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libpng 1.2.53 export fix
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1
2/* pngtest.c - a simple test program to test libpng
3 *
4 * Last changed in libpng 1.2.53 [February 26, 2015]
5 * Copyright (c) 1998-2014 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#define PNG_PEDANTIC_WARNINGS
35#include "png.h"
36
37#ifdef _WIN32_WCE
38# if _WIN32_WCE < 211
39 __error__ (f|w)printf functions are not supported on old WindowsCE.;
40# endif
41# include <windows.h>
42# include <stdlib.h>
43# define READFILE(file, data, length, check) \
44 if (ReadFile(file, data, length, &check, NULL)) check = 0
45# define WRITEFILE(file, data, length, check)) \
46 if (WriteFile(file, data, length, &check, NULL)) check = 0
47# define FCLOSE(file) CloseHandle(file)
48#else
49# include <stdio.h>
50# include <stdlib.h>
51# define READFILE(file, data, length, check) \
52 check=(png_size_t)fread(data, (png_size_t)1, length, file)
53# define WRITEFILE(file, data, length, check) \
54 check=(png_size_t)fwrite(data, (png_size_t)1, length, file)
55# define FCLOSE(file) fclose(file)
56#endif
57
58#ifndef PNG_STDIO_SUPPORTED
59# ifdef _WIN32_WCE
60 typedef HANDLE png_FILE_p;
61# else
62 typedef FILE * png_FILE_p;
63# endif
64#endif
65
66/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
67#ifndef PNG_DEBUG
68# define PNG_DEBUG 0
69#endif
70
71#if !PNG_DEBUG
72# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
73#endif
74
75/* Turn on CPU timing
76#define PNGTEST_TIMING
77*/
78
79#ifndef PNG_FLOATING_POINT_SUPPORTED
80#undef PNGTEST_TIMING
81#endif
82
83#ifdef PNGTEST_TIMING
84static float t_start, t_stop, t_decode, t_encode, t_misc;
85#include <time.h>
86#endif
87
88#ifdef PNG_TIME_RFC1123_SUPPORTED
89#define PNG_tIME_STRING_LENGTH 29
90static int tIME_chunk_present = 0;
91static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
92#endif
93
94static int verbose = 0;
95
96int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
97
98#ifdef __TURBOC__
99#include <mem.h>
100#endif
101
102/* Defined so I can write to a file on gui/windowing platforms */
103/* #define STDERR stderr */
104#define STDERR stdout /* For DOS */
105
106/* In case a system header (e.g., on AIX) defined jmpbuf */
107#ifdef jmpbuf
108# undef jmpbuf
109#endif
110
111/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
112#ifndef png_jmpbuf
113# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
114#endif
115
116/* Example of using row callbacks to make a simple progress meter */
117static int status_pass = 1;
118static int status_dots_requested = 0;
119static int status_dots = 1;
120
121void
122#ifdef PNG_1_0_X
123PNGAPI
124#endif
125read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
126void
127#ifdef PNG_1_0_X
128PNGAPI
129#endif
130read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
131{
132 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
133 return;
134 if (status_pass != pass)
135 {
136 fprintf(stdout, "\n Pass %d: ", pass);
137 status_pass = pass;
138 status_dots = 31;
139 }
140 status_dots--;
141 if (status_dots == 0)
142 {
143 fprintf(stdout, "\n ");
144 status_dots=30;
145 }
146 fprintf(stdout, "r");
147}
148
149void
150#ifdef PNG_1_0_X
151PNGAPI
152#endif
153write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
154void
155#ifdef PNG_1_0_X
156PNGAPI
157#endif
158write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
159{
160 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
161 return;
162 fprintf(stdout, "w");
163}
164
165
166#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
167/* Example of using user transform callback (we don't transform anything,
168 * but merely examine the row filters. We set this to 256 rather than
169 * 5 in case illegal filter values are present.)
170 */
171static png_uint_32 filters_used[256];
172void
173#ifdef PNG_1_0_X
174PNGAPI
175#endif
176count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
177void
178#ifdef PNG_1_0_X
179PNGAPI
180#endif
181count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
182{
183 if (png_ptr != NULL && row_info != NULL)
184 ++filters_used[*(data - 1)];
185}
186#endif
187
188#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
189/* Example of using user transform callback (we don't transform anything,
190 * but merely count the zero samples)
191 */
192
193static png_uint_32 zero_samples;
194
195void
196#ifdef PNG_1_0_X
197PNGAPI
198#endif
199count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
200void
201#ifdef PNG_1_0_X
202PNGAPI
203#endif
204count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
205{
206 png_bytep dp = data;
207 if (png_ptr == NULL)return;
208
209 /* Contents of row_info:
210 * png_uint_32 width width of row
211 * png_uint_32 rowbytes number of bytes in row
212 * png_byte color_type color type of pixels
213 * png_byte bit_depth bit depth of samples
214 * png_byte channels number of channels (1-4)
215 * png_byte pixel_depth bits per pixel (depth*channels)
216 */
217
218 /* Counts the number of zero samples (or zero pixels if color_type is 3 */
219
220 if (row_info->color_type == 0 || row_info->color_type == 3)
221 {
222 int pos = 0;
223 png_uint_32 n, nstop;
224 for (n = 0, nstop=row_info->width; n<nstop; n++)
225 {
226 if (row_info->bit_depth == 1)
227 {
228 if (((*dp << pos++ ) & 0x80) == 0)
229 zero_samples++;
230 if (pos == 8)
231 {
232 pos = 0;
233 dp++;
234 }
235 }
236 if (row_info->bit_depth == 2)
237 {
238 if (((*dp << (pos+=2)) & 0xc0) == 0)
239 zero_samples++;
240 if (pos == 8)
241 {
242 pos = 0;
243 dp++;
244 }
245 }
246 if (row_info->bit_depth == 4)
247 {
248 if (((*dp << (pos+=4)) & 0xf0) == 0)
249 zero_samples++;
250 if (pos == 8)
251 {
252 pos = 0;
253 dp++;
254 }
255 }
256 if (row_info->bit_depth == 8)
257 if (*dp++ == 0)
258 zero_samples++;
259 if (row_info->bit_depth == 16)
260 {
261 if ((*dp | *(dp+1)) == 0)
262 zero_samples++;
263 dp+=2;
264 }
265 }
266 }
267 else /* Other color types */
268 {
269 png_uint_32 n, nstop;
270 int channel;
271 int color_channels = row_info->channels;
272 if (row_info->color_type > 3)color_channels--;
273
274 for (n = 0, nstop=row_info->width; n<nstop; n++)
275 {
276 for (channel = 0; channel < color_channels; channel++)
277 {
278 if (row_info->bit_depth == 8)
279 if (*dp++ == 0)
280 zero_samples++;
281 if (row_info->bit_depth == 16)
282 {
283 if ((*dp | *(dp+1)) == 0)
284 zero_samples++;
285 dp+=2;
286 }
287 }
288 if (row_info->color_type > 3)
289 {
290 dp++;
291 if (row_info->bit_depth == 16)
292 dp++;
293 }
294 }
295 }
296}
297#endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
298
299static int wrote_question = 0;
300
301#ifndef PNG_STDIO_SUPPORTED
302/* START of code to validate stdio-free compilation */
303/* These copies of the default read/write functions come from pngrio.c and
304 * pngwio.c. They allow "don't include stdio" testing of the library.
305 * This is the function that does the actual reading of data. If you are
306 * not reading from a standard C stream, you should create a replacement
307 * read_data function and use it at run time with png_set_read_fn(), rather
308 * than changing the library.
309 */
310
311#ifndef USE_FAR_KEYWORD
312static void
313pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
314{
315 png_size_t check = 0;
316 png_voidp io_ptr;
317
318 /* fread() returns 0 on error, so it is OK to store this in a png_size_t
319 * instead of an int, which is what fread() actually returns.
320 */
321 io_ptr = png_get_io_ptr(png_ptr);
322 if (io_ptr != NULL)
323 {
324 READFILE((png_FILE_p)io_ptr, data, length, check);
325 }
326
327 if (check != length)
328 {
329 png_error(png_ptr, "Read Error!");
330 }
331}
332#else
333/* This is the model-independent version. Since the standard I/O library
334 can't handle far buffers in the medium and small models, we have to copy
335 the data.
336*/
337
338#define NEAR_BUF_SIZE 1024
339#define MIN(a,b) (a <= b ? a : b)
340
341static void
342pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
343{
344 int check;
345 png_byte *n_data;
346 png_FILE_p io_ptr;
347
348 /* Check if data really is near. If so, use usual code. */
349 n_data = (png_byte *)CVT_PTR_NOCHECK(data);
350 io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
351 if ((png_bytep)n_data == data)
352 {
353 READFILE(io_ptr, n_data, length, check);
354 }
355 else
356 {
357 png_byte buf[NEAR_BUF_SIZE];
358 png_size_t read, remaining, err;
359 check = 0;
360 remaining = length;
361 do
362 {
363 read = MIN(NEAR_BUF_SIZE, remaining);
364 READFILE(io_ptr, buf, 1, err);
365 png_memcpy(data, buf, read); /* Copy far buffer to near buffer */
366 if (err != read)
367 break;
368 else
369 check += err;
370 data += read;
371 remaining -= read;
372 }
373 while (remaining != 0);
374 }
375 if (check != length)
376 png_error(png_ptr, "read Error");
377}
378#endif /* USE_FAR_KEYWORD */
379
380#ifdef PNG_WRITE_FLUSH_SUPPORTED
381static void
382pngtest_flush(png_structp png_ptr)
383{
384 /* Do nothing; fflush() is said to be just a waste of energy. */
385 PNG_UNUSED(png_ptr) /* Stifle compiler warning */
386}
387#endif
388
389/* This is the function that does the actual writing of data. If you are
390 * not writing to a standard C stream, you should create a replacement
391 * write_data function and use it at run time with png_set_write_fn(), rather
392 * than changing the library.
393 */
394#ifndef USE_FAR_KEYWORD
395static void
396pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
397{
398 png_uint_32 check;
399
400 WRITEFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
401 if (check != length)
402 {
403 png_error(png_ptr, "Write Error");
404 }
405}
406#else
407/* This is the model-independent version. Since the standard I/O library
408 can't handle far buffers in the medium and small models, we have to copy
409 the data.
410*/
411
412#define NEAR_BUF_SIZE 1024
413#define MIN(a,b) (a <= b ? a : b)
414
415static void
416pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
417{
418 png_uint_32 check;
419 png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
420 png_FILE_p io_ptr;
421
422 /* Check if data really is near. If so, use usual code. */
423 near_data = (png_byte *)CVT_PTR_NOCHECK(data);
424 io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
425 if ((png_bytep)near_data == data)
426 {
427 WRITEFILE(io_ptr, near_data, length, check);
428 }
429 else
430 {
431 png_byte buf[NEAR_BUF_SIZE];
432 png_size_t written, remaining, err;
433 check = 0;
434 remaining = length;
435 do
436 {
437 written = MIN(NEAR_BUF_SIZE, remaining);
438 png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
439 WRITEFILE(io_ptr, buf, written, err);
440 if (err != written)
441 break;
442 else
443 check += err;
444 data += written;
445 remaining -= written;
446 }
447 while (remaining != 0);
448 }
449 if (check != length)
450 {
451 png_error(png_ptr, "Write Error");
452 }
453}
454#endif /* USE_FAR_KEYWORD */
455
456/* This function is called when there is a warning, but the library thinks
457 * it can continue anyway. Replacement functions don't have to do anything
458 * here if you don't want to. In the default configuration, png_ptr is
459 * not used, but it is passed in case it may be useful.
460 */
461static void
462pngtest_warning(png_structp png_ptr, png_const_charp message)
463{
464 PNG_CONST char *name = "UNKNOWN (ERROR!)";
465 char *test;
466 test = png_get_error_ptr(png_ptr);
467 if (test == NULL)
468 fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
469 else
470 fprintf(STDERR, "%s: libpng warning: %s\n", test, message);
471}
472
473/* This is the default error handling function. Note that replacements for
474 * this function MUST NOT RETURN, or the program will likely crash. This
475 * function is used by default, or if the program supplies NULL for the
476 * error function pointer in png_set_error_fn().
477 */
478static void
479pngtest_error(png_structp png_ptr, png_const_charp message)
480{
481 pngtest_warning(png_ptr, message);
482 /* We can return because png_error calls the default handler, which is
483 * actually OK in this case.
484 */
485}
486#endif /* !PNG_STDIO_SUPPORTED */
487/* END of code to validate stdio-free compilation */
488
489/* START of code to validate memory allocation and deallocation */
490#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
491
492/* Allocate memory. For reasonable files, size should never exceed
493 * 64K. However, zlib may allocate more then 64K if you don't tell
494 * it not to. See zconf.h and png.h for more information. zlib does
495 * need to allocate exactly 64K, so whatever you call here must
496 * have the ability to do that.
497 *
498 * This piece of code can be compiled to validate max 64K allocations
499 * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
500 */
501typedef struct memory_information
502{
503 png_uint_32 size;
504 png_voidp pointer;
505 struct memory_information FAR *next;
506} memory_information;
507typedef memory_information FAR *memory_infop;
508
509static memory_infop pinformation = NULL;
510static int current_allocation = 0;
511static int maximum_allocation = 0;
512static int total_allocation = 0;
513static int num_allocations = 0;
514
515png_voidp png_debug_malloc PNGARG((png_structp png_ptr, png_uint_32 size));
516void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
517
518png_voidp
519png_debug_malloc(png_structp png_ptr, png_uint_32 size)
520{
521
522 /* png_malloc has already tested for NULL; png_create_struct calls
523 * png_debug_malloc directly, with png_ptr == NULL which is OK
524 */
525
526 if (size == 0)
527 return (NULL);
528
529 /* This calls the library allocator twice, once to get the requested
530 buffer and once to get a new free list entry. */
531 {
532 /* Disable malloc_fn and free_fn */
533 memory_infop pinfo;
534 png_set_mem_fn(png_ptr, NULL, NULL, NULL);
535 pinfo = (memory_infop)png_malloc(png_ptr,
536 (png_uint_32)png_sizeof(*pinfo));
537 pinfo->size = size;
538 current_allocation += size;
539 total_allocation += size;
540 num_allocations ++;
541 if (current_allocation > maximum_allocation)
542 maximum_allocation = current_allocation;
543 pinfo->pointer = (png_voidp)png_malloc(png_ptr, size);
544 /* Restore malloc_fn and free_fn */
545 png_set_mem_fn(png_ptr,
546 png_voidp_NULL, (png_malloc_ptr)png_debug_malloc,
547 (png_free_ptr)png_debug_free);
548 if (size != 0 && pinfo->pointer == NULL)
549 {
550 current_allocation -= size;
551 total_allocation -= size;
552 png_error(png_ptr,
553 "out of memory in pngtest->png_debug_malloc.");
554 }
555 pinfo->next = pinformation;
556 pinformation = pinfo;
557 /* Make sure the caller isn't assuming zeroed memory. */
558 png_memset(pinfo->pointer, 0xdd, pinfo->size);
559 if (verbose)
560 printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
561 pinfo->pointer);
562 return (png_voidp)(pinfo->pointer);
563 }
564}
565
566/* Free a pointer. It is removed from the list at the same time. */
567void
568png_debug_free(png_structp png_ptr, png_voidp ptr)
569{
570 if (png_ptr == NULL)
571 fprintf(STDERR, "NULL pointer to png_debug_free.\n");
572 if (ptr == 0)
573 {
574#if 0 /* This happens all the time. */
575 fprintf(STDERR, "WARNING: freeing NULL pointer\n");
576#endif
577 return;
578 }
579
580 /* Unlink the element from the list. */
581 {
582 memory_infop FAR *ppinfo = &pinformation;
583 for (;;)
584 {
585 memory_infop pinfo = *ppinfo;
586 if (pinfo->pointer == ptr)
587 {
588 *ppinfo = pinfo->next;
589 current_allocation -= pinfo->size;
590 if (current_allocation < 0)
591 fprintf(STDERR, "Duplicate free of memory\n");
592 /* We must free the list element too, but first kill
593 the memory that is to be freed. */
594 png_memset(ptr, 0x55, pinfo->size);
595 png_free_default(png_ptr, pinfo);
596 pinfo = NULL;
597 break;
598 }
599 if (pinfo->next == NULL)
600 {
601 fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
602 break;
603 }
604 ppinfo = &pinfo->next;
605 }
606 }
607
608 /* Finally free the data. */
609 if (verbose)
610 printf("Freeing %x\n", ptr);
611 png_free_default(png_ptr, ptr);
612 ptr = NULL;
613}
614#endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
615/* END of code to test memory allocation/deallocation */
616
617
618/* Demonstration of user chunk support of the sTER and vpAg chunks */
619#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
620
621/* (sTER is a public chunk not yet known by libpng. vpAg is a private
622chunk used in ImageMagick to store "virtual page" size). */
623
624static png_uint_32 user_chunk_data[4];
625
626 /* 0: sTER mode + 1
627 * 1: vpAg width
628 * 2: vpAg height
629 * 3: vpAg units
630 */
631
632static int read_user_chunk_callback(png_struct *png_ptr,
633 png_unknown_chunkp chunk)
634{
635 png_uint_32
636 *my_user_chunk_data;
637
638 /* Return one of the following:
639 * return (-n); chunk had an error
640 * return (0); did not recognize
641 * return (n); success
642 *
643 * The unknown chunk structure contains the chunk data:
644 * png_byte name[5];
645 * png_byte *data;
646 * png_size_t size;
647 *
648 * Note that libpng has already taken care of the CRC handling.
649 */
650
651 if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
652 chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
653 {
654 /* Found sTER chunk */
655 if (chunk->size != 1)
656 return (-1); /* Error return */
657 if (chunk->data[0] != 0 && chunk->data[0] != 1)
658 return (-1); /* Invalid mode */
659 my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
660 my_user_chunk_data[0]=chunk->data[0]+1;
661 return (1);
662 }
663
664 if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
665 chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
666 return (0); /* Did not recognize */
667
668 /* Found ImageMagick vpAg chunk */
669
670 if (chunk->size != 9)
671 return (-1); /* Error return */
672
673 my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
674
675 my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
676 my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
677 my_user_chunk_data[3]=(png_uint_32)chunk->data[8];
678
679 return (1);
680
681}
682#endif
683/* END of code to demonstrate user chunk support */
684
685/* Test one file */
686int
687test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
688{
689 static png_FILE_p fpin;
690 static png_FILE_p fpout; /* "static" prevents setjmp corruption */
691 png_structp read_ptr;
692 png_infop read_info_ptr, end_info_ptr;
693#ifdef PNG_WRITE_SUPPORTED
694 png_structp write_ptr;
695 png_infop write_info_ptr;
696 png_infop write_end_info_ptr;
697#else
698 png_structp write_ptr = NULL;
699 png_infop write_info_ptr = NULL;
700 png_infop write_end_info_ptr = NULL;
701#endif
702 png_bytep row_buf;
703 png_uint_32 y;
704 png_uint_32 width, height;
705 int num_pass, pass;
706 int bit_depth, color_type;
707#ifdef PNG_SETJMP_SUPPORTED
708#ifdef USE_FAR_KEYWORD
709 jmp_buf jmpbuf;
710#endif
711#endif
712
713#ifdef _WIN32_WCE
714 TCHAR path[MAX_PATH];
715#endif
716 char inbuf[256], outbuf[256];
717
718 row_buf = NULL;
719
720#ifdef _WIN32_WCE
721 MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
722 if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0,
723 NULL)) == INVALID_HANDLE_VALUE)
724#else
725 if ((fpin = fopen(inname, "rb")) == NULL)
726#endif
727 {
728 fprintf(STDERR, "Could not find input file %s\n", inname);
729 return (1);
730 }
731
732#ifdef _WIN32_WCE
733 MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
734 if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
735 0, NULL)) == INVALID_HANDLE_VALUE)
736#else
737 if ((fpout = fopen(outname, "wb")) == NULL)
738#endif
739 {
740 fprintf(STDERR, "Could not open output file %s\n", outname);
741 FCLOSE(fpin);
742 return (1);
743 }
744
745 png_debug(0, "Allocating read and write structures");
746#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
747 read_ptr =
748 png_create_read_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
749 png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
750 (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
751#else
752 read_ptr =
753 png_create_read_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
754 png_error_ptr_NULL, png_error_ptr_NULL);
755#endif
756#ifndef PNG_STDIO_SUPPORTED
757 png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
758 pngtest_warning);
759#endif
760
761#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
762 user_chunk_data[0] = 0;
763 user_chunk_data[1] = 0;
764 user_chunk_data[2] = 0;
765 user_chunk_data[3] = 0;
766 png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
767 read_user_chunk_callback);
768
769#endif
770#ifdef PNG_WRITE_SUPPORTED
771#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
772 write_ptr =
773 png_create_write_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
774 png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
775 (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
776#else
777 write_ptr =
778 png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
779 png_error_ptr_NULL, png_error_ptr_NULL);
780#endif
781#ifndef PNG_STDIO_SUPPORTED
782 png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
783 pngtest_warning);
784#endif
785#endif
786 png_debug(0, "Allocating read_info, write_info and end_info structures");
787 read_info_ptr = png_create_info_struct(read_ptr);
788 end_info_ptr = png_create_info_struct(read_ptr);
789#ifdef PNG_WRITE_SUPPORTED
790 write_info_ptr = png_create_info_struct(write_ptr);
791 write_end_info_ptr = png_create_info_struct(write_ptr);
792#endif
793
794#ifdef PNG_SETJMP_SUPPORTED
795 png_debug(0, "Setting jmpbuf for read struct");
796#ifdef USE_FAR_KEYWORD
797 if (setjmp(jmpbuf))
798#else
799 if (setjmp(png_jmpbuf(read_ptr)))
800#endif
801 {
802 fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
803 png_free(read_ptr, row_buf);
804 row_buf = NULL;
805 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
806#ifdef PNG_WRITE_SUPPORTED
807 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
808 png_destroy_write_struct(&write_ptr, &write_info_ptr);
809#endif
810 FCLOSE(fpin);
811 FCLOSE(fpout);
812 return (1);
813 }
814#ifdef USE_FAR_KEYWORD
815 png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
816#endif
817
818#ifdef PNG_WRITE_SUPPORTED
819 png_debug(0, "Setting jmpbuf for write struct");
820#ifdef USE_FAR_KEYWORD
821 if (setjmp(jmpbuf))
822#else
823 if (setjmp(png_jmpbuf(write_ptr)))
824#endif
825 {
826 fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
827 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
828 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
829#ifdef PNG_WRITE_SUPPORTED
830 png_destroy_write_struct(&write_ptr, &write_info_ptr);
831#endif
832 FCLOSE(fpin);
833 FCLOSE(fpout);
834 return (1);
835 }
836#ifdef USE_FAR_KEYWORD
837 png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
838#endif
839#endif
840#endif
841
842 png_debug(0, "Initializing input and output streams");
843#ifdef PNG_STDIO_SUPPORTED
844 png_init_io(read_ptr, fpin);
845# ifdef PNG_WRITE_SUPPORTED
846 png_init_io(write_ptr, fpout);
847# endif
848#else
849 png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
850# ifdef PNG_WRITE_SUPPORTED
851 png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
852# ifdef PNG_WRITE_FLUSH_SUPPORTED
853 pngtest_flush);
854# else
855 NULL);
856# endif
857# endif
858#endif
859 if (status_dots_requested == 1)
860 {
861#ifdef PNG_WRITE_SUPPORTED
862 png_set_write_status_fn(write_ptr, write_row_callback);
863#endif
864 png_set_read_status_fn(read_ptr, read_row_callback);
865 }
866 else
867 {
868#ifdef PNG_WRITE_SUPPORTED
869 png_set_write_status_fn(write_ptr, png_write_status_ptr_NULL);
870#endif
871 png_set_read_status_fn(read_ptr, png_read_status_ptr_NULL);
872 }
873
874#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
875 {
876 int i;
877 for (i = 0; i<256; i++)
878 filters_used[i] = 0;
879 png_set_read_user_transform_fn(read_ptr, count_filters);
880 }
881#endif
882#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
883 zero_samples = 0;
884 png_set_write_user_transform_fn(write_ptr, count_zero_samples);
885#endif
886
887#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
888# ifndef PNG_HANDLE_CHUNK_ALWAYS
889# define PNG_HANDLE_CHUNK_ALWAYS 3
890# endif
891 png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
892 png_bytep_NULL, 0);
893#endif
894#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
895# ifndef PNG_HANDLE_CHUNK_IF_SAFE
896# define PNG_HANDLE_CHUNK_IF_SAFE 2
897# endif
898 png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE,
899 png_bytep_NULL, 0);
900#endif
901
902 png_debug(0, "Reading info struct");
903 png_read_info(read_ptr, read_info_ptr);
904
905 png_debug(0, "Transferring info struct");
906 {
907 int interlace_type, compression_type, filter_type;
908
909 if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
910 &color_type, &interlace_type, &compression_type, &filter_type))
911 {
912 png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
913#ifdef PNG_WRITE_INTERLACING_SUPPORTED
914 color_type, interlace_type, compression_type, filter_type);
915#else
916 color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
917#endif
918 }
919 }
920#ifdef PNG_FIXED_POINT_SUPPORTED
921#ifdef PNG_cHRM_SUPPORTED
922 {
923 png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
924 blue_y;
925 if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
926 &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
927 {
928 png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
929 red_y, green_x, green_y, blue_x, blue_y);
930 }
931 }
932#endif
933#ifdef PNG_gAMA_SUPPORTED
934 {
935 png_fixed_point gamma;
936
937 if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
938 png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
939 }
940#endif
941#else /* Use floating point versions */
942#ifdef PNG_FLOATING_POINT_SUPPORTED
943#ifdef PNG_cHRM_SUPPORTED
944 {
945 double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
946 blue_y;
947 if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
948 &red_y, &green_x, &green_y, &blue_x, &blue_y))
949 {
950 png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
951 red_y, green_x, green_y, blue_x, blue_y);
952 }
953 }
954#endif
955#ifdef PNG_gAMA_SUPPORTED
956 {
957 double gamma;
958
959 if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
960 png_set_gAMA(write_ptr, write_info_ptr, gamma);
961 }
962#endif
963#endif /* Floating point */
964#endif /* Fixed point */
965#ifdef PNG_iCCP_SUPPORTED
966 {
967 png_charp name;
968 png_charp profile;
969 png_uint_32 proflen;
970 int compression_type;
971
972 if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
973 &profile, &proflen))
974 {
975 png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
976 profile, proflen);
977 }
978 }
979#endif
980#ifdef PNG_sRGB_SUPPORTED
981 {
982 int intent;
983
984 if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
985 png_set_sRGB(write_ptr, write_info_ptr, intent);
986 }
987#endif
988 {
989 png_colorp palette;
990 int num_palette;
991
992 if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
993 png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
994 }
995#ifdef PNG_bKGD_SUPPORTED
996 {
997 png_color_16p background;
998
999 if (png_get_bKGD(read_ptr, read_info_ptr, &background))
1000 {
1001 png_set_bKGD(write_ptr, write_info_ptr, background);
1002 }
1003 }
1004#endif
1005#ifdef PNG_hIST_SUPPORTED
1006 {
1007 png_uint_16p hist;
1008
1009 if (png_get_hIST(read_ptr, read_info_ptr, &hist))
1010 png_set_hIST(write_ptr, write_info_ptr, hist);
1011 }
1012#endif
1013#ifdef PNG_oFFs_SUPPORTED
1014 {
1015 png_int_32 offset_x, offset_y;
1016 int unit_type;
1017
1018 if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
1019 &unit_type))
1020 {
1021 png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
1022 }
1023 }
1024#endif
1025#ifdef PNG_pCAL_SUPPORTED
1026 {
1027 png_charp purpose, units;
1028 png_charpp params;
1029 png_int_32 X0, X1;
1030 int type, nparams;
1031
1032 if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
1033 &nparams, &units, &params))
1034 {
1035 png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
1036 nparams, units, params);
1037 }
1038 }
1039#endif
1040#ifdef PNG_pHYs_SUPPORTED
1041 {
1042 png_uint_32 res_x, res_y;
1043 int unit_type;
1044
1045 if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
1046 png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
1047 }
1048#endif
1049#ifdef PNG_sBIT_SUPPORTED
1050 {
1051 png_color_8p sig_bit;
1052
1053 if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
1054 png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
1055 }
1056#endif
1057#ifdef PNG_sCAL_SUPPORTED
1058#ifdef PNG_FLOATING_POINT_SUPPORTED
1059 {
1060 int unit;
1061 double scal_width, scal_height;
1062
1063 if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
1064 &scal_height))
1065 {
1066 png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
1067 }
1068 }
1069#else
1070#ifdef PNG_FIXED_POINT_SUPPORTED
1071 {
1072 int unit;
1073 png_charp scal_width, scal_height;
1074
1075 if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
1076 &scal_height))
1077 {
1078 png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
1079 scal_height);
1080 }
1081 }
1082#endif
1083#endif
1084#endif
1085#ifdef PNG_TEXT_SUPPORTED
1086 {
1087 png_textp text_ptr;
1088 int num_text;
1089
1090 if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
1091 {
1092 png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
1093 png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
1094 }
1095 }
1096#endif
1097#ifdef PNG_tIME_SUPPORTED
1098 {
1099 png_timep mod_time;
1100
1101 if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
1102 {
1103 png_set_tIME(write_ptr, write_info_ptr, mod_time);
1104#ifdef PNG_TIME_RFC1123_SUPPORTED
1105 /* We have to use png_memcpy instead of "=" because the string
1106 * pointed to by png_convert_to_rfc1123() gets free'ed before
1107 * we use it.
1108 */
1109 png_memcpy(tIME_string,
1110 png_convert_to_rfc1123(read_ptr, mod_time),
1111 png_sizeof(tIME_string));
1112 tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1113 tIME_chunk_present++;
1114#endif /* PNG_TIME_RFC1123_SUPPORTED */
1115 }
1116 }
1117#endif
1118#ifdef PNG_tRNS_SUPPORTED
1119 {
1120 png_bytep trans;
1121 int num_trans;
1122 png_color_16p trans_values;
1123
1124 if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
1125 &trans_values))
1126 {
1127 int sample_max = (1 << bit_depth);
1128 /* libpng doesn't reject a tRNS chunk with out-of-range samples */
1129 if (!((color_type == PNG_COLOR_TYPE_GRAY &&
1130 (int)trans_values->gray > sample_max) ||
1131 (color_type == PNG_COLOR_TYPE_RGB &&
1132 ((int)trans_values->red > sample_max ||
1133 (int)trans_values->green > sample_max ||
1134 (int)trans_values->blue > sample_max))))
1135 png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
1136 trans_values);
1137 }
1138 }
1139#endif
1140#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1141 {
1142 png_unknown_chunkp unknowns;
1143 int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
1144 &unknowns);
1145 if (num_unknowns)
1146 {
1147 png_size_t i;
1148 png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
1149 num_unknowns);
1150 /* Copy the locations from the read_info_ptr. The automatically
1151 * generated locations in write_info_ptr are wrong because we
1152 * haven't written anything yet.
1153 */
1154 for (i = 0; i < (png_size_t)num_unknowns; i++)
1155 png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
1156 unknowns[i].location);
1157 }
1158 }
1159#endif
1160
1161#ifdef PNG_WRITE_SUPPORTED
1162 png_debug(0, "Writing info struct");
1163
1164/* If we wanted, we could write info in two steps:
1165 * png_write_info_before_PLTE(write_ptr, write_info_ptr);
1166 */
1167 png_write_info(write_ptr, write_info_ptr);
1168
1169#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
1170 if (user_chunk_data[0] != 0)
1171 {
1172 png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
1173
1174 unsigned char
1175 ster_chunk_data[1];
1176
1177 if (verbose)
1178 fprintf(STDERR, "\n stereo mode = %lu\n",
1179 (unsigned long)(user_chunk_data[0] - 1));
1180 ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
1181 png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
1182 }
1183 if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
1184 {
1185 png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
1186
1187 unsigned char
1188 vpag_chunk_data[9];
1189
1190 if (verbose)
1191 fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n",
1192 (unsigned long)user_chunk_data[1],
1193 (unsigned long)user_chunk_data[2],
1194 (unsigned long)user_chunk_data[3]);
1195 png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
1196 png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
1197 vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
1198 png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
1199 }
1200
1201#endif
1202#endif
1203
1204#ifdef SINGLE_ROWBUF_ALLOC
1205 png_debug(0, "Allocating row buffer...");
1206 row_buf = (png_bytep)png_malloc(read_ptr,
1207 png_get_rowbytes(read_ptr, read_info_ptr));
1208 png_debug1(0, "0x%08lx", (unsigned long)row_buf);
1209#endif /* SINGLE_ROWBUF_ALLOC */
1210 png_debug(0, "Writing row data");
1211
1212#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
1213 defined(PNG_WRITE_INTERLACING_SUPPORTED)
1214 num_pass = png_set_interlace_handling(read_ptr);
1215# ifdef PNG_WRITE_SUPPORTED
1216 png_set_interlace_handling(write_ptr);
1217# endif
1218#else
1219 num_pass = 1;
1220#endif
1221
1222#ifdef PNGTEST_TIMING
1223 t_stop = (float)clock();
1224 t_misc += (t_stop - t_start);
1225 t_start = t_stop;
1226#endif
1227 for (pass = 0; pass < num_pass; pass++)
1228 {
1229 png_debug1(0, "Writing row data for pass %d", pass);
1230 for (y = 0; y < height; y++)
1231 {
1232#ifndef SINGLE_ROWBUF_ALLOC
1233 png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y);
1234 row_buf = (png_bytep)png_malloc(read_ptr,
1235 png_get_rowbytes(read_ptr, read_info_ptr));
1236 png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf,
1237 png_get_rowbytes(read_ptr, read_info_ptr));
1238#endif /* !SINGLE_ROWBUF_ALLOC */
1239 png_read_rows(read_ptr, (png_bytepp)&row_buf, png_bytepp_NULL, 1);
1240
1241#ifdef PNG_WRITE_SUPPORTED
1242#ifdef PNGTEST_TIMING
1243 t_stop = (float)clock();
1244 t_decode += (t_stop - t_start);
1245 t_start = t_stop;
1246#endif
1247 png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
1248#ifdef PNGTEST_TIMING
1249 t_stop = (float)clock();
1250 t_encode += (t_stop - t_start);
1251 t_start = t_stop;
1252#endif
1253#endif /* PNG_WRITE_SUPPORTED */
1254
1255#ifndef SINGLE_ROWBUF_ALLOC
1256 png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y);
1257 png_free(read_ptr, row_buf);
1258 row_buf = NULL;
1259#endif /* !SINGLE_ROWBUF_ALLOC */
1260 }
1261 }
1262
1263#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
1264 png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
1265#endif
1266#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1267 png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
1268#endif
1269
1270 png_debug(0, "Reading and writing end_info data");
1271
1272 png_read_end(read_ptr, end_info_ptr);
1273#ifdef PNG_TEXT_SUPPORTED
1274 {
1275 png_textp text_ptr;
1276 int num_text;
1277
1278 if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
1279 {
1280 png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
1281 png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
1282 }
1283 }
1284#endif
1285#ifdef PNG_tIME_SUPPORTED
1286 {
1287 png_timep mod_time;
1288
1289 if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
1290 {
1291 png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
1292#ifdef PNG_TIME_RFC1123_SUPPORTED
1293 /* We have to use png_memcpy instead of "=" because the string
1294 pointed to by png_convert_to_rfc1123() gets free'ed before
1295 we use it */
1296 png_memcpy(tIME_string,
1297 png_convert_to_rfc1123(read_ptr, mod_time),
1298 png_sizeof(tIME_string));
1299 tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1300 tIME_chunk_present++;
1301#endif /* PNG_TIME_RFC1123_SUPPORTED */
1302 }
1303 }
1304#endif
1305#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1306 {
1307 png_unknown_chunkp unknowns;
1308 int num_unknowns;
1309 num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
1310 &unknowns);
1311 if (num_unknowns)
1312 {
1313 png_size_t i;
1314 png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
1315 num_unknowns);
1316 /* Copy the locations from the read_info_ptr. The automatically
1317 * generated locations in write_end_info_ptr are wrong because we
1318 * haven't written the end_info yet.
1319 */
1320 for (i = 0; i < (png_size_t)num_unknowns; i++)
1321 png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
1322 unknowns[i].location);
1323 }
1324 }
1325#endif
1326#ifdef PNG_WRITE_SUPPORTED
1327 png_write_end(write_ptr, write_end_info_ptr);
1328#endif
1329
1330#ifdef PNG_EASY_ACCESS_SUPPORTED
1331 if (verbose)
1332 {
1333 png_uint_32 iwidth, iheight;
1334 iwidth = png_get_image_width(write_ptr, write_info_ptr);
1335 iheight = png_get_image_height(write_ptr, write_info_ptr);
1336 fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
1337 (unsigned long)iwidth, (unsigned long)iheight);
1338 }
1339#endif
1340
1341 png_debug(0, "Destroying data structs");
1342#ifdef SINGLE_ROWBUF_ALLOC
1343 png_debug(1, "destroying row_buf for read_ptr");
1344 png_free(read_ptr, row_buf);
1345 row_buf = NULL;
1346#endif /* SINGLE_ROWBUF_ALLOC */
1347 png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr");
1348 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
1349#ifdef PNG_WRITE_SUPPORTED
1350 png_debug(1, "destroying write_end_info_ptr");
1351 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
1352 png_debug(1, "destroying write_ptr, write_info_ptr");
1353 png_destroy_write_struct(&write_ptr, &write_info_ptr);
1354#endif
1355 png_debug(0, "Destruction complete.");
1356
1357 FCLOSE(fpin);
1358 FCLOSE(fpout);
1359
1360 png_debug(0, "Opening files for comparison");
1361#ifdef _WIN32_WCE
1362 MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
1363 if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING,
1364 0, NULL)) == INVALID_HANDLE_VALUE)
1365#else
1366 if ((fpin = fopen(inname, "rb")) == NULL)
1367#endif
1368 {
1369 fprintf(STDERR, "Could not find file %s\n", inname);
1370 return (1);
1371 }
1372
1373#ifdef _WIN32_WCE
1374 MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
1375 if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING,
1376 0, NULL)) == INVALID_HANDLE_VALUE)
1377#else
1378 if ((fpout = fopen(outname, "rb")) == NULL)
1379#endif
1380 {
1381 fprintf(STDERR, "Could not find file %s\n", outname);
1382 FCLOSE(fpin);
1383 return (1);
1384 }
1385
1386 for (;;)
1387 {
1388 png_size_t num_in, num_out;
1389
1390 READFILE(fpin, inbuf, 1, num_in);
1391 READFILE(fpout, outbuf, 1, num_out);
1392
1393 if (num_in != num_out)
1394 {
1395 fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
1396 inname, outname);
1397 if (wrote_question == 0)
1398 {
1399 fprintf(STDERR,
1400 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1401 inname, PNG_ZBUF_SIZE);
1402 fprintf(STDERR,
1403 "\n filtering heuristic (libpng default), compression");
1404 fprintf(STDERR,
1405 " level (zlib default),\n and zlib version (%s)?\n\n",
1406 ZLIB_VERSION);
1407 wrote_question = 1;
1408 }
1409 FCLOSE(fpin);
1410 FCLOSE(fpout);
1411 return (0);
1412 }
1413
1414 if (!num_in)
1415 break;
1416
1417 if (png_memcmp(inbuf, outbuf, num_in))
1418 {
1419 fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
1420 if (wrote_question == 0)
1421 {
1422 fprintf(STDERR,
1423 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1424 inname, PNG_ZBUF_SIZE);
1425 fprintf(STDERR,
1426 "\n filtering heuristic (libpng default), compression");
1427 fprintf(STDERR,
1428 " level (zlib default),\n and zlib version (%s)?\n\n",
1429 ZLIB_VERSION);
1430 wrote_question = 1;
1431 }
1432 FCLOSE(fpin);
1433 FCLOSE(fpout);
1434 return (0);
1435 }
1436 }
1437
1438 FCLOSE(fpin);
1439 FCLOSE(fpout);
1440
1441 return (0);
1442}
1443
1444/* Input and output filenames */
1445#ifdef RISCOS
1446static PNG_CONST char *inname = "pngtest/png";
1447static PNG_CONST char *outname = "pngout/png";
1448#else
1449static PNG_CONST char *inname = "pngtest.png";
1450static PNG_CONST char *outname = "pngout.png";
1451#endif
1452
1453int
1454main(int argc, char *argv[])
1455{
1456 int multiple = 0;
1457 int ierror = 0;
1458
1459 png_structp dummy_ptr;
1460
1461 fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
1462 fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
1463 fprintf(STDERR, "%s", png_get_copyright(NULL));
1464 /* Show the version of libpng used in building the library */
1465 fprintf(STDERR, " library (%lu):%s",
1466 (unsigned long)png_access_version_number(),
1467 png_get_header_version(NULL));
1468 /* Show the version of libpng used in building the application */
1469 fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
1470 PNG_HEADER_VERSION_STRING);
1471 fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
1472 (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
1473
1474 /* Do some consistency checking on the memory allocation settings, I'm
1475 * not sure this matters, but it is nice to know, the first of these
1476 * tests should be impossible because of the way the macros are set
1477 * in pngconf.h
1478 */
1479#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
1480 fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
1481#endif
1482 /* I think the following can happen. */
1483#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
1484 fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
1485#endif
1486
1487 if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
1488 {
1489 fprintf(STDERR,
1490 "Warning: versions are different between png.h and png.c\n");
1491 fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
1492 fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
1493 ++ierror;
1494 }
1495
1496 if (argc > 1)
1497 {
1498 if (strcmp(argv[1], "-m") == 0)
1499 {
1500 multiple = 1;
1501 status_dots_requested = 0;
1502 }
1503 else if (strcmp(argv[1], "-mv") == 0 ||
1504 strcmp(argv[1], "-vm") == 0 )
1505 {
1506 multiple = 1;
1507 verbose = 1;
1508 status_dots_requested = 1;
1509 }
1510 else if (strcmp(argv[1], "-v") == 0)
1511 {
1512 verbose = 1;
1513 status_dots_requested = 1;
1514 inname = argv[2];
1515 }
1516 else
1517 {
1518 inname = argv[1];
1519 status_dots_requested = 0;
1520 }
1521 }
1522
1523 if (!multiple && argc == 3 + verbose)
1524 outname = argv[2 + verbose];
1525
1526 if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
1527 {
1528 fprintf(STDERR,
1529 "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
1530 argv[0], argv[0]);
1531 fprintf(STDERR,
1532 " reads/writes one PNG file (without -m) or multiple files (-m)\n");
1533 fprintf(STDERR,
1534 " with -m %s is used as a temporary file\n", outname);
1535 exit(1);
1536 }
1537
1538 if (multiple)
1539 {
1540 int i;
1541#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1542 int allocation_now = current_allocation;
1543#endif
1544 for (i=2; i<argc; ++i)
1545 {
1546 int kerror;
1547 fprintf(STDERR, "\n Testing %s:", argv[i]);
1548 kerror = test_one_file(argv[i], outname);
1549 if (kerror == 0)
1550 {
1551#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1552 int k;
1553#endif
1554#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
1555 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1556 (unsigned long)zero_samples);
1557#else
1558 fprintf(STDERR, " PASS\n");
1559#endif
1560#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1561 for (k = 0; k<256; k++)
1562 if (filters_used[k])
1563 fprintf(STDERR, " Filter %d was used %lu times\n",
1564 k, (unsigned long)filters_used[k]);
1565#endif
1566#ifdef PNG_TIME_RFC1123_SUPPORTED
1567 if (tIME_chunk_present != 0)
1568 fprintf(STDERR, " tIME = %s\n", tIME_string);
1569 tIME_chunk_present = 0;
1570#endif /* PNG_TIME_RFC1123_SUPPORTED */
1571 }
1572 else
1573 {
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,
1591 (unsigned int) pinfo->pointer);
1592 pinfo = pinfo->next;
1593 }
1594 }
1595#endif
1596 }
1597#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1598 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1599 current_allocation);
1600 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1601 maximum_allocation);
1602 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1603 total_allocation);
1604 fprintf(STDERR, " Number of allocations: %10d\n",
1605 num_allocations);
1606#endif
1607 }
1608 else
1609 {
1610 int i;
1611 for (i = 0; i<3; ++i)
1612 {
1613 int kerror;
1614#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1615 int allocation_now = current_allocation;
1616#endif
1617 if (i == 1) status_dots_requested = 1;
1618 else if (verbose == 0)status_dots_requested = 0;
1619 if (i == 0 || verbose == 1 || ierror != 0)
1620 fprintf(STDERR, "\n Testing %s:", inname);
1621 kerror = test_one_file(inname, outname);
1622 if (kerror == 0)
1623 {
1624 if (verbose == 1 || i == 2)
1625 {
1626#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1627 int k;
1628#endif
1629#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
1630 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1631 (unsigned long)zero_samples);
1632#else
1633 fprintf(STDERR, " PASS\n");
1634#endif
1635#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1636 for (k = 0; k<256; k++)
1637 if (filters_used[k])
1638 fprintf(STDERR, " Filter %d was used %lu times\n",
1639 k, (unsigned long)filters_used[k]);
1640#endif
1641#ifdef PNG_TIME_RFC1123_SUPPORTED
1642 if (tIME_chunk_present != 0)
1643 fprintf(STDERR, " tIME = %s\n", tIME_string);
1644#endif /* PNG_TIME_RFC1123_SUPPORTED */
1645 }
1646 }
1647 else
1648 {
1649 if (verbose == 0 && i != 2)
1650 fprintf(STDERR, "\n Testing %s:", inname);
1651 fprintf(STDERR, " FAIL\n");
1652 ierror += kerror;
1653 }
1654#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1655 if (allocation_now != current_allocation)
1656 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1657 current_allocation - allocation_now);
1658 if (current_allocation != 0)
1659 {
1660 memory_infop pinfo = pinformation;
1661
1662 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1663 current_allocation);
1664 while (pinfo != NULL)
1665 {
1666 fprintf(STDERR, " %lu bytes at %x\n",
1667 (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
1668 pinfo = pinfo->next;
1669 }
1670 }
1671#endif
1672 }
1673#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1674 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1675 current_allocation);
1676 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1677 maximum_allocation);
1678 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1679 total_allocation);
1680 fprintf(STDERR, " Number of allocations: %10d\n",
1681 num_allocations);
1682#endif
1683 }
1684
1685#ifdef PNGTEST_TIMING
1686 t_stop = (float)clock();
1687 t_misc += (t_stop - t_start);
1688 t_start = t_stop;
1689 fprintf(STDERR, " CPU time used = %.3f seconds",
1690 (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
1691 fprintf(STDERR, " (decoding %.3f,\n",
1692 t_decode/(float)CLOCKS_PER_SEC);
1693 fprintf(STDERR, " encoding %.3f ,",
1694 t_encode/(float)CLOCKS_PER_SEC);
1695 fprintf(STDERR, " other %.3f seconds)\n\n",
1696 t_misc/(float)CLOCKS_PER_SEC);
1697#endif
1698
1699 if (ierror == 0)
1700 fprintf(STDERR, " libpng passes test\n");
1701 else
1702 fprintf(STDERR, " libpng FAILS test\n");
1703
1704 dummy_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
1705 fprintf(STDERR, " Default limits:\n");
1706#ifdef PNG_SET_USER_LIMITS_SUPPORTED
1707 fprintf(STDERR, " width_max = %lu\n",
1708 (unsigned long) png_get_user_width_max(dummy_ptr));
1709 fprintf(STDERR, " height_max = %lu\n",
1710 (unsigned long) png_get_user_height_max(dummy_ptr));
1711#else
1712 fprintf(STDERR, " width_max = %lu\n",
1713 (unsigned long) PNG_USER_WIDTH_MAX);
1714 fprintf(STDERR, " height_max = %lu\n",
1715 (unsigned long) PNG_USER_HEIGHT_MAX);
1716#endif /* PNG_SET_USER_LIMITS_SUPPORTED */
1717 if (PNG_USER_CHUNK_CACHE_MAX == 0)
1718 fprintf(STDERR, " cache_max = unlimited\n");
1719 else
1720 fprintf(STDERR, " cache_max = %lu\n",
1721 (unsigned long) PNG_USER_CHUNK_CACHE_MAX);
1722 if (PNG_USER_CHUNK_MALLOC_MAX == 0)
1723 fprintf(STDERR, " malloc_max = unlimited\n");
1724 else
1725 fprintf(STDERR, " malloc_max = %lu\n",
1726 (unsigned long) PNG_USER_CHUNK_MALLOC_MAX);
1727 png_destroy_read_struct(&dummy_ptr, NULL, NULL);
1728
1729 return (int)(ierror != 0);
1730}
1731
1732/* Generate a compiler error if there is an old png.h in the search path. */
1733typedef version_1_2_53 your_png_h_is_not_version_1_2_53;
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