730 lines
20 KiB
ObjectPascal
730 lines
20 KiB
ObjectPascal
unit PrecompOodle;
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interface
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uses
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OodleDLL,
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Utils,
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PrecompUtils,
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System.SysUtils, System.Classes, System.Types, System.Math;
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var
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Codec: TPrecompressor;
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implementation
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const
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OodleCodecs: array of PChar = ['lzna', 'kraken', 'mermaid', 'selkie', 'hydra',
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'leviathan'];
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CODEC_COUNT = 6;
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LZNA_CODEC = 0;
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KRAKEN_CODEC = 1;
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MERMAID_CODEC = 2;
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SELKIE_CODEC = 3;
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HYDRA_CODEC = 4;
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LEVIATHAN_CODEC = 5;
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const
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O_LENGTH = 32;
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O_TRADEOFF = 256;
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O_MAXSIZE = 16 * 1024 * 1024;
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var
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SOList: array of array [0 .. CODEC_COUNT - 1] of TSOList;
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OLength: Integer = O_LENGTH;
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OTradeOff: Integer = O_TRADEOFF;
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CodecAvailable, CodecEnabled: TArray<Boolean>;
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type
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POodleSI = ^TOodleSI;
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TOodleSI = record
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CSize, DSize: Integer;
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Codec: Integer;
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HasCRC: Boolean;
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end;
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procedure GetOodleSI(Buff: PByte; Size: Integer; StreamInfo: POodleSI;
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MaxBlocks: Integer = Integer.MaxValue; First: Boolean = True);
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const
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MinSize = 64;
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BlkSize = 262144;
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var
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I, J, K: Integer;
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Compressed: Boolean;
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begin
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if MaxBlocks <= 0 then
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exit;
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I := 0;
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if First then
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begin
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StreamInfo^.CSize := 0;
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StreamInfo^.DSize := 0;
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StreamInfo^.Codec := 0;
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StreamInfo^.HasCRC := False;
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if Size < 8 then
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exit;
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if ((Buff^ in [$8C, $CC]) = False) then
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exit;
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Compressed := Buff^ = $8C;
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if Compressed then
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begin
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case (Buff + 1)^ of
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{ $02:
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if not(((Buff + 2)^ shr 4 = 0) and (((Buff + 4)^ shr 4 = $F) or
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((Buff + 4)^ and $F = $F))) then
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exit; }
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$06, $0A, $0C:
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begin
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I := EndianSwap(PInteger(Buff + 2)^) shr 8 + 6;
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J := ((EndianSwap(PInteger(Buff + 5)^) shr 8) and $7FFFF) + 8;
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if I > J then
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begin
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K := ((EndianSwap(PInteger(Buff + J)^) shr 8) and $7FFFF) + 3;
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if I <> (J + K) then
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exit;
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end
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else if I <> J then
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exit;
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end;
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$86, $8A, $8C:
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begin
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StreamInfo^.HasCRC := True;
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I := EndianSwap(PInteger(Buff + 2)^) shr 8 + 9;
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J := ((EndianSwap(PInteger(Buff + 8)^) shr 8) and $7FFFF) + 11;
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if I > J then
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begin
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K := ((EndianSwap(PInteger(Buff + J)^) shr 8) and $7FFFF) + 3;
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if I <> (J + K) then
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exit;
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end
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else if I <> J then
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exit;
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end;
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else
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exit;
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end;
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end
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else
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begin
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if not(Buff + 1)^ in [ { $02, } $06, $0A, $0C] then
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exit;
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end;
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case (Buff + 1)^ of
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{ $02:
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StreamInfo^.Codec := 0; // Old oodle }
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$06, $86:
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StreamInfo^.Codec := 1; // Kraken
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$0A, $8A:
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StreamInfo^.Codec := 2; // Mermaid/Selkie
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$0C, $8C:
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StreamInfo^.Codec := 3; // Leviathan
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end;
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end
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else
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begin
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if not(Buff^ in [$0C, $4C]) then
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exit;
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Compressed := Buff^ = $0C;
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if Compressed then
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begin
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case (Buff + 1)^ of
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{ $02:
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if not(((Buff + 2)^ shr 4 = 0) and (((Buff + 4)^ shr 4 = $F) or
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((Buff + 4)^ and $F = $F))) then
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exit; }
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$06, $0A, $0C:
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if not(Buff + 5)^ shr 4 in [3, 8] then
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exit;
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$86, $8A, $8C:
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if not(Buff + 8)^ shr 4 in [3, 8] then
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exit;
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end;
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end
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else
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begin
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if not(Buff + 1)^ in [$06, $0A, $0C] then
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exit;
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end;
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end;
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if Compressed then
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begin
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case (Buff + 1)^ of
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{ $02:
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I := EndianSwap(PWord(Buff + 2)^) + 5; }
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$06, $0A, $0C:
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I := EndianSwap(PInteger(Buff + 2)^) shr 8 + 6;
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$86, $8A, $8C:
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I := EndianSwap(PInteger(Buff + 2)^) shr 8 + 9;
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else
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exit;
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end;
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if First and (I < MinSize) then
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exit;
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if StreamInfo^.CSize + I > Size then
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begin
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StreamInfo^.CSize := 0;
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StreamInfo^.DSize := 0;
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exit;
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end;
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if I = $00080005 then
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I := 6;
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Inc(StreamInfo^.CSize, I);
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Inc(StreamInfo^.DSize, BlkSize);
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Dec(MaxBlocks);
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GetOodleSI(Buff + I, Size, StreamInfo, MaxBlocks, False);
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end
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else
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begin
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case (Buff + 1)^ of
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$06, $0A, $0C:
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begin
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if (StreamInfo^.CSize + BlkSize + 3 <= Size) and
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((Buff + BlkSize + 2)^ in [$0C, $4C]) and
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((Buff + BlkSize + 3)^ = (Buff + 1)^) then
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begin
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Inc(StreamInfo^.CSize, BlkSize + 2);
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Inc(StreamInfo^.DSize, BlkSize);
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end
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else if (First = False) and (StreamInfo^.CSize + 8 <= Size) then
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begin
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Inc(StreamInfo^.CSize, 8 + 2);
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Inc(StreamInfo^.DSize, 8);
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exit;
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end
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else
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exit;
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Dec(MaxBlocks);
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GetOodleSI(Buff + BlkSize + 2, Size, StreamInfo, MaxBlocks, False);
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end;
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else
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exit;
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end;
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end;
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end;
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procedure OodleDecompressCB(userdata: Pointer; rawBuf: PByte;
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rawLen: NativeUInt; compBuf: PByte; compBufferSize, rawDone,
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compUsed: NativeUInt);
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begin
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WriteLn(ErrOutput, rawDone);
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end;
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function LocalLZ_Decompress(asrc, adst: PByte; asrcSize, adstCapacity: Integer;
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aIdent: Byte; out Res: Integer): Integer;
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const
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BlkSize = 262144;
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var
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A, B: Integer;
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begin
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B := IfThen(adstCapacity mod BlkSize = 0, Pred(adstCapacity div BlkSize),
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adstCapacity div BlkSize) * BlkSize;
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FillChar((adst + B)^, adstCapacity - B, aIdent);
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Res := OodleLZ_Decompress(asrc, asrcSize, adst, adstCapacity);
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A := Pred(adstCapacity);
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while A > B do
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begin
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if (adst + A)^ <> aIdent then
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break;
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Dec(A);
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end;
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Inc(A);
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Result := A;
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end;
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function CustomLZ_Decompress(src, dst: PByte; srcSize, dstCapacity: Integer;
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var Res: Integer): Boolean;
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const
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BlkSize = 262144;
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var
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W, X, Y, Z: Integer;
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begin
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Result := False;
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Y := 0;
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X := dstCapacity;
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X := Min(Max(LocalLZ_Decompress(src, dst, srcSize, X, 0, Y),
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LocalLZ_Decompress(src, dst, srcSize, X, 1, Z)), Pred(X));
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W := X;
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while (Y = 0) and (X > dstCapacity - BlkSize) and (W - X < OLength) do
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begin
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X := Min(Max(LocalLZ_Decompress(src, dst, srcSize, X, 0, Y),
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LocalLZ_Decompress(src, dst, srcSize, X, 1, Y)), Pred(X));
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end;
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X := Min(Succ(W), dstCapacity);
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while (Z = 0) and (X < Min(W + OLength, dstCapacity)) do
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begin
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LocalLZ_Decompress(src, dst, srcSize, X, 0, Z);
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Inc(X);
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end;
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Y := Max(Y, Z);
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if (Y > 0) then
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begin
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Res := Y;
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Result := True;
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end;
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end;
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function GetOodleUS(Instance: Integer; Input: PByte; Pos: NativeInt;
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StreamInfo: POodleSI; Output: _PrecompOutput; Add: _PrecompAdd;
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Funcs: PPrecompFuncs): Integer;
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const
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MinSize = 64;
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var
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Buffer: PByte;
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B: Boolean;
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SI: _StrInfo1;
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begin
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Result := 0;
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case StreamInfo^.Codec of
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1:
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if (CodecEnabled[KRAKEN_CODEC] = False) and
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(CodecEnabled[HYDRA_CODEC] = False) then
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exit;
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2:
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if (CodecEnabled[MERMAID_CODEC] = False) and
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(CodecEnabled[SELKIE_CODEC] = False) and
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(CodecEnabled[HYDRA_CODEC] = False) then
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exit;
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3:
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if (CodecEnabled[LEVIATHAN_CODEC] = False) and
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(CodecEnabled[HYDRA_CODEC] = False) then
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exit;
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else
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exit;
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end;
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Buffer := Funcs^.Allocator(Instance, StreamInfo^.DSize);
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B := CustomLZ_Decompress(Input + Pos, Buffer, StreamInfo^.CSize,
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StreamInfo^.DSize, Result);
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If B then
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if (Result > MinSize) and (Result > StreamInfo^.CSize) then
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begin
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Output(Instance, Buffer, Result);
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SI.Position := Pos;
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SI.OldSize := StreamInfo^.CSize;
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SI.Option := 0;
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SetBits(SI.Option, OTradeOff, 13, 11);
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case StreamInfo^.Codec of
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1:
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if CodecEnabled[KRAKEN_CODEC] then
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SetBits(SI.Option, KRAKEN_CODEC, 0, 5);
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2:
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if CodecEnabled[MERMAID_CODEC] then
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SetBits(SI.Option, MERMAID_CODEC, 0, 5)
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else if CodecEnabled[SELKIE_CODEC] then
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SetBits(SI.Option, SELKIE_CODEC, 0, 5);
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3:
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if CodecEnabled[LEVIATHAN_CODEC] then
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SetBits(SI.Option, LEVIATHAN_CODEC, 0, 5);
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end;
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if CodecEnabled[HYDRA_CODEC] then
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SetBits(SI.Option, HYDRA_CODEC, 0, 5);
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SetBits(SI.Option, Integer(StreamInfo^.HasCRC), 12, 1);
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SI.Status := TStreamStatus.None;
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SI.NewSize := Result;
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Funcs^.LogScan1(OodleCodecs[GetBits(SI.Option, 0, 5)], SI.Position,
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SI.OldSize, SI.NewSize);
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Add(Instance, @SI, nil, nil);
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end;
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end;
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function GetOodleCodec(Index: Integer): Integer;
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begin
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case Index of
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LZNA_CODEC:
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Result := 7;
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KRAKEN_CODEC:
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Result := 8;
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MERMAID_CODEC:
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Result := 9;
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SELKIE_CODEC:
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Result := 11;
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HYDRA_CODEC:
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Result := 12;
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LEVIATHAN_CODEC:
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Result := 13;
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else
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Result := 8;
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end;
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end;
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function OodleInit(Command: PChar; Count: Integer;
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Funcs: PPrecompFuncs): Boolean;
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var
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I: Integer;
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Options: TArray<Integer>;
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S: String;
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X, Y: Integer;
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begin
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Result := True;
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SetLength(SOList, Count);
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for X := Low(SOList) to High(SOList) do
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for Y := Low(SOList[X]) to High(SOList[X]) do
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SOList[X, Y] := TSOList.Create([], TSOMethod.MTF);
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for X := Low(CodecAvailable) to High(CodecAvailable) do
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begin
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CodecAvailable[X] := False;
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CodecEnabled[X] := False;
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end;
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for X := Low(CodecAvailable) to High(CodecAvailable) do
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CodecAvailable[X] := OodleDLL.DLLLoaded;
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X := 0;
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while Funcs^.GetCodec(Command, X, False) <> '' do
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begin
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S := Funcs^.GetCodec(Command, X, False);
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for Y := Low(OodleCodecs) to High(OodleCodecs) do
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if (CompareText(S, OodleCodecs[Y]) = 0) and OodleDLL.DLLLoaded then
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begin
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CodecEnabled[Y] := True;
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if Funcs^.GetParam(Command, X, 'l') <> '' then
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for I := Low(SOList) to High(SOList) do
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SOList[I][Y].Update
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([StrToInt(Funcs^.GetParam(Command, X, 'l'))], True);
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if Funcs^.GetParam(Command, X, 'n') <> '' then
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OLength := StrToInt(Funcs^.GetParam(Command, X, 'n'));
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if Funcs^.GetParam(Command, X, 't') <> '' then
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OTradeOff := StrToInt(Funcs^.GetParam(Command, X, 't'));
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end;
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Inc(X);
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end;
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SetLength(Options, 0);
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for I := 1 to 9 do
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Insert(I, Options, Length(Options));
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for X := Low(SOList) to High(SOList) do
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for Y := Low(SOList[X]) to High(SOList[X]) do
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if SOList[X, Y].Count = 0 then
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SOList[X, Y].Update(Options);
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end;
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procedure OodleFree(Funcs: PPrecompFuncs);
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var
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X, Y: Integer;
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begin
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for X := Low(SOList) to High(SOList) do
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for Y := Low(SOList[X]) to High(SOList[X]) do
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SOList[X, Y].Free;
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end;
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function OodleParse(Command: PChar; Option: PInteger;
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Funcs: PPrecompFuncs): Boolean;
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var
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S: String;
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I, J: Integer;
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begin
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Result := False;
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Option^ := 0;
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SetBits(Option^, OTradeOff, 13, 11);
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I := 0;
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while Funcs^.GetCodec(Command, I, False) <> '' do
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begin
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S := Funcs^.GetCodec(Command, I, False);
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for J := Low(OodleCodecs) to High(OodleCodecs) do
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if (CompareText(S, OodleCodecs[J]) = 0) and OodleDLL.DLLLoaded then
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begin
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SetBits(Option^, J, 0, 5);
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if Funcs^.GetParam(Command, I, 'l') <> '' then
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SetBits(Option^, StrToInt(Funcs^.GetParam(Command, I, 'l')), 5, 7);
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if String(Funcs^.GetParam(Command, I, 'c')) = '1' then
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SetBits(Option^, 1, 12, 1);
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if Funcs^.GetParam(Command, I, 't') <> '' then
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SetBits(Option^, StrToInt(Funcs^.GetParam(Command, I, 't')), 13, 11);
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Result := True;
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end;
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Inc(I);
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end;
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end;
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procedure OodleScan1(Instance, Depth: Integer; Input: PByte;
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Size, SizeEx: NativeInt; Output: _PrecompOutput; Add: _PrecompAdd;
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Funcs: PPrecompFuncs);
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var
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Buffer: PByte;
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Pos: NativeInt;
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X: Integer;
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Res: Integer;
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SI: _StrInfo1;
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OodleSI: TOodleSI;
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DI1, DI2: TDepthInfo;
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DS: TPrecompStr;
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begin
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DI1 := Funcs^.GetDepthInfo(Instance);
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DS := Funcs^.GetCodec(DI1.Codec, 0, False);
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if DS <> '' then
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begin
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X := IndexTextW(@DS[0], OodleCodecs);
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if X < 0 then
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exit;
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if DI1.OldSize = 0 then
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DI1.OldSize := SizeEx;
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if not CodecAvailable[X] then
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exit;
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if not CodecAvailable[X] then
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exit;
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if (X in [LZNA_CODEC, LEVIATHAN_CODEC]) and (DI1.NewSize <= 0) then
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exit;
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if DI1.NewSize <= 0 then
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Res := O_MAXSIZE
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else
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Res := DI1.NewSize;
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Buffer := Funcs^.Allocator(Instance, Res);
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case X of
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KRAKEN_CODEC, MERMAID_CODEC, SELKIE_CODEC, HYDRA_CODEC:
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begin
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if DI1.NewSize <= 0 then
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begin
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if not CustomLZ_Decompress(Input, Buffer, DI1.OldSize, Res, Res)
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then
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Res := 0;
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end
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else
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Res := OodleLZ_Decompress(Input, DI1.OldSize, Buffer, Res);
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end;
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else
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begin
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if DI1.NewSize > 0 then
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Res := OodleLZ_Decompress(Input, DI1.OldSize, Buffer, Res)
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else
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Res := 0;
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end;
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end;
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if (Res > DI1.OldSize) then
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begin
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Output(Instance, Buffer, Res);
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SI.Position := 0;
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SI.OldSize := DI1.OldSize;
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SI.NewSize := Res;
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SI.Option := 0;
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SetBits(SI.Option, X, 0, 5);
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if System.Pos(SPrecompSep2, DI1.Codec) > 0 then
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SI.Status := TStreamStatus.Predicted
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else
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SI.Status := TStreamStatus.None;
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DS := Funcs^.GetDepthCodec(DI1.Codec);
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Move(DS[0], DI2.Codec, SizeOf(DI2.Codec));
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DI2.OldSize := SI.NewSize;
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DI2.NewSize := SI.NewSize;
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Funcs^.LogScan1(OodleCodecs[GetBits(SI.Option, 0, 5)], SI.Position,
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SI.OldSize, SI.NewSize);
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Add(Instance, @SI, DI1.Codec, @DI2);
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end;
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|
exit;
|
|
end;
|
|
if BoolArray(CodecEnabled, False) then
|
|
exit;
|
|
Pos := 0;
|
|
while Pos < Size do
|
|
begin
|
|
try
|
|
while Pos < Size do
|
|
begin
|
|
GetOodleSI(Input + Pos, SizeEx - Pos, @OodleSI);
|
|
if (OodleSI.CSize > 0) then
|
|
begin
|
|
try
|
|
if GetOodleUS(Instance, Input, Pos, @OodleSI, Output, Add, Funcs) > 0
|
|
then
|
|
begin
|
|
Inc(Pos, OodleSI.CSize);
|
|
continue;
|
|
end;
|
|
except
|
|
end;
|
|
end;
|
|
Inc(Pos);
|
|
end;
|
|
except
|
|
Inc(Pos);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function OodleScan2(Instance, Depth: Integer; Input: Pointer; Size: cardinal;
|
|
StreamInfo: PStrInfo2; Offset: PInteger; Output: _PrecompOutput;
|
|
Funcs: PPrecompFuncs): Boolean;
|
|
var
|
|
Buffer: PByte;
|
|
B: Boolean;
|
|
I: Integer;
|
|
ResultN: TIntegerDynArray;
|
|
X: Integer;
|
|
Res: Integer;
|
|
OodleSI: TOodleSI;
|
|
begin
|
|
Result := False;
|
|
X := GetBits(StreamInfo^.Option, 0, 5);
|
|
if (X <> LZNA_CODEC) and (StreamInfo^.OldSize <= 0) then
|
|
begin
|
|
GetOodleSI(Input, Size, @OodleSI);
|
|
StreamInfo^.OldSize := OodleSI.CSize;
|
|
end;
|
|
if StreamInfo^.NewSize > 0 then
|
|
begin
|
|
Buffer := Funcs^.Allocator(Instance, StreamInfo^.NewSize);
|
|
Res := OodleLZ_Decompress(Input, StreamInfo^.OldSize, Buffer,
|
|
StreamInfo^.NewSize);
|
|
if Res = StreamInfo^.NewSize then
|
|
begin
|
|
Output(Instance, Buffer, Res);
|
|
Result := True;
|
|
end;
|
|
end
|
|
else if (not X in [LZNA_CODEC, LEVIATHAN_CODEC]) and (StreamInfo^.NewSize <= 0)
|
|
then
|
|
begin
|
|
Buffer := Funcs^.Allocator(Instance, OodleSI.DSize);
|
|
if CustomLZ_Decompress(Input, Buffer, StreamInfo^.OldSize,
|
|
OodleSI.DSize, Res) then
|
|
begin
|
|
Output(Instance, Buffer, Res);
|
|
StreamInfo^.NewSize := Res;
|
|
Funcs^.LogScan2(OodleCodecs[GetBits(StreamInfo^.Option, 0, 5)],
|
|
StreamInfo^.OldSize, StreamInfo^.NewSize);
|
|
Result := True;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function OodleProcess(Instance, Depth: Integer; OldInput, NewInput: Pointer;
|
|
StreamInfo: PStrInfo2; Output: _PrecompOutput; Funcs: PPrecompFuncs): Boolean;
|
|
var
|
|
Buffer: PByte;
|
|
Params: String;
|
|
I: Integer;
|
|
X, Y: Integer;
|
|
Res1: Integer;
|
|
Res2: NativeUInt;
|
|
COptions: TOodleLZ_CompressOptions;
|
|
begin
|
|
Result := False;
|
|
X := GetBits(StreamInfo^.Option, 0, 5);
|
|
if BoolArray(CodecAvailable, False) or (CodecAvailable[X] = False) then
|
|
exit;
|
|
Y := GetOodleCodec(X);
|
|
Buffer := Funcs^.Allocator(Instance, OodleLZ_GetCompressedBufferSizeNeeded(Y,
|
|
StreamInfo^.NewSize));
|
|
SOList[Instance][X].Index := 0;
|
|
while SOList[Instance][X].Get(I) >= 0 do
|
|
begin
|
|
if StreamInfo^.Status >= TStreamStatus.Predicted then
|
|
begin
|
|
if GetBits(StreamInfo^.Option, 5, 7) <> I then
|
|
continue;
|
|
if (StreamInfo^.Status = TStreamStatus.Database) and
|
|
(GetBits(StreamInfo^.Option, 31, 1) = 0) then
|
|
begin
|
|
Res1 := StreamInfo^.OldSize;
|
|
Result := True;
|
|
end;
|
|
end;
|
|
Move(OodleLZ_CompressOptions_GetDefault(Y, I)^, COptions,
|
|
SizeOf(TOodleLZ_CompressOptions));
|
|
COptions.sendQuantumCRCs := GetBits(StreamInfo^.Option, 12, 1) = 1;
|
|
COptions.spaceSpeedTradeoffBytes := GetBits(StreamInfo^.Option, 13, 11);
|
|
// COptions.dictionarySize := 262144;
|
|
Params := 'l' + I.ToString + ':' + 'c' + GetBits(StreamInfo^.Option, 12, 1)
|
|
.ToString + ':' + 't' + GetBits(StreamInfo^.Option, 13, 11).ToString;
|
|
if not Result then
|
|
Res1 := OodleLZ_Compress(Y, NewInput, StreamInfo^.NewSize, Buffer, I,
|
|
@COptions);
|
|
if not Result then
|
|
Result := (Res1 = StreamInfo^.OldSize) and CompareMem(OldInput, Buffer,
|
|
StreamInfo^.OldSize);
|
|
Funcs^.LogProcess(OodleCodecs[GetBits(StreamInfo^.Option, 0, 5)],
|
|
PChar(Params), StreamInfo^.OldSize, StreamInfo^.NewSize, Res1, Result);
|
|
if Result or (StreamInfo^.Status = TStreamStatus.Predicted) then
|
|
break;
|
|
end;
|
|
{ if (Result = False) and ((StreamInfo^.Status >= TStreamStatus.Predicted) or
|
|
(SOList[Instance][X].Count = 1)) and (DIFF_TOLERANCE > 0) then
|
|
begin
|
|
Buffer := Funcs^.Allocator(Instance, Res1 + Max(StreamInfo^.OldSize, Res1));
|
|
Res2 := PrecompEncodePatch(OldInput, StreamInfo^.OldSize, Buffer, Res1,
|
|
Buffer + Res1, Max(StreamInfo^.OldSize, Res1));
|
|
Funcs^.LogPatch1(StreamInfo^.OldSize, Res1, Res2,
|
|
Funcs^.AcceptPatch(StreamInfo^.OldSize, Res1, Res2));
|
|
if Funcs^.AcceptPatch(StreamInfo^.OldSize, Res1, Res2) then
|
|
begin
|
|
Output(Instance, Buffer + Res1, Res2);
|
|
SetBits(StreamInfo^.Option, 1, 31, 1);
|
|
SOList[Instance][X].Add(I);
|
|
Result := True;
|
|
end;
|
|
end; }
|
|
if Result then
|
|
begin
|
|
SetBits(StreamInfo^.Option, I, 5, 7);
|
|
SOList[Instance][X].Add(I);
|
|
end;
|
|
end;
|
|
|
|
function OodleRestore(Instance, Depth: Integer; Input, InputExt: Pointer;
|
|
StreamInfo: _StrInfo3; Output: _PrecompOutput; Funcs: PPrecompFuncs): Boolean;
|
|
var
|
|
Buffer: PByte;
|
|
Params: String;
|
|
X, Y: Integer;
|
|
Res1: Integer;
|
|
Res2: NativeUInt;
|
|
COptions: TOodleLZ_CompressOptions;
|
|
begin
|
|
Result := False;
|
|
X := GetBits(StreamInfo.Option, 0, 5);
|
|
if CodecAvailable[X] = False then
|
|
exit;
|
|
Y := GetOodleCodec(X);
|
|
Buffer := Funcs^.Allocator(Instance, OodleLZ_GetCompressedBufferSizeNeeded(Y,
|
|
StreamInfo.NewSize));
|
|
Move(OodleLZ_CompressOptions_GetDefault(Y, GetBits(StreamInfo.Option, 5, 7))^,
|
|
COptions, SizeOf(TOodleLZ_CompressOptions));
|
|
COptions.sendQuantumCRCs := GetBits(StreamInfo.Option, 12, 1) = 1;
|
|
COptions.spaceSpeedTradeoffBytes := GetBits(StreamInfo.Option, 13, 11);
|
|
Params := 'l' + GetBits(StreamInfo.Option, 5, 7).ToString + ':' + 'c' +
|
|
GetBits(StreamInfo.Option, 12, 1).ToString + ':' + 't' +
|
|
GetBits(StreamInfo.Option, 13, 11).ToString;
|
|
Res1 := OodleLZ_Compress(Y, Input, StreamInfo.NewSize, Buffer,
|
|
GetBits(StreamInfo.Option, 5, 7), @COptions);
|
|
Funcs^.LogRestore(OodleCodecs[GetBits(StreamInfo.Option, 0, 5)],
|
|
PChar(Params), StreamInfo.OldSize, StreamInfo.NewSize, Res1, True);
|
|
if GetBits(StreamInfo.Option, 31, 1) = 1 then
|
|
begin
|
|
Buffer := Funcs^.Allocator(Instance, Res1 + StreamInfo.OldSize);
|
|
Res2 := PrecompDecodePatch(InputExt, StreamInfo.ExtSize, Buffer, Res1,
|
|
Buffer + Res1, StreamInfo.OldSize);
|
|
Funcs^.LogPatch2(StreamInfo.OldSize, Res1, StreamInfo.ExtSize, Res2 > 0);
|
|
if Res2 > 0 then
|
|
begin
|
|
Output(Instance, Buffer + Res1, StreamInfo.OldSize);
|
|
Result := True;
|
|
end;
|
|
exit;
|
|
end;
|
|
if Res1 = StreamInfo.OldSize then
|
|
begin
|
|
Output(Instance, Buffer, StreamInfo.OldSize);
|
|
Result := True;
|
|
end;
|
|
end;
|
|
|
|
var
|
|
I: Integer;
|
|
|
|
initialization
|
|
|
|
Codec.Names := [];
|
|
for I := Low(OodleCodecs) to High(OodleCodecs) do
|
|
begin
|
|
Codec.Names := Codec.Names + [OodleCodecs[I]];
|
|
StockMethods.Add(OodleCodecs[I]);
|
|
end;
|
|
Codec.Initialised := False;
|
|
Codec.Init := @OodleInit;
|
|
Codec.Free := @OodleFree;
|
|
Codec.Parse := @OodleParse;
|
|
Codec.Scan1 := @OodleScan1;
|
|
Codec.Scan2 := @OodleScan2;
|
|
Codec.Process := @OodleProcess;
|
|
Codec.Restore := @OodleRestore;
|
|
SetLength(CodecAvailable, Length(Codec.Names));
|
|
SetLength(CodecEnabled, Length(Codec.Names));
|
|
|
|
end.
|