音ファイルをUnityにインポートしたときの自動設定エディタ拡張

using System.IO;
using UnityEditor;
using UnityEngine;

public class AudioImportSettings : AssetPostprocessor
{
    void OnPreprocessAudio()
    {
        var importer = assetImporter as AudioImporter;
        string fileName = Path.GetFileName(assetPath).ToLower(); // ファイル名のみ

        // 例: BGM 用にフォルダ判定
        if (fileName.StartsWith("bgm_"))
        {
            importer.forceToMono = false;
            //importer.loadInBackground = true;
            importer.loadInBackground = false;

            AudioImporterSampleSettings settings = importer.defaultSampleSettings;
            settings.loadType = AudioClipLoadType.Streaming;
            settings.compressionFormat = AudioCompressionFormat.Vorbis;
            settings.quality = 0.7f;
            settings.preloadAudioData = false;
            importer.defaultSampleSettings = settings;

            Debug.Log($"[BGM設定] {assetPath}");
        }
        // 例: 効果音用
        else if (fileName.StartsWith("se_"))
        {
            importer.forceToMono = true;
            importer.loadInBackground = false;

            AudioImporterSampleSettings settings = importer.defaultSampleSettings;
            settings.loadType = AudioClipLoadType.DecompressOnLoad;
            settings.compressionFormat = AudioCompressionFormat.ADPCM;
            settings.quality = 1f;
            settings.preloadAudioData = true;
            importer.defaultSampleSettings = settings;

            Debug.Log($"[SE設定] {assetPath}");
        }
    }
}