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![Amine Khaldi](/assets/img/avatar_default.png)
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
1952 lines
55 KiB
C
1952 lines
55 KiB
C
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/* pngtest.c - a simple test program to test libpng
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*
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* Last changed in libpng 1.5.14 [January 24, 2013]
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* Copyright (c) 1998-2013 Glenn Randers-Pehrson
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* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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*
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* This code is released under the libpng license.
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* For conditions of distribution and use, see the disclaimer
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* and license in png.h
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*
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* This program reads in a PNG image, writes it out again, and then
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* compares the two files. If the files are identical, this shows that
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* the basic chunk handling, filtering, and (de)compression code is working
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* properly. It does not currently test all of the transforms, although
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* it probably should.
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*
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* The program will report "FAIL" in certain legitimate cases:
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* 1) when the compression level or filter selection method is changed.
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* 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
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* 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
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* exist in the input file.
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* 4) others not listed here...
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* In these cases, it is best to check with another tool such as "pngcheck"
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* to see what the differences between the two files are.
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*
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* If a filename is given on the command-line, then this file is used
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* for the input, rather than the default "pngtest.png". This allows
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* testing a wide variety of files easily. You can also test a number
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* of files at once by typing "pngtest -m file1.png file2.png ..."
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*/
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#define _POSIX_SOURCE 1
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/* Defined so I can write to a file on gui/windowing platforms */
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/* #define STDERR stderr */
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#define STDERR stdout /* For DOS */
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#include "png.h"
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#ifdef PNG_READ_SUPPORTED /* else nothing can be done */
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#include "zlib.h"
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/* Copied from pngpriv.h but only used in error messages below. */
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#ifndef PNG_ZBUF_SIZE
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# define PNG_ZBUF_SIZE 8192
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#endif
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#define FCLOSE(file) fclose(file)
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#ifndef PNG_STDIO_SUPPORTED
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typedef FILE * png_FILE_p;
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#endif
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/* Makes pngtest verbose so we can find problems. */
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#ifndef PNG_DEBUG
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# define PNG_DEBUG 0
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#endif
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#if PNG_DEBUG > 1
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# define pngtest_debug(m) ((void)fprintf(stderr, m "\n"))
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# define pngtest_debug1(m,p1) ((void)fprintf(stderr, m "\n", p1))
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# define pngtest_debug2(m,p1,p2) ((void)fprintf(stderr, m "\n", p1, p2))
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#else
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# define pngtest_debug(m) ((void)0)
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# define pngtest_debug1(m,p1) ((void)0)
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# define pngtest_debug2(m,p1,p2) ((void)0)
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#endif
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#if !PNG_DEBUG
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# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
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#endif
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/* Turn on CPU timing
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#define PNGTEST_TIMING
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*/
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#ifndef PNG_FLOATING_POINT_SUPPORTED
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#undef PNGTEST_TIMING
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#endif
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#ifdef PNGTEST_TIMING
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static float t_start, t_stop, t_decode, t_encode, t_misc;
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#include <time.h>
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#endif
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#ifdef PNG_TIME_RFC1123_SUPPORTED
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#define PNG_tIME_STRING_LENGTH 29
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static int tIME_chunk_present = 0;
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static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
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#endif
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static int verbose = 0;
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static int strict = 0;
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static int relaxed = 0;
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static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */
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static int error_count = 0; /* count calls to png_error */
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static int warning_count = 0; /* count calls to png_warning */
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#ifdef __TURBOC__
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#include <mem.h>
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#endif
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/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
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#ifndef png_jmpbuf
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# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
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#endif
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/* Defines for unknown chunk handling if required. */
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#ifndef PNG_HANDLE_CHUNK_ALWAYS
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# define PNG_HANDLE_CHUNK_ALWAYS 3
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#endif
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#ifndef PNG_HANDLE_CHUNK_IF_SAFE
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# define PNG_HANDLE_CHUNK_IF_SAFE 2
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#endif
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/* Utility to save typing/errors, the argument must be a name */
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#define MEMZERO(var) ((void)memset(&var, 0, sizeof var))
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/* Example of using row callbacks to make a simple progress meter */
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static int status_pass = 1;
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static int status_dots_requested = 0;
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static int status_dots = 1;
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static void PNGCBAPI
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read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
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{
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if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
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return;
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if (status_pass != pass)
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{
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fprintf(stdout, "\n Pass %d: ", pass);
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status_pass = pass;
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status_dots = 31;
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}
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status_dots--;
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if (status_dots == 0)
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{
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fprintf(stdout, "\n ");
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status_dots=30;
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}
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fprintf(stdout, "r");
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}
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#ifdef PNG_WRITE_SUPPORTED
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static void PNGCBAPI
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write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
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{
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if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
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return;
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fprintf(stdout, "w");
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}
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#endif
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#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
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/* Example of using user transform callback (we don't transform anything,
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* but merely examine the row filters. We set this to 256 rather than
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* 5 in case illegal filter values are present.)
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*/
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static png_uint_32 filters_used[256];
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static void PNGCBAPI
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count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
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{
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if (png_ptr != NULL && row_info != NULL)
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++filters_used[*(data - 1)];
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}
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#endif
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#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
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/* Example of using user transform callback (we don't transform anything,
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* but merely count the zero samples)
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*/
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static png_uint_32 zero_samples;
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static void PNGCBAPI
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count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
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{
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png_bytep dp = data;
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if (png_ptr == NULL)
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return;
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/* Contents of row_info:
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* png_uint_32 width width of row
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* png_uint_32 rowbytes number of bytes in row
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* png_byte color_type color type of pixels
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* png_byte bit_depth bit depth of samples
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* png_byte channels number of channels (1-4)
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* png_byte pixel_depth bits per pixel (depth*channels)
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*/
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/* Counts the number of zero samples (or zero pixels if color_type is 3 */
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if (row_info->color_type == 0 || row_info->color_type == 3)
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{
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int pos = 0;
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png_uint_32 n, nstop;
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for (n = 0, nstop=row_info->width; n<nstop; n++)
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{
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if (row_info->bit_depth == 1)
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{
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if (((*dp << pos++ ) & 0x80) == 0)
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zero_samples++;
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if (pos == 8)
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{
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pos = 0;
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dp++;
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}
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}
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if (row_info->bit_depth == 2)
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{
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if (((*dp << (pos+=2)) & 0xc0) == 0)
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zero_samples++;
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if (pos == 8)
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{
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pos = 0;
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dp++;
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}
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}
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if (row_info->bit_depth == 4)
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{
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if (((*dp << (pos+=4)) & 0xf0) == 0)
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zero_samples++;
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if (pos == 8)
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{
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pos = 0;
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dp++;
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}
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}
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if (row_info->bit_depth == 8)
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if (*dp++ == 0)
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zero_samples++;
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if (row_info->bit_depth == 16)
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{
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if ((*dp | *(dp+1)) == 0)
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zero_samples++;
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dp+=2;
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}
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}
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}
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else /* Other color types */
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{
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png_uint_32 n, nstop;
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int channel;
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int color_channels = row_info->channels;
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if (row_info->color_type > 3)color_channels--;
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for (n = 0, nstop=row_info->width; n<nstop; n++)
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{
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for (channel = 0; channel < color_channels; channel++)
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{
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if (row_info->bit_depth == 8)
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if (*dp++ == 0)
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zero_samples++;
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if (row_info->bit_depth == 16)
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{
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if ((*dp | *(dp+1)) == 0)
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zero_samples++;
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dp+=2;
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}
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}
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if (row_info->color_type > 3)
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{
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dp++;
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if (row_info->bit_depth == 16)
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dp++;
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}
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}
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}
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}
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#endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
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#ifndef PNG_STDIO_SUPPORTED
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/* START of code to validate stdio-free compilation */
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/* These copies of the default read/write functions come from pngrio.c and
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* pngwio.c. They allow "don't include stdio" testing of the library.
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* This is the function that does the actual reading of data. If you are
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* not reading from a standard C stream, you should create a replacement
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* read_data function and use it at run time with png_set_read_fn(), rather
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* than changing the library.
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*/
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#ifdef PNG_IO_STATE_SUPPORTED
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void
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pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
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png_uint_32 io_op);
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void
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pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
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png_uint_32 io_op)
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{
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png_uint_32 io_state = png_get_io_state(png_ptr);
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int err = 0;
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/* Check if the current operation (reading / writing) is as expected. */
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if ((io_state & PNG_IO_MASK_OP) != io_op)
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png_error(png_ptr, "Incorrect operation in I/O state");
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/* Check if the buffer size specific to the current location
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* (file signature / header / data / crc) is as expected.
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*/
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switch (io_state & PNG_IO_MASK_LOC)
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{
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case PNG_IO_SIGNATURE:
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if (data_length > 8)
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err = 1;
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break;
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case PNG_IO_CHUNK_HDR:
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if (data_length != 8)
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err = 1;
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break;
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case PNG_IO_CHUNK_DATA:
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break; /* no restrictions here */
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case PNG_IO_CHUNK_CRC:
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if (data_length != 4)
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err = 1;
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break;
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default:
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err = 1; /* uninitialized */
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}
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if (err)
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png_error(png_ptr, "Bad I/O state or buffer size");
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}
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#endif
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static void PNGCBAPI
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pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
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{
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png_size_t check = 0;
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png_voidp io_ptr;
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/* fread() returns 0 on error, so it is OK to store this in a png_size_t
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* instead of an int, which is what fread() actually returns.
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*/
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io_ptr = png_get_io_ptr(png_ptr);
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if (io_ptr != NULL)
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{
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check = fread(data, 1, length, (png_FILE_p)io_ptr);
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}
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if (check != length)
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{
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png_error(png_ptr, "Read Error");
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}
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#ifdef PNG_IO_STATE_SUPPORTED
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pngtest_check_io_state(png_ptr, length, PNG_IO_READING);
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#endif
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}
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#ifdef PNG_WRITE_FLUSH_SUPPORTED
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static void PNGCBAPI
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pngtest_flush(png_structp png_ptr)
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{
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/* Do nothing; fflush() is said to be just a waste of energy. */
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PNG_UNUSED(png_ptr) /* Stifle compiler warning */
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}
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#endif
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/* This is the function that does the actual writing of data. If you are
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* not writing to a standard C stream, you should create a replacement
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* write_data function and use it at run time with png_set_write_fn(), rather
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* than changing the library.
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*/
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static void PNGCBAPI
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pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
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{
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png_size_t check;
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check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));
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if (check != length)
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{
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png_error(png_ptr, "Write Error");
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}
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#ifdef PNG_IO_STATE_SUPPORTED
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pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING);
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#endif
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}
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#endif /* !PNG_STDIO_SUPPORTED */
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/* This function is called when there is a warning, but the library thinks
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* it can continue anyway. Replacement functions don't have to do anything
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* here if you don't want to. In the default configuration, png_ptr is
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* not used, but it is passed in case it may be useful.
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*/
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typedef struct
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{
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PNG_CONST char *file_name;
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} pngtest_error_parameters;
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static void PNGCBAPI
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pngtest_warning(png_structp png_ptr, png_const_charp message)
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{
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PNG_CONST char *name = "UNKNOWN (ERROR!)";
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pngtest_error_parameters *test =
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(pngtest_error_parameters*)png_get_error_ptr(png_ptr);
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++warning_count;
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if (test != NULL && test->file_name != NULL)
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name = test->file_name;
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fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
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}
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/* This is the default error handling function. Note that replacements for
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* this function MUST NOT RETURN, or the program will likely crash. This
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* function is used by default, or if the program supplies NULL for the
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* error function pointer in png_set_error_fn().
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*/
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static void PNGCBAPI
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pngtest_error(png_structp png_ptr, png_const_charp message)
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{
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++error_count;
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pngtest_warning(png_ptr, message);
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/* We can return because png_error calls the default handler, which is
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* actually OK in this case.
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*/
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}
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/* END of code to validate stdio-free compilation */
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/* START of code to validate memory allocation and deallocation */
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#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
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/* Allocate memory. For reasonable files, size should never exceed
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* 64K. However, zlib may allocate more then 64K if you don't tell
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* it not to. See zconf.h and png.h for more information. zlib does
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* need to allocate exactly 64K, so whatever you call here must
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* have the ability to do that.
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*
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* This piece of code can be compiled to validate max 64K allocations
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* by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
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*/
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typedef struct memory_information
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{
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png_alloc_size_t size;
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png_voidp pointer;
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struct memory_information *next;
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} memory_information;
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typedef memory_information *memory_infop;
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static memory_infop pinformation = NULL;
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static int current_allocation = 0;
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static int maximum_allocation = 0;
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static int total_allocation = 0;
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static int num_allocations = 0;
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png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr,
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png_alloc_size_t size));
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void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
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png_voidp
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PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
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{
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/* png_malloc has already tested for NULL; png_create_struct calls
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* png_debug_malloc directly, with png_ptr == NULL which is OK
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*/
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if (size == 0)
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return (NULL);
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/* This calls the library allocator twice, once to get the requested
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buffer and once to get a new free list entry. */
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{
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/* Disable malloc_fn and free_fn */
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memory_infop pinfo;
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png_set_mem_fn(png_ptr, NULL, NULL, NULL);
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pinfo = (memory_infop)png_malloc(png_ptr,
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(sizeof *pinfo));
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pinfo->size = size;
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current_allocation += size;
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total_allocation += size;
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num_allocations ++;
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if (current_allocation > maximum_allocation)
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maximum_allocation = current_allocation;
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pinfo->pointer = png_malloc(png_ptr, size);
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/* Restore malloc_fn and free_fn */
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png_set_mem_fn(png_ptr,
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NULL, png_debug_malloc, png_debug_free);
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if (size != 0 && pinfo->pointer == NULL)
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{
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current_allocation -= size;
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total_allocation -= size;
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png_error(png_ptr,
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"out of memory in pngtest->png_debug_malloc");
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}
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pinfo->next = pinformation;
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pinformation = pinfo;
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/* Make sure the caller isn't assuming zeroed memory. */
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memset(pinfo->pointer, 0xdd, pinfo->size);
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if (verbose)
|
|
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. */
|
|
{
|
|
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);
|
|
png_free_default(png_ptr, pinfo);
|
|
pinfo = NULL;
|
|
break;
|
|
}
|
|
|
|
if (pinfo->next == NULL)
|
|
{
|
|
fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
|
|
break;
|
|
}
|
|
|
|
ppinfo = &pinfo->next;
|
|
}
|
|
}
|
|
|
|
/* Finally free the data. */
|
|
if (verbose)
|
|
printf("Freeing %p\n", ptr);
|
|
|
|
png_free_default(png_ptr, ptr);
|
|
ptr = NULL;
|
|
}
|
|
#endif /* PNG_USER_MEM_SUPPORTED && PNG_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) || (data->location[1] & what))
|
|
return 0; /* already have one of these */
|
|
|
|
/* Find where we are (the code below zeros info_ptr to indicate that the
|
|
* chunks before the first IDAT have been read.)
|
|
*/
|
|
if (data->info_ptr == NULL) /* after IDAT */
|
|
location = what | after_IDAT;
|
|
|
|
else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE))
|
|
location = what | before_IDAT;
|
|
|
|
else
|
|
location = what | before_PLTE;
|
|
|
|
if (data->location[0] == 0)
|
|
data->location[0] = location;
|
|
|
|
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))
|
|
{
|
|
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))
|
|
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 png_sTER[5] = {115, 84, 69, 82, '\0'};
|
|
|
|
if (verbose)
|
|
fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode);
|
|
|
|
png_write_chunk(write_ptr, png_sTER, &user_chunk_data.sTER_mode, 1);
|
|
}
|
|
|
|
static void
|
|
write_vpAg_chunk(png_structp write_ptr)
|
|
{
|
|
png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
|
|
|
|
png_byte vpag_chunk_data[9];
|
|
|
|
if (verbose)
|
|
fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n",
|
|
(unsigned long)user_chunk_data.vpAg_width,
|
|
(unsigned long)user_chunk_data.vpAg_height,
|
|
user_chunk_data.vpAg_units);
|
|
|
|
png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width);
|
|
png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height);
|
|
vpag_chunk_data[8] = user_chunk_data.vpAg_units;
|
|
png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
|
|
}
|
|
|
|
static void
|
|
write_chunks(png_structp write_ptr, int location)
|
|
{
|
|
int i;
|
|
|
|
/* Notice that this preserves the original chunk order, however chunks
|
|
* intercepted by the callback will be written *after* chunks passed to
|
|
* libpng. This will actually reverse a pair of sTER chunks or a pair of
|
|
* vpAg chunks, resulting in an error later. This is not worth worrying
|
|
* about - the chunks should not be duplicated!
|
|
*/
|
|
for (i=0; i<2; ++i)
|
|
{
|
|
if (user_chunk_data.location[i] == (location | have_sTER))
|
|
write_sTER_chunk(write_ptr);
|
|
|
|
else if (user_chunk_data.location[i] == (location | have_vpAg))
|
|
write_vpAg_chunk(write_ptr);
|
|
}
|
|
}
|
|
#endif /* PNG_WRITE_SUPPORTED */
|
|
#else /* !PNG_READ_USER_CHUNKS_SUPPORTED */
|
|
# define write_chunks(pp,loc) ((void)0)
|
|
#endif
|
|
/* END of code to demonstrate user chunk support */
|
|
|
|
/* START of code to check that libpng has the required text support; this only
|
|
* checks for the write support because if read support is missing the chunk
|
|
* will simply not be reported back to pngtest.
|
|
*/
|
|
#ifdef PNG_TEXT_SUPPORTED
|
|
static void
|
|
pngtest_check_text_support(png_structp png_ptr, png_textp text_ptr,
|
|
int num_text)
|
|
{
|
|
while (num_text > 0)
|
|
{
|
|
switch (text_ptr[--num_text].compression)
|
|
{
|
|
case PNG_TEXT_COMPRESSION_NONE:
|
|
break;
|
|
|
|
case PNG_TEXT_COMPRESSION_zTXt:
|
|
# ifndef PNG_WRITE_zTXt_SUPPORTED
|
|
++unsupported_chunks;
|
|
# endif
|
|
break;
|
|
|
|
case PNG_ITXT_COMPRESSION_NONE:
|
|
case PNG_ITXT_COMPRESSION_zTXt:
|
|
# ifndef PNG_WRITE_iTXt_SUPPORTED
|
|
++unsupported_chunks;
|
|
# endif
|
|
break;
|
|
|
|
default:
|
|
/* This is an error */
|
|
png_error(png_ptr, "invalid text chunk compression field");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
/* END of code to check that libpng has the required text support */
|
|
|
|
/* Test one file */
|
|
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;
|
|
#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;
|
|
|
|
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)
|
|
{
|
|
/* Treat png_benign_error() as errors on read */
|
|
png_set_benign_errors(read_ptr, 0);
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
/* Treat them as errors on write */
|
|
png_set_benign_errors(write_ptr, 0);
|
|
#endif
|
|
|
|
/* if strict is not set, then app warnings and errors are treated as
|
|
* warnings in release builds, but not in unstable builds; this can be
|
|
* changed with '--relaxed'.
|
|
*/
|
|
}
|
|
|
|
else if (relaxed)
|
|
{
|
|
/* Allow application (pngtest) errors and warnings to pass */
|
|
png_set_benign_errors(read_ptr, 1);
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED
|
|
png_set_benign_errors(write_ptr, 1);
|
|
#endif
|
|
}
|
|
|
|
pngtest_debug("Initializing input and output streams");
|
|
#ifdef PNG_STDIO_SUPPORTED
|
|
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
|
|
{
|
|
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_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))
|
|
{
|
|
png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
|
|
#ifdef PNG_WRITE_INTERLACING_SUPPORTED
|
|
color_type, interlace_type, compression_type, filter_type);
|
|
#else
|
|
color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
|
|
#endif
|
|
}
|
|
}
|
|
#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))
|
|
{
|
|
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))
|
|
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))
|
|
{
|
|
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))
|
|
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))
|
|
{
|
|
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))
|
|
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
|
|
#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
|
|
#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))
|
|
{
|
|
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))
|
|
{
|
|
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))
|
|
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))
|
|
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_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))
|
|
{
|
|
png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
|
|
scal_height);
|
|
}
|
|
}
|
|
#endif
|
|
#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)
|
|
{
|
|
pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
|
|
|
|
pngtest_check_text_support(read_ptr, text_ptr, num_text);
|
|
|
|
if (verbose)
|
|
{
|
|
int i;
|
|
|
|
printf("\n");
|
|
for (i=0; i<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))
|
|
{
|
|
png_set_tIME(write_ptr, write_info_ptr, mod_time);
|
|
#ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
/* We have to use memcpy instead of "=" because the string
|
|
* pointed to by png_convert_to_rfc1123() gets free'ed before
|
|
* we use it.
|
|
*/
|
|
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_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))
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
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++)
|
|
{
|
|
pngtest_debug1("Writing row data for pass %d", pass);
|
|
for (y = 0; y < 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 (%u 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
|
|
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_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
|
|
|
|
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)
|
|
{
|
|
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))
|
|
{
|
|
png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
|
|
#ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
/* We have to use memcpy instead of "=" because the string
|
|
pointed to by png_convert_to_rfc1123() gets free'ed before
|
|
we use it */
|
|
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 = png_get_unknown_chunks(read_ptr, end_info_ptr,
|
|
&unknowns);
|
|
|
|
if (num_unknowns)
|
|
{
|
|
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)
|
|
{
|
|
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 we no write support nothing was written! */
|
|
else if (unsupported_chunks > 0)
|
|
{
|
|
fprintf(STDERR, "\n %s: unsupported chunks (%d)%s",
|
|
inname, unsupported_chunks, strict ? ": IGNORED --strict!" : "");
|
|
}
|
|
# endif
|
|
|
|
else if (warning_count > 0)
|
|
{
|
|
fprintf(STDERR, "\n %s: %d libpng warnings found",
|
|
inname, warning_count);
|
|
|
|
if (strict != 0)
|
|
return (1);
|
|
}
|
|
|
|
pngtest_debug("Opening files for comparison");
|
|
if ((fpin = fopen(inname, "rb")) == NULL)
|
|
{
|
|
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);
|
|
}
|
|
|
|
#ifdef PNG_WRITE_SUPPORTED /* else nothing was written */
|
|
{
|
|
int wrote_question = 0;
|
|
|
|
for (;;)
|
|
{
|
|
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)
|
|
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 /* PNG_WRITE_SUPPORTED */
|
|
|
|
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;
|
|
|
|
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 && argc == 3 + verbose)
|
|
outname = argv[2 + verbose];
|
|
|
|
if ((!multiple && argc > 3 + verbose) || (multiple && 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)
|
|
{
|
|
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]);
|
|
kerror = test_one_file(argv[i], outname);
|
|
if (kerror == 0)
|
|
{
|
|
#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);
|
|
|
|
tIME_chunk_present = 0;
|
|
#endif /* PNG_TIME_RFC1123_SUPPORTED */
|
|
}
|
|
|
|
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 %x\n",
|
|
(unsigned long)pinfo->size,
|
|
(unsigned int)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);
|
|
|
|
kerror = test_one_file(inname, outname);
|
|
|
|
if (kerror == 0)
|
|
{
|
|
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, "\n Testing %s:", inname);
|
|
|
|
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 %x\n",
|
|
(unsigned long)pinfo->size, (unsigned int)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");
|
|
|
|
return (int)(ierror != 0);
|
|
}
|
|
#else
|
|
int
|
|
main(void)
|
|
{
|
|
fprintf(STDERR,
|
|
" test ignored because libpng was not built with read support\n");
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/* Generate a compiler error if there is an old png.h in the search path. */
|
|
typedef png_libpng_version_1_5_14 Your_png_h_is_not_version_1_5_14;
|