1 /*
2  * Copyright (C) 2022 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 ANDROID_HWC_COMPOSER_H
18 #define ANDROID_HWC_COMPOSER_H
19 
20 #include <aidl/android/hardware/graphics/composer3/BnComposer.h>
21 #include <android-base/thread_annotations.h>
22 
23 #include <memory>
24 
25 #include "ComposerClient.h"
26 
27 namespace aidl::android::hardware::graphics::composer3::impl {
28 
29 // This class is basically just the interface to create a client.
30 class Composer : public BnComposer {
31    public:
32     Composer() = default;
33 
34     binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
35 
36     // compser3 api
37     ndk::ScopedAStatus createClient(std::shared_ptr<IComposerClient>* client) override;
38     ndk::ScopedAStatus getCapabilities(std::vector<Capability>* caps) override;
39 
40    protected:
41     ndk::SpAIBinder createBinder() override;
42 
43    private:
44     bool waitForClientDestroyedLocked(std::unique_lock<std::mutex>& lock);
45     void onClientDestroyed();
46 
47     std::mutex mClientMutex;
48     std::weak_ptr<ComposerClient> mClient;
49     std::condition_variable mClientDestroyedCondition;
50 };
51 
52 }  // namespace aidl::android::hardware::graphics::composer3::impl
53 
54 #endif