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AuroraOpenALSoft/Alc/ALc.c

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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_QSA
{ "qsa", alc_qsa_init, alc_qsa_deinit, alc_qsa_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),
DECL(AL_EFFECT_CHORUS),
DECL(AL_EFFECT_DISTORTION),
DECL(AL_EFFECT_ECHO),
DECL(AL_EFFECT_FLANGER),
#if 0
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),
#endif
DECL(AL_EFFECT_EQUALIZER),
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_CHORUS_WAVEFORM),
DECL(AL_CHORUS_PHASE),
DECL(AL_CHORUS_RATE),
DECL(AL_CHORUS_DEPTH),
DECL(AL_CHORUS_FEEDBACK),
DECL(AL_CHORUS_DELAY),
DECL(AL_FLANGER_WAVEFORM),
DECL(AL_FLANGER_PHASE),
DECL(AL_FLANGER_RATE),
DECL(AL_FLANGER_DEPTH),
DECL(AL_FLANGER_FEEDBACK),
DECL(AL_FLANGER_DELAY),
DECL(AL_EQUALIZER_LOW_GAIN),
DECL(AL_EQUALIZER_LOW_CUTOFF),
DECL(AL_EQUALIZER_MID1_GAIN),
DECL(AL_EQUALIZER_MID1_CENTER),
DECL(AL_EQUALIZER_MID1_WIDTH),
DECL(AL_EQUALIZER_MID2_GAIN),
DECL(AL_EQUALIZER_MID2_CENTER),
DECL(AL_EQUALIZER_MID2_WIDTH),
DECL(AL_EQUALIZER_HIGH_GAIN),
DECL(AL_EQUALIZER_HIGH_CUTOFF),
DECL(AL_DISTORTION_EDGE),
DECL(AL_DISTORTION_GAIN),
DECL(AL_DISTORTION_LOWPASS_CUTOFF),
DECL(AL_DISTORTION_EQCENTER),
DECL(AL_DISTORTION_EQBANDWIDTH),
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 "
"AL_SOFT_source_latency";
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);
}
{
char buf[1024] = "";
int len = snprintf(buf, sizeof(buf), "%s", BackendList[0].name);
for(i = 1;BackendList[i].name;i++)
len += snprintf(buf+len, sizeof(buf)-len, ", %s", BackendList[i].name);
TRACE("Supported backends: %s\n", buf);
}
ReadALConfig();
capfilter = 0;
#ifdef HAVE_SSE
capfilter |= CPU_CAP_SSE | CPU_CAP_SSE2;
#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, "sse2", len) == 0)
capfilter &= ~CPU_CAP_SSE2;
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++);
}
InitEffectFactoryMap();
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":"");
}
DeinitEffectFactoryMap();
}
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)
{
ALuint i;
for(i = 0;i < MaxChannels;i++)
device->ChannelOffsets[i] = INVALID_OFFSET;
switch(device->FmtChans)
{
case DevFmtMono: device->ChannelOffsets[FrontCenter] = 0;
break;
case DevFmtStereo: device->ChannelOffsets[FrontLeft] = 0;
device->ChannelOffsets[FrontRight] = 1;
break;
case DevFmtQuad: device->ChannelOffsets[FrontLeft] = 0;
device->ChannelOffsets[FrontRight] = 1;
device->ChannelOffsets[BackLeft] = 2;
device->ChannelOffsets[BackRight] = 3;
break;
case DevFmtX51: device->ChannelOffsets[FrontLeft] = 0;
device->ChannelOffsets[FrontRight] = 1;
device->ChannelOffsets[FrontCenter] = 2;
device->ChannelOffsets[LFE] = 3;
device->ChannelOffsets[BackLeft] = 4;
device->ChannelOffsets[BackRight] = 5;
break;
case DevFmtX51Side: device->ChannelOffsets[FrontLeft] = 0;
device->ChannelOffsets[FrontRight] = 1;
device->ChannelOffsets[FrontCenter] = 2;
device->ChannelOffsets[LFE] = 3;
device->ChannelOffsets[SideLeft] = 4;
device->ChannelOffsets[SideRight] = 5;
break;
case DevFmtX61: device->ChannelOffsets[FrontLeft] = 0;
device->ChannelOffsets[FrontRight] = 1;
device->ChannelOffsets[FrontCenter] = 2;
device->ChannelOffsets[LFE] = 3;
device->ChannelOffsets[BackCenter] = 4;
device->ChannelOffsets[SideLeft] = 5;
device->ChannelOffsets[SideRight] = 6;
break;
case DevFmtX71: device->ChannelOffsets[FrontLeft] = 0;
device->ChannelOffsets[FrontRight] = 1;
device->ChannelOffsets[FrontCenter] = 2;
device->ChannelOffsets[LFE] = 3;
device->ChannelOffsets[BackLeft] = 4;
device->ChannelOffsets[BackRight] = 5;
device->ChannelOffsets[SideLeft] = 6;
device->ChannelOffsets[SideRight] = 7;
break;
}
}
/* SetDefaultChannelOrder
*
* Sets the default channel order used by most non-WaveFormatEx-based APIs.
*/
void SetDefaultChannelOrder(ALCdevice *device)
{
ALuint i;
for(i = 0;i < MaxChannels;i++)
device->ChannelOffsets[i] = INVALID_OFFSET;
switch(device->FmtChans)
{
case DevFmtX51: device->ChannelOffsets[FrontLeft] = 0;
device->ChannelOffsets[FrontRight] = 1;
device->ChannelOffsets[BackLeft] = 2;
device->ChannelOffsets[BackRight] = 3;
device->ChannelOffsets[FrontCenter] = 4;
device->ChannelOffsets[LFE] = 5;
return;
case DevFmtX71: device->ChannelOffsets[FrontLeft] = 0;
device->ChannelOffsets[FrontRight] = 1;
device->ChannelOffsets[BackLeft] = 2;
device->ChannelOffsets[BackRight] = 3;
device->ChannelOffsets[FrontCenter] = 4;
device->ChannelOffsets[LFE] = 5;
device->ChannelOffsets[SideLeft] = 6;
device->ChannelOffsets[SideRight] = 7;
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, %s%uhz, %u update size x%d\n",
(device->Flags&DEVICE_CHANNELS_REQUEST)?"*":"",
DevFmtChannelsString(device->FmtChans),
(device->Flags&DEVICE_SAMPLE_TYPE_REQUEST)?"*":"",
DevFmtTypeString(device->FmtType),
(device->Flags&DEVICE_FREQUENCY_REQUEST)?"*":"",
device->Frequency,
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(VCALL(slot->EffectState,DeviceUpdate,(device)) == AL_FALSE)
{
UnlockUIntMapRead(&context->EffectSlotMap);
ALCdevice_Unlock(device);
RestoreFPUMode(&oldMode);
return ALC_INVALID_DEVICE;
}
slot->NeedsUpdate = AL_FALSE;
VCALL(slot->EffectState,Update,(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(VCALL(slot->EffectState,DeviceUpdate,(device)) == AL_FALSE)
{
ALCdevice_Unlock(device);
RestoreFPUMode(&oldMode);
return ALC_INVALID_DEVICE;
}
slot->NeedsUpdate = AL_FALSE;
VCALL(slot->EffectState,Update,(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 *state = device->DefaultSlot->EffectState;
device->DefaultSlot = NULL;
DELETE_OBJ(state);
}
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)
{
WARN("(%p) Deleting %d Source(s)\n", context, context->SourceMap.size);
ReleaseALSources(context);
}
ResetUIntMap(&context->SourceMap);
if(context->EffectSlotMap.size > 0)
{
WARN("(%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)
{
ALCdevice_Lock(device);
aluHandleDisconnect(device);
ALCdevice_Unlock(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 *state = device->DefaultSlot->EffectState;
device->DefaultSlot = NULL;
DELETE_OBJ(state);
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, \"%s\"\n", device, device->DeviceName);
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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