The Tor Browser / file comparison
comparison: media/libvpx/vp8/common/entropymv.h
media/libvpx/vp8/common/entropymv.h
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:f5dc667e791c |
|---|---|
| 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 __INC_ENTROPYMV_H | |
| 13 #define __INC_ENTROPYMV_H | |
| 14 | |
| 15 #include "treecoder.h" | |
| 16 | |
| 17 enum | |
| 18 { | |
| 19 mv_max = 1023, /* max absolute value of a MV component */ | |
| 20 MVvals = (2 * mv_max) + 1, /* # possible values "" */ | |
| 21 mvfp_max = 255, /* max absolute value of a full pixel MV component */ | |
| 22 MVfpvals = (2 * mvfp_max) +1, /* # possible full pixel MV values */ | |
| 23 | |
| 24 mvlong_width = 10, /* Large MVs have 9 bit magnitudes */ | |
| 25 mvnum_short = 8, /* magnitudes 0 through 7 */ | |
| 26 | |
| 27 /* probability offsets for coding each MV component */ | |
| 28 | |
| 29 mvpis_short = 0, /* short (<= 7) vs long (>= 8) */ | |
| 30 MVPsign, /* sign for non-zero */ | |
| 31 MVPshort, /* 8 short values = 7-position tree */ | |
| 32 | |
| 33 MVPbits = MVPshort + mvnum_short - 1, /* mvlong_width long value bits */ | |
| 34 MVPcount = MVPbits + mvlong_width /* (with independent probabilities) */ | |
| 35 }; | |
| 36 | |
| 37 typedef struct mv_context | |
| 38 { | |
| 39 vp8_prob prob[MVPcount]; /* often come in row, col pairs */ | |
| 40 } MV_CONTEXT; | |
| 41 | |
| 42 extern const MV_CONTEXT vp8_mv_update_probs[2], vp8_default_mv_context[2]; | |
| 43 | |
| 44 #endif |
