Move audio settings into new script

1 files changed, 102 insertions, 0 deletions

diff --git a/ext/bg/js/settings/audio.js b/ext/bg/js/settings/audio.js
new file mode 100644
index 00000000..f63551ed
--- /dev/null
+++ b/ext/bg/js/settings/audio.js
@@ -0,0 +1,102 @@
+/*
+ * 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/>.
+ */
+
+
+let audioSourceUI = null;
+
+async function audioSettingsInitialize() {
+    const optionsContext = getOptionsContext();
+    const options = await apiOptionsGet(optionsContext);
+    audioSourceUI = new AudioSourceUI.Container(options.audio.sources, $('.audio-source-list'), $('.audio-source-add'));
+    audioSourceUI.save = () => settingsSaveOptions();
+
+    textToSpeechInitialize();
+}
+
+function textToSpeechInitialize() {
+    if (typeof speechSynthesis === 'undefined') { return; }
+
+    speechSynthesis.addEventListener('voiceschanged', () => updateTextToSpeechVoices(), false);
+    updateTextToSpeechVoices();
+
+    $('#text-to-speech-voice-test').on('click', () => textToSpeechTest());
+}
+
+function updateTextToSpeechVoices() {
+    const voices = Array.prototype.map.call(speechSynthesis.getVoices(), (voice, index) => ({voice, index}));
+    voices.sort(textToSpeechVoiceCompare);
+    if (voices.length > 0) {
+        $('#text-to-speech-voice-container').css('display', '');
+    }
+
+    const select = $('#text-to-speech-voice');
+    select.empty();
+    select.append($('<option>').val('').text('None'));
+    for (const {voice} of voices) {
+        select.append($('<option>').val(voice.voiceURI).text(`${voice.name} (${voice.lang})`));
+    }
+
+    select.val(select.attr('data-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; }
+    }
+
+    if (a.index < b.index) { return -1; }
+    if (a.index > b.index) { return 1; }
+    return 0;
+}
+
+function textToSpeechTest() {
+    try {
+        const text = $('#text-to-speech-voice-test').attr('data-speech-text') || '';
+        const voiceURI = $('#text-to-speech-voice').val();
+        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
+    }
+}