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under dos image Veiwer ..

Posted on 2000-04-05
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Last Modified: 2010-04-04
I need a sorce code ,for image viewing so I can get benefit for my pascal program,may be for all kind formats.
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Question by:alim_maze
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bakry99 earned 20 total points
ID: 2686784
Type
        ColorValue = Record
                  Rv,Gv,Bv: Byte;
                 End;
    PaletteType = Array [0..255] Of ColorValue;
        Palette = Record
                 Rv : Byte;
         Gv : Byte;
         Bv : Byte;
         Rr : Byte;
                   End;
        BitMapType = Record
         BfType      : Word;
                 BfSize      : LongInt;
                 BfReserved1 : Word;
         BfReserved2 : Word;
         BfOffSetBits: LongInt;
                 Size        : LongInt;
         Width       : LongInt;
         Height      : LongInt;
         Planes      : Word;
         BitCount    : Word;
         Comp        : LongInt;
         iSize        : LongInt;
         xpelspermeter: LongInt;
         ypelspermeter: LongInt;
         ColorsUsed   : LongInt;
         ColorsImportant:LongInt;
                 PalArray       :Array[0..255] of Palette;
                 End;

var
   Bit      : BitMapType;
   i,j,Gd,Gm: Integer;
   P        : PaletteType;
   Width,Hight : Word;

Procedure SetVGAPalette( Tp : PaletteType);
    Var
       Regs: Registers;
  Begin
    With Regs Do
      Begin
        AH:=$10;
        Al:=$12;
        BX:=0;
        CX:=256;
        ES:=Seg(tp);
        DX:=Ofs(tp);
      End;
    Intr($10,Regs);
  End;

Procedure Read_BmfHeader;
var
   fh : File Of BitMapType;
Begin
        Assign(fh,ParamStr(1)+'.bmp');
        Reset(fh);
        Read(fh,Bit);
        Close(fh);
        If(Bit.BfType<>19778) Then
        Begin
          Writeln('FORMAT IS NOT RECOGNIZED!');
          halt;
        End;
        Width:=Bit.Width;
        Hight:=Bit.Height;
        For i:= 0 To 255 Do
        Begin
          P[i].Rv:=Bit.PalArray[i].Bv Shr 2;
          P[i].Gv:=Bit.PalArray[i].Gv Shr 2;
          P[i].Bv:=Bit.PalArray[i].Rv Shr 2;
        End;
End;

Procedure DisplayBitMap;
var
     i,j : Integer;
     f : File Of Byte;
     b : Byte;
Begin
     Assign(f,ParamStr(1)+'.bmp');
     Reset(f);
     Seek(f,sizeof(BitMapType));
     For i :=1 To Hight Do
     For j :=1 To Width Do
       Begin
            Read(f,b);
            PutPixel(j,Hight-i,B);
       End;
End;

Procedure DefPal;
Begin
      SetVgaPalette(P);
End;

Begin
      Read_BmfHeader;
      Gd := InstallUserDriver ('Svga256',Nil);
      Gm := 2;
      InitGraph(Gd,Gm,'');
      DefPal;
      DisplayBitMap;
      Readln;
      CloseGraph;
End.
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