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   1 /**
   2  * Copyright (c) 2010-2020 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
  14 package org.openhab.binding.ipcamera.internal;
  15
  16 import static org.openhab.binding.ipcamera.internal.IpCameraBindingConstants.*;
  17
  18 import java.io.BufferedReader;
  19 import java.io.IOException;
  20 import java.io.InputStream;
  21 import java.io.InputStreamReader;
  22 import java.util.ArrayList;
  23 import java.util.Collections;
  24 import java.util.List;
  25 import java.util.concurrent.Executors;
  26 import java.util.concurrent.ScheduledExecutorService;
  27 import java.util.concurrent.TimeUnit;
  28
  29 import org.eclipse.jdt.annotation.NonNullByDefault;
  30 import org.eclipse.jdt.annotation.Nullable;
  31 import org.openhab.binding.ipcamera.internal.IpCameraBindingConstants.FFmpegFormat;
  32 import org.openhab.binding.ipcamera.internal.handler.IpCameraHandler;
  33 import org.openhab.core.library.types.DecimalType;
  34 import org.openhab.core.library.types.OnOffType;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 /**
  39  * The {@link Ffmpeg} class is responsible for handling multiple ffmpeg conversions which are used for many tasks
  40  *
  41  *
  42  * @author Matthew Skinner - Initial contribution
  43  */
  44
  45 @NonNullByDefault
  46 public class Ffmpeg {
  47     private final Logger logger = LoggerFactory.getLogger(getClass());
  48     private IpCameraHandler ipCameraHandler;
  49     private @Nullable Process process = null;
  50     private String ffmpegCommand = "";
  51     private FFmpegFormat format;
  52     private List<String> commandArrayList = new ArrayList<String>();
  53     private IpCameraFfmpegThread ipCameraFfmpegThread = new IpCameraFfmpegThread();
  54     private int keepAlive = 8;
  55     private boolean running = false;
  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         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             return;
  89         } else if (--keepAlive == 0) {
  90             stopConverting();
  91         }
  92     }
  93
  94     private class IpCameraFfmpegThread extends Thread {
  95         private ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(2);
  96         public int countOfMotions;
  97
  98         IpCameraFfmpegThread() {
  99             setDaemon(true);
 100         }
 101
 102         private void gifCreated() {
 103             // Without a small delay, Pushover sends no file 10% of time.
 104             ipCameraHandler.setChannelState(CHANNEL_RECORDING_GIF, DecimalType.ZERO);
 105             ipCameraHandler.setChannelState(CHANNEL_GIF_HISTORY_LENGTH,
 106                     new DecimalType(++ipCameraHandler.gifHistoryLength));
 107         }
 108
 109         private void mp4Created() {
 110             ipCameraHandler.setChannelState(CHANNEL_RECORDING_MP4, DecimalType.ZERO);
 111             ipCameraHandler.setChannelState(CHANNEL_MP4_HISTORY_LENGTH,
 112                     new DecimalType(++ipCameraHandler.mp4HistoryLength));
 113         }
 114
 115         @Override
 116         public void run() {
 117             try {
 118                 process = Runtime.getRuntime().exec(commandArrayList.toArray(new String[commandArrayList.size()]));
 119                 Process localProcess = process;
 120                 if (localProcess != null) {
 121                     InputStream errorStream = localProcess.getErrorStream();
 122                     InputStreamReader errorStreamReader = new InputStreamReader(errorStream);
 123                     BufferedReader bufferedReader = new BufferedReader(errorStreamReader);
 124                     String line = null;
 125                     while ((line = bufferedReader.readLine()) != null) {
 126                         if (format.equals(FFmpegFormat.RTSP_ALARMS)) {
 127                             logger.debug("{}", line);
 128                             if (line.contains("lavfi.")) {
 129                                 if (countOfMotions == 4) {
 130                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 131                                 } else {
 132                                     countOfMotions++;
 133                                 }
 134                             } else if (line.contains("speed=")) {
 135                                 if (countOfMotions > 0) {
 136                                     countOfMotions--;
 137                                     countOfMotions--;
 138                                     if (countOfMotions <= 0) {
 139                                         ipCameraHandler.noMotionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 140                                     }
 141                                 }
 142                             } else if (line.contains("silence_start")) {
 143                                 ipCameraHandler.noAudioDetected();
 144                             } else if (line.contains("silence_end")) {
 145                                 ipCameraHandler.audioDetected();
 146                             }
 147                         } else {
 148                             logger.debug("{}", line);
 149                         }
 150                     }
 151                 }
 152             } catch (IOException e) {
 153                 logger.warn("An error occured trying to process the messages from FFmpeg.");
 154             } finally {
 155                 switch (format) {
 156                     case GIF:
 157                         threadPool.schedule(this::gifCreated, 800, TimeUnit.MILLISECONDS);
 158                         break;
 159                     case RECORD:
 160                         threadPool.schedule(this::mp4Created, 800, TimeUnit.MILLISECONDS);
 161                         break;
 162                     default:
 163                         break;
 164                 }
 165             }
 166         }
 167     }
 168
 169     public void startConverting() {
 170         if (!ipCameraFfmpegThread.isAlive()) {
 171             ipCameraFfmpegThread = new IpCameraFfmpegThread();
 172             logger.debug("Starting ffmpeg with this command now:{}", ffmpegCommand);
 173             ipCameraFfmpegThread.start();
 174             running = true;
 175             if (format.equals(FFmpegFormat.HLS)) {
 176                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.ON);
 177             }
 178         }
 179         if (keepAlive != -1) {
 180             keepAlive = 8;
 181         }
 182     }
 183
 184     public boolean getIsAlive() {
 185         return running;
 186     }
 187
 188     public void stopConverting() {
 189         if (ipCameraFfmpegThread.isAlive()) {
 190             logger.debug("Stopping ffmpeg {} now when keepalive is:{}", format, keepAlive);
 191             Process localProcess = process;
 192             if (localProcess != null) {
 193                 localProcess.destroyForcibly();
 194                 running = false;
 195             }
 196             if (format.equals(FFmpegFormat.HLS)) {
 197                 if (keepAlive == -1) {
 198                     logger.warn("HLS stopped when Stream should be running non stop, restarting HLS now.");
 199                     startConverting();
 200                     return;
 201                 } else {
 202                     ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.OFF);
 203                 }
 204             }
 205             keepAlive = 8;
 206         }
 207     }
 208 }