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Revision 31 - (show annotations) (download)
Tue Sep 7 03:24:11 2010 UTC (10 years, 1 month ago) by william
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committing r3113 initial commit again...
1
2 /* pngtest.c - a simple test program to test libpng
3 *
4 * Last changed in libpng 1.2.37 [June 4, 2009]
5 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
8 *
9 * This code is released under the libpng license.
10 * For conditions of distribution and use, see the disclaimer
11 * and license in png.h
12 *
13 * This program reads in a PNG image, writes it out again, and then
14 * compares the two files. If the files are identical, this shows that
15 * the basic chunk handling, filtering, and (de)compression code is working
16 * properly. It does not currently test all of the transforms, although
17 * it probably should.
18 *
19 * The program will report "FAIL" in certain legitimate cases:
20 * 1) when the compression level or filter selection method is changed.
21 * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
22 * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
23 * exist in the input file.
24 * 4) others not listed here...
25 * In these cases, it is best to check with another tool such as "pngcheck"
26 * to see what the differences between the two files are.
27 *
28 * If a filename is given on the command-line, then this file is used
29 * for the input, rather than the default "pngtest.png". This allows
30 * testing a wide variety of files easily. You can also test a number
31 * of files at once by typing "pngtest -m file1.png file2.png ..."
32 */
33
34 #include "png.h"
35
36 #if defined(_WIN32_WCE)
37 # if _WIN32_WCE < 211
38 __error__ (f|w)printf functions are not supported on old WindowsCE.;
39 # endif
40 # include <windows.h>
41 # include <stdlib.h>
42 # define READFILE(file, data, length, check) \
43 if (ReadFile(file, data, length, &check, NULL)) check = 0
44 # define WRITEFILE(file, data, length, check)) \
45 if (WriteFile(file, data, length, &check, NULL)) check = 0
46 # define FCLOSE(file) CloseHandle(file)
47 #else
48 # include <stdio.h>
49 # include <stdlib.h>
50 # define READFILE(file, data, length, check) \
51 check=(png_size_t)fread(data, (png_size_t)1, length, file)
52 # define WRITEFILE(file, data, length, check) \
53 check=(png_size_t)fwrite(data, (png_size_t)1, length, file)
54 # define FCLOSE(file) fclose(file)
55 #endif
56
57 #if defined(PNG_NO_STDIO)
58 # if defined(_WIN32_WCE)
59 typedef HANDLE png_FILE_p;
60 # else
61 typedef FILE * png_FILE_p;
62 # endif
63 #endif
64
65 /* Makes pngtest verbose so we can find problems (needs to be before png.h) */
66 #ifndef PNG_DEBUG
67 # define PNG_DEBUG 0
68 #endif
69
70 #if !PNG_DEBUG
71 # define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
72 #endif
73
74 /* Turn on CPU timing
75 #define PNGTEST_TIMING
76 */
77
78 #ifdef PNG_NO_FLOATING_POINT_SUPPORTED
79 #undef PNGTEST_TIMING
80 #endif
81
82 #ifdef PNGTEST_TIMING
83 static float t_start, t_stop, t_decode, t_encode, t_misc;
84 #include <time.h>
85 #endif
86
87 #if defined(PNG_TIME_RFC1123_SUPPORTED)
88 #define PNG_tIME_STRING_LENGTH 29
89 static int tIME_chunk_present = 0;
90 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
91 #endif
92
93 static int verbose = 0;
94
95 int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
96
97 #ifdef __TURBOC__
98 #include <mem.h>
99 #endif
100
101 /* Defined so I can write to a file on gui/windowing platforms */
102 /* #define STDERR stderr */
103 #define STDERR stdout /* For DOS */
104
105 /* In case a system header (e.g., on AIX) defined jmpbuf */
106 #ifdef jmpbuf
107 # undef jmpbuf
108 #endif
109
110 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
111 #ifndef png_jmpbuf
112 # define png_jmpbuf(png_ptr) png_ptr->jmpbuf
113 #endif
114
115 /* Example of using row callbacks to make a simple progress meter */
116 static int status_pass = 1;
117 static int status_dots_requested = 0;
118 static int status_dots = 1;
119
120 void
121 #ifdef PNG_1_0_X
122 PNGAPI
123 #endif
124 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
125 void
126 #ifdef PNG_1_0_X
127 PNGAPI
128 #endif
129 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
130 {
131 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
132 return;
133 if (status_pass != pass)
134 {
135 fprintf(stdout, "\n Pass %d: ", pass);
136 status_pass = pass;
137 status_dots = 31;
138 }
139 status_dots--;
140 if (status_dots == 0)
141 {
142 fprintf(stdout, "\n ");
143 status_dots=30;
144 }
145 fprintf(stdout, "r");
146 }
147
148 void
149 #ifdef PNG_1_0_X
150 PNGAPI
151 #endif
152 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
153 void
154 #ifdef PNG_1_0_X
155 PNGAPI
156 #endif
157 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
158 {
159 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
160 return;
161 fprintf(stdout, "w");
162 }
163
164
165 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
166 /* Example of using user transform callback (we don't transform anything,
167 * but merely examine the row filters. We set this to 256 rather than
168 * 5 in case illegal filter values are present.)
169 */
170 static png_uint_32 filters_used[256];
171 void
172 #ifdef PNG_1_0_X
173 PNGAPI
174 #endif
175 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
176 void
177 #ifdef PNG_1_0_X
178 PNGAPI
179 #endif
180 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
181 {
182 if (png_ptr != NULL && row_info != NULL)
183 ++filters_used[*(data - 1)];
184 }
185 #endif
186
187 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
188 /* Example of using user transform callback (we don't transform anything,
189 * but merely count the zero samples)
190 */
191
192 static png_uint_32 zero_samples;
193
194 void
195 #ifdef PNG_1_0_X
196 PNGAPI
197 #endif
198 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
199 void
200 #ifdef PNG_1_0_X
201 PNGAPI
202 #endif
203 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
204 {
205 png_bytep dp = data;
206 if (png_ptr == NULL)return;
207
208 /* Contents of row_info:
209 * png_uint_32 width width of row
210 * png_uint_32 rowbytes number of bytes in row
211 * png_byte color_type color type of pixels
212 * png_byte bit_depth bit depth of samples
213 * png_byte channels number of channels (1-4)
214 * png_byte pixel_depth bits per pixel (depth*channels)
215 */
216
217 /* Counts the number of zero samples (or zero pixels if color_type is 3 */
218
219 if (row_info->color_type == 0 || row_info->color_type == 3)
220 {
221 int pos = 0;
222 png_uint_32 n, nstop;
223 for (n = 0, nstop=row_info->width; n<nstop; n++)
224 {
225 if (row_info->bit_depth == 1)
226 {
227 if (((*dp << pos++ ) & 0x80) == 0)
228 zero_samples++;
229 if (pos == 8)
230 {
231 pos = 0;
232 dp++;
233 }
234 }
235 if (row_info->bit_depth == 2)
236 {
237 if (((*dp << (pos+=2)) & 0xc0) == 0)
238 zero_samples++;
239 if (pos == 8)
240 {
241 pos = 0;
242 dp++;
243 }
244 }
245 if (row_info->bit_depth == 4)
246 {
247 if (((*dp << (pos+=4)) & 0xf0) == 0)
248 zero_samples++;
249 if (pos == 8)
250 {
251 pos = 0;
252 dp++;
253 }
254 }
255 if (row_info->bit_depth == 8)
256 if (*dp++ == 0)
257 zero_samples++;
258 if (row_info->bit_depth == 16)
259 {
260 if ((*dp | *(dp+1)) == 0)
261 zero_samples++;
262 dp+=2;
263 }
264 }
265 }
266 else /* Other color types */
267 {
268 png_uint_32 n, nstop;
269 int channel;
270 int color_channels = row_info->channels;
271 if (row_info->color_type > 3)color_channels--;
272
273 for (n = 0, nstop=row_info->width; n<nstop; n++)
274 {
275 for (channel = 0; channel < color_channels; channel++)
276 {
277 if (row_info->bit_depth == 8)
278 if (*dp++ == 0)
279 zero_samples++;
280 if (row_info->bit_depth == 16)
281 {
282 if ((*dp | *(dp+1)) == 0)
283 zero_samples++;
284 dp+=2;
285 }
286 }
287 if (row_info->color_type > 3)
288 {
289 dp++;
290 if (row_info->bit_depth == 16)
291 dp++;
292 }
293 }
294 }
295 }
296 #endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
297
298 static int wrote_question = 0;
299
300 #if defined(PNG_NO_STDIO)
301 /* START of code to validate stdio-free compilation */
302 /* These copies of the default read/write functions come from pngrio.c and
303 * pngwio.c. They allow "don't include stdio" testing of the library.
304 * This is the function that does the actual reading of data. If you are
305 * not reading from a standard C stream, you should create a replacement
306 * read_data function and use it at run time with png_set_read_fn(), rather
307 * than changing the library.
308 */
309
310 #ifndef USE_FAR_KEYWORD
311 static void
312 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
313 {
314 png_size_t check;
315
316 /* fread() returns 0 on error, so it is OK to store this in a png_size_t
317 * instead of an int, which is what fread() actually returns.
318 */
319 READFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
320
321 if (check != length)
322 {
323 png_error(png_ptr, "Read Error!");
324 }
325 }
326 #else
327 /* This is the model-independent version. Since the standard I/O library
328 can't handle far buffers in the medium and small models, we have to copy
329 the data.
330 */
331
332 #define NEAR_BUF_SIZE 1024
333 #define MIN(a,b) (a <= b ? a : b)
334
335 static void
336 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
337 {
338 int check;
339 png_byte *n_data;
340 png_FILE_p io_ptr;
341
342 /* Check if data really is near. If so, use usual code. */
343 n_data = (png_byte *)CVT_PTR_NOCHECK(data);
344 io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
345 if ((png_bytep)n_data == data)
346 {
347 READFILE(io_ptr, n_data, length, check);
348 }
349 else
350 {
351 png_byte buf[NEAR_BUF_SIZE];
352 png_size_t read, remaining, err;
353 check = 0;
354 remaining = length;
355 do
356 {
357 read = MIN(NEAR_BUF_SIZE, remaining);
358 READFILE(io_ptr, buf, 1, err);
359 png_memcpy(data, buf, read); /* Copy far buffer to near buffer */
360 if (err != read)
361 break;
362 else
363 check += err;
364 data += read;
365 remaining -= read;
366 }
367 while (remaining != 0);
368 }
369 if (check != length)
370 png_error(png_ptr, "read Error");
371 }
372 #endif /* USE_FAR_KEYWORD */
373
374 #if defined(PNG_WRITE_FLUSH_SUPPORTED)
375 static void
376 pngtest_flush(png_structp png_ptr)
377 {
378 /* Do nothing; fflush() is said to be just a waste of energy. */
379 png_ptr = png_ptr; /* Stifle compiler warning */
380 }
381 #endif
382
383 /* This is the function that does the actual writing of data. If you are
384 * not writing to a standard C stream, you should create a replacement
385 * write_data function and use it at run time with png_set_write_fn(), rather
386 * than changing the library.
387 */
388 #ifndef USE_FAR_KEYWORD
389 static void
390 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
391 {
392 png_uint_32 check;
393
394 WRITEFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
395 if (check != length)
396 {
397 png_error(png_ptr, "Write Error");
398 }
399 }
400 #else
401 /* This is the model-independent version. Since the standard I/O library
402 can't handle far buffers in the medium and small models, we have to copy
403 the data.
404 */
405
406 #define NEAR_BUF_SIZE 1024
407 #define MIN(a,b) (a <= b ? a : b)
408
409 static void
410 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
411 {
412 png_uint_32 check;
413 png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
414 png_FILE_p io_ptr;
415
416 /* Check if data really is near. If so, use usual code. */
417 near_data = (png_byte *)CVT_PTR_NOCHECK(data);
418 io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
419 if ((png_bytep)near_data == data)
420 {
421 WRITEFILE(io_ptr, near_data, length, check);
422 }
423 else
424 {
425 png_byte buf[NEAR_BUF_SIZE];
426 png_size_t written, remaining, err;
427 check = 0;
428 remaining = length;
429 do
430 {
431 written = MIN(NEAR_BUF_SIZE, remaining);
432 png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
433 WRITEFILE(io_ptr, buf, written, err);
434 if (err != written)
435 break;
436 else
437 check += err;
438 data += written;
439 remaining -= written;
440 }
441 while (remaining != 0);
442 }
443 if (check != length)
444 {
445 png_error(png_ptr, "Write Error");
446 }
447 }
448 #endif /* USE_FAR_KEYWORD */
449
450 /* This function is called when there is a warning, but the library thinks
451 * it can continue anyway. Replacement functions don't have to do anything
452 * here if you don't want to. In the default configuration, png_ptr is
453 * not used, but it is passed in case it may be useful.
454 */
455 static void
456 pngtest_warning(png_structp png_ptr, png_const_charp message)
457 {
458 PNG_CONST char *name = "UNKNOWN (ERROR!)";
459 if (png_ptr != NULL && png_ptr->error_ptr != NULL)
460 name = png_ptr->error_ptr;
461 fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
462 }
463
464 /* This is the default error handling function. Note that replacements for
465 * this function MUST NOT RETURN, or the program will likely crash. This
466 * function is used by default, or if the program supplies NULL for the
467 * error function pointer in png_set_error_fn().
468 */
469 static void
470 pngtest_error(png_structp png_ptr, png_const_charp message)
471 {
472 pngtest_warning(png_ptr, message);
473 /* We can return because png_error calls the default handler, which is
474 * actually OK in this case.
475 */
476 }
477 #endif /* PNG_NO_STDIO */
478 /* END of code to validate stdio-free compilation */
479
480 /* START of code to validate memory allocation and deallocation */
481 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
482
483 /* Allocate memory. For reasonable files, size should never exceed
484 * 64K. However, zlib may allocate more then 64K if you don't tell
485 * it not to. See zconf.h and png.h for more information. zlib does
486 * need to allocate exactly 64K, so whatever you call here must
487 * have the ability to do that.
488 *
489 * This piece of code can be compiled to validate max 64K allocations
490 * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
491 */
492 typedef struct memory_information
493 {
494 png_uint_32 size;
495 png_voidp pointer;
496 struct memory_information FAR *next;
497 } memory_information;
498 typedef memory_information FAR *memory_infop;
499
500 static memory_infop pinformation = NULL;
501 static int current_allocation = 0;
502 static int maximum_allocation = 0;
503 static int total_allocation = 0;
504 static int num_allocations = 0;
505
506 png_voidp png_debug_malloc PNGARG((png_structp png_ptr, png_uint_32 size));
507 void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
508
509 png_voidp
510 png_debug_malloc(png_structp png_ptr, png_uint_32 size)
511 {
512
513 /* png_malloc has already tested for NULL; png_create_struct calls
514 * png_debug_malloc directly, with png_ptr == NULL which is OK
515 */
516
517 if (size == 0)
518 return (NULL);
519
520 /* This calls the library allocator twice, once to get the requested
521 buffer and once to get a new free list entry. */
522 {
523 /* Disable malloc_fn and free_fn */
524 memory_infop pinfo;
525 png_set_mem_fn(png_ptr, NULL, NULL, NULL);
526 pinfo = (memory_infop)png_malloc(png_ptr,
527 (png_uint_32)png_sizeof(*pinfo));
528 pinfo->size = size;
529 current_allocation += size;
530 total_allocation += size;
531 num_allocations ++;
532 if (current_allocation > maximum_allocation)
533 maximum_allocation = current_allocation;
534 pinfo->pointer = (png_voidp)png_malloc(png_ptr, size);
535 /* Restore malloc_fn and free_fn */
536 png_set_mem_fn(png_ptr,
537 png_voidp_NULL, (png_malloc_ptr)png_debug_malloc,
538 (png_free_ptr)png_debug_free);
539 if (size != 0 && pinfo->pointer == NULL)
540 {
541 current_allocation -= size;
542 total_allocation -= size;
543 png_error(png_ptr,
544 "out of memory in pngtest->png_debug_malloc.");
545 }
546 pinfo->next = pinformation;
547 pinformation = pinfo;
548 /* Make sure the caller isn't assuming zeroed memory. */
549 png_memset(pinfo->pointer, 0xdd, pinfo->size);
550 if (verbose)
551 printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
552 pinfo->pointer);
553 return (png_voidp)(pinfo->pointer);
554 }
555 }
556
557 /* Free a pointer. It is removed from the list at the same time. */
558 void
559 png_debug_free(png_structp png_ptr, png_voidp ptr)
560 {
561 if (png_ptr == NULL)
562 fprintf(STDERR, "NULL pointer to png_debug_free.\n");
563 if (ptr == 0)
564 {
565 #if 0 /* This happens all the time. */
566 fprintf(STDERR, "WARNING: freeing NULL pointer\n");
567 #endif
568 return;
569 }
570
571 /* Unlink the element from the list. */
572 {
573 memory_infop FAR *ppinfo = &pinformation;
574 for (;;)
575 {
576 memory_infop pinfo = *ppinfo;
577 if (pinfo->pointer == ptr)
578 {
579 *ppinfo = pinfo->next;
580 current_allocation -= pinfo->size;
581 if (current_allocation < 0)
582 fprintf(STDERR, "Duplicate free of memory\n");
583 /* We must free the list element too, but first kill
584 the memory that is to be freed. */
585 png_memset(ptr, 0x55, pinfo->size);
586 png_free_default(png_ptr, pinfo);
587 pinfo = NULL;
588 break;
589 }
590 if (pinfo->next == NULL)
591 {
592 fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
593 break;
594 }
595 ppinfo = &pinfo->next;
596 }
597 }
598
599 /* Finally free the data. */
600 if (verbose)
601 printf("Freeing %x\n", ptr);
602 png_free_default(png_ptr, ptr);
603 ptr = NULL;
604 }
605 #endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
606 /* END of code to test memory allocation/deallocation */
607
608
609 /* Demonstration of user chunk support of the sTER and vpAg chunks */
610 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
611
612 /* (sTER is a public chunk not yet known by libpng. vpAg is a private
613 chunk used in ImageMagick to store "virtual page" size). */
614
615 static png_uint_32 user_chunk_data[4];
616
617 /* 0: sTER mode + 1
618 * 1: vpAg width
619 * 2: vpAg height
620 * 3: vpAg units
621 */
622
623 static int read_user_chunk_callback(png_struct *png_ptr,
624 png_unknown_chunkp chunk)
625 {
626 png_uint_32
627 *my_user_chunk_data;
628
629 /* Return one of the following:
630 * return (-n); chunk had an error
631 * return (0); did not recognize
632 * return (n); success
633 *
634 * The unknown chunk structure contains the chunk data:
635 * png_byte name[5];
636 * png_byte *data;
637 * png_size_t size;
638 *
639 * Note that libpng has already taken care of the CRC handling.
640 */
641
642 if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
643 chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
644 {
645 /* Found sTER chunk */
646 if (chunk->size != 1)
647 return (-1); /* Error return */
648 if (chunk->data[0] != 0 && chunk->data[0] != 1)
649 return (-1); /* Invalid mode */
650 my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
651 my_user_chunk_data[0]=chunk->data[0]+1;
652 return (1);
653 }
654
655 if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
656 chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
657 return (0); /* Did not recognize */
658
659 /* Found ImageMagick vpAg chunk */
660
661 if (chunk->size != 9)
662 return (-1); /* Error return */
663
664 my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
665
666 my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
667 my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
668 my_user_chunk_data[3]=(png_uint_32)chunk->data[8];
669
670 return (1);
671
672 }
673 #endif
674 /* END of code to demonstrate user chunk support */
675
676 /* Test one file */
677 int
678 test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
679 {
680 static png_FILE_p fpin;
681 static png_FILE_p fpout; /* "static" prevents setjmp corruption */
682 png_structp read_ptr;
683 png_infop read_info_ptr, end_info_ptr;
684 #ifdef PNG_WRITE_SUPPORTED
685 png_structp write_ptr;
686 png_infop write_info_ptr;
687 png_infop write_end_info_ptr;
688 #else
689 png_structp write_ptr = NULL;
690 png_infop write_info_ptr = NULL;
691 png_infop write_end_info_ptr = NULL;
692 #endif
693 png_bytep row_buf;
694 png_uint_32 y;
695 png_uint_32 width, height;
696 int num_pass, pass;
697 int bit_depth, color_type;
698 #ifdef PNG_SETJMP_SUPPORTED
699 #ifdef USE_FAR_KEYWORD
700 jmp_buf jmpbuf;
701 #endif
702 #endif
703
704 #if defined(_WIN32_WCE)
705 TCHAR path[MAX_PATH];
706 #endif
707 char inbuf[256], outbuf[256];
708
709 row_buf = NULL;
710
711 #if defined(_WIN32_WCE)
712 MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
713 if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
714 #else
715 if ((fpin = fopen(inname, "rb")) == NULL)
716 #endif
717 {
718 fprintf(STDERR, "Could not find input file %s\n", inname);
719 return (1);
720 }
721
722 #if defined(_WIN32_WCE)
723 MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
724 if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL)) == INVALID_HANDLE_VALUE)
725 #else
726 if ((fpout = fopen(outname, "wb")) == NULL)
727 #endif
728 {
729 fprintf(STDERR, "Could not open output file %s\n", outname);
730 FCLOSE(fpin);
731 return (1);
732 }
733
734 png_debug(0, "Allocating read and write structures");
735 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
736 read_ptr =
737 png_create_read_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
738 png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
739 (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
740 #else
741 read_ptr =
742 png_create_read_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
743 png_error_ptr_NULL, png_error_ptr_NULL);
744 #endif
745 #if defined(PNG_NO_STDIO)
746 png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
747 pngtest_warning);
748 #endif
749
750 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
751 user_chunk_data[0] = 0;
752 user_chunk_data[1] = 0;
753 user_chunk_data[2] = 0;
754 user_chunk_data[3] = 0;
755 png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
756 read_user_chunk_callback);
757
758 #endif
759 #ifdef PNG_WRITE_SUPPORTED
760 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
761 write_ptr =
762 png_create_write_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
763 png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
764 (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
765 #else
766 write_ptr =
767 png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
768 png_error_ptr_NULL, png_error_ptr_NULL);
769 #endif
770 #if defined(PNG_NO_STDIO)
771 png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
772 pngtest_warning);
773 #endif
774 #endif
775 png_debug(0, "Allocating read_info, write_info and end_info structures");
776 read_info_ptr = png_create_info_struct(read_ptr);
777 end_info_ptr = png_create_info_struct(read_ptr);
778 #ifdef PNG_WRITE_SUPPORTED
779 write_info_ptr = png_create_info_struct(write_ptr);
780 write_end_info_ptr = png_create_info_struct(write_ptr);
781 #endif
782
783 #ifdef PNG_SETJMP_SUPPORTED
784 png_debug(0, "Setting jmpbuf for read struct");
785 #ifdef USE_FAR_KEYWORD
786 if (setjmp(jmpbuf))
787 #else
788 if (setjmp(png_jmpbuf(read_ptr)))
789 #endif
790 {
791 fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
792 png_free(read_ptr, row_buf);
793 row_buf = NULL;
794 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
795 #ifdef PNG_WRITE_SUPPORTED
796 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
797 png_destroy_write_struct(&write_ptr, &write_info_ptr);
798 #endif
799 FCLOSE(fpin);
800 FCLOSE(fpout);
801 return (1);
802 }
803 #ifdef USE_FAR_KEYWORD
804 png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
805 #endif
806
807 #ifdef PNG_WRITE_SUPPORTED
808 png_debug(0, "Setting jmpbuf for write struct");
809 #ifdef USE_FAR_KEYWORD
810 if (setjmp(jmpbuf))
811 #else
812 if (setjmp(png_jmpbuf(write_ptr)))
813 #endif
814 {
815 fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
816 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
817 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
818 #ifdef PNG_WRITE_SUPPORTED
819 png_destroy_write_struct(&write_ptr, &write_info_ptr);
820 #endif
821 FCLOSE(fpin);
822 FCLOSE(fpout);
823 return (1);
824 }
825 #ifdef USE_FAR_KEYWORD
826 png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
827 #endif
828 #endif
829 #endif
830
831 png_debug(0, "Initializing input and output streams");
832 #if !defined(PNG_NO_STDIO)
833 png_init_io(read_ptr, fpin);
834 # ifdef PNG_WRITE_SUPPORTED
835 png_init_io(write_ptr, fpout);
836 # endif
837 #else
838 png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
839 # ifdef PNG_WRITE_SUPPORTED
840 png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
841 # if defined(PNG_WRITE_FLUSH_SUPPORTED)
842 pngtest_flush);
843 # else
844 NULL);
845 # endif
846 # endif
847 #endif
848 if (status_dots_requested == 1)
849 {
850 #ifdef PNG_WRITE_SUPPORTED
851 png_set_write_status_fn(write_ptr, write_row_callback);
852 #endif
853 png_set_read_status_fn(read_ptr, read_row_callback);
854 }
855 else
856 {
857 #ifdef PNG_WRITE_SUPPORTED
858 png_set_write_status_fn(write_ptr, png_write_status_ptr_NULL);
859 #endif
860 png_set_read_status_fn(read_ptr, png_read_status_ptr_NULL);
861 }
862
863 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
864 {
865 int i;
866 for (i = 0; i<256; i++)
867 filters_used[i] = 0;
868 png_set_read_user_transform_fn(read_ptr, count_filters);
869 }
870 #endif
871 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
872 zero_samples = 0;
873 png_set_write_user_transform_fn(write_ptr, count_zero_samples);
874 #endif
875
876 #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
877 # ifndef PNG_HANDLE_CHUNK_ALWAYS
878 # define PNG_HANDLE_CHUNK_ALWAYS 3
879 # endif
880 png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
881 png_bytep_NULL, 0);
882 #endif
883 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
884 # ifndef PNG_HANDLE_CHUNK_IF_SAFE
885 # define PNG_HANDLE_CHUNK_IF_SAFE 2
886 # endif
887 png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE,
888 png_bytep_NULL, 0);
889 #endif
890
891 png_debug(0, "Reading info struct");
892 png_read_info(read_ptr, read_info_ptr);
893
894 png_debug(0, "Transferring info struct");
895 {
896 int interlace_type, compression_type, filter_type;
897
898 if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
899 &color_type, &interlace_type, &compression_type, &filter_type))
900 {
901 png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
902 #if defined(PNG_WRITE_INTERLACING_SUPPORTED)
903 color_type, interlace_type, compression_type, filter_type);
904 #else
905 color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
906 #endif
907 }
908 }
909 #if defined(PNG_FIXED_POINT_SUPPORTED)
910 #if defined(PNG_cHRM_SUPPORTED)
911 {
912 png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
913 blue_y;
914 if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
915 &red_y, &green_x, &green_y, &blue_x, &blue_y))
916 {
917 png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
918 red_y, green_x, green_y, blue_x, blue_y);
919 }
920 }
921 #endif
922 #if defined(PNG_gAMA_SUPPORTED)
923 {
924 png_fixed_point gamma;
925
926 if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
927 png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
928 }
929 #endif
930 #else /* Use floating point versions */
931 #if defined(PNG_FLOATING_POINT_SUPPORTED)
932 #if defined(PNG_cHRM_SUPPORTED)
933 {
934 double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
935 blue_y;
936 if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
937 &red_y, &green_x, &green_y, &blue_x, &blue_y))
938 {
939 png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
940 red_y, green_x, green_y, blue_x, blue_y);
941 }
942 }
943 #endif
944 #if defined(PNG_gAMA_SUPPORTED)
945 {
946 double gamma;
947
948 if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
949 png_set_gAMA(write_ptr, write_info_ptr, gamma);
950 }
951 #endif
952 #endif /* Floating point */
953 #endif /* Fixed point */
954 #if defined(PNG_iCCP_SUPPORTED)
955 {
956 png_charp name;
957 png_charp profile;
958 png_uint_32 proflen;
959 int compression_type;
960
961 if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
962 &profile, &proflen))
963 {
964 png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
965 profile, proflen);
966 }
967 }
968 #endif
969 #if defined(PNG_sRGB_SUPPORTED)
970 {
971 int intent;
972
973 if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
974 png_set_sRGB(write_ptr, write_info_ptr, intent);
975 }
976 #endif
977 {
978 png_colorp palette;
979 int num_palette;
980
981 if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
982 png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
983 }
984 #if defined(PNG_bKGD_SUPPORTED)
985 {
986 png_color_16p background;
987
988 if (png_get_bKGD(read_ptr, read_info_ptr, &background))
989 {
990 png_set_bKGD(write_ptr, write_info_ptr, background);
991 }
992 }
993 #endif
994 #if defined(PNG_hIST_SUPPORTED)
995 {
996 png_uint_16p hist;
997
998 if (png_get_hIST(read_ptr, read_info_ptr, &hist))
999 png_set_hIST(write_ptr, write_info_ptr, hist);
1000 }
1001 #endif
1002 #if defined(PNG_oFFs_SUPPORTED)
1003 {
1004 png_int_32 offset_x, offset_y;
1005 int unit_type;
1006
1007 if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
1008 &unit_type))
1009 {
1010 png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
1011 }
1012 }
1013 #endif
1014 #if defined(PNG_pCAL_SUPPORTED)
1015 {
1016 png_charp purpose, units;
1017 png_charpp params;
1018 png_int_32 X0, X1;
1019 int type, nparams;
1020
1021 if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
1022 &nparams, &units, &params))
1023 {
1024 png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
1025 nparams, units, params);
1026 }
1027 }
1028 #endif
1029 #if defined(PNG_pHYs_SUPPORTED)
1030 {
1031 png_uint_32 res_x, res_y;
1032 int unit_type;
1033
1034 if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
1035 png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
1036 }
1037 #endif
1038 #if defined(PNG_sBIT_SUPPORTED)
1039 {
1040 png_color_8p sig_bit;
1041
1042 if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
1043 png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
1044 }
1045 #endif
1046 #if defined(PNG_sCAL_SUPPORTED)
1047 #ifdef PNG_FLOATING_POINT_SUPPORTED
1048 {
1049 int unit;
1050 double scal_width, scal_height;
1051
1052 if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
1053 &scal_height))
1054 {
1055 png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
1056 }
1057 }
1058 #else
1059 #ifdef PNG_FIXED_POINT_SUPPORTED
1060 {
1061 int unit;
1062 png_charp scal_width, scal_height;
1063
1064 if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
1065 &scal_height))
1066 {
1067 png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width, scal_height);
1068 }
1069 }
1070 #endif
1071 #endif
1072 #endif
1073 #if defined(PNG_TEXT_SUPPORTED)
1074 {
1075 png_textp text_ptr;
1076 int num_text;
1077
1078 if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
1079 {
1080 png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
1081 png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
1082 }
1083 }
1084 #endif
1085 #if defined(PNG_tIME_SUPPORTED)
1086 {
1087 png_timep mod_time;
1088
1089 if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
1090 {
1091 png_set_tIME(write_ptr, write_info_ptr, mod_time);
1092 #if defined(PNG_TIME_RFC1123_SUPPORTED)
1093 /* We have to use png_memcpy instead of "=" because the string
1094 * pointed to by png_convert_to_rfc1123() gets free'ed before
1095 * we use it.
1096 */
1097 png_memcpy(tIME_string,
1098 png_convert_to_rfc1123(read_ptr, mod_time),
1099 png_sizeof(tIME_string));
1100 tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1101 tIME_chunk_present++;
1102 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1103 }
1104 }
1105 #endif
1106 #if defined(PNG_tRNS_SUPPORTED)
1107 {
1108 png_bytep trans;
1109 int num_trans;
1110 png_color_16p trans_values;
1111
1112 if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
1113 &trans_values))
1114 {
1115 int sample_max = (1 << read_info_ptr->bit_depth);
1116 /* libpng doesn't reject a tRNS chunk with out-of-range samples */
1117 if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
1118 (int)trans_values->gray > sample_max) ||
1119 (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
1120 ((int)trans_values->red > sample_max ||
1121 (int)trans_values->green > sample_max ||
1122 (int)trans_values->blue > sample_max))))
1123 png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
1124 trans_values);
1125 }
1126 }
1127 #endif
1128 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1129 {
1130 png_unknown_chunkp unknowns;
1131 int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
1132 &unknowns);
1133 if (num_unknowns)
1134 {
1135 png_size_t i;
1136 png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
1137 num_unknowns);
1138 /* Copy the locations from the read_info_ptr. The automatically
1139 * generated locations in write_info_ptr are wrong because we
1140 * haven't written anything yet.
1141 */
1142 for (i = 0; i < (png_size_t)num_unknowns; i++)
1143 png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
1144 unknowns[i].location);
1145 }
1146 }
1147 #endif
1148
1149 #ifdef PNG_WRITE_SUPPORTED
1150 png_debug(0, "Writing info struct");
1151
1152 /* If we wanted, we could write info in two steps:
1153 * png_write_info_before_PLTE(write_ptr, write_info_ptr);
1154 */
1155 png_write_info(write_ptr, write_info_ptr);
1156
1157 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
1158 if (user_chunk_data[0] != 0)
1159 {
1160 png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
1161
1162 unsigned char
1163 ster_chunk_data[1];
1164
1165 if (verbose)
1166 fprintf(STDERR, "\n stereo mode = %lu\n",
1167 (unsigned long)(user_chunk_data[0] - 1));
1168 ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
1169 png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
1170 }
1171 if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
1172 {
1173 png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
1174
1175 unsigned char
1176 vpag_chunk_data[9];
1177
1178 if (verbose)
1179 fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n",
1180 (unsigned long)user_chunk_data[1],
1181 (unsigned long)user_chunk_data[2],
1182 (unsigned long)user_chunk_data[3]);
1183 png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
1184 png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
1185 vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
1186 png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
1187 }
1188
1189 #endif
1190 #endif
1191
1192 #ifdef SINGLE_ROWBUF_ALLOC
1193 png_debug(0, "Allocating row buffer...");
1194 row_buf = (png_bytep)png_malloc(read_ptr,
1195 png_get_rowbytes(read_ptr, read_info_ptr));
1196 png_debug1(0, "0x%08lx", (unsigned long)row_buf);
1197 #endif /* SINGLE_ROWBUF_ALLOC */
1198 png_debug(0, "Writing row data");
1199
1200 #if defined(PNG_READ_INTERLACING_SUPPORTED) || \
1201 defined(PNG_WRITE_INTERLACING_SUPPORTED)
1202 num_pass = png_set_interlace_handling(read_ptr);
1203 # ifdef PNG_WRITE_SUPPORTED
1204 png_set_interlace_handling(write_ptr);
1205 # endif
1206 #else
1207 num_pass = 1;
1208 #endif
1209
1210 #ifdef PNGTEST_TIMING
1211 t_stop = (float)clock();
1212 t_misc += (t_stop - t_start);
1213 t_start = t_stop;
1214 #endif
1215 for (pass = 0; pass < num_pass; pass++)
1216 {
1217 png_debug1(0, "Writing row data for pass %d", pass);
1218 for (y = 0; y < height; y++)
1219 {
1220 #ifndef SINGLE_ROWBUF_ALLOC
1221 png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y);
1222 row_buf = (png_bytep)png_malloc(read_ptr,
1223 png_get_rowbytes(read_ptr, read_info_ptr));
1224 png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf,
1225 png_get_rowbytes(read_ptr, read_info_ptr));
1226 #endif /* !SINGLE_ROWBUF_ALLOC */
1227 png_read_rows(read_ptr, (png_bytepp)&row_buf, png_bytepp_NULL, 1);
1228
1229 #ifdef PNG_WRITE_SUPPORTED
1230 #ifdef PNGTEST_TIMING
1231 t_stop = (float)clock();
1232 t_decode += (t_stop - t_start);
1233 t_start = t_stop;
1234 #endif
1235 png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
1236 #ifdef PNGTEST_TIMING
1237 t_stop = (float)clock();
1238 t_encode += (t_stop - t_start);
1239 t_start = t_stop;
1240 #endif
1241 #endif /* PNG_WRITE_SUPPORTED */
1242
1243 #ifndef SINGLE_ROWBUF_ALLOC
1244 png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y);
1245 png_free(read_ptr, row_buf);
1246 row_buf = NULL;
1247 #endif /* !SINGLE_ROWBUF_ALLOC */
1248 }
1249 }
1250
1251 #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
1252 png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
1253 #endif
1254 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1255 png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
1256 #endif
1257
1258 png_debug(0, "Reading and writing end_info data");
1259
1260 png_read_end(read_ptr, end_info_ptr);
1261 #if defined(PNG_TEXT_SUPPORTED)
1262 {
1263 png_textp text_ptr;
1264 int num_text;
1265
1266 if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
1267 {
1268 png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
1269 png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
1270 }
1271 }
1272 #endif
1273 #if defined(PNG_tIME_SUPPORTED)
1274 {
1275 png_timep mod_time;
1276
1277 if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
1278 {
1279 png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
1280 #if defined(PNG_TIME_RFC1123_SUPPORTED)
1281 /* We have to use png_memcpy instead of "=" because the string
1282 pointed to by png_convert_to_rfc1123() gets free'ed before
1283 we use it */
1284 png_memcpy(tIME_string,
1285 png_convert_to_rfc1123(read_ptr, mod_time),
1286 png_sizeof(tIME_string));
1287 tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1288 tIME_chunk_present++;
1289 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1290 }
1291 }
1292 #endif
1293 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1294 {
1295 png_unknown_chunkp unknowns;
1296 int num_unknowns;
1297 num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
1298 &unknowns);
1299 if (num_unknowns)
1300 {
1301 png_size_t i;
1302 png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
1303 num_unknowns);
1304 /* Copy the locations from the read_info_ptr. The automatically
1305 * generated locations in write_end_info_ptr are wrong because we
1306 * haven't written the end_info yet.
1307 */
1308 for (i = 0; i < (png_size_t)num_unknowns; i++)
1309 png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
1310 unknowns[i].location);
1311 }
1312 }
1313 #endif
1314 #ifdef PNG_WRITE_SUPPORTED
1315 png_write_end(write_ptr, write_end_info_ptr);
1316 #endif
1317
1318 #ifdef PNG_EASY_ACCESS_SUPPORTED
1319 if (verbose)
1320 {
1321 png_uint_32 iwidth, iheight;
1322 iwidth = png_get_image_width(write_ptr, write_info_ptr);
1323 iheight = png_get_image_height(write_ptr, write_info_ptr);
1324 fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
1325 (unsigned long)iwidth, (unsigned long)iheight);
1326 }
1327 #endif
1328
1329 png_debug(0, "Destroying data structs");
1330 #ifdef SINGLE_ROWBUF_ALLOC
1331 png_debug(1, "destroying row_buf for read_ptr");
1332 png_free(read_ptr, row_buf);
1333 row_buf = NULL;
1334 #endif /* SINGLE_ROWBUF_ALLOC */
1335 png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr");
1336 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
1337 #ifdef PNG_WRITE_SUPPORTED
1338 png_debug(1, "destroying write_end_info_ptr");
1339 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
1340 png_debug(1, "destroying write_ptr, write_info_ptr");
1341 png_destroy_write_struct(&write_ptr, &write_info_ptr);
1342 #endif
1343 png_debug(0, "Destruction complete.");
1344
1345 FCLOSE(fpin);
1346 FCLOSE(fpout);
1347
1348 png_debug(0, "Opening files for comparison");
1349 #if defined(_WIN32_WCE)
1350 MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
1351 if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
1352 #else
1353 if ((fpin = fopen(inname, "rb")) == NULL)
1354 #endif
1355 {
1356 fprintf(STDERR, "Could not find file %s\n", inname);
1357 return (1);
1358 }
1359
1360 #if defined(_WIN32_WCE)
1361 MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
1362 if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
1363 #else
1364 if ((fpout = fopen(outname, "rb")) == NULL)
1365 #endif
1366 {
1367 fprintf(STDERR, "Could not find file %s\n", outname);
1368 FCLOSE(fpin);
1369 return (1);
1370 }
1371
1372 for (;;)
1373 {
1374 png_size_t num_in, num_out;
1375
1376 READFILE(fpin, inbuf, 1, num_in);
1377 READFILE(fpout, outbuf, 1, num_out);
1378
1379 if (num_in != num_out)
1380 {
1381 fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
1382 inname, outname);
1383 if (wrote_question == 0)
1384 {
1385 fprintf(STDERR,
1386 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1387 inname, PNG_ZBUF_SIZE);
1388 fprintf(STDERR,
1389 "\n filtering heuristic (libpng default), compression");
1390 fprintf(STDERR,
1391 " level (zlib default),\n and zlib version (%s)?\n\n",
1392 ZLIB_VERSION);
1393 wrote_question = 1;
1394 }
1395 FCLOSE(fpin);
1396 FCLOSE(fpout);
1397 return (0);
1398 }
1399
1400 if (!num_in)
1401 break;
1402
1403 if (png_memcmp(inbuf, outbuf, num_in))
1404 {
1405 fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
1406 if (wrote_question == 0)
1407 {
1408 fprintf(STDERR,
1409 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1410 inname, PNG_ZBUF_SIZE);
1411 fprintf(STDERR,
1412 "\n filtering heuristic (libpng default), compression");
1413 fprintf(STDERR,
1414 " level (zlib default),\n and zlib version (%s)?\n\n",
1415 ZLIB_VERSION);
1416 wrote_question = 1;
1417 }
1418 FCLOSE(fpin);
1419 FCLOSE(fpout);
1420 return (0);
1421 }
1422 }
1423
1424 FCLOSE(fpin);
1425 FCLOSE(fpout);
1426
1427 return (0);
1428 }
1429
1430 /* Input and output filenames */
1431 #ifdef RISCOS
1432 static PNG_CONST char *inname = "pngtest/png";
1433 static PNG_CONST char *outname = "pngout/png";
1434 #else
1435 static PNG_CONST char *inname = "pngtest.png";
1436 static PNG_CONST char *outname = "pngout.png";
1437 #endif
1438
1439 int
1440 main(int argc, char *argv[])
1441 {
1442 int multiple = 0;
1443 int ierror = 0;
1444
1445 fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
1446 fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
1447 fprintf(STDERR, "%s", png_get_copyright(NULL));
1448 /* Show the version of libpng used in building the library */
1449 fprintf(STDERR, " library (%lu):%s",
1450 (unsigned long)png_access_version_number(),
1451 png_get_header_version(NULL));
1452 /* Show the version of libpng used in building the application */
1453 fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
1454 PNG_HEADER_VERSION_STRING);
1455 fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
1456 (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
1457
1458 /* Do some consistency checking on the memory allocation settings, I'm
1459 * not sure this matters, but it is nice to know, the first of these
1460 * tests should be impossible because of the way the macros are set
1461 * in pngconf.h
1462 */
1463 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
1464 fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
1465 #endif
1466 /* I think the following can happen. */
1467 #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
1468 fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
1469 #endif
1470
1471 if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
1472 {
1473 fprintf(STDERR,
1474 "Warning: versions are different between png.h and png.c\n");
1475 fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
1476 fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
1477 ++ierror;
1478 }
1479
1480 if (argc > 1)
1481 {
1482 if (strcmp(argv[1], "-m") == 0)
1483 {
1484 multiple = 1;
1485 status_dots_requested = 0;
1486 }
1487 else if (strcmp(argv[1], "-mv") == 0 ||
1488 strcmp(argv[1], "-vm") == 0 )
1489 {
1490 multiple = 1;
1491 verbose = 1;
1492 status_dots_requested = 1;
1493 }
1494 else if (strcmp(argv[1], "-v") == 0)
1495 {
1496 verbose = 1;
1497 status_dots_requested = 1;
1498 inname = argv[2];
1499 }
1500 else
1501 {
1502 inname = argv[1];
1503 status_dots_requested = 0;
1504 }
1505 }
1506
1507 if (!multiple && argc == 3 + verbose)
1508 outname = argv[2 + verbose];
1509
1510 if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
1511 {
1512 fprintf(STDERR,
1513 "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
1514 argv[0], argv[0]);
1515 fprintf(STDERR,
1516 " reads/writes one PNG file (without -m) or multiple files (-m)\n");
1517 fprintf(STDERR,
1518 " with -m %s is used as a temporary file\n", outname);
1519 exit(1);
1520 }
1521
1522 if (multiple)
1523 {
1524 int i;
1525 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1526 int allocation_now = current_allocation;
1527 #endif
1528 for (i=2; i<argc; ++i)
1529 {
1530 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1531 int k;
1532 #endif
1533 int kerror;
1534 fprintf(STDERR, "\n Testing %s:", argv[i]);
1535 kerror = test_one_file(argv[i], outname);
1536 if (kerror == 0)
1537 {
1538 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
1539 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1540 (unsigned long)zero_samples);
1541 #else
1542 fprintf(STDERR, " PASS\n");
1543 #endif
1544 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1545 for (k = 0; k<256; k++)
1546 if (filters_used[k])
1547 fprintf(STDERR, " Filter %d was used %lu times\n",
1548 k, (unsigned long)filters_used[k]);
1549 #endif
1550 #if defined(PNG_TIME_RFC1123_SUPPORTED)
1551 if (tIME_chunk_present != 0)
1552 fprintf(STDERR, " tIME = %s\n", tIME_string);
1553 tIME_chunk_present = 0;
1554 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1555 }
1556 else
1557 {
1558 fprintf(STDERR, " FAIL\n");
1559 ierror += kerror;
1560 }
1561 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1562 if (allocation_now != current_allocation)
1563 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1564 current_allocation - allocation_now);
1565 if (current_allocation != 0)
1566 {
1567 memory_infop pinfo = pinformation;
1568
1569 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1570 current_allocation);
1571 while (pinfo != NULL)
1572 {
1573 fprintf(STDERR, " %lu bytes at %x\n",
1574 (unsigned long)pinfo->size,
1575 (unsigned int) pinfo->pointer);
1576 pinfo = pinfo->next;
1577 }
1578 }
1579 #endif
1580 }
1581 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1582 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1583 current_allocation);
1584 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1585 maximum_allocation);
1586 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1587 total_allocation);
1588 fprintf(STDERR, " Number of allocations: %10d\n",
1589 num_allocations);
1590 #endif
1591 }
1592 else
1593 {
1594 int i;
1595 for (i = 0; i<3; ++i)
1596 {
1597 int kerror;
1598 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1599 int allocation_now = current_allocation;
1600 #endif
1601 if (i == 1) status_dots_requested = 1;
1602 else if (verbose == 0)status_dots_requested = 0;
1603 if (i == 0 || verbose == 1 || ierror != 0)
1604 fprintf(STDERR, "\n Testing %s:", inname);
1605 kerror = test_one_file(inname, outname);
1606 if (kerror == 0)
1607 {
1608 if (verbose == 1 || i == 2)
1609 {
1610 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1611 int k;
1612 #endif
1613 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
1614 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1615 (unsigned long)zero_samples);
1616 #else
1617 fprintf(STDERR, " PASS\n");
1618 #endif
1619 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1620 for (k = 0; k<256; k++)
1621 if (filters_used[k])
1622 fprintf(STDERR, " Filter %d was used %lu times\n",
1623 k,
1624 (unsigned long)filters_used[k]);
1625 #endif
1626 #if defined(PNG_TIME_RFC1123_SUPPORTED)
1627 if (tIME_chunk_present != 0)
1628 fprintf(STDERR, " tIME = %s\n", tIME_string);
1629 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1630 }
1631 }
1632 else
1633 {
1634 if (verbose == 0 && i != 2)
1635 fprintf(STDERR, "\n Testing %s:", inname);
1636 fprintf(STDERR, " FAIL\n");
1637 ierror += kerror;
1638 }
1639 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1640 if (allocation_now != current_allocation)
1641 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1642 current_allocation - allocation_now);
1643 if (current_allocation != 0)
1644 {
1645 memory_infop pinfo = pinformation;
1646
1647 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1648 current_allocation);
1649 while (pinfo != NULL)
1650 {
1651 fprintf(STDERR, " %lu bytes at %x\n",
1652 (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
1653 pinfo = pinfo->next;
1654 }
1655 }
1656 #endif
1657 }
1658 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1659 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1660 current_allocation);
1661 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1662 maximum_allocation);
1663 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1664 total_allocation);
1665 fprintf(STDERR, " Number of allocations: %10d\n",
1666 num_allocations);
1667 #endif
1668 }
1669
1670 #ifdef PNGTEST_TIMING
1671 t_stop = (float)clock();
1672 t_misc += (t_stop - t_start);
1673 t_start = t_stop;
1674 fprintf(STDERR, " CPU time used = %.3f seconds",
1675 (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
1676 fprintf(STDERR, " (decoding %.3f,\n",
1677 t_decode/(float)CLOCKS_PER_SEC);
1678 fprintf(STDERR, " encoding %.3f ,",
1679 t_encode/(float)CLOCKS_PER_SEC);
1680 fprintf(STDERR, " other %.3f seconds)\n\n",
1681 t_misc/(float)CLOCKS_PER_SEC);
1682 #endif
1683
1684 if (ierror == 0)
1685 fprintf(STDERR, " libpng passes test\n");
1686 else
1687 fprintf(STDERR, " libpng FAILS test\n");
1688 return (int)(ierror != 0);
1689 }
1690
1691 /* Generate a compiler error if there is an old png.h in the search path. */
1692 typedef version_1_2_39 your_png_h_is_not_version_1_2_39;

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