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40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
/* Copyright 2013 Google Inc. All Rights Reserved.
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Distributed under MIT license.
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See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
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*/
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/* Class to model the static dictionary. */
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#ifndef BROTLI_ENC_STATIC_DICT_H_
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#define BROTLI_ENC_STATIC_DICT_H_
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#include "../common/dictionary.h"
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#include <brotli/types.h>
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#include "./port.h"
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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#define BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN 37
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static const uint32_t kInvalidMatch = 0xfffffff;
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/* Matches data against static dictionary words, and for each length l,
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for which a match is found, updates matches[l] to be the minimum possible
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(distance << 5) + len_code.
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Returns 1 if matches have been found, otherwise 0.
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Prerequisites:
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matches array is at least BROTLI_MAX_STATIC_DICTIONARY_MATCH_LEN + 1 long
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all elements are initialized to kInvalidMatch */
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BROTLI_INTERNAL BROTLI_BOOL BrotliFindAllStaticDictionaryMatches(
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const BrotliDictionary* dictionary,
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const uint8_t* data, size_t min_length, size_t max_length,
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uint32_t* matches);
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#if defined(__cplusplus) || defined(c_plusplus)
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} /* extern "C" */
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#endif
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#endif /* BROTLI_ENC_STATIC_DICT_H_ */
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