media/libvpx/vp8/common/entropymv.h@ac0c01689b40 (annotated)
media/libvpx/vp8/common/entropymv.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.
| 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 __INC_ENTROPYMV_H |
| michael@0 | 13 | #define __INC_ENTROPYMV_H |
| michael@0 | 14 | |
| michael@0 | 15 | #include "treecoder.h" |
| michael@0 | 16 | |
| michael@0 | 17 | enum |
| michael@0 | 18 | { |
| michael@0 | 19 | mv_max = 1023, /* max absolute value of a MV component */ |
| michael@0 | 20 | MVvals = (2 * mv_max) + 1, /* # possible values "" */ |
| michael@0 | 21 | mvfp_max = 255, /* max absolute value of a full pixel MV component */ |
| michael@0 | 22 | MVfpvals = (2 * mvfp_max) +1, /* # possible full pixel MV values */ |
| michael@0 | 23 | |
| michael@0 | 24 | mvlong_width = 10, /* Large MVs have 9 bit magnitudes */ |
| michael@0 | 25 | mvnum_short = 8, /* magnitudes 0 through 7 */ |
| michael@0 | 26 | |
| michael@0 | 27 | /* probability offsets for coding each MV component */ |
| michael@0 | 28 | |
| michael@0 | 29 | mvpis_short = 0, /* short (<= 7) vs long (>= 8) */ |
| michael@0 | 30 | MVPsign, /* sign for non-zero */ |
| michael@0 | 31 | MVPshort, /* 8 short values = 7-position tree */ |
| michael@0 | 32 | |
| michael@0 | 33 | MVPbits = MVPshort + mvnum_short - 1, /* mvlong_width long value bits */ |
| michael@0 | 34 | MVPcount = MVPbits + mvlong_width /* (with independent probabilities) */ |
| michael@0 | 35 | }; |
| michael@0 | 36 | |
| michael@0 | 37 | typedef struct mv_context |
| michael@0 | 38 | { |
| michael@0 | 39 | vp8_prob prob[MVPcount]; /* often come in row, col pairs */ |
| michael@0 | 40 | } MV_CONTEXT; |
| michael@0 | 41 | |
| michael@0 | 42 | extern const MV_CONTEXT vp8_mv_update_probs[2], vp8_default_mv_context[2]; |
| michael@0 | 43 | |
| michael@0 | 44 | #endif |
