sl@0: using System;
sl@0: using System.Windows.Forms;
sl@0: using System.Runtime.InteropServices;
sl@0: using System.Diagnostics;
sl@8: using Hid.UsageTables;
sl@9: using Win32;
sl@0: 
sl@6: namespace Devices.RemoteControl
sl@0: {
sl@6: 
sl@0: 	public enum InputDevice
sl@0: 	{
sl@0: 		Key,
sl@0: 		Mouse,
sl@0: 		OEM
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 	public enum RemoteControlButton
sl@0: 	{
sl@0: 		Clear,
sl@0: 		Down,
sl@0: 		Left,
sl@0: 		Digit0,
sl@0: 		Digit1,
sl@0: 		Digit2,
sl@0: 		Digit3,
sl@0: 		Digit4,
sl@0: 		Digit5,
sl@0: 		Digit6,
sl@0: 		Digit7,
sl@0: 		Digit8,
sl@0: 		Digit9,
sl@0: 		Enter,
sl@0: 		Right,
sl@0: 		Up,
sl@0: 
sl@0: 		Back,
sl@0: 		ChannelDown,
sl@0: 		ChannelUp,
sl@0: 		FastForward,
sl@0: 		VolumeMute,
sl@0: 		Pause,
sl@0: 		Play,
sl@0:         PlayPause,
sl@0: 		Record,
sl@0: 		PreviousTrack,
sl@0: 		Rewind,
sl@0: 		NextTrack,
sl@0: 		Stop,
sl@0: 		VolumeDown,
sl@0: 		VolumeUp,
sl@0: 
sl@0: 		RecordedTV,
sl@0: 		Guide,
sl@0: 		LiveTV,
sl@0: 		Details,
sl@0: 		DVDMenu,
sl@0: 		DVDAngle,
sl@0: 		DVDAudio,
sl@0: 		DVDSubtitle,
sl@0: 		MyMusic,
sl@0: 		MyPictures,
sl@0: 		MyVideos,
sl@0: 		MyTV,
sl@0: 		OEM1,
sl@0: 		OEM2,
sl@0: 		StandBy,
sl@0: 		TVJump,
sl@0: 
sl@0: 		Unknown
sl@0: 	}
sl@0: 
sl@0: 
sl@0: 	#region RemoteControlEventArgs
sl@0: 
sl@0: 	public class RemoteControlEventArgs : EventArgs
sl@0: 	{
sl@3:         RemoteControlButton _rcb;
sl@0: 		InputDevice _device;
sl@3:         MceButton iMceButton;
sl@0: 
sl@3:         public RemoteControlEventArgs(RemoteControlButton rcb, InputDevice device)
sl@0: 		{
sl@3:             iMceButton = MceButton.Null;
sl@0: 			_rcb = rcb;
sl@0: 			_device = device;
sl@0: 		}
sl@0: 
sl@3:         public RemoteControlEventArgs(MceButton mce, InputDevice device)
sl@3:         {
sl@3:             iMceButton = mce;
sl@3:             _rcb = RemoteControlButton.Unknown;
sl@3:             _device = device;
sl@3:         }
sl@0: 
sl@0: 		public RemoteControlEventArgs()
sl@0: 		{
sl@3:             iMceButton = MceButton.Null;
sl@0: 			_rcb = RemoteControlButton.Unknown;
sl@0: 			_device = InputDevice.Key;
sl@0: 		}
sl@0: 
sl@0: 		public RemoteControlButton Button
sl@0: 		{
sl@0: 			get { return _rcb;  }
sl@0: 			set { _rcb = value; }
sl@0: 		}
sl@0: 
sl@3:         public MceButton MceButton
sl@3:         {
sl@3:             get { return iMceButton; }
sl@3:             set { iMceButton = value; }
sl@3:         }
sl@3: 
sl@0: 		public InputDevice Device
sl@0: 		{
sl@0: 			get { return _device;  }
sl@0: 			set { _device = value; }
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: 	#endregion RemoteControlEventArgs
sl@0: 
sl@0: 
sl@0: 	public sealed class RemoteControlDevice
sl@0: 	{
sl@0: 		private const int WM_KEYDOWN	= 0x0100;
sl@0: 		private const int WM_APPCOMMAND	= 0x0319;
sl@0: 		private const int WM_INPUT		= 0x00FF;
sl@0: 
sl@0: 		private const int APPCOMMAND_BROWSER_BACKWARD   = 1;
sl@0: 		private const int APPCOMMAND_VOLUME_MUTE        = 8;
sl@0: 		private const int APPCOMMAND_VOLUME_DOWN        = 9;
sl@0: 		private const int APPCOMMAND_VOLUME_UP          = 10;
sl@0: 		private const int APPCOMMAND_MEDIA_NEXTTRACK    = 11;
sl@0: 		private const int APPCOMMAND_MEDIA_PREVIOUSTRACK = 12;
sl@0: 		private const int APPCOMMAND_MEDIA_STOP         = 13;
sl@0: 		private const int APPCOMMAND_MEDIA_PLAY_PAUSE   = 14;
sl@0: 		private const int APPCOMMAND_MEDIA_PLAY         = 46;
sl@0: 		private const int APPCOMMAND_MEDIA_PAUSE        = 47;
sl@0: 		private const int APPCOMMAND_MEDIA_RECORD       = 48;
sl@0: 		private const int APPCOMMAND_MEDIA_FAST_FORWARD = 49;
sl@0: 		private const int APPCOMMAND_MEDIA_REWIND       = 50;
sl@0: 		private const int APPCOMMAND_MEDIA_CHANNEL_UP   = 51;
sl@0: 		private const int APPCOMMAND_MEDIA_CHANNEL_DOWN = 52;
sl@0: 
sl@0: 		private const int FAPPCOMMAND_MASK				= 0xF000;
sl@0: 		private const int FAPPCOMMAND_MOUSE				= 0x8000;
sl@0: 		private const int FAPPCOMMAND_KEY				= 0;
sl@0: 		private const int FAPPCOMMAND_OEM				= 0x1000;
sl@0: 
sl@6: 
sl@6: 
sl@0: 		public delegate void RemoteControlDeviceEventHandler(object sender, RemoteControlEventArgs e);
sl@0: 		public event RemoteControlDeviceEventHandler ButtonPressed;
sl@0: 
sl@0: 
sl@0: 		//-------------------------------------------------------------
sl@0: 		// constructors
sl@0: 		//-------------------------------------------------------------
sl@0: 
sl@0: 		public RemoteControlDevice()
sl@0: 		{
sl@0: 			// Register the input device to receive the commands from the
sl@0: 			// remote device. See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/remote_control.asp
sl@0: 			// for the vendor defined usage page.
sl@0: 
sl@0: 			RAWINPUTDEVICE[] rid = new RAWINPUTDEVICE[3];
sl@0: 
sl@0: 			rid[0].usUsagePage = 0xFFBC;
sl@0: 			rid[0].usUsage = 0x88;
sl@0: 			rid[0].dwFlags = 0;
sl@0: 
sl@0: 			rid[1].usUsagePage = 0x0C;
sl@0: 			rid[1].usUsage = 0x01;
sl@0: 			rid[1].dwFlags = 0;
sl@0: 
sl@0: 			rid[2].usUsagePage = 0x0C;
sl@0: 			rid[2].usUsage = 0x80;
sl@0: 			rid[2].dwFlags = 0;
sl@0: 
sl@9: 			if (!Function.RegisterRawInputDevices(rid,
sl@0: 				(uint) rid.Length,
sl@0: 				(uint) Marshal.SizeOf(rid[0]))
sl@0: 				)
sl@0: 			{
sl@0: 				throw new ApplicationException("Failed to register raw input devices.");
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 		//-------------------------------------------------------------
sl@0: 		// methods
sl@0: 		//-------------------------------------------------------------
sl@0: 
sl@0: 		public void ProcessMessage(Message message)
sl@0: 		{
sl@0: 			int param;
sl@0: 
sl@0: 			switch (message.Msg)
sl@0: 			{
sl@0: 				case WM_KEYDOWN:
sl@0: 					param = message.WParam.ToInt32();
sl@0: 					ProcessKeyDown(param);
sl@0: 					break;
sl@0: 				case WM_APPCOMMAND:
sl@0: 					param = message.LParam.ToInt32();
sl@0: 					ProcessAppCommand(param);
sl@0: 					break;
sl@0: 				case WM_INPUT:
sl@0: 					ProcessInputCommand(ref message);
sl@0:                     message.Result = new IntPtr(0);
sl@0: 					break;
sl@0: 			}
sl@0: 
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 		//-------------------------------------------------------------
sl@0: 		// methods (helpers)
sl@0: 		//-------------------------------------------------------------
sl@0: 
sl@0: 		private void ProcessKeyDown(int param)
sl@0: 		{
sl@0: 			RemoteControlButton rcb = RemoteControlButton.Unknown;
sl@0: 
sl@0: 			switch (param)
sl@0: 			{
sl@0: 				case (int) Keys.Escape:
sl@0: 					rcb = RemoteControlButton.Clear;
sl@0: 					break;
sl@0: 				case (int) Keys.Down:
sl@0: 					rcb = RemoteControlButton.Down;
sl@0: 					break;
sl@0: 				case (int) Keys.Left:
sl@0: 					rcb = RemoteControlButton.Left;
sl@0: 					break;
sl@0: 				case (int) Keys.D0:
sl@0: 					rcb = RemoteControlButton.Digit0;
sl@0: 					break;
sl@0: 				case (int) Keys.D1:
sl@0: 					rcb = RemoteControlButton.Digit1;
sl@0: 					break;
sl@0: 				case (int) Keys.D2:
sl@0: 					rcb = RemoteControlButton.Digit2;
sl@0: 					break;
sl@0: 				case (int) Keys.D3:
sl@0: 					rcb = RemoteControlButton.Digit3;
sl@0: 					break;
sl@0: 				case (int) Keys.D4:
sl@0: 					rcb = RemoteControlButton.Digit4;
sl@0: 					break;
sl@0: 				case (int) Keys.D5:
sl@0: 					rcb = RemoteControlButton.Digit5;
sl@0: 					break;
sl@0: 				case (int) Keys.D6:
sl@0: 					rcb = RemoteControlButton.Digit6;
sl@0: 					break;
sl@0: 				case (int) Keys.D7:
sl@0: 					rcb = RemoteControlButton.Digit7;
sl@0: 					break;
sl@0: 				case (int) Keys.D8:
sl@0: 					rcb = RemoteControlButton.Digit8;
sl@0: 					break;
sl@0: 				case (int) Keys.D9:
sl@0: 					rcb = RemoteControlButton.Digit9;
sl@0: 					break;
sl@0: 				case (int) Keys.Enter:
sl@0: 					rcb = RemoteControlButton.Enter;
sl@0: 					break;
sl@0: 				case (int) Keys.Right:
sl@0: 					rcb = RemoteControlButton.Right;
sl@0: 					break;
sl@0: 				case (int) Keys.Up:
sl@0: 					rcb = RemoteControlButton.Up;
sl@0: 					break;
sl@0: 			}
sl@0: 
sl@0: 			if (this.ButtonPressed != null && rcb != RemoteControlButton.Unknown)
sl@0: 				this.ButtonPressed(this, new RemoteControlEventArgs(rcb, GetDevice(param)));
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 		private void ProcessAppCommand(int param)
sl@0: 		{
sl@0: 			RemoteControlButton rcb = RemoteControlButton.Unknown;
sl@0: 
sl@0: 			int cmd	= (int) (((ushort) (param >> 16)) & ~FAPPCOMMAND_MASK);
sl@0: 
sl@0: 			switch (cmd)
sl@0: 			{
sl@0: 				case APPCOMMAND_BROWSER_BACKWARD:
sl@0: 					rcb = RemoteControlButton.Back;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_CHANNEL_DOWN:
sl@0: 					rcb = RemoteControlButton.ChannelDown;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_CHANNEL_UP:
sl@0: 					rcb = RemoteControlButton.ChannelUp;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_FAST_FORWARD:
sl@0: 					rcb = RemoteControlButton.FastForward;
sl@0: 					break;
sl@0: 				case APPCOMMAND_VOLUME_MUTE:
sl@0: 					rcb = RemoteControlButton.VolumeMute;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_PAUSE:
sl@0: 					rcb = RemoteControlButton.Pause;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_PLAY:
sl@0: 					rcb = RemoteControlButton.Play;
sl@0: 					break;
sl@0:                 case APPCOMMAND_MEDIA_PLAY_PAUSE:
sl@0:                     rcb = RemoteControlButton.PlayPause;
sl@0:                     break;
sl@0: 				case APPCOMMAND_MEDIA_RECORD:
sl@0: 					rcb = RemoteControlButton.Record;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_PREVIOUSTRACK:
sl@0: 					rcb = RemoteControlButton.PreviousTrack;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_REWIND:
sl@0: 					rcb = RemoteControlButton.Rewind;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_NEXTTRACK:
sl@0: 					rcb = RemoteControlButton.NextTrack;
sl@0: 					break;
sl@0: 				case APPCOMMAND_MEDIA_STOP:
sl@0: 					rcb = RemoteControlButton.Stop;
sl@0: 					break;
sl@0: 				case APPCOMMAND_VOLUME_DOWN:
sl@0: 					rcb = RemoteControlButton.VolumeDown;
sl@0: 					break;
sl@0: 				case APPCOMMAND_VOLUME_UP:
sl@0: 					rcb = RemoteControlButton.VolumeUp;
sl@0: 					break;
sl@0: 			}
sl@0: 
sl@0: 			if (this.ButtonPressed != null && rcb != RemoteControlButton.Unknown)
sl@0: 				this.ButtonPressed(this, new RemoteControlEventArgs(rcb, GetDevice(param)));
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 		private void ProcessInputCommand(ref Message message)
sl@0: 		{
sl@7:             Debug.WriteLine("================WM_INPUT================");
sl@6: 
sl@0: 
sl@10:             //Declare a pointer
sl@10:             IntPtr rawInputBuffer = IntPtr.Zero;
sl@0: 
sl@10:             try
sl@10:             {
sl@10:                 //Fetch raw input
sl@11:                 RAWINPUT rawInput = new RAWINPUT();
sl@11:                 if (!RawInput.GetRawInputData(message.LParam, ref rawInput, ref rawInputBuffer))
sl@6:                 {
sl@6:                     return;
sl@6:                 }
sl@6: 
sl@10:                 //Fetch device info
sl@10:                 RID_DEVICE_INFO deviceInfo = new RID_DEVICE_INFO();
sl@11:                 if (!RawInput.GetDeviceInfo(rawInput.header.hDevice, ref deviceInfo))
sl@10:                 {
sl@10:                     return;
sl@10:                 }
sl@11:                
sl@6: 
sl@11:                 if (rawInput.header.dwType == Const.RIM_TYPEHID)  //Check that our raw input is HID                        
sl@6:                 {
sl@11:                     Debug.WriteLine("WM_INPUT source device is HID.");
sl@11:                     //Get Usage Page and Usage
sl@11:                     Debug.WriteLine("Usage Page: 0x" + deviceInfo.hid.usUsagePage.ToString("X4") + " Usage: 0x" + deviceInfo.hid.usUsage.ToString("X4"));
sl@10: 
sl@6:                     //Make sure both usage page and usage are matching MCE remote
sl@11:                     //TODO: handle more that just MCE usage page.
sl@8:                     if (deviceInfo.hid.usUsagePage != (ushort)Hid.UsagePage.MceRemote || deviceInfo.hid.usUsage != (ushort)Hid.UsageId.MceRemoteUsage)
sl@6:                     {
sl@6:                         Debug.WriteLine("Not MCE remote page and usage.");
sl@6:                         return;
sl@6:                     }
sl@0: 
sl@11:                     if (!(rawInput.hid.dwSizeHid > 1     //Make sure our HID msg size more than 1. In fact the first ushort is irrelevant to us for now
sl@11:                         && rawInput.hid.dwCount > 0))    //Check that we have at least one HID msg
sl@3:                     {
sl@11:                         return;
sl@11:                     }
sl@11: 
sl@11: 
sl@11:                     //Allocate a buffer for one HID input
sl@11:                     byte[] hidInput = new byte[rawInput.hid.dwSizeHid];
sl@11: 
sl@11:                     //For each HID input in our raw input
sl@11:                     for (int i = 0; i < rawInput.hid.dwCount; i++)
sl@11:                     {
sl@11:                         //Compute the address from which to copy our HID input
sl@11:                         int hidInputOffset = 0;
sl@11:                         unsafe
sl@3:                         {
sl@11:                             byte* source = (byte*)rawInputBuffer;
sl@11:                             source += sizeof(RAWINPUTHEADER) + sizeof(RAWHID) + (rawInput.hid.dwSizeHid * i);
sl@11:                             hidInputOffset = (int)source;
sl@11:                         }
sl@11: 
sl@11:                         //Copy HID input into our buffer
sl@11:                         Marshal.Copy(new IntPtr(hidInputOffset), hidInput, 0, rawInput.hid.dwSizeHid);
sl@11: 
sl@11:                         //Print HID raw input in our debug output
sl@11:                         string hidDump = "HID " + rawInput.hid.dwCount + "/" + rawInput.hid.dwSizeHid + ":";
sl@11:                         foreach (byte b in hidInput)
sl@11:                         {
sl@11:                             hidDump += b.ToString("X2");
sl@11:                         }
sl@11:                         Debug.WriteLine(hidDump);
sl@11:                         
sl@11:                         ushort usage = 0;
sl@11:                         //hidInput[0] //Not sure what's the meaning of the code at offset 0
sl@11:                         if (hidInput.Length == 2)
sl@11:                         {
sl@11:                             //Single byte code
sl@11:                             usage = hidInput[1]; //Get button code
sl@11:                         }
sl@11:                         else if (hidInput.Length > 2) //Defensive
sl@11:                         {
sl@11:                             //Assuming double bytes code
sl@11:                             usage = (ushort)((hidInput[1] << 2) + hidInput[2]);
sl@11:                         }
sl@11: 
sl@11:                         //
sl@11:                         if (Enum.IsDefined(typeof(MceButton), usage) && usage != 0) //Our button is a known MCE button
sl@11:                         {
sl@11:                             if (this.ButtonPressed != null) //What's that?
sl@11:                             {
sl@11:                                 this.ButtonPressed(this, new RemoteControlEventArgs((MceButton)usage, InputDevice.OEM));
sl@11:                             }
sl@3:                         }
sl@3:                     }
sl@11: 
sl@10:                 }
sl@11:                 else if (rawInput.header.dwType == Const.RIM_TYPEMOUSE)
sl@10:                 {
sl@11:                     Debug.WriteLine("WM_INPUT source device is Mouse.");
sl@10:                     // do mouse handling...
sl@10:                 }
sl@11:                 else if (rawInput.header.dwType == Const.RIM_TYPEKEYBOARD)
sl@10:                 {
sl@11:                     Debug.WriteLine("WM_INPUT source device is Keyboard.");
sl@10:                     // do keyboard handling...
sl@11: 
sl@10:                 }
sl@10:             }
sl@10:             finally
sl@10:             {
sl@10:                 //Always executed when leaving our try block
sl@10:                 Marshal.FreeHGlobal(rawInputBuffer);
sl@10:             }
sl@0: 		}
sl@0: 
sl@0: 
sl@0: 		private InputDevice GetDevice(int param)
sl@0: 		{
sl@0: 			InputDevice inputDevice;
sl@0: 
sl@0: 			switch ((int) (((ushort) (param >> 16)) & FAPPCOMMAND_MASK))
sl@0: 			{
sl@0: 				case FAPPCOMMAND_OEM:
sl@0: 					inputDevice = InputDevice.OEM;
sl@0: 					break;
sl@0: 				case FAPPCOMMAND_MOUSE:
sl@0: 					inputDevice = InputDevice.Mouse;
sl@0: 					break;
sl@0: 				default:
sl@0: 					inputDevice = InputDevice.Key;
sl@0: 					break;
sl@0: 			}
sl@0: 
sl@0: 			return inputDevice;
sl@0: 		}
sl@0: 	}
sl@0: }