literal_cost.h (889B)
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 15 #if defined(__cplusplus) || defined(c_plusplus) 16 extern "C" { 17 #endif 18 19 /* Estimates how many bits the literals in the interval [pos, pos + len) in the 20 ring-buffer (data, mask) will take entropy coded and writes these estimates 21 to the cost[0..len) array. */ 22 BROTLI_INTERNAL void BrotliEstimateBitCostsForLiterals( 23 size_t pos, size_t len, size_t mask, const uint8_t* data, size_t* histogram, 24 float* cost); 25 26 #if defined(__cplusplus) || defined(c_plusplus) 27 } /* extern "C" */ 28 #endif 29 30 #endif /* BROTLI_ENC_LITERAL_COST_H_ */