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   1 /**
   2  * Copyright (c) 2010-2023 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.net.URLEncoder;
  22 import java.nio.charset.StandardCharsets;
  23 import java.util.ArrayList;
  24 import java.util.Collections;
  25 import java.util.List;
  26 import java.util.concurrent.Executors;
  27 import java.util.concurrent.ScheduledExecutorService;
  28 import java.util.concurrent.TimeUnit;
  29
  30 import org.eclipse.jdt.annotation.NonNullByDefault;
  31 import org.eclipse.jdt.annotation.Nullable;
  32 import org.openhab.binding.ipcamera.internal.IpCameraBindingConstants.FFmpegFormat;
  33 import org.openhab.binding.ipcamera.internal.handler.IpCameraHandler;
  34 import org.openhab.core.library.types.DecimalType;
  35 import org.openhab.core.library.types.OnOffType;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38
  39 /**
  40  * The {@link Ffmpeg} class is responsible for handling multiple ffmpeg conversions which are used for many tasks
  41  *
  42  *
  43  * @author Matthew Skinner - Initial contribution
  44  */
  45
  46 @NonNullByDefault
  47 public class Ffmpeg {
  48     private final Logger logger = LoggerFactory.getLogger(getClass());
  49     private IpCameraHandler ipCameraHandler;
  50     private @Nullable Process process = null;
  51     private String ffmpegCommand = "";
  52     private FFmpegFormat format;
  53     private List<String> commandArrayList = new ArrayList<String>();
  54     private IpCameraFfmpegThread ipCameraFfmpegThread = new IpCameraFfmpegThread();
  55     private int keepAlive = 8;
  56     private String password;
  57     private Boolean notFrozen = true;
  58
  59     public Ffmpeg(IpCameraHandler handle, FFmpegFormat format, String ffmpegLocation, String inputArguments,
  60             String input, String outArguments, String output, String username, String password) {
  61         this.format = format;
  62         this.password = URLEncoder.encode(password, StandardCharsets.UTF_8);
  63
  64         ipCameraHandler = handle;
  65         String altInput = input;
  66         // Input can be snapshots not just rtsp or http
  67         if (!password.isEmpty() && !input.contains("@") && input.contains("rtsp")) {
  68             String credentials = username + ":" + this.password + "@";
  69             // will not work for https: but currently binding does not use https
  70             altInput = input.substring(0, 7) + credentials + input.substring(7);
  71         }
  72         if (inputArguments.isEmpty()) {
  73             ffmpegCommand = "-i " + altInput + " " + outArguments + " " + output;
  74         } else {
  75             ffmpegCommand = inputArguments + " -i " + altInput + " " + outArguments + " " + output;
  76         }
  77         Collections.addAll(commandArrayList, ffmpegCommand.trim().split("\\s+"));
  78         // ffmpegLocation may have a space in its folder
  79         commandArrayList.add(0, ffmpegLocation);
  80     }
  81
  82     public void setKeepAlive(int numberOfEightSeconds) {
  83         // We poll every 8 seconds due to mjpeg stream requirement.
  84         if (keepAlive == -1 && numberOfEightSeconds > 1) {
  85             return;// When set to -1 this will not auto turn off stream.
  86         }
  87         keepAlive = numberOfEightSeconds;
  88     }
  89
  90     public void checkKeepAlive() {
  91         if (keepAlive == 1) {
  92             stopConverting();
  93         } else if (keepAlive <= -1 && !getIsAlive()) {
  94             logger.warn("HLS stream was not running, restarting it now.");
  95             startConverting();
  96         }
  97         if (keepAlive > 0) {
  98             keepAlive--;
  99         }
 100     }
 101
 102     private class IpCameraFfmpegThread extends Thread {
 103         private ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(1);
 104         public int countOfMotions;
 105
 106         IpCameraFfmpegThread() {
 107             setDaemon(true);
 108         }
 109
 110         private void gifCreated() {
 111             // Without a small delay, Pushover sends no file 10% of time.
 112             ipCameraHandler.setChannelState(CHANNEL_RECORDING_GIF, DecimalType.ZERO);
 113             ipCameraHandler.setChannelState(CHANNEL_GIF_HISTORY_LENGTH,
 114                     new DecimalType(++ipCameraHandler.gifHistoryLength));
 115         }
 116
 117         private void mp4Created() {
 118             ipCameraHandler.setChannelState(CHANNEL_RECORDING_MP4, DecimalType.ZERO);
 119             ipCameraHandler.setChannelState(CHANNEL_MP4_HISTORY_LENGTH,
 120                     new DecimalType(++ipCameraHandler.mp4HistoryLength));
 121         }
 122
 123         @Override
 124         public void run() {
 125             try {
 126                 process = Runtime.getRuntime().exec(commandArrayList.toArray(new String[commandArrayList.size()]));
 127                 Process localProcess = process;
 128                 if (localProcess != null) {
 129                     InputStream errorStream = localProcess.getErrorStream();
 130                     InputStreamReader errorStreamReader = new InputStreamReader(errorStream);
 131                     BufferedReader bufferedReader = new BufferedReader(errorStreamReader);
 132                     String line = null;
 133                     while ((line = bufferedReader.readLine()) != null) {
 134                         logger.trace("{}", line);
 135                         switch (format) {
 136                             case RTSP_ALARMS:
 137                                 if (line.contains("lavfi.")) {
 138                                     // When the number of pixels that change are below the noise floor we need to look
 139                                     // across frames to confirm it is motion and not noise.
 140                                     if (countOfMotions < 10) {// Stop increasing otherwise it takes too long to go OFF
 141                                         countOfMotions++;
 142                                     }
 143                                     if (countOfMotions > 9) {
 144                                         ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 145                                     } else if (countOfMotions > 4 && ipCameraHandler.motionThreshold.intValue() > 10) {
 146                                         ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 147                                     } else if (countOfMotions > 3 && ipCameraHandler.motionThreshold.intValue() > 15) {
 148                                         ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 149                                     } else if (countOfMotions > 2 && ipCameraHandler.motionThreshold.intValue() > 30) {
 150                                         ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 151                                     } else if (countOfMotions > 0 && ipCameraHandler.motionThreshold.intValue() > 89) {
 152                                         ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 153                                         countOfMotions = 4;// Used to debounce the Alarm.
 154                                     }
 155                                 } else if (line.contains("speed=")) {
 156                                     if (countOfMotions > 0) {
 157                                         if (ipCameraHandler.motionThreshold.intValue() > 89) {
 158                                             countOfMotions--;
 159                                         }
 160                                         if (ipCameraHandler.motionThreshold.intValue() > 10) {
 161                                             countOfMotions -= 2;
 162                                         } else {
 163                                             countOfMotions -= 4;
 164                                         }
 165                                         if (countOfMotions <= 0) {
 166                                             ipCameraHandler.noMotionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 167                                             countOfMotions = 0;
 168                                         }
 169                                     }
 170                                 } else if (line.contains("silence_start")) {
 171                                     ipCameraHandler.noAudioDetected();
 172                                 } else if (line.contains("silence_end")) {
 173                                     ipCameraHandler.audioDetected();
 174                                 }
 175                             case MJPEG:
 176                             case SNAPSHOT:
 177                                 notFrozen = true;// RTSP_ALARMS, MJPEG and SNAPSHOT all set this to true, no break.
 178                                 break;
 179                         }
 180                     }
 181                 }
 182             } catch (IOException e) {
 183                 logger.warn("An IO error occured trying to start FFmpeg:{}", e.getMessage());
 184             } finally {
 185                 switch (format) {
 186                     case GIF:
 187                         threadPool.schedule(this::gifCreated, 800, TimeUnit.MILLISECONDS);
 188                         break;
 189                     case RECORD:
 190                         threadPool.schedule(this::mp4Created, 800, TimeUnit.MILLISECONDS);
 191                         break;
 192                     default:
 193                         break;
 194                 }
 195             }
 196         }
 197     }
 198
 199     public void startConverting() {
 200         if (!ipCameraFfmpegThread.isAlive()) {
 201             ipCameraFfmpegThread = new IpCameraFfmpegThread();
 202             if (!password.isEmpty()) {
 203                 logger.debug("Starting ffmpeg with this command now:{}",
 204                         ffmpegCommand.replaceAll(password, "********"));
 205             } else {
 206                 logger.debug("Starting ffmpeg with this command now:{}", ffmpegCommand);
 207             }
 208             ipCameraFfmpegThread.start();
 209             if (format.equals(FFmpegFormat.HLS)) {
 210                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.ON);
 211             }
 212         }
 213         if (keepAlive != -1) {
 214             keepAlive = 8;
 215         }
 216     }
 217
 218     public boolean getIsAlive() {
 219         Process localProcess = process;
 220         if (localProcess != null) {
 221             if (localProcess.isAlive() && notFrozen) {
 222                 notFrozen = false; // Any process output will set this back to true before next check.
 223                 return true;
 224             }
 225         }
 226         return false;
 227     }
 228
 229     public void stopConverting() {
 230         if (ipCameraFfmpegThread.isAlive()) {
 231             logger.debug("Stopping ffmpeg {} now when keepalive is:{}", format, keepAlive);
 232             Process localProcess = process;
 233             if (localProcess != null) {
 234                 localProcess.destroyForcibly();
 235                 process = null;
 236             }
 237             if (format.equals(FFmpegFormat.HLS)) {
 238                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.OFF);
 239             }
 240         }
 241     }
 242 }