40 lines
889 B
C
40 lines
889 B
C
/*
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* Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "treewriter.h"
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static void cost(
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int *const C,
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vp8_tree T,
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const vp8_prob *const P,
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int i,
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int c
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)
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{
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const vp8_prob p = P [i>>1];
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do
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{
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const vp8_tree_index j = T[i];
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const int d = c + vp8_cost_bit(p, i & 1);
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if (j <= 0)
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C[-j] = d;
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else
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cost(C, T, P, j, d);
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}
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while (++i & 1);
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}
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void vp8_cost_tokens(int *c, const vp8_prob *p, vp8_tree t)
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{
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cost(c, t, p, 0, 0);
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}
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