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Diffstat (limited to 'c/enc/static_dict.h')
-rw-r--r-- | c/enc/static_dict.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/c/enc/static_dict.h b/c/enc/static_dict.h new file mode 100644 index 0000000..fb74b13 --- /dev/null +++ b/c/enc/static_dict.h @@ -0,0 +1,39 @@ +/* Copyright 2013 Google Inc. All Rights Reserved. + + Distributed under MIT license. + See file LICENSE for detail or copy at https://opensource.org/licenses/MIT +*/ + +/* Class to model the static dictionary. */ + +#ifndef BROTLI_ENC_STATIC_DICT_H_ +#define BROTLI_ENC_STATIC_DICT_H_ + +#include "../common/dictionary.h" +#include <brotli/types.h> +#include "./port.h" + +#if defined(__cplusplus) || defined(c_plusplus) +extern "C" { +#endif + +#define BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN 37 +static const uint32_t kInvalidMatch = 0xfffffff; + +/* Matches data against static dictionary words, and for each length l, + for which a match is found, updates matches[l] to be the minimum possible + (distance << 5) + len_code. + Returns 1 if matches have been found, otherwise 0. + Prerequisites: + matches array is at least BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1 long + all elements are initialized to kInvalidMatch */ +BROTLI_INTERNAL BROTLI_BOOL BrotliFindAllStaticDictionaryMatches( + const BrotliDictionary* dictionary, + const uint8_t* data, size_t min_length, size_t max_length, + uint32_t* matches); + +#if defined(__cplusplus) || defined(c_plusplus) +} /* extern "C" */ +#endif + +#endif /* BROTLI_ENC_STATIC_DICT_H_ */ |