2 * Copyright (c) 2010 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_TREEWRITER_H_
12 #define VP9_ENCODER_VP9_TREEWRITER_H_
14 #include "vpx_dsp/bitwriter.h"
20 void vp9_tree_probs_from_distribution(vpx_tree tree,
21 unsigned int branch_ct[ /* n - 1 */ ][2],
22 const unsigned int num_events[ /* n */ ]);
29 void vp9_tokens_from_tree(struct vp9_token*, const vpx_tree_index *);
31 static INLINE void vp9_write_tree(vpx_writer *w, const vpx_tree_index *tree,
32 const vpx_prob *probs, int bits, int len,
35 const int bit = (bits >> --len) & 1;
36 vpx_write(w, bit, probs[i >> 1]);
41 static INLINE void vp9_write_token(vpx_writer *w, const vpx_tree_index *tree,
42 const vpx_prob *probs,
43 const struct vp9_token *token) {
44 vp9_write_tree(w, tree, probs, token->value, token->len, 0);
51 #endif // VP9_ENCODER_VP9_TREEWRITER_H_