unit uMain;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, OleCtrls, MSCommLib_TLB, ComCtrls, IdBaseComponent,
  IdComponent, IdUDPBase, IdUDPServer,IdSocketHandle, CoolTrayIcon, Menus;

type
  TForm1 = class(TForm)
    PageControl1: TPageControl;
    TabSheet1: TTabSheet;
    TabSheet2: TTabSheet;
    Label1: TLabel;
    btnExe: TButton;
    btnSoundUp: TButton;
    btnSoundDown: TButton;
    btnMuteOn: TButton;
    btnMuteOff: TButton;
    cmbInput: TComboBox;
    MSComm1: TMSComm;
    btnStop: TButton;
    m1: TMemo;
    IdUDPServer1: TIdUDPServer;
    m2: TMemo;
    CoolTrayIcon1: TCoolTrayIcon;
    PopupMenu1: TPopupMenu;
    menuShow: TMenuItem;
    menuExit: TMenuItem;
    procedure btnExeClick(Sender: TObject);
    procedure btnSoundUpClick(Sender: TObject);
    procedure btnSoundDownClick(Sender: TObject);
    procedure btnMuteOnClick(Sender: TObject);
    procedure btnMuteOffClick(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure MSComm1Comm(Sender: TObject);
    procedure btnStopClick(Sender: TObject);
    procedure IdUDPServer1UDPRead(Sender: TObject; AData: TStream;
      ABinding: TIdSocketHandle);
    procedure menuShowClick(Sender: TObject);
    procedure menuExitClick(Sender: TObject);
    procedure CoolTrayIcon1DblClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
    bzw:boolean;

    procedure OutputToCom(pi_oleData:oleVariant);
    procedure SwitchInput(pi_char:Char);
    procedure IncSound();
    procedure DecSound();
    procedure StopChangeSound();
    procedure MuteON();
    procedure MuteOFF();
    procedure Proccess(pi_sStr:String);
    procedure Log(pi_sStr:String);

  public
    { Public declarations }
    procedure ApplicationEventsException(Sender: TObject; E: Exception);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.btnExeClick(Sender: TObject);
begin
  SwitchInput(cmbInput.Text[1]);
end;

procedure TForm1.btnSoundUpClick(Sender: TObject);
begin
    IncSound();
end;

procedure TForm1.btnSoundDownClick(Sender: TObject);
begin
    DecSound();
end;

procedure TForm1.btnMuteOnClick(Sender: TObject);
begin
    MuteON();
end;

procedure TForm1.btnMuteOffClick(Sender: TObject);
begin
    MuteOFF();
end;


procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
    if mscomm1.PortOpen then
    begin
        mscomm1.PortOpen:=false;
    end;
end;

procedure TForm1.MSComm1Comm(Sender: TObject);
begin
   case mscomm1.CommEvent of
       comEvReceive: bzw := true;
   end;
end;

procedure TForm1.btnStopClick(Sender: TObject);

begin
    StopChangeSound();
end;

procedure TForm1.SwitchInput(pi_char: Char);
var
   senddata:array of byte;
begin
    Log('SwitchInput');
    Setlength(senddata,4);
    senddata[0]:=$11;  //要發送的數據
    senddata[1]:=$80;
    senddata[3]:=$B1;
    case pi_char of
    'A':
      senddata[2]:=$20;
    'B':
      senddata[2]:=$21;
    'C':
      senddata[2]:=$22;
    'D':
      senddata[2]:=$23;
    end;
    OutputToCom(senddata);
end;

procedure TForm1.Log(pi_sStr: String);
begin
    if m1.Lines.Count>1024 then
    begin
        m1.Lines.Clear;
    end;
    m1.Lines.Insert(0,DateTimeToStr(now)+':'+pi_sStr);
end;

procedure TForm1.OutputToCom(pi_oleData: oleVariant);
begin
    if not MSComm1.PortOpen then
    begin
       MSComm1.PortOpen := true;
       Log('打開端口成功！');
    end;


    if MSComm1.PortOpen  then
    begin
        msComm1.Output := pi_oleData ;
        Log('執行命令成功！');
    end
    else
    begin
        Log('執行命令失敗');
    end;
end;

procedure TForm1.IncSound;
var
   senddata:array of BYTE;
begin
    Log('Inc Sound');
    SetLength(senddata,4);
    senddata[0]:=($11);                          //要發送的數據
    senddata[1]:=($82);
    senddata[2]:=($21);
    senddata[3]:=($B1);
    OutputToCom(senddata);
    Sleep(500);
    StopChangeSound();
end;

procedure TForm1.StopChangeSound;
var
   senddata:array of BYTE;
begin
    SetLength(senddata,4);
    senddata[0]:=($11);                          //要發送的數據
    senddata[1]:=($82);
    senddata[2]:=($22);
    senddata[3]:=($B1);
    OutputToCom(senddata);
end;

procedure TForm1.DecSound;
var
   senddata:array of BYTE;
begin
    Log('DecSound');
    SetLength(senddata,4);
    senddata[0]:=($11);                          //要發送的數據
    senddata[1]:=($82);
    senddata[2]:=($20);
    senddata[3]:=($B1);
    OutputToCom(senddata);
    Sleep(500);
    StopChangeSound();    
end;

procedure TForm1.MuteON;
var
   senddata:array of BYTE;
begin
    Log('MuteON');
    SetLength(senddata,4);
    senddata[0]:=($11);                          //要發送的數據
    senddata[1]:=($81);
    senddata[2]:=($20);
    senddata[3]:=($B1);
    OutputToCom(senddata);
end;

procedure TForm1.MuteOFF;
var
   senddata:array of BYTE;
begin
    Log('MuteOFF');
    SetLength(senddata,4);
    senddata[0]:=($11);                          //要發送的數據
    senddata[1]:=($81);
    senddata[2]:=($21);
    senddata[3]:=($B1);
    OutputToCom(senddata);
end;

procedure TForm1.IdUDPServer1UDPRead(Sender: TObject; AData: TStream;
  ABinding: TIdSocketHandle);
begin
    m2.Lines.LoadFromStream(AData);
    Proccess(m2.Lines.Text);
end;

procedure TForm1.Proccess(pi_sStr: String);
begin
    Log('收到_'+pi_sStr);
    //字串為5種格式  （SEL_A，VOL_UP，VOL_DOWN，MUTE_OFF，MUTE_ON）
    if Pos('VOL_UP',pi_sStr)>0 then
    begin
        IncSound();
        exit;
    end;

    if Pos('VOL_DOWN',pi_sStr)>0 then
    begin
        DecSound();
        exit;
    end;

    if Pos('MUTE_OFF',pi_sStr)>0 then
    begin
        MuteOFF();
        exit;
    end;

    if Pos('MUTE_ON',pi_sStr)>0 then
    begin
        MuteON();
        exit;
    end;

    if Pos('SEL_',pi_sStr)>0 then
    begin
        SwitchInput(pi_sStr[5]);
        exit;
    end;
    Log('非法命令！');
end;

procedure TForm1.ApplicationEventsException(Sender: TObject; E: Exception);
begin
    log(e.Message);
    if MSComm1.PortOpen then
    begin
        MSComm1.PortOpen := false;
    end;
end;

procedure TForm1.menuShowClick(Sender: TObject);
begin
    CoolTrayIcon1.ShowMainForm;
end;

procedure TForm1.menuExitClick(Sender: TObject);
begin
    Application.Terminate;
end;

procedure TForm1.CoolTrayIcon1DblClick(Sender: TObject);
begin
    CoolTrayIcon1.ShowMainForm;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  mscomm1.CommPort :=1;                    //指定端口
  mscomm1.Settings := '9600,o,8,1';        //其它參數
  mscomm1.InBufferSize := 1024;             //接收緩沖區
  mscomm1.OutBufferSize := 1024;            //發送緩沖區
  mscomm1.InputMode :=comInputModeBinary;  //接收模式
  mscomm1.InputLen := 1;                    //一次讀取所有數據
  mscomm1.SThreshold := 0;                  //一次發送所有數據
  mscomm1.InBufferCount := 0;               //清空讀取緩沖區
  mscomm1.OutBufferCount := 0;              //清空發送緩沖區
  MSComm1.RThreshold := 1;               //設置接收多少字節開產生oncomm事件
  mscomm1.PortOpen:=true;                     //打開端口
end;

end.