/* * Copyright (C) 2019-2020 Alex Yatskov <alex@foosoft.net> * Author: Alex Yatskov <alex@foosoft.net> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ /*global getOptionsContext, getOptionsMutable, settingsSaveOptions AudioSourceUI, audioGetTextToSpeechVoice*/ let audioSourceUI = null; async function audioSettingsInitialize() { const optionsContext = getOptionsContext(); const options = await getOptionsMutable(optionsContext); audioSourceUI = new AudioSourceUI.Container( options.audio.sources, document.querySelector('.audio-source-list'), document.querySelector('.audio-source-add') ); audioSourceUI.save = () => settingsSaveOptions(); textToSpeechInitialize(); } function textToSpeechInitialize() { if (typeof speechSynthesis === 'undefined') { return; } speechSynthesis.addEventListener('voiceschanged', () => updateTextToSpeechVoices(), false); updateTextToSpeechVoices(); document.querySelector('#text-to-speech-voice').addEventListener('change', (e) => onTextToSpeechVoiceChange(e), false); document.querySelector('#text-to-speech-voice-test').addEventListener('click', () => textToSpeechTest(), false); } function updateTextToSpeechVoices() { const voices = Array.prototype.map.call(speechSynthesis.getVoices(), (voice, index) => ({voice, index})); voices.sort(textToSpeechVoiceCompare); document.querySelector('#text-to-speech-voice-container').hidden = (voices.length === 0); const fragment = document.createDocumentFragment(); let option = document.createElement('option'); option.value = ''; option.textContent = 'None'; fragment.appendChild(option); for (const {voice} of voices) { option = document.createElement('option'); option.value = voice.voiceURI; option.textContent = `${voice.name} (${voice.lang})`; fragment.appendChild(option); } const select = document.querySelector('#text-to-speech-voice'); select.textContent = ''; select.appendChild(fragment); select.value = select.dataset.value; } function languageTagIsJapanese(languageTag) { return ( languageTag.startsWith('ja-') || languageTag.startsWith('jpn-') ); } function textToSpeechVoiceCompare(a, b) { const aIsJapanese = languageTagIsJapanese(a.voice.lang); const bIsJapanese = languageTagIsJapanese(b.voice.lang); if (aIsJapanese) { if (!bIsJapanese) { return -1; } } else { if (bIsJapanese) { return 1; } } const aIsDefault = a.voice.default; const bIsDefault = b.voice.default; if (aIsDefault) { if (!bIsDefault) { return -1; } } else { if (bIsDefault) { return 1; } } return a.index - b.index; } function textToSpeechTest() { try { const text = document.querySelector('#text-to-speech-voice-test').dataset.speechText || ''; const voiceURI = document.querySelector('#text-to-speech-voice').value; const voice = audioGetTextToSpeechVoice(voiceURI); if (voice === null) { return; } const utterance = new SpeechSynthesisUtterance(text); utterance.lang = 'ja-JP'; utterance.voice = voice; utterance.volume = 1.0; speechSynthesis.speak(utterance); } catch (e) { // NOP } } function onTextToSpeechVoiceChange(e) { e.currentTarget.dataset.value = e.currentTarget.value; }