/* * Copyright (c) 2013 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.
*/
/* We build coding trees compactly in arrays. Each node of the tree is a pair of vpx_tree_indices. Array index often references a corresponding probability table. Index <= 0 means done encoding/decoding and value = -Index, Index > 0 means need another bit, specification at index.
Nonnegative indices are always even; processing begins at node 0. */
/* This function assumes prob1 and prob2 are already within [1,255] range. */ staticINLINE vpx_prob weighted_prob(int prob1, int prob2, int factor) { return ROUND_POWER_OF_TWO(prob1 * (256 - factor) + prob2 * factor, 8);
}
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