sl@0: using System;
sl@0: using System.Windows.Forms;
sl@0: using System.Runtime.InteropServices;
sl@0: using System.Diagnostics;
sl@23: using System.Text;
sl@24: using Microsoft.Win32.SafeHandles;
sl@23: 
sl@8: using Hid.UsageTables;
sl@9: using Win32;
sl@0: 
sl@23: 
sl@24: 
sl@6: namespace Devices.RemoteControl
sl@0: {
sl@6: 
sl@27:     public enum InputDevice
sl@27:     {
sl@27:         Key,
sl@27:         Mouse,
sl@27:         OEM
sl@27:     }
sl@0: 
sl@0: 
sl@27:     public enum RemoteControlButton
sl@27:     {
sl@27:         Clear,
sl@27:         Down,
sl@27:         Left,
sl@27:         Digit0,
sl@27:         Digit1,
sl@27:         Digit2,
sl@27:         Digit3,
sl@27:         Digit4,
sl@27:         Digit5,
sl@27:         Digit6,
sl@27:         Digit7,
sl@27:         Digit8,
sl@27:         Digit9,
sl@27:         Enter,
sl@27:         Right,
sl@27:         Up,
sl@0: 
sl@27:         Back,
sl@27:         ChannelDown,
sl@27:         ChannelUp,
sl@27:         FastForward,
sl@27:         VolumeMute,
sl@27:         Pause,
sl@27:         Play,
sl@0:         PlayPause,
sl@27:         Record,
sl@27:         PreviousTrack,
sl@27:         Rewind,
sl@27:         NextTrack,
sl@27:         Stop,
sl@27:         VolumeDown,
sl@27:         VolumeUp,
sl@0: 
sl@27:         RecordedTV,
sl@27:         Guide,
sl@27:         LiveTV,
sl@27:         MoreInfo,
sl@12:         Print,
sl@27:         DVDMenu,
sl@27:         DVDAngle,
sl@27:         DVDAudio,
sl@27:         DVDSubtitle,
sl@27:         MyMusic,
sl@27:         MyPictures,
sl@27:         MyVideos,
sl@27:         MyTV,
sl@27:         OEM1,
sl@27:         OEM2,
sl@27:         StandBy,
sl@27:         TVJump,
sl@0: 
sl@27:         Unknown
sl@27:     }
sl@0: 
sl@0: 
sl@27:     #region RemoteControlEventArgs
sl@0: 
sl@27:     public class RemoteControlEventArgs : EventArgs
sl@27:     {
sl@3:         RemoteControlButton _rcb;
sl@27:         InputDevice _device;
sl@30:         WindowsMediaCenterRemoteControl iMceButton;
sl@19:         ConsumerControl iConsumerControl;
sl@0: 
sl@3:         public RemoteControlEventArgs(RemoteControlButton rcb, InputDevice device)
sl@27:         {
sl@19:             SetNullButtons();
sl@19:             //
sl@27:             _rcb = rcb;
sl@27:             _device = device;
sl@27:         }
sl@0: 
sl@19:         public RemoteControlEventArgs(ConsumerControl aConsumerControl, InputDevice device)
sl@19:         {
sl@19:             SetNullButtons();
sl@19:             //
sl@27:             iConsumerControl = aConsumerControl;
sl@19:             _device = device;
sl@19:         }
sl@19: 
sl@19: 
sl@30:         public RemoteControlEventArgs(WindowsMediaCenterRemoteControl mce, InputDevice device)
sl@3:         {
sl@19:             SetNullButtons();
sl@19:             //
sl@27:             iMceButton = mce;
sl@19:             _device = device;
sl@19:         }
sl@19: 
sl@19:         private void SetNullButtons()
sl@19:         {
sl@19:             iConsumerControl = ConsumerControl.Null;
sl@30:             iMceButton = WindowsMediaCenterRemoteControl.Null;
sl@3:             _rcb = RemoteControlButton.Unknown;
sl@3:         }
sl@0: 
sl@27:         public RemoteControlEventArgs()
sl@27:         {
sl@30:             iMceButton = WindowsMediaCenterRemoteControl.Null;
sl@27:             _rcb = RemoteControlButton.Unknown;
sl@27:             _device = InputDevice.Key;
sl@27:         }
sl@0: 
sl@27:         public RemoteControlButton Button
sl@27:         {
sl@27:             get { return _rcb; }
sl@27:             set { _rcb = value; }
sl@27:         }
sl@0: 
sl@30:         public WindowsMediaCenterRemoteControl MceButton
sl@3:         {
sl@3:             get { return iMceButton; }
sl@3:             set { iMceButton = value; }
sl@3:         }
sl@3: 
sl@19:         public ConsumerControl ConsumerControl
sl@19:         {
sl@19:             get { return iConsumerControl; }
sl@19:             set { iConsumerControl = value; }
sl@19:         }
sl@19: 
sl@27:         public InputDevice Device
sl@27:         {
sl@27:             get { return _device; }
sl@27:             set { _device = value; }
sl@27:         }
sl@27:     }
sl@0: 
sl@27:     #endregion RemoteControlEventArgs
sl@0: 
sl@0: 
sl@27:     public sealed class RemoteControlDevice
sl@27:     {
sl@27:         public delegate bool RemoteControlDeviceEventHandler(object sender, RemoteControlEventArgs e);
sl@27:         public event RemoteControlDeviceEventHandler ButtonPressed;
sl@0: 
sl@19:         /// <summary>
sl@19:         /// Return true if the usage was processed.
sl@19:         /// </summary>
sl@19:         /// <param name="aUsage"></param>
sl@19:         /// <returns></returns>
sl@19:         public delegate bool HidUsageHandler(ushort aUsage);
sl@12: 
sl@29:         Hid.HidHandler iHidHandler;
sl@29: 
sl@0: 
sl@27:         //-------------------------------------------------------------
sl@27:         // constructors
sl@27:         //-------------------------------------------------------------
sl@0: 
sl@27:         public RemoteControlDevice(IntPtr aHWND)
sl@27:         {
sl@27:             // Register the input device to receive the commands from the
sl@27:             // remote device. See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/remote_control.asp
sl@27:             // for the vendor defined usage page.
sl@27: 
sl@27:             RAWINPUTDEVICE[] rid = new RAWINPUTDEVICE[4];
sl@0: 
sl@21:             int i = 0;
sl@30:             rid[i].usUsagePage = (ushort)Hid.UsagePage.WindowsMediaCenterRemoteControl;
sl@30:             rid[i].usUsage = (ushort)Hid.UsageCollectionWindowsMediaCenter.WindowsMediaCenterRemoteControl;
sl@21:             rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;
sl@21:             rid[i].hwndTarget = aHWND;
sl@0: 
sl@21:             i++;
sl@21:             rid[i].usUsagePage = (ushort)Hid.UsagePage.Consumer;
sl@28:             rid[i].usUsage = (ushort)Hid.UsageCollectionConsumer.ConsumerControl;
sl@21:             rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;
sl@21:             rid[i].hwndTarget = aHWND;
sl@0: 
sl@21:             i++;
sl@21:             rid[i].usUsagePage = (ushort)Hid.UsagePage.Consumer;
sl@28:             rid[i].usUsage = (ushort)Hid.UsageCollectionConsumer.Selection;
sl@21:             rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;
sl@21:             rid[i].hwndTarget = aHWND;
sl@21: 
sl@22:             i++;
sl@28:             rid[i].usUsagePage = (ushort)Hid.UsagePage.GenericDesktopControls;
sl@28:             rid[i].usUsage = (ushort)Hid.UsageCollectionGenericDesktop.SystemControl;
sl@22:             rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;
sl@22:             rid[i].hwndTarget = aHWND;
sl@21: 
sl@27:             //i++;
sl@28:             //rid[i].usUsagePage = (ushort)Hid.UsagePage.GenericDesktopControls;
sl@28:             //rid[i].usUsage = (ushort)Hid.UsageCollectionGenericDesktop.Keyboard;
sl@27:             //rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;
sl@27:             //rid[i].hwndTarget = aHWND;
sl@21: 
sl@21:             //i++;
sl@28:             //rid[i].usUsagePage = (ushort)Hid.UsagePage.GenericDesktopControls;
sl@28:             //rid[i].usUsage = (ushort)Hid.UsageCollectionGenericDesktop.Mouse;
sl@21:             //rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;
sl@21:             //rid[i].hwndTarget = aHWND;
sl@21: 
sl@0: 
sl@29:             iHidHandler = new Hid.HidHandler(rid);
sl@29:             if (!iHidHandler.IsRegistered)
sl@27:             {
sl@29:                 Debug.WriteLine("Failed to register raw input devices: " + Marshal.GetLastWin32Error().ToString());
sl@27:             }
sl@29:             iHidHandler.OnHidEvent += HandleHidEvent;
sl@27:         }
sl@0: 
sl@0: 
sl@27:         //-------------------------------------------------------------
sl@27:         // methods
sl@27:         //-------------------------------------------------------------
sl@0: 
sl@27:         public void ProcessMessage(Message message)
sl@27:         {
sl@27:             switch (message.Msg)
sl@27:             {
sl@27:                 case Const.WM_KEYDOWN:
sl@15:                     ProcessKeyDown(message.WParam);
sl@27:                     break;
sl@15:                 case Const.WM_INPUT:
sl@19:                     //Returning zero means we processed that message.
sl@19:                     message.Result = new IntPtr(0);
sl@27:                     ProcessInputCommand(ref message);
sl@27:                     break;
sl@27:             }
sl@0: 
sl@27:         }
sl@0: 
sl@0: 
sl@27:         //-------------------------------------------------------------
sl@27:         // methods (helpers)
sl@27:         //-------------------------------------------------------------
sl@0: 
sl@27:         private void ProcessKeyDown(IntPtr wParam)
sl@27:         {
sl@27:             RemoteControlButton rcb = RemoteControlButton.Unknown;
sl@0: 
sl@15:             switch (wParam.ToInt32())
sl@27:             {
sl@27:                 case (int)Keys.Escape:
sl@27:                     rcb = RemoteControlButton.Clear;
sl@22:                     break;
sl@22:                 case (int)Keys.Up:
sl@22:                     rcb = RemoteControlButton.Up;
sl@22:                     break;
sl@27:                 case (int)Keys.Down:
sl@27:                     rcb = RemoteControlButton.Down;
sl@27:                     break;
sl@27:                 case (int)Keys.Left:
sl@27:                     rcb = RemoteControlButton.Left;
sl@22:                     break;
sl@22:                 case (int)Keys.Right:
sl@22:                     rcb = RemoteControlButton.Right;
sl@22:                     break;
sl@22:                 case (int)Keys.Enter:
sl@22:                     rcb = RemoteControlButton.Enter;
sl@22:                     break;
sl@27:                 case (int)Keys.D0:
sl@27:                     rcb = RemoteControlButton.Digit0;
sl@22:                     break;
sl@27:                 case (int)Keys.D1:
sl@27:                     rcb = RemoteControlButton.Digit1;
sl@27:                     break;
sl@27:                 case (int)Keys.D2:
sl@27:                     rcb = RemoteControlButton.Digit2;
sl@27:                     break;
sl@27:                 case (int)Keys.D3:
sl@27:                     rcb = RemoteControlButton.Digit3;
sl@27:                     break;
sl@27:                 case (int)Keys.D4:
sl@27:                     rcb = RemoteControlButton.Digit4;
sl@27:                     break;
sl@27:                 case (int)Keys.D5:
sl@27:                     rcb = RemoteControlButton.Digit5;
sl@27:                     break;
sl@27:                 case (int)Keys.D6:
sl@27:                     rcb = RemoteControlButton.Digit6;
sl@27:                     break;
sl@27:                 case (int)Keys.D7:
sl@27:                     rcb = RemoteControlButton.Digit7;
sl@27:                     break;
sl@27:                 case (int)Keys.D8:
sl@27:                     rcb = RemoteControlButton.Digit8;
sl@27:                     break;
sl@27:                 case (int)Keys.D9:
sl@27:                     rcb = RemoteControlButton.Digit9;
sl@27:                     break;
sl@27:             }
sl@0: 
sl@22:             if (this.ButtonPressed != null && rcb != RemoteControlButton.Unknown)
sl@22:             {
sl@22:                 Debug.WriteLine("KeyDown: " + rcb.ToString());
sl@20:                 this.ButtonPressed(this, new RemoteControlEventArgs(rcb, InputDevice.Key));
sl@22:             }
sl@27:         }
sl@0: 
sl@0: 
sl@12:         /// <summary>
sl@12:         /// 
sl@12:         /// </summary>
sl@12:         /// <param name="aUsage"></param>
sl@19:         private bool HidConsumerDeviceHandler(ushort aUsage)
sl@12:         {
sl@12:             if (aUsage == 0)
sl@12:             {
sl@12:                 //Just skip those
sl@19:                 return false;
sl@12:             }
sl@12: 
sl@12:             if (Enum.IsDefined(typeof(ConsumerControl), aUsage) && aUsage != 0) //Our button is a known consumer control
sl@12:             {
sl@12:                 if (this.ButtonPressed != null)
sl@12:                 {
sl@19:                     return this.ButtonPressed(this, new RemoteControlEventArgs((ConsumerControl)aUsage, InputDevice.OEM));
sl@12:                 }
sl@19:                 return false;
sl@12:             }
sl@12:             else
sl@12:             {
sl@12:                 Debug.WriteLine("Unknown Consumer Control!");
sl@19:                 return false;
sl@12:             }
sl@12:         }
sl@12: 
sl@12:         /// <summary>
sl@12:         /// 
sl@12:         /// </summary>
sl@12:         /// <param name="aUsage"></param>
sl@19:         private bool HidMceRemoteHandler(ushort aUsage)
sl@12:         {
sl@12:             if (aUsage == 0)
sl@12:             {
sl@12:                 //Just skip those
sl@19:                 return false;
sl@12:             }
sl@12: 
sl@12: 
sl@30:             if (Enum.IsDefined(typeof(WindowsMediaCenterRemoteControl), aUsage) && aUsage != 0) //Our button is a known MCE button
sl@12:             {
sl@12:                 if (this.ButtonPressed != null)
sl@12:                 {
sl@30:                     return this.ButtonPressed(this, new RemoteControlEventArgs((WindowsMediaCenterRemoteControl)aUsage, InputDevice.OEM));
sl@12:                 }
sl@19:                 return false;
sl@12:             }
sl@12:             else
sl@12:             {
sl@12:                 Debug.WriteLine("Unknown MCE button!");
sl@19:                 return false;
sl@12:             }
sl@12:         }
sl@12: 
sl@29:         /// <summary>
sl@29:         /// 
sl@29:         /// </summary>
sl@29:         /// <param name="message"></param>
sl@27:         private void ProcessInputCommand(ref Message message)
sl@27:         {
sl@15:             //We received a WM_INPUT message
sl@7:             Debug.WriteLine("================WM_INPUT================");
sl@6: 
sl@29:             iHidHandler.ProcessInput(message);
sl@27: 
sl@29:         }
sl@0: 
sl@29:         /// <summary>
sl@29:         /// 
sl@29:         /// </summary>
sl@29:         /// <param name="aSender"></param>
sl@29:         /// <param name="aHidEvent"></param>
sl@29:         void HandleHidEvent(object aSender, Hid.HidEvent aHidEvent)
sl@29:         {
sl@27:             HidUsageHandler usagePageHandler = null;
sl@27: 
sl@27:             //Check if this an MCE remote HID message
sl@30:             if (aHidEvent.UsagePage == (ushort)Hid.UsagePage.WindowsMediaCenterRemoteControl && aHidEvent.UsageCollection == (ushort)Hid.UsageCollectionWindowsMediaCenter.WindowsMediaCenterRemoteControl)
sl@10:             {
sl@27:                 usagePageHandler = HidMceRemoteHandler;
sl@27:             }
sl@27:             //Check if this is a consumer control HID message
sl@29:             else if (aHidEvent.UsagePage == (ushort)Hid.UsagePage.Consumer && aHidEvent.UsageCollection == (ushort)Hid.UsageCollectionConsumer.ConsumerControl)
sl@27:             {
sl@27:                 usagePageHandler = HidConsumerDeviceHandler;
sl@27:             }
sl@27:             //Unknown HID message
sl@27:             else
sl@27:             {
sl@27:                 Debug.WriteLine("Unknown HID message.");
sl@27:                 return;
sl@27:             }
sl@6: 
sl@29:             foreach (ushort usage in aHidEvent.Usages)
sl@27:             {
sl@27:                 usagePageHandler(usage);
sl@27:             }
sl@27:         }
sl@27:     }
sl@27: }
sl@23: