/// <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);