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 static OpenALAudioAdapter TryCreate(PlatformBase _)
{
var newCtx = new OpenALAudioAdapter();
newCtx.AudioDevice = Alc.OpenDevice(null);
if (newCtx.AudioDevice == IntPtr.Zero)
{
Engine.Log.Error("Couldn't find an OpenAL device.", MessageSource.OpenAL);
return(null);
}
var attr = new int[0];
newCtx.AudioContext = Alc.CreateContext(newCtx.AudioDevice, attr);
if (newCtx.AudioContext == IntPtr.Zero)
{
Engine.Log.Error("Couldn't create OpenAL context.", MessageSource.OpenAL);
return(null);
}
bool success = Alc.MakeContextCurrent(newCtx.AudioContext);
if (!success)
{
Engine.Log.Error("Couldn't make OpenAL context current.", MessageSource.OpenAL);
return(null);
}
return(newCtx);
}