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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 seconds) {
  79         if (seconds == -1) {
  80             keepAlive = -1;
  81         } else {// We now poll every 8 seconds due to mjpeg stream requirement.
  82             keepAlive = 8; // 64 seconds approx.
  83         }
  84     }
  85
  86     public void checkKeepAlive() {
  87         if (keepAlive <= -1) {
  88             return;
  89         } else if (keepAlive == 0) {
  90             stopConverting();
  91         } else {
  92             keepAlive--;
  93         }
  94         return;
  95     }
  96
  97     private class IpCameraFfmpegThread extends Thread {
  98         private ScheduledExecutorService threadPool = Executors.newScheduledThreadPool(2);
  99         public int countOfMotions;
 100
 101         IpCameraFfmpegThread() {
 102             setDaemon(true);
 103         }
 104
 105         private void gifCreated() {
 106             // Without a small delay, Pushover sends no file 10% of time.
 107             ipCameraHandler.setChannelState(CHANNEL_RECORDING_GIF, DecimalType.ZERO);
 108             ipCameraHandler.setChannelState(CHANNEL_GIF_HISTORY_LENGTH,
 109                     new DecimalType(++ipCameraHandler.gifHistoryLength));
 110         }
 111
 112         private void mp4Created() {
 113             ipCameraHandler.setChannelState(CHANNEL_RECORDING_MP4, DecimalType.ZERO);
 114             ipCameraHandler.setChannelState(CHANNEL_MP4_HISTORY_LENGTH,
 115                     new DecimalType(++ipCameraHandler.mp4HistoryLength));
 116         }
 117
 118         @Override
 119         public void run() {
 120             try {
 121                 process = Runtime.getRuntime().exec(commandArrayList.toArray(new String[commandArrayList.size()]));
 122                 if (process != null) {
 123                     InputStream errorStream = process.getErrorStream();
 124                     InputStreamReader errorStreamReader = new InputStreamReader(errorStream);
 125                     BufferedReader bufferedReader = new BufferedReader(errorStreamReader);
 126                     String line = null;
 127                     while ((line = bufferedReader.readLine()) != null) {
 128                         if (format.equals(FFmpegFormat.RTSP_ALARMS)) {
 129                             logger.debug("{}", line);
 130                             if (line.contains("lavfi.")) {
 131                                 if (countOfMotions == 4) {
 132                                     ipCameraHandler.motionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 133                                 } else {
 134                                     countOfMotions++;
 135                                 }
 136                             } else if (line.contains("speed=")) {
 137                                 if (countOfMotions > 0) {
 138                                     countOfMotions--;
 139                                     countOfMotions--;
 140                                     if (countOfMotions <= 0) {
 141                                         ipCameraHandler.noMotionDetected(CHANNEL_FFMPEG_MOTION_ALARM);
 142                                     }
 143                                 }
 144                             } else if (line.contains("silence_start")) {
 145                                 ipCameraHandler.noAudioDetected();
 146                             } else if (line.contains("silence_end")) {
 147                                 ipCameraHandler.audioDetected();
 148                             }
 149                         } else {
 150                             logger.debug("{}", line);
 151                         }
 152                     }
 153                 }
 154             } catch (IOException e) {
 155                 logger.warn("An error occured trying to process the messages from FFmpeg.");
 156             } finally {
 157                 switch (format) {
 158                     case GIF:
 159                         threadPool.schedule(this::gifCreated, 800, TimeUnit.MILLISECONDS);
 160                         break;
 161                     case RECORD:
 162                         threadPool.schedule(this::mp4Created, 800, TimeUnit.MILLISECONDS);
 163                         break;
 164                     default:
 165                         break;
 166                 }
 167             }
 168         }
 169     }
 170
 171     public void startConverting() {
 172         if (!ipCameraFfmpegThread.isAlive()) {
 173             ipCameraFfmpegThread = new IpCameraFfmpegThread();
 174             logger.debug("Starting ffmpeg with this command now:{}", ffmpegCommand);
 175             ipCameraFfmpegThread.start();
 176             running = true;
 177             if (format.equals(FFmpegFormat.HLS)) {
 178                 ipCameraHandler.setChannelState(CHANNEL_START_STREAM, OnOffType.ON);
 179             }
 180         }
 181         if (keepAlive != -1) {
 182             keepAlive = 8;
 183         }
 184     }
 185
 186     public boolean getIsAlive() {
 187         return running;
 188     }
 189
 190     public void stopConverting() {
 191         if (ipCameraFfmpegThread.isAlive()) {
 192             logger.debug("Stopping ffmpeg {} now", format);
 193             running = false;
 194             if (process != null) {
 195                 process.destroyForcibly();
 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 }