mirror of
https://github.com/google/brotli.git
synced 2024-12-28 02:31:05 +00:00
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/* Copyright 2013 Google Inc. All Rights Reserved.
|
|
|
|
Distributed under MIT license.
|
|
See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
|
|
*/
|
|
|
|
/* Models the histograms of literals, commands and distance codes. */
|
|
|
|
#ifndef BROTLI_ENC_HISTOGRAM_H_
|
|
#define BROTLI_ENC_HISTOGRAM_H_
|
|
|
|
#include <string.h> /* memset */
|
|
|
|
#include "../common/constants.h"
|
|
#include "../common/context.h"
|
|
#include "../common/platform.h"
|
|
#include <brotli/types.h>
|
|
#include "block_splitter.h"
|
|
#include "command.h"
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* The distance symbols effectively used by "Large Window Brotli" (32-bit). */
|
|
#define BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLS 544
|
|
|
|
#define FN(X) X ## Literal
|
|
#define DATA_SIZE BROTLI_NUM_LITERAL_SYMBOLS
|
|
#define DataType uint8_t
|
|
#include "histogram_inc.h" /* NOLINT(build/include) */
|
|
#undef DataType
|
|
#undef DATA_SIZE
|
|
#undef FN
|
|
|
|
#define FN(X) X ## Command
|
|
#define DataType uint16_t
|
|
#define DATA_SIZE BROTLI_NUM_COMMAND_SYMBOLS
|
|
#include "histogram_inc.h" /* NOLINT(build/include) */
|
|
#undef DATA_SIZE
|
|
#undef FN
|
|
|
|
#define FN(X) X ## Distance
|
|
#define DATA_SIZE BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLS
|
|
#include "histogram_inc.h" /* NOLINT(build/include) */
|
|
#undef DataType
|
|
#undef DATA_SIZE
|
|
#undef FN
|
|
|
|
BROTLI_INTERNAL void BrotliBuildHistogramsWithContext(
|
|
const Command* cmds, const size_t num_commands,
|
|
const BlockSplit* literal_split, const BlockSplit* insert_and_copy_split,
|
|
const BlockSplit* dist_split, const uint8_t* ringbuffer, size_t pos,
|
|
size_t mask, uint8_t prev_byte, uint8_t prev_byte2,
|
|
const ContextType* context_modes, HistogramLiteral* literal_histograms,
|
|
HistogramCommand* insert_and_copy_histograms,
|
|
HistogramDistance* copy_dist_histograms);
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* BROTLI_ENC_HISTOGRAM_H_ */
|