/src/x265/source/common/mv.h
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1 | | /***************************************************************************** |
2 | | * Copyright (C) 2013-2020 MulticoreWare, Inc |
3 | | * |
4 | | * Authors: Steve Borho <steve@borho.org> |
5 | | * |
6 | | * This program is free software; you can redistribute it and/or modify |
7 | | * it under the terms of the GNU General Public License as published by |
8 | | * the Free Software Foundation; either version 2 of the License, or |
9 | | * (at your option) any later version. |
10 | | * |
11 | | * This program is distributed in the hope that it will be useful, |
12 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | | * GNU General Public License for more details. |
15 | | * |
16 | | * You should have received a copy of the GNU General Public License |
17 | | * along with this program; if not, write to the Free Software |
18 | | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. |
19 | | * |
20 | | * This program is also available under a commercial proprietary license. |
21 | | * For more information, contact us at license @ x265.com. |
22 | | *****************************************************************************/ |
23 | | |
24 | | #ifndef X265_MV_H |
25 | | #define X265_MV_H |
26 | | |
27 | | #include "common.h" |
28 | | #include "primitives.h" |
29 | | |
30 | | namespace X265_NS { |
31 | | // private x265 namespace |
32 | | |
33 | | #if _MSC_VER |
34 | | #pragma warning(disable: 4201) // non-standard extension used (nameless struct/union) |
35 | | #endif |
36 | | |
37 | | struct MV |
38 | | { |
39 | | public: |
40 | | |
41 | | union { |
42 | | struct { int32_t x, y; }; |
43 | | |
44 | | int64_t word; |
45 | | }; |
46 | | |
47 | 106M | MV() {} |
48 | 45.6k | MV(int64_t w) : word(w) {} |
49 | 98 | MV(int32_t _x, int32_t _y) : x(_x), y(_y) {} |
50 | | |
51 | 0 | MV& operator =(uint64_t w) { word = w; return *this; } |
52 | | |
53 | 0 | MV& operator +=(const MV& other) { x += other.x; y += other.y; return *this; } |
54 | | |
55 | 0 | MV& operator -=(const MV& other) { x -= other.x; y -= other.y; return *this; } |
56 | | |
57 | 0 | MV& operator >>=(int i) { x >>= i; y >>= i; return *this; } |
58 | | |
59 | | #if USING_FTRAPV |
60 | | /* avoid signed left-shifts when -ftrapv is enabled */ |
61 | | MV& operator <<=(int i) { x *= (1 << i); y *= (1 << i); return *this; } |
62 | | MV operator <<(int i) const { return MV(x * (1 << i), y * (1 << i)); } |
63 | | #else |
64 | 0 | MV& operator <<=(int i) { x <<= i; y <<= i; return *this; } |
65 | 0 | MV operator <<(int i) const { return MV(x << i, y << i); } |
66 | | #endif |
67 | | |
68 | 0 | MV operator >>(int i) const { return MV(x >> i, y >> i); } |
69 | | |
70 | 0 | MV operator *(int32_t i) const { return MV(x * i, y * i); } |
71 | | |
72 | 0 | MV operator -(const MV& other) const { return MV(x - other.x, y - other.y); } |
73 | | |
74 | 0 | MV operator +(const MV& other) const { return MV(x + other.x, y + other.y); } |
75 | | |
76 | 0 | bool operator ==(const MV& other) const { return word == other.word; } |
77 | | |
78 | 0 | bool operator !=(const MV& other) const { return word != other.word; } |
79 | | |
80 | 0 | bool operator !() const { return !word; } |
81 | | |
82 | | // Scale down a QPEL mv to FPEL mv, rounding up by one HPEL offset |
83 | 0 | MV roundToFPel() const { return MV((x + 2) >> 2, (y + 2) >> 2); } |
84 | | |
85 | | // Scale up an FPEL mv to QPEL by shifting up two bits |
86 | 0 | MV toQPel() const { return *this << 2; } |
87 | | |
88 | 0 | bool inline notZero() const { return this->word != 0; } |
89 | | |
90 | 0 | bool inline isSubpel() const { return (this->word & 0x0000000300000003ll) != 0; } |
91 | | |
92 | 0 | MV mvmin(const MV& m) const { return MV(x > m.x ? m.x : x, y > m.y ? m.y : y); } |
93 | | |
94 | 0 | MV mvmax(const MV& m) const { return MV(x < m.x ? m.x : x, y < m.y ? m.y : y); } |
95 | | |
96 | | MV clipped(const MV& _min, const MV& _max) const |
97 | 0 | { |
98 | 0 | MV cl = mvmin(_max); |
99 | |
|
100 | 0 | return cl.mvmax(_min); |
101 | 0 | } |
102 | | |
103 | | // returns true if MV is within range (inclusive) |
104 | | bool checkRange(const MV& _min, const MV& _max) const |
105 | 0 | { |
106 | 0 | return x >= _min.x && x <= _max.x && y >= _min.y && y <= _max.y; |
107 | 0 | } |
108 | | }; |
109 | | } |
110 | | |
111 | | #endif // ifndef X265_MV_H |