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;
}
// 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;
}
void CEFX::CommitEffects()
{
if (!supported)
return;
//! commit reverb properties
for (std::map<ALuint, ALfloat>::iterator it = sfxProperties->properties_f.begin(); it != sfxProperties->properties_f.end(); ++it)
alEffectf(sfxReverb, it->first, it->second);
for (std::map<ALuint, ALint>::iterator it = sfxProperties->properties_i.begin(); it != sfxProperties->properties_i.end(); ++it)
alEffecti(sfxReverb, it->first, it->second);
for (std::map<ALuint, float3>::iterator it = sfxProperties->properties_v.begin(); it != sfxProperties->properties_v.end(); ++it)
alEffectfv(sfxReverb, it->first, (ALfloat*)&it->second[0]);
alEffectf(sfxReverb, AL_EAXREVERB_ROOM_ROLLOFF_FACTOR, sfxProperties->properties_f[AL_EAXREVERB_ROOM_ROLLOFF_FACTOR] * heightRolloffModifier);
alAuxiliaryEffectSloti(sfxSlot, AL_EFFECTSLOT_EFFECT, sfxReverb);
for (std::map<ALuint, ALfloat>::iterator it=sfxProperties->filter_properties_f.begin(); it != sfxProperties->filter_properties_f.end(); ++it)
alFilterf(sfxFilter, it->first, it->second);
updates++;
}
ALvoid AL_APIENTRY alFilterfv(ALuint filter, ALenum param, ALfloat *pflValues)
{
ALCcontext *Context;
Context = alcGetCurrentContext();
SuspendContext(Context);
if (filter && alIsFilter(filter))
{
switch(param)
{
default:
alFilterf(filter, param, pflValues[0]);
break;
}
}
else
alSetError(AL_INVALID_NAME);
ProcessContext(Context);
}
AL_API ALvoid AL_APIENTRY alFilterfv(ALuint filter, ALenum param, ALfloat *pflValues)
{
ALCcontext *Context;
ALCdevice *Device;
Context = GetContextSuspended();
if(!Context) return;
Device = Context->Device;
if(LookupFilter(Device->FilterMap, filter) != NULL)
{
switch(param)
{
default:
alFilterf(filter, param, pflValues[0]);
break;
}
}
else
alSetError(Context, AL_INVALID_NAME);
ProcessContext(Context);
}
static ALvoid CDECL wine_alFilterf(ALuint fid, ALenum param, ALfloat value)
{
alFilterf(fid, param, value);
}
AL_API ALvoid AL_APIENTRY alFilterfv(ALuint filter, ALenum param, ALfloat *pflValues)
{
/* There are currently no multi-value filter parameters */
alFilterf(filter, param, pflValues[0]);
}
