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 <brotli/types.h> 13 14 #include "../common/dictionary.h" 15 #include "../common/platform.h" 16 #include "encoder_dict.h" 17 18 #if defined(__cplusplus) || defined(c_plusplus) 19 extern "C" { 20 #endif 21 22 #define BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN 37 23 static const uint32_t kInvalidMatch = 0xFFFFFFF; 24 25 /* Matches data against static dictionary words, and for each length l, 26 for which a match is found, updates matches[l] to be the minimum possible 27 (distance << 5) + len_code. 28 Returns 1 if matches have been found, otherwise 0. 29 Prerequisites: 30 matches array is at least BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1 long 31 all elements are initialized to kInvalidMatch */ 32 BROTLI_INTERNAL BROTLI_BOOL BrotliFindAllStaticDictionaryMatches( 33 const BrotliEncoderDictionary* dictionary, 34 const uint8_t* data, size_t min_length, size_t max_length, 35 uint32_t* matches); 36 37 #if defined(__cplusplus) || defined(c_plusplus) 38 } /* extern "C" */ 39 #endif 40 41 #endif /* BROTLI_ENC_STATIC_DICT_H_ */ 42