74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
/* 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_ */
|