1 /*
2  * Copyright (C) 2017 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 _BOOTANIMATION_BOOTACTION_H
18 #define _BOOTANIMATION_BOOTACTION_H
19 
20 #include <string>
21 #include <vector>
22 
23 #include <boot_action/boot_action.h>  // libandroidthings native API.
24 #include <utils/RefBase.h>
25 
26 namespace android {
27 
28 class BootAction : public RefBase {
29 public:
30     ~BootAction();
31 
32     // libraryPath is a fully qualified path to the target .so library.
33     bool init(const std::string& libraryPath,
34               const std::vector<ABootActionParameter>& parameters);
35 
36     // The animation is going to start playing partNumber for the playCount'th
37     // time, update the action as needed.
38     // This is run in the same thread as the boot animation,
39     // you must not block here.
40     void startPart(int partNumber, int playCount);
41 
42     // Shutdown the boot action, this will be called shortly before the
43     // process is shut down to allow time for cleanup.
44     void shutdown();
45 
46 private:
47     typedef bool (*libInit)(const ABootActionParameter* parameters,
48                             size_t num_parameters);
49     typedef void (*libStartPart)(int partNumber, int playNumber);
50     typedef void (*libShutdown)();
51 
52     bool loadSymbol(const char* symbol, void** loaded);
53 
54     void* mLibHandle = nullptr;
55     libInit mLibInit = nullptr;
56     libStartPart mLibStartPart = nullptr;
57     libShutdown mLibShutdown = nullptr;
58 };
59 
60 }  // namespace android
61 
62 
63 #endif  // _BOOTANIMATION_BOOTACTION_H
64