1 /* 2 * Copyright (c) 2021 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_ICAMERA_SOURCE_DATA_PROCESS_PRODUCER_H 17 #define OHOS_ICAMERA_SOURCE_DATA_PROCESS_PRODUCER_H 18 19 #include <condition_variable> 20 #include <mutex> 21 #include <queue> 22 #include <thread> 23 24 #include "data_buffer.h" 25 #include "event_handler.h" 26 #include "v1_0/id_camera_provider.h" 27 28 namespace OHOS { 29 namespace DistributedHardware { 30 using namespace OHOS::HDI::DistributedCamera::V1_0; 31 class DCameraStreamDataProcessProducer { 32 public: 33 typedef enum { 34 DCAMERA_PRODUCER_STATE_STOP = 0, 35 DCAMERA_PRODUCER_STATE_START = 1, 36 } DCameraProducerState; 37 38 DCameraStreamDataProcessProducer(std::string devId, std::string dhId, int32_t streamId, DCStreamType streamType); 39 ~DCameraStreamDataProcessProducer(); 40 void Start(); 41 void Stop(); 42 void FeedStream(const std::shared_ptr<DataBuffer>& buffer); 43 void UpdateInterval(uint32_t fps); 44 45 private: 46 void StartEvent(); 47 void LooperContinue(); 48 void LooperSnapShot(); 49 int32_t FeedStreamToDriver(const DHBase& dhBase, const std::shared_ptr<DataBuffer>& buffer); 50 int32_t CheckSharedMemory(const DCameraBuffer& sharedMemory, const std::shared_ptr<DataBuffer>& buffer); 51 52 const uint32_t DCAMERA_PRODUCER_MAX_BUFFER_SIZE = 30; 53 const uint32_t DCAMERA_PRODUCER_RETRY_SLEEP_MS = 500; 54 55 private: 56 std::string devId_; 57 std::string dhId_; 58 59 std::thread eventThread_; 60 std::thread producerThread_; 61 std::condition_variable eventCon_; 62 std::condition_variable producerCon_; 63 std::mutex bufferMutex_; 64 std::mutex eventMutex_; 65 std::queue<std::shared_ptr<DataBuffer>> buffers_; 66 DCameraProducerState state_; 67 uint32_t interval_; 68 int32_t streamId_; 69 DCStreamType streamType_; 70 std::shared_ptr<AppExecFwk::EventHandler> eventHandler_; 71 72 sptr<IDCameraProvider> camHdiProvider_; 73 }; 74 } // namespace DistributedHardware 75 } // namespace OHOS 76 #endif // OHOS_ICAMERA_SOURCE_DATA_PROCESS_PRODUCER_H 77