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   1 /**
   2  * Copyright (c) 2010-2024 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.nio.charset.StandardCharsets;
  18 import java.util.ArrayList;
  19 import java.util.List;
  20
  21 import org.eclipse.jdt.annotation.NonNullByDefault;
  22 import org.eclipse.jdt.annotation.Nullable;
  23 import org.openhab.binding.ipcamera.internal.handler.IpCameraHandler;
  24 import org.openhab.core.library.types.OnOffType;
  25 import org.openhab.core.library.types.StringType;
  26 import org.openhab.core.thing.ChannelUID;
  27 import org.openhab.core.thing.binding.ThingHandler;
  28 import org.openhab.core.types.Command;
  29 import org.openhab.core.types.RefreshType;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 import io.netty.buffer.ByteBuf;
  34 import io.netty.buffer.Unpooled;
  35 import io.netty.channel.ChannelDuplexHandler;
  36 import io.netty.channel.ChannelHandlerContext;
  37 import io.netty.handler.codec.http.DefaultFullHttpRequest;
  38 import io.netty.handler.codec.http.FullHttpRequest;
  39 import io.netty.handler.codec.http.HttpHeaderNames;
  40 import io.netty.handler.codec.http.HttpHeaderValues;
  41 import io.netty.handler.codec.http.HttpMethod;
  42 import io.netty.handler.codec.http.HttpVersion;
  43 import io.netty.util.ReferenceCountUtil;
  44
  45 /**
  46  * The {@link HikvisionHandler} is responsible for handling commands, which are
  47  * sent to one of the channels.
  48  *
  49  * @author Matthew Skinner - Initial contribution
  50  */
  51
  52 @NonNullByDefault
  53 public class HikvisionHandler extends ChannelDuplexHandler {
  54     private final Logger logger = LoggerFactory.getLogger(getClass());
  55     private IpCameraHandler ipCameraHandler;
  56     private int nvrChannel;
  57     private int lineCount, vmdCount, leftCount, takenCount, faceCount, pirCount, fieldCount;
  58     private String requestUrl = "";
  59
  60     public HikvisionHandler(ThingHandler handler, int nvrChannel) {
  61         ipCameraHandler = (IpCameraHandler) handler;
  62         this.nvrChannel = nvrChannel;
  63     }
  64
  65     private void processEvent(String content) {
  66         // some cameras use <dynChannelID> or <channelID> and NVRs use channel 0 to say all channels
  67         if (content.contains("hannelID>" + nvrChannel) || content.contains("<channelID>0</channelID>")) {
  68             final int debounce = 3;
  69             String eventType = Helper.fetchXML(content, "", "<eventType>");
  70             ipCameraHandler.setChannelState(CHANNEL_LAST_EVENT_DATA, new StringType(content));
  71             switch (eventType) {
  72                 case "videoloss":
  73                     if (content.contains("<eventState>inactive</eventState>")) {
  74                         if (vmdCount > 1) {
  75                             vmdCount = 1;
  76                         }
  77                         countDown();
  78                         countDown();
  79                     }
  80                     break;
  81                 case "PIR":
  82                     ipCameraHandler.motionDetected(CHANNEL_PIR_ALARM);
  83                     pirCount = debounce;
  84                     break;
  85                 case "attendedBaggage":
  86                     ipCameraHandler.setChannelState(CHANNEL_ITEM_TAKEN, OnOffType.ON);
  87                     takenCount = debounce;
  88                     break;
  89                 case "unattendedBaggage":
  90                     ipCameraHandler.setChannelState(CHANNEL_ITEM_LEFT, OnOffType.ON);
  91                     leftCount = debounce;
  92                     break;
  93                 case "facedetection":
  94                     ipCameraHandler.setChannelState(CHANNEL_FACE_DETECTED, OnOffType.ON);
  95                     faceCount = debounce;
  96                     break;
  97                 case "VMD":
  98                     ipCameraHandler.motionDetected(CHANNEL_MOTION_ALARM);
  99                     vmdCount = debounce;
 100                     break;
 101                 case "fielddetection":
 102                     ipCameraHandler.motionDetected(CHANNEL_FIELD_DETECTION_ALARM);
 103                     fieldCount = debounce;
 104                     break;
 105                 case "linedetection":
 106                     ipCameraHandler.motionDetected(CHANNEL_LINE_CROSSING_ALARM);
 107                     lineCount = debounce;
 108                     break;
 109                 default:
 110                     logger.debug("Unrecognised Hikvision eventType={}", eventType);
 111             }
 112         }
 113         countDown();
 114     }
 115
 116     public void setURL(String url) {
 117         requestUrl = url;
 118     }
 119
 120     // This handles the incoming http replies back from the camera.
 121     @Override
 122     public void channelRead(@Nullable ChannelHandlerContext ctx, @Nullable Object msg) throws Exception {
 123         if (msg == null || ctx == null) {
 124             return;
 125         }
 126         try {
 127             String content = msg.toString();
 128             logger.trace("HTTP Result from {} contains \t:{}:", requestUrl, content);
 129             switch (requestUrl) {
 130                 case "/ISAPI/Event/notification/alertStream":
 131                     int startIndex = content.indexOf("<");// skip to start of XML content
 132                     if (startIndex != -1) {
 133                         String eventData = content.substring(startIndex, content.length());
 134                         processEvent(eventData);
 135                     }
 136                     return;
 137                 case "/ISAPI/System/IO/capabilities": // Used to check if the camera supports IO
 138                     List<org.openhab.core.thing.Channel> removeChannels = new ArrayList<>();
 139                     org.openhab.core.thing.Channel channel;
 140                     if (content.contains("<IOOutputPortNums>0<") || !content.contains("<IOOutputPortNums>")) {
 141                         logger.debug("Camera does not support IO outputs.");
 142                         channel = ipCameraHandler.getThing().getChannel(CHANNEL_ACTIVATE_ALARM_OUTPUT);
 143                         if (channel != null) {
 144                             removeChannels.add(channel);
 145                         }
 146                         channel = ipCameraHandler.getThing().getChannel(CHANNEL_ACTIVATE_ALARM_OUTPUT2);
 147                         if (channel != null) {
 148                             removeChannels.add(channel);
 149                         }
 150                     } else if (content.contains("<IOOutputPortNums>1<")) {
 151                         channel = ipCameraHandler.getThing().getChannel(CHANNEL_ACTIVATE_ALARM_OUTPUT2);
 152                         if (channel != null) {
 153                             removeChannels.add(channel);
 154                         }
 155                     }
 156                     ipCameraHandler.lowPriorityRequests.clear(); // no longer need to check if the IO is supported.
 157                     if (content.contains("<IOInputPortNums>0<") || !content.contains("<IOInputPortNums>")) {
 158                         logger.debug("Camera does not support IO inputs.");
 159                         channel = ipCameraHandler.getThing().getChannel(CHANNEL_ENABLE_EXTERNAL_ALARM_INPUT);
 160                         if (channel != null) {
 161                             removeChannels.add(channel);
 162                         }
 163                         channel = ipCameraHandler.getThing().getChannel(CHANNEL_TRIGGER_EXTERNAL_ALARM_INPUT);
 164                         if (channel != null) {
 165                             removeChannels.add(channel);
 166                         }
 167                         channel = ipCameraHandler.getThing().getChannel(CHANNEL_EXTERNAL_ALARM_INPUT);
 168                         if (channel != null) {
 169                             removeChannels.add(channel);
 170                         }
 171                         channel = ipCameraHandler.getThing().getChannel(CHANNEL_EXTERNAL_ALARM_INPUT2);
 172                         if (channel != null) {
 173                             removeChannels.add(channel);
 174                         }
 175                     } else if (content.contains("<IOInputPortNums>1<")) {
 176                         channel = ipCameraHandler.getThing().getChannel(CHANNEL_EXTERNAL_ALARM_INPUT2);
 177                         if (channel != null) {
 178                             removeChannels.add(channel);
 179                         }
 180                         // start checking the input IO status
 181                         ipCameraHandler.lowPriorityRequests.set(0,
 182                                 "/ISAPI/System/IO/inputs/" + ipCameraHandler.cameraConfig.getNvrChannel() + "/status");
 183                     } else {
 184                         // start checking the input IO status
 185                         ipCameraHandler.lowPriorityRequests.set(0,
 186                                 "/ISAPI/System/IO/inputs/" + ipCameraHandler.cameraConfig.getNvrChannel() + "/status");
 187                     }
 188                     ipCameraHandler.removeChannels(removeChannels);
 189                     return;
 190             }
 191             String replyElement = Helper.fetchXML(content, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>", "<");
 192             switch (replyElement) {
 193                 case "MotionDetection version=":
 194                     ipCameraHandler.storeHttpReply(
 195                             "/ISAPI/System/Video/inputs/channels/" + nvrChannel + "01/motionDetection", content);
 196                     if (content.contains("<enabled>true</enabled>")) {
 197                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_MOTION_ALARM, OnOffType.ON);
 198                     } else if (content.contains("<enabled>false</enabled>")) {
 199                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_MOTION_ALARM, OnOffType.OFF);
 200                     }
 201                     break;
 202                 case "IOInputPort version=":
 203                     ipCameraHandler.storeHttpReply("/ISAPI/System/IO/inputs/" + nvrChannel, content);
 204                     if (content.contains("<enabled>true</enabled>")) {
 205                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_EXTERNAL_ALARM_INPUT, OnOffType.ON);
 206                     } else if (content.contains("<enabled>false</enabled>")) {
 207                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_EXTERNAL_ALARM_INPUT, OnOffType.OFF);
 208                     }
 209                     if (content.contains("<triggering>low</triggering>")) {
 210                         ipCameraHandler.setChannelState(CHANNEL_TRIGGER_EXTERNAL_ALARM_INPUT, OnOffType.OFF);
 211                     } else if (content.contains("<triggering>high</triggering>")) {
 212                         ipCameraHandler.setChannelState(CHANNEL_TRIGGER_EXTERNAL_ALARM_INPUT, OnOffType.ON);
 213                     }
 214                     break;
 215                 case "LineDetection":
 216                     ipCameraHandler.storeHttpReply("/ISAPI/Smart/LineDetection/" + nvrChannel + "01", content);
 217                     if (content.contains("<enabled>true</enabled>")) {
 218                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_LINE_CROSSING_ALARM, OnOffType.ON);
 219                     } else if (content.contains("<enabled>false</enabled>")) {
 220                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_LINE_CROSSING_ALARM, OnOffType.OFF);
 221                     }
 222                     break;
 223                 case "TextOverlay version=":
 224                     ipCameraHandler.storeHttpReply(
 225                             "/ISAPI/System/Video/inputs/channels/" + nvrChannel + "/overlays/text/1", content);
 226                     String text = Helper.fetchXML(content, "<enabled>true</enabled>", "<displayText>");
 227                     ipCameraHandler.setChannelState(CHANNEL_TEXT_OVERLAY, StringType.valueOf(text));
 228                     break;
 229                 case "AudioDetection version=":
 230                     ipCameraHandler.storeHttpReply("/ISAPI/Smart/AudioDetection/channels/" + nvrChannel + "01",
 231                             content);
 232                     if (content.contains("<enabled>true</enabled>")) {
 233                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_AUDIO_ALARM, OnOffType.ON);
 234                     } else if (content.contains("<enabled>false</enabled>")) {
 235                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_AUDIO_ALARM, OnOffType.OFF);
 236                     }
 237                     break;
 238                 case "IOPortStatus version=":
 239                     if (content.contains("<ioState>active</ioState>")) {
 240                         ipCameraHandler.setChannelState(CHANNEL_EXTERNAL_ALARM_INPUT, OnOffType.ON);
 241                     } else if (content.contains("<ioState>inactive</ioState>")) {
 242                         ipCameraHandler.setChannelState(CHANNEL_EXTERNAL_ALARM_INPUT, OnOffType.OFF);
 243                     }
 244                     break;
 245                 case "FieldDetection version=":
 246                     ipCameraHandler.storeHttpReply("/ISAPI/Smart/FieldDetection/" + nvrChannel + "01", content);
 247                     if (content.contains("<enabled>true</enabled>")) {
 248                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_FIELD_DETECTION_ALARM, OnOffType.ON);
 249                     } else if (content.contains("<enabled>false</enabled>")) {
 250                         ipCameraHandler.setChannelState(CHANNEL_ENABLE_FIELD_DETECTION_ALARM, OnOffType.OFF);
 251                     }
 252                     break;
 253                 case "ResponseStatus version=":
 254                     ////////////////// External Alarm Input ///////////////
 255                     if (content
 256                             .contains("<requestURL>/ISAPI/System/IO/inputs/" + nvrChannel + "/status</requestURL>")) {
 257                         // Stops checking the external alarm if camera does not have feature.
 258                         if (content.contains("<statusString>Invalid Operation</statusString>")) {
 259                             ipCameraHandler.lowPriorityRequests.remove(0);
 260                             ipCameraHandler.logger.debug(
 261                                     "Stopping checks for alarm inputs as camera appears to be missing this feature.");
 262                         }
 263                     }
 264                     break;
 265             }
 266
 267         } finally {
 268             ReferenceCountUtil.release(msg);
 269         }
 270     }
 271
 272     // This does debouncing of the alarms
 273     void countDown() {
 274         if (lineCount > 1) {
 275             lineCount--;
 276         } else if (lineCount == 1) {
 277             ipCameraHandler.setChannelState(CHANNEL_LINE_CROSSING_ALARM, OnOffType.OFF);
 278             lineCount--;
 279         }
 280         if (vmdCount > 1) {
 281             vmdCount--;
 282         } else if (vmdCount == 1) {
 283             ipCameraHandler.setChannelState(CHANNEL_MOTION_ALARM, OnOffType.OFF);
 284             vmdCount--;
 285         }
 286         if (leftCount > 1) {
 287             leftCount--;
 288         } else if (leftCount == 1) {
 289             ipCameraHandler.setChannelState(CHANNEL_ITEM_LEFT, OnOffType.OFF);
 290             leftCount--;
 291         }
 292         if (takenCount > 1) {
 293             takenCount--;
 294         } else if (takenCount == 1) {
 295             ipCameraHandler.setChannelState(CHANNEL_ITEM_TAKEN, OnOffType.OFF);
 296             takenCount--;
 297         }
 298         if (faceCount > 1) {
 299             faceCount--;
 300         } else if (faceCount == 1) {
 301             ipCameraHandler.setChannelState(CHANNEL_FACE_DETECTED, OnOffType.OFF);
 302             faceCount--;
 303         }
 304         if (pirCount > 1) {
 305             pirCount--;
 306         } else if (pirCount == 1) {
 307             ipCameraHandler.setChannelState(CHANNEL_PIR_ALARM, OnOffType.OFF);
 308             pirCount--;
 309         }
 310         if (fieldCount > 1) {
 311             fieldCount--;
 312         } else if (fieldCount == 1) {
 313             ipCameraHandler.setChannelState(CHANNEL_FIELD_DETECTION_ALARM, OnOffType.OFF);
 314             fieldCount--;
 315         }
 316         if (fieldCount == 0 && pirCount == 0 && faceCount == 0 && takenCount == 0 && leftCount == 0 && vmdCount == 0
 317                 && lineCount == 0) {
 318             ipCameraHandler.noMotionDetected(CHANNEL_MOTION_ALARM);
 319         }
 320     }
 321
 322     public void hikSendXml(String httpPutURL, String xml) {
 323         logger.trace("Body for PUT:{} is going to be:{}", httpPutURL, xml);
 324         FullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, new HttpMethod("PUT"), httpPutURL);
 325         request.headers().set(HttpHeaderNames.HOST, ipCameraHandler.cameraConfig.getIp());
 326         request.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
 327         request.headers().add(HttpHeaderNames.CONTENT_TYPE, "application/xml; charset=\"UTF-8\"");
 328         ByteBuf bbuf = Unpooled.copiedBuffer(xml, StandardCharsets.UTF_8);
 329         request.headers().set(HttpHeaderNames.CONTENT_LENGTH, bbuf.readableBytes());
 330         request.content().clear().writeBytes(bbuf);
 331         ipCameraHandler.sendHttpPUT(httpPutURL, request);
 332     }
 333
 334     public void hikChangeSetting(String httpGetPutURL, String removeElement, String replaceRemovedElementWith) {
 335         ChannelTracking localTracker = ipCameraHandler.channelTrackingMap.get(httpGetPutURL);
 336         if (localTracker == null) {
 337             ipCameraHandler.sendHttpGET(httpGetPutURL);
 338             logger.debug(
 339                     "Did not have a reply stored before hikChangeSetting was run, try again shortly as a reply has just been requested.");
 340             return;
 341         }
 342         String body = localTracker.getReply();
 343         if (body.isEmpty()) {
 344             logger.debug(
 345                     "Did not have a reply stored before hikChangeSetting was run, try again shortly as a reply has just been requested.");
 346             ipCameraHandler.sendHttpGET(httpGetPutURL);
 347         } else {
 348             logger.trace("An OLD reply from the camera was:{}", body);
 349             if (body.contains("<?xml version=\"1.0\" encoding=\"UTF-8\"?>")) {
 350                 body = body.substring("<?xml version=\"1.0\" encoding=\"UTF-8\"?>".length());
 351             }
 352             int elementIndexStart = body.indexOf("<" + removeElement + ">");
 353             int elementIndexEnd = body.indexOf("</" + removeElement + ">");
 354             body = body.substring(0, elementIndexStart) + replaceRemovedElementWith
 355                     + body.substring(elementIndexEnd + removeElement.length() + 3, body.length());
 356             logger.trace("Body for this PUT is going to be:{}", body);
 357             localTracker.setReply(body);
 358             FullHttpRequest request = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, new HttpMethod("PUT"),
 359                     httpGetPutURL);
 360             request.headers().set(HttpHeaderNames.HOST, ipCameraHandler.cameraConfig.getIp());
 361             request.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
 362             request.headers().add(HttpHeaderNames.CONTENT_TYPE, "application/xml; charset=\"UTF-8\"");
 363             ByteBuf bbuf = Unpooled.copiedBuffer(body, StandardCharsets.UTF_8);
 364             request.headers().set(HttpHeaderNames.CONTENT_LENGTH, bbuf.readableBytes());
 365             request.content().clear().writeBytes(bbuf);
 366             ipCameraHandler.sendHttpPUT(httpGetPutURL, request);
 367         }
 368     }
 369
 370     // This handles the commands that come from the Openhab event bus.
 371     public void handleCommand(ChannelUID channelUID, Command command) {
 372         if (command instanceof RefreshType) {
 373             switch (channelUID.getId()) {
 374                 case CHANNEL_ENABLE_AUDIO_ALARM:
 375                     ipCameraHandler.sendHttpGET("/ISAPI/Smart/AudioDetection/channels/" + nvrChannel + "01");
 376                     return;
 377                 case CHANNEL_ENABLE_LINE_CROSSING_ALARM:
 378                     ipCameraHandler.sendHttpGET("/ISAPI/Smart/LineDetection/" + nvrChannel + "01");
 379                     return;
 380                 case CHANNEL_ENABLE_FIELD_DETECTION_ALARM:
 381                     ipCameraHandler.logger.debug("FieldDetection command");
 382                     ipCameraHandler.sendHttpGET("/ISAPI/Smart/FieldDetection/" + nvrChannel + "01");
 383                     return;
 384                 case CHANNEL_ENABLE_MOTION_ALARM:
 385                     ipCameraHandler
 386                             .sendHttpGET("/ISAPI/System/Video/inputs/channels/" + nvrChannel + "01/motionDetection");
 387                     return;
 388                 case CHANNEL_TEXT_OVERLAY:
 389                     ipCameraHandler
 390                             .sendHttpGET("/ISAPI/System/Video/inputs/channels/" + nvrChannel + "/overlays/text/1");
 391                     return;
 392                 case CHANNEL_ENABLE_EXTERNAL_ALARM_INPUT:
 393                     ipCameraHandler.sendHttpGET("/ISAPI/System/IO/inputs/" + nvrChannel);
 394                     return;
 395                 case CHANNEL_TRIGGER_EXTERNAL_ALARM_INPUT:
 396                     ipCameraHandler.sendHttpGET("/ISAPI/System/IO/inputs/" + nvrChannel);
 397                     return;
 398             }
 399             return; // Return as we have handled the refresh command above and don't need to
 400                     // continue further.
 401         } // end of "REFRESH"
 402         switch (channelUID.getId()) {
 403             case CHANNEL_TEXT_OVERLAY:
 404                 logger.debug("Changing text overlay to {}", command.toString());
 405                 if (command.toString().isEmpty()) {
 406                     hikChangeSetting("/ISAPI/System/Video/inputs/channels/" + nvrChannel + "/overlays/text/1",
 407                             "enabled", "<enabled>false</enabled>");
 408                 } else {
 409                     hikChangeSetting("/ISAPI/System/Video/inputs/channels/" + nvrChannel + "/overlays/text/1",
 410                             "displayText", "<displayText>" + command.toString() + "</displayText>");
 411                     hikChangeSetting("/ISAPI/System/Video/inputs/channels/" + nvrChannel + "/overlays/text/1",
 412                             "enabled", "<enabled>true</enabled>");
 413                 }
 414                 return;
 415             case CHANNEL_ENABLE_EXTERNAL_ALARM_INPUT:
 416                 logger.debug("Changing enabled state of the external input 1 to {}", command.toString());
 417                 if (OnOffType.ON.equals(command)) {
 418                     hikChangeSetting("/ISAPI/System/IO/inputs/" + nvrChannel, "enabled", "<enabled>true</enabled>");
 419                 } else {
 420                     hikChangeSetting("/ISAPI/System/IO/inputs/" + nvrChannel, "enabled", "<enabled>false</enabled>");
 421                 }
 422                 return;
 423             case CHANNEL_TRIGGER_EXTERNAL_ALARM_INPUT:
 424                 logger.debug("Changing triggering state of the external input 1 to {}", command.toString());
 425                 if (OnOffType.OFF.equals(command)) {
 426                     hikChangeSetting("/ISAPI/System/IO/inputs/" + nvrChannel, "triggering",
 427                             "<triggering>low</triggering>");
 428                 } else {
 429                     hikChangeSetting("/ISAPI/System/IO/inputs/" + nvrChannel, "triggering",
 430                             "<triggering>high</triggering>");
 431                 }
 432                 return;
 433             case CHANNEL_ENABLE_PIR_ALARM:
 434                 if (OnOffType.ON.equals(command)) {
 435                     hikChangeSetting("/ISAPI/WLAlarm/PIR", "enabled", "<enabled>true</enabled>");
 436                 } else {
 437                     hikChangeSetting("/ISAPI/WLAlarm/PIR", "enabled", "<enabled>false</enabled>");
 438                 }
 439                 return;
 440             case CHANNEL_ENABLE_AUDIO_ALARM:
 441                 if (OnOffType.ON.equals(command)) {
 442                     hikChangeSetting("/ISAPI/Smart/AudioDetection/channels/" + nvrChannel + "01", "enabled",
 443                             "<enabled>true</enabled>");
 444                 } else {
 445                     hikChangeSetting("/ISAPI/Smart/AudioDetection/channels/" + nvrChannel + "01", "enabled",
 446                             "<enabled>false</enabled>");
 447                 }
 448                 return;
 449             case CHANNEL_ENABLE_LINE_CROSSING_ALARM:
 450                 if (OnOffType.ON.equals(command)) {
 451                     hikChangeSetting("/ISAPI/Smart/LineDetection/" + nvrChannel + "01", "enabled",
 452                             "<enabled>true</enabled>");
 453                 } else {
 454                     hikChangeSetting("/ISAPI/Smart/LineDetection/" + nvrChannel + "01", "enabled",
 455                             "<enabled>false</enabled>");
 456                 }
 457                 return;
 458             case CHANNEL_ENABLE_MOTION_ALARM:
 459                 if (OnOffType.ON.equals(command)) {
 460                     hikChangeSetting("/ISAPI/System/Video/inputs/channels/" + nvrChannel + "01/motionDetection",
 461                             "enabled", "<enabled>true</enabled>");
 462                 } else {
 463                     hikChangeSetting("/ISAPI/System/Video/inputs/channels/" + nvrChannel + "01/motionDetection",
 464                             "enabled", "<enabled>false</enabled>");
 465                 }
 466                 return;
 467             case CHANNEL_ENABLE_FIELD_DETECTION_ALARM:
 468                 if (OnOffType.ON.equals(command)) {
 469                     hikChangeSetting("/ISAPI/Smart/FieldDetection/" + nvrChannel + "01", "enabled",
 470                             "<enabled>true</enabled>");
 471                 } else {
 472                     hikChangeSetting("/ISAPI/Smart/FieldDetection/" + nvrChannel + "01", "enabled",
 473                             "<enabled>false</enabled>");
 474                 }
 475                 return;
 476             case CHANNEL_ACTIVATE_ALARM_OUTPUT:
 477                 if (OnOffType.ON.equals(command)) {
 478                     hikSendXml("/ISAPI/System/IO/outputs/" + nvrChannel + "/trigger",
 479                             "<IOPortData version=\"1.0\" xmlns=\"http://www.hikvision.com/ver10/XMLSchema\">\r\n    <outputState>high</outputState>\r\n</IOPortData>\r\n");
 480                 } else {
 481                     hikSendXml("/ISAPI/System/IO/outputs/" + nvrChannel + "/trigger",
 482                             "<IOPortData version=\"1.0\" xmlns=\"http://www.hikvision.com/ver10/XMLSchema\">\r\n    <outputState>low</outputState>\r\n</IOPortData>\r\n");
 483                 }
 484                 return;
 485         }
 486     }
 487 }