@aituber-onair/core/dist/services/voice/engines/VoicePeakEngine.js

Core library for AITuber OnAir providing voice synthesis and chat processing

import { VOICEPEAK_API_URL } from '../../../constants';
/**
 * VoicePeak voice synthesis engine
 */
export class VoicePeakEngine {
    constructor() {
        this.apiEndpoint = VOICEPEAK_API_URL;
    }
    async fetchAudio(input, speaker) {
        const talk = input;
        const ttsQueryResponse = await fetch(`${this.apiEndpoint}/audio_query?speaker=${speaker}&text=${encodeURIComponent(talk.message)}`, { method: 'POST' });
        if (!ttsQueryResponse.ok) {
            throw new Error('Failed to fetch TTS query.');
        }
        const ttsQueryJson = await ttsQueryResponse.json();
        // set emotion from talk.style
        ttsQueryJson['emotion'] = this.mapEmotionStyle(talk.style || 'neutral');
        const synthesisResponse = await fetch(`${this.apiEndpoint}/synthesis?speaker=${speaker}`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify(ttsQueryJson),
        });
        if (!synthesisResponse.ok) {
            throw new Error('Failed to fetch TTS synthesis result.');
        }
        const blob = await synthesisResponse.blob();
        return await blob.arrayBuffer();
    }
    /**
     * Map emotion style to VoicePeak's emotion parameters
     */
    mapEmotionStyle(style) {
        switch (style.toLowerCase()) {
            case 'happy':
            case 'fun':
                return 'happy';
            case 'angry':
                return 'angry';
            case 'sad':
                return 'sad';
            default:
                return 'neutral';
        }
    }
    getTestMessage(textVoiceText) {
        return textVoiceText || 'ボイスピークを使用します';
    }
    /**
     * Set custom API endpoint URL
     * @param apiUrl custom API endpoint URL
     */
    setApiEndpoint(apiUrl) {
        this.apiEndpoint = apiUrl;
    }
}
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