2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
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.
11 #ifndef VP9_ENCODER_VP9_COST_H_
12 #define VP9_ENCODER_VP9_COST_H_
14 #include "vpx_dsp/prob.h"
15 #include "vpx/vpx_integer.h"
21 extern const uint16_t vp9_prob_cost[256];
23 // The factor to scale from cost in bits to cost in vp9_prob_cost units.
24 #define VP9_PROB_COST_SHIFT 9
26 #define vp9_cost_zero(prob) (vp9_prob_cost[prob])
28 #define vp9_cost_one(prob) vp9_cost_zero(256 - (prob))
30 #define vp9_cost_bit(prob, bit) vp9_cost_zero((bit) ? 256 - (prob) \
33 static INLINE unsigned int cost_branch256(const unsigned int ct[2],
35 return ct[0] * vp9_cost_zero(p) + ct[1] * vp9_cost_one(p);
38 static INLINE int treed_cost(vpx_tree tree, const vpx_prob *probs,
44 const int bit = (bits >> --len) & 1;
45 cost += vp9_cost_bit(probs[i >> 1], bit);
52 void vp9_cost_tokens(int *costs, const vpx_prob *probs, vpx_tree tree);
53 void vp9_cost_tokens_skip(int *costs, const vpx_prob *probs, vpx_tree tree);
59 #endif // VP9_ENCODER_VP9_COST_H_