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(Форматируйте его, пожалуйста, как почту - короткими строками
Еnter в конце строки, пустая строка между параграфами).
> Попробуй вот этот выриант WFC. Скорость где-то в 4.5 раза ниже, чем у MTF, зато степень сжатия выше на 2-3%. > #define WFC_MaxByte 256 > #define WFC_Val0 131072 > #define WFC_Val1 114688 > #define WFC_Val2 7272 > #define WFC_Val3 4240 > #define WFC_Val4 2364 > #define WFC_Val5 1263 > #define WFC_Val6 649 > #define WFC_Val7 320 > #define WFC_Val8 153 > #define WFC_Val9 70 > #define WFC_Val10 31 > #define WFC_Val11 14 > #define WFC_Val12 8 > #define WFC_Pos1 1 > #define WFC_Pos2 2 > #define WFC_Pos3 4 > #define WFC_Pos4 8 > #define WFC_Pos5 16 > #define WFC_Pos6 32 > #define WFC_Pos7 64 > #define WFC_Pos8 128 > #define WFC_Pos9 256 > #define WFC_Pos10 512 > #define WFC_Pos11 1024 > #define WFC_Pos12 2048 > #define WFC_Init() \ > uint8 * TmpBuf=(uint8 *)malloc(Size); \ > if (TmpBuf==NULL) return (GRZ_NOT_ENOUGH_MEMORY); \ > \ > sint32 WFC_List[WFC_MaxByte+1]; \ > sint32 Char2Index[WFC_MaxByte+1]; \ > sint32 CharWeight[WFC_MaxByte+1]; \ > sint32 i; \ > for (i=0;iW) \ > { \ > Char2Index[WFC_List[j]=WFC_List[j+1]]=j; \ > j++; \ > } \ > WFC_List[j]=c; \ > Char2Index[c]=j; \ > } > #define Update_Weight_Full(Weight,Pos) \ > if (i>=Pos) \ > { \ > uint8 c=TmpBuf[i-Pos];Update_Weight(c,Weight); \ > } \ > sint32 WFC_Encode(uint8 * Input,sint32 Size) > { > WFC_Init(); > for (i=0;(i<Size)&&(i<WFC_Pos12);i++) > { > uint8 c=TmpBuf[i]=Input[i]; > Input[i]=Char2Index[c]; > Update_Weight0(c); > Update_Weight_Full(WFC_Val1,WFC_Pos1); > Update_Weight_Full(WFC_Val2,WFC_Pos2); > Update_Weight_Full(WFC_Val3,WFC_Pos3); > Update_Weight_Full(WFC_Val4,WFC_Pos4); > Update_Weight_Full(WFC_Val5,WFC_Pos5); > Update_Weight_Full(WFC_Val6,WFC_Pos6); > Update_Weight_Full(WFC_Val7,WFC_Pos7); > Update_Weight_Full(WFC_Val8,WFC_Pos8); > Update_Weight_Full(WFC_Val9,WFC_Pos9); > Update_Weight_Full(WFC_Val10,WFC_Pos10); > Update_Weight_Full(WFC_Val11,WFC_Pos11); > Update_Weight_Full(WFC_Val12,WFC_Pos12); > } > for (;i<Size;i++) > { > uint8 c=TmpBuf[i]=Input[i]; > Input[i]=Char2Index[c]; > Update_Weight0(c); > c=TmpBuf[i-WFC_Pos1]; Update_Weight(c,WFC_Val1); > c=TmpBuf[i-WFC_Pos2]; Update_Weight(c,WFC_Val2); > c=TmpBuf[i-WFC_Pos3]; Update_Weight(c,WFC_Val3); > c=TmpBuf[i-WFC_Pos4]; Update_Weight(c,WFC_Val4); > c=TmpBuf[i-WFC_Pos5]; Update_Weight(c,WFC_Val5); > c=TmpBuf[i-WFC_Pos6]; Update_Weight(c,WFC_Val6); > c=TmpBuf[i-WFC_Pos7]; Update_Weight(c,WFC_Val7); > c=TmpBuf[i-WFC_Pos8]; Update_Weight(c,WFC_Val8); > c=TmpBuf[i-WFC_Pos9]; Update_Weight(c,WFC_Val9); > c=TmpBuf[i-WFC_Pos10]; Update_Weight(c,WFC_Val10); > c=TmpBuf[i-WFC_Pos11]; Update_Weight(c,WFC_Val11); > c=TmpBuf[i-WFC_Pos12]; Update_Weight(c,WFC_Val12); > } > WFC_Finish(); > return (GRZ_NO_ERROR); > } > sint32 WFC_Decode(uint8 * Input, sint32 Size) > { > WFC_Init(); > for (i=0;(i<Size)&&(i<WFC_Pos12);i++) > { > uint8 c=WFC_List[Input[i]];TmpBuf[i]=Input[i]=c; > Update_Weight0(c); > Update_Weight_Full(WFC_Val1,WFC_Pos1); > Update_Weight_Full(WFC_Val2,WFC_Pos2); > Update_Weight_Full(WFC_Val3,WFC_Pos3); > Update_Weight_Full(WFC_Val4,WFC_Pos4); > Update_Weight_Full(WFC_Val5,WFC_Pos5); > Update_Weight_Full(WFC_Val6,WFC_Pos6); > Update_Weight_Full(WFC_Val7,WFC_Pos7); > Update_Weight_Full(WFC_Val8,WFC_Pos8); > Update_Weight_Full(WFC_Val9,WFC_Pos9); > Update_Weight_Full(WFC_Val10,WFC_Pos10); > Update_Weight_Full(WFC_Val11,WFC_Pos11); > Update_Weight_Full(WFC_Val12,WFC_Pos12); > } > for (;i<Size;i++) > { > uint8 c=WFC_List[Input[i]];TmpBuf[i]=Input[i]=c; > Update_Weight0(c); > c=TmpBuf[i-WFC_Pos1]; Update_Weight(c,WFC_Val1); > c=TmpBuf[i-WFC_Pos2]; Update_Weight(c,WFC_Val2); > c=TmpBuf[i-WFC_Pos3]; Update_Weight(c,WFC_Val3); > c=TmpBuf[i-WFC_Pos4]; Update_Weight(c,WFC_Val4); > c=TmpBuf[i-WFC_Pos5]; Update_Weight(c,WFC_Val5); > c=TmpBuf[i-WFC_Pos6]; Update_Weight(c,WFC_Val6); > c=TmpBuf[i-WFC_Pos7]; Update_Weight(c,WFC_Val7); > c=TmpBuf[i-WFC_Pos8]; Update_Weight(c,WFC_Val8); > c=TmpBuf[i-WFC_Pos9]; Update_Weight(c,WFC_Val9); > c=TmpBuf[i-WFC_Pos10]; Update_Weight(c,WFC_Val10); > c=TmpBuf[i-WFC_Pos11]; Update_Weight(c,WFC_Val11); > c=TmpBuf[i-WFC_Pos12]; Update_Weight(c,WFC_Val12); > } > WFC_Finish(); > return (GRZ_NO_ERROR); > } > sint32 GRZip_AWFC_Encode(uint8 * Input, sint32 Size) > { > uint8 * TmpBuf=(uint8 *)malloc(Size); > if (TmpBuf==NULL) return (GRZ_NOT_ENOUGH_MEMORY); > > sint32 i,TmpBufSize=0; > uint8 Pred=0; > for (i=0;i<Size;i++) > if (Input[i]!=Pred) Pred=TmpBuf[TmpBufSize++]=Input[i]; > if (WFC_Encode(TmpBuf,TmpBufSize)==GRZ_NOT_ENOUGH_MEMORY) > { > free(TmpBuf); > return (GRZ_NOT_ENOUGH_MEMORY); > } > Pred=0; TmpBufSize=0; > for (i=0;i<Size;i++) > if (Input[i]!=Pred) > { > Pred=Input[i]; > Input[i]=TmpBuf[TmpBufSize++]; > } > else > Input[i]=0; > free(TmpBuf); > return (GRZ_NO_ERROR); > } > sint32 GRZip_AWFC_Decode(uint8 * Input,sint32 Size) > { > uint8 * TmpBuf=(uint8 *)malloc(Size); > if (TmpBuf==NULL) return (GRZ_NOT_ENOUGH_MEMORY); > > uint8 Pred=0; > sint32 i,TmpBufSize=0; > for (i=0;i<Size;i++) > if (Input[i]) TmpBuf[TmpBufSize++]=Input[i]; > if (WFC_Decode(TmpBuf,TmpBufSize)==GRZ_NOT_ENOUGH_MEMORY) > { > free(TmpBuf); > return (GRZ_NOT_ENOUGH_MEMORY); > } > TmpBufSize=0; > for (i=0;i<Size;i++) > if (Input[i]==0) Input[i]=Pred; > else > Pred=Input[i]=TmpBuf[TmpBufSize++]; > free(TmpBuf); > return (GRZ_NO_ERROR); > } > #undef WFC_MaxByte > #undef WFC_Init > #undef WFC_Finish > #undef Update_Weight > #undef Update_Weight0 > #undef Update_Weight_Full > #undef WFC_Val0 > #undef WFC_Val1 > #undef WFC_Val2 > #undef WFC_Val3 > #undef WFC_Val4 > #undef WFC_Val5 > #undef WFC_Val6 > #undef WFC_Val7 > #undef WFC_Val8 > #undef WFC_Val9 > #undef WFC_Val10 > #undef WFC_Val11 > #undef WFC_Val12 > #undef WFC_Pos1 > #undef WFC_Pos2 > #undef WFC_Pos3 > #undef WFC_Pos4 > #undef WFC_Pos5 > #undef WFC_Pos6 > #undef WFC_Pos7 > #undef WFC_Pos8 > #undef WFC_Pos9 > #undef WFC_Pos10 > #undef WFC_Pos11 > #undef WFC_Pos12

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