File: block_splitter.h

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/* Copyright 2013 Google Inc. All Rights Reserved.

   Distributed under MIT license.
   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
*/

/* Block split point selection utilities. */

#ifndef BROTLI_ENC_BLOCK_SPLITTER_H_
#define BROTLI_ENC_BLOCK_SPLITTER_H_

#include "../common/platform.h"
#include <brotli/types.h>
#include "command.h"
#include "memory.h"
#include "quality.h"

#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif

typedef struct BlockSplit {
  size_t num_types;  /* Amount of distinct types */
  size_t num_blocks;  /* Amount of values in types and length */
  uint8_t* types;
  uint32_t* lengths;

  size_t types_alloc_size;
  size_t lengths_alloc_size;
} BlockSplit;

BROTLI_INTERNAL void BrotliInitBlockSplit(BlockSplit* self);
BROTLI_INTERNAL void BrotliDestroyBlockSplit(MemoryManager* m,
                                             BlockSplit* self);

BROTLI_INTERNAL void BrotliSplitBlock(MemoryManager* m,
                                      const Command* cmds,
                                      const size_t num_commands,
                                      const uint8_t* data,
                                      const size_t offset,
                                      const size_t mask,
                                      const BrotliEncoderParams* params,
                                      BlockSplit* literal_split,
                                      BlockSplit* insert_and_copy_split,
                                      BlockSplit* dist_split);

#if defined(__cplusplus) || defined(c_plusplus)
}  /* extern "C" */
#endif

#endif  /* BROTLI_ENC_BLOCK_SPLITTER_H_ */