The Tor Browser / file comparison
comparison: media/libvpx/vp9/encoder/vp9_treewriter.c
media/libvpx/vp9/encoder/vp9_treewriter.c
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:b5528efb461b |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2010 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 #include "vp9/encoder/vp9_treewriter.h" | |
| 12 | |
| 13 static void cost(int *costs, vp9_tree tree, const vp9_prob *probs, | |
| 14 int i, int c) { | |
| 15 const vp9_prob prob = probs[i / 2]; | |
| 16 int b; | |
| 17 | |
| 18 for (b = 0; b <= 1; ++b) { | |
| 19 const int cc = c + vp9_cost_bit(prob, b); | |
| 20 const vp9_tree_index ii = tree[i + b]; | |
| 21 | |
| 22 if (ii <= 0) | |
| 23 costs[-ii] = cc; | |
| 24 else | |
| 25 cost(costs, tree, probs, ii, cc); | |
| 26 } | |
| 27 } | |
| 28 | |
| 29 void vp9_cost_tokens(int *costs, const vp9_prob *probs, vp9_tree tree) { | |
| 30 cost(costs, tree, probs, 0, 0); | |
| 31 } | |
| 32 | |
| 33 void vp9_cost_tokens_skip(int *costs, const vp9_prob *probs, vp9_tree tree) { | |
| 34 assert(tree[0] <= 0 && tree[1] > 0); | |
| 35 | |
| 36 costs[-tree[0]] = vp9_cost_bit(probs[0], 0); | |
| 37 cost(costs, tree, probs, 2, 0); | |
| 38 } |
