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75 lines
2.4 KiB
C++
75 lines
2.4 KiB
C++
/* Copyright 2017 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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/* (Transparent) Shared Dictionary definition. */
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#ifndef BROTLI_COMMON_SHARED_DICTIONARY_INTERNAL_H_
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#define BROTLI_COMMON_SHARED_DICTIONARY_INTERNAL_H_
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#include "dictionary.h"
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#include <brotli/shared_dictionary.h>
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#include "transform.h"
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#include <brotli/types.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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struct BrotliSharedDictionaryStruct {
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/* LZ77 prefixes (compound dictionary). */
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uint32_t num_prefix; /* max SHARED_BROTLI_MAX_COMPOUND_DICTS */
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size_t prefix_size[SHARED_BROTLI_MAX_COMPOUND_DICTS];
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const uint8_t* prefix[SHARED_BROTLI_MAX_COMPOUND_DICTS];
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/* If set, the context map is used to select word and transform list from 64
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contexts, if not set, the context map is not used and only words[0] and
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transforms[0] are to be used. */
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BROTLI_BOOL context_based;
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uint8_t context_map[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];
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/* Amount of word_list+transform_list combinations. */
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uint8_t num_dictionaries;
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/* Must use num_dictionaries values. */
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const BrotliDictionary* words[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];
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/* Must use num_dictionaries values. */
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const BrotliTransforms* transforms[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS];
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/* Amount of custom word lists. May be 0 if only Brotli's built-in is used */
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uint8_t num_word_lists;
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/* Contents of the custom words lists. Must be NULL if num_word_lists is 0. */
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BrotliDictionary* words_instances;
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/* Amount of custom transform lists. May be 0 if only Brotli's built-in is
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used */
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uint8_t num_transform_lists;
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/* Contents of the custom transform lists. Must be NULL if num_transform_lists
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is 0. */
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BrotliTransforms* transforms_instances;
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/* Concatenated prefix_suffix_maps of the custom transform lists. Must be NULL
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if num_transform_lists is 0. */
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uint16_t* prefix_suffix_maps;
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/* Memory management */
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brotli_alloc_func alloc_func;
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brotli_free_func free_func;
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void* memory_manager_opaque;
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};
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typedef struct BrotliSharedDictionaryStruct BrotliSharedDictionaryInternal;
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#define BrotliSharedDictionary BrotliSharedDictionaryInternal
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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_COMMON_SHARED_DICTIONARY_INTERNAL_H_ */
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