Shaka Playerを使用したアダプティブコンテンツ（HLS/DASH）の再生

  
import * as React from 'react';
import {useRef, useState, useEffect} from 'react';
import {
  Platform,
  useWindowDimensions,
  View,
  StyleSheet,
  TouchableOpacity,
  Text,
} from 'react-native';

import {
  VideoPlayer,
  KeplerVideoSurfaceView,
  KeplerCaptionsView,
} from '@amazon-devices/react-native-w3cmedia';
import {ShakaPlayer, ShakaPlayerSettings} from './shakaplayer/ShakaPlayer';

// アプリからビデオの再生APIを手動で呼び出す場合は、falseに設定します。
const AUTOPLAY = true;

const DEFAULT_ABR_WIDTH: number = Platform.isTV ? 3840 : 1919;
const DEFAULT_ABR_HEIGHT: number = Platform.isTV ? 2160 : 1079;

const content = [
  {
    secure: 'false', // true： セキュアなビデオバッファーを使用します。false： 非セキュアなビデオバッファーを使用します。
    uri: 'https://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4',
    drm_scheme: '', // com.microsoft.playready, com.widevine.alpha
    drm_license_uri: '', // DRMライセンス取得サーバーのURL（コンテンツがDRMで保護されている場合にのみ必要）
  },
];

export const App = () => {
  const currShakaPlayerSettings = useRef<ShakaPlayerSettings>({
    secure: false, // 再生をセキュアモードまたは非セキュアモードで実行
    abrEnabled: true, // アダプティブビットレート（ABR）の切り替えを有効化
    abrMaxWidth: DEFAULT_ABR_WIDTH, // ABRで許容される最大幅
    abrMaxHeight: DEFAULT_ABR_HEIGHT, // ABRで許容される最大高さ
  });

  const player = useRef<any>(null);
  const videoPlayer = useRef<VideoPlayer | null>(null);
  const [playerSettings, setPlayerSettings] = useState<ShakaPlayerSettings>(
    currShakaPlayerSettings.current,
  );
  const [buttonPress, setButtonPress] = useState(false);
  const [nextContent, setNextContent] = useState({index: 0}); // { index: number }
  // 再レンダリングのためにnextContentの状態を追跡します。
  const nextContentRef = useRef<number>(0);
  // 全画面解像度でレンダリングします。
  const {width: deviceWidth, height: deviceHeight} = useWindowDimensions();

  useEffect(() => {
    if (nextContent.index !== nextContentRef.current) {
      nextContentRef.current = nextContent.index;
      // <Video>コンポーネントを強制的に再レンダリングします。
      initializeVideoPlayer();
      setNextContent((prev) => {
        return {...prev};
      });
    }
  }, [nextContent]);

  useEffect(() => {
    console.log('app：AppPreBuffering v13.0を開始します');
    initializeVideoPlayer();
  }, []);

  const onEnded = async () => {
    console.log('app：onEndedを受け取りました');
    player.current.unload();
    player.current = null;
    await videoPlayer.current?.deinitialize();
    removeEventListeners();
    onVideoUnMounted();
    setNextContent({index: (nextContent.index + 1) % content.length});
  };

  const onError = () => {
    console.log(`app： AppPreBuffering：エラーイベントリスナーが呼び出されました`);
  };

  const setUpEventListeners = (): void => {
    console.log('app：イベントリスナーをセットアップします');
    videoPlayer.current?.addEventListener('ended', onEnded);
    videoPlayer.current?.addEventListener('error', onError);
  };

  const removeEventListeners = (): void => {
    console.log('app：イベントリスナーを削除します');
    videoPlayer.current?.removeEventListener('ended', onEnded);
    videoPlayer.current?.removeEventListener('error', onError);
  };

  const initializeVideoPlayer = async () => {
    console.log('app：initializeVideoPlayerが呼び出されました');
    videoPlayer.current = new VideoPlayer();
    // @ts-ignore
    global.gmedia = videoPlayer.current;
    await videoPlayer.current.initialize();
    setUpEventListeners();
    videoPlayer.current!.autoplay = false;
    initializeShaka();
  };

  const onSurfaceViewCreated = (surfaceHandle: string): void => {
    console.log('app：サーフェスが作成されました');
    videoPlayer.current?.setSurfaceHandle(surfaceHandle);
    videoPlayer.current?.play();
  };

  const onSurfaceViewDestroyed = (surfaceHandle: string): void => {
    videoPlayer.current?.clearSurfaceHandle(surfaceHandle);
  };

  const onCaptionViewCreated = (captionsHandle: string): void => {
    console.log('app：キャプションビューが作成されました');
    videoPlayer.current?.setCaptionViewHandle(captionsHandle);
  };

  const initializeShaka = () => {
    console.log('app：initializePlayer() index = ', nextContent.index);
    if (videoPlayer.current !== null) {
      player.current = new ShakaPlayer(videoPlayer.current, playerSettings);
    }
    if (player.current !== null) {
      player.current.load(content[nextContent.index], AUTOPLAY);
    }
  };

  const onVideoUnMounted = (): void => {
    console.log('app：onVideoUnMounted');
    // @ts-ignore
    global.gmedia = null;
    videoPlayer.current = null;
  };

  if (!buttonPress) {
    return (
      <View style={styles.container}>
        <TouchableOpacity
          style={styles.button}
          onPress={() => {
            setButtonPress(true);
          }}
          hasTVPreferredFocus={true}
          activeOpacity={1}>
          <Text style={styles.buttonLabel}> Press to Play Video </Text>
        </TouchableOpacity>
      </View>
    );
  } else {
    return nextContent.index === nextContentRef.current ? (
      <View style={styles.videoContainer}>
        <KeplerVideoSurfaceView
          style={styles.surfaceView}
          onSurfaceViewCreated={onSurfaceViewCreated}
          onSurfaceViewDestroyed={onSurfaceViewDestroyed}
        />
        <KeplerCaptionsView
          onCaptionViewCreated={onCaptionViewCreated}
          style={styles.captionView}
        />
      </View>
    ) : (
      <View style={styles.videoContainer}></View>
    );
  }
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    flexDirection: 'column',
    backgroundColor: '#283593',
    justifyContent: 'center',
    alignItems: 'center',
  },
  button: {
    alignItems: 'center',
    backgroundColor: '#303030',
    borderColor: 'navy',
    borderRadius: 10,
    borderWidth: 1,
    paddingVertical: 12,
    paddingHorizontal: 32,
  },
  buttonLabel: {
    color: 'white',
    fontSize: 22,
    fontFamily: 'Amazon Ember',
  },
  videoContainer: {
    backgroundColor: 'white',
    alignItems: 'stretch',
  },
  surfaceView: {
    zIndex: 0,
  },
  captionView: {
    width: '100%',
    height: '100%',
    top: 0,
    left: 0,
    position: 'absolute',
    backgroundColor: 'transparent',
    flexDirection: 'column',
    alignItems: 'center',
    zIndex: 2,
  }
});

npm install
npm run build:app

node: /lib64/libm.so.6: version `GLIBC_2.27' not found (required by node)
node: /lib64/libc.so.6: version `GLIBC_2.28' not found (required by node)
Traceback (most recent call last):
  File "build/all.py", line 150, in <モジュール>
    shakaBuildHelpers.run_main(main)
  File "/local/home/rinoshs/prj/bz/tdpws/src/ReactNativeAmznW3CMedia-ShakaPlayer/tmp/shaka-rel/scripts/shaka-player/build/shakaBuildHelpers.py", line 350, in run_main
    sys.exit(main(sys.argv[1:]))
  File "build/all.py", line 95, in main
    if gendeps.main([]) != 0:
  File "/local/home/rinoshs/prj/bz/tdpws/src/ReactNativeAmznW3CMedia-ShakaPlayer/tmp/shaka-rel/scripts/shaka-player/build/gendeps.py", line 30, in main
    if not shakaBuildHelpers.update_node_modules():
  File "/local/home/rinoshs/prj/bz/tdpws/src/ReactNativeAmznW3CMedia-ShakaPlayer/tmp/shaka-rel/scripts/shaka-player/build/shakaBuildHelpers.py", line 330, in update_node_modules
    execute_get_output(['npm', 'ci'])
  File "/local/home/rinoshs/prj/bz/tdpws/src/ReactNativeAmznW3CMedia-ShakaPlayer/tmp/shaka-rel/scripts/shaka-player/build/shakaBuildHelpers.py", line 170, in execute_get_output
    raise subprocess.CalledProcessError(obj.returncode, args[0], stdout)
subprocess.CalledProcessError: Command 'npm' returned non-zero exit status 1

nvm use 16.20.2

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