1 /*
2  * Copyright (C) 2020 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 #include <memory>
19 #include PATH(android/hardware/audio/FILE_VERSION/IDevicesFactory.h)
20 #include <dlfcn.h>
21 
22 namespace android {
23 namespace hardware {
24 namespace audio {
25 namespace CPP_VERSION {
26 namespace implementation {
27 
28 using ::android::hardware::hidl_string;
29 using ::android::hardware::Return;
30 using namespace ::android::hardware::audio::CPP_VERSION;
31 
32 struct DevicesFactory : public IDevicesFactory {
33     DevicesFactory();
34 
35     Return<void> openDevice(const hidl_string& device, openDevice_cb _hidl_cb) override;
36     Return<void> openPrimaryDevice(openPrimaryDevice_cb _hidl_cb) override;
37 #if MAJOR_VERSION == 7 && MINOR_VERSION == 1
38     Return<void> openDevice_7_1(const hidl_string& device, openDevice_7_1_cb _hidl_cb) override;
39     Return<void> openPrimaryDevice_7_1(openPrimaryDevice_7_1_cb _hidl_cb) override;
40 #endif
41 
42 private:
43     struct DLDeleter {
operatorDevicesFactory::DLDeleter44         void operator()(void* dl) const {
45             ::dlclose(dl);
46         }
47     };
48 
49     std::unique_ptr<void, DLDeleter> mLegacyLib;
50     std::unique_ptr<IDevicesFactory> mLegacyFactory;
51 };
52 
53 }  // namespace implementation
54 }  // namespace CPP_VERSION
55 }  // namespace audio
56 }  // namespace hardware
57 }  // namespace android
58