/* Copyright 2017 Google Inc. All Rights Reserved. Distributed under MIT license. See file LICENSE for detail or copy at https://opensource.org/licenses/MIT */ /* (Transparent) Shared Dictionary definition. */ #ifndef BROTLI_COMMON_SHARED_DICTIONARY_INTERNAL_H_ #define BROTLI_COMMON_SHARED_DICTIONARY_INTERNAL_H_ #include "dictionary.h" #include <brotli/shared_dictionary.h> #include "transform.h" #include <brotli/types.h> #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif struct BrotliSharedDictionaryStruct { /* LZ77 prefixes (compound dictionary). */ uint32_t num_prefix; /* max SHARED_BROTLI_MAX_COMPOUND_DICTS */ size_t prefix_size[SHARED_BROTLI_MAX_COMPOUND_DICTS]; const uint8_t* prefix[SHARED_BROTLI_MAX_COMPOUND_DICTS]; /* If set, the context map is used to select word and transform list from 64 contexts, if not set, the context map is not used and only words[0] and transforms[0] are to be used. */ BROTLI_BOOL context_based; uint8_t context_map[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS]; /* Amount of word_list+transform_list combinations. */ uint8_t num_dictionaries; /* Must use num_dictionaries values. */ const BrotliDictionary* words[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS]; /* Must use num_dictionaries values. */ const BrotliTransforms* transforms[SHARED_BROTLI_NUM_DICTIONARY_CONTEXTS]; /* Amount of custom word lists. May be 0 if only Brotli's built-in is used */ uint8_t num_word_lists; /* Contents of the custom words lists. Must be NULL if num_word_lists is 0. */ BrotliDictionary* words_instances; /* Amount of custom transform lists. May be 0 if only Brotli's built-in is used */ uint8_t num_transform_lists; /* Contents of the custom transform lists. Must be NULL if num_transform_lists is 0. */ BrotliTransforms* transforms_instances; /* Concatenated prefix_suffix_maps of the custom transform lists. Must be NULL if num_transform_lists is 0. */ uint16_t* prefix_suffix_maps; /* Memory management */ brotli_alloc_func alloc_func; brotli_free_func free_func; void* memory_manager_opaque; }; typedef struct BrotliSharedDictionaryStruct BrotliSharedDictionaryInternal; #define BrotliSharedDictionary BrotliSharedDictionaryInternal #if defined(__cplusplus) || defined(c_plusplus) } /* extern "C" */ #endif #endif /* BROTLI_COMMON_SHARED_DICTIONARY_INTERNAL_H_ */