| 1 | +import { getRequestHeaders } from '../../../script.js'; |
| 2 | +import { splitRecursive } from '../../utils.js'; |
| 3 | +import { getPreviewString, saveTtsProviderSettings } from './index.js'; |
| 4 | +export { GoogleTranslateTtsProvider }; |
| 5 | + |
| 6 | +class GoogleTranslateTtsProvider { |
| 7 | + settings; |
| 8 | + voices = []; |
| 9 | + separator = ' . '; |
| 10 | + audioElement = document.createElement('audio'); |
| 11 | + |
| 12 | + defaultSettings = { |
| 13 | + region: '', |
| 14 | + voiceMap: {}, |
| 15 | + }; |
| 16 | + |
| 17 | + get settingsHtml() { |
| 18 | + return ''; |
| 19 | + } |
| 20 | + |
| 21 | + onSettingsChange() { |
| 22 | + this.voices = []; |
| 23 | + saveTtsProviderSettings(); |
| 24 | + } |
| 25 | + |
| 26 | + async loadSettings(settings) { |
| 27 | + // Populate Provider UI given input settings |
| 28 | + if (Object.keys(settings).length == 0) { |
| 29 | + console.info('Using default TTS Provider settings'); |
| 30 | + } |
| 31 | + |
| 32 | + // Only accept keys defined in defaultSettings |
| 33 | + this.settings = this.defaultSettings; |
| 34 | + |
| 35 | + for (const key in settings) { |
| 36 | + if (key in this.settings) { |
| 37 | + this.settings[key] = settings[key]; |
| 38 | + } else { |
| 39 | + throw `Invalid setting passed to TTS Provider: ${key}`; |
| 40 | + } |
| 41 | + } |
| 42 | + |
| 43 | + try { |
| 44 | + await this.checkReady(); |
| 45 | + console.debug('Google Translate TTS: Settings loaded'); |
| 46 | + } catch { |
| 47 | + console.debug('Google Translate TTS: Settings loaded, but not ready'); |
| 48 | + } |
| 49 | + } |
| 50 | + |
| 51 | + // Perform a simple readiness check by trying to fetch voiceIds |
| 52 | + async checkReady() { |
| 53 | + await this.fetchTtsVoiceObjects(); |
| 54 | + } |
| 55 | + |
| 56 | + async onRefreshClick() { |
| 57 | + await this.checkReady(); |
| 58 | + } |
| 59 | + |
| 60 | + //#################// |
| 61 | + // TTS Interfaces // |
| 62 | + //#################// |
| 63 | + |
| 64 | + async getVoice(voiceName) { |
| 65 | + if (this.voices.length == 0) { |
| 66 | + this.voices = await this.fetchTtsVoiceObjects(); |
| 67 | + } |
| 68 | + const match = this.voices.filter( |
| 69 | + voice => voice.name == voiceName || voice.voice_id == voiceName, |
| 70 | + )[0]; |
| 71 | + if (!match) { |
| 72 | + throw `TTS Voice name ${voiceName} not found`; |
| 73 | + } |
| 74 | + return match; |
| 75 | + } |
| 76 | + |
| 77 | + async generateTts(text, voiceId) { |
| 78 | + const response = await this.fetchTtsGeneration(text, voiceId); |
| 79 | + return response; |
| 80 | + } |
| 81 | + |
| 82 | + //###########// |
| 83 | + // API CALLS // |
| 84 | + //###########// |
| 85 | + async fetchTtsVoiceObjects() { |
| 86 | + const response = await fetch('/api/google/list-voices', { |
| 87 | + method: 'POST', |
| 88 | + headers: getRequestHeaders(), |
| 89 | + body: JSON.stringify({}), |
| 90 | + }); |
| 91 | + |
| 92 | + if (!response.ok) { |
| 93 | + throw new Error(`HTTP ${response.status}: ${await response.text()}`); |
| 94 | + } |
| 95 | + let responseJson = await response.json(); |
| 96 | + responseJson = Object.entries(responseJson) |
| 97 | + .sort((a, b) => a[1].localeCompare(b[1])) |
| 98 | + .map(x => ({ name: x[1], voice_id: x[0], preview_url: false, lang: x[0] })); |
| 99 | + return responseJson; |
| 100 | + } |
| 101 | + |
| 102 | + /** |
| 103 | + * Preview TTS for a given voice ID. |
| 104 | + * @param {string} id Voice ID |
| 105 | + */ |
| 106 | + async previewTtsVoice(id) { |
| 107 | + this.audioElement.pause(); |
| 108 | + this.audioElement.currentTime = 0; |
| 109 | + const voice = await this.getVoice(id); |
| 110 | + const text = getPreviewString(voice.lang); |
| 111 | + const response = await this.fetchTtsGeneration(text, id); |
| 112 | + if (!response.ok) { |
| 113 | + throw new Error(`HTTP ${response.status}: ${await response.text()}`); |
| 114 | + } |
| 115 | + |
| 116 | + const audio = await response.blob(); |
| 117 | + const url = URL.createObjectURL(audio); |
| 118 | + this.audioElement.src = url; |
| 119 | + this.audioElement.play(); |
| 120 | + this.audioElement.onended = () => URL.revokeObjectURL(url); |
| 121 | + } |
| 122 | + |
| 123 | + async fetchTtsGeneration(text, voiceId) { |
| 124 | + const response = await fetch('/api/google/generate-voice', { |
| 125 | + method: 'POST', |
| 126 | + headers: getRequestHeaders(), |
| 127 | + body: JSON.stringify({ |
| 128 | + text: splitRecursive(text, 200), |
| 129 | + voice: voiceId, |
| 130 | + }), |
| 131 | + }); |
| 132 | + |
| 133 | + if (!response.ok) { |
| 134 | + toastr.error(response.statusText, 'TTS Generation Failed'); |
| 135 | + throw new Error(`HTTP ${response.status}: ${await response.text()}`); |
| 136 | + } |
| 137 | + |
| 138 | + return response; |
| 139 | + } |
| 140 | +} |