brotli/enc/literal_cost.h
2016-06-03 11:19:23 +02:00

26 lines
767 B
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
*/
/* Literal cost model to allow backward reference replacement to be efficient.
*/
#ifndef BROTLI_ENC_LITERAL_COST_H_
#define BROTLI_ENC_LITERAL_COST_H_
#include "../common/types.h"
namespace brotli {
/* Estimates how many bits the literals in the interval [pos, pos + len) in the
ringbuffer (data, mask) will take entropy coded and writes these estimates
to the cost[0..len) array. */
void EstimateBitCostsForLiterals(size_t pos, size_t len, size_t mask,
const uint8_t *data, float *cost);
} // namespace brotli
#endif /* BROTLI_ENC_LITERAL_COST_H_ */