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 "BootParameters.h"
24 
25 #include <boot_action/boot_action.h>  // libandroidthings native API.
26 #include <utils/RefBase.h>
27 
28 namespace android {
29 
30 class BootAction : public RefBase {
31 public:
32     ~BootAction();
33 
34     // libraryPath is a fully qualified path to the target .so library.
35     bool init(const std::string& libraryPath,
36               const std::unique_ptr<BootParameters>& bootParameters);
37 
38     // The animation is going to start playing partNumber for the playCount'th
39     // time, update the action as needed.
40     // This is run in the same thread as the boot animation,
41     // you must not block here.
42     void startPart(int partNumber, int playCount);
43 
44     // Shutdown the boot action, this will be called shortly before the
45     // process is shut down to allow time for cleanup.
46     void shutdown();
47 
48 private:
49     typedef bool (*libInit)(const ABootActionParameter* parameters,
50                             size_t numParameters);
51     typedef void (*libStartPart)(int partNumber, int playNumber);
52     typedef void (*libShutdown)();
53 
54     bool loadSymbol(const char* symbol, void** loaded);
55 
56     void* mLibHandle = nullptr;
57     libInit mLibInit = nullptr;
58     libStartPart mLibStartPart = nullptr;
59     libShutdown mLibShutdown = nullptr;
60 
61     // Called only if the boot is silent.
62     libInit mLibSilentBoot = nullptr;
63 };
64 
65 }  // namespace android
66 
67 
68 #endif  // _BOOTANIMATION_BOOTACTION_H
69