com.google.android.exoplayer2.upstream.cache.CacheDataSource Java Examples

/**
 * Returns a new {@link CacheDataSource} instance. If {@code offline} is true, it can only read
 * data from the cache.
 */
public CacheDataSource buildCacheDataSource(boolean offline) {
  DataSource cacheReadDataSource = cacheReadDataSourceFactory != null
      ? cacheReadDataSourceFactory.createDataSource() : new FileDataSource();
  if (offline) {
    return new CacheDataSource(cache, DummyDataSource.INSTANCE,
        cacheReadDataSource, null, CacheDataSource.FLAG_BLOCK_ON_CACHE, null);
  } else {
    DataSink cacheWriteDataSink = cacheWriteDataSinkFactory != null
        ? cacheWriteDataSinkFactory.createDataSink()
        : new CacheDataSink(cache, CacheDataSource.DEFAULT_MAX_CACHE_FILE_SIZE);
    DataSource upstream = upstreamDataSourceFactory.createDataSource();
    upstream = priorityTaskManager == null ? upstream
        : new PriorityDataSource(upstream, priorityTaskManager, C.PRIORITY_DOWNLOAD);
    return new CacheDataSource(cache, upstream, cacheReadDataSource,
        cacheWriteDataSink, CacheDataSource.FLAG_BLOCK_ON_CACHE, null);
  }
}
 

/**
 * Returns a new {@link CacheDataSource} instance. If {@code offline} is true, it can only read
 * data from the cache.
 */
public CacheDataSource buildCacheDataSource(boolean offline) {
  DataSource cacheReadDataSource = cacheReadDataSourceFactory != null
      ? cacheReadDataSourceFactory.createDataSource() : new FileDataSource();
  if (offline) {
    return new CacheDataSource(cache, DummyDataSource.INSTANCE,
        cacheReadDataSource, null, CacheDataSource.FLAG_BLOCK_ON_CACHE, null);
  } else {
    DataSink cacheWriteDataSink = cacheWriteDataSinkFactory != null
        ? cacheWriteDataSinkFactory.createDataSink()
        : new CacheDataSink(cache, CacheDataSource.DEFAULT_MAX_CACHE_FILE_SIZE);
    DataSource upstream = upstreamDataSourceFactory.createDataSource();
    upstream = priorityTaskManager == null ? upstream
        : new PriorityDataSource(upstream, priorityTaskManager, C.PRIORITY_DOWNLOAD);
    return new CacheDataSource(cache, upstream, cacheReadDataSource,
        cacheWriteDataSink, CacheDataSource.FLAG_BLOCK_ON_CACHE, null);
  }
}
 

private void enableCache(int maxCacheSizeMb) {
    LeastRecentlyUsedCacheEvictor evictor = new LeastRecentlyUsedCacheEvictor(maxCacheSizeMb * 1024 * 1024);
    File file = new File(mContext.getCacheDir(), "media");
    Log.d("ZAQ", "enableCache (" + maxCacheSizeMb + " MB), file: " + file.getAbsolutePath());
    SimpleCache simpleCache = new SimpleCache(file, evictor);
    mDataSourceFactory = new CacheDataSourceFactory(
            simpleCache,
            mDataSourceFactory,
            new FileDataSourceFactory(),
            new CacheDataSinkFactory(simpleCache, 2 * 1024 * 1024),
            CacheDataSource.FLAG_BLOCK_ON_CACHE | CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR,
            new CacheDataSource.EventListener() {
                @Override
                public void onCacheIgnored(int reason) {
                    Log.d("ZAQ", "onCacheIgnored");
                }

                @Override
                public void onCachedBytesRead(long cacheSizeBytes, long cachedBytesRead) {
                    Log.d("ZAQ", "onCachedBytesRead , cacheSizeBytes: " + cacheSizeBytes + "   cachedBytesRead: " + cachedBytesRead);
                }
            });
}
 

private DataSource.Factory getCacheDataSourceFactory() {
    if (mCache == null) {
        mCache = newCache();
    }
    return new CacheDataSourceFactory(
            mCache,
            getDataSourceFactory(),
            CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR);
}
 

/**
 * 获取SourceFactory，是否带Cache
 */
private DataSource.Factory getDataSourceFactoryCache(Context context, boolean cacheEnable, boolean preview, File cacheDir, String uerAgent) {
    if (cacheEnable) {
        Cache cache = getCacheSingleInstance(context, cacheDir);
        if (cache != null) {
            isCached = resolveCacheState(cache, mDataSource);
            return new CacheDataSourceFactory(cache, getDataSourceFactory(context, preview, uerAgent), CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR);
        }
    }
    return getDataSourceFactory(context, preview, uerAgent);
}
 

@Override
public DataSource createDataSource() {
    LeastRecentlyUsedCacheEvictor evictor = new LeastRecentlyUsedCacheEvictor(maxCacheSize);
    SimpleCache simpleCache =
            new SimpleCache(new File(context.getCacheDir(), "media"), evictor);
    return new CacheDataSource(simpleCache, defaultDatasourceFactory.createDataSource(),
            new FileDataSource(), new CacheDataSink(simpleCache, maxFileSize),
            CacheDataSource.FLAG_BLOCK_ON_CACHE | CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR,
            null);
}
 

/** Returns a new {@link CacheDataSource} instance. */
public CacheDataSource createCacheDataSource() {
  return onlineCacheDataSourceFactory.createDataSource();
}
 

@Override
public void onCreate() {
    super.onCreate();

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        @SuppressLint("WrongConstant") NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_DEFAULT_CHANNEL_ID, getString(R.string.notification_channel_name), NotificationManagerCompat.IMPORTANCE_DEFAULT);
        NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.createNotificationChannel(notificationChannel);

        AudioAttributes audioAttributes = new AudioAttributes.Builder()
                .setUsage(AudioAttributes.USAGE_MEDIA)
                .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
                .build();
        audioFocusRequest = new AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN)
                .setOnAudioFocusChangeListener(audioFocusChangeListener)
                .setAcceptsDelayedFocusGain(false)
                .setWillPauseWhenDucked(true)
                .setAudioAttributes(audioAttributes)
                .build();
    }

    audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);

    mediaSession = new MediaSessionCompat(this, "PlayerService");
    mediaSession.setFlags(MediaSessionCompat.FLAG_HANDLES_MEDIA_BUTTONS | MediaSessionCompat.FLAG_HANDLES_TRANSPORT_CONTROLS);
    mediaSession.setCallback(mediaSessionCallback);

    Context appContext = getApplicationContext();

    Intent activityIntent = new Intent(appContext, MainActivity.class);
    mediaSession.setSessionActivity(PendingIntent.getActivity(appContext, 0, activityIntent, 0));

    Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON, null, appContext, MediaButtonReceiver.class);
    mediaSession.setMediaButtonReceiver(PendingIntent.getBroadcast(appContext, 0, mediaButtonIntent, 0));

    exoPlayer = ExoPlayerFactory.newSimpleInstance(this, new DefaultRenderersFactory(this), new DefaultTrackSelector(), new DefaultLoadControl());
    exoPlayer.addListener(exoPlayerListener);
    DataSource.Factory httpDataSourceFactory = new OkHttpDataSourceFactory(new OkHttpClient(), Util.getUserAgent(this, getString(R.string.app_name)));
    Cache cache = new SimpleCache(new File(this.getCacheDir().getAbsolutePath() + "/exoplayer"), new LeastRecentlyUsedCacheEvictor(1024 * 1024 * 100)); // 100 Mb max
    this.dataSourceFactory = new CacheDataSourceFactory(cache, httpDataSourceFactory, CacheDataSource.FLAG_BLOCK_ON_CACHE | CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR);
    this.extractorsFactory = new DefaultExtractorsFactory();
}
 

/** Returns a new {@link CacheDataSource} instance. */
public CacheDataSource createCacheDataSource() {
  return onlineCacheDataSourceFactory.createDataSource();
}
 

/** Returns a new {@link CacheDataSource} instance. */
public CacheDataSource createCacheDataSource() {
  return onlineCacheDataSourceFactory.createDataSource();
}
 

/**
 * Returns a new {@link CacheDataSource} instance which accesses cache read-only and throws an
 * exception on cache miss.
 */
public CacheDataSource createOfflineCacheDataSource() {
  return offlineCacheDataSourceFactory.createDataSource();
}
 

/**
 * Returns a new {@link CacheDataSource} instance which accesses cache read-only and throws an
 * exception on cache miss.
 */
public CacheDataSource createOfflineCacheDataSource() {
  return offlineCacheDataSourceFactory.createDataSource();
}
 

/**
 * Returns a new {@link CacheDataSource} instance which accesses cache read-only and throws an
 * exception on cache miss.
 */
public CacheDataSource createOfflineCacheDataSource() {
  return offlineCacheDataSourceFactory.createDataSource();
}