71 lines
2.0 KiB
TypeScript
71 lines
2.0 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 = import.meta.env["VOICEVOX_HOST"];
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const VOICEVOX_STYLE_ID = parseInt(import.meta.env["VOICEVOX_STYLE_ID"] ?? "0");
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interface VoiceStyle {
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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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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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console.log(`TTS生成開始: ${itemId}`);
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const encodedText = encodeURIComponent(scriptText);
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const queryUrl = `${VOICEVOX_HOST}/audio_query?text=${encodedText}&speaker=${defaultVoiceStyle.styleId}`;
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const synthesisUrl = `${VOICEVOX_HOST}/synthesis?speaker=${defaultVoiceStyle.styleId}`;
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const queryResponse = await fetch(queryUrl, {
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method: "POST",
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headers: {
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"Content-Type": "application/json",
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Accept: "application/json",
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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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console.log(`音声合成開始: ${itemId}`);
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const audioResponse = await fetch(synthesisUrl, {
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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(audioQuery),
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});
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if (!audioResponse.ok) {
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console.error(`音声合成失敗: ${itemId}`);
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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); // Use the provided filename directly
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console.log(`音声ファイル保存開始: ${filePath}`);
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fs.writeFileSync(filePath, audioBuffer);
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console.log(`音声ファイル保存完了: ${filePath}`);
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return filePath;
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}
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