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Diffstat (limited to 'lib/UnrarXLib/unpack20.cpp')
-rw-r--r--lib/UnrarXLib/unpack20.cpp371
1 files changed, 0 insertions, 371 deletions
diff --git a/lib/UnrarXLib/unpack20.cpp b/lib/UnrarXLib/unpack20.cpp
deleted file mode 100644
index 135a86502a..0000000000
--- a/lib/UnrarXLib/unpack20.cpp
+++ /dev/null
@@ -1,371 +0,0 @@
-#include "rar.hpp"
-
-void Unpack::CopyString20(unsigned int Length,unsigned int Distance)
-{
- LastDist=OldDist[OldDistPtr++ & 3]=Distance;
- LastLength=Length;
- DestUnpSize-=Length;
-
- unsigned int DestPtr=UnpPtr-Distance;
- if (DestPtr<MAXWINSIZE-300 && UnpPtr<MAXWINSIZE-300)
- {
- Window[UnpPtr++]=Window[DestPtr++];
- Window[UnpPtr++]=Window[DestPtr++];
- while (Length>2)
- {
- Length--;
- Window[UnpPtr++]=Window[DestPtr++];
- }
- }
- else
- while (Length--)
- {
- Window[UnpPtr]=Window[DestPtr++ & MAXWINMASK];
- UnpPtr=(UnpPtr+1) & MAXWINMASK;
- }
-}
-
-
-void Unpack::Unpack20(bool Solid)
-{
- static unsigned char LDecode[]={0,1,2,3,4,5,6,7,8,10,12,14,16,20,24,28,32,40,48,56,64,80,96,112,128,160,192,224};
- static unsigned char LBits[]= {0,0,0,0,0,0,0,0,1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5};
- static int DDecode[]={0,1,2,3,4,6,8,12,16,24,32,48,64,96,128,192,256,384,512,768,1024,1536,2048,3072,4096,6144,8192,12288,16384,24576,32768U,49152U,65536,98304,131072,196608,262144,327680,393216,458752,524288,589824,655360,720896,786432,851968,917504,983040};
- static unsigned char DBits[]= {0,0,0,0,1,1,2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16};
- static unsigned char SDDecode[]={0,4,8,16,32,64,128,192};
- static unsigned char SDBits[]= {2,2,3, 4, 5, 6, 6, 6};
- unsigned int Bits;
-
- if (Suspended)
- UnpPtr=WrPtr;
- else
- {
- UnpInitData(Solid);
- if (!UnpReadBuf())
- return;
- if (!Solid)
- if (!ReadTables20())
- return;
- --DestUnpSize;
- }
-
- while (is64plus(DestUnpSize))
- {
- if (UnpIO->bQuit) return;
-
- UnpPtr&=MAXWINMASK;
-
- if (InAddr>ReadTop-30)
- if (!UnpReadBuf())
- break;
- if (((WrPtr-UnpPtr) & MAXWINMASK)<270 && WrPtr!=UnpPtr)
- {
- OldUnpWriteBuf();
- if (Suspended)
- return;
- }
- if (UnpAudioBlock)
- {
- int AudioNumber=DecodeNumber((struct Decode *)&MD[UnpCurChannel]);
-
- if (AudioNumber==256)
- {
- if (!ReadTables20())
- break;
- continue;
- }
- Window[UnpPtr++]=DecodeAudio(AudioNumber);
- if (++UnpCurChannel==UnpChannels)
- UnpCurChannel=0;
- --DestUnpSize;
- continue;
- }
-
- int Number=DecodeNumber((struct Decode *)&LD);
- if (Number<256)
- {
- Window[UnpPtr++]=(byte)Number;
- --DestUnpSize;
- continue;
- }
- if (Number>269)
- {
- int Length=LDecode[Number-=270]+3;
- if ((Bits=LBits[Number])>0)
- {
- Length+=getbits()>>(16-Bits);
- addbits(Bits);
- }
-
- int DistNumber=DecodeNumber((struct Decode *)&DD);
- unsigned int Distance=DDecode[DistNumber]+1;
- if ((Bits=DBits[DistNumber])>0)
- {
- Distance+=getbits()>>(16-Bits);
- addbits(Bits);
- }
-
- if (Distance>=0x2000)
- {
- Length++;
- if (Distance>=0x40000L)
- Length++;
- }
-
- CopyString20(Length,Distance);
- continue;
- }
- if (Number==269)
- {
- if (!ReadTables20())
- break;
- continue;
- }
- if (Number==256)
- {
- CopyString20(LastLength,LastDist);
- continue;
- }
- if (Number<261)
- {
- unsigned int Distance=OldDist[(OldDistPtr-(Number-256)) & 3];
- int LengthNumber=DecodeNumber((struct Decode *)&RD);
- int Length=LDecode[LengthNumber]+2;
- if ((Bits=LBits[LengthNumber])>0)
- {
- Length+=getbits()>>(16-Bits);
- addbits(Bits);
- }
- if (Distance>=0x101)
- {
- Length++;
- if (Distance>=0x2000)
- {
- Length++;
- if (Distance>=0x40000)
- Length++;
- }
- }
- CopyString20(Length,Distance);
- continue;
- }
- if (Number<270)
- {
- unsigned int Distance=SDDecode[Number-=261]+1;
- if ((Bits=SDBits[Number])>0)
- {
- Distance+=getbits()>>(16-Bits);
- addbits(Bits);
- }
- CopyString20(2,Distance);
- continue;
- }
- }
- ReadLastTables();
- OldUnpWriteBuf();
-}
-
-
-bool Unpack::ReadTables20()
-{
- byte BitLength[BC20];
- unsigned char Table[MC20*4];
- int TableSize,N,I;
- if (InAddr>ReadTop-25)
- if (!UnpReadBuf())
- return(false);
- unsigned int BitField=getbits();
- UnpAudioBlock=(BitField & 0x8000);
-
- if (!(BitField & 0x4000))
- memset(UnpOldTable20,0,sizeof(UnpOldTable20));
- addbits(2);
-
- if (UnpAudioBlock)
- {
- UnpChannels=((BitField>>12) & 3)+1;
- if (UnpCurChannel>=UnpChannels)
- UnpCurChannel=0;
- addbits(2);
- TableSize=MC20*UnpChannels;
- }
- else
- TableSize=NC20+DC20+RC20;
-
- for (I=0;I<BC20;I++)
- {
- BitLength[I]=(byte)(getbits() >> 12);
- addbits(4);
- }
- MakeDecodeTables(BitLength,(struct Decode *)&BD,BC20);
- I=0;
- while (I<TableSize)
- {
- if (InAddr>ReadTop-5)
- if (!UnpReadBuf())
- return(false);
- int Number=DecodeNumber((struct Decode *)&BD);
- if (Number<16)
- {
- Table[I]=(Number+UnpOldTable20[I]) & 0xf;
- I++;
- }
- else
- if (Number==16)
- {
- N=(getbits() >> 14)+3;
- addbits(2);
- while (N-- > 0 && I<TableSize)
- {
- Table[I]=Table[I-1];
- I++;
- }
- }
- else
- {
- if (Number==17)
- {
- N=(getbits() >> 13)+3;
- addbits(3);
- }
- else
- {
- N=(getbits() >> 9)+11;
- addbits(7);
- }
- while (N-- > 0 && I<TableSize)
- Table[I++]=0;
- }
- }
- if (InAddr>ReadTop)
- return(true);
- if (UnpAudioBlock)
- for (I=0;I<UnpChannels;I++)
- MakeDecodeTables(&Table[I*MC20],(struct Decode *)&MD[I],MC20);
- else
- {
- MakeDecodeTables(&Table[0],(struct Decode *)&LD,NC20);
- MakeDecodeTables(&Table[NC20],(struct Decode *)&DD,DC20);
- MakeDecodeTables(&Table[NC20+DC20],(struct Decode *)&RD,RC20);
- }
- memcpy(UnpOldTable20,Table,sizeof(UnpOldTable20));
- return(true);
-}
-
-
-void Unpack::ReadLastTables()
-{
- if (ReadTop>=InAddr+5)
- {
- if (UnpAudioBlock)
- {
- if (DecodeNumber((struct Decode *)&MD[UnpCurChannel])==256)
- ReadTables20();
- }
- else if (DecodeNumber((struct Decode *)&LD)==269)
- ReadTables20();
- }
-}
-
-
-void Unpack::UnpInitData20(int Solid)
-{
- if (!Solid)
- {
- UnpChannelDelta=UnpCurChannel=0;
- UnpChannels=1;
- memset(AudV,0,sizeof(AudV));
- memset(UnpOldTable20,0,sizeof(UnpOldTable20));
- }
-}
-
-
-byte Unpack::DecodeAudio(int Delta)
-{
- struct AudioVariables *V=&AudV[UnpCurChannel];
- V->ByteCount++;
- V->D4=V->D3;
- V->D3=V->D2;
- V->D2=V->LastDelta-V->D1;
- V->D1=V->LastDelta;
- int PCh=8*V->LastChar+V->K1*V->D1+V->K2*V->D2+V->K3*V->D3+V->K4*V->D4+V->K5*UnpChannelDelta;
- PCh=(PCh>>3) & 0xFF;
-
- unsigned int Ch=PCh-Delta;
-
- int D=((signed char)Delta)<<3;
-
- V->Dif[0]+=abs(D);
- V->Dif[1]+=abs(D-V->D1);
- V->Dif[2]+=abs(D+V->D1);
- V->Dif[3]+=abs(D-V->D2);
- V->Dif[4]+=abs(D+V->D2);
- V->Dif[5]+=abs(D-V->D3);
- V->Dif[6]+=abs(D+V->D3);
- V->Dif[7]+=abs(D-V->D4);
- V->Dif[8]+=abs(D+V->D4);
- V->Dif[9]+=abs(D-UnpChannelDelta);
- V->Dif[10]+=abs(D+UnpChannelDelta);
-
- UnpChannelDelta=V->LastDelta=(signed char)(Ch-V->LastChar);
- V->LastChar=Ch;
-
- if ((V->ByteCount & 0x1F)==0)
- {
- unsigned int MinDif=V->Dif[0],NumMinDif=0;
- V->Dif[0]=0;
- for (unsigned int I=1;I<sizeof(V->Dif)/sizeof(V->Dif[0]);I++)
- {
- if (V->Dif[I]<MinDif)
- {
- MinDif=V->Dif[I];
- NumMinDif=I;
- }
- V->Dif[I]=0;
- }
- switch(NumMinDif)
- {
- case 1:
- if (V->K1>=-16)
- V->K1--;
- break;
- case 2:
- if (V->K1<16)
- V->K1++;
- break;
- case 3:
- if (V->K2>=-16)
- V->K2--;
- break;
- case 4:
- if (V->K2<16)
- V->K2++;
- break;
- case 5:
- if (V->K3>=-16)
- V->K3--;
- break;
- case 6:
- if (V->K3<16)
- V->K3++;
- break;
- case 7:
- if (V->K4>=-16)
- V->K4--;
- break;
- case 8:
- if (V->K4<16)
- V->K4++;
- break;
- case 9:
- if (V->K5>=-16)
- V->K5--;
- break;
- case 10:
- if (V->K5<16)
- V->K5++;
- break;
- }
- }
- return((byte)Ch);
-}
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-27 17:28:06 +0000