| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "CaptureRTSPFrame.h" |
| |
| namespace org { |
| namespace apache { |
| namespace nifi { |
| namespace minifi { |
| namespace processors { |
| |
| static core::Property rtspUsername; |
| static core::Property rtspPassword; |
| static core::Property rtspHostname; |
| static core::Property rtspURI; |
| static core::Property captureFrameRate; |
| static core::Property imageEncoding; |
| |
| core::Property CaptureRTSPFrame::RTSPUsername( // NOLINT |
| "RTSP Username", |
| "The username for connecting to the RTSP stream", ""); |
| core::Property CaptureRTSPFrame::RTSPPassword( // NOLINT |
| "RTSP Password", |
| "Password used to connect to the RTSP stream", ""); |
| core::Property CaptureRTSPFrame::RTSPHostname( // NOLINT |
| "RTSP Hostname", |
| "Hostname of the RTSP stream we are trying to connect to", ""); |
| core::Property CaptureRTSPFrame::RTSPURI( // NOLINT |
| "RTSP URI", |
| "URI that should be appended to the RTSP stream hostname", ""); |
| core::Property CaptureRTSPFrame::RTSPPort( // NOLINT |
| "RTSP Port", |
| "Port that should be connected to to receive RTSP Frames", |
| ""); |
| core::Property CaptureRTSPFrame::ImageEncoding( // NOLINT |
| "Image Encoding", |
| "The encoding that should be applied the the frame images captured from the RTSP stream", |
| ".jpg" |
| ); |
| |
| core::Relationship CaptureRTSPFrame::Success( // NOLINT |
| "success", |
| "Successful capture of RTSP frame"); |
| core::Relationship CaptureRTSPFrame::Failure( // NOLINT |
| "failure", |
| "Failures to capture RTSP frame"); |
| |
| void CaptureRTSPFrame::initialize() { |
| std::set<core::Property> properties; |
| properties.insert(RTSPUsername); |
| properties.insert(RTSPPassword); |
| properties.insert(RTSPHostname); |
| properties.insert(RTSPPort); |
| properties.insert(RTSPURI); |
| properties.insert(ImageEncoding); |
| setSupportedProperties(std::move(properties)); |
| |
| std::set<core::Relationship> relationships; |
| relationships.insert(Success); |
| relationships.insert(Failure); |
| setSupportedRelationships(std::move(relationships)); |
| } |
| |
| void CaptureRTSPFrame::onSchedule(core::ProcessContext *context, core::ProcessSessionFactory *sessionFactory) { |
| |
| std::string value; |
| |
| if (context->getProperty(RTSPUsername.getName(), value)) { |
| rtsp_username_ = value; |
| } |
| if (context->getProperty(RTSPPassword.getName(), value)) { |
| rtsp_password_ = value; |
| } |
| if (context->getProperty(RTSPHostname.getName(), value)) { |
| rtsp_host_ = value; |
| } |
| if (context->getProperty(RTSPPort.getName(), value)) { |
| rtsp_port_ = value; |
| } |
| if (context->getProperty(RTSPURI.getName(), value)) { |
| rtsp_uri_ = value; |
| } |
| if (context->getProperty(ImageEncoding.getName(), value)) { |
| image_encoding_ = value; |
| } |
| |
| logger_->log_trace("CaptureRTSPFrame processor scheduled"); |
| |
| std::string rtspURI = "rtsp://"; |
| rtspURI.append(rtsp_username_); |
| rtspURI.append(":"); |
| rtspURI.append(rtsp_password_); |
| rtspURI.append("@"); |
| rtspURI.append(rtsp_host_); |
| if (!rtsp_port_.empty()) { |
| rtspURI.append(":"); |
| rtspURI.append(rtsp_port_); |
| } |
| |
| if (!rtsp_uri_.empty()) { |
| rtspURI.append("/"); |
| rtspURI.append(rtsp_uri_); |
| } |
| |
| rtsp_url_ = rtspURI; |
| |
| } |
| |
| void CaptureRTSPFrame::onTrigger(const std::shared_ptr<core::ProcessContext> &context, |
| const std::shared_ptr<core::ProcessSession> &session) { |
| |
| std::unique_lock<std::mutex> lock(mutex_, std::try_to_lock); |
| if (!lock.owns_lock()) { |
| logger_->log_info("Cannot process due to an unfinished onTrigger"); |
| context->yield(); |
| return; |
| } |
| |
| try { |
| video_capture_.open(rtsp_url_); |
| video_backend_driver_ = video_capture_.getBackendName(); |
| } catch (const cv::Exception &e) { |
| logger_->log_error("Unable to open RTSP stream: %s", e.what()); |
| context->yield(); |
| return; |
| } catch (...) { |
| logger_->log_error("Unable to open RTSP stream: unhandled exception"); |
| context->yield(); |
| return; |
| } |
| |
| auto flow_file = session->create(); |
| cv::Mat frame; |
| // retrieve a frame of your source |
| if (video_capture_.read(frame)) { |
| if (!frame.empty()) { |
| CaptureRTSPFrameWriteCallback write_cb(frame, image_encoding_); |
| |
| auto t = std::time(nullptr); |
| auto tm = *std::localtime(&t); |
| |
| std::ostringstream oss; |
| oss << std::put_time(&tm, "%d-%m-%Y %H-%M-%S"); |
| auto filename = oss.str(); |
| filename.append(image_encoding_); |
| |
| session->putAttribute(flow_file, "filename", filename); |
| session->putAttribute(flow_file, "video.backend.driver", video_backend_driver_); |
| |
| session->write(flow_file, &write_cb); |
| session->transfer(flow_file, Success); |
| logger_->log_info("A frame is captured"); |
| } else { |
| logger_->log_error("Empty Mat frame received from capture"); |
| session->transfer(flow_file, Failure); |
| } |
| } else { |
| logger_->log_error("Unable to read from capture handle on RTSP stream"); |
| session->transfer(flow_file, Failure); |
| } |
| |
| } |
| |
| void CaptureRTSPFrame::notifyStop() { |
| } |
| |
| } /* namespace processors */ |
| } /* namespace minifi */ |
| } /* namespace nifi */ |
| } /* namespace apache */ |
| } /* namespace org */ |