1 2 /* pngtest.c - a simple test program to test libpng 3 * 4 * Last changed in libpng 1.6.32 [August 24, 2017] 5 * Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson 6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 8 * 9 * This code is released under the libpng license. 10 * For conditions of distribution and use, see the disclaimer 11 * and license in png.h 12 * 13 * This program reads in a PNG image, writes it out again, and then 14 * compares the two files. If the files are identical, this shows that 15 * the basic chunk handling, filtering, and (de)compression code is working 16 * properly. It does not currently test all of the transforms, although 17 * it probably should. 18 * 19 * The program will report "FAIL" in certain legitimate cases: 20 * 1) when the compression level or filter selection method is changed. 21 * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192. 22 * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks 23 * exist in the input file. 24 * 4) others not listed here... 25 * In these cases, it is best to check with another tool such as "pngcheck" 26 * to see what the differences between the two files are. 27 * 28 * If a filename is given on the command-line, then this file is used 29 * for the input, rather than the default "pngtest.png". This allows 30 * testing a wide variety of files easily. You can also test a number 31 * of files at once by typing "pngtest -m file1.png file2.png ..." 32 */ 33 34 #define _POSIX_SOURCE 1 35 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 40 /* Defined so I can write to a file on gui/windowing platforms */ 41 /* #define STDERR stderr */ 42 #define STDERR stdout /* For DOS */ 43 44 #include "png.h" 45 46 /* Known chunks that exist in pngtest.png must be supported or pngtest will fail 47 * simply as a result of re-ordering them. This may be fixed in 1.7 48 * 49 * pngtest allocates a single row buffer for each row and overwrites it, 50 * therefore if the write side doesn't support the writing of interlaced images 51 * nothing can be done for an interlaced image (and the code below will fail 52 * horribly trying to write extra data after writing garbage). 53 */ 54 #if defined PNG_READ_SUPPORTED && /* else nothing can be done */\ 55 defined PNG_READ_bKGD_SUPPORTED &&\ 56 defined PNG_READ_cHRM_SUPPORTED &&\ 57 defined PNG_READ_gAMA_SUPPORTED &&\ 58 defined PNG_READ_oFFs_SUPPORTED &&\ 59 defined PNG_READ_pCAL_SUPPORTED &&\ 60 defined PNG_READ_pHYs_SUPPORTED &&\ 61 defined PNG_READ_sBIT_SUPPORTED &&\ 62 defined PNG_READ_sCAL_SUPPORTED &&\ 63 defined PNG_READ_sRGB_SUPPORTED &&\ 64 defined PNG_READ_sPLT_SUPPORTED &&\ 65 defined PNG_READ_tEXt_SUPPORTED &&\ 66 defined PNG_READ_tIME_SUPPORTED &&\ 67 defined PNG_READ_zTXt_SUPPORTED &&\ 68 (defined PNG_WRITE_INTERLACING_SUPPORTED || PNG_LIBPNG_VER >= 10700) 69 70 #ifdef PNG_ZLIB_HEADER 71 # include PNG_ZLIB_HEADER /* defined by pnglibconf.h from 1.7 */ 72 #else 73 # include "zlib.h" 74 #endif 75 76 /* Copied from pngpriv.h but only used in error messages below. */ 77 #ifndef PNG_ZBUF_SIZE 78 # define PNG_ZBUF_SIZE 8192 79 #endif 80 #define FCLOSE(file) fclose(file) 81 82 #ifndef PNG_STDIO_SUPPORTED 83 typedef FILE * png_FILE_p; 84 #endif 85 86 /* Makes pngtest verbose so we can find problems. */ 87 #ifndef PNG_DEBUG 88 # define PNG_DEBUG 0 89 #endif 90 91 #if PNG_DEBUG > 1 92 # define pngtest_debug(m) ((void)fprintf(stderr, m "\n")) 93 # define pngtest_debug1(m,p1) ((void)fprintf(stderr, m "\n", p1)) 94 # define pngtest_debug2(m,p1,p2) ((void)fprintf(stderr, m "\n", p1, p2)) 95 #else 96 # define pngtest_debug(m) ((void)0) 97 # define pngtest_debug1(m,p1) ((void)0) 98 # define pngtest_debug2(m,p1,p2) ((void)0) 99 #endif 100 101 #if !PNG_DEBUG 102 # define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */ 103 #endif 104 105 #ifndef PNG_UNUSED 106 # define PNG_UNUSED(param) (void)param; 107 #endif 108 109 /* Turn on CPU timing 110 #define PNGTEST_TIMING 111 */ 112 113 #ifndef PNG_FLOATING_POINT_SUPPORTED 114 #undef PNGTEST_TIMING 115 #endif 116 117 #ifdef PNGTEST_TIMING 118 static float t_start, t_stop, t_decode, t_encode, t_misc; 119 #include <time.h> 120 #endif 121 122 #ifdef PNG_TIME_RFC1123_SUPPORTED 123 #define PNG_tIME_STRING_LENGTH 29 124 static int tIME_chunk_present = 0; 125 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present"; 126 127 #if PNG_LIBPNG_VER < 10619 128 #define png_convert_to_rfc1123_buffer(ts, t) tIME_to_str(read_ptr, ts, t) 129 130 static int 131 tIME_to_str(png_structp png_ptr, png_charp ts, png_const_timep t) 132 { 133 png_const_charp str = png_convert_to_rfc1123(png_ptr, t); 134 135 if (str == NULL) 136 return 0; 137 138 strcpy(ts, str); 139 return 1; 140 } 141 #endif /* older libpng */ 142 #endif 143 144 static int verbose = 0; 145 static int strict = 0; 146 static int relaxed = 0; 147 static int xfail = 0; 148 static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */ 149 static int error_count = 0; /* count calls to png_error */ 150 static int warning_count = 0; /* count calls to png_warning */ 151 152 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */ 153 #ifndef png_jmpbuf 154 # define png_jmpbuf(png_ptr) png_ptr->jmpbuf 155 #endif 156 157 /* Defines for unknown chunk handling if required. */ 158 #ifndef PNG_HANDLE_CHUNK_ALWAYS 159 # define PNG_HANDLE_CHUNK_ALWAYS 3 160 #endif 161 #ifndef PNG_HANDLE_CHUNK_IF_SAFE 162 # define PNG_HANDLE_CHUNK_IF_SAFE 2 163 #endif 164 165 /* Utility to save typing/errors, the argument must be a name */ 166 #define MEMZERO(var) ((void)memset(&var, 0, sizeof var)) 167 168 /* Example of using row callbacks to make a simple progress meter */ 169 static int status_pass = 1; 170 static int status_dots_requested = 0; 171 static int status_dots = 1; 172 173 static void PNGCBAPI 174 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) 175 { 176 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX) 177 return; 178 179 if (status_pass != pass) 180 { 181 fprintf(stdout, "\n Pass %d: ", pass); 182 status_pass = pass; 183 status_dots = 31; 184 } 185 186 status_dots--; 187 188 if (status_dots == 0) 189 { 190 fprintf(stdout, "\n "); 191 status_dots=30; 192 } 193 194 fprintf(stdout, "r"); 195 } 196 197 #ifdef PNG_WRITE_SUPPORTED 198 static void PNGCBAPI 199 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) 200 { 201 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) 202 return; 203 204 fprintf(stdout, "w"); 205 } 206 #endif 207 208 209 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED 210 /* Example of using a user transform callback (doesn't do anything at present). 211 */ 212 static void PNGCBAPI 213 read_user_callback(png_structp png_ptr, png_row_infop row_info, png_bytep data) 214 { 215 PNG_UNUSED(png_ptr) 216 PNG_UNUSED(row_info) 217 PNG_UNUSED(data) 218 } 219 #endif 220 221 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED 222 /* Example of using user transform callback (we don't transform anything, 223 * but merely count the zero samples) 224 */ 225 226 static png_uint_32 zero_samples; 227 228 static void PNGCBAPI 229 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) 230 { 231 png_bytep dp = data; 232 if (png_ptr == NULL) 233 return; 234 235 /* Contents of row_info: 236 * png_uint_32 width width of row 237 * png_uint_32 rowbytes number of bytes in row 238 * png_byte color_type color type of pixels 239 * png_byte bit_depth bit depth of samples 240 * png_byte channels number of channels (1-4) 241 * png_byte pixel_depth bits per pixel (depth*channels) 242 */ 243 244 /* Counts the number of zero samples (or zero pixels if color_type is 3 */ 245 246 if (row_info->color_type == 0 || row_info->color_type == 3) 247 { 248 int pos = 0; 249 png_uint_32 n, nstop; 250 251 for (n = 0, nstop=row_info->width; n<nstop; n++) 252 { 253 if (row_info->bit_depth == 1) 254 { 255 if (((*dp << pos++ ) & 0x80) == 0) 256 zero_samples++; 257 258 if (pos == 8) 259 { 260 pos = 0; 261 dp++; 262 } 263 } 264 265 if (row_info->bit_depth == 2) 266 { 267 if (((*dp << (pos+=2)) & 0xc0) == 0) 268 zero_samples++; 269 270 if (pos == 8) 271 { 272 pos = 0; 273 dp++; 274 } 275 } 276 277 if (row_info->bit_depth == 4) 278 { 279 if (((*dp << (pos+=4)) & 0xf0) == 0) 280 zero_samples++; 281 282 if (pos == 8) 283 { 284 pos = 0; 285 dp++; 286 } 287 } 288 289 if (row_info->bit_depth == 8) 290 if (*dp++ == 0) 291 zero_samples++; 292 293 if (row_info->bit_depth == 16) 294 { 295 if ((*dp | *(dp+1)) == 0) 296 zero_samples++; 297 dp+=2; 298 } 299 } 300 } 301 else /* Other color types */ 302 { 303 png_uint_32 n, nstop; 304 int channel; 305 int color_channels = row_info->channels; 306 if (row_info->color_type > 3) 307 color_channels--; 308 309 for (n = 0, nstop=row_info->width; n<nstop; n++) 310 { 311 for (channel = 0; channel < color_channels; channel++) 312 { 313 if (row_info->bit_depth == 8) 314 if (*dp++ == 0) 315 zero_samples++; 316 317 if (row_info->bit_depth == 16) 318 { 319 if ((*dp | *(dp+1)) == 0) 320 zero_samples++; 321 322 dp+=2; 323 } 324 } 325 if (row_info->color_type > 3) 326 { 327 dp++; 328 if (row_info->bit_depth == 16) 329 dp++; 330 } 331 } 332 } 333 } 334 #endif /* WRITE_USER_TRANSFORM */ 335 336 #ifndef PNG_STDIO_SUPPORTED 337 /* START of code to validate stdio-free compilation */ 338 /* These copies of the default read/write functions come from pngrio.c and 339 * pngwio.c. They allow "don't include stdio" testing of the library. 340 * This is the function that does the actual reading of data. If you are 341 * not reading from a standard C stream, you should create a replacement 342 * read_data function and use it at run time with png_set_read_fn(), rather 343 * than changing the library. 344 */ 345 346 #ifdef PNG_IO_STATE_SUPPORTED 347 void 348 pngtest_check_io_state(png_structp png_ptr, png_size_t data_length, 349 png_uint_32 io_op); 350 void 351 pngtest_check_io_state(png_structp png_ptr, png_size_t data_length, 352 png_uint_32 io_op) 353 { 354 png_uint_32 io_state = png_get_io_state(png_ptr); 355 int err = 0; 356 357 /* Check if the current operation (reading / writing) is as expected. */ 358 if ((io_state & PNG_IO_MASK_OP) != io_op) 359 png_error(png_ptr, "Incorrect operation in I/O state"); 360 361 /* Check if the buffer size specific to the current location 362 * (file signature / header / data / crc) is as expected. 363 */ 364 switch (io_state & PNG_IO_MASK_LOC) 365 { 366 case PNG_IO_SIGNATURE: 367 if (data_length > 8) 368 err = 1; 369 break; 370 case PNG_IO_CHUNK_HDR: 371 if (data_length != 8) 372 err = 1; 373 break; 374 case PNG_IO_CHUNK_DATA: 375 break; /* no restrictions here */ 376 case PNG_IO_CHUNK_CRC: 377 if (data_length != 4) 378 err = 1; 379 break; 380 default: 381 err = 1; /* uninitialized */ 382 } 383 if (err != 0) 384 png_error(png_ptr, "Bad I/O state or buffer size"); 385 } 386 #endif 387 388 static void PNGCBAPI 389 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) 390 { 391 png_size_t check = 0; 392 png_voidp io_ptr; 393 394 /* fread() returns 0 on error, so it is OK to store this in a png_size_t 395 * instead of an int, which is what fread() actually returns. 396 */ 397 io_ptr = png_get_io_ptr(png_ptr); 398 if (io_ptr != NULL) 399 { 400 check = fread(data, 1, length, (png_FILE_p)io_ptr); 401 } 402 403 if (check != length) 404 { 405 png_error(png_ptr, "Read Error"); 406 } 407 408 #ifdef PNG_IO_STATE_SUPPORTED 409 pngtest_check_io_state(png_ptr, length, PNG_IO_READING); 410 #endif 411 } 412 413 #ifdef PNG_WRITE_FLUSH_SUPPORTED 414 static void PNGCBAPI 415 pngtest_flush(png_structp png_ptr) 416 { 417 /* Do nothing; fflush() is said to be just a waste of energy. */ 418 PNG_UNUSED(png_ptr) /* Stifle compiler warning */ 419 } 420 #endif 421 422 /* This is the function that does the actual writing of data. If you are 423 * not writing to a standard C stream, you should create a replacement 424 * write_data function and use it at run time with png_set_write_fn(), rather 425 * than changing the library. 426 */ 427 static void PNGCBAPI 428 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) 429 { 430 png_size_t check; 431 432 check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr)); 433 434 if (check != length) 435 { 436 png_error(png_ptr, "Write Error"); 437 } 438 439 #ifdef PNG_IO_STATE_SUPPORTED 440 pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING); 441 #endif 442 } 443 #endif /* !STDIO */ 444 445 /* This function is called when there is a warning, but the library thinks 446 * it can continue anyway. Replacement functions don't have to do anything 447 * here if you don't want to. In the default configuration, png_ptr is 448 * not used, but it is passed in case it may be useful. 449 */ 450 typedef struct 451 { 452 PNG_CONST char *file_name; 453 } pngtest_error_parameters; 454 455 static void PNGCBAPI 456 pngtest_warning(png_structp png_ptr, png_const_charp message) 457 { 458 PNG_CONST char *name = "UNKNOWN (ERROR!)"; 459 pngtest_error_parameters *test = 460 (pngtest_error_parameters*)png_get_error_ptr(png_ptr); 461 462 ++warning_count; 463 464 if (test != NULL && test->file_name != NULL) 465 name = test->file_name; 466 467 fprintf(STDERR, "\n%s: libpng warning: %s\n", name, message); 468 } 469 470 /* This is the default error handling function. Note that replacements for 471 * this function MUST NOT RETURN, or the program will likely crash. This 472 * function is used by default, or if the program supplies NULL for the 473 * error function pointer in png_set_error_fn(). 474 */ 475 static void PNGCBAPI 476 pngtest_error(png_structp png_ptr, png_const_charp message) 477 { 478 ++error_count; 479 480 pngtest_warning(png_ptr, message); 481 /* We can return because png_error calls the default handler, which is 482 * actually OK in this case. 483 */ 484 } 485 486 /* END of code to validate stdio-free compilation */ 487 488 /* START of code to validate memory allocation and deallocation */ 489 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 490 491 /* Allocate memory. For reasonable files, size should never exceed 492 * 64K. However, zlib may allocate more than 64K if you don't tell 493 * it not to. See zconf.h and png.h for more information. zlib does 494 * need to allocate exactly 64K, so whatever you call here must 495 * have the ability to do that. 496 * 497 * This piece of code can be compiled to validate max 64K allocations 498 * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. 499 */ 500 typedef struct memory_information 501 { 502 png_alloc_size_t size; 503 png_voidp pointer; 504 struct memory_information *next; 505 } memory_information; 506 typedef memory_information *memory_infop; 507 508 static memory_infop pinformation = NULL; 509 static int current_allocation = 0; 510 static int maximum_allocation = 0; 511 static int total_allocation = 0; 512 static int num_allocations = 0; 513 514 png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr, 515 png_alloc_size_t size)); 516 void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr)); 517 518 png_voidp 519 PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size) 520 { 521 522 /* png_malloc has already tested for NULL; png_create_struct calls 523 * png_debug_malloc directly, with png_ptr == NULL which is OK 524 */ 525 526 if (size == 0) 527 return (NULL); 528 529 /* This calls the library allocator twice, once to get the requested 530 buffer and once to get a new free list entry. */ 531 { 532 /* Disable malloc_fn and free_fn */ 533 memory_infop pinfo; 534 png_set_mem_fn(png_ptr, NULL, NULL, NULL); 535 pinfo = (memory_infop)png_malloc(png_ptr, 536 (sizeof *pinfo)); 537 pinfo->size = size; 538 current_allocation += size; 539 total_allocation += size; 540 num_allocations ++; 541 542 if (current_allocation > maximum_allocation) 543 maximum_allocation = current_allocation; 544 545 pinfo->pointer = png_malloc(png_ptr, size); 546 /* Restore malloc_fn and free_fn */ 547 548 png_set_mem_fn(png_ptr, 549 NULL, png_debug_malloc, png_debug_free); 550 551 if (size != 0 && pinfo->pointer == NULL) 552 { 553 current_allocation -= size; 554 total_allocation -= size; 555 png_error(png_ptr, 556 "out of memory in pngtest->png_debug_malloc"); 557 } 558 559 pinfo->next = pinformation; 560 pinformation = pinfo; 561 /* Make sure the caller isn't assuming zeroed memory. */ 562 memset(pinfo->pointer, 0xdd, pinfo->size); 563 564 if (verbose != 0) 565 printf("png_malloc %lu bytes at %p\n", (unsigned long)size, 566 pinfo->pointer); 567 568 return (png_voidp)(pinfo->pointer); 569 } 570 } 571 572 /* Free a pointer. It is removed from the list at the same time. */ 573 void PNGCBAPI 574 png_debug_free(png_structp png_ptr, png_voidp ptr) 575 { 576 if (png_ptr == NULL) 577 fprintf(STDERR, "NULL pointer to png_debug_free.\n"); 578 579 if (ptr == 0) 580 { 581 #if 0 /* This happens all the time. */ 582 fprintf(STDERR, "WARNING: freeing NULL pointer\n"); 583 #endif 584 return; 585 } 586 587 /* Unlink the element from the list. */ 588 if (pinformation != NULL) 589 { 590 memory_infop *ppinfo = &pinformation; 591 592 for (;;) 593 { 594 memory_infop pinfo = *ppinfo; 595 596 if (pinfo->pointer == ptr) 597 { 598 *ppinfo = pinfo->next; 599 current_allocation -= pinfo->size; 600 if (current_allocation < 0) 601 fprintf(STDERR, "Duplicate free of memory\n"); 602 /* We must free the list element too, but first kill 603 the memory that is to be freed. */ 604 memset(ptr, 0x55, pinfo->size); 605 free(pinfo); 606 pinfo = NULL; 607 break; 608 } 609 610 if (pinfo->next == NULL) 611 { 612 fprintf(STDERR, "Pointer %p not found\n", ptr); 613 break; 614 } 615 616 ppinfo = &pinfo->next; 617 } 618 } 619 620 /* Finally free the data. */ 621 if (verbose != 0) 622 printf("Freeing %p\n", ptr); 623 624 if (ptr != NULL) 625 free(ptr); 626 ptr = NULL; 627 } 628 #endif /* USER_MEM && DEBUG */ 629 /* END of code to test memory allocation/deallocation */ 630 631 632 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED 633 /* Demonstration of user chunk support of the sTER and vpAg chunks */ 634 635 /* (sTER is a public chunk not yet known by libpng. vpAg is a private 636 chunk used in ImageMagick to store "virtual page" size). */ 637 638 static struct user_chunk_data 639 { 640 png_const_infop info_ptr; 641 png_uint_32 vpAg_width, vpAg_height; 642 png_byte vpAg_units; 643 png_byte sTER_mode; 644 int location[2]; 645 } 646 user_chunk_data; 647 648 /* Used for location and order; zero means nothing. */ 649 #define have_sTER 0x01 650 #define have_vpAg 0x02 651 #define before_PLTE 0x10 652 #define before_IDAT 0x20 653 #define after_IDAT 0x40 654 655 static void 656 init_callback_info(png_const_infop info_ptr) 657 { 658 MEMZERO(user_chunk_data); 659 user_chunk_data.info_ptr = info_ptr; 660 } 661 662 static int 663 set_location(png_structp png_ptr, struct user_chunk_data *data, int what) 664 { 665 int location; 666 667 if ((data->location[0] & what) != 0 || (data->location[1] & what) != 0) 668 return 0; /* already have one of these */ 669 670 /* Find where we are (the code below zeroes info_ptr to indicate that the 671 * chunks before the first IDAT have been read.) 672 */ 673 if (data->info_ptr == NULL) /* after IDAT */ 674 location = what | after_IDAT; 675 676 else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE) != 0) 677 location = what | before_IDAT; 678 679 else 680 location = what | before_PLTE; 681 682 if (data->location[0] == 0) 683 data->location[0] = location; 684 685 else 686 data->location[1] = location; 687 688 return 1; /* handled */ 689 } 690 691 static int PNGCBAPI 692 read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk) 693 { 694 struct user_chunk_data *my_user_chunk_data = 695 (struct user_chunk_data*)png_get_user_chunk_ptr(png_ptr); 696 697 if (my_user_chunk_data == NULL) 698 png_error(png_ptr, "lost user chunk pointer"); 699 700 /* Return one of the following: 701 * return (-n); chunk had an error 702 * return (0); did not recognize 703 * return (n); success 704 * 705 * The unknown chunk structure contains the chunk data: 706 * png_byte name[5]; 707 * png_byte *data; 708 * png_size_t size; 709 * 710 * Note that libpng has already taken care of the CRC handling. 711 */ 712 713 if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */ 714 chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */ 715 { 716 /* Found sTER chunk */ 717 if (chunk->size != 1) 718 return (-1); /* Error return */ 719 720 if (chunk->data[0] != 0 && chunk->data[0] != 1) 721 return (-1); /* Invalid mode */ 722 723 if (set_location(png_ptr, my_user_chunk_data, have_sTER) != 0) 724 { 725 my_user_chunk_data->sTER_mode=chunk->data[0]; 726 return (1); 727 } 728 729 else 730 return (0); /* duplicate sTER - give it to libpng */ 731 } 732 733 if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */ 734 chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */ 735 return (0); /* Did not recognize */ 736 737 /* Found ImageMagick vpAg chunk */ 738 739 if (chunk->size != 9) 740 return (-1); /* Error return */ 741 742 if (set_location(png_ptr, my_user_chunk_data, have_vpAg) == 0) 743 return (0); /* duplicate vpAg */ 744 745 my_user_chunk_data->vpAg_width = png_get_uint_31(png_ptr, chunk->data); 746 my_user_chunk_data->vpAg_height = png_get_uint_31(png_ptr, chunk->data + 4); 747 my_user_chunk_data->vpAg_units = chunk->data[8]; 748 749 return (1); 750 } 751 752 #ifdef PNG_WRITE_SUPPORTED 753 static void 754 write_sTER_chunk(png_structp write_ptr) 755 { 756 png_byte sTER[5] = {115, 84, 69, 82, '\0'}; 757 758 if (verbose != 0) 759 fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode); 760 761 png_write_chunk(write_ptr, sTER, &user_chunk_data.sTER_mode, 1); 762 } 763 764 static void 765 write_vpAg_chunk(png_structp write_ptr) 766 { 767 png_byte vpAg[5] = {118, 112, 65, 103, '\0'}; 768 769 png_byte vpag_chunk_data[9]; 770 771 if (verbose != 0) 772 fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n", 773 (unsigned long)user_chunk_data.vpAg_width, 774 (unsigned long)user_chunk_data.vpAg_height, 775 user_chunk_data.vpAg_units); 776 777 png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width); 778 png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height); 779 vpag_chunk_data[8] = user_chunk_data.vpAg_units; 780 png_write_chunk(write_ptr, vpAg, vpag_chunk_data, 9); 781 } 782 783 static void 784 write_chunks(png_structp write_ptr, int location) 785 { 786 int i; 787 788 /* Notice that this preserves the original chunk order, however chunks 789 * intercepted by the callback will be written *after* chunks passed to 790 * libpng. This will actually reverse a pair of sTER chunks or a pair of 791 * vpAg chunks, resulting in an error later. This is not worth worrying 792 * about - the chunks should not be duplicated! 793 */ 794 for (i=0; i<2; ++i) 795 { 796 if (user_chunk_data.location[i] == (location | have_sTER)) 797 write_sTER_chunk(write_ptr); 798 799 else if (user_chunk_data.location[i] == (location | have_vpAg)) 800 write_vpAg_chunk(write_ptr); 801 } 802 } 803 #endif /* WRITE */ 804 #else /* !READ_USER_CHUNKS */ 805 # define write_chunks(pp,loc) ((void)0) 806 #endif 807 /* END of code to demonstrate user chunk support */ 808 809 /* START of code to check that libpng has the required text support; this only 810 * checks for the write support because if read support is missing the chunk 811 * will simply not be reported back to pngtest. 812 */ 813 #ifdef PNG_TEXT_SUPPORTED 814 static void 815 pngtest_check_text_support(png_structp png_ptr, png_textp text_ptr, 816 int num_text) 817 { 818 while (num_text > 0) 819 { 820 switch (text_ptr[--num_text].compression) 821 { 822 case PNG_TEXT_COMPRESSION_NONE: 823 break; 824 825 case PNG_TEXT_COMPRESSION_zTXt: 826 # ifndef PNG_WRITE_zTXt_SUPPORTED 827 ++unsupported_chunks; 828 /* In libpng 1.7 this now does an app-error, so stop it: */ 829 text_ptr[num_text].compression = PNG_TEXT_COMPRESSION_NONE; 830 # endif 831 break; 832 833 case PNG_ITXT_COMPRESSION_NONE: 834 case PNG_ITXT_COMPRESSION_zTXt: 835 # ifndef PNG_WRITE_iTXt_SUPPORTED 836 ++unsupported_chunks; 837 text_ptr[num_text].compression = PNG_TEXT_COMPRESSION_NONE; 838 # endif 839 break; 840 841 default: 842 /* This is an error */ 843 png_error(png_ptr, "invalid text chunk compression field"); 844 break; 845 } 846 } 847 } 848 #endif 849 /* END of code to check that libpng has the required text support */ 850 851 /* Test one file */ 852 static int 853 test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) 854 { 855 static png_FILE_p fpin; 856 static png_FILE_p fpout; /* "static" prevents setjmp corruption */ 857 pngtest_error_parameters error_parameters; 858 png_structp read_ptr; 859 png_infop read_info_ptr, end_info_ptr; 860 #ifdef PNG_WRITE_SUPPORTED 861 png_structp write_ptr; 862 png_infop write_info_ptr; 863 png_infop write_end_info_ptr; 864 #ifdef PNG_WRITE_FILTER_SUPPORTED 865 int interlace_preserved = 1; 866 #endif /* WRITE_FILTER */ 867 #else /* !WRITE */ 868 png_structp write_ptr = NULL; 869 png_infop write_info_ptr = NULL; 870 png_infop write_end_info_ptr = NULL; 871 #endif /* !WRITE */ 872 png_bytep row_buf; 873 png_uint_32 y; 874 png_uint_32 width, height; 875 volatile int num_passes; 876 int pass; 877 int bit_depth, color_type; 878 879 row_buf = NULL; 880 error_parameters.file_name = inname; 881 882 if ((fpin = fopen(inname, "rb")) == NULL) 883 { 884 fprintf(STDERR, "Could not find input file %s\n", inname); 885 return (1); 886 } 887 888 if ((fpout = fopen(outname, "wb")) == NULL) 889 { 890 fprintf(STDERR, "Could not open output file %s\n", outname); 891 FCLOSE(fpin); 892 return (1); 893 } 894 895 pngtest_debug("Allocating read and write structures"); 896 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 897 read_ptr = 898 png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL, 899 NULL, NULL, NULL, png_debug_malloc, png_debug_free); 900 #else 901 read_ptr = 902 png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); 903 #endif 904 png_set_error_fn(read_ptr, &error_parameters, pngtest_error, 905 pngtest_warning); 906 907 #ifdef PNG_WRITE_SUPPORTED 908 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 909 write_ptr = 910 png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL, 911 NULL, NULL, NULL, png_debug_malloc, png_debug_free); 912 #else 913 write_ptr = 914 png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); 915 #endif 916 png_set_error_fn(write_ptr, &error_parameters, pngtest_error, 917 pngtest_warning); 918 #endif 919 pngtest_debug("Allocating read_info, write_info and end_info structures"); 920 read_info_ptr = png_create_info_struct(read_ptr); 921 end_info_ptr = png_create_info_struct(read_ptr); 922 #ifdef PNG_WRITE_SUPPORTED 923 write_info_ptr = png_create_info_struct(write_ptr); 924 write_end_info_ptr = png_create_info_struct(write_ptr); 925 #endif 926 927 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED 928 init_callback_info(read_info_ptr); 929 png_set_read_user_chunk_fn(read_ptr, &user_chunk_data, 930 read_user_chunk_callback); 931 #endif 932 933 #ifdef PNG_SETJMP_SUPPORTED 934 pngtest_debug("Setting jmpbuf for read struct"); 935 if (setjmp(png_jmpbuf(read_ptr))) 936 { 937 fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname); 938 png_free(read_ptr, row_buf); 939 row_buf = NULL; 940 if (verbose != 0) 941 fprintf(STDERR, " destroy read structs\n"); 942 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); 943 #ifdef PNG_WRITE_SUPPORTED 944 if (verbose != 0) 945 fprintf(STDERR, " destroy write structs\n"); 946 png_destroy_info_struct(write_ptr, &write_end_info_ptr); 947 png_destroy_write_struct(&write_ptr, &write_info_ptr); 948 #endif 949 FCLOSE(fpin); 950 FCLOSE(fpout); 951 return (1); 952 } 953 954 #ifdef PNG_WRITE_SUPPORTED 955 pngtest_debug("Setting jmpbuf for write struct"); 956 957 if (setjmp(png_jmpbuf(write_ptr))) 958 { 959 fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname); 960 if (verbose != 0) 961 fprintf(STDERR, " destroying read structs\n"); 962 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); 963 if (verbose != 0) 964 fprintf(STDERR, " destroying write structs\n"); 965 png_destroy_info_struct(write_ptr, &write_end_info_ptr); 966 png_destroy_write_struct(&write_ptr, &write_info_ptr); 967 FCLOSE(fpin); 968 FCLOSE(fpout); 969 return (1); 970 } 971 #endif 972 #endif 973 974 #ifdef PNG_BENIGN_ERRORS_SUPPORTED 975 if (strict != 0) 976 { 977 /* Treat png_benign_error() as errors on read */ 978 png_set_benign_errors(read_ptr, 0); 979 980 # ifdef PNG_WRITE_SUPPORTED 981 /* Treat them as errors on write */ 982 png_set_benign_errors(write_ptr, 0); 983 # endif 984 985 /* if strict is not set, then app warnings and errors are treated as 986 * warnings in release builds, but not in unstable builds; this can be 987 * changed with '--relaxed'. 988 */ 989 } 990 991 else if (relaxed != 0) 992 { 993 /* Allow application (pngtest) errors and warnings to pass */ 994 png_set_benign_errors(read_ptr, 1); 995 996 /* Turn off CRC checking while reading */ 997 png_set_crc_action(read_ptr, PNG_CRC_QUIET_USE, PNG_CRC_QUIET_USE); 998 999 #ifdef PNG_IGNORE_ADLER32 1000 /* Turn off ADLER32 checking while reading */ 1001 png_set_option(read_ptr, PNG_IGNORE_ADLER32, PNG_OPTION_ON); 1002 #endif 1003 1004 # ifdef PNG_WRITE_SUPPORTED 1005 png_set_benign_errors(write_ptr, 1); 1006 # endif 1007 1008 } 1009 #endif /* BENIGN_ERRORS */ 1010 1011 pngtest_debug("Initializing input and output streams"); 1012 #ifdef PNG_STDIO_SUPPORTED 1013 png_init_io(read_ptr, fpin); 1014 # ifdef PNG_WRITE_SUPPORTED 1015 png_init_io(write_ptr, fpout); 1016 # endif 1017 #else 1018 png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data); 1019 # ifdef PNG_WRITE_SUPPORTED 1020 png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data, 1021 # ifdef PNG_WRITE_FLUSH_SUPPORTED 1022 pngtest_flush); 1023 # else 1024 NULL); 1025 # endif 1026 # endif 1027 #endif 1028 1029 if (status_dots_requested == 1) 1030 { 1031 #ifdef PNG_WRITE_SUPPORTED 1032 png_set_write_status_fn(write_ptr, write_row_callback); 1033 #endif 1034 png_set_read_status_fn(read_ptr, read_row_callback); 1035 } 1036 1037 else 1038 { 1039 #ifdef PNG_WRITE_SUPPORTED 1040 png_set_write_status_fn(write_ptr, NULL); 1041 #endif 1042 png_set_read_status_fn(read_ptr, NULL); 1043 } 1044 1045 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED 1046 png_set_read_user_transform_fn(read_ptr, read_user_callback); 1047 #endif 1048 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED 1049 zero_samples = 0; 1050 png_set_write_user_transform_fn(write_ptr, count_zero_samples); 1051 #endif 1052 1053 #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED 1054 /* Preserve all the unknown chunks, if possible. If this is disabled then, 1055 * even if the png_{get,set}_unknown_chunks stuff is enabled, we can't use 1056 * libpng to *save* the unknown chunks on read (because we can't switch the 1057 * save option on!) 1058 * 1059 * Notice that if SET_UNKNOWN_CHUNKS is *not* supported read will discard all 1060 * unknown chunks and write will write them all. 1061 */ 1062 #ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED 1063 png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS, 1064 NULL, 0); 1065 #endif 1066 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1067 png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS, 1068 NULL, 0); 1069 #endif 1070 #endif 1071 1072 pngtest_debug("Reading info struct"); 1073 png_read_info(read_ptr, read_info_ptr); 1074 1075 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED 1076 /* This is a bit of a hack; there is no obvious way in the callback function 1077 * to determine that the chunks before the first IDAT have been read, so 1078 * remove the info_ptr (which is only used to determine position relative to 1079 * PLTE) here to indicate that we are after the IDAT. 1080 */ 1081 user_chunk_data.info_ptr = NULL; 1082 #endif 1083 1084 pngtest_debug("Transferring info struct"); 1085 { 1086 int interlace_type, compression_type, filter_type; 1087 1088 if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth, 1089 &color_type, &interlace_type, &compression_type, &filter_type) != 0) 1090 { 1091 png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth, 1092 color_type, interlace_type, compression_type, filter_type); 1093 /* num_passes may not be available below if interlace support is not 1094 * provided by libpng for both read and write. 1095 */ 1096 switch (interlace_type) 1097 { 1098 case PNG_INTERLACE_NONE: 1099 num_passes = 1; 1100 break; 1101 1102 case PNG_INTERLACE_ADAM7: 1103 num_passes = 7; 1104 break; 1105 1106 default: 1107 png_error(read_ptr, "invalid interlace type"); 1108 /*NOT REACHED*/ 1109 } 1110 } 1111 1112 else 1113 png_error(read_ptr, "png_get_IHDR failed"); 1114 } 1115 #ifdef PNG_FIXED_POINT_SUPPORTED 1116 #ifdef PNG_cHRM_SUPPORTED 1117 { 1118 png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x, 1119 blue_y; 1120 1121 if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y, 1122 &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0) 1123 { 1124 png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x, 1125 red_y, green_x, green_y, blue_x, blue_y); 1126 } 1127 } 1128 #endif 1129 #ifdef PNG_gAMA_SUPPORTED 1130 { 1131 png_fixed_point gamma; 1132 1133 if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma) != 0) 1134 png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma); 1135 } 1136 #endif 1137 #else /* Use floating point versions */ 1138 #ifdef PNG_FLOATING_POINT_SUPPORTED 1139 #ifdef PNG_cHRM_SUPPORTED 1140 { 1141 double white_x, white_y, red_x, red_y, green_x, green_y, blue_x, 1142 blue_y; 1143 1144 if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x, 1145 &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0) 1146 { 1147 png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x, 1148 red_y, green_x, green_y, blue_x, blue_y); 1149 } 1150 } 1151 #endif 1152 #ifdef PNG_gAMA_SUPPORTED 1153 { 1154 double gamma; 1155 1156 if (png_get_gAMA(read_ptr, read_info_ptr, &gamma) != 0) 1157 png_set_gAMA(write_ptr, write_info_ptr, gamma); 1158 } 1159 #endif 1160 #endif /* Floating point */ 1161 #endif /* Fixed point */ 1162 #ifdef PNG_iCCP_SUPPORTED 1163 { 1164 png_charp name; 1165 png_bytep profile; 1166 png_uint_32 proflen; 1167 int compression_type; 1168 1169 if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type, 1170 &profile, &proflen) != 0) 1171 { 1172 png_set_iCCP(write_ptr, write_info_ptr, name, compression_type, 1173 profile, proflen); 1174 } 1175 } 1176 #endif 1177 #ifdef PNG_sRGB_SUPPORTED 1178 { 1179 int intent; 1180 1181 if (png_get_sRGB(read_ptr, read_info_ptr, &intent) != 0) 1182 png_set_sRGB(write_ptr, write_info_ptr, intent); 1183 } 1184 #endif 1185 { 1186 png_colorp palette; 1187 int num_palette; 1188 1189 if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette) != 0) 1190 png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette); 1191 } 1192 #ifdef PNG_bKGD_SUPPORTED 1193 { 1194 png_color_16p background; 1195 1196 if (png_get_bKGD(read_ptr, read_info_ptr, &background) != 0) 1197 { 1198 png_set_bKGD(write_ptr, write_info_ptr, background); 1199 } 1200 } 1201 #endif 1202 #ifdef PNG_READ_eXIf_SUPPORTED 1203 { 1204 png_bytep exif=NULL; 1205 png_uint_32 exif_length; 1206 1207 if (png_get_eXIf_1(read_ptr, read_info_ptr, &exif_length, &exif) != 0) 1208 { 1209 if (exif_length > 1) 1210 fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1], 1211 (unsigned long)exif_length); 1212 # ifdef PNG_WRITE_eXIf_SUPPORTED 1213 png_set_eXIf_1(write_ptr, write_info_ptr, exif_length, exif); 1214 # endif 1215 } 1216 } 1217 #endif 1218 #ifdef PNG_hIST_SUPPORTED 1219 { 1220 png_uint_16p hist; 1221 1222 if (png_get_hIST(read_ptr, read_info_ptr, &hist) != 0) 1223 png_set_hIST(write_ptr, write_info_ptr, hist); 1224 } 1225 #endif 1226 #ifdef PNG_oFFs_SUPPORTED 1227 { 1228 png_int_32 offset_x, offset_y; 1229 int unit_type; 1230 1231 if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y, 1232 &unit_type) != 0) 1233 { 1234 png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type); 1235 } 1236 } 1237 #endif 1238 #ifdef PNG_pCAL_SUPPORTED 1239 { 1240 png_charp purpose, units; 1241 png_charpp params; 1242 png_int_32 X0, X1; 1243 int type, nparams; 1244 1245 if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type, 1246 &nparams, &units, ¶ms) != 0) 1247 { 1248 png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type, 1249 nparams, units, params); 1250 } 1251 } 1252 #endif 1253 #ifdef PNG_pHYs_SUPPORTED 1254 { 1255 png_uint_32 res_x, res_y; 1256 int unit_type; 1257 1258 if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, 1259 &unit_type) != 0) 1260 png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type); 1261 } 1262 #endif 1263 #ifdef PNG_sBIT_SUPPORTED 1264 { 1265 png_color_8p sig_bit; 1266 1267 if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit) != 0) 1268 png_set_sBIT(write_ptr, write_info_ptr, sig_bit); 1269 } 1270 #endif 1271 #ifdef PNG_sCAL_SUPPORTED 1272 #if defined(PNG_FLOATING_POINT_SUPPORTED) && \ 1273 defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) 1274 { 1275 int unit; 1276 double scal_width, scal_height; 1277 1278 if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width, 1279 &scal_height) != 0) 1280 { 1281 png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height); 1282 } 1283 } 1284 #else 1285 #ifdef PNG_FIXED_POINT_SUPPORTED 1286 { 1287 int unit; 1288 png_charp scal_width, scal_height; 1289 1290 if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width, 1291 &scal_height) != 0) 1292 { 1293 png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width, 1294 scal_height); 1295 } 1296 } 1297 #endif 1298 #endif 1299 #endif 1300 1301 #ifdef PNG_sPLT_SUPPORTED 1302 { 1303 png_sPLT_tp entries; 1304 1305 int num_entries = (int) png_get_sPLT(read_ptr, read_info_ptr, &entries); 1306 if (num_entries) 1307 { 1308 png_set_sPLT(write_ptr, write_info_ptr, entries, num_entries); 1309 } 1310 } 1311 #endif 1312 1313 #ifdef PNG_TEXT_SUPPORTED 1314 { 1315 png_textp text_ptr; 1316 int num_text; 1317 1318 if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0) 1319 { 1320 pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text); 1321 1322 pngtest_check_text_support(read_ptr, text_ptr, num_text); 1323 1324 if (verbose != 0) 1325 { 1326 int i; 1327 1328 fprintf(STDERR,"\n"); 1329 for (i=0; i<num_text; i++) 1330 { 1331 fprintf(STDERR," Text compression[%d]=%d\n", 1332 i, text_ptr[i].compression); 1333 } 1334 } 1335 1336 png_set_text(write_ptr, write_info_ptr, text_ptr, num_text); 1337 } 1338 } 1339 #endif 1340 #ifdef PNG_tIME_SUPPORTED 1341 { 1342 png_timep mod_time; 1343 1344 if (png_get_tIME(read_ptr, read_info_ptr, &mod_time) != 0) 1345 { 1346 png_set_tIME(write_ptr, write_info_ptr, mod_time); 1347 #ifdef PNG_TIME_RFC1123_SUPPORTED 1348 if (png_convert_to_rfc1123_buffer(tIME_string, mod_time) != 0) 1349 tIME_string[(sizeof tIME_string) - 1] = '\0'; 1350 1351 else 1352 { 1353 strncpy(tIME_string, "*** invalid time ***", (sizeof tIME_string)); 1354 tIME_string[(sizeof tIME_string) - 1] = '\0'; 1355 } 1356 1357 tIME_chunk_present++; 1358 #endif /* TIME_RFC1123 */ 1359 } 1360 } 1361 #endif 1362 #ifdef PNG_tRNS_SUPPORTED 1363 { 1364 png_bytep trans_alpha; 1365 int num_trans; 1366 png_color_16p trans_color; 1367 1368 if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans, 1369 &trans_color) != 0) 1370 { 1371 int sample_max = (1 << bit_depth); 1372 /* libpng doesn't reject a tRNS chunk with out-of-range samples */ 1373 if (!((color_type == PNG_COLOR_TYPE_GRAY && 1374 (int)trans_color->gray > sample_max) || 1375 (color_type == PNG_COLOR_TYPE_RGB && 1376 ((int)trans_color->red > sample_max || 1377 (int)trans_color->green > sample_max || 1378 (int)trans_color->blue > sample_max)))) 1379 png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans, 1380 trans_color); 1381 } 1382 } 1383 #endif 1384 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1385 { 1386 png_unknown_chunkp unknowns; 1387 int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr, 1388 &unknowns); 1389 1390 if (num_unknowns != 0) 1391 { 1392 png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns, 1393 num_unknowns); 1394 #if PNG_LIBPNG_VER < 10600 1395 /* Copy the locations from the read_info_ptr. The automatically 1396 * generated locations in write_end_info_ptr are wrong prior to 1.6.0 1397 * because they are reset from the write pointer (removed in 1.6.0). 1398 */ 1399 { 1400 int i; 1401 for (i = 0; i < num_unknowns; i++) 1402 png_set_unknown_chunk_location(write_ptr, write_info_ptr, i, 1403 unknowns[i].location); 1404 } 1405 #endif 1406 } 1407 } 1408 #endif 1409 1410 #ifdef PNG_WRITE_SUPPORTED 1411 pngtest_debug("Writing info struct"); 1412 1413 /* Write the info in two steps so that if we write the 'unknown' chunks here 1414 * they go to the correct place. 1415 */ 1416 png_write_info_before_PLTE(write_ptr, write_info_ptr); 1417 1418 write_chunks(write_ptr, before_PLTE); /* before PLTE */ 1419 1420 png_write_info(write_ptr, write_info_ptr); 1421 1422 write_chunks(write_ptr, before_IDAT); /* after PLTE */ 1423 1424 png_write_info(write_ptr, write_end_info_ptr); 1425 1426 write_chunks(write_ptr, after_IDAT); /* after IDAT */ 1427 1428 #ifdef PNG_COMPRESSION_COMPAT 1429 /* Test the 'compatibility' setting here, if it is available. */ 1430 png_set_compression(write_ptr, PNG_COMPRESSION_COMPAT); 1431 #endif 1432 #endif 1433 1434 #ifdef SINGLE_ROWBUF_ALLOC 1435 pngtest_debug("Allocating row buffer..."); 1436 row_buf = (png_bytep)png_malloc(read_ptr, 1437 png_get_rowbytes(read_ptr, read_info_ptr)); 1438 1439 pngtest_debug1("\t0x%08lx", (unsigned long)row_buf); 1440 #endif /* SINGLE_ROWBUF_ALLOC */ 1441 pngtest_debug("Writing row data"); 1442 1443 #if defined(PNG_READ_INTERLACING_SUPPORTED) &&\ 1444 defined(PNG_WRITE_INTERLACING_SUPPORTED) 1445 /* Both must be defined for libpng to be able to handle the interlace, 1446 * otherwise it gets handled below by simply reading and writing the passes 1447 * directly. 1448 */ 1449 if (png_set_interlace_handling(read_ptr) != num_passes) 1450 png_error(write_ptr, 1451 "png_set_interlace_handling(read): wrong pass count "); 1452 if (png_set_interlace_handling(write_ptr) != num_passes) 1453 png_error(write_ptr, 1454 "png_set_interlace_handling(write): wrong pass count "); 1455 #else /* png_set_interlace_handling not called on either read or write */ 1456 # define calc_pass_height 1457 #endif /* not using libpng interlace handling */ 1458 1459 #ifdef PNGTEST_TIMING 1460 t_stop = (float)clock(); 1461 t_misc += (t_stop - t_start); 1462 t_start = t_stop; 1463 #endif 1464 for (pass = 0; pass < num_passes; pass++) 1465 { 1466 # ifdef calc_pass_height 1467 png_uint_32 pass_height; 1468 1469 if (num_passes == 7) /* interlaced */ 1470 { 1471 if (PNG_PASS_COLS(width, pass) > 0) 1472 pass_height = PNG_PASS_ROWS(height, pass); 1473 1474 else 1475 pass_height = 0; 1476 } 1477 1478 else /* not interlaced */ 1479 pass_height = height; 1480 # else 1481 # define pass_height height 1482 # endif 1483 1484 pngtest_debug1("Writing row data for pass %d", pass); 1485 for (y = 0; y < pass_height; y++) 1486 { 1487 #ifndef SINGLE_ROWBUF_ALLOC 1488 pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y); 1489 1490 row_buf = (png_bytep)png_malloc(read_ptr, 1491 png_get_rowbytes(read_ptr, read_info_ptr)); 1492 1493 pngtest_debug2("\t0x%08lx (%lu bytes)", (unsigned long)row_buf, 1494 (unsigned long)png_get_rowbytes(read_ptr, read_info_ptr)); 1495 1496 #endif /* !SINGLE_ROWBUF_ALLOC */ 1497 png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1); 1498 1499 #ifdef PNG_WRITE_SUPPORTED 1500 #ifdef PNGTEST_TIMING 1501 t_stop = (float)clock(); 1502 t_decode += (t_stop - t_start); 1503 t_start = t_stop; 1504 #endif 1505 png_write_rows(write_ptr, (png_bytepp)&row_buf, 1); 1506 #ifdef PNGTEST_TIMING 1507 t_stop = (float)clock(); 1508 t_encode += (t_stop - t_start); 1509 t_start = t_stop; 1510 #endif 1511 #endif /* WRITE */ 1512 1513 #ifndef SINGLE_ROWBUF_ALLOC 1514 pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y); 1515 png_free(read_ptr, row_buf); 1516 row_buf = NULL; 1517 #endif /* !SINGLE_ROWBUF_ALLOC */ 1518 } 1519 } 1520 1521 #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED 1522 # ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED 1523 png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1); 1524 # endif 1525 # ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1526 png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1); 1527 # endif 1528 #endif 1529 1530 pngtest_debug("Reading and writing end_info data"); 1531 1532 png_read_end(read_ptr, end_info_ptr); 1533 #ifdef PNG_TEXT_SUPPORTED 1534 { 1535 png_textp text_ptr; 1536 int num_text; 1537 1538 if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0) 1539 { 1540 pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text); 1541 1542 pngtest_check_text_support(read_ptr, text_ptr, num_text); 1543 1544 if (verbose != 0) 1545 { 1546 int i; 1547 1548 fprintf(STDERR,"\n"); 1549 for (i=0; i<num_text; i++) 1550 { 1551 fprintf(STDERR," Text compression[%d]=%d\n", 1552 i, text_ptr[i].compression); 1553 } 1554 } 1555 1556 png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text); 1557 } 1558 } 1559 #endif 1560 #ifdef PNG_READ_eXIf_SUPPORTED 1561 { 1562 png_bytep exif=NULL; 1563 png_uint_32 exif_length; 1564 1565 if (png_get_eXIf_1(read_ptr, end_info_ptr, &exif_length, &exif) != 0) 1566 { 1567 if (exif_length > 1) 1568 fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1], 1569 (unsigned long)exif_length); 1570 # ifdef PNG_WRITE_eXIf_SUPPORTED 1571 png_set_eXIf_1(write_ptr, write_end_info_ptr, exif_length, exif); 1572 # endif 1573 } 1574 } 1575 #endif 1576 #ifdef PNG_tIME_SUPPORTED 1577 { 1578 png_timep mod_time; 1579 1580 if (png_get_tIME(read_ptr, end_info_ptr, &mod_time) != 0) 1581 { 1582 png_set_tIME(write_ptr, write_end_info_ptr, mod_time); 1583 #ifdef PNG_TIME_RFC1123_SUPPORTED 1584 if (png_convert_to_rfc1123_buffer(tIME_string, mod_time) != 0) 1585 tIME_string[(sizeof tIME_string) - 1] = '\0'; 1586 1587 else 1588 { 1589 strncpy(tIME_string, "*** invalid time ***", sizeof tIME_string); 1590 tIME_string[(sizeof tIME_string)-1] = '\0'; 1591 } 1592 1593 tIME_chunk_present++; 1594 #endif /* TIME_RFC1123 */ 1595 } 1596 } 1597 #endif 1598 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED 1599 { 1600 png_unknown_chunkp unknowns; 1601 int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr, 1602 &unknowns); 1603 1604 if (num_unknowns != 0) 1605 { 1606 png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns, 1607 num_unknowns); 1608 #if PNG_LIBPNG_VER < 10600 1609 /* Copy the locations from the read_info_ptr. The automatically 1610 * generated locations in write_end_info_ptr are wrong prior to 1.6.0 1611 * because they are reset from the write pointer (removed in 1.6.0). 1612 */ 1613 { 1614 int i; 1615 for (i = 0; i < num_unknowns; i++) 1616 png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i, 1617 unknowns[i].location); 1618 } 1619 #endif 1620 } 1621 } 1622 #endif 1623 1624 #ifdef PNG_WRITE_SUPPORTED 1625 #ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED 1626 /* Normally one would use Z_DEFAULT_STRATEGY for text compression. 1627 * This is here just to make pngtest replicate the results from libpng 1628 * versions prior to 1.5.4, and to test this new API. 1629 */ 1630 png_set_text_compression_strategy(write_ptr, Z_FILTERED); 1631 #endif 1632 1633 /* When the unknown vpAg/sTER chunks are written by pngtest the only way to 1634 * do it is to write them *before* calling png_write_end. When unknown 1635 * chunks are written by libpng, however, they are written just before IEND. 1636 * There seems to be no way round this, however vpAg/sTER are not expected 1637 * after IDAT. 1638 */ 1639 write_chunks(write_ptr, after_IDAT); 1640 1641 png_write_end(write_ptr, write_end_info_ptr); 1642 #endif 1643 1644 #ifdef PNG_EASY_ACCESS_SUPPORTED 1645 if (verbose != 0) 1646 { 1647 png_uint_32 iwidth, iheight; 1648 iwidth = png_get_image_width(write_ptr, write_info_ptr); 1649 iheight = png_get_image_height(write_ptr, write_info_ptr); 1650 fprintf(STDERR, "\n Image width = %lu, height = %lu\n", 1651 (unsigned long)iwidth, (unsigned long)iheight); 1652 } 1653 #endif 1654 1655 pngtest_debug("Destroying data structs"); 1656 #ifdef SINGLE_ROWBUF_ALLOC 1657 pngtest_debug("destroying row_buf for read_ptr"); 1658 png_free(read_ptr, row_buf); 1659 row_buf = NULL; 1660 #endif /* SINGLE_ROWBUF_ALLOC */ 1661 pngtest_debug("destroying read_ptr, read_info_ptr, end_info_ptr"); 1662 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); 1663 #ifdef PNG_WRITE_SUPPORTED 1664 pngtest_debug("destroying write_end_info_ptr"); 1665 png_destroy_info_struct(write_ptr, &write_end_info_ptr); 1666 pngtest_debug("destroying write_ptr, write_info_ptr"); 1667 png_destroy_write_struct(&write_ptr, &write_info_ptr); 1668 #endif 1669 pngtest_debug("Destruction complete."); 1670 1671 FCLOSE(fpin); 1672 FCLOSE(fpout); 1673 1674 /* Summarize any warnings or errors and in 'strict' mode fail the test. 1675 * Unsupported chunks can result in warnings, in that case ignore the strict 1676 * setting, otherwise fail the test on warnings as well as errors. 1677 */ 1678 if (error_count > 0) 1679 { 1680 /* We don't really expect to get here because of the setjmp handling 1681 * above, but this is safe. 1682 */ 1683 fprintf(STDERR, "\n %s: %d libpng errors found (%d warnings)", 1684 inname, error_count, warning_count); 1685 1686 if (strict != 0) 1687 return (1); 1688 } 1689 1690 # ifdef PNG_WRITE_SUPPORTED 1691 /* If there is no write support nothing was written! */ 1692 else if (unsupported_chunks > 0) 1693 { 1694 fprintf(STDERR, "\n %s: unsupported chunks (%d)%s", 1695 inname, unsupported_chunks, strict ? ": IGNORED --strict!" : ""); 1696 } 1697 # endif 1698 1699 else if (warning_count > 0) 1700 { 1701 fprintf(STDERR, "\n %s: %d libpng warnings found", 1702 inname, warning_count); 1703 1704 if (strict != 0) 1705 return (1); 1706 } 1707 1708 pngtest_debug("Opening files for comparison"); 1709 if ((fpin = fopen(inname, "rb")) == NULL) 1710 { 1711 fprintf(STDERR, "Could not find file %s\n", inname); 1712 return (1); 1713 } 1714 1715 if ((fpout = fopen(outname, "rb")) == NULL) 1716 { 1717 fprintf(STDERR, "Could not find file %s\n", outname); 1718 FCLOSE(fpin); 1719 return (1); 1720 } 1721 1722 #if defined (PNG_WRITE_SUPPORTED) /* else nothing was written */ &&\ 1723 defined (PNG_WRITE_FILTER_SUPPORTED) 1724 if (interlace_preserved != 0) /* else the files will be changed */ 1725 { 1726 for (;;) 1727 { 1728 static int wrote_question = 0; 1729 png_size_t num_in, num_out; 1730 char inbuf[256], outbuf[256]; 1731 1732 num_in = fread(inbuf, 1, sizeof inbuf, fpin); 1733 num_out = fread(outbuf, 1, sizeof outbuf, fpout); 1734 1735 if (num_in != num_out) 1736 { 1737 fprintf(STDERR, "\nFiles %s and %s are of a different size\n", 1738 inname, outname); 1739 1740 if (wrote_question == 0 && unsupported_chunks == 0) 1741 { 1742 fprintf(STDERR, 1743 " Was %s written with the same maximum IDAT" 1744 " chunk size (%d bytes),", 1745 inname, PNG_ZBUF_SIZE); 1746 fprintf(STDERR, 1747 "\n filtering heuristic (libpng default), compression"); 1748 fprintf(STDERR, 1749 " level (zlib default),\n and zlib version (%s)?\n\n", 1750 ZLIB_VERSION); 1751 wrote_question = 1; 1752 } 1753 1754 FCLOSE(fpin); 1755 FCLOSE(fpout); 1756 1757 if (strict != 0 && unsupported_chunks == 0) 1758 return (1); 1759 1760 else 1761 return (0); 1762 } 1763 1764 if (num_in == 0) 1765 break; 1766 1767 if (memcmp(inbuf, outbuf, num_in)) 1768 { 1769 fprintf(STDERR, "\nFiles %s and %s are different\n", inname, 1770 outname); 1771 1772 if (wrote_question == 0 && unsupported_chunks == 0) 1773 { 1774 fprintf(STDERR, 1775 " Was %s written with the same maximum" 1776 " IDAT chunk size (%d bytes),", 1777 inname, PNG_ZBUF_SIZE); 1778 fprintf(STDERR, 1779 "\n filtering heuristic (libpng default), compression"); 1780 fprintf(STDERR, 1781 " level (zlib default),\n and zlib version (%s)?\n\n", 1782 ZLIB_VERSION); 1783 wrote_question = 1; 1784 } 1785 1786 FCLOSE(fpin); 1787 FCLOSE(fpout); 1788 1789 /* NOTE: the unsupported_chunks escape is permitted here because 1790 * unsupported text chunk compression will result in the compression 1791 * mode being changed (to NONE) yet, in the test case, the result 1792 * can be exactly the same size! 1793 */ 1794 if (strict != 0 && unsupported_chunks == 0) 1795 return (1); 1796 1797 else 1798 return (0); 1799 } 1800 } 1801 } 1802 #endif /* WRITE && WRITE_FILTER */ 1803 1804 FCLOSE(fpin); 1805 FCLOSE(fpout); 1806 1807 return (0); 1808 } 1809 1810 /* Input and output filenames */ 1811 #ifdef RISCOS 1812 static PNG_CONST char *inname = "pngtest/png"; 1813 static PNG_CONST char *outname = "pngout/png"; 1814 #else 1815 static PNG_CONST char *inname = "pngtest.png"; 1816 static PNG_CONST char *outname = "pngout.png"; 1817 #endif 1818 1819 int 1820 main(int argc, char *argv[]) 1821 { 1822 int multiple = 0; 1823 int ierror = 0; 1824 1825 png_structp dummy_ptr; 1826 1827 fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING); 1828 fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION); 1829 fprintf(STDERR, "%s", png_get_copyright(NULL)); 1830 /* Show the version of libpng used in building the library */ 1831 fprintf(STDERR, " library (%lu):%s", 1832 (unsigned long)png_access_version_number(), 1833 png_get_header_version(NULL)); 1834 1835 /* Show the version of libpng used in building the application */ 1836 fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER, 1837 PNG_HEADER_VERSION_STRING); 1838 1839 /* Do some consistency checking on the memory allocation settings, I'm 1840 * not sure this matters, but it is nice to know, the first of these 1841 * tests should be impossible because of the way the macros are set 1842 * in pngconf.h 1843 */ 1844 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) 1845 fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n"); 1846 #endif 1847 /* I think the following can happen. */ 1848 #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K) 1849 fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n"); 1850 #endif 1851 1852 if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING)) 1853 { 1854 fprintf(STDERR, 1855 "Warning: versions are different between png.h and png.c\n"); 1856 fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING); 1857 fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver); 1858 ++ierror; 1859 } 1860 1861 if (argc > 1) 1862 { 1863 if (strcmp(argv[1], "-m") == 0) 1864 { 1865 multiple = 1; 1866 status_dots_requested = 0; 1867 } 1868 1869 else if (strcmp(argv[1], "-mv") == 0 || 1870 strcmp(argv[1], "-vm") == 0 ) 1871 { 1872 multiple = 1; 1873 verbose = 1; 1874 status_dots_requested = 1; 1875 } 1876 1877 else if (strcmp(argv[1], "-v") == 0) 1878 { 1879 verbose = 1; 1880 status_dots_requested = 1; 1881 inname = argv[2]; 1882 } 1883 1884 else if (strcmp(argv[1], "--strict") == 0) 1885 { 1886 status_dots_requested = 0; 1887 verbose = 1; 1888 inname = argv[2]; 1889 strict++; 1890 relaxed = 0; 1891 multiple=1; 1892 } 1893 1894 else if (strcmp(argv[1], "--relaxed") == 0) 1895 { 1896 status_dots_requested = 0; 1897 verbose = 1; 1898 inname = argv[2]; 1899 strict = 0; 1900 relaxed++; 1901 multiple=1; 1902 } 1903 else if (strcmp(argv[1], "--xfail") == 0) 1904 { 1905 status_dots_requested = 0; 1906 verbose = 1; 1907 inname = argv[2]; 1908 strict = 0; 1909 xfail++; 1910 relaxed++; 1911 multiple=1; 1912 } 1913 1914 else 1915 { 1916 inname = argv[1]; 1917 status_dots_requested = 0; 1918 } 1919 } 1920 1921 if (multiple == 0 && argc == 3 + verbose) 1922 outname = argv[2 + verbose]; 1923 1924 if ((multiple == 0 && argc > 3 + verbose) || 1925 (multiple != 0 && argc < 2)) 1926 { 1927 fprintf(STDERR, 1928 "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n", 1929 argv[0], argv[0]); 1930 fprintf(STDERR, 1931 " reads/writes one PNG file (without -m) or multiple files (-m)\n"); 1932 fprintf(STDERR, 1933 " with -m %s is used as a temporary file\n", outname); 1934 exit(1); 1935 } 1936 1937 if (multiple != 0) 1938 { 1939 int i; 1940 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 1941 int allocation_now = current_allocation; 1942 #endif 1943 for (i=2; i<argc; ++i) 1944 { 1945 int kerror; 1946 fprintf(STDERR, "\n Testing %s:", argv[i]); 1947 #if PNG_DEBUG > 0 1948 fprintf(STDERR, "\n"); 1949 #endif 1950 kerror = test_one_file(argv[i], outname); 1951 if (kerror == 0) 1952 { 1953 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED 1954 fprintf(STDERR, "\n PASS (%lu zero samples)\n", 1955 (unsigned long)zero_samples); 1956 #else 1957 fprintf(STDERR, " PASS\n"); 1958 #endif 1959 #ifdef PNG_TIME_RFC1123_SUPPORTED 1960 if (tIME_chunk_present != 0) 1961 fprintf(STDERR, " tIME = %s\n", tIME_string); 1962 1963 tIME_chunk_present = 0; 1964 #endif /* TIME_RFC1123 */ 1965 } 1966 1967 else 1968 { 1969 if (xfail) 1970 fprintf(STDERR, " XFAIL\n"); 1971 else 1972 { 1973 fprintf(STDERR, " FAIL\n"); 1974 ierror += kerror; 1975 } 1976 } 1977 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 1978 if (allocation_now != current_allocation) 1979 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n", 1980 current_allocation - allocation_now); 1981 1982 if (current_allocation != 0) 1983 { 1984 memory_infop pinfo = pinformation; 1985 1986 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n", 1987 current_allocation); 1988 1989 while (pinfo != NULL) 1990 { 1991 fprintf(STDERR, " %lu bytes at %p\n", 1992 (unsigned long)pinfo->size, 1993 pinfo->pointer); 1994 pinfo = pinfo->next; 1995 } 1996 } 1997 #endif 1998 } 1999 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 2000 fprintf(STDERR, " Current memory allocation: %10d bytes\n", 2001 current_allocation); 2002 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n", 2003 maximum_allocation); 2004 fprintf(STDERR, " Total memory allocation: %10d bytes\n", 2005 total_allocation); 2006 fprintf(STDERR, " Number of allocations: %10d\n", 2007 num_allocations); 2008 #endif 2009 } 2010 2011 else 2012 { 2013 int i; 2014 for (i = 0; i<3; ++i) 2015 { 2016 int kerror; 2017 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 2018 int allocation_now = current_allocation; 2019 #endif 2020 if (i == 1) 2021 status_dots_requested = 1; 2022 2023 else if (verbose == 0) 2024 status_dots_requested = 0; 2025 2026 if (i == 0 || verbose == 1 || ierror != 0) 2027 { 2028 fprintf(STDERR, "\n Testing %s:", inname); 2029 #if PNG_DEBUG > 0 2030 fprintf(STDERR, "\n"); 2031 #endif 2032 } 2033 2034 kerror = test_one_file(inname, outname); 2035 2036 if (kerror == 0) 2037 { 2038 if (verbose == 1 || i == 2) 2039 { 2040 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED 2041 fprintf(STDERR, "\n PASS (%lu zero samples)\n", 2042 (unsigned long)zero_samples); 2043 #else 2044 fprintf(STDERR, " PASS\n"); 2045 #endif 2046 #ifdef PNG_TIME_RFC1123_SUPPORTED 2047 if (tIME_chunk_present != 0) 2048 fprintf(STDERR, " tIME = %s\n", tIME_string); 2049 #endif /* TIME_RFC1123 */ 2050 } 2051 } 2052 2053 else 2054 { 2055 if (verbose == 0 && i != 2) 2056 { 2057 fprintf(STDERR, "\n Testing %s:", inname); 2058 #if PNG_DEBUG > 0 2059 fprintf(STDERR, "\n"); 2060 #endif 2061 } 2062 2063 if (xfail) 2064 fprintf(STDERR, " XFAIL\n"); 2065 else 2066 { 2067 fprintf(STDERR, " FAIL\n"); 2068 ierror += kerror; 2069 } 2070 } 2071 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 2072 if (allocation_now != current_allocation) 2073 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n", 2074 current_allocation - allocation_now); 2075 2076 if (current_allocation != 0) 2077 { 2078 memory_infop pinfo = pinformation; 2079 2080 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n", 2081 current_allocation); 2082 2083 while (pinfo != NULL) 2084 { 2085 fprintf(STDERR, " %lu bytes at %p\n", 2086 (unsigned long)pinfo->size, pinfo->pointer); 2087 pinfo = pinfo->next; 2088 } 2089 } 2090 #endif 2091 } 2092 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG 2093 fprintf(STDERR, " Current memory allocation: %10d bytes\n", 2094 current_allocation); 2095 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n", 2096 maximum_allocation); 2097 fprintf(STDERR, " Total memory allocation: %10d bytes\n", 2098 total_allocation); 2099 fprintf(STDERR, " Number of allocations: %10d\n", 2100 num_allocations); 2101 #endif 2102 } 2103 2104 #ifdef PNGTEST_TIMING 2105 t_stop = (float)clock(); 2106 t_misc += (t_stop - t_start); 2107 t_start = t_stop; 2108 fprintf(STDERR, " CPU time used = %.3f seconds", 2109 (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC); 2110 fprintf(STDERR, " (decoding %.3f,\n", 2111 t_decode/(float)CLOCKS_PER_SEC); 2112 fprintf(STDERR, " encoding %.3f ,", 2113 t_encode/(float)CLOCKS_PER_SEC); 2114 fprintf(STDERR, " other %.3f seconds)\n\n", 2115 t_misc/(float)CLOCKS_PER_SEC); 2116 #endif 2117 2118 if (ierror == 0) 2119 fprintf(STDERR, " libpng passes test\n"); 2120 2121 else 2122 fprintf(STDERR, " libpng FAILS test\n"); 2123 2124 dummy_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); 2125 fprintf(STDERR, " Default limits:\n"); 2126 fprintf(STDERR, " width_max = %lu\n", 2127 (unsigned long) png_get_user_width_max(dummy_ptr)); 2128 fprintf(STDERR, " height_max = %lu\n", 2129 (unsigned long) png_get_user_height_max(dummy_ptr)); 2130 if (png_get_chunk_cache_max(dummy_ptr) == 0) 2131 fprintf(STDERR, " cache_max = unlimited\n"); 2132 else 2133 fprintf(STDERR, " cache_max = %lu\n", 2134 (unsigned long) png_get_chunk_cache_max(dummy_ptr)); 2135 if (png_get_chunk_malloc_max(dummy_ptr) == 0) 2136 fprintf(STDERR, " malloc_max = unlimited\n"); 2137 else 2138 fprintf(STDERR, " malloc_max = %lu\n", 2139 (unsigned long) png_get_chunk_malloc_max(dummy_ptr)); 2140 png_destroy_read_struct(&dummy_ptr, NULL, NULL); 2141 2142 return (int)(ierror != 0); 2143 } 2144 #else 2145 int 2146 main(void) 2147 { 2148 fprintf(STDERR, 2149 " test ignored because libpng was not built with read support\n"); 2150 /* And skip this test */ 2151 return PNG_LIBPNG_VER < 10600 ? 0 : 77; 2152 } 2153 #endif 2154 2155 /* Generate a compiler error if there is an old png.h in the search path. */ 2156 typedef png_libpng_version_1_6_34 Your_png_h_is_not_version_1_6_34; 2157
