// Thread: Any. Must be locked: AudioMutex.
bool CreatePlaybackDevice() {
if (AudioDevice) return true;
AudioDevice = alcOpenDevice(nullptr);
if (!AudioDevice) {
LOG(("Audio Error: Could not create default playback device, enumerating.."));
EnumeratePlaybackDevices();
return false;
}
ALCint attributes[] = {
ALC_STEREO_SOURCES, 128,
ALC_FREQUENCY, Media::Player::kDefaultFrequency,
0
};
AudioContext = alcCreateContext(AudioDevice, attributes);
alcMakeContextCurrent(AudioContext);
if (ContextErrorHappened()) {
DestroyPlaybackDevice();
return false;
}
ALfloat v[] = { 0.f, 0.f, -1.f, 0.f, 1.f, 0.f };
alListener3f(AL_POSITION, 0.f, 0.f, 0.f);
alListener3f(AL_VELOCITY, 0.f, 0.f, 0.f);
alListenerfv(AL_ORIENTATION, v);
#ifndef TDESKTOP_DISABLE_OPENAL_EFFECTS
// playback speed related init
// generate an effect slot and an effect
alGenAuxiliaryEffectSlots(1, &_playbackSpeedData.uiEffectSlot);
alGenEffects(1, &_playbackSpeedData.uiEffect);
// initialize the pitch shifter effect
alEffecti(_playbackSpeedData.uiEffect, AL_EFFECT_TYPE, AL_EFFECT_PITCH_SHIFTER);
// 12 semitones = 1 octave
alEffecti(_playbackSpeedData.uiEffect, AL_PITCH_SHIFTER_COARSE_TUNE, kPlaybackSpeedTune);
// connect the effect with the effect slot
alAuxiliaryEffectSloti(_playbackSpeedData.uiEffectSlot, AL_EFFECTSLOT_EFFECT, _playbackSpeedData.uiEffect);
// initialize a filter to disable the direct (dry) path
alGenFilters(1, &_playbackSpeedData.uiFilter);
alFilteri(_playbackSpeedData.uiFilter, AL_FILTER_TYPE, AL_FILTER_LOWPASS);
// disable all frequencies
alFilterf(_playbackSpeedData.uiFilter, AL_LOWPASS_GAIN, 0.f);
// to use the modified playback speed:
// connect both the effect slot and filter with the stream source and set AL_PITCH
#endif // TDESKTOP_DISABLE_OPENAL_EFFECTS
alDistanceModel(AL_NONE);
return true;
}
//////////////////////////////////////////////////////////////////////////
// Ctor
SsChannelAL::SsChannelAL( SsCoreImplAL* Parent ):
ALSource_( NULL ),
ALFilter_( NULL ),
State_( ssCS_IDLE ),
Sample_( NULL ),
Parent_( Parent )
{
// Generate source.
alGenSources( 1, &ALSource_ );
alBreakOnError();
#if SS_AL_EFX_SUPPORTED
if( SsCore::pImpl< SsCoreImplAL >()->isEFXEnabled() )
{
// Generate filter (if supported)
alGenFilters( 1, &ALFilter_ );
alBreakOnError();
}
#endif
}
bool openal_init() {
dev=alcOpenDevice(NULL);
if(!dev)
return true;
ctx=alcCreateContext(dev,NULL);
if(!ctx)
return true;
if(!alcMakeContextCurrent(ctx))
return true;
sound_init_extensions();
/*
if(cvars["s_volume"]>100)
cvars["s_volume"]=100;
if(cvars["s_on"])
alListenerf(AL_GAIN,float(cvars["s_volume"])/100);
else
alListenerf(AL_GAIN,0.0f);
*/
alGenAuxiliaryEffectSlots(1,&uiEffectSlot);
alGenEffects(1,&uiEffect);
alEffecti(uiEffect,AL_EFFECT_TYPE,AL_EFFECT_REVERB);
alAuxiliaryEffectSloti(uiEffectSlot,AL_EFFECTSLOT_EFFECT,uiEffect);
alGenFilters(1,&uiFilter);
alFilteri(uiFilter,AL_FILTER_TYPE,AL_FILTER_LOWPASS);
alFilterf(uiFilter,AL_LOWPASS_GAIN,1.0f);
alFilterf(uiFilter,AL_LOWPASS_GAINHF,0.1f);
soundbuffers.push_back(new SoundBuffer("data/sfx/01.ogg"));
soundbuffers.push_back(new SoundBuffer("data/sfx/02.ogg"));
return false;
}
CEFX::CEFX(ALCdevice* device)
:enabled(false)
,supported(false)
,sfxProperties(NULL)
,sfxSlot(0)
,sfxReverb(0)
,sfxFilter(0)
,updates(0)
,maxSlots(0)
,maxSlotsPerSource(0)
{
SetAirAbsorptionFactor(configHandler->GetFloat("snd_airAbsorption"));
bool hasExtension = alcIsExtensionPresent(device, "ALC_EXT_EFX");
if(hasExtension && alGenEffects && alDeleteEffects)
supported = true;
//! set default preset
eaxPresets["default"] = eaxPresets[default_preset];
//! always allocate this
sfxProperties = new EAXSfxProps();
*sfxProperties = eaxPresets[default_preset];
if (!supported) {
if(!hasExtension)
LOG(" EFX Supported: no");
else
LOG(" EFX is supported but software does not seem to work properly");
return;
}
//! clear log
alGetError() ;
//! Check Available Effects
{
static const ALuint effects[] = {
AL_EFFECT_REVERB,
AL_EFFECT_EAXREVERB,
AL_EFFECT_CHORUS,
AL_EFFECT_DISTORTION,
AL_EFFECT_ECHO,
AL_EFFECT_FLANGER,
AL_EFFECT_FREQUENCY_SHIFTER,
AL_EFFECT_VOCAL_MORPHER,
AL_EFFECT_PITCH_SHIFTER,
AL_EFFECT_RING_MODULATOR,
AL_EFFECT_AUTOWAH,
AL_EFFECT_COMPRESSOR,
AL_EFFECT_EQUALIZER
};
ALuint alFx;
alGenEffects(1, &alFx);
if (alGetError() == AL_NO_ERROR) {
for(size_t i = 0; i < sizeof(effects); i++) {
const ALuint fx = effects[i];
alEffecti(alFx, AL_EFFECT_TYPE, fx);
effectsSupported[fx] = (alGetError() == AL_NO_ERROR);
}
}
alDeleteEffects(1, &alFx);
}
//! Check Available Filters
{
static const ALuint filters[] = {
AL_FILTER_LOWPASS,
AL_FILTER_HIGHPASS,
AL_FILTER_BANDPASS
};
ALuint alFilter;
alGenFilters(1, &alFilter);
if (alGetError() == AL_NO_ERROR) {
for(size_t i = 0; i < sizeof(filters); i++) {
const ALuint filter = filters[i];
alFilteri(alFilter, AL_FILTER_TYPE, filter);
filtersSupported[filter] = (alGetError() == AL_NO_ERROR);
}
}
alDeleteFilters(1, &alFilter);
}
//! Check Max Available EffectSlots
{
int n;
ALuint alFXSlots[128];
for (n = 0; n < 128; n++) {
alGenAuxiliaryEffectSlots(1, &alFXSlots[n]);
if (alGetError() != AL_NO_ERROR)
break;
}
maxSlots = n;
alDeleteAuxiliaryEffectSlots(n, alFXSlots);
}
//! Check Max AUX FX SLOTS Per Sound Source
alcGetIntegerv(device, ALC_MAX_AUXILIARY_SENDS, 1, (ALCint*)&maxSlotsPerSource);
//! Check requirements
if (!effectsSupported[AL_EFFECT_EAXREVERB]
|| !filtersSupported[AL_FILTER_LOWPASS]
|| (maxSlots<1)
|| (maxSlotsPerSource<1)
) {
LOG_L(L_WARNING, " EFX Supported: no");
supported = false;
return;
}
//! Create our global sfx enviroment
alGenAuxiliaryEffectSlots(1, &sfxSlot);
alGenEffects(1, &sfxReverb);
alEffecti(sfxReverb, AL_EFFECT_TYPE, AL_EFFECT_EAXREVERB);
alGenFilters(1, &sfxFilter);
alFilteri(sfxFilter, AL_FILTER_TYPE, AL_FILTER_LOWPASS);
if (!alIsAuxiliaryEffectSlot(sfxSlot) || !alIsEffect(sfxReverb) || !alIsFilter(sfxFilter)) {
LOG_L(L_ERROR, " Initializing EFX failed!");
alDeleteFilters(1, &sfxFilter);
alDeleteEffects(1, &sfxReverb);
alDeleteAuxiliaryEffectSlots(1, &sfxSlot);
supported = false;
return;
}
//! Load defaults
CommitEffects();
if (!CheckError(" EFX")) {
LOG_L(L_ERROR, " Initializing EFX failed!");
alAuxiliaryEffectSloti(sfxSlot, AL_EFFECTSLOT_EFFECT, AL_EFFECT_NULL);
alDeleteFilters(1, &sfxFilter);
alDeleteEffects(1, &sfxReverb);
alDeleteAuxiliaryEffectSlots(1, &sfxSlot);
supported = false;
return;
}
//! User may disable it (performance reasons?)
enabled = configHandler->GetBool("UseEFX");
LOG(" EFX Enabled: %s", (enabled ? "yes" : "no"));
if (enabled) {
LOG_L(L_DEBUG, " EFX MaxSlots: %i", maxSlots);
LOG_L(L_DEBUG, " EFX MaxSlotsPerSource: %i", maxSlotsPerSource);
}
configHandler->NotifyOnChange(this);
}
/* OpenAL EFX extension functions */
static ALvoid CDECL wine_alGenFilters(ALsizei n, ALuint* filters)
{
alGenFilters(n, filters);
}
AudioFilter::AudioFilter()
{
#if !defined(FEA_NO_EFX)
alGenFilters(1, &mFilterId);
#endif
}
