pngtest.c
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1 
2 /* pngtest.c - a simple test program to test libpng
3  *
4  * Last changed in libpng 1.2.32 [September 18, 2008]
5  * For conditions of distribution and use, see copyright notice in png.h
6  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
7  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
8  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
9  *
10  * This program reads in a PNG image, writes it out again, and then
11  * compares the two files. If the files are identical, this shows that
12  * the basic chunk handling, filtering, and (de)compression code is working
13  * properly. It does not currently test all of the transforms, although
14  * it probably should.
15  *
16  * The program will report "FAIL" in certain legitimate cases:
17  * 1) when the compression level or filter selection method is changed.
18  * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
19  * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
20  * exist in the input file.
21  * 4) others not listed here...
22  * In these cases, it is best to check with another tool such as "pngcheck"
23  * to see what the differences between the two files are.
24  *
25  * If a filename is given on the command-line, then this file is used
26  * for the input, rather than the default "pngtest.png". This allows
27  * testing a wide variety of files easily. You can also test a number
28  * of files at once by typing "pngtest -m file1.png file2.png ..."
29  */
30 
31 #include "png.h"
32 
33 #if defined(_WIN32_WCE)
34 # if _WIN32_WCE < 211
35  __error__ (f|w)printf functions are not supported on old WindowsCE.;
36 # endif
37 # include <windows.h>
38 # include <stdlib.h>
39 # define READFILE(file, data, length, check) \
40  if (ReadFile(file, data, length, &check, NULL)) check = 0
41 # define WRITEFILE(file, data, length, check)) \
42  if (WriteFile(file, data, length, &check, NULL)) check = 0
43 # define FCLOSE(file) CloseHandle(file)
44 #else
45 # include <stdio.h>
46 # include <stdlib.h>
47 # define READFILE(file, data, length, check) \
48  check=(png_size_t)fread(data, (png_size_t)1, length, file)
49 # define WRITEFILE(file, data, length, check) \
50  check=(png_size_t)fwrite(data, (png_size_t)1, length, file)
51 # define FCLOSE(file) fclose(file)
52 #endif
53 
54 #if defined(PNG_NO_STDIO)
55 # if defined(_WIN32_WCE)
56  typedef HANDLE png_FILE_p;
57 # else
58  typedef FILE * png_FILE_p;
59 # endif
60 #endif
61 
62 /* Makes pngtest verbose so we can find problems (needs to be before png.h) */
63 #ifndef PNG_DEBUG
64 # define PNG_DEBUG 0
65 #endif
66 
67 #if !PNG_DEBUG
68 # define SINGLE_ROWBUF_ALLOC /* makes buffer overruns easier to nail */
69 #endif
70 
71 /* Turn on CPU timing
72 #define PNGTEST_TIMING
73 */
74 
75 #ifdef PNG_NO_FLOATING_POINT_SUPPORTED
76 #undef PNGTEST_TIMING
77 #endif
78 
79 #ifdef PNGTEST_TIMING
80 static float t_start, t_stop, t_decode, t_encode, t_misc;
81 #include <time.h>
82 #endif
83 
84 #if defined(PNG_TIME_RFC1123_SUPPORTED)
85 #define PNG_tIME_STRING_LENGTH 29
86 static int tIME_chunk_present = 0;
87 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
88 #endif
89 
90 static int verbose = 0;
91 
93 
94 #ifdef __TURBOC__
95 #include <mem.h>
96 #endif
97 
98 /* defined so I can write to a file on gui/windowing platforms */
99 /* #define STDERR stderr */
100 #define STDERR stdout /* for DOS */
101 
102 /* In case a system header (e.g., on AIX) defined jmpbuf */
103 #ifdef jmpbuf
104 # undef jmpbuf
105 #endif
106 
107 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
108 #ifndef png_jmpbuf
109 # define png_jmpbuf(png_ptr) png_ptr->jmpbuf
110 #endif
111 
112 /* example of using row callbacks to make a simple progress meter */
113 static int status_pass = 1;
114 static int status_dots_requested = 0;
115 static int status_dots = 1;
116 
117 void
118 #ifdef PNG_1_0_X
119 PNGAPI
120 #endif
121 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
122 void
123 #ifdef PNG_1_0_X
124 PNGAPI
125 #endif
126 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
127 {
128  if (png_ptr == NULL || row_number > PNG_UINT_31_MAX) return;
129  if (status_pass != pass)
130  {
131  fprintf(stdout, "\n Pass %d: ", pass);
132  status_pass = pass;
133  status_dots = 31;
134  }
135  status_dots--;
136  if (status_dots == 0)
137  {
138  fprintf(stdout, "\n ");
139  status_dots=30;
140  }
141  fprintf(stdout, "r");
142 }
143 
144 void
145 #ifdef PNG_1_0_X
146 PNGAPI
147 #endif
148 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
149 void
150 #ifdef PNG_1_0_X
151 PNGAPI
152 #endif
153 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
154 {
155  if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) return;
156  fprintf(stdout, "w");
157 }
158 
159 
160 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
161 /* Example of using user transform callback (we don't transform anything,
162  but merely examine the row filters. We set this to 256 rather than
163  5 in case illegal filter values are present.) */
165 void
166 #ifdef PNG_1_0_X
167 PNGAPI
168 #endif
170 void
171 #ifdef PNG_1_0_X
172 PNGAPI
173 #endif
175 {
176  if (png_ptr != NULL && row_info != NULL)
177  ++filters_used[*(data - 1)];
178 }
179 #endif
180 
181 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
182 /* example of using user transform callback (we don't transform anything,
183  but merely count the zero samples) */
184 
186 
187 void
188 #ifdef PNG_1_0_X
189 PNGAPI
190 #endif
192 void
193 #ifdef PNG_1_0_X
194 PNGAPI
195 #endif
197 {
198  png_bytep dp = data;
199  if (png_ptr == NULL)return;
200 
201  /* contents of row_info:
202  * png_uint_32 width width of row
203  * png_uint_32 rowbytes number of bytes in row
204  * png_byte color_type color type of pixels
205  * png_byte bit_depth bit depth of samples
206  * png_byte channels number of channels (1-4)
207  * png_byte pixel_depth bits per pixel (depth*channels)
208  */
209 
210 
211  /* counts the number of zero samples (or zero pixels if color_type is 3 */
212 
213  if (row_info->color_type == 0 || row_info->color_type == 3)
214  {
215  int pos = 0;
216  png_uint_32 n, nstop;
217  for (n = 0, nstop=row_info->width; n<nstop; n++)
218  {
219  if (row_info->bit_depth == 1)
220  {
221  if (((*dp << pos++ ) & 0x80) == 0) zero_samples++;
222  if (pos == 8)
223  {
224  pos = 0;
225  dp++;
226  }
227  }
228  if (row_info->bit_depth == 2)
229  {
230  if (((*dp << (pos+=2)) & 0xc0) == 0) zero_samples++;
231  if (pos == 8)
232  {
233  pos = 0;
234  dp++;
235  }
236  }
237  if (row_info->bit_depth == 4)
238  {
239  if (((*dp << (pos+=4)) & 0xf0) == 0) zero_samples++;
240  if (pos == 8)
241  {
242  pos = 0;
243  dp++;
244  }
245  }
246  if (row_info->bit_depth == 8)
247  if (*dp++ == 0) zero_samples++;
248  if (row_info->bit_depth == 16)
249  {
250  if ((*dp | *(dp+1)) == 0) zero_samples++;
251  dp+=2;
252  }
253  }
254  }
255  else /* other color types */
256  {
257  png_uint_32 n, nstop;
258  int channel;
259  int color_channels = row_info->channels;
260  if (row_info->color_type > 3)color_channels--;
261 
262  for (n = 0, nstop=row_info->width; n<nstop; n++)
263  {
264  for (channel = 0; channel < color_channels; channel++)
265  {
266  if (row_info->bit_depth == 8)
267  if (*dp++ == 0) zero_samples++;
268  if (row_info->bit_depth == 16)
269  {
270  if ((*dp | *(dp+1)) == 0) zero_samples++;
271  dp+=2;
272  }
273  }
274  if (row_info->color_type > 3)
275  {
276  dp++;
277  if (row_info->bit_depth == 16)dp++;
278  }
279  }
280  }
281 }
282 #endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
283 
284 static int wrote_question = 0;
285 
286 #if defined(PNG_NO_STDIO)
287 /* START of code to validate stdio-free compilation */
288 /* These copies of the default read/write functions come from pngrio.c and */
289 /* pngwio.c. They allow "don't include stdio" testing of the library. */
290 /* This is the function that does the actual reading of data. If you are
291  not reading from a standard C stream, you should create a replacement
292  read_data function and use it at run time with png_set_read_fn(), rather
293  than changing the library. */
294 
295 #ifndef USE_FAR_KEYWORD
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 
301  /* fread() returns 0 on error, so it is OK to store this in a png_size_t
302  * instead of an int, which is what fread() actually returns.
303  */
304  READFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
305 
306  if (check != length)
307  {
308  png_error(png_ptr, "Read Error!");
309  }
310 }
311 #else
312 /* this is the model-independent version. Since the standard I/O library
313  can't handle far buffers in the medium and small models, we have to copy
314  the data.
315 */
316 
317 #define NEAR_BUF_SIZE 1024
318 #define MIN(a,b) (a <= b ? a : b)
319 
320 static void
321 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
322 {
323  int check;
324  png_byte *n_data;
326 
327  /* Check if data really is near. If so, use usual code. */
328  n_data = (png_byte *)CVT_PTR_NOCHECK(data);
329  io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
330  if ((png_bytep)n_data == data)
331  {
332  READFILE(io_ptr, n_data, length, check);
333  }
334  else
335  {
336  png_byte buf[NEAR_BUF_SIZE];
337  png_size_t read, remaining, err;
338  check = 0;
339  remaining = length;
340  do
341  {
342  read = MIN(NEAR_BUF_SIZE, remaining);
343  READFILE(io_ptr, buf, 1, err);
344  png_memcpy(data, buf, read); /* copy far buffer to near buffer */
345  if (err != read)
346  break;
347  else
348  check += err;
349  data += read;
350  remaining -= read;
351  }
352  while (remaining != 0);
353  }
354  if (check != length)
355  {
356  png_error(png_ptr, "read Error");
357  }
358 }
359 #endif /* USE_FAR_KEYWORD */
360 
361 #if defined(PNG_WRITE_FLUSH_SUPPORTED)
362 static void
363 pngtest_flush(png_structp png_ptr)
364 {
365 #if !defined(_WIN32_WCE)
367  io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
368  if (io_ptr != NULL)
369  fflush(io_ptr);
370 #endif
371 }
372 #endif
373 
374 /* This is the function that does the actual writing of data. If you are
375  not writing to a standard C stream, you should create a replacement
376  write_data function and use it at run time with png_set_write_fn(), rather
377  than changing the library. */
378 #ifndef USE_FAR_KEYWORD
379 static void
380 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
381 {
382  png_uint_32 check;
383 
384  WRITEFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
385  if (check != length)
386  {
387  png_error(png_ptr, "Write Error");
388  }
389 }
390 #else
391 /* this is the model-independent version. Since the standard I/O library
392  can't handle far buffers in the medium and small models, we have to copy
393  the data.
394 */
395 
396 #define NEAR_BUF_SIZE 1024
397 #define MIN(a,b) (a <= b ? a : b)
398 
399 static void
400 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
401 {
402  png_uint_32 check;
403  png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
405 
406  /* Check if data really is near. If so, use usual code. */
407  near_data = (png_byte *)CVT_PTR_NOCHECK(data);
408  io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
409  if ((png_bytep)near_data == data)
410  {
411  WRITEFILE(io_ptr, near_data, length, check);
412  }
413  else
414  {
415  png_byte buf[NEAR_BUF_SIZE];
416  png_size_t written, remaining, err;
417  check = 0;
418  remaining = length;
419  do
420  {
421  written = MIN(NEAR_BUF_SIZE, remaining);
422  png_memcpy(buf, data, written); /* copy far buffer to near buffer */
423  WRITEFILE(io_ptr, buf, written, err);
424  if (err != written)
425  break;
426  else
427  check += err;
428  data += written;
429  remaining -= written;
430  }
431  while (remaining != 0);
432  }
433  if (check != length)
434  {
435  png_error(png_ptr, "Write Error");
436  }
437 }
438 #endif /* USE_FAR_KEYWORD */
439 
440 /* This function is called when there is a warning, but the library thinks
441  * it can continue anyway. Replacement functions don't have to do anything
442  * here if you don't want to. In the default configuration, png_ptr is
443  * not used, but it is passed in case it may be useful.
444  */
445 static void
446 pngtest_warning(png_structp png_ptr, png_const_charp message)
447 {
448  PNG_CONST char *name = "UNKNOWN (ERROR!)";
449  if (png_ptr != NULL && png_ptr->error_ptr != NULL)
450  name = png_ptr->error_ptr;
451  fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
452 }
453 
454 /* This is the default error handling function. Note that replacements for
455  * this function MUST NOT RETURN, or the program will likely crash. This
456  * function is used by default, or if the program supplies NULL for the
457  * error function pointer in png_set_error_fn().
458  */
459 static void
460 pngtest_error(png_structp png_ptr, png_const_charp message)
461 {
462  pngtest_warning(png_ptr, message);
463  /* We can return because png_error calls the default handler, which is
464  * actually OK in this case. */
465 }
466 #endif /* PNG_NO_STDIO */
467 /* END of code to validate stdio-free compilation */
468 
469 /* START of code to validate memory allocation and deallocation */
470 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
471 
472 /* Allocate memory. For reasonable files, size should never exceed
473  64K. However, zlib may allocate more then 64K if you don't tell
474  it not to. See zconf.h and png.h for more information. zlib does
475  need to allocate exactly 64K, so whatever you call here must
476  have the ability to do that.
477 
478  This piece of code can be compiled to validate max 64K allocations
479  by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. */
480 typedef struct memory_information
481 {
483  png_voidp pointer;
484  struct memory_information FAR *next;
485 } memory_information;
486 typedef memory_information FAR *memory_infop;
487 
488 static memory_infop pinformation = NULL;
489 static int current_allocation = 0;
490 static int maximum_allocation = 0;
491 static int total_allocation = 0;
492 static int num_allocations = 0;
493 
494 png_voidp png_debug_malloc PNGARG((png_structp png_ptr, png_uint_32 size));
495 void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
496 
497 png_voidp
498 png_debug_malloc(png_structp png_ptr, png_uint_32 size)
499 {
500 
501  /* png_malloc has already tested for NULL; png_create_struct calls
502  png_debug_malloc directly, with png_ptr == NULL which is OK */
503 
504  if (size == 0)
505  return (NULL);
506 
507  /* This calls the library allocator twice, once to get the requested
508  buffer and once to get a new free list entry. */
509  {
510  /* Disable malloc_fn and free_fn */
511  memory_infop pinfo;
512  png_set_mem_fn(png_ptr, NULL, NULL, NULL);
513  pinfo = (memory_infop)png_malloc(png_ptr,
514  (png_uint_32)png_sizeof(*pinfo));
515  pinfo->size = size;
516  current_allocation += size;
517  total_allocation += size;
518  num_allocations ++;
519  if (current_allocation > maximum_allocation)
520  maximum_allocation = current_allocation;
521  pinfo->pointer = (png_voidp)png_malloc(png_ptr, size);
522  /* Restore malloc_fn and free_fn */
523  png_set_mem_fn(png_ptr,
524  png_voidp_NULL, (png_malloc_ptr)png_debug_malloc,
525  (png_free_ptr)png_debug_free);
526  if (size != 0 && pinfo->pointer == NULL)
527  {
528  current_allocation -= size;
529  total_allocation -= size;
530  png_error(png_ptr,
531  "out of memory in pngtest->png_debug_malloc.");
532  }
533  pinfo->next = pinformation;
534  pinformation = pinfo;
535  /* Make sure the caller isn't assuming zeroed memory. */
536  png_memset(pinfo->pointer, 0xdd, pinfo->size);
537  if (verbose)
538  printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
539  pinfo->pointer);
540  return (png_voidp)(pinfo->pointer);
541  }
542 }
543 
544 /* Free a pointer. It is removed from the list at the same time. */
545 void
546 png_debug_free(png_structp png_ptr, png_voidp ptr)
547 {
548  if (png_ptr == NULL)
549  fprintf(STDERR, "NULL pointer to png_debug_free.\n");
550  if (ptr == 0)
551  {
552 #if 0 /* This happens all the time. */
553  fprintf(STDERR, "WARNING: freeing NULL pointer\n");
554 #endif
555  return;
556  }
557 
558  /* Unlink the element from the list. */
559  {
560  memory_infop FAR *ppinfo = &pinformation;
561  for (;;)
562  {
563  memory_infop pinfo = *ppinfo;
564  if (pinfo->pointer == ptr)
565  {
566  *ppinfo = pinfo->next;
567  current_allocation -= pinfo->size;
568  if (current_allocation < 0)
569  fprintf(STDERR, "Duplicate free of memory\n");
570  /* We must free the list element too, but first kill
571  the memory that is to be freed. */
572  png_memset(ptr, 0x55, pinfo->size);
573  png_free_default(png_ptr, pinfo);
574  pinfo = NULL;
575  break;
576  }
577  if (pinfo->next == NULL)
578  {
579  fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
580  break;
581  }
582  ppinfo = &pinfo->next;
583  }
584  }
585 
586  /* Finally free the data. */
587  if (verbose)
588  printf("Freeing %x\n", ptr);
589  png_free_default(png_ptr, ptr);
590  ptr = NULL;
591 }
592 #endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
593 /* END of code to test memory allocation/deallocation */
594 
595 
596 /* Demonstration of user chunk support of the sTER and vpAg chunks */
597 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
598 
599 /* (sTER is a public chunk not yet understood by libpng. vpAg is a private
600 chunk used in ImageMagick to store "virtual page" size). */
601 
603 
604  /* 0: sTER mode + 1
605  * 1: vpAg width
606  * 2: vpAg height
607  * 3: vpAg units
608  */
609 
612 {
615 
616  /* Return one of the following: */
617  /* return (-n); chunk had an error */
618  /* return (0); did not recognize */
619  /* return (n); success */
620 
621  /* The unknown chunk structure contains the chunk data:
622  * png_byte name[5];
623  * png_byte *data;
624  * png_size_t size;
625  *
626  * Note that libpng has already taken care of the CRC handling.
627  */
628 
629  if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
630  chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
631  {
632  /* Found sTER chunk */
633  if (chunk->size != 1)
634  return (-1); /* Error return */
635  if (chunk->data[0] != 0 && chunk->data[0] != 1)
636  return (-1); /* Invalid mode */
638  user_chunk_data[0]=chunk->data[0]+1;
639  return (1);
640  }
641  if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
642  chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
643  return (0); /* Did not recognize */
644 
645  /* Found ImageMagick vpAg chunk */
646 
647  if (chunk->size != 9)
648  return (-1); /* Error return */
649 
651 
652  user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
653  user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
654  user_chunk_data[3]=(png_uint_32)chunk->data[8];
655 
656  return (1);
657 
658 }
659 #endif
660 /* END of code to demonstrate user chunk support */
661 
662 /* Test one file */
663 int
665 {
666  static png_FILE_p fpin;
667  static png_FILE_p fpout; /* "static" prevents setjmp corruption */
668  png_structp read_ptr;
669  png_infop read_info_ptr, end_info_ptr;
670 #ifdef PNG_WRITE_SUPPORTED
671  png_structp write_ptr;
672  png_infop write_info_ptr;
673  png_infop write_end_info_ptr;
674 #else
675  png_structp write_ptr = NULL;
676  png_infop write_info_ptr = NULL;
677  png_infop write_end_info_ptr = NULL;
678 #endif
679  png_bytep row_buf;
680  png_uint_32 y;
682  int num_pass, pass;
683  int bit_depth, color_type;
684 #ifdef PNG_SETJMP_SUPPORTED
685 #ifdef USE_FAR_KEYWORD
686  jmp_buf jmpbuf;
687 #endif
688 #endif
689 
690 #if defined(_WIN32_WCE)
691  TCHAR path[MAX_PATH];
692 #endif
693  char inbuf[256], outbuf[256];
694 
695  row_buf = NULL;
696 
697 #if defined(_WIN32_WCE)
698  MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
699  if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
700 #else
701  if ((fpin = fopen(inname, "rb")) == NULL)
702 #endif
703  {
704  fprintf(STDERR, "Could not find input file %s\n", inname);
705  return (1);
706  }
707 
708 #if defined(_WIN32_WCE)
709  MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
710  if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL)) == INVALID_HANDLE_VALUE)
711 #else
712  if ((fpout = fopen(outname, "wb")) == NULL)
713 #endif
714  {
715  fprintf(STDERR, "Could not open output file %s\n", outname);
716  FCLOSE(fpin);
717  return (1);
718  }
719 
720  png_debug(0, "Allocating read and write structures\n");
721 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
722  read_ptr =
725  (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
726 #else
727  read_ptr =
730 #endif
731 #if defined(PNG_NO_STDIO)
732  png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
733  pngtest_warning);
734 #endif
735 
736 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
737  user_chunk_data[0] = 0;
738  user_chunk_data[1] = 0;
739  user_chunk_data[2] = 0;
740  user_chunk_data[3] = 0;
743 
744 #endif
745 #ifdef PNG_WRITE_SUPPORTED
746 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
747  write_ptr =
750  (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
751 #else
752  write_ptr =
755 #endif
756 #if defined(PNG_NO_STDIO)
757  png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
758  pngtest_warning);
759 #endif
760 #endif
761  png_debug(0, "Allocating read_info, write_info and end_info structures\n");
762  read_info_ptr = png_create_info_struct(read_ptr);
763  end_info_ptr = png_create_info_struct(read_ptr);
764 #ifdef PNG_WRITE_SUPPORTED
765  write_info_ptr = png_create_info_struct(write_ptr);
766  write_end_info_ptr = png_create_info_struct(write_ptr);
767 #endif
768 
769 #ifdef PNG_SETJMP_SUPPORTED
770  png_debug(0, "Setting jmpbuf for read struct\n");
771 #ifdef USE_FAR_KEYWORD
772  if (setjmp(jmpbuf))
773 #else
774  if (setjmp(png_jmpbuf(read_ptr)))
775 #endif
776  {
777  fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
778  png_free(read_ptr, row_buf);
779  row_buf = NULL;
780  png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
781 #ifdef PNG_WRITE_SUPPORTED
782  png_destroy_info_struct(write_ptr, &write_end_info_ptr);
783  png_destroy_write_struct(&write_ptr, &write_info_ptr);
784 #endif
785  FCLOSE(fpin);
786  FCLOSE(fpout);
787  return (1);
788  }
789 #ifdef USE_FAR_KEYWORD
790  png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
791 #endif
792 
793 #ifdef PNG_WRITE_SUPPORTED
794  png_debug(0, "Setting jmpbuf for write struct\n");
795 #ifdef USE_FAR_KEYWORD
796  if (setjmp(jmpbuf))
797 #else
798  if (setjmp(png_jmpbuf(write_ptr)))
799 #endif
800  {
801  fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
802  png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
803  png_destroy_info_struct(write_ptr, &write_end_info_ptr);
804 #ifdef PNG_WRITE_SUPPORTED
805  png_destroy_write_struct(&write_ptr, &write_info_ptr);
806 #endif
807  FCLOSE(fpin);
808  FCLOSE(fpout);
809  return (1);
810  }
811 #ifdef USE_FAR_KEYWORD
812  png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
813 #endif
814 #endif
815 #endif
816 
817  png_debug(0, "Initializing input and output streams\n");
818 #if !defined(PNG_NO_STDIO)
819  png_init_io(read_ptr, fpin);
820 # ifdef PNG_WRITE_SUPPORTED
821  png_init_io(write_ptr, fpout);
822 # endif
823 #else
824  png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
825 # ifdef PNG_WRITE_SUPPORTED
826  png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
827 # if defined(PNG_WRITE_FLUSH_SUPPORTED)
828  pngtest_flush);
829 # else
830  NULL);
831 # endif
832 # endif
833 #endif
834  if (status_dots_requested == 1)
835  {
836 #ifdef PNG_WRITE_SUPPORTED
838 #endif
840  }
841  else
842  {
843 #ifdef PNG_WRITE_SUPPORTED
845 #endif
847  }
848 
849 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
850  {
851  int i;
852  for (i = 0; i<256; i++)
853  filters_used[i] = 0;
855  }
856 #endif
857 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
858  zero_samples = 0;
860 #endif
861 
862 #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
863 # ifndef PNG_HANDLE_CHUNK_ALWAYS
864 # define PNG_HANDLE_CHUNK_ALWAYS 3
865 # endif
867  png_bytep_NULL, 0);
868 #endif
869 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
870 # ifndef PNG_HANDLE_CHUNK_IF_SAFE
871 # define PNG_HANDLE_CHUNK_IF_SAFE 2
872 # endif
874  png_bytep_NULL, 0);
875 #endif
876 
877  png_debug(0, "Reading info struct\n");
878  png_read_info(read_ptr, read_info_ptr);
879 
880  png_debug(0, "Transferring info struct\n");
881  {
882  int interlace_type, compression_type, filter_type;
883 
884  if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
885  &color_type, &interlace_type, &compression_type, &filter_type))
886  {
887  png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
889  color_type, interlace_type, compression_type, filter_type);
890 #else
892 #endif
893  }
894  }
895 #if defined(PNG_FIXED_POINT_SUPPORTED)
896 #if defined(PNG_cHRM_SUPPORTED)
897  {
899  blue_y;
900  if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
901  &red_y, &green_x, &green_y, &blue_x, &blue_y))
902  {
903  png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
905  }
906  }
907 #endif
908 #if defined(PNG_gAMA_SUPPORTED)
909  {
910  png_fixed_point gamma;
911 
912  if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
913  {
914  png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
915  }
916  }
917 #endif
918 #else /* Use floating point versions */
919 #if defined(PNG_FLOATING_POINT_SUPPORTED)
920 #if defined(PNG_cHRM_SUPPORTED)
921  {
923  blue_y;
924  if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
925  &red_y, &green_x, &green_y, &blue_x, &blue_y))
926  {
927  png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
929  }
930  }
931 #endif
932 #if defined(PNG_gAMA_SUPPORTED)
933  {
934  double gamma;
935 
936  if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
937  {
938  png_set_gAMA(write_ptr, write_info_ptr, gamma);
939  }
940  }
941 #endif
942 #endif /* floating point */
943 #endif /* fixed point */
944 #if defined(PNG_iCCP_SUPPORTED)
945  {
946  png_charp name;
949  int compression_type;
950 
951  if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
952  &profile, &proflen))
953  {
954  png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
955  profile, proflen);
956  }
957  }
958 #endif
959 #if defined(PNG_sRGB_SUPPORTED)
960  {
961  int intent;
962 
963  if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
964  {
965  png_set_sRGB(write_ptr, write_info_ptr, intent);
966  }
967  }
968 #endif
969  {
971  int num_palette;
972 
973  if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
974  {
975  png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
976  }
977  }
978 #if defined(PNG_bKGD_SUPPORTED)
979  {
981 
982  if (png_get_bKGD(read_ptr, read_info_ptr, &background))
983  {
984  png_set_bKGD(write_ptr, write_info_ptr, background);
985  }
986  }
987 #endif
988 #if defined(PNG_hIST_SUPPORTED)
989  {
991 
992  if (png_get_hIST(read_ptr, read_info_ptr, &hist))
993  {
994  png_set_hIST(write_ptr, write_info_ptr, hist);
995  }
996  }
997 #endif
998 #if defined(PNG_oFFs_SUPPORTED)
999  {
1001  int unit_type;
1002 
1003  if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
1004  &unit_type))
1005  {
1006  png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
1007  }
1008  }
1009 #endif
1010 #if defined(PNG_pCAL_SUPPORTED)
1011  {
1014  png_int_32 X0, X1;
1015  int type, nparams;
1016 
1017  if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
1018  &nparams, &units, &params))
1019  {
1020  png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
1021  nparams, units, params);
1022  }
1023  }
1024 #endif
1025 #if defined(PNG_pHYs_SUPPORTED)
1026  {
1028  int unit_type;
1029 
1030  if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
1031  {
1032  png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
1033  }
1034  }
1035 #endif
1036 #if defined(PNG_sBIT_SUPPORTED)
1037  {
1039 
1040  if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
1041  {
1042  png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
1043  }
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  {
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\n", 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  {
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 */
1097  png_convert_to_rfc1123(read_ptr, mod_time),
1099  tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1101 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1102  }
1103  }
1104 #endif
1105 #if defined(PNG_tRNS_SUPPORTED)
1106  {
1107  png_bytep trans;
1108  int num_trans;
1110 
1111  if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
1112  &trans_values))
1113  {
1114  int sample_max = (1 << read_info_ptr->bit_depth);
1115  /* libpng doesn't reject a tRNS chunk with out-of-range samples */
1116  if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
1117  (int)trans_values->gray > sample_max) ||
1118  (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
1119  ((int)trans_values->red > sample_max ||
1120  (int)trans_values->green > sample_max ||
1121  (int)trans_values->blue > sample_max))))
1122  png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
1123  trans_values);
1124  }
1125  }
1126 #endif
1127 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1128  {
1130  int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
1131  &unknowns);
1132  if (num_unknowns)
1133  {
1134  png_size_t i;
1135  png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
1136  num_unknowns);
1137  /* copy the locations from the read_info_ptr. The automatically
1138  generated locations in write_info_ptr are wrong because we
1139  haven't written anything yet */
1140  for (i = 0; i < (png_size_t)num_unknowns; i++)
1141  png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
1142  unknowns[i].location);
1143  }
1144  }
1145 #endif
1146 
1147 #ifdef PNG_WRITE_SUPPORTED
1148  png_debug(0, "\nWriting info struct\n");
1149 
1150 /* If we wanted, we could write info in two steps:
1151  png_write_info_before_PLTE(write_ptr, write_info_ptr);
1152  */
1153  png_write_info(write_ptr, write_info_ptr);
1154 
1155 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
1156  if (user_chunk_data[0] != 0)
1157  {
1158  png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
1159 
1160  unsigned char
1161  ster_chunk_data[1];
1162 
1163  if (verbose)
1164  fprintf(STDERR, "stereo mode = %lu\n",
1165  (unsigned long)(user_chunk_data[0] - 1));
1166  ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
1167  png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
1168  }
1169  if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
1170  {
1171  png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
1172 
1173  unsigned char
1174  vpag_chunk_data[9];
1175 
1176  if (verbose)
1177  fprintf(STDERR, "vpAg = %lu x %lu, units=%lu\n",
1178  (unsigned long)user_chunk_data[1],
1179  (unsigned long)user_chunk_data[2],
1180  (unsigned long)user_chunk_data[3]);
1181  png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
1182  png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
1183  vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
1184  png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
1185  }
1186 
1187 #endif
1188 #endif
1189 
1190 #ifdef SINGLE_ROWBUF_ALLOC
1191  png_debug(0, "\nAllocating row buffer...");
1192  row_buf = (png_bytep)png_malloc(read_ptr,
1193  png_get_rowbytes(read_ptr, read_info_ptr));
1194  png_debug1(0, "0x%08lx\n\n", (unsigned long)row_buf);
1195 #endif /* SINGLE_ROWBUF_ALLOC */
1196  png_debug(0, "Writing row data\n");
1197 
1198 #if defined(PNG_READ_INTERLACING_SUPPORTED) || \
1199  defined(PNG_WRITE_INTERLACING_SUPPORTED)
1200  num_pass = png_set_interlace_handling(read_ptr);
1201 # ifdef PNG_WRITE_SUPPORTED
1202  png_set_interlace_handling(write_ptr);
1203 # endif
1204 #else
1205  num_pass = 1;
1206 #endif
1207 
1208 #ifdef PNGTEST_TIMING
1209  t_stop = (float)clock();
1210  t_misc += (t_stop - t_start);
1211  t_start = t_stop;
1212 #endif
1213  for (pass = 0; pass < num_pass; pass++)
1214  {
1215  png_debug1(0, "Writing row data for pass %d\n", pass);
1216  for (y = 0; y < height; y++)
1217  {
1218 #ifndef SINGLE_ROWBUF_ALLOC
1219  png_debug2(0, "\nAllocating row buffer (pass %d, y = %ld)...", pass, y);
1220  row_buf = (png_bytep)png_malloc(read_ptr,
1221  png_get_rowbytes(read_ptr, read_info_ptr));
1222  png_debug2(0, "0x%08lx (%ld bytes)\n", (unsigned long)row_buf,
1223  png_get_rowbytes(read_ptr, read_info_ptr));
1224 #endif /* !SINGLE_ROWBUF_ALLOC */
1225  png_read_rows(read_ptr, (png_bytepp)&row_buf, png_bytepp_NULL, 1);
1226 
1227 #ifdef PNG_WRITE_SUPPORTED
1228 #ifdef PNGTEST_TIMING
1229  t_stop = (float)clock();
1230  t_decode += (t_stop - t_start);
1231  t_start = t_stop;
1232 #endif
1233  png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
1234 #ifdef PNGTEST_TIMING
1235  t_stop = (float)clock();
1236  t_encode += (t_stop - t_start);
1237  t_start = t_stop;
1238 #endif
1239 #endif /* PNG_WRITE_SUPPORTED */
1240 
1241 #ifndef SINGLE_ROWBUF_ALLOC
1242  png_debug2(0, "Freeing row buffer (pass %d, y = %ld)\n\n", pass, y);
1243  png_free(read_ptr, row_buf);
1244  row_buf = NULL;
1245 #endif /* !SINGLE_ROWBUF_ALLOC */
1246  }
1247  }
1248 
1249 #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
1250  png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
1251 #endif
1252 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1253  png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
1254 #endif
1255 
1256  png_debug(0, "Reading and writing end_info data\n");
1257 
1258  png_read_end(read_ptr, end_info_ptr);
1259 #if defined(PNG_TEXT_SUPPORTED)
1260  {
1262  int num_text;
1263 
1264  if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
1265  {
1266  png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks\n", num_text);
1267  png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
1268  }
1269  }
1270 #endif
1271 #if defined(PNG_tIME_SUPPORTED)
1272  {
1274 
1275  if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
1276  {
1277  png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
1278 #if defined(PNG_TIME_RFC1123_SUPPORTED)
1279  /* we have to use png_memcpy instead of "=" because the string
1280  pointed to by png_convert_to_rfc1123() gets free'ed before
1281  we use it */
1283  png_convert_to_rfc1123(read_ptr, mod_time),
1285  tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1287 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1288  }
1289  }
1290 #endif
1291 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1292  {
1294  int num_unknowns;
1295  num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
1296  &unknowns);
1297  if (num_unknowns)
1298  {
1299  png_size_t i;
1300  png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
1301  num_unknowns);
1302  /* copy the locations from the read_info_ptr. The automatically
1303  generated locations in write_end_info_ptr are wrong because we
1304  haven't written the end_info yet */
1305  for (i = 0; i < (png_size_t)num_unknowns; i++)
1306  png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
1307  unknowns[i].location);
1308  }
1309  }
1310 #endif
1311 #ifdef PNG_WRITE_SUPPORTED
1312  png_write_end(write_ptr, write_end_info_ptr);
1313 #endif
1314 
1315 #ifdef PNG_EASY_ACCESS_SUPPORTED
1316  if (verbose)
1317  {
1318  png_uint_32 iwidth, iheight;
1319  iwidth = png_get_image_width(write_ptr, write_info_ptr);
1320  iheight = png_get_image_height(write_ptr, write_info_ptr);
1321  fprintf(STDERR, "Image width = %lu, height = %lu\n",
1322  (unsigned long)iwidth, (unsigned long)iheight);
1323  }
1324 #endif
1325 
1326  png_debug(0, "Destroying data structs\n");
1327 #ifdef SINGLE_ROWBUF_ALLOC
1328  png_debug(1, "destroying row_buf for read_ptr\n");
1329  png_free(read_ptr, row_buf);
1330  row_buf = NULL;
1331 #endif /* SINGLE_ROWBUF_ALLOC */
1332  png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr\n");
1333  png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
1334 #ifdef PNG_WRITE_SUPPORTED
1335  png_debug(1, "destroying write_end_info_ptr\n");
1336  png_destroy_info_struct(write_ptr, &write_end_info_ptr);
1337  png_debug(1, "destroying write_ptr, write_info_ptr\n");
1338  png_destroy_write_struct(&write_ptr, &write_info_ptr);
1339 #endif
1340  png_debug(0, "Destruction complete.\n");
1341 
1342  FCLOSE(fpin);
1343  FCLOSE(fpout);
1344 
1345  png_debug(0, "Opening files for comparison\n");
1346 #if defined(_WIN32_WCE)
1347  MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
1348  if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
1349 #else
1350  if ((fpin = fopen(inname, "rb")) == NULL)
1351 #endif
1352  {
1353  fprintf(STDERR, "Could not find file %s\n", inname);
1354  return (1);
1355  }
1356 
1357 #if defined(_WIN32_WCE)
1358  MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
1359  if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
1360 #else
1361  if ((fpout = fopen(outname, "rb")) == NULL)
1362 #endif
1363  {
1364  fprintf(STDERR, "Could not find file %s\n", outname);
1365  FCLOSE(fpin);
1366  return (1);
1367  }
1368 
1369  for (;;)
1370  {
1371  png_size_t num_in, num_out;
1372 
1373  READFILE(fpin, inbuf, 1, num_in);
1374  READFILE(fpout, outbuf, 1, num_out);
1375 
1376  if (num_in != num_out)
1377  {
1378  fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
1379  inname, outname);
1380  if (wrote_question == 0)
1381  {
1382  fprintf(STDERR,
1383  " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1385  fprintf(STDERR,
1386  "\n filtering heuristic (libpng default), compression");
1387  fprintf(STDERR,
1388  " level (zlib default),\n and zlib version (%s)?\n\n",
1389  ZLIB_VERSION);
1390  wrote_question = 1;
1391  }
1392  FCLOSE(fpin);
1393  FCLOSE(fpout);
1394  return (0);
1395  }
1396 
1397  if (!num_in)
1398  break;
1399 
1400  if (png_memcmp(inbuf, outbuf, num_in))
1401  {
1402  fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
1403  if (wrote_question == 0)
1404  {
1405  fprintf(STDERR,
1406  " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1408  fprintf(STDERR,
1409  "\n filtering heuristic (libpng default), compression");
1410  fprintf(STDERR,
1411  " level (zlib default),\n and zlib version (%s)?\n\n",
1412  ZLIB_VERSION);
1413  wrote_question = 1;
1414  }
1415  FCLOSE(fpin);
1416  FCLOSE(fpout);
1417  return (0);
1418  }
1419  }
1420 
1421  FCLOSE(fpin);
1422  FCLOSE(fpout);
1423 
1424  return (0);
1425 }
1426 
1427 /* input and output filenames */
1428 #ifdef RISCOS
1429 static PNG_CONST char *inname = "pngtest/png";
1430 static PNG_CONST char *outname = "pngout/png";
1431 #else
1432 static PNG_CONST char *inname = "pngtest.png";
1433 static PNG_CONST char *outname = "pngout.png";
1434 #endif
1435 
1436 int
1437 main(int argc, char *argv[])
1438 {
1439  int multiple = 0;
1440  int ierror = 0;
1441 
1442  fprintf(STDERR, "Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
1443  fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
1444  fprintf(STDERR, "%s", png_get_copyright(NULL));
1445  /* Show the version of libpng used in building the library */
1446  fprintf(STDERR, " library (%lu):%s",
1447  (unsigned long)png_access_version_number(),
1448  png_get_header_version(NULL));
1449  /* Show the version of libpng used in building the application */
1450  fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
1452  fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
1453  (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
1454 
1455  /* Do some consistency checking on the memory allocation settings, I'm
1456  not sure this matters, but it is nice to know, the first of these
1457  tests should be impossible because of the way the macros are set
1458  in pngconf.h */
1459 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
1460  fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
1461 #endif
1462  /* I think the following can happen. */
1463 #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
1464  fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
1465 #endif
1466 
1468  {
1469  fprintf(STDERR,
1470  "Warning: versions are different between png.h and png.c\n");
1471  fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
1472  fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
1473  ++ierror;
1474  }
1475 
1476  if (argc > 1)
1477  {
1478  if (strcmp(argv[1], "-m") == 0)
1479  {
1480  multiple = 1;
1482  }
1483  else if (strcmp(argv[1], "-mv") == 0 ||
1484  strcmp(argv[1], "-vm") == 0 )
1485  {
1486  multiple = 1;
1487  verbose = 1;
1489  }
1490  else if (strcmp(argv[1], "-v") == 0)
1491  {
1492  verbose = 1;
1494  inname = argv[2];
1495  }
1496  else
1497  {
1498  inname = argv[1];
1500  }
1501  }
1502 
1503  if (!multiple && argc == 3 + verbose)
1504  outname = argv[2 + verbose];
1505 
1506  if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
1507  {
1508  fprintf(STDERR,
1509  "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
1510  argv[0], argv[0]);
1511  fprintf(STDERR,
1512  " reads/writes one PNG file (without -m) or multiple files (-m)\n");
1513  fprintf(STDERR,
1514  " with -m %s is used as a temporary file\n", outname);
1515  exit(1);
1516  }
1517 
1518  if (multiple)
1519  {
1520  int i;
1521 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1522  int allocation_now = current_allocation;
1523 #endif
1524  for (i=2; i<argc; ++i)
1525  {
1526 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1527  int k;
1528 #endif
1529  int kerror;
1530  fprintf(STDERR, "Testing %s:", argv[i]);
1531  kerror = test_one_file(argv[i], outname);
1532  if (kerror == 0)
1533  {
1534 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
1535  fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1536  (unsigned long)zero_samples);
1537 #else
1538  fprintf(STDERR, " PASS\n");
1539 #endif
1540 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1541  for (k = 0; k<256; k++)
1542  if (filters_used[k])
1543  fprintf(STDERR, " Filter %d was used %lu times\n",
1544  k, (unsigned long)filters_used[k]);
1545 #endif
1546 #if defined(PNG_TIME_RFC1123_SUPPORTED)
1547  if (tIME_chunk_present != 0)
1548  fprintf(STDERR, " tIME = %s\n", tIME_string);
1549  tIME_chunk_present = 0;
1550 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1551  }
1552  else
1553  {
1554  fprintf(STDERR, " FAIL\n");
1555  ierror += kerror;
1556  }
1557 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1558  if (allocation_now != current_allocation)
1559  fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1560  current_allocation - allocation_now);
1561  if (current_allocation != 0)
1562  {
1563  memory_infop pinfo = pinformation;
1564 
1565  fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1566  current_allocation);
1567  while (pinfo != NULL)
1568  {
1569  fprintf(STDERR, " %lu bytes at %x\n",
1570  (unsigned long)pinfo->size,
1571  (unsigned int) pinfo->pointer);
1572  pinfo = pinfo->next;
1573  }
1574  }
1575 #endif
1576  }
1577 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1578  fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1579  current_allocation);
1580  fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1581  maximum_allocation);
1582  fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1583  total_allocation);
1584  fprintf(STDERR, " Number of allocations: %10d\n",
1585  num_allocations);
1586 #endif
1587  }
1588  else
1589  {
1590  int i;
1591  for (i = 0; i<3; ++i)
1592  {
1593  int kerror;
1594 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1595  int allocation_now = current_allocation;
1596 #endif
1597  if (i == 1) status_dots_requested = 1;
1598  else if (verbose == 0)status_dots_requested = 0;
1599  if (i == 0 || verbose == 1 || ierror != 0)
1600  fprintf(STDERR, "Testing %s:", inname);
1601  kerror = test_one_file(inname, outname);
1602  if (kerror == 0)
1603  {
1604  if (verbose == 1 || i == 2)
1605  {
1606 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1607  int k;
1608 #endif
1609 #if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
1610  fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1611  (unsigned long)zero_samples);
1612 #else
1613  fprintf(STDERR, " PASS\n");
1614 #endif
1615 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1616  for (k = 0; k<256; k++)
1617  if (filters_used[k])
1618  fprintf(STDERR, " Filter %d was used %lu times\n",
1619  k,
1620  (unsigned long)filters_used[k]);
1621 #endif
1622 #if defined(PNG_TIME_RFC1123_SUPPORTED)
1623  if (tIME_chunk_present != 0)
1624  fprintf(STDERR, " tIME = %s\n", tIME_string);
1625 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1626  }
1627  }
1628  else
1629  {
1630  if (verbose == 0 && i != 2)
1631  fprintf(STDERR, "Testing %s:", inname);
1632  fprintf(STDERR, " FAIL\n");
1633  ierror += kerror;
1634  }
1635 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1636  if (allocation_now != current_allocation)
1637  fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1638  current_allocation - allocation_now);
1639  if (current_allocation != 0)
1640  {
1641  memory_infop pinfo = pinformation;
1642 
1643  fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1644  current_allocation);
1645  while (pinfo != NULL)
1646  {
1647  fprintf(STDERR, " %lu bytes at %x\n",
1648  (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
1649  pinfo = pinfo->next;
1650  }
1651  }
1652 #endif
1653  }
1654 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1655  fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1656  current_allocation);
1657  fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1658  maximum_allocation);
1659  fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1660  total_allocation);
1661  fprintf(STDERR, " Number of allocations: %10d\n",
1662  num_allocations);
1663 #endif
1664  }
1665 
1666 #ifdef PNGTEST_TIMING
1667  t_stop = (float)clock();
1668  t_misc += (t_stop - t_start);
1669  t_start = t_stop;
1670  fprintf(STDERR, " CPU time used = %.3f seconds",
1671  (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
1672  fprintf(STDERR, " (decoding %.3f,\n",
1673  t_decode/(float)CLOCKS_PER_SEC);
1674  fprintf(STDERR, " encoding %.3f ,",
1675  t_encode/(float)CLOCKS_PER_SEC);
1676  fprintf(STDERR, " other %.3f seconds)\n\n",
1677  t_misc/(float)CLOCKS_PER_SEC);
1678 #endif
1679 
1680  if (ierror == 0)
1681  fprintf(STDERR, "libpng passes test\n");
1682  else
1683  fprintf(STDERR, "libpng FAILS test\n");
1684  return (int)(ierror != 0);
1685 }
1686 
1687 /* Generate a compiler error if there is an old png.h in the search path. */
png_get_sRGB
png_uint_32 PNGAPI png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
Definition: pngget.c:473
read_row_callback
void read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
Definition: pngtest.c:126
png_set_text
void PNGAPI png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, int num_text)
Definition: pngset.c:731
png_get_text
png_uint_32 PNGAPI png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr, int *num_text)
Definition: pngget.c:725
png_sizeof
#define png_sizeof(x)
Definition: pngconf.h:1127
png_debug
#define png_debug(l, m)
Definition: png.h:2553
png_set_cHRM_fixed
void PNGAPI png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x, png_fixed_point blue_y)
Definition: pngset.c:92
png_infop
png_info FAR * png_infop
Definition: png.h:981
res_y
png_infop png_uint_32 png_uint_32 * res_y
Definition: png.h:2341
CVT_PTR
#define CVT_PTR(ptr)
Definition: pngconf.h:1438
png_get_rowbytes
png_uint_32 PNGAPI png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
Definition: pngget.c:25
size
png_uint_32 size
Definition: png.h:1518
text_ptr
png_infop png_textp * text_ptr
Definition: png.h:2404
png_set_hIST
void PNGAPI png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
Definition: pngset.c:219
png_get_copyright
png_charp PNGAPI png_get_copyright(png_structp png_ptr)
Definition: png.c:694
png_destroy_read_struct
void PNGAPI png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr)
Definition: pngread.c:1080
width
png_infop png_uint_32 * width
Definition: png.h:2306
png_set_gAMA
void PNGAPI png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
Definition: pngset.c:156
i
png_uint_32 i
Definition: png.h:2732
png_write_rows
void PNGAPI png_write_rows(png_structp png_ptr, png_bytepp row, png_uint_32 num_rows)
Definition: pngwrite.c:710
png_set_interlace_handling
int PNGAPI png_set_interlace_handling(png_structp png_ptr)
Definition: pngtrans.c:79
proflen
png_infop png_charpp int png_charpp png_uint_32 * proflen
Definition: png.h:2380
blue_y
png_infop double double double double double double double double * blue_y
Definition: png.h:2251
png_convert_to_rfc1123
png_charp PNGAPI png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
Definition: png.c:646
png_set_write_status_fn
void PNGAPI png_set_write_status_fn(png_structp png_ptr, png_write_status_ptr write_row_fn)
Definition: pngwrite.c:1442
png_voidp_NULL
#define png_voidp_NULL
Definition: png.h:510
png_get_hIST
png_uint_32 PNGAPI png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
Definition: pngget.c:524
png_debug2
#define png_debug2(l, m, p1, p2)
Definition: png.h:2559
tIME_chunk_present
static int tIME_chunk_present
Definition: pngtest.c:86
png_error_ptr_NULL
#define png_error_ptr_NULL
Definition: png.h:501
png_set_unknown_chunk_location
void PNGAPI png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, int chunk, int location)
Definition: pngset.c:1109
PNG_HANDLE_CHUNK_IF_SAFE
#define PNG_HANDLE_CHUNK_IF_SAFE
Definition: png.h:2575
png_destroy_info_struct
void PNGAPI png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
Definition: png.c:263
png_get_pHYs
png_uint_32 PNGAPI png_get_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
Definition: pngget.c:663
location
png_infop int int location
Definition: png.h:2484
png_read_status_ptr_NULL
#define png_read_status_ptr_NULL
Definition: png.h:506
png_set_read_fn
void PNGAPI png_set_read_fn(png_structp png_ptr, png_voidp io_ptr, png_rw_ptr read_data_fn)
Definition: pngrio.c:137
num_text
png_infop png_textp int * num_text
Definition: png.h:2404
PNG_UINT_31_MAX
#define PNG_UINT_31_MAX
Definition: png.h:985
inname
static PNG_CONST char * inname
Definition: pngtest.c:1432
png_get_bKGD
png_uint_32 PNGAPI png_get_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p *background)
Definition: pngget.c:361
png_set_sRGB
void PNGAPI png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
Definition: pngset.c:601
png_bytep
png_byte FAR * png_bytep
Definition: pngconf.h:1195
PNG_WRITE_FLUSH_SUPPORTED
#define PNG_WRITE_FLUSH_SUPPORTED
Definition: pngconf.h:683
png_memcmp
#define png_memcmp
Definition: pngconf.h:1462
png_get_image_width
png_uint_32 PNGAPI png_get_image_width(png_structp png_ptr, png_infop info_ptr)
Definition: pngget.c:47
unit_type
png_infop png_int_32 png_int_32 int * unit_type
Definition: png.h:2318
png_get_uint_31
png_uint_32 PNGAPI png_get_uint_31(png_structp png_ptr, png_bytep buf)
Definition: pngrutil.c:49
png_color_16p
png_color_16 FAR * png_color_16p
Definition: png.h:579
png_create_write_struct_2
png_structp PNGAPI png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn)
Definition: pngwrite.c:449
png_color_8p
png_color_8 FAR * png_color_8p
Definition: png.h:590
PNG_INTERLACE_NONE
#define PNG_INTERLACE_NONE
Definition: png.h:1019
io_ptr
png_voidp io_ptr
Definition: png.h:1971
PNG_LIBPNG_VER
#define PNG_LIBPNG_VER
Definition: png.h:448
unknowns
png_infop png_unknown_chunkp unknowns
Definition: png.h:2482
png_memset
#define png_memset
Definition: pngconf.h:1464
png_set_error_fn
void PNGAPI png_set_error_fn(png_structp png_ptr, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn)
Definition: pngerror.c:310
autoplay.n
n
Definition: autoplay.py:12
png_charp
char FAR * png_charp
Definition: pngconf.h:1201
params
png_infop png_charp png_int_32 png_int_32 int int png_charp png_charpp * params
Definition: png.h:2330
png_get_tRNS
png_uint_32 PNGAPI png_get_tRNS(png_structp png_ptr, png_infop info_ptr, png_bytep *trans, int *num_trans, png_color_16p *trans_values)
Definition: pngget.c:762
png_set_iCCP
void PNGAPI png_set_iCCP(png_structp png_ptr, png_infop info_ptr, png_charp name, int compression_type, png_charp profile, png_uint_32 proflen)
Definition: pngset.c:684
status_pass
static int status_pass
Definition: pngtest.c:113
png_unknown_chunkp
png_unknown_chunk FAR * png_unknown_chunkp
Definition: png.h:700
CVT_PTR_NOCHECK
#define CVT_PTR_NOCHECK(ptr)
Definition: pngconf.h:1439
swingTest.f
f
Definition: swingTest.py:6
status_dots_requested
static int status_dots_requested
Definition: pngtest.c:114
png_free_data
void PNGAPI png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, int num)
Definition: png.c:339
png_colorp
png_color FAR * png_colorp
Definition: png.h:568
png_set_IHDR
void PNGAPI png_set_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth, int color_type, int interlace_type, int compression_type, int filter_type)
Definition: pngset.c:261
png_int_32
long png_int_32
Definition: pngconf.h:1115
png_set_bKGD
void PNGAPI png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
Definition: pngset.c:22
png_malloc
png_voidp PNGAPI png_malloc(png_structp png_ptr, png_uint_32 size)
Definition: pngmem.c:429
palette
png_colorp palette
Definition: png.h:1634
unit
png_infop int * unit
Definition: png.h:2448
user_chunk_data
static png_uint_32 user_chunk_data[4]
Definition: pngtest.c:602
zero_samples
static png_uint_32 zero_samples
Definition: pngtest.c:185
bit_depth
png_infop png_uint_32 png_uint_32 int * bit_depth
Definition: png.h:2307
png_const_charp
PNG_CONST char FAR * png_const_charp
Definition: pngconf.h:1200
type
png_infop png_charp png_int_32 png_int_32 int * type
Definition: png.h:2330
png_destroy_write_struct
void PNGAPI png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
Definition: pngwrite.c:1004
png_create_info_struct
png_infop PNGAPI png_create_info_struct(png_structp png_ptr)
Definition: png.c:239
count_zero_samples
void count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
Definition: pngtest.c:196
X1
png_infop png_charp png_int_32 png_int_32 * X1
Definition: png.h:2329
png_read_rows
void PNGAPI png_read_rows(png_structp png_ptr, png_bytepp row, png_bytepp display_row, png_uint_32 num_rows)
Definition: pngread.c:818
main
int main(int argc, char *argv[])
Definition: pngtest.c:1437
png_info_struct
Definition: png.h:743
png_libpng_ver
PNG_CONST char png_libpng_ver[18]
Definition: png.c:23
png_bytepp
png_byte FAR *FAR * png_bytepp
Definition: pngconf.h:1217
PNG_COLOR_TYPE_RGB
#define PNG_COLOR_TYPE_RGB
Definition: png.h:1002
png_read_end
void PNGAPI png_read_end(png_structp png_ptr, png_infop info_ptr)
Definition: pngread.c:908
ZLIB_VERSION
#define ZLIB_VERSION
Definition: zlib.h:40
png_create_write_struct
png_structp PNGAPI png_create_write_struct(png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn)
Definition: pngwrite.c:439
status_dots
static int status_dots
Definition: pngtest.c:115
png_set_read_user_transform_fn
void PNGAPI png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr read_user_transform_fn)
Definition: pngrtran.c:697
MIN
#define MIN(a, b)
Returns the min value between a and b.
Definition: IceTypes.h:146
PNG_ZBUF_SIZE
#define PNG_ZBUF_SIZE
Definition: pngconf.h:100
profile
png_infop png_charpp int png_charpp profile
Definition: png.h:2380
PNG_CONST
#define PNG_CONST
Definition: pngconf.h:445
png_set_unknown_chunks
void PNGAPI png_set_unknown_chunks(png_structp png_ptr, png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
Definition: pngset.c:1048
PNG_WRITE_INTERLACING_SUPPORTED
#define PNG_WRITE_INTERLACING_SUPPORTED
Definition: pngconf.h:673
PNGAPI
#define PNGAPI
Definition: pngconf.h:1384
white_y
png_infop double double * white_y
Definition: png.h:2249
png_timep
png_time FAR * png_timep
Definition: png.h:680
compression_type
png_infop png_charpp int * compression_type
Definition: png.h:2379
png_byte
unsigned char png_byte
Definition: pngconf.h:1118
png_get_gAMA_fixed
png_uint_32 PNGAPI png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point *int_file_gamma)
Definition: pngget.c:456
png_get_oFFs
png_uint_32 PNGAPI png_get_oFFs(png_structp png_ptr, png_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
Definition: pngget.c:585
png_get_sCAL
png_uint_32 PNGAPI png_get_sCAL(png_structp png_ptr, png_infop info_ptr, int *unit, double *width, double *height)
Definition: pngget.c:628
png_set_PLTE
void PNGAPI png_set_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp palette, int num_palette)
Definition: pngset.c:537
png_get_iCCP
png_uint_32 PNGAPI png_get_iCCP(png_structp png_ptr, png_infop info_ptr, png_charpp name, int *compression_type, png_charpp profile, png_uint_32 *proflen)
Definition: pngget.c:488
png_set_pCAL
void PNGAPI png_set_pCAL(png_structp png_ptr, png_infop info_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, png_charp units, png_charpp params)
Definition: pngset.c:386
green_x
png_infop double double double double double * green_x
Definition: png.h:2250
units
png_infop png_charp png_int_32 png_int_32 int int png_charp * units
Definition: png.h:2330
int
typedef int
Definition: png.h:1111
PNG_COLOR_TYPE_GRAY
#define PNG_COLOR_TYPE_GRAY
Definition: png.h:1000
PNG_HANDLE_CHUNK_ALWAYS
#define PNG_HANDLE_CHUNK_ALWAYS
Definition: png.h:2576
png_set_oFFs
void PNGAPI png_set_oFFs(png_structp png_ptr, png_infop info_ptr, png_int_32 offset_x, png_int_32 offset_y, int unit_type)
Definition: pngset.c:370
png_set_read_user_chunk_fn
void PNGAPI png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn)
Definition: pngset.c:1198
png_read_info
void PNGAPI png_read_info(png_structp png_ptr, png_infop info_ptr)
Definition: pngread.c:327
png_set_mem_fn
void PNGAPI png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn)
Definition: pngmem.c:587
png_get_cHRM_fixed
png_uint_32 PNGAPI png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x, png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y, png_fixed_point *blue_x, png_fixed_point *blue_y)
Definition: pngget.c:408
png_set_pHYs
void PNGAPI png_set_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type)
Definition: pngset.c:522
png_set_sCAL
void PNGAPI png_set_sCAL(png_structp png_ptr, png_infop info_ptr, int unit, double width, double height)
Definition: pngset.c:459
count_filters
void count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
Definition: pngtest.c:174
png_set_sBIT
void PNGAPI png_set_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p sig_bit)
Definition: pngset.c:587
png_get_unknown_chunks
png_uint_32 PNGAPI png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr, png_unknown_chunkpp unknowns)
Definition: pngget.c:801
png_bytep_NULL
#define png_bytep_NULL
Definition: png.h:498
filters_used
static png_uint_32 filters_used[256]
Definition: pngtest.c:164
res_x
png_infop png_uint_32 * res_x
Definition: png.h:2341
png_memcpy
#define png_memcpy
Definition: pngconf.h:1463
png_jmpbuf
#define png_jmpbuf(png_ptr)
Definition: pngconf.h:1420
purpose
png_infop png_charp * purpose
Definition: png.h:2329
png_structp
png_struct FAR * png_structp
Definition: png.h:1105
version_1_2_32
png_structp version_1_2_32
Definition: png.h:1469
png_free_default
void PNGAPI png_free_default(png_structp png_ptr, png_voidp ptr)
Definition: pngmem.c:512
name
png_infop png_charpp name
Definition: png.h:2379
trans
png_infop png_bytep * trans
Definition: png.h:2432
buf
png_bytep buf
Definition: png.h:2726
png_uint_16p
png_uint_16 FAR * png_uint_16p
Definition: pngconf.h:1198
png_set_tRNS
void PNGAPI png_set_tRNS(png_structp png_ptr, png_infop info_ptr, png_bytep trans, int num_trans, png_color_16p trans_values)
Definition: pngset.c:918
png_set_write_user_transform_fn
void PNGAPI png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr write_user_transform_fn)
Definition: pngwrite.c:1451
FCLOSE
#define FCLOSE(file)
Definition: pngtest.c:51
nparams
png_infop png_charp png_int_32 png_int_32 int int * nparams
Definition: png.h:2330
png_init_io
void PNGAPI png_init_io(png_structp png_ptr, png_FILE_p fp)
Definition: png.c:633
png_debug1
#define png_debug1(l, m, p1)
Definition: png.h:2556
png_write_status_ptr_NULL
#define png_write_status_ptr_NULL
Definition: png.h:511
data
JSAMPIMAGE data
Definition: jpeglib.h:945
READFILE
#define READFILE(file, data, length, check)
Definition: pngtest.c:47
png_set_cHRM
void PNGAPI png_set_cHRM(png_structp png_ptr, png_infop info_ptr, double white_x, double white_y, double red_x, double red_y, double green_x, double green_y, double blue_x, double blue_y)
Definition: pngset.c:36
STDERR
#define STDERR
Definition: pngtest.c:100
blue_x
png_infop double double double double double double double * blue_x
Definition: png.h:2250
test_one_file
int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
Definition: pngtest.c:664
png_get_IHDR
png_uint_32 PNGAPI png_get_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 *width, png_uint_32 *height, int *bit_depth, int *color_type, int *interlace_type, int *compression_type, int *filter_type)
Definition: pngget.c:538
png_struct_def
Definition: png.h:1166
png_get_image_height
png_uint_32 PNGAPI png_get_image_height(png_structp png_ptr, png_infop info_ptr)
Definition: pngget.c:57
png_get_header_version
png_charp PNGAPI png_get_header_version(png_structp png_ptr)
Definition: png.c:728
chunk
png_infop int chunk
Definition: png.h:2484
X0
png_infop png_charp png_int_32 * X0
Definition: png.h:2329
png_create_read_struct
png_structp PNGAPI png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn)
Definition: pngread.c:20
png_get_PLTE
png_uint_32 PNGAPI png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette, int *num_palette)
Definition: pngget.c:693
png_get_tIME
png_uint_32 PNGAPI png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
Definition: pngget.c:747
offset_y
png_infop png_int_32 png_int_32 * offset_y
Definition: png.h:2317
PNG_LIBPNG_VER_STRING
#define PNG_LIBPNG_VER_STRING
Definition: png.h:413
your_png_h_is_not_version_1_2_32
version_1_2_32 your_png_h_is_not_version_1_2_32
Definition: pngtest.c:1688
ptr
png_voidp ptr
Definition: png.h:2060
png_set_gAMA_fixed
void PNGAPI png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point int_gamma)
Definition: pngset.c:181
background
png_infop png_color_16p * background
Definition: png.h:2238
png_size_t
size_t png_size_t
Definition: pngconf.h:1126
png_bytepp_NULL
#define png_bytepp_NULL
Definition: png.h:499
verbose
static int verbose
Definition: pngtest.c:90
intent
png_infop int * intent
Definition: png.h:2367
offset_x
png_infop png_int_32 * offset_x
Definition: png.h:2317
outname
static PNG_CONST char * outname
Definition: pngtest.c:1433
sig_bit
png_infop png_color_8p * sig_bit
Definition: png.h:2357
red_y
png_infop double double double double * red_y
Definition: png.h:2250
png_save_uint_32
void PNGAPI png_save_uint_32(png_bytep buf, png_uint_32 i)
Definition: pngwutil.c:20
png_uint_32
unsigned long png_uint_32
Definition: pngconf.h:1114
png_voidp
void FAR * png_voidp
Definition: pngconf.h:1194
png_set_keep_unknown_chunks
void PNGAPI png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep chunk_list, int num_chunks)
Definition: pngset.c:1151
height
png_infop png_uint_32 png_uint_32 * height
Definition: png.h:2306
num_trans
png_infop png_bytep int * num_trans
Definition: png.h:2432
png_access_version_number
png_uint_32 PNGAPI png_access_version_number(void)
Definition: png.c:768
png_write_chunk
void PNGAPI png_write_chunk(png_structp png_ptr, png_bytep chunk_name, png_bytep data, png_size_t length)
Definition: pngwutil.c:80
png_get_pCAL
png_uint_32 PNGAPI png_get_pCAL(png_structp png_ptr, png_infop info_ptr, png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams, png_charp *units, png_charpp *params)
Definition: pngget.c:603
png_create_read_struct_2
png_structp PNGAPI png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn)
Definition: pngread.c:31
FAR
#define FAR
Definition: jmorecfg.h:215
PNGARG
int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname))
png_fixed_point
png_int_32 png_fixed_point
Definition: pngconf.h:1191
png_get_cHRM
png_uint_32 PNGAPI png_get_cHRM(png_structp png_ptr, png_infop info_ptr, double *white_x, double *white_y, double *red_x, double *red_y, double *green_x, double *green_y, double *blue_x, double *blue_y)
Definition: pngget.c:378
write_row_callback
void write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
Definition: pngtest.c:153
tIME_string
static char tIME_string[PNG_tIME_STRING_LENGTH]
Definition: pngtest.c:87
png_charpp
char FAR *FAR * png_charpp
Definition: pngconf.h:1223
length
png_bytep png_bytep png_size_t length
Definition: png.h:1538
white_x
png_infop double * white_x
Definition: png.h:2249
wrote_question
static int wrote_question
Definition: pngtest.c:284
png_write_end
void PNGAPI png_write_end(png_structp png_ptr, png_infop info_ptr)
Definition: pngwrite.c:297
png.h
green_y
png_infop double double double double double double * green_y
Definition: png.h:2250
num_unknowns
png_infop png_unknown_chunkp int num_unknowns
Definition: png.h:2482
trans_values
png_infop png_bytep int png_color_16p * trans_values
Definition: png.h:2433
color_type
png_infop png_uint_32 png_uint_32 int int * color_type
Definition: png.h:2307
hist
png_infop png_uint_16p * hist
Definition: png.h:2297
png_textp
png_text FAR * png_textp
Definition: png.h:651
png_write_info
void PNGAPI png_write_info(png_structp png_ptr, png_infop info_ptr)
Definition: pngwrite.c:127
PNG_FREE_UNKN
#define PNG_FREE_UNKN
Definition: png.h:2091
png_FILE_p
FILE * png_FILE_p
Definition: pngconf.h:1208
png_get_gAMA
png_uint_32 PNGAPI png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
Definition: pngget.c:442
png_set_write_fn
void PNGAPI png_set_write_fn(png_structp png_ptr, png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
Definition: pngwio.c:170
png_get_user_chunk_ptr
png_voidp PNGAPI png_get_user_chunk_ptr(png_structp png_ptr)
Definition: pngget.c:823
png_error
void PNGAPI png_error(png_structp png_ptr, png_const_charp error_message)
Definition: pngerror.c:36
png_set_read_status_fn
void PNGAPI png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn)
Definition: pngread.c:1297
png_row_infop
png_row_info FAR * png_row_infop
Definition: png.h:1095
png_set_tIME
void PNGAPI png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
Definition: pngset.c:904
mod_time
png_infop png_timep * mod_time
Definition: png.h:2422
red_x
png_infop double double double * red_x
Definition: png.h:2249
png_free
void PNGAPI png_free(png_structp png_ptr, png_voidp ptr)
Definition: pngmem.c:498
PNG_HEADER_VERSION_STRING
#define PNG_HEADER_VERSION_STRING
Definition: png.h:414
PNG_tIME_STRING_LENGTH
#define PNG_tIME_STRING_LENGTH
Definition: pngtest.c:85
WRITEFILE
#define WRITEFILE(file, data, length, check)
Definition: pngtest.c:49
png_get_sBIT
png_uint_32 PNGAPI png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
Definition: pngget.c:710
num_palette
png_colorp int num_palette
Definition: png.h:1717
read_user_chunk_callback
static int read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk)
Definition: pngtest.c:610


openhrp3
Author(s): AIST, General Robotix Inc., Nakamura Lab of Dept. of Mechano Informatics at University of Tokyo
autogenerated on Wed Sep 7 2022 02:51:04