source/libvpx/vp9/decoder/vp9_treereader.h - Issue 111463005: libvpx: Pull from upstream

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Side by Side Diff: source/libvpx/vp9/decoder/vp9_treereader.h

Issue 111463005: libvpx: Pull from upstream (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/

Patch Set: Created 7 years ago

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1 /*

2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.

3 *

4 * Use of this source code is governed by a BSD-style license

5 * that can be found in the LICENSE file in the root of the source

6 * tree. An additional intellectual property rights grant can be found

7 * in the file PATENTS. All contributing project authors may

8 * be found in the AUTHORS file in the root of the source tree.

9 */

10

11

12 #ifndef VP9_DECODER_VP9_TREEREADER_H_

13 #define VP9_DECODER_VP9_TREEREADER_H_

14

15 #include "vp9/common/vp9_treecoder.h"

16 #include "vp9/decoder/vp9_dboolhuff.h"

17

18 #define vp9_read_and_apply_sign(r, value) (vp9_read_bit(r) ? -(value) : (value))

19

20 // Intent of tree data structure is to make decoding trivial.

21 static int treed_read(vp9_reader const r, / !!! must return a 0 or 1 !!! */

22 vp9_tree t,

23 const vp9_prob *const p) {

24 register vp9_tree_index i = 0;

25

26 while ((i = t[ i + vp9_read(r, p[i >> 1])]) > 0)

27 continue;

28

29 return -i;

30 }

31

32 #endif // VP9_DECODER_VP9_TREEREADER_H_

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