Zach Reizner | 15c9ffa | 2015-03-31 17:56:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef DRM_HWCOMPOSER_SEPERATE_RECTS_H_ |
| 18 | #define DRM_HWCOMPOSER_SEPERATE_RECTS_H_ |
| 19 | |
| 20 | #include <stdint.h> |
Zach Reizner | fd6dc33 | 2015-10-13 21:12:48 -0700 | [diff] [blame] | 21 | |
| 22 | #include <sstream> |
Zach Reizner | 15c9ffa | 2015-03-31 17:56:36 -0700 | [diff] [blame] | 23 | #include <vector> |
| 24 | |
| 25 | namespace seperate_rects { |
| 26 | |
| 27 | template <typename TFloat> |
| 28 | struct Rect { |
| 29 | union { |
| 30 | struct { |
| 31 | TFloat left, top, right, bottom; |
| 32 | }; |
| 33 | struct { |
| 34 | TFloat x1, y1, x2, y2; |
| 35 | }; |
| 36 | TFloat bounds[4]; |
| 37 | }; |
| 38 | |
| 39 | typedef TFloat TNum; |
| 40 | |
| 41 | Rect() { |
| 42 | } |
| 43 | |
| 44 | Rect(TFloat xx1, TFloat yy1, TFloat xx2, TFloat yy2) |
| 45 | : x1(xx1), y1(yy1), x2(xx2), y2(yy2) { |
| 46 | } |
| 47 | |
Zach Reizner | 4a25365 | 2015-09-10 18:30:54 -0700 | [diff] [blame] | 48 | template <typename T> |
| 49 | Rect(const Rect<T> &rhs) { |
Zach Reizner | 15c9ffa | 2015-03-31 17:56:36 -0700 | [diff] [blame] | 50 | for (int i = 0; i < 4; i++) |
| 51 | bounds[i] = rhs.bounds[i]; |
| 52 | } |
| 53 | |
Zach Reizner | 4a25365 | 2015-09-10 18:30:54 -0700 | [diff] [blame] | 54 | template <typename T> |
| 55 | Rect<TFloat> &operator=(const Rect<T> &rhs) { |
| 56 | for (int i = 0; i < 4; i++) |
| 57 | bounds[i] = rhs.bounds[i]; |
| 58 | return *this; |
| 59 | } |
| 60 | |
Zach Reizner | 15c9ffa | 2015-03-31 17:56:36 -0700 | [diff] [blame] | 61 | bool operator==(const Rect &rhs) const { |
| 62 | for (int i = 0; i < 4; i++) { |
| 63 | if (bounds[i] != rhs.bounds[i]) |
| 64 | return false; |
| 65 | } |
| 66 | |
| 67 | return true; |
| 68 | } |
Zach Reizner | a281f8f | 2015-10-09 10:02:54 -0700 | [diff] [blame] | 69 | |
| 70 | TFloat width() const { |
| 71 | return bounds[2] - bounds[0]; |
| 72 | } |
| 73 | |
| 74 | TFloat height() const { |
| 75 | return bounds[3] - bounds[1]; |
| 76 | } |
| 77 | |
| 78 | TFloat area() const { |
| 79 | return width() * height(); |
| 80 | } |
Zach Reizner | fd6dc33 | 2015-10-13 21:12:48 -0700 | [diff] [blame] | 81 | |
| 82 | void Dump(std::ostringstream *out) const { |
| 83 | *out << "[x/y/w/h]=" << left << "/" << top << "/" << width() << "/" |
| 84 | << height(); |
| 85 | } |
Zach Reizner | 15c9ffa | 2015-03-31 17:56:36 -0700 | [diff] [blame] | 86 | }; |
| 87 | |
| 88 | template <typename TUInt> |
| 89 | struct IdSet { |
| 90 | public: |
| 91 | typedef TUInt TId; |
| 92 | |
| 93 | IdSet() : bitset(0) { |
| 94 | } |
| 95 | |
| 96 | IdSet(TId id) : bitset(0) { |
| 97 | add(id); |
| 98 | } |
| 99 | |
| 100 | void add(TId id) { |
| 101 | bitset |= ((TUInt)1) << id; |
| 102 | } |
| 103 | |
| 104 | void subtract(TId id) { |
| 105 | bitset &= ~(((TUInt)1) << id); |
| 106 | } |
| 107 | |
| 108 | bool isEmpty() const { |
| 109 | return bitset == 0; |
| 110 | } |
| 111 | |
| 112 | TUInt getBits() const { |
| 113 | return bitset; |
| 114 | } |
| 115 | |
| 116 | bool operator==(const IdSet<TId> &rhs) const { |
| 117 | return bitset == rhs.bitset; |
| 118 | } |
| 119 | |
| 120 | bool operator<(const IdSet<TId> &rhs) const { |
| 121 | return bitset < rhs.bitset; |
| 122 | } |
| 123 | |
| 124 | IdSet<TId> operator|(const IdSet<TId> &rhs) const { |
| 125 | IdSet ret; |
| 126 | ret.bitset = bitset | rhs.bitset; |
| 127 | return ret; |
| 128 | } |
| 129 | |
| 130 | IdSet<TId> operator|(TId id) const { |
| 131 | IdSet<TId> ret; |
| 132 | ret.bitset = bitset; |
| 133 | ret.add(id); |
| 134 | return ret; |
| 135 | } |
| 136 | |
| 137 | static const int max_elements = sizeof(TId) * 8; |
| 138 | |
| 139 | private: |
| 140 | TUInt bitset; |
| 141 | }; |
| 142 | |
| 143 | template <typename TId, typename TNum> |
| 144 | struct RectSet { |
| 145 | IdSet<TId> id_set; |
| 146 | Rect<TNum> rect; |
| 147 | |
| 148 | RectSet(const IdSet<TId> &i, const Rect<TNum> &r) : id_set(i), rect(r) { |
| 149 | } |
| 150 | |
| 151 | bool operator==(const RectSet<TId, TNum> &rhs) const { |
| 152 | return id_set == rhs.id_set && rect == rhs.rect; |
| 153 | } |
| 154 | }; |
| 155 | |
| 156 | // Seperates up to a maximum of 64 input rectangles into mutually non- |
| 157 | // overlapping rectangles that cover the exact same area and outputs those non- |
| 158 | // overlapping rectangles. Each output rectangle also includes the set of input |
| 159 | // rectangle indices that overlap the output rectangle encoded in a bitset. For |
| 160 | // example, an output rectangle that overlaps input rectangles in[0], in[1], and |
| 161 | // in[4], the bitset would be (ommitting leading zeroes) 10011. |
Zach Reizner | a281f8f | 2015-10-09 10:02:54 -0700 | [diff] [blame] | 162 | void seperate_frects_64(const std::vector<Rect<float>> &in, |
| 163 | std::vector<RectSet<uint64_t, float>> *out); |
| 164 | void seperate_rects_64(const std::vector<Rect<int>> &in, |
| 165 | std::vector<RectSet<uint64_t, int>> *out); |
Zach Reizner | 15c9ffa | 2015-03-31 17:56:36 -0700 | [diff] [blame] | 166 | |
| 167 | } // namespace seperate_rects |
| 168 | |
| 169 | #endif |