1 /* 2 * Copyright (c) 2025 Shenzhen Kaihong Digital Industry Development 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_SHARING_VIDEO_AUDIO_SYNC_H 17 #define OHOS_SHARING_VIDEO_AUDIO_SYNC_H 18 19 #include <memory> 20 #include "audio_play_controller.h" 21 22 namespace OHOS { 23 namespace Sharing { 24 25 class VideoAudioSync : public std::enable_shared_from_this<VideoAudioSync> { 26 public: 27 VideoAudioSync(); 28 ~VideoAudioSync(); 29 30 bool IsNeedDrop(int64_t videoTimestamp); 31 void SetAudioPlayController(std::shared_ptr<AudioPlayController> audioPlayController); 32 33 private: 34 bool ProcessAVSyncStrategy(int64_t videoTimestamp); 35 36 static constexpr int64_t AUDIO_TOO_LATE_US = 300 * 1000; 37 static constexpr int64_t AUDIO_LATE_US = 100 * 1000; 38 static constexpr int64_t VIDEO_LATE_US = -100 * 1000; 39 static constexpr int64_t VIDEO_TOO_LATE_US = -200 * 1000; 40 static constexpr int64_t DROP_ONE_FRAME_TIME = 1000 * 1000 / 30; 41 42 bool isFirstFrame_ = true; 43 int32_t continueDropCount_ = 0; 44 std::shared_ptr<AudioPlayController> audioPlayController_ = nullptr; 45 }; 46 } // namespace Sharing 47 } // namespace OHOS 48 #endif