/// <summary>
/// Open WaveOut.
/// WaveOutを開きます。
/// </summary>
/// <param name="deviceId">WaveOut.WaveMapperか、GetDeviceNames()のindex</param>
/// <param name="samplesPerSec">44100 (Hz)</param>
/// <param name="bitsPerSample">16 or 8</param>
/// <param name="channels">2 or 1</param>
public WaveOut(int deviceId, int samplesPerSec, int bitsPerSample, int channels)
{
Win32.WaveFormatEx wfx = new Win32.WaveFormatEx(samplesPerSec, bitsPerSample, channels);
eventHandler = new MessageThread();
IntPtr ptr = new IntPtr(eventHandler.Win32ThreadID);
int mmret = Win32.waveOutOpen(out deviceHandle, (uint)deviceId, ref wfx, ptr, IntPtr.Zero, Win32.CALLBACK_THREAD);
if (mmret != Win32.MMSYSERR_NOERROR)
{
eventHandler.Dispose();
throw new Exception("デバイスが開けませんでした。(" + mmret + ")");
}
eventHandler.MessageHandlers[Win32.MM_WOM_DONE] = delegate(Message m)
{
Win32.WaveHeader header = Win32.WaveHeader.FromIntPtr(m.LParam);
WaveBuffer buf = WaveBuffer.FromWaveHeader(header);
Win32.waveOutUnprepareHeader(deviceHandle, buf.pHeader, Win32.WaveHeader.SizeOfWaveHeader);
Interlocked.Add(ref enqueuedBufferSize, -buf.Data.Length);
buf.Dispose();
if (OnDone != null)
{
OnDone();
}
};
}
public WaveBuffer(uint dwSize)
{
Data = new byte[dwSize];
dataHandle = GCHandle.Alloc(Data, GCHandleType.Pinned);
bufferHandle = GCHandle.Alloc(this);
Win32.WaveHeader header = new Win32.WaveHeader();
header.lpData = dataHandle.AddrOfPinnedObject();
header.dwBufferLength = (uint)Data.Length;
header.dwUser = GCHandle.ToIntPtr(bufferHandle);
pHeader = Marshal.AllocHGlobal(Win32.WaveHeader.SizeOfWaveHeader);
Marshal.StructureToPtr(header, pHeader, true);
}
public void SetLength(int newLength)
{
if (newLength < 0 || newLength > Data.Length)
{
throw new ArgumentOutOfRangeException("newLength");
}
if (newLength != length)
{
length = newLength;
Win32.WaveHeader header = (Win32.WaveHeader)Marshal.PtrToStructure(pHeader, typeof(Win32.WaveHeader));
header.dwBufferLength = (uint)length;
Marshal.StructureToPtr(header, pHeader, true);
}
}
/// <summary>
/// Open WaveIn.
/// WaveInを開きます。
/// </summary>
/// <param name="deviceId">WaveIn.WaveMapper or index of GetDeviceNames(). WaveIn.WaveMapperか、GetDeviceNames()のindex</param>
/// <param name="samplesPerSec">ex) 44100 (Hz)</param>
/// <param name="bitsPerSample">16 or 8</param>
/// <param name="channels">2 or 1</param>
public WaveIn(int deviceId, int samplesPerSec, int bitsPerSample, int channels)
{
Win32.WaveFormatEx wfx = new Win32.WaveFormatEx(samplesPerSec, bitsPerSample, channels);
eventHandler = new MessageThread(ThreadPriority.AboveNormal);
eventHandler.MessageHandlers[Win32.MM_WIM_DATA] = delegate(Message m)
{
Win32.WaveHeader header = Win32.WaveHeader.FromIntPtr(m.LParam);
WaveBuffer buf = WaveBuffer.FromWaveHeader(header);
int bytesRecorded = (int)header.dwBytesRecorded;
if (OnData != null && bytesRecorded != 0)
{
byte[] data = buf.Data;
if (bytesRecorded != buf.Data.Length)
{
data = new byte[bytesRecorded];
Array.Copy(buf.Data, data, bytesRecorded);
}
OnData(data);
}
if (recording)
{
Win32.waveInAddBuffer(deviceHandle, buf.pHeader, Win32.WaveHeader.SizeOfWaveHeader);
}
else
{
Win32.waveInUnprepareHeader(deviceHandle, buf.pHeader, Win32.WaveHeader.SizeOfWaveHeader);
buf.Dispose();
Interlocked.Decrement(ref enqueuedBufferCount);
}
};
int mmret = Win32.waveInOpen(out deviceHandle, (uint)deviceId, ref wfx, new IntPtr(eventHandler.Win32ThreadID), IntPtr.Zero, Win32.CALLBACK_THREAD);
if (mmret != Win32.MMSYSERR_NOERROR)
{
eventHandler.Dispose();
throw new Exception("Error on waveInOpen. (ret=" + mmret + ")");
}
}
public static WaveBuffer FromWaveHeader(Win32.WaveHeader header)
{
return((WaveBuffer)GCHandle.FromIntPtr(header.dwUser).Target);
}
public WaveBuffer(uint dwSize)
{
Data = new byte[dwSize];
dataHandle = GCHandle.Alloc(Data, GCHandleType.Pinned);
bufferHandle = GCHandle.Alloc(this);
Win32.WaveHeader header = new Win32.WaveHeader();
header.lpData = dataHandle.AddrOfPinnedObject();
header.dwBufferLength = (uint)Data.Length;
header.dwUser = GCHandle.ToIntPtr(bufferHandle);
pHeader = Marshal.AllocHGlobal(Win32.WaveHeader.SizeOfWaveHeader);
Marshal.StructureToPtr(header, pHeader, true);
}
