void Audio::init()
{
#ifdef WIN32
EFXEAXREVERBPROPERTIES efxReverb;
int attrib[] = {ALC_MAX_AUXILIARY_SENDS, 4};
int sends;
ALenum al_err;
#endif
debugf("Using default audio device: %s\n", alcGetString(NULL, ALC_DEFAULT_DEVICE_SPECIFIER));
device = alcOpenDevice(NULL);
if (device == NULL)
{
debugf("No sound device/driver has been found.\n");
return;
}
#ifdef WIN32
context = alcCreateContext(device, attrib);
#else
context = alcCreateContext(device, NULL);
#endif
if (context == NULL)
{
debugf("alcCreateContext failed.\n");
}
if ( alcMakeContextCurrent(context) == ALC_FALSE )
{
ALCenum error = alcGetError(device);
switch (error)
{
case ALC_NO_ERROR:
debugf("alcMakeContextCurrent failed: No error.\n");
break;
case ALC_INVALID_DEVICE:
debugf("alcMakeContextCurrent failed: Invalid device.\n");
break;
case ALC_INVALID_CONTEXT:
debugf("alcMakeContextCurrent failed: Invalid context.\n");
break;
case ALC_INVALID_ENUM:
debugf("alcMakeContextCurrent failed: Invalid enum.\n");
break;
case ALC_INVALID_VALUE:
debugf("alcMakeContextCurrent failed: Invalid value.\n");
break;
case ALC_OUT_OF_MEMORY:
debugf("alcMakeContextCurrent failed: Out of memory.\n");
break;
}
return;
}
#ifdef WIN32
alcGetIntegerv(device, ALC_MAX_AUXILIARY_SENDS, 1, &sends);
debugf("%d sends per audio source\n", sends);
#endif
alListenerf(AL_REFERENCE_DISTANCE, 100.0f);
//gain = (distance / AL_REFERENCE_DISTANCE) ^ (-AL_ROLLOFF_FACTOR
alDistanceModel(AL_EXPONENT_DISTANCE);
alListenerf(AL_ROLLOFF_FACTOR, 0.000001f);
// alListenerf(AL_MAX_DISTANCE, 10000.0f);
alDopplerFactor(1.0f);
// alDopplerVelocity(8.0f);
// alSpeedOfSound(343.3f * UNITS_TO_METERS);
#ifdef WIN32
alListenerf(AL_METERS_PER_UNIT, 0.3f);
ALFWIsEFXSupported();
alGenAuxiliaryEffectSlots(1, &slot);
al_err = alGetError();
if (al_err != AL_NO_ERROR)
{
debugf("Unable to generate slot: %s\n", GetALErrorString(al_err));
return;
}
alGenEffects(1, &effect);
al_err = alGetError();
if (al_err != AL_NO_ERROR)
{
debugf("Unable to generate effect: %s\n", GetALErrorString(al_err));
return;
}
alEffecti(effect, AL_EFFECT_TYPE, AL_EFFECT_EAXREVERB);
al_err = alGetError();
if (al_err != AL_NO_ERROR)
{
debugf("Unable to set effect: %s\n", GetALErrorString(al_err));
return;
}
ConvertReverbParameters(&eaxBathroom, &efxReverb);
SetEFXEAXReverbProperties(&efxReverb, effect);
// alEffectf(effect, AL_REVERB_GAIN, 1.0f);
// alEffectf(effect, AL_REVERB_DECAY_TIME, 20.0f);
// alEffectf(effect, AL_REVERB_DENSITY, 0.25f);
alGenFilters(1, &filter);
al_err = alGetError();
if (al_err != AL_NO_ERROR)
{
debugf("Unable to generate filter: %s\n", GetALErrorString(al_err));
return;
}
alFilteri(filter, AL_FILTER_TYPE, AL_FILTER_LOWPASS);
alFilterf(filter, AL_LOWPASS_GAIN, 0.5f);
alFilterf(filter, AL_LOWPASS_GAINHF, 0.5f);
#endif
}
void COALExtProvider::CopyPreset(sSoundReverbProperties& input, EFXEAXREVERBPROPERTIES& output)
{
EAXREVERBPROPERTIES props;
memcpy(&props, &input, sizeof(EAXREVERBPROPERTIES));
ConvertReverbParameters(&props, &output);
}
