ref: 74c67e3da3fe62ab2599dbb471657db7a8e03d16
dir: /vp10/encoder/treewriter.h/
/* * Copyright (c) 2010 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #ifndef VP10_ENCODER_TREEWRITER_H_ #define VP10_ENCODER_TREEWRITER_H_ #include "vpx_dsp/bitwriter.h" #ifdef __cplusplus extern "C" { #endif void vp10_tree_probs_from_distribution(vpx_tree tree, unsigned int branch_ct[ /* n - 1 */ ][2], const unsigned int num_events[ /* n */ ]); struct vp10_token { int value; int len; }; void vp10_tokens_from_tree(struct vp10_token*, const vpx_tree_index *); static INLINE void vp10_write_tree(vpx_writer *w, const vpx_tree_index *tree, const vpx_prob *probs, int bits, int len, vpx_tree_index i) { do { const int bit = (bits >> --len) & 1; vpx_write(w, bit, probs[i >> 1]); i = tree[i + bit]; } while (len); } static INLINE void vp10_write_token(vpx_writer *w, const vpx_tree_index *tree, const vpx_prob *probs, const struct vp10_token *token) { vp10_write_tree(w, tree, probs, token->value, token->len, 0); } #ifdef __cplusplus } // extern "C" #endif #endif // VP10_ENCODER_TREEWRITER_H_