The Tor Browser: media/libvpx/vp9/decoder/vp9

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     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  */

    12 #ifndef VP9_DECODER_VP9_TREEREADER_H_

    13 #define VP9_DECODER_VP9_TREEREADER_H_

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

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

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

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

    20                       vp9_tree t,

    21                       const vp9_prob *const p) {

    22   register vp9_tree_index i = 0;

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

    25     continue;

    27   return -i;

    28 }

    30 #endif  // VP9_DECODER_VP9_TREEREADER_H_

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