2 * Copyright (c) 2010-2023 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
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
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.voice.picotts.internal;
16 import java.io.FileInputStream;
17 import java.io.FileNotFoundException;
18 import java.io.IOException;
19 import java.io.InputStream;
21 import org.eclipse.jdt.annotation.NonNullByDefault;
22 import org.eclipse.jdt.annotation.Nullable;
23 import org.openhab.core.audio.AudioException;
24 import org.openhab.core.audio.AudioFormat;
25 import org.openhab.core.audio.AudioStream;
26 import org.openhab.core.audio.FixedLengthAudioStream;
27 import org.openhab.core.voice.Voice;
30 * Implementation of {@link AudioStream} for {@link PicoTTSService}
32 * @author Florian Schmidt - Initial Contribution
35 class PicoTTSAudioStream extends FixedLengthAudioStream {
36 private final Voice voice;
37 private final String text;
38 private final AudioFormat audioFormat;
39 private final InputStream inputStream;
42 private @Nullable File file;
44 public PicoTTSAudioStream(String text, Voice voice, AudioFormat audioFormat) throws AudioException {
47 this.audioFormat = audioFormat;
48 this.inputStream = createInputStream();
52 public AudioFormat getFormat() {
56 private InputStream createInputStream() throws AudioException {
57 String outputFile = generateOutputFilename();
58 String[] command = getCommand(outputFile);
61 Process process = Runtime.getRuntime().exec(command);
63 File file = new File(outputFile);
65 this.length = file.length();
66 return getFileInputStream(file);
67 } catch (IOException e) {
68 throw new AudioException("Error while executing '" + command + "'", e);
69 } catch (InterruptedException e) {
70 throw new AudioException("The '" + command + "' has been interrupted", e);
74 private InputStream getFileInputStream(File file) throws AudioException {
77 return new FileInputStream(file);
78 } catch (FileNotFoundException e) {
79 throw new AudioException("Cannot open temporary audio file '" + file.getName() + ".");
82 throw new AudioException("Temporary file '" + file.getName() + "' not found!");
87 * Generates a unique, absolute output filename
89 * @return Unique, absolute output filename
91 private String generateOutputFilename() throws AudioException {
93 File tempFile = File.createTempFile(Integer.toString(text.hashCode()), ".wav");
94 tempFile.deleteOnExit();
95 return tempFile.getAbsolutePath();
96 } catch (IOException e) {
97 throw new AudioException("Unable to create temp file.", e);
102 * Gets the command used to generate an audio file {@code outputFile}
104 * @param outputFile The absolute filename of the command's output
105 * @return The command used to generate the audio file {@code outputFile}
107 private String[] getCommand(String outputFile) {
108 return new String[] { "pico2wave", "-l=" + this.voice.getLabel(), "-w=" + outputFile, this.text };
112 public int read() throws IOException {
113 return inputStream.read();
117 public long length() {
122 public InputStream getClonedStream() throws AudioException {
123 File file = this.file;
125 return getFileInputStream(file);
127 throw new AudioException("No temporary audio file available.");