69 lines
1.8 KiB
JavaScript
69 lines
1.8 KiB
JavaScript
/*
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* Copyright (C) 2020-2022 Yomichan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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class TextToSpeechAudio {
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constructor(text, voice) {
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this._text = text;
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this._voice = voice;
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this._utterance = null;
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this._volume = 1;
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}
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get currentTime() {
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return 0;
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}
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set currentTime(value) {
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// NOP
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}
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get volume() {
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return this._volume;
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}
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set volume(value) {
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this._volume = value;
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if (this._utterance !== null) {
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this._utterance.volume = value;
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}
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}
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async play() {
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try {
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if (this._utterance === null) {
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this._utterance = new SpeechSynthesisUtterance(typeof this._text === 'string' ? this._text : '');
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this._utterance.lang = 'ja-JP';
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this._utterance.volume = this._volume;
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this._utterance.voice = this._voice;
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}
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speechSynthesis.cancel();
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speechSynthesis.speak(this._utterance);
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} catch (e) {
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// NOP
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}
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}
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pause() {
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try {
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speechSynthesis.cancel();
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} catch (e) {
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// NOP
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}
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}
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}
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