/// <summary>creates a new wavebuffer</summary>
/// <param name="hWaveOut">WaveOut device to write to</param>
/// <param name="bufferSize">Buffer size in bytes</param>
/// <param name="bufferFillStream">Stream to provide more data</param>
/// <param name="waveOutLock">Lock to protect WaveOut API's from being called on >1 thread</param>
public AudioBuffer(
IntPtr hWaveOut,
int bufferSize,
IWaveProvider bufferFillStream,
object waveOutLock)
{
BufferSize = bufferSize;
_buffer = new byte[bufferSize];
_hBuffer = GCHandle.Alloc((object)_buffer, GCHandleType.Pinned);
_hWaveOut = hWaveOut;
_waveStream = bufferFillStream;
_waveOutLock = waveOutLock;
_header = new WaveHeader();
_hHeader = GCHandle.Alloc((object)_header, GCHandleType.Pinned);
_header.dataBuffer = _hBuffer.AddrOfPinnedObject();
_header.bufferLength = bufferSize;
_header.loops = 1;
_hThis = GCHandle.Alloc((object)this);
_header.userData = (IntPtr)_hThis;
lock (waveOutLock)
MmException.Try(AudioInterop.waveOutPrepareHeader(hWaveOut, _header, Marshal.SizeOf((object)_header)), "waveOutPrepareHeader");
}
public static extern MmResult waveInAddBuffer(IntPtr hWaveIn, WaveHeader pwh, int cbwh);
public static extern MmResult waveOutUnprepareHeader(
IntPtr hWaveOut,
WaveHeader lpWaveOutHdr,
int uSize);
public static extern MmResult waveOutWrite(
IntPtr hWaveOut,
WaveHeader lpWaveOutHdr,
int uSize);
public static extern MmResult waveInPrepareHeader(
IntPtr hWaveIn,
WaveHeader lpWaveInHdr,
int uSize);
