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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 boolean running = false;
  55     private String password;
  56
  57     public Ffmpeg(IpCameraHandler handle, FFmpegFormat format, String ffmpegLocation, String inputArguments,
  58             String input, String outArguments, String output, String username, String password) {
  59         this.format = format;
  60         this.password = password;
  61         ipCameraHandler = handle;
  62         String altInput = input;
  63         // Input can be snapshots not just rtsp or http
  64         if (!password.isEmpty() && !input.contains("@") && input.contains("rtsp")) {
  65             String credentials = username + ":" + password + "@";
  66             // will not work for https: but currently binding does not use https
  67             altInput = input.substring(0, 7) + credentials + input.substring(7);
  68         }
  69         if (inputArguments.isEmpty()) {
  70             ffmpegCommand = "-i " + altInput + " " + outArguments + " " + output;
  71         } else {
  72             ffmpegCommand = inputArguments + " -i " + altInput + " " + outArguments + " " + output;
  73         }
  74         Collections.addAll(commandArrayList, ffmpegCommand.trim().split("\\s+"));
  75         // ffmpegLocation may have a space in its folder
  76         commandArrayList.add(0, ffmpegLocation);
  77     }
  78
  79     public void setKeepAlive(int numberOfEightSeconds) {
  80         // We poll every 8 seconds due to mjpeg stream requirement.
  81         if (keepAlive == -1 && numberOfEightSeconds > 1) {
  82             return;// When set to -1 this will not auto turn off stream.
  83         }
  84         keepAlive = numberOfEightSeconds;
  85     }
  86
  87     public void checkKeepAlive() {
  88         if (keepAlive <= -1) {
  89             return;
  90         } else if (--keepAlive == 0) {
  91             stopConverting();
  92         }
  93     }
  94
  95     private class IpCameraFfmpegThread extends Thread {
  96         private ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(2);
  97         public int countOfMotions;
  98
  99         IpCameraFfmpegThread() {
 100             setDaemon(true);
 101         }
 102
 103         private void gifCreated() {
 104             // Without a small delay, Pushover sends no file 10% of time.
 105             ipCameraHandler.setChannelState(CHANNEL_RECORDING_GIF, DecimalType.ZERO);
 106             ipCameraHandler.setChannelState(CHANNEL_GIF_HISTORY_LENGTH,
 107                     new DecimalType(++ipCameraHandler.gifHistoryLength));
 108         }
 109
 110         private void mp4Created() {
 111             ipCameraHandler.setChannelState(CHANNEL_RECORDING_MP4, DecimalType.ZERO);
 112             ipCameraHandler.setChannelState(CHANNEL_MP4_HISTORY_LENGTH,
 113                     new DecimalType(++ipCameraHandler.mp4HistoryLength));
 114         }
 115
 116         @Override
 117         public void run() {
 118             try {
 119                 process = Runtime.getRuntime().exec(commandArrayList.toArray(new String[commandArrayList.size()]));
 120                 Process localProcess = process;
 121                 if (localProcess != null) {
 122                     InputStream errorStream = localProcess.getErrorStream();
 123                     InputStreamReader errorStreamReader = new InputStreamReader(errorStream);
 124                     BufferedReader bufferedReader = new BufferedReader(errorStreamReader);
 125                     String line = null;
 126                     while ((line = bufferedReader.readLine()) != null) {
 127                         if (format.equals(FFmpegFormat.RTSP_ALARMS)) {
 128                             logger.debug("{}", line);
 129                             if (line.contains("lavfi.")) {
 130                                 if (countOfMotions == 4) {
 131                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 132                                 } else {
 133                                     countOfMotions++;
 134                                 }
 135                             } else if (line.contains("speed=")) {
 136                                 if (countOfMotions > 0) {
 137                                     countOfMotions--;
 138                                     countOfMotions--;
 139                                     if (countOfMotions <= 0) {
 140                                         ipCameraHandler.noMotionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 141                                     }
 142                                 }
 143                             } else if (line.contains("silence_start")) {
 144                                 ipCameraHandler.noAudioDetected();
 145                             } else if (line.contains("silence_end")) {
 146                                 ipCameraHandler.audioDetected();
 147                             }
 148                         } else {
 149                             logger.debug("{}", line);
 150                         }
 151                     }
 152                 }
 153             } catch (IOException e) {
 154                 logger.warn("An error occured trying to process the messages from FFmpeg.");
 155             } finally {
 156                 switch (format) {
 157                     case GIF:
 158                         threadPool.schedule(this::gifCreated, 800, TimeUnit.MILLISECONDS);
 159                         break;
 160                     case RECORD:
 161                         threadPool.schedule(this::mp4Created, 800, TimeUnit.MILLISECONDS);
 162                         break;
 163                     default:
 164                         break;
 165                 }
 166             }
 167         }
 168     }
 169
 170     public void startConverting() {
 171         if (!ipCameraFfmpegThread.isAlive()) {
 172             ipCameraFfmpegThread = new IpCameraFfmpegThread();
 173             logger.debug("Starting ffmpeg with this command now:{}", ffmpegCommand.replaceAll(password, "********"));
 174             ipCameraFfmpegThread.start();
 175             running = true;
 176             if (format.equals(FFmpegFormat.HLS)) {
 177                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.ON);
 178             }
 179         }
 180         if (keepAlive != -1) {
 181             keepAlive = 8;
 182         }
 183     }
 184
 185     public boolean getIsAlive() {
 186         return running;
 187     }
 188
 189     public void stopConverting() {
 190         if (ipCameraFfmpegThread.isAlive()) {
 191             logger.debug("Stopping ffmpeg {} now when keepalive is:{}", format, keepAlive);
 192             Process localProcess = process;
 193             if (localProcess != null) {
 194                 localProcess.destroyForcibly();
 195                 running = false;
 196             }
 197             if (format.equals(FFmpegFormat.HLS)) {
 198                 if (keepAlive == -1) {
 199                     logger.warn("HLS stopped when Stream should be running non stop, restarting HLS now.");
 200                     startConverting();
 201                     return;
 202                 } else {
 203                     ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.OFF);
 204                 }
 205             }
 206             keepAlive = 8;
 207         }
 208     }
 209 }