691 lines
18 KiB
ObjectPascal
691 lines
18 KiB
ObjectPascal
unit PrecompOodle;
|
|
|
|
interface
|
|
|
|
uses
|
|
OodleDLL, XDeltaDLL,
|
|
Utils,
|
|
PrecompUtils,
|
|
System.SysUtils, System.Math;
|
|
|
|
{ 8C 07 - 0:LZH
|
|
8C 00 - 1:LZHLW
|
|
8C 01 - 2:LZNIB
|
|
CC 07 - 3:None
|
|
8C 02 - 4:LZB16
|
|
8C 03 - 5:LZBLW
|
|
8C 04 - 6:LZA
|
|
8C 05 - 7:LZNA
|
|
8C 06 - 8:Kraken
|
|
8C 0A - 9:Mermaid
|
|
8C 0B - 10:BitKnit
|
|
8C 0A - 11:Selkie
|
|
8C 0A - 12:Hydra
|
|
8C 0C - 13:Leviathan }
|
|
|
|
var
|
|
Codec: TPrecompressor;
|
|
|
|
implementation
|
|
|
|
const
|
|
OodleCodecs: array of PChar = ['lzna', 'kraken', 'mermaid', 'selkie', 'hydra',
|
|
'leviathan'];
|
|
CODEC_COUNT = 6;
|
|
LZNA_CODEC = 0;
|
|
KRAKEN_CODEC = 1;
|
|
MERMAID_CODEC = 2;
|
|
SELKIE_CODEC = 3;
|
|
HYDRA_CODEC = 4;
|
|
LEVIATHAN_CODEC = 5;
|
|
|
|
const
|
|
O_TRADEOFF = 256;
|
|
O_MAXSIZE = 16 * 1024 * 1024;
|
|
|
|
var
|
|
SOList: array of array [0 .. CODEC_COUNT - 1] of TSOList;
|
|
OTradeOff: Integer = O_TRADEOFF;
|
|
CodecAvailable, CodecEnabled: TArray<Boolean>;
|
|
|
|
type
|
|
POodleSI = ^TOodleSI;
|
|
|
|
TOodleSI = record
|
|
CSize, DSize: Integer;
|
|
Codec: Integer;
|
|
HasCRC: Boolean;
|
|
end;
|
|
|
|
procedure GetOodleSI(Buff: PByte; Size: Integer; StreamInfo: POodleSI;
|
|
MaxBlocks: Integer = Integer.MaxValue; First: Boolean = True);
|
|
const
|
|
MinSize = 64;
|
|
BlkSize = 262144;
|
|
var
|
|
I, J, K: Integer;
|
|
Compressed: Boolean;
|
|
begin
|
|
if MaxBlocks <= 0 then
|
|
exit;
|
|
I := 0;
|
|
if First then
|
|
begin
|
|
StreamInfo^.CSize := 0;
|
|
StreamInfo^.DSize := 0;
|
|
StreamInfo^.Codec := 0;
|
|
StreamInfo^.HasCRC := False;
|
|
if Size < 8 then
|
|
exit;
|
|
if ((Buff^ in [$8C, $CC]) = False) then
|
|
exit;
|
|
Compressed := Buff^ = $8C;
|
|
if Compressed then
|
|
begin
|
|
case (Buff + 1)^ of
|
|
{ $02:
|
|
if not(((Buff + 2)^ shr 4 = 0) and (((Buff + 4)^ shr 4 = $F) or
|
|
((Buff + 4)^ and $F = $F))) then
|
|
exit; }
|
|
$06, $0A, $0C:
|
|
begin
|
|
I := EndianSwap(PInteger(Buff + 2)^) shr 8 + 6;
|
|
J := ((EndianSwap(PInteger(Buff + 5)^) shr 8) and $7FFFF) + 8;
|
|
if I > J then
|
|
begin
|
|
K := ((EndianSwap(PInteger(Buff + J)^) shr 8) and $7FFFF) + 3;
|
|
if I <> (J + K) then
|
|
exit;
|
|
end
|
|
else if I <> J then
|
|
exit;
|
|
end;
|
|
$86, $8A, $8C:
|
|
begin
|
|
StreamInfo^.HasCRC := True;
|
|
I := EndianSwap(PInteger(Buff + 2)^) shr 8 + 9;
|
|
J := ((EndianSwap(PInteger(Buff + 8)^) shr 8) and $7FFFF) + 11;
|
|
if I > J then
|
|
begin
|
|
K := ((EndianSwap(PInteger(Buff + J)^) shr 8) and $7FFFF) + 3;
|
|
if I <> (J + K) then
|
|
exit;
|
|
end
|
|
else if I <> J then
|
|
exit;
|
|
end;
|
|
else
|
|
exit;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if not(Buff + 1)^ in [ { $02, } $06, $0A, $0C] then
|
|
exit;
|
|
end;
|
|
case (Buff + 1)^ of
|
|
{ $02:
|
|
StreamInfo^.Codec := 0; // Old oodle }
|
|
$06, $86:
|
|
StreamInfo^.Codec := 1; // Kraken
|
|
$0A, $8A:
|
|
StreamInfo^.Codec := 2; // Mermaid/Selkie
|
|
$0C, $8C:
|
|
StreamInfo^.Codec := 3; // Leviathan
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if not(Buff^ in [$0C, $4C]) then
|
|
exit;
|
|
Compressed := Buff^ = $0C;
|
|
if Compressed then
|
|
begin
|
|
case (Buff + 1)^ of
|
|
{ $02:
|
|
if not(((Buff + 2)^ shr 4 = 0) and (((Buff + 4)^ shr 4 = $F) or
|
|
((Buff + 4)^ and $F = $F))) then
|
|
exit; }
|
|
$06, $0A, $0C:
|
|
if not(Buff + 5)^ shr 4 in [3, 8] then
|
|
exit;
|
|
$86, $8A, $8C:
|
|
if not(Buff + 8)^ shr 4 in [3, 8] then
|
|
exit;
|
|
end;
|
|
end
|
|
else
|
|
begin
|
|
if not(Buff + 1)^ in [$06, $0A, $0C] then
|
|
exit;
|
|
end;
|
|
end;
|
|
if Compressed then
|
|
begin
|
|
case (Buff + 1)^ of
|
|
{ $02:
|
|
I := EndianSwap(PWord(Buff + 2)^) + 5; }
|
|
$06, $0A, $0C:
|
|
I := EndianSwap(PInteger(Buff + 2)^) shr 8 + 6;
|
|
$86, $8A, $8C:
|
|
I := EndianSwap(PInteger(Buff + 2)^) shr 8 + 9;
|
|
else
|
|
exit;
|
|
end;
|
|
if First and (I < MinSize) then
|
|
exit;
|
|
if StreamInfo^.CSize + I > Size then
|
|
begin
|
|
StreamInfo^.CSize := 0;
|
|
StreamInfo^.DSize := 0;
|
|
exit;
|
|
end;
|
|
if I = $00080005 then
|
|
I := 6;
|
|
Inc(StreamInfo^.CSize, I);
|
|
Inc(StreamInfo^.DSize, BlkSize);
|
|
Dec(MaxBlocks);
|
|
GetOodleSI(Buff + I, Size, StreamInfo, MaxBlocks, False);
|
|
end
|
|
else
|
|
begin
|
|
case (Buff + 1)^ of
|
|
$06, $0A, $0C:
|
|
begin
|
|
if StreamInfo^.CSize + BlkSize + 2 <= Size then
|
|
begin
|
|
if (PWord(Buff + BlkSize + 2)^ = (((Buff + 1)^ shl 8) + $4C)) or
|
|
((First = True) and ((Buff + BlkSize + 2)^ in [$0C, $4C])) then
|
|
begin
|
|
Inc(StreamInfo^.CSize, BlkSize + 2);
|
|
Inc(StreamInfo^.DSize, BlkSize);
|
|
end;
|
|
end
|
|
else
|
|
I := BlkSize + 2 - Size;
|
|
if StreamInfo^.CSize + I > Size then
|
|
begin
|
|
StreamInfo^.CSize := 0;
|
|
StreamInfo^.DSize := 0;
|
|
exit;
|
|
end;
|
|
Inc(StreamInfo^.CSize, Abs(I));
|
|
Inc(StreamInfo^.DSize, Abs(I) - 2);
|
|
Dec(MaxBlocks);
|
|
if I > 0 then
|
|
GetOodleSI(Buff + I, Size, StreamInfo, MaxBlocks, False);
|
|
end;
|
|
else
|
|
exit;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
{ procedure OodleDecompressCB(userdata: Pointer; rawBuf: PByte;
|
|
rawLen: NativeUInt; compBuf: PByte; compBufferSize, rawDone,
|
|
compUsed: NativeUInt);
|
|
begin
|
|
end; }
|
|
|
|
function CustomLZ_Decompress(src, dst: PByte; srcSize, dstCapacity: Integer;
|
|
Ident: Byte; var Res: Integer): Boolean;
|
|
const
|
|
BlkSize = 262144;
|
|
UpLen = 256;
|
|
DownLen = 16;
|
|
var
|
|
A, B, I, J, X: Integer;
|
|
Sizes: array [0 .. UpLen + DownLen - 1] of Integer;
|
|
begin
|
|
B := IfThen(dstCapacity mod BlkSize = 0, Pred(dstCapacity div BlkSize),
|
|
dstCapacity div BlkSize) * BlkSize;
|
|
FillChar((dst + B)^, dstCapacity - B, Ident);
|
|
OodleLZ_Decompress(src, srcSize, dst, dstCapacity);
|
|
A := Pred(dstCapacity);
|
|
while A > B do
|
|
begin
|
|
if (dst + A)^ <> Ident then
|
|
break;
|
|
Dec(A);
|
|
end;
|
|
Inc(A);
|
|
for I := Low(Sizes) to High(Sizes) do
|
|
Sizes[I] := -1;
|
|
J := Min(dstCapacity, A + UpLen);
|
|
I := Max(B, A - DownLen);
|
|
X := J - I;
|
|
while (J > I) do
|
|
begin
|
|
FillChar((dst + I)^, X, Ident);
|
|
OodleLZ_Decompress(src, srcSize, dst, J);
|
|
A := Pred(J);
|
|
while A > B do
|
|
begin
|
|
if (dst + A)^ <> Ident then
|
|
break;
|
|
Dec(A);
|
|
end;
|
|
Inc(A);
|
|
Sizes[Length(Sizes) - (J - I)] := A;
|
|
Dec(J);
|
|
end;
|
|
for I := Low(Sizes) to High(Sizes) do
|
|
begin
|
|
A := Sizes[I];
|
|
for J := Low(Sizes) to High(Sizes) do
|
|
begin
|
|
B := Sizes[J];
|
|
if I <> J then
|
|
if A = B then
|
|
begin
|
|
Sizes[I] := -1;
|
|
Sizes[J] := -1;
|
|
end;
|
|
end;
|
|
end;
|
|
for I := Low(Sizes) to High(Sizes) do
|
|
if Sizes[I] > srcSize then
|
|
if OodleLZ_Decompress(src, srcSize, dst, Sizes[I]) = Sizes[I] then
|
|
begin
|
|
Res := Sizes[I];
|
|
Result := True;
|
|
break;
|
|
end;
|
|
end;
|
|
|
|
function GetOodleUS(Instance: Integer; Input: PByte; Pos: NativeInt;
|
|
StreamInfo: POodleSI; Output: _PrecompOutput; Add: _PrecompAdd;
|
|
Funcs: PPrecompFuncs): Integer;
|
|
const
|
|
MinSize = 64;
|
|
var
|
|
Buffer: PByte;
|
|
Res: Integer;
|
|
SI: _StrInfo1;
|
|
begin
|
|
Result := 0;
|
|
if StreamInfo^.Codec = 3 then
|
|
exit;
|
|
Buffer := Funcs^.Allocator(Instance, StreamInfo^.DSize);
|
|
if CustomLZ_Decompress(Input + Pos, Buffer, StreamInfo^.CSize,
|
|
StreamInfo^.DSize, $32, Res) then
|
|
begin
|
|
if (Res > MinSize) and (Res > StreamInfo^.CSize) then
|
|
begin
|
|
Output(Instance, Buffer, Res);
|
|
SI.Position := Pos;
|
|
SI.OldSize := StreamInfo^.CSize;
|
|
SI.NewSize := Res;
|
|
SI.Option := 0;
|
|
SetBits(SI.Option, OTradeOff, 13, 11);
|
|
case StreamInfo^.Codec of
|
|
1:
|
|
SetBits(SI.Option, KRAKEN_CODEC, 0, 5);
|
|
2:
|
|
if CodecEnabled[MERMAID_CODEC] then
|
|
SetBits(SI.Option, MERMAID_CODEC, 0, 5)
|
|
else
|
|
SetBits(SI.Option, SELKIE_CODEC, 0, 5);
|
|
3:
|
|
SetBits(SI.Option, LEVIATHAN_CODEC, 0, 5);
|
|
end;
|
|
if CodecEnabled[HYDRA_CODEC] then
|
|
SetBits(SI.Option, HYDRA_CODEC, 0, 5);
|
|
SetBits(SI.Option, Integer(StreamInfo^.HasCRC), 12, 1);
|
|
SI.Status := TStreamStatus.None;
|
|
Add(Instance, @SI, nil, nil);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function GetOodleCodec(Index: Integer): Integer;
|
|
begin
|
|
case Index of
|
|
LZNA_CODEC:
|
|
Result := 7;
|
|
KRAKEN_CODEC:
|
|
Result := 8;
|
|
MERMAID_CODEC:
|
|
Result := 9;
|
|
SELKIE_CODEC:
|
|
Result := 11;
|
|
HYDRA_CODEC:
|
|
Result := 12;
|
|
LEVIATHAN_CODEC:
|
|
Result := 13;
|
|
else
|
|
Result := 8;
|
|
end;
|
|
end;
|
|
|
|
function OodleInit(Command: PChar; Count: Integer;
|
|
Funcs: PPrecompFuncs): Boolean;
|
|
var
|
|
I: Integer;
|
|
Options: TArray<Integer>;
|
|
S: String;
|
|
X, Y: Integer;
|
|
begin
|
|
Result := True;
|
|
SetLength(SOList, Count);
|
|
for X := Low(SOList) to High(SOList) do
|
|
for Y := Low(SOList[X]) to High(SOList[X]) do
|
|
SOList[X, Y] := TSOList.Create([], TSOMethod.MTF);
|
|
for X := Low(CodecAvailable) to High(CodecAvailable) do
|
|
begin
|
|
CodecAvailable[X] := False;
|
|
CodecEnabled[X] := False;
|
|
end;
|
|
for X := Low(CodecAvailable) to High(CodecAvailable) do
|
|
CodecAvailable[X] := OodleDLL.DLLLoaded;
|
|
X := 0;
|
|
while Funcs^.GetCodec(Command, X, False) <> '' do
|
|
begin
|
|
S := Funcs^.GetCodec(Command, X, False);
|
|
for Y := Low(OodleCodecs) to High(OodleCodecs) do
|
|
if (CompareText(S, OodleCodecs[Y]) = 0) and OodleDLL.DLLLoaded then
|
|
begin
|
|
CodecEnabled[Y] := True;
|
|
if Funcs^.GetParam(Command, X, 'l') <> '' then
|
|
for I := Low(SOList) to High(SOList) do
|
|
SOList[I][Y].Update
|
|
([StrToInt(Funcs^.GetParam(Command, X, 'l'))], True);
|
|
if Funcs^.GetParam(Command, X, 't') <> '' then
|
|
OTradeOff := StrToInt(Funcs^.GetParam(Command, X, 't'));
|
|
end;
|
|
Inc(X);
|
|
end;
|
|
SetLength(Options, 0);
|
|
for I := 1 to 9 do
|
|
Insert(I, Options, Length(Options));
|
|
for X := Low(SOList) to High(SOList) do
|
|
for Y := Low(SOList[X]) to High(SOList[X]) do
|
|
if SOList[X, Y].Count = 0 then
|
|
SOList[X, Y].Update(Options);
|
|
end;
|
|
|
|
procedure OodleFree(Funcs: PPrecompFuncs);
|
|
var
|
|
X, Y: Integer;
|
|
begin
|
|
for X := Low(SOList) to High(SOList) do
|
|
for Y := Low(SOList[X]) to High(SOList[X]) do
|
|
SOList[X, Y].Free;
|
|
end;
|
|
|
|
function OodleParse(Command: PChar; Option: PInteger;
|
|
Funcs: PPrecompFuncs): Boolean;
|
|
var
|
|
S: String;
|
|
I, J: Integer;
|
|
begin
|
|
Result := False;
|
|
Option^ := 0;
|
|
SetBits(Option^, OTradeOff, 13, 11);
|
|
I := 0;
|
|
while Funcs^.GetCodec(Command, I, False) <> '' do
|
|
begin
|
|
S := Funcs^.GetCodec(Command, I, False);
|
|
for J := Low(OodleCodecs) to High(OodleCodecs) do
|
|
if (CompareText(S, OodleCodecs[J]) = 0) and OodleDLL.DLLLoaded then
|
|
begin
|
|
SetBits(Option^, J, 0, 5);
|
|
if Funcs^.GetParam(Command, I, 'l') <> '' then
|
|
SetBits(Option^, StrToInt(Funcs^.GetParam(Command, I, 'l')), 5, 7);
|
|
if String(Funcs^.GetParam(Command, I, 'c')) = '1' then
|
|
SetBits(Option^, 1, 12, 1);
|
|
if Funcs^.GetParam(Command, I, 't') <> '' then
|
|
SetBits(Option^, StrToInt(Funcs^.GetParam(Command, I, 't')), 13, 11);
|
|
Result := True;
|
|
end;
|
|
Inc(I);
|
|
end;
|
|
end;
|
|
|
|
procedure OodleScan1(Instance, Depth: Integer; Input: PByte;
|
|
Size, SizeEx: NativeInt; Output: _PrecompOutput; Add: _PrecompAdd;
|
|
Funcs: PPrecompFuncs);
|
|
var
|
|
Buffer: PByte;
|
|
Pos: NativeInt;
|
|
X: Integer;
|
|
Res: Integer;
|
|
SI: _StrInfo1;
|
|
OodleSI: TOodleSI;
|
|
DI1, DI2: TDepthInfo;
|
|
DS: TPrecompCmd;
|
|
begin
|
|
DI1 := Funcs^.GetDepthInfo(Instance);
|
|
DS := Funcs^.GetCodec(DI1.Codec, 0, False);
|
|
if DS <> '' then
|
|
begin
|
|
X := IndexTextW(@DS[0], OodleCodecs);
|
|
if (X < 0) or (DI1.OldSize <> SizeEx) then
|
|
exit;
|
|
if not CodecAvailable[X] then
|
|
exit;
|
|
if (X in [LZNA_CODEC, LEVIATHAN_CODEC]) and (DI1.NewSize <= 0) then
|
|
exit;
|
|
if DI1.NewSize <= 0 then
|
|
Res := O_MAXSIZE
|
|
else
|
|
Res := DI1.NewSize;
|
|
Buffer := Funcs^.Allocator(Instance, Res);
|
|
case X of
|
|
KRAKEN_CODEC, MERMAID_CODEC, SELKIE_CODEC, HYDRA_CODEC:
|
|
begin
|
|
if DI1.NewSize <= 0 then
|
|
begin
|
|
if not CustomLZ_Decompress(Input, Buffer, DI1.OldSize, Res, $32, Res)
|
|
then
|
|
Res := 0;
|
|
end
|
|
else
|
|
Res := OodleLZ_Decompress(Input, DI1.OldSize, Buffer, Res);
|
|
end;
|
|
else
|
|
begin
|
|
if DI1.NewSize > 0 then
|
|
Res := OodleLZ_Decompress(Input, DI1.OldSize, Buffer, Res)
|
|
else
|
|
Res := 0;
|
|
end;
|
|
end;
|
|
if (Res > DI1.OldSize) then
|
|
begin
|
|
Output(Instance, Buffer, Res);
|
|
SI.Position := 0;
|
|
SI.OldSize := DI1.OldSize;
|
|
SI.NewSize := Res;
|
|
SI.Option := 0;
|
|
SetBits(SI.Option, X, 0, 5);
|
|
if System.Pos(SPrecompSep2, DI1.Codec) > 0 then
|
|
SI.Status := TStreamStatus.Predicted
|
|
else
|
|
SI.Status := TStreamStatus.None;
|
|
DI2.Codec := Funcs^.GetDepthCodec(DI1.Codec);
|
|
DI2.OldSize := SI.NewSize;
|
|
DI2.NewSize := SI.NewSize;
|
|
Add(Instance, @SI, DI1.Codec, @DI2);
|
|
end;
|
|
exit;
|
|
end;
|
|
if BoolArray(CodecEnabled, False) then
|
|
exit;
|
|
Pos := 0;
|
|
while Pos < Size do
|
|
begin
|
|
GetOodleSI(Input + Pos, SizeEx - Pos, @OodleSI);
|
|
if (OodleSI.CSize > 0) then
|
|
if GetOodleUS(Instance, Input, Pos, @OodleSI, Output, Add, Funcs) > 0 then
|
|
begin
|
|
Inc(Pos, OodleSI.CSize);
|
|
continue;
|
|
end;
|
|
Inc(Pos);
|
|
end;
|
|
end;
|
|
|
|
function OodleScan2(Instance, Depth: Integer; Input: Pointer; Size: cardinal;
|
|
StreamInfo: PStrInfo2; Offset: PInteger; Output: _PrecompOutput;
|
|
Funcs: PPrecompFuncs): Boolean;
|
|
var
|
|
Buffer: PByte;
|
|
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
|
|
else
|
|
exit;
|
|
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,
|
|
$32, Res) then
|
|
begin
|
|
StreamInfo^.NewSize := Res;
|
|
Output(Instance, Buffer, Res);
|
|
Result := True;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function OodleProcess(Instance, Depth: Integer; OldInput, NewInput: Pointer;
|
|
StreamInfo: PStrInfo2; Output: _PrecompOutput; Funcs: PPrecompFuncs): Boolean;
|
|
var
|
|
Buffer: PByte;
|
|
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
|
|
if GetBits(StreamInfo^.Option, 5, 7) <> I then
|
|
continue;
|
|
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);
|
|
Res1 := OodleLZ_Compress(Y, NewInput, StreamInfo^.NewSize, Buffer, I,
|
|
@COptions);
|
|
Result := (Res1 = StreamInfo^.OldSize) and CompareMem(OldInput, Buffer,
|
|
StreamInfo^.OldSize);
|
|
if Result then
|
|
begin
|
|
SetBits(StreamInfo^.Option, I, 5, 7);
|
|
SOList[Instance][X].Add(I);
|
|
break;
|
|
end;
|
|
end;
|
|
if (Result = False) and ((StreamInfo^.Status = TStreamStatus.Predicted) or
|
|
(SOList[Instance][X].Count = 1)) then
|
|
begin
|
|
Buffer := Funcs^.Allocator(Instance, Res1 + Max(StreamInfo^.OldSize, Res1));
|
|
Res2 := PrecompEncodePatch(OldInput, StreamInfo^.OldSize, Buffer, Res1,
|
|
Buffer + Res1, Max(StreamInfo^.OldSize, Res1));
|
|
if (Res2 > 0) and ((Res2 / Max(StreamInfo^.OldSize, Res1)) <= DIFF_TOLERANCE)
|
|
then
|
|
begin
|
|
Output(Instance, Buffer + Res1, Res2);
|
|
SetBits(StreamInfo^.Option, 1, 31, 1);
|
|
SOList[Instance][X].Add(I);
|
|
Result := True;
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
function OodleRestore(Instance, Depth: Integer; Input, InputExt: Pointer;
|
|
StreamInfo: _StrInfo3; Output: _PrecompOutput; Funcs: PPrecompFuncs): Boolean;
|
|
var
|
|
Buffer: PByte;
|
|
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);
|
|
Res1 := OodleLZ_Compress(Y, Input, StreamInfo.NewSize, Buffer,
|
|
GetBits(StreamInfo.Option, 5, 7), @COptions);
|
|
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);
|
|
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.
|