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35e69fc7cf
* New feature: "Large Window Brotli" By setting special encoder/decoder flag it is now possible to extend LZ-window up to 30 bits; though produced stream will not be RFC7932 compliant. Added new dictionary generator - "DSH". It combines speed of "Sieve" and quality of "DM". Plus utilities to prepare train corpora (remove unique strings). Improved compression ratio: now two sub-blocks could be stitched: the last copy command could be extended to span the next sub-block. Fixed compression ineffectiveness caused by floating numbers rounding and wrong cost heuristic. Other C changes: - combined / moved `context.h` to `common` - moved transforms to `common` - unified some aspects of code formatting - added an abstraction for encoder (static) dictionary - moved default allocator/deallocator functions to `common` brotli CLI: - window size is auto-adjusted if not specified explicitly Java: - added "eager" decoding both to JNI wrapper and pure decoder - huge speed-up of `DictionaryData` initialization * Add dictionaryless compressed dictionary * Fix `sources.lst` * Fix `sources.lst` and add a note that `libtool` is also required. * Update setup.py * Fix `EagerStreamTest` * Fix BUILD file * Add missing `libdivsufsort` dependency * Fix "unused parameter" warning.
43 lines
1.1 KiB
C
Executable File
43 lines
1.1 KiB
C
Executable File
/* 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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#ifndef BROTLI_ENC_ENCODER_DICT_H_
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#define BROTLI_ENC_ENCODER_DICT_H_
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#include "../common/dictionary.h"
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#include "../common/platform.h"
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#include <brotli/types.h>
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#include "./static_dict_lut.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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/* Dictionary data (words and transforms) for 1 possible context */
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typedef struct BrotliEncoderDictionary {
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const BrotliDictionary* words;
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/* cut off for fast encoder */
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uint32_t cutoffTransformsCount;
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uint64_t cutoffTransforms;
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/* from dictionary_hash.h, for fast encoder */
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const uint16_t* hash_table;
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/* from static_dict_lut.h, for slow encoder */
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const uint16_t* buckets;
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const DictWord* dict_words;
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} BrotliEncoderDictionary;
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BROTLI_INTERNAL void BrotliInitEncoderDictionary(BrotliEncoderDictionary* dict);
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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_ENCODER_DICT_H_ */
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