source: oup/releases/0.13a/Unit6_imgfuncs.pas@ 164

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1UNIT Unit6_imgfuncs;
2INTERFACE
3USES Math, Dialogs, SysUtils, Unit3_data;
4
5TYPE
6 TImgPackage=RECORD
7 imgx,imgy:Word;
8 imgdepth:Byte;
9 storetype:Byte;
10 datasize:LongWord;
11 raw_addr:LongWord;
12 imgdata:Tdata;
13 END;
14FUNCTION ResizeImage(oldx,oldy:LongWord; imgdepth:Byte; data:Tdata):Tdata;
15FUNCTION RevertImage(imgx,imgy,imgdepth:LongWord; imgdata:Tdata):Tdata;
16FUNCTION DecompressImage(imgx,imgy:LongWord; imgdata:Tdata):Tdata;
17FUNCTION ImgdataToBmp(imgx,imgy,imgdepth,storetype:LongWord; imgdata:Tdata):Tdata;
18FUNCTION BmpToImgdata(bmpdata:Tdata):TImgPackage;
19FUNCTION LoadTXMBconnected(fileid:LongWord):TImgPackage;
20FUNCTION LoadImgData(fileid:LongWord):TImgPackage;
21FUNCTION GetImageDataSize(imgx,imgy,imgdepth:Word; fading:Boolean):LongWord;
22FUNCTION CreateFadedImage(image:TImgPackage):Tdata;
23
24IMPLEMENTATION
25USES Unit2_functions;
26
27
28FUNCTION ResizeImage(oldx,oldy:LongWord; imgdepth:Byte; data:Tdata):Tdata;
29 VAR
30 i,j:LongWord;
31 col,row,row_orig:LongWord;
32 temparray:Tdata;
33 BEGIN
34 SetLength(temparray,(oldx DIV 2)*(oldy DIV 2)*(imgdepth DIV 8));
35 row_orig:=0;
36 row:=0;
37 col:=0;
38 FOR i:=0 TO (oldx*oldy)-1 DO BEGIN
39 IF ((i MOD oldx)=0) AND (i>0) THEN BEGIN
40 Inc(row_orig);
41 IF (row_orig MOD 2)=0 THEN BEGIN
42 Inc(row);
43 col:=0;
44 END;
45 END;
46 IF (row_orig MOD 2)=0 THEN BEGIN
47 IF (i MOD 2)=0 THEN BEGIN
48 FOR j:=0 TO (imgdepth DIV 8)-1 DO
49 temparray[((row*(oldx DIV 2))+col)*(imgdepth DIV 8)+j]:=data[i*2+j];
50 Inc(col);
51 END;
52 END;
53 END;
54 Result:=temparray;
55 END;
56
57
58FUNCTION RevertImage(imgx,imgy,imgdepth:LongWord; imgdata:Tdata):Tdata;
59 VAR
60 x,y,i:LongWord;
61 BEGIN
62 SetLength(Result,imgx*imgy*(imgdepth DIV 8));
63 FOR y:=0 TO imgy-1 DO
64 FOR x:=0 TO imgx-1 DO
65 FOR i:=0 TO (imgdepth DIV 8)-1 DO
66 Result[((imgx*(imgy-1-y)+x)*(imgdepth DIV 8))+i]:=
67 imgdata[(imgx*y+x)*(imgdepth DIV 8)+i];
68 END;
69
70
71FUNCTION DecompressImage(imgx,imgy:LongWord; imgdata:Tdata):Tdata;
72 TYPE
73 Tcolor=RECORD
74 RGBb:Byte;
75 RGBg:Byte;
76 RGBr:Byte;
77 RGBa:Byte;
78 END;
79 VAR
80 i,j,x,y:LongWord;
81 color:Array[1..4] OF Tcolor;
82 pixel:Array[1..16] OF Byte;
83 BEGIN
84 x:=0;
85 y:=0;
86 SetLength(Result,imgx*imgy*4);
87 FOR i:=0 TO ((imgx*imgy) DIV 16)-1 DO BEGIN
88 Color[1].RGBb:=Floor(((imgdata[(i*8)+0]+imgdata[(i*8)+1]*256) AND $001F) / $001F * 255);
89 Color[1].RGBg:=Floor(((imgdata[(i*8)+0]+imgdata[(i*8)+1]*256) AND $07E0) / $07E0 * 255);
90 Color[1].RGBr:=Floor(((imgdata[(i*8)+0]+imgdata[(i*8)+1]*256) AND $F800) / $F800 * 255);
91 Color[1].RGBa:=255;
92 Color[2].RGBb:=Floor(((imgdata[(i*8)+2]+imgdata[(i*8)+3]*256) AND $001F) / $001F * 255);
93 Color[2].RGBg:=Floor(((imgdata[(i*8)+2]+imgdata[(i*8)+3]*256) AND $07E0) / $07E0 * 255);
94 Color[2].RGBr:=Floor(((imgdata[(i*8)+2]+imgdata[(i*8)+3]*256) AND $F800) / $F800 * 255);
95 Color[2].RGBa:=255;
96 Color[3].RGBb:=Floor( Color[1].RGBb/3*2 + Color[2].RGBb/3 );
97 Color[3].RGBg:=Floor( Color[1].RGBg/3*2 + Color[2].RGBg/3 );
98 Color[3].RGBr:=Floor( Color[1].RGBr/3*2 + Color[2].RGBr/3 );
99 Color[3].RGBa:=255;
100 Color[4].RGBb:=Floor( Color[1].RGBb/3 + Color[2].RGBb/3*2 );
101 Color[4].RGBg:=Floor( Color[1].RGBg/3 + Color[2].RGBg/3*2 );
102 Color[4].RGBr:=Floor( Color[1].RGBr/3 + Color[2].RGBr/3*2 );
103 Color[4].RGBa:=255;
104 Pixel[1]:=Floor( (imgdata[(i*8)+4] AND $C0) / $40 + 1 );
105 Pixel[2]:=Floor( (imgdata[(i*8)+4] AND $30) / $10 + 1 );
106 Pixel[3]:=Floor( (imgdata[(i*8)+4] AND $0C) / $04 + 1 );
107 Pixel[4]:=Floor( (imgdata[(i*8)+4] AND $03) + 1 );
108 Pixel[5]:=Floor( (imgdata[(i*8)+5] AND $C0) / $40 + 1 );
109 Pixel[6]:=Floor( (imgdata[(i*8)+5] AND $30) / $10 + 1 );
110 Pixel[7]:=Floor( (imgdata[(i*8)+5] AND $0C) / $04 + 1 );
111 Pixel[8]:=Floor( (imgdata[(i*8)+5] AND $03) + 1 );
112 Pixel[9]:=Floor( (imgdata[(i*8)+6] AND $C0) / $40 + 1 );
113 Pixel[10]:=Floor( (imgdata[(i*8)+6] AND $30) / $10 + 1 );
114 Pixel[11]:=Floor( (imgdata[(i*8)+6] AND $0C) / $04 + 1 );
115 Pixel[12]:=Floor( (imgdata[(i*8)+6] AND $03) + 1 );
116 Pixel[13]:=Floor( (imgdata[(i*8)+7] AND $C0) / $40 + 1 );
117 Pixel[14]:=Floor( (imgdata[(i*8)+7] AND $30) / $10 + 1 );
118 Pixel[15]:=Floor( (imgdata[(i*8)+7] AND $0C) / $04 + 1 );
119 Pixel[16]:=Floor( (imgdata[(i*8)+7] AND $03) + 1 );
120 FOR j:=0 TO 3 DO BEGIN
121 Result[((y+3)*imgx+x+j)*3+0]:=Color[Pixel[16-j]].RGBb;
122 Result[((y+3)*imgx+x+j)*3+1]:=Color[Pixel[16-j]].RGBg;
123 Result[((y+3)*imgx+x+j)*3+2]:=Color[Pixel[16-j]].RGBr;
124 END;
125 FOR j:=0 TO 3 DO BEGIN
126 Result[((y+2)*imgx+x+j)*3+0]:=Color[Pixel[12-j]].RGBb;
127 Result[((y+2)*imgx+x+j)*3+1]:=Color[Pixel[12-j]].RGBg;
128 Result[((y+2)*imgx+x+j)*3+2]:=Color[Pixel[12-j]].RGBr;
129 END;
130 FOR j:=0 TO 3 DO BEGIN
131 Result[((y+1)*imgx+x+j)*3+0]:=Color[Pixel[8-j]].RGBb;
132 Result[((y+1)*imgx+x+j)*3+1]:=Color[Pixel[8-j]].RGBg;
133 Result[((y+1)*imgx+x+j)*3+2]:=Color[Pixel[8-j]].RGBr;
134 END;
135 FOR j:=0 TO 3 DO BEGIN
136 Result[((y+0)*imgx+x+j)*3+0]:=Color[Pixel[4-j]].RGBb;
137 Result[((y+0)*imgx+x+j)*3+1]:=Color[Pixel[4-j]].RGBg;
138 Result[((y+0)*imgx+x+j)*3+2]:=Color[Pixel[4-j]].RGBr;
139 END;
140 x:=x+4;
141 IF x=imgx THEN BEGIN
142 y:=y+4;
143 x:=0;
144 END;
145 END;
146 END;
147
148
149FUNCTION ImgdataToBmp(imgx,imgy,imgdepth,storetype:LongWord; imgdata:Tdata):Tdata;
150 CONST BMPheader:Array[0..53] OF Byte=
151 ($42,$4D,0,0,0,0,0,0,0,0,54,0,0,0,
152 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);
153 VAR
154 i,x,y:LongWord;
155 BEGIN
156 CASE storetype OF
157 0: BEGIN
158 SetLength(Result,imgx*imgy*3);
159 FOR y:=0 TO imgy-1 DO BEGIN
160 FOR x:=0 TO imgx-1 DO BEGIN
161 Result[((imgx*y+x)*3)+0]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $000F ) / $000F * 255);
162 Result[((imgx*y+x)*3)+1]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $00F0 ) / $00F0 * 255);
163 Result[((imgx*y+x)*3)+2]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $0F00 ) / $0F00 * 255);
164 END;
165 END;
166 END;
167 1,2,8: BEGIN
168 SetLength(Result,imgx*imgy*3);
169 FOR y:=0 TO imgy-1 DO BEGIN
170 FOR x:=0 TO imgx-1 DO BEGIN
171 Result[((imgx*y+x)*3)+0]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $001F ) / $001F * 255);
172 Result[((imgx*y+x)*3)+1]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $03E0 ) / $03E0 * 255);
173 Result[((imgx*y+x)*3)+2]:=Floor( ( (imgdata[(imgx*y+x)*2]+imgdata[(imgx*y+x)*2+1]*256) AND $7C00 ) / $7C00 * 255);
174 END;
175 END;
176 END;
177 9: BEGIN
178 Result:=DecompressImage(imgx,imgy,imgdata);
179 END;
180 END;
181 Result:=RevertImage(imgx,imgy,24,Result);
182 SetLength(Result,imgx*imgy*3+54);
183 FOR i:=High(Result)-54 DOWNTO 0 DO Result[i+54]:=Result[i];
184
185 FOR i:=0 TO High(BMPheader) DO Result[i]:=BMPheader[i];
186 Result[2]:=((imgx*imgy*3+54) AND $000000FF);
187 Result[3]:=((imgx*imgy*3+54) AND $0000FF00) DIV $100;
188 Result[4]:=((imgx*imgy*3+54) AND $00FF0000) DIV $10000;
189 Result[5]:=((imgx*imgy*3+54) AND $FF000000) DIV $1000000;
190 Result[18]:=(imgx AND $000000FF) DIV $1;
191 Result[19]:=(imgx AND $0000FF00) DIV $100;
192 Result[20]:=(imgx AND $00FF0000) DIV $10000;
193 Result[21]:=(imgx AND $FF000000) DIV $1000000;
194 Result[22]:=(imgy AND $000000FF) DIV $1;
195 Result[23]:=(imgy AND $0000FF00) DIV $100;
196 Result[24]:=(imgy AND $00FF0000) DIV $10000;
197 Result[25]:=(imgy AND $FF000000) DIV $1000000;
198 Result[34]:=((imgx*imgy*3) AND $000000FF) DIV $1;
199 Result[35]:=((imgx*imgy*3) AND $0000FF00) DIV $100;
200 Result[36]:=((imgx*imgy*3) AND $00FF0000) DIV $10000;
201 Result[37]:=((imgx*imgy*3) AND $FF000000) DIV $1000000;
202 END;
203
204FUNCTION BmpToImgdata(bmpdata:Tdata):TImgPackage;
205 VAR
206 x,y:LongWord;
207 r24,g24,b24:Word;
208 r16,g16,b16:Word;
209 gesamt:Word;
210 BEGIN
211 Result.imgdepth:=0;
212 IF NOT((bmpdata[00]=$42) AND (bmpdata[01]=$4D)) THEN BEGIN
213 ShowMessage('Not a standard 24bit bitmap');
214 Exit;
215 END;
216 IF NOT(bmpdata[10]=54) THEN BEGIN
217 ShowMessage('Imagedata has to start at 0x54');
218 Exit;
219 END;
220 IF NOT(bmpdata[14]=40) THEN BEGIN
221 ShowMessage('Second bitmap header has to have 40 bytes');
222 Exit;
223 END;
224 IF NOT(bmpdata[28]=24) THEN BEGIN
225 ShowMessage('Bitmap has to have 24bits');
226 Exit;
227 END;
228 IF NOT(bmpdata[30]=0) THEN BEGIN
229 ShowMessage('Bitmap has to be uncompressed');
230 Exit;
231 END;
232 Result.imgx:=bmpdata[18]+bmpdata[19]*256+bmpdata[20]*256*256+bmpdata[21]*256*256*256;
233 Result.imgy:=bmpdata[22]+bmpdata[23]*256+bmpdata[24]*256*256+bmpdata[25]*256*256*256;
234 Result.imgdepth:=16;
235 Result.storetype:=1;
236
237 SetLength(Result.imgdata,Result.imgx*Result.imgy*2);
238 FOR y:=0 TO Result.imgy-1 DO BEGIN
239 FOR x:=0 TO Result.imgx-1 DO BEGIN
240 r24:=bmpdata[54+(Result.imgx*y+x)*3+0];
241 g24:=bmpdata[54+(Result.imgx*y+x)*3+1];
242 b24:=bmpdata[54+(Result.imgx*y+x)*3+2];
243 r16:=(Ceil(r24*$001F/255)) AND $001F;
244 g16:=(Ceil(g24*$03E0/255)) AND $03E0;
245 b16:=(Ceil(b24*$7C00/255)) AND $7C00;
246 gesamt:=r16+g16+b16;
247 Result.imgdata[((Result.imgx*y+x)*2)+0]:=gesamt AND $00FF;
248 Result.imgdata[((Result.imgx*y+x)*2)+1]:=(gesamt AND $FF00) DIV 256;
249 END;
250 END;
251
252 Result.imgdata:=RevertImage(Result.imgx,Result.imgy,Result.imgdepth,Result.imgdata);
253 END;
254
255FUNCTION LoadTXMBconnected(fileid:LongWord):TImgPackage;
256 VAR
257 i,x,y,x2,y2,pixelid,imgid:LongWord;
258 rows,cols:Word;
259 linkcount:LongWord;
260 link:LongWord;
261 single_image:TImgPackage;
262 images_decoded:Array OF TImgPackage;
263 x_start,y_start:LongWord;
264 BEGIN
265 LoadDatFilePart(fileid,$10,SizeOf(Result.imgx),@Result.imgx);
266 LoadDatFilePart(fileid,$12,SizeOf(Result.imgy),@Result.imgy);
267 LoadDatFilePart(fileid,$18,SizeOf(cols),@cols);
268 LoadDatFilePart(fileid,$1A,SizeOf(rows),@rows);
269 LoadDatFilePart(fileid,$1C,SizeOf(linkcount),@linkcount);
270 SetLength(images_decoded,linkcount);
271 FOR i:=0 TO linkcount-1 DO BEGIN
272 LoadDatFilePart(fileid,$20+i*4,SizeOf(link),@link);
273 link:=link DIV 256;
274 single_image:=LoadImgData(link);
275 images_decoded[i]:=BmpToImgdata(ImgdataToBmp(single_image.imgx,single_image.imgy,single_image.imgdepth,single_image.storetype,single_image.imgdata));
276 END;
277 SetLength(Result.imgdata,Result.imgx*Result.imgy*2);
278 FOR y:=0 TO rows-1 DO BEGIN
279 FOR x:=0 TO cols-1 DO BEGIN
280 imgid:=y*cols+x;
281 x_start:=0;
282 y_start:=0;
283 FOR i:=0 TO x DO IF i<x THEN x_start:=x_start+images_decoded[i].imgx;
284 FOR i:=0 TO y DO IF i<y THEN y_start:=y_start+images_decoded[i].imgy;
285 FOR y2:=0 TO images_decoded[imgid].imgy-1 DO BEGIN
286 FOR x2:=0 TO images_decoded[imgid].imgx-1 DO BEGIN
287 IF ( (x_start+x2)<Result.imgx ) AND ( (y_start+y2)<Result.imgy ) THEN BEGIN
288 pixelid:=y_start*Result.imgx+x_start+y2*Result.imgx+x2;
289 Result.imgdata[pixelid*2+0]:=images_decoded[imgid].imgdata[(y2*images_decoded[imgid].imgx+x2)*2+0];
290 Result.imgdata[pixelid*2+1]:=images_decoded[imgid].imgdata[(y2*images_decoded[imgid].imgx+x2)*2+1];
291 END;
292 END;
293 END;
294 END;
295 END;
296 Result.imgdepth:=16;
297 Result.storetype:=1;
298 END;
299
300FUNCTION LoadImgData(fileid:LongWord):TImgPackage;
301 BEGIN
302 LoadDatFilePart(fileid,$9C,SizeOf(Result.raw_addr),@Result.raw_addr);
303 LoadDatFilePart(fileid,$8C,SizeOf(Result.imgx),@Result.imgx);
304 LoadDatFilePart(fileid,$8E,SizeOf(Result.imgy),@Result.imgy);
305 LoadDatFilePart(fileid,$90,SizeOf(Result.storetype),@Result.storetype);
306
307 CASE Result.storetype OF
308 0,1,2: BEGIN
309 Result.datasize:=Result.imgx*Result.imgy*2;
310 Result.imgdepth:=16;
311 END;
312 8: BEGIN
313 Result.datasize:=Result.imgx*Result.imgy*4;
314 Result.imgdepth:=32;
315 END;
316 9: BEGIN
317 Result.datasize:=Result.imgx*Result.imgy DIV 2;
318 Result.imgdepth:=16;
319 END;
320 ELSE
321 Exit;
322 END;
323 SetLength(Result.imgdata,Result.datasize);
324
325 LoadRawFilePart(Result.raw_addr,Result.datasize,@Result.imgdata[0]);
326 END;
327
328FUNCTION GetImageDataSize(imgx,imgy,imgdepth:Word; fading:Boolean):LongWord;
329 VAR
330 size:LongWord;
331 x,y:Word;
332 BEGIN
333 x:=imgx;
334 y:=imgy;
335 size:=x*y*imgdepth DIV 8;
336 IF fading THEN BEGIN
337 REPEAT
338 x:=x DIV 2;
339 y:=y DIV 2;
340 size:=size+x*y*imgdepth DIV 8;
341 UNTIL (x=1) OR (y=1);
342 END;
343 Result:=size;
344 END;
345
346FUNCTION CreateFadedImage(image:TImgPackage):Tdata;
347 VAR
348 i:LongWord;
349 x,y:Word;
350 imgdata:Tdata;
351 fadelvldata:Tdata;
352 BEGIN
353 x:=image.imgx;
354 y:=image.imgy;
355 SetLength(imgdata,x*y*2);
356 SetLength(fadelvldata,x*y*2);
357 FOR i:=0 TO Length(imgdata)-1 DO BEGIN
358 imgdata[i]:=image.imgdata[i];
359 fadelvldata[i]:=image.imgdata[i];
360 END;
361 REPEAT
362 fadelvldata:=ResizeImage(x,y,16,fadelvldata);
363 x:=x DIV 2;
364 y:=y DIV 2;
365 SetLength(imgdata,Length(imgdata)+x*y*2);
366 FOR i:=0 TO Length(fadelvldata)-1 DO imgdata[Length(imgdata)-x*y*2+i]:=fadelvldata[i];
367 UNTIL (x=1) OR (y=1);
368 SetLength(Result, Length(imgdata));
369 FOR i:=0 TO Length(imgdata)-1 DO Result[i]:=imgdata[i];
370 END;
371
372END.
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