1 /*
2  * Copyright (C) 2018 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_hardware_audio_common_EffectMap_H_
18 #define android_hardware_audio_common_EffectMap_H_
19 
20 #include <mutex>
21 
22 #include <hardware/audio_effect.h>
23 #include <utils/KeyedVector.h>
24 #include <utils/Singleton.h>
25 
26 namespace android {
27 
28 // This class needs to be in 'android' ns because Singleton macros require that.
29 class EffectMap : public Singleton<EffectMap> {
30    public:
31     static const uint64_t INVALID_ID;
32 
33     uint64_t add(effect_handle_t handle);
34     effect_handle_t get(const uint64_t& id);
35     void remove(effect_handle_t handle);
36 
37    private:
38     static uint64_t makeUniqueId();
39 
40     std::mutex mLock;
41     KeyedVector<uint64_t, effect_handle_t> mEffects;
42 };
43 
44 }  // namespace android
45 
46 #endif  // android_hardware_audio_common_EffectMap_H_
47