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.common.Disposable;
28 import org.openhab.core.voice.Voice;
31 * Implementation of {@link AudioStream} for {@link PicoTTSService}
33 * @author Florian Schmidt - Initial Contribution
36 class PicoTTSAudioStream extends FixedLengthAudioStream implements Disposable {
38 private final Voice voice;
39 private final String text;
40 private final AudioFormat audioFormat;
41 private final InputStream inputStream;
44 private @Nullable File file;
46 public PicoTTSAudioStream(String text, Voice voice, AudioFormat audioFormat) throws AudioException {
49 this.audioFormat = audioFormat;
50 this.inputStream = createInputStream();
54 public AudioFormat getFormat() {
58 private InputStream createInputStream() throws AudioException {
59 String outputFile = generateOutputFilename();
60 String[] command = getCommand(outputFile);
63 Process process = Runtime.getRuntime().exec(command);
65 File file = new File(outputFile);
67 this.length = file.length();
68 return getFileInputStream(file);
69 } catch (IOException e) {
70 throw new AudioException("Error while executing '" + command + "'", e);
71 } catch (InterruptedException e) {
72 throw new AudioException("The '" + command + "' has been interrupted", e);
76 private InputStream getFileInputStream(File file) throws AudioException {
79 return new FileInputStream(file);
80 } catch (FileNotFoundException e) {
81 throw new AudioException("Cannot open temporary audio file '" + file.getName() + ".");
84 throw new AudioException("Temporary file '" + file.getName() + "' not found!");
89 * Generates a unique, absolute output filename
91 * @return Unique, absolute output filename
93 private String generateOutputFilename() throws AudioException {
95 File tempFile = File.createTempFile(Integer.toString(text.hashCode()), ".wav");
96 tempFile.deleteOnExit();
97 return tempFile.getAbsolutePath();
98 } catch (IOException e) {
99 throw new AudioException("Unable to create temp file.", e);
104 * Gets the command used to generate an audio file {@code outputFile}
106 * @param outputFile The absolute filename of the command's output
107 * @return The command used to generate the audio file {@code outputFile}
109 private String[] getCommand(String outputFile) {
110 return new String[] { "pico2wave", "-l=" + this.voice.getLabel(), "-w=" + outputFile, this.text };
114 public int read() throws IOException {
115 return inputStream.read();
119 public long length() {
124 public InputStream getClonedStream() throws AudioException {
125 File file = this.file;
127 return getFileInputStream(file);
129 throw new AudioException("No temporary audio file available.");
134 public void dispose() throws IOException {
135 File localFile = file;
136 if (localFile != null && localFile.exists()) {
138 if (!localFile.delete()) {
139 throw new IOException("Failed to delete the file " + localFile.getAbsolutePath());
141 } catch (SecurityException e) {
142 throw new IOException("Failed to delete the file " + localFile.getAbsolutePath(), e);