The Tor Browser: media/libvpx/vp9/encoder/vp9_treewriter.c@6474c204b198 (annotated)

media/libvpx/vp9/encoder/vp9_treewriter.c@6474c204b198 (annotated)

Wed, 31 Dec 2014 06:09:35 +0100

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  *  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.
  */
 #include "vp9/encoder/vp9_treewriter.h"
 static void cost(int *costs, vp9_tree tree, const vp9_prob *probs,
                  int i, int c) {
   const vp9_prob prob = probs[i / 2];
   int b;
   for (b = 0; b <= 1; ++b) {
     const int cc = c + vp9_cost_bit(prob, b);
     const vp9_tree_index ii = tree[i + b];
     if (ii <= 0)
       costs[-ii] = cc;
     else
       cost(costs, tree, probs, ii, cc);
   }
 }
 void vp9_cost_tokens(int *costs, const vp9_prob *probs, vp9_tree tree) {
   cost(costs, tree, probs, 0, 0);
 }
 void vp9_cost_tokens_skip(int *costs, const vp9_prob *probs, vp9_tree tree) {
   assert(tree[0] <= 0 && tree[1] > 0);
   costs[-tree[0]] = vp9_cost_bit(probs[0], 0);
   cost(costs, tree, probs, 2, 0);
 }