY),
DECL(AL_REVERB_LATE_REVERB_GAIN),
DECL(AL_REVERB_LATE_REVERB_DELAY),
DECL(AL_REVERB_AIR_ABSORPTION_GAINHF),
DECL(AL_REVERB_ROOM_ROLLOFF_FACTOR),
DECL(AL_REVERB_DECAY_HFLIMIT),
DECL(AL_ECHO_DELAY),
DECL(AL_ECHO_LRDELAY),
DECL(AL_ECHO_DAMPING),
DECL(AL_ECHO_FEEDBACK),
DECL(AL_ECHO_SPREAD),
DECL(AL_RING_MODULATOR_FREQUENCY),
DECL(AL_RING_MODULATOR_HIGHPASS_CUTOFF),
DECL(AL_RING_MODULATOR_WAVEFORM),
DECL(AL_DEDICATED_GAIN),
{ NULL, (ALCenum)0 }
};
#undef DECL
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";
/************************************************
* Global variables
************************************************/
/* Enumerated device names */
static const ALCchar alcDefaultName[] = "OpenAL Soft\0";
static ALCchar *alcAllDevicesList;
static ALCchar *alcCaptureDeviceList;
/* Sizes only include the first ending null character, not the second */
static size_t alcAllDevicesListSize;
static size_t alcCaptureDeviceListSize;
/* Default is always the first in the list */
static ALCchar *alcDefaultAllDevicesSpecifier;
static ALCchar *alcCaptureDefaultDeviceSpecifier;
/* 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_SOFT_buffer_samples AL_SOFT_buffer_sub_data "
"AL_SOFTX_deferred_updates AL_SOFT_direct_channels AL_SOFT_loop_points";
static volatile ALCenum LastNullDeviceError = ALC_NO_ERROR;
/* Thread-local current context */
static pthread_key_t LocalContext;
/* Process-wide current context */
static ALCcontext *volatile GlobalContext = NULL;
/* Mixing thread piority level */
ALint RTPrioLevel;
FILE *LogFile;
#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;
/* Default effect that applies to sources that don't have an effect on send 0 */
static ALeffect DefaultEffect;
/************************************************
* ALC information
************************************************/
static const ALCchar alcNoDeviceExtList[] =
"ALC_ENUMERATE_ALL_EXT ALC_ENUMERATION_EXT ALC_EXT_CAPTURE "
"ALC_EXT_thread_local_context ALC_SOFT_loopback";
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_SOFT_loopback";
static const ALCint alcMajorVersion = 1;
static const ALCint alcMinorVersion = 1;
static const ALCint alcEFXMajorVersion = 1;
static const ALCint alcEFXMinorVersion = 0;
/************************************************
* Device lists
************************************************/
static ALCdevice *volatile DeviceList = NULL;
static CRITICAL_SECTION ListLock;
static void LockLists(void)
{
EnterCriticalSection(&ListLock);
}
static void UnlockLists(void)
{
LeaveCriticalSection(&ListLock);
}
/************************************************
* Library initialization
************************************************/
#if defined(_WIN32)
static void alc_init(void);
static void alc_deinit(void);
static void alc_deinit_safe(void);
UIntMap TlsDestructor;
#ifndef AL_LIBTYPE_STATIC
BOOL APIENTRY DllMain(HINSTANCE hModule,DWORD ul_reason_for_call,LPVOID lpReserved)
{
ALsizei i;
// Perform actions based on the reason for calling.
switch(ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
/* Pin the DLL so we won't get unloaded until the process terminates */
GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_PIN | GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS,
(WCHAR*)hModule, &hModule);
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 ReleaseThreadCtx(void *ptr);
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 *= 0.5f;
str = getenv("__ALSOFT_REVERSE_Z");
if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
ZScale *= -1.0f;
pthread_key_create(&LocalContext, ReleaseThreadCtx);
InitializeCriticalSection(&ListLock);
ThunkInit();
}
static void alc_initconfig(void)
{
const char *devs, *str;
ALuint capfilter;
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();
capfilter = 0;
#ifdef HAVE_SSE
capfilter |= CPU_CAP_SSE;
#endif
#ifdef HAVE_NEON
capfilter |= CPU_CAP_NEON;
#endif
if(ConfigValueStr(NULL, "disable-cpu-exts", &str))
{
if(strcasecmp(str, "all") == 0)
capfilter = 0;
else
{
size_t len;
const char *next = str;
i = 0;
do {
str = next;
next = strchr(str, ',');
while(isspace(str[0]))
str++;
if(!str[0] || str[0] == ',')
continue;
len = (next ? ((size_t)(next-str)) : strlen(str));
if(strncasecmp(str, "sse", len) == 0)
capfilter &= ~CPU_CAP_SSE;
else if(strncasecmp(str, "neon", len) == 0)
capfilter &= ~CPU_CAP_NEON;
else
WARN("Invalid CPU extension \"%s\"\n", str);
} while(next++);
}
}
FillCPUCaps(capfilter);
#ifdef _WIN32
RTPrioLevel = 1;
#else
RTPrioLevel = 0;
#endif
ConfigValueInt(NULL, "rt-prio", &RTPrioLevel);
if(ConfigValueStr(NULL, "resampler", &str))
{
if(strcasecmp(str, "point") == 0 || strcasecmp(str, "none") == 0)
DefaultResampler = PointResampler;
else if(strcasecmp(str, "linear") == 0)
DefaultResampler = LinearResampler;
else if(strcasecmp(str, "cubic") == 0)
DefaultResampler = CubicResampler;
else
{
char *end;
n = strtol(str, &end, 0);
if(*end == '\0' && (n == PointResampler || n == LinearResampler || n == CubicResampler))
DefaultResampler = n;
else
WARN("Invalid resampler: %s\n", str);
}
}
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;
TrapALError = GetConfigValueBool(NULL, "trap-al-error", TrapALError);
str = getenv("ALSOFT_TRAP_ALC_ERROR");
if(str && (strcasecmp(str, "true") == 0 || strtol(str, NULL, 0) == 1))
TrapALCError = ALC_TRUE;
TrapALCError = GetConfigValueBool(NULL, "trap-alc-error", TrapALCError);
}
if(ConfigValueFloat("reverb", "boost", &valf))
ReverbBoost *= powf(10.0f, valf / 20.0f);
EmulateEAXReverb = GetConfigValueBool("reverb", "emulate-eax", AL_FALSE);
if(((devs=getenv("ALSOFT_DRIVERS")) && devs[0]) ||
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++);
}
InitEffect(&DefaultEffect);
str = getenv("ALSOFT_DEFAULT_REVERB");
if((str && str[0]) || ConfigValueStr(NULL, "default-reverb", &str))
LoadReverbPreset(str, &DefaultEffect);
}
#define DO_INITCONFIG() pthread_once(&alc_config_once, alc_initconfig)
/************************************************
* Library deinitialization
************************************************/
static void alc_cleanup(void)
{
ALCdevice *dev;
free(alcAllDevicesList); alcAllDevicesList = NULL;
alcAllDevicesListSize = 0;
free(alcCaptureDeviceList); alcCaptureDeviceList = NULL;
alcCaptureDeviceListSize = 0;
free(alcDefaultAllDevicesSpecifier);
alcDefaultAllDevicesSpecifier = NULL;
free(alcCaptureDefaultDeviceSpecifier);
alcCaptureDefaultDeviceSpecifier = NULL;
if((dev=ExchangePtr((XchgPtr*)&DeviceList, NULL)) != NULL)
{
ALCuint num = 0;
do {
num++;
} while((dev=dev->next) != NULL);
ERR("%u device%s not closed\n", num, (num>1)?"s":"");
}
}
static void alc_deinit_safe(void)
{
alc_cleanup();
FreeHrtfs();
FreeALConfig();
ThunkExit();
DeleteCriticalSection(&ListLock);
pthread_key_delete(LocalContext);
if(LogFile != stderr)
fclose(LogFile);
LogFile = NULL;
}
static void alc_deinit(void)
{
int i;
alc_cleanup();
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();
}
/************************************************
* Device enumeration
************************************************/
static void ProbeList(ALCchar **list, size_t *listsize, enum DevProbe type)
{
DO_INITCONFIG();
LockLists();
free(*list);
*list = NULL;
*listsize = 0;
if(type == ALL_DEVICE_PROBE && PlaybackBackend.Probe)
PlaybackBackend.Probe(type);
else if(type == CAPTURE_DEVICE_PROBE && CaptureBackend.Probe)
CaptureBackend.Probe(type);
UnlockLists();
}
static void ProbeAllDevicesList(void)
{ ProbeList(&alcAllDevicesList, &alcAllDevicesListSize, 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(AllDevices)
DECL_APPEND_LIST_FUNC(CaptureDevice)
#undef DECL_APPEND_LIST_FUNC
/************************************************
* Device format information
************************************************/
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 DevFmtInt: return "Signed Int";
case DevFmtUInt: return "Unsigned Int";
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 DevFmtInt: return sizeof(ALint);
case DevFmtUInt: return sizeof(ALuint);
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 < COUNTOF(list);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_SOFT:
case ALC_UNSIGNED_BYTE_SOFT:
case ALC_SHORT_SOFT:
case ALC_UNSIGNED_SHORT_SOFT:
case ALC_INT_SOFT:
case ALC_UNSIGNED_INT_SOFT:
case ALC_FLOAT_SOFT:
return ALC_TRUE;
}
return ALC_FALSE;
}
static ALCboolean IsValidALCChannels(ALCenum channels)
{
switch(channels)
{
case ALC_MONO_SOFT:
case ALC_STEREO_SOFT:
case ALC_QUAD_SOFT:
case ALC_5POINT1_SOFT:
case ALC_6POINT1_SOFT:
case ALC_7POINT1_SOFT:
return ALC_TRUE;
}
return ALC_FALSE;
}
/************************************************
* Miscellaneous ALC helpers
************************************************/
void ALCdevice_LockDefault(ALCdevice *device)
{
EnterCriticalSection(&device->Mutex);
}
void ALCdevice_UnlockDefault(ALCdevice *device)
{
LeaveCriticalSection(&device->Mutex);
}
ALint64 ALCdevice_GetLatencyDefault(ALCdevice *device)
{
(void)device;
return 0;
}
/* SetDefaultWFXChannelOrder
*
* Sets the default channel order used by WaveFormatEx.
*/
void SetDefaultWFXChannelOrder(ALCdevice *device)
{
switch(device->FmtChans)
{
case DevFmtMono: device->DevChannels[0] = FrontCenter; break;
case DevFmtStereo: device->DevChannels[0] = FrontLeft;
device->DevChannels[1] = FrontRight; break;
case DevFmtQuad: device->DevChannels[0] = FrontLeft;
device->DevChannels[1] = FrontRight;
device->DevChannels[2] = BackLeft;
device->DevChannels[3] = BackRight; break;
case DevFmtX51: device->DevChannels[0] = FrontLeft;
device->DevChannels[1] = FrontRight;
device->DevChannels[2] = FrontCenter;
device->DevChannels[3] = LFE;
device->DevChannels[4] = BackLeft;
device->DevChannels[5] = BackRight; break;
case DevFmtX51Side: device->DevChannels[0] = FrontLeft;
device->DevChannels[1] = FrontRight;
device->DevChannels[2] = FrontCenter;
device->DevChannels[3] = LFE;
device->DevChannels[4] = SideLeft;
device->DevChannels[5] = SideRight; break;
case DevFmtX61: device->DevChannels[0] = FrontLeft;
device->DevChannels[1] = FrontRight;
device->DevChannels[2] = FrontCenter;
device->DevChannels[3] = LFE;
device->DevChannels[4] = BackCenter;
device->DevChannels[5] = SideLeft;
device->DevChannels[6] = SideRight; break;
case DevFmtX71: device->DevChannels[0] = FrontLeft;
device->DevChannels[1] = FrontRight;
device->DevChannels[2] = FrontCenter;
device->DevChannels[3] = LFE;
device->DevChannels[4] = BackLeft;
device->DevChannels[5] = BackRight;
device->DevChannels[6] = SideLeft;
device->DevChannels[7] = SideRight; break;
}
}
/* SetDefaultChannelOrder
*
* Sets the default channel order used by most non-WaveFormatEx-based APIs.
*/
void SetDefaultChannelOrder(ALCdevice *device)
{
switch(device->FmtChans)
{
case DevFmtX51: device->DevChannels[0] = FrontLeft;
device->DevChannels[1] = FrontRight;
device->DevChannels[2] = BackLeft;
device->DevChannels[3] = BackRight;
device->DevChannels[4] = FrontCenter;
device->DevChannels[5] = LFE;
return;
case DevFmtX71: device->DevChannels[0] = FrontLeft;
device->DevChannels[1] = FrontRight;
device->DevChannels[2] = BackLeft;
device->DevChannels[3] = BackRight;
device->DevChannels[4] = FrontCenter;
device->DevChannels[5] = LFE;
device->DevChannels[6] = SideLeft;
device->DevChannels[7] = SideRight;
return;
/* Same as WFX order */
case DevFmtMono:
case DevFmtStereo:
case DevFmtQuad:
case DevFmtX51Side:
case DevFmtX61:
break;
}
SetDefaultWFXChannelOrder(device);
}
/* alcSetError
*
* Stores the latest ALC device 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
LastNullDeviceError = errorCode;
}
/* UpdateDeviceParams
*
* Updates device parameters according to the attribute list (caller is
* responsible for holding the list lock).
*/
static ALCenum UpdateDeviceParams(ALCdevice *device, const ALCint *attrList)
{
ALCcontext *context;
enum DevFmtChannels oldChans;
enum DevFmtType oldType;
ALCuint oldFreq;
FPUCtl oldMode;
ALuint i;
// Check for attributes
if(device->Type == Loopback)
{
enum {
GotFreq = 1<<0,
GotChans = 1<<1,
GotType = 1<<2,
GotAll = GotFreq|GotChans|GotType
};
ALCuint freq, numMono, numStereo, numSends;
enum DevFmtChannels schans;
enum DevFmtType stype;
ALCuint attrIdx = 0;
ALCint gotFmt = 0;
if(!attrList)
{
WARN("Missing attributes for loopback device\n");
return ALC_INVALID_VALUE;
}
numMono = device->NumMonoSources;
numStereo = device->NumStereoSources;
numSends = device->NumAuxSends;
schans = device->FmtChans;
stype = device->FmtType;
freq = device->Frequency;
while(attrList[attrIdx])
{
if(attrList[attrIdx] == ALC_FORMAT_CHANNELS_SOFT)
{
ALCint val = attrList[attrIdx + 1];
if(!IsValidALCChannels(val) || !ChannelsFromDevFmt(val))
return ALC_INVALID_VALUE;
schans = val;
gotFmt |= GotChans;
}
if(attrList[attrIdx] == ALC_FORMAT_TYPE_SOFT)
{
ALCint val = attrList[attrIdx + 1];
if(!IsValidALCType(val) || !BytesFromDevFmt(val))
return ALC_INVALID_VALUE;
stype = val;
gotFmt |= GotType;
}
if(attrList[attrIdx] == ALC_FREQUENCY)
{
freq = attrList[attrIdx + 1];
if(freq < MIN_OUTPUT_RATE)
return ALC_INVALID_VALUE;
gotFmt |= GotFreq;
}
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(gotFmt != GotAll)
{
WARN("Missing format for loopback device\n");
return ALC_INVALID_VALUE;
}
ConfigValueUInt(NULL, "sends", &numSends);
numSends = minu(MAX_SENDS, numSends);
if((device->Flags&DEVICE_RUNNING))
ALCdevice_StopPlayback(device);
device->Flags &= ~DEVICE_RUNNING;
device->Frequency = freq;
device->FmtChans = schans;
device->FmtType = stype;
device->NumMonoSources = numMono;
device->NumStereoSources = numStereo;
device->NumAuxSends = numSends;
}
else if(attrList && attrList[0])
{
ALCuint freq, numMono, numStereo, numSends;
ALCuint attrIdx = 0;
/* 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;
numMono = device->NumMonoSources;
numStereo = device->NumStereoSources;
numSends = device->NumAuxSends;
while(attrList[attrIdx])
{
if(attrList[attrIdx] == ALC_FREQUENCY)
{
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;
}
ConfigValueUInt(NULL, "frequency", &freq);
freq = maxu(freq, MIN_OUTPUT_RATE);
ConfigValueUInt(NULL, "sends", &numSends);
numSends = minu(MAX_SENDS, numSends);
device->UpdateSize = (ALuint64)device->UpdateSize * freq /
device->Frequency;
/* SSE does best with the update size being a multiple of 4 */
if((CPUCapFlags&CPU_CAP_SSE))
device->UpdateSize = (device->UpdateSize+3)&~3;
device->Frequency = freq;
device->NumMonoSources = numMono;
device->NumStereoSources = numStereo;
device->NumAuxSends = numSends;
}
if((device->Flags&DEVICE_RUNNING))
return ALC_NO_ERROR;
oldFreq = device->Frequency;
oldChans = device->FmtChans;
oldType = device->FmtType;
TRACE("Pre-reset: %s%s, %s%s, %uhz%s, %u update size x%d\n",
DevFmtChannelsString(device->FmtChans),
(device->Flags&DEVICE_CHANNELS_REQUEST)?" (requested)":"",
DevFmtTypeString(device->FmtType),
(device->Flags&DEVICE_SAMPLE_TYPE_REQUEST)?" (requested)":"",
device->Frequency,
(device->Flags&DEVICE_FREQUENCY_REQUEST)?" (requested)":"",
device->UpdateSize, device->NumUpdates);
if(ALCdevice_ResetPlayback(device) == ALC_FALSE)
return ALC_INVALID_DEVICE;
if(device->FmtChans != oldChans && (device->Flags&DEVICE_CHANNELS_REQUEST))
{
ERR("Failed to set %s, got %s instead\n", DevFmtChannelsString(oldChans),
DevFmtChannelsString(device->FmtChans));
device->Flags &= ~DEVICE_CHANNELS_REQUEST;
}
if(device->FmtType != oldType && (device->Flags&DEVICE_SAMPLE_TYPE_REQUEST))
{
ERR("Failed to set %s, got %s instead\n", DevFmtTypeString(oldType),
DevFmtTypeString(device->FmtType));
device->Flags &= ~DEVICE_SAMPLE_TYPE_REQUEST;
}
if(device->Frequency != oldFreq && (device->Flags&DEVICE_FREQUENCY_REQUEST))
{
ERR("Failed to set %uhz, got %uhz instead\n", oldFreq, device->Frequency);
device->Flags &= ~DEVICE_FREQUENCY_REQUEST;
}
TRACE("Post-reset: %s, %s, %uhz, %u update size x%d\n",
DevFmtChannelsString(device->FmtChans),
DevFmtTypeString(device->FmtType), device->Frequency,
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->Type != Loopback && 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_WIDE_STEREO;
if(device->Type != Loopback && !device->Hrtf && GetConfigValueBool(NULL, "wide-stereo", AL_FALSE))
device->Flags |= DEVICE_WIDE_STEREO;
if(!device->Hrtf && (device->UpdateSize&3))
{
if((CPUCapFlags&CPU_CAP_SSE))
WARN("SSE performs best with multiple of 4 update sizes (%u)\n", device->UpdateSize);
}
SetMixerFPUMode(&oldMode);
ALCdevice_Lock(device);
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);
ALCdevice_Unlock(device);
RestoreFPUMode(&oldMode);
return ALC_INVALID_DEVICE;
}
slot->NeedsUpdate = AL_FALSE;
ALeffectState_Update(slot->EffectState, device, 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].Gain = 1.0f;
source->Send[s].GainHF = 1.0f;
s++;
}
source->NeedsUpdate = AL_FALSE;
ALsource_Update(source, context);
}
UnlockUIntMapRead(&context->SourceMap);
context = context->next;
}
if(device->DefaultSlot)
{
ALeffectslot *slot = device->DefaultSlot;
if(ALeffectState_DeviceUpdate(slot->EffectState, device) == AL_FALSE)
{
ALCdevice_Unlock(device);
RestoreFPUMode(&oldMode);
return ALC_INVALID_DEVICE;
}
slot->NeedsUpdate = AL_FALSE;
ALeffectState_Update(slot->EffectState, device, slot);
}
ALCdevice_Unlock(device);
RestoreFPUMode(&oldMode);
if(ALCdevice_StartPlayback(device) == ALC_FALSE)
return ALC_INVALID_DEVICE;
device->Flags |= DEVICE_RUNNING;
return ALC_NO_ERROR;
}
/* 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->Type != Capture)
ALCdevice_ClosePlayback(device);
else
ALCdevice_CloseCapture(device);
if(device->DefaultSlot)
{
ALeffectState_Destroy(device->DefaultSlot->EffectState);
device->DefaultSlot->EffectState = NULL;
}
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->DeviceName);
device->DeviceName = NULL;
DeleteCriticalSection(&device->Mutex);
al_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;
}
/* InitContext
*
* Initializes context fields
*/
static ALvoid InitContext(ALCcontext *Context)
{
ALint i, j;
//Initialise listener
Context->Listener->Gain = 1.0f;
Context->Listener->MetersPerUnit = 1.0f;
Context->Listener->Position[0] = 0.0f;
Context->Listener->Position[1] = 0.0f;
Context->Listener->Position[2] = 0.0f;
Context->Listener->Velocity[0] = 0.0f;
Context->Listener->Velocity[1] = 0.0f;
Context->Listener->Velocity[2] = 0.0f;
Context->Listener->Forward[0] = 0.0f;
Context->Listener->Forward[1] = 0.0f;
Context->Listener->Forward[2] = -1.0f;
Context->Listener->Up[0] = 0.0f;
Context->Listener->Up[1] = 1.0f;
Context->Listener->Up[2] = 0.0f;
for(i = 0;i < 4;i++)
{
for(j = 0;j < 4;j++)
Context->Listener->Params.Matrix[i][j] = ((i==j) ? 1.0f : 0.0f);
}
for(i = 0;i < 3;i++)
Context->Listener->Params.Velocity[i] = 0.0f;
//Validate Context
Context->LastError = AL_NO_ERROR;
Context->UpdateSources = AL_FALSE;
Context->ActiveSourceCount = 0;
InitUIntMap(&Context->SourceMap, Context->Device->MaxNoOfSources);
InitUIntMap(&Context->EffectSlotMap, Context->Device->AuxiliaryEffectSlotMax);
//Set globals
Context->DistanceModel = DefaultDistanceModel;
Context->SourceDistanceModel = AL_FALSE;
Context->DopplerFactor = 1.0f;
Context->DopplerVelocity = 1.0f;
Context->SpeedOfSound = SPEEDOFSOUNDMETRESPERSEC;
Context->DeferUpdates = AL_FALSE;
Context->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((XchgPtr*)&GlobalContext, context, NULL))
ALCcontext_DecRef(context);
ALCdevice_Lock(device);
tmp_ctx = &device->ContextList;
while(*tmp_ctx)
{
if(CompExchangePtr((XchgPtr*)tmp_ctx, context, context->next))
break;
tmp_ctx = &(*tmp_ctx)->next;
}
ALCdevice_Unlock(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;
}
/* GetContextRef
*
* Returns the currently active context for this thread, 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;
}
/************************************************
* Standard ALC functions
************************************************/
/* alcGetError
*
* Return last ALC generated error code for the given device
*/
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(&LastNullDeviceError, 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 *Device, 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:
value = alcDefaultName;
break;
case ALC_ALL_DEVICES_SPECIFIER:
if(VerifyDevice(Device))
{
value = Device->DeviceName;
ALCdevice_DecRef(Device);
}
else
{
ProbeAllDevicesList();
value = alcAllDevicesList;
}
break;
case ALC_CAPTURE_DEVICE_SPECIFIER:
if(VerifyDevice(Device))
{
value = Device->DeviceName;
ALCdevice_DecRef(Device);
}
else
{
ProbeCaptureDeviceList();
value = alcCaptureDeviceList;
}
break;
/* Default devices are always first in the list */
case ALC_DEFAULT_DEVICE_SPECIFIER:
value = alcDefaultName;
break;
case ALC_DEFAULT_ALL_DEVICES_SPECIFIER:
if(!alcAllDevicesList)
ProbeAllDevicesList();
Device = VerifyDevice(Device);
free(alcDefaultAllDevicesSpecifier);
alcDefaultAllDevicesSpecifier = strdup(alcAllDevicesList ?
alcAllDevicesList : "");
if(!alcDefaultAllDevicesSpecifier)
alcSetError(Device, ALC_OUT_OF_MEMORY);
value = alcDefaultAllDevicesSpecifier;
if(Device) ALCdevice_DecRef(Device);
break;
case ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER:
if(!alcCaptureDeviceList)
ProbeCaptureDeviceList();
Device = VerifyDevice(Device);
free(alcCaptureDefaultDeviceSpecifier);
alcCaptureDefaultDeviceSpecifier = strdup(alcCaptureDeviceList ?
alcCaptureDeviceList : "");
if(!alcCaptureDefaultDeviceSpecifier)
alcSetError(Device, ALC_OUT_OF_MEMORY);
value = alcCaptureDefaultDeviceSpecifier;
if(Device) ALCdevice_DecRef(Device);
break;
case ALC_EXTENSIONS:
if(!VerifyDevice(Device))
value = alcNoDeviceExtList;
else
{
value = alcExtensionList;
ALCdevice_DecRef(Device);
}
break;
default:
Device = VerifyDevice(Device);
alcSetError(Device, ALC_INVALID_ENUM);
if(Device) ALCdevice_DecRef(Device);
break;
}
return value;
}
/* alcGetIntegerv
*
* Returns information about the device and the version of OpenAL
*/
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->Type == Capture)
{
switch(param)
{
case ALC_CAPTURE_SAMPLES:
ALCdevice_Lock(device);
*data = ALCdevice_AvailableSamples(device);
ALCdevice_Unlock(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->Type != Loopback)
{
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->Type == Loopback)
alcSetError(device, ALC_INVALID_DEVICE);
else
*data = device->Frequency / device->UpdateSize;
break;
case ALC_SYNC:
if(device->Type == Loopback)
alcSetError(device, ALC_INVALID_DEVICE);
else
*data = ALC_FALSE;
break;
case ALC_FORMAT_CHANNELS_SOFT:
if(device->Type != Loopback)
alcSetError(device, ALC_INVALID_DEVICE);
else
*data = device->FmtChans;
break;
case ALC_FORMAT_TYPE_SOFT:
if(device->Type != Loopback)
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;
if(!funcName)
{
device = VerifyDevice(device);
alcSetError(device, ALC_INVALID_VALUE);
if(device) ALCdevice_DecRef(device);
}
else
{
ALsizei i = 0;
while(alcFunctions[i].funcName && strcmp(alcFunctions[i].funcName, funcName) != 0)
i++;
ptr = alcFunctions[i].address;
}
return ptr;
}
/* alcGetEnumValue
*
* Get the value for a particular ALC enumeration name
*/
ALC_API ALCenum ALC_APIENTRY alcGetEnumValue(ALCdevice *device, const ALCchar *enumName)
{
ALCenum val = 0;
if(!enumName)
{
device = VerifyDevice(device);
alcSetError(device, ALC_INVALID_VALUE);
if(device) ALCdevice_DecRef(device);
}
else
{
ALsizei i = 0;
while(enumeration[i].enumName && strcmp(enumeration[i].enumName, enumName) != 0)
i++;
val = enumeration[i].value;
}
return val;
}
/* alcCreateContext
*
* Create and attach a context to the given device.
*/
ALC_API ALCcontext* ALC_APIENTRY alcCreateContext(ALCdevice *device, const ALCint *attrList)
{
ALCcontext *ALContext;
ALCenum err;
LockLists();
if(!(device=VerifyDevice(device)) || device->Type == Capture || !device->Connected)
{
UnlockLists();
alcSetError(device, ALC_INVALID_DEVICE);
if(device) ALCdevice_DecRef(device);
return NULL;
}
device->LastError = ALC_NO_ERROR;
if((err=UpdateDeviceParams(device, attrList)) != ALC_NO_ERROR)
{
UnlockLists();
alcSetError(device, err);
if(err == ALC_INVALID_DEVICE)
aluHandleDisconnect(device);
ALCdevice_DecRef(device);
return NULL;
}
ALContext = calloc(1, sizeof(ALCcontext)+15+sizeof(ALlistener));
if(ALContext)
{
ALContext->ref = 1;
ALContext->Listener = (ALlistener*)(((ALintptrEXT)(ALContext+1)+15)&~15);
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);
do {
ALContext->next = device->ContextList;
} while(!CompExchangePtr((XchgPtr*)&device->ContextList, ALContext->next, ALContext));
UnlockLists();
ALCdevice_DecRef(device);
TRACE("Created context %p\n", ALContext);
return ALContext;
}
/* alcDestroyContext
*
* Remove a context from its device
*/
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 on the calling thread
*/
ALC_API ALCcontext* ALC_APIENTRY alcGetCurrentContext(void)
{
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 process-wide context, and removes the
* thread-local context for the calling thread.
*/
ALC_API ALCboolean ALC_APIENTRY alcMakeContextCurrent(ALCcontext *context)
{
/* context must be valid or NULL */
if(context && !(context=VerifyContext(context)))
{
alcSetError(NULL, ALC_INVALID_CONTEXT);
return ALC_FALSE;
}
/* context's reference count is already incremented */
context = ExchangePtr((XchgPtr*)&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 valid 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;
}
/* alcOpenDevice
*
* Opens the named device.
*/
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, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0))
deviceName = NULL;
device = al_calloc(16, sizeof(ALCdevice)+15+sizeof(ALeffectslot));
if(!device)
{
alcSetError(NULL, ALC_OUT_OF_MEMORY);
return NULL;
}
//Validate device
device->Funcs = &PlaybackBackend.Funcs;
device->ref = 1;
device->Connected = ALC_TRUE;
device->Type = Playback;
InitializeCriticalSection(&device->Mutex);
device->LastError = ALC_NO_ERROR;
device->Flags = 0;
device->Bs2b = NULL;
device->Bs2bLevel = 0;
device->DeviceName = 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->FmtChans = DevFmtChannelsDefault;
device->FmtType = DevFmtTypeDefault;
device->Frequency = DEFAULT_OUTPUT_RATE;
device->NumUpdates = 4;
device->UpdateSize = 1024;
if(ConfigValueStr(NULL, "channels", &fmt))
{
static const struct {
const char name[16];
enum DevFmtChannels chans;
} chanlist[] = {
{ "mono", DevFmtMono },
{ "stereo", DevFmtStereo },
{ "quad", DevFmtQuad },
{ "surround51", DevFmtX51 },
{ "surround61", DevFmtX61 },
{ "surround71", DevFmtX71 },
};
size_t i;
for(i = 0;i < COUNTOF(chanlist);i++)
{
if(strcasecmp(chanlist[i].name, fmt) == 0)
{
device->FmtChans = chanlist[i].chans;
device->Flags |= DEVICE_CHANNELS_REQUEST;
break;
}
}
if(i == COUNTOF(chanlist))
ERR("Unsupported channels: %s\n", fmt);
}
if(ConfigValueStr(NULL, "sample-type", &fmt))
{
static const struct {
const char name[16];
enum DevFmtType type;
} typelist[] = {
{ "int8", DevFmtByte },
{ "uint8", DevFmtUByte },
{ "int16", DevFmtShort },
{ "uint16", DevFmtUShort },
{ "int32", DevFmtInt },
{ "uint32", DevFmtUInt },
{ "float32", DevFmtFloat },
};
size_t i;
for(i = 0;i < COUNTOF(typelist);i++)
{
if(strcasecmp(typelist[i].name, fmt) == 0)
{
device->FmtType = typelist[i].type;
device->Flags |= DEVICE_SAMPLE_TYPE_REQUEST;
break;
}
}
if(i == COUNTOF(typelist))
ERR("Unsupported sample-type: %s\n", fmt);
}
#define DEVICE_FORMAT_REQUEST (DEVICE_CHANNELS_REQUEST|DEVICE_SAMPLE_TYPE_REQUEST)
if((device->Flags&DEVICE_FORMAT_REQUEST) != DEVICE_FORMAT_REQUEST &&
ConfigValueStr(NULL, "format", &fmt))
{
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;
ERR("Option 'format' is deprecated, please use 'channels' and 'sample-type'\n");
for(i = 0;i < COUNTOF(formats);i++)
{
if(strcasecmp(fmt, formats[i].name) == 0)
{
if(!(device->Flags&DEVICE_CHANNELS_REQUEST))
device->FmtChans = formats[i].channels;
if(!(device->Flags&DEVICE_SAMPLE_TYPE_REQUEST))
device->FmtType = formats[i].type;
device->Flags |= DEVICE_FORMAT_REQUEST;
break;
}
}
if(i == COUNTOF(formats))
ERR("Unsupported format: %s\n", fmt);
}
#undef DEVICE_FORMAT_REQUEST
if(ConfigValueUInt(NULL, "frequency", &device->Frequency))
{
device->Flags |= DEVICE_FREQUENCY_REQUEST;
if(device->Frequency < MIN_OUTPUT_RATE)
ERR("%uhz request clamped to %uhz minimum\n", device->Frequency, MIN_OUTPUT_RATE);
device->Frequency = maxu(device->Frequency, MIN_OUTPUT_RATE);
}
ConfigValueUInt(NULL, "periods", &device->NumUpdates);
device->NumUpdates = clampu(device->NumUpdates, 2, 16);
ConfigValueUInt(NULL, "period_size", &device->UpdateSize);
device->UpdateSize = clampu(device->UpdateSize, 64, 8192);
if((CPUCapFlags&CPU_CAP_SSE))
device->UpdateSize = (device->UpdateSize+3)&~3;
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
if((err=ALCdevice_OpenPlayback(device, deviceName)) != ALC_NO_ERROR)
{
DeleteCriticalSection(&device->Mutex);
al_free(device);
alcSetError(NULL, err);
return NULL;
}
if(DefaultEffect.type != AL_EFFECT_NULL)
{
device->DefaultSlot = (ALeffectslot*)(((ALintptrEXT)(device+1)+15)&~15);
if(InitEffectSlot(device->DefaultSlot) != AL_NO_ERROR)
{
device->DefaultSlot = NULL;
ERR("Failed to initialize the default effect slot\n");
}
else if(InitializeEffect(device, device->DefaultSlot, &DefaultEffect) != AL_NO_ERROR)
{
ALeffectState_Destroy(device->DefaultSlot->EffectState);
device->DefaultSlot = NULL;
ERR("Failed to initialize the default effect\n");
}
}
do {
device->next = DeviceList;
} while(!CompExchangePtr((XchgPtr*)&DeviceList, device->next, device));
TRACE("Created device %p, \"%s\"\n", device, device->DeviceName);
return device;
}
/* alcCloseDevice
*
* Closes the given device.
*/
ALC_API ALCboolean ALC_APIENTRY alcCloseDevice(ALCdevice *Device)
{
ALCdevice *volatile*list;
ALCcontext *ctx;
LockLists();
list = &DeviceList;
while(*list && *list != Device)
list = &(*list)->next;
if(!*list || (*list)->Type == Capture)
{
alcSetError(*list, ALC_INVALID_DEVICE);
UnlockLists();
return ALC_FALSE;
}
*list = (*list)->next;
UnlockLists();
while((ctx=Device->ContextList) != NULL)
{
WARN("Releasing context %p\n", ctx);
ReleaseContext(ctx, Device);
}
if((Device->Flags&DEVICE_RUNNING))
ALCdevice_StopPlayback(Device);
Device->Flags &= ~DEVICE_RUNNING;
ALCdevice_DecRef(Device);
return ALC_TRUE;
}
/************************************************
* ALC capture functions
************************************************/
ALC_API ALCdevice* ALC_APIENTRY alcCaptureOpenDevice(const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei samples)
{
ALCdevice *device = NULL;
ALCenum err;
DO_INITCONFIG();
if(!CaptureBackend.name)
{
alcSetError(NULL, ALC_INVALID_VALUE);
return NULL;
}
if(samples <= 0)
{
alcSetError(NULL, ALC_INVALID_VALUE);
return NULL;
}
if(deviceName && (!deviceName[0] || strcasecmp(deviceName, alcDefaultName) == 0 || strcasecmp(deviceName, "openal-soft") == 0))
deviceName = NULL;
device = al_calloc(16, 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->Type = Capture;
InitializeCriticalSection(&device->Mutex);
InitUIntMap(&device->BufferMap, ~0);
InitUIntMap(&device->EffectMap, ~0);
InitUIntMap(&device->FilterMap, ~0);
device->DeviceName = NULL;
device->Flags |= DEVICE_FREQUENCY_REQUEST;
device->Frequency = frequency;
device->Flags |= DEVICE_CHANNELS_REQUEST | DEVICE_SAMPLE_TYPE_REQUEST;
if(DecomposeDevFormat(format, &device->FmtChans, &device->FmtType) == AL_FALSE)
{
DeleteCriticalSection(&device->Mutex);
al_free(device);
alcSetError(NULL, ALC_INVALID_ENUM);
return NULL;
}
device->UpdateSize = samples;
device->NumUpdates = 1;
if((err=ALCdevice_OpenCapture(device, deviceName)) != ALC_NO_ERROR)
{
DeleteCriticalSection(&device->Mutex);
al_free(device);
alcSetError(NULL, err);
return NULL;
}
do {
device->next = DeviceList;
} while(!CompExchangePtr((XchgPtr*)&DeviceList, device->next, device));
TRACE("Created device %p\n", device);
return device;
}
ALC_API ALCboolean ALC_APIENTRY alcCaptureCloseDevice(ALCdevice *Device)
{
ALCdevice *volatile*list;
LockLists();
list = &DeviceList;
while(*list && *list != Device)
list = &(*list)->next;
if(!*list || (*list)->Type != Capture)
{
alcSetError(*list, ALC_INVALID_DEVICE);
UnlockLists();
return ALC_FALSE;
}
*list = (*list)->next;
UnlockLists();
ALCdevice_DecRef(Device);
return ALC_TRUE;
}
ALC_API void ALC_APIENTRY alcCaptureStart(ALCdevice *device)
{
if(!(device=VerifyDevice(device)) || device->Type != Capture)
alcSetError(device, ALC_INVALID_DEVICE);
else
{
ALCdevice_Lock(device);
if(device->Connected)
{
if(!(device->Flags&DEVICE_RUNNING))
ALCdevice_StartCapture(device);
device->Flags |= DEVICE_RUNNING;
}
ALCdevice_Unlock(device);
}
if(device) ALCdevice_DecRef(device);
}
ALC_API void ALC_APIENTRY alcCaptureStop(ALCdevice *device)
{
if(!(device=VerifyDevice(device)) || device->Type != Capture)
alcSetError(device, ALC_INVALID_DEVICE);
else
{
ALCdevice_Lock(device);
if((device->Flags&DEVICE_RUNNING))
ALCdevice_StopCapture(device);
device->Flags &= ~DEVICE_RUNNING;
ALCdevice_Unlock(device);
}
if(device) ALCdevice_DecRef(device);
}
ALC_API void ALC_APIENTRY alcCaptureSamples(ALCdevice *device, ALCvoid *buffer, ALCsizei samples)
{
if(!(device=VerifyDevice(device)) && device->Type != Capture)
alcSetError(device, ALC_INVALID_DEVICE);
else
{
ALCenum err = ALC_INVALID_VALUE;
ALCdevice_Lock(device);
if(samples >= 0 && ALCdevice_AvailableSamples(device) >= (ALCuint)samples)
err = ALCdevice_CaptureSamples(device, buffer, samples);
ALCdevice_Unlock(device);
if(err != ALC_NO_ERROR)
alcSetError(device, err);
}
if(device) ALCdevice_DecRef(device);
}
/************************************************
* ALC loopback functions
************************************************/
/* alcLoopbackOpenDeviceSOFT
*
* Open a loopback device, for manual rendering.
*/
ALC_API ALCdevice* ALC_APIENTRY alcLoopbackOpenDeviceSOFT(const ALCchar *deviceName)
{
ALCdevice *device;
DO_INITCONFIG();
/* Make sure the device name, if specified, is us. */
if(deviceName && strcmp(deviceName, alcDefaultName) != 0)
{
alcSetError(NULL, ALC_INVALID_VALUE);
return NULL;
}
device = al_calloc(16, 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->Type = Loopback;
InitializeCriticalSection(&device->Mutex);
device->LastError = ALC_NO_ERROR;
device->Flags = 0;
device->Bs2b = NULL;
device->Bs2bLevel = 0;
device->DeviceName = 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 = DEFAULT_OUTPUT_RATE;
device->FmtChans = DevFmtChannelsDefault;
device->FmtType = DevFmtTypeDefault;
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;
device->NumStereoSources = 1;
device->NumMonoSources = device->MaxNoOfSources - device->NumStereoSources;
// Open the "backend"
ALCdevice_OpenPlayback(device, "Loopback");
do {
device->next = DeviceList;
} while(!CompExchangePtr((XchgPtr*)&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->Type != Loopback)
alcSetError(device, ALC_INVALID_DEVICE);
else if(freq <= 0)
alcSetError(device, ALC_INVALID_VALUE);
else
{
if(IsValidALCType(type) && BytesFromDevFmt(type) > 0 &&
IsValidALCChannels(channels) && ChannelsFromDevFmt(channels) > 0 &&
freq >= MIN_OUTPUT_RATE)
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->Type != Loopback)
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);
}
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