2
/* pngtest.c - a simple test program to test libpng
4
* libpng 1.2.7 - September 12, 2004
5
* For conditions of distribution and use, see copyright notice in png.h
6
* Copyright (c) 1998-2004 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.)
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
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.
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 ..."
33
#if defined(_WIN32_WCE)
35
__error__ (f|w)printf functions are not supported on old WindowsCE.;
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)
48
# define READFILE(file, data, length, check) \
49
check=(png_size_t)fread(data,(png_size_t)1,length,file)
50
# define WRITEFILE(file, data, length, check) \
51
check=(png_size_t)fwrite(data,(png_size_t)1, length, file)
52
# define FCLOSE(file) fclose(file)
55
#if defined(PNG_NO_STDIO)
56
# if defined(_WIN32_WCE)
57
typedef HANDLE png_FILE_p;
59
typedef FILE * png_FILE_p;
63
/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
69
# define SINGLE_ROWBUF_ALLOC /* makes buffer overruns easier to nail */
73
#define PNGTEST_TIMING
76
#ifdef PNG_NO_FLOATING_POINT_SUPPORTED
81
static float t_start, t_stop, t_decode, t_encode, t_misc;
85
/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
87
# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
91
static float t_start, t_stop, t_decode, t_encode, t_misc;
92
#if !defined(PNG_tIME_SUPPORTED)
97
#if defined(PNG_TIME_RFC1123_SUPPORTED)
98
static int tIME_chunk_present=0;
99
static char tIME_string[30] = "no tIME chunk present in file";
102
static int verbose = 0;
104
int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
110
/* defined so I can write to a file on gui/windowing platforms */
111
/* #define STDERR stderr */
112
#define STDERR stdout /* for DOS */
114
/* example of using row callbacks to make a simple progress meter */
115
static int status_pass=1;
116
static int status_dots_requested=0;
117
static int status_dots=1;
123
read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
128
read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
130
if(png_ptr == NULL || row_number > PNG_UINT_31_MAX) return;
131
if(status_pass != pass)
133
fprintf(stdout,"\n Pass %d: ",pass);
140
fprintf(stdout, "\n ");
143
fprintf(stdout, "r");
150
write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
155
write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
157
if(png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) return;
158
fprintf(stdout, "w");
162
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
163
/* Example of using user transform callback (we don't transform anything,
164
but merely examine the row filters. We set this to 256 rather than
165
5 in case illegal filter values are present.) */
166
static png_uint_32 filters_used[256];
171
count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
176
count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
178
if(png_ptr != NULL && row_info != NULL)
179
++filters_used[*(data-1)];
183
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
184
/* example of using user transform callback (we don't transform anything,
185
but merely count the zero samples) */
187
static png_uint_32 zero_samples;
193
count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
198
count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
201
if(png_ptr == NULL)return;
203
/* contents of row_info:
204
* png_uint_32 width width of row
205
* png_uint_32 rowbytes number of bytes in row
206
* png_byte color_type color type of pixels
207
* png_byte bit_depth bit depth of samples
208
* png_byte channels number of channels (1-4)
209
* png_byte pixel_depth bits per pixel (depth*channels)
213
/* counts the number of zero samples (or zero pixels if color_type is 3 */
215
if(row_info->color_type == 0 || row_info->color_type == 3)
218
png_uint_32 n, nstop;
219
for (n=0, nstop=row_info->width; n<nstop; n++)
221
if(row_info->bit_depth == 1)
223
if(((*dp << pos++ ) & 0x80) == 0) zero_samples++;
230
if(row_info->bit_depth == 2)
232
if(((*dp << (pos+=2)) & 0xc0) == 0) zero_samples++;
239
if(row_info->bit_depth == 4)
241
if(((*dp << (pos+=4)) & 0xf0) == 0) zero_samples++;
248
if(row_info->bit_depth == 8)
249
if(*dp++ == 0) zero_samples++;
250
if(row_info->bit_depth == 16)
252
if((*dp | *(dp+1)) == 0) zero_samples++;
257
else /* other color types */
259
png_uint_32 n, nstop;
261
int color_channels = row_info->channels;
262
if(row_info->color_type > 3)color_channels--;
264
for (n=0, nstop=row_info->width; n<nstop; n++)
266
for (channel = 0; channel < color_channels; channel++)
268
if(row_info->bit_depth == 8)
269
if(*dp++ == 0) zero_samples++;
270
if(row_info->bit_depth == 16)
272
if((*dp | *(dp+1)) == 0) zero_samples++;
276
if(row_info->color_type > 3)
279
if(row_info->bit_depth == 16)dp++;
284
#endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
286
static int wrote_question = 0;
288
#if defined(PNG_NO_STDIO)
289
/* START of code to validate stdio-free compilation */
290
/* These copies of the default read/write functions come from pngrio.c and */
291
/* pngwio.c. They allow "don't include stdio" testing of the library. */
292
/* This is the function that does the actual reading of data. If you are
293
not reading from a standard C stream, you should create a replacement
294
read_data function and use it at run time with png_set_read_fn(), rather
295
than changing the library. */
297
#ifndef USE_FAR_KEYWORD
299
pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
303
/* fread() returns 0 on error, so it is OK to store this in a png_size_t
304
* instead of an int, which is what fread() actually returns.
306
READFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
310
png_error(png_ptr, "Read Error!");
314
/* this is the model-independent version. Since the standard I/O library
315
can't handle far buffers in the medium and small models, we have to copy
319
#define NEAR_BUF_SIZE 1024
320
#define MIN(a,b) (a <= b ? a : b)
323
pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
329
/* Check if data really is near. If so, use usual code. */
330
n_data = (png_byte *)CVT_PTR_NOCHECK(data);
331
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
332
if ((png_bytep)n_data == data)
334
READFILE(io_ptr, n_data, length, check);
338
png_byte buf[NEAR_BUF_SIZE];
339
png_size_t read, remaining, err;
344
read = MIN(NEAR_BUF_SIZE, remaining);
345
READFILE(io_ptr, buf, 1, err);
346
png_memcpy(data, buf, read); /* copy far buffer to near buffer */
354
while (remaining != 0);
358
png_error(png_ptr, "read Error");
361
#endif /* USE_FAR_KEYWORD */
363
#if defined(PNG_WRITE_FLUSH_SUPPORTED)
365
pngtest_flush(png_structp png_ptr)
367
#if !defined(_WIN32_WCE)
369
io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
376
/* This is the function that does the actual writing of data. If you are
377
not writing to a standard C stream, you should create a replacement
378
write_data function and use it at run time with png_set_write_fn(), rather
379
than changing the library. */
380
#ifndef USE_FAR_KEYWORD
382
pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
386
WRITEFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
389
png_error(png_ptr, "Write Error");
393
/* this is the model-independent version. Since the standard I/O library
394
can't handle far buffers in the medium and small models, we have to copy
398
#define NEAR_BUF_SIZE 1024
399
#define MIN(a,b) (a <= b ? a : b)
402
pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
405
png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
408
/* Check if data really is near. If so, use usual code. */
409
near_data = (png_byte *)CVT_PTR_NOCHECK(data);
410
io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
411
if ((png_bytep)near_data == data)
413
WRITEFILE(io_ptr, near_data, length, check);
417
png_byte buf[NEAR_BUF_SIZE];
418
png_size_t written, remaining, err;
423
written = MIN(NEAR_BUF_SIZE, remaining);
424
png_memcpy(buf, data, written); /* copy far buffer to near buffer */
425
WRITEFILE(io_ptr, buf, written, err);
431
remaining -= written;
433
while (remaining != 0);
437
png_error(png_ptr, "Write Error");
441
#endif /* USE_FAR_KEYWORD */
443
/* This function is called when there is a warning, but the library thinks
444
* it can continue anyway. Replacement functions don't have to do anything
445
* here if you don't want to. In the default configuration, png_ptr is
446
* not used, but it is passed in case it may be useful.
449
pngtest_warning(png_structp png_ptr, png_const_charp message)
451
PNG_CONST char *name = "UNKNOWN (ERROR!)";
452
if (png_ptr != NULL && png_ptr->error_ptr != NULL)
453
name = png_ptr->error_ptr;
454
fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
457
/* This is the default error handling function. Note that replacements for
458
* this function MUST NOT RETURN, or the program will likely crash. This
459
* function is used by default, or if the program supplies NULL for the
460
* error function pointer in png_set_error_fn().
463
pngtest_error(png_structp png_ptr, png_const_charp message)
465
pngtest_warning(png_ptr, message);
466
/* We can return because png_error calls the default handler, which is
467
* actually OK in this case. */
469
#endif /* PNG_NO_STDIO */
470
/* END of code to validate stdio-free compilation */
472
/* START of code to validate memory allocation and deallocation */
473
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
475
/* Allocate memory. For reasonable files, size should never exceed
476
64K. However, zlib may allocate more then 64K if you don't tell
477
it not to. See zconf.h and png.h for more information. zlib does
478
need to allocate exactly 64K, so whatever you call here must
479
have the ability to do that.
481
This piece of code can be compiled to validate max 64K allocations
482
by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. */
483
typedef struct memory_information
487
struct memory_information FAR *next;
488
} memory_information;
489
typedef memory_information FAR *memory_infop;
491
static memory_infop pinformation = NULL;
492
static int current_allocation = 0;
493
static int maximum_allocation = 0;
494
static int total_allocation = 0;
495
static int num_allocations = 0;
497
png_voidp png_debug_malloc PNGARG((png_structp png_ptr, png_uint_32 size));
498
void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
501
png_debug_malloc(png_structp png_ptr, png_uint_32 size)
504
/* png_malloc has already tested for NULL; png_create_struct calls
505
png_debug_malloc directly, with png_ptr == NULL which is OK */
510
/* This calls the library allocator twice, once to get the requested
511
buffer and once to get a new free list entry. */
513
/* Disable malloc_fn and free_fn */
515
png_set_mem_fn(png_ptr, NULL, NULL, NULL);
516
pinfo = (memory_infop)png_malloc(png_ptr,
517
(png_uint_32)png_sizeof (*pinfo));
519
current_allocation += size;
520
total_allocation += size;
522
if (current_allocation > maximum_allocation)
523
maximum_allocation = current_allocation;
524
pinfo->pointer = (png_voidp)png_malloc(png_ptr, size);
525
/* Restore malloc_fn and free_fn */
526
png_set_mem_fn(png_ptr, png_voidp_NULL, (png_malloc_ptr)png_debug_malloc,
527
(png_free_ptr)png_debug_free);
528
if (size != 0 && pinfo->pointer == NULL)
530
current_allocation -= size;
531
total_allocation -= size;
533
"out of memory in pngtest->png_debug_malloc.");
535
pinfo->next = pinformation;
536
pinformation = pinfo;
537
/* Make sure the caller isn't assuming zeroed memory. */
538
png_memset(pinfo->pointer, 0xdd, pinfo->size);
540
printf("png_malloc %lu bytes at %x\n",size,pinfo->pointer);
541
assert(pinfo->size != 12345678);
542
return (png_voidp)(pinfo->pointer);
546
/* Free a pointer. It is removed from the list at the same time. */
548
png_debug_free(png_structp png_ptr, png_voidp ptr)
551
fprintf(STDERR, "NULL pointer to png_debug_free.\n");
554
#if 0 /* This happens all the time. */
555
fprintf(STDERR, "WARNING: freeing NULL pointer\n");
560
/* Unlink the element from the list. */
562
memory_infop FAR *ppinfo = &pinformation;
565
memory_infop pinfo = *ppinfo;
566
if (pinfo->pointer == ptr)
568
*ppinfo = pinfo->next;
569
current_allocation -= pinfo->size;
570
if (current_allocation < 0)
571
fprintf(STDERR, "Duplicate free of memory\n");
572
/* We must free the list element too, but first kill
573
the memory that is to be freed. */
574
png_memset(ptr, 0x55, pinfo->size);
575
png_free_default(png_ptr, pinfo);
579
if (pinfo->next == NULL)
581
fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
584
ppinfo = &pinfo->next;
588
/* Finally free the data. */
590
printf("Freeing %x\n",ptr);
591
png_free_default(png_ptr, ptr);
594
#endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
595
/* END of code to test memory allocation/deallocation */
599
test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
601
static png_FILE_p fpin;
602
static png_FILE_p fpout; /* "static" prevents setjmp corruption */
603
png_structp read_ptr;
604
png_infop read_info_ptr, end_info_ptr;
605
#ifdef PNG_WRITE_SUPPORTED
606
png_structp write_ptr;
607
png_infop write_info_ptr;
608
png_infop write_end_info_ptr;
610
png_structp write_ptr = NULL;
611
png_infop write_info_ptr = NULL;
612
png_infop write_end_info_ptr = NULL;
616
png_uint_32 width, height;
618
int bit_depth, color_type;
619
#ifdef PNG_SETJMP_SUPPORTED
620
#ifdef USE_FAR_KEYWORD
625
#if defined(_WIN32_WCE)
626
TCHAR path[MAX_PATH];
628
char inbuf[256], outbuf[256];
632
#if defined(_WIN32_WCE)
633
MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
634
if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
636
if ((fpin = fopen(inname, "rb")) == NULL)
639
fprintf(STDERR, "Could not find input file %s\n", inname);
643
#if defined(_WIN32_WCE)
644
MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
645
if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL)) == INVALID_HANDLE_VALUE)
647
if ((fpout = fopen(outname, "wb")) == NULL)
650
fprintf(STDERR, "Could not open output file %s\n", outname);
655
png_debug(0, "Allocating read and write structures\n");
656
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
657
read_ptr = png_create_read_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
658
png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
659
(png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
661
read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
662
png_error_ptr_NULL, png_error_ptr_NULL);
664
#if defined(PNG_NO_STDIO)
665
png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
668
#ifdef PNG_WRITE_SUPPORTED
669
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
670
write_ptr = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
671
png_error_ptr_NULL, png_error_ptr_NULL, png_voidp_NULL,
672
(png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
674
write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, png_voidp_NULL,
675
png_error_ptr_NULL, png_error_ptr_NULL);
677
#if defined(PNG_NO_STDIO)
678
png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
682
png_debug(0, "Allocating read_info, write_info and end_info structures\n");
683
read_info_ptr = png_create_info_struct(read_ptr);
684
end_info_ptr = png_create_info_struct(read_ptr);
685
#ifdef PNG_WRITE_SUPPORTED
686
write_info_ptr = png_create_info_struct(write_ptr);
687
write_end_info_ptr = png_create_info_struct(write_ptr);
690
#ifdef PNG_SETJMP_SUPPORTED
691
png_debug(0, "Setting jmpbuf for read struct\n");
692
#ifdef USE_FAR_KEYWORD
695
if (setjmp(png_jmpbuf(read_ptr)))
698
fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
700
png_free(read_ptr, row_buf);
701
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
702
#ifdef PNG_WRITE_SUPPORTED
703
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
704
png_destroy_write_struct(&write_ptr, &write_info_ptr);
710
#ifdef USE_FAR_KEYWORD
711
png_memcpy(png_jmpbuf(read_ptr),jmpbuf,png_sizeof(jmp_buf));
714
#ifdef PNG_WRITE_SUPPORTED
715
png_debug(0, "Setting jmpbuf for write struct\n");
716
#ifdef USE_FAR_KEYWORD
719
if (setjmp(png_jmpbuf(write_ptr)))
722
fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
723
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
724
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
725
#ifdef PNG_WRITE_SUPPORTED
726
png_destroy_write_struct(&write_ptr, &write_info_ptr);
732
#ifdef USE_FAR_KEYWORD
733
png_memcpy(png_jmpbuf(write_ptr),jmpbuf,png_sizeof(jmp_buf));
738
png_debug(0, "Initializing input and output streams\n");
739
#if !defined(PNG_NO_STDIO)
740
png_init_io(read_ptr, fpin);
741
# ifdef PNG_WRITE_SUPPORTED
742
png_init_io(write_ptr, fpout);
745
png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
746
# ifdef PNG_WRITE_SUPPORTED
747
png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
748
# if defined(PNG_WRITE_FLUSH_SUPPORTED)
755
if(status_dots_requested == 1)
757
#ifdef PNG_WRITE_SUPPORTED
758
png_set_write_status_fn(write_ptr, write_row_callback);
760
png_set_read_status_fn(read_ptr, read_row_callback);
764
#ifdef PNG_WRITE_SUPPORTED
765
png_set_write_status_fn(write_ptr, png_write_status_ptr_NULL);
767
png_set_read_status_fn(read_ptr, png_read_status_ptr_NULL);
770
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
775
png_set_read_user_transform_fn(read_ptr, count_filters);
778
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
780
png_set_write_user_transform_fn(write_ptr, count_zero_samples);
783
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
784
# ifndef PNG_HANDLE_CHUNK_ALWAYS
785
# define PNG_HANDLE_CHUNK_ALWAYS 3
787
png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
790
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
791
# ifndef PNG_HANDLE_CHUNK_IF_SAFE
792
# define PNG_HANDLE_CHUNK_IF_SAFE 2
794
png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE,
798
png_debug(0, "Reading info struct\n");
799
png_read_info(read_ptr, read_info_ptr);
801
png_debug(0, "Transferring info struct\n");
803
int interlace_type, compression_type, filter_type;
805
if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
806
&color_type, &interlace_type, &compression_type, &filter_type))
808
png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
809
#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
810
color_type, interlace_type, compression_type, filter_type);
812
color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
816
#if defined(PNG_FIXED_POINT_SUPPORTED)
817
#if defined(PNG_cHRM_SUPPORTED)
819
png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
821
if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
822
&red_y, &green_x, &green_y, &blue_x, &blue_y))
824
png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
825
red_y, green_x, green_y, blue_x, blue_y);
829
#if defined(PNG_gAMA_SUPPORTED)
831
png_fixed_point gamma;
833
if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
835
png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
839
#else /* Use floating point versions */
840
#if defined(PNG_FLOATING_POINT_SUPPORTED)
841
#if defined(PNG_cHRM_SUPPORTED)
843
double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
845
if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
846
&red_y, &green_x, &green_y, &blue_x, &blue_y))
848
png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
849
red_y, green_x, green_y, blue_x, blue_y);
853
#if defined(PNG_gAMA_SUPPORTED)
857
if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
859
png_set_gAMA(write_ptr, write_info_ptr, gamma);
863
#endif /* floating point */
864
#endif /* fixed point */
865
#if defined(PNG_iCCP_SUPPORTED)
870
int compression_type;
872
if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
875
png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
880
#if defined(PNG_sRGB_SUPPORTED)
884
if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
886
png_set_sRGB(write_ptr, write_info_ptr, intent);
894
if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
896
png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
899
#if defined(PNG_bKGD_SUPPORTED)
901
png_color_16p background;
903
if (png_get_bKGD(read_ptr, read_info_ptr, &background))
905
png_set_bKGD(write_ptr, write_info_ptr, background);
909
#if defined(PNG_hIST_SUPPORTED)
913
if (png_get_hIST(read_ptr, read_info_ptr, &hist))
915
png_set_hIST(write_ptr, write_info_ptr, hist);
919
#if defined(PNG_oFFs_SUPPORTED)
921
png_int_32 offset_x, offset_y;
924
if (png_get_oFFs(read_ptr, read_info_ptr,&offset_x,&offset_y,&unit_type))
926
png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
930
#if defined(PNG_pCAL_SUPPORTED)
932
png_charp purpose, units;
937
if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
938
&nparams, &units, ¶ms))
940
png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
941
nparams, units, params);
945
#if defined(PNG_pHYs_SUPPORTED)
947
png_uint_32 res_x, res_y;
950
if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
952
png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
956
#if defined(PNG_sBIT_SUPPORTED)
958
png_color_8p sig_bit;
960
if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
962
png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
966
#if defined(PNG_sCAL_SUPPORTED)
967
#ifdef PNG_FLOATING_POINT_SUPPORTED
970
double scal_width, scal_height;
972
if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
975
png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
979
#ifdef PNG_FIXED_POINT_SUPPORTED
982
png_charp scal_width, scal_height;
984
if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
987
png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width, scal_height);
993
#if defined(PNG_TEXT_SUPPORTED)
998
if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
1000
png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks\n", num_text);
1001
png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
1005
#if defined(PNG_tIME_SUPPORTED)
1009
if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
1011
png_set_tIME(write_ptr, write_info_ptr, mod_time);
1012
#if defined(PNG_TIME_RFC1123_SUPPORTED)
1013
/* we have to use png_strcpy instead of "=" because the string
1014
pointed to by png_convert_to_rfc1123() gets free'ed before
1016
png_strcpy(tIME_string,png_convert_to_rfc1123(read_ptr, mod_time));
1017
tIME_chunk_present++;
1018
#endif /* PNG_TIME_RFC1123_SUPPORTED */
1022
#if defined(PNG_tRNS_SUPPORTED)
1026
png_color_16p trans_values;
1028
if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
1031
png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
1036
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1038
png_unknown_chunkp unknowns;
1039
int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
1044
png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
1046
/* copy the locations from the read_info_ptr. The automatically
1047
generated locations in write_info_ptr are wrong because we
1048
haven't written anything yet */
1049
for (i = 0; i < (png_size_t)num_unknowns; i++)
1050
png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
1051
unknowns[i].location);
1056
#ifdef PNG_WRITE_SUPPORTED
1057
png_debug(0, "\nWriting info struct\n");
1059
/* If we wanted, we could write info in two steps:
1060
png_write_info_before_PLTE(write_ptr, write_info_ptr);
1062
png_write_info(write_ptr, write_info_ptr);
1065
#ifdef SINGLE_ROWBUF_ALLOC
1066
png_debug(0, "\nAllocating row buffer...");
1067
row_buf = (png_bytep)png_malloc(read_ptr,
1068
png_get_rowbytes(read_ptr, read_info_ptr));
1069
png_debug1(0, "0x%08lx\n\n", (unsigned long)row_buf);
1070
#endif /* SINGLE_ROWBUF_ALLOC */
1071
png_debug(0, "Writing row data\n");
1073
#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
1074
defined(PNG_WRITE_INTERLACING_SUPPORTED)
1075
num_pass = png_set_interlace_handling(read_ptr);
1076
# ifdef PNG_WRITE_SUPPORTED
1077
png_set_interlace_handling(write_ptr);
1083
#ifdef PNGTEST_TIMING
1084
t_stop = (float)clock();
1085
t_misc += (t_stop - t_start);
1088
for (pass = 0; pass < num_pass; pass++)
1090
png_debug1(0, "Writing row data for pass %d\n",pass);
1091
for (y = 0; y < height; y++)
1093
#ifndef SINGLE_ROWBUF_ALLOC
1094
png_debug2(0, "\nAllocating row buffer (pass %d, y = %ld)...", pass,y);
1095
row_buf = (png_bytep)png_malloc(read_ptr,
1096
png_get_rowbytes(read_ptr, read_info_ptr));
1097
png_debug2(0, "0x%08lx (%ld bytes)\n", (unsigned long)row_buf,
1098
png_get_rowbytes(read_ptr, read_info_ptr));
1099
#endif /* !SINGLE_ROWBUF_ALLOC */
1100
png_read_rows(read_ptr, (png_bytepp)&row_buf, png_bytepp_NULL, 1);
1102
#ifdef PNG_WRITE_SUPPORTED
1103
#ifdef PNGTEST_TIMING
1104
t_stop = (float)clock();
1105
t_decode += (t_stop - t_start);
1108
png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
1109
#ifdef PNGTEST_TIMING
1110
t_stop = (float)clock();
1111
t_encode += (t_stop - t_start);
1114
#endif /* PNG_WRITE_SUPPORTED */
1116
#ifndef SINGLE_ROWBUF_ALLOC
1117
png_debug2(0, "Freeing row buffer (pass %d, y = %ld)\n\n", pass, y);
1118
png_free(read_ptr, row_buf);
1119
#endif /* !SINGLE_ROWBUF_ALLOC */
1123
#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
1124
png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
1126
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1127
png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
1130
png_debug(0, "Reading and writing end_info data\n");
1132
png_read_end(read_ptr, end_info_ptr);
1133
#if defined(PNG_TEXT_SUPPORTED)
1138
if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
1140
png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks\n", num_text);
1141
png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
1145
#if defined(PNG_tIME_SUPPORTED)
1149
if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
1151
png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
1152
#if defined(PNG_TIME_RFC1123_SUPPORTED)
1153
/* we have to use png_strcpy instead of "=" because the string
1154
pointed to by png_convert_to_rfc1123() gets free'ed before
1156
png_strcpy(tIME_string,png_convert_to_rfc1123(read_ptr, mod_time));
1157
tIME_chunk_present++;
1158
#endif /* PNG_TIME_RFC1123_SUPPORTED */
1162
#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
1164
png_unknown_chunkp unknowns;
1166
num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
1171
png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
1173
/* copy the locations from the read_info_ptr. The automatically
1174
generated locations in write_end_info_ptr are wrong because we
1175
haven't written the end_info yet */
1176
for (i = 0; i < (png_size_t)num_unknowns; i++)
1177
png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
1178
unknowns[i].location);
1182
#ifdef PNG_WRITE_SUPPORTED
1183
png_write_end(write_ptr, write_end_info_ptr);
1186
#ifdef PNG_EASY_ACCESS_SUPPORTED
1189
png_uint_32 iwidth, iheight;
1190
iwidth = png_get_image_width(write_ptr, write_info_ptr);
1191
iheight = png_get_image_height(write_ptr, write_info_ptr);
1192
fprintf(STDERR, "Image width = %lu, height = %lu\n",
1197
png_debug(0, "Destroying data structs\n");
1198
#ifdef SINGLE_ROWBUF_ALLOC
1199
png_debug(1, "destroying row_buf for read_ptr\n");
1200
png_free(read_ptr, row_buf);
1202
#endif /* SINGLE_ROWBUF_ALLOC */
1203
png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr\n");
1204
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
1205
#ifdef PNG_WRITE_SUPPORTED
1206
png_debug(1, "destroying write_end_info_ptr\n");
1207
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
1208
png_debug(1, "destroying write_ptr, write_info_ptr\n");
1209
png_destroy_write_struct(&write_ptr, &write_info_ptr);
1211
png_debug(0, "Destruction complete.\n");
1216
png_debug(0, "Opening files for comparison\n");
1217
#if defined(_WIN32_WCE)
1218
MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
1219
if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
1221
if ((fpin = fopen(inname, "rb")) == NULL)
1224
fprintf(STDERR, "Could not find file %s\n", inname);
1228
#if defined(_WIN32_WCE)
1229
MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
1230
if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
1232
if ((fpout = fopen(outname, "rb")) == NULL)
1235
fprintf(STDERR, "Could not find file %s\n", outname);
1242
png_size_t num_in, num_out;
1244
READFILE(fpin, inbuf, 1, num_in);
1245
READFILE(fpout, outbuf, 1, num_out);
1247
if (num_in != num_out)
1249
fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
1251
if(wrote_question == 0)
1254
" Was %s written with the same maximum IDAT chunk size (%d bytes),",
1255
inname,PNG_ZBUF_SIZE);
1257
"\n filtering heuristic (libpng default), compression");
1259
" level (zlib default),\n and zlib version (%s)?\n\n",
1271
if (png_memcmp(inbuf, outbuf, num_in))
1273
fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
1274
if(wrote_question == 0)
1277
" Was %s written with the same maximum IDAT chunk size (%d bytes),",
1278
inname,PNG_ZBUF_SIZE);
1280
"\n filtering heuristic (libpng default), compression");
1282
" level (zlib default),\n and zlib version (%s)?\n\n",
1298
/* input and output filenames */
1300
static PNG_CONST char *inname = "pngtest/png";
1301
static PNG_CONST char *outname = "pngout/png";
1303
static PNG_CONST char *inname = "pngtest.png";
1304
static PNG_CONST char *outname = "pngout.png";
1308
main(int argc, char *argv[])
1313
fprintf(STDERR, "Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
1314
fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
1315
fprintf(STDERR,"%s",png_get_copyright(NULL));
1316
/* Show the version of libpng used in building the library */
1317
fprintf(STDERR," library (%lu):%s", png_access_version_number(),
1318
png_get_header_version(NULL));
1319
/* Show the version of libpng used in building the application */
1320
fprintf(STDERR," pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
1321
PNG_HEADER_VERSION_STRING);
1322
fprintf(STDERR," png_sizeof(png_struct)=%ld, png_sizeof(png_info)=%ld\n",
1323
(long)png_sizeof(png_struct), (long)png_sizeof(png_info));
1325
/* Do some consistency checking on the memory allocation settings, I'm
1326
not sure this matters, but it is nice to know, the first of these
1327
tests should be impossible because of the way the macros are set
1329
#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
1330
fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
1332
/* I think the following can happen. */
1333
#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
1334
fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
1337
if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
1340
"Warning: versions are different between png.h and png.c\n");
1341
fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
1342
fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
1348
if (strcmp(argv[1], "-m") == 0)
1351
status_dots_requested = 0;
1353
else if (strcmp(argv[1], "-mv") == 0 ||
1354
strcmp(argv[1], "-vm") == 0 )
1358
status_dots_requested = 1;
1360
else if (strcmp(argv[1], "-v") == 0)
1363
status_dots_requested = 1;
1369
status_dots_requested = 0;
1373
if (!multiple && argc == 3+verbose)
1374
outname = argv[2+verbose];
1376
if ((!multiple && argc > 3+verbose) || (multiple && argc < 2))
1379
"usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
1382
" reads/writes one PNG file (without -m) or multiple files (-m)\n");
1384
" with -m %s is used as a temporary file\n", outname);
1391
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1392
int allocation_now = current_allocation;
1394
for (i=2; i<argc; ++i)
1396
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1400
fprintf(STDERR, "Testing %s:",argv[i]);
1401
kerror = test_one_file(argv[i], outname);
1404
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
1405
fprintf(STDERR, "\n PASS (%lu zero samples)\n",zero_samples);
1407
fprintf(STDERR, " PASS\n");
1409
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1410
for (k=0; k<256; k++)
1412
fprintf(STDERR, " Filter %d was used %lu times\n",
1415
#if defined(PNG_TIME_RFC1123_SUPPORTED)
1416
if(tIME_chunk_present != 0)
1417
fprintf(STDERR, " tIME = %s\n",tIME_string);
1418
tIME_chunk_present = 0;
1419
#endif /* PNG_TIME_RFC1123_SUPPORTED */
1423
fprintf(STDERR, " FAIL\n");
1426
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1427
if (allocation_now != current_allocation)
1428
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1429
current_allocation-allocation_now);
1430
if (current_allocation != 0)
1432
memory_infop pinfo = pinformation;
1434
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1435
current_allocation);
1436
while (pinfo != NULL)
1438
fprintf(STDERR, " %lu bytes at %x\n", pinfo->size,
1439
(unsigned int) pinfo->pointer);
1440
pinfo = pinfo->next;
1445
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1446
fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1447
current_allocation);
1448
fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1449
maximum_allocation);
1450
fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1452
fprintf(STDERR, " Number of allocations: %10d\n",
1462
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1463
int allocation_now = current_allocation;
1465
if (i == 1) status_dots_requested = 1;
1466
else if(verbose == 0)status_dots_requested = 0;
1467
if (i == 0 || verbose == 1 || ierror != 0)
1468
fprintf(STDERR, "Testing %s:",inname);
1469
kerror = test_one_file(inname, outname);
1472
if(verbose == 1 || i == 2)
1474
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1477
#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
1478
fprintf(STDERR, "\n PASS (%lu zero samples)\n",zero_samples);
1480
fprintf(STDERR, " PASS\n");
1482
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
1483
for (k=0; k<256; k++)
1485
fprintf(STDERR, " Filter %d was used %lu times\n",
1488
#if defined(PNG_TIME_RFC1123_SUPPORTED)
1489
if(tIME_chunk_present != 0)
1490
fprintf(STDERR, " tIME = %s\n",tIME_string);
1491
#endif /* PNG_TIME_RFC1123_SUPPORTED */
1496
if(verbose == 0 && i != 2)
1497
fprintf(STDERR, "Testing %s:",inname);
1498
fprintf(STDERR, " FAIL\n");
1501
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1502
if (allocation_now != current_allocation)
1503
fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1504
current_allocation-allocation_now);
1505
if (current_allocation != 0)
1507
memory_infop pinfo = pinformation;
1509
fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1510
current_allocation);
1511
while (pinfo != NULL)
1513
fprintf(STDERR," %lu bytes at %x\n",
1514
pinfo->size, (unsigned int)pinfo->pointer);
1515
pinfo = pinfo->next;
1520
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1521
fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1522
current_allocation);
1523
fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1524
maximum_allocation);
1525
fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1527
fprintf(STDERR, " Number of allocations: %10d\n",
1532
#ifdef PNGTEST_TIMING
1533
t_stop = (float)clock();
1534
t_misc += (t_stop - t_start);
1536
fprintf(STDERR," CPU time used = %.3f seconds",
1537
(t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
1538
fprintf(STDERR," (decoding %.3f,\n",
1539
t_decode/(float)CLOCKS_PER_SEC);
1540
fprintf(STDERR," encoding %.3f ,",
1541
t_encode/(float)CLOCKS_PER_SEC);
1542
fprintf(STDERR," other %.3f seconds)\n\n",
1543
t_misc/(float)CLOCKS_PER_SEC);
1547
fprintf(STDERR, "libpng passes test\n");
1549
fprintf(STDERR, "libpng FAILS test\n");
1550
return (int)(ierror != 0);
1553
/* Generate a compiler error if there is an old png.h in the search path. */
1554
typedef version_1_2_7 your_png_h_is_not_version_1_2_7;