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   1 /**
   2  * Copyright (c) 2010-2023 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.doorbird.internal.audio;
  14
  15 import java.io.IOException;
  16 import java.util.HashSet;
  17 import java.util.Locale;
  18 import java.util.Set;
  19
  20 import javax.sound.sampled.UnsupportedAudioFileException;
  21
  22 import org.eclipse.jdt.annotation.NonNullByDefault;
  23 import org.eclipse.jdt.annotation.Nullable;
  24 import org.openhab.binding.doorbird.internal.handler.DoorbellHandler;
  25 import org.openhab.core.audio.AudioFormat;
  26 import org.openhab.core.audio.AudioSink;
  27 import org.openhab.core.audio.AudioStream;
  28 import org.openhab.core.audio.FixedLengthAudioStream;
  29 import org.openhab.core.audio.UnsupportedAudioFormatException;
  30 import org.openhab.core.audio.UnsupportedAudioStreamException;
  31 import org.openhab.core.library.types.PercentType;
  32
  33 /**
  34  * The audio sink for doorbird
  35  *
  36  * @author Gwendal Roulleau - Initial contribution
  37  *
  38  */
  39 @NonNullByDefault
  40 public class DoorbirdAudioSink implements AudioSink {
  41
  42     private static final HashSet<AudioFormat> SUPPORTED_FORMATS = new HashSet<>();
  43     private static final HashSet<Class<? extends AudioStream>> SUPPORTED_STREAMS = new HashSet<>();
  44
  45     private DoorbellHandler doorbellHandler;
  46
  47     static {
  48         SUPPORTED_FORMATS.add(AudioFormat.WAV);
  49         SUPPORTED_STREAMS.add(FixedLengthAudioStream.class);
  50     }
  51
  52     public DoorbirdAudioSink(DoorbellHandler doorbellHandler) {
  53         this.doorbellHandler = doorbellHandler;
  54     }
  55
  56     @Override
  57     public String getId() {
  58         return doorbellHandler.getThing().getUID().toString();
  59     }
  60
  61     @Override
  62     public @Nullable String getLabel(@Nullable Locale locale) {
  63         return doorbellHandler.getThing().getLabel();
  64     }
  65
  66     @Override
  67     public void process(@Nullable AudioStream audioStream)
  68             throws UnsupportedAudioFormatException, UnsupportedAudioStreamException {
  69         if (audioStream == null) {
  70             return;
  71         }
  72         try (ConvertedInputStream normalizedULAWStream = new ConvertedInputStream(audioStream)) {
  73             doorbellHandler.sendAudio(normalizedULAWStream);
  74         } catch (UnsupportedAudioFileException | IOException e) {
  75             throw new UnsupportedAudioFormatException("Cannot send to the doorbird sink", audioStream.getFormat(), e);
  76         }
  77     }
  78
  79     @Override
  80     public Set<AudioFormat> getSupportedFormats() {
  81         return SUPPORTED_FORMATS;
  82     }
  83
  84     @Override
  85     public Set<Class<? extends AudioStream>> getSupportedStreams() {
  86         return SUPPORTED_STREAMS;
  87     }
  88
  89     @Override
  90     public PercentType getVolume() {
  91         return new PercentType(100);
  92     }
  93
  94     @Override
  95     public void setVolume(PercentType volume) {
  96         // NOT IMPLEMENTED
  97     }
  98 }