Rev 6797 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
6733 | IgorA | 1 | |
2 | |||
3 | |||
4 | ; Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson |
||
5 | ; (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
||
6 | ; (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
||
7 | |||
8 | |||
9 | ; For conditions of distribution and use, see the disclaimer |
||
10 | ; and license in png.inc |
||
11 | |||
12 | |||
13 | |||
14 | |||
15 | |||
16 | ;void (png_structrp png_ptr) |
||
17 | align 4 |
||
18 | proc png_set_bgr uses edi, png_ptr:dword |
||
19 | png_debug 1, 'in png_set_bgr' |
||
20 | |||
21 | |||
22 | test edi,edi |
||
6891 | IgorA | 23 | jz @f ;if (..==0) return |
24 | or dword[edi+png_struct.transformations], PNG_BGR |
||
6733 | IgorA | 25 | @@: |
26 | ret |
||
27 | endp |
||
28 | |||
29 | |||
30 | ;void (png_structrp png_ptr) |
||
31 | align 4 |
||
32 | proc png_set_swap uses edi, png_ptr:dword |
||
33 | png_debug 1, 'in png_set_swap' |
||
34 | |||
35 | |||
36 | test edi,edi |
||
6891 | IgorA | 37 | jz @f ;if (..==0) return |
38 | |||
6733 | IgorA | 39 | |
40 | jne @f ;if (..==..) |
||
41 | or dword[edi+png_struct.transformations], PNG_SWAP_BYTES |
||
42 | @@: |
||
43 | ret |
||
44 | endp |
||
45 | |||
46 | |||
47 | ;void (png_structrp png_ptr) |
||
48 | align 4 |
||
49 | proc png_set_packing uses edi, png_ptr:dword |
||
50 | png_debug 1, 'in png_set_packing' |
||
51 | |||
52 | |||
53 | test edi,edi |
||
6891 | IgorA | 54 | jz @f ;if (..==0) return |
55 | |||
6733 | IgorA | 56 | |
57 | jge @f ;if (..<..) |
||
58 | or dword[edi+png_struct.transformations], PNG_PACK |
||
59 | if PNG_WRITE_SUPPORTED eq 1 |
||
60 | mov byte[edi+png_struct.usr_bit_depth],8 |
||
61 | end if |
||
62 | @@: |
||
63 | ret |
||
64 | endp |
||
65 | |||
66 | |||
67 | ;void (png_structrp png_ptr) |
||
68 | align 4 |
||
69 | proc png_set_packswap uses edi, png_ptr:dword |
||
70 | png_debug 1, 'in png_set_packswap' |
||
71 | |||
72 | |||
73 | test edi,edi |
||
6891 | IgorA | 74 | jz @f ;if (..==0) return |
75 | |||
6733 | IgorA | 76 | |
77 | jge @f ;if (..<..) |
||
78 | or dword[edi+png_struct.transformations], PNG_PACKSWAP |
||
79 | @@: |
||
80 | ret |
||
81 | endp |
||
82 | |||
83 | |||
6797 | IgorA | 84 | align 4 |
6733 | IgorA | 85 | proc png_set_shift uses ecx edi, png_ptr:dword, true_bits:dword |
86 | png_debug 1, 'in png_set_shift' |
||
87 | |||
88 | |||
89 | test edi,edi |
||
6891 | IgorA | 90 | jz @f ;if (..==0) return |
91 | |||
6733 | IgorA | 92 | |
93 | mov ecx,sizeof.png_color_8 |
||
94 | mov edi,[edi+png_struct.shift] |
||
95 | mov esi,[true_bits] |
||
96 | rep movsb |
||
97 | @@: |
||
98 | ret |
||
99 | endp |
||
100 | |||
101 | |||
102 | align 4 |
||
103 | proc png_set_interlace_handling uses edi, png_ptr:dword |
||
104 | png_debug 1, 'in png_set_interlace handling' |
||
105 | |||
106 | |||
107 | test edi,edi |
||
6891 | IgorA | 108 | jz @f |
109 | cmp byte[edi+png_struct.interlaced],0 |
||
6733 | IgorA | 110 | je @f ;if(..!=0 && ..!=0) |
111 | or dword[edi+png_struct.transformations], PNG_INTERLACE |
||
112 | mov eax,7 |
||
113 | jmp .end_f |
||
114 | @@: |
||
115 | |||
116 | |||
117 | inc eax |
||
118 | .end_f: |
||
119 | ret |
||
120 | endp |
||
121 | |||
122 | |||
123 | ; The filler type has changed in v0.95 to allow future 2-byte fillers |
||
124 | ; for 48-bit input data, as well as to avoid problems with some compilers |
||
125 | ; that don't like bytes as parameters. |
||
126 | |||
127 | |||
128 | align 4 |
||
129 | proc png_set_filler uses eax edi, png_ptr:dword, filler:dword, filler_loc:dword |
||
130 | png_debug 1, 'in png_set_filler' |
||
131 | |||
132 | |||
133 | test edi,edi |
||
6891 | IgorA | 134 | jz .end_f ;if (..==0) return |
135 | |||
6733 | IgorA | 136 | |
137 | ; operation and therefore to do more checking here for a valid call. |
||
138 | |||
139 | |||
140 | and eax,PNG_IS_READ_STRUCT |
||
141 | jz @f ;if (..!=0) |
||
6797 | IgorA | 142 | if PNG_READ_FILLER_SUPPORTED eq 1 |
6733 | IgorA | 143 | ; On read png_set_filler is always valid, regardless of the base PNG |
144 | ; format, because other transformations can give a format where the |
||
145 | ; filler code can execute (basically an 8 or 16-bit component RGB or G |
||
146 | ; format.) |
||
147 | |||
148 | |||
149 | ; confusion in the past.) The filler is only used in the read code. |
||
150 | |||
151 | |||
152 | mov [edi+png_struct.filler],ax |
||
153 | jmp .end0 |
||
154 | else |
||
155 | cStr ,'png_set_filler not supported on read' |
||
156 | stdcall png_app_error, edi, eax |
||
157 | jmp .end_f |
||
158 | end if |
||
159 | @@: ;else ;write |
||
160 | if PNG_WRITE_FILLER_SUPPORTED eq 1 |
||
161 | ; On write the usr_channels parameter must be set correctly at the |
||
162 | ; start to record the number of channels in the app-supplied data. |
||
163 | |||
164 | |||
165 | ; { |
||
166 | ; case PNG_COLOR_TYPE_RGB: |
||
167 | ; png_ptr->usr_channels = 4; |
||
168 | ; break; |
||
169 | |||
170 | |||
171 | ; if (png_ptr->bit_depth >= 8) |
||
172 | ; { |
||
173 | ; png_ptr->usr_channels = 2; |
||
174 | ; break; |
||
175 | ; } |
||
176 | |||
177 | |||
178 | ; { |
||
179 | ; There simply isn't any code in libpng to strip out bits |
||
180 | ; from bytes when the components are less than a byte in |
||
181 | ; size! |
||
182 | |||
183 | |||
184 | ; "png_set_filler is invalid for" |
||
185 | ; " low bit depth gray output"); |
||
186 | ; return; |
||
187 | ; } |
||
188 | |||
189 | |||
190 | ; png_app_error(png_ptr, |
||
191 | ; "png_set_filler: inappropriate color type"); |
||
192 | ; return; |
||
193 | ; } |
||
194 | else |
||
195 | cStr ,'png_set_filler not supported on write' |
||
196 | stdcall png_app_error, edi, eax |
||
197 | jmp .end_f |
||
198 | end if |
||
199 | .end0: |
||
200 | |||
201 | |||
202 | ; and the flag to say where the filler channel is. |
||
203 | |||
204 | |||
205 | |||
206 | |||
207 | jne @f ;if (..==..) |
||
208 | or dword[edi+png_struct.flags],PNG_FLAG_FILLER_AFTER |
||
209 | jmp .end_f |
||
210 | @@: ;else |
||
211 | and dword[edi+png_struct.flags],not PNG_FLAG_FILLER_AFTER |
||
212 | .end_f: |
||
213 | ret |
||
214 | endp |
||
215 | |||
216 | |||
217 | ;void (png_structrp png_ptr, uint_32 filler, int filler_loc) |
||
218 | align 4 |
||
219 | proc png_set_add_alpha uses eax edi, png_ptr:dword, filler:dword, filler_loc:dword |
||
220 | png_debug 1, 'in png_set_add_alpha' |
||
221 | |||
222 | |||
223 | test edi,edi |
||
6891 | IgorA | 224 | jz .end_f ;if (..==0) return |
225 | |||
6733 | IgorA | 226 | |
227 | ; The above may fail to do anything. |
||
228 | mov eax,[edi+png_struct.transformations] |
||
229 | and eax,PNG_FILLER |
||
230 | jz .end_f ;if (..!=0) |
||
6797 | IgorA | 231 | or dword[edi+png_struct.transformations],PNG_ADD_ALPHA |
6733 | IgorA | 232 | .end_f: |
233 | ret |
||
234 | endp |
||
235 | |||
236 | |||
237 | align 4 |
||
238 | proc png_set_swap_alpha uses edi, png_ptr:dword |
||
239 | png_debug 1, 'in png_set_swap_alpha' |
||
240 | |||
241 | |||
242 | test edi,edi |
||
6891 | IgorA | 243 | jz .end_f ;if (..==0) return |
244 | or dword[edi+png_struct.transformations], PNG_SWAP_ALPHA |
||
6797 | IgorA | 245 | .end_f: |
6733 | IgorA | 246 | ret |
247 | endp |
||
248 | |||
249 | |||
250 | |||
251 | align 4 |
||
252 | proc png_set_invert_alpha uses edi, png_ptr:dword |
||
253 | png_debug 1, 'in png_set_invert_alpha' |
||
254 | |||
255 | |||
256 | test edi,edi |
||
6891 | IgorA | 257 | jz .end_f ;if (..==0) return |
258 | or dword[edi+png_struct.transformations], PNG_INVERT_ALPHA |
||
6797 | IgorA | 259 | .end_f: |
6733 | IgorA | 260 | ret |
261 | endp |
||
262 | |||
263 | |||
264 | align 4 |
||
265 | proc png_set_invert_mono uses edi, png_ptr:dword |
||
266 | png_debug 1, 'in png_set_invert_mono' |
||
267 | |||
268 | |||
269 | test edi,edi |
||
6891 | IgorA | 270 | jz .end_f ;if (..==0) return |
271 | or dword[edi+png_struct.transformations], PNG_INVERT_MONO |
||
6797 | IgorA | 272 | .end_f: |
6733 | IgorA | 273 | ret |
274 | endp |
||
275 | |||
276 | |||
277 | ;void (png_row_infop row_info, bytep row) |
||
278 | align 4 |
||
279 | proc png_do_invert uses eax ebx ecx edx, row_info:dword, row:dword |
||
6891 | IgorA | 280 | ;ecx - i |
281 | ;eax - rp |
||
282 | ;edx - istop |
||
283 | png_debug 1, 'in png_do_invert' |
||
6733 | IgorA | 284 | |
285 | |||
6891 | IgorA | 286 | cmp byte[ebx+png_row_info.color_type],PNG_COLOR_TYPE_GRAY |
287 | jne .end0 |
||
288 | mov eax,[row] |
||
289 | mov edx,[ebx+png_row_info.rowbytes] |
||
290 | xor ecx,ecx |
||
291 | jmp @f |
||
292 | align 4 |
||
293 | .cycle0: |
||
294 | inc ecx |
||
295 | @@: |
||
296 | cmp ecx,edx |
||
297 | jae .end_f |
||
298 | not byte[eax] |
||
299 | inc eax |
||
300 | jmp .cycle0 |
||
301 | .end0: |
||
302 | cmp byte[ebx+png_row_info.color_type],PNG_COLOR_TYPE_GRAY_ALPHA |
||
303 | jne .end1 |
||
304 | cmp byte[ebx+png_row_info.bit_depth],8 |
||
305 | jne .end1 |
||
306 | mov eax,[row] |
||
307 | mov edx,[ebx+png_row_info.rowbytes] |
||
308 | xor ecx,ecx |
||
309 | jmp @f |
||
310 | align 4 |
||
311 | .cycle1: |
||
312 | add ecx,2 |
||
313 | @@: |
||
314 | cmp ecx,edx |
||
315 | jae .end_f |
||
316 | not byte[eax] |
||
317 | add eax,2 |
||
318 | jmp .cycle1 |
||
319 | .end1: |
||
320 | if PNG_16BIT_SUPPORTED eq 1 |
||
6733 | IgorA | 321 | cmp byte[ebx+png_row_info.color_type],PNG_COLOR_TYPE_GRAY_ALPHA |
6891 | IgorA | 322 | jne .end_f |
323 | cmp byte[ebx+png_row_info.bit_depth],16 |
||
324 | jne .end_f |
||
325 | mov eax,[row] |
||
326 | mov edx,[ebx+png_row_info.rowbytes] |
||
327 | xor ecx,ecx |
||
328 | jmp @f |
||
329 | align 4 |
||
330 | .cycle2: |
||
331 | add ecx,4 |
||
332 | @@: |
||
333 | cmp ecx,edx |
||
334 | jae .end_f |
||
335 | not word[eax] |
||
336 | add eax,4 |
||
337 | jmp .cycle2 |
||
338 | end if |
||
6733 | IgorA | 339 | .end_f: |
6891 | IgorA | 340 | ret |
6733 | IgorA | 341 | endp |
342 | |||
343 | |||
344 | ;void (png_row_infop row_info, bytep row) |
||
345 | align 4 |
||
346 | proc png_do_swap, row_info:dword, row:dword |
||
347 | png_debug 1, 'in png_do_swap' |
||
348 | |||
349 | |||
350 | ; { |
||
351 | ; bytep rp = row; |
||
352 | ; uint_32 i; |
||
353 | ; uint_32 istop= row_info->width * row_info->channels; |
||
354 | |||
355 | |||
356 | ; { |
||
357 | if PNG_BUILTIN_BSWAP16_SUPPORTED eq 1 |
||
358 | ; Feature added to libpng-1.6.11 for testing purposes, not |
||
359 | ; enabled by default. |
||
360 | |||
361 | |||
362 | else |
||
363 | ; byte t = *rp; |
||
364 | ; *rp = *(rp + 1); |
||
365 | ; *(rp + 1) = t; |
||
366 | end if |
||
367 | ; } |
||
368 | ; } |
||
369 | ret |
||
370 | endp |
||
371 | |||
372 | |||
373 | align 4 |
||
374 | onebppswaptable db 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,\ |
||
375 | 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,\ |
||
376 | 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,\ |
||
377 | 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,\ |
||
378 | 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,\ |
||
379 | 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,\ |
||
380 | 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,\ |
||
381 | 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,\ |
||
382 | 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,\ |
||
383 | 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,\ |
||
384 | 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,\ |
||
385 | 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,\ |
||
386 | 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,\ |
||
387 | 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,\ |
||
388 | 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,\ |
||
389 | 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,\ |
||
390 | 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,\ |
||
391 | 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,\ |
||
392 | 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,\ |
||
393 | 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,\ |
||
394 | 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,\ |
||
395 | 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,\ |
||
396 | 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,\ |
||
397 | 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,\ |
||
398 | 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,\ |
||
399 | 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,\ |
||
400 | 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,\ |
||
401 | 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,\ |
||
402 | 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,\ |
||
403 | 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,\ |
||
404 | 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,\ |
||
405 | 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF |
||
406 | |||
407 | |||
408 | twobppswaptable db 0x00, 0x40, 0x80, 0xC0, 0x10, 0x50, 0x90, 0xD0,\ |
||
409 | 0x20, 0x60, 0xA0, 0xE0, 0x30, 0x70, 0xB0, 0xF0,\ |
||
410 | 0x04, 0x44, 0x84, 0xC4, 0x14, 0x54, 0x94, 0xD4,\ |
||
411 | 0x24, 0x64, 0xA4, 0xE4, 0x34, 0x74, 0xB4, 0xF4,\ |
||
412 | 0x08, 0x48, 0x88, 0xC8, 0x18, 0x58, 0x98, 0xD8,\ |
||
413 | 0x28, 0x68, 0xA8, 0xE8, 0x38, 0x78, 0xB8, 0xF8,\ |
||
414 | 0x0C, 0x4C, 0x8C, 0xCC, 0x1C, 0x5C, 0x9C, 0xDC,\ |
||
415 | 0x2C, 0x6C, 0xAC, 0xEC, 0x3C, 0x7C, 0xBC, 0xFC,\ |
||
416 | 0x01, 0x41, 0x81, 0xC1, 0x11, 0x51, 0x91, 0xD1,\ |
||
417 | 0x21, 0x61, 0xA1, 0xE1, 0x31, 0x71, 0xB1, 0xF1,\ |
||
418 | 0x05, 0x45, 0x85, 0xC5, 0x15, 0x55, 0x95, 0xD5,\ |
||
419 | 0x25, 0x65, 0xA5, 0xE5, 0x35, 0x75, 0xB5, 0xF5,\ |
||
420 | 0x09, 0x49, 0x89, 0xC9, 0x19, 0x59, 0x99, 0xD9,\ |
||
421 | 0x29, 0x69, 0xA9, 0xE9, 0x39, 0x79, 0xB9, 0xF9,\ |
||
422 | 0x0D, 0x4D, 0x8D, 0xCD, 0x1D, 0x5D, 0x9D, 0xDD,\ |
||
423 | 0x2D, 0x6D, 0xAD, 0xED, 0x3D, 0x7D, 0xBD, 0xFD,\ |
||
424 | 0x02, 0x42, 0x82, 0xC2, 0x12, 0x52, 0x92, 0xD2,\ |
||
425 | 0x22, 0x62, 0xA2, 0xE2, 0x32, 0x72, 0xB2, 0xF2,\ |
||
426 | 0x06, 0x46, 0x86, 0xC6, 0x16, 0x56, 0x96, 0xD6,\ |
||
427 | 0x26, 0x66, 0xA6, 0xE6, 0x36, 0x76, 0xB6, 0xF6,\ |
||
428 | 0x0A, 0x4A, 0x8A, 0xCA, 0x1A, 0x5A, 0x9A, 0xDA,\ |
||
429 | 0x2A, 0x6A, 0xAA, 0xEA, 0x3A, 0x7A, 0xBA, 0xFA,\ |
||
430 | 0x0E, 0x4E, 0x8E, 0xCE, 0x1E, 0x5E, 0x9E, 0xDE,\ |
||
431 | 0x2E, 0x6E, 0xAE, 0xEE, 0x3E, 0x7E, 0xBE, 0xFE,\ |
||
432 | 0x03, 0x43, 0x83, 0xC3, 0x13, 0x53, 0x93, 0xD3,\ |
||
433 | 0x23, 0x63, 0xA3, 0xE3, 0x33, 0x73, 0xB3, 0xF3,\ |
||
434 | 0x07, 0x47, 0x87, 0xC7, 0x17, 0x57, 0x97, 0xD7,\ |
||
435 | 0x27, 0x67, 0xA7, 0xE7, 0x37, 0x77, 0xB7, 0xF7,\ |
||
436 | 0x0B, 0x4B, 0x8B, 0xCB, 0x1B, 0x5B, 0x9B, 0xDB,\ |
||
437 | 0x2B, 0x6B, 0xAB, 0xEB, 0x3B, 0x7B, 0xBB, 0xFB,\ |
||
438 | 0x0F, 0x4F, 0x8F, 0xCF, 0x1F, 0x5F, 0x9F, 0xDF,\ |
||
439 | 0x2F, 0x6F, 0xAF, 0xEF, 0x3F, 0x7F, 0xBF, 0xFF |
||
440 | |||
441 | |||
442 | fourbppswaptable db 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,\ |
||
443 | 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0,\ |
||
444 | 0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71,\ |
||
445 | 0x81, 0x91, 0xA1, 0xB1, 0xC1, 0xD1, 0xE1, 0xF1,\ |
||
446 | 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72,\ |
||
447 | 0x82, 0x92, 0xA2, 0xB2, 0xC2, 0xD2, 0xE2, 0xF2,\ |
||
448 | 0x03, 0x13, 0x23, 0x33, 0x43, 0x53, 0x63, 0x73,\ |
||
449 | 0x83, 0x93, 0xA3, 0xB3, 0xC3, 0xD3, 0xE3, 0xF3,\ |
||
450 | 0x04, 0x14, 0x24, 0x34, 0x44, 0x54, 0x64, 0x74,\ |
||
451 | 0x84, 0x94, 0xA4, 0xB4, 0xC4, 0xD4, 0xE4, 0xF4,\ |
||
452 | 0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75,\ |
||
453 | 0x85, 0x95, 0xA5, 0xB5, 0xC5, 0xD5, 0xE5, 0xF5,\ |
||
454 | 0x06, 0x16, 0x26, 0x36, 0x46, 0x56, 0x66, 0x76,\ |
||
455 | 0x86, 0x96, 0xA6, 0xB6, 0xC6, 0xD6, 0xE6, 0xF6,\ |
||
456 | 0x07, 0x17, 0x27, 0x37, 0x47, 0x57, 0x67, 0x77,\ |
||
457 | 0x87, 0x97, 0xA7, 0xB7, 0xC7, 0xD7, 0xE7, 0xF7,\ |
||
458 | 0x08, 0x18, 0x28, 0x38, 0x48, 0x58, 0x68, 0x78,\ |
||
459 | 0x88, 0x98, 0xA8, 0xB8, 0xC8, 0xD8, 0xE8, 0xF8,\ |
||
460 | 0x09, 0x19, 0x29, 0x39, 0x49, 0x59, 0x69, 0x79,\ |
||
461 | 0x89, 0x99, 0xA9, 0xB9, 0xC9, 0xD9, 0xE9, 0xF9,\ |
||
462 | 0x0A, 0x1A, 0x2A, 0x3A, 0x4A, 0x5A, 0x6A, 0x7A,\ |
||
463 | 0x8A, 0x9A, 0xAA, 0xBA, 0xCA, 0xDA, 0xEA, 0xFA,\ |
||
464 | 0x0B, 0x1B, 0x2B, 0x3B, 0x4B, 0x5B, 0x6B, 0x7B,\ |
||
465 | 0x8B, 0x9B, 0xAB, 0xBB, 0xCB, 0xDB, 0xEB, 0xFB,\ |
||
466 | 0x0C, 0x1C, 0x2C, 0x3C, 0x4C, 0x5C, 0x6C, 0x7C,\ |
||
467 | 0x8C, 0x9C, 0xAC, 0xBC, 0xCC, 0xDC, 0xEC, 0xFC,\ |
||
468 | 0x0D, 0x1D, 0x2D, 0x3D, 0x4D, 0x5D, 0x6D, 0x7D,\ |
||
469 | 0x8D, 0x9D, 0xAD, 0xBD, 0xCD, 0xDD, 0xED, 0xFD,\ |
||
470 | 0x0E, 0x1E, 0x2E, 0x3E, 0x4E, 0x5E, 0x6E, 0x7E,\ |
||
471 | 0x8E, 0x9E, 0xAE, 0xBE, 0xCE, 0xDE, 0xEE, 0xFE,\ |
||
472 | 0x0F, 0x1F, 0x2F, 0x3F, 0x4F, 0x5F, 0x6F, 0x7F,\ |
||
473 | 0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF |
||
474 | end if ;PACKSWAP || WRITE_PACKSWAP |
||
475 | |||
476 | |||
477 | ;void (png_row_infop row_info, bytep row) |
||
478 | align 4 |
||
479 | proc png_do_packswap uses eax edx edi esi, row_info:dword, row:dword |
||
480 | png_debug 1, 'in png_do_packswap' |
||
481 | |||
482 | |||
483 | cmp byte[eax+png_row_info.bit_depth],8 |
||
484 | jge .end_f ;if (..<..) |
||
485 | ;edi = rp |
||
486 | ;esi = table |
||
487 | |||
488 | |||
489 | mov edi,[row] |
||
490 | add edx,edi |
||
491 | |||
492 | |||
493 | jne @f ;if (..==..) |
||
494 | mov esi,onebppswaptable |
||
495 | jmp .cycle0 |
||
496 | @@: |
||
497 | cmp byte[eax+png_row_info.bit_depth],2 |
||
498 | jne @f ;else if (..==..) |
||
499 | mov esi,twobppswaptable |
||
500 | jmp .cycle0 |
||
501 | @@: |
||
502 | cmp byte[eax+png_row_info.bit_depth],4 |
||
503 | jne .end_f ;else if (..==..) |
||
504 | mov esi,fourbppswaptable |
||
505 | align 4 |
||
506 | .cycle0: ;for (..=..;..<..;..) |
||
507 | cmp edi,edx |
||
508 | jge .end_f |
||
509 | movzx eax,byte[edi] |
||
510 | mov al,byte[esi+eax] |
||
511 | stosb ;*rp = table[*rp] |
||
512 | jmp .cycle0 |
||
513 | .end_f: |
||
514 | ret |
||
515 | endp |
||
516 | |||
517 | |||
518 | ; somewhat weird combination of flags to determine what to do. All the calls |
||
519 | ; to png_do_strip_filler are changed in 1.5.2 to call this instead with the |
||
520 | ; correct arguments. |
||
521 | |||
522 | |||
523 | ; end (not in the middle) of each pixel. |
||
524 | |||
525 | |||
526 | align 4 |
||
527 | proc png_do_strip_channel, row_info:dword, row:dword, at_start:dword |
||
528 | ; bytep sp = row; /* source pointer */ |
||
529 | ; bytep dp = row; /* destination pointer */ |
||
530 | ; bytep ep = row + row_info->rowbytes; /* One beyond end of row */ |
||
531 | |||
532 | |||
533 | ; it is copied to. ep always points just beyond the end of the row, so |
||
534 | ; the loop simply copies (channels-1) channels until sp reaches ep. |
||
535 | |||
536 | |||
537 | ; nonzero -- convert GA, GX, RGBA, RGBX, GGAA, RRGGBBXX, etc. |
||
538 | |||
539 | |||
540 | |||
541 | ; if (row_info->channels == 2) |
||
542 | ; { |
||
543 | ; if (row_info->bit_depth == 8) |
||
544 | ; { |
||
545 | ; if (at_start != 0) /* Skip initial filler */ |
||
546 | ; ++sp; |
||
547 | ; else /* Skip initial channel and, for sp, the filler */ |
||
548 | ; sp += 2, ++dp; |
||
549 | |||
550 | |||
551 | ; while (sp < ep) |
||
552 | ; *dp++ = *sp, sp += 2; |
||
553 | |||
554 | |||
555 | ; } |
||
556 | |||
557 | |||
558 | ; { |
||
559 | ; if (at_start != 0) /* Skip initial filler */ |
||
560 | ; sp += 2; |
||
561 | ; else /* Skip initial channel and, for sp, the filler */ |
||
562 | ; sp += 4, dp += 2; |
||
563 | |||
564 | |||
565 | ; *dp++ = *sp++, *dp++ = *sp, sp += 3; |
||
566 | |||
567 | |||
568 | ; } |
||
569 | |||
570 | |||
571 | ; return; /* bad bit depth */ |
||
572 | |||
573 | |||
574 | |||
575 | |||
576 | ; if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) |
||
577 | ; row_info->color_type = PNG_COLOR_TYPE_GRAY; |
||
578 | ; } |
||
579 | |||
580 | |||
581 | ; else if (row_info->channels == 4) |
||
582 | ; { |
||
583 | ; if (row_info->bit_depth == 8) |
||
584 | ; { |
||
585 | ; if (at_start != 0) /* Skip initial filler */ |
||
586 | ; ++sp; |
||
587 | ; else /* Skip initial channels and, for sp, the filler */ |
||
588 | ; sp += 4, dp += 3; |
||
589 | |||
590 | |||
591 | ; while (sp < ep) |
||
592 | ; *dp++ = *sp++, *dp++ = *sp++, *dp++ = *sp, sp += 2; |
||
593 | |||
594 | |||
595 | ; } |
||
596 | |||
597 | |||
598 | ; { |
||
599 | ; if (at_start != 0) /* Skip initial filler */ |
||
600 | ; sp += 2; |
||
601 | ; else /* Skip initial channels and, for sp, the filler */ |
||
602 | ; sp += 8, dp += 6; |
||
603 | |||
604 | |||
605 | ; { |
||
606 | ; /* Copy 6 bytes, skip 2 */ |
||
607 | ; *dp++ = *sp++, *dp++ = *sp++; |
||
608 | ; *dp++ = *sp++, *dp++ = *sp++; |
||
609 | ; *dp++ = *sp++, *dp++ = *sp, sp += 3; |
||
610 | ; } |
||
611 | |||
612 | |||
613 | ; } |
||
614 | |||
615 | |||
616 | ; return; /* bad bit depth */ |
||
617 | |||
618 | |||
619 | |||
620 | |||
621 | ; if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA) |
||
622 | ; row_info->color_type = PNG_COLOR_TYPE_RGB; |
||
623 | ; } |
||
624 | |||
625 | |||
626 | ; return; /* The filler channel has gone already */ |
||
627 | |||
628 | |||
629 | ; row_info->rowbytes = dp-row; |
||
630 | ret |
||
631 | endp |
||
632 | |||
633 | |||
634 | ;void (png_row_infop row_info, bytep row) |
||
635 | align 4 |
||
636 | proc png_do_bgr, row_info:dword, row:dword |
||
637 | png_debug 1, 'in png_do_bgr' |
||
638 | ;ebx - rp |
||
6891 | IgorA | 639 | ;ecx - i |
640 | ;esi - row_width |
||
641 | pushad |
||
642 | mov edi,[row_info] |
||
643 | movzx eax,byte[edi+png_row_info.color_type] |
||
644 | and eax,PNG_COLOR_MASK_COLOR |
||
645 | je .end_f |
||
646 | mov esi,[edi+png_row_info.width] |
||
647 | cmp byte[edi+png_row_info.bit_depth],8 |
||
648 | jne .end0 |
||
649 | cmp byte[edi+png_row_info.color_type],PNG_COLOR_TYPE_RGB |
||
650 | jne .end1 |
||
651 | xor ecx,ecx |
||
652 | mov ebx,[row] |
||
653 | jmp @f |
||
654 | align 4 |
||
655 | .cycle0: |
||
656 | inc ecx |
||
657 | add ebx,3 |
||
658 | @@: |
||
659 | cmp ecx,esi |
||
660 | jae .end_f |
||
661 | mov dl,[ebx] |
||
662 | mov al,[ebx+2] |
||
663 | mov [ebx],al |
||
664 | mov [ebx+2],dl |
||
665 | jmp .cycle0 |
||
666 | .end1: |
||
667 | cmp byte[edi+png_row_info.color_type],PNG_COLOR_TYPE_RGB_ALPHA |
||
668 | jne .end_f |
||
669 | xor ecx,ecx |
||
670 | mov ebx,[row] |
||
671 | jmp @f |
||
672 | align 4 |
||
673 | .cycle1: |
||
674 | inc ecx |
||
675 | add ebx,4 |
||
676 | @@: |
||
677 | cmp ecx,esi |
||
678 | jae .end_f |
||
679 | mov dl,[ebx] |
||
680 | mov al,[ebx+2] |
||
681 | mov [ebx],al |
||
682 | mov [ebx+2],dl |
||
683 | jmp .cycle1 |
||
684 | .end0: |
||
685 | if PNG_16BIT_SUPPORTED eq 1 |
||
6733 | IgorA | 686 | cmp byte[edi+png_row_info.bit_depth],16 |
6891 | IgorA | 687 | jne .end_f |
688 | cmp byte[edi+png_row_info.color_type],PNG_COLOR_TYPE_RGB |
||
689 | jne .end2 |
||
690 | xor ecx,ecx |
||
691 | mov ebx,[row] |
||
692 | jmp @f |
||
693 | align 4 |
||
694 | .cycle2: |
||
695 | inc ecx |
||
696 | add ebx,6 |
||
697 | @@: |
||
698 | cmp ecx,esi |
||
699 | jae .end_f |
||
700 | mov dx,[ebx] |
||
701 | mov ax,[ebx+4] |
||
702 | mov [ebx],ax |
||
703 | mov [ebx+4],dx |
||
704 | jmp .cycle2 |
||
705 | .end2: |
||
706 | cmp byte[edi+png_row_info.color_type],PNG_COLOR_TYPE_RGB_ALPHA |
||
707 | jne .end_f |
||
708 | xor ecx,ecx |
||
709 | mov ebx,[row] |
||
710 | jmp @f |
||
711 | align 4 |
||
712 | .cycle3: |
||
713 | inc ecx |
||
714 | add ebx,8 |
||
715 | @@: |
||
716 | cmp ecx,esi |
||
717 | jae .end_f |
||
718 | mov dx,[ebx] |
||
719 | mov ax,[ebx+4] |
||
720 | mov [ebx],ax |
||
721 | mov [ebx+4],dx |
||
722 | jmp .cycle3 |
||
723 | end if |
||
6733 | IgorA | 724 | .end_f: |
6891 | IgorA | 725 | popad |
726 | ret |
||
6733 | IgorA | 727 | endp |
728 | |||
729 | |||
730 | ;void (png_structrp png_ptr, png_row_infop row_info) |
||
731 | align 4 |
||
732 | proc png_do_check_palette_indexes, png_ptr:dword, row_info:dword |
||
733 | ; if (png_ptr->num_palette < (1 << row_info->bit_depth) && |
||
734 | ; png_ptr->num_palette > 0) /* num_palette can be 0 in MNG files */ |
||
735 | ; { |
||
736 | ; Calculations moved outside switch in an attempt to stop different |
||
737 | ; compiler warnings. 'padding' is in *bits* within the last byte, it is |
||
738 | ; an 'int' because pixel_depth becomes an 'int' in the expression below, |
||
739 | ; and this calculation is used because it avoids warnings that other |
||
740 | ; forms produced on either GCC or MSVC. |
||
741 | |||
742 | |||
743 | ; bytep rp = png_ptr->row_buf + row_info->rowbytes; |
||
744 | |||
745 | |||
746 | ; { |
||
747 | ; case 1: |
||
748 | ; { |
||
749 | ; /* in this case, all bytes must be 0 so we don't need |
||
750 | ; to unpack the pixels except for the rightmost one. |
||
751 | |||
752 | |||
753 | ; { |
||
754 | ; if ((*rp >> padding) != 0) |
||
755 | ; png_ptr->num_palette_max = 1; |
||
756 | ; padding = 0; |
||
757 | ; } |
||
758 | |||
759 | |||
760 | ; } |
||
761 | |||
762 | |||
763 | ; { |
||
764 | ; for (; rp > png_ptr->row_buf; rp--) |
||
765 | ; { |
||
766 | ; int i = ((*rp >> padding) & 0x03); |
||
767 | |||
768 | |||
769 | ; png_ptr->num_palette_max = i; |
||
770 | |||
771 | |||
772 | |||
773 | |||
774 | ; png_ptr->num_palette_max = i; |
||
775 | |||
776 | |||
777 | |||
778 | |||
779 | ; png_ptr->num_palette_max = i; |
||
780 | |||
781 | |||
782 | |||
783 | |||
784 | ; png_ptr->num_palette_max = i; |
||
785 | |||
786 | |||
787 | ; } |
||
788 | |||
789 | |||
790 | ; } |
||
791 | |||
792 | |||
793 | ; { |
||
794 | ; for (; rp > png_ptr->row_buf; rp--) |
||
795 | ; { |
||
796 | ; int i = ((*rp >> padding) & 0x0f); |
||
797 | |||
798 | |||
799 | ; png_ptr->num_palette_max = i; |
||
800 | |||
801 | |||
802 | |||
803 | |||
804 | ; png_ptr->num_palette_max = i; |
||
805 | |||
806 | |||
807 | ; } |
||
808 | |||
809 | |||
810 | ; } |
||
811 | |||
812 | |||
813 | ; { |
||
814 | ; for (; rp > png_ptr->row_buf; rp--) |
||
815 | ; { |
||
816 | ; if (*rp > png_ptr->num_palette_max) |
||
817 | ; png_ptr->num_palette_max = (int) *rp; |
||
818 | ; } |
||
819 | |||
820 | |||
821 | ; } |
||
822 | |||
823 | |||
824 | ; break; |
||
825 | ; } |
||
826 | ; } |
||
827 | ret |
||
828 | endp |
||
829 | |||
830 | |||
831 | align 4 |
||
832 | proc png_set_user_transform_info uses eax edi, png_ptr:dword, user_transform_ptr:dword, user_transform_depth:dword, user_transform_channels:dword |
||
833 | png_debug 1, 'in png_set_user_transform_info' |
||
834 | |||
835 | |||
836 | test edi,edi |
||
6891 | IgorA | 837 | jz .end_f |
838 | |||
6733 | IgorA | 839 | |
840 | mov eax,[edi+png_struct.mode] |
||
841 | and eax,PNG_IS_READ_STRUCT |
||
842 | jz @f |
||
6797 | IgorA | 843 | mov eax,[edi+png_struct.flags] |
6733 | IgorA | 844 | and eax,PNG_FLAG_ROW_INIT |
845 | jz @f ;if (..!=0 && ..!=0) |
||
6797 | IgorA | 846 | cStr ,'info change after png_start_read_image or png_read_update_info' |
6733 | IgorA | 847 | stdcall png_app_error, edi, eax |
6779 | IgorA | 848 | jmp .end_f |
6733 | IgorA | 849 | @@: |
850 | end if |
||
851 | |||
852 | |||
853 | mov [edi+png_struct.user_transform_ptr],eax |
||
854 | mov eax,[user_transform_depth] |
||
855 | mov [edi+png_struct.user_transform_depth],al |
||
856 | mov eax,[user_transform_channels] |
||
857 | mov [edi+png_struct.user_transform_channels],al |
||
858 | .end_f: |
||
859 | ret |
||
860 | endp |
||
861 | |||
862 | |||
863 | ; the user transform functions. The application should free any memory |
||
864 | ; associated with this pointer before png_write_destroy and png_read_destroy |
||
865 | ; are called. |
||
866 | |||
867 | |||
6797 | IgorA | 868 | align 4 |
6733 | IgorA | 869 | proc png_get_user_transform_ptr, png_ptr:dword |
870 | mov eax,[png_ptr] |
||
871 | cmp eax,0 |
||
872 | je @f |
||
873 | mov eax,[eax+png_struct.user_transform_ptr] |
||
874 | @@: |
||
875 | ret |
||
876 | endp |
||
877 | |||
878 | |||
6797 | IgorA | 879 | align 4 |
6733 | IgorA | 880 | proc png_get_current_row_number, png_ptr:dword |
881 | ; See the comments in png.inc - this is the sub-image row when reading an |
||
882 | ; interlaced image. |
||
883 | |||
884 | |||
885 | cmp eax,0 |
||
886 | je @f ;if (..!=0) |
||
887 | mov eax,[eax+png_struct.row_number] |
||
888 | jmp .end_f |
||
889 | @@: |
||
890 | mov eax,PNG_UINT_32_MAX ;help the app not to fail silently |
||
891 | .end_f: |
||
892 | ret |
||
893 | endp |
||
894 | |||
895 | |||
6797 | IgorA | 896 | align 4 |
6733 | IgorA | 897 | proc png_get_current_pass_number, png_ptr:dword |
898 | mov eax,[png_ptr] |
||
899 | cmp eax,0 |
||
900 | je @f ;if (..!=0) |
||
901 | mov eax,[eax+png_struct.pass] |
||
902 | jmp .end_f |
||
903 | @@: |
||
904 | mov eax,8 ;invalid |
||
905 | .end_f: |
||
906 | ret |
||
907 | endp |
||
908 | end if><>>>>>> |
||
909 | > |