public override bool IsPlaying()
{
AlNative.alGetSourcei(_source, AlNative.AL_SOURCE_STATE, out int state);
bool playing = state == AlNative.AL_PLAYING;
return(playing);
}
protected override void PlatformDispose()
{
mutex.WaitOne();
if (usingResource == 1)
{
if (_context != IntPtr.Zero)
{
AlNative.alcSuspendContext(_context);
checkAlcError();
}
AlNative.alcMakeContextCurrent(IntPtr.Zero);
checkAlcError();
if (_context != IntPtr.Zero)
{
AlNative.alcDestroyContext(_context);
checkAlcError();
_context = IntPtr.Zero;
AlNative.alcCloseDevice(_device);
checkAlcError();
_device = IntPtr.Zero;
}
usingResource = 0;
}
mutex.ReleaseMutex();
}
public override void SetSourcePosition(AudioSource source, Vector3 position)
{
ALSource alSource = (ALSource)source;
AlNative.alSource3f(alSource._source, AlNative.AL_POSITION, position.X, position.Y, position.Z);
ALEngine.checkAlError();
}
public ALBuffer()
{
var buffers = new uint[1];
AlNative.alGenBuffers(1, buffers);
ALEngine.checkAlError();
Buffer = buffers[0];
}
public ALSource()
{
var sources = new uint[1];
AlNative.alGenSources(1, sources);
ALEngine.checkAlError();
_source = sources[0];
}
public override void QueueBuffer(AudioBuffer buffer)
{
RemoveProcessed();
var alBuffer = (ALBuffer)buffer;
AlNative.alSourceQueueBuffers(_source, 1, new uint[] { alBuffer.Buffer });
ALEngine.checkAlError();
}
private void checkAlcError()
{
int error = AlNative.alcGetError(_device);
if (error != AlNative.ALC_NO_ERROR)
{
throw new SharpAudioException("OpenAL Error: " + error);
}
}
internal static void checkAlError()
{
int error = AlNative.alGetError();
if (error != AlNative.AL_NO_ERROR)
{
throw new SharpAudioException("OpenAL Error: " + error);
}
}
protected override void PlatformDispose()
{
AlNative.alcMakeContextCurrent((IntPtr)0);
checkAlcError();
AlNative.alcDestroyContext(_context);
checkAlcError();
AlNative.alcCloseDevice(_device);
checkAlcError();
}
public ALEngine(AudioEngineOptions options)
{
_device = AlNative.alcOpenDevice(null);
checkAlcError();
_context = AlNative.alcCreateContext(_device, null);
checkAlcError();
AlNative.alcMakeContextCurrent(_context);
checkAlcError();
_floatSupport = AlNative.alIsExtensionPresent("AL_EXT_FLOAT32");
}
private void checkAlcError()
{
int error = AlNative.alcGetError(_device);
if (error != AlNative.ALC_NO_ERROR)
{
string formatErrMsg = string.Format("OpenALc Error: {0} - {1}", Marshal.PtrToStringAuto(AlNative.alcGetString(_device, error)), AlNative.alcGetCurrentContext().ToString());
throw new SharpAudioException(formatErrMsg);
}
}
internal static void checkAlError()
{
int error = AlNative.alGetError();
if (error != AlNative.AL_NO_ERROR)
{
string formatErrMsg = string.Format("OpenAL Error: {0} - {1}", Marshal.PtrToStringAuto(AlNative.alGetString(error)), AlNative.alcGetCurrentContext().ToString());
throw new SharpAudioException(formatErrMsg);
}
}
public ALCapture(AudioCaptureOptions options)
{
mutex.WaitOne();
usingResource++;
if (usingResource == 1)
{
// opens the default device.
_device = AlNative.alcCaptureOpenDevice(null, (uint)options.SampleRate, AlNative.AL_FORMAT_MONO16, 128);
checkAlcError();
}
mutex.ReleaseMutex();
}
private void RemoveProcessed()
{
//before querying new data check if sth was processed already:
AlNative.alGetSourcei(_source, AlNative.AL_BUFFERS_PROCESSED, out int processed);
ALEngine.checkAlError();
while (processed > 0)
{
var bufs = new uint[] { 1 };
AlNative.alSourceUnqueueBuffers(_source, 1, bufs);
processed--;
}
}
public override unsafe void BufferData(IntPtr ptr, int sizeInBytes, AudioFormat format)
{
int fmt = (format.Channels == 2) ? AlNative.AL_FORMAT_STEREO8 : AlNative.AL_FORMAT_MONO8;
if (format.BitsPerSample == 16)
{
fmt++;
}
AlNative.alBufferData(Buffer, fmt, ptr, sizeInBytes, format.SampleRate);
ALEngine.checkAlError();
_format = format;
}
public override unsafe void BufferData <T>(T[] buffer, AudioFormat format)
{
int fmt = (format.Channels == 2) ? AlNative.AL_FORMAT_STEREO8 : AlNative.AL_FORMAT_MONO8;
int sizeInBytes = sizeof(T) * buffer.Length;
if (format.BitsPerSample == 16)
{
fmt++;
}
var handle = GCHandle.Alloc(buffer);
IntPtr ptr = Marshal.UnsafeAddrOfPinnedArrayElement(buffer, 0);
AlNative.alBufferData(_buffer, fmt, ptr, sizeInBytes, format.SampleRate);
ALEngine.checkAlError();
handle.Free();
_format = format;
}
public ALEngine(AudioEngineOptions options)
{
mutex.WaitOne();
usingResource++;
if (usingResource == 1)
{
int[] argument = new int[] { AlNative.ALC_FREQUENCY, options.SampleRate };
// opens the default device.
_device = AlNative.alcOpenDevice(null);
checkAlcError();
_context = AlNative.alcCreateContext(_device, argument);
checkAlcError();
//
AlNative.alcMakeContextCurrent(_context);
checkAlcError();
_floatSupport = AlNative.alIsExtensionPresent("AL_EXT_FLOAT32");
checkAlError();
}
mutex.ReleaseMutex();
}
public override void Dispose()
{
AlNative.alDeleteBuffers(1, new uint[] { Buffer });
}
public override void Dispose()
{
AlNative.alDeleteBuffers(1, new uint[] { Buffer });
ALEngine.checkAlError();
}
public override void Stop()
{
AlNative.alSourceStop(_source);
ALEngine.checkAlError();
}
protected override void PlatformDispose()
{
AlNative.alcDestroyContext(_context);
AlNative.alcCloseDevice(_device);
}
public override void Play()
{
AlNative.alSourcePlay(_source);
ALEngine.checkAlError();
}
public override void SetListenerPosition(Vector3 position)
{
AlNative.alListener3f(AlNative.AL_POSITION, position.X, position.Y, position.Z);
ALEngine.checkAlError();
}
public override void Dispose()
{
AlNative.alDeleteSources(1, new uint[] { _source });
ALEngine.checkAlError();
}
public override void SetListenerOrientation(Vector3 top, Vector3 front)
{
float[] listenerOri = new float[] { front.X, front.Y, front.Z, top.X, top.Y, top.Z };
AlNative.alListenerfv(AlNative.AL_ORIENTATION, listenerOri);
ALEngine.checkAlError();
}
