ref: bb06546d56a82a4953666dfae91d52881e896075
dir: /vp8/encoder/treewriter.c/
/*
* 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 "treewriter.h"
static void cost(int *const C, vp8_tree T, const vp8_prob *const P, int i,
int c) {
const vp8_prob p = P[i >> 1];
do {
const vp8_tree_index j = T[i];
const int d = c + vp8_cost_bit(p, i & 1);
if (j <= 0) {
C[-j] = d;
} else {
cost(C, T, P, j, d);
}
} while (++i & 1);
}
void vp8_cost_tokens(int *c, const vp8_prob *p, vp8_tree t) {
cost(c, t, p, 0, 0);
}
void vp8_cost_tokens2(int *c, const vp8_prob *p, vp8_tree t, int start) {
cost(c, t, p, start, 0);
}