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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.CHANNEL_THRESHOLD_AUDIO_ALARM;
  17
  18 import java.util.ArrayList;
  19
  20 import org.eclipse.jdt.annotation.NonNullByDefault;
  21 import org.eclipse.jdt.annotation.Nullable;
  22 import org.openhab.binding.ipcamera.internal.IpCameraBindingConstants.FFmpegFormat;
  23 import org.openhab.binding.ipcamera.internal.handler.IpCameraHandler;
  24 import org.openhab.core.library.types.DecimalType;
  25 import org.openhab.core.library.types.OnOffType;
  26 import org.openhab.core.thing.ChannelUID;
  27 import org.openhab.core.types.Command;
  28 import org.openhab.core.types.RefreshType;
  29 import org.slf4j.Logger;
  30 import org.slf4j.LoggerFactory;
  31
  32 import io.netty.channel.ChannelDuplexHandler;
  33 import io.netty.channel.ChannelHandlerContext;
  34 import io.netty.util.ReferenceCountUtil;
  35
  36 /**
  37  * The {@link HttpOnlyHandler} is responsible for handling commands for generic and onvif thing types.
  38  *
  39  * @author Matthew Skinner - Initial contribution
  40  */
  41
  42 @NonNullByDefault
  43 public class HttpOnlyHandler extends ChannelDuplexHandler {
  44     private final Logger logger = LoggerFactory.getLogger(getClass());
  45     private IpCameraHandler ipCameraHandler;
  46
  47     public HttpOnlyHandler(IpCameraHandler handler) {
  48         ipCameraHandler = handler;
  49     }
  50
  51     // This handles the incoming http replies back from the camera.
  52     @Override
  53     public void channelRead(@Nullable ChannelHandlerContext ctx, @Nullable Object msg) throws Exception {
  54         ReferenceCountUtil.release(msg);
  55     }
  56
  57     // This handles the commands that come from the Openhab event bus.
  58     public void handleCommand(ChannelUID channelUID, Command command) {
  59         if (command instanceof RefreshType) {
  60             return; // Return as we have handled the refresh command above and don't need to
  61                     // continue further.
  62         } // end of "REFRESH"
  63         switch (channelUID.getId()) {
  64             case CHANNEL_THRESHOLD_AUDIO_ALARM:
  65                 if (OnOffType.ON.equals(command)) {
  66                     ipCameraHandler.audioAlarmEnabled = true;
  67                 } else if (OnOffType.OFF.equals(command) || DecimalType.ZERO.equals(command)) {
  68                     ipCameraHandler.audioAlarmEnabled = false;
  69                 } else {
  70                     ipCameraHandler.audioAlarmEnabled = true;
  71                     try {
  72                         ipCameraHandler.audioThreshold = Integer.valueOf(command.toString());
  73                     } catch (NumberFormatException e) {
  74                         logger.warn("Audio Threshold recieved an unexpected command, was it a number?");
  75                     }
  76                 }
  77                 ipCameraHandler.setupFfmpegFormat(FFmpegFormat.RTSP_ALARMS);
  78                 return;
  79         }
  80     }
  81
  82     // If a camera does not need to poll a request as often as snapshots, it can be
  83     // added here. Binding steps through the list and sends 1 every 8 seconds.
  84     public ArrayList<String> getLowPriorityRequests() {
  85         return new ArrayList<String>(0);
  86     }
  87 }