content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.google.android.exoplayer2.upstream.cache;
  
  import com.google.android.exoplayer2.upstream.DataSink;
  import com.google.android.exoplayer2.upstream.DataSource;
  import com.google.android.exoplayer2.upstream.DataSource.Factory;
  import com.google.android.exoplayer2.upstream.FileDataSourceFactory;
  import com.google.android.exoplayer2.upstream.cache.CacheDataSource.EventListener;
  
  /**
   * A {@link DataSource.Factory} that produces {@link CacheDataSource}.
   */
  public final class CacheDataSourceFactory implements DataSource.Factory {
  
    private final Cache cache;
    private final DataSource.Factory upstreamFactory;
    private final DataSource.Factory cacheReadDataSourceFactory;
    private final DataSink.Factory cacheWriteDataSinkFactory;
    private final int flags;
    private final EventListener eventListener;
  
    /**
     * @see CacheDataSource#CacheDataSource(Cache, DataSource)
     */
    public CacheDataSourceFactory(Cache cache, DataSource.Factory upstreamFactory) {
      this(cache, upstreamFactory, 0);
    }
  
    /**
     * @see CacheDataSource#CacheDataSource(Cache, DataSource, int)
     */
    public CacheDataSourceFactory(Cache cache, DataSource.Factory upstreamFactory,
        @CacheDataSource.Flags int flags) {
      this(cache, upstreamFactory, flags, CacheDataSource.DEFAULT_MAX_CACHE_FILE_SIZE);
    }
  
    /**
     * @see CacheDataSource#CacheDataSource(Cache, DataSource, int, long)
     */
    public CacheDataSourceFactory(Cache cache, DataSource.Factory upstreamFactory,
        @CacheDataSource.Flags int flags, long maxCacheFileSize) {
      this(cache, upstreamFactory, new FileDataSourceFactory(),
          new CacheDataSinkFactory(cache, maxCacheFileSize), flags, null);
    }
  
    /**
     * @see CacheDataSource#CacheDataSource(Cache, DataSource, DataSource, DataSink, int,
     *     EventListener)
     */
    public CacheDataSourceFactory(Cache cache, Factory upstreamFactory,
        Factory cacheReadDataSourceFactory, DataSink.Factory cacheWriteDataSinkFactory,
        @CacheDataSource.Flags int flags, EventListener eventListener) {
      this.cache = cache;
      this.upstreamFactory = upstreamFactory;
      this.cacheReadDataSourceFactory = cacheReadDataSourceFactory;
      this.cacheWriteDataSinkFactory = cacheWriteDataSinkFactory;
      this.flags = flags;
      this.eventListener = eventListener;
    }
  
    @Override
    public CacheDataSource createDataSource() {
      return new CacheDataSource(cache, upstreamFactory.createDataSource(),
          cacheReadDataSourceFactory.createDataSource(),
          cacheWriteDataSinkFactory != null ? cacheWriteDataSinkFactory.createDataSink() : null,
          flags, eventListener);
    }
  
  }
  