1 /* 2 * Copyright (c) 2025-2025 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 #ifndef AUDIO_POLICY_ASYNC_ACTION_HANDLER_H 16 #define AUDIO_POLICY_ASYNC_ACTION_HANDLER_H 17 18 #include <mutex> 19 #include "singleton.h" 20 #include "event_handler.h" 21 #include "event_runner.h" 22 23 namespace OHOS { 24 namespace AudioStandard { 25 26 // Priority for the Action 27 enum class ActionPriority : uint32_t { 28 // Action that should be distributed at once if possible. 29 IMMEDIATE = 0, 30 // High priority action, sorted by handle time, should be distributed before low priority action. 31 HIGH, 32 // Normal action, sorted by handle time. 33 LOW, 34 }; 35 36 class PolicyAsyncAction { 37 public: 38 virtual void Exec() = 0; 39 virtual ~PolicyAsyncAction() = default; 40 }; 41 42 struct AsyncActionDesc { 43 std::shared_ptr<PolicyAsyncAction> action; 44 int64_t delayTimeMs = 0; // Process the action after 'delayTimeMs' milliseconds. 45 ActionPriority priority = ActionPriority::LOW; 46 }; 47 48 class AudioPolicyAsyncActionHandler : public AppExecFwk::EventHandler { 49 DECLARE_DELAYED_SINGLETON(AudioPolicyAsyncActionHandler) 50 public: 51 bool PostAsyncAction(const AsyncActionDesc &desc); 52 53 private: 54 void ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event) override; 55 56 private: 57 std::mutex actionMutex_; 58 }; 59 } // namespace AudioStandard 60 } // namespace OHOS 61 #endif // AUDIO_POLICY_ASYNC_ACTION_HANDLER_H 62