X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/722813702f33904c59fddc4410b4c62999962ece..7fd80c6f685550715713208680e7d095b03c1632:/src/png/pngtest.c diff --git a/src/png/pngtest.c b/src/png/pngtest.c index c52aef3e6b..144f2db35d 100644 --- a/src/png/pngtest.c +++ b/src/png/pngtest.c @@ -1,8 +1,8 @@ /* pngtest.c - a simple test program to test libpng * - * Last changed in libpng 1.5.6 [November 3, 2011] - * Copyright (c) 1998-2011 Glenn Randers-Pehrson + * Last changed in libpng 1.6.2 [April 25, 2013] + * Copyright (c) 1998-2013 Glenn Randers-Pehrson * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * @@ -33,16 +33,39 @@ #define _POSIX_SOURCE 1 -#include "zlib.h" +#include +#include +#include + +/* Defined so I can write to a file on gui/windowing platforms */ +/* #define STDERR stderr */ +#define STDERR stdout /* For DOS */ + #include "png.h" + +/* 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 1.7 + */ +#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_tEXt_SUPPORTED &&\ + defined PNG_READ_tIME_SUPPORTED &&\ + defined PNG_READ_zTXt_SUPPORTED + +#include "zlib.h" /* Copied from pngpriv.h but only used in error messages below. */ #ifndef PNG_ZBUF_SIZE # define PNG_ZBUF_SIZE 8192 #endif -# include -# include -# include -# define FCLOSE(file) fclose(file) +#define FCLOSE(file) fclose(file) #ifndef PNG_STDIO_SUPPORTED typedef FILE * png_FILE_p; @@ -67,17 +90,6 @@ typedef FILE * png_FILE_p; # define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */ #endif -/* The code uses memcmp and memcpy on large objects (typically row pointers) so - * it is necessary to do soemthing special on certain architectures, note that - * the actual support for this was effectively removed in 1.4, so only the - * memory remains in this program: - */ -#define CVT_PTR(ptr) (ptr) -#define CVT_PTR_NOCHECK(ptr) (ptr) -#define png_memcmp memcmp -#define png_memcpy memcpy -#define png_memset memset - /* Turn on CPU timing #define PNGTEST_TIMING */ @@ -99,30 +111,37 @@ static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present"; static int verbose = 0; static int strict = 0; - -int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname)); +static int relaxed = 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 */ #ifdef __TURBOC__ #include #endif -/* Defined so I can write to a file on gui/windowing platforms */ -/* #define STDERR stderr */ -#define STDERR stdout /* For DOS */ - /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */ #ifndef png_jmpbuf # define png_jmpbuf(png_ptr) png_ptr->jmpbuf #endif +/* Defines for unknown chunk handling if required. */ +#ifndef PNG_HANDLE_CHUNK_ALWAYS +# define PNG_HANDLE_CHUNK_ALWAYS 3 +#endif +#ifndef PNG_HANDLE_CHUNK_IF_SAFE +# define PNG_HANDLE_CHUNK_IF_SAFE 2 +#endif + +/* Utility to save typing/errors, the argument must be a name */ +#define MEMZERO(var) ((void)memset(&var, 0, sizeof var)) + /* 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; -void PNGCBAPI -read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass); -void PNGCBAPI +static void PNGCBAPI read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) { if (png_ptr == NULL || row_number > PNG_UINT_31_MAX) @@ -146,9 +165,8 @@ read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) fprintf(stdout, "r"); } -void PNGCBAPI -write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass); -void PNGCBAPI +#ifdef PNG_WRITE_SUPPORTED +static void PNGCBAPI write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) { if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) @@ -156,6 +174,7 @@ write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) fprintf(stdout, "w"); } +#endif #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED @@ -164,9 +183,7 @@ write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) * 5 in case illegal filter values are present.) */ static png_uint_32 filters_used[256]; -void PNGCBAPI -count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data); -void PNGCBAPI +static void PNGCBAPI count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data) { if (png_ptr != NULL && row_info != NULL) @@ -181,9 +198,7 @@ count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data) static png_uint_32 zero_samples; -void PNGCBAPI -count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data); -void PNGCBAPI +static void PNGCBAPI count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) { png_bytep dp = data; @@ -290,8 +305,6 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) } #endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */ -static int wrote_question = 0; - #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 @@ -344,7 +357,6 @@ pngtest_check_io_state(png_structp png_ptr, png_size_t data_length, } #endif -#ifndef USE_FAR_KEYWORD static void PNGCBAPI pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) { @@ -369,59 +381,6 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) pngtest_check_io_state(png_ptr, length, PNG_IO_READING); #endif } -#else -/* This is the model-independent version. Since the standard I/O library - can't handle far buffers in the medium and small models, we have to copy - the data. -*/ - -#define NEAR_BUF_SIZE 1024 -#define MIN(a,b) (a <= b ? a : b) - -static void PNGCBAPI -pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_size_t check; - png_byte *n_data; - png_FILE_p io_ptr; - - /* Check if data really is near. If so, use usual code. */ - n_data = (png_byte *)CVT_PTR_NOCHECK(data); - io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr)); - if ((png_bytep)n_data == data) - { - check = fread(n_data, 1, length, io_ptr); - } - else - { - png_byte buf[NEAR_BUF_SIZE]; - png_size_t read, remaining, err; - check = 0; - remaining = length; - - do - { - read = MIN(NEAR_BUF_SIZE, remaining); - err = fread(buf, 1, 1, io_ptr); - png_memcpy(data, buf, read); /* Copy far buffer to near buffer */ - if (err != read) - break; - else - check += err; - data += read; - remaining -= read; - } - while (remaining != 0); - } - - 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 -} -#endif /* USE_FAR_KEYWORD */ #ifdef PNG_WRITE_FLUSH_SUPPORTED static void PNGCBAPI @@ -437,7 +396,6 @@ pngtest_flush(png_structp png_ptr) * write_data function and use it at run time with png_set_write_fn(), rather * than changing the library. */ -#ifndef USE_FAR_KEYWORD static void PNGCBAPI pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) { @@ -454,81 +412,31 @@ pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING); #endif } -#else -/* This is the model-independent version. Since the standard I/O library - can't handle far buffers in the medium and small models, we have to copy - the data. -*/ - -#define NEAR_BUF_SIZE 1024 -#define MIN(a,b) (a <= b ? a : b) - -static void PNGCBAPI -pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) -{ - png_size_t check; - png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */ - png_FILE_p io_ptr; - - /* Check if data really is near. If so, use usual code. */ - near_data = (png_byte *)CVT_PTR_NOCHECK(data); - io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr)); - - if ((png_bytep)near_data == data) - { - check = fwrite(near_data, 1, length, io_ptr); - } - - else - { - png_byte buf[NEAR_BUF_SIZE]; - png_size_t written, remaining, err; - check = 0; - remaining = length; - - do - { - written = MIN(NEAR_BUF_SIZE, remaining); - png_memcpy(buf, data, written); /* Copy far buffer to near buffer */ - err = fwrite(buf, 1, written, io_ptr); - if (err != written) - break; - else - check += err; - data += written; - remaining -= written; - } - while (remaining != 0); - } - - 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 /* USE_FAR_KEYWORD */ +#endif /* !PNG_STDIO_SUPPORTED */ /* 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 +{ + PNG_CONST char *file_name; +} pngtest_error_parameters; + static void PNGCBAPI pngtest_warning(png_structp png_ptr, png_const_charp message) { PNG_CONST char *name = "UNKNOWN (ERROR!)"; - char *test; - test = png_get_error_ptr(png_ptr); + pngtest_error_parameters *test = + (pngtest_error_parameters*)png_get_error_ptr(png_ptr); - if (test == NULL) - fprintf(STDERR, "%s: libpng warning: %s\n", name, message); + ++warning_count; - else - fprintf(STDERR, "%s: libpng warning: %s\n", test, message); + if (test != NULL && test->file_name != NULL) + name = test->file_name; + + fprintf(STDERR, "%s: libpng warning: %s\n", name, message); } /* This is the default error handling function. Note that replacements for @@ -539,12 +447,14 @@ pngtest_warning(png_structp png_ptr, png_const_charp message) 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. */ } -#endif /* !PNG_STDIO_SUPPORTED */ + /* END of code to validate stdio-free compilation */ /* START of code to validate memory allocation and deallocation */ @@ -563,9 +473,9 @@ typedef struct memory_information { png_alloc_size_t size; png_voidp pointer; - struct memory_information FAR *next; + struct memory_information *next; } memory_information; -typedef memory_information FAR *memory_infop; +typedef memory_information *memory_infop; static memory_infop pinformation = NULL; static int current_allocation = 0; @@ -595,7 +505,7 @@ PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size) memory_infop pinfo; png_set_mem_fn(png_ptr, NULL, NULL, NULL); pinfo = (memory_infop)png_malloc(png_ptr, - png_sizeof(*pinfo)); + (sizeof *pinfo)); pinfo->size = size; current_allocation += size; total_allocation += size; @@ -621,7 +531,7 @@ PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size) pinfo->next = pinformation; pinformation = pinfo; /* Make sure the caller isn't assuming zeroed memory. */ - png_memset(pinfo->pointer, 0xdd, pinfo->size); + memset(pinfo->pointer, 0xdd, pinfo->size); if (verbose) printf("png_malloc %lu bytes at %p\n", (unsigned long)size, @@ -648,7 +558,7 @@ png_debug_free(png_structp png_ptr, png_voidp ptr) /* Unlink the element from the list. */ { - memory_infop FAR *ppinfo = &pinformation; + memory_infop *ppinfo = &pinformation; for (;;) { @@ -662,7 +572,7 @@ png_debug_free(png_structp png_ptr, png_voidp ptr) fprintf(STDERR, "Duplicate free of memory\n"); /* We must free the list element too, but first kill the memory that is to be freed. */ - png_memset(ptr, 0x55, pinfo->size); + memset(ptr, 0x55, pinfo->size); png_free_default(png_ptr, pinfo); pinfo = NULL; break; @@ -689,25 +599,73 @@ png_debug_free(png_structp png_ptr, png_voidp ptr) /* 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 */ -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED /* (sTER is a public chunk not yet known by libpng. vpAg is a private chunk used in ImageMagick to store "virtual page" size). */ -static png_uint_32 user_chunk_data[4]; +static struct user_chunk_data +{ + 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_data; + +/* 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_callback_info(png_const_infop info_ptr) +{ + MEMZERO(user_chunk_data); + user_chunk_data.info_ptr = info_ptr; +} + +static int +set_location(png_structp png_ptr, struct user_chunk_data *data, int what) +{ + int location; + + if ((data->location[0] & what) || (data->location[1] & what)) + return 0; /* already have one of these */ + + /* Find where we are (the code below zeros info_ptr to indicate that the + * chunks before the first IDAT have been read.) + */ + if (data->info_ptr == NULL) /* after IDAT */ + location = what | after_IDAT; + + else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE)) + location = what | before_IDAT; + + else + location = what | before_PLTE; + + if (data->location[0] == 0) + data->location[0] = location; - /* 0: sTER mode + 1 - * 1: vpAg width - * 2: vpAg height - * 3: vpAg units - */ + else + data->location[1] = location; + + return 1; /* handled */ +} static int PNGCBAPI read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk) { - png_uint_32 - *my_user_chunk_data; + struct user_chunk_data *my_user_chunk_data = + (struct user_chunk_data*)png_get_user_chunk_ptr(png_ptr); + + if (my_user_chunk_data == NULL) + png_error(png_ptr, "lost user chunk pointer"); /* Return one of the following: * return (-n); chunk had an error @@ -732,9 +690,14 @@ static int PNGCBAPI read_user_chunk_callback(png_struct *png_ptr, if (chunk->data[0] != 0 && chunk->data[0] != 1) return (-1); /* Invalid mode */ - my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); - my_user_chunk_data[0]=chunk->data[0]+1; - return (1); + if (set_location(png_ptr, my_user_chunk_data, have_sTER)) + { + 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 */ @@ -746,24 +709,119 @@ static int PNGCBAPI read_user_chunk_callback(png_struct *png_ptr, if (chunk->size != 9) return (-1); /* Error return */ - my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); + if (!set_location(png_ptr, my_user_chunk_data, have_vpAg)) + return (0); /* duplicate vpAg */ - my_user_chunk_data[1]=png_get_uint_31(png_ptr, chunk->data); - my_user_chunk_data[2]=png_get_uint_31(png_ptr, chunk->data + 4); - my_user_chunk_data[3]=(png_uint_32)chunk->data[8]; + 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) +{ + png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}; + + if (verbose) + fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode); + + png_write_chunk(write_ptr, png_sTER, &user_chunk_data.sTER_mode, 1); +} + +static void +write_vpAg_chunk(png_structp write_ptr) +{ + png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'}; + + png_byte vpag_chunk_data[9]; + + if (verbose) + fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n", + (unsigned long)user_chunk_data.vpAg_width, + (unsigned long)user_chunk_data.vpAg_height, + user_chunk_data.vpAg_units); + + png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width); + png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height); + vpag_chunk_data[8] = user_chunk_data.vpAg_units; + png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9); +} + +static void +write_chunks(png_structp write_ptr, 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 (user_chunk_data.location[i] == (location | have_sTER)) + write_sTER_chunk(write_ptr); + + else if (user_chunk_data.location[i] == (location | have_vpAg)) + write_vpAg_chunk(write_ptr); + } } +#endif /* PNG_WRITE_SUPPORTED */ +#else /* !PNG_READ_USER_CHUNKS_SUPPORTED */ +# 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_const_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; +# endif + break; + + case PNG_ITXT_COMPRESSION_NONE: + case PNG_ITXT_COMPRESSION_zTXt: +# ifndef PNG_WRITE_iTXt_SUPPORTED + ++unsupported_chunks; +# 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 */ -int +static int test_one_file(PNG_CONST char *inname, PNG_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 @@ -780,15 +838,9 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_uint_32 width, height; int num_pass, pass; int bit_depth, color_type; -#ifdef PNG_SETJMP_SUPPORTED -#ifdef USE_FAR_KEYWORD - jmp_buf tmp_jmpbuf; -#endif -#endif - - char inbuf[256], outbuf[256]; row_buf = NULL; + error_parameters.file_name = inname; if ((fpin = fopen(inname, "rb")) == NULL) { @@ -812,20 +864,9 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); #endif -#ifndef PNG_STDIO_SUPPORTED - png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error, - pngtest_warning); -#endif - -#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED - user_chunk_data[0] = 0; - user_chunk_data[1] = 0; - user_chunk_data[2] = 0; - user_chunk_data[3] = 0; - png_set_read_user_chunk_fn(read_ptr, user_chunk_data, - read_user_chunk_callback); + png_set_error_fn(read_ptr, &error_parameters, pngtest_error, + pngtest_warning); -#endif #ifdef PNG_WRITE_SUPPORTED #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG write_ptr = @@ -835,10 +876,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); #endif -#ifndef PNG_STDIO_SUPPORTED - png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error, - pngtest_warning); -#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); @@ -848,13 +887,15 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) write_end_info_ptr = png_create_info_struct(write_ptr); #endif +#ifdef PNG_READ_USER_CHUNKS_SUPPORTED + init_callback_info(read_info_ptr); + png_set_read_user_chunk_fn(read_ptr, &user_chunk_data, + read_user_chunk_callback); +#endif + #ifdef PNG_SETJMP_SUPPORTED pngtest_debug("Setting jmpbuf for read struct"); -#ifdef USE_FAR_KEYWORD - if (setjmp(tmp_jmpbuf)) -#else if (setjmp(png_jmpbuf(read_ptr))) -#endif { fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname); png_free(read_ptr, row_buf); @@ -868,18 +909,11 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) FCLOSE(fpout); return (1); } -#ifdef USE_FAR_KEYWORD - png_memcpy(png_jmpbuf(read_ptr), tmp_jmpbuf, png_sizeof(jmp_buf)); -#endif #ifdef PNG_WRITE_SUPPORTED pngtest_debug("Setting jmpbuf for write struct"); -#ifdef USE_FAR_KEYWORD - if (setjmp(tmp_jmpbuf)) -#else if (setjmp(png_jmpbuf(write_ptr))) -#endif { fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname); png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); @@ -891,12 +925,34 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) FCLOSE(fpout); return (1); } - -#ifdef USE_FAR_KEYWORD - png_memcpy(png_jmpbuf(write_ptr), tmp_jmpbuf, png_sizeof(jmp_buf)); #endif #endif + + if (strict) + { + /* 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) + { + /* Allow application (pngtest) errors and warnings to pass */ + png_set_benign_errors(read_ptr, 1); + +#ifdef PNG_WRITE_SUPPORTED + png_set_benign_errors(write_ptr, 1); #endif + } pngtest_debug("Initializing input and output streams"); #ifdef PNG_STDIO_SUPPORTED @@ -916,14 +972,6 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) # endif #endif -#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 - if (status_dots_requested == 1) { #ifdef PNG_WRITE_SUPPORTED @@ -955,24 +1003,37 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) png_set_write_user_transform_fn(write_ptr, count_zero_samples); #endif -#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED -# ifndef PNG_HANDLE_CHUNK_ALWAYS -# define PNG_HANDLE_CHUNK_ALWAYS 3 -# 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 read will discard all + * unknown chunks and write 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 -# ifndef PNG_HANDLE_CHUNK_IF_SAFE -# define PNG_HANDLE_CHUNK_IF_SAFE 2 -# endif - png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_IF_SAFE, + 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. + */ + user_chunk_data.info_ptr = NULL; +#endif + pngtest_debug("Transferring info struct"); { int interlace_type, compression_type, filter_type; @@ -1128,7 +1189,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) } #endif #ifdef PNG_sCAL_SUPPORTED -#ifdef PNG_FLOATING_POINT_SUPPORTED +#if defined(PNG_FLOATING_POINT_SUPPORTED) && \ + defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) { int unit; double scal_width, scal_height; @@ -1164,8 +1226,19 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) { pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text); + pngtest_check_text_support(read_ptr, text_ptr, num_text); + if (verbose) - printf("\nText compression=%d\n", text_ptr->compression); + { + int i; + + printf("\n"); + for (i=0; i 0) { pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text); + + pngtest_check_text_support(read_ptr, text_ptr, num_text); + + if (verbose) + { + int i; + + printf("\n"); + for (i=0; i 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 we 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) { @@ -1457,71 +1574,85 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) return (1); } - for (;;) +#ifdef PNG_WRITE_SUPPORTED /* else nothing was written */ { - png_size_t num_in, num_out; - - num_in = fread(inbuf, 1, 1, fpin); - num_out = fread(outbuf, 1, 1, fpout); + int wrote_question = 0; - if (num_in != num_out) + for (;;) { - fprintf(STDERR, "\nFiles %s and %s are of a different size\n", - inname, outname); + png_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 (wrote_question == 0) + if (num_in != num_out) { - 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; - } + fprintf(STDERR, "\nFiles %s and %s are of a different size\n", + inname, outname); - FCLOSE(fpin); - FCLOSE(fpout); + 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; + } - if (strict != 0) - return (1); + FCLOSE(fpin); + FCLOSE(fpout); - else - return (0); - } + if (strict != 0 && unsupported_chunks == 0) + return (1); - if (!num_in) - break; + else + return (0); + } - if (png_memcmp(inbuf, outbuf, num_in)) - { - fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname); + if (!num_in) + break; - if (wrote_question == 0) + if (memcmp(inbuf, outbuf, num_in)) { - fprintf(STDERR, + 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; - } + 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); + FCLOSE(fpin); + FCLOSE(fpout); - if (strict != 0) - return (1); + /* 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); + else + return (0); + } } } +#endif /* PNG_WRITE_SUPPORTED */ FCLOSE(fpin); FCLOSE(fpout); @@ -1607,6 +1738,16 @@ main(int argc, char *argv[]) verbose = 1; inname = argv[2]; strict++; + relaxed = 0; + } + + else if (strcmp(argv[1], "--relaxed") == 0) + { + status_dots_requested = 0; + verbose = 1; + inname = argv[2]; + strict = 0; + relaxed++; } else @@ -1815,6 +1956,16 @@ main(int argc, char *argv[]) return (int)(ierror != 0); } +#else +int +main(void) +{ + fprintf(STDERR, + " test ignored because libpng was not built with read support\n"); + /* And skip this test */ + return 77; +} +#endif /* Generate a compiler error if there is an old png.h in the search path. */ -typedef png_libpng_version_1_5_7 Your_png_h_is_not_version_1_5_7; +typedef png_libpng_version_1_6_2 Your_png_h_is_not_version_1_6_2;