source: svn/newcon3bcm2_21bu/dst/dlib/src/PNG/pngtest.c

Last change on this file was 76, checked in by megakiss, 10 years ago

1W 대기전력을 만족시키기 위하여 POWEROFF시 튜너를 Standby 상태로 함
  • Property svn:executable set to *
File size: 33.0 KB
Line 
1/*
2 * $Id: //suprahd/releases/suprahd_163/suprahd_ztvapp640_163/drivers/graphics/PNG/lpng102/pngtest.c#1 $
3 * $Revision: #1 $
4 * $DateTime: 2006/02/24 17:51:46 $
5 * $Change: 42566 $
6 * $Author: pryush.sharma $
7 */
8
9
10/* pngtest.c - a simple test program to test libpng
11 *
12 * libpng 1.0.2 -June 14, 1998
13 * For conditions of distribution and use, see copyright notice in png.h
14 * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
15 * Copyright (c) 1996, 1997 Andreas Dilger
16 * Copyright (c) 1998, Glenn Randers-Pehrson
17 *
18 * This program reads in a PNG image, writes it out again, and then
19 * compares the two files.  If the files are identical, this shows that
20 * the basic chunk handling, filtering, and (de)compression code is working
21 * properly.  It does not currently test all of the transforms, although
22 * it probably should.
23 *
24 * The program will report "FAIL" in certain legitimate cases:
25 * 1) when the compression level or filter selection method is changed.
26 * 2) when the chunk size is not 8K.
27 * 3) unknown ancillary chunks exist in the input file.
28 * 4) others not listed here...
29 * In these cases, it is best to check with another tool such as "pngcheck"
30 * to see what the differences between the two images are.
31 *
32 * If a filename is given on the command-line, then this file is used
33 * for the input, rather than the default "pngtest.png".  This allows
34 * testing a wide variety of files easily.  You can also test a number
35 * of files at once by typing "pngtest -m file1.png file2.png ..."
36 */
37
38#include <stdio.h>
39//#include <string.h>
40
41/* Makes pngtest verbose so we can find problems (needs to be before png.h) */
42#ifndef PNG_DEBUG
43#define PNG_DEBUG 0
44#endif
45
46#include "png.h"
47
48#if defined(PNG_TIME_RFC1123_SUPPORTED)
49static int tIME_chunk_present=0;
50static char tIME_string[30] = "no tIME chunk present in file";
51#endif /* PNG_TIME_RFC1123_SUPPORTED */
52
53int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
54
55#ifdef __TURBOC__
56#include <mem.h>
57#endif
58
59/* defined so I can write to a file on gui/windowing platforms */
60/*  #define STDERR stderr  */
61#define STDERR stdout   /* for DOS */
62
63/* example of using row callbacks to make a simple progress meter */
64static int status_pass=1;
65static int status_dots_requested=0;
66static int status_dots=1;
67
68void
69read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
70{
71    if(png_ptr == NULL || row_number > 0x3fffffffL) return;
72    if(status_pass != pass)
73    {
74       fprintf(stdout,"\n Pass %d: ",pass);
75       status_pass = pass;
76       status_dots = 30;
77    }
78    status_dots--;
79    if(status_dots == 0)
80    {
81       fprintf(stdout, "\n         ");
82       status_dots=30;
83    }
84    fprintf(stdout, "r");
85}
86
87void
88write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
89{
90    if(png_ptr == NULL || row_number > 0x3fffffffL || pass > 7) return;
91    fprintf(stdout, "w");
92}
93
94
95#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
96/* example of using user transform callback (we don't transform anything,
97   but merely count the zero samples) */
98
99static png_uint_32 zero_samples;
100
101void
102count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
103{
104   png_bytep dp = data;
105   if(png_ptr == NULL)return; 
106
107   /* contents of row_info:
108    *  png_uint_32 width      width of row
109    *  png_uint_32 rowbytes   number of bytes in row
110    *  png_byte color_type    color type of pixels
111    *  png_byte bit_depth     bit depth of samples
112    *  png_byte channels      number of channels (1-4)
113    *  png_byte pixel_depth   bits per pixel (depth*channels)
114    */
115
116    /* counts the number of zero samples (or zero pixels if color_type is 3 */
117
118    if(row_info->color_type == 0 || row_info->color_type == 3)
119    {
120       int pos=0;
121       png_uint_32 n, nstop;
122       for (n=0, nstop=row_info->width; n<nstop; n++)
123       {
124          if(row_info->bit_depth == 1)
125          {
126             if(((*dp << pos++ )& 0x80) == 0) zero_samples++;
127             if(pos == 8)
128             {
129                pos = 0;
130                dp++;
131             }
132          }
133          if(row_info->bit_depth == 2)
134          {
135             if(((*dp << (pos+=2))& 0xc0) == 0) zero_samples++;
136             if(pos == 8)
137             {
138                pos = 0;
139                dp++;
140             }
141          }
142          if(row_info->bit_depth == 4)
143          {
144             if(((*dp << (pos+=4))& 0xf0) == 0) zero_samples++;
145             if(pos == 8)
146             {
147                pos = 0;
148                dp++;
149             }
150          }
151          if(row_info->bit_depth == 8)
152             if(*dp++ == 0) zero_samples++;
153          if(row_info->bit_depth == 16)
154          {
155             if((*dp | *(dp+1)) == 0) zero_samples++;
156             dp+=2;
157          }
158       }
159    }
160    else /* other color types */
161    {
162       png_uint_32 n, nstop;
163       int channel;
164       int color_channels = row_info->channels;
165       if(row_info->color_type > 3)color_channels--;
166
167       for (n=0, nstop=row_info->width; n<nstop; n++)
168       {
169          for (channel = 0; channel < color_channels; channel++)
170          {
171             if(row_info->bit_depth == 8)
172                if(*dp++ == 0) zero_samples++;
173             if(row_info->bit_depth == 16)
174             {
175                if((*dp | *(dp+1)) == 0) zero_samples++;
176                dp+=2;
177             }
178          }
179          if(row_info->color_type > 3)
180          {
181             dp++;
182             if(row_info->bit_depth == 16)dp++;
183          }
184       }
185    }
186}
187#endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
188
189static int verbose = 0;
190static int wrote_question = 0;
191
192#if defined(PNG_NO_STDIO)
193/* START of code to validate stdio-free compilation */
194/* These copies of the default read/write functions come from pngrio.c and */
195/* pngwio.c.  They allow "don't include stdio" testing of the library. */
196/* This is the function that does the actual reading of data.  If you are
197   not reading from a standard C stream, you should create a replacement
198   read_data function and use it at run time with png_set_read_fn(), rather
199   than changing the library. */
200#ifndef USE_FAR_KEYWORD
201static void
202png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
203{
204   png_size_t check;
205
206   /* fread() returns 0 on error, so it is OK to store this in a png_size_t
207    * instead of an int, which is what fread() actually returns.
208    */
209   check = (png_size_t)fread(data, (png_size_t)1, length,
210      (FILE *)png_ptr->io_ptr);
211
212   if (check != length)
213   {
214      png_error(png_ptr, "Read Error");
215   }
216}
217#else
218/* this is the model-independent version. Since the standard I/O library
219   can't handle far buffers in the medium and small models, we have to copy
220   the data.
221*/
222 
223#define NEAR_BUF_SIZE 1024
224#define MIN(a,b) (a <= b ? a : b)
225 
226static void
227png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
228{
229   int check;
230   png_byte *n_data;
231   FILE *io_ptr;
232
233   /* Check if data really is near. If so, use usual code. */
234   n_data = (png_byte *)CVT_PTR_NOCHECK(data);
235   io_ptr = (FILE *)CVT_PTR(png_ptr->io_ptr);
236   if ((png_bytep)n_data == data)
237   {
238      check = fread(n_data, 1, length, io_ptr);
239   }
240   else
241   {
242      png_byte buf[NEAR_BUF_SIZE];
243      png_size_t read, remaining, err;
244      check = 0;
245      remaining = length;
246      do
247      {
248         read = MIN(NEAR_BUF_SIZE, remaining);
249         err = fread(buf, (png_size_t)1, read, io_ptr);
250         png_memcpy(data, buf, read); /* copy far buffer to near buffer */
251         if(err != read)
252            break;
253         else
254            check += err;
255         data += read;
256         remaining -= read;
257      }
258      while (remaining != 0);
259   }
260   if (check != length)
261   {
262      png_error(png_ptr, "read Error");
263   }
264}
265#endif /* USE_FAR_KEYWORD */
266
267#if defined(PNG_WRITE_FLUSH_SUPPORTED)
268static void
269png_default_flush(png_structp png_ptr)
270{
271   FILE *io_ptr;
272   io_ptr = (FILE *)CVT_PTR((png_ptr->io_ptr));
273   if (io_ptr != NULL)
274      fflush(io_ptr);
275}
276#endif
277
278/* This is the function that does the actual writing of data.  If you are
279   not writing to a standard C stream, you should create a replacement
280   write_data function and use it at run time with png_set_write_fn(), rather
281   than changing the library. */
282#ifndef USE_FAR_KEYWORD
283static void
284png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
285{
286   png_uint_32 check;
287
288   check = fwrite(data, 1, length, (FILE *)(png_ptr->io_ptr));
289   if (check != length)
290   {
291      png_error(png_ptr, "Write Error");
292   }
293}
294#else
295/* this is the model-independent version. Since the standard I/O library
296   can't handle far buffers in the medium and small models, we have to copy
297   the data.
298*/
299
300#define NEAR_BUF_SIZE 1024
301#define MIN(a,b) (a <= b ? a : b)
302
303static void
304png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
305{
306   png_uint_32 check;
307   png_byte *near_data;  /* Needs to be "png_byte *" instead of "png_bytep" */
308   FILE *io_ptr;
309
310   /* Check if data really is near. If so, use usual code. */
311   near_data = (png_byte *)CVT_PTR_NOCHECK(data);
312   io_ptr = (FILE *)CVT_PTR(png_ptr->io_ptr);
313   if ((png_bytep)near_data == data)
314   {
315      check = fwrite(near_data, 1, length, io_ptr);
316   }
317   else
318   {
319      png_byte buf[NEAR_BUF_SIZE];
320      png_size_t written, remaining, err;
321      check = 0;
322      remaining = length;
323      do
324      {
325         written = MIN(NEAR_BUF_SIZE, remaining);
326         png_memcpy(buf, data, written); /* copy far buffer to near buffer */
327         err = fwrite(buf, 1, written, io_ptr);
328         if (err != written)
329            break;
330         else
331            check += err;
332         data += written;
333         remaining -= written;
334      }
335      while (remaining != 0);
336   }
337   if (check != length)
338   {
339      png_error(png_ptr, "Write Error");
340   }
341}
342
343#endif /* USE_FAR_KEYWORD */
344
345/* This function is called when there is a warning, but the library thinks
346 * it can continue anyway.  Replacement functions don't have to do anything
347 * here if you don't want to.  In the default configuration, png_ptr is
348 * not used, but it is passed in case it may be useful.
349 */
350static void
351png_default_warning(png_structp png_ptr, png_const_charp message)
352{
353   PNG_CONST char *name = "UNKNOWN (ERROR!)";
354   if (png_ptr != NULL && png_ptr->error_ptr != NULL)
355      name = png_ptr->error_ptr;
356   fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
357}
358
359/* This is the default error handling function.  Note that replacements for
360 * this function MUST NOT RETURN, or the program will likely crash.  This
361 * function is used by default, or if the program supplies NULL for the
362 * error function pointer in png_set_error_fn().
363 */
364static void
365png_default_error(png_structp png_ptr, png_const_charp message)
366{
367   png_default_warning(png_ptr, message);
368   /* We can return because png_error calls the default handler, which is
369    * actually OK in this case. */
370}
371#endif /* PNG_NO_STDIO */
372/* END of code to validate stdio-free compilation */
373
374/* START of code to validate memory allocation and deallocation */
375#ifdef PNG_USER_MEM_SUPPORTED
376
377/* Allocate memory.  For reasonable files, size should never exceed
378   64K.  However, zlib may allocate more then 64K if you don't tell
379   it not to.  See zconf.h and png.h for more information.  zlib does
380   need to allocate exactly 64K, so whatever you call here must
381   have the ability to do that.
382
383   This piece of code can be compiled to validate max 64K allocations
384   by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. */
385typedef struct memory_information {
386   png_uint_32                    size;
387   png_voidp                 pointer;
388   struct memory_information FAR *next;
389} memory_information;
390typedef memory_information FAR *memory_infop;
391
392static memory_infop pinformation = NULL;
393static int current_allocation = 0;
394static int maximum_allocation = 0;
395
396extern PNG_EXPORT(png_voidp,png_debug_malloc) PNGARG((png_structp png_ptr,
397   png_uint_32 size));
398extern PNG_EXPORT(void,png_debug_free) PNGARG((png_structp png_ptr,
399   png_voidp ptr));
400
401png_voidp
402png_debug_malloc(png_structp png_ptr, png_uint_32 size) {
403
404   /* png_malloc has already tested for NULL; png_create_struct calls
405      png_debug_malloc directly, with png_ptr == NULL which is OK */
406
407   if (size == 0)
408      return (png_voidp)(NULL);
409
410   /* This calls the library allocator twice, once to get the requested
411      buffer and once to get a new free list entry. */
412   {
413      memory_infop pinfo = png_malloc_default(png_ptr, sizeof *pinfo);
414      pinfo->size = size;
415      current_allocation += size;
416      if (current_allocation > maximum_allocation)
417         maximum_allocation = current_allocation;
418      pinfo->pointer = png_malloc_default(png_ptr, size);
419      pinfo->next = pinformation;
420      pinformation = pinfo;
421      /* Make sure the caller isn't assuming zeroed memory. */
422      png_memset(pinfo->pointer, 0xdd, pinfo->size);
423      return (png_voidp)(pinfo->pointer);
424   }
425}
426
427/* Free a pointer.  It is removed from the list at the same time. */
428void
429png_debug_free(png_structp png_ptr, png_voidp ptr)
430{
431   if (png_ptr == NULL)
432      fprintf(STDERR, "NULL pointer to png_debug_free.\n");
433   if (ptr == 0) {
434#if 0 /* This happens all the time. */
435      fprintf(STDERR, "WARNING: freeing NULL pointer\n");
436#endif
437      return;
438   }
439
440   /* Unlink the element from the list. */
441   {
442      memory_infop FAR *ppinfo = &pinformation;
443      for (;;) {
444         memory_infop pinfo = *ppinfo;
445         if (pinfo->pointer == ptr) {
446            *ppinfo = pinfo->next;
447            current_allocation -= pinfo->size;
448            if (current_allocation < 0)
449               fprintf(STDERR, "Duplicate free of memory\n");
450            /* We must free the list element too, but first kill
451               the memory that is to be freed. */
452            memset(ptr, 0x55, pinfo->size);
453            png_free_default(png_ptr, pinfo);
454            break;
455         }
456         if (pinfo->next == NULL) {
457            fprintf(STDERR, "Pointer %x not found\n", ptr);
458            break;
459         }
460         ppinfo = &pinfo->next;
461      }
462   }
463
464   /* Finally free the data. */
465   png_free_default(png_ptr, ptr);
466}
467#endif /* PNG_USER_MEM_SUPPORTED */
468/* END of code to test memory allocation/deallocation */
469
470/* Test one file */
471int
472test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
473{
474   static FILE *fpin, *fpout;  /* "static" prevents setjmp corruption */
475   png_structp read_ptr, write_ptr;
476   png_infop read_info_ptr, write_info_ptr, end_info_ptr;
477   png_bytep row_buf;
478   png_uint_32 y;
479   png_uint_32 width, height;
480   int num_pass, pass;
481   int bit_depth, color_type;
482#ifdef USE_FAR_KEYWORD
483   jmp_buf jmpbuf;
484#endif   
485   
486   char inbuf[256], outbuf[256];
487
488   row_buf = (png_bytep)NULL;
489
490   if ((fpin = fopen(inname, "rb")) == NULL)
491   {
492      fprintf(STDERR, "Could not find input file %s\n", inname);
493      return (1);
494   }
495
496   if ((fpout = fopen(outname, "wb")) == NULL)
497   {
498      fprintf(STDERR, "Could not open output file %s\n", outname);
499      fclose(fpin);
500      return (1);
501   }
502
503   png_debug(0, "Allocating read and write structures\n");
504#ifdef PNG_USER_MEM_SUPPORTED
505   read_ptr = png_create_read_struct_2(PNG_LIBPNG_VER_STRING, (png_voidp)NULL,
506      (png_error_ptr)NULL, (png_error_ptr)NULL, (png_voidp)NULL,
507      (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
508#else
509   read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL,
510      (png_error_ptr)NULL, (png_error_ptr)NULL);
511#endif
512#if defined(PNG_NO_STDIO)
513   png_set_error_fn(read_ptr, (png_voidp)inname, png_default_error,
514       png_default_warning);
515#endif
516#ifdef PNG_USER_MEM_SUPPORTED
517   write_ptr = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, (png_voidp)NULL,
518      (png_error_ptr)NULL, (png_error_ptr)NULL, (png_voidp)NULL,
519      (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
520#else
521   write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL,
522      (png_error_ptr)NULL, (png_error_ptr)NULL);
523#endif
524#if defined(PNG_NO_STDIO)
525   png_set_error_fn(write_ptr, (png_voidp)inname, png_default_error,
526       png_default_warning);
527#endif
528   png_debug(0, "Allocating read_info, write_info and end_info structures\n");
529   read_info_ptr = png_create_info_struct(read_ptr);
530   write_info_ptr = png_create_info_struct(write_ptr);
531   end_info_ptr = png_create_info_struct(read_ptr);
532#ifdef PNG_USER_MEM_SUPPORTED
533#endif
534
535   png_debug(0, "Setting jmpbuf for read struct\n");
536#ifdef USE_FAR_KEYWORD
537   if (setjmp(jmpbuf))
538#else
539   if (setjmp(read_ptr->jmpbuf))
540#endif
541   {
542      fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
543      png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
544      png_destroy_write_struct(&write_ptr, &write_info_ptr);
545      fclose(fpin);
546      fclose(fpout);
547      return (1);
548   }
549
550   png_debug(0, "Setting jmpbuf for write struct\n");
551#ifdef USE_FAR_KEYWORD
552   png_memcpy(read_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf));
553   if (setjmp(jmpbuf))
554#else
555   if (setjmp(write_ptr->jmpbuf))
556#endif
557   {
558      fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
559      png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
560      png_destroy_write_struct(&write_ptr, &write_info_ptr);
561      fclose(fpin);
562      fclose(fpout);
563      return (1);
564   }
565
566#ifdef USE_FAR_KEYWORD
567   png_memcpy(write_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf));
568#endif
569   png_debug(0, "Initializing input and output streams\n");
570#if !defined(PNG_NO_STDIO)
571   png_init_io(read_ptr, fpin);
572   png_init_io(write_ptr, fpout);
573#else
574   png_set_read_fn(read_ptr, (png_voidp)fpin, png_default_read_data);
575   png_set_write_fn(write_ptr, (png_voidp)fpout,  png_default_write_data,
576#if defined(PNG_WRITE_FLUSH_SUPPORTED)
577      png_default_flush);
578#else
579      NULL);
580#endif
581#endif
582   if(status_dots_requested == 1)
583   {
584      png_set_write_status_fn(write_ptr, write_row_callback);
585      png_set_read_status_fn(read_ptr, read_row_callback);
586   }
587   else
588   {
589      png_set_write_status_fn(write_ptr, NULL);
590      png_set_read_status_fn(read_ptr, NULL);
591   }
592
593#  if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
594     zero_samples=0;
595     png_set_write_user_transform_fn(write_ptr, count_zero_samples);
596#  endif
597
598   png_debug(0, "Reading info struct\n");
599   png_read_info(read_ptr, read_info_ptr);
600
601   png_debug(0, "Transferring info struct\n");
602   {
603      int interlace_type, compression_type, filter_type;
604
605      if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
606          &color_type, &interlace_type, &compression_type, &filter_type))
607      {
608         png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
609#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
610            color_type, interlace_type, compression_type, filter_type);
611#else
612            color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
613#endif
614      }
615   }
616#if defined(PNG_READ_bKGD_SUPPORTED) && defined(PNG_WRITE_bKGD_SUPPORTED)
617   {
618      png_color_16p background;
619
620      if (png_get_bKGD(read_ptr, read_info_ptr, &background))
621      {
622         png_set_bKGD(write_ptr, write_info_ptr, background);
623      }
624   }
625#endif
626#if defined(PNG_READ_cHRM_SUPPORTED) && defined(PNG_WRITE_cHRM_SUPPORTED)
627   {
628      double white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
629
630      if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
631         &red_y, &green_x, &green_y, &blue_x, &blue_y))
632      {
633         png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
634            red_y, green_x, green_y, blue_x, blue_y);
635      }
636   }
637#endif
638#if defined(PNG_READ_gAMA_SUPPORTED) && defined(PNG_WRITE_gAMA_SUPPORTED)
639   {
640      double gamma;
641
642      if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
643      {
644         png_set_gAMA(write_ptr, write_info_ptr, gamma);
645      }
646   }
647#endif
648#if defined(PNG_READ_sRGB_SUPPORTED) && defined(PNG_WRITE_sRGB_SUPPORTED)
649   {
650      int intent;
651
652      if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
653      {
654         png_set_sRGB(write_ptr, write_info_ptr, intent);
655      }
656   }
657#endif
658#if defined(PNG_READ_hIST_SUPPORTED) && defined(PNG_WRITE_hIST_SUPPORTED)
659   {
660      png_uint_16p hist;
661
662      if (png_get_hIST(read_ptr, read_info_ptr, &hist))
663      {
664         png_set_hIST(write_ptr, write_info_ptr, hist);
665      }
666   }
667#endif
668#if defined(PNG_READ_oFFs_SUPPORTED) && defined(PNG_WRITE_oFFs_SUPPORTED)
669   {
670      png_uint_32 offset_x, offset_y;
671      int unit_type;
672
673      if (png_get_oFFs(read_ptr, read_info_ptr,&offset_x,&offset_y,&unit_type))
674      {
675         png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
676      }
677   }
678#endif
679#if defined(PNG_READ_pCAL_SUPPORTED) && defined(PNG_WRITE_pCAL_SUPPORTED)
680   {
681      png_charp purpose, units;
682      png_charpp params;
683      png_int_32 X0, X1;
684      int type, nparams;
685
686      if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
687         &nparams, &units, &params))
688      {
689         png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
690            nparams, units, params);
691      }
692   }
693#endif
694#if defined(PNG_READ_pHYs_SUPPORTED) && defined(PNG_WRITE_pHYs_SUPPORTED)
695   {
696      png_uint_32 res_x, res_y;
697      int unit_type;
698
699      if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
700      {
701         png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
702      }
703   }
704#endif
705   {
706      png_colorp palette;
707      int num_palette;
708
709      if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
710      {
711         png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
712      }
713   }
714#if defined(PNG_READ_sBIT_SUPPORTED) && defined(PNG_WRITE_sBIT_SUPPORTED)
715   {
716      png_color_8p sig_bit;
717
718      if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
719      {
720         png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
721      }
722   }
723#endif
724#if (defined(PNG_READ_tEXt_SUPPORTED) && defined(PNG_WRITE_tEXt_SUPPORTED)) || \
725    (defined(PNG_READ_zTXt_SUPPORTED) && defined(PNG_WRITE_zTXt_SUPPORTED))
726   {
727      png_textp text_ptr;
728      int num_text;
729
730      if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
731      {
732         png_debug1(0, "Handling %d tEXt/zTXt chunks\n", num_text);
733         png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
734      }
735   }
736#endif
737#if defined(PNG_READ_tIME_SUPPORTED) && defined(PNG_WRITE_tIME_SUPPORTED)
738   {
739      png_timep mod_time;
740
741      if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
742      {
743         png_set_tIME(write_ptr, write_info_ptr, mod_time);
744      }
745#if defined(PNG_TIME_RFC1123_SUPPORTED)
746      {
747         /* we have to use png_strcpy instead of "=" because the string
748            pointed to by png_convert_to_rfc1123() gets free'ed before
749            we use it */
750         png_strcpy(tIME_string,png_convert_to_rfc1123(read_ptr, mod_time));
751         tIME_chunk_present++;
752      }
753#endif /* PNG_TIME_RFC1123_SUPPORTED */
754   }
755#endif
756#if defined(PNG_READ_tRNS_SUPPORTED) && defined(PNG_WRITE_tRNS_SUPPORTED)
757   {
758      png_bytep trans;
759      int num_trans;
760      png_color_16p trans_values;
761
762      if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
763         &trans_values))
764      {
765         png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
766            trans_values);
767      }
768   }
769#endif
770
771   png_debug(0, "\nWriting info struct\n");
772   png_write_info(write_ptr, write_info_ptr);
773
774   png_debug(0, "\nAllocating row buffer \n");
775   row_buf = (png_bytep)png_malloc(read_ptr, 
776      png_get_rowbytes(read_ptr, read_info_ptr));
777   if (row_buf == NULL)
778   {
779      fprintf(STDERR, "No memory to allocate row buffer\n");
780      png_destroy_read_struct(&read_ptr, &read_info_ptr, (png_infopp)NULL);
781      png_destroy_write_struct(&write_ptr, &write_info_ptr);
782      fclose(fpin);
783      fclose(fpout);
784      return (1);
785   }
786   png_debug(0, "Writing row data\n");
787
788   num_pass = png_set_interlace_handling(read_ptr);
789   png_set_interlace_handling(write_ptr);
790
791   for (pass = 0; pass < num_pass; pass++)
792   {
793      png_debug1(0, "Writing row data for pass %d\n",pass);
794      for (y = 0; y < height; y++)
795      {
796         png_read_rows(read_ptr, (png_bytepp)&row_buf, (png_bytepp)NULL, 1);
797         png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
798      }
799   }
800
801   png_debug(0, "Reading and writing end_info data\n");
802   png_read_end(read_ptr, end_info_ptr);
803   png_write_end(write_ptr, end_info_ptr);
804 
805#ifdef PNG_EASY_ACCESS_SUPPORTED
806   if(verbose)
807   {
808      png_uint_32 iwidth, iheight;
809      iwidth = png_get_image_width(write_ptr, write_info_ptr);
810      iheight = png_get_image_height(write_ptr, write_info_ptr);
811      fprintf(STDERR, "Image width = %lu, height = %lu\n",
812         iwidth, iheight);
813   }
814#endif
815
816   png_debug(0, "Destroying data structs\n");
817   png_free(read_ptr, row_buf);
818   png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
819   png_destroy_write_struct(&write_ptr, &write_info_ptr);
820
821   fclose(fpin);
822   fclose(fpout);
823
824   png_debug(0, "Opening files for comparison\n");
825   if ((fpin = fopen(inname, "rb")) == NULL)
826   {
827      fprintf(STDERR, "Could not find file %s\n", inname);
828      return (1);
829   }
830
831   if ((fpout = fopen(outname, "rb")) == NULL)
832   {
833      fprintf(STDERR, "Could not find file %s\n", outname);
834      fclose(fpin);
835      return (1);
836   }
837
838   for(;;)
839   {
840      png_size_t num_in, num_out;
841
842      num_in = fread(inbuf, 1, 1, fpin);
843      num_out = fread(outbuf, 1, 1, fpout);
844
845      if (num_in != num_out)
846      {
847         fprintf(STDERR, "Files %s and %s are of a different size\n",
848                 inname, outname);
849         if(wrote_question == 0)
850         {
851            fprintf(STDERR,
852              "   Was %s written with the same chunk size (8k),",inname);
853            fprintf(STDERR,
854              " filtering\n   heuristic (libpng default), compression");
855            fprintf(STDERR,
856              " level (zlib default)\n   and zlib version (%s)?\n\n",
857              ZLIB_VERSION);
858            wrote_question=1;
859         }
860         fclose(fpin);
861         fclose(fpout);
862         return (0);
863      }
864
865      if (!num_in)
866         break;
867
868      if (png_memcmp(inbuf, outbuf, num_in))
869      {
870         fprintf(STDERR, "Files %s and %s are different\n", inname, outname);
871         if(wrote_question == 0)
872         {
873            fprintf(STDERR,
874              "   Was %s written with the same chunk size (8k),",inname);
875            fprintf(STDERR,
876              " filtering\n   heuristic (libpng default), compression");
877            fprintf(STDERR,
878              " level (zlib default)\n   and zlib version (%s)?\n\n",
879              ZLIB_VERSION);
880            wrote_question=1;
881         }
882         fclose(fpin);
883         fclose(fpout);
884         return (0);
885      }
886   }
887
888   fclose(fpin);
889   fclose(fpout);
890
891   return (0);
892}
893
894/* input and output filenames */
895#ifdef RISCOS
896PNG_CONST char *inname = "pngtest/png";
897PNG_CONST char *outname = "pngout/png";
898#else
899static PNG_CONST char *inname = "pngtest.png";
900static PNG_CONST char *outname = "pngout.png";
901#endif
902
903int
904main(int argc, char *argv[])
905{
906   int multiple = 0;
907   int ierror = 0;
908
909   fprintf(STDERR, "Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
910   fprintf(STDERR, "   with zlib   version %s\n", ZLIB_VERSION);
911
912   /* Do some consistency checking on the memory allocation settings, I'm
913      not sure this matters, but it is nice to know, the first of these
914      tests should be impossible because of the way the macros are set
915      in pngconf.h */
916#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
917      fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
918#endif
919   /* I think the following can happen. */
920#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
921      fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
922#endif
923
924   if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
925   {
926      fprintf(STDERR,
927         "Warning: versions are different between png.h and png.c\n");
928      fprintf(STDERR, "  png.h version: %s\n", PNG_LIBPNG_VER_STRING);
929      fprintf(STDERR, "  png.c version: %s\n\n", png_libpng_ver);
930      ++ierror;
931   }
932
933   if (argc > 1)
934   {
935      if (strcmp(argv[1], "-m") == 0)
936      {
937         multiple = 1;
938         status_dots_requested = 0;
939      }
940      else if (strcmp(argv[1], "-mv") == 0 ||
941               strcmp(argv[1], "-vm") == 0 )
942      {
943         multiple = 1;
944         verbose = 1;
945         status_dots_requested = 1;
946      }
947      else if (strcmp(argv[1], "-v") == 0)
948      {
949         verbose = 1;
950         status_dots_requested = 1;
951         inname = argv[2];
952      }
953      else
954      {
955         inname = argv[1];
956         status_dots_requested = 0;
957      }
958   }
959
960   if (!multiple && argc == 3+verbose)
961     outname = argv[2+verbose];
962
963   if ((!multiple && argc > 3+verbose) || (multiple && argc < 2))
964   {
965     fprintf(STDERR,
966       "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
967        argv[0], argv[0]);
968     fprintf(STDERR,
969       "  reads/writes one PNG file (without -m) or multiple files (-m)\n");
970     fprintf(STDERR,
971       "  with -m %s is used as a temporary file\n", outname);
972     exit(1);
973   }
974
975   if (multiple)
976   {
977      int i;
978#ifdef PNG_USER_MEM_SUPPORTED
979      int allocation_now = current_allocation;
980#endif
981      for (i=2; i<argc; ++i)
982      {
983         int kerror;
984         fprintf(STDERR, "Testing %s:",argv[i]);
985         kerror = test_one_file(argv[i], outname);
986         if (kerror == 0) 
987         {
988#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
989            fprintf(STDERR, " PASS (%lu zero samples)\n",zero_samples);
990#else
991            fprintf(STDERR, " PASS\n");
992#endif
993#if defined(PNG_TIME_RFC1123_SUPPORTED)
994         if(tIME_chunk_present != 0)
995            fprintf(STDERR, " tIME = %s\n",tIME_string);
996         tIME_chunk_present = 0;
997#endif /* PNG_TIME_RFC1123_SUPPORTED */
998         }
999         else
1000         {
1001            fprintf(STDERR, " FAIL\n");
1002            ierror += kerror;
1003         }
1004#ifdef PNG_USER_MEM_SUPPORTED
1005         if (allocation_now != current_allocation)
1006            fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1007               current_allocation-allocation_now);
1008         if (current_allocation != 0) {
1009            memory_infop pinfo = pinformation;
1010
1011            fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1012               current_allocation);
1013            while (pinfo != NULL) {
1014               fprintf(STDERR, " %d bytes at %x\n", pinfo->size, pinfo->pointer);
1015               pinfo = pinfo->next;
1016               }
1017         }
1018#endif
1019      }
1020#ifdef PNG_USER_MEM_SUPPORTED
1021         fprintf(STDERR, "Maximum memory allocation: %d bytes\n",
1022            maximum_allocation);
1023#endif
1024   }
1025   else
1026   {
1027      int i;
1028      for (i=0; i<3; ++i) {
1029         int kerror;
1030#ifdef PNG_USER_MEM_SUPPORTED
1031         int allocation_now = current_allocation;
1032#endif
1033         if (i == 1) status_dots_requested = 1;
1034         else if(verbose == 0)status_dots_requested = 0;
1035         if (i == 0 || verbose == 1 || ierror != 0)
1036            fprintf(STDERR, "Testing %s:",inname);
1037         kerror = test_one_file(inname, outname);
1038         if(kerror == 0)
1039         {
1040            if(verbose == 1 || i == 2)
1041            {
1042#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
1043                fprintf(STDERR, " PASS (%lu zero samples)\n",zero_samples);
1044#else
1045                fprintf(STDERR, " PASS\n");
1046#endif
1047#if defined(PNG_TIME_RFC1123_SUPPORTED)
1048         if(tIME_chunk_present != 0)
1049            fprintf(STDERR, " tIME = %s\n",tIME_string);
1050#endif /* PNG_TIME_RFC1123_SUPPORTED */
1051            }
1052         }
1053         else
1054         {
1055            if(verbose == 0 && i != 2)
1056               fprintf(STDERR, "Testing %s:",inname);
1057            fprintf(STDERR, " FAIL\n");
1058            ierror += kerror;
1059         }
1060#ifdef PNG_USER_MEM_SUPPORTED
1061         if (allocation_now != current_allocation)
1062             fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1063               current_allocation-allocation_now);
1064         if (current_allocation != 0) {
1065             memory_infop pinfo = pinformation;
1066   
1067             fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1068                current_allocation);
1069             while (pinfo != NULL) {
1070                fprintf(STDERR, " %d bytes at %x\n", pinfo->size, pinfo->pointer);
1071                pinfo = pinfo->next;
1072             }
1073          }
1074#endif
1075       }
1076#ifdef PNG_USER_MEM_SUPPORTED
1077       fprintf(STDERR, "Maximum memory allocation: %d bytes\n",
1078          maximum_allocation);
1079#endif
1080   }
1081
1082   if (ierror == 0)
1083      fprintf(STDERR, "libpng passes test\n");
1084   else
1085      fprintf(STDERR, "libpng FAILS test\n");
1086   return (int)(ierror != 0);
1087}
1088
Note: See TracBrowser for help on using the repository browser.