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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.benqprojector.internal;
  14
  15 import java.time.Duration;
  16
  17 import org.eclipse.jdt.annotation.NonNullByDefault;
  18 import org.eclipse.jdt.annotation.Nullable;
  19 import org.openhab.binding.benqprojector.internal.configuration.BenqProjectorConfiguration;
  20 import org.openhab.binding.benqprojector.internal.connector.BenqProjectorConnector;
  21 import org.openhab.binding.benqprojector.internal.connector.BenqProjectorSerialConnector;
  22 import org.openhab.binding.benqprojector.internal.connector.BenqProjectorTcpConnector;
  23 import org.openhab.binding.benqprojector.internal.enums.Switch;
  24 import org.openhab.core.cache.ExpiringCache;
  25 import org.openhab.core.io.transport.serial.SerialPortManager;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * Provide high level interface to BenQ projector.
  31  *
  32  * @author Michael Lobstein - Initial contribution
  33  */
  34 @NonNullByDefault
  35 public class BenqProjectorDevice {
  36     private static final String UNSUPPORTED_ITM = "Unsupported item";
  37     private static final String BLOCK_ITM = "Block item";
  38     private static final String ILLEGAL_FMT = "Illegal format";
  39
  40     private static final int LAMP_REFRESH_WAIT_MINUTES = 5;
  41
  42     private ExpiringCache<Integer> cachedLampHours = new ExpiringCache<>(Duration.ofMinutes(LAMP_REFRESH_WAIT_MINUTES),
  43             this::queryLamp);
  44
  45     private final Logger logger = LoggerFactory.getLogger(BenqProjectorDevice.class);
  46
  47     private BenqProjectorConnector connection;
  48     private boolean connected = false;
  49
  50     public BenqProjectorDevice(SerialPortManager serialPortManager, BenqProjectorConfiguration config) {
  51         connection = new BenqProjectorSerialConnector(serialPortManager, config.serialPort);
  52     }
  53
  54     public BenqProjectorDevice(BenqProjectorConfiguration config) {
  55         connection = new BenqProjectorTcpConnector(config.host, config.port);
  56     }
  57
  58     private synchronized String sendQuery(String query) throws BenqProjectorCommandException, BenqProjectorException {
  59         logger.debug("Query: '{}'", query);
  60         String response = connection.sendMessage(query);
  61
  62         if (response.length() == 0) {
  63             throw new BenqProjectorException("No response received");
  64         }
  65
  66         if (response.contains(UNSUPPORTED_ITM)) {
  67             return "UNSUPPORTED";
  68         }
  69
  70         if (response.contains(BLOCK_ITM)) {
  71             throw new BenqProjectorCommandException("Block Item received for command: " + query);
  72         }
  73
  74         if (response.contains(ILLEGAL_FMT)) {
  75             throw new BenqProjectorCommandException("Illegal Format response received for command: " + query);
  76         }
  77
  78         logger.debug("Response: '{}'", response);
  79
  80         // example: SOUR=HDMI2
  81         String[] responseParts = response.split("=");
  82         if (responseParts.length != 2) {
  83             throw new BenqProjectorCommandException("Invalid respose for command: " + query);
  84         }
  85
  86         return responseParts[1].toLowerCase();
  87     }
  88
  89     protected void sendCommand(String command) throws BenqProjectorCommandException, BenqProjectorException {
  90         sendQuery(command);
  91     }
  92
  93     protected int queryInt(String query) throws BenqProjectorCommandException, BenqProjectorException {
  94         String response = sendQuery(query);
  95         return Integer.parseInt(response);
  96     }
  97
  98     protected String queryString(String query) throws BenqProjectorCommandException, BenqProjectorException {
  99         return sendQuery(query);
 100     }
 101
 102     public void connect() throws BenqProjectorException {
 103         connection.connect();
 104         connected = true;
 105     }
 106
 107     public void disconnect() throws BenqProjectorException {
 108         connection.disconnect();
 109         connected = false;
 110     }
 111
 112     public boolean isConnected() {
 113         return connected;
 114     }
 115
 116     /*
 117      * Power
 118      */
 119     public Switch getPowerStatus() throws BenqProjectorCommandException, BenqProjectorException {
 120         return (queryString("pow=?").contains("on") ? Switch.ON : Switch.OFF);
 121     }
 122
 123     public void setPower(Switch value) throws BenqProjectorCommandException, BenqProjectorException {
 124         sendCommand(value == Switch.ON ? "pow=on" : "pow=off");
 125     }
 126
 127     /*
 128      * Source
 129      */
 130     public @Nullable String getSource() throws BenqProjectorCommandException, BenqProjectorException {
 131         return queryString("sour=?");
 132     }
 133
 134     public void setSource(String value) throws BenqProjectorCommandException, BenqProjectorException {
 135         sendCommand(String.format("sour=%s", value));
 136     }
 137
 138     /*
 139      * Picture Mode
 140      */
 141     public @Nullable String getPictureMode() throws BenqProjectorCommandException, BenqProjectorException {
 142         return queryString("appmod=?");
 143     }
 144
 145     public void setPictureMode(String value) throws BenqProjectorCommandException, BenqProjectorException {
 146         sendCommand(String.format("appmod=%s", value));
 147     }
 148
 149     /*
 150      * Aspect Ratio
 151      */
 152     public @Nullable String getAspectRatio() throws BenqProjectorCommandException, BenqProjectorException {
 153         return queryString("asp=?");
 154     }
 155
 156     public void setAspectRatio(String value) throws BenqProjectorCommandException, BenqProjectorException {
 157         sendCommand(String.format("asp=%s", value));
 158     }
 159
 160     /*
 161      * Blank Screen
 162      */
 163     public Switch getBlank() throws BenqProjectorCommandException, BenqProjectorException {
 164         return (queryString("blank=?").contains("on") ? Switch.ON : Switch.OFF);
 165     }
 166
 167     public void setBlank(Switch value) throws BenqProjectorCommandException, BenqProjectorException {
 168         sendCommand(String.format("blank=%s", (value == Switch.ON ? "on" : "off")));
 169     }
 170
 171     /*
 172      * Freeze
 173      */
 174     public Switch getFreeze() throws BenqProjectorCommandException, BenqProjectorException {
 175         return (queryString("freeze=?").contains("on") ? Switch.ON : Switch.OFF);
 176     }
 177
 178     public void setFreeze(Switch value) throws BenqProjectorCommandException, BenqProjectorException {
 179         sendCommand(String.format("freeze=%s", (value == Switch.ON ? "on" : "off")));
 180     }
 181
 182     /*
 183      * Direct Command
 184      */
 185     public void sendDirectCommand(String value) throws BenqProjectorCommandException, BenqProjectorException {
 186         sendCommand(value);
 187     }
 188
 189     /*
 190      * Lamp Time (hours) - get from cache
 191      */
 192     public int getLampTime() throws BenqProjectorCommandException, BenqProjectorException {
 193         Integer lampHours = cachedLampHours.getValue();
 194
 195         if (lampHours != null) {
 196             return lampHours.intValue();
 197         } else {
 198             throw new BenqProjectorCommandException("cachedLampHours returned null");
 199         }
 200     }
 201
 202     /*
 203      * Get Lamp Time
 204      */
 205     private @Nullable Integer queryLamp() {
 206         try {
 207             return Integer.valueOf(queryInt("ltim=?"));
 208         } catch (BenqProjectorCommandException | BenqProjectorException e) {
 209             logger.debug("Error executing command ltim=?", e);
 210             return null;
 211         }
 212     }
 213 }