media/libvpx/vp9/decoder/vp9_treereader.h

Thu, 15 Jan 2015 15:59:08 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 15 Jan 2015 15:59:08 +0100
branch
TOR_BUG_9701
changeset 10
ac0c01689b40
permissions
-rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     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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