static NTSTATUS NTAPI MPU401DeviceControl	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp
	)		`[static]`
Definition at line 231 of file mpu401.c.
Referenced by DriverEntry().
{
    PIO_STACK_LOCATION Stack;
    PDEVICE_EXTENSION DeviceExtension;
    ULONG ByteCount;
    PUCHAR Data;

    DPRINT("MPU401DeviceControl() called!\n");

    DeviceExtension = DeviceObject->DeviceExtension;
    Stack = IoGetCurrentIrpStackLocation(Irp);

    DPRINT("Control code %d [0x%x]\n", Stack->Parameters.DeviceIoControl.IoControlCode,
                Stack->Parameters.DeviceIoControl.IoControlCode);

    switch(Stack->Parameters.DeviceIoControl.IoControlCode)
    {
        case IOCTL_MIDI_PLAY :
        {
            DPRINT("Received IOCTL_MIDI_PLAY\n");
            Data = (PUCHAR) Irp->AssociatedIrp.SystemBuffer;

            DPRINT("Sending %d bytes of MIDI data to 0x%d:\n", Stack->Parameters.DeviceIoControl.InputBufferLength, DeviceExtension->Port);

            for (ByteCount = 0; ByteCount < Stack->Parameters.DeviceIoControl.InputBufferLength; ByteCount ++)
            {
                DPRINT("0x%x ", Data[ByteCount]);

                MPU401_WRITE_BYTE(DeviceExtension->Port, Data[ByteCount]);
//                if (WaitToSend(MPU401_PORT))
//                    MPU401_WRITE_DATA(MPU401_PORT, Data[ByteCount]);
            }

            Irp->IoStatus.Status = STATUS_SUCCESS;
            IoCompleteRequest(Irp, IO_NO_INCREMENT);

            return(STATUS_SUCCESS);
        }
    }

    return(STATUS_SUCCESS);

/*
  DeviceExtension = DeviceObject->DeviceExtension;
  Stack = IoGetCurrentIrpStackLocation(Irp);
  BeepParam = (PBEEP_SET_PARAMETERS)Irp->AssociatedIrp.SystemBuffer;

  Irp->IoStatus.Information = 0;

  if (Stack->Parameters.DeviceIoControl.IoControlCode != IOCTL_BEEP_SET)
    {
      Irp->IoStatus.Status = STATUS_NOT_IMPLEMENTED;
      IoCompleteRequest(Irp,
            IO_NO_INCREMENT);
      return(STATUS_NOT_IMPLEMENTED);
    }

  if ((Stack->Parameters.DeviceIoControl.InputBufferLength != sizeof(BEEP_SET_PARAMETERS))
      || (BeepParam->Frequency < BEEP_FREQUENCY_MINIMUM)
      || (BeepParam->Frequency > BEEP_FREQUENCY_MAXIMUM))
    {
      Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
      IoCompleteRequest(Irp,
            IO_NO_INCREMENT);
      return(STATUS_INVALID_PARAMETER);
    }

  DueTime.QuadPart = 0;
*/
  /* do the beep!! */
/*  DPRINT("Beep:\n  Freq: %lu Hz\n  Dur: %lu ms\n",
     pbsp->Frequency,
     pbsp->Duration);

  if (BeepParam->Duration >= 0)
    {
      DueTime.QuadPart = (LONGLONG)BeepParam->Duration * -10000;

      KeSetTimer(&DeviceExtension->Timer,
         DueTime,
         &DeviceExtension->Dpc);

      HalMakeBeep(BeepParam->Frequency);
      DeviceExtension->BeepOn = TRUE;
      KeWaitForSingleObject(&DeviceExtension->Event,
                Executive,
                KernelMode,
                FALSE,
                NULL);
    }
  else if (BeepParam->Duration == (DWORD)-1)
    {
      if (DeviceExtension->BeepOn == TRUE)
    {
      HalMakeBeep(0);
      DeviceExtension->BeepOn = FALSE;
    }
      else
    {
      HalMakeBeep(BeepParam->Frequency);
      DeviceExtension->BeepOn = TRUE;
    }
    }

  DPRINT("Did the beep!\n");

  Irp->IoStatus.Status = STATUS_SUCCESS;
  IoCompleteRequest(Irp,
            IO_NO_INCREMENT);
  return(STATUS_SUCCESS);
*/
}
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