public void StartReceiving(Clock clock, bool handleSysEx)
{
if (isInsideInputHandler)
{
throw new InvalidOperationException("Device is receiving.");
}
lock (this)
{
CheckOpen();
CheckNotReceiving();
#region SysEx
if (handleSysEx)
{
LongMsgBuffers.Add(CreateLongMsgBuffer());
}
#endregion
CheckReturnCode(Win32API.midiInStart(handle));
isReceiving = true;
this.clock = clock;
}
}
/// <summary>
/// Releases the resources associated with the specified MidiHeader pointer.
/// </summary>
/// <param name="ptr">
/// The pointer to MIDIHDR buffer.
/// </param>
private bool DestroyLongMsgBuffer(UIntPtr ptr)
{
IntPtr newPtr = unchecked ((IntPtr)(long)(ulong)ptr);
UInt32 size = (UInt32)Marshal.SizeOf <Win32API.MIDIHDR>();
CheckReturnCode(Win32API.midiInUnprepareHeader(handle, newPtr, size));
Win32API.MIDIHDR header = Marshal.PtrToStructure <Win32API.MIDIHDR>(newPtr);
System.Runtime.InteropServices.Marshal.FreeHGlobal(header.lpData);
System.Runtime.InteropServices.Marshal.FreeHGlobal(newPtr);
LongMsgBuffers.Remove(newPtr);
return(true);
}
