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   1 /**
   2  * Copyright (c) 2010-2021 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.ipcamera.internal;
  14
  15 import static org.openhab.binding.ipcamera.internal.IpCameraBindingConstants.*;
  16
  17 import java.io.BufferedReader;
  18 import java.io.IOException;
  19 import java.io.InputStream;
  20 import java.io.InputStreamReader;
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.List;
  24 import java.util.concurrent.Executors;
  25 import java.util.concurrent.ScheduledExecutorService;
  26 import java.util.concurrent.TimeUnit;
  27
  28 import org.eclipse.jdt.annotation.NonNullByDefault;
  29 import org.eclipse.jdt.annotation.Nullable;
  30 import org.openhab.binding.ipcamera.internal.IpCameraBindingConstants.FFmpegFormat;
  31 import org.openhab.binding.ipcamera.internal.handler.IpCameraHandler;
  32 import org.openhab.core.library.types.DecimalType;
  33 import org.openhab.core.library.types.OnOffType;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 /**
  38  * The {@link Ffmpeg} class is responsible for handling multiple ffmpeg conversions which are used for many tasks
  39  *
  40  *
  41  * @author Matthew Skinner - Initial contribution
  42  */
  43
  44 @NonNullByDefault
  45 public class Ffmpeg {
  46     private final Logger logger = LoggerFactory.getLogger(getClass());
  47     private IpCameraHandler ipCameraHandler;
  48     private @Nullable Process process = null;
  49     private String ffmpegCommand = "";
  50     private FFmpegFormat format;
  51     private List<String> commandArrayList = new ArrayList<String>();
  52     private IpCameraFfmpegThread ipCameraFfmpegThread = new IpCameraFfmpegThread();
  53     private int keepAlive = 8;
  54     private String password;
  55
  56     public Ffmpeg(IpCameraHandler handle, FFmpegFormat format, String ffmpegLocation, String inputArguments,
  57             String input, String outArguments, String output, String username, String password) {
  58         this.format = format;
  59         this.password = password;
  60         ipCameraHandler = handle;
  61         String altInput = input;
  62         // Input can be snapshots not just rtsp or http
  63         if (!password.isEmpty() && !input.contains("@") && input.contains("rtsp")) {
  64             String credentials = username + ":" + password + "@";
  65             // will not work for https: but currently binding does not use https
  66             altInput = input.substring(0, 7) + credentials + input.substring(7);
  67         }
  68         if (inputArguments.isEmpty()) {
  69             ffmpegCommand = "-i " + altInput + " " + outArguments + " " + output;
  70         } else {
  71             ffmpegCommand = inputArguments + " -i " + altInput + " " + outArguments + " " + output;
  72         }
  73         Collections.addAll(commandArrayList, ffmpegCommand.trim().split("\\s+"));
  74         // ffmpegLocation may have a space in its folder
  75         commandArrayList.add(0, ffmpegLocation);
  76     }
  77
  78     public void setKeepAlive(int numberOfEightSeconds) {
  79         // We poll every 8 seconds due to mjpeg stream requirement.
  80         if (keepAlive == -1 && numberOfEightSeconds > 1) {
  81             return;// When set to -1 this will not auto turn off stream.
  82         }
  83         keepAlive = numberOfEightSeconds;
  84     }
  85
  86     public void checkKeepAlive() {
  87         if (keepAlive == 1) {
  88             stopConverting();
  89         } else if (keepAlive <= -1 && !getIsAlive()) {
  90             logger.warn("HLS stream was not running, restarting it now.");
  91             startConverting();
  92         }
  93         if (keepAlive > 0) {
  94             keepAlive--;
  95         }
  96     }
  97
  98     private class IpCameraFfmpegThread extends Thread {
  99         private ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(2);
 100         public int countOfMotions;
 101
 102         IpCameraFfmpegThread() {
 103             setDaemon(true);
 104         }
 105
 106         private void gifCreated() {
 107             // Without a small delay, Pushover sends no file 10% of time.
 108             ipCameraHandler.setChannelState(CHANNEL_RECORDING_GIF, DecimalType.ZERO);
 109             ipCameraHandler.setChannelState(CHANNEL_GIF_HISTORY_LENGTH,
 110                     new DecimalType(++ipCameraHandler.gifHistoryLength));
 111         }
 112
 113         private void mp4Created() {
 114             ipCameraHandler.setChannelState(CHANNEL_RECORDING_MP4, DecimalType.ZERO);
 115             ipCameraHandler.setChannelState(CHANNEL_MP4_HISTORY_LENGTH,
 116                     new DecimalType(++ipCameraHandler.mp4HistoryLength));
 117         }
 118
 119         @Override
 120         public void run() {
 121             try {
 122                 process = Runtime.getRuntime().exec(commandArrayList.toArray(new String[commandArrayList.size()]));
 123                 Process localProcess = process;
 124                 if (localProcess != null) {
 125                     InputStream errorStream = localProcess.getErrorStream();
 126                     InputStreamReader errorStreamReader = new InputStreamReader(errorStream);
 127                     BufferedReader bufferedReader = new BufferedReader(errorStreamReader);
 128                     String line = null;
 129                     while ((line = bufferedReader.readLine()) != null) {
 130                         logger.debug("{}", line);
 131                         if (format.equals(FFmpegFormat.RTSP_ALARMS)) {
 132                             if (line.contains("lavfi.")) {
 133                                 // When the number of pixels that change are below the noise floor we need to look
 134                                 // across frames to confirm it is motion and not noise.
 135                                 if (countOfMotions < 10) {// Stop increasing otherwise it will take too long to go OFF.
 136                                     countOfMotions++;
 137                                 }
 138                                 if (countOfMotions > 9) {
 139                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 140                                 } else if (countOfMotions > 4 && ipCameraHandler.motionThreshold.intValue() > 10) {
 141                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 142                                 } else if (countOfMotions > 3 && ipCameraHandler.motionThreshold.intValue() > 15) {
 143                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 144                                 } else if (countOfMotions > 2 && ipCameraHandler.motionThreshold.intValue() > 30) {
 145                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 146                                 } else if (countOfMotions > 0 && ipCameraHandler.motionThreshold.intValue() > 89) {
 147                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 148                                     countOfMotions = 4;// Used to debounce the Alarm.
 149                                 }
 150                             } else if (line.contains("speed=")) {
 151                                 if (countOfMotions > 0) {
 152                                     if (ipCameraHandler.motionThreshold.intValue() > 89) {
 153                                         countOfMotions--;
 154                                     }
 155                                     if (ipCameraHandler.motionThreshold.intValue() > 10) {
 156                                         countOfMotions -= 2;
 157                                     } else {
 158                                         countOfMotions -= 4;
 159                                     }
 160                                     if (countOfMotions <= 0) {
 161                                         ipCameraHandler.noMotionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 162                                         countOfMotions = 0;
 163                                     }
 164                                 }
 165                             } else if (line.contains("silence_start")) {
 166                                 ipCameraHandler.noAudioDetected();
 167                             } else if (line.contains("silence_end")) {
 168                                 ipCameraHandler.audioDetected();
 169                             }
 170                         }
 171                     }
 172                 }
 173             } catch (IOException e) {
 174                 logger.warn("An error occured trying to process the messages from FFmpeg.");
 175             } finally {
 176                 switch (format) {
 177                     case GIF:
 178                         threadPool.schedule(this::gifCreated, 800, TimeUnit.MILLISECONDS);
 179                         break;
 180                     case RECORD:
 181                         threadPool.schedule(this::mp4Created, 800, TimeUnit.MILLISECONDS);
 182                         break;
 183                     default:
 184                         break;
 185                 }
 186             }
 187         }
 188     }
 189
 190     public void startConverting() {
 191         if (!ipCameraFfmpegThread.isAlive()) {
 192             ipCameraFfmpegThread = new IpCameraFfmpegThread();
 193             logger.debug("Starting ffmpeg with this command now:{}", ffmpegCommand.replaceAll(password, "********"));
 194             ipCameraFfmpegThread.start();
 195             if (format.equals(FFmpegFormat.HLS)) {
 196                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.ON);
 197             }
 198         }
 199         if (keepAlive != -1) {
 200             keepAlive = 8;
 201         }
 202     }
 203
 204     public boolean getIsAlive() {
 205         Process localProcess = process;
 206         if (localProcess != null) {
 207             return localProcess.isAlive();
 208         }
 209         return false;
 210     }
 211
 212     public void stopConverting() {
 213         if (ipCameraFfmpegThread.isAlive()) {
 214             logger.debug("Stopping ffmpeg {} now when keepalive is:{}", format, keepAlive);
 215             Process localProcess = process;
 216             if (localProcess != null) {
 217                 localProcess.destroyForcibly();
 218             }
 219             if (format.equals(FFmpegFormat.HLS)) {
 220                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.OFF);
 221             }
 222         }
 223     }
 224 }