public OpenALAudioLayer(string name, OpenALAudioAdapter parent) : base(name)
{
if (_openALFormatId == 0)
{
_openALFormatId = _openALAudioFormat.BitsPerSample switch
{
32 => Al.FORMAT_STEREO32F,
16 => _openALAudioFormat.Channels == 2 ? Al.FORMAT_STEREO16 : Al.FORMAT_MONO16,
8 => _openALAudioFormat.Channels == 2 ? Al.FORMAT_STEREO8 : Al.FORMAT_MONO8,
_ => _openALFormatId
}
}
;
if (_frameRequestSize == 0)
{
_frameRequestSize = _openALAudioFormat.GetFrameCount(BackendBufferExpectedAhead / 1000f);
_frameRequestSize /= BUFFER_COUNT;
}
_parent = parent;
Al.GenSource(out _source);
_buffers = new uint[BUFFER_COUNT];
_bufferBusy = new bool[BUFFER_COUNT];
for (var i = 0; i < _buffers.Length; i++)
{
Al.GenBuffer(out _buffers[i]);
}
_uploadBuffer = new byte[_frameRequestSize * _openALAudioFormat.FrameSize];
}
public SoundSourcePool(int sourceCount = SoundManager.SOURCE_COUNT)
{
int alError = Al.NoError;
ALSources = new uint[sourceCount];
for (int i = 0; i < sourceCount; i++)
{
Al.GenSource(out ALSources[i]);
alError = Al.GetError();
if (alError != Al.NoError)
{
throw new Exception("Error generating alSource[" + i.ToString() + "]: " + Al.GetErrorString(alError));
}
if (!Al.IsSource(ALSources[i]))
{
throw new Exception("Generated alSource[" + i.ToString() + "] is invalid!");
}
Al.SourceStop(ALSources[i]);
alError = Al.GetError();
if (alError != Al.NoError)
{
throw new Exception("Error stopping newly generated alSource[" + i.ToString() + "]: " + Al.GetErrorString(alError));
}
Al.Sourcef(ALSources[i], Al.MinGain, 0.0f);
alError = Al.GetError();
if (alError != Al.NoError)
{
throw new Exception("Error setting min gain: " + Al.GetErrorString(alError));
}
Al.Sourcef(ALSources[i], Al.MaxGain, 1.0f);
alError = Al.GetError();
if (alError != Al.NoError)
{
throw new Exception("Error setting max gain: " + Al.GetErrorString(alError));
}
Al.Sourcef(ALSources[i], Al.RolloffFactor, 1.0f);
alError = Al.GetError();
if (alError != Al.NoError)
{
throw new Exception("Error setting rolloff factor: " + Al.GetErrorString(alError));
}
}
}
public AudioSource(Sound sound)
{
Sound = sound;
Al.GenSource(out source);
Al.Sourcei(source, Al.Buffer, (int)sound.Buffer);
}
public AudioSource()
{
Al.GenSource(out source);
}