--- a/jdk/src/java.desktop/share/native/libsplashscreen/libpng/pngtest.c Fri Jan 27 20:33:34 2017 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,2110 +0,0 @@
-/*
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/* pngtest.c - a simple test program to test libpng
- *
- * This file is available under and governed by the GNU General Public
- * License version 2 only, as published by the Free Software Foundation.
- * However, the following notice accompanied the original version of this
- * file and, per its terms, should not be removed:
- *
- * Last changed in libpng 1.5.25 [December 3, 2015]
- * Copyright (c) 1998-2002,2004,2006-2015 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
- * 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>
-
-/* Defined so I can write to a file on gui/windowing platforms */
-/* #define STDERR stderr */
-#define STDERR stdout /* For DOS */
-
-#include "png.h"
-
-/* 1.6.1 added support for the configure test harness, which uses 77 to indicate
- * a skipped test, in earlier versions we need to succeed on a skipped test, so:
- */
-#if PNG_LIBPNG_VER >= 10601 && 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 1.7
- *
- * 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)
-
-#ifdef PNG_ZLIB_HEADER
-# include PNG_ZLIB_HEADER /* defined by pnglibconf.h from 1.7 */
-#else
-# include "zlib.h"
-#endif
-
-/* Copied from pngpriv.h but only used in error messages below. */
-#ifndef PNG_ZBUF_SIZE
-# define PNG_ZBUF_SIZE 8192
-#endif
-#define FCLOSE(file) fclose(file)
-
-#ifndef PNG_STDIO_SUPPORTED
-typedef FILE * png_FILE_p;
-#endif
-
-/* Makes pngtest verbose so we can find problems. */
-#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))
-#else
-# define pngtest_debug(m) ((void)0)
-# define pngtest_debug1(m,p1) ((void)0)
-# define pngtest_debug2(m,p1,p2) ((void)0)
-#endif
-
-#if !PNG_DEBUG
-# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
-#endif
-
-#ifndef PNG_UNUSED
-# define PNG_UNUSED(param) (void)param;
-#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
-#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";
-
-#if PNG_LIBPNG_VER < 10619
-#define png_convert_to_rfc1123_buffer(ts, t) tIME_to_str(read_ptr, ts, t)
-
-static int
-tIME_to_str(png_structp png_ptr, png_charp ts, png_const_timep t)
-{
- png_const_charp str = png_convert_to_rfc1123(png_ptr, t);
-
- if (str == NULL)
- return 0;
-
- strcpy(ts, str);
- return 1;
-}
-#endif /* older libpng */
-#endif
-
-static int verbose = 0;
-static int strict = 0;
-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 */
-
-/* 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;
-
-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)
- 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");
-}
-
-#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)
- return;
-
- 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)
-{
- PNG_UNUSED(png_ptr)
- PNG_UNUSED(row_info)
- PNG_UNUSED(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;
- if (png_ptr == NULL)
- return;
-
- /* 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, png_size_t data_length,
- png_uint_32 io_op);
-void
-pngtest_check_io_state(png_structp png_ptr, png_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)
- {
- 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, png_size_t length)
-{
- 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.
- */
- 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)
-{
- /* Do nothing; fflush() is said to be just a waste of energy. */
- PNG_UNUSED(png_ptr) /* Stifle compiler warning */
-}
-#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, png_size_t length)
-{
- png_size_t check;
-
- 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
-{
- 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!)";
- 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, "%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). */
-
-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) != 0 || (data->location[1] & what) != 0)
- return 0; /* 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 (data->info_ptr == NULL) /* after IDAT */
- location = what | after_IDAT;
-
- else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE) != 0)
- location = what | before_IDAT;
-
- else
- location = what | before_PLTE;
-
- if (data->location[0] == 0)
- data->location[0] = location;
-
- else
- data->location[1] = location;
-
- return 1; /* handled */
-}
-
-static int PNGCBAPI
-read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk)
-{
- 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
- * 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 */
-
- if (set_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_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)
-{
- png_byte sTER[5] = {115, 84, 69, 82, '\0'};
-
- if (verbose != 0)
- fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode);
-
- png_write_chunk(write_ptr, sTER, &user_chunk_data.sTER_mode, 1);
-}
-
-static void
-write_vpAg_chunk(png_structp write_ptr)
-{
- 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)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, 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 /* 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(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
- 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;
- volatile int num_passes;
- int pass;
- int bit_depth, color_type;
-
- 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_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");
- 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;
- 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);
-#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_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);
-#endif
- FCLOSE(fpin);
- FCLOSE(fpout);
- return (1);
- }
-#endif
-#endif
-
- 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);
-
-#ifdef PNG_WRITE_SUPPORTED
- png_set_benign_errors(write_ptr, 1);
-#endif
- }
-
- 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 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
- 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;
-
- 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_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 = (int) png_get_sPLT(read_ptr, read_info_ptr, &entries);
- if (num_entries)
- {
- 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;
-
- printf("\n");
- for (i=0; i<num_text; i++)
- {
- printf(" 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);
-#if PNG_LIBPNG_VER < 10600
- /* Copy the locations from the read_info_ptr. The automatically
- * generated locations in write_end_info_ptr are wrong prior to 1.6.0
- * because they are reset from the write pointer (removed in 1.6.0).
- */
- {
- int i;
- for (i = 0; i < num_unknowns; i++)
- png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
- unknowns[i].location);
- }
-#endif
- }
- }
-#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, before_PLTE); /* before PLTE */
-
- png_write_info(write_ptr, write_info_ptr);
-
- write_chunks(write_ptr, before_IDAT); /* after PLTE */
-#endif
-
-#ifdef SINGLE_ROWBUF_ALLOC
- pngtest_debug("Allocating row buffer...");
- row_buf = (png_bytep)png_malloc(read_ptr,
- png_get_rowbytes(read_ptr, read_info_ptr));
-
- pngtest_debug1("\t0x%08lx", (unsigned long)row_buf);
-#endif /* SINGLE_ROWBUF_ALLOC */
- 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++)
- {
-#ifndef SINGLE_ROWBUF_ALLOC
- 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("\t0x%08lx (%lu bytes)", (unsigned long)row_buf,
- (unsigned long)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 /* WRITE */
-
-#ifndef SINGLE_ROWBUF_ALLOC
- pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);
- png_free(read_ptr, row_buf);
- row_buf = NULL;
-#endif /* !SINGLE_ROWBUF_ALLOC */
- }
- }
-
-#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;
-
- printf("\n");
- for (i=0; i<num_text; i++)
- {
- printf(" 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_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);
-#if PNG_LIBPNG_VER < 10600
- /* Copy the locations from the read_info_ptr. The automatically
- * generated locations in write_end_info_ptr are wrong prior to 1.6.0
- * because they are reset from the write pointer (removed in 1.6.0).
- */
- {
- int i;
- for (i = 0; i < num_unknowns; i++)
- png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
- unknowns[i].location);
- }
-#endif
- }
- }
-#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, 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");
-#ifdef SINGLE_ROWBUF_ALLOC
- pngtest_debug("destroying row_buf for read_ptr");
- png_free(read_ptr, row_buf);
- row_buf = NULL;
-#endif /* SINGLE_ROWBUF_ALLOC */
- 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;
- 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 (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 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";
-#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))
- {
- fprintf(STDERR,
- "Warning: versions are different between png.h and png.c\n");
- fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
- fprintf(STDERR, " png.c version: %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;
- }
-
- else if (strcmp(argv[1], "--relaxed") == 0)
- {
- status_dots_requested = 0;
- verbose = 1;
- inname = argv[2];
- strict = 0;
- relaxed++;
- }
-
- 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
- {
- 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
- }
-
- 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 (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 SKIP;
-}
-#endif
-
-/* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_23 Your_png_h_is_not_version_1_6_23;