BaseTools/Source/C/BrotliCompress/enc/static_dict.h

   1 /* Copyright 2013 Google Inc. All Rights Reserved.
   2
   3    Distributed under MIT license.
   4    See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
   5 */
   6
   7 /* Class to model the static dictionary. */
   8
   9 #ifndef BROTLI_ENC_STATIC_DICT_H_
  10 #define BROTLI_ENC_STATIC_DICT_H_
  11
  12 #include "../common/dictionary.h"
  13 #include "../common/platform.h"
  14 #include <brotli/types.h>
  15 #include "./encoder_dict.h"
  16
  17 #if defined(__cplusplus) || defined(c_plusplus)
  18 extern "C" {
  19 #endif
  20
  21 #define BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN 37
  22 static const uint32_t kInvalidMatch = 0xFFFFFFF;
  23
  24 /* Matches data against static dictionary words, and for each length l,
  25    for which a match is found, updates matches[l] to be the minimum possible
  26      (distance << 5) + len_code.
  27    Returns 1 if matches have been found, otherwise 0.
  28    Prerequisites:
  29      matches array is at least BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1 long
  30      all elements are initialized to kInvalidMatch */
  31 BROTLI_INTERNAL BROTLI_BOOL BrotliFindAllStaticDictionaryMatches(
  32     const BrotliEncoderDictionary* dictionary,
  33     const uint8_t* data, size_t min_length, size_t max_length,
  34     uint32_t* matches);
  35
  36 #if defined(__cplusplus) || defined(c_plusplus)
  37 }  /* extern "C" */
  38 #endif
  39
  40 #endif  /* BROTLI_ENC_STATIC_DICT_H_ */