BaseTools/Source/C/BrotliCompress/enc/literal_cost.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 /* Literal cost model to allow backward reference replacement to be efficient.
   8 */
   9
  10 #ifndef BROTLI_ENC_LITERAL_COST_H_
  11 #define BROTLI_ENC_LITERAL_COST_H_
  12
  13 #include "../common/types.h"
  14 #include "./port.h"
  15
  16 #if defined(__cplusplus) || defined(c_plusplus)
  17 extern "C" {
  18 #endif
  19
  20 /* Estimates how many bits the literals in the interval [pos, pos + len) in the
  21    ringbuffer (data, mask) will take entropy coded and writes these estimates
  22    to the cost[0..len) array. */
  23 BROTLI_INTERNAL void BrotliEstimateBitCostsForLiterals(
  24     size_t pos, size_t len, size_t mask, const uint8_t *data, float *cost);
  25
  26 #if defined(__cplusplus) || defined(c_plusplus)
  27 }  /* extern "C" */
  28 #endif
  29
  30 #endif  /* BROTLI_ENC_LITERAL_COST_H_ */