| [8] | 1 | UNIT Unit6_imgfuncs;
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| 2 | INTERFACE
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| 3 | USES Math, Unit3_data;
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| 4 |
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| 5 | TYPE
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| 6 | TImgPackage=RECORD
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| 7 | imgx,imgy:Word;
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| 8 | imgdepth:Byte;
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| 9 | storetype:Byte;
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| 10 | datasize:LongWord;
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| 11 | raw_addr:LongWord;
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| 12 | imgdata:Tdata;
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| 13 | END;
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| 14 | FUNCTION ResizeImage(oldx,oldy:LongWord; imgdepth:Byte; data:Tdata):Tdata;
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| 15 | FUNCTION RevertImage(imgx,imgy,imgdepth:LongWord; imgdata:Tdata):Tdata;
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| 16 | FUNCTION DecompressImage(imgx,imgy:LongWord; imgdata:Tdata):Tdata;
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| 17 | FUNCTION ImgdataToBmp(imgx,imgy,imgdepth,storetype:LongWord; imgdata:Tdata):Tdata;
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| 18 | FUNCTION LoadImgData(fileid:LongWord):TImgPackage;
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| 19 |
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| 20 | IMPLEMENTATION
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| 21 | USES Unit2_functions;
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| 22 |
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| 23 |
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| 24 | FUNCTION ResizeImage(oldx,oldy:LongWord; imgdepth:Byte; data:Tdata):Tdata;
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| 25 | VAR
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| 26 | i,j:LongWord;
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| 27 | col,row,row_orig:LongWord;
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| 28 | temparray:Tdata;
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| 29 | BEGIN
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| 30 | SetLength(temparray,(oldx DIV 2)*(oldy DIV 2)*(imgdepth DIV 8));
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| 31 | row_orig:=0;
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| 32 | row:=0;
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| 33 | col:=0;
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| 34 | FOR i:=0 TO (oldx*oldy)-1 DO BEGIN
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| 35 | IF ((i MOD oldx)=0) AND (i>0) THEN BEGIN
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| 36 | Inc(row_orig);
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| 37 | IF (row_orig MOD 2)=0 THEN BEGIN
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| 38 | Inc(row);
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| 39 | col:=0;
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| 40 | END;
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| 41 | END;
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| 42 | IF (row_orig MOD 2)=0 THEN BEGIN
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| 43 | IF (i MOD 2)=0 THEN BEGIN
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| 44 | FOR j:=0 TO (imgdepth DIV 8)-1 DO
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| 45 | temparray[((row*(oldx DIV 2))+col)*(imgdepth DIV 8)+j]:=data[i*2+j];
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| 46 | Inc(col);
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| 47 | END;
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| 48 | END;
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| 49 | END;
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| 50 | Result:=temparray;
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| 51 | END;
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| 52 |
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| 53 |
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| 54 | FUNCTION RevertImage(imgx,imgy,imgdepth:LongWord; imgdata:Tdata):Tdata;
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| 55 | VAR
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| 56 | x,y,i:LongWord;
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| 57 | BEGIN
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| 58 | SetLength(Result,imgx*imgy*(imgdepth DIV 8));
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| 59 | FOR y:=0 TO imgy-1 DO
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| 60 | FOR x:=0 TO imgx-1 DO
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| 61 | FOR i:=0 TO (imgdepth DIV 8)-1 DO
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| 62 | Result[((imgx*(imgy-1-y)+x)*(imgdepth DIV 8))+i]:=
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| 63 | imgdata[(imgx*y+x)*(imgdepth DIV 8)+i];
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| 64 | END;
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| 65 |
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| 66 |
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| 67 | FUNCTION DecompressImage(imgx,imgy:LongWord; imgdata:Tdata):Tdata;
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| 68 | TYPE
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| 69 | Tcolor=RECORD
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| 70 | RGBb:Byte;
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| 71 | RGBg:Byte;
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| 72 | RGBr:Byte;
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| 73 | RGBa:Byte;
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| 74 | END;
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| 75 | VAR
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| 76 | i,j,x,y:LongWord;
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| 77 | color:Array[1..4] OF Tcolor;
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| 78 | pixel:Array[1..16] OF Byte;
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| 79 | BEGIN
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| 80 | x:=0;
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| 81 | y:=0;
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| 82 | SetLength(Result,imgx*imgy*4);
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| 83 | FOR i:=0 TO ((imgx*imgy) DIV 16)-1 DO BEGIN
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| 84 | Color[1].RGBb:=Floor(((imgdata[(i*8)+0]+imgdata[(i*8)+1]*256) AND $001F) / $001F * 255);
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| 85 | Color[1].RGBg:=Floor(((imgdata[(i*8)+0]+imgdata[(i*8)+1]*256) AND $07E0) / $07E0 * 255);
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| 86 | Color[1].RGBr:=Floor(((imgdata[(i*8)+0]+imgdata[(i*8)+1]*256) AND $F800) / $F800 * 255);
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| 87 | Color[1].RGBa:=255;
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| 88 | Color[2].RGBb:=Floor(((imgdata[(i*8)+2]+imgdata[(i*8)+3]*256) AND $001F) / $001F * 255);
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| 89 | Color[2].RGBg:=Floor(((imgdata[(i*8)+2]+imgdata[(i*8)+3]*256) AND $07E0) / $07E0 * 255);
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| 90 | Color[2].RGBr:=Floor(((imgdata[(i*8)+2]+imgdata[(i*8)+3]*256) AND $F800) / $F800 * 255);
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| 91 | Color[2].RGBa:=255;
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| 92 | Color[3].RGBb:=Floor( Color[1].RGBb/3*2 + Color[2].RGBb/3 );
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| 93 | Color[3].RGBg:=Floor( Color[1].RGBg/3*2 + Color[2].RGBg/3 );
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| 94 | Color[3].RGBr:=Floor( Color[1].RGBr/3*2 + Color[2].RGBr/3 );
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| 95 | Color[3].RGBa:=255;
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| 96 | Color[4].RGBb:=Floor( Color[1].RGBb/3 + Color[2].RGBb/3*2 );
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| 97 | Color[4].RGBg:=Floor( Color[1].RGBg/3 + Color[2].RGBg/3*2 );
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| 98 | Color[4].RGBr:=Floor( Color[1].RGBr/3 + Color[2].RGBr/3*2 );
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| 99 | Color[4].RGBa:=255;
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| 100 | Pixel[1]:=Floor( (imgdata[(i*8)+4] AND $C0) / $40 + 1 );
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| 101 | Pixel[2]:=Floor( (imgdata[(i*8)+4] AND $30) / $10 + 1 );
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| 102 | Pixel[3]:=Floor( (imgdata[(i*8)+4] AND $0C) / $04 + 1 );
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| 103 | Pixel[4]:=Floor( (imgdata[(i*8)+4] AND $03) + 1 );
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| 104 | Pixel[5]:=Floor( (imgdata[(i*8)+5] AND $C0) / $40 + 1 );
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| 105 | Pixel[6]:=Floor( (imgdata[(i*8)+5] AND $30) / $10 + 1 );
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| 106 | Pixel[7]:=Floor( (imgdata[(i*8)+5] AND $0C) / $04 + 1 );
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| 107 | Pixel[8]:=Floor( (imgdata[(i*8)+5] AND $03) + 1 );
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| 108 | Pixel[9]:=Floor( (imgdata[(i*8)+6] AND $C0) / $40 + 1 );
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| 109 | Pixel[10]:=Floor( (imgdata[(i*8)+6] AND $30) / $10 + 1 );
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| 110 | Pixel[11]:=Floor( (imgdata[(i*8)+6] AND $0C) / $04 + 1 );
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| 111 | Pixel[12]:=Floor( (imgdata[(i*8)+6] AND $03) + 1 );
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| 112 | Pixel[13]:=Floor( (imgdata[(i*8)+7] AND $C0) / $40 + 1 );
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| 113 | Pixel[14]:=Floor( (imgdata[(i*8)+7] AND $30) / $10 + 1 );
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| 114 | Pixel[15]:=Floor( (imgdata[(i*8)+7] AND $0C) / $04 + 1 );
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| 115 | Pixel[16]:=Floor( (imgdata[(i*8)+7] AND $03) + 1 );
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| 116 | FOR j:=0 TO 3 DO BEGIN
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| 117 | Result[((y+3)*imgx+x+j)*3+0]:=Color[Pixel[16-j]].RGBb;
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| 118 | Result[((y+3)*imgx+x+j)*3+1]:=Color[Pixel[16-j]].RGBg;
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| 119 | Result[((y+3)*imgx+x+j)*3+2]:=Color[Pixel[16-j]].RGBr;
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| 120 | END;
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| 121 | FOR j:=0 TO 3 DO BEGIN
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| 122 | Result[((y+2)*imgx+x+j)*3+0]:=Color[Pixel[12-j]].RGBb;
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| 123 | Result[((y+2)*imgx+x+j)*3+1]:=Color[Pixel[12-j]].RGBg;
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| 124 | Result[((y+2)*imgx+x+j)*3+2]:=Color[Pixel[12-j]].RGBr;
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| 125 | END;
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| 126 | FOR j:=0 TO 3 DO BEGIN
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| 127 | Result[((y+1)*imgx+x+j)*3+0]:=Color[Pixel[8-j]].RGBb;
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| 128 | Result[((y+1)*imgx+x+j)*3+1]:=Color[Pixel[8-j]].RGBg;
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| 129 | Result[((y+1)*imgx+x+j)*3+2]:=Color[Pixel[8-j]].RGBr;
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| 130 | END;
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| 131 | FOR j:=0 TO 3 DO BEGIN
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| 132 | Result[((y+0)*imgx+x+j)*3+0]:=Color[Pixel[4-j]].RGBb;
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| 133 | Result[((y+0)*imgx+x+j)*3+1]:=Color[Pixel[4-j]].RGBg;
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| 134 | Result[((y+0)*imgx+x+j)*3+2]:=Color[Pixel[4-j]].RGBr;
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| 135 | END;
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| 136 | x:=x+4;
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| 137 | IF x=imgx THEN BEGIN
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| 138 | y:=y+4;
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| 139 | x:=0;
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| 140 | END;
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| 141 | END;
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| 142 | END;
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| 143 |
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| 144 |
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| 145 | FUNCTION ImgdataToBmp(imgx,imgy,imgdepth,storetype:LongWord; imgdata:Tdata):Tdata;
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| 146 | CONST BMPheader:Array[0..53] OF Byte=
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| 147 | ($42,$4D,0,0,0,0,0,0,0,0,54,0,0,0,
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| 148 | 40,0,0,0,0,0,0,0,0,0,0,0,1,0,$18,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);
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| 149 | VAR
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| 150 | i,x,y:LongWord;
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| 151 | BEGIN
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| 152 | CASE storetype OF
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| 153 | 0: BEGIN
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| 154 | SetLength(Result,imgx*imgy*3);
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| 155 | FOR y:=0 TO imgy-1 DO BEGIN
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| 156 | FOR x:=0 TO imgx-1 DO BEGIN
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| 157 | Result[((imgx*y+x)*3)+0]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $000F ) / $000F * 255);
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| 158 | Result[((imgx*y+x)*3)+1]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $00F0 ) / $00F0 * 255);
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| 159 | Result[((imgx*y+x)*3)+2]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $0F00 ) / $0F00 * 255);
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| 160 | END;
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| 161 | END;
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| 162 | END;
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| 163 | 1,2,8: BEGIN
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| 164 | SetLength(Result,imgx*imgy*3);
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| 165 | FOR y:=0 TO imgy-1 DO BEGIN
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| 166 | FOR x:=0 TO imgx-1 DO BEGIN
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| 167 | Result[((imgx*y+x)*3)+0]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $001F ) / $001F * 255);
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| 168 | Result[((imgx*y+x)*3)+1]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $03E0 ) / $03E0 * 255);
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| 169 | Result[((imgx*y+x)*3)+2]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $7C00 ) / $7C00 * 255);
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| 170 | END;
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| 171 | END;
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| 172 | END;
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| 173 | 9: BEGIN
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| 174 | Result:=DecompressImage(imgx,imgy,imgdata);
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| 175 | END;
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| 176 | END;
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| 177 | Result:=RevertImage(imgx,imgy,24,Result);
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| 178 | SetLength(Result,imgx*imgy*3+54);
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| 179 | FOR i:=High(Result)-54 DOWNTO 0 DO Result[i+54]:=Result[i];
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| 180 |
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| 181 | FOR i:=0 TO High(BMPheader) DO Result[i]:=BMPheader[i];
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| 182 | Result[2]:=((imgx*imgy*3+54) AND $000000FF);
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| 183 | Result[3]:=((imgx*imgy*3+54) AND $0000FF00) DIV $100;
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| 184 | Result[4]:=((imgx*imgy*3+54) AND $00FF0000) DIV $10000;
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| 185 | Result[5]:=((imgx*imgy*3+54) AND $FF000000) DIV $1000000;
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| 186 | Result[18]:=(imgx AND $000000FF) DIV $1;
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| 187 | Result[19]:=(imgx AND $0000FF00) DIV $100;
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| 188 | Result[20]:=(imgx AND $00FF0000) DIV $10000;
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| 189 | Result[21]:=(imgx AND $FF000000) DIV $1000000;
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| 190 | Result[22]:=(imgy AND $000000FF) DIV $1;
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| 191 | Result[23]:=(imgy AND $0000FF00) DIV $100;
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| 192 | Result[24]:=(imgy AND $00FF0000) DIV $10000;
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| 193 | Result[25]:=(imgy AND $FF000000) DIV $1000000;
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| 194 | Result[34]:=((imgx*imgy*3) AND $000000FF) DIV $1;
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| 195 | Result[35]:=((imgx*imgy*3) AND $0000FF00) DIV $100;
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| 196 | Result[36]:=((imgx*imgy*3) AND $00FF0000) DIV $10000;
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| 197 | Result[37]:=((imgx*imgy*3) AND $FF000000) DIV $1000000;
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| 198 | END;
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| 199 |
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| 200 | FUNCTION LoadImgData(fileid:LongWord):TImgPackage;
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| 201 | { VAR
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| 202 | raw_addr:LongWord;
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| 203 | storetype:Byte;
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| 204 | imgx,imgy:Word;
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| 205 | imgdepth:Byte;
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| 206 | data:Tdata;
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| 207 | datasize:LongWord;}
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| 208 | BEGIN
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| 209 | LoadDatFilePart(fileid,$9C,SizeOf(Result.raw_addr),@Result.raw_addr);
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| 210 | LoadDatFilePart(fileid,$8C,SizeOf(Result.imgx),@Result.imgx);
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| 211 | LoadDatFilePart(fileid,$8E,SizeOf(Result.imgy),@Result.imgy);
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| 212 | LoadDatFilePart(fileid,$90,SizeOf(Result.storetype),@Result.storetype);
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| 213 |
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| 214 | CASE Result.storetype OF
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| 215 | 0,1,2: BEGIN
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| 216 | Result.datasize:=Result.imgx*Result.imgy*2;
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| 217 | Result.imgdepth:=16;
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| 218 | END;
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| 219 | 8: BEGIN
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| 220 | Result.datasize:=Result.imgx*Result.imgy*4;
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| 221 | Result.imgdepth:=32;
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| 222 | END;
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| 223 | 9: BEGIN
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| 224 | Result.datasize:=Result.imgx*Result.imgy DIV 2;
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| 225 | Result.imgdepth:=16;
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| 226 | END;
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| 227 | ELSE
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| 228 | Exit;
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| 229 | END;
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| 230 | SetLength(Result.imgdata,Result.datasize);
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| 231 |
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| 232 | LoadRawFilePart(Result.raw_addr,Result.datasize,@Result.imgdata[0]);
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| 233 | END;
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| 234 |
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| 235 | END.
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