72 lines
1.9 KiB
TypeScript
72 lines
1.9 KiB
TypeScript
import fs from "fs";
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import path from "path";
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// VOICEVOX APIの設定
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const VOICEVOX_HOST = process.env.VOICEVOX_HOST ?? "http://localhost:50021";
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const VOICEVOX_SPEAKER_ID = parseInt(process.env.VOICEVOX_SPEAKER_ID ?? "3");
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const VOICEVOX_STYLE_ID = parseInt(process.env.VOICEVOX_STYLE_ID ?? "2");
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interface VoiceStyle {
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speakerId: number;
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styleId: number;
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}
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// 環境変数からデフォルトの声設定を取得
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const defaultVoiceStyle: VoiceStyle = {
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speakerId: VOICEVOX_SPEAKER_ID,
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styleId: VOICEVOX_STYLE_ID,
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};
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export async function generateTTS(
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itemId: string,
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scriptText: string,
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): Promise<string> {
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// 音声合成クエリの生成
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const queryResponse = await fetch(`${VOICEVOX_HOST}/audio_query`, {
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method: "POST",
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headers: {
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"Content-Type": "application/json",
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},
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body: JSON.stringify({
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text: scriptText,
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speaker: defaultVoiceStyle.speakerId,
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}),
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});
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if (!queryResponse.ok) {
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throw new Error("VOICEVOX 音声合成クエリ生成に失敗しました");
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}
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const audioQuery = await queryResponse.json();
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// 音声合成
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const audioResponse = await fetch(`${VOICEVOX_HOST}/synthesis`, {
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method: "POST",
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headers: {
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"Content-Type": "application/json",
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},
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body: JSON.stringify({
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audio_query: audioQuery,
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speaker: defaultVoiceStyle.speakerId,
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}),
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});
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if (!audioResponse.ok) {
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throw new Error("VOICEVOX 音声合成に失敗しました");
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}
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const audioArrayBuffer = await audioResponse.arrayBuffer();
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const audioBuffer = Buffer.from(audioArrayBuffer);
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// 出力ディレクトリの準備
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const outputDir = path.join(__dirname, "../public/podcast_audio");
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if (!fs.existsSync(outputDir)) {
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fs.mkdirSync(outputDir, { recursive: true });
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}
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const filePath = path.resolve(outputDir, `${itemId}.mp3`);
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fs.writeFileSync(filePath, audioBuffer);
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return filePath;
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}
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