X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c801d85f158c4cba50b588807daabdcbd0ed3853..74a8f67d96591cec101def2a7d47c64072aff7fd:/src/png/pngtest.c diff --git a/src/png/pngtest.c b/src/png/pngtest.c index 22cbcb3ea2..6317751cae 100644 --- a/src/png/pngtest.c +++ b/src/png/pngtest.c @@ -1,12 +1,14 @@ /* pngtest.c - a simple test program to test libpng * - * libpng 1.0.1 - * For conditions of distribution and use, see copyright notice in png.h - * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. - * Copyright (c) 1996, 1997 Andreas Dilger - * Copyright (c) 1998, Glenn Randers-Pehrson - * March 15, 1998 + * Last changed in libpng 1.4.1 [February 25, 2010] + * Copyright (c) 1998-2010 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.) + * + * 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 @@ -14,28 +16,61 @@ * properly. It does not currently test all of the transforms, although * it probably should. * - * The program will fail in certain legitimate cases: + * The program will report "FAIL" in certain legitimate cases: * 1) when the compression level or filter selection method is changed. - * 2) when the chunk size is smaller than 8K. - * 3) unknown ancillary chunks exist in the input file. + * 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 images are. + * 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. + * 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 ..." */ -#include -#include +#include "png.h" +#include "pngpriv.h" + +# include +# include +# define FCLOSE(file) fclose(file) + +#ifndef PNG_STDIO_SUPPORTED + typedef FILE * png_FILE_p; +#endif /* Makes pngtest verbose so we can find problems (needs to be before png.h) */ #ifndef PNG_DEBUG -#define PNG_DEBUG 0 +# define PNG_DEBUG 0 #endif -#include "png.h" +#if !PNG_DEBUG +# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */ +#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 +#endif + +#ifdef PNG_TIME_RFC1123_SUPPORTED +#define PNG_tIME_STRING_LENGTH 29 +static int tIME_chunk_present = 0; +static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present"; +#endif + +static int verbose = 0; int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname)); @@ -43,55 +78,90 @@ int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname)); #include #endif -/* defined so I can write to a file on gui/windowing platforms */ +/* Defined so I can write to a file on gui/windowing platforms */ /* #define STDERR stderr */ -#define STDERR stdout /* for DOS */ +#define STDERR stdout /* For DOS */ -/* 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; +/* In case a system header (e.g., on AIX) defined jmpbuf */ +#ifdef jmpbuf +# undef jmpbuf +#endif + +/* 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 +/* 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 +read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass); void read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) { - if(png_ptr == NULL || row_number > 0x3fffffffL) return; - if(status_pass != pass) - { - fprintf(stdout,"\n Pass %d: ",pass); - status_pass = pass; - status_dots = 30; - } - status_dots--; - if(status_dots == 0) - { - fprintf(stdout, "\n "); - status_dots=30; - } - fprintf(stdout, "r"); + if (png_ptr == NULL || row_number > PNG_UINT_31_MAX) + return; + 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"); } +void +write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass); void write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass) { - if(png_ptr == NULL || row_number > 0x3fffffffL || pass > 7) return; - fprintf(stdout, "w"); + if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7) + return; + fprintf(stdout, "w"); } -#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) -/* example of using user transform callback (we don't transform anything, - but merely count the black pixels) */ +#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED +/* Example of using user transform callback (we don't transform anything, + * but merely examine the row filters. We set this to 256 rather than + * 5 in case illegal filter values are present.) + */ +static png_uint_32 filters_used[256]; +void +count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data); +void +count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data) +{ + if (png_ptr != NULL && row_info != NULL) + ++filters_used[*(data - 1)]; +} +#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 black_pixels; +static png_uint_32 zero_samples; void -count_black_pixels(png_structp png_ptr, png_row_infop row_info, png_bytep data) +count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data); +void +count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data) { png_bytep dp = data; - if(png_ptr == NULL)return; + if (png_ptr == NULL)return; - /* contents of row_info: + /* 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 @@ -100,120 +170,139 @@ count_black_pixels(png_structp png_ptr, png_row_infop row_info, png_bytep data) * png_byte pixel_depth bits per pixel (depth*channels) */ - /* counts the number of black pixels (or zero pixels if color_type is 3 */ + /* 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) + if (row_info->color_type == 0 || row_info->color_type == 3) { - int pos=0; - png_uint_32 n; - for (n=0; nwidth; n++) + int pos = 0; + png_uint_32 n, nstop; + for (n = 0, nstop=row_info->width; nbit_depth == 1) - if(((*dp << pos++ )& 0x80) == 0) black_pixels++; - if(pos == 8) + if (row_info->bit_depth == 1) + { + if (((*dp << pos++ ) & 0x80) == 0) + zero_samples++; + if (pos == 8) { - pos=0; + pos = 0; dp++; } - if(row_info->bit_depth == 2) - if(((*dp << (pos+=2))& 0xc0) == 0) black_pixels++; - if(pos == 8) + } + if (row_info->bit_depth == 2) + { + if (((*dp << (pos+=2)) & 0xc0) == 0) + zero_samples++; + if (pos == 8) { - pos=0; + pos = 0; dp++; } - if(row_info->bit_depth == 4) - if(((*dp << (pos+=4))& 0xf0) == 0) black_pixels++; - if(pos == 8) + } + if (row_info->bit_depth == 4) + { + if (((*dp << (pos+=4)) & 0xf0) == 0) + zero_samples++; + if (pos == 8) { - pos=0; + pos = 0; dp++; } - if(row_info->bit_depth == 8) - if(*dp++ == 0) black_pixels++; - if(row_info->bit_depth == 16) + } + if (row_info->bit_depth == 8) + if (*dp++ == 0) + zero_samples++; + if (row_info->bit_depth == 16) { - if((*dp | *(dp+1)) == 0) black_pixels++; + if ((*dp | *(dp+1)) == 0) + zero_samples++; dp+=2; } } } - else /* other color types */ + else /* Other color types */ { - png_uint_32 n; + png_uint_32 n, nstop; int channel; int color_channels = row_info->channels; - if(row_info->color_type > 3)color_channels--; + if (row_info->color_type > 3)color_channels--; - for (n=0; nwidth; n++) + for (n = 0, nstop=row_info->width; nbit_depth == 8) - if(*dp++ == 0) black_pixels++; - if(row_info->bit_depth == 16) + if (row_info->bit_depth == 8) + if (*dp++ == 0) + zero_samples++; + if (row_info->bit_depth == 16) { - if((*dp | *(dp+1)) == 0) black_pixels++; + if ((*dp | *(dp+1)) == 0) + zero_samples++; dp+=2; } } - if(row_info->color_type > 3) + if (row_info->color_type > 3) { dp++; - if(row_info->bit_depth == 16)dp++; + if (row_info->bit_depth == 16) + dp++; } } } } #endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */ -static int verbose = 0; static int wrote_question = 0; -#if defined(PNG_NO_STDIO) +#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 which 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. */ +/* 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. + */ + #ifndef USE_FAR_KEYWORD static void -png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) +pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) { - png_size_t check; + png_size_t check = 0; + png_voidp io_ptr; /* fread() returns 0 on error, so it is OK to store this in a png_size_t * instead of an int, which is what fread() actually returns. */ - check = (png_size_t)fread(data, (png_size_t)1, length, - (FILE *)png_ptr->io_ptr); + 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"); + png_error(png_ptr, "Read Error!"); } } #else -/* this is the model-independent version. Since the standard I/O library +/* 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 -png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) +pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length) { - int check; + png_size_t check; png_byte *n_data; - FILE *io_ptr; + 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 = (FILE *)CVT_PTR(png_ptr->io_ptr); + 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); @@ -227,9 +316,9 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) do { read = MIN(NEAR_BUF_SIZE, remaining); - err = fread(buf, (png_size_t)1, read, io_ptr); - png_memcpy(data, buf, read); /* copy far buffer to near buffer */ - if(err != read) + 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; @@ -239,41 +328,40 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length) while (remaining != 0); } if (check != length) - { png_error(png_ptr, "read Error"); - } } #endif /* USE_FAR_KEYWORD */ -#if defined(PNG_WRITE_FLUSH_SUPPORTED) +#ifdef PNG_WRITE_FLUSH_SUPPORTED static void -png_default_flush(png_structp png_ptr) +pngtest_flush(png_structp png_ptr) { - FILE *io_ptr; - io_ptr = (FILE *)CVT_PTR((png_ptr->io_ptr)); - if (io_ptr != NULL) - fflush(io_ptr); + /* Do nothing; fflush() is said to be just a waste of energy. */ + png_ptr = png_ptr; /* Stifle compiler warning */ } #endif -/* This is the function which 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. */ +/* 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. + */ #ifndef USE_FAR_KEYWORD static void -png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) +pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) { - png_uint_32 check; + png_size_t check; + png_FILE_p io_ptr; + io_ptr = (png_FILE_p)CVT_PTR(png_get_io_ptr(png_ptr)); - check = fwrite(data, 1, length, (FILE *)(png_ptr->io_ptr)); + check = fwrite(data, 1, length, io_ptr); if (check != length) { png_error(png_ptr, "Write Error"); } } #else -/* this is the model-independent version. Since the standard I/O library +/* 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. */ @@ -282,15 +370,15 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) #define MIN(a,b) (a <= b ? a : b) static void -png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) +pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length) { - png_uint_32 check; + png_size_t check; png_byte *near_data; /* Needs to be "png_byte *" instead of "png_bytep" */ - FILE *io_ptr; + 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 = (FILE *)CVT_PTR(png_ptr->io_ptr); + io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr); if ((png_bytep)near_data == data) { check = fwrite(near_data, 1, length, io_ptr); @@ -304,7 +392,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) do { written = MIN(NEAR_BUF_SIZE, remaining); - png_memcpy(buf, data, written); /* copy far buffer to near buffer */ + png_memcpy(buf, data, written); /* Copy far buffer to near buffer */ err = fwrite(buf, 1, written, io_ptr); if (err != written) break; @@ -320,7 +408,6 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) png_error(png_ptr, "Write Error"); } } - #endif /* USE_FAR_KEYWORD */ /* This function is called when there is a warning, but the library thinks @@ -329,12 +416,15 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length) * not used, but it is passed in case it may be useful. */ static void -png_default_warning(png_structp png_ptr, png_const_charp message) +pngtest_warning(png_structp png_ptr, png_const_charp message) { PNG_CONST char *name = "UNKNOWN (ERROR!)"; - if (png_ptr != NULL && png_ptr->error_ptr != NULL) - name = png_ptr->error_ptr; - fprintf(STDERR, "%s: libpng warning: %s\n", name, message); + char *test; + test = png_get_error_ptr(png_ptr); + if (test == NULL) + fprintf(STDERR, "%s: libpng warning: %s\n", name, message); + else + fprintf(STDERR, "%s: libpng warning: %s\n", test, message); } /* This is the default error handling function. Note that replacements for @@ -343,33 +433,32 @@ png_default_warning(png_structp png_ptr, png_const_charp message) * error function pointer in png_set_error_fn(). */ static void -png_default_error(png_structp png_ptr, png_const_charp message) +pngtest_error(png_structp png_ptr, png_const_charp message) { - png_default_warning(png_ptr, message); - /* We can return because png_error calls the default handler which is - * actually ok in this case. */ + pngtest_warning(png_ptr, message); + /* We can return because png_error calls the default handler, which is + * actually OK in this case. + */ } -#endif /* PNG_NO_STDIO */ +#endif /* !PNG_STDIO_SUPPORTED */ /* END of code to validate stdio-free compilation */ /* START of code to validate memory allocation and deallocation */ -#ifdef PNGTEST_MEMORY_DEBUG -/* Borland DOS special memory handler */ -#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__) -ERROR - memory debugging is not supported on this platform -#else +#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG /* Allocate memory. For reasonable files, size should never exceed - 64K. However, zlib may allocate more then 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_uint_32 size; - png_voidp pointer; + * 64K. However, zlib may allocate more then 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 FAR *next; } memory_information; typedef memory_information FAR *memory_infop; @@ -377,45 +466,68 @@ typedef memory_information FAR *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; -extern PNG_EXPORT(png_voidp,png_debug_malloc) PNGARG((png_structp png_ptr, - png_uint_32 size)); -extern PNG_EXPORT(void,png_debug_free) PNGARG((png_structp png_ptr, - png_voidp ptr)); +png_voidp png_debug_malloc + PNGARG((png_structp png_ptr, png_alloc_size_t size)); +void png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr)); png_voidp -png_malloc(png_structp png_ptr, png_uint_32 size) { - if (png_ptr == NULL) { - fprintf(STDERR, "NULL pointer to memory allocator\n"); - return (NULL); - } +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 (png_voidp)(NULL); + return (NULL); /* This calls the library allocator twice, once to get the requested buffer and once to get a new free list entry. */ { - memory_infop pinfo = png_debug_malloc(png_ptr, sizeof *pinfo); + /* 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, + png_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_debug_malloc(png_ptr, size); + 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. */ png_memset(pinfo->pointer, 0xdd, pinfo->size); + if (verbose) + printf("png_malloc %lu bytes at %x\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 -png_free(png_structp png_ptr, png_voidp ptr) +png_debug_free(png_structp png_ptr, png_voidp ptr) { if (png_ptr == NULL) - fprintf(STDERR, "NULL pointer to memory allocator\n"); - if (ptr == 0) { + 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 @@ -425,21 +537,25 @@ png_free(png_structp png_ptr, png_voidp ptr) /* Unlink the element from the list. */ { memory_infop FAR *ppinfo = &pinformation; - for (;;) { + for (;;) + { memory_infop pinfo = *ppinfo; - if (pinfo->pointer == ptr) { + 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 which is to be freed. */ - memset(ptr, 0x55, pinfo->size); - png_debug_free(png_ptr, pinfo); + the memory that is to be freed. */ + png_memset(ptr, 0x55, pinfo->size); + png_free_default(png_ptr, pinfo); + pinfo = NULL; break; } - if (pinfo->next == NULL) { - fprintf(STDERR, "Pointer %x not found\n", ptr); + if (pinfo->next == NULL) + { + fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr); break; } ppinfo = &pinfo->next; @@ -447,31 +563,113 @@ png_free(png_structp png_ptr, png_voidp ptr) } /* Finally free the data. */ - png_debug_free(png_ptr, ptr); + if (verbose) + printf("Freeing %x\n", ptr); + png_free_default(png_ptr, ptr); + ptr = NULL; } -#endif /* Not Borland DOS special memory handler */ -#endif +#endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */ /* END of code to test memory allocation/deallocation */ + +/* 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]; + + /* 0: sTER mode + 1 + * 1: vpAg width + * 2: vpAg height + * 3: vpAg units + */ + +static int read_user_chunk_callback(png_struct *png_ptr, + png_unknown_chunkp chunk) +{ + png_uint_32 + *my_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; + * png_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 */ + 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 (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 */ + + my_user_chunk_data=(png_uint_32 *) png_get_user_chunk_ptr(png_ptr); + + 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]; + + return (1); + +} +#endif +/* END of code to demonstrate user chunk support */ + /* Test one file */ int test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) { - static FILE *fpin, *fpout; /* "static" prevents setjmp corruption */ - png_structp read_ptr, write_ptr; - png_infop read_info_ptr, write_info_ptr, end_info_ptr; + static png_FILE_p fpin; + static png_FILE_p fpout; /* "static" prevents setjmp corruption */ + 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; +#else + png_structp write_ptr = NULL; + png_infop write_info_ptr = NULL; + png_infop write_end_info_ptr = NULL; +#endif png_bytep row_buf; png_uint_32 y; png_uint_32 width, height; int num_pass, pass; int bit_depth, color_type; +#ifdef PNG_SETJMP_SUPPORTED #ifdef USE_FAR_KEYWORD jmp_buf jmpbuf; -#endif - +#endif +#endif + char inbuf[256], outbuf[256]; - row_buf = (png_bytep)NULL; + row_buf = NULL; if ((fpin = fopen(inname, "rb")) == NULL) { @@ -482,95 +680,168 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) if ((fpout = fopen(outname, "wb")) == NULL) { fprintf(STDERR, "Could not open output file %s\n", outname); - fclose(fpin); + FCLOSE(fpin); return (1); } - png_debug(0, "Allocating read and write structures\n"); - read_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL, - (png_error_ptr)NULL, (png_error_ptr)NULL); -#if defined(PNG_NO_STDIO) - png_set_error_fn(read_ptr, (png_voidp)inname, png_default_error, - png_default_warning); + png_debug(0, "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_malloc_ptr)png_debug_malloc, (png_free_ptr)png_debug_free); +#else + 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); + +#endif +#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 +#ifndef PNG_STDIO_SUPPORTED + png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error, + pngtest_warning); #endif - write_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, (png_voidp)NULL, - (png_error_ptr)NULL, (png_error_ptr)NULL); -#if defined(PNG_NO_STDIO) - png_set_error_fn(write_ptr, (png_voidp)inname, png_default_error, - png_default_warning); #endif - png_debug(0, "Allocating read_info, write_info and end_info structures\n"); + png_debug(0, "Allocating read_info, write_info and end_info structures"); read_info_ptr = png_create_info_struct(read_ptr); - write_info_ptr = png_create_info_struct(write_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 - png_debug(0, "Setting jmpbuf for read struct\n"); +#ifdef PNG_SETJMP_SUPPORTED + png_debug(0, "Setting jmpbuf for read struct"); #ifdef USE_FAR_KEYWORD if (setjmp(jmpbuf)) #else - if (setjmp(read_ptr->jmpbuf)) + if (setjmp(png_jmpbuf(read_ptr))) #endif { fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname); + png_free(read_ptr, row_buf); + row_buf = NULL; png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr); +#ifdef PNG_WRITE_SUPPORTED + png_destroy_info_struct(write_ptr, &write_end_info_ptr); png_destroy_write_struct(&write_ptr, &write_info_ptr); - fclose(fpin); - fclose(fpout); +#endif + FCLOSE(fpin); + FCLOSE(fpout); return (1); } +#ifdef USE_FAR_KEYWORD + png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf)); +#endif - png_debug(0, "Setting jmpbuf for write struct\n"); +#ifdef PNG_WRITE_SUPPORTED + png_debug(0, "Setting jmpbuf for write struct"); #ifdef USE_FAR_KEYWORD - png_memcpy(read_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf)); if (setjmp(jmpbuf)) #else - if (setjmp(write_ptr->jmpbuf)) + 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); + png_destroy_info_struct(write_ptr, &write_end_info_ptr); +#ifdef PNG_WRITE_SUPPORTED png_destroy_write_struct(&write_ptr, &write_info_ptr); - fclose(fpin); - fclose(fpout); +#endif + FCLOSE(fpin); + FCLOSE(fpout); return (1); } - #ifdef USE_FAR_KEYWORD - png_memcpy(write_ptr->jmpbuf,jmpbuf,sizeof(jmp_buf)); + png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf)); #endif - png_debug(0, "Initializing input and output streams\n"); -#if !defined(PNG_NO_STDIO) +#endif +#endif + + png_debug(0, "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, png_default_read_data); - png_set_write_fn(write_ptr, (png_voidp)fpout, png_default_write_data, -#if defined(PNG_WRITE_FLUSH_SUPPORTED) - png_default_flush); -#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 -#endif - if(status_dots_requested == 1) + 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); } -# if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) - black_pixels=0; - png_set_write_user_transform_fn(write_ptr, count_black_pixels); +#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED + { + int i; + for (i = 0; i<256; i++) + filters_used[i] = 0; + png_set_read_user_transform_fn(read_ptr, count_filters); + } +#endif +#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED + zero_samples = 0; + 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 + 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, + NULL, 0); +#endif - png_debug(0, "Reading info struct\n"); + png_debug(0, "Reading info struct"); png_read_info(read_ptr, read_info_ptr); - png_debug(0, "Transferring info struct\n"); + png_debug(0, "Transferring info struct"); { int interlace_type, compression_type, filter_type; @@ -578,27 +849,40 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) &color_type, &interlace_type, &compression_type, &filter_type)) { png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth, -#if defined(PNG_WRITE_INTERLACING_SUPPORTED) +#ifdef PNG_WRITE_INTERLACING_SUPPORTED color_type, interlace_type, compression_type, filter_type); #else color_type, PNG_INTERLACE_NONE, compression_type, filter_type); #endif } } -#if defined(PNG_READ_bKGD_SUPPORTED) && defined(PNG_WRITE_bKGD_SUPPORTED) +#ifdef PNG_FIXED_POINT_SUPPORTED +#ifdef PNG_cHRM_SUPPORTED { - png_color_16p background; - - if (png_get_bKGD(read_ptr, read_info_ptr, &background)) + 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)) { - png_set_bKGD(write_ptr, write_info_ptr, background); + 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 -#if defined(PNG_READ_cHRM_SUPPORTED) && defined(PNG_WRITE_cHRM_SUPPORTED) +#ifdef PNG_gAMA_SUPPORTED { - double white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y; + png_fixed_point gamma; + if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma)) + 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)) { @@ -607,48 +891,77 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) } } #endif -#if defined(PNG_READ_gAMA_SUPPORTED) && defined(PNG_WRITE_gAMA_SUPPORTED) +#ifdef PNG_gAMA_SUPPORTED { double gamma; if (png_get_gAMA(read_ptr, read_info_ptr, &gamma)) - { png_set_gAMA(write_ptr, write_info_ptr, gamma); + } +#endif +#endif /* Floating point */ +#endif /* Fixed point */ +#ifdef PNG_iCCP_SUPPORTED + { + png_charp name; + png_charp profile; + png_uint_32 proflen; + int compression_type; + + if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type, + &profile, &proflen)) + { + png_set_iCCP(write_ptr, write_info_ptr, name, compression_type, + profile, proflen); } } #endif -#if defined(PNG_READ_sRGB_SUPPORTED) && defined(PNG_WRITE_sRGB_SUPPORTED) +#ifdef PNG_sRGB_SUPPORTED { int intent; if (png_get_sRGB(read_ptr, read_info_ptr, &intent)) - { 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)) + 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)) + { + png_set_bKGD(write_ptr, write_info_ptr, background); } } #endif -#if defined(PNG_READ_hIST_SUPPORTED) && defined(PNG_WRITE_hIST_SUPPORTED) +#ifdef PNG_hIST_SUPPORTED { png_uint_16p hist; if (png_get_hIST(read_ptr, read_info_ptr, &hist)) - { png_set_hIST(write_ptr, write_info_ptr, hist); - } } #endif -#if defined(PNG_READ_oFFs_SUPPORTED) && defined(PNG_WRITE_oFFs_SUPPORTED) +#ifdef PNG_oFFs_SUPPORTED { - png_uint_32 offset_x, offset_y; + 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)) + if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y, + &unit_type)) { png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type); } } #endif -#if defined(PNG_READ_pCAL_SUPPORTED) && defined(PNG_WRITE_pCAL_SUPPORTED) +#ifdef PNG_pCAL_SUPPORTED { png_charp purpose, units; png_charpp params; @@ -663,128 +976,327 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) } } #endif -#if defined(PNG_READ_pHYs_SUPPORTED) && defined(PNG_WRITE_pHYs_SUPPORTED) +#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)) - { png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type); - } } #endif +#ifdef PNG_sBIT_SUPPORTED { - png_colorp palette; - int num_palette; + png_color_8p sig_bit; - if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette)) + if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit)) + png_set_sBIT(write_ptr, write_info_ptr, sig_bit); + } +#endif +#ifdef PNG_sCAL_SUPPORTED +#ifdef PNG_FLOATING_POINT_SUPPORTED + { + int unit; + double scal_width, scal_height; + + if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width, + &scal_height)) { - png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette); + png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height); } } -#if defined(PNG_READ_sBIT_SUPPORTED) && defined(PNG_WRITE_sBIT_SUPPORTED) +#else +#ifdef PNG_FIXED_POINT_SUPPORTED { - png_color_8p sig_bit; + int unit; + png_charp scal_width, scal_height; - if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit)) + if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width, + &scal_height)) { - png_set_sBIT(write_ptr, write_info_ptr, sig_bit); + png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width, + scal_height); } } #endif -#if (defined(PNG_READ_tEXt_SUPPORTED) && defined(PNG_WRITE_tEXt_SUPPORTED)) || \ - (defined(PNG_READ_zTXt_SUPPORTED) && defined(PNG_WRITE_zTXt_SUPPORTED)) +#endif +#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) { - png_debug1(0, "Handling %d tEXt/zTXt chunks\n", num_text); + png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text); png_set_text(write_ptr, write_info_ptr, text_ptr, num_text); } } #endif -#if defined(PNG_READ_tIME_SUPPORTED) && defined(PNG_WRITE_tIME_SUPPORTED) +#ifdef PNG_tIME_SUPPORTED { png_timep mod_time; if (png_get_tIME(read_ptr, read_info_ptr, &mod_time)) { png_set_tIME(write_ptr, write_info_ptr, mod_time); +#ifdef PNG_TIME_RFC1123_SUPPORTED + /* We have to use png_memcpy instead of "=" because the string + * pointed to by png_convert_to_rfc1123() gets free'ed before + * we use it. + */ + png_memcpy(tIME_string, + png_convert_to_rfc1123(read_ptr, mod_time), + png_sizeof(tIME_string)); + tIME_string[png_sizeof(tIME_string) - 1] = '\0'; + tIME_chunk_present++; +#endif /* PNG_TIME_RFC1123_SUPPORTED */ } } #endif -#if defined(PNG_READ_tRNS_SUPPORTED) && defined(PNG_WRITE_tRNS_SUPPORTED) +#ifdef PNG_tRNS_SUPPORTED { - png_bytep trans; + png_bytep trans_alpha; int num_trans; - png_color_16p trans_values; + png_color_16p trans_color; - if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans, - &trans_values)) + if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans, + &trans_color)) + { + 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 = (int)png_get_unknown_chunks(read_ptr, read_info_ptr, + &unknowns); + if (num_unknowns) { - png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans, - trans_values); + png_size_t i; + png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns, + num_unknowns); + /* Copy the locations from the read_info_ptr. The automatically + * generated locations in write_info_ptr are wrong because we + * haven't written anything yet. + */ + for (i = 0; i < (png_size_t)num_unknowns; i++) + png_set_unknown_chunk_location(write_ptr, write_info_ptr, i, + unknowns[i].location); } } #endif - png_debug(0, "\nWriting info struct\n"); +#ifdef PNG_WRITE_SUPPORTED + png_debug(0, "Writing info struct"); + +/* If we wanted, we could write info in two steps: + * png_write_info_before_PLTE(write_ptr, write_info_ptr); + */ png_write_info(write_ptr, write_info_ptr); - png_debug(0, "\nAllocating row buffer \n"); - row_buf = (png_bytep)png_malloc(read_ptr, - png_get_rowbytes(read_ptr, read_info_ptr)); - if (row_buf == NULL) +#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED + if (user_chunk_data[0] != 0) { - fprintf(STDERR, "No memory to allocate row buffer\n"); - png_destroy_read_struct(&read_ptr, &read_info_ptr, (png_infopp)NULL); - png_destroy_write_struct(&write_ptr, &write_info_ptr); - fclose(fpin); - fclose(fpout); - return (1); + png_byte png_sTER[5] = {115, 84, 69, 82, '\0'}; + + unsigned char + ster_chunk_data[1]; + + if (verbose) + fprintf(STDERR, "\n stereo mode = %lu\n", + (unsigned long)(user_chunk_data[0] - 1)); + ster_chunk_data[0]=(unsigned char)(user_chunk_data[0] - 1); + png_write_chunk(write_ptr, png_sTER, ster_chunk_data, 1); + } + if (user_chunk_data[1] != 0 || user_chunk_data[2] != 0) + { + png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'}; + + unsigned char + vpag_chunk_data[9]; + + if (verbose) + fprintf(STDERR, " vpAg = %lu x %lu, units = %lu\n", + (unsigned long)user_chunk_data[1], + (unsigned long)user_chunk_data[2], + (unsigned long)user_chunk_data[3]); + png_save_uint_32(vpag_chunk_data, user_chunk_data[1]); + png_save_uint_32(vpag_chunk_data + 4, user_chunk_data[2]); + vpag_chunk_data[8] = (unsigned char)(user_chunk_data[3] & 0xff); + png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9); } - png_debug(0, "Writing row data\n"); +#endif +#endif + +#ifdef SINGLE_ROWBUF_ALLOC + png_debug(0, "Allocating row buffer..."); + row_buf = (png_bytep)png_malloc(read_ptr, + png_get_rowbytes(read_ptr, read_info_ptr)); + png_debug1(0, "0x%08lx", (unsigned long)row_buf); +#endif /* SINGLE_ROWBUF_ALLOC */ + png_debug(0, "Writing row data"); + +#if defined(PNG_READ_INTERLACING_SUPPORTED) || \ + defined(PNG_WRITE_INTERLACING_SUPPORTED) num_pass = png_set_interlace_handling(read_ptr); +# ifdef PNG_WRITE_SUPPORTED png_set_interlace_handling(write_ptr); +# endif +#else + num_pass = 1; +#endif +#ifdef PNGTEST_TIMING + t_stop = (float)clock(); + t_misc += (t_stop - t_start); + t_start = t_stop; +#endif for (pass = 0; pass < num_pass; pass++) { - png_debug1(0, "Writing row data for pass %d\n",pass); + png_debug1(0, "Writing row data for pass %d", pass); for (y = 0; y < height; y++) { - png_read_rows(read_ptr, (png_bytepp)&row_buf, (png_bytepp)NULL, 1); +#ifndef SINGLE_ROWBUF_ALLOC + png_debug2(0, "Allocating row buffer (pass %d, y = %ld)...", pass, y); + row_buf = (png_bytep)png_malloc(read_ptr, + png_get_rowbytes(read_ptr, read_info_ptr)); + png_debug2(0, "0x%08lx (%ld bytes)", (unsigned long)row_buf, + png_get_rowbytes(read_ptr, read_info_ptr)); +#endif /* !SINGLE_ROWBUF_ALLOC */ + 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 /* PNG_WRITE_SUPPORTED */ + +#ifndef SINGLE_ROWBUF_ALLOC + png_debug2(0, "Freeing row buffer (pass %d, y = %ld)", pass, y); + png_free(read_ptr, row_buf); + row_buf = NULL; +#endif /* !SINGLE_ROWBUF_ALLOC */ } } - png_debug(0, "Reading and writing end_info data\n"); +#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 + + png_debug(0, "Reading and writing end_info data"); + png_read_end(read_ptr, end_info_ptr); - png_write_end(write_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) + { + png_debug1(0, "Handling %d iTXt/tEXt/zTXt chunks", num_text); + png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text); + } + } +#endif +#ifdef PNG_tIME_SUPPORTED + { + png_timep mod_time; + + if (png_get_tIME(read_ptr, end_info_ptr, &mod_time)) + { + png_set_tIME(write_ptr, write_end_info_ptr, mod_time); +#ifdef PNG_TIME_RFC1123_SUPPORTED + /* We have to use png_memcpy instead of "=" because the string + pointed to by png_convert_to_rfc1123() gets free'ed before + we use it */ + png_memcpy(tIME_string, + png_convert_to_rfc1123(read_ptr, mod_time), + png_sizeof(tIME_string)); + tIME_string[png_sizeof(tIME_string) - 1] = '\0'; + tIME_chunk_present++; +#endif /* PNG_TIME_RFC1123_SUPPORTED */ + } + } +#endif +#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED + { + png_unknown_chunkp unknowns; + int num_unknowns; + num_unknowns = (int)png_get_unknown_chunks(read_ptr, end_info_ptr, + &unknowns); + if (num_unknowns) + { + png_size_t i; + png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns, + num_unknowns); + /* Copy the locations from the read_info_ptr. The automatically + * generated locations in write_end_info_ptr are wrong because we + * haven't written the end_info yet. + */ + for (i = 0; i < (png_size_t)num_unknowns; i++) + png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i, + unknowns[i].location); + } + } +#endif +#ifdef PNG_WRITE_SUPPORTED + png_write_end(write_ptr, write_end_info_ptr); +#endif + #ifdef PNG_EASY_ACCESS_SUPPORTED - if(verbose) + if (verbose) { 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, "Image width = %lu, height = %lu\n", - iwidth, iheight); + fprintf(STDERR, "\n Image width = %lu, height = %lu\n", + (unsigned long)iwidth, (unsigned long)iheight); } #endif - png_debug(0, "Destroying data structs\n"); + png_debug(0, "Destroying data structs"); +#ifdef SINGLE_ROWBUF_ALLOC + png_debug(1, "destroying row_buf for read_ptr"); png_free(read_ptr, row_buf); + row_buf = NULL; +#endif /* SINGLE_ROWBUF_ALLOC */ + png_debug(1, "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 + png_debug(1, "destroying write_end_info_ptr"); + png_destroy_info_struct(write_ptr, &write_end_info_ptr); + png_debug(1, "destroying write_ptr, write_info_ptr"); png_destroy_write_struct(&write_ptr, &write_info_ptr); +#endif + png_debug(0, "Destruction complete."); - fclose(fpin); - fclose(fpout); + FCLOSE(fpin); + FCLOSE(fpout); - png_debug(0, "Opening files for comparison\n"); + png_debug(0, "Opening files for comparison"); if ((fpin = fopen(inname, "rb")) == NULL) { fprintf(STDERR, "Could not find file %s\n", inname); @@ -794,34 +1306,35 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) if ((fpout = fopen(outname, "rb")) == NULL) { fprintf(STDERR, "Could not find file %s\n", outname); - fclose(fpin); + FCLOSE(fpin); return (1); } - for(;;) + for (;;) { png_size_t num_in, num_out; - num_in = fread(inbuf, 1, 1, fpin); - num_out = fread(outbuf, 1, 1, fpout); + num_in = fread(inbuf, 1, 1, fpin); + num_out = fread(outbuf, 1, 1, fpout); if (num_in != num_out) { - fprintf(STDERR, "Files %s and %s are of a different size\n", + fprintf(STDERR, "\nFiles %s and %s are of a different size\n", inname, outname); - if(wrote_question == 0) + if (wrote_question == 0) { fprintf(STDERR, - " Was %s written with the same chunk size (8k),",inname); + " Was %s written with the same maximum IDAT chunk size (%d bytes),", + inname, PNG_ZBUF_SIZE); fprintf(STDERR, - " filtering\n heuristic (libpng default), compression"); + "\n filtering heuristic (libpng default), compression"); fprintf(STDERR, - " level (zlib default)\n and zlib version (%s)?\n\n", + " level (zlib default),\n and zlib version (%s)?\n\n", ZLIB_VERSION); - wrote_question=1; + wrote_question = 1; } - fclose(fpin); - fclose(fpout); + FCLOSE(fpin); + FCLOSE(fpout); return (0); } @@ -830,34 +1343,35 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname) if (png_memcmp(inbuf, outbuf, num_in)) { - fprintf(STDERR, "Files %s and %s are different\n", inname, outname); - if(wrote_question == 0) + fprintf(STDERR, "\nFiles %s and %s are different\n", inname, outname); + if (wrote_question == 0) { fprintf(STDERR, - " Was %s written with the same chunk size (8k),",inname); + " Was %s written with the same maximum IDAT chunk size (%d bytes),", + inname, PNG_ZBUF_SIZE); fprintf(STDERR, - " filtering\n heuristic (libpng default), compression"); + "\n filtering heuristic (libpng default), compression"); fprintf(STDERR, - " level (zlib default)\n and zlib version (%s)?\n\n", + " level (zlib default),\n and zlib version (%s)?\n\n", ZLIB_VERSION); - wrote_question=1; + wrote_question = 1; } - fclose(fpin); - fclose(fpout); + FCLOSE(fpin); + FCLOSE(fpout); return (0); } } - fclose(fpin); - fclose(fpout); + FCLOSE(fpin); + FCLOSE(fpout); return (0); } -/* input and output filenames */ +/* Input and output filenames */ #ifdef RISCOS -PNG_CONST char *inname = "pngtest/png"; -PNG_CONST char *outname = "pngout/png"; +static PNG_CONST char *inname = "pngtest/png"; +static PNG_CONST char *outname = "pngout/png"; #else static PNG_CONST char *inname = "pngtest.png"; static PNG_CONST char *outname = "pngout.png"; @@ -869,13 +1383,24 @@ main(int argc, char *argv[]) int multiple = 0; int ierror = 0; - fprintf(STDERR, "Testing libpng version %s\n", PNG_LIBPNG_VER_STRING); + 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); + fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n", + (long)png_sizeof(png_struct), (long)png_sizeof(png_info)); /* 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 */ + * 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 @@ -920,10 +1445,10 @@ main(int argc, char *argv[]) } } - if (!multiple && argc == 3+verbose) - outname = argv[2+verbose]; + if (!multiple && argc == 3 + verbose) + outname = argv[2 + verbose]; - if ((!multiple && argc > 3+verbose) || (multiple && argc < 2)) + if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2)) { fprintf(STDERR, "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n", @@ -938,99 +1463,170 @@ main(int argc, char *argv[]) if (multiple) { int i; -#ifdef PNGTEST_MEMORY_DEBUG +#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG int allocation_now = current_allocation; #endif for (i=2; isize, pinfo->pointer); + while (pinfo != NULL) + { + fprintf(STDERR, " %lu bytes at %x\n", + (unsigned long)pinfo->size, + (unsigned int) pinfo->pointer); pinfo = pinfo->next; - } + } } #endif } -#ifdef PNGTEST_MEMORY_DEBUG - fprintf(STDERR, "Maximum memory allocation: %d bytes\n", +#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) { + for (i = 0; i<3; ++i) + { int kerror; -#ifdef PNGTEST_MEMORY_DEBUG +#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; + else if (verbose == 0)status_dots_requested = 0; if (i == 0 || verbose == 1 || ierror != 0) - fprintf(STDERR, "Testing %s:",inname); + fprintf(STDERR, "\n Testing %s:", inname); kerror = test_one_file(inname, outname); - if(kerror == 0) + if (kerror == 0) { - if(verbose == 1 || i == 2) -#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) - fprintf(STDERR, " PASS (%lu black pixels)\n",black_pixels); + if (verbose == 1 || i == 2) + { +#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED + int k; +#endif +#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_READ_USER_TRANSFORM_SUPPORTED + for (k = 0; k<256; k++) + if (filters_used[k]) + fprintf(STDERR, " Filter %d was used %lu times\n", + k, (unsigned long)filters_used[k]); +#endif +#ifdef PNG_TIME_RFC1123_SUPPORTED + if (tIME_chunk_present != 0) + fprintf(STDERR, " tIME = %s\n", tIME_string); +#endif /* PNG_TIME_RFC1123_SUPPORTED */ + } } else { - if(verbose == 0 && i != 2) - fprintf(STDERR, "Testing %s:",inname); + if (verbose == 0 && i != 2) + fprintf(STDERR, "\n Testing %s:", inname); fprintf(STDERR, " FAIL\n"); ierror += kerror; } -#ifdef PNGTEST_MEMORY_DEBUG +#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) { + 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, " %d bytes at %x\n", pinfo->size, pinfo->pointer); + while (pinfo != NULL) + { + fprintf(STDERR, " %lu bytes at %x\n", + (unsigned long)pinfo->size, (unsigned int)pinfo->pointer); pinfo = pinfo->next; } } #endif } -#ifdef PNGTEST_MEMORY_DEBUG - fprintf(STDERR, "Maximum memory allocation: %d bytes\n", +#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"); + fprintf(STDERR, " libpng passes test\n"); else - fprintf(STDERR, "libpng FAILS test\n"); + fprintf(STDERR, " libpng FAILS test\n"); return (int)(ierror != 0); } + +/* Generate a compiler error if there is an old png.h in the search path. */ +typedef version_1_4_4 your_png_h_is_not_version_1_4_4;