private void ResetChannelVolumes()
{
if (InvokeRequired)
{
BeginInvoke(new DisposeDelegate(ResetChannelVolumes));
return;
}
mVoice.SetChannelVolumes(2, GetChannelVolumes((float)mPan));
}
public void Play( Form on )
{
var screens = Screen.AllScreens;
var screens_left = screens.Min( screen => screen.Bounds.Left );
var screens_right = screens.Max( screen => screen.Bounds.Right );
var screens_width = screens_right-screens_left;
var bestScreen = screens.OrderByDescending( screen => {
var area = screen.Bounds;
area.Intersect( on.Bounds );
return area.Width*area.Height;
}).First();
var balances = new[]{1.5f,1.5f};
if ( screens.Length==3 && DisplayBalances.ContainsKey(bestScreen.DeviceName) ) balances = DisplayBalances[bestScreen.DeviceName];
var path = Registry.CurrentUser.OpenSubKey(@"AppEvents\Schemes\Apps\.Default\"+Name+@"\.Current").GetValue(null) as string;
var stream = new WaveStream(path);
var buffer = new AudioBuffer() { AudioBytes=(int)stream.Length, AudioData=stream, Flags=BufferFlags.EndOfStream };
var voice = new SourceVoice( XAudio2, stream.Format );
voice.SubmitSourceBuffer( buffer );
voice.SetChannelVolumes( balances.Length, balances );
voice.BufferEnd += (sender,ctx) => {
try {
on.BeginInvoke(new Action(()=>{
voice.Dispose();
buffer.Dispose();
stream.Dispose();
}));
} catch ( InvalidOperationException ) {
// herp derp on must be disposed/gone
}
};
voice.Start();
}
private void PlaySoundAsync()
{
try
{
int numberOfSamples = _bufferSize / _waveFormat.BlockAlign;
while (true)
{
if (_playerState != PlayerState.Stopped)
{
while (_playerState != PlayerState.Stopped)
{
if (_playEvent.Wait(_waitPrecision))
{
break;
}
}
for (int i = 0; i < numberOfSamples; i++)
{
float value = (float)(Math.Sin(2 * Math.PI * _valueRate * i / _waveFormat.SampleRate) * _valueAmp);
_dataStream.Write(value);
_dataStream.Write(value);
}
_dataStream.Position = 0;
while (_sourceVoice.State.BuffersQueued == _audioBuffersRing.Length)
{
_bufferEndEvent.WaitOne(_waitPrecision);
}
if (_bufferSize > _memBuffers[_nextBuffer].Size)
{
if (_memBuffers[_nextBuffer].Pointer != IntPtr.Zero)
{
Utilities.FreeMemory(_memBuffers[_nextBuffer].Pointer);
}
_memBuffers[_nextBuffer].Pointer = Utilities.AllocateMemory(_bufferSize);
_memBuffers[_nextBuffer].Size = _bufferSize;
}
// Copy the memory from MediaFoundation AudioDecoder to the buffer that is going to be played.
Utilities.CopyMemory(_memBuffers[_nextBuffer].Pointer, _dataStream.DataPointer, _bufferSize);
// Set the pointer to the data.
_audioBuffersRing[_nextBuffer].AudioDataPointer = _memBuffers[_nextBuffer].Pointer;
_audioBuffersRing[_nextBuffer].AudioBytes = _bufferSize;
if (!_isConvolutionOn)
{
var angle = _horizontalAngle > 90 ? MAX_HORIZONATL_ANGLE_ABS - _horizontalAngle : _horizontalAngle;
float rightChannelVolume = (float)(angle + MAX_HORIZONATL_ANGLE_ABS / 2) /
(HORIZONTAL_ANGLE_RANGE / 2);
float leftChannelVolume = 1 - rightChannelVolume;
_sourceVoice.SetChannelVolumes(2, new[] { rightChannelVolume, leftChannelVolume });
}
_sourceVoice.SubmitSourceBuffer(_audioBuffersRing[_nextBuffer], null);
// Go to next entry in the ringg audio buffer
_nextBuffer = ++_nextBuffer % _audioBuffersRing.Length;
}
}
}
finally
{
Close();
}
}
