/* Copyright 2013 Google Inc. All Rights Reserved.

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

/* Function to find backward reference copies. */

#ifndef BROTLI_ENC_BACKWARD_REFERENCES_H_
#define BROTLI_ENC_BACKWARD_REFERENCES_H_

#include "../common/constants.h"
#include "../common/dictionary.h"
#include <brotli/types.h>
#include "./command.h"
#include "./hash.h"
#include "./port.h"
#include "./quality.h"

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

/* "commands" points to the next output command to write to, "*num_commands" is
   initially the total amount of commands output by previous
   CreateBackwardReferences calls, and must be incremented by the amount written
   by this call. */
BROTLI_INTERNAL void BrotliCreateBackwardReferences(
    const BrotliDictionary* dictionary, size_t num_bytes, size_t position,
    const uint8_t* ringbuffer, size_t ringbuffer_mask,
    const BrotliEncoderParams* params, HasherHandle hasher, int* dist_cache,
    size_t* last_insert_len, Command* commands, size_t* num_commands,
    size_t* num_literals);

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

#endif  /* BROTLI_ENC_BACKWARD_REFERENCES_H_ */