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-rw-r--r--ext/mixed/js/audio-system.js56
1 files changed, 35 insertions, 21 deletions
diff --git a/ext/mixed/js/audio-system.js b/ext/mixed/js/audio-system.js
index 45b733fc..3273f982 100644
--- a/ext/mixed/js/audio-system.js
+++ b/ext/mixed/js/audio-system.js
@@ -40,7 +40,7 @@ class TextToSpeechAudio {
}
}
- play() {
+ async play() {
try {
if (this._utterance === null) {
this._utterance = new SpeechSynthesisUtterance(this.text || '');
@@ -66,10 +66,10 @@ class TextToSpeechAudio {
}
class AudioSystem {
- constructor({getAudioUri}) {
- this._cache = new Map();
+ constructor({audioUriBuilder, useCache}) {
+ this._cache = useCache ? new Map() : null;
this._cacheSizeMaximum = 32;
- this._getAudioUri = getAudioUri;
+ this._audioUriBuilder = audioUriBuilder;
if (typeof speechSynthesis !== 'undefined') {
// speechSynthesis.getVoices() will not be populated unless some API call is made.
@@ -79,21 +79,31 @@ class AudioSystem {
async getDefinitionAudio(definition, sources, details) {
const key = `${definition.expression}:${definition.reading}`;
- const cacheValue = this._cache.get(definition);
- if (typeof cacheValue !== 'undefined') {
- const {audio, uri, source} = cacheValue;
- return {audio, uri, source};
+ const hasCache = (this._cache !== null);
+
+ if (hasCache) {
+ const cacheValue = this._cache.get(key);
+ if (typeof cacheValue !== 'undefined') {
+ const {audio, uri, source} = cacheValue;
+ const index = sources.indexOf(source);
+ if (index >= 0) {
+ return {audio, uri, index};
+ }
+ }
}
- for (const source of sources) {
+ for (let i = 0, ii = sources.length; i < ii; ++i) {
+ const source = sources[i];
const uri = await this._getAudioUri(definition, source, details);
if (uri === null) { continue; }
try {
- const audio = await this._createAudio(uri, details);
- this._cacheCheck();
- this._cache.set(key, {audio, uri, source});
- return {audio, uri, source};
+ const audio = await this._createAudio(uri);
+ if (hasCache) {
+ this._cacheCheck();
+ this._cache.set(key, {audio, uri, source});
+ }
+ return {audio, uri, index: i};
} catch (e) {
// NOP
}
@@ -102,7 +112,7 @@ class AudioSystem {
throw new Error('Could not create audio');
}
- createTextToSpeechAudio({text, voiceUri}) {
+ createTextToSpeechAudio(text, voiceUri) {
const voice = this._getTextToSpeechVoiceFromVoiceUri(voiceUri);
if (voice === null) {
throw new Error('Invalid text-to-speech voice');
@@ -114,20 +124,24 @@ class AudioSystem {
// NOP
}
- async _createAudio(uri, details) {
+ async _createAudio(uri) {
const ttsParameters = this._getTextToSpeechParameters(uri);
if (ttsParameters !== null) {
- if (typeof details === 'object' && details !== null) {
- if (details.tts === false) {
- throw new Error('Text-to-speech not permitted');
- }
- }
- return this.createTextToSpeechAudio(ttsParameters);
+ const {text, voiceUri} = ttsParameters;
+ return this.createTextToSpeechAudio(text, voiceUri);
}
return await this._createAudioFromUrl(uri);
}
+ _getAudioUri(definition, source, details) {
+ return (
+ this._audioUriBuilder !== null ?
+ this._audioUriBuilder.getUri(definition, source, details) :
+ null
+ );
+ }
+
_createAudioFromUrl(url) {
return new Promise((resolve, reject) => {
const audio = new Audio(url);