使用无头方法实现客户端广告插入

import {
  PlayerClientFactory,
  IPlayerClient,
  IPlayerSessionPositionListener,
} from '@amazon-devices/kepler-player-client';

import {
  IPlayerSessionId,
  IPlayerSessionMediaInfo,
  IPlayerSessionStatus,
  IPlayerSessionState,
} from '@amazon-devices/kepler-player-server';

// 播放器客户端引用
const playerClient = useRef<IPlayerClient | undefined>(undefined);       // 主要内容播放器客户端（已初始化）
const adPlayerClient = useRef<IPlayerClient | undefined>(undefined);     // 广告播放器客户端
const playerSessionId = useRef<IPlayerSessionId | undefined>(undefined); // 主会话ID
const adPlayerSessionId = useRef<IPlayerSessionId | undefined>(undefined); // 广告会话ID
const sessionIdCounter = useRef(1);

const positionListener: IPlayerSessionPositionListener = {
  onPositionUpdated: (updatedPosition) => {
    const currentTime = updatedPosition[0]?.position || 0;
    // 用于确定广告插播是否临近的应用特定逻辑
    if (adBreakApproaching(currentTime)) {
      initializeAdPlayer(adMediaInfo);
    }
  },
};

let adReady = false;

const onAdReady = () => {
  adReady = true;
  // 等待位置侦听器以检测广告开始时间
};

// 当达到广告开始时间且广告准备就绪时，侦听器就位：
if (adReady && currentTime >= adStartTime) {
  playerClient.current?.pause(playerSessionId.current);
}

await playerClient.current?.registerStatusListener({
  onSessionStatusChanged: (updatedStatus: Array<IPlayerSessionStatus>) => {
    const mainStatus = updatedStatus.find(
      s => s.sessionId?.id === playerSessionId.current?.id
    );
    if (mainStatus?.playbackState === IPlayerSessionState.PAUSED && adPlayerClient.current) {
      clearMainSurfaceHandle();
      setAdSurfaceHandle();
      adPlayerClient.current?.play(adPlayerSessionId.current);
    }
  }
}, playerSessionId.current);

const onAdEnded = async () => {
  await clearAdSurfaceHandle();
  cleanupAdPlayer();
  await setMainSurfaceHandle();
  await playerClient.current?.play(playerSessionId.current);
};

const cleanupAdPlayer = () => {
  if (!adPlayerClient.current) return;
  adPlayerClient.current.unloadSync(1000, adPlayerSessionId.current);
  adPlayerClient.current = undefined;
  adReady = false;
};

const cleanup = () => {
  if (adPlayerClient.current) {
    adPlayerClient.current.unloadSync(1000, adPlayerSessionId.current);
    adPlayerClient.current = undefined;
  }
  // 主播放器客户端清理工作通过您现有的拆解逻辑处理
};