{*********************************************************************************
 *                                                                               *
 * Copyright (C) 2003 Zhanmo1                                                      *
 *                                                                               *
 *                                                                               *
 * This program is free software; you can redistribute it and/or                 *
 * modify it under the terms of the GNU General Public License                   *
 * as published by the Free Software Foundation; either version 2                *
 * of the License, or (at your option) any later version.                        *
 *                                                                               *
 * This program is distributed in the hope that it will be useful,               *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of                *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                 *
 * GNU General Public License for more details.                                  *
 *                                                                               *
 * You should have received a copy of the GNU General Public License             *
 * along with this program; if not, write to the Free Software                   *
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.    *
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html                *
 *                                                                               *
 *********************************************************************************}

unit UMain;

interface

uses
  Forms, Windows, Variants, Classes, Controls, ExtCtrls, StdCtrls, Dialogs,
  sysutils, ComCtrls, Menus, Mask, Buttons;

{**********************     Multidec API   ************************************}
const MAX_CA_SYSTEMS      = 48;
const MAX_PID_IDS         = 32;
const MDAPI_GET_TRANSPONDER     =   $01020000;
const MDAPI_SET_TRANSPONDER     =   $01020001;
const MDAPI_GET_PROGRAMM        =   $01020010;
const MDAPI_SET_PROGRAMM        =   $01020011;
const MDAPI_RESCAN_PROGRAMM     =   $01020012;
const MDAPI_SAVE_PROGRAMM       =   $01020013;
const MDAPI_GET_PROGRAMM_NUMMER =   $01020014;
const MDAPI_SET_PROGRAMM_NUMMER =   $01020015;
const MDAPI_START_FILTER        =   $01020020;
const MDAPI_STOP_FILTER         =   $01020021;
const MDAPI_SCAN_CURRENT_TP     =   $01020030;
const MDAPI_SCAN_CURRENT_CAT    =   $01020031;
const MDAPI_START_OSD           =   $01020040;
const MDAPI_OSD_DRAWBLOCK       =   $01020041;
const MDAPI_OSD_SETFONT         =   $01020042;
const MDAPI_OSD_TEXT            =   $01020043;
const MDAPI_SEND_OSD_KEY        =   $01020044;
const MDAPI_STOP_OSD            =   $01020049;
const MDAPI_DVB_COMMAND         =   $01020060;

type

  TSTART_FILTER = record
	  DLL_ID,
    Filter_ID,
    Pid:Word;
	  Name:array[00..31] of char;
	  Irq_Call_Adresse: pointer;
	  Running_ID:integer;
  end;

  TPIDFilters = record
    FilterName: Array[0..5-1] of Char;
    FilterId: Byte;
    PID: Word;
  end;

  TCA_System82 = record
    CA_Typ:Word;
    ECM:Word;
    EMM:Word;
    Provider_Id:DWord;
  end;

  TProgramm82 = record
    Name: Array[0..29] of char;
    Anbieter:Array[0..29] of char;
    Land:Array[0..29] of char;
    freq: DWord;
    Typ: Byte;
    volt: Byte;
    afc: Byte;
    diseqc: Byte;
    srate:Word;
    qam: Word;
    fec: Word;
    norm: Byte;
    tp_id: Word;
    Video_pid: Word;
    Audio_pid: Word;
    TeleText_pid:Word;
    PMT_pid:Word;
    PCR_pid:Word;
    ECM_PID:Word;
    SID_pid:Word;
    AC3_pid:Word;
    TVType: Byte;
    ServiceTyp: Byte;
    CA_ID: Byte;
    Temp_Audio:Word;
    Filteranzahl:Word;
    Filters: Array[00..(MAX_PID_IDS-1)] of TPIDFilters;
    CA_Anzahl:Word;
    CA_System82:array[0..(MAX_CA_SYSTEMS-1)] of TCA_System82;
    CA_Land: Array[0..4] of char;
    Merker:Byte;
    Link_TP:Word;
    Link_SID:Word;
    Dynamisch:Byte;
    Extern_Buffer:array[00..15] of char;
  end;

  procedure On_Send_Dll_ID_Name(var Name:array of char );cdecl;
  procedure On_Start(MDInstance:LongWord; MDWnd: HWND; Log_Set: Bool; DLL_ID: Integer; HotKey: PChar;  Vers: PChar; var ReturnValue: Integer); cdecl;
  procedure On_Menu_Select(MenuID:word );cdecl;
  procedure On_Channel_Change( CurrentProgramm :TProgramm82 );cdecl;
  procedure On_Filter_Close(FilterOffset : Word);cdecl;
  procedure On_Exit(MDInstance:LongWord;MDWnd:LongWord;Log_Set:BOOL);cdecl;
  procedure On_Hot_Key();cdecl;
  procedure On_Osd_Key( Key:char  );cdecl;
  procedure On_Rec_Play(Mode:integer);cdecl;

  exports On_Send_Dll_ID_Name name 'On_Send_Dll_ID_Name';
  exports On_Start name 'On_Start';
  exports On_Menu_Select name 'On_Menu_Select';
  exports On_Channel_Change name 'On_Channel_Change';
  exports On_Filter_Close name 'On_Filter_Close';
  exports On_Exit name 'On_Exit';
  exports On_Hot_Key name 'On_Hot_Key';
  exports On_Osd_Key name 'On_Osd_Key';
  exports On_Rec_Play name 'On_Rec_Play';

  procedure MD_Filter(MyFilter : integer; BufLen :integer; Buf:PByteArray);cdecl;
  procedure add_Md_Filter(Pid:word);

  var
    CurrentProgramm1:TProgramm82;
    Filter:TSTART_FILTER;
    MultiDecInstance : LongWord;
    MultiDecWindow: HWND;
    MultiDec_DLL_ID: integer;
{******************************************************************************}

type
  TForm1 = class(TForm)
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    Panel1: TPanel;
    Label1: TLabel;
    MaskEdit1: TMaskEdit;
    LabelCh: TLabel;
    BitBtn3: TBitBtn;
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure BitBtn1Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
    procedure BitBtn3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var  form1: TForm1;

implementation

uses StrUtils, DateUtils, messages, IniFiles;

{$R *.dfm}

const
  PLUGIN_NAME='BISS';
  endl=#$0D+#$0A;

var
  Running:boolean=false;
  AppPath,provname,channame, BISSKEY:string;
  TZ: _TIME_ZONE_INFORMATION;
  mythread:TThread;
  IniFile:TIniFile;
  SelLng:byte=1;

  OldDW1,OldDW2,Wordkey,Worddata,oldtypemk : string;
  SAA_COMMAND : array [00..15] of Byte=(7,0,$10,1,5,0,0,0,0,0,0,0,0,0,0,0);



procedure InitVars;
begin
    form1.Caption:='BISS';
end;

procedure InitPlugin;
var aux,f:integer;NewItem:TMenuItem;s:string;
begin
  mythread:=TThread.Create(True);
  mythread.Priority := tpLower;
  mythread.Resume;
  AppPath:=extractfilepath(Application.ExeName);
  IniFile:=TIniFile.Create(AppPath+'BISS.ini');
  BISSKEY:=IniFile.ReadString('BISSKEYS','Default Channel','111111222222');
end;

procedure SetBISSKey;cdecl;
var i,j: integer;
    Worddata2,Worddata1: String;
    CWSAAG1,CWSAAG2,CWSAA1,CWSAA2 : array [00..07] of Byte;
begin
   if true then begin
      Worddata1 := copy(BISSKEY,1,6)+'FF'+copy(BISSKEY,7,6)+'FF';
      Worddata2 := Worddata1;
      for i:=0 to 7 do CWSAA1[i]:=strtoint('$'+Copy(Worddata1,1+i*2,2));
      for i:=0 to 7 do CWSAA2[i]:=strtoint('$'+Copy(Worddata2,1+i*2,2));
      OldDW1:=Worddata1;OldDW2:=Worddata2;
      CWSAA1[3]:=(CWSAA1[0]+CWSAA1[1]+CWSAA1[2])and $FF;
      CWSAA1[7]:=(CWSAA1[4]+CWSAA1[5]+CWSAA1[6])and $FF;
      CWSAA2[3]:=(CWSAA2[0]+CWSAA2[1]+CWSAA2[2])and $FF;
      CWSAA2[7]:=(CWSAA2[4]+CWSAA2[5]+CWSAA2[6])and $FF;
      i:=0;j:=1;
      while (i<8) do begin CWSAAG1[j]:=CWSAA1[i];CWSAAG2[j]:=CWSAA2[i];j:=j+2;i:=i+2;end;
      i:=1;j:=0;
      while (i<8)do begin CWSAAG1[j]:=CWSAA1[i];CWSAAG2[j]:=CWSAA2[i];j:=j+2;i:=i+2;end;
      for i:=0 to 7 do SAA_COMMAND[i+8]:=CWSAAG1[i];
      SAA_COMMAND[6]:=0; //  DW1
      SendMessage(MultiDecWindow,WM_USER,MDAPI_DVB_COMMAND,(LongWord(@SAA_COMMAND)));
      for i:=0 to 7 do SAA_COMMAND[i+8]:=CWSAAG2[i];
      SAA_COMMAND[6]:=1; //  DW2
      SendMessage(MultiDecWindow,WM_USER,MDAPI_DVB_COMMAND,(LongWord(@SAA_COMMAND)));
      end;
end;



{************************** Multidec implementation ***************************}
procedure MD_Filter(MyFilter : integer; BufLen :integer; Buf:PByteArray);cdecl;
begin
end;

procedure add_MD_Filter(Pid:word);
begin
end;

procedure On_Filter_Close(FilterOffset : Word);cdecl;
begin
end;

procedure On_Osd_Key( Key:char  );cdecl;
begin
end;

procedure On_Rec_Play(Mode:integer);cdecl;
begin
end;

procedure On_Channel_Change( CurrentProgramm :TProgramm82 );cdecl;
begin
  CurrentProgramm1 := CurrentProgramm;
  if channame<>CurrentProgramm1.Name then begin
     channame := trim(CurrentProgramm1.Name);
     if channame='' then channame:='_none_';
     BISSKEY :=IniFile.ReadString('BISSKEYS',channame,'_none_');
     if BISSKEY<>'_none_' then SetBISSKey;
     end;
end;

procedure On_Hot_Key();cdecl;
begin
end;

procedure On_Menu_Select(MenuID:word );cdecl;
begin
  if (MenuID<>41351) then exit;
  running:=true;
  provname := 'BISS';
  InitVars;
  form1.show;
end;

procedure On_Start(MDInstance:LongWord; MDWnd: HWND; Log_Set: Bool; DLL_ID: Integer; HotKey: PChar;  Vers: PChar; var ReturnValue: Integer); cdecl;
begin
  SetWindowLong(form1.Handle, GWL_HWNDPARENT, MDWnd);
  MultiDecInstance:=MDInstance;
  MultiDecWindow:=MDWnd;
  MultiDec_DLL_ID:=DLL_ID;
  Filter.Filter_ID:=0;
  //HotKey:='';
  InitPlugin;
  ReturnValue:=0;
  channame:='Default Channel';
end;

procedure On_Exit(MDInstance:LongWord;MDWnd:LongWord;Log_Set:BOOL);cdecl;
begin
  inifile.Free;
  mythread.terminate;
  form1.close;
end;

procedure On_Send_Dll_ID_Name(var Name:array of char );cdecl;
var s:PChar; i:Integer;
begin
  s:=PLUGIN_NAME;
  for i:=0 to Length(s) do Name[i]:=s[i];
end;
{*************************  end  multidec implementation  *********************}

procedure TForm1.FormShow(Sender: TObject);
begin
   channame := currentprogramm1.Name;
   if channame='' then channame:='Default Channel';
   BISSKEY:=IniFile.ReadString('BISSKEYS',channame,'111111222222');
   LabelCh.Caption:=channame;
   MaskEdit1.Text:=BISSKEY;
end;

procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  Filter.Filter_ID:=0;
  running := false;
end;

function IsHex(ch: char): boolean;
var i: word;
begin
     i := ord(ch);
     IsHex :=   ((i>=ord('0')) and (i<=ord('9'))) or
                ((i>=ord('A')) and (i<=ord('F'))) or
                ((i>=ord('a')) and (i<=ord('f')));
end;

procedure TForm1.BitBtn1Click(Sender: TObject);
var i,L: integer; goodval: boolean; tmps: String[60];
begin
  L := Length(MaskEdit1.Text);
  goodval := (L=12);
  for i := 1 to L do
      if not IsHex(MaskEdit1.Text[i]) then goodval := false;
  if not goodval then begin
      MessageBox(MultiDecWindow,'Invalid BISS key format!'+#13+
           'It should be a 12 digit hex number.',
           'Error',MB_OK);
      exit;
      end;
  BISSKEY := MaskEdit1.Text;
  SetBISSKey;
  IniFile.WriteString('BISSKEYS',channame,BISSKey);
  Form1.Hide;
end;

procedure TForm1.BitBtn3Click(Sender: TObject);
begin
  if (channame<>'') and (channame<>'Default Channel') then
     IniFile.DeleteKey('BISSKEYS',channame);
  Form1.Hide;
end;


procedure TForm1.BitBtn2Click(Sender: TObject);
begin
  Form1.Hide;
end;


end.