126fa459cSmrg/* Copyright 2013 Google Inc. All Rights Reserved.
226fa459cSmrg
326fa459cSmrg   Distributed under MIT license.
426fa459cSmrg   See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
526fa459cSmrg*/
626fa459cSmrg
726fa459cSmrg/* Literal cost model to allow backward reference replacement to be efficient.
826fa459cSmrg*/
926fa459cSmrg
1026fa459cSmrg#ifndef BROTLI_ENC_LITERAL_COST_H_
1126fa459cSmrg#define BROTLI_ENC_LITERAL_COST_H_
1226fa459cSmrg
1326fa459cSmrg#include "../common/platform.h"
1426fa459cSmrg#include <brotli/types.h>
1526fa459cSmrg
1626fa459cSmrg#if defined(__cplusplus) || defined(c_plusplus)
1726fa459cSmrgextern "C" {
1826fa459cSmrg#endif
1926fa459cSmrg
2026fa459cSmrg/* Estimates how many bits the literals in the interval [pos, pos + len) in the
2126fa459cSmrg   ring-buffer (data, mask) will take entropy coded and writes these estimates
2226fa459cSmrg   to the cost[0..len) array. */
2326fa459cSmrgBROTLI_INTERNAL void BrotliEstimateBitCostsForLiterals(
2426fa459cSmrg    size_t pos, size_t len, size_t mask, const uint8_t* data, float* cost);
2526fa459cSmrg
2626fa459cSmrg#if defined(__cplusplus) || defined(c_plusplus)
2726fa459cSmrg}  /* extern "C" */
2826fa459cSmrg#endif
2926fa459cSmrg
3026fa459cSmrg#endif  /* BROTLI_ENC_LITERAL_COST_H_ */
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