저사양 기기 분류 기준

Android 분류 기준

iOS / iPadOS 분류 기준

데스크탑 / 노트북 PPI-975 추가

리소스 선택 결과

핵심 코드

// apps/web/lib/utils.ts

async function _checkDesktopDecodingCapability(): Promise<boolean> {
  if (!("mediaCapabilities" in navigator)) return false;
  try {
    const result = await navigator.mediaCapabilities.decodingInfo({
      type: "file",
      video: { contentType: "video/mp4; codecs=avc1.42E01E",
               width: 1280, height: 720, bitrate: 1_000_000, framerate: 30 },
    });
    console.log("[LowPerf] decodingInfo:", {
      supported: result.supported, smooth: result.smooth, powerEfficient: result.powerEfficient,
    });
    // powerEfficient=true(하드웨어 가속)이면 고사양으로 판정
    return !result.smooth && !result.powerEfficient;
  } catch { return false; }
}

export async function initLowPerformanceDevice(): Promise<boolean> {
  if (_lowPerfCache !== null) return _lowPerfCache;
  if (!_lowPerfPromise) {
    _lowPerfPromise = (async () => {
      const syncResult = _computeSyncLowPerf(); // Android/iOS
      const isDesktop =
        !/Android|iPad|iPhone|iPod/i.test(navigator.userAgent) &&
        !(navigator.platform === "MacIntel" && navigator.maxTouchPoints > 1);
      const result =
        syncResult || (isDesktop && await _checkDesktopDecodingCapability());
      _lowPerfCache = result;
      console.log("[LowPerf] result:", { isLowPerformanceDevice: result,
        ua: navigator.userAgent, platform: navigator.platform,
        hardwareConcurrency: navigator.hardwareConcurrency,
        deviceMemory: (navigator as any).deviceMemory ?? "unknown" });
      return result;
    })();
  }
  return _lowPerfPromise;
}