media/libvpx/vp9/decoder/vp9_treereader.h@b8a032363ba2 (annotated)
media/libvpx/vp9/decoder/vp9_treereader.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license |
| michael@0 | 5 | * that can be found in the LICENSE file in the root of the source |
| michael@0 | 6 | * tree. An additional intellectual property rights grant can be found |
| michael@0 | 7 | * in the file PATENTS. All contributing project authors may |
| michael@0 | 8 | * be found in the AUTHORS file in the root of the source tree. |
| michael@0 | 9 | */ |
| michael@0 | 10 | |
| michael@0 | 11 | |
| michael@0 | 12 | #ifndef VP9_DECODER_VP9_TREEREADER_H_ |
| michael@0 | 13 | #define VP9_DECODER_VP9_TREEREADER_H_ |
| michael@0 | 14 | |
| michael@0 | 15 | #include "vp9/common/vp9_treecoder.h" |
| michael@0 | 16 | #include "vp9/decoder/vp9_dboolhuff.h" |
| michael@0 | 17 | |
| michael@0 | 18 | // Intent of tree data structure is to make decoding trivial. |
| michael@0 | 19 | static int treed_read(vp9_reader *const r, /* !!! must return a 0 or 1 !!! */ |
| michael@0 | 20 | vp9_tree t, |
| michael@0 | 21 | const vp9_prob *const p) { |
| michael@0 | 22 | register vp9_tree_index i = 0; |
| michael@0 | 23 | |
| michael@0 | 24 | while ((i = t[ i + vp9_read(r, p[i >> 1])]) > 0) |
| michael@0 | 25 | continue; |
| michael@0 | 26 | |
| michael@0 | 27 | return -i; |
| michael@0 | 28 | } |
| michael@0 | 29 | |
| michael@0 | 30 | #endif // VP9_DECODER_VP9_TREEREADER_H_ |
