2 /* pngtest.c - a simple test program to test libpng
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4 * Copyright (c) 2018-2019 Cosmin Truta
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5 * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
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6 * Copyright (c) 1996-1997 Andreas Dilger
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7 * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
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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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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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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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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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34 #define _POSIX_SOURCE 1
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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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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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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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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_sPLT_SUPPORTED &&\
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65 defined PNG_READ_tEXt_SUPPORTED &&\
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66 defined PNG_READ_tIME_SUPPORTED &&\
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67 defined PNG_READ_zTXt_SUPPORTED &&\
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68 (defined PNG_WRITE_INTERLACING_SUPPORTED || PNG_LIBPNG_VER >= 10700)
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70 #ifdef PNG_ZLIB_HEADER
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71 # include PNG_ZLIB_HEADER /* defined by pnglibconf.h from 1.7 */
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76 /* Copied from pngpriv.h but only used in error messages below. */
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77 #ifndef PNG_ZBUF_SIZE
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78 # define PNG_ZBUF_SIZE 8192
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80 #define FCLOSE(file) fclose(file)
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82 #ifndef PNG_STDIO_SUPPORTED
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83 typedef FILE * png_FILE_p;
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86 /* Makes pngtest verbose so we can find problems. */
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88 # define PNG_DEBUG 0
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92 # define pngtest_debug(m) ((void)fprintf(stderr, m "\n"))
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93 # define pngtest_debug1(m,p1) ((void)fprintf(stderr, m "\n", p1))
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94 # define pngtest_debug2(m,p1,p2) ((void)fprintf(stderr, m "\n", p1, p2))
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96 # define pngtest_debug(m) ((void)0)
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97 # define pngtest_debug1(m,p1) ((void)0)
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98 # define pngtest_debug2(m,p1,p2) ((void)0)
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102 # define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
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106 # define PNG_UNUSED(param) (void)param;
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109 /* Turn on CPU timing
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110 #define PNGTEST_TIMING
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113 #ifndef PNG_FLOATING_POINT_SUPPORTED
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114 #undef PNGTEST_TIMING
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117 #ifdef PNGTEST_TIMING
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118 static float t_start, t_stop, t_decode, t_encode, t_misc;
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122 #ifdef PNG_TIME_RFC1123_SUPPORTED
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123 #define PNG_tIME_STRING_LENGTH 29
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124 static int tIME_chunk_present = 0;
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125 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
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127 #if PNG_LIBPNG_VER < 10619
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128 #define png_convert_to_rfc1123_buffer(ts, t) tIME_to_str(read_ptr, ts, t)
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131 tIME_to_str(png_structp png_ptr, png_charp ts, png_const_timep t)
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133 png_const_charp str = png_convert_to_rfc1123(png_ptr, t);
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141 #endif /* older libpng */
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144 static int verbose = 0;
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145 static int strict = 0;
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146 static int relaxed = 0;
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147 static int xfail = 0;
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148 static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */
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149 static int error_count = 0; /* count calls to png_error */
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150 static int warning_count = 0; /* count calls to png_warning */
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152 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
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154 # define png_jmpbuf(png_ptr) png_ptr->jmpbuf
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157 /* Defines for unknown chunk handling if required. */
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158 #ifndef PNG_HANDLE_CHUNK_ALWAYS
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159 # define PNG_HANDLE_CHUNK_ALWAYS 3
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161 #ifndef PNG_HANDLE_CHUNK_IF_SAFE
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162 # define PNG_HANDLE_CHUNK_IF_SAFE 2
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165 /* Utility to save typing/errors, the argument must be a name */
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166 #define MEMZERO(var) ((void)memset(&var, 0, sizeof var))
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168 /* Example of using row callbacks to make a simple progress meter */
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169 static int status_pass = 1;
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170 static int status_dots_requested = 0;
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171 static int status_dots = 1;
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173 static void PNGCBAPI
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174 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
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176 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
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179 if (status_pass != pass)
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181 fprintf(stdout, "\n Pass %d: ", pass);
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182 status_pass = pass;
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188 if (status_dots == 0)
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190 fprintf(stdout, "\n ");
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194 fprintf(stdout, "r");
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197 #ifdef PNG_WRITE_SUPPORTED
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198 static void PNGCBAPI
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199 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
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201 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
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204 fprintf(stdout, "w");
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209 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
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210 /* Example of using a user transform callback (doesn't do anything at present).
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212 static void PNGCBAPI
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213 read_user_callback(png_structp png_ptr, png_row_infop row_info, png_bytep data)
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215 PNG_UNUSED(png_ptr)
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216 PNG_UNUSED(row_info)
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221 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
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222 /* Example of using user transform callback (we don't transform anything,
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223 * but merely count the zero samples)
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226 static png_uint_32 zero_samples;
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228 static void PNGCBAPI
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229 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
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231 png_bytep dp = data;
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232 if (png_ptr == NULL)
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235 /* Contents of row_info:
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236 * png_uint_32 width width of row
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237 * png_uint_32 rowbytes number of bytes in row
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238 * png_byte color_type color type of pixels
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239 * png_byte bit_depth bit depth of samples
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240 * png_byte channels number of channels (1-4)
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241 * png_byte pixel_depth bits per pixel (depth*channels)
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244 /* Counts the number of zero samples (or zero pixels if color_type is 3 */
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246 if (row_info->color_type == 0 || row_info->color_type == 3)
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249 png_uint_32 n, nstop;
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251 for (n = 0, nstop=row_info->width; n<nstop; n++)
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253 if (row_info->bit_depth == 1)
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255 if (((*dp << pos++ ) & 0x80) == 0)
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265 if (row_info->bit_depth == 2)
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267 if (((*dp << (pos+=2)) & 0xc0) == 0)
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277 if (row_info->bit_depth == 4)
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279 if (((*dp << (pos+=4)) & 0xf0) == 0)
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289 if (row_info->bit_depth == 8)
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293 if (row_info->bit_depth == 16)
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295 if ((*dp | *(dp+1)) == 0)
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301 else /* Other color types */
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303 png_uint_32 n, nstop;
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305 int color_channels = row_info->channels;
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306 if (row_info->color_type > 3)
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309 for (n = 0, nstop=row_info->width; n<nstop; n++)
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311 for (channel = 0; channel < color_channels; channel++)
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313 if (row_info->bit_depth == 8)
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317 if (row_info->bit_depth == 16)
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319 if ((*dp | *(dp+1)) == 0)
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325 if (row_info->color_type > 3)
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328 if (row_info->bit_depth == 16)
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334 #endif /* WRITE_USER_TRANSFORM */
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336 #ifndef PNG_STDIO_SUPPORTED
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337 /* START of code to validate stdio-free compilation */
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338 /* These copies of the default read/write functions come from pngrio.c and
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339 * pngwio.c. They allow "don't include stdio" testing of the library.
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340 * This is the function that does the actual reading of data. If you are
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341 * not reading from a standard C stream, you should create a replacement
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342 * read_data function and use it at run time with png_set_read_fn(), rather
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343 * than changing the library.
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346 #ifdef PNG_IO_STATE_SUPPORTED
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348 pngtest_check_io_state(png_structp png_ptr, size_t data_length,
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349 png_uint_32 io_op);
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351 pngtest_check_io_state(png_structp png_ptr, size_t data_length,
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354 png_uint_32 io_state = png_get_io_state(png_ptr);
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357 /* Check if the current operation (reading / writing) is as expected. */
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358 if ((io_state & PNG_IO_MASK_OP) != io_op)
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359 png_error(png_ptr, "Incorrect operation in I/O state");
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361 /* Check if the buffer size specific to the current location
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362 * (file signature / header / data / crc) is as expected.
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364 switch (io_state & PNG_IO_MASK_LOC)
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366 case PNG_IO_SIGNATURE:
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367 if (data_length > 8)
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370 case PNG_IO_CHUNK_HDR:
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371 if (data_length != 8)
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374 case PNG_IO_CHUNK_DATA:
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375 break; /* no restrictions here */
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376 case PNG_IO_CHUNK_CRC:
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377 if (data_length != 4)
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381 err = 1; /* uninitialized */
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384 png_error(png_ptr, "Bad I/O state or buffer size");
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388 static void PNGCBAPI
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389 pngtest_read_data(png_structp png_ptr, png_bytep data, size_t length)
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394 /* fread() returns 0 on error, so it is OK to store this in a size_t
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395 * instead of an int, which is what fread() actually returns.
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397 io_ptr = png_get_io_ptr(png_ptr);
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398 if (io_ptr != NULL)
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400 check = fread(data, 1, length, (png_FILE_p)io_ptr);
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403 if (check != length)
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405 png_error(png_ptr, "Read Error");
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408 #ifdef PNG_IO_STATE_SUPPORTED
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409 pngtest_check_io_state(png_ptr, length, PNG_IO_READING);
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413 #ifdef PNG_WRITE_FLUSH_SUPPORTED
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414 static void PNGCBAPI
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415 pngtest_flush(png_structp png_ptr)
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417 /* Do nothing; fflush() is said to be just a waste of energy. */
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418 PNG_UNUSED(png_ptr) /* Stifle compiler warning */
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422 /* This is the function that does the actual writing of data. If you are
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423 * not writing to a standard C stream, you should create a replacement
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424 * write_data function and use it at run time with png_set_write_fn(), rather
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425 * than changing the library.
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427 static void PNGCBAPI
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428 pngtest_write_data(png_structp png_ptr, png_bytep data, size_t length)
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432 check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));
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434 if (check != length)
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436 png_error(png_ptr, "Write Error");
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439 #ifdef PNG_IO_STATE_SUPPORTED
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440 pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING);
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443 #endif /* !STDIO */
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445 /* This function is called when there is a warning, but the library thinks
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446 * it can continue anyway. Replacement functions don't have to do anything
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447 * here if you don't want to. In the default configuration, png_ptr is
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448 * not used, but it is passed in case it may be useful.
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452 const char *file_name;
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453 } pngtest_error_parameters;
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455 static void PNGCBAPI
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456 pngtest_warning(png_structp png_ptr, png_const_charp message)
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458 const char *name = "UNKNOWN (ERROR!)";
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459 pngtest_error_parameters *test =
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460 (pngtest_error_parameters*)png_get_error_ptr(png_ptr);
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464 if (test != NULL && test->file_name != NULL)
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465 name = test->file_name;
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467 fprintf(STDERR, "\n%s: libpng warning: %s\n", name, message);
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470 /* This is the default error handling function. Note that replacements for
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471 * this function MUST NOT RETURN, or the program will likely crash. This
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472 * function is used by default, or if the program supplies NULL for the
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473 * error function pointer in png_set_error_fn().
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475 static void PNGCBAPI
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476 pngtest_error(png_structp png_ptr, png_const_charp message)
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480 pngtest_warning(png_ptr, message);
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481 /* We can return because png_error calls the default handler, which is
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482 * actually OK in this case.
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486 /* END of code to validate stdio-free compilation */
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488 /* START of code to validate memory allocation and deallocation */
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489 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
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491 /* Allocate memory. For reasonable files, size should never exceed
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492 * 64K. However, zlib may allocate more than 64K if you don't tell
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493 * it not to. See zconf.h and png.h for more information. zlib does
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494 * need to allocate exactly 64K, so whatever you call here must
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495 * have the ability to do that.
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497 * This piece of code can be compiled to validate max 64K allocations
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498 * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
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500 typedef struct memory_information
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502 png_alloc_size_t size;
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504 struct memory_information *next;
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505 } memory_information;
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506 typedef memory_information *memory_infop;
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508 static memory_infop pinformation = NULL;
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509 static int current_allocation = 0;
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510 static int maximum_allocation = 0;
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511 static int total_allocation = 0;
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512 static int num_allocations = 0;
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514 png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr,
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515 png_alloc_size_t size));
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516 void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
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519 PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
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522 /* png_malloc has already tested for NULL; png_create_struct calls
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523 * png_debug_malloc directly, with png_ptr == NULL which is OK
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529 /* This calls the library allocator twice, once to get the requested
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530 buffer and once to get a new free list entry. */
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532 /* Disable malloc_fn and free_fn */
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533 memory_infop pinfo;
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534 png_set_mem_fn(png_ptr, NULL, NULL, NULL);
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535 pinfo = (memory_infop)png_malloc(png_ptr,
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537 pinfo->size = size;
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538 current_allocation += size;
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539 total_allocation += size;
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540 num_allocations ++;
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542 if (current_allocation > maximum_allocation)
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543 maximum_allocation = current_allocation;
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545 pinfo->pointer = png_malloc(png_ptr, size);
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546 /* Restore malloc_fn and free_fn */
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548 png_set_mem_fn(png_ptr,
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549 NULL, png_debug_malloc, png_debug_free);
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551 if (size != 0 && pinfo->pointer == NULL)
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553 current_allocation -= size;
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554 total_allocation -= size;
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556 "out of memory in pngtest->png_debug_malloc");
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559 pinfo->next = pinformation;
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560 pinformation = pinfo;
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561 /* Make sure the caller isn't assuming zeroed memory. */
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562 memset(pinfo->pointer, 0xdd, pinfo->size);
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565 printf("png_malloc %lu bytes at %p\n", (unsigned long)size,
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568 return (png_voidp)(pinfo->pointer);
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572 /* Free a pointer. It is removed from the list at the same time. */
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574 png_debug_free(png_structp png_ptr, png_voidp ptr)
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576 if (png_ptr == NULL)
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577 fprintf(STDERR, "NULL pointer to png_debug_free.\n");
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581 #if 0 /* This happens all the time. */
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582 fprintf(STDERR, "WARNING: freeing NULL pointer\n");
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587 /* Unlink the element from the list. */
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588 if (pinformation != NULL)
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590 memory_infop *ppinfo = &pinformation;
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594 memory_infop pinfo = *ppinfo;
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596 if (pinfo->pointer == ptr)
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598 *ppinfo = pinfo->next;
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599 current_allocation -= pinfo->size;
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600 if (current_allocation < 0)
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601 fprintf(STDERR, "Duplicate free of memory\n");
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602 /* We must free the list element too, but first kill
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603 the memory that is to be freed. */
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604 memset(ptr, 0x55, pinfo->size);
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610 if (pinfo->next == NULL)
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612 fprintf(STDERR, "Pointer %p not found\n", ptr);
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616 ppinfo = &pinfo->next;
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620 /* Finally free the data. */
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622 printf("Freeing %p\n", ptr);
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628 #endif /* USER_MEM && DEBUG */
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629 /* END of code to test memory allocation/deallocation */
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632 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
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633 /* Demonstration of user chunk support of the sTER and vpAg chunks */
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635 /* (sTER is a public chunk not yet known by libpng. vpAg is a private
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636 chunk used in ImageMagick to store "virtual page" size). */
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638 static struct user_chunk_data
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640 png_const_infop info_ptr;
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641 png_uint_32 vpAg_width, vpAg_height;
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642 png_byte vpAg_units;
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643 png_byte sTER_mode;
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648 /* Used for location and order; zero means nothing. */
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649 #define have_sTER 0x01
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650 #define have_vpAg 0x02
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651 #define before_PLTE 0x10
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652 #define before_IDAT 0x20
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653 #define after_IDAT 0x40
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656 init_callback_info(png_const_infop info_ptr)
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658 MEMZERO(user_chunk_data);
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659 user_chunk_data.info_ptr = info_ptr;
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663 set_location(png_structp png_ptr, struct user_chunk_data *data, int what)
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667 if ((data->location[0] & what) != 0 || (data->location[1] & what) != 0)
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668 return 0; /* already have one of these */
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670 /* Find where we are (the code below zeroes info_ptr to indicate that the
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671 * chunks before the first IDAT have been read.)
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673 if (data->info_ptr == NULL) /* after IDAT */
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674 location = what | after_IDAT;
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676 else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE) != 0)
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677 location = what | before_IDAT;
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680 location = what | before_PLTE;
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682 if (data->location[0] == 0)
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683 data->location[0] = location;
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686 data->location[1] = location;
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688 return 1; /* handled */
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691 static int PNGCBAPI
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692 read_user_chunk_callback(png_struct *png_ptr, png_unknown_chunkp chunk)
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694 struct user_chunk_data *my_user_chunk_data =
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695 (struct user_chunk_data*)png_get_user_chunk_ptr(png_ptr);
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697 if (my_user_chunk_data == NULL)
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698 png_error(png_ptr, "lost user chunk pointer");
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700 /* Return one of the following:
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701 * return (-n); chunk had an error
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702 * return (0); did not recognize
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703 * return (n); success
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705 * The unknown chunk structure contains the chunk data:
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706 * png_byte name[5];
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710 * Note that libpng has already taken care of the CRC handling.
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713 if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
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714 chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
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716 /* Found sTER chunk */
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717 if (chunk->size != 1)
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718 return (-1); /* Error return */
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720 if (chunk->data[0] != 0 && chunk->data[0] != 1)
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721 return (-1); /* Invalid mode */
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723 if (set_location(png_ptr, my_user_chunk_data, have_sTER) != 0)
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725 my_user_chunk_data->sTER_mode=chunk->data[0];
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730 return (0); /* duplicate sTER - give it to libpng */
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733 if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
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734 chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
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735 return (0); /* Did not recognize */
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737 /* Found ImageMagick vpAg chunk */
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739 if (chunk->size != 9)
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740 return (-1); /* Error return */
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742 if (set_location(png_ptr, my_user_chunk_data, have_vpAg) == 0)
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743 return (0); /* duplicate vpAg */
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745 my_user_chunk_data->vpAg_width = png_get_uint_31(png_ptr, chunk->data);
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746 my_user_chunk_data->vpAg_height = png_get_uint_31(png_ptr, chunk->data + 4);
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747 my_user_chunk_data->vpAg_units = chunk->data[8];
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752 #ifdef PNG_WRITE_SUPPORTED
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754 write_sTER_chunk(png_structp write_ptr)
\r
756 png_byte sTER[5] = {115, 84, 69, 82, '\0'};
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759 fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode);
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761 png_write_chunk(write_ptr, sTER, &user_chunk_data.sTER_mode, 1);
\r
765 write_vpAg_chunk(png_structp write_ptr)
\r
767 png_byte vpAg[5] = {118, 112, 65, 103, '\0'};
\r
769 png_byte vpag_chunk_data[9];
\r
772 fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n",
\r
773 (unsigned long)user_chunk_data.vpAg_width,
\r
774 (unsigned long)user_chunk_data.vpAg_height,
\r
775 user_chunk_data.vpAg_units);
\r
777 png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width);
\r
778 png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height);
\r
779 vpag_chunk_data[8] = user_chunk_data.vpAg_units;
\r
780 png_write_chunk(write_ptr, vpAg, vpag_chunk_data, 9);
\r
784 write_chunks(png_structp write_ptr, int location)
\r
788 /* Notice that this preserves the original chunk order, however chunks
\r
789 * intercepted by the callback will be written *after* chunks passed to
\r
790 * libpng. This will actually reverse a pair of sTER chunks or a pair of
\r
791 * vpAg chunks, resulting in an error later. This is not worth worrying
\r
792 * about - the chunks should not be duplicated!
\r
794 for (i=0; i<2; ++i)
\r
796 if (user_chunk_data.location[i] == (location | have_sTER))
\r
797 write_sTER_chunk(write_ptr);
\r
799 else if (user_chunk_data.location[i] == (location | have_vpAg))
\r
800 write_vpAg_chunk(write_ptr);
\r
804 #else /* !READ_USER_CHUNKS */
\r
805 # define write_chunks(pp,loc) ((void)0)
\r
807 /* END of code to demonstrate user chunk support */
\r
809 /* START of code to check that libpng has the required text support; this only
\r
810 * checks for the write support because if read support is missing the chunk
\r
811 * will simply not be reported back to pngtest.
\r
813 #ifdef PNG_TEXT_SUPPORTED
\r
815 pngtest_check_text_support(png_structp png_ptr, png_textp text_ptr,
\r
818 while (num_text > 0)
\r
820 switch (text_ptr[--num_text].compression)
\r
822 case PNG_TEXT_COMPRESSION_NONE:
\r
825 case PNG_TEXT_COMPRESSION_zTXt:
\r
826 # ifndef PNG_WRITE_zTXt_SUPPORTED
\r
827 ++unsupported_chunks;
\r
828 /* In libpng 1.7 this now does an app-error, so stop it: */
\r
829 text_ptr[num_text].compression = PNG_TEXT_COMPRESSION_NONE;
\r
833 case PNG_ITXT_COMPRESSION_NONE:
\r
834 case PNG_ITXT_COMPRESSION_zTXt:
\r
835 # ifndef PNG_WRITE_iTXt_SUPPORTED
\r
836 ++unsupported_chunks;
\r
837 text_ptr[num_text].compression = PNG_TEXT_COMPRESSION_NONE;
\r
842 /* This is an error */
\r
843 png_error(png_ptr, "invalid text chunk compression field");
\r
849 /* END of code to check that libpng has the required text support */
\r
851 /* Test one file */
\r
853 test_one_file(const char *inname, const char *outname)
\r
855 static png_FILE_p fpin;
\r
856 static png_FILE_p fpout; /* "static" prevents setjmp corruption */
\r
857 pngtest_error_parameters error_parameters;
\r
858 png_structp read_ptr;
\r
859 png_infop read_info_ptr, end_info_ptr;
\r
860 #ifdef PNG_WRITE_SUPPORTED
\r
861 png_structp write_ptr;
\r
862 png_infop write_info_ptr;
\r
863 png_infop write_end_info_ptr;
\r
864 #ifdef PNG_WRITE_FILTER_SUPPORTED
\r
865 int interlace_preserved = 1;
\r
866 #endif /* WRITE_FILTER */
\r
868 png_structp write_ptr = NULL;
\r
869 png_infop write_info_ptr = NULL;
\r
870 png_infop write_end_info_ptr = NULL;
\r
871 #endif /* !WRITE */
\r
874 png_uint_32 width, height;
\r
875 volatile int num_passes;
\r
877 int bit_depth, color_type;
\r
880 error_parameters.file_name = inname;
\r
882 if ((fpin = fopen(inname, "rb")) == NULL)
\r
884 fprintf(STDERR, "Could not find input file %s\n", inname);
\r
888 if ((fpout = fopen(outname, "wb")) == NULL)
\r
890 fprintf(STDERR, "Could not open output file %s\n", outname);
\r
895 pngtest_debug("Allocating read and write structures");
\r
896 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
\r
898 png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
\r
899 NULL, NULL, NULL, png_debug_malloc, png_debug_free);
\r
902 png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
\r
904 png_set_error_fn(read_ptr, &error_parameters, pngtest_error,
\r
907 #ifdef PNG_WRITE_SUPPORTED
\r
908 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
\r
910 png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
\r
911 NULL, NULL, NULL, png_debug_malloc, png_debug_free);
\r
914 png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
\r
916 png_set_error_fn(write_ptr, &error_parameters, pngtest_error,
\r
919 pngtest_debug("Allocating read_info, write_info and end_info structures");
\r
920 read_info_ptr = png_create_info_struct(read_ptr);
\r
921 end_info_ptr = png_create_info_struct(read_ptr);
\r
922 #ifdef PNG_WRITE_SUPPORTED
\r
923 write_info_ptr = png_create_info_struct(write_ptr);
\r
924 write_end_info_ptr = png_create_info_struct(write_ptr);
\r
927 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
\r
928 init_callback_info(read_info_ptr);
\r
929 png_set_read_user_chunk_fn(read_ptr, &user_chunk_data,
\r
930 read_user_chunk_callback);
\r
933 #ifdef PNG_SETJMP_SUPPORTED
\r
934 pngtest_debug("Setting jmpbuf for read struct");
\r
935 if (setjmp(png_jmpbuf(read_ptr)))
\r
937 fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
\r
938 png_free(read_ptr, row_buf);
\r
941 fprintf(STDERR, " destroy read structs\n");
\r
942 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
\r
943 #ifdef PNG_WRITE_SUPPORTED
\r
945 fprintf(STDERR, " destroy write structs\n");
\r
946 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
\r
947 png_destroy_write_struct(&write_ptr, &write_info_ptr);
\r
954 #ifdef PNG_WRITE_SUPPORTED
\r
955 pngtest_debug("Setting jmpbuf for write struct");
\r
957 if (setjmp(png_jmpbuf(write_ptr)))
\r
959 fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
\r
960 png_free(read_ptr, row_buf);
\r
963 fprintf(STDERR, " destroying read structs\n");
\r
964 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
\r
966 fprintf(STDERR, " destroying write structs\n");
\r
967 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
\r
968 png_destroy_write_struct(&write_ptr, &write_info_ptr);
\r
976 #ifdef PNG_BENIGN_ERRORS_SUPPORTED
\r
979 /* Treat png_benign_error() as errors on read */
\r
980 png_set_benign_errors(read_ptr, 0);
\r
982 # ifdef PNG_WRITE_SUPPORTED
\r
983 /* Treat them as errors on write */
\r
984 png_set_benign_errors(write_ptr, 0);
\r
987 /* if strict is not set, then app warnings and errors are treated as
\r
988 * warnings in release builds, but not in unstable builds; this can be
\r
989 * changed with '--relaxed'.
\r
993 else if (relaxed != 0)
\r
995 /* Allow application (pngtest) errors and warnings to pass */
\r
996 png_set_benign_errors(read_ptr, 1);
\r
998 /* Turn off CRC checking while reading */
\r
999 png_set_crc_action(read_ptr, PNG_CRC_QUIET_USE, PNG_CRC_QUIET_USE);
\r
1001 #ifdef PNG_IGNORE_ADLER32
\r
1002 /* Turn off ADLER32 checking while reading */
\r
1003 png_set_option(read_ptr, PNG_IGNORE_ADLER32, PNG_OPTION_ON);
\r
1006 # ifdef PNG_WRITE_SUPPORTED
\r
1007 png_set_benign_errors(write_ptr, 1);
\r
1011 #endif /* BENIGN_ERRORS */
\r
1013 pngtest_debug("Initializing input and output streams");
\r
1014 #ifdef PNG_STDIO_SUPPORTED
\r
1015 png_init_io(read_ptr, fpin);
\r
1016 # ifdef PNG_WRITE_SUPPORTED
\r
1017 png_init_io(write_ptr, fpout);
\r
1020 png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
\r
1021 # ifdef PNG_WRITE_SUPPORTED
\r
1022 png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
\r
1023 # ifdef PNG_WRITE_FLUSH_SUPPORTED
\r
1031 if (status_dots_requested == 1)
\r
1033 #ifdef PNG_WRITE_SUPPORTED
\r
1034 png_set_write_status_fn(write_ptr, write_row_callback);
\r
1036 png_set_read_status_fn(read_ptr, read_row_callback);
\r
1041 #ifdef PNG_WRITE_SUPPORTED
\r
1042 png_set_write_status_fn(write_ptr, NULL);
\r
1044 png_set_read_status_fn(read_ptr, NULL);
\r
1047 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
\r
1048 png_set_read_user_transform_fn(read_ptr, read_user_callback);
\r
1050 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
\r
1052 png_set_write_user_transform_fn(write_ptr, count_zero_samples);
\r
1055 #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
\r
1056 /* Preserve all the unknown chunks, if possible. If this is disabled then,
\r
1057 * even if the png_{get,set}_unknown_chunks stuff is enabled, we can't use
\r
1058 * libpng to *save* the unknown chunks on read (because we can't switch the
\r
1059 * save option on!)
\r
1061 * Notice that if SET_UNKNOWN_CHUNKS is *not* supported read will discard all
\r
1062 * unknown chunks and write will write them all.
\r
1064 #ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
\r
1065 png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
\r
1068 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
\r
1069 png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS,
\r
1074 pngtest_debug("Reading info struct");
\r
1075 png_read_info(read_ptr, read_info_ptr);
\r
1077 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
\r
1078 /* This is a bit of a hack; there is no obvious way in the callback function
\r
1079 * to determine that the chunks before the first IDAT have been read, so
\r
1080 * remove the info_ptr (which is only used to determine position relative to
\r
1081 * PLTE) here to indicate that we are after the IDAT.
\r
1083 user_chunk_data.info_ptr = NULL;
\r
1086 pngtest_debug("Transferring info struct");
\r
1088 int interlace_type, compression_type, filter_type;
\r
1090 if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
\r
1091 &color_type, &interlace_type, &compression_type, &filter_type) != 0)
\r
1093 png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
\r
1094 color_type, interlace_type, compression_type, filter_type);
\r
1095 /* num_passes may not be available below if interlace support is not
\r
1096 * provided by libpng for both read and write.
\r
1098 switch (interlace_type)
\r
1100 case PNG_INTERLACE_NONE:
\r
1104 case PNG_INTERLACE_ADAM7:
\r
1109 png_error(read_ptr, "invalid interlace type");
\r
1115 png_error(read_ptr, "png_get_IHDR failed");
\r
1117 #ifdef PNG_FIXED_POINT_SUPPORTED
\r
1118 #ifdef PNG_cHRM_SUPPORTED
\r
1120 png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
\r
1123 if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
\r
1124 &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0)
\r
1126 png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
\r
1127 red_y, green_x, green_y, blue_x, blue_y);
\r
1131 #ifdef PNG_gAMA_SUPPORTED
\r
1133 png_fixed_point gamma;
\r
1135 if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma) != 0)
\r
1136 png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
\r
1139 #else /* Use floating point versions */
\r
1140 #ifdef PNG_FLOATING_POINT_SUPPORTED
\r
1141 #ifdef PNG_cHRM_SUPPORTED
\r
1143 double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
\r
1146 if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
\r
1147 &red_y, &green_x, &green_y, &blue_x, &blue_y) != 0)
\r
1149 png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
\r
1150 red_y, green_x, green_y, blue_x, blue_y);
\r
1154 #ifdef PNG_gAMA_SUPPORTED
\r
1158 if (png_get_gAMA(read_ptr, read_info_ptr, &gamma) != 0)
\r
1159 png_set_gAMA(write_ptr, write_info_ptr, gamma);
\r
1162 #endif /* Floating point */
\r
1163 #endif /* Fixed point */
\r
1164 #ifdef PNG_iCCP_SUPPORTED
\r
1167 png_bytep profile;
\r
1168 png_uint_32 proflen;
\r
1169 int compression_type;
\r
1171 if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
\r
1172 &profile, &proflen) != 0)
\r
1174 png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
\r
1175 profile, proflen);
\r
1179 #ifdef PNG_sRGB_SUPPORTED
\r
1183 if (png_get_sRGB(read_ptr, read_info_ptr, &intent) != 0)
\r
1184 png_set_sRGB(write_ptr, write_info_ptr, intent);
\r
1188 png_colorp palette;
\r
1191 if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette) != 0)
\r
1192 png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
\r
1194 #ifdef PNG_bKGD_SUPPORTED
\r
1196 png_color_16p background;
\r
1198 if (png_get_bKGD(read_ptr, read_info_ptr, &background) != 0)
\r
1200 png_set_bKGD(write_ptr, write_info_ptr, background);
\r
1204 #ifdef PNG_READ_eXIf_SUPPORTED
\r
1206 png_bytep exif=NULL;
\r
1207 png_uint_32 exif_length;
\r
1209 if (png_get_eXIf_1(read_ptr, read_info_ptr, &exif_length, &exif) != 0)
\r
1211 if (exif_length > 1)
\r
1212 fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1],
\r
1213 (unsigned long)exif_length);
\r
1214 # ifdef PNG_WRITE_eXIf_SUPPORTED
\r
1215 png_set_eXIf_1(write_ptr, write_info_ptr, exif_length, exif);
\r
1220 #ifdef PNG_hIST_SUPPORTED
\r
1222 png_uint_16p hist;
\r
1224 if (png_get_hIST(read_ptr, read_info_ptr, &hist) != 0)
\r
1225 png_set_hIST(write_ptr, write_info_ptr, hist);
\r
1228 #ifdef PNG_oFFs_SUPPORTED
\r
1230 png_int_32 offset_x, offset_y;
\r
1233 if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
\r
1236 png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
\r
1240 #ifdef PNG_pCAL_SUPPORTED
\r
1242 png_charp purpose, units;
\r
1243 png_charpp params;
\r
1244 png_int_32 X0, X1;
\r
1245 int type, nparams;
\r
1247 if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
\r
1248 &nparams, &units, ¶ms) != 0)
\r
1250 png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
\r
1251 nparams, units, params);
\r
1255 #ifdef PNG_pHYs_SUPPORTED
\r
1257 png_uint_32 res_x, res_y;
\r
1260 if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y,
\r
1262 png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
\r
1265 #ifdef PNG_sBIT_SUPPORTED
\r
1267 png_color_8p sig_bit;
\r
1269 if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit) != 0)
\r
1270 png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
\r
1273 #ifdef PNG_sCAL_SUPPORTED
\r
1274 #if defined(PNG_FLOATING_POINT_SUPPORTED) && \
\r
1275 defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
\r
1278 double scal_width, scal_height;
\r
1280 if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
\r
1281 &scal_height) != 0)
\r
1283 png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
\r
1287 #ifdef PNG_FIXED_POINT_SUPPORTED
\r
1290 png_charp scal_width, scal_height;
\r
1292 if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
\r
1293 &scal_height) != 0)
\r
1295 png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
\r
1303 #ifdef PNG_sPLT_SUPPORTED
\r
1305 png_sPLT_tp entries;
\r
1307 int num_entries = (int) png_get_sPLT(read_ptr, read_info_ptr, &entries);
\r
1310 png_set_sPLT(write_ptr, write_info_ptr, entries, num_entries);
\r
1315 #ifdef PNG_TEXT_SUPPORTED
\r
1317 png_textp text_ptr;
\r
1320 if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
\r
1322 pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
\r
1324 pngtest_check_text_support(read_ptr, text_ptr, num_text);
\r
1330 fprintf(STDERR,"\n");
\r
1331 for (i=0; i<num_text; i++)
\r
1333 fprintf(STDERR," Text compression[%d]=%d\n",
\r
1334 i, text_ptr[i].compression);
\r
1338 png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
\r
1342 #ifdef PNG_tIME_SUPPORTED
\r
1344 png_timep mod_time;
\r
1346 if (png_get_tIME(read_ptr, read_info_ptr, &mod_time) != 0)
\r
1348 png_set_tIME(write_ptr, write_info_ptr, mod_time);
\r
1349 #ifdef PNG_TIME_RFC1123_SUPPORTED
\r
1350 if (png_convert_to_rfc1123_buffer(tIME_string, mod_time) != 0)
\r
1351 tIME_string[(sizeof tIME_string) - 1] = '\0';
\r
1355 strncpy(tIME_string, "*** invalid time ***", (sizeof tIME_string));
\r
1356 tIME_string[(sizeof tIME_string) - 1] = '\0';
\r
1359 tIME_chunk_present++;
\r
1360 #endif /* TIME_RFC1123 */
\r
1364 #ifdef PNG_tRNS_SUPPORTED
\r
1366 png_bytep trans_alpha;
\r
1368 png_color_16p trans_color;
\r
1370 if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
\r
1371 &trans_color) != 0)
\r
1373 int sample_max = (1 << bit_depth);
\r
1374 /* libpng doesn't reject a tRNS chunk with out-of-range samples */
\r
1375 if (!((color_type == PNG_COLOR_TYPE_GRAY &&
\r
1376 (int)trans_color->gray > sample_max) ||
\r
1377 (color_type == PNG_COLOR_TYPE_RGB &&
\r
1378 ((int)trans_color->red > sample_max ||
\r
1379 (int)trans_color->green > sample_max ||
\r
1380 (int)trans_color->blue > sample_max))))
\r
1381 png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
\r
1386 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
\r
1388 png_unknown_chunkp unknowns;
\r
1389 int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr,
\r
1392 if (num_unknowns != 0)
\r
1394 png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
\r
1396 #if PNG_LIBPNG_VER < 10600
\r
1397 /* Copy the locations from the read_info_ptr. The automatically
\r
1398 * generated locations in write_end_info_ptr are wrong prior to 1.6.0
\r
1399 * because they are reset from the write pointer (removed in 1.6.0).
\r
1403 for (i = 0; i < num_unknowns; i++)
\r
1404 png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
\r
1405 unknowns[i].location);
\r
1412 #ifdef PNG_WRITE_SUPPORTED
\r
1413 pngtest_debug("Writing info struct");
\r
1415 /* Write the info in two steps so that if we write the 'unknown' chunks here
\r
1416 * they go to the correct place.
\r
1418 png_write_info_before_PLTE(write_ptr, write_info_ptr);
\r
1420 write_chunks(write_ptr, before_PLTE); /* before PLTE */
\r
1422 png_write_info(write_ptr, write_info_ptr);
\r
1424 write_chunks(write_ptr, before_IDAT); /* after PLTE */
\r
1426 png_write_info(write_ptr, write_end_info_ptr);
\r
1428 write_chunks(write_ptr, after_IDAT); /* after IDAT */
\r
1430 #ifdef PNG_COMPRESSION_COMPAT
\r
1431 /* Test the 'compatibility' setting here, if it is available. */
\r
1432 png_set_compression(write_ptr, PNG_COMPRESSION_COMPAT);
\r
1436 #ifdef SINGLE_ROWBUF_ALLOC
\r
1437 pngtest_debug("Allocating row buffer...");
\r
1438 row_buf = (png_bytep)png_malloc(read_ptr,
\r
1439 png_get_rowbytes(read_ptr, read_info_ptr));
\r
1441 pngtest_debug1("\t%p", row_buf);
\r
1442 #endif /* SINGLE_ROWBUF_ALLOC */
\r
1443 pngtest_debug("Writing row data");
\r
1445 #if defined(PNG_READ_INTERLACING_SUPPORTED) &&\
\r
1446 defined(PNG_WRITE_INTERLACING_SUPPORTED)
\r
1447 /* Both must be defined for libpng to be able to handle the interlace,
\r
1448 * otherwise it gets handled below by simply reading and writing the passes
\r
1451 if (png_set_interlace_handling(read_ptr) != num_passes)
\r
1452 png_error(write_ptr,
\r
1453 "png_set_interlace_handling(read): wrong pass count ");
\r
1454 if (png_set_interlace_handling(write_ptr) != num_passes)
\r
1455 png_error(write_ptr,
\r
1456 "png_set_interlace_handling(write): wrong pass count ");
\r
1457 #else /* png_set_interlace_handling not called on either read or write */
\r
1458 # define calc_pass_height
\r
1459 #endif /* not using libpng interlace handling */
\r
1461 #ifdef PNGTEST_TIMING
\r
1462 t_stop = (float)clock();
\r
1463 t_misc += (t_stop - t_start);
\r
1466 for (pass = 0; pass < num_passes; pass++)
\r
1468 # ifdef calc_pass_height
\r
1469 png_uint_32 pass_height;
\r
1471 if (num_passes == 7) /* interlaced */
\r
1473 if (PNG_PASS_COLS(width, pass) > 0)
\r
1474 pass_height = PNG_PASS_ROWS(height, pass);
\r
1480 else /* not interlaced */
\r
1481 pass_height = height;
\r
1483 # define pass_height height
\r
1486 pngtest_debug1("Writing row data for pass %d", pass);
\r
1487 for (y = 0; y < pass_height; y++)
\r
1489 #ifndef SINGLE_ROWBUF_ALLOC
\r
1490 pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
\r
1492 row_buf = (png_bytep)png_malloc(read_ptr,
\r
1493 png_get_rowbytes(read_ptr, read_info_ptr));
\r
1495 pngtest_debug2("\t%p (%lu bytes)", row_buf,
\r
1496 (unsigned long)png_get_rowbytes(read_ptr, read_info_ptr));
\r
1498 #endif /* !SINGLE_ROWBUF_ALLOC */
\r
1499 png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
\r
1501 #ifdef PNG_WRITE_SUPPORTED
\r
1502 #ifdef PNGTEST_TIMING
\r
1503 t_stop = (float)clock();
\r
1504 t_decode += (t_stop - t_start);
\r
1507 png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
\r
1508 #ifdef PNGTEST_TIMING
\r
1509 t_stop = (float)clock();
\r
1510 t_encode += (t_stop - t_start);
\r
1513 #endif /* WRITE */
\r
1515 #ifndef SINGLE_ROWBUF_ALLOC
\r
1516 pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);
\r
1517 png_free(read_ptr, row_buf);
\r
1519 #endif /* !SINGLE_ROWBUF_ALLOC */
\r
1523 #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
\r
1524 # ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
\r
1525 png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
\r
1527 # ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
\r
1528 png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
\r
1532 pngtest_debug("Reading and writing end_info data");
\r
1534 png_read_end(read_ptr, end_info_ptr);
\r
1535 #ifdef PNG_TEXT_SUPPORTED
\r
1537 png_textp text_ptr;
\r
1540 if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
\r
1542 pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
\r
1544 pngtest_check_text_support(read_ptr, text_ptr, num_text);
\r
1550 fprintf(STDERR,"\n");
\r
1551 for (i=0; i<num_text; i++)
\r
1553 fprintf(STDERR," Text compression[%d]=%d\n",
\r
1554 i, text_ptr[i].compression);
\r
1558 png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
\r
1562 #ifdef PNG_READ_eXIf_SUPPORTED
\r
1564 png_bytep exif=NULL;
\r
1565 png_uint_32 exif_length;
\r
1567 if (png_get_eXIf_1(read_ptr, end_info_ptr, &exif_length, &exif) != 0)
\r
1569 if (exif_length > 1)
\r
1570 fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1],
\r
1571 (unsigned long)exif_length);
\r
1572 # ifdef PNG_WRITE_eXIf_SUPPORTED
\r
1573 png_set_eXIf_1(write_ptr, write_end_info_ptr, exif_length, exif);
\r
1578 #ifdef PNG_tIME_SUPPORTED
\r
1580 png_timep mod_time;
\r
1582 if (png_get_tIME(read_ptr, end_info_ptr, &mod_time) != 0)
\r
1584 png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
\r
1585 #ifdef PNG_TIME_RFC1123_SUPPORTED
\r
1586 if (png_convert_to_rfc1123_buffer(tIME_string, mod_time) != 0)
\r
1587 tIME_string[(sizeof tIME_string) - 1] = '\0';
\r
1591 strncpy(tIME_string, "*** invalid time ***", sizeof tIME_string);
\r
1592 tIME_string[(sizeof tIME_string)-1] = '\0';
\r
1595 tIME_chunk_present++;
\r
1596 #endif /* TIME_RFC1123 */
\r
1600 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
\r
1602 png_unknown_chunkp unknowns;
\r
1603 int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr,
\r
1606 if (num_unknowns != 0)
\r
1608 png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
\r
1610 #if PNG_LIBPNG_VER < 10600
\r
1611 /* Copy the locations from the read_info_ptr. The automatically
\r
1612 * generated locations in write_end_info_ptr are wrong prior to 1.6.0
\r
1613 * because they are reset from the write pointer (removed in 1.6.0).
\r
1617 for (i = 0; i < num_unknowns; i++)
\r
1618 png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
\r
1619 unknowns[i].location);
\r
1626 #ifdef PNG_WRITE_SUPPORTED
\r
1627 #ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
\r
1628 /* Normally one would use Z_DEFAULT_STRATEGY for text compression.
\r
1629 * This is here just to make pngtest replicate the results from libpng
\r
1630 * versions prior to 1.5.4, and to test this new API.
\r
1632 png_set_text_compression_strategy(write_ptr, Z_FILTERED);
\r
1635 /* When the unknown vpAg/sTER chunks are written by pngtest the only way to
\r
1636 * do it is to write them *before* calling png_write_end. When unknown
\r
1637 * chunks are written by libpng, however, they are written just before IEND.
\r
1638 * There seems to be no way round this, however vpAg/sTER are not expected
\r
1641 write_chunks(write_ptr, after_IDAT);
\r
1643 png_write_end(write_ptr, write_end_info_ptr);
\r
1646 #ifdef PNG_EASY_ACCESS_SUPPORTED
\r
1649 png_uint_32 iwidth, iheight;
\r
1650 iwidth = png_get_image_width(write_ptr, write_info_ptr);
\r
1651 iheight = png_get_image_height(write_ptr, write_info_ptr);
\r
1652 fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
\r
1653 (unsigned long)iwidth, (unsigned long)iheight);
\r
1657 pngtest_debug("Destroying data structs");
\r
1658 #ifdef SINGLE_ROWBUF_ALLOC
\r
1659 pngtest_debug("destroying row_buf for read_ptr");
\r
1660 png_free(read_ptr, row_buf);
\r
1662 #endif /* SINGLE_ROWBUF_ALLOC */
\r
1663 pngtest_debug("destroying read_ptr, read_info_ptr, end_info_ptr");
\r
1664 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
\r
1665 #ifdef PNG_WRITE_SUPPORTED
\r
1666 pngtest_debug("destroying write_end_info_ptr");
\r
1667 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
\r
1668 pngtest_debug("destroying write_ptr, write_info_ptr");
\r
1669 png_destroy_write_struct(&write_ptr, &write_info_ptr);
\r
1671 pngtest_debug("Destruction complete.");
\r
1676 /* Summarize any warnings or errors and in 'strict' mode fail the test.
\r
1677 * Unsupported chunks can result in warnings, in that case ignore the strict
\r
1678 * setting, otherwise fail the test on warnings as well as errors.
\r
1680 if (error_count > 0)
\r
1682 /* We don't really expect to get here because of the setjmp handling
\r
1683 * above, but this is safe.
\r
1685 fprintf(STDERR, "\n %s: %d libpng errors found (%d warnings)",
\r
1686 inname, error_count, warning_count);
\r
1692 # ifdef PNG_WRITE_SUPPORTED
\r
1693 /* If there is no write support nothing was written! */
\r
1694 else if (unsupported_chunks > 0)
\r
1696 fprintf(STDERR, "\n %s: unsupported chunks (%d)%s",
\r
1697 inname, unsupported_chunks, strict ? ": IGNORED --strict!" : "");
\r
1701 else if (warning_count > 0)
\r
1703 fprintf(STDERR, "\n %s: %d libpng warnings found",
\r
1704 inname, warning_count);
\r
1710 pngtest_debug("Opening files for comparison");
\r
1711 if ((fpin = fopen(inname, "rb")) == NULL)
\r
1713 fprintf(STDERR, "Could not find file %s\n", inname);
\r
1717 if ((fpout = fopen(outname, "rb")) == NULL)
\r
1719 fprintf(STDERR, "Could not find file %s\n", outname);
\r
1724 #if defined (PNG_WRITE_SUPPORTED) /* else nothing was written */ &&\
\r
1725 defined (PNG_WRITE_FILTER_SUPPORTED)
\r
1726 if (interlace_preserved != 0) /* else the files will be changed */
\r
1730 static int wrote_question = 0;
\r
1731 size_t num_in, num_out;
\r
1732 char inbuf[256], outbuf[256];
\r
1734 num_in = fread(inbuf, 1, sizeof inbuf, fpin);
\r
1735 num_out = fread(outbuf, 1, sizeof outbuf, fpout);
\r
1737 if (num_in != num_out)
\r
1739 fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
\r
1742 if (wrote_question == 0 && unsupported_chunks == 0)
\r
1745 " Was %s written with the same maximum IDAT"
\r
1746 " chunk size (%d bytes),",
\r
1747 inname, PNG_ZBUF_SIZE);
\r
1749 "\n filtering heuristic (libpng default), compression");
\r
1751 " level (zlib default),\n and zlib version (%s)?\n\n",
\r
1753 wrote_question = 1;
\r
1759 if (strict != 0 && unsupported_chunks == 0)
\r
1769 if (memcmp(inbuf, outbuf, num_in))
\r
1771 fprintf(STDERR, "\nFiles %s and %s are different\n", inname,
\r
1774 if (wrote_question == 0 && unsupported_chunks == 0)
\r
1777 " Was %s written with the same maximum"
\r
1778 " IDAT chunk size (%d bytes),",
\r
1779 inname, PNG_ZBUF_SIZE);
\r
1781 "\n filtering heuristic (libpng default), compression");
\r
1783 " level (zlib default),\n and zlib version (%s)?\n\n",
\r
1785 wrote_question = 1;
\r
1791 /* NOTE: the unsupported_chunks escape is permitted here because
\r
1792 * unsupported text chunk compression will result in the compression
\r
1793 * mode being changed (to NONE) yet, in the test case, the result
\r
1794 * can be exactly the same size!
\r
1796 if (strict != 0 && unsupported_chunks == 0)
\r
1804 #endif /* WRITE && WRITE_FILTER */
\r
1812 /* Input and output filenames */
\r
1814 static const char *inname = "pngtest/png";
\r
1815 static const char *outname = "pngout/png";
\r
1817 static const char *inname = "pngtest.png";
\r
1818 static const char *outname = "pngout.png";
\r
1822 main(int argc, char *argv[])
\r
1827 png_structp dummy_ptr;
\r
1829 fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
\r
1830 fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
\r
1831 fprintf(STDERR, "%s", png_get_copyright(NULL));
\r
1832 /* Show the version of libpng used in building the library */
\r
1833 fprintf(STDERR, " library (%lu):%s",
\r
1834 (unsigned long)png_access_version_number(),
\r
1835 png_get_header_version(NULL));
\r
1837 /* Show the version of libpng used in building the application */
\r
1838 fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
\r
1839 PNG_HEADER_VERSION_STRING);
\r
1841 /* Do some consistency checking on the memory allocation settings, I'm
\r
1842 * not sure this matters, but it is nice to know, the first of these
\r
1843 * tests should be impossible because of the way the macros are set
\r
1846 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
\r
1847 fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
\r
1849 /* I think the following can happen. */
\r
1850 #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
\r
1851 fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
\r
1854 if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
\r
1857 "Warning: versions are different between png.h and png.c\n");
\r
1858 fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
\r
1859 fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
\r
1865 if (strcmp(argv[1], "-m") == 0)
\r
1868 status_dots_requested = 0;
\r
1871 else if (strcmp(argv[1], "-mv") == 0 ||
\r
1872 strcmp(argv[1], "-vm") == 0 )
\r
1876 status_dots_requested = 1;
\r
1879 else if (strcmp(argv[1], "-v") == 0)
\r
1882 status_dots_requested = 1;
\r
1886 else if (strcmp(argv[1], "--strict") == 0)
\r
1888 status_dots_requested = 0;
\r
1896 else if (strcmp(argv[1], "--relaxed") == 0)
\r
1898 status_dots_requested = 0;
\r
1905 else if (strcmp(argv[1], "--xfail") == 0)
\r
1907 status_dots_requested = 0;
\r
1919 status_dots_requested = 0;
\r
1923 if (multiple == 0 && argc == 3 + verbose)
\r
1924 outname = argv[2 + verbose];
\r
1926 if ((multiple == 0 && argc > 3 + verbose) ||
\r
1927 (multiple != 0 && argc < 2))
\r
1930 "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
\r
1931 argv[0], argv[0]);
\r
1933 " reads/writes one PNG file (without -m) or multiple files (-m)\n");
\r
1935 " with -m %s is used as a temporary file\n", outname);
\r
1939 if (multiple != 0)
\r
1942 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
\r
1943 int allocation_now = current_allocation;
\r
1945 for (i=2; i<argc; ++i)
\r
1948 fprintf(STDERR, "\n Testing %s:", argv[i]);
\r
1950 fprintf(STDERR, "\n");
\r
1952 kerror = test_one_file(argv[i], outname);
\r
1955 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
\r
1956 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
\r
1957 (unsigned long)zero_samples);
\r
1959 fprintf(STDERR, " PASS\n");
\r
1961 #ifdef PNG_TIME_RFC1123_SUPPORTED
\r
1962 if (tIME_chunk_present != 0)
\r
1963 fprintf(STDERR, " tIME = %s\n", tIME_string);
\r
1965 tIME_chunk_present = 0;
\r
1966 #endif /* TIME_RFC1123 */
\r
1972 fprintf(STDERR, " XFAIL\n");
\r
1975 fprintf(STDERR, " FAIL\n");
\r
1979 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
\r
1980 if (allocation_now != current_allocation)
\r
1981 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
\r
1982 current_allocation - allocation_now);
\r
1984 if (current_allocation != 0)
\r
1986 memory_infop pinfo = pinformation;
\r
1988 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
\r
1989 current_allocation);
\r
1991 while (pinfo != NULL)
\r
1993 fprintf(STDERR, " %lu bytes at %p\n",
\r
1994 (unsigned long)pinfo->size,
\r
1996 pinfo = pinfo->next;
\r
2001 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
\r
2002 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
\r
2003 current_allocation);
\r
2004 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
\r
2005 maximum_allocation);
\r
2006 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
\r
2007 total_allocation);
\r
2008 fprintf(STDERR, " Number of allocations: %10d\n",
\r
2016 for (i = 0; i<3; ++i)
\r
2019 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
\r
2020 int allocation_now = current_allocation;
\r
2023 status_dots_requested = 1;
\r
2025 else if (verbose == 0)
\r
2026 status_dots_requested = 0;
\r
2028 if (i == 0 || verbose == 1 || ierror != 0)
\r
2030 fprintf(STDERR, "\n Testing %s:", inname);
\r
2032 fprintf(STDERR, "\n");
\r
2036 kerror = test_one_file(inname, outname);
\r
2040 if (verbose == 1 || i == 2)
\r
2042 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
\r
2043 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
\r
2044 (unsigned long)zero_samples);
\r
2046 fprintf(STDERR, " PASS\n");
\r
2048 #ifdef PNG_TIME_RFC1123_SUPPORTED
\r
2049 if (tIME_chunk_present != 0)
\r
2050 fprintf(STDERR, " tIME = %s\n", tIME_string);
\r
2051 #endif /* TIME_RFC1123 */
\r
2057 if (verbose == 0 && i != 2)
\r
2059 fprintf(STDERR, "\n Testing %s:", inname);
\r
2061 fprintf(STDERR, "\n");
\r
2066 fprintf(STDERR, " XFAIL\n");
\r
2069 fprintf(STDERR, " FAIL\n");
\r
2073 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
\r
2074 if (allocation_now != current_allocation)
\r
2075 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
\r
2076 current_allocation - allocation_now);
\r
2078 if (current_allocation != 0)
\r
2080 memory_infop pinfo = pinformation;
\r
2082 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
\r
2083 current_allocation);
\r
2085 while (pinfo != NULL)
\r
2087 fprintf(STDERR, " %lu bytes at %p\n",
\r
2088 (unsigned long)pinfo->size, pinfo->pointer);
\r
2089 pinfo = pinfo->next;
\r
2094 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
\r
2095 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
\r
2096 current_allocation);
\r
2097 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
\r
2098 maximum_allocation);
\r
2099 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
\r
2100 total_allocation);
\r
2101 fprintf(STDERR, " Number of allocations: %10d\n",
\r
2106 #ifdef PNGTEST_TIMING
\r
2107 t_stop = (float)clock();
\r
2108 t_misc += (t_stop - t_start);
\r
2110 fprintf(STDERR, " CPU time used = %.3f seconds",
\r
2111 (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
\r
2112 fprintf(STDERR, " (decoding %.3f,\n",
\r
2113 t_decode/(float)CLOCKS_PER_SEC);
\r
2114 fprintf(STDERR, " encoding %.3f ,",
\r
2115 t_encode/(float)CLOCKS_PER_SEC);
\r
2116 fprintf(STDERR, " other %.3f seconds)\n\n",
\r
2117 t_misc/(float)CLOCKS_PER_SEC);
\r
2121 fprintf(STDERR, " libpng passes test\n");
\r
2124 fprintf(STDERR, " libpng FAILS test\n");
\r
2126 dummy_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
\r
2127 fprintf(STDERR, " Default limits:\n");
\r
2128 fprintf(STDERR, " width_max = %lu\n",
\r
2129 (unsigned long) png_get_user_width_max(dummy_ptr));
\r
2130 fprintf(STDERR, " height_max = %lu\n",
\r
2131 (unsigned long) png_get_user_height_max(dummy_ptr));
\r
2132 if (png_get_chunk_cache_max(dummy_ptr) == 0)
\r
2133 fprintf(STDERR, " cache_max = unlimited\n");
\r
2135 fprintf(STDERR, " cache_max = %lu\n",
\r
2136 (unsigned long) png_get_chunk_cache_max(dummy_ptr));
\r
2137 if (png_get_chunk_malloc_max(dummy_ptr) == 0)
\r
2138 fprintf(STDERR, " malloc_max = unlimited\n");
\r
2140 fprintf(STDERR, " malloc_max = %lu\n",
\r
2141 (unsigned long) png_get_chunk_malloc_max(dummy_ptr));
\r
2142 png_destroy_read_struct(&dummy_ptr, NULL, NULL);
\r
2144 return (int)(ierror != 0);
\r
2151 " test ignored because libpng was not built with read support\n");
\r
2152 /* And skip this test */
\r
2153 return PNG_LIBPNG_VER < 10600 ? 0 : 77;
\r
2157 /* Generate a compiler error if there is an old png.h in the search path. */
\r
2158 typedef png_libpng_version_1_6_37 Your_png_h_is_not_version_1_6_37;
\r