public static extern int waveInOpen(
out IntPtr phwi,
uint uDeviceID,
ref Win32.WaveFormatEx pwfx,
IntPtr dwCallback,
IntPtr dwCallbackInstance,
int fdwOpen);
public WaveOut(int deviceId, int samplesPerSec, int bitsPerSample, int channels)
{
Win32.WaveFormatEx pwfx = new Win32.WaveFormatEx(samplesPerSec, bitsPerSample, channels);
this.eventHandler = new MessageThread();
IntPtr dwCallback = new IntPtr(this.eventHandler.Win32ThreadID);
int num = Win32.waveOutOpen(out this.deviceHandle, (uint)deviceId, ref pwfx, dwCallback, IntPtr.Zero, 131072);
if ((uint)num > 0U)
{
this.eventHandler.Dispose();
throw new Exception(string.Format("The device could not be opened ({0})", num));
}
this.eventHandler.MessageHandlers[957] = m =>
{
WaveBuffer waveBuffer = WaveBuffer.FromWaveHeader(Win32.WaveHeader.FromIntPtr(m.LParam));
Win32.waveOutUnprepareHeader(this.deviceHandle, waveBuffer.pHeader, Win32.WaveHeader.SizeOfWaveHeader);
Interlocked.Add(ref this.enqueuedBufferSize, -waveBuffer.Data.Length);
waveBuffer.Dispose();
if (this.OnDone == null)
{
return;
}
this.OnDone();
};
}