1 /* 2 * Copyright (c) 2022 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 OHOS_FOCUS_SESSION_STRATEGY_H 17 #define OHOS_FOCUS_SESSION_STRATEGY_H 18 19 #include <functional> 20 #include <map> 21 #include <memory> 22 #include "audio_stream_manager.h" 23 #include "audio_adapter.h" 24 25 namespace OHOS::AVSession { 26 class FocusSessionStrategy { 27 public: 28 using StreamUsage = AudioStandard::StreamUsage; 29 struct FocusSessionChangeInfo { 30 int32_t uid {}; 31 StreamUsage streamUsage {}; 32 }; 33 using FocusSessionChangeCallback = std::function<void(const FocusSessionChangeInfo&, bool)>; 34 using FocusSessionSelector = std::function<bool(const FocusSessionChangeInfo&)>; 35 36 FocusSessionStrategy(); 37 ~FocusSessionStrategy(); 38 39 void Init(); 40 41 void RegisterFocusSessionChangeCallback(const FocusSessionChangeCallback& callback); 42 void RegisterFocusSessionSelector(const FocusSessionSelector& selector); 43 44 private: 45 void HandleAudioRenderStateChangeEvent(const AudioRendererChangeInfos& infos); 46 47 bool IsFocusSession(const int32_t uid); 48 bool CheckFocusSessionStop(const int32_t uid); 49 void UpdateFocusSession(const int32_t uid); 50 void DelayStopFocusSession(const int32_t uid); 51 void ProcAudioRenderChange(const AudioRendererChangeInfos& infos); 52 53 FocusSessionChangeCallback callback_; 54 FocusSessionSelector selector_; 55 std::shared_ptr<AudioStandard::AudioRendererStateChangeCallback> audioRendererStateChangeCallback_; 56 std::recursive_mutex stateLock_; 57 std::map<int32_t, int32_t> lastStates_; 58 std::map<int32_t, int32_t> currentStates_; 59 const int32_t cancelTimeout = 5000; 60 const int32_t runningState = 2; 61 const int32_t stopState = 0; 62 const int32_t ancoUid = 1041; 63 const std::vector<AudioStandard::StreamUsage> ALLOWED_ANCO_STREAM_USAGE { 64 AudioStandard::STREAM_USAGE_MUSIC, 65 AudioStandard::STREAM_USAGE_MOVIE, 66 AudioStandard::STREAM_USAGE_VOICE_COMMUNICATION 67 }; 68 }; 69 } 70 #endif // OHOS_FOCUS_SESSION_STRATEGY_H