public void Play(byte[] audioData, int offset, int count)
{
if (m_IsDisposed)
{
throw new ObjectDisposedException("WaveOut");
}
if (audioData == null)
{
throw new ArgumentNullException("audioData");
}
if ((count % m_BlockSize) != 0)
{
throw new ArgumentException("Audio data is not n * BlockSize.");
}
while (m_pPlayItems.Count > 10)
{
Thread.Sleep(10);
}
byte[] data = new byte[count];
Array.Copy(audioData, offset, data, 0, count);
GCHandle dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
WAVEHDR wavHeader = new WAVEHDR();
wavHeader.lpData = dataHandle.AddrOfPinnedObject();
wavHeader.dwBufferLength = (uint)data.Length;
wavHeader.dwBytesRecorded = 0;
wavHeader.dwUser = IntPtr.Zero;
wavHeader.dwFlags = 0;
wavHeader.dwLoops = 0;
wavHeader.lpNext = IntPtr.Zero;
wavHeader.reserved = 0;
GCHandle headerHandle = GCHandle.Alloc(wavHeader, GCHandleType.Pinned);
int result = 0;
result = WavMethods.waveOutPrepareHeader(m_pWavDevHandle, headerHandle.AddrOfPinnedObject(), Marshal.SizeOf(wavHeader));
if (result == MMSYSERR.NOERROR)
{
PlayItem item = new PlayItem(ref headerHandle, ref dataHandle, data.Length);
lock (m_pPlayItems) {
m_pPlayItems.Add(item);
m_BytesBuffered += data.Length;
if (m_BytesBuffered < m_MinBuffer / 10)
{
if (!m_IsBuffing)
{
WavMethods.waveOutPause(m_pWavDevHandle);
m_IsBuffing = true;
}
}
else if (m_IsBuffing && m_BytesBuffered > m_MinBuffer)
{
WavMethods.waveOutRestart(m_pWavDevHandle);
m_IsBuffing = false;
}
result = WavMethods.waveOutWrite(m_pWavDevHandle, headerHandle.AddrOfPinnedObject(), Marshal.SizeOf(wavHeader));
}
}
else
{
dataHandle.Free();
headerHandle.Free();
}
//--------------------------------------------------------------------------------------------------
}
/// <summary>
/// Plays specified audio data bytes. If player is currently playing, data will be queued for playing.
/// </summary>
/// <param name="audioData">Audio data. Data boundary must n * BlockSize.</param>
/// <param name="offset">Offset in the buffer.</param>
/// <param name="count">Number of bytes to play form the specified offset.</param>
/// <exception cref="ObjectDisposedException">Is raised when this object is disposed and this method is accessed.</exception>
/// <exception cref="ArgumentNullException">Is raised when <b>audioData</b> is null.</exception>
/// <exception cref="ArgumentException">Is raised when <b>audioData</b> is with invalid length.</exception>
public void Play(byte[] audioData, int offset, int count)
{
if (m_IsDisposed)
{
throw new ObjectDisposedException("WaveOut");
}
if (audioData == null)
{
throw new ArgumentNullException("audioData");
}
if ((count % m_BlockSize) != 0)
{
throw new ArgumentException("Audio data is not n * BlockSize.");
}
//--- Queue specified audio block for play. --------------------------------------------------------
byte[] data = new byte[count];
Array.Copy(audioData, offset, data, 0, count);
GCHandle dataHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
// m_BytesBuffered += data.Length;
WAVEHDR wavHeader = new WAVEHDR();
wavHeader.lpData = dataHandle.AddrOfPinnedObject();
wavHeader.dwBufferLength = (uint)data.Length;
wavHeader.dwBytesRecorded = 0;
wavHeader.dwUser = IntPtr.Zero;
wavHeader.dwFlags = 0;
wavHeader.dwLoops = 0;
wavHeader.lpNext = IntPtr.Zero;
wavHeader.reserved = 0;
GCHandle headerHandle = GCHandle.Alloc(wavHeader, GCHandleType.Pinned);
int result = 0;
result = WavMethods.waveOutPrepareHeader(m_pWavDevHandle, headerHandle.AddrOfPinnedObject(), Marshal.SizeOf(wavHeader));
if (result == MMSYSERR.NOERROR)
{
PlayItem item = new PlayItem(ref headerHandle, ref dataHandle, data.Length);
m_pPlayItems.Add(item);
// We ran out of minimum buffer, we must pause playing while min buffer filled.
if (m_BytesBuffered < 1000)
{
if (!m_IsPaused)
{
WavMethods.waveOutPause(m_pWavDevHandle);
m_IsPaused = true;
}
//File.AppendAllText("aaaa.txt","Begin buffer\r\n");
}
// Buffering completed,we may resume playing.
else if (m_IsPaused && m_BytesBuffered > m_MinBuffer)
{
WavMethods.waveOutRestart(m_pWavDevHandle);
m_IsPaused = false;
//File.AppendAllText("aaaa.txt","end buffer: " + m_BytesBuffered + "\r\n");
}
/*
* // TODO: If we ran out of minimum buffer, we must pause playing while min buffer filled.
* if(m_BytesBuffered < m_MinBuffer){
* if(!m_IsPaused){
* WavMethods.waveOutPause(m_pWavDevHandle);
* m_IsPaused = true;
* }
* }
* else if(m_IsPaused){
* WavMethods.waveOutRestart(m_pWavDevHandle);
* }*/
m_BytesBuffered += data.Length;
result = WavMethods.waveOutWrite(m_pWavDevHandle, headerHandle.AddrOfPinnedObject(), Marshal.SizeOf(wavHeader));
}
else
{
dataHandle.Free();
headerHandle.Free();
}
//--------------------------------------------------------------------------------------------------
}
