SharpLibHid: RemoteControlDevice.cs@928c966fcf42

     1 using System;

     2 using System.Windows.Forms;

     3 using System.Runtime.InteropServices;

     4 using System.Diagnostics;

     5 using System.Text;

     6 using Microsoft.Win32.SafeHandles;

     8 using Hid.UsageTables;

     9 using Win32;

    13 namespace Devices.RemoteControl

    14 {

    16     public enum InputDevice

    17     {

    18         Key,

    19         Mouse,

    20         OEM

    21     }

    24     public enum RemoteControlButton

    25     {

    26         Clear,

    27         Down,

    28         Left,

    29         Digit0,

    30         Digit1,

    31         Digit2,

    32         Digit3,

    33         Digit4,

    34         Digit5,

    35         Digit6,

    36         Digit7,

    37         Digit8,

    38         Digit9,

    39         Enter,

    40         Right,

    41         Up,

    43         Back,

    44         ChannelDown,

    45         ChannelUp,

    46         FastForward,

    47         VolumeMute,

    48         Pause,

    49         Play,

    50         PlayPause,

    51         Record,

    52         PreviousTrack,

    53         Rewind,

    54         NextTrack,

    55         Stop,

    56         VolumeDown,

    57         VolumeUp,

    59         RecordedTV,

    60         Guide,

    61         LiveTV,

    62         MoreInfo,

    63         Print,

    64         DVDMenu,

    65         DVDAngle,

    66         DVDAudio,

    67         DVDSubtitle,

    68         MyMusic,

    69         MyPictures,

    70         MyVideos,

    71         MyTV,

    72         OEM1,

    73         OEM2,

    74         StandBy,

    75         TVJump,

    77         Unknown

    78     }

    81     #region RemoteControlEventArgs

    83     public class RemoteControlEventArgs : EventArgs

    84     {

    85         RemoteControlButton _rcb;

    86         InputDevice _device;

    87         WindowsMediaCenterRemoteControl iMceButton;

    88         ConsumerControl iConsumerControl;

    90         public RemoteControlEventArgs(RemoteControlButton rcb, InputDevice device)

    91         {

    92             SetNullButtons();

    93             //

    94             _rcb = rcb;

    95             _device = device;

    96         }

    98         public RemoteControlEventArgs(ConsumerControl aConsumerControl, InputDevice device)

    99         {

   100             SetNullButtons();

   101             //

   102             iConsumerControl = aConsumerControl;

   103             _device = device;

   104         }

   107         public RemoteControlEventArgs(WindowsMediaCenterRemoteControl mce, InputDevice device)

   108         {

   109             SetNullButtons();

   110             //

   111             iMceButton = mce;

   112             _device = device;

   113         }

   115         private void SetNullButtons()

   116         {

   117             iConsumerControl = ConsumerControl.Null;

   118             iMceButton = WindowsMediaCenterRemoteControl.Null;

   119             _rcb = RemoteControlButton.Unknown;

   120         }

   122         public RemoteControlEventArgs()

   123         {

   124             iMceButton = WindowsMediaCenterRemoteControl.Null;

   125             _rcb = RemoteControlButton.Unknown;

   126             _device = InputDevice.Key;

   127         }

   129         public RemoteControlButton Button

   130         {

   131             get { return _rcb; }

   132             set { _rcb = value; }

   133         }

   135         public WindowsMediaCenterRemoteControl MceButton

   136         {

   137             get { return iMceButton; }

   138             set { iMceButton = value; }

   139         }

   141         public ConsumerControl ConsumerControl

   142         {

   143             get { return iConsumerControl; }

   144             set { iConsumerControl = value; }

   145         }

   147         public InputDevice Device

   148         {

   149             get { return _device; }

   150             set { _device = value; }

   151         }

   152     }

   154     #endregion RemoteControlEventArgs

   157     public sealed class RemoteControlDevice

   158     {

   159         public delegate bool RemoteControlDeviceEventHandler(object sender, RemoteControlEventArgs e);

   160         public event RemoteControlDeviceEventHandler ButtonPressed;

   162         /// <summary>

   163         /// Return true if the usage was processed.

   164         /// </summary>

   165         /// <param name="aUsage"></param>

   166         /// <returns></returns>

   167         public delegate bool HidUsageHandler(ushort aUsage);

   169         Hid.HidHandler iHidHandler;

   172         //-------------------------------------------------------------

   173         // constructors

   174         //-------------------------------------------------------------

   176         public RemoteControlDevice(IntPtr aHWND)

   177         {

   178             // Register the input device to receive the commands from the

   179             // remote device. See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/remote_control.asp

   180             // for the vendor defined usage page.

   182             RAWINPUTDEVICE[] rid = new RAWINPUTDEVICE[4];

   184             int i = 0;

   185             rid[i].usUsagePage = (ushort)Hid.UsagePage.WindowsMediaCenterRemoteControl;

   186             rid[i].usUsage = (ushort)Hid.UsageCollectionWindowsMediaCenter.WindowsMediaCenterRemoteControl;

   187             rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

   188             rid[i].hwndTarget = aHWND;

   190             i++;

   191             rid[i].usUsagePage = (ushort)Hid.UsagePage.Consumer;

   192             rid[i].usUsage = (ushort)Hid.UsageCollectionConsumer.ConsumerControl;

   193             rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

   194             rid[i].hwndTarget = aHWND;

   196             i++;

   197             rid[i].usUsagePage = (ushort)Hid.UsagePage.Consumer;

   198             rid[i].usUsage = (ushort)Hid.UsageCollectionConsumer.Selection;

   199             rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

   200             rid[i].hwndTarget = aHWND;

   202             i++;

   203             rid[i].usUsagePage = (ushort)Hid.UsagePage.GenericDesktopControls;

   204             rid[i].usUsage = (ushort)Hid.UsageCollectionGenericDesktop.SystemControl;

   205             rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

   206             rid[i].hwndTarget = aHWND;

   208             //i++;

   209             //rid[i].usUsagePage = (ushort)Hid.UsagePage.GenericDesktopControls;

   210             //rid[i].usUsage = (ushort)Hid.UsageCollectionGenericDesktop.Keyboard;

   211             //rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

   212             //rid[i].hwndTarget = aHWND;

   214             //i++;

   215             //rid[i].usUsagePage = (ushort)Hid.UsagePage.GenericDesktopControls;

   216             //rid[i].usUsage = (ushort)Hid.UsageCollectionGenericDesktop.Mouse;

   217             //rid[i].dwFlags = Const.RIDEV_EXINPUTSINK;

   218             //rid[i].hwndTarget = aHWND;

   221             iHidHandler = new Hid.HidHandler(rid);

   222             if (!iHidHandler.IsRegistered)

   223             {

   224                 Debug.WriteLine("Failed to register raw input devices: " + Marshal.GetLastWin32Error().ToString());

   225             }

   226             iHidHandler.OnHidEvent += HandleHidEvent;

   227         }

   230         //-------------------------------------------------------------

   231         // methods

   232         //-------------------------------------------------------------

   234         public void ProcessMessage(Message message)

   235         {

   236             switch (message.Msg)

   237             {

   238                 case Const.WM_KEYDOWN:

   239                     ProcessKeyDown(message.WParam);

   240                     break;

   241                 case Const.WM_INPUT:

   242                     //Returning zero means we processed that message.

   243                     message.Result = new IntPtr(0);

   244                     ProcessInputCommand(ref message);

   245                     break;

   246             }

   248         }

   251         //-------------------------------------------------------------

   252         // methods (helpers)

   253         //-------------------------------------------------------------

   255         private void ProcessKeyDown(IntPtr wParam)

   256         {

   257             RemoteControlButton rcb = RemoteControlButton.Unknown;

   259             switch (wParam.ToInt32())

   260             {

   261                 case (int)Keys.Escape:

   262                     rcb = RemoteControlButton.Clear;

   263                     break;

   264                 case (int)Keys.Up:

   265                     rcb = RemoteControlButton.Up;

   266                     break;

   267                 case (int)Keys.Down:

   268                     rcb = RemoteControlButton.Down;

   269                     break;

   270                 case (int)Keys.Left:

   271                     rcb = RemoteControlButton.Left;

   272                     break;

   273                 case (int)Keys.Right:

   274                     rcb = RemoteControlButton.Right;

   275                     break;

   276                 case (int)Keys.Enter:

   277                     rcb = RemoteControlButton.Enter;

   278                     break;

   279                 case (int)Keys.D0:

   280                     rcb = RemoteControlButton.Digit0;

   281                     break;

   282                 case (int)Keys.D1:

   283                     rcb = RemoteControlButton.Digit1;

   284                     break;

   285                 case (int)Keys.D2:

   286                     rcb = RemoteControlButton.Digit2;

   287                     break;

   288                 case (int)Keys.D3:

   289                     rcb = RemoteControlButton.Digit3;

   290                     break;

   291                 case (int)Keys.D4:

   292                     rcb = RemoteControlButton.Digit4;

   293                     break;

   294                 case (int)Keys.D5:

   295                     rcb = RemoteControlButton.Digit5;

   296                     break;

   297                 case (int)Keys.D6:

   298                     rcb = RemoteControlButton.Digit6;

   299                     break;

   300                 case (int)Keys.D7:

   301                     rcb = RemoteControlButton.Digit7;

   302                     break;

   303                 case (int)Keys.D8:

   304                     rcb = RemoteControlButton.Digit8;

   305                     break;

   306                 case (int)Keys.D9:

   307                     rcb = RemoteControlButton.Digit9;

   308                     break;

   309             }

   311             if (this.ButtonPressed != null && rcb != RemoteControlButton.Unknown)

   312             {

   313                 Debug.WriteLine("KeyDown: " + rcb.ToString());

   314                 this.ButtonPressed(this, new RemoteControlEventArgs(rcb, InputDevice.Key));

   315             }

   316         }

   319         /// <summary>

   320         ///

   321         /// </summary>

   322         /// <param name="aUsage"></param>

   323         private bool HidConsumerDeviceHandler(ushort aUsage)

   324         {

   325             if (aUsage == 0)

   326             {

   327                 //Just skip those

   328                 return false;

   329             }

   331             if (Enum.IsDefined(typeof(ConsumerControl), aUsage) && aUsage != 0) //Our button is a known consumer control

   332             {

   333                 if (this.ButtonPressed != null)

   334                 {

   335                     return this.ButtonPressed(this, new RemoteControlEventArgs((ConsumerControl)aUsage, InputDevice.OEM));

   336                 }

   337                 return false;

   338             }

   339             else

   340             {

   341                 Debug.WriteLine("Unknown Consumer Control!");

   342                 return false;

   343             }

   344         }

   346         /// <summary>

   347         ///

   348         /// </summary>

   349         /// <param name="aUsage"></param>

   350         private bool HidMceRemoteHandler(ushort aUsage)

   351         {

   352             if (aUsage == 0)

   353             {

   354                 //Just skip those

   355                 return false;

   356             }

   359             if (Enum.IsDefined(typeof(WindowsMediaCenterRemoteControl), aUsage) && aUsage != 0) //Our button is a known MCE button

   360             {

   361                 if (this.ButtonPressed != null)

   362                 {

   363                     return this.ButtonPressed(this, new RemoteControlEventArgs((WindowsMediaCenterRemoteControl)aUsage, InputDevice.OEM));

   364                 }

   365                 return false;

   366             }

   367             else

   368             {

   369                 Debug.WriteLine("Unknown MCE button!");

   370                 return false;

   371             }

   372         }

   374         /// <summary>

   375         ///

   376         /// </summary>

   377         /// <param name="message"></param>

   378         private void ProcessInputCommand(ref Message message)

   379         {

   380             //We received a WM_INPUT message

   381             Debug.WriteLine("================WM_INPUT================");

   383             iHidHandler.ProcessInput(message);

   385         }

   387         /// <summary>

   388         ///

   389         /// </summary>

   390         /// <param name="aSender"></param>

   391         /// <param name="aHidEvent"></param>

   392         void HandleHidEvent(object aSender, Hid.HidEvent aHidEvent)

   393         {

   394             HidUsageHandler usagePageHandler = null;

   396             //Check if this an MCE remote HID message

   397             if (aHidEvent.UsagePage == (ushort)Hid.UsagePage.WindowsMediaCenterRemoteControl && aHidEvent.UsageCollection == (ushort)Hid.UsageCollectionWindowsMediaCenter.WindowsMediaCenterRemoteControl)

   398             {

   399                 usagePageHandler = HidMceRemoteHandler;

   400             }

   401             //Check if this is a consumer control HID message

   402             else if (aHidEvent.UsagePage == (ushort)Hid.UsagePage.Consumer && aHidEvent.UsageCollection == (ushort)Hid.UsageCollectionConsumer.ConsumerControl)

   403             {

   404                 usagePageHandler = HidConsumerDeviceHandler;

   405             }

   406             //Unknown HID message

   407             else

   408             {

   409                 Debug.WriteLine("Unknown HID message.");

   410                 return;

   411             }

   413             foreach (ushort usage in aHidEvent.Usages)

   414             {

   415                 usagePageHandler(usage);

   416             }

   417         }

   418     }

   419 }

author	sl
	Fri, 19 Dec 2014 21:07:15 +0100
changeset 35	928c966fcf42
parent 29	7679a5ab194b
child 40	b3e177062849
permissions	-rw-r--r--