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authortoasted-nutbread <toasted-nutbread@users.noreply.github.com>2019-10-10 19:58:06 -0400
committertoasted-nutbread <toasted-nutbread@users.noreply.github.com>2019-10-10 21:30:38 -0400
commit1d516b3b24eb6b89aa3a345341b6c1c35e24dfed (patch)
treed32c926ab268f73142f8672ce9b115a5610c04e5 /ext/mixed/js
parent8ae1da427756a9a1e057b3518c4069ac7d5b4b3a (diff)
Implement audio fallbacks
Diffstat (limited to 'ext/mixed/js')
-rw-r--r--ext/mixed/js/audio.js60
-rw-r--r--ext/mixed/js/display.js39
2 files changed, 76 insertions, 23 deletions
diff --git a/ext/mixed/js/audio.js b/ext/mixed/js/audio.js
new file mode 100644
index 00000000..b905140c
--- /dev/null
+++ b/ext/mixed/js/audio.js
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 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 <http://www.gnu.org/licenses/>.
+ */
+
+
+function audioGetFromUrl(url) {
+ return new Promise((resolve, reject) => {
+ const audio = new Audio(url);
+ audio.addEventListener('loadeddata', () => {
+ if (audio.duration === 5.694694 || audio.duration === 5.720718) {
+ // Hardcoded values for invalid audio
+ reject(new Error('Could not retrieve audio'));
+ } else {
+ resolve(audio);
+ }
+ });
+ audio.addEventListener('error', () => reject(audio.error));
+ });
+}
+
+async function audioGetFromSources(expression, sources, optionsContext, createAudioObject, cache=null) {
+ const key = `${expression.expression}:${expression.reading}`;
+ if (cache !== null && cache.hasOwnProperty(expression)) {
+ return cache[key];
+ }
+
+ for (let i = 0, ii = sources.length; i < ii; ++i) {
+ const source = sources[i];
+ const url = await apiAudioGetUrl(expression, source, optionsContext);
+ if (url === null) {
+ continue;
+ }
+
+ try {
+ const audio = createAudioObject ? await audioGetFromUrl(url) : null;
+ const result = {audio, url, source};
+ if (cache !== null) {
+ cache[key] = result;
+ }
+ return result;
+ } catch (e) {
+ // NOP
+ }
+ }
+ return {audio: null, source: null};
+}
diff --git a/ext/mixed/js/display.js b/ext/mixed/js/display.js
index c1224084..8d4e1e68 100644
--- a/ext/mixed/js/display.js
+++ b/ext/mixed/js/display.js
@@ -26,6 +26,8 @@ class Display {
this.context = null;
this.sequence = 0;
this.index = 0;
+ this.audioPlaying = null;
+ this.audioFallback = null;
this.audioCache = {};
this.optionsContext = {};
this.eventListeners = [];
@@ -404,33 +406,24 @@ class Display {
this.setSpinnerVisible(true);
const expression = expressionIndex === -1 ? definition : definition.expressions[expressionIndex];
- let url = await apiAudioGetUrl(expression, this.options.audio.sources[0], this.optionsContext);
- if (!url) {
- url = '/mixed/mp3/button.mp3';
- }
- for (const key in this.audioCache) {
- this.audioCache[key].pause();
+ if (this.audioPlaying !== null) {
+ this.audioPlaying.pause();
+ this.audioPlaying = null;
}
- const volume = this.options.audio.volume / 100.0;
- let audio = this.audioCache[url];
- if (audio) {
- audio.currentTime = 0;
- audio.volume = volume;
- audio.play();
- } else {
- audio = new Audio(url);
- audio.onloadeddata = () => {
- if (audio.duration === 5.694694 || audio.duration === 5.720718) {
- audio = new Audio('/mixed/mp3/button.mp3');
- }
-
- this.audioCache[url] = audio;
- audio.volume = volume;
- audio.play();
- };
+ let {audio} = await audioGetFromSources(expression, this.options.audio.sources, this.optionsContext, true, this.audioCache);
+ if (audio === null) {
+ if (this.audioFallback === null) {
+ this.audioFallback = new Audio('/mixed/mp3/button.mp3');
+ }
+ audio = this.audioFallback;
}
+
+ this.audioPlaying = audio;
+ audio.currentTime = 0;
+ audio.volume = this.options.audio.volume / 100.0;
+ audio.play();
} catch (e) {
this.onError(e);
} finally {