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   1 /**
   2  * Copyright (c) 2010-2022 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
  58     public Ffmpeg(IpCameraHandler handle, FFmpegFormat format, String ffmpegLocation, String inputArguments,
  59             String input, String outArguments, String output, String username, String password) {
  60         this.format = format;
  61         this.password = URLEncoder.encode(password, StandardCharsets.UTF_8);
  62
  63         ipCameraHandler = handle;
  64         String altInput = input;
  65         // Input can be snapshots not just rtsp or http
  66         if (!password.isEmpty() && !input.contains("@") && input.contains("rtsp")) {
  67             String credentials = username + ":" + this.password + "@";
  68             // will not work for https: but currently binding does not use https
  69             altInput = input.substring(0, 7) + credentials + input.substring(7);
  70         }
  71         if (inputArguments.isEmpty()) {
  72             ffmpegCommand = "-i " + altInput + " " + outArguments + " " + output;
  73         } else {
  74             ffmpegCommand = inputArguments + " -i " + altInput + " " + outArguments + " " + output;
  75         }
  76         Collections.addAll(commandArrayList, ffmpegCommand.trim().split("\\s+"));
  77         // ffmpegLocation may have a space in its folder
  78         commandArrayList.add(0, ffmpegLocation);
  79     }
  80
  81     public void setKeepAlive(int numberOfEightSeconds) {
  82         // We poll every 8 seconds due to mjpeg stream requirement.
  83         if (keepAlive == -1 && numberOfEightSeconds > 1) {
  84             return;// When set to -1 this will not auto turn off stream.
  85         }
  86         keepAlive = numberOfEightSeconds;
  87     }
  88
  89     public void checkKeepAlive() {
  90         if (keepAlive == 1) {
  91             stopConverting();
  92         } else if (keepAlive <= -1 && !getIsAlive()) {
  93             logger.warn("HLS stream was not running, restarting it now.");
  94             startConverting();
  95         }
  96         if (keepAlive > 0) {
  97             keepAlive--;
  98         }
  99     }
 100
 101     private class IpCameraFfmpegThread extends Thread {
 102         private ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(1);
 103         public int countOfMotions;
 104
 105         IpCameraFfmpegThread() {
 106             setDaemon(true);
 107         }
 108
 109         private void gifCreated() {
 110             // Without a small delay, Pushover sends no file 10% of time.
 111             ipCameraHandler.setChannelState(CHANNEL_RECORDING_GIF, DecimalType.ZERO);
 112             ipCameraHandler.setChannelState(CHANNEL_GIF_HISTORY_LENGTH,
 113                     new DecimalType(++ipCameraHandler.gifHistoryLength));
 114         }
 115
 116         private void mp4Created() {
 117             ipCameraHandler.setChannelState(CHANNEL_RECORDING_MP4, DecimalType.ZERO);
 118             ipCameraHandler.setChannelState(CHANNEL_MP4_HISTORY_LENGTH,
 119                     new DecimalType(++ipCameraHandler.mp4HistoryLength));
 120         }
 121
 122         @Override
 123         public void run() {
 124             try {
 125                 process = Runtime.getRuntime().exec(commandArrayList.toArray(new String[commandArrayList.size()]));
 126                 Process localProcess = process;
 127                 if (localProcess != null) {
 128                     InputStream errorStream = localProcess.getErrorStream();
 129                     InputStreamReader errorStreamReader = new InputStreamReader(errorStream);
 130                     BufferedReader bufferedReader = new BufferedReader(errorStreamReader);
 131                     String line = null;
 132                     while ((line = bufferedReader.readLine()) != null) {
 133                         logger.debug("{}", line);
 134                         if (format.equals(FFmpegFormat.RTSP_ALARMS)) {
 135                             if (line.contains("lavfi.")) {
 136                                 // When the number of pixels that change are below the noise floor we need to look
 137                                 // across frames to confirm it is motion and not noise.
 138                                 if (countOfMotions < 10) {// Stop increasing otherwise it will take too long to go OFF.
 139                                     countOfMotions++;
 140                                 }
 141                                 if (countOfMotions > 9) {
 142                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 143                                 } else if (countOfMotions > 4 && ipCameraHandler.motionThreshold.intValue() > 10) {
 144                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 145                                 } else if (countOfMotions > 3 && ipCameraHandler.motionThreshold.intValue() > 15) {
 146                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 147                                 } else if (countOfMotions > 2 && ipCameraHandler.motionThreshold.intValue() > 30) {
 148                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 149                                 } else if (countOfMotions > 0 && ipCameraHandler.motionThreshold.intValue() > 89) {
 150                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 151                                     countOfMotions = 4;// Used to debounce the Alarm.
 152                                 }
 153                             } else if (line.contains("speed=")) {
 154                                 if (countOfMotions > 0) {
 155                                     if (ipCameraHandler.motionThreshold.intValue() > 89) {
 156                                         countOfMotions--;
 157                                     }
 158                                     if (ipCameraHandler.motionThreshold.intValue() > 10) {
 159                                         countOfMotions -= 2;
 160                                     } else {
 161                                         countOfMotions -= 4;
 162                                     }
 163                                     if (countOfMotions <= 0) {
 164                                         ipCameraHandler.noMotionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 165                                         countOfMotions = 0;
 166                                     }
 167                                 }
 168                             } else if (line.contains("silence_start")) {
 169                                 ipCameraHandler.noAudioDetected();
 170                             } else if (line.contains("silence_end")) {
 171                                 ipCameraHandler.audioDetected();
 172                             }
 173                         }
 174                     }
 175                 }
 176             } catch (IOException e) {
 177                 logger.warn("An IO error occured trying to start FFmpeg:{}", e.getMessage());
 178             } finally {
 179                 switch (format) {
 180                     case GIF:
 181                         threadPool.schedule(this::gifCreated, 800, TimeUnit.MILLISECONDS);
 182                         break;
 183                     case RECORD:
 184                         threadPool.schedule(this::mp4Created, 800, TimeUnit.MILLISECONDS);
 185                         break;
 186                     default:
 187                         break;
 188                 }
 189             }
 190         }
 191     }
 192
 193     public void startConverting() {
 194         if (!ipCameraFfmpegThread.isAlive()) {
 195             ipCameraFfmpegThread = new IpCameraFfmpegThread();
 196             if (!password.isEmpty()) {
 197                 logger.debug("Starting ffmpeg with this command now:{}",
 198                         ffmpegCommand.replaceAll(password, "********"));
 199             } else {
 200                 logger.debug("Starting ffmpeg with this command now:{}", ffmpegCommand);
 201             }
 202             ipCameraFfmpegThread.start();
 203             if (format.equals(FFmpegFormat.HLS)) {
 204                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.ON);
 205             }
 206         }
 207         if (keepAlive != -1) {
 208             keepAlive = 8;
 209         }
 210     }
 211
 212     public boolean getIsAlive() {
 213         Process localProcess = process;
 214         if (localProcess != null) {
 215             return localProcess.isAlive();
 216         }
 217         return false;
 218     }
 219
 220     public void stopConverting() {
 221         if (ipCameraFfmpegThread.isAlive()) {
 222             logger.debug("Stopping ffmpeg {} now when keepalive is:{}", format, keepAlive);
 223             Process localProcess = process;
 224             if (localProcess != null) {
 225                 localProcess.destroyForcibly();
 226                 process = null;
 227             }
 228             if (format.equals(FFmpegFormat.HLS)) {
 229                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.OFF);
 230             }
 231         }
 232     }
 233 }