libextractor

GNU libextractor
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test_webp.c (3045B)

      1 /*
      2      This file is part of libextractor.
      3      Copyright (C) 2026 Vidyut Samanta and Christian Grothoff
      4 
      5      libextractor is free software; you can redistribute it and/or modify
      6      it under the terms of the GNU General Public License as published
      7      by the Free Software Foundation; either version 3, or (at your
      8      option) any later version.
      9 
     10      libextractor is distributed in the hope that it will be useful, but
     11      WITHOUT ANY WARRANTY; without even the implied warranty of
     12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13      General Public License for more details.
     14 
     15      You should have received a copy of the GNU General Public License
     16      along with libextractor; see the file COPYING.  If not, write to the
     17      Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18      Boston, MA 02110-1301, USA.
     19 */
     20 /**
     21  * @file plugins/test_webp.c
     22  * @brief testcase for the webp plugin
     23  * @author Christian Grothoff
     24  */
     25 #include "platform.h"
     26 #include "test_lib.h"
     27 
     28 
     29 /**
     30  * Shorthand for a UTF-8 solution entry.
     31  */
     32 #define UTF8(t, s) { (t), EXTRACTOR_METAFORMAT_UTF8, "text/plain", \
     33                      (s), strlen (s) + 1, 0 }
     34 
     35 
     36 /**
     37  * Main function for the webp testcase.
     38  *
     39  * @param argc number of arguments (ignored)
     40  * @param argv arguments (ignored)
     41  * @return 0 on success
     42  */
     43 int
     44 main (int argc, char *argv[])
     45 {
     46   /* testdata/webp_test.webp is an extended (VP8X) animated WebP with
     47      every optional chunk the container defines.  The canvas size comes
     48      from the VP8X header, the codec from the sub-chunk inside the first
     49      animation frame, and the duration from summing the three frame
     50      durations (100 + 150 + 250 ms), so the assertions below only hold
     51      if the whole chunk walk works. */
     52   struct SolutionData webp_sol[] = {
     53     UTF8 (EXTRACTOR_METATYPE_MIMETYPE,
     54           "image/webp"),
     55     UTF8 (EXTRACTOR_METATYPE_FORMAT,
     56           "WebP (extended)"),
     57     UTF8 (EXTRACTOR_METATYPE_CODEC,
     58           "VP8L (lossless)"),
     59     UTF8 (EXTRACTOR_METATYPE_IMAGE_DIMENSIONS,
     60           "40x24"),
     61     UTF8 (EXTRACTOR_METATYPE_ATTRIBUTES,
     62           "alpha, animation, ICC profile, EXIF, XMP"),
     63     /* a bare number, as the heif plugin reports it: whether there is an
     64        alpha channel is asserted through ATTRIBUTES above */
     65     UTF8 (EXTRACTOR_METATYPE_COLOR_DEPTH,
     66           "8"),
     67     UTF8 (EXTRACTOR_METATYPE_COLOR_PROFILE,
     68           "ICC profile, 136 bytes"),
     69     UTF8 (EXTRACTOR_METATYPE_ENTRY_COUNT,
     70           "3"),
     71     UTF8 (EXTRACTOR_METATYPE_DURATION,
     72           "500 ms"),
     73     UTF8 (EXTRACTOR_METATYPE_COMMENT,
     74           "animation: 3 frames, looping forever, background #ff204080 BGRA"),
     75     UTF8 (EXTRACTOR_METATYPE_COMMENT,
     76           "contains an EXIF chunk"),
     77     UTF8 (EXTRACTOR_METATYPE_COMMENT,
     78           "contains an XMP chunk"),
     79     { 0, 0, NULL, NULL, 0, -1 }
     80   };
     81   struct ProblemSet ps[] = {
     82     { "testdata/webp_test.webp",
     83       webp_sol },
     84     { NULL, NULL }
     85   };
     86 
     87   (void) argc;
     88   (void) argv;
     89   return ET_main ("webp", ps);
     90 }
     91 
     92 
     93 /* end of test_webp.c */