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/platform.h" 14 #include <brotli/types.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 ring-buffer (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, size_t* histogram, 25 float* cost); 26 27 #if defined(__cplusplus) || defined(c_plusplus) 28 } /* extern "C" */ 29 #endif 30 31 #endif /* BROTLI_ENC_LITERAL_COST_H_ */ 32