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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