1 /* 2 * Copyright (c) 2024-2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef MULTIMEDIA_AUDIO_VOLUME_MANAGER_CALLBACK_H 17 #define MULTIMEDIA_AUDIO_VOLUME_MANAGER_CALLBACK_H 18 #include "audio_group_manager.h" 19 #include "audio_policy_interface.h" 20 #include "audio_system_manager.h" 21 #include "multimedia_audio_ffi.h" 22 23 namespace OHOS { 24 namespace AudioStandard { 25 class CjVolumeKeyEventCallback : public VolumeKeyEventCallback { 26 public: 27 CjVolumeKeyEventCallback() = default; 28 virtual ~CjVolumeKeyEventCallback() = default; 29 30 void RegisterFunc(std::function<void(CVolumeEvent)> cjCallback); 31 void OnVolumeKeyEvent(VolumeEvent volumeEvent) override; OnVolumeDegreeEvent(VolumeEvent volumeEvent)32 void OnVolumeDegreeEvent(VolumeEvent volumeEvent) override {} 33 34 private: 35 std::function<void(CVolumeEvent)> func_ {}; 36 std::mutex cbMutex_; 37 }; 38 } // namespace AudioStandard 39 } // namespace OHOS 40 #endif // MULTIMEDIA_AUDIO_VOLUME_MANAGER_CALLBACK_H 41