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2296
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1
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2 /* pngtest.c - a simple test program to test libpng
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3 *
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4 * Last changed in libpng 1.6.9 [February 6, 2014]
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5 * Copyright (c) 1998-2014 Glenn Randers-Pehrson
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6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
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7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
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8 *
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9 * This code is released under the libpng license.
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10 * For conditions of distribution and use, see the disclaimer
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11 * and license in png.h
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12 *
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13 * This program reads in a PNG image, writes it out again, and then
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14 * compares the two files. If the files are identical, this shows that
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15 * the basic chunk handling, filtering, and (de)compression code is working
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16 * properly. It does not currently test all of the transforms, although
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17 * it probably should.
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18 *
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19 * The program will report "FAIL" in certain legitimate cases:
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20 * 1) when the compression level or filter selection method is changed.
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21 * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
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22 * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
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23 * exist in the input file.
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24 * 4) others not listed here...
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25 * In these cases, it is best to check with another tool such as "pngcheck"
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26 * to see what the differences between the two files are.
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27 *
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28 * If a filename is given on the command-line, then this file is used
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29 * for the input, rather than the default "pngtest.png". This allows
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30 * testing a wide variety of files easily. You can also test a number
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31 * of files at once by typing "pngtest -m file1.png file2.png ..."
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32 */
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33
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34 #define _POSIX_SOURCE 1
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35
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36 #include <stdio.h>
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37 #include <stdlib.h>
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38 #include <string.h>
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39
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40 /* Defined so I can write to a file on gui/windowing platforms */
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41 /* #define STDERR stderr */
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42 #define STDERR stdout /* For DOS */
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43
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44 #include "png.h"
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45
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46 /* Known chunks that exist in pngtest.png must be supported or pngtest will fail
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47 * simply as a result of re-ordering them. This may be fixed in 1.7
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48 *
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49 * pngtest allocates a single row buffer for each row and overwrites it,
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50 * therefore if the write side doesn't support the writing of interlaced images
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51 * nothing can be done for an interlaced image (and the code below will fail
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52 * horribly trying to write extra data after writing garbage).
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53 */
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54 #if defined PNG_READ_SUPPORTED && /* else nothing can be done */\
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55 defined PNG_READ_bKGD_SUPPORTED &&\
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56 defined PNG_READ_cHRM_SUPPORTED &&\
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57 defined PNG_READ_gAMA_SUPPORTED &&\
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58 defined PNG_READ_oFFs_SUPPORTED &&\
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59 defined PNG_READ_pCAL_SUPPORTED &&\
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60 defined PNG_READ_pHYs_SUPPORTED &&\
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61 defined PNG_READ_sBIT_SUPPORTED &&\
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62 defined PNG_READ_sCAL_SUPPORTED &&\
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63 defined PNG_READ_sRGB_SUPPORTED &&\
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64 defined PNG_READ_tEXt_SUPPORTED &&\
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65 defined PNG_READ_tIME_SUPPORTED &&\
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66 defined PNG_READ_zTXt_SUPPORTED &&\
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67 defined PNG_WRITE_INTERLACING_SUPPORTED
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68
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69 #ifdef PNG_ZLIB_HEADER
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70 # include PNG_ZLIB_HEADER /* defined by pnglibconf.h from 1.7 */
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71 #else
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72 # include "../../lib/zlib/zlib.h"
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73 #endif
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74
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75 /* Copied from pngpriv.h but only used in error messages below. */
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76 #ifndef PNG_ZBUF_SIZE
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77 # define PNG_ZBUF_SIZE 8192
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78 #endif
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79 #define FCLOSE(file) fclose(file)
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80
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81 #ifndef PNG_STDIO_SUPPORTED
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82 typedef FILE * png_FILE_p;
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83 #endif
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84
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85 /* Makes pngtest verbose so we can find problems. */
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86 #ifndef PNG_DEBUG
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87 # define PNG_DEBUG 0
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88 #endif
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89
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90 #if PNG_DEBUG > 1
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91 # define pngtest_debug(m) ((void)fprintf(stderr, m "\n"))
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92 # define pngtest_debug1(m,p1) ((void)fprintf(stderr, m "\n", p1))
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93 # define pngtest_debug2(m,p1,p2) ((void)fprintf(stderr, m "\n", p1, p2))
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94 #else
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95 # define pngtest_debug(m) ((void)0)
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96 # define pngtest_debug1(m,p1) ((void)0)
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97 # define pngtest_debug2(m,p1,p2) ((void)0)
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98 #endif
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99
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100 #if !PNG_DEBUG
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101 # define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
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102 #endif
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103
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104 /* Turn on CPU timing
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105 #define PNGTEST_TIMING
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106 */
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107
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108 #ifndef PNG_FLOATING_POINT_SUPPORTED
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109 #undef PNGTEST_TIMING
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110 #endif
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111
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112 #ifdef PNGTEST_TIMING
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113 static float t_start, t_stop, t_decode, t_encode, t_misc;
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114 #include <time.h>
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115 #endif
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116
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117 #ifdef PNG_TIME_RFC1123_SUPPORTED
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118 #define PNG_tIME_STRING_LENGTH 29
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119 static int tIME_chunk_present = 0;
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120 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
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121 #endif
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122
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123 static int verbose = 0;
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124 static int strict = 0;
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125 static int relaxed = 0;
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126 static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */
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127 static int error_count = 0; /* count calls to png_error */
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128 static int warning_count = 0; /* count calls to png_warning */
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129
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130 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
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131 #ifndef png_jmpbuf
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132 # define png_jmpbuf(png_ptr) png_ptr->jmpbuf
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133 #endif
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134
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135 /* Defines for unknown chunk handling if required. */
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136 #ifndef PNG_HANDLE_CHUNK_ALWAYS
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137 # define PNG_HANDLE_CHUNK_ALWAYS 3
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138 #endif
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139 #ifndef PNG_HANDLE_CHUNK_IF_SAFE
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140 # define PNG_HANDLE_CHUNK_IF_SAFE 2
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141 #endif
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142
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143 /* Utility to save typing/errors, the argument must be a name */
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144 #define MEMZERO(var) ((void)memset(&var, 0, sizeof var))
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145
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146 /* Example of using row callbacks to make a simple progress meter */
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147 static int status_pass = 1;
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148 static int status_dots_requested = 0;
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149 static int status_dots = 1;
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150
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151 static void PNGCBAPI
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152 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
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153 {
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154 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
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155 return;
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156
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157 if (status_pass != pass)
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158 {
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159 fprintf(stdout, "\n Pass %d: ", pass);
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160 status_pass = pass;
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161 status_dots = 31;
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162 }
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163
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164 status_dots--;
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165
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166 if (status_dots == 0)
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167 {
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168 fprintf(stdout, "\n ");
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169 status_dots=30;
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170 }
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171
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172 fprintf(stdout, "r");
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173 }
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174
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175 #ifdef PNG_WRITE_SUPPORTED
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176 static void PNGCBAPI
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177 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
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178 {
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179 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
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180 return;
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181
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182 fprintf(stdout, "w");
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183 }
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184 #endif
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185
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186
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187 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
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188 /* Example of using user transform callback (we don't transform anything,
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189 * but merely examine the row filters. We set this to 256 rather than
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190 * 5 in case illegal filter values are present.)
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191 */
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192 static png_uint_32 filters_used[256];
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193 static void PNGCBAPI
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194 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
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195 {
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196 if (png_ptr != NULL && row_info != NULL)
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197 ++filters_used[*(data - 1)];
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198 }
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199 #endif
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200
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201 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
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202 /* Example of using user transform callback (we don't transform anything,
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203 * but merely count the zero samples)
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204 */
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205
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206 static png_uint_32 zero_samples;
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207
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208 static void PNGCBAPI
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209 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
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210 {
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211 png_bytep dp = data;
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212 if (png_ptr == NULL)
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213 return;
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214
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215 /* Contents of row_info:
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216 * png_uint_32 width width of row
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217 * png_uint_32 rowbytes number of bytes in row
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218 * png_byte color_type color type of pixels
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219 * png_byte bit_depth bit depth of samples
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220 * png_byte channels number of channels (1-4)
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221 * png_byte pixel_depth bits per pixel (depth*channels)
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222 */
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223
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224 /* Counts the number of zero samples (or zero pixels if color_type is 3 */
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225
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226 if (row_info->color_type == 0 || row_info->color_type == 3)
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227 {
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228 int pos = 0;
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229 png_uint_32 n, nstop;
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230
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231 for (n = 0, nstop=row_info->width; n<nstop; n++)
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232 {
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233 if (row_info->bit_depth == 1)
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234 {
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235 if (((*dp << pos++ ) & 0x80) == 0)
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236 zero_samples++;
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237
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238 if (pos == 8)
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239 {
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240 pos = 0;
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241 dp++;
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242 }
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243 }
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244
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245 if (row_info->bit_depth == 2)
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246 {
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247 if (((*dp << (pos+=2)) & 0xc0) == 0)
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248 zero_samples++;
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249
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250 if (pos == 8)
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251 {
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252 pos = 0;
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253 dp++;
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254 }
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255 }
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256
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257 if (row_info->bit_depth == 4)
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258 {
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259 if (((*dp << (pos+=4)) & 0xf0) == 0)
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260 zero_samples++;
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261
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262 if (pos == 8)
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263 {
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264 pos = 0;
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265 dp++;
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266 }
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267 }
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268
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269 if (row_info->bit_depth == 8)
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270 if (*dp++ == 0)
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271 zero_samples++;
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272
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273 if (row_info->bit_depth == 16)
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274 {
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275 if ((*dp | *(dp+1)) == 0)
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276 zero_samples++;
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277 dp+=2;
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278 }
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279 }
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280 }
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281 else /* Other color types */
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282 {
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283 png_uint_32 n, nstop;
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284 int channel;
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285 int color_channels = row_info->channels;
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286 if (row_info->color_type > 3)color_channels--;
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287
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288 for (n = 0, nstop=row_info->width; n<nstop; n++)
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289 {
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290 for (channel = 0; channel < color_channels; channel++)
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291 {
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292 if (row_info->bit_depth == 8)
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293 if (*dp++ == 0)
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294 zero_samples++;
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295
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296 if (row_info->bit_depth == 16)
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297 {
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298 if ((*dp | *(dp+1)) == 0)
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299 zero_samples++;
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300
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301 dp+=2;
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302 }
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303 }
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304 if (row_info->color_type > 3)
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305 {
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306 dp++;
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307 if (row_info->bit_depth == 16)
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308 dp++;
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309 }
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310 }
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311 }
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312 }
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313 #endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
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314
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315 #ifndef PNG_STDIO_SUPPORTED
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316 /* START of code to validate stdio-free compilation */
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317 /* These copies of the default read/write functions come from pngrio.c and
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318 * pngwio.c. They allow "don't include stdio" testing of the library.
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319 * This is the function that does the actual reading of data. If you are
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320 * not reading from a standard C stream, you should create a replacement
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321 * read_data function and use it at run time with png_set_read_fn(), rather
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322 * than changing the library.
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323 */
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324
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325 #ifdef PNG_IO_STATE_SUPPORTED
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326 void
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327 pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
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328 png_uint_32 io_op);
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329 void
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330 pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
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331 png_uint_32 io_op)
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332 {
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333 png_uint_32 io_state = png_get_io_state(png_ptr);
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334 int err = 0;
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335
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336 /* Check if the current operation (reading / writing) is as expected. */
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337 if ((io_state & PNG_IO_MASK_OP) != io_op)
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338 png_error(png_ptr, "Incorrect operation in I/O state");
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339
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340 /* Check if the buffer size specific to the current location
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341 * (file signature / header / data / crc) is as expected.
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342 */
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343 switch (io_state & PNG_IO_MASK_LOC)
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344 {
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345 case PNG_IO_SIGNATURE:
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346 if (data_length > 8)
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347 err = 1;
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348 break;
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349 case PNG_IO_CHUNK_HDR:
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350 if (data_length != 8)
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351 err = 1;
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352 break;
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353 case PNG_IO_CHUNK_DATA:
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354 break; /* no restrictions here */
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355 case PNG_IO_CHUNK_CRC:
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356 if (data_length != 4)
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357 err = 1;
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358 break;
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359 default:
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360 err = 1; /* uninitialized */
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361 }
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362 if (err)
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363 png_error(png_ptr, "Bad I/O state or buffer size");
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364 }
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365 #endif
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366
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367 static void PNGCBAPI
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368 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
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369 {
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370 png_size_t check = 0;
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371 png_voidp io_ptr;
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372
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373 /* fread() returns 0 on error, so it is OK to store this in a png_size_t
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374 * instead of an int, which is what fread() actually returns.
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375 */
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376 io_ptr = png_get_io_ptr(png_ptr);
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377 if (io_ptr != NULL)
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378 {
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379 check = fread(data, 1, length, (png_FILE_p)io_ptr);
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380 }
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381
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382 if (check != length)
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383 {
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384 png_error(png_ptr, "Read Error");
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385 }
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386
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387 #ifdef PNG_IO_STATE_SUPPORTED
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388 pngtest_check_io_state(png_ptr, length, PNG_IO_READING);
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389 #endif
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390 }
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391
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392 #ifdef PNG_WRITE_FLUSH_SUPPORTED
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393 static void PNGCBAPI
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394 pngtest_flush(png_structp png_ptr)
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395 {
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396 /* Do nothing; fflush() is said to be just a waste of energy. */
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397 PNG_UNUSED(png_ptr) /* Stifle compiler warning */
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398 }
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399 #endif
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400
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401 /* This is the function that does the actual writing of data. If you are
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402 * not writing to a standard C stream, you should create a replacement
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403 * write_data function and use it at run time with png_set_write_fn(), rather
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404 * than changing the library.
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405 */
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406 static void PNGCBAPI
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407 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
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408 {
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409 png_size_t check;
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410
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411 check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));
|
|
|
412
|
|
|
413 if (check != length)
|
|
|
414 {
|
|
|
415 png_error(png_ptr, "Write Error");
|
|
|
416 }
|
|
|
417
|
|
|
418 #ifdef PNG_IO_STATE_SUPPORTED
|
|
|
419 pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING);
|
|
|
420 #endif
|
|
|
421 }
|
|
|
422 #endif /* !PNG_STDIO_SUPPORTED */
|
|
|
423
|
|
|
424 /* This function is called when there is a warning, but the library thinks
|
|
|
425 * it can continue anyway. Replacement functions don't have to do anything
|
|
|
426 * here if you don't want to. In the default configuration, png_ptr is
|
|
|
427 * not used, but it is passed in case it may be useful.
|
|
|
428 */
|
|
|
429 typedef struct
|
|
|
430 {
|
|
|
431 PNG_CONST char *file_name;
|
|
|
432 } pngtest_error_parameters;
|
|
|
433
|
|
|
434 static void PNGCBAPI
|
|
|
435 pngtest_warning(png_structp png_ptr, png_const_charp message)
|
|
|
436 {
|
|
|
437 PNG_CONST char *name = "UNKNOWN (ERROR!)";
|
|
|
438 pngtest_error_parameters *test =
|
|
|
439 (pngtest_error_parameters*)png_get_error_ptr(png_ptr);
|
|
|
440
|
|
|
441 ++warning_count;
|
|
|
442
|
|
|
443 if (test != NULL && test->file_name != NULL)
|
|
|
444 name = test->file_name;
|
|
|
445
|
|
|
446 fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
|
|
|
447 }
|
|
|
448
|
|
|
449 /* This is the default error handling function. Note that replacements for
|
|
|
450 * this function MUST NOT RETURN, or the program will likely crash. This
|
|
|
451 * function is used by default, or if the program supplies NULL for the
|
|
|
452 * error function pointer in png_set_error_fn().
|
|
|
453 */
|
|
|
454 static void PNGCBAPI
|
|
|
455 pngtest_error(png_structp png_ptr, png_const_charp message)
|
|
|
456 {
|
|
|
457 ++error_count;
|
|
|
458
|
|
|
459 pngtest_warning(png_ptr, message);
|
|
|
460 /* We can return because png_error calls the default handler, which is
|
|
|
461 * actually OK in this case.
|
|
|
462 */
|
|
|
463 }
|
|
|
464
|
|
|
465 /* END of code to validate stdio-free compilation */
|
|
|
466
|
|
|
467 /* START of code to validate memory allocation and deallocation */
|
|
|
468 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
469
|
|
|
470 /* Allocate memory. For reasonable files, size should never exceed
|
|
|
471 * 64K. However, zlib may allocate more then 64K if you don't tell
|
|
|
472 * it not to. See zconf.h and png.h for more information. zlib does
|
|
|
473 * need to allocate exactly 64K, so whatever you call here must
|
|
|
474 * have the ability to do that.
|
|
|
475 *
|
|
|
476 * This piece of code can be compiled to validate max 64K allocations
|
|
|
477 * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
|
|
|
478 */
|
|
|
479 typedef struct memory_information
|
|
|
480 {
|
|
|
481 png_alloc_size_t size;
|
|
|
482 png_voidp pointer;
|
|
|
483 struct memory_information *next;
|
|
|
484 } memory_information;
|
|
|
485 typedef memory_information *memory_infop;
|
|
|
486
|
|
|
487 static memory_infop pinformation = NULL;
|
|
|
488 static int current_allocation = 0;
|
|
|
489 static int maximum_allocation = 0;
|
|
|
490 static int total_allocation = 0;
|
|
|
491 static int num_allocations = 0;
|
|
|
492
|
|
|
493 png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr,
|
|
|
494 png_alloc_size_t size));
|
|
|
495 void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
|
|
|
496
|
|
|
497 png_voidp
|
|
|
498 PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
|
|
|
499 {
|
|
|
500
|
|
|
501 /* png_malloc has already tested for NULL; png_create_struct calls
|
|
|
502 * png_debug_malloc directly, with png_ptr == NULL which is OK
|
|
|
503 */
|
|
|
504
|
|
|
505 if (size == 0)
|
|
|
506 return (NULL);
|
|
|
507
|
|
|
508 /* This calls the library allocator twice, once to get the requested
|
|
|
509 buffer and once to get a new free list entry. */
|
|
|
510 {
|
|
|
511 /* Disable malloc_fn and free_fn */
|
|
|
512 memory_infop pinfo;
|
|
|
513 png_set_mem_fn(png_ptr, NULL, NULL, NULL);
|
|
|
514 pinfo = (memory_infop)png_malloc(png_ptr,
|
|
|
515 (sizeof *pinfo));
|
|
|
516 pinfo->size = size;
|
|
|
517 current_allocation += size;
|
|
|
518 total_allocation += size;
|
|
|
519 num_allocations ++;
|
|
|
520
|
|
|
521 if (current_allocation > maximum_allocation)
|
|
|
522 maximum_allocation = current_allocation;
|
|
|
523
|
|
|
524 pinfo->pointer = png_malloc(png_ptr, size);
|
|
|
525 /* Restore malloc_fn and free_fn */
|
|
|
526
|
|
|
527 png_set_mem_fn(png_ptr,
|
|
|
528 NULL, png_debug_malloc, png_debug_free);
|
|
|
529
|
|
|
530 if (size != 0 && pinfo->pointer == NULL)
|
|
|
531 {
|
|
|
532 current_allocation -= size;
|
|
|
533 total_allocation -= size;
|
|
|
534 png_error(png_ptr,
|
|
|
535 "out of memory in pngtest->png_debug_malloc");
|
|
|
536 }
|
|
|
537
|
|
|
538 pinfo->next = pinformation;
|
|
|
539 pinformation = pinfo;
|
|
|
540 /* Make sure the caller isn't assuming zeroed memory. */
|
|
|
541 memset(pinfo->pointer, 0xdd, pinfo->size);
|
|
|
542
|
|
|
543 if (verbose)
|
|
|
544 printf("png_malloc %lu bytes at %p\n", (unsigned long)size,
|
|
|
545 pinfo->pointer);
|
|
|
546
|
|
|
547 return (png_voidp)(pinfo->pointer);
|
|
|
548 }
|
|
|
549 }
|
|
|
550
|
|
|
551 /* Free a pointer. It is removed from the list at the same time. */
|
|
|
552 void PNGCBAPI
|
|
|
553 png_debug_free(png_structp png_ptr, png_voidp ptr)
|
|
|
554 {
|
|
|
555 if (png_ptr == NULL)
|
|
|
556 fprintf(STDERR, "NULL pointer to png_debug_free.\n");
|
|
|
557
|
|
|
558 if (ptr == 0)
|
|
|
559 {
|
|
|
560 #if 0 /* This happens all the time. */
|
|
|
561 fprintf(STDERR, "WARNING: freeing NULL pointer\n");
|
|
|
562 #endif
|
|
|
563 return;
|
|
|
564 }
|
|
|
565
|
|
|
566 /* Unlink the element from the list. */
|
|
|
567 {
|
|
|
568 memory_infop *ppinfo = &pinformation;
|
|
|
569
|
|
|
570 for (;;)
|
|
|
571 {
|
|
|
572 memory_infop pinfo = *ppinfo;
|
|
|
573
|
|
|
574 if (pinfo->pointer == ptr)
|
|
|
575 {
|
|
|
576 *ppinfo = pinfo->next;
|
|
|
577 current_allocation -= pinfo->size;
|
|
|
578 if (current_allocation < 0)
|
|
|
579 fprintf(STDERR, "Duplicate free of memory\n");
|
|
|
580 /* We must free the list element too, but first kill
|
|
|
581 the memory that is to be freed. */
|
|
|
582 memset(ptr, 0x55, pinfo->size);
|
|
|
583 if (pinfo)
|
|
|
584 free(pinfo);
|
|
|
585 pinfo = NULL;
|
|
|
586 break;
|
|
|
587 }
|
|
|
588
|
|
|
589 if (pinfo->next == NULL)
|
|
|
590 {
|
|
|
591 fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
|
|
|
592 break;
|
|
|
593 }
|
|
|
594
|
|
|
595 ppinfo = &pinfo->next;
|
|
|
596 }
|
|
|
597 }
|
|
|
598
|
|
|
599 /* Finally free the data. */
|
|
|
600 if (verbose)
|
|
|
601 printf("Freeing %p\n", ptr);
|
|
|
602
|
|
|
603 if (ptr)
|
|
|
604 free(ptr);
|
|
|
605 ptr = NULL;
|
|
|
606 }
|
|
|
607 #endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
|
|
|
608 /* END of code to test memory allocation/deallocation */
|
|
|
609
|
|
|
610
|
|
|
611 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
|
|
|
612 /* Demonstration of user chunk support of the sTER and vpAg chunks */
|
|
|
613
|
|
|
614 /* (sTER is a public chunk not yet known by libpng. vpAg is a private
|
|
|
615 chunk used in ImageMagick to store "virtual page" size). */
|
|
|
616
|
|
|
617 static struct user_chunk_data
|
|
|
618 {
|
|
|
619 png_const_infop info_ptr;
|
|
|
620 png_uint_32 vpAg_width, vpAg_height;
|
|
|
621 png_byte vpAg_units;
|
|
|
622 png_byte sTER_mode;
|
|
|
623 int location[2];
|
|
|
624 }
|
|
|
625 user_chunk_data;
|
|
|
626
|
|
|
627 /* Used for location and order; zero means nothing. */
|
|
|
628 #define have_sTER 0x01
|
|
|
629 #define have_vpAg 0x02
|
|
|
630 #define before_PLTE 0x10
|
|
|
631 #define before_IDAT 0x20
|
|
|
632 #define after_IDAT 0x40
|
|
|
633
|
|
|
634 static void
|
|
|
635 init_callback_info(png_const_infop info_ptr)
|
|
|
636 {
|
|
|
637 MEMZERO(user_chunk_data);
|
|
|
638 user_chunk_data.info_ptr = info_ptr;
|
|
|
639 }
|
|
|
640
|
|
|
641 static int
|
|
|
642 set_location(png_structp png_ptr, struct user_chunk_data *data, int what)
|
|
|
643 {
|
|
|
644 int location;
|
|
|
645
|
|
|
646 if ((data->location[0] & what) || (data->location[1] & what))
|
|
|
647 return 0; /* already have one of these */
|
|
|
648
|
|
|
649 /* Find where we are (the code below zeros info_ptr to indicate that the
|
|
|
650 * chunks before the first IDAT have been read.)
|
|
|
651 */
|
|
|
652 if (data->info_ptr == NULL) /* after IDAT */
|
|
|
653 location = what | after_IDAT;
|
|
|
654
|
|
|
655 else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE))
|
|
|
656 location = what | before_IDAT;
|
|
|
657
|
|
|
658 else
|
|
|
659 location = what | before_PLTE;
|
|
|
660
|
|
|
661 if (data->location[0] == 0)
|
|
|
662 data->location[0] = location;
|
|
|
663
|
|
|
664 else
|
|
|
665 data->location[1] = location;
|
|
|
666
|
|
|
667 return 1; /* handled */
|
|
|
668 }
|
|
|
669
|
|
|
670 static int PNGCBAPI
|
|
|
671 read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk)
|
|
|
672 {
|
|
|
673 struct user_chunk_data *my_user_chunk_data =
|
|
|
674 (struct user_chunk_data*)png_get_user_chunk_ptr(png_ptr);
|
|
|
675
|
|
|
676 if (my_user_chunk_data == NULL)
|
|
|
677 png_error(png_ptr, "lost user chunk pointer");
|
|
|
678
|
|
|
679 /* Return one of the following:
|
|
|
680 * return (-n); chunk had an error
|
|
|
681 * return (0); did not recognize
|
|
|
682 * return (n); success
|
|
|
683 *
|
|
|
684 * The unknown chunk structure contains the chunk data:
|
|
|
685 * png_byte name[5];
|
|
|
686 * png_byte *data;
|
|
|
687 * png_size_t size;
|
|
|
688 *
|
|
|
689 * Note that libpng has already taken care of the CRC handling.
|
|
|
690 */
|
|
|
691
|
|
|
692 if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
|
|
|
693 chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
|
|
|
694 {
|
|
|
695 /* Found sTER chunk */
|
|
|
696 if (chunk->size != 1)
|
|
|
697 return (-1); /* Error return */
|
|
|
698
|
|
|
699 if (chunk->data[0] != 0 && chunk->data[0] != 1)
|
|
|
700 return (-1); /* Invalid mode */
|
|
|
701
|
|
|
702 if (set_location(png_ptr, my_user_chunk_data, have_sTER))
|
|
|
703 {
|
|
|
704 my_user_chunk_data->sTER_mode=chunk->data[0];
|
|
|
705 return (1);
|
|
|
706 }
|
|
|
707
|
|
|
708 else
|
|
|
709 return (0); /* duplicate sTER - give it to libpng */
|
|
|
710 }
|
|
|
711
|
|
|
712 if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
|
|
|
713 chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
|
|
|
714 return (0); /* Did not recognize */
|
|
|
715
|
|
|
716 /* Found ImageMagick vpAg chunk */
|
|
|
717
|
|
|
718 if (chunk->size != 9)
|
|
|
719 return (-1); /* Error return */
|
|
|
720
|
|
|
721 if (!set_location(png_ptr, my_user_chunk_data, have_vpAg))
|
|
|
722 return (0); /* duplicate vpAg */
|
|
|
723
|
|
|
724 my_user_chunk_data->vpAg_width = png_get_uint_31(png_ptr, chunk->data);
|
|
|
725 my_user_chunk_data->vpAg_height = png_get_uint_31(png_ptr, chunk->data + 4);
|
|
|
726 my_user_chunk_data->vpAg_units = chunk->data[8];
|
|
|
727
|
|
|
728 return (1);
|
|
|
729 }
|
|
|
730
|
|
|
731 #ifdef PNG_WRITE_SUPPORTED
|
|
|
732 static void
|
|
|
733 write_sTER_chunk(png_structp write_ptr)
|
|
|
734 {
|
|
|
735 png_byte sTER[5] = {115, 84, 69, 82, '\0'};
|
|
|
736
|
|
|
737 if (verbose)
|
|
|
738 fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode);
|
|
|
739
|
|
|
740 png_write_chunk(write_ptr, sTER, &user_chunk_data.sTER_mode, 1);
|
|
|
741 }
|
|
|
742
|
|
|
743 static void
|
|
|
744 write_vpAg_chunk(png_structp write_ptr)
|
|
|
745 {
|
|
|
746 png_byte vpAg[5] = {118, 112, 65, 103, '\0'};
|
|
|
747
|
|
|
748 png_byte vpag_chunk_data[9];
|
|
|
749
|
|
|
750 if (verbose)
|
|
|
751 fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n",
|
|
|
752 (unsigned long)user_chunk_data.vpAg_width,
|
|
|
753 (unsigned long)user_chunk_data.vpAg_height,
|
|
|
754 user_chunk_data.vpAg_units);
|
|
|
755
|
|
|
756 png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width);
|
|
|
757 png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height);
|
|
|
758 vpag_chunk_data[8] = user_chunk_data.vpAg_units;
|
|
|
759 png_write_chunk(write_ptr, vpAg, vpag_chunk_data, 9);
|
|
|
760 }
|
|
|
761
|
|
|
762 static void
|
|
|
763 write_chunks(png_structp write_ptr, int location)
|
|
|
764 {
|
|
|
765 int i;
|
|
|
766
|
|
|
767 /* Notice that this preserves the original chunk order, however chunks
|
|
|
768 * intercepted by the callback will be written *after* chunks passed to
|
|
|
769 * libpng. This will actually reverse a pair of sTER chunks or a pair of
|
|
|
770 * vpAg chunks, resulting in an error later. This is not worth worrying
|
|
|
771 * about - the chunks should not be duplicated!
|
|
|
772 */
|
|
|
773 for (i=0; i<2; ++i)
|
|
|
774 {
|
|
|
775 if (user_chunk_data.location[i] == (location | have_sTER))
|
|
|
776 write_sTER_chunk(write_ptr);
|
|
|
777
|
|
|
778 else if (user_chunk_data.location[i] == (location | have_vpAg))
|
|
|
779 write_vpAg_chunk(write_ptr);
|
|
|
780 }
|
|
|
781 }
|
|
|
782 #endif /* PNG_WRITE_SUPPORTED */
|
|
|
783 #else /* !PNG_READ_USER_CHUNKS_SUPPORTED */
|
|
|
784 # define write_chunks(pp,loc) ((void)0)
|
|
|
785 #endif
|
|
|
786 /* END of code to demonstrate user chunk support */
|
|
|
787
|
|
|
788 /* START of code to check that libpng has the required text support; this only
|
|
|
789 * checks for the write support because if read support is missing the chunk
|
|
|
790 * will simply not be reported back to pngtest.
|
|
|
791 */
|
|
|
792 #ifdef PNG_TEXT_SUPPORTED
|
|
|
793 static void
|
|
|
794 pngtest_check_text_support(png_const_structp png_ptr, png_textp text_ptr,
|
|
|
795 int num_text)
|
|
|
796 {
|
|
|
797 while (num_text > 0)
|
|
|
798 {
|
|
|
799 switch (text_ptr[--num_text].compression)
|
|
|
800 {
|
|
|
801 case PNG_TEXT_COMPRESSION_NONE:
|
|
|
802 break;
|
|
|
803
|
|
|
804 case PNG_TEXT_COMPRESSION_zTXt:
|
|
|
805 # ifndef PNG_WRITE_zTXt_SUPPORTED
|
|
|
806 ++unsupported_chunks;
|
|
|
807 # endif
|
|
|
808 break;
|
|
|
809
|
|
|
810 case PNG_ITXT_COMPRESSION_NONE:
|
|
|
811 case PNG_ITXT_COMPRESSION_zTXt:
|
|
|
812 # ifndef PNG_WRITE_iTXt_SUPPORTED
|
|
|
813 ++unsupported_chunks;
|
|
|
814 # endif
|
|
|
815 break;
|
|
|
816
|
|
|
817 default:
|
|
|
818 /* This is an error */
|
|
|
819 png_error(png_ptr, "invalid text chunk compression field");
|
|
|
820 break;
|
|
|
821 }
|
|
|
822 }
|
|
|
823 }
|
|
|
824 #endif
|
|
|
825 /* END of code to check that libpng has the required text support */
|
|
|
826
|
|
|
827 /* Test one file */
|
|
|
828 static int
|
|
|
829 test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
|
|
|
830 {
|
|
|
831 static png_FILE_p fpin;
|
|
|
832 static png_FILE_p fpout; /* "static" prevents setjmp corruption */
|
|
|
833 pngtest_error_parameters error_parameters;
|
|
|
834 png_structp read_ptr;
|
|
|
835 png_infop read_info_ptr, end_info_ptr;
|
|
|
836 #ifdef PNG_WRITE_SUPPORTED
|
|
|
837 png_structp write_ptr;
|
|
|
838 png_infop write_info_ptr;
|
|
|
839 png_infop write_end_info_ptr;
|
|
|
840 int interlace_preserved = 1;
|
|
|
841 #else
|
|
|
842 png_structp write_ptr = NULL;
|
|
|
843 png_infop write_info_ptr = NULL;
|
|
|
844 png_infop write_end_info_ptr = NULL;
|
|
|
845 #endif
|
|
|
846 png_bytep row_buf;
|
|
|
847 png_uint_32 y;
|
|
|
848 png_uint_32 width, height;
|
|
|
849 int num_pass = 1, pass;
|
|
|
850 int bit_depth, color_type;
|
|
|
851
|
|
|
852 row_buf = NULL;
|
|
|
853 error_parameters.file_name = inname;
|
|
|
854
|
|
|
855 if ((fpin = fopen(inname, "rb")) == NULL)
|
|
|
856 {
|
|
|
857 fprintf(STDERR, "Could not find input file %s\n", inname);
|
|
|
858 return (1);
|
|
|
859 }
|
|
|
860
|
|
|
861 if ((fpout = fopen(outname, "wb")) == NULL)
|
|
|
862 {
|
|
|
863 fprintf(STDERR, "Could not open output file %s\n", outname);
|
|
|
864 FCLOSE(fpin);
|
|
|
865 return (1);
|
|
|
866 }
|
|
|
867
|
|
|
868 pngtest_debug("Allocating read and write structures");
|
|
|
869 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
870 read_ptr =
|
|
|
871 png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
|
|
|
872 NULL, NULL, NULL, png_debug_malloc, png_debug_free);
|
|
|
873 #else
|
|
|
874 read_ptr =
|
|
|
875 png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
|
876 #endif
|
|
|
877 png_set_error_fn(read_ptr, &error_parameters, pngtest_error,
|
|
|
878 pngtest_warning);
|
|
|
879
|
|
|
880 #ifdef PNG_WRITE_SUPPORTED
|
|
|
881 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
882 write_ptr =
|
|
|
883 png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
|
|
|
884 NULL, NULL, NULL, png_debug_malloc, png_debug_free);
|
|
|
885 #else
|
|
|
886 write_ptr =
|
|
|
887 png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
|
888 #endif
|
|
|
889 png_set_error_fn(write_ptr, &error_parameters, pngtest_error,
|
|
|
890 pngtest_warning);
|
|
|
891 #endif
|
|
|
892 pngtest_debug("Allocating read_info, write_info and end_info structures");
|
|
|
893 read_info_ptr = png_create_info_struct(read_ptr);
|
|
|
894 end_info_ptr = png_create_info_struct(read_ptr);
|
|
|
895 #ifdef PNG_WRITE_SUPPORTED
|
|
|
896 write_info_ptr = png_create_info_struct(write_ptr);
|
|
|
897 write_end_info_ptr = png_create_info_struct(write_ptr);
|
|
|
898 #endif
|
|
|
899
|
|
|
900 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
|
|
|
901 init_callback_info(read_info_ptr);
|
|
|
902 png_set_read_user_chunk_fn(read_ptr, &user_chunk_data,
|
|
|
903 read_user_chunk_callback);
|
|
|
904 #endif
|
|
|
905
|
|
|
906 #ifdef PNG_SETJMP_SUPPORTED
|
|
|
907 pngtest_debug("Setting jmpbuf for read struct");
|
|
|
908 if (setjmp(png_jmpbuf(read_ptr)))
|
|
|
909 {
|
|
|
910 fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
|
|
|
911 png_free(read_ptr, row_buf);
|
|
|
912 row_buf = NULL;
|
|
|
913 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
|
|
|
914 #ifdef PNG_WRITE_SUPPORTED
|
|
|
915 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
|
|
|
916 png_destroy_write_struct(&write_ptr, &write_info_ptr);
|
|
|
917 #endif
|
|
|
918 FCLOSE(fpin);
|
|
|
919 FCLOSE(fpout);
|
|
|
920 return (1);
|
|
|
921 }
|
|
|
922
|
|
|
923 #ifdef PNG_WRITE_SUPPORTED
|
|
|
924 pngtest_debug("Setting jmpbuf for write struct");
|
|
|
925
|
|
|
926 if (setjmp(png_jmpbuf(write_ptr)))
|
|
|
927 {
|
|
|
928 fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
|
|
|
929 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
|
|
|
930 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
|
|
|
931 #ifdef PNG_WRITE_SUPPORTED
|
|
|
932 png_destroy_write_struct(&write_ptr, &write_info_ptr);
|
|
|
933 #endif
|
|
|
934 FCLOSE(fpin);
|
|
|
935 FCLOSE(fpout);
|
|
|
936 return (1);
|
|
|
937 }
|
|
|
938 #endif
|
|
|
939 #endif
|
|
|
940
|
|
|
941 if (strict)
|
|
|
942 {
|
|
|
943 /* Treat png_benign_error() as errors on read */
|
|
|
944 png_set_benign_errors(read_ptr, 0);
|
|
|
945
|
|
|
946 #ifdef PNG_WRITE_SUPPORTED
|
|
|
947 /* Treat them as errors on write */
|
|
|
948 png_set_benign_errors(write_ptr, 0);
|
|
|
949 #endif
|
|
|
950
|
|
|
951 /* if strict is not set, then app warnings and errors are treated as
|
|
|
952 * warnings in release builds, but not in unstable builds; this can be
|
|
|
953 * changed with '--relaxed'.
|
|
|
954 */
|
|
|
955 }
|
|
|
956
|
|
|
957 else if (relaxed)
|
|
|
958 {
|
|
|
959 /* Allow application (pngtest) errors and warnings to pass */
|
|
|
960 png_set_benign_errors(read_ptr, 1);
|
|
|
961
|
|
|
962 #ifdef PNG_WRITE_SUPPORTED
|
|
|
963 png_set_benign_errors(write_ptr, 1);
|
|
|
964 #endif
|
|
|
965 }
|
|
|
966
|
|
|
967 pngtest_debug("Initializing input and output streams");
|
|
|
968 #ifdef PNG_STDIO_SUPPORTED
|
|
|
969 png_init_io(read_ptr, fpin);
|
|
|
970 # ifdef PNG_WRITE_SUPPORTED
|
|
|
971 png_init_io(write_ptr, fpout);
|
|
|
972 # endif
|
|
|
973 #else
|
|
|
974 png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
|
|
|
975 # ifdef PNG_WRITE_SUPPORTED
|
|
|
976 png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
|
|
|
977 # ifdef PNG_WRITE_FLUSH_SUPPORTED
|
|
|
978 pngtest_flush);
|
|
|
979 # else
|
|
|
980 NULL);
|
|
|
981 # endif
|
|
|
982 # endif
|
|
|
983 #endif
|
|
|
984
|
|
|
985 if (status_dots_requested == 1)
|
|
|
986 {
|
|
|
987 #ifdef PNG_WRITE_SUPPORTED
|
|
|
988 png_set_write_status_fn(write_ptr, write_row_callback);
|
|
|
989 #endif
|
|
|
990 png_set_read_status_fn(read_ptr, read_row_callback);
|
|
|
991 }
|
|
|
992
|
|
|
993 else
|
|
|
994 {
|
|
|
995 #ifdef PNG_WRITE_SUPPORTED
|
|
|
996 png_set_write_status_fn(write_ptr, NULL);
|
|
|
997 #endif
|
|
|
998 png_set_read_status_fn(read_ptr, NULL);
|
|
|
999 }
|
|
|
1000
|
|
|
1001 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
|
1002 {
|
|
|
1003 int i;
|
|
|
1004
|
|
|
1005 for (i = 0; i<256; i++)
|
|
|
1006 filters_used[i] = 0;
|
|
|
1007
|
|
|
1008 png_set_read_user_transform_fn(read_ptr, count_filters);
|
|
|
1009 }
|
|
|
1010 #endif
|
|
|
1011 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
|
1012 zero_samples = 0;
|
|
|
1013 png_set_write_user_transform_fn(write_ptr, count_zero_samples);
|
|
|
1014 #endif
|
|
|
1015
|
|
|
1016 #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
|
|
|
1017 /* Preserve all the unknown chunks, if possible. If this is disabled then,
|
|
|
1018 * even if the png_{get,set}_unknown_chunks stuff is enabled, we can't use
|
|
|
1019 * libpng to *save* the unknown chunks on read (because we can't switch the
|
|
|
1020 * save option on!)
|
|
|
1021 *
|
|
|
1022 * Notice that if SET_UNKNOWN_CHUNKS is *not* supported read will discard all
|
|
|
1023 * unknown chunks and write will write them all.
|
|
|
1024 */
|
|
|
1025 #ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
|
|
|
1026 png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
|
|
|
1027 NULL, 0);
|
|
|
1028 #endif
|
|
|
1029 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
|
1030 png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS,
|
|
|
1031 NULL, 0);
|
|
|
1032 #endif
|
|
|
1033 #endif
|
|
|
1034
|
|
|
1035 pngtest_debug("Reading info struct");
|
|
|
1036 png_read_info(read_ptr, read_info_ptr);
|
|
|
1037
|
|
|
1038 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
|
|
|
1039 /* This is a bit of a hack; there is no obvious way in the callback function
|
|
|
1040 * to determine that the chunks before the first IDAT have been read, so
|
|
|
1041 * remove the info_ptr (which is only used to determine position relative to
|
|
|
1042 * PLTE) here to indicate that we are after the IDAT.
|
|
|
1043 */
|
|
|
1044 user_chunk_data.info_ptr = NULL;
|
|
|
1045 #endif
|
|
|
1046
|
|
|
1047 pngtest_debug("Transferring info struct");
|
|
|
1048 {
|
|
|
1049 int interlace_type, compression_type, filter_type;
|
|
|
1050
|
|
|
1051 if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
|
|
|
1052 &color_type, &interlace_type, &compression_type, &filter_type))
|
|
|
1053 {
|
|
|
1054 png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
|
|
|
1055 color_type, interlace_type, compression_type, filter_type);
|
|
|
1056 #ifndef PNG_READ_INTERLACING_SUPPORTED
|
|
|
1057 /* num_pass will not be set below, set it here if the image is
|
|
|
1058 * interlaced: what happens is that write interlacing is *not* turned
|
|
|
1059 * on an the partial interlaced rows are written directly.
|
|
|
1060 */
|
|
|
1061 switch (interlace_type)
|
|
|
1062 {
|
|
|
1063 case PNG_INTERLACE_NONE:
|
|
|
1064 num_pass = 1;
|
|
|
1065 break;
|
|
|
1066
|
|
|
1067 case PNG_INTERLACE_ADAM7:
|
|
|
1068 num_pass = 7;
|
|
|
1069 break;
|
|
|
1070
|
|
|
1071 default:
|
|
|
1072 png_error(read_ptr, "invalid interlace type");
|
|
|
1073 /*NOT REACHED*/
|
|
|
1074 }
|
|
|
1075 #endif
|
|
|
1076 }
|
|
|
1077 }
|
|
|
1078 #ifdef PNG_FIXED_POINT_SUPPORTED
|
|
|
1079 #ifdef PNG_cHRM_SUPPORTED
|
|
|
1080 {
|
|
|
1081 png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
|
|
|
1082 blue_y;
|
|
|
1083
|
|
|
1084 if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
|
|
|
1085 &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
|
|
|
1086 {
|
|
|
1087 png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
|
|
|
1088 red_y, green_x, green_y, blue_x, blue_y);
|
|
|
1089 }
|
|
|
1090 }
|
|
|
1091 #endif
|
|
|
1092 #ifdef PNG_gAMA_SUPPORTED
|
|
|
1093 {
|
|
|
1094 png_fixed_point gamma;
|
|
|
1095
|
|
|
1096 if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
|
|
|
1097 png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
|
|
|
1098 }
|
|
|
1099 #endif
|
|
|
1100 #else /* Use floating point versions */
|
|
|
1101 #ifdef PNG_FLOATING_POINT_SUPPORTED
|
|
|
1102 #ifdef PNG_cHRM_SUPPORTED
|
|
|
1103 {
|
|
|
1104 double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
|
|
|
1105 blue_y;
|
|
|
1106
|
|
|
1107 if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
|
|
|
1108 &red_y, &green_x, &green_y, &blue_x, &blue_y))
|
|
|
1109 {
|
|
|
1110 png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
|
|
|
1111 red_y, green_x, green_y, blue_x, blue_y);
|
|
|
1112 }
|
|
|
1113 }
|
|
|
1114 #endif
|
|
|
1115 #ifdef PNG_gAMA_SUPPORTED
|
|
|
1116 {
|
|
|
1117 double gamma;
|
|
|
1118
|
|
|
1119 if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
|
|
|
1120 png_set_gAMA(write_ptr, write_info_ptr, gamma);
|
|
|
1121 }
|
|
|
1122 #endif
|
|
|
1123 #endif /* Floating point */
|
|
|
1124 #endif /* Fixed point */
|
|
|
1125 #ifdef PNG_iCCP_SUPPORTED
|
|
|
1126 {
|
|
|
1127 png_charp name;
|
|
|
1128 png_bytep profile;
|
|
|
1129 png_uint_32 proflen;
|
|
|
1130 int compression_type;
|
|
|
1131
|
|
|
1132 if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
|
|
|
1133 &profile, &proflen))
|
|
|
1134 {
|
|
|
1135 png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
|
|
|
1136 profile, proflen);
|
|
|
1137 }
|
|
|
1138 }
|
|
|
1139 #endif
|
|
|
1140 #ifdef PNG_sRGB_SUPPORTED
|
|
|
1141 {
|
|
|
1142 int intent;
|
|
|
1143
|
|
|
1144 if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
|
|
|
1145 png_set_sRGB(write_ptr, write_info_ptr, intent);
|
|
|
1146 }
|
|
|
1147 #endif
|
|
|
1148 {
|
|
|
1149 png_colorp palette;
|
|
|
1150 int num_palette;
|
|
|
1151
|
|
|
1152 if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
|
|
|
1153 png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
|
|
|
1154 }
|
|
|
1155 #ifdef PNG_bKGD_SUPPORTED
|
|
|
1156 {
|
|
|
1157 png_color_16p background;
|
|
|
1158
|
|
|
1159 if (png_get_bKGD(read_ptr, read_info_ptr, &background))
|
|
|
1160 {
|
|
|
1161 png_set_bKGD(write_ptr, write_info_ptr, background);
|
|
|
1162 }
|
|
|
1163 }
|
|
|
1164 #endif
|
|
|
1165 #ifdef PNG_hIST_SUPPORTED
|
|
|
1166 {
|
|
|
1167 png_uint_16p hist;
|
|
|
1168
|
|
|
1169 if (png_get_hIST(read_ptr, read_info_ptr, &hist))
|
|
|
1170 png_set_hIST(write_ptr, write_info_ptr, hist);
|
|
|
1171 }
|
|
|
1172 #endif
|
|
|
1173 #ifdef PNG_oFFs_SUPPORTED
|
|
|
1174 {
|
|
|
1175 png_int_32 offset_x, offset_y;
|
|
|
1176 int unit_type;
|
|
|
1177
|
|
|
1178 if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
|
|
|
1179 &unit_type))
|
|
|
1180 {
|
|
|
1181 png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
|
|
|
1182 }
|
|
|
1183 }
|
|
|
1184 #endif
|
|
|
1185 #ifdef PNG_pCAL_SUPPORTED
|
|
|
1186 {
|
|
|
1187 png_charp purpose, units;
|
|
|
1188 png_charpp params;
|
|
|
1189 png_int_32 X0, X1;
|
|
|
1190 int type, nparams;
|
|
|
1191
|
|
|
1192 if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
|
|
|
1193 &nparams, &units, ¶ms))
|
|
|
1194 {
|
|
|
1195 png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
|
|
|
1196 nparams, units, params);
|
|
|
1197 }
|
|
|
1198 }
|
|
|
1199 #endif
|
|
|
1200 #ifdef PNG_pHYs_SUPPORTED
|
|
|
1201 {
|
|
|
1202 png_uint_32 res_x, res_y;
|
|
|
1203 int unit_type;
|
|
|
1204
|
|
|
1205 if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
|
|
|
1206 png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
|
|
|
1207 }
|
|
|
1208 #endif
|
|
|
1209 #ifdef PNG_sBIT_SUPPORTED
|
|
|
1210 {
|
|
|
1211 png_color_8p sig_bit;
|
|
|
1212
|
|
|
1213 if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
|
|
|
1214 png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
|
|
|
1215 }
|
|
|
1216 #endif
|
|
|
1217 #ifdef PNG_sCAL_SUPPORTED
|
|
|
1218 #if defined(PNG_FLOATING_POINT_SUPPORTED) && \
|
|
|
1219 defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
|
|
|
1220 {
|
|
|
1221 int unit;
|
|
|
1222 double scal_width, scal_height;
|
|
|
1223
|
|
|
1224 if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
|
|
|
1225 &scal_height))
|
|
|
1226 {
|
|
|
1227 png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
|
|
|
1228 }
|
|
|
1229 }
|
|
|
1230 #else
|
|
|
1231 #ifdef PNG_FIXED_POINT_SUPPORTED
|
|
|
1232 {
|
|
|
1233 int unit;
|
|
|
1234 png_charp scal_width, scal_height;
|
|
|
1235
|
|
|
1236 if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
|
|
|
1237 &scal_height))
|
|
|
1238 {
|
|
|
1239 png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
|
|
|
1240 scal_height);
|
|
|
1241 }
|
|
|
1242 }
|
|
|
1243 #endif
|
|
|
1244 #endif
|
|
|
1245 #endif
|
|
|
1246 #ifdef PNG_TEXT_SUPPORTED
|
|
|
1247 {
|
|
|
1248 png_textp text_ptr;
|
|
|
1249 int num_text;
|
|
|
1250
|
|
|
1251 if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
|
|
|
1252 {
|
|
|
1253 pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
|
|
|
1254
|
|
|
1255 pngtest_check_text_support(read_ptr, text_ptr, num_text);
|
|
|
1256
|
|
|
1257 if (verbose)
|
|
|
1258 {
|
|
|
1259 int i;
|
|
|
1260
|
|
|
1261 printf("\n");
|
|
|
1262 for (i=0; i<num_text; i++)
|
|
|
1263 {
|
|
|
1264 printf(" Text compression[%d]=%d\n",
|
|
|
1265 i, text_ptr[i].compression);
|
|
|
1266 }
|
|
|
1267 }
|
|
|
1268
|
|
|
1269 png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
|
|
|
1270 }
|
|
|
1271 }
|
|
|
1272 #endif
|
|
|
1273 #ifdef PNG_tIME_SUPPORTED
|
|
|
1274 {
|
|
|
1275 png_timep mod_time;
|
|
|
1276
|
|
|
1277 if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
|
|
|
1278 {
|
|
|
1279 png_set_tIME(write_ptr, write_info_ptr, mod_time);
|
|
|
1280 #ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
|
1281 if (png_convert_to_rfc1123_buffer(tIME_string, mod_time))
|
|
|
1282 tIME_string[(sizeof tIME_string) - 1] = '\0';
|
|
|
1283
|
|
|
1284 else
|
|
|
1285 {
|
|
|
1286 strncpy(tIME_string, "*** invalid time ***", (sizeof tIME_string));
|
|
|
1287 tIME_string[(sizeof tIME_string) - 1] = '\0';
|
|
|
1288 }
|
|
|
1289
|
|
|
1290 tIME_chunk_present++;
|
|
|
1291 #endif /* PNG_TIME_RFC1123_SUPPORTED */
|
|
|
1292 }
|
|
|
1293 }
|
|
|
1294 #endif
|
|
|
1295 #ifdef PNG_tRNS_SUPPORTED
|
|
|
1296 {
|
|
|
1297 png_bytep trans_alpha;
|
|
|
1298 int num_trans;
|
|
|
1299 png_color_16p trans_color;
|
|
|
1300
|
|
|
1301 if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
|
|
|
1302 &trans_color))
|
|
|
1303 {
|
|
|
1304 int sample_max = (1 << bit_depth);
|
|
|
1305 /* libpng doesn't reject a tRNS chunk with out-of-range samples */
|
|
|
1306 if (!((color_type == PNG_COLOR_TYPE_GRAY &&
|
|
|
1307 (int)trans_color->gray > sample_max) ||
|
|
|
1308 (color_type == PNG_COLOR_TYPE_RGB &&
|
|
|
1309 ((int)trans_color->red > sample_max ||
|
|
|
1310 (int)trans_color->green > sample_max ||
|
|
|
1311 (int)trans_color->blue > sample_max))))
|
|
|
1312 png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
|
|
|
1313 trans_color);
|
|
|
1314 }
|
|
|
1315 }
|
|
|
1316 #endif
|
|
|
1317 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
|
1318 {
|
|
|
1319 png_unknown_chunkp unknowns;
|
|
|
1320 int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr,
|
|
|
1321 &unknowns);
|
|
|
1322
|
|
|
1323 if (num_unknowns)
|
|
|
1324 {
|
|
|
1325 png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
|
|
|
1326 num_unknowns);
|
|
|
1327 #if PNG_LIBPNG_VER < 10600
|
|
|
1328 /* Copy the locations from the read_info_ptr. The automatically
|
|
|
1329 * generated locations in write_end_info_ptr are wrong prior to 1.6.0
|
|
|
1330 * because they are reset from the write pointer (removed in 1.6.0).
|
|
|
1331 */
|
|
|
1332 {
|
|
|
1333 int i;
|
|
|
1334 for (i = 0; i < num_unknowns; i++)
|
|
|
1335 png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
|
|
|
1336 unknowns[i].location);
|
|
|
1337 }
|
|
|
1338 #endif
|
|
|
1339 }
|
|
|
1340 }
|
|
|
1341 #endif
|
|
|
1342
|
|
|
1343 #ifdef PNG_WRITE_SUPPORTED
|
|
|
1344 pngtest_debug("Writing info struct");
|
|
|
1345
|
|
|
1346 /* Write the info in two steps so that if we write the 'unknown' chunks here
|
|
|
1347 * they go to the correct place.
|
|
|
1348 */
|
|
|
1349 png_write_info_before_PLTE(write_ptr, write_info_ptr);
|
|
|
1350
|
|
|
1351 write_chunks(write_ptr, before_PLTE); /* before PLTE */
|
|
|
1352
|
|
|
1353 png_write_info(write_ptr, write_info_ptr);
|
|
|
1354
|
|
|
1355 write_chunks(write_ptr, before_IDAT); /* after PLTE */
|
|
|
1356 #endif
|
|
|
1357
|
|
|
1358 #ifdef SINGLE_ROWBUF_ALLOC
|
|
|
1359 pngtest_debug("Allocating row buffer...");
|
|
|
1360 row_buf = (png_bytep)png_malloc(read_ptr,
|
|
|
1361 png_get_rowbytes(read_ptr, read_info_ptr));
|
|
|
1362
|
|
|
1363 pngtest_debug1("\t0x%08lx", (unsigned long)row_buf);
|
|
|
1364 #endif /* SINGLE_ROWBUF_ALLOC */
|
|
|
1365 pngtest_debug("Writing row data");
|
|
|
1366
|
|
|
1367 #ifdef PNG_READ_INTERLACING_SUPPORTED
|
|
|
1368 num_pass = png_set_interlace_handling(read_ptr);
|
|
|
1369 if (png_set_interlace_handling(write_ptr) != num_pass)
|
|
|
1370 png_error(write_ptr, "png_set_interlace_handling: inconsistent num_pass");
|
|
|
1371 #endif
|
|
|
1372
|
|
|
1373 #ifdef PNGTEST_TIMING
|
|
|
1374 t_stop = (float)clock();
|
|
|
1375 t_misc += (t_stop - t_start);
|
|
|
1376 t_start = t_stop;
|
|
|
1377 #endif
|
|
|
1378 for (pass = 0; pass < num_pass; pass++)
|
|
|
1379 {
|
|
|
1380 pngtest_debug1("Writing row data for pass %d", pass);
|
|
|
1381 for (y = 0; y < height; y++)
|
|
|
1382 {
|
|
|
1383 #ifndef SINGLE_ROWBUF_ALLOC
|
|
|
1384 pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
|
|
|
1385 row_buf = (png_bytep)png_malloc(read_ptr,
|
|
|
1386 png_get_rowbytes(read_ptr, read_info_ptr));
|
|
|
1387
|
|
|
1388 pngtest_debug2("\t0x%08lx (%u bytes)", (unsigned long)row_buf,
|
|
|
1389 png_get_rowbytes(read_ptr, read_info_ptr));
|
|
|
1390
|
|
|
1391 #endif /* !SINGLE_ROWBUF_ALLOC */
|
|
|
1392 png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
|
|
|
1393
|
|
|
1394 #ifdef PNG_WRITE_SUPPORTED
|
|
|
1395 #ifdef PNGTEST_TIMING
|
|
|
1396 t_stop = (float)clock();
|
|
|
1397 t_decode += (t_stop - t_start);
|
|
|
1398 t_start = t_stop;
|
|
|
1399 #endif
|
|
|
1400 png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
|
|
|
1401 #ifdef PNGTEST_TIMING
|
|
|
1402 t_stop = (float)clock();
|
|
|
1403 t_encode += (t_stop - t_start);
|
|
|
1404 t_start = t_stop;
|
|
|
1405 #endif
|
|
|
1406 #endif /* PNG_WRITE_SUPPORTED */
|
|
|
1407
|
|
|
1408 #ifndef SINGLE_ROWBUF_ALLOC
|
|
|
1409 pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);
|
|
|
1410 png_free(read_ptr, row_buf);
|
|
|
1411 row_buf = NULL;
|
|
|
1412 #endif /* !SINGLE_ROWBUF_ALLOC */
|
|
|
1413 }
|
|
|
1414 }
|
|
|
1415
|
|
|
1416 #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
|
|
|
1417 # ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
|
|
|
1418 png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
|
|
|
1419 # endif
|
|
|
1420 # ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
|
1421 png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
|
|
|
1422 # endif
|
|
|
1423 #endif
|
|
|
1424
|
|
|
1425 pngtest_debug("Reading and writing end_info data");
|
|
|
1426
|
|
|
1427 png_read_end(read_ptr, end_info_ptr);
|
|
|
1428 #ifdef PNG_TEXT_SUPPORTED
|
|
|
1429 {
|
|
|
1430 png_textp text_ptr;
|
|
|
1431 int num_text;
|
|
|
1432
|
|
|
1433 if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
|
|
|
1434 {
|
|
|
1435 pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
|
|
|
1436
|
|
|
1437 pngtest_check_text_support(read_ptr, text_ptr, num_text);
|
|
|
1438
|
|
|
1439 if (verbose)
|
|
|
1440 {
|
|
|
1441 int i;
|
|
|
1442
|
|
|
1443 printf("\n");
|
|
|
1444 for (i=0; i<num_text; i++)
|
|
|
1445 {
|
|
|
1446 printf(" Text compression[%d]=%d\n",
|
|
|
1447 i, text_ptr[i].compression);
|
|
|
1448 }
|
|
|
1449 }
|
|
|
1450
|
|
|
1451 png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
|
|
|
1452 }
|
|
|
1453 }
|
|
|
1454 #endif
|
|
|
1455 #ifdef PNG_tIME_SUPPORTED
|
|
|
1456 {
|
|
|
1457 png_timep mod_time;
|
|
|
1458
|
|
|
1459 if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
|
|
|
1460 {
|
|
|
1461 png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
|
|
|
1462 #ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
|
1463 if (png_convert_to_rfc1123_buffer(tIME_string, mod_time))
|
|
|
1464 tIME_string[(sizeof tIME_string) - 1] = '\0';
|
|
|
1465
|
|
|
1466 else
|
|
|
1467 {
|
|
|
1468 strncpy(tIME_string, "*** invalid time ***", sizeof tIME_string);
|
|
|
1469 tIME_string[(sizeof tIME_string)-1] = '\0';
|
|
|
1470 }
|
|
|
1471
|
|
|
1472 tIME_chunk_present++;
|
|
|
1473 #endif /* PNG_TIME_RFC1123_SUPPORTED */
|
|
|
1474 }
|
|
|
1475 }
|
|
|
1476 #endif
|
|
|
1477 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
|
|
|
1478 {
|
|
|
1479 png_unknown_chunkp unknowns;
|
|
|
1480 int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr,
|
|
|
1481 &unknowns);
|
|
|
1482
|
|
|
1483 if (num_unknowns)
|
|
|
1484 {
|
|
|
1485 png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
|
|
|
1486 num_unknowns);
|
|
|
1487 #if PNG_LIBPNG_VER < 10600
|
|
|
1488 /* Copy the locations from the read_info_ptr. The automatically
|
|
|
1489 * generated locations in write_end_info_ptr are wrong prior to 1.6.0
|
|
|
1490 * because they are reset from the write pointer (removed in 1.6.0).
|
|
|
1491 */
|
|
|
1492 {
|
|
|
1493 int i;
|
|
|
1494 for (i = 0; i < num_unknowns; i++)
|
|
|
1495 png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
|
|
|
1496 unknowns[i].location);
|
|
|
1497 }
|
|
|
1498 #endif
|
|
|
1499 }
|
|
|
1500 }
|
|
|
1501 #endif
|
|
|
1502
|
|
|
1503 #ifdef PNG_WRITE_SUPPORTED
|
|
|
1504 #ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
|
|
|
1505 /* Normally one would use Z_DEFAULT_STRATEGY for text compression.
|
|
|
1506 * This is here just to make pngtest replicate the results from libpng
|
|
|
1507 * versions prior to 1.5.4, and to test this new API.
|
|
|
1508 */
|
|
|
1509 png_set_text_compression_strategy(write_ptr, Z_FILTERED);
|
|
|
1510 #endif
|
|
|
1511
|
|
|
1512 /* When the unknown vpAg/sTER chunks are written by pngtest the only way to
|
|
|
1513 * do it is to write them *before* calling png_write_end. When unknown
|
|
|
1514 * chunks are written by libpng, however, they are written just before IEND.
|
|
|
1515 * There seems to be no way round this, however vpAg/sTER are not expected
|
|
|
1516 * after IDAT.
|
|
|
1517 */
|
|
|
1518 write_chunks(write_ptr, after_IDAT);
|
|
|
1519
|
|
|
1520 png_write_end(write_ptr, write_end_info_ptr);
|
|
|
1521 #endif
|
|
|
1522
|
|
|
1523 #ifdef PNG_EASY_ACCESS_SUPPORTED
|
|
|
1524 if (verbose)
|
|
|
1525 {
|
|
|
1526 png_uint_32 iwidth, iheight;
|
|
|
1527 iwidth = png_get_image_width(write_ptr, write_info_ptr);
|
|
|
1528 iheight = png_get_image_height(write_ptr, write_info_ptr);
|
|
|
1529 fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
|
|
|
1530 (unsigned long)iwidth, (unsigned long)iheight);
|
|
|
1531 }
|
|
|
1532 #endif
|
|
|
1533
|
|
|
1534 pngtest_debug("Destroying data structs");
|
|
|
1535 #ifdef SINGLE_ROWBUF_ALLOC
|
|
|
1536 pngtest_debug("destroying row_buf for read_ptr");
|
|
|
1537 png_free(read_ptr, row_buf);
|
|
|
1538 row_buf = NULL;
|
|
|
1539 #endif /* SINGLE_ROWBUF_ALLOC */
|
|
|
1540 pngtest_debug("destroying read_ptr, read_info_ptr, end_info_ptr");
|
|
|
1541 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
|
|
|
1542 #ifdef PNG_WRITE_SUPPORTED
|
|
|
1543 pngtest_debug("destroying write_end_info_ptr");
|
|
|
1544 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
|
|
|
1545 pngtest_debug("destroying write_ptr, write_info_ptr");
|
|
|
1546 png_destroy_write_struct(&write_ptr, &write_info_ptr);
|
|
|
1547 #endif
|
|
|
1548 pngtest_debug("Destruction complete.");
|
|
|
1549
|
|
|
1550 FCLOSE(fpin);
|
|
|
1551 FCLOSE(fpout);
|
|
|
1552
|
|
|
1553 /* Summarize any warnings or errors and in 'strict' mode fail the test.
|
|
|
1554 * Unsupported chunks can result in warnings, in that case ignore the strict
|
|
|
1555 * setting, otherwise fail the test on warnings as well as errors.
|
|
|
1556 */
|
|
|
1557 if (error_count > 0)
|
|
|
1558 {
|
|
|
1559 /* We don't really expect to get here because of the setjmp handling
|
|
|
1560 * above, but this is safe.
|
|
|
1561 */
|
|
|
1562 fprintf(STDERR, "\n %s: %d libpng errors found (%d warnings)",
|
|
|
1563 inname, error_count, warning_count);
|
|
|
1564
|
|
|
1565 if (strict != 0)
|
|
|
1566 return (1);
|
|
|
1567 }
|
|
|
1568
|
|
|
1569 # ifdef PNG_WRITE_SUPPORTED
|
|
|
1570 /* If there we no write support nothing was written! */
|
|
|
1571 else if (unsupported_chunks > 0)
|
|
|
1572 {
|
|
|
1573 fprintf(STDERR, "\n %s: unsupported chunks (%d)%s",
|
|
|
1574 inname, unsupported_chunks, strict ? ": IGNORED --strict!" : "");
|
|
|
1575 }
|
|
|
1576 # endif
|
|
|
1577
|
|
|
1578 else if (warning_count > 0)
|
|
|
1579 {
|
|
|
1580 fprintf(STDERR, "\n %s: %d libpng warnings found",
|
|
|
1581 inname, warning_count);
|
|
|
1582
|
|
|
1583 if (strict != 0)
|
|
|
1584 return (1);
|
|
|
1585 }
|
|
|
1586
|
|
|
1587 pngtest_debug("Opening files for comparison");
|
|
|
1588 if ((fpin = fopen(inname, "rb")) == NULL)
|
|
|
1589 {
|
|
|
1590 fprintf(STDERR, "Could not find file %s\n", inname);
|
|
|
1591 return (1);
|
|
|
1592 }
|
|
|
1593
|
|
|
1594 if ((fpout = fopen(outname, "rb")) == NULL)
|
|
|
1595 {
|
|
|
1596 fprintf(STDERR, "Could not find file %s\n", outname);
|
|
|
1597 FCLOSE(fpin);
|
|
|
1598 return (1);
|
|
|
1599 }
|
|
|
1600
|
|
|
1601 #ifdef PNG_WRITE_SUPPORTED /* else nothing was written */
|
|
|
1602 if (interlace_preserved) /* else the files will be changed */
|
|
|
1603 {
|
|
|
1604 for (;;)
|
|
|
1605 {
|
|
|
1606 static int wrote_question = 0;
|
|
|
1607 png_size_t num_in, num_out;
|
|
|
1608 char inbuf[256], outbuf[256];
|
|
|
1609
|
|
|
1610 num_in = fread(inbuf, 1, sizeof inbuf, fpin);
|
|
|
1611 num_out = fread(outbuf, 1, sizeof outbuf, fpout);
|
|
|
1612
|
|
|
1613 if (num_in != num_out)
|
|
|
1614 {
|
|
|
1615 fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
|
|
|
1616 inname, outname);
|
|
|
1617
|
|
|
1618 if (wrote_question == 0 && unsupported_chunks == 0)
|
|
|
1619 {
|
|
|
1620 fprintf(STDERR,
|
|
|
1621 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
|
|
|
1622 inname, PNG_ZBUF_SIZE);
|
|
|
1623 fprintf(STDERR,
|
|
|
1624 "\n filtering heuristic (libpng default), compression");
|
|
|
1625 fprintf(STDERR,
|
|
|
1626 " level (zlib default),\n and zlib version (%s)?\n\n",
|
|
|
1627 ZLIB_VERSION);
|
|
|
1628 wrote_question = 1;
|
|
|
1629 }
|
|
|
1630
|
|
|
1631 FCLOSE(fpin);
|
|
|
1632 FCLOSE(fpout);
|
|
|
1633
|
|
|
1634 if (strict != 0 && unsupported_chunks == 0)
|
|
|
1635 return (1);
|
|
|
1636
|
|
|
1637 else
|
|
|
1638 return (0);
|
|
|
1639 }
|
|
|
1640
|
|
|
1641 if (!num_in)
|
|
|
1642 break;
|
|
|
1643
|
|
|
1644 if (memcmp(inbuf, outbuf, num_in))
|
|
|
1645 {
|
|
|
1646 fprintf(STDERR, "\nFiles %s and %s are different\n", inname,
|
|
|
1647 outname);
|
|
|
1648
|
|
|
1649 if (wrote_question == 0 && unsupported_chunks == 0)
|
|
|
1650 {
|
|
|
1651 fprintf(STDERR,
|
|
|
1652 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
|
|
|
1653 inname, PNG_ZBUF_SIZE);
|
|
|
1654 fprintf(STDERR,
|
|
|
1655 "\n filtering heuristic (libpng default), compression");
|
|
|
1656 fprintf(STDERR,
|
|
|
1657 " level (zlib default),\n and zlib version (%s)?\n\n",
|
|
|
1658 ZLIB_VERSION);
|
|
|
1659 wrote_question = 1;
|
|
|
1660 }
|
|
|
1661
|
|
|
1662 FCLOSE(fpin);
|
|
|
1663 FCLOSE(fpout);
|
|
|
1664
|
|
|
1665 /* NOTE: the unsupported_chunks escape is permitted here because
|
|
|
1666 * unsupported text chunk compression will result in the compression
|
|
|
1667 * mode being changed (to NONE) yet, in the test case, the result
|
|
|
1668 * can be exactly the same size!
|
|
|
1669 */
|
|
|
1670 if (strict != 0 && unsupported_chunks == 0)
|
|
|
1671 return (1);
|
|
|
1672
|
|
|
1673 else
|
|
|
1674 return (0);
|
|
|
1675 }
|
|
|
1676 }
|
|
|
1677 }
|
|
|
1678 #endif /* PNG_WRITE_SUPPORTED */
|
|
|
1679
|
|
|
1680 FCLOSE(fpin);
|
|
|
1681 FCLOSE(fpout);
|
|
|
1682
|
|
|
1683 return (0);
|
|
|
1684 }
|
|
|
1685
|
|
|
1686 /* Input and output filenames */
|
|
|
1687 #ifdef RISCOS
|
|
|
1688 static PNG_CONST char *inname = "pngtest/png";
|
|
|
1689 static PNG_CONST char *outname = "pngout/png";
|
|
|
1690 #else
|
|
|
1691 static PNG_CONST char *inname = "pngtest.png";
|
|
|
1692 static PNG_CONST char *outname = "pngout.png";
|
|
|
1693 #endif
|
|
|
1694
|
|
|
1695 int
|
|
|
1696 main(int argc, char *argv[])
|
|
|
1697 {
|
|
|
1698 int multiple = 0;
|
|
|
1699 int ierror = 0;
|
|
|
1700
|
|
|
1701 fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
|
|
|
1702 fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
|
|
|
1703 fprintf(STDERR, "%s", png_get_copyright(NULL));
|
|
|
1704 /* Show the version of libpng used in building the library */
|
|
|
1705 fprintf(STDERR, " library (%lu):%s",
|
|
|
1706 (unsigned long)png_access_version_number(),
|
|
|
1707 png_get_header_version(NULL));
|
|
|
1708
|
|
|
1709 /* Show the version of libpng used in building the application */
|
|
|
1710 fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
|
|
|
1711 PNG_HEADER_VERSION_STRING);
|
|
|
1712
|
|
|
1713 /* Do some consistency checking on the memory allocation settings, I'm
|
|
|
1714 * not sure this matters, but it is nice to know, the first of these
|
|
|
1715 * tests should be impossible because of the way the macros are set
|
|
|
1716 * in pngconf.h
|
|
|
1717 */
|
|
|
1718 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
|
|
|
1719 fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
|
|
|
1720 #endif
|
|
|
1721 /* I think the following can happen. */
|
|
|
1722 #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
|
|
|
1723 fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
|
|
|
1724 #endif
|
|
|
1725
|
|
|
1726 if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
|
|
|
1727 {
|
|
|
1728 fprintf(STDERR,
|
|
|
1729 "Warning: versions are different between png.h and png.c\n");
|
|
|
1730 fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
|
|
|
1731 fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
|
|
|
1732 ++ierror;
|
|
|
1733 }
|
|
|
1734
|
|
|
1735 if (argc > 1)
|
|
|
1736 {
|
|
|
1737 if (strcmp(argv[1], "-m") == 0)
|
|
|
1738 {
|
|
|
1739 multiple = 1;
|
|
|
1740 status_dots_requested = 0;
|
|
|
1741 }
|
|
|
1742
|
|
|
1743 else if (strcmp(argv[1], "-mv") == 0 ||
|
|
|
1744 strcmp(argv[1], "-vm") == 0 )
|
|
|
1745 {
|
|
|
1746 multiple = 1;
|
|
|
1747 verbose = 1;
|
|
|
1748 status_dots_requested = 1;
|
|
|
1749 }
|
|
|
1750
|
|
|
1751 else if (strcmp(argv[1], "-v") == 0)
|
|
|
1752 {
|
|
|
1753 verbose = 1;
|
|
|
1754 status_dots_requested = 1;
|
|
|
1755 inname = argv[2];
|
|
|
1756 }
|
|
|
1757
|
|
|
1758 else if (strcmp(argv[1], "--strict") == 0)
|
|
|
1759 {
|
|
|
1760 status_dots_requested = 0;
|
|
|
1761 verbose = 1;
|
|
|
1762 inname = argv[2];
|
|
|
1763 strict++;
|
|
|
1764 relaxed = 0;
|
|
|
1765 }
|
|
|
1766
|
|
|
1767 else if (strcmp(argv[1], "--relaxed") == 0)
|
|
|
1768 {
|
|
|
1769 status_dots_requested = 0;
|
|
|
1770 verbose = 1;
|
|
|
1771 inname = argv[2];
|
|
|
1772 strict = 0;
|
|
|
1773 relaxed++;
|
|
|
1774 }
|
|
|
1775
|
|
|
1776 else
|
|
|
1777 {
|
|
|
1778 inname = argv[1];
|
|
|
1779 status_dots_requested = 0;
|
|
|
1780 }
|
|
|
1781 }
|
|
|
1782
|
|
|
1783 if (!multiple && argc == 3 + verbose)
|
|
|
1784 outname = argv[2 + verbose];
|
|
|
1785
|
|
|
1786 if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
|
|
|
1787 {
|
|
|
1788 fprintf(STDERR,
|
|
|
1789 "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
|
|
|
1790 argv[0], argv[0]);
|
|
|
1791 fprintf(STDERR,
|
|
|
1792 " reads/writes one PNG file (without -m) or multiple files (-m)\n");
|
|
|
1793 fprintf(STDERR,
|
|
|
1794 " with -m %s is used as a temporary file\n", outname);
|
|
|
1795 exit(1);
|
|
|
1796 }
|
|
|
1797
|
|
|
1798 if (multiple)
|
|
|
1799 {
|
|
|
1800 int i;
|
|
|
1801 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
1802 int allocation_now = current_allocation;
|
|
|
1803 #endif
|
|
|
1804 for (i=2; i<argc; ++i)
|
|
|
1805 {
|
|
|
1806 int kerror;
|
|
|
1807 fprintf(STDERR, "\n Testing %s:", argv[i]);
|
|
|
1808 kerror = test_one_file(argv[i], outname);
|
|
|
1809 if (kerror == 0)
|
|
|
1810 {
|
|
|
1811 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
|
1812 int k;
|
|
|
1813 #endif
|
|
|
1814 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
|
1815 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
|
|
|
1816 (unsigned long)zero_samples);
|
|
|
1817 #else
|
|
|
1818 fprintf(STDERR, " PASS\n");
|
|
|
1819 #endif
|
|
|
1820 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
|
1821 for (k = 0; k<256; k++)
|
|
|
1822 if (filters_used[k])
|
|
|
1823 fprintf(STDERR, " Filter %d was used %lu times\n",
|
|
|
1824 k, (unsigned long)filters_used[k]);
|
|
|
1825 #endif
|
|
|
1826 #ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
|
1827 if (tIME_chunk_present != 0)
|
|
|
1828 fprintf(STDERR, " tIME = %s\n", tIME_string);
|
|
|
1829
|
|
|
1830 tIME_chunk_present = 0;
|
|
|
1831 #endif /* PNG_TIME_RFC1123_SUPPORTED */
|
|
|
1832 }
|
|
|
1833
|
|
|
1834 else
|
|
|
1835 {
|
|
|
1836 fprintf(STDERR, " FAIL\n");
|
|
|
1837 ierror += kerror;
|
|
|
1838 }
|
|
|
1839 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
1840 if (allocation_now != current_allocation)
|
|
|
1841 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
|
|
|
1842 current_allocation - allocation_now);
|
|
|
1843
|
|
|
1844 if (current_allocation != 0)
|
|
|
1845 {
|
|
|
1846 memory_infop pinfo = pinformation;
|
|
|
1847
|
|
|
1848 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
|
|
|
1849 current_allocation);
|
|
|
1850
|
|
|
1851 while (pinfo != NULL)
|
|
|
1852 {
|
|
|
1853 fprintf(STDERR, " %lu bytes at %x\n",
|
|
|
1854 (unsigned long)pinfo->size,
|
|
|
1855 (unsigned int)pinfo->pointer);
|
|
|
1856 pinfo = pinfo->next;
|
|
|
1857 }
|
|
|
1858 }
|
|
|
1859 #endif
|
|
|
1860 }
|
|
|
1861 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
1862 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
|
|
|
1863 current_allocation);
|
|
|
1864 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
|
|
|
1865 maximum_allocation);
|
|
|
1866 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
|
|
|
1867 total_allocation);
|
|
|
1868 fprintf(STDERR, " Number of allocations: %10d\n",
|
|
|
1869 num_allocations);
|
|
|
1870 #endif
|
|
|
1871 }
|
|
|
1872
|
|
|
1873 else
|
|
|
1874 {
|
|
|
1875 int i;
|
|
|
1876 for (i = 0; i<3; ++i)
|
|
|
1877 {
|
|
|
1878 int kerror;
|
|
|
1879 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
1880 int allocation_now = current_allocation;
|
|
|
1881 #endif
|
|
|
1882 if (i == 1)
|
|
|
1883 status_dots_requested = 1;
|
|
|
1884
|
|
|
1885 else if (verbose == 0)
|
|
|
1886 status_dots_requested = 0;
|
|
|
1887
|
|
|
1888 if (i == 0 || verbose == 1 || ierror != 0)
|
|
|
1889 fprintf(STDERR, "\n Testing %s:", inname);
|
|
|
1890
|
|
|
1891 kerror = test_one_file(inname, outname);
|
|
|
1892
|
|
|
1893 if (kerror == 0)
|
|
|
1894 {
|
|
|
1895 if (verbose == 1 || i == 2)
|
|
|
1896 {
|
|
|
1897 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
|
1898 int k;
|
|
|
1899 #endif
|
|
|
1900 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
|
|
|
1901 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
|
|
|
1902 (unsigned long)zero_samples);
|
|
|
1903 #else
|
|
|
1904 fprintf(STDERR, " PASS\n");
|
|
|
1905 #endif
|
|
|
1906 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
|
|
|
1907 for (k = 0; k<256; k++)
|
|
|
1908 if (filters_used[k])
|
|
|
1909 fprintf(STDERR, " Filter %d was used %lu times\n",
|
|
|
1910 k, (unsigned long)filters_used[k]);
|
|
|
1911 #endif
|
|
|
1912 #ifdef PNG_TIME_RFC1123_SUPPORTED
|
|
|
1913 if (tIME_chunk_present != 0)
|
|
|
1914 fprintf(STDERR, " tIME = %s\n", tIME_string);
|
|
|
1915 #endif /* PNG_TIME_RFC1123_SUPPORTED */
|
|
|
1916 }
|
|
|
1917 }
|
|
|
1918
|
|
|
1919 else
|
|
|
1920 {
|
|
|
1921 if (verbose == 0 && i != 2)
|
|
|
1922 fprintf(STDERR, "\n Testing %s:", inname);
|
|
|
1923
|
|
|
1924 fprintf(STDERR, " FAIL\n");
|
|
|
1925 ierror += kerror;
|
|
|
1926 }
|
|
|
1927 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
1928 if (allocation_now != current_allocation)
|
|
|
1929 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
|
|
|
1930 current_allocation - allocation_now);
|
|
|
1931
|
|
|
1932 if (current_allocation != 0)
|
|
|
1933 {
|
|
|
1934 memory_infop pinfo = pinformation;
|
|
|
1935
|
|
|
1936 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
|
|
|
1937 current_allocation);
|
|
|
1938
|
|
|
1939 while (pinfo != NULL)
|
|
|
1940 {
|
|
|
1941 fprintf(STDERR, " %lu bytes at %x\n",
|
|
|
1942 (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
|
|
|
1943 pinfo = pinfo->next;
|
|
|
1944 }
|
|
|
1945 }
|
|
|
1946 #endif
|
|
|
1947 }
|
|
|
1948 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
|
|
|
1949 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
|
|
|
1950 current_allocation);
|
|
|
1951 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
|
|
|
1952 maximum_allocation);
|
|
|
1953 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
|
|
|
1954 total_allocation);
|
|
|
1955 fprintf(STDERR, " Number of allocations: %10d\n",
|
|
|
1956 num_allocations);
|
|
|
1957 #endif
|
|
|
1958 }
|
|
|
1959
|
|
|
1960 #ifdef PNGTEST_TIMING
|
|
|
1961 t_stop = (float)clock();
|
|
|
1962 t_misc += (t_stop - t_start);
|
|
|
1963 t_start = t_stop;
|
|
|
1964 fprintf(STDERR, " CPU time used = %.3f seconds",
|
|
|
1965 (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
|
|
|
1966 fprintf(STDERR, " (decoding %.3f,\n",
|
|
|
1967 t_decode/(float)CLOCKS_PER_SEC);
|
|
|
1968 fprintf(STDERR, " encoding %.3f ,",
|
|
|
1969 t_encode/(float)CLOCKS_PER_SEC);
|
|
|
1970 fprintf(STDERR, " other %.3f seconds)\n\n",
|
|
|
1971 t_misc/(float)CLOCKS_PER_SEC);
|
|
|
1972 #endif
|
|
|
1973
|
|
|
1974 if (ierror == 0)
|
|
|
1975 fprintf(STDERR, " libpng passes test\n");
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1976
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1977 else
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1978 fprintf(STDERR, " libpng FAILS test\n");
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1979
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1980 return (int)(ierror != 0);
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1981 }
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1982 #else
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1983 int
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1984 main(void)
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1985 {
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1986 fprintf(STDERR,
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1987 " test ignored because libpng was not built with read support\n");
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1988 /* And skip this test */
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1989 return PNG_LIBPNG_VER < 10600 ? 0 : 77;
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1990 }
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1991 #endif
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1992
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1993 /* Generate a compiler error if there is an old png.h in the search path. */
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1994 typedef png_libpng_version_1_6_10 Your_png_h_is_not_version_1_6_10;
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