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Update libjpeg from 6b to 8b.
[reactos.git] / reactos / dll / 3rdparty / libpng / pngtest.c
1
2 /* pngtest.c - a simple test program to test libpng
3 *
4 * Last changed in libpng 1.4.1 [February 25, 2010]
5 * Copyright (c) 1998-2010 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 #include "pngpriv.h"
36
37 # include <stdio.h>
38 # include <stdlib.h>
39 # define FCLOSE(file) fclose(file)
40
41 #ifndef PNG_STDIO_SUPPORTED
42 typedef FILE * png_FILE_p;
43 #endif
44
45 /* Makes pngtest verbose so we can find problems (needs to be before png.h) */
46 #ifndef PNG_DEBUG
47 # define PNG_DEBUG 0
48 #endif
49
50 #if !PNG_DEBUG
51 # define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
52 #endif
53
54 /* Turn on CPU timing
55 #define PNGTEST_TIMING
56 */
57
58 #ifndef PNG_FLOATING_POINT_SUPPORTED
59 #undef PNGTEST_TIMING
60 #endif
61
62 #ifdef PNGTEST_TIMING
63 static float t_start, t_stop, t_decode, t_encode, t_misc;
64 #include <time.h>
65 #endif
66
67 #ifdef PNG_TIME_RFC1123_SUPPORTED
68 #define PNG_tIME_STRING_LENGTH 29
69 static int tIME_chunk_present = 0;
70 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
71 #endif
72
73 static int verbose = 0;
74
75 int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
76
77 #ifdef __TURBOC__
78 #include <mem.h>
79 #endif
80
81 /* Defined so I can write to a file on gui/windowing platforms */
82 /* #define STDERR stderr */
83 #define STDERR stdout /* For DOS */
84
85 /* In case a system header (e.g., on AIX) defined jmpbuf */
86 #ifdef jmpbuf
87 # undef jmpbuf
88 #endif
89
90 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
91 #ifndef png_jmpbuf
92 # define png_jmpbuf(png_ptr) png_ptr->jmpbuf
93 #endif
94
95 /* Example of using row callbacks to make a simple progress meter */
96 static int status_pass = 1;
97 static int status_dots_requested = 0;
98 static int status_dots = 1;
99
100 void
101 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
102 void
103 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
104 {
105 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
106 return;
107 if (status_pass != pass)
108 {
109 fprintf(stdout, "\n Pass %d: ", pass);
110 status_pass = pass;
111 status_dots = 31;
112 }
113 status_dots--;
114 if (status_dots == 0)
115 {
116 fprintf(stdout, "\n ");
117 status_dots=30;
118 }
119 fprintf(stdout, "r");
120 }
121
122 void
123 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
124 void
125 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
126 {
127 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
128 return;
129 fprintf(stdout, "w");
130 }
131
132
133 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
134 /* Example of using user transform callback (we don't transform anything,
135 * but merely examine the row filters. We set this to 256 rather than
136 * 5 in case illegal filter values are present.)
137 */
138 static png_uint_32 filters_used[256];
139 void
140 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
141 void
142 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
143 {
144 if (png_ptr != NULL && row_info != NULL)
145 ++filters_used[*(data - 1)];
146 }
147 #endif
148
149 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
150 /* Example of using user transform callback (we don't transform anything,
151 * but merely count the zero samples)
152 */
153
154 static png_uint_32 zero_samples;
155
156 void
157 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
158 void
159 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
160 {
161 png_bytep dp = data;
162 if (png_ptr == NULL)return;
163
164 /* Contents of row_info:
165 * png_uint_32 width width of row
166 * png_uint_32 rowbytes number of bytes in row
167 * png_byte color_type color type of pixels
168 * png_byte bit_depth bit depth of samples
169 * png_byte channels number of channels (1-4)
170 * png_byte pixel_depth bits per pixel (depth*channels)
171 */
172
173 /* Counts the number of zero samples (or zero pixels if color_type is 3 */
174
175 if (row_info->color_type == 0 || row_info->color_type == 3)
176 {
177 int pos = 0;
178 png_uint_32 n, nstop;
179 for (n = 0, nstop=row_info->width; n<nstop; n++)
180 {
181 if (row_info->bit_depth == 1)
182 {
183 if (((*dp << pos++ ) & 0x80) == 0)
184 zero_samples++;
185 if (pos == 8)
186 {
187 pos = 0;
188 dp++;
189 }
190 }
191 if (row_info->bit_depth == 2)
192 {
193 if (((*dp << (pos+=2)) & 0xc0) == 0)
194 zero_samples++;
195 if (pos == 8)
196 {
197 pos = 0;
198 dp++;
199 }
200 }
201 if (row_info->bit_depth == 4)
202 {
203 if (((*dp << (pos+=4)) & 0xf0) == 0)
204 zero_samples++;
205 if (pos == 8)
206 {
207 pos = 0;
208 dp++;
209 }
210 }
211 if (row_info->bit_depth == 8)
212 if (*dp++ == 0)
213 zero_samples++;
214 if (row_info->bit_depth == 16)
215 {
216 if ((*dp | *(dp+1)) == 0)
217 zero_samples++;
218 dp+=2;
219 }
220 }
221 }
222 else /* Other color types */
223 {
224 png_uint_32 n, nstop;
225 int channel;
226 int color_channels = row_info->channels;
227 if (row_info->color_type > 3)color_channels--;
228
229 for (n = 0, nstop=row_info->width; n<nstop; n++)
230 {
231 for (channel = 0; channel < color_channels; channel++)
232 {
233 if (row_info->bit_depth == 8)
234 if (*dp++ == 0)
235 zero_samples++;
236 if (row_info->bit_depth == 16)
237 {
238 if ((*dp | *(dp+1)) == 0)
239 zero_samples++;
240 dp+=2;
241 }
242 }
243 if (row_info->color_type > 3)
244 {
245 dp++;
246 if (row_info->bit_depth == 16)
247 dp++;
248 }
249 }
250 }
251 }
252 #endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
253
254 static int wrote_question = 0;
255
256 #ifndef PNG_STDIO_SUPPORTED
257 /* START of code to validate stdio-free compilation */
258 /* These copies of the default read/write functions come from pngrio.c and
259 * pngwio.c. They allow "don't include stdio" testing of the library.
260 * This is the function that does the actual reading of data. If you are
261 * not reading from a standard C stream, you should create a replacement
262 * read_data function and use it at run time with png_set_read_fn(), rather
263 * than changing the library.
264 */
265
266 #ifndef USE_FAR_KEYWORD
267 static void
268 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
269 {
270 png_size_t check = 0;
271 png_voidp io_ptr;
272
273 /* fread() returns 0 on error, so it is OK to store this in a png_size_t
274 * instead of an int, which is what fread() actually returns.
275 */
276 io_ptr = png_get_io_ptr(png_ptr);
277 if (io_ptr != NULL)
278 {
279 check = fread(data, 1, length, (png_FILE_p)io_ptr);
280 }
281
282 if (check != length)
283 {
284 png_error(png_ptr, "Read Error!");
285 }
286 }
287 #else
288 /* This is the model-independent version. Since the standard I/O library
289 can't handle far buffers in the medium and small models, we have to copy
290 the data.
291 */
292
293 #define NEAR_BUF_SIZE 1024
294 #define MIN(a,b) (a <= b ? a : b)
295
296 static void
297 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
298 {
299 png_size_t check;
300 png_byte *n_data;
301 png_FILE_p io_ptr;
302
303 /* Check if data really is near. If so, use usual code. */
304 n_data = (png_byte *)CVT_PTR_NOCHECK(data);
305 io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
306 if ((png_bytep)n_data == data)
307 {
308 check = fread(n_data, 1, length, io_ptr);
309 }
310 else
311 {
312 png_byte buf[NEAR_BUF_SIZE];
313 png_size_t read, remaining, err;
314 check = 0;
315 remaining = length;
316 do
317 {
318 read = MIN(NEAR_BUF_SIZE, remaining);
319 err = fread(buf, 1, 1, io_ptr);
320 png_memcpy(data, buf, read); /* Copy far buffer to near buffer */
321 if (err != read)
322 break;
323 else
324 check += err;
325 data += read;
326 remaining -= read;
327 }
328 while (remaining != 0);
329 }
330 if (check != length)
331 png_error(png_ptr, "read Error");
332 }
333 #endif /* USE_FAR_KEYWORD */
334
335 #ifdef PNG_WRITE_FLUSH_SUPPORTED
336 static void
337 pngtest_flush(png_structp png_ptr)
338 {
339 /* Do nothing; fflush() is said to be just a waste of energy. */
340 png_ptr = png_ptr; /* Stifle compiler warning */
341 }
342 #endif
343
344 /* This is the function that does the actual writing of data. If you are
345 * not writing to a standard C stream, you should create a replacement
346 * write_data function and use it at run time with png_set_write_fn(), rather
347 * than changing the library.
348 */
349 #ifndef USE_FAR_KEYWORD
350 static void
351 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
352 {
353 png_size_t check;
354
355 check = fwrite(data, 1, length, (png_FILE_p)png_ptr->io_ptr);
356 if (check != length)
357 {
358 png_error(png_ptr, "Write Error");
359 }
360 }
361 #else
362 /* This is the model-independent version. Since the standard I/O library
363 can't handle far buffers in the medium and small models, we have to copy
364 the data.
365 */
366
367 #define NEAR_BUF_SIZE 1024
368 #define MIN(a,b) (a <= b ? a : b)
369
370 static void
371 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
372 {
373 png_size_t check;
374 png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
375 png_FILE_p io_ptr;
376
377 /* Check if data really is near. If so, use usual code. */
378 near_data = (png_byte *)CVT_PTR_NOCHECK(data);
379 io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
380 if ((png_bytep)near_data == data)
381 {
382 check = fwrite(near_data, 1, length, io_ptr);
383 }
384 else
385 {
386 png_byte buf[NEAR_BUF_SIZE];
387 png_size_t written, remaining, err;
388 check = 0;
389 remaining = length;
390 do
391 {
392 written = MIN(NEAR_BUF_SIZE, remaining);
393 png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
394 err = fwrite(buf, 1, written, io_ptr);
395 if (err != written)
396 break;
397 else
398 check += err;
399 data += written;
400 remaining -= written;
401 }
402 while (remaining != 0);
403 }
404 if (check != length)
405 {
406 png_error(png_ptr, "Write Error");
407 }
408 }
409 #endif /* USE_FAR_KEYWORD */
410
411 /* This function is called when there is a warning, but the library thinks
412 * it can continue anyway. Replacement functions don't have to do anything
413 * here if you don't want to. In the default configuration, png_ptr is
414 * not used, but it is passed in case it may be useful.
415 */
416 static void
417 pngtest_warning(png_structp png_ptr, png_const_charp message)
418 {
419 PNG_CONST char *name = "UNKNOWN (ERROR!)";
420 char *test;
421 test = png_get_error_ptr(png_ptr);
422 if (test == NULL)
423 fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
424 else
425 fprintf(STDERR, "%s: libpng warning: %s\n", test, message);
426 }
427
428 /* This is the default error handling function. Note that replacements for
429 * this function MUST NOT RETURN, or the program will likely crash. This
430 * function is used by default, or if the program supplies NULL for the
431 * error function pointer in png_set_error_fn().
432 */
433 static void
434 pngtest_error(png_structp png_ptr, png_const_charp message)
435 {
436 pngtest_warning(png_ptr, message);
437 /* We can return because png_error calls the default handler, which is
438 * actually OK in this case.
439 */
440 }
441 #endif /* !PNG_STDIO_SUPPORTED */
442 /* END of code to validate stdio-free compilation */
443
444 /* START of code to validate memory allocation and deallocation */
445 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
446
447 /* Allocate memory. For reasonable files, size should never exceed
448 * 64K. However, zlib may allocate more then 64K if you don't tell
449 * it not to. See zconf.h and png.h for more information. zlib does
450 * need to allocate exactly 64K, so whatever you call here must
451 * have the ability to do that.
452 *
453 * This piece of code can be compiled to validate max 64K allocations
454 * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
455 */
456 typedef struct memory_information
457 {
458 png_alloc_size_t size;
459 png_voidp pointer;
460 struct memory_information FAR *next;
461 } memory_information;
462 typedef memory_information FAR *memory_infop;
463
464 static memory_infop pinformation = NULL;
465 static int current_allocation = 0;
466 static int maximum_allocation = 0;
467 static int total_allocation = 0;
468 static int num_allocations = 0;
469
470 png_voidp png_debug_malloc
471 PNGARG((png_structp png_ptr, png_alloc_size_t size));
472 void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
473
474 png_voidp
475 png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
476 {
477
478 /* png_malloc has already tested for NULL; png_create_struct calls
479 * png_debug_malloc directly, with png_ptr == NULL which is OK
480 */
481
482 if (size == 0)
483 return (NULL);
484
485 /* This calls the library allocator twice, once to get the requested
486 buffer and once to get a new free list entry. */
487 {
488 /* Disable malloc_fn and free_fn */
489 memory_infop pinfo;
490 png_set_mem_fn(png_ptr, NULL, NULL, NULL);
491 pinfo = (memory_infop)png_malloc(png_ptr,
492 png_sizeof(*pinfo));
493 pinfo->size = size;
494 current_allocation += size;
495 total_allocation += size;
496 num_allocations ++;
497 if (current_allocation > maximum_allocation)
498 maximum_allocation = current_allocation;
499 pinfo->pointer = png_malloc(png_ptr, size);
500 /* Restore malloc_fn and free_fn */
501 png_set_mem_fn(png_ptr,
502 NULL, png_debug_malloc, png_debug_free);
503 if (size != 0 && pinfo->pointer == NULL)
504 {
505 current_allocation -= size;
506 total_allocation -= size;
507 png_error(png_ptr,
508 "out of memory in pngtest->png_debug_malloc");
509 }
510 pinfo->next = pinformation;
511 pinformation = pinfo;
512 /* Make sure the caller isn't assuming zeroed memory. */
513 png_memset(pinfo->pointer, 0xdd, pinfo->size);
514 if (verbose)
515 printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
516 pinfo->pointer);
517 return (png_voidp)(pinfo->pointer);
518 }
519 }
520
521 /* Free a pointer. It is removed from the list at the same time. */
522 void
523 png_debug_free(png_structp png_ptr, png_voidp ptr)
524 {
525 if (png_ptr == NULL)
526 fprintf(STDERR, "NULL pointer to png_debug_free.\n");
527 if (ptr == 0)
528 {
529 #if 0 /* This happens all the time. */
530 fprintf(STDERR, "WARNING: freeing NULL pointer\n");
531 #endif
532 return;
533 }
534
535 /* Unlink the element from the list. */
536 {
537 memory_infop FAR *ppinfo = &pinformation;
538 for (;;)
539 {
540 memory_infop pinfo = *ppinfo;
541 if (pinfo->pointer == ptr)
542 {
543 *ppinfo = pinfo->next;
544 current_allocation -= pinfo->size;
545 if (current_allocation < 0)
546 fprintf(STDERR, "Duplicate free of memory\n");
547 /* We must free the list element too, but first kill
548 the memory that is to be freed. */
549 png_memset(ptr, 0x55, pinfo->size);
550 png_free_default(png_ptr, pinfo);
551 pinfo = NULL;
552 break;
553 }
554 if (pinfo->next == NULL)
555 {
556 fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
557 break;
558 }
559 ppinfo = &pinfo->next;
560 }
561 }
562
563 /* Finally free the data. */
564 if (verbose)
565 printf("Freeing %x\n", ptr);
566 png_free_default(png_ptr, ptr);
567 ptr = NULL;
568 }
569 #endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
570 /* END of code to test memory allocation/deallocation */
571
572
573 /* Demonstration of user chunk support of the sTER and vpAg chunks */
574 #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
575
576 /* (sTER is a public chunk not yet known by libpng. vpAg is a private
577 chunk used in ImageMagick to store "virtual page" size). */
578
579 static png_uint_32 user_chunk_data[4];
580
581 /* 0: sTER mode + 1
582 * 1: vpAg width
583 * 2: vpAg height
584 * 3: vpAg units
585 */
586
587 static int read_user_chunk_callback(png_struct *png_ptr,
588 png_unknown_chunkp chunk)
589 {
590 png_uint_32
591 *my_user_chunk_data;
592
593 /* Return one of the following:
594 * return (-n); chunk had an error
595 * return (0); did not recognize
596 * return (n); success
597 *
598 * The unknown chunk structure contains the chunk data:
599 * png_byte name[5];
600 * png_byte *data;
601 * png_size_t size;
602 *
603 * Note that libpng has already taken care of the CRC handling.
604 */
605
606 if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
607 chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
608 {
609 /* Found sTER chunk */
610 if (chunk->size != 1)
611 return (-1); /* Error return */
612 if (chunk->data[0] != 0 && chunk->data[0] != 1)
613 return (-1); /* Invalid mode */
614 my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
615 my_user_chunk_data[0]=chunk->data[0]+1;
616 return (1);
617 }
618
619 if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
620 chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
621 return (0); /* Did not recognize */
622
623 /* Found ImageMagick vpAg chunk */
624
625 if (chunk->size != 9)
626 return (-1); /* Error return */
627
628 my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
629
630 my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
631 my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
632 my_user_chunk_data[3]=(png_uint_32)chunk->data[8];
633
634 return (1);
635
636 }
637 #endif
638 /* END of code to demonstrate user chunk support */
639
640 /* Test one file */
641 int
642 test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
643 {
644 static png_FILE_p fpin;
645 static png_FILE_p fpout; /* "static" prevents setjmp corruption */
646 png_structp read_ptr;
647 png_infop read_info_ptr, end_info_ptr;
648 #ifdef PNG_WRITE_SUPPORTED
649 png_structp write_ptr;
650 png_infop write_info_ptr;
651 png_infop write_end_info_ptr;
652 #else
653 png_structp write_ptr = NULL;
654 png_infop write_info_ptr = NULL;
655 png_infop write_end_info_ptr = NULL;
656 #endif
657 png_bytep row_buf;
658 png_uint_32 y;
659 png_uint_32 width, height;
660 int num_pass, pass;
661 int bit_depth, color_type;
662 #ifdef PNG_SETJMP_SUPPORTED
663 #ifdef USE_FAR_KEYWORD
664 jmp_buf jmpbuf;
665 #endif
666 #endif
667
668 char inbuf[256], outbuf[256];
669
670 row_buf = NULL;
671
672 if ((fpin = fopen(inname, "rb")) == NULL)
673 {
674 fprintf(STDERR, "Could not find input file %s\n", inname);
675 return (1);
676 }
677
678 if ((fpout = fopen(outname, "wb")) == NULL)
679 {
680 fprintf(STDERR, "Could not open output file %s\n", outname);
681 FCLOSE(fpin);
682 return (1);
683 }
684
685 png_debug(0, "Allocating read and write structures");
686 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
687 read_ptr =
688 png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
689 NULL, NULL, NULL,
690 (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
691 #else
692 read_ptr =
693 png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
694 #endif
695 #ifndef PNG_STDIO_SUPPORTED
696 png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
697 pngtest_warning);
698 #endif
699
700 #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
701 user_chunk_data[0] = 0;
702 user_chunk_data[1] = 0;
703 user_chunk_data[2] = 0;
704 user_chunk_data[3] = 0;
705 png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
706 read_user_chunk_callback);
707
708 #endif
709 #ifdef PNG_WRITE_SUPPORTED
710 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
711 write_ptr =
712 png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
713 NULL, NULL, NULL, png_debug_malloc, png_debug_free);
714 #else
715 write_ptr =
716 png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
717 #endif
718 #ifndef PNG_STDIO_SUPPORTED
719 png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
720 pngtest_warning);
721 #endif
722 #endif
723 png_debug(0, "Allocating read_info, write_info and end_info structures");
724 read_info_ptr = png_create_info_struct(read_ptr);
725 end_info_ptr = png_create_info_struct(read_ptr);
726 #ifdef PNG_WRITE_SUPPORTED
727 write_info_ptr = png_create_info_struct(write_ptr);
728 write_end_info_ptr = png_create_info_struct(write_ptr);
729 #endif
730
731 #ifdef PNG_SETJMP_SUPPORTED
732 png_debug(0, "Setting jmpbuf for read struct");
733 #ifdef USE_FAR_KEYWORD
734 if (setjmp(jmpbuf))
735 #else
736 if (setjmp(png_jmpbuf(read_ptr)))
737 #endif
738 {
739 fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
740 png_free(read_ptr, row_buf);
741 row_buf = NULL;
742 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
743 #ifdef PNG_WRITE_SUPPORTED
744 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
745 png_destroy_write_struct(&write_ptr, &write_info_ptr);
746 #endif
747 FCLOSE(fpin);
748 FCLOSE(fpout);
749 return (1);
750 }
751 #ifdef USE_FAR_KEYWORD
752 png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
753 #endif
754
755 #ifdef PNG_WRITE_SUPPORTED
756 png_debug(0, "Setting jmpbuf for write struct");
757 #ifdef USE_FAR_KEYWORD
758 if (setjmp(jmpbuf))
759 #else
760 if (setjmp(png_jmpbuf(write_ptr)))
761 #endif
762 {
763 fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
764 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
765 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
766 #ifdef PNG_WRITE_SUPPORTED
767 png_destroy_write_struct(&write_ptr, &write_info_ptr);
768 #endif
769 FCLOSE(fpin);
770 FCLOSE(fpout);
771 return (1);
772 }
773 #ifdef USE_FAR_KEYWORD
774 png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
775 #endif
776 #endif
777 #endif
778
779 png_debug(0, "Initializing input and output streams");
780 #ifdef PNG_STDIO_SUPPORTED
781 png_init_io(read_ptr, fpin);
782 # ifdef PNG_WRITE_SUPPORTED
783 png_init_io(write_ptr, fpout);
784 # endif
785 #else
786 png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
787 # ifdef PNG_WRITE_SUPPORTED
788 png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
789 # ifdef PNG_WRITE_FLUSH_SUPPORTED
790 pngtest_flush);
791 # else
792 NULL);
793 # endif
794 # endif
795 #endif
796 if (status_dots_requested == 1)
797 {
798 #ifdef PNG_WRITE_SUPPORTED
799 png_set_write_status_fn(write_ptr, write_row_callback);
800 #endif
801 png_set_read_status_fn(read_ptr, read_row_callback);
802 }
803 else
804 {
805 #ifdef PNG_WRITE_SUPPORTED
806 png_set_write_status_fn(write_ptr, NULL);
807 #endif
808 png_set_read_status_fn(read_ptr, NULL);
809 }
810
811 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
812 {
813 int i;
814 for (i = 0; i<256; i++)
815 filters_used[i] = 0;
816 png_set_read_user_transform_fn(read_ptr, count_filters);
817 }
818 #endif
819 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
820 zero_samples = 0;
821 png_set_write_user_transform_fn(write_ptr, count_zero_samples);
822 #endif
823
824 #ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
825 # ifndef PNG_HANDLE_CHUNK_ALWAYS
826 # define PNG_HANDLE_CHUNK_ALWAYS 3
827 # endif
828 png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
829 NULL, 0);
830 #endif
831 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
832 # ifndef PNG_HANDLE_CHUNK_IF_SAFE
833 # define PNG_HANDLE_CHUNK_IF_SAFE 2
834 # endif
835 png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE,
836 NULL, 0);
837 #endif
838
839 png_debug(0, "Reading info struct");
840 png_read_info(read_ptr, read_info_ptr);
841
842 png_debug(0, "Transferring info struct");
843 {
844 int interlace_type, compression_type, filter_type;
845
846 if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
847 &color_type, &interlace_type, &compression_type, &filter_type))
848 {
849 png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
850 #ifdef PNG_WRITE_INTERLACING_SUPPORTED
851 color_type, interlace_type, compression_type, filter_type);
852 #else
853 color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
854 #endif
855 }
856 }
857 #ifdef PNG_FIXED_POINT_SUPPORTED
858 #ifdef PNG_cHRM_SUPPORTED
859 {
860 png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
861 blue_y;
862 if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
863 &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
864 {
865 png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
866 red_y, green_x, green_y, blue_x, blue_y);
867 }
868 }
869 #endif
870 #ifdef PNG_gAMA_SUPPORTED
871 {
872 png_fixed_point gamma;
873
874 if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
875 png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
876 }
877 #endif
878 #else /* Use floating point versions */
879 #ifdef PNG_FLOATING_POINT_SUPPORTED
880 #ifdef PNG_cHRM_SUPPORTED
881 {
882 double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
883 blue_y;
884 if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
885 &red_y, &green_x, &green_y, &blue_x, &blue_y))
886 {
887 png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
888 red_y, green_x, green_y, blue_x, blue_y);
889 }
890 }
891 #endif
892 #ifdef PNG_gAMA_SUPPORTED
893 {
894 double gamma;
895
896 if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
897 png_set_gAMA(write_ptr, write_info_ptr, gamma);
898 }
899 #endif
900 #endif /* Floating point */
901 #endif /* Fixed point */
902 #ifdef PNG_iCCP_SUPPORTED
903 {
904 png_charp name;
905 png_charp profile;
906 png_uint_32 proflen;
907 int compression_type;
908
909 if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
910 &profile, &proflen))
911 {
912 png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
913 profile, proflen);
914 }
915 }
916 #endif
917 #ifdef PNG_sRGB_SUPPORTED
918 {
919 int intent;
920
921 if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
922 png_set_sRGB(write_ptr, write_info_ptr, intent);
923 }
924 #endif
925 {
926 png_colorp palette;
927 int num_palette;
928
929 if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
930 png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
931 }
932 #ifdef PNG_bKGD_SUPPORTED
933 {
934 png_color_16p background;
935
936 if (png_get_bKGD(read_ptr, read_info_ptr, &background))
937 {
938 png_set_bKGD(write_ptr, write_info_ptr, background);
939 }
940 }
941 #endif
942 #ifdef PNG_hIST_SUPPORTED
943 {
944 png_uint_16p hist;
945
946 if (png_get_hIST(read_ptr, read_info_ptr, &hist))
947 png_set_hIST(write_ptr, write_info_ptr, hist);
948 }
949 #endif
950 #ifdef PNG_oFFs_SUPPORTED
951 {
952 png_int_32 offset_x, offset_y;
953 int unit_type;
954
955 if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
956 &unit_type))
957 {
958 png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
959 }
960 }
961 #endif
962 #ifdef PNG_pCAL_SUPPORTED
963 {
964 png_charp purpose, units;
965 png_charpp params;
966 png_int_32 X0, X1;
967 int type, nparams;
968
969 if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
970 &nparams, &units, &params))
971 {
972 png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
973 nparams, units, params);
974 }
975 }
976 #endif
977 #ifdef PNG_pHYs_SUPPORTED
978 {
979 png_uint_32 res_x, res_y;
980 int unit_type;
981
982 if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
983 png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
984 }
985 #endif
986 #ifdef PNG_sBIT_SUPPORTED
987 {
988 png_color_8p sig_bit;
989
990 if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
991 png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
992 }
993 #endif
994 #ifdef PNG_sCAL_SUPPORTED
995 #ifdef PNG_FLOATING_POINT_SUPPORTED
996 {
997 int unit;
998 double scal_width, scal_height;
999
1000 if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
1001 &scal_height))
1002 {
1003 png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
1004 }
1005 }
1006 #else
1007 #ifdef PNG_FIXED_POINT_SUPPORTED
1008 {
1009 int unit;
1010 png_charp scal_width, scal_height;
1011
1012 if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
1013 &scal_height))
1014 {
1015 png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
1016 scal_height);
1017 }
1018 }
1019 #endif
1020 #endif
1021 #endif
1022 #ifdef PNG_TEXT_SUPPORTED
1023 {
1024 png_textp text_ptr;
1025 int num_text;
1026
1027 if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
1028 {
1029 png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
1030 png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
1031 }
1032 }
1033 #endif
1034 #ifdef PNG_tIME_SUPPORTED
1035 {
1036 png_timep mod_time;
1037
1038 if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
1039 {
1040 png_set_tIME(write_ptr, write_info_ptr, mod_time);
1041 #ifdef PNG_TIME_RFC1123_SUPPORTED
1042 /* We have to use png_memcpy instead of "=" because the string
1043 * pointed to by png_convert_to_rfc1123() gets free'ed before
1044 * we use it.
1045 */
1046 png_memcpy(tIME_string,
1047 png_convert_to_rfc1123(read_ptr, mod_time),
1048 png_sizeof(tIME_string));
1049 tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1050 tIME_chunk_present++;
1051 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1052 }
1053 }
1054 #endif
1055 #ifdef PNG_tRNS_SUPPORTED
1056 {
1057 png_bytep trans_alpha;
1058 int num_trans;
1059 png_color_16p trans_color;
1060
1061 if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
1062 &trans_color))
1063 {
1064 int sample_max = (1 << bit_depth);
1065 /* libpng doesn't reject a tRNS chunk with out-of-range samples */
1066 if (!((color_type == PNG_COLOR_TYPE_GRAY &&
1067 (int)trans_color->gray > sample_max) ||
1068 (color_type == PNG_COLOR_TYPE_RGB &&
1069 ((int)trans_color->red > sample_max ||
1070 (int)trans_color->green > sample_max ||
1071 (int)trans_color->blue > sample_max))))
1072 png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
1073 trans_color);
1074 }
1075 }
1076 #endif
1077 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1078 {
1079 png_unknown_chunkp unknowns;
1080 int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
1081 &unknowns);
1082 if (num_unknowns)
1083 {
1084 png_size_t i;
1085 png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
1086 num_unknowns);
1087 /* Copy the locations from the read_info_ptr. The automatically
1088 * generated locations in write_info_ptr are wrong because we
1089 * haven't written anything yet.
1090 */
1091 for (i = 0; i < (png_size_t)num_unknowns; i++)
1092 png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
1093 unknowns[i].location);
1094 }
1095 }
1096 #endif
1097
1098 #ifdef PNG_WRITE_SUPPORTED
1099 png_debug(0, "Writing info struct");
1100
1101 /* If we wanted, we could write info in two steps:
1102 * png_write_info_before_PLTE(write_ptr, write_info_ptr);
1103 */
1104 png_write_info(write_ptr, write_info_ptr);
1105
1106 #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
1107 if (user_chunk_data[0] != 0)
1108 {
1109 png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
1110
1111 unsigned char
1112 ster_chunk_data[1];
1113
1114 if (verbose)
1115 fprintf(STDERR, "\n stereo mode = %lu\n",
1116 (unsigned long)(user_chunk_data[0] - 1));
1117 ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
1118 png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
1119 }
1120 if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
1121 {
1122 png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
1123
1124 unsigned char
1125 vpag_chunk_data[9];
1126
1127 if (verbose)
1128 fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n",
1129 (unsigned long)user_chunk_data[1],
1130 (unsigned long)user_chunk_data[2],
1131 (unsigned long)user_chunk_data[3]);
1132 png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
1133 png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
1134 vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
1135 png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
1136 }
1137
1138 #endif
1139 #endif
1140
1141 #ifdef SINGLE_ROWBUF_ALLOC
1142 png_debug(0, "Allocating row buffer...");
1143 row_buf = (png_bytep)png_malloc(read_ptr,
1144 png_get_rowbytes(read_ptr, read_info_ptr));
1145 png_debug1(0, "0x%08lx", (unsigned long)row_buf);
1146 #endif /* SINGLE_ROWBUF_ALLOC */
1147 png_debug(0, "Writing row data");
1148
1149 #if defined(PNG_READ_INTERLACING_SUPPORTED) || \
1150 defined(PNG_WRITE_INTERLACING_SUPPORTED)
1151 num_pass = png_set_interlace_handling(read_ptr);
1152 # ifdef PNG_WRITE_SUPPORTED
1153 png_set_interlace_handling(write_ptr);
1154 # endif
1155 #else
1156 num_pass = 1;
1157 #endif
1158
1159 #ifdef PNGTEST_TIMING
1160 t_stop = (float)clock();
1161 t_misc += (t_stop - t_start);
1162 t_start = t_stop;
1163 #endif
1164 for (pass = 0; pass < num_pass; pass++)
1165 {
1166 png_debug1(0, "Writing row data for pass %d", pass);
1167 for (y = 0; y < height; y++)
1168 {
1169 #ifndef SINGLE_ROWBUF_ALLOC
1170 png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y);
1171 row_buf = (png_bytep)png_malloc(read_ptr,
1172 png_get_rowbytes(read_ptr, read_info_ptr));
1173 png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf,
1174 png_get_rowbytes(read_ptr, read_info_ptr));
1175 #endif /* !SINGLE_ROWBUF_ALLOC */
1176 png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
1177
1178 #ifdef PNG_WRITE_SUPPORTED
1179 #ifdef PNGTEST_TIMING
1180 t_stop = (float)clock();
1181 t_decode += (t_stop - t_start);
1182 t_start = t_stop;
1183 #endif
1184 png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
1185 #ifdef PNGTEST_TIMING
1186 t_stop = (float)clock();
1187 t_encode += (t_stop - t_start);
1188 t_start = t_stop;
1189 #endif
1190 #endif /* PNG_WRITE_SUPPORTED */
1191
1192 #ifndef SINGLE_ROWBUF_ALLOC
1193 png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y);
1194 png_free(read_ptr, row_buf);
1195 row_buf = NULL;
1196 #endif /* !SINGLE_ROWBUF_ALLOC */
1197 }
1198 }
1199
1200 #ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
1201 png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
1202 #endif
1203 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1204 png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
1205 #endif
1206
1207 png_debug(0, "Reading and writing end_info data");
1208
1209 png_read_end(read_ptr, end_info_ptr);
1210 #ifdef PNG_TEXT_SUPPORTED
1211 {
1212 png_textp text_ptr;
1213 int num_text;
1214
1215 if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
1216 {
1217 png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
1218 png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
1219 }
1220 }
1221 #endif
1222 #ifdef PNG_tIME_SUPPORTED
1223 {
1224 png_timep mod_time;
1225
1226 if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
1227 {
1228 png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
1229 #ifdef PNG_TIME_RFC1123_SUPPORTED
1230 /* We have to use png_memcpy instead of "=" because the string
1231 pointed to by png_convert_to_rfc1123() gets free'ed before
1232 we use it */
1233 png_memcpy(tIME_string,
1234 png_convert_to_rfc1123(read_ptr, mod_time),
1235 png_sizeof(tIME_string));
1236 tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1237 tIME_chunk_present++;
1238 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1239 }
1240 }
1241 #endif
1242 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1243 {
1244 png_unknown_chunkp unknowns;
1245 int num_unknowns;
1246 num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
1247 &unknowns);
1248 if (num_unknowns)
1249 {
1250 png_size_t i;
1251 png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
1252 num_unknowns);
1253 /* Copy the locations from the read_info_ptr. The automatically
1254 * generated locations in write_end_info_ptr are wrong because we
1255 * haven't written the end_info yet.
1256 */
1257 for (i = 0; i < (png_size_t)num_unknowns; i++)
1258 png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
1259 unknowns[i].location);
1260 }
1261 }
1262 #endif
1263 #ifdef PNG_WRITE_SUPPORTED
1264 png_write_end(write_ptr, write_end_info_ptr);
1265 #endif
1266
1267 #ifdef PNG_EASY_ACCESS_SUPPORTED
1268 if (verbose)
1269 {
1270 png_uint_32 iwidth, iheight;
1271 iwidth = png_get_image_width(write_ptr, write_info_ptr);
1272 iheight = png_get_image_height(write_ptr, write_info_ptr);
1273 fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
1274 (unsigned long)iwidth, (unsigned long)iheight);
1275 }
1276 #endif
1277
1278 png_debug(0, "Destroying data structs");
1279 #ifdef SINGLE_ROWBUF_ALLOC
1280 png_debug(1, "destroying row_buf for read_ptr");
1281 png_free(read_ptr, row_buf);
1282 row_buf = NULL;
1283 #endif /* SINGLE_ROWBUF_ALLOC */
1284 png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr");
1285 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
1286 #ifdef PNG_WRITE_SUPPORTED
1287 png_debug(1, "destroying write_end_info_ptr");
1288 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
1289 png_debug(1, "destroying write_ptr, write_info_ptr");
1290 png_destroy_write_struct(&write_ptr, &write_info_ptr);
1291 #endif
1292 png_debug(0, "Destruction complete.");
1293
1294 FCLOSE(fpin);
1295 FCLOSE(fpout);
1296
1297 png_debug(0, "Opening files for comparison");
1298 if ((fpin = fopen(inname, "rb")) == NULL)
1299 {
1300 fprintf(STDERR, "Could not find file %s\n", inname);
1301 return (1);
1302 }
1303
1304 if ((fpout = fopen(outname, "rb")) == NULL)
1305 {
1306 fprintf(STDERR, "Could not find file %s\n", outname);
1307 FCLOSE(fpin);
1308 return (1);
1309 }
1310
1311 for (;;)
1312 {
1313 png_size_t num_in, num_out;
1314
1315 num_in = fread(inbuf, 1, 1, fpin);
1316 num_out = fread(outbuf, 1, 1, fpout);
1317
1318 if (num_in != num_out)
1319 {
1320 fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
1321 inname, outname);
1322 if (wrote_question == 0)
1323 {
1324 fprintf(STDERR,
1325 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1326 inname, PNG_ZBUF_SIZE);
1327 fprintf(STDERR,
1328 "\n filtering heuristic (libpng default), compression");
1329 fprintf(STDERR,
1330 " level (zlib default),\n and zlib version (%s)?\n\n",
1331 ZLIB_VERSION);
1332 wrote_question = 1;
1333 }
1334 FCLOSE(fpin);
1335 FCLOSE(fpout);
1336 return (0);
1337 }
1338
1339 if (!num_in)
1340 break;
1341
1342 if (png_memcmp(inbuf, outbuf, num_in))
1343 {
1344 fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
1345 if (wrote_question == 0)
1346 {
1347 fprintf(STDERR,
1348 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1349 inname, PNG_ZBUF_SIZE);
1350 fprintf(STDERR,
1351 "\n filtering heuristic (libpng default), compression");
1352 fprintf(STDERR,
1353 " level (zlib default),\n and zlib version (%s)?\n\n",
1354 ZLIB_VERSION);
1355 wrote_question = 1;
1356 }
1357 FCLOSE(fpin);
1358 FCLOSE(fpout);
1359 return (0);
1360 }
1361 }
1362
1363 FCLOSE(fpin);
1364 FCLOSE(fpout);
1365
1366 return (0);
1367 }
1368
1369 /* Input and output filenames */
1370 #ifdef RISCOS
1371 static PNG_CONST char *inname = "pngtest/png";
1372 static PNG_CONST char *outname = "pngout/png";
1373 #else
1374 static PNG_CONST char *inname = "pngtest.png";
1375 static PNG_CONST char *outname = "pngout.png";
1376 #endif
1377
1378 int
1379 main(int argc, char *argv[])
1380 {
1381 int multiple = 0;
1382 int ierror = 0;
1383
1384 fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
1385 fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
1386 fprintf(STDERR, "%s", png_get_copyright(NULL));
1387 /* Show the version of libpng used in building the library */
1388 fprintf(STDERR, " library (%lu):%s",
1389 (unsigned long)png_access_version_number(),
1390 png_get_header_version(NULL));
1391 /* Show the version of libpng used in building the application */
1392 fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
1393 PNG_HEADER_VERSION_STRING);
1394 fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
1395 (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
1396
1397 /* Do some consistency checking on the memory allocation settings, I'm
1398 * not sure this matters, but it is nice to know, the first of these
1399 * tests should be impossible because of the way the macros are set
1400 * in pngconf.h
1401 */
1402 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
1403 fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
1404 #endif
1405 /* I think the following can happen. */
1406 #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
1407 fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
1408 #endif
1409
1410 if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
1411 {
1412 fprintf(STDERR,
1413 "Warning: versions are different between png.h and png.c\n");
1414 fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
1415 fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
1416 ++ierror;
1417 }
1418
1419 if (argc > 1)
1420 {
1421 if (strcmp(argv[1], "-m") == 0)
1422 {
1423 multiple = 1;
1424 status_dots_requested = 0;
1425 }
1426 else if (strcmp(argv[1], "-mv") == 0 ||
1427 strcmp(argv[1], "-vm") == 0 )
1428 {
1429 multiple = 1;
1430 verbose = 1;
1431 status_dots_requested = 1;
1432 }
1433 else if (strcmp(argv[1], "-v") == 0)
1434 {
1435 verbose = 1;
1436 status_dots_requested = 1;
1437 inname = argv[2];
1438 }
1439 else
1440 {
1441 inname = argv[1];
1442 status_dots_requested = 0;
1443 }
1444 }
1445
1446 if (!multiple && argc == 3 + verbose)
1447 outname = argv[2 + verbose];
1448
1449 if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
1450 {
1451 fprintf(STDERR,
1452 "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
1453 argv[0], argv[0]);
1454 fprintf(STDERR,
1455 " reads/writes one PNG file (without -m) or multiple files (-m)\n");
1456 fprintf(STDERR,
1457 " with -m %s is used as a temporary file\n", outname);
1458 exit(1);
1459 }
1460
1461 if (multiple)
1462 {
1463 int i;
1464 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1465 int allocation_now = current_allocation;
1466 #endif
1467 for (i=2; i<argc; ++i)
1468 {
1469 int kerror;
1470 fprintf(STDERR, "\n Testing %s:", argv[i]);
1471 kerror = test_one_file(argv[i], outname);
1472 if (kerror == 0)
1473 {
1474 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1475 int k;
1476 #endif
1477 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
1478 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1479 (unsigned long)zero_samples);
1480 #else
1481 fprintf(STDERR, " PASS\n");
1482 #endif
1483 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1484 for (k = 0; k<256; k++)
1485 if (filters_used[k])
1486 fprintf(STDERR, " Filter %d was used %lu times\n",
1487 k, (unsigned long)filters_used[k]);
1488 #endif
1489 #ifdef PNG_TIME_RFC1123_SUPPORTED
1490 if (tIME_chunk_present != 0)
1491 fprintf(STDERR, " tIME = %s\n", tIME_string);
1492 tIME_chunk_present = 0;
1493 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1494 }
1495 else
1496 {
1497 fprintf(STDERR, " FAIL\n");
1498 ierror += kerror;
1499 }
1500 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1501 if (allocation_now != current_allocation)
1502 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1503 current_allocation - allocation_now);
1504 if (current_allocation != 0)
1505 {
1506 memory_infop pinfo = pinformation;
1507
1508 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1509 current_allocation);
1510 while (pinfo != NULL)
1511 {
1512 fprintf(STDERR, " %lu bytes at %x\n",
1513 (unsigned long)pinfo->size,
1514 (unsigned int) pinfo->pointer);
1515 pinfo = pinfo->next;
1516 }
1517 }
1518 #endif
1519 }
1520 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1521 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1522 current_allocation);
1523 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1524 maximum_allocation);
1525 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1526 total_allocation);
1527 fprintf(STDERR, " Number of allocations: %10d\n",
1528 num_allocations);
1529 #endif
1530 }
1531 else
1532 {
1533 int i;
1534 for (i = 0; i<3; ++i)
1535 {
1536 int kerror;
1537 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1538 int allocation_now = current_allocation;
1539 #endif
1540 if (i == 1) status_dots_requested = 1;
1541 else if (verbose == 0)status_dots_requested = 0;
1542 if (i == 0 || verbose == 1 || ierror != 0)
1543 fprintf(STDERR, "\n Testing %s:", inname);
1544 kerror = test_one_file(inname, outname);
1545 if (kerror == 0)
1546 {
1547 if (verbose == 1 || i == 2)
1548 {
1549 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1550 int k;
1551 #endif
1552 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
1553 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1554 (unsigned long)zero_samples);
1555 #else
1556 fprintf(STDERR, " PASS\n");
1557 #endif
1558 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1559 for (k = 0; k<256; k++)
1560 if (filters_used[k])
1561 fprintf(STDERR, " Filter %d was used %lu times\n",
1562 k, (unsigned long)filters_used[k]);
1563 #endif
1564 #ifdef PNG_TIME_RFC1123_SUPPORTED
1565 if (tIME_chunk_present != 0)
1566 fprintf(STDERR, " tIME = %s\n", tIME_string);
1567 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1568 }
1569 }
1570 else
1571 {
1572 if (verbose == 0 && i != 2)
1573 fprintf(STDERR, "\n Testing %s:", inname);
1574 fprintf(STDERR, " FAIL\n");
1575 ierror += kerror;
1576 }
1577 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1578 if (allocation_now != current_allocation)
1579 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1580 current_allocation - allocation_now);
1581 if (current_allocation != 0)
1582 {
1583 memory_infop pinfo = pinformation;
1584
1585 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1586 current_allocation);
1587 while (pinfo != NULL)
1588 {
1589 fprintf(STDERR, " %lu bytes at %x\n",
1590 (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
1591 pinfo = pinfo->next;
1592 }
1593 }
1594 #endif
1595 }
1596 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1597 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1598 current_allocation);
1599 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1600 maximum_allocation);
1601 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1602 total_allocation);
1603 fprintf(STDERR, " Number of allocations: %10d\n",
1604 num_allocations);
1605 #endif
1606 }
1607
1608 #ifdef PNGTEST_TIMING
1609 t_stop = (float)clock();
1610 t_misc += (t_stop - t_start);
1611 t_start = t_stop;
1612 fprintf(STDERR, " CPU time used = %.3f seconds",
1613 (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
1614 fprintf(STDERR, " (decoding %.3f,\n",
1615 t_decode/(float)CLOCKS_PER_SEC);
1616 fprintf(STDERR, " encoding %.3f ,",
1617 t_encode/(float)CLOCKS_PER_SEC);
1618 fprintf(STDERR, " other %.3f seconds)\n\n",
1619 t_misc/(float)CLOCKS_PER_SEC);
1620 #endif
1621
1622 if (ierror == 0)
1623 fprintf(STDERR, " libpng passes test\n");
1624 else
1625 fprintf(STDERR, " libpng FAILS test\n");
1626 return (int)(ierror != 0);
1627 }
1628
1629 /* Generate a compiler error if there is an old png.h in the search path. */
1630 typedef version_1_4_3 your_png_h_is_not_version_1_4_3;
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