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using System;
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using System.Windows.Forms;
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using System.Runtime.InteropServices;
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using System.Diagnostics;
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using Hid.UsageTables;
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using Win32;
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namespace Devices.RemoteControl
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{
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public enum InputDevice
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{
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Key,
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Mouse,
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OEM
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}
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public enum RemoteControlButton
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{
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Clear,
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Down,
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Left,
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Digit0,
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Digit1,
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Digit2,
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Digit3,
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Digit4,
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Digit5,
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Digit6,
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Digit7,
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Digit8,
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Digit9,
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Enter,
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Right,
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Up,
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Back,
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ChannelDown,
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ChannelUp,
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FastForward,
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VolumeMute,
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Pause,
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Play,
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PlayPause,
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Record,
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PreviousTrack,
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Rewind,
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NextTrack,
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Stop,
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VolumeDown,
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VolumeUp,
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RecordedTV,
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Guide,
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LiveTV,
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Details,
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DVDMenu,
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DVDAngle,
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DVDAudio,
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DVDSubtitle,
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MyMusic,
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MyPictures,
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MyVideos,
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MyTV,
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OEM1,
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OEM2,
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StandBy,
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TVJump,
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Unknown
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}
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#region RemoteControlEventArgs
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public class RemoteControlEventArgs : EventArgs
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{
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RemoteControlButton _rcb;
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InputDevice _device;
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MceButton iMceButton;
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public RemoteControlEventArgs(RemoteControlButton rcb, InputDevice device)
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{
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iMceButton = MceButton.Null;
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_rcb = rcb;
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_device = device;
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}
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public RemoteControlEventArgs(MceButton mce, InputDevice device)
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{
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iMceButton = mce;
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_rcb = RemoteControlButton.Unknown;
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_device = device;
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}
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public RemoteControlEventArgs()
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{
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iMceButton = MceButton.Null;
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_rcb = RemoteControlButton.Unknown;
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_device = InputDevice.Key;
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}
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public RemoteControlButton Button
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{
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get { return _rcb; }
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set { _rcb = value; }
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}
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public MceButton MceButton
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{
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get { return iMceButton; }
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set { iMceButton = value; }
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}
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public InputDevice Device
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{
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get { return _device; }
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set { _device = value; }
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}
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}
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#endregion RemoteControlEventArgs
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public sealed class RemoteControlDevice
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{
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private const int WM_KEYDOWN = 0x0100;
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private const int WM_APPCOMMAND = 0x0319;
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private const int WM_INPUT = 0x00FF;
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private const int APPCOMMAND_BROWSER_BACKWARD = 1;
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private const int APPCOMMAND_VOLUME_MUTE = 8;
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private const int APPCOMMAND_VOLUME_DOWN = 9;
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private const int APPCOMMAND_VOLUME_UP = 10;
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private const int APPCOMMAND_MEDIA_NEXTTRACK = 11;
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private const int APPCOMMAND_MEDIA_PREVIOUSTRACK = 12;
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private const int APPCOMMAND_MEDIA_STOP = 13;
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private const int APPCOMMAND_MEDIA_PLAY_PAUSE = 14;
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private const int APPCOMMAND_MEDIA_PLAY = 46;
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private const int APPCOMMAND_MEDIA_PAUSE = 47;
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private const int APPCOMMAND_MEDIA_RECORD = 48;
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private const int APPCOMMAND_MEDIA_FAST_FORWARD = 49;
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private const int APPCOMMAND_MEDIA_REWIND = 50;
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private const int APPCOMMAND_MEDIA_CHANNEL_UP = 51;
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private const int APPCOMMAND_MEDIA_CHANNEL_DOWN = 52;
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private const int FAPPCOMMAND_MASK = 0xF000;
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private const int FAPPCOMMAND_MOUSE = 0x8000;
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private const int FAPPCOMMAND_KEY = 0;
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private const int FAPPCOMMAND_OEM = 0x1000;
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public delegate void RemoteControlDeviceEventHandler(object sender, RemoteControlEventArgs e);
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public event RemoteControlDeviceEventHandler ButtonPressed;
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//-------------------------------------------------------------
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// constructors
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//-------------------------------------------------------------
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public RemoteControlDevice()
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{
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// Register the input device to receive the commands from the
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// remote device. See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/remote_control.asp
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// for the vendor defined usage page.
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RAWINPUTDEVICE[] rid = new RAWINPUTDEVICE[3];
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rid[0].usUsagePage = 0xFFBC;
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rid[0].usUsage = 0x88;
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rid[0].dwFlags = 0;
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rid[1].usUsagePage = 0x0C;
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rid[1].usUsage = 0x01;
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rid[1].dwFlags = 0;
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rid[2].usUsagePage = 0x0C;
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rid[2].usUsage = 0x80;
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rid[2].dwFlags = 0;
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if (!Function.RegisterRawInputDevices(rid,
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(uint) rid.Length,
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(uint) Marshal.SizeOf(rid[0]))
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)
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{
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throw new ApplicationException("Failed to register raw input devices.");
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}
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}
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//-------------------------------------------------------------
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// methods
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//-------------------------------------------------------------
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public void ProcessMessage(Message message)
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{
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int param;
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switch (message.Msg)
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{
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case WM_KEYDOWN:
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param = message.WParam.ToInt32();
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ProcessKeyDown(param);
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break;
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case WM_APPCOMMAND:
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param = message.LParam.ToInt32();
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ProcessAppCommand(param);
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break;
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case WM_INPUT:
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ProcessInputCommand(ref message);
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message.Result = new IntPtr(0);
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break;
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}
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}
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//-------------------------------------------------------------
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// methods (helpers)
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//-------------------------------------------------------------
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private void ProcessKeyDown(int param)
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{
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RemoteControlButton rcb = RemoteControlButton.Unknown;
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switch (param)
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{
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case (int) Keys.Escape:
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rcb = RemoteControlButton.Clear;
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break;
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case (int) Keys.Down:
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rcb = RemoteControlButton.Down;
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break;
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case (int) Keys.Left:
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rcb = RemoteControlButton.Left;
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break;
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case (int) Keys.D0:
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rcb = RemoteControlButton.Digit0;
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break;
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case (int) Keys.D1:
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rcb = RemoteControlButton.Digit1;
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break;
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case (int) Keys.D2:
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rcb = RemoteControlButton.Digit2;
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break;
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case (int) Keys.D3:
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rcb = RemoteControlButton.Digit3;
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break;
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case (int) Keys.D4:
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rcb = RemoteControlButton.Digit4;
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break;
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case (int) Keys.D5:
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rcb = RemoteControlButton.Digit5;
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break;
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case (int) Keys.D6:
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rcb = RemoteControlButton.Digit6;
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break;
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case (int) Keys.D7:
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rcb = RemoteControlButton.Digit7;
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break;
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case (int) Keys.D8:
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rcb = RemoteControlButton.Digit8;
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break;
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case (int) Keys.D9:
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rcb = RemoteControlButton.Digit9;
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break;
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case (int) Keys.Enter:
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rcb = RemoteControlButton.Enter;
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break;
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case (int) Keys.Right:
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273 |
rcb = RemoteControlButton.Right;
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274 |
break;
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case (int) Keys.Up:
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276 |
rcb = RemoteControlButton.Up;
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277 |
break;
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278 |
}
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sl@0
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279 |
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280 |
if (this.ButtonPressed != null && rcb != RemoteControlButton.Unknown)
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281 |
this.ButtonPressed(this, new RemoteControlEventArgs(rcb, GetDevice(param)));
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|
282 |
}
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sl@0
|
283 |
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sl@0
|
284 |
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sl@0
|
285 |
private void ProcessAppCommand(int param)
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|
286 |
{
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|
287 |
RemoteControlButton rcb = RemoteControlButton.Unknown;
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sl@0
|
288 |
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|
289 |
int cmd = (int) (((ushort) (param >> 16)) & ~FAPPCOMMAND_MASK);
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sl@0
|
290 |
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|
291 |
switch (cmd)
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|
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{
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293 |
case APPCOMMAND_BROWSER_BACKWARD:
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|
294 |
rcb = RemoteControlButton.Back;
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sl@0
|
295 |
break;
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|
296 |
case APPCOMMAND_MEDIA_CHANNEL_DOWN:
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sl@0
|
297 |
rcb = RemoteControlButton.ChannelDown;
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sl@0
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298 |
break;
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|
299 |
case APPCOMMAND_MEDIA_CHANNEL_UP:
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|
300 |
rcb = RemoteControlButton.ChannelUp;
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301 |
break;
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302 |
case APPCOMMAND_MEDIA_FAST_FORWARD:
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|
303 |
rcb = RemoteControlButton.FastForward;
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sl@0
|
304 |
break;
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sl@0
|
305 |
case APPCOMMAND_VOLUME_MUTE:
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sl@0
|
306 |
rcb = RemoteControlButton.VolumeMute;
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sl@0
|
307 |
break;
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sl@0
|
308 |
case APPCOMMAND_MEDIA_PAUSE:
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sl@0
|
309 |
rcb = RemoteControlButton.Pause;
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|
sl@0
|
310 |
break;
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sl@0
|
311 |
case APPCOMMAND_MEDIA_PLAY:
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sl@0
|
312 |
rcb = RemoteControlButton.Play;
|
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sl@0
|
313 |
break;
|
|
sl@0
|
314 |
case APPCOMMAND_MEDIA_PLAY_PAUSE:
|
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sl@0
|
315 |
rcb = RemoteControlButton.PlayPause;
|
|
sl@0
|
316 |
break;
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|
sl@0
|
317 |
case APPCOMMAND_MEDIA_RECORD:
|
|
sl@0
|
318 |
rcb = RemoteControlButton.Record;
|
|
sl@0
|
319 |
break;
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sl@0
|
320 |
case APPCOMMAND_MEDIA_PREVIOUSTRACK:
|
|
sl@0
|
321 |
rcb = RemoteControlButton.PreviousTrack;
|
|
sl@0
|
322 |
break;
|
|
sl@0
|
323 |
case APPCOMMAND_MEDIA_REWIND:
|
|
sl@0
|
324 |
rcb = RemoteControlButton.Rewind;
|
|
sl@0
|
325 |
break;
|
|
sl@0
|
326 |
case APPCOMMAND_MEDIA_NEXTTRACK:
|
|
sl@0
|
327 |
rcb = RemoteControlButton.NextTrack;
|
|
sl@0
|
328 |
break;
|
|
sl@0
|
329 |
case APPCOMMAND_MEDIA_STOP:
|
|
sl@0
|
330 |
rcb = RemoteControlButton.Stop;
|
|
sl@0
|
331 |
break;
|
|
sl@0
|
332 |
case APPCOMMAND_VOLUME_DOWN:
|
|
sl@0
|
333 |
rcb = RemoteControlButton.VolumeDown;
|
|
sl@0
|
334 |
break;
|
|
sl@0
|
335 |
case APPCOMMAND_VOLUME_UP:
|
|
sl@0
|
336 |
rcb = RemoteControlButton.VolumeUp;
|
|
sl@0
|
337 |
break;
|
|
sl@0
|
338 |
}
|
|
sl@0
|
339 |
|
|
sl@0
|
340 |
if (this.ButtonPressed != null && rcb != RemoteControlButton.Unknown)
|
|
sl@0
|
341 |
this.ButtonPressed(this, new RemoteControlEventArgs(rcb, GetDevice(param)));
|
|
sl@0
|
342 |
}
|
|
sl@0
|
343 |
|
|
sl@0
|
344 |
|
|
sl@0
|
345 |
private void ProcessInputCommand(ref Message message)
|
|
sl@0
|
346 |
{
|
|
sl@7
|
347 |
Debug.WriteLine("================WM_INPUT================");
|
|
sl@6
|
348 |
|
|
sl@0
|
349 |
|
|
sl@10
|
350 |
//Declare a pointer
|
|
sl@10
|
351 |
IntPtr rawInputBuffer = IntPtr.Zero;
|
|
sl@0
|
352 |
|
|
sl@10
|
353 |
try
|
|
sl@10
|
354 |
{
|
|
sl@10
|
355 |
//Fetch raw input
|
|
sl@11
|
356 |
RAWINPUT rawInput = new RAWINPUT();
|
|
sl@11
|
357 |
if (!RawInput.GetRawInputData(message.LParam, ref rawInput, ref rawInputBuffer))
|
|
sl@6
|
358 |
{
|
|
sl@6
|
359 |
return;
|
|
sl@6
|
360 |
}
|
|
sl@6
|
361 |
|
|
sl@10
|
362 |
//Fetch device info
|
|
sl@10
|
363 |
RID_DEVICE_INFO deviceInfo = new RID_DEVICE_INFO();
|
|
sl@11
|
364 |
if (!RawInput.GetDeviceInfo(rawInput.header.hDevice, ref deviceInfo))
|
|
sl@10
|
365 |
{
|
|
sl@10
|
366 |
return;
|
|
sl@10
|
367 |
}
|
|
sl@11
|
368 |
|
|
sl@6
|
369 |
|
|
sl@11
|
370 |
if (rawInput.header.dwType == Const.RIM_TYPEHID) //Check that our raw input is HID
|
|
sl@6
|
371 |
{
|
|
sl@11
|
372 |
Debug.WriteLine("WM_INPUT source device is HID.");
|
|
sl@11
|
373 |
//Get Usage Page and Usage
|
|
sl@11
|
374 |
Debug.WriteLine("Usage Page: 0x" + deviceInfo.hid.usUsagePage.ToString("X4") + " Usage: 0x" + deviceInfo.hid.usUsage.ToString("X4"));
|
|
sl@10
|
375 |
|
|
sl@6
|
376 |
//Make sure both usage page and usage are matching MCE remote
|
|
sl@11
|
377 |
//TODO: handle more that just MCE usage page.
|
|
sl@8
|
378 |
if (deviceInfo.hid.usUsagePage != (ushort)Hid.UsagePage.MceRemote || deviceInfo.hid.usUsage != (ushort)Hid.UsageId.MceRemoteUsage)
|
|
sl@6
|
379 |
{
|
|
sl@6
|
380 |
Debug.WriteLine("Not MCE remote page and usage.");
|
|
sl@6
|
381 |
return;
|
|
sl@6
|
382 |
}
|
|
sl@0
|
383 |
|
|
sl@11
|
384 |
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
|
385 |
&& rawInput.hid.dwCount > 0)) //Check that we have at least one HID msg
|
|
sl@3
|
386 |
{
|
|
sl@11
|
387 |
return;
|
|
sl@11
|
388 |
}
|
|
sl@11
|
389 |
|
|
sl@11
|
390 |
|
|
sl@11
|
391 |
//Allocate a buffer for one HID input
|
|
sl@11
|
392 |
byte[] hidInput = new byte[rawInput.hid.dwSizeHid];
|
|
sl@11
|
393 |
|
|
sl@11
|
394 |
//For each HID input in our raw input
|
|
sl@11
|
395 |
for (int i = 0; i < rawInput.hid.dwCount; i++)
|
|
sl@11
|
396 |
{
|
|
sl@11
|
397 |
//Compute the address from which to copy our HID input
|
|
sl@11
|
398 |
int hidInputOffset = 0;
|
|
sl@11
|
399 |
unsafe
|
|
sl@3
|
400 |
{
|
|
sl@11
|
401 |
byte* source = (byte*)rawInputBuffer;
|
|
sl@11
|
402 |
source += sizeof(RAWINPUTHEADER) + sizeof(RAWHID) + (rawInput.hid.dwSizeHid * i);
|
|
sl@11
|
403 |
hidInputOffset = (int)source;
|
|
sl@11
|
404 |
}
|
|
sl@11
|
405 |
|
|
sl@11
|
406 |
//Copy HID input into our buffer
|
|
sl@11
|
407 |
Marshal.Copy(new IntPtr(hidInputOffset), hidInput, 0, rawInput.hid.dwSizeHid);
|
|
sl@11
|
408 |
|
|
sl@11
|
409 |
//Print HID raw input in our debug output
|
|
sl@11
|
410 |
string hidDump = "HID " + rawInput.hid.dwCount + "/" + rawInput.hid.dwSizeHid + ":";
|
|
sl@11
|
411 |
foreach (byte b in hidInput)
|
|
sl@11
|
412 |
{
|
|
sl@11
|
413 |
hidDump += b.ToString("X2");
|
|
sl@11
|
414 |
}
|
|
sl@11
|
415 |
Debug.WriteLine(hidDump);
|
|
sl@11
|
416 |
|
|
sl@11
|
417 |
ushort usage = 0;
|
|
sl@11
|
418 |
//hidInput[0] //Not sure what's the meaning of the code at offset 0
|
|
sl@11
|
419 |
if (hidInput.Length == 2)
|
|
sl@11
|
420 |
{
|
|
sl@11
|
421 |
//Single byte code
|
|
sl@11
|
422 |
usage = hidInput[1]; //Get button code
|
|
sl@11
|
423 |
}
|
|
sl@11
|
424 |
else if (hidInput.Length > 2) //Defensive
|
|
sl@11
|
425 |
{
|
|
sl@11
|
426 |
//Assuming double bytes code
|
|
sl@11
|
427 |
usage = (ushort)((hidInput[1] << 2) + hidInput[2]);
|
|
sl@11
|
428 |
}
|
|
sl@11
|
429 |
|
|
sl@11
|
430 |
//
|
|
sl@11
|
431 |
if (Enum.IsDefined(typeof(MceButton), usage) && usage != 0) //Our button is a known MCE button
|
|
sl@11
|
432 |
{
|
|
sl@11
|
433 |
if (this.ButtonPressed != null) //What's that?
|
|
sl@11
|
434 |
{
|
|
sl@11
|
435 |
this.ButtonPressed(this, new RemoteControlEventArgs((MceButton)usage, InputDevice.OEM));
|
|
sl@11
|
436 |
}
|
|
sl@3
|
437 |
}
|
|
sl@3
|
438 |
}
|
|
sl@11
|
439 |
|
|
sl@10
|
440 |
}
|
|
sl@11
|
441 |
else if (rawInput.header.dwType == Const.RIM_TYPEMOUSE)
|
|
sl@10
|
442 |
{
|
|
sl@11
|
443 |
Debug.WriteLine("WM_INPUT source device is Mouse.");
|
|
sl@10
|
444 |
// do mouse handling...
|
|
sl@10
|
445 |
}
|
|
sl@11
|
446 |
else if (rawInput.header.dwType == Const.RIM_TYPEKEYBOARD)
|
|
sl@10
|
447 |
{
|
|
sl@11
|
448 |
Debug.WriteLine("WM_INPUT source device is Keyboard.");
|
|
sl@10
|
449 |
// do keyboard handling...
|
|
sl@11
|
450 |
|
|
sl@10
|
451 |
}
|
|
sl@10
|
452 |
}
|
|
sl@10
|
453 |
finally
|
|
sl@10
|
454 |
{
|
|
sl@10
|
455 |
//Always executed when leaving our try block
|
|
sl@10
|
456 |
Marshal.FreeHGlobal(rawInputBuffer);
|
|
sl@10
|
457 |
}
|
|
sl@0
|
458 |
}
|
|
sl@0
|
459 |
|
|
sl@0
|
460 |
|
|
sl@0
|
461 |
private InputDevice GetDevice(int param)
|
|
sl@0
|
462 |
{
|
|
sl@0
|
463 |
InputDevice inputDevice;
|
|
sl@0
|
464 |
|
|
sl@0
|
465 |
switch ((int) (((ushort) (param >> 16)) & FAPPCOMMAND_MASK))
|
|
sl@0
|
466 |
{
|
|
sl@0
|
467 |
case FAPPCOMMAND_OEM:
|
|
sl@0
|
468 |
inputDevice = InputDevice.OEM;
|
|
sl@0
|
469 |
break;
|
|
sl@0
|
470 |
case FAPPCOMMAND_MOUSE:
|
|
sl@0
|
471 |
inputDevice = InputDevice.Mouse;
|
|
sl@0
|
472 |
break;
|
|
sl@0
|
473 |
default:
|
|
sl@0
|
474 |
inputDevice = InputDevice.Key;
|
|
sl@0
|
475 |
break;
|
|
sl@0
|
476 |
}
|
|
sl@0
|
477 |
|
|
sl@0
|
478 |
return inputDevice;
|
|
sl@0
|
479 |
}
|
|
sl@0
|
480 |
}
|
|
sl@0
|
481 |
}
|