61 lines
2.1 KiB
JavaScript
61 lines
2.1 KiB
JavaScript
/*
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* Copyright (C) 2019 Alex Yatskov <alex@foosoft.net>
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* Author: Alex Yatskov <alex@foosoft.net>
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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 <http://www.gnu.org/licenses/>.
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*/
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function audioGetFromUrl(url) {
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return new Promise((resolve, reject) => {
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const audio = new Audio(url);
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audio.addEventListener('loadeddata', () => {
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if (audio.duration === 5.694694 || audio.duration === 5.720718) {
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// Hardcoded values for invalid audio
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reject(new Error('Could not retrieve audio'));
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} else {
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resolve(audio);
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}
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});
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audio.addEventListener('error', () => reject(audio.error));
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});
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}
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async function audioGetFromSources(expression, sources, optionsContext, createAudioObject, cache=null) {
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const key = `${expression.expression}:${expression.reading}`;
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if (cache !== null && cache.hasOwnProperty(expression)) {
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return cache[key];
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}
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for (let i = 0, ii = sources.length; i < ii; ++i) {
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const source = sources[i];
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const url = await apiAudioGetUrl(expression, source, optionsContext);
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if (url === null) {
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continue;
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}
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try {
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const audio = createAudioObject ? await audioGetFromUrl(url) : null;
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const result = {audio, url, source};
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if (cache !== null) {
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cache[key] = result;
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}
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return result;
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} catch (e) {
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// NOP
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}
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}
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return {audio: null, source: null};
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}
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