1 /*
2  * Copyright 2019 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 #pragma once
18 
19 #include <binder/Parcelable.h>
20 
21 #include <unordered_map>
22 
23 namespace android {
24 
25 enum {
26     METADATA_OWNER_UID = 1,
27     METADATA_WINDOW_TYPE = 2,
28     METADATA_TASK_ID = 3,
29     METADATA_MOUSE_CURSOR = 4,
30 };
31 
32 struct LayerMetadata : public Parcelable {
33     std::unordered_map<uint32_t, std::vector<uint8_t>> mMap;
34 
35     LayerMetadata();
36     LayerMetadata(const LayerMetadata& other);
37     LayerMetadata(LayerMetadata&& other);
38     explicit LayerMetadata(std::unordered_map<uint32_t, std::vector<uint8_t>> map);
39     LayerMetadata& operator=(const LayerMetadata& other);
40     LayerMetadata& operator=(LayerMetadata&& other);
41 
42     // Merges other into this LayerMetadata. If eraseEmpty is true, any entries in
43     // in this whose keys are paired with empty values in other will be erased.
44     bool merge(const LayerMetadata& other, bool eraseEmpty = false);
45 
46     status_t writeToParcel(Parcel* parcel) const override;
47     status_t readFromParcel(const Parcel* parcel) override;
48 
49     bool has(uint32_t key) const;
50     int32_t getInt32(uint32_t key, int32_t fallback) const;
51     void setInt32(uint32_t key, int32_t value);
52 
53     std::string itemToString(uint32_t key, const char* separator) const;
54 };
55 
56 } // namespace android
57