BaseTools/Source/C/BrotliCompress/enc/histogram.h

   1 /* Copyright 2013 Google Inc. All Rights Reserved.
   2
   3    Distributed under MIT license.
   4    See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
   5 */
   6
   7 /* Models the histograms of literals, commands and distance codes. */
   8
   9 #ifndef BROTLI_ENC_HISTOGRAM_H_
  10 #define BROTLI_ENC_HISTOGRAM_H_
  11
  12 #include <string.h>  /* memset */
  13
  14 #include "../common/constants.h"
  15 #include "../common/context.h"
  16 #include "../common/platform.h"
  17 #include <brotli/types.h>
  18 #include "./block_splitter.h"
  19 #include "./command.h"
  20
  21 #if defined(__cplusplus) || defined(c_plusplus)
  22 extern "C" {
  23 #endif
  24
  25 /* The distance symbols effectively used by "Large Window Brotli" (32-bit). */
  26 #define BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLS 544
  27
  28 #define FN(X) X ## Literal
  29 #define DATA_SIZE BROTLI_NUM_LITERAL_SYMBOLS
  30 #define DataType uint8_t
  31 #include "./histogram_inc.h"  /* NOLINT(build/include) */
  32 #undef DataType
  33 #undef DATA_SIZE
  34 #undef FN
  35
  36 #define FN(X) X ## Command
  37 #define DataType uint16_t
  38 #define DATA_SIZE BROTLI_NUM_COMMAND_SYMBOLS
  39 #include "./histogram_inc.h"  /* NOLINT(build/include) */
  40 #undef DATA_SIZE
  41 #undef FN
  42
  43 #define FN(X) X ## Distance
  44 #define DATA_SIZE BROTLI_NUM_HISTOGRAM_DISTANCE_SYMBOLS
  45 #include "./histogram_inc.h"  /* NOLINT(build/include) */
  46 #undef DataType
  47 #undef DATA_SIZE
  48 #undef FN
  49
  50 BROTLI_INTERNAL void BrotliBuildHistogramsWithContext(
  51     const Command* cmds, const size_t num_commands,
  52     const BlockSplit* literal_split, const BlockSplit* insert_and_copy_split,
  53     const BlockSplit* dist_split, const uint8_t* ringbuffer, size_t pos,
  54     size_t mask, uint8_t prev_byte, uint8_t prev_byte2,
  55     const ContextType* context_modes, HistogramLiteral* literal_histograms,
  56     HistogramCommand* insert_and_copy_histograms,
  57     HistogramDistance* copy_dist_histograms);
  58
  59 #if defined(__cplusplus) || defined(c_plusplus)
  60 }  /* extern "C" */
  61 #endif
  62
  63 #endif  /* BROTLI_ENC_HISTOGRAM_H_ */