实现美颜

npm install facebetter

import {
  BeautyEffectEngine,
  EngineConfig,
  FrameType,
  MirrorMode,
  Reshape,
  SmoothingStyle,
  WhiteningStyle,
  LipstickColor,
  ChromaKeyColor,
  EngineEventCode,
  FacebetterError,
} from 'facebetter';

const licenseToken = await fetch('/api/facebetter/auth', { method: 'POST' }).then((r) => r.text());
const engine = new BeautyEffectEngine(new EngineConfig({ licenseToken }));

await engine.setLogConfig({
  consoleEnabled: true,
  fileEnabled: false,
  level: 2, // TRACE=0 … CRITICAL=5
});

await engine.init();

try {
  await engine.init();
} catch (error) {
  if (error instanceof FacebetterError) {
    console.error(error.code, error.message);
  }
  throw error;
}

engine.setSmoothing(0.8);
engine.setSmoothingStyle(SmoothingStyle.Natural);
engine.setWhitening(0.5);
engine.setWhiteningStyle(WhiteningStyle.ColdWhite);
engine.setSharpening(0.3);
engine.setRosiness(0.2);
engine.setBeautySkinOnly(true);

engine.setReshape(Reshape.FaceThin, 0.3);
engine.setReshape(Reshape.EyeSize, 0.2);

const bodyPack = new Uint8Array(
  await (await fetch('/resource_body.fbd')).arrayBuffer()
);
engine.addResourcePack(bodyPack);
engine.setBodyReshape(BodyReshape.WaistSlim, 0.4);
engine.setBodyReshape(BodyReshape.LegStretch, 0.3);
engine.setBodyReshape(BodyReshape.TorsoLong, 0.3);

engine.setLipstick(0.4);
engine.setLipstickColor(LipstickColor.Rouge);

engine.setBlush(0.3);
engine.setBlushStyle(/* BlushStyle.SunKissed */);
engine.setBlushColor(/* BlushColor.CoralPink */);

engine.setContour(0.4);
engine.setContourStyle(/* ContourStyle.Natural */);

engine.setEyeShadow(0.35);
engine.setEyeShadowStyle(/* EyeShadowStyle.Soft */);
engine.setEyeShadowColor(/* EyeShadowColor.Plum */);

engine.setEyeLiner(0.3);
engine.setEyeLinerStyle(/* ... */);
engine.setEyeLinerColor(/* ... */);

engine.setEyebrow(0.3);
engine.setEyebrowStyle(/* ... */);
engine.setEyebrowColor(/* ... */);

engine.setEyelash(0.3);
engine.setEyelashStyle(/* ... */);
engine.setEyelashColor(/* ... */);

engine.setPupil(0.4);
engine.setPupilColor(/* PupilColor.Hazel */);

engine.setFilter('/assets/filters/portrait/natural/natural.fbd');
engine.setFilterIntensity(0.8);
engine.clearFilter();

engine.setSticker('/stickers/face/fox.fbd');
engine.clearSticker();

const pack = new Uint8Array(
  await (await fetch('/resource_3d.fbd')).arrayBuffer()
);
engine.addResourcePack(pack);
engine.set3DSticker('/stickers/3d/oculos.fbd');
engine.clear3DSticker();

const bytes = new Uint8Array(await (await fetch('/filters/chuxin.fbd')).arrayBuffer());
engine.setFilter(bytes);

engine.setVirtualBackgroundBlur(0.6);          // [0, 1]；传 0 会关掉虚化
engine.setVirtualBackground('/background.jpg'); // 路径或 Uint8Array（png/jpg）
engine.clearVirtualBackground();

engine.setChromaKey(ChromaKeyColor.Green);
engine.setChromaKeySimilarity(0.4);
engine.setChromaKeySmoothness(0.2);
engine.setChromaKeyDesaturation(0.3);
engine.clearChromaKey();

engine.setCallbacks({
  onEngineEvent: (code, message) => {
    if (code === EngineEventCode.LicenseValidationSuccess) {
      console.log('license ok');
    } else if (code === EngineEventCode.LicenseValidationFailed) {
      console.error('license failed', message);
    } else if (code === EngineEventCode.InitializationComplete) {
      console.log('engine ready');
    } else if (code === EngineEventCode.InitializationFailed) {
      console.error('init failed', message);
    }
  },
  onFaceLandmarks: (faces) => {
    // faces[].rect, key_points, visibility, face_id, score, pitch, roll, yaw
  },
  maxFaces: 10,
});

const canvas = document.querySelector('canvas');
const ctx = canvas.getContext('2d');
const video = document.querySelector('video');

function loop() {
  if (engine.initialized && video.readyState >= 2) {
    const result = engine.processImage(
      video,
      video.videoWidth,
      video.videoHeight,
      FrameType.Video,
      MirrorMode.Horizontal, // 前置摄像头
    );
    if (result) {
      if (canvas.width !== result.width) canvas.width = result.width;
      if (canvas.height !== result.height) canvas.height = result.height;
      ctx.putImageData(result, 0, 0);
    }
  }
  requestAnimationFrame(loop);
}
loop();

const { fps, avgProcessTimeMs, sessionTimeS } = engine.getStats();

engine.destroy();