1 /* 2 * Copyright (c) 2024 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 VIDEO_PROCESSING_CALLBACK_NATIVE_H 17 #define VIDEO_PROCESSING_CALLBACK_NATIVE_H 18 19 #include <atomic> 20 #include <functional> 21 #include <mutex> 22 23 #include "video_processing_types.h" 24 25 namespace OHOS { 26 namespace Media { 27 namespace VideoProcessingEngine { 28 /** 29 * Implementation for video processing callback CAPI. 30 */ 31 class VideoProcessingCallbackNative { 32 public: 33 VideoProcessingCallbackNative() = default; 34 virtual ~VideoProcessingCallbackNative() = default; 35 VideoProcessingCallbackNative(const VideoProcessingCallbackNative&) = delete; 36 VideoProcessingCallbackNative& operator=(const VideoProcessingCallbackNative&) = delete; 37 VideoProcessingCallbackNative(VideoProcessingCallbackNative&&) = delete; 38 VideoProcessingCallbackNative& operator=(VideoProcessingCallbackNative&&) = delete; 39 40 VideoProcessing_ErrorCode BindOnError(OH_VideoProcessingCallback_OnError onError); 41 VideoProcessing_ErrorCode BindOnState(OH_VideoProcessingCallback_OnState onState); 42 VideoProcessing_ErrorCode BindOnNewOutputBuffer(OH_VideoProcessingCallback_OnNewOutputBuffer onNewOutputBuffer); 43 44 bool IsValid() const; 45 bool IsModifiable() const; 46 void LockModifiers(); 47 void UnlockModifiers(); 48 bool HasOnNewOutputBuffer() const; 49 50 virtual void OnError(OH_VideoProcessing* instance, VideoProcessing_ErrorCode errorCode, void* userData); 51 virtual void OnState(OH_VideoProcessing* instance, VideoProcessing_State state, void* userData); 52 virtual void OnNewOutputBuffer(OH_VideoProcessing* instance, uint32_t index, void* userData); 53 54 protected: 55 VideoProcessing_ErrorCode BindFunction(std::function<void()>&& functionBinder); 56 57 mutable std::mutex lock_{}; 58 // Guarded by lock_ begin 59 std::atomic<bool> isValid_{false}; 60 std::atomic<bool> isModifiable_{true}; 61 OH_VideoProcessingCallback_OnError onError_{}; 62 OH_VideoProcessingCallback_OnState onState_{}; 63 OH_VideoProcessingCallback_OnNewOutputBuffer onNewOutputBuffer_{}; 64 // Guarded by lock_ end 65 }; 66 } // namespace VideoProcessingEngine 67 } // namespace Media 68 } // namespace OHOS 69 70 #endif // VIDEO_PROCESSING_CALLBACK_NATIVE_H 71