Changeset 129 for CoolStreaming


Ignore:
Timestamp:
Jan 17, 2011, 6:55:36 AM (14 years ago)
Author:
george
Message:
Location:
CoolStreaming/Demo/BitStream
Files:
2 edited

Legend:

Unmodified
Added
Removed

  • CoolStreaming/Demo/BitStream/BitStreamTest.lpi

    r122 r129  
    4242      </Item2>
    4343    </RequiredPackages>
    44     <Units Count="5">
     44    <Units Count="6">
    4545      <Unit0>
    4646        <Filename Value="BitStreamTest.lpr"/>
    4747        <IsPartOfProject Value="True"/>
    4848        <UnitName Value="BitStreamTest"/>
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    5151        <TopLine Value="1"/>
    … …  
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    6969        <Loaded Value="True"/>
    … …  
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    8484        <UnitName Value="Controls"/>
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    8686        <WindowIndex Value="0"/>
    8787        <TopLine Value="1207"/>
    … …  
    9898        <UsageCount Value="10"/>
    9999      </Unit4>
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     108      </Unit5>
    100109    </Units>
    101     <JumpHistory Count="30" HistoryIndex="28">
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  • CoolStreaming/Demo/BitStream/UMainForm.pas

    r122 r129  
    99  UBitStream;
    1010
    11 const
    12   Symbols: array[0..1] of Char = ('.', '#');
    13 
    1411type
    15   TByteArray = array of Byte;
    16 
     12  TArrayOfByte = array of Byte;
    1713
    1814  { TMainForm }
    … …  
    2319  private
    2420    procedure PrintBitStream(Stream: TBitStream; StringList: TStrings);
    25     procedure PrintData(Data: TByteArray; Count: Integer; StringList: TStrings);
     21    procedure PrintData(Data: TArrayOfByte; Count: Integer; StringList: TStrings);
    2622    procedure PrintStream(Stream: TStream; StringList: TStrings);
    27     { private declarations }
    2823  public
    29     { public declarations }
    3024  end;
    3125
    … …  
    4842  WindowState := wsMaximized;
    4943
    50   with Memo1, Lines do begin
    51   BitStream := TMemoryBitStream.Create;
    52   BitStream2 := TMemoryBitStream.Create;
    53   SetLength(Buffer, 4);
    54   Buffer[0] := $12;
    55   Buffer[1] := $34;
    56   Buffer[2] := $56;
    57   Buffer[3] := $78;
    58   Add('Source data:');
    59   PrintData(Buffer, Length(Buffer) * 8, Lines);
     44  with Memo1, Lines do try
     45    BeginUpdate;
     46    BitStream := TMemoryBitStream.Create;
     47    BitStream2 := TMemoryBitStream.Create;
     48    SetLength(Buffer, 4);
     49    Buffer[0] := $12;
     50    Buffer[1] := $34;
     51    Buffer[2] := $56;
     52    Buffer[3] := $78;
     53    Add('Source data:');
     54    PrintData(Buffer, Length(Buffer) * 8, Lines);
    6055
    61   BitStream.Write(Buffer[0], 28);
    62   Add('Write data to stream:');
    63   PrintBitStream(BitStream, Lines);
    64   // Write second bit array after first which lead to store data as shifted
    65   BitStream.Write(Buffer[0], 28);
    66   Add('Append shifted data to stream:');
    67   PrintBitStream(BitStream, Lines);
     56    BitStream.Write(Buffer[0], 28);
     57    Add('Write data to stream:');
     58    PrintBitStream(BitStream, Lines);
     59    // Write second bit array after first which lead to store data as shifted
     60    BitStream.Write(Buffer[0], 28);
     61    Add('Append shifted data to stream:');
     62    PrintBitStream(BitStream, Lines);
    6863
    69   // Read test of sub bit array
    70   BitStream.Position := 1;
    71   BitStream.Read(Buffer[0], 32);
    72   Add('Read bit data part:');
    73   PrintData(Buffer, Length(Buffer) * 8, Lines);
     64    // Read test of sub bit array
     65    BitStream.Position := 1;
     66    BitStream.Read(Buffer[0], 32);
     67    Add('Read bit data part:');
     68    PrintData(Buffer, Length(Buffer) * 8, Lines);
    7469
    75  (* // Test stream copy
    76   Add('Copy bit block to another stream:');
    77   for I := 0 to BitStream.Size do begin
    78     BitStream.Position := I;
    79     BitStream2.Size := 0;
    80     BitStream2.CopyFrom(BitStream, BitStream.Size);
    81     PrintBitStream(BitStream2, Lines);
    82   end;
    83   for I := 0 to BitStream.Size do begin
    84     BitStream.Position := 0;
    85     BitStream2.Size := 0;
    86     BitStream2.Position := I;
    87     BitStream2.CopyFrom(BitStream, BitStream.Size);
    88     PrintBitStream(BitStream2, Lines);
    89   end;  *)
    90 
    91   Add('Bit copy of substreams');
    92   SetLength(Buffer, 1000);
    93   for Y := 1 to BitStream.Size do begin
    94     Add('Size: ' + IntToStr(Y));
    95     for I := 0 to BitStream.Size - Y do begin
     70   (* // Test stream copy
     71    Add('Copy bit block to another stream:');
     72    for I := 0 to BitStream.Size do begin
    9673      BitStream.Position := I;
    9774      BitStream2.Size := 0;
    98       //BitStream2.CopyFrom(BitStream, Y);
    99       //PrintBitStream(BitStream2, Lines);
    100       SetLength(Buffer, 1000);
    101       C := BitStream.Read(Buffer[0], Y);
    102       SetLength(Buffer, C div 8 + 1);
    103       PrintData(Buffer, C, Lines);
     75      BitStream2.CopyFrom(BitStream, BitStream.Size);
     76      PrintBitStream(BitStream2, Lines);
    10477    end;
    105     Add('');
    106   end;
     78    for I := 0 to BitStream.Size do begin
     79      BitStream.Position := 0;
     80      BitStream2.Size := 0;
     81      BitStream2.Position := I;
     82      BitStream2.CopyFrom(BitStream, BitStream.Size);
     83      PrintBitStream(BitStream2, Lines);
     84    end;  *)
    10785
    108   BitStream.Destroy;
    109   BitStream2.Destroy;
     86    Add('Bit copy of substreams');
     87    SetLength(Buffer, 1000);
     88    for Y := 1 to BitStream.Size do begin
     89      Add('Size: ' + IntToStr(Y));
     90      for I := 0 to BitStream.Size - Y do begin
     91        BitStream.Position := I;
     92        BitStream2.Size := 0;
     93        //BitStream2.CopyFrom(BitStream, Y);
     94        //PrintBitStream(BitStream2, Lines);
     95        SetLength(Buffer, 1000);
     96        C := BitStream.Read(Buffer[0], Y);
     97        SetLength(Buffer, C div 8 + 1);
     98        PrintData(Buffer, C, Lines);
     99      end;
     100      Add('');
     101    end;
     102  finally
     103    BitStream.Free;
     104    BitStream2.Free;
     105    EndUpdate;
    110106  end;
    111107end;
    112108
    113 procedure TMainForm.PrintData(Data: TByteArray; Count: Integer; StringList: TStrings);
     109procedure TMainForm.PrintData(Data: TArrayOfByte; Count: Integer; StringList: TStrings);
    114110var
    115111  I: Integer;
    … …  
    124120    for B := 0 to 7 do begin
    125121      if ((I * 8) + B) >= Count then Break;
    126       Line := Line + Symbols[(OneByte shr B) and 1];
     122      Line := Line + IntToStr((OneByte shr B) and 1);
    127123    end;
    128124  end;
    … …  
    143139    Data := Stream.ReadByte;
    144140    for B := 0 to 7 do
    145       Line := Line + Symbols[(Data shr B) and 1];
     141      Line := Line + IntToStr((Data shr B) and 1);
    146142  end;
    147143  StringList.Add(Line);
    … …  
    150146
    151147procedure TMainForm.PrintBitStream(Stream: TBitStream; StringList: TStrings);
    152 var
    153   I: Integer;
    154   Line: string;
    155148begin
    156   Stream.Position := 0;
    157   for I := 0 to Stream.Size - 1 do
    158     Line := Line + Symbols[Integer(Stream.ReadBit)];
    159   StringList.Add(Line);
    160   //StringList.Add('');
     149  StringList.Add(Stream.AsString);
    161150end;
    162151
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