1 /*
2  *  Copyright (c) 2013 The WebM project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef VPX_VP9_ENCODER_VP9_SUBEXP_H_
12 #define VPX_VP9_ENCODER_VP9_SUBEXP_H_
13 
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17 
18 #include "vpx_dsp/prob.h"
19 
20 struct vpx_writer;
21 
22 void vp9_write_prob_diff_update(struct vpx_writer *w, vpx_prob newp,
23                                 vpx_prob oldp);
24 
25 void vp9_cond_prob_diff_update(struct vpx_writer *w, vpx_prob *oldp,
26                                const unsigned int ct[2]);
27 
28 int vp9_prob_diff_update_savings_search(const unsigned int *ct, vpx_prob oldp,
29                                         vpx_prob *bestp, vpx_prob upd);
30 
31 int vp9_prob_diff_update_savings_search_model(const unsigned int *ct,
32                                               const vpx_prob oldp,
33                                               vpx_prob *bestp, vpx_prob upd,
34                                               int stepsize);
35 
36 #ifdef __cplusplus
37 }  // extern "C"
38 #endif
39 
40 #endif  // VPX_VP9_ENCODER_VP9_SUBEXP_H_
41