| |
| /* pngtest.c - a test program for libpng |
| * |
| * Copyright (c) 2018-2024 Cosmin Truta |
| * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson |
| * Copyright (c) 1996-1997 Andreas Dilger |
| * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. |
| * |
| * This code is released under the libpng license. |
| * For conditions of distribution and use, see the disclaimer |
| * and license in png.h |
| * |
| * This program reads in a PNG image, writes it out again, and then |
| * compares the two files. If the files are identical, this shows that |
| * the basic chunk handling, filtering, and (de)compression code is working |
| * properly. It does not currently test all of the transforms, although |
| * it probably should. |
| * |
| * The program will report "FAIL" in certain legitimate cases: |
| * 1) when the compression level or filter selection method is changed. |
| * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192. |
| * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks |
| * exist in the input file. |
| * 4) others not listed here... |
| * In these cases, it is best to check with another tool such as "pngcheck" |
| * to see what the differences between the two files are. |
| * |
| * If a filename is given on the command-line, then this file is used |
| * for the input, rather than the default "pngtest.png". This allows |
| * testing a wide variety of files easily. You can also test a number |
| * of files at once by typing "pngtest -m file1.png file2.png ..." |
| */ |
| |
| #define _POSIX_SOURCE 1 |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| #ifdef PNG_ZLIB_HEADER |
| # include PNG_ZLIB_HEADER /* defined by pnglibconf.h from 1.7 */ |
| #else |
| # include <zlib.h> |
| #endif |
| |
| #include "png.h" |
| |
| /* Generate a compiler error if there is an old png.h in the search path. */ |
| typedef png_libpng_version_1_6_44_git Your_png_h_is_not_version_1_6_44_git; |
| |
| /* Ensure that all version numbers in png.h are consistent with one another. */ |
| #if (PNG_LIBPNG_VER != PNG_LIBPNG_VER_MAJOR * 10000 + \ |
| PNG_LIBPNG_VER_MINOR * 100 + \ |
| PNG_LIBPNG_VER_RELEASE) || \ |
| (PNG_LIBPNG_VER_SHAREDLIB != PNG_LIBPNG_VER_MAJOR * 10 + \ |
| PNG_LIBPNG_VER_MINOR) || \ |
| (PNG_LIBPNG_VER_SHAREDLIB != PNG_LIBPNG_VER_SONUM) || \ |
| (PNG_LIBPNG_VER_SHAREDLIB != PNG_LIBPNG_VER_DLLNUM) |
| # error "Inconsistent version numbers in png.h" |
| #endif |
| |
| /* In version 1.6.1, we added support for the configure test harness, which |
| * uses 77 to indicate a skipped test. On the other hand, in cmake build tests, |
| * we still need to succeed on a skipped test, so: |
| */ |
| #if defined(HAVE_CONFIG_H) |
| # define SKIP 77 |
| #else |
| # define SKIP 0 |
| #endif |
| |
| /* Known chunks that exist in pngtest.png must be supported, or pngtest will |
| * fail simply as a result of re-ordering them. This may be fixed in the next |
| * generation of libpng. |
| * |
| * pngtest allocates a single row buffer for each row and overwrites it, |
| * therefore if the write side doesn't support the writing of interlaced images |
| * nothing can be done for an interlaced image (and the code below will fail |
| * horribly trying to write extra data after writing garbage). |
| */ |
| #if defined PNG_READ_SUPPORTED && /* else nothing can be done */ \ |
| defined PNG_READ_bKGD_SUPPORTED && \ |
| defined PNG_READ_cHRM_SUPPORTED && \ |
| defined PNG_READ_gAMA_SUPPORTED && \ |
| defined PNG_READ_oFFs_SUPPORTED && \ |
| defined PNG_READ_pCAL_SUPPORTED && \ |
| defined PNG_READ_pHYs_SUPPORTED && \ |
| defined PNG_READ_sBIT_SUPPORTED && \ |
| defined PNG_READ_sCAL_SUPPORTED && \ |
| defined PNG_READ_sRGB_SUPPORTED && \ |
| defined PNG_READ_sPLT_SUPPORTED && \ |
| defined PNG_READ_tEXt_SUPPORTED && \ |
| defined PNG_READ_tIME_SUPPORTED && \ |
| defined PNG_READ_zTXt_SUPPORTED && \ |
| (defined PNG_WRITE_INTERLACING_SUPPORTED || PNG_LIBPNG_VER >= 10700) |
| |
| /* Copied from pngpriv.h but only used in error messages below. */ |
| #ifndef PNG_ZBUF_SIZE |
| # define PNG_ZBUF_SIZE 8192 |
| #endif |
| |
| #ifndef PNG_STDIO_SUPPORTED |
| typedef FILE * png_FILE_p; |
| #endif |
| |
| /* This hack was introduced for historical reasons, and we are |
| * still keeping it in libpng-1.6.x for compatibility reasons. |
| */ |
| #define STDERR stdout |
| |
| #ifndef PNG_DEBUG |
| # define PNG_DEBUG 0 |
| #endif |
| |
| #if PNG_DEBUG > 1 |
| # define pngtest_debug(m) ((void)fprintf(stderr, m "\n")) |
| # define pngtest_debug1(m, p1) ((void)fprintf(stderr, m "\n", p1)) |
| # define pngtest_debug2(m, p1, p2) ((void)fprintf(stderr, m "\n", p1, p2)) |
| #elif PNG_DEBUG == 0 || PNG_DEBUG == 1 |
| # define pngtest_debug(m) ((void)0) |
| # define pngtest_debug1(m, p1) ((void)0) |
| # define pngtest_debug2(m, p1, p2) ((void)0) |
| #else /* PNG_DEBUG < 0 */ |
| # error "Bad PNG_DEBUG value" |
| #endif |
| |
| /* Turn on CPU timing |
| #define PNGTEST_TIMING |
| */ |
| |
| #ifndef PNG_FLOATING_POINT_SUPPORTED |
| #undef PNGTEST_TIMING |
| #endif |
| |
| #ifdef PNGTEST_TIMING |
| static float t_start, t_stop, t_decode, t_encode, t_misc; |
| #include <time.h> |
| #endif |
| |
| #ifdef PNG_TIME_RFC1123_SUPPORTED |
| static int tIME_chunk_present = 0; |
| static char tIME_string[29] = "tIME chunk is not present"; |
| /* This use case is deprecated. |
| * See the declaration of png_convert_to_rfc1123_buffer for more details. |
| */ |
| #endif |
| |
| static int verbose = 0; |
| static int strict = 0; |
| static int relaxed = 0; |
| static int xfail = 0; |
| static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */ |
| static int error_count = 0; /* count calls to png_error */ |
| static int warning_count = 0; /* count calls to png_warning */ |
| |
| /* Example of using row callbacks to make a simple progress meter */ |
| static int status_pass = 1; |
| static int status_dots_requested = 0; |
| static int status_dots = 1; |
| |
| static void PNGCBAPI |
| read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) |
| { |
| /* The callback should always receive correct parameters. */ |
| if (png_ptr == NULL) |
| png_error(png_ptr, "read_row_callback: bad png_ptr"); |
| if (row_number > PNG_UINT_31_MAX) |
| png_error(png_ptr, "read_row_callback: bad row number"); |
| if (pass < 0 || pass > 7) |
| png_error(png_ptr, "read_row_callback: bad pass"); |
| |
| if (status_pass != pass) |
| { |
| fprintf(stdout, "\n Pass %d: ", pass); |
| status_pass = pass; |
| status_dots = 31; |
| } |
| |
| status_dots--; |
| |
| if (status_dots == 0) |
| { |
| fprintf(stdout, "\n "); |
| status_dots = 30; |
| } |
| |
| fprintf(stdout, "r"); |
| } |
| |
| #ifdef PNG_WRITE_SUPPORTED |
| static void PNGCBAPI |
| write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) |
| { |
| /* The callback should always receive correct parameters. */ |
| if (png_ptr == NULL) |
| png_error(png_ptr, "write_row_callback: bad png_ptr"); |
| if (row_number > PNG_UINT_31_MAX) |
| png_error(png_ptr, "write_row_callback: bad row number"); |
| if (pass < 0 || pass > 7) |
| png_error(png_ptr, "write_row_callback: bad pass"); |
| |
| fprintf(stdout, "w"); |
| } |
| #endif |
| |
| |
| #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED |
| /* Example of using a user transform callback (doesn't do anything at present). |
| */ |
| static void PNGCBAPI |
| read_user_callback(png_structp png_ptr, png_row_infop row_info, png_bytep data) |
| { |
| /* The callback should always receive correct parameters. */ |
| if (png_ptr == NULL) |
| png_error(png_ptr, "read_user_callback: bad png_ptr"); |
| if (row_info == NULL) |
| png_error(png_ptr, "read_user_callback: bad row info"); |
| if (data == NULL) |
| png_error(png_ptr, "read_user_callback: bad data"); |
| } |
| #endif |
| |
| #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED |
| /* Example of using user transform callback (we don't transform anything, |
| * but merely count the zero samples) |
| */ |
| |
| static png_uint_32 zero_samples; |
| |
| static void PNGCBAPI |
| count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) |
| { |
| png_bytep dp = data; |
| |
| /* The callback should always receive correct parameters. */ |
| if (png_ptr == NULL) |
| png_error(png_ptr, "count_zero_samples: bad png_ptr"); |
| if (row_info == NULL) |
| png_error(png_ptr, "count_zero_samples: bad row info"); |
| if (data == NULL) |
| png_error(png_ptr, "count_zero_samples: bad data"); |
| |
| /* Contents of row_info: |
| * png_uint_32 width width of row |
| * png_uint_32 rowbytes number of bytes in row |
| * png_byte color_type color type of pixels |
| * png_byte bit_depth bit depth of samples |
| * png_byte channels number of channels (1-4) |
| * png_byte pixel_depth bits per pixel (depth*channels) |
| */ |
| |
| /* Counts the number of zero samples (or zero pixels if color_type is 3 */ |
| |
| if (row_info->color_type == 0 || row_info->color_type == 3) |
| { |
| int pos = 0; |
| png_uint_32 n, nstop; |
| |
| for (n = 0, nstop = row_info->width; n < nstop; n++) |
| { |
| if (row_info->bit_depth == 1) |
| { |
| if (((*dp << pos++ ) & 0x80) == 0) |
| zero_samples++; |
| |
| if (pos == 8) |
| { |
| pos = 0; |
| dp++; |
| } |
| } |
| |
| if (row_info->bit_depth == 2) |
| { |
| if (((*dp << (pos+=2)) & 0xc0) == 0) |
| zero_samples++; |
| |
| if (pos == 8) |
| { |
| pos = 0; |
| dp++; |
| } |
| } |
| |
| if (row_info->bit_depth == 4) |
| { |
| if (((*dp << (pos+=4)) & 0xf0) == 0) |
| zero_samples++; |
| |
| if (pos == 8) |
| { |
| pos = 0; |
| dp++; |
| } |
| } |
| |
| if (row_info->bit_depth == 8) |
| if (*dp++ == 0) |
| zero_samples++; |
| |
| if (row_info->bit_depth == 16) |
| { |
| if ((*dp | *(dp+1)) == 0) |
| zero_samples++; |
| dp += 2; |
| } |
| } |
| } |
| else /* Other color types */ |
| { |
| png_uint_32 n, nstop; |
| int channel; |
| int color_channels = row_info->channels; |
| if (row_info->color_type > 3) |
| color_channels--; |
| |
| for (n = 0, nstop = row_info->width; n < nstop; n++) |
| { |
| for (channel = 0; channel < color_channels; channel++) |
| { |
| if (row_info->bit_depth == 8) |
| if (*dp++ == 0) |
| zero_samples++; |
| |
| if (row_info->bit_depth == 16) |
| { |
| if ((*dp | *(dp+1)) == 0) |
| zero_samples++; |
| |
| dp += 2; |
| } |
| } |
| if (row_info->color_type > 3) |
| { |
| dp++; |
| if (row_info->bit_depth == 16) |
| dp++; |
| } |
| } |
| } |
| } |
| #endif /* WRITE_USER_TRANSFORM */ |
| |
| #ifndef PNG_STDIO_SUPPORTED |
| /* START of code to validate stdio-free compilation */ |
| /* These copies of the default read/write functions come from pngrio.c and |
| * pngwio.c. They allow "don't include stdio" testing of the library. |
| * This is the function that does the actual reading of data. If you are |
| * not reading from a standard C stream, you should create a replacement |
| * read_data function and use it at run time with png_set_read_fn(), rather |
| * than changing the library. |
| */ |
| |
| #ifdef PNG_IO_STATE_SUPPORTED |
| void |
| pngtest_check_io_state(png_structp png_ptr, size_t data_length, |
| png_uint_32 io_op) |
| { |
| png_uint_32 io_state = png_get_io_state(png_ptr); |
| int err = 0; |
| |
| /* Check if the current operation (reading / writing) is as expected. */ |
| if ((io_state & PNG_IO_MASK_OP) != io_op) |
| png_error(png_ptr, "Incorrect operation in I/O state"); |
| |
| /* Check if the buffer size specific to the current location |
| * (file signature / header / data / crc) is as expected. |
| */ |
| switch ((io_state & PNG_IO_MASK_LOC) != 0) |
| { |
| case PNG_IO_SIGNATURE: |
| if (data_length > 8) |
| err = 1; |
| break; |
| case PNG_IO_CHUNK_HDR: |
| if (data_length != 8) |
| err = 1; |
| break; |
| case PNG_IO_CHUNK_DATA: |
| break; /* no restrictions here */ |
| case PNG_IO_CHUNK_CRC: |
| if (data_length != 4) |
| err = 1; |
| break; |
| default: |
| err = 1; /* uninitialized */ |
| } |
| if (err != 0) |
| png_error(png_ptr, "Bad I/O state or buffer size"); |
| } |
| #endif |
| |
| static void PNGCBAPI |
| pngtest_read_data(png_structp png_ptr, png_bytep data, size_t length) |
| { |
| size_t check = 0; |
| png_voidp io_ptr; |
| |
| if (png_ptr == NULL) |
| png_error(png_ptr, "pngtest_read_data: bad png_ptr"); |
| |
| /* fread() returns 0 on error, so it is OK to store this in a size_t |
| * instead of an int, which is what fread() actually returns. |
| */ |
| io_ptr = png_get_io_ptr(png_ptr); |
| if (io_ptr != NULL) |
| check = fread(data, 1, length, (png_FILE_p)io_ptr); |
| |
| if (check != length) |
| png_error(png_ptr, "Read Error"); |
| |
| #ifdef PNG_IO_STATE_SUPPORTED |
| pngtest_check_io_state(png_ptr, length, PNG_IO_READING); |
| #endif |
| } |
| |
| #ifdef PNG_WRITE_FLUSH_SUPPORTED |
| static void PNGCBAPI |
| pngtest_flush(png_structp png_ptr) |
| { |
| if (png_ptr == NULL) |
| png_error(png_ptr, "pngtest_flush: bad png_ptr"); |
| |
| /* Do nothing; fflush() is said to be just a waste of energy. */ |
| } |
| #endif |
| |
| /* This is the function that does the actual writing of data. If you are |
| * not writing to a standard C stream, you should create a replacement |
| * write_data function and use it at run time with png_set_write_fn(), rather |
| * than changing the library. |
| */ |
| static void PNGCBAPI |
| pngtest_write_data(png_structp png_ptr, png_bytep data, size_t length) |
| { |
| size_t check; |
| |
| if (png_ptr == NULL) |
| png_error(png_ptr, "pngtest_write_data: bad png_ptr"); |
| |
| check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr)); |
| |
| if (check != length) |
| png_error(png_ptr, "Write Error"); |
| |
| #ifdef PNG_IO_STATE_SUPPORTED |
| pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING); |
| #endif |
| } |
| #endif /* !STDIO */ |
| |
| /* This function is called when there is a warning, but the library thinks |
| * it can continue anyway. Replacement functions don't have to do anything |
| * here if you don't want to. In the default configuration, png_ptr is |
| * not used, but it is passed in case it may be useful. |
| */ |
| typedef struct |
| { |
| const char *file_name; |
| } pngtest_error_parameters; |
| |
| static void PNGCBAPI |
| pngtest_warning(png_structp png_ptr, png_const_charp message) |
| { |
| const char *name = "UNKNOWN (ERROR!)"; |
| pngtest_error_parameters *test = |
| (pngtest_error_parameters*)png_get_error_ptr(png_ptr); |
| |
| ++warning_count; |
| |
| if (test != NULL && test->file_name != NULL) |
| name = test->file_name; |
| |
| fprintf(STDERR, "\n%s: libpng warning: %s\n", name, message); |
| } |
| |
| /* This is the default error handling function. Note that replacements for |
| * this function MUST NOT RETURN, or the program will likely crash. This |
| * function is used by default, or if the program supplies NULL for the |
| * error function pointer in png_set_error_fn(). |
| */ |
| static void PNGCBAPI |
| pngtest_error(png_structp png_ptr, png_const_charp message) |
| { |
| ++error_count; |
| |
| pngtest_warning(png_ptr, message); |
| /* We can return because png_error calls the default handler, which is |
| * actually OK in this case. |
| */ |
| } |
| |
| /* END of code to validate stdio-free compilation */ |
| |
| /* START of code to validate memory allocation and deallocation */ |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| |
| /* Allocate memory. For reasonable files, size should never exceed |
| * 64K. However, zlib may allocate more than 64K if you don't tell |
| * it not to. See zconf.h and png.h for more information. zlib does |
| * need to allocate exactly 64K, so whatever you call here must |
| * have the ability to do that. |
| * |
| * This piece of code can be compiled to validate max 64K allocations |
| * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K. |
| */ |
| typedef struct memory_information |
| { |
| png_alloc_size_t size; |
| png_voidp pointer; |
| struct memory_information *next; |
| } memory_information; |
| typedef memory_information *memory_infop; |
| |
| static memory_infop pinformation = NULL; |
| static int current_allocation = 0; |
| static int maximum_allocation = 0; |
| static int total_allocation = 0; |
| static int num_allocations = 0; |
| |
| png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr, |
| png_alloc_size_t size)); |
| void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr)); |
| |
| png_voidp |
| PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size) |
| { |
| |
| /* png_malloc has already tested for NULL; png_create_struct calls |
| * png_debug_malloc directly, with png_ptr == NULL which is OK |
| */ |
| |
| if (size == 0) |
| return NULL; |
| |
| /* This calls the library allocator twice, once to get the requested |
| buffer and once to get a new free list entry. */ |
| { |
| /* Disable malloc_fn and free_fn */ |
| memory_infop pinfo; |
| png_set_mem_fn(png_ptr, NULL, NULL, NULL); |
| pinfo = (memory_infop)png_malloc(png_ptr, |
| (sizeof *pinfo)); |
| pinfo->size = size; |
| current_allocation += size; |
| total_allocation += size; |
| ++num_allocations; |
| |
| if (current_allocation > maximum_allocation) |
| maximum_allocation = current_allocation; |
| |
| pinfo->pointer = png_malloc(png_ptr, size); |
| /* Restore malloc_fn and free_fn */ |
| |
| png_set_mem_fn(png_ptr, |
| NULL, png_debug_malloc, png_debug_free); |
| |
| if (size != 0 && pinfo->pointer == NULL) |
| { |
| current_allocation -= size; |
| total_allocation -= size; |
| png_error(png_ptr, |
| "out of memory in pngtest->png_debug_malloc"); |
| } |
| |
| pinfo->next = pinformation; |
| pinformation = pinfo; |
| /* Make sure the caller isn't assuming zeroed memory. */ |
| memset(pinfo->pointer, 0xdd, pinfo->size); |
| |
| if (verbose != 0) |
| printf("png_malloc %lu bytes at %p\n", (unsigned long)size, |
| pinfo->pointer); |
| |
| return (png_voidp)pinfo->pointer; |
| } |
| } |
| |
| /* Free a pointer. It is removed from the list at the same time. */ |
| void PNGCBAPI |
| png_debug_free(png_structp png_ptr, png_voidp ptr) |
| { |
| if (png_ptr == NULL) |
| fprintf(STDERR, "NULL pointer to png_debug_free.\n"); |
| |
| if (ptr == 0) |
| { |
| #if 0 /* This happens all the time. */ |
| fprintf(STDERR, "WARNING: freeing NULL pointer\n"); |
| #endif |
| return; |
| } |
| |
| /* Unlink the element from the list. */ |
| if (pinformation != NULL) |
| { |
| memory_infop *ppinfo = &pinformation; |
| |
| for (;;) |
| { |
| memory_infop pinfo = *ppinfo; |
| |
| if (pinfo->pointer == ptr) |
| { |
| *ppinfo = pinfo->next; |
| current_allocation -= pinfo->size; |
| if (current_allocation < 0) |
| fprintf(STDERR, "Duplicate free of memory\n"); |
| /* We must free the list element too, but first kill |
| the memory that is to be freed. */ |
| memset(ptr, 0x55, pinfo->size); |
| free(pinfo); |
| pinfo = NULL; |
| break; |
| } |
| |
| if (pinfo->next == NULL) |
| { |
| fprintf(STDERR, "Pointer %p not found\n", ptr); |
| break; |
| } |
| |
| ppinfo = &pinfo->next; |
| } |
| } |
| |
| /* Finally free the data. */ |
| if (verbose != 0) |
| printf("Freeing %p\n", ptr); |
| |
| if (ptr != NULL) |
| free(ptr); |
| ptr = NULL; |
| } |
| #endif /* USER_MEM && DEBUG */ |
| /* END of code to test memory allocation/deallocation */ |
| |
| |
| #ifdef PNG_READ_USER_CHUNKS_SUPPORTED |
| /* Demonstration of user chunk support of the sTER and vpAg chunks */ |
| |
| /* (sTER is a public chunk not yet known by libpng. vpAg is a private |
| chunk used in ImageMagick to store "virtual page" size). */ |
| |
| typedef struct user_chunk_info_def |
| { |
| png_const_infop info_ptr; |
| png_uint_32 vpAg_width, vpAg_height; |
| png_byte vpAg_units; |
| png_byte sTER_mode; |
| int location[2]; |
| } user_chunk_info; |
| |
| /* Used for location and order; zero means nothing. */ |
| #define have_sTER 0x01 |
| #define have_vpAg 0x02 |
| #define before_PLTE 0x10 |
| #define before_IDAT 0x20 |
| #define after_IDAT 0x40 |
| |
| static void |
| init_user_chunk_info(png_const_infop info_ptr, user_chunk_info *chunk_data) |
| { |
| memset(chunk_data, 0, sizeof(*chunk_data)); |
| chunk_data->info_ptr = info_ptr; |
| } |
| |
| static int |
| set_chunk_location(png_structp png_ptr, user_chunk_info *chunk_data, int what) |
| { |
| int location; |
| |
| if ((chunk_data->location[0] & what) != 0 || |
| (chunk_data->location[1] & what) != 0) |
| return 0; /* we already have one of these */ |
| |
| /* Find where we are (the code below zeroes info_ptr to indicate that the |
| * chunks before the first IDAT have been read.) |
| */ |
| if (chunk_data->info_ptr == NULL) /* after IDAT */ |
| location = what | after_IDAT; |
| |
| else if (png_get_valid(png_ptr, chunk_data->info_ptr, PNG_INFO_PLTE) != 0) |
| location = what | before_IDAT; |
| |
| else |
| location = what | before_PLTE; |
| |
| if (chunk_data->location[0] == 0) |
| chunk_data->location[0] = location; |
| |
| else |
| chunk_data->location[1] = location; |
| |
| return 1; /* handled */ |
| } |
| |
| static int PNGCBAPI |
| read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk) |
| { |
| user_chunk_info *my_user_chunk_data = |
| (user_chunk_info*)png_get_user_chunk_ptr(png_ptr); |
| |
| if (my_user_chunk_data == NULL) |
| png_error(png_ptr, "lost pointer to user chunk data"); |
| |
| /* Return one of the following: |
| * return -n; chunk had an error |
| * return 0; did not recognize |
| * return n; success |
| * |
| * The unknown chunk structure contains the chunk data: |
| * png_byte name[5]; |
| * png_byte *data; |
| * size_t size; |
| * |
| * Note that libpng has already taken care of the CRC handling. |
| */ |
| |
| if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */ |
| chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */ |
| { |
| /* Found sTER chunk */ |
| if (chunk->size != 1) |
| return -1; /* Error return */ |
| |
| if (chunk->data[0] != 0 && chunk->data[0] != 1) |
| return -1; /* Invalid mode */ |
| |
| if (set_chunk_location(png_ptr, my_user_chunk_data, have_sTER) != 0) |
| { |
| my_user_chunk_data->sTER_mode = chunk->data[0]; |
| return 1; |
| } |
| |
| else |
| return 0; /* duplicate sTER - give it to libpng */ |
| } |
| |
| if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */ |
| chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */ |
| return 0; /* Did not recognize */ |
| |
| /* Found ImageMagick vpAg chunk */ |
| |
| if (chunk->size != 9) |
| return -1; /* Error return */ |
| |
| if (set_chunk_location(png_ptr, my_user_chunk_data, have_vpAg) == 0) |
| return 0; /* duplicate vpAg */ |
| |
| my_user_chunk_data->vpAg_width = png_get_uint_31(png_ptr, chunk->data); |
| my_user_chunk_data->vpAg_height = png_get_uint_31(png_ptr, chunk->data + 4); |
| my_user_chunk_data->vpAg_units = chunk->data[8]; |
| |
| return 1; |
| } |
| |
| #ifdef PNG_WRITE_SUPPORTED |
| static void |
| write_sTER_chunk(png_structp write_ptr, user_chunk_info *data) |
| { |
| png_byte sTER[5] = {115, 84, 69, 82, '\0'}; |
| |
| if (verbose != 0) |
| fprintf(STDERR, "\n stereo mode = %d\n", data->sTER_mode); |
| |
| png_write_chunk(write_ptr, sTER, &data->sTER_mode, 1); |
| } |
| |
| static void |
| write_vpAg_chunk(png_structp write_ptr, user_chunk_info *data) |
| { |
| png_byte vpAg[5] = {118, 112, 65, 103, '\0'}; |
| |
| png_byte vpag_chunk_data[9]; |
| |
| if (verbose != 0) |
| fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n", |
| (unsigned long)data->vpAg_width, |
| (unsigned long)data->vpAg_height, |
| data->vpAg_units); |
| |
| png_save_uint_32(vpag_chunk_data, data->vpAg_width); |
| png_save_uint_32(vpag_chunk_data + 4, data->vpAg_height); |
| vpag_chunk_data[8] = data->vpAg_units; |
| png_write_chunk(write_ptr, vpAg, vpag_chunk_data, 9); |
| } |
| |
| static void |
| write_chunks(png_structp write_ptr, user_chunk_info *data, int location) |
| { |
| int i; |
| |
| /* Notice that this preserves the original chunk order, however chunks |
| * intercepted by the callback will be written *after* chunks passed to |
| * libpng. This will actually reverse a pair of sTER chunks or a pair of |
| * vpAg chunks, resulting in an error later. This is not worth worrying |
| * about - the chunks should not be duplicated! |
| */ |
| for (i = 0; i < 2; ++i) |
| { |
| if (data->location[i] == (location | have_sTER)) |
| write_sTER_chunk(write_ptr, data); |
| |
| else if (data->location[i] == (location | have_vpAg)) |
| write_vpAg_chunk(write_ptr, data); |
| } |
| } |
| #endif /* WRITE */ |
| #else /* !READ_USER_CHUNKS */ |
| # define write_chunks(pp,loc) ((void)0) |
| #endif |
| /* END of code to demonstrate user chunk support */ |
| |
| /* START of code to check that libpng has the required text support; this only |
| * checks for the write support because if read support is missing the chunk |
| * will simply not be reported back to pngtest. |
| */ |
| #ifdef PNG_TEXT_SUPPORTED |
| static void |
| pngtest_check_text_support(png_structp png_ptr, png_textp text_ptr, |
| int num_text) |
| { |
| while (num_text > 0) |
| { |
| switch (text_ptr[--num_text].compression) |
| { |
| case PNG_TEXT_COMPRESSION_NONE: |
| break; |
| |
| case PNG_TEXT_COMPRESSION_zTXt: |
| # ifndef PNG_WRITE_zTXt_SUPPORTED |
| ++unsupported_chunks; |
| /* In libpng 1.7 this now does an app-error, so stop it: */ |
| text_ptr[num_text].compression = PNG_TEXT_COMPRESSION_NONE; |
| # endif |
| break; |
| |
| case PNG_ITXT_COMPRESSION_NONE: |
| case PNG_ITXT_COMPRESSION_zTXt: |
| # ifndef PNG_WRITE_iTXt_SUPPORTED |
| ++unsupported_chunks; |
| text_ptr[num_text].compression = PNG_TEXT_COMPRESSION_NONE; |
| # endif |
| break; |
| |
| default: |
| /* This is an error */ |
| png_error(png_ptr, "invalid text chunk compression field"); |
| break; |
| } |
| } |
| } |
| #endif |
| /* END of code to check that libpng has the required text support */ |
| |
| /* Test one file */ |
| static int |
| test_one_file(const char *inname, const char *outname) |
| { |
| static png_FILE_p fpin; |
| static png_FILE_p fpout; /* "static" prevents setjmp corruption */ |
| pngtest_error_parameters error_parameters; |
| png_structp read_ptr; |
| png_infop read_info_ptr, end_info_ptr; |
| #ifdef PNG_WRITE_SUPPORTED |
| png_structp write_ptr; |
| png_infop write_info_ptr; |
| png_infop write_end_info_ptr; |
| #ifdef PNG_WRITE_FILTER_SUPPORTED |
| int interlace_preserved = 1; |
| #endif /* WRITE_FILTER */ |
| #else /* !WRITE */ |
| png_structp write_ptr = NULL; |
| png_infop write_info_ptr = NULL; |
| png_infop write_end_info_ptr = NULL; |
| #endif /* !WRITE */ |
| png_bytep row_buf; |
| png_uint_32 y; |
| png_uint_32 width, height; |
| int bit_depth, color_type; |
| user_chunk_info my_user_chunk_data; |
| int pass, num_passes; |
| |
| row_buf = NULL; |
| error_parameters.file_name = inname; |
| |
| if ((fpin = fopen(inname, "rb")) == NULL) |
| { |
| fprintf(STDERR, "Could not find input file %s\n", inname); |
| return 1; |
| } |
| |
| if ((fpout = fopen(outname, "wb")) == NULL) |
| { |
| fprintf(STDERR, "Could not open output file %s\n", outname); |
| fclose(fpin); |
| return 1; |
| } |
| |
| pngtest_debug("Allocating read and write structures"); |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| read_ptr = |
| png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL, |
| NULL, NULL, NULL, png_debug_malloc, png_debug_free); |
| #else |
| read_ptr = |
| png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); |
| #endif |
| png_set_error_fn(read_ptr, &error_parameters, pngtest_error, |
| pngtest_warning); |
| |
| #ifdef PNG_WRITE_SUPPORTED |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| write_ptr = |
| png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL, |
| NULL, NULL, NULL, png_debug_malloc, png_debug_free); |
| #else |
| write_ptr = |
| png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); |
| #endif |
| png_set_error_fn(write_ptr, &error_parameters, pngtest_error, |
| pngtest_warning); |
| #endif |
| pngtest_debug("Allocating read_info, write_info and end_info structures"); |
| read_info_ptr = png_create_info_struct(read_ptr); |
| end_info_ptr = png_create_info_struct(read_ptr); |
| #ifdef PNG_WRITE_SUPPORTED |
| write_info_ptr = png_create_info_struct(write_ptr); |
| write_end_info_ptr = png_create_info_struct(write_ptr); |
| #endif |
| |
| #ifdef PNG_READ_USER_CHUNKS_SUPPORTED |
| init_user_chunk_info(read_info_ptr, &my_user_chunk_data); |
| png_set_read_user_chunk_fn(read_ptr, &my_user_chunk_data, |
| read_user_chunk_callback); |
| #endif |
| |
| #ifdef PNG_SETJMP_SUPPORTED |
| pngtest_debug("Setting jmpbuf for read struct"); |
| if (setjmp(png_jmpbuf(read_ptr))) |
| { |
| fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname); |
| png_free(read_ptr, row_buf); |
| row_buf = NULL; |
| if (verbose != 0) |
| fprintf(STDERR, " destroy read structs\n"); |
| png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); |
| #ifdef PNG_WRITE_SUPPORTED |
| if (verbose != 0) |
| fprintf(STDERR, " destroy write structs\n"); |
| png_destroy_info_struct(write_ptr, &write_end_info_ptr); |
| png_destroy_write_struct(&write_ptr, &write_info_ptr); |
| #endif |
| fclose(fpin); |
| fclose(fpout); |
| return 1; |
| } |
| |
| #ifdef PNG_WRITE_SUPPORTED |
| pngtest_debug("Setting jmpbuf for write struct"); |
| |
| if (setjmp(png_jmpbuf(write_ptr))) |
| { |
| fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname); |
| png_free(read_ptr, row_buf); |
| row_buf = NULL; |
| if (verbose != 0) |
| fprintf(STDERR, " destroying read structs\n"); |
| png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); |
| if (verbose != 0) |
| fprintf(STDERR, " destroying write structs\n"); |
| png_destroy_info_struct(write_ptr, &write_end_info_ptr); |
| png_destroy_write_struct(&write_ptr, &write_info_ptr); |
| fclose(fpin); |
| fclose(fpout); |
| return 1; |
| } |
| #endif |
| #endif |
| |
| #ifdef PNG_BENIGN_ERRORS_SUPPORTED |
| if (strict != 0) |
| { |
| /* Treat png_benign_error() as errors on read */ |
| png_set_benign_errors(read_ptr, 0); |
| |
| # ifdef PNG_WRITE_SUPPORTED |
| /* Treat them as errors on write */ |
| png_set_benign_errors(write_ptr, 0); |
| # endif |
| |
| /* if strict is not set, then app warnings and errors are treated as |
| * warnings in release builds, but not in unstable builds; this can be |
| * changed with '--relaxed'. |
| */ |
| } |
| |
| else if (relaxed != 0) |
| { |
| /* Allow application (pngtest) errors and warnings to pass */ |
| png_set_benign_errors(read_ptr, 1); |
| |
| /* Turn off CRC checking while reading */ |
| png_set_crc_action(read_ptr, PNG_CRC_QUIET_USE, PNG_CRC_QUIET_USE); |
| |
| #ifdef PNG_IGNORE_ADLER32 |
| /* Turn off ADLER32 checking while reading */ |
| png_set_option(read_ptr, PNG_IGNORE_ADLER32, PNG_OPTION_ON); |
| #endif |
| |
| # ifdef PNG_WRITE_SUPPORTED |
| png_set_benign_errors(write_ptr, 1); |
| # endif |
| |
| } |
| #endif /* BENIGN_ERRORS */ |
| |
| pngtest_debug("Initializing input and output streams"); |
| #ifdef PNG_STDIO_SUPPORTED |
| png_init_io(read_ptr, fpin); |
| # ifdef PNG_WRITE_SUPPORTED |
| png_init_io(write_ptr, fpout); |
| # endif |
| #else |
| png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data); |
| # ifdef PNG_WRITE_SUPPORTED |
| png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data, |
| # ifdef PNG_WRITE_FLUSH_SUPPORTED |
| pngtest_flush); |
| # else |
| NULL); |
| # endif |
| # endif |
| #endif |
| |
| if (status_dots_requested == 1) |
| { |
| #ifdef PNG_WRITE_SUPPORTED |
| png_set_write_status_fn(write_ptr, write_row_callback); |
| #endif |
| png_set_read_status_fn(read_ptr, read_row_callback); |
| } |
| |
| else |
| { |
| #ifdef PNG_WRITE_SUPPORTED |
| png_set_write_status_fn(write_ptr, NULL); |
| #endif |
| png_set_read_status_fn(read_ptr, NULL); |
| } |
| |
| #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED |
| png_set_read_user_transform_fn(read_ptr, read_user_callback); |
| #endif |
| #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED |
| zero_samples = 0; |
| png_set_write_user_transform_fn(write_ptr, count_zero_samples); |
| #endif |
| |
| #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED |
| /* Preserve all the unknown chunks, if possible. If this is disabled, then |
| * even if the png_{get,set}_unknown_chunks stuff is enabled, we can't use |
| * libpng to *save* the unknown chunks on read (because we can't switch the |
| * save option on!) |
| * |
| * Notice that if SET_UNKNOWN_CHUNKS is *not* supported, the reader will |
| * discard all unknown chunks, and the writer will write them all. |
| */ |
| #ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED |
| png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS, |
| NULL, 0); |
| #endif |
| #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED |
| png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS, |
| NULL, 0); |
| #endif |
| #endif |
| |
| pngtest_debug("Reading info struct"); |
| png_read_info(read_ptr, read_info_ptr); |
| |
| #ifdef PNG_READ_USER_CHUNKS_SUPPORTED |
| /* This is a bit of a hack; there is no obvious way in the callback function |
| * to determine that the chunks before the first IDAT have been read, so |
| * remove the info_ptr (which is only used to determine position relative to |
| * PLTE) here to indicate that we are after the IDAT. |
| */ |
| my_user_chunk_data.info_ptr = NULL; |
| #endif |
| |
| pngtest_debug("Transferring info struct"); |
| { |
| int interlace_type, compression_type, filter_type; |
| |
| if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth, |
| &color_type, &interlace_type, &compression_type, &filter_type) != 0) |
| { |
| png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth, |
| color_type, interlace_type, compression_type, filter_type); |
| /* num_passes may not be available below if interlace support is not |
| * provided by libpng for both read and write. |
| */ |
| switch (interlace_type) |
| { |
| case PNG_INTERLACE_NONE: |
| num_passes = 1; |
| break; |
| |
| case PNG_INTERLACE_ADAM7: |
| num_passes = 7; |
| break; |
| |
| default: |
| png_error(read_ptr, "invalid interlace type"); |
| /*NOT REACHED*/ |
| } |
| } |
| |
| else |
| png_error(read_ptr, "png_get_IHDR failed"); |
| } |
| #ifdef PNG_FIXED_POINT_SUPPORTED |
| #ifdef PNG_cHRM_SUPPORTED |
| { |
| png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x, |
| blue_y; |
| |
| if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y, |
| &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0) |
| { |
| png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x, |
| red_y, green_x, green_y, blue_x, blue_y); |
| } |
| } |
| #endif |
| #ifdef PNG_gAMA_SUPPORTED |
| { |
| png_fixed_point gamma; |
| |
| if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma) != 0) |
| png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma); |
| } |
| #endif |
| #else /* Use floating point versions */ |
| #ifdef PNG_FLOATING_POINT_SUPPORTED |
| #ifdef PNG_cHRM_SUPPORTED |
| { |
| double white_x, white_y, red_x, red_y, green_x, green_y, blue_x, |
| blue_y; |
| |
| if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x, |
| &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0) |
| { |
| png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x, |
| red_y, green_x, green_y, blue_x, blue_y); |
| } |
| } |
| #endif |
| #ifdef PNG_gAMA_SUPPORTED |
| { |
| double gamma; |
| |
| if (png_get_gAMA(read_ptr, read_info_ptr, &gamma) != 0) |
| png_set_gAMA(write_ptr, write_info_ptr, gamma); |
| } |
| #endif |
| #endif /* Floating point */ |
| #endif /* Fixed point */ |
| #ifdef PNG_iCCP_SUPPORTED |
| { |
| png_charp name; |
| png_bytep profile; |
| png_uint_32 proflen; |
| int compression_type; |
| |
| if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type, |
| &profile, &proflen) != 0) |
| { |
| png_set_iCCP(write_ptr, write_info_ptr, name, compression_type, |
| profile, proflen); |
| } |
| } |
| #endif |
| #ifdef PNG_sRGB_SUPPORTED |
| { |
| int intent; |
| |
| if (png_get_sRGB(read_ptr, read_info_ptr, &intent) != 0) |
| png_set_sRGB(write_ptr, write_info_ptr, intent); |
| } |
| #endif |
| { |
| png_colorp palette; |
| int num_palette; |
| |
| if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette) != 0) |
| png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette); |
| } |
| #ifdef PNG_bKGD_SUPPORTED |
| { |
| png_color_16p background; |
| |
| if (png_get_bKGD(read_ptr, read_info_ptr, &background) != 0) |
| png_set_bKGD(write_ptr, write_info_ptr, background); |
| } |
| #endif |
| #ifdef PNG_READ_eXIf_SUPPORTED |
| { |
| png_bytep exif = NULL; |
| png_uint_32 exif_length; |
| |
| if (png_get_eXIf_1(read_ptr, read_info_ptr, &exif_length, &exif) != 0) |
| { |
| if (exif_length > 1) |
| fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1], |
| (unsigned long)exif_length); |
| # ifdef PNG_WRITE_eXIf_SUPPORTED |
| png_set_eXIf_1(write_ptr, write_info_ptr, exif_length, exif); |
| # endif |
| } |
| } |
| #endif |
| #ifdef PNG_hIST_SUPPORTED |
| { |
| png_uint_16p hist; |
| |
| if (png_get_hIST(read_ptr, read_info_ptr, &hist) != 0) |
| png_set_hIST(write_ptr, write_info_ptr, hist); |
| } |
| #endif |
| #ifdef PNG_oFFs_SUPPORTED |
| { |
| png_int_32 offset_x, offset_y; |
| int unit_type; |
| |
| if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y, |
| &unit_type) != 0) |
| png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type); |
| } |
| #endif |
| #ifdef PNG_pCAL_SUPPORTED |
| { |
| png_charp purpose, units; |
| png_charpp params; |
| png_int_32 X0, X1; |
| int type, nparams; |
| |
| if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type, |
| &nparams, &units, ¶ms) != 0) |
| png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type, |
| nparams, units, params); |
| } |
| #endif |
| #ifdef PNG_pHYs_SUPPORTED |
| { |
| png_uint_32 res_x, res_y; |
| int unit_type; |
| |
| if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, |
| &unit_type) != 0) |
| png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type); |
| } |
| #endif |
| #ifdef PNG_sBIT_SUPPORTED |
| { |
| png_color_8p sig_bit; |
| |
| if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit) != 0) |
| png_set_sBIT(write_ptr, write_info_ptr, sig_bit); |
| } |
| #endif |
| #ifdef PNG_sCAL_SUPPORTED |
| #if defined(PNG_FLOATING_POINT_SUPPORTED) && \ |
| defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) |
| { |
| int unit; |
| double scal_width, scal_height; |
| |
| if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width, |
| &scal_height) != 0) |
| png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height); |
| } |
| #else |
| #ifdef PNG_FIXED_POINT_SUPPORTED |
| { |
| int unit; |
| png_charp scal_width, scal_height; |
| |
| if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width, |
| &scal_height) != 0) |
| { |
| png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width, |
| scal_height); |
| } |
| } |
| #endif |
| #endif |
| #endif |
| |
| #ifdef PNG_sPLT_SUPPORTED |
| { |
| png_sPLT_tp entries; |
| |
| int num_entries = png_get_sPLT(read_ptr, read_info_ptr, &entries); |
| if (num_entries != 0) |
| png_set_sPLT(write_ptr, write_info_ptr, entries, num_entries); |
| } |
| #endif |
| |
| #ifdef PNG_TEXT_SUPPORTED |
| { |
| png_textp text_ptr; |
| int num_text; |
| |
| if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0) |
| { |
| pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text); |
| |
| pngtest_check_text_support(read_ptr, text_ptr, num_text); |
| |
| if (verbose != 0) |
| { |
| int i; |
| |
| fprintf(STDERR,"\n"); |
| for (i = 0; i < num_text; i++) |
| { |
| fprintf(STDERR," Text compression[%d]=%d\n", |
| i, text_ptr[i].compression); |
| } |
| } |
| |
| png_set_text(write_ptr, write_info_ptr, text_ptr, num_text); |
| } |
| } |
| #endif |
| #ifdef PNG_tIME_SUPPORTED |
| { |
| png_timep mod_time; |
| |
| if (png_get_tIME(read_ptr, read_info_ptr, &mod_time) != 0) |
| { |
| png_set_tIME(write_ptr, write_info_ptr, mod_time); |
| #ifdef PNG_TIME_RFC1123_SUPPORTED |
| if (png_convert_to_rfc1123_buffer(tIME_string, mod_time) != 0) |
| tIME_string[(sizeof tIME_string) - 1] = '\0'; |
| |
| else |
| { |
| strncpy(tIME_string, "*** invalid time ***", (sizeof tIME_string)); |
| tIME_string[(sizeof tIME_string) - 1] = '\0'; |
| } |
| |
| tIME_chunk_present++; |
| #endif /* TIME_RFC1123 */ |
| } |
| } |
| #endif |
| #ifdef PNG_tRNS_SUPPORTED |
| { |
| png_bytep trans_alpha; |
| int num_trans; |
| png_color_16p trans_color; |
| |
| if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans, |
| &trans_color) != 0) |
| { |
| int sample_max = (1 << bit_depth); |
| /* libpng doesn't reject a tRNS chunk with out-of-range samples */ |
| if (!((color_type == PNG_COLOR_TYPE_GRAY && |
| (int)trans_color->gray > sample_max) || |
| (color_type == PNG_COLOR_TYPE_RGB && |
| ((int)trans_color->red > sample_max || |
| (int)trans_color->green > sample_max || |
| (int)trans_color->blue > sample_max)))) |
| png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans, |
| trans_color); |
| } |
| } |
| #endif |
| #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED |
| { |
| png_unknown_chunkp unknowns; |
| int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr, |
| &unknowns); |
| |
| if (num_unknowns != 0) |
| png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns, |
| num_unknowns); |
| } |
| #endif |
| |
| #ifdef PNG_WRITE_SUPPORTED |
| pngtest_debug("Writing info struct"); |
| |
| /* Write the info in two steps so that if we write the 'unknown' chunks here |
| * they go to the correct place. |
| */ |
| png_write_info_before_PLTE(write_ptr, write_info_ptr); |
| |
| write_chunks(write_ptr, &my_user_chunk_data, before_PLTE); /* before PLTE */ |
| |
| png_write_info(write_ptr, write_info_ptr); |
| |
| write_chunks(write_ptr, &my_user_chunk_data, before_IDAT); /* after PLTE */ |
| |
| png_write_info(write_ptr, write_end_info_ptr); |
| |
| write_chunks(write_ptr, &my_user_chunk_data, after_IDAT); /* after IDAT */ |
| |
| #ifdef PNG_COMPRESSION_COMPAT |
| /* Test the 'compatibility' setting here, if it is available. */ |
| png_set_compression(write_ptr, PNG_COMPRESSION_COMPAT); |
| #endif |
| #endif |
| |
| pngtest_debug("Writing row data"); |
| |
| #if defined(PNG_READ_INTERLACING_SUPPORTED) &&\ |
| defined(PNG_WRITE_INTERLACING_SUPPORTED) |
| /* Both must be defined for libpng to be able to handle the interlace, |
| * otherwise it gets handled below by simply reading and writing the passes |
| * directly. |
| */ |
| if (png_set_interlace_handling(read_ptr) != num_passes) |
| png_error(write_ptr, |
| "png_set_interlace_handling(read): wrong pass count "); |
| if (png_set_interlace_handling(write_ptr) != num_passes) |
| png_error(write_ptr, |
| "png_set_interlace_handling(write): wrong pass count "); |
| #else /* png_set_interlace_handling not called on either read or write */ |
| # define calc_pass_height |
| #endif /* not using libpng interlace handling */ |
| |
| #ifdef PNGTEST_TIMING |
| t_stop = (float)clock(); |
| t_misc += (t_stop - t_start); |
| t_start = t_stop; |
| #endif |
| for (pass = 0; pass < num_passes; pass++) |
| { |
| # ifdef calc_pass_height |
| png_uint_32 pass_height; |
| |
| if (num_passes == 7) /* interlaced */ |
| { |
| if (PNG_PASS_COLS(width, pass) > 0) |
| pass_height = PNG_PASS_ROWS(height, pass); |
| |
| else |
| pass_height = 0; |
| } |
| |
| else /* not interlaced */ |
| pass_height = height; |
| # else |
| # define pass_height height |
| # endif |
| |
| pngtest_debug1("Writing row data for pass %d", pass); |
| for (y = 0; y < pass_height; y++) |
| { |
| pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y); |
| |
| row_buf = (png_bytep)png_malloc(read_ptr, |
| png_get_rowbytes(read_ptr, read_info_ptr)); |
| |
| pngtest_debug2("\t%p (%lu bytes)", row_buf, |
| (unsigned long)png_get_rowbytes(read_ptr, read_info_ptr)); |
| |
| png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1); |
| |
| #ifdef PNG_WRITE_SUPPORTED |
| #ifdef PNGTEST_TIMING |
| t_stop = (float)clock(); |
| t_decode += (t_stop - t_start); |
| t_start = t_stop; |
| #endif |
| png_write_rows(write_ptr, (png_bytepp)&row_buf, 1); |
| #ifdef PNGTEST_TIMING |
| t_stop = (float)clock(); |
| t_encode += (t_stop - t_start); |
| t_start = t_stop; |
| #endif |
| #endif /* WRITE */ |
| |
| pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y); |
| png_free(read_ptr, row_buf); |
| row_buf = NULL; |
| } |
| } |
| |
| #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED |
| # ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED |
| png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1); |
| # endif |
| # ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED |
| png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1); |
| # endif |
| #endif |
| |
| pngtest_debug("Reading and writing end_info data"); |
| |
| png_read_end(read_ptr, end_info_ptr); |
| #ifdef PNG_TEXT_SUPPORTED |
| { |
| png_textp text_ptr; |
| int num_text; |
| |
| if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0) |
| { |
| pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text); |
| |
| pngtest_check_text_support(read_ptr, text_ptr, num_text); |
| |
| if (verbose != 0) |
| { |
| int i; |
| |
| fprintf(STDERR,"\n"); |
| for (i = 0; i < num_text; i++) |
| { |
| fprintf(STDERR," Text compression[%d]=%d\n", |
| i, text_ptr[i].compression); |
| } |
| } |
| |
| png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text); |
| } |
| } |
| #endif |
| #ifdef PNG_READ_eXIf_SUPPORTED |
| { |
| png_bytep exif = NULL; |
| png_uint_32 exif_length; |
| |
| if (png_get_eXIf_1(read_ptr, end_info_ptr, &exif_length, &exif) != 0) |
| { |
| if (exif_length > 1) |
| fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1], |
| (unsigned long)exif_length); |
| # ifdef PNG_WRITE_eXIf_SUPPORTED |
| png_set_eXIf_1(write_ptr, write_end_info_ptr, exif_length, exif); |
| # endif |
| } |
| } |
| #endif |
| #ifdef PNG_tIME_SUPPORTED |
| { |
| png_timep mod_time; |
| |
| if (png_get_tIME(read_ptr, end_info_ptr, &mod_time) != 0) |
| { |
| png_set_tIME(write_ptr, write_end_info_ptr, mod_time); |
| #ifdef PNG_TIME_RFC1123_SUPPORTED |
| if (png_convert_to_rfc1123_buffer(tIME_string, mod_time) != 0) |
| tIME_string[(sizeof tIME_string) - 1] = '\0'; |
| |
| else |
| { |
| strncpy(tIME_string, "*** invalid time ***", sizeof tIME_string); |
| tIME_string[(sizeof tIME_string)-1] = '\0'; |
| } |
| |
| tIME_chunk_present++; |
| #endif /* TIME_RFC1123 */ |
| } |
| } |
| #endif |
| #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED |
| { |
| png_unknown_chunkp unknowns; |
| int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr, |
| &unknowns); |
| |
| if (num_unknowns != 0) |
| png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns, |
| num_unknowns); |
| } |
| #endif |
| |
| #ifdef PNG_WRITE_SUPPORTED |
| #ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED |
| /* Normally one would use Z_DEFAULT_STRATEGY for text compression. |
| * This is here just to make pngtest replicate the results from libpng |
| * versions prior to 1.5.4, and to test this new API. |
| */ |
| png_set_text_compression_strategy(write_ptr, Z_FILTERED); |
| #endif |
| |
| /* When the unknown vpAg/sTER chunks are written by pngtest the only way to |
| * do it is to write them *before* calling png_write_end. When unknown |
| * chunks are written by libpng, however, they are written just before IEND. |
| * There seems to be no way round this, however vpAg/sTER are not expected |
| * after IDAT. |
| */ |
| write_chunks(write_ptr, &my_user_chunk_data, after_IDAT); |
| |
| png_write_end(write_ptr, write_end_info_ptr); |
| #endif |
| |
| #ifdef PNG_EASY_ACCESS_SUPPORTED |
| if (verbose != 0) |
| { |
| png_uint_32 iwidth, iheight; |
| iwidth = png_get_image_width(write_ptr, write_info_ptr); |
| iheight = png_get_image_height(write_ptr, write_info_ptr); |
| fprintf(STDERR, "\n Image width = %lu, height = %lu\n", |
| (unsigned long)iwidth, (unsigned long)iheight); |
| } |
| #endif |
| |
| pngtest_debug("Destroying data structs"); |
| pngtest_debug("Destroying read_ptr, read_info_ptr, end_info_ptr"); |
| png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); |
| #ifdef PNG_WRITE_SUPPORTED |
| pngtest_debug("Destroying write_end_info_ptr"); |
| png_destroy_info_struct(write_ptr, &write_end_info_ptr); |
| pngtest_debug("Destroying write_ptr, write_info_ptr"); |
| png_destroy_write_struct(&write_ptr, &write_info_ptr); |
| #endif |
| pngtest_debug("Destruction complete."); |
| |
| fclose(fpin); |
| fclose(fpout); |
| |
| /* Summarize any warnings or errors and in 'strict' mode fail the test. |
| * Unsupported chunks can result in warnings, in that case ignore the strict |
| * setting, otherwise fail the test on warnings as well as errors. |
| */ |
| if (error_count > 0) |
| { |
| /* We don't really expect to get here because of the setjmp handling |
| * above, but this is safe. |
| */ |
| fprintf(STDERR, "\n %s: %d libpng errors found (%d warnings)", |
| inname, error_count, warning_count); |
| |
| if (strict != 0) |
| return 1; |
| } |
| |
| # ifdef PNG_WRITE_SUPPORTED |
| /* If there is no write support nothing was written! */ |
| else if (unsupported_chunks > 0) |
| { |
| fprintf(STDERR, "\n %s: unsupported chunks (%d)%s", |
| inname, unsupported_chunks, strict ? ": IGNORED --strict!" : ""); |
| } |
| # endif |
| |
| else if (warning_count > 0) |
| { |
| fprintf(STDERR, "\n %s: %d libpng warnings found", |
| inname, warning_count); |
| |
| if (strict != 0) |
| return 1; |
| } |
| |
| pngtest_debug("Opening files for comparison"); |
| if ((fpin = fopen(inname, "rb")) == NULL) |
| { |
| fprintf(STDERR, "Could not find file %s\n", inname); |
| return 1; |
| } |
| |
| if ((fpout = fopen(outname, "rb")) == NULL) |
| { |
| fprintf(STDERR, "Could not find file %s\n", outname); |
| fclose(fpin); |
| return 1; |
| } |
| |
| #if defined (PNG_WRITE_SUPPORTED) /* else nothing was written */ &&\ |
| defined (PNG_WRITE_FILTER_SUPPORTED) |
| if (interlace_preserved != 0) /* else the files will be changed */ |
| { |
| for (;;) |
| { |
| static int wrote_question = 0; |
| size_t num_in, num_out; |
| char inbuf[256], outbuf[256]; |
| |
| num_in = fread(inbuf, 1, sizeof inbuf, fpin); |
| num_out = fread(outbuf, 1, sizeof outbuf, fpout); |
| |
| if (num_in != num_out) |
| { |
| fprintf(STDERR, "\nFiles %s and %s are of a different size\n", |
| inname, outname); |
| |
| if (wrote_question == 0 && unsupported_chunks == 0) |
| { |
| fprintf(STDERR, |
| " Was %s written with the same maximum IDAT" |
| " chunk size (%d bytes),", |
| inname, PNG_ZBUF_SIZE); |
| fprintf(STDERR, |
| "\n filtering heuristic (libpng default), compression"); |
| fprintf(STDERR, |
| " level (zlib default),\n and zlib version (%s)?\n\n", |
| ZLIB_VERSION); |
| wrote_question = 1; |
| } |
| |
| fclose(fpin); |
| fclose(fpout); |
| |
| if (strict != 0 && unsupported_chunks == 0) |
| return 1; |
| |
| else |
| return 0; |
| } |
| |
| if (num_in == 0) |
| break; |
| |
| if (memcmp(inbuf, outbuf, num_in)) |
| { |
| fprintf(STDERR, "\nFiles %s and %s are different\n", inname, |
| outname); |
| |
| if (wrote_question == 0 && unsupported_chunks == 0) |
| { |
| fprintf(STDERR, |
| " Was %s written with the same maximum" |
| " IDAT chunk size (%d bytes),", |
| inname, PNG_ZBUF_SIZE); |
| fprintf(STDERR, |
| "\n filtering heuristic (libpng default), compression"); |
| fprintf(STDERR, |
| " level (zlib default),\n and zlib version (%s)?\n\n", |
| ZLIB_VERSION); |
| wrote_question = 1; |
| } |
| |
| fclose(fpin); |
| fclose(fpout); |
| |
| /* NOTE: the unsupported_chunks escape is permitted here because |
| * unsupported text chunk compression will result in the compression |
| * mode being changed (to NONE) yet, in the test case, the result |
| * can be exactly the same size! |
| */ |
| if (strict != 0 && unsupported_chunks == 0) |
| return 1; |
| |
| else |
| return 0; |
| } |
| } |
| } |
| #endif /* WRITE && WRITE_FILTER */ |
| |
| fclose(fpin); |
| fclose(fpout); |
| |
| return 0; |
| } |
| |
| /* Input and output filenames */ |
| #ifdef RISCOS |
| static const char *inname = "pngtest/png"; |
| static const char *outname = "pngout/png"; |
| #else |
| static const char *inname = "pngtest.png"; |
| static const char *outname = "pngout.png"; |
| #endif |
| |
| int |
| main(int argc, char *argv[]) |
| { |
| int multiple = 0; |
| int ierror = 0; |
| |
| png_structp dummy_ptr; |
| |
| fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING); |
| fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION); |
| fprintf(STDERR, "%s", png_get_copyright(NULL)); |
| /* Show the version of libpng used in building the library */ |
| fprintf(STDERR, " library (%lu):%s", |
| (unsigned long)png_access_version_number(), |
| png_get_header_version(NULL)); |
| |
| /* Show the version of libpng used in building the application */ |
| fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER, |
| PNG_HEADER_VERSION_STRING); |
| |
| /* Do some consistency checking on the memory allocation settings, I'm |
| * not sure this matters, but it is nice to know, the first of these |
| * tests should be impossible because of the way the macros are set |
| * in pngconf.h |
| */ |
| #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) |
| fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n"); |
| #endif |
| /* I think the following can happen. */ |
| #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K) |
| fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n"); |
| #endif |
| |
| if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING) != 0) |
| { |
| fprintf(STDERR, "Warning: mismatching versions of png.h and png.c\n"); |
| fprintf(STDERR, " png.h version string: %s\n", PNG_LIBPNG_VER_STRING); |
| fprintf(STDERR, " png.c version string: %s\n\n", png_libpng_ver); |
| ++ierror; |
| } |
| |
| if (argc > 1) |
| { |
| if (strcmp(argv[1], "-m") == 0) |
| { |
| multiple = 1; |
| status_dots_requested = 0; |
| } |
| |
| else if (strcmp(argv[1], "-mv") == 0 || |
| strcmp(argv[1], "-vm") == 0 ) |
| { |
| multiple = 1; |
| verbose = 1; |
| status_dots_requested = 1; |
| } |
| |
| else if (strcmp(argv[1], "-v") == 0) |
| { |
| verbose = 1; |
| status_dots_requested = 1; |
| inname = argv[2]; |
| } |
| |
| else if (strcmp(argv[1], "--strict") == 0) |
| { |
| status_dots_requested = 0; |
| verbose = 1; |
| inname = argv[2]; |
| strict++; |
| relaxed = 0; |
| multiple = 1; |
| } |
| |
| else if (strcmp(argv[1], "--relaxed") == 0) |
| { |
| status_dots_requested = 0; |
| verbose = 1; |
| inname = argv[2]; |
| strict = 0; |
| relaxed++; |
| multiple = 1; |
| } |
| else if (strcmp(argv[1], "--xfail") == 0) |
| { |
| status_dots_requested = 0; |
| verbose = 1; |
| inname = argv[2]; |
| strict = 0; |
| xfail++; |
| relaxed++; |
| multiple = 1; |
| } |
| |
| else |
| { |
| inname = argv[1]; |
| status_dots_requested = 0; |
| } |
| } |
| |
| if (multiple == 0 && argc == 3 + verbose) |
| outname = argv[2 + verbose]; |
| |
| if ((multiple == 0 && argc > 3 + verbose) || |
| (multiple != 0 && argc < 2)) |
| { |
| fprintf(STDERR, |
| "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n", |
| argv[0], argv[0]); |
| fprintf(STDERR, |
| " reads/writes one PNG file (without -m) or multiple files (-m)\n"); |
| fprintf(STDERR, |
| " with -m %s is used as a temporary file\n", outname); |
| exit(1); |
| } |
| |
| if (multiple != 0) |
| { |
| int i; |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| int allocation_now = current_allocation; |
| #endif |
| for (i = 2; i < argc; ++i) |
| { |
| int kerror; |
| fprintf(STDERR, "\n Testing %s:", argv[i]); |
| #if PNG_DEBUG > 0 |
| fprintf(STDERR, "\n"); |
| #endif |
| kerror = test_one_file(argv[i], outname); |
| if (kerror == 0) |
| { |
| #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED |
| fprintf(STDERR, "\n PASS (%lu zero samples)\n", |
| (unsigned long)zero_samples); |
| #else |
| fprintf(STDERR, " PASS\n"); |
| #endif |
| #ifdef PNG_TIME_RFC1123_SUPPORTED |
| if (tIME_chunk_present != 0) |
| fprintf(STDERR, " tIME = %s\n", tIME_string); |
| |
| tIME_chunk_present = 0; |
| #endif /* TIME_RFC1123 */ |
| } |
| |
| else |
| { |
| if (xfail) |
| fprintf(STDERR, " XFAIL\n"); |
| else |
| { |
| fprintf(STDERR, " FAIL\n"); |
| ierror += kerror; |
| } |
| } |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| if (allocation_now != current_allocation) |
| fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n", |
| current_allocation - allocation_now); |
| |
| if (current_allocation != 0) |
| { |
| memory_infop pinfo = pinformation; |
| |
| fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n", |
| current_allocation); |
| |
| while (pinfo != NULL) |
| { |
| fprintf(STDERR, " %lu bytes at %p\n", |
| (unsigned long)pinfo->size, |
| pinfo->pointer); |
| pinfo = pinfo->next; |
| } |
| } |
| #endif |
| } |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| fprintf(STDERR, " Current memory allocation: %10d bytes\n", |
| current_allocation); |
| fprintf(STDERR, " Maximum memory allocation: %10d bytes\n", |
| maximum_allocation); |
| fprintf(STDERR, " Total memory allocation: %10d bytes\n", |
| total_allocation); |
| fprintf(STDERR, " Number of allocations: %10d\n", |
| num_allocations); |
| #endif |
| } |
| |
| else |
| { |
| int i; |
| for (i = 0; i < 3; ++i) |
| { |
| int kerror; |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| int allocation_now = current_allocation; |
| #endif |
| if (i == 1) |
| status_dots_requested = 1; |
| |
| else if (verbose == 0) |
| status_dots_requested = 0; |
| |
| if (i == 0 || verbose == 1 || ierror != 0) |
| { |
| fprintf(STDERR, "\n Testing %s:", inname); |
| #if PNG_DEBUG > 0 |
| fprintf(STDERR, "\n"); |
| #endif |
| } |
| |
| kerror = test_one_file(inname, outname); |
| |
| if (kerror == 0) |
| { |
| if (verbose == 1 || i == 2) |
| { |
| #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED |
| fprintf(STDERR, "\n PASS (%lu zero samples)\n", |
| (unsigned long)zero_samples); |
| #else |
| fprintf(STDERR, " PASS\n"); |
| #endif |
| #ifdef PNG_TIME_RFC1123_SUPPORTED |
| if (tIME_chunk_present != 0) |
| fprintf(STDERR, " tIME = %s\n", tIME_string); |
| #endif /* TIME_RFC1123 */ |
| } |
| } |
| |
| else |
| { |
| if (verbose == 0 && i != 2) |
| { |
| fprintf(STDERR, "\n Testing %s:", inname); |
| #if PNG_DEBUG > 0 |
| fprintf(STDERR, "\n"); |
| #endif |
| } |
| |
| if (xfail) |
| fprintf(STDERR, " XFAIL\n"); |
| else |
| { |
| fprintf(STDERR, " FAIL\n"); |
| ierror += kerror; |
| } |
| } |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| if (allocation_now != current_allocation) |
| fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n", |
| current_allocation - allocation_now); |
| |
| if (current_allocation != 0) |
| { |
| memory_infop pinfo = pinformation; |
| |
| fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n", |
| current_allocation); |
| |
| while (pinfo != NULL) |
| { |
| fprintf(STDERR, " %lu bytes at %p\n", |
| (unsigned long)pinfo->size, pinfo->pointer); |
| pinfo = pinfo->next; |
| } |
| } |
| #endif |
| } |
| #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG |
| fprintf(STDERR, " Current memory allocation: %10d bytes\n", |
| current_allocation); |
| fprintf(STDERR, " Maximum memory allocation: %10d bytes\n", |
| maximum_allocation); |
| fprintf(STDERR, " Total memory allocation: %10d bytes\n", |
| total_allocation); |
| fprintf(STDERR, " Number of allocations: %10d\n", |
| num_allocations); |
| #endif |
| } |
| |
| #ifdef PNGTEST_TIMING |
| t_stop = (float)clock(); |
| t_misc += (t_stop - t_start); |
| t_start = t_stop; |
| fprintf(STDERR, " CPU time used = %.3f seconds", |
| (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC); |
| fprintf(STDERR, " (decoding %.3f,\n", |
| t_decode/(float)CLOCKS_PER_SEC); |
| fprintf(STDERR, " encoding %.3f ,", |
| t_encode/(float)CLOCKS_PER_SEC); |
| fprintf(STDERR, " other %.3f seconds)\n\n", |
| t_misc/(float)CLOCKS_PER_SEC); |
| #endif |
| |
| if (ierror == 0) |
| fprintf(STDERR, " libpng passes test\n"); |
| |
| else |
| fprintf(STDERR, " libpng FAILS test\n"); |
| |
| dummy_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); |
| fprintf(STDERR, " Default limits:\n"); |
| fprintf(STDERR, " width_max = %lu\n", |
| (unsigned long) png_get_user_width_max(dummy_ptr)); |
| fprintf(STDERR, " height_max = %lu\n", |
| (unsigned long) png_get_user_height_max(dummy_ptr)); |
| if (png_get_chunk_cache_max(dummy_ptr) == 0) |
| fprintf(STDERR, " cache_max = unlimited\n"); |
| else |
| fprintf(STDERR, " cache_max = %lu\n", |
| (unsigned long) png_get_chunk_cache_max(dummy_ptr)); |
| if (png_get_chunk_malloc_max(dummy_ptr) == 0) |
| fprintf(STDERR, " malloc_max = unlimited\n"); |
| else |
| fprintf(STDERR, " malloc_max = %lu\n", |
| (unsigned long) png_get_chunk_malloc_max(dummy_ptr)); |
| png_destroy_read_struct(&dummy_ptr, NULL, NULL); |
| |
| return (ierror != 0); |
| } |
| #else |
| int |
| main(void) |
| { |
| fprintf(STDERR, |
| " test ignored because libpng was not built with read support\n"); |
| /* And skip this test */ |
| return SKIP; |
| } |
| #endif |