2 /* pngtest.c - a simple test program to test libpng
4 * Last changed in libpng 1.4.1 [February 25, 2010]
5 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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
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
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.
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 ..."
39 # define FCLOSE(file) fclose(file)
41 #ifndef PNG_STDIO_SUPPORTED
42 typedef FILE * png_FILE_p;
45 /* Makes pngtest verbose so we can find problems (needs to be before png.h) */
51 # define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
55 #define PNGTEST_TIMING
58 #ifndef PNG_FLOATING_POINT_SUPPORTED
63 static float t_start, t_stop, t_decode, t_encode, t_misc;
67 #ifdef PNG_TIME_RFC1123_SUPPORTED
68 #define PNG_tIME_STRING_LENGTH 29
69 static int tIME_chunk_present = 0;
70 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
73 static int verbose = 0;
75 int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
81 /* Defined so I can write to a file on gui/windowing platforms */
82 /* #define STDERR stderr */
83 #define STDERR stdout /* For DOS */
85 /* In case a system header (e.g., on AIX) defined jmpbuf */
90 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
92 # define png_jmpbuf(png_ptr) png_ptr->jmpbuf
95 /* Example of using row callbacks to make a simple progress meter */
96 static int status_pass = 1;
97 static int status_dots_requested = 0;
98 static int status_dots = 1;
101 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
103 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
105 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
107 if (status_pass != pass)
109 fprintf(stdout, "\n Pass %d: ", pass);
114 if (status_dots == 0)
116 fprintf(stdout, "\n ");
119 fprintf(stdout, "r");
123 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass);
125 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
127 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
129 fprintf(stdout, "w");
133 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
134 /* Example of using user transform callback (we don't transform anything,
135 * but merely examine the row filters. We set this to 256 rather than
136 * 5 in case illegal filter values are present.)
138 static png_uint_32 filters_used[256];
140 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data);
142 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
144 if (png_ptr != NULL && row_info != NULL)
145 ++filters_used[*(data - 1)];
149 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
150 /* Example of using user transform callback (we don't transform anything,
151 * but merely count the zero samples)
154 static png_uint_32 zero_samples;
157 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data);
159 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
162 if (png_ptr == NULL)return;
164 /* Contents of row_info:
165 * png_uint_32 width width of row
166 * png_uint_32 rowbytes number of bytes in row
167 * png_byte color_type color type of pixels
168 * png_byte bit_depth bit depth of samples
169 * png_byte channels number of channels (1-4)
170 * png_byte pixel_depth bits per pixel (depth*channels)
173 /* Counts the number of zero samples (or zero pixels if color_type is 3 */
175 if (row_info->color_type == 0 || row_info->color_type == 3)
178 png_uint_32 n, nstop;
179 for (n = 0, nstop=row_info->width; n<nstop; n++)
181 if (row_info->bit_depth == 1)
183 if (((*dp << pos++ ) & 0x80) == 0)
191 if (row_info->bit_depth == 2)
193 if (((*dp << (pos+=2)) & 0xc0) == 0)
201 if (row_info->bit_depth == 4)
203 if (((*dp << (pos+=4)) & 0xf0) == 0)
211 if (row_info->bit_depth == 8)
214 if (row_info->bit_depth == 16)
216 if ((*dp | *(dp+1)) == 0)
222 else /* Other color types */
224 png_uint_32 n, nstop;
226 int color_channels = row_info->channels;
227 if (row_info->color_type > 3)color_channels--;
229 for (n = 0, nstop=row_info->width; n<nstop; n++)
231 for (channel = 0; channel < color_channels; channel++)
233 if (row_info->bit_depth == 8)
236 if (row_info->bit_depth == 16)
238 if ((*dp | *(dp+1)) == 0)
243 if (row_info->color_type > 3)
246 if (row_info->bit_depth == 16)
252 #endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
254 static int wrote_question = 0;
256 #ifndef PNG_STDIO_SUPPORTED
257 /* START of code to validate stdio-free compilation */
258 /* These copies of the default read/write functions come from pngrio.c and
259 * pngwio.c. They allow "don't include stdio" testing of the library.
260 * This is the function that does the actual reading of data. If you are
261 * not reading from a standard C stream, you should create a replacement
262 * read_data function and use it at run time with png_set_read_fn(), rather
263 * than changing the library.
266 #ifndef USE_FAR_KEYWORD
268 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
270 png_size_t check = 0;
273 /* fread() returns 0 on error, so it is OK to store this in a png_size_t
274 * instead of an int, which is what fread() actually returns.
276 io_ptr = png_get_io_ptr(png_ptr);
279 check = fread(data, 1, length, (png_FILE_p)io_ptr);
284 png_error(png_ptr, "Read Error!");
288 /* This is the model-independent version. Since the standard I/O library
289 can't handle far buffers in the medium and small models, we have to copy
293 #define NEAR_BUF_SIZE 1024
294 #define MIN(a,b) (a <= b ? a : b)
297 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
303 /* Check if data really is near. If so, use usual code. */
304 n_data = (png_byte *)CVT_PTR_NOCHECK(data);
305 io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr));
306 if ((png_bytep)n_data == data)
308 check = fread(n_data, 1, length, io_ptr);
312 png_byte buf[NEAR_BUF_SIZE];
313 png_size_t read, remaining, err;
318 read = MIN(NEAR_BUF_SIZE, remaining);
319 err = fread(buf, 1, 1, io_ptr);
320 png_memcpy(data, buf, read); /* Copy far buffer to near buffer */
328 while (remaining != 0);
331 png_error(png_ptr, "read Error");
333 #endif /* USE_FAR_KEYWORD */
335 #ifdef PNG_WRITE_FLUSH_SUPPORTED
337 pngtest_flush(png_structp png_ptr)
339 /* Do nothing; fflush() is said to be just a waste of energy. */
340 png_ptr = png_ptr; /* Stifle compiler warning */
344 /* This is the function that does the actual writing of data. If you are
345 * not writing to a standard C stream, you should create a replacement
346 * write_data function and use it at run time with png_set_write_fn(), rather
347 * than changing the library.
349 #ifndef USE_FAR_KEYWORD
351 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
355 io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr));
357 check = fwrite(data, 1, length, io_ptr);
360 png_error(png_ptr, "Write Error");
364 /* This is the model-independent version. Since the standard I/O library
365 can't handle far buffers in the medium and small models, we have to copy
369 #define NEAR_BUF_SIZE 1024
370 #define MIN(a,b) (a <= b ? a : b)
373 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
376 png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */
379 /* Check if data really is near. If so, use usual code. */
380 near_data = (png_byte *)CVT_PTR_NOCHECK(data);
381 io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
382 if ((png_bytep)near_data == data)
384 check = fwrite(near_data, 1, length, io_ptr);
388 png_byte buf[NEAR_BUF_SIZE];
389 png_size_t written, remaining, err;
394 written = MIN(NEAR_BUF_SIZE, remaining);
395 png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
396 err = fwrite(buf, 1, written, io_ptr);
402 remaining -= written;
404 while (remaining != 0);
408 png_error(png_ptr, "Write Error");
411 #endif /* USE_FAR_KEYWORD */
413 /* This function is called when there is a warning, but the library thinks
414 * it can continue anyway. Replacement functions don't have to do anything
415 * here if you don't want to. In the default configuration, png_ptr is
416 * not used, but it is passed in case it may be useful.
419 pngtest_warning(png_structp png_ptr, png_const_charp message)
421 PNG_CONST char *name = "UNKNOWN (ERROR!)";
423 test = png_get_error_ptr(png_ptr);
425 fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
427 fprintf(STDERR, "%s: libpng warning: %s\n", test, message);
430 /* This is the default error handling function. Note that replacements for
431 * this function MUST NOT RETURN, or the program will likely crash. This
432 * function is used by default, or if the program supplies NULL for the
433 * error function pointer in png_set_error_fn().
436 pngtest_error(png_structp png_ptr, png_const_charp message)
438 pngtest_warning(png_ptr, message);
439 /* We can return because png_error calls the default handler, which is
440 * actually OK in this case.
443 #endif /* !PNG_STDIO_SUPPORTED */
444 /* END of code to validate stdio-free compilation */
446 /* START of code to validate memory allocation and deallocation */
447 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
449 /* Allocate memory. For reasonable files, size should never exceed
450 * 64K. However, zlib may allocate more then 64K if you don't tell
451 * it not to. See zconf.h and png.h for more information. zlib does
452 * need to allocate exactly 64K, so whatever you call here must
453 * have the ability to do that.
455 * This piece of code can be compiled to validate max 64K allocations
456 * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
458 typedef struct memory_information
460 png_alloc_size_t size;
462 struct memory_information FAR *next;
463 } memory_information;
464 typedef memory_information FAR *memory_infop;
466 static memory_infop pinformation = NULL;
467 static int current_allocation = 0;
468 static int maximum_allocation = 0;
469 static int total_allocation = 0;
470 static int num_allocations = 0;
472 png_voidp png_debug_malloc
473 PNGARG((png_structp png_ptr, png_alloc_size_t size));
474 void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
477 png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
480 /* png_malloc has already tested for NULL; png_create_struct calls
481 * png_debug_malloc directly, with png_ptr == NULL which is OK
487 /* This calls the library allocator twice, once to get the requested
488 buffer and once to get a new free list entry. */
490 /* Disable malloc_fn and free_fn */
492 png_set_mem_fn(png_ptr, NULL, NULL, NULL);
493 pinfo = (memory_infop)png_malloc(png_ptr,
496 current_allocation += size;
497 total_allocation += size;
499 if (current_allocation > maximum_allocation)
500 maximum_allocation = current_allocation;
501 pinfo->pointer = png_malloc(png_ptr, size);
502 /* Restore malloc_fn and free_fn */
503 png_set_mem_fn(png_ptr,
504 NULL, png_debug_malloc, png_debug_free);
505 if (size != 0 && pinfo->pointer == NULL)
507 current_allocation -= size;
508 total_allocation -= size;
510 "out of memory in pngtest->png_debug_malloc");
512 pinfo->next = pinformation;
513 pinformation = pinfo;
514 /* Make sure the caller isn't assuming zeroed memory. */
515 png_memset(pinfo->pointer, 0xdd, pinfo->size);
517 printf("png_malloc %lu bytes at %x\n", (unsigned long)size,
519 return (png_voidp)(pinfo->pointer);
523 /* Free a pointer. It is removed from the list at the same time. */
525 png_debug_free(png_structp png_ptr, png_voidp ptr)
528 fprintf(STDERR, "NULL pointer to png_debug_free.\n");
531 #if 0 /* This happens all the time. */
532 fprintf(STDERR, "WARNING: freeing NULL pointer\n");
537 /* Unlink the element from the list. */
539 memory_infop FAR *ppinfo = &pinformation;
542 memory_infop pinfo = *ppinfo;
543 if (pinfo->pointer == ptr)
545 *ppinfo = pinfo->next;
546 current_allocation -= pinfo->size;
547 if (current_allocation < 0)
548 fprintf(STDERR, "Duplicate free of memory\n");
549 /* We must free the list element too, but first kill
550 the memory that is to be freed. */
551 png_memset(ptr, 0x55, pinfo->size);
552 png_free_default(png_ptr, pinfo);
556 if (pinfo->next == NULL)
558 fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
561 ppinfo = &pinfo->next;
565 /* Finally free the data. */
567 printf("Freeing %x\n", ptr);
568 png_free_default(png_ptr, ptr);
571 #endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
572 /* END of code to test memory allocation/deallocation */
575 /* Demonstration of user chunk support of the sTER and vpAg chunks */
576 #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
578 /* (sTER is a public chunk not yet known by libpng. vpAg is a private
579 chunk used in ImageMagick to store "virtual page" size). */
581 static png_uint_32 user_chunk_data[4];
589 static int read_user_chunk_callback(png_struct *png_ptr,
590 png_unknown_chunkp chunk)
595 /* Return one of the following:
596 * return (-n); chunk had an error
597 * return (0); did not recognize
598 * return (n); success
600 * The unknown chunk structure contains the chunk data:
605 * Note that libpng has already taken care of the CRC handling.
608 if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
609 chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
611 /* Found sTER chunk */
612 if (chunk->size != 1)
613 return (-1); /* Error return */
614 if (chunk->data[0] != 0 && chunk->data[0] != 1)
615 return (-1); /* Invalid mode */
616 my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
617 my_user_chunk_data[0]=chunk->data[0]+1;
621 if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
622 chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
623 return (0); /* Did not recognize */
625 /* Found ImageMagick vpAg chunk */
627 if (chunk->size != 9)
628 return (-1); /* Error return */
630 my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr);
632 my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data);
633 my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4);
634 my_user_chunk_data[3]=(png_uint_32)chunk->data[8];
640 /* END of code to demonstrate user chunk support */
644 test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
646 static png_FILE_p fpin;
647 static png_FILE_p fpout; /* "static" prevents setjmp corruption */
648 png_structp read_ptr;
649 png_infop read_info_ptr, end_info_ptr;
650 #ifdef PNG_WRITE_SUPPORTED
651 png_structp write_ptr;
652 png_infop write_info_ptr;
653 png_infop write_end_info_ptr;
655 png_structp write_ptr = NULL;
656 png_infop write_info_ptr = NULL;
657 png_infop write_end_info_ptr = NULL;
661 png_uint_32 width, height;
663 int bit_depth, color_type;
664 #ifdef PNG_SETJMP_SUPPORTED
665 #ifdef USE_FAR_KEYWORD
670 char inbuf[256], outbuf[256];
674 if ((fpin = fopen(inname, "rb")) == NULL)
676 fprintf(STDERR, "Could not find input file %s\n", inname);
680 if ((fpout = fopen(outname, "wb")) == NULL)
682 fprintf(STDERR, "Could not open output file %s\n", outname);
687 png_debug(0, "Allocating read and write structures");
688 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
690 png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
692 (png_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free);
695 png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
697 #ifndef PNG_STDIO_SUPPORTED
698 png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
702 #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
703 user_chunk_data[0] = 0;
704 user_chunk_data[1] = 0;
705 user_chunk_data[2] = 0;
706 user_chunk_data[3] = 0;
707 png_set_read_user_chunk_fn(read_ptr, user_chunk_data,
708 read_user_chunk_callback);
711 #ifdef PNG_WRITE_SUPPORTED
712 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
714 png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
715 NULL, NULL, NULL, png_debug_malloc, png_debug_free);
718 png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
720 #ifndef PNG_STDIO_SUPPORTED
721 png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
725 png_debug(0, "Allocating read_info, write_info and end_info structures");
726 read_info_ptr = png_create_info_struct(read_ptr);
727 end_info_ptr = png_create_info_struct(read_ptr);
728 #ifdef PNG_WRITE_SUPPORTED
729 write_info_ptr = png_create_info_struct(write_ptr);
730 write_end_info_ptr = png_create_info_struct(write_ptr);
733 #ifdef PNG_SETJMP_SUPPORTED
734 png_debug(0, "Setting jmpbuf for read struct");
735 #ifdef USE_FAR_KEYWORD
738 if (setjmp(png_jmpbuf(read_ptr)))
741 fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
742 png_free(read_ptr, row_buf);
744 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
745 #ifdef PNG_WRITE_SUPPORTED
746 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
747 png_destroy_write_struct(&write_ptr, &write_info_ptr);
753 #ifdef USE_FAR_KEYWORD
754 png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
757 #ifdef PNG_WRITE_SUPPORTED
758 png_debug(0, "Setting jmpbuf for write struct");
759 #ifdef USE_FAR_KEYWORD
762 if (setjmp(png_jmpbuf(write_ptr)))
765 fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
766 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
767 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
768 #ifdef PNG_WRITE_SUPPORTED
769 png_destroy_write_struct(&write_ptr, &write_info_ptr);
775 #ifdef USE_FAR_KEYWORD
776 png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
781 png_debug(0, "Initializing input and output streams");
782 #ifdef PNG_STDIO_SUPPORTED
783 png_init_io(read_ptr, fpin);
784 # ifdef PNG_WRITE_SUPPORTED
785 png_init_io(write_ptr, fpout);
788 png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
789 # ifdef PNG_WRITE_SUPPORTED
790 png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
791 # ifdef PNG_WRITE_FLUSH_SUPPORTED
798 if (status_dots_requested == 1)
800 #ifdef PNG_WRITE_SUPPORTED
801 png_set_write_status_fn(write_ptr, write_row_callback);
803 png_set_read_status_fn(read_ptr, read_row_callback);
807 #ifdef PNG_WRITE_SUPPORTED
808 png_set_write_status_fn(write_ptr, NULL);
810 png_set_read_status_fn(read_ptr, NULL);
813 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
816 for (i = 0; i<256; i++)
818 png_set_read_user_transform_fn(read_ptr, count_filters);
821 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
823 png_set_write_user_transform_fn(write_ptr, count_zero_samples);
826 #ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
827 # ifndef PNG_HANDLE_CHUNK_ALWAYS
828 # define PNG_HANDLE_CHUNK_ALWAYS 3
830 png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
833 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
834 # ifndef PNG_HANDLE_CHUNK_IF_SAFE
835 # define PNG_HANDLE_CHUNK_IF_SAFE 2
837 png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE,
841 png_debug(0, "Reading info struct");
842 png_read_info(read_ptr, read_info_ptr);
844 png_debug(0, "Transferring info struct");
846 int interlace_type, compression_type, filter_type;
848 if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
849 &color_type, &interlace_type, &compression_type, &filter_type))
851 png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
852 #ifdef PNG_WRITE_INTERLACING_SUPPORTED
853 color_type, interlace_type, compression_type, filter_type);
855 color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
859 #ifdef PNG_FIXED_POINT_SUPPORTED
860 #ifdef PNG_cHRM_SUPPORTED
862 png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
864 if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
865 &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
867 png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
868 red_y, green_x, green_y, blue_x, blue_y);
872 #ifdef PNG_gAMA_SUPPORTED
874 png_fixed_point gamma;
876 if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
877 png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
880 #else /* Use floating point versions */
881 #ifdef PNG_FLOATING_POINT_SUPPORTED
882 #ifdef PNG_cHRM_SUPPORTED
884 double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
886 if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
887 &red_y, &green_x, &green_y, &blue_x, &blue_y))
889 png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
890 red_y, green_x, green_y, blue_x, blue_y);
894 #ifdef PNG_gAMA_SUPPORTED
898 if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
899 png_set_gAMA(write_ptr, write_info_ptr, gamma);
902 #endif /* Floating point */
903 #endif /* Fixed point */
904 #ifdef PNG_iCCP_SUPPORTED
909 int compression_type;
911 if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
914 png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
919 #ifdef PNG_sRGB_SUPPORTED
923 if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
924 png_set_sRGB(write_ptr, write_info_ptr, intent);
931 if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
932 png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
934 #ifdef PNG_bKGD_SUPPORTED
936 png_color_16p background;
938 if (png_get_bKGD(read_ptr, read_info_ptr, &background))
940 png_set_bKGD(write_ptr, write_info_ptr, background);
944 #ifdef PNG_hIST_SUPPORTED
948 if (png_get_hIST(read_ptr, read_info_ptr, &hist))
949 png_set_hIST(write_ptr, write_info_ptr, hist);
952 #ifdef PNG_oFFs_SUPPORTED
954 png_int_32 offset_x, offset_y;
957 if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
960 png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
964 #ifdef PNG_pCAL_SUPPORTED
966 png_charp purpose, units;
971 if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
972 &nparams, &units, ¶ms))
974 png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
975 nparams, units, params);
979 #ifdef PNG_pHYs_SUPPORTED
981 png_uint_32 res_x, res_y;
984 if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
985 png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
988 #ifdef PNG_sBIT_SUPPORTED
990 png_color_8p sig_bit;
992 if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
993 png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
996 #ifdef PNG_sCAL_SUPPORTED
997 #ifdef PNG_FLOATING_POINT_SUPPORTED
1000 double scal_width, scal_height;
1002 if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
1005 png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
1009 #ifdef PNG_FIXED_POINT_SUPPORTED
1012 png_charp scal_width, scal_height;
1014 if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
1017 png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
1024 #ifdef PNG_TEXT_SUPPORTED
1029 if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
1031 png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
1032 png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
1036 #ifdef PNG_tIME_SUPPORTED
1040 if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
1042 png_set_tIME(write_ptr, write_info_ptr, mod_time);
1043 #ifdef PNG_TIME_RFC1123_SUPPORTED
1044 /* We have to use png_memcpy instead of "=" because the string
1045 * pointed to by png_convert_to_rfc1123() gets free'ed before
1048 png_memcpy(tIME_string,
1049 png_convert_to_rfc1123(read_ptr, mod_time),
1050 png_sizeof(tIME_string));
1051 tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1052 tIME_chunk_present++;
1053 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1057 #ifdef PNG_tRNS_SUPPORTED
1059 png_bytep trans_alpha;
1061 png_color_16p trans_color;
1063 if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
1066 int sample_max = (1 << bit_depth);
1067 /* libpng doesn't reject a tRNS chunk with out-of-range samples */
1068 if (!((color_type == PNG_COLOR_TYPE_GRAY &&
1069 (int)trans_color->gray > sample_max) ||
1070 (color_type == PNG_COLOR_TYPE_RGB &&
1071 ((int)trans_color->red > sample_max ||
1072 (int)trans_color->green > sample_max ||
1073 (int)trans_color->blue > sample_max))))
1074 png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
1079 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1081 png_unknown_chunkp unknowns;
1082 int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
1087 png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
1089 /* Copy the locations from the read_info_ptr. The automatically
1090 * generated locations in write_info_ptr are wrong because we
1091 * haven't written anything yet.
1093 for (i = 0; i < (png_size_t)num_unknowns; i++)
1094 png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
1095 unknowns[i].location);
1100 #ifdef PNG_WRITE_SUPPORTED
1101 png_debug(0, "Writing info struct");
1103 /* If we wanted, we could write info in two steps:
1104 * png_write_info_before_PLTE(write_ptr, write_info_ptr);
1106 png_write_info(write_ptr, write_info_ptr);
1108 #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
1109 if (user_chunk_data[0] != 0)
1111 png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
1117 fprintf(STDERR, "\n stereo mode = %lu\n",
1118 (unsigned long)(user_chunk_data[0] - 1));
1119 ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1);
1120 png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1);
1122 if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0)
1124 png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
1130 fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n",
1131 (unsigned long)user_chunk_data[1],
1132 (unsigned long)user_chunk_data[2],
1133 (unsigned long)user_chunk_data[3]);
1134 png_save_uint_32(vpag_chunk_data, user_chunk_data[1]);
1135 png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]);
1136 vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff);
1137 png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
1143 #ifdef SINGLE_ROWBUF_ALLOC
1144 png_debug(0, "Allocating row buffer...");
1145 row_buf = (png_bytep)png_malloc(read_ptr,
1146 png_get_rowbytes(read_ptr, read_info_ptr));
1147 png_debug1(0, "0x%08lx", (unsigned long)row_buf);
1148 #endif /* SINGLE_ROWBUF_ALLOC */
1149 png_debug(0, "Writing row data");
1151 #if defined(PNG_READ_INTERLACING_SUPPORTED) || \
1152 defined(PNG_WRITE_INTERLACING_SUPPORTED)
1153 num_pass = png_set_interlace_handling(read_ptr);
1154 # ifdef PNG_WRITE_SUPPORTED
1155 png_set_interlace_handling(write_ptr);
1161 #ifdef PNGTEST_TIMING
1162 t_stop = (float)clock();
1163 t_misc += (t_stop - t_start);
1166 for (pass = 0; pass < num_pass; pass++)
1168 png_debug1(0, "Writing row data for pass %d", pass);
1169 for (y = 0; y < height; y++)
1171 #ifndef SINGLE_ROWBUF_ALLOC
1172 png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y);
1173 row_buf = (png_bytep)png_malloc(read_ptr,
1174 png_get_rowbytes(read_ptr, read_info_ptr));
1175 png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf,
1176 png_get_rowbytes(read_ptr, read_info_ptr));
1177 #endif /* !SINGLE_ROWBUF_ALLOC */
1178 png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
1180 #ifdef PNG_WRITE_SUPPORTED
1181 #ifdef PNGTEST_TIMING
1182 t_stop = (float)clock();
1183 t_decode += (t_stop - t_start);
1186 png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
1187 #ifdef PNGTEST_TIMING
1188 t_stop = (float)clock();
1189 t_encode += (t_stop - t_start);
1192 #endif /* PNG_WRITE_SUPPORTED */
1194 #ifndef SINGLE_ROWBUF_ALLOC
1195 png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y);
1196 png_free(read_ptr, row_buf);
1198 #endif /* !SINGLE_ROWBUF_ALLOC */
1202 #ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
1203 png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
1205 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1206 png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
1209 png_debug(0, "Reading and writing end_info data");
1211 png_read_end(read_ptr, end_info_ptr);
1212 #ifdef PNG_TEXT_SUPPORTED
1217 if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
1219 png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text);
1220 png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
1224 #ifdef PNG_tIME_SUPPORTED
1228 if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
1230 png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
1231 #ifdef PNG_TIME_RFC1123_SUPPORTED
1232 /* We have to use png_memcpy instead of "=" because the string
1233 pointed to by png_convert_to_rfc1123() gets free'ed before
1235 png_memcpy(tIME_string,
1236 png_convert_to_rfc1123(read_ptr, mod_time),
1237 png_sizeof(tIME_string));
1238 tIME_string[png_sizeof(tIME_string) - 1] = '\0';
1239 tIME_chunk_present++;
1240 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1244 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1246 png_unknown_chunkp unknowns;
1248 num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr,
1253 png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
1255 /* Copy the locations from the read_info_ptr. The automatically
1256 * generated locations in write_end_info_ptr are wrong because we
1257 * haven't written the end_info yet.
1259 for (i = 0; i < (png_size_t)num_unknowns; i++)
1260 png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
1261 unknowns[i].location);
1265 #ifdef PNG_WRITE_SUPPORTED
1266 png_write_end(write_ptr, write_end_info_ptr);
1269 #ifdef PNG_EASY_ACCESS_SUPPORTED
1272 png_uint_32 iwidth, iheight;
1273 iwidth = png_get_image_width(write_ptr, write_info_ptr);
1274 iheight = png_get_image_height(write_ptr, write_info_ptr);
1275 fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
1276 (unsigned long)iwidth, (unsigned long)iheight);
1280 png_debug(0, "Destroying data structs");
1281 #ifdef SINGLE_ROWBUF_ALLOC
1282 png_debug(1, "destroying row_buf for read_ptr");
1283 png_free(read_ptr, row_buf);
1285 #endif /* SINGLE_ROWBUF_ALLOC */
1286 png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr");
1287 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
1288 #ifdef PNG_WRITE_SUPPORTED
1289 png_debug(1, "destroying write_end_info_ptr");
1290 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
1291 png_debug(1, "destroying write_ptr, write_info_ptr");
1292 png_destroy_write_struct(&write_ptr, &write_info_ptr);
1294 png_debug(0, "Destruction complete.");
1299 png_debug(0, "Opening files for comparison");
1300 if ((fpin = fopen(inname, "rb")) == NULL)
1302 fprintf(STDERR, "Could not find file %s\n", inname);
1306 if ((fpout = fopen(outname, "rb")) == NULL)
1308 fprintf(STDERR, "Could not find file %s\n", outname);
1315 png_size_t num_in, num_out;
1317 num_in = fread(inbuf, 1, 1, fpin);
1318 num_out = fread(outbuf, 1, 1, fpout);
1320 if (num_in != num_out)
1322 fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
1324 if (wrote_question == 0)
1327 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1328 inname, PNG_ZBUF_SIZE);
1330 "\n filtering heuristic (libpng default), compression");
1332 " level (zlib default),\n and zlib version (%s)?\n\n",
1344 if (png_memcmp(inbuf, outbuf, num_in))
1346 fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname);
1347 if (wrote_question == 0)
1350 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1351 inname, PNG_ZBUF_SIZE);
1353 "\n filtering heuristic (libpng default), compression");
1355 " level (zlib default),\n and zlib version (%s)?\n\n",
1371 /* Input and output filenames */
1373 static PNG_CONST char *inname = "pngtest/png";
1374 static PNG_CONST char *outname = "pngout/png";
1376 static PNG_CONST char *inname = "pngtest.png";
1377 static PNG_CONST char *outname = "pngout.png";
1381 main(int argc, char *argv[])
1386 fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
1387 fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
1388 fprintf(STDERR, "%s", png_get_copyright(NULL));
1389 /* Show the version of libpng used in building the library */
1390 fprintf(STDERR, " library (%lu):%s",
1391 (unsigned long)png_access_version_number(),
1392 png_get_header_version(NULL));
1393 /* Show the version of libpng used in building the application */
1394 fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
1395 PNG_HEADER_VERSION_STRING);
1396 fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
1397 (long)png_sizeof(png_struct), (long)png_sizeof(png_info));
1399 /* Do some consistency checking on the memory allocation settings, I'm
1400 * not sure this matters, but it is nice to know, the first of these
1401 * tests should be impossible because of the way the macros are set
1404 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
1405 fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
1407 /* I think the following can happen. */
1408 #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
1409 fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
1412 if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
1415 "Warning: versions are different between png.h and png.c\n");
1416 fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
1417 fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
1423 if (strcmp(argv[1], "-m") == 0)
1426 status_dots_requested = 0;
1428 else if (strcmp(argv[1], "-mv") == 0 ||
1429 strcmp(argv[1], "-vm") == 0 )
1433 status_dots_requested = 1;
1435 else if (strcmp(argv[1], "-v") == 0)
1438 status_dots_requested = 1;
1444 status_dots_requested = 0;
1448 if (!multiple && argc == 3 + verbose)
1449 outname = argv[2 + verbose];
1451 if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
1454 "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
1457 " reads/writes one PNG file (without -m) or multiple files (-m)\n");
1459 " with -m %s is used as a temporary file\n", outname);
1466 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1467 int allocation_now = current_allocation;
1469 for (i=2; i<argc; ++i)
1472 fprintf(STDERR, "\n Testing %s:", argv[i]);
1473 kerror = test_one_file(argv[i], outname);
1476 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1479 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
1480 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1481 (unsigned long)zero_samples);
1483 fprintf(STDERR, " PASS\n");
1485 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1486 for (k = 0; k<256; k++)
1487 if (filters_used[k])
1488 fprintf(STDERR, " Filter %d was used %lu times\n",
1489 k, (unsigned long)filters_used[k]);
1491 #ifdef PNG_TIME_RFC1123_SUPPORTED
1492 if (tIME_chunk_present != 0)
1493 fprintf(STDERR, " tIME = %s\n", tIME_string);
1494 tIME_chunk_present = 0;
1495 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1499 fprintf(STDERR, " FAIL\n");
1502 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1503 if (allocation_now != current_allocation)
1504 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1505 current_allocation - allocation_now);
1506 if (current_allocation != 0)
1508 memory_infop pinfo = pinformation;
1510 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1511 current_allocation);
1512 while (pinfo != NULL)
1514 fprintf(STDERR, " %lu bytes at %x\n",
1515 (unsigned long)pinfo->size,
1516 (unsigned int) pinfo->pointer);
1517 pinfo = pinfo->next;
1522 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1523 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1524 current_allocation);
1525 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1526 maximum_allocation);
1527 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1529 fprintf(STDERR, " Number of allocations: %10d\n",
1536 for (i = 0; i<3; ++i)
1539 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1540 int allocation_now = current_allocation;
1542 if (i == 1) status_dots_requested = 1;
1543 else if (verbose == 0)status_dots_requested = 0;
1544 if (i == 0 || verbose == 1 || ierror != 0)
1545 fprintf(STDERR, "\n Testing %s:", inname);
1546 kerror = test_one_file(inname, outname);
1549 if (verbose == 1 || i == 2)
1551 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1554 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
1555 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1556 (unsigned long)zero_samples);
1558 fprintf(STDERR, " PASS\n");
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]);
1566 #ifdef PNG_TIME_RFC1123_SUPPORTED
1567 if (tIME_chunk_present != 0)
1568 fprintf(STDERR, " tIME = %s\n", tIME_string);
1569 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1574 if (verbose == 0 && i != 2)
1575 fprintf(STDERR, "\n Testing %s:", inname);
1576 fprintf(STDERR, " FAIL\n");
1579 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1580 if (allocation_now != current_allocation)
1581 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1582 current_allocation - allocation_now);
1583 if (current_allocation != 0)
1585 memory_infop pinfo = pinformation;
1587 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1588 current_allocation);
1589 while (pinfo != NULL)
1591 fprintf(STDERR, " %lu bytes at %x\n",
1592 (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
1593 pinfo = pinfo->next;
1598 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1599 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1600 current_allocation);
1601 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1602 maximum_allocation);
1603 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1605 fprintf(STDERR, " Number of allocations: %10d\n",
1610 #ifdef PNGTEST_TIMING
1611 t_stop = (float)clock();
1612 t_misc += (t_stop - t_start);
1614 fprintf(STDERR, " CPU time used = %.3f seconds",
1615 (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
1616 fprintf(STDERR, " (decoding %.3f,\n",
1617 t_decode/(float)CLOCKS_PER_SEC);
1618 fprintf(STDERR, " encoding %.3f ,",
1619 t_encode/(float)CLOCKS_PER_SEC);
1620 fprintf(STDERR, " other %.3f seconds)\n\n",
1621 t_misc/(float)CLOCKS_PER_SEC);
1625 fprintf(STDERR, " libpng passes test\n");
1627 fprintf(STDERR, " libpng FAILS test\n");
1628 return (int)(ierror != 0);
1631 /* Generate a compiler error if there is an old png.h in the search path. */
1632 typedef version_1_4_4 your_png_h_is_not_version_1_4_4;