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