public OpenALDevice()
{
string envDevice = Environment.GetEnvironmentVariable("FNA_AUDIO_DEVICE_NAME");
if (String.IsNullOrEmpty(envDevice))
{
/* Be sure ALC won't explode if the variable doesn't exist.
* But, fail if the device name is wrong. The user needs to know
* if their environment variable was incorrect.
* -flibit
*/
envDevice = String.Empty;
}
alDevice = ALC10.alcOpenDevice(envDevice);
if (CheckALCError() || alDevice == IntPtr.Zero)
{
throw new InvalidOperationException("Could not open audio device!");
}
int[] attribute = new int[0];
alContext = ALC10.alcCreateContext(alDevice, attribute);
if (CheckALCError() || alContext == IntPtr.Zero)
{
Dispose();
throw new InvalidOperationException("Could not create OpenAL context");
}
ALC10.alcMakeContextCurrent(alContext);
if (CheckALCError())
{
Dispose();
throw new InvalidOperationException("Could not make OpenAL context current");
}
float[] ori = new float[]
{
0.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f
};
AL10.alListenerfv(AL10.AL_ORIENTATION, ori);
AL10.alListener3f(AL10.AL_POSITION, 0.0f, 0.0f, 0.0f);
AL10.alListener3f(AL10.AL_VELOCITY, 0.0f, 0.0f, 0.0f);
AL10.alListenerf(AL10.AL_GAIN, 1.0f);
// We do NOT use automatic attenuation! XNA does not do this!
AL10.alDistanceModel(AL10.AL_NONE);
EFX.alGenFilters(1, out INTERNAL_alFilter);
}
private OpenALDevice()
{
alDevice = ALC10.alcOpenDevice(string.Empty);
if (CheckALCError("Could not open AL device") || alDevice == IntPtr.Zero)
{
throw new Exception("Could not open audio device!");
}
int[] attribute = new int[0];
alContext = ALC10.alcCreateContext(alDevice, attribute);
if (CheckALCError("Could not create OpenAL context") || alContext == IntPtr.Zero)
{
Dispose();
throw new Exception("Could not create OpenAL context");
}
ALC10.alcMakeContextCurrent(alContext);
if (CheckALCError("Could not make OpenAL context current"))
{
Dispose();
throw new Exception("Could not make OpenAL context current");
}
float[] ori = new float[]
{
0.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f
};
AL10.alListenerfv(AL10.AL_ORIENTATION, ori);
AL10.alListener3f(AL10.AL_POSITION, 0.0f, 0.0f, 0.0f);
AL10.alListener3f(AL10.AL_VELOCITY, 0.0f, 0.0f, 0.0f);
AL10.alListenerf(AL10.AL_GAIN, 1.0f);
// We do NOT use automatic attenuation! XNA does not do this!
AL10.alDistanceModel(AL10.AL_NONE);
instancePool = new List <SoundEffectInstance>();
dynamicInstancePool = new List <DynamicSoundEffectInstance>();
}