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/*
* 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 org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.cache;
import androidx.annotation.Nullable;
import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSink;
import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.DataSource;
import org.mozilla.thirdparty.com.google.android.exoplayer2.upstream.FileDataSource;
/** 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;
@CacheDataSource.Flags private final int flags;
@Nullable private final DataSink.Factory cacheWriteDataSinkFactory;
@Nullable private final CacheDataSource.EventListener eventListener;
@Nullable private final CacheKeyFactory cacheKeyFactory;
/**
* Constructs a factory which creates {@link CacheDataSource} instances with default {@link
* DataSource} and {@link DataSink} instances for reading and writing the cache.
*
* @param cache The cache.
* @param upstreamFactory A {@link DataSource.Factory} for creating upstream {@link DataSource}s
* for reading data not in the cache.
*/
public CacheDataSourceFactory(Cache cache, DataSource.Factory upstreamFactory) {
this(cache, upstreamFactory, /* flags= */ 0);
}
/** @see CacheDataSource#CacheDataSource(Cache, DataSource, int) */
public CacheDataSourceFactory(
Cache cache, DataSource.Factory upstreamFactory, @CacheDataSource.Flags int flags) {
this(
cache,
upstreamFactory,
new FileDataSource.Factory(),
new CacheDataSinkFactory(cache, CacheDataSink.DEFAULT_FRAGMENT_SIZE),
flags,
/* eventListener= */ null);
}
/**
* @see CacheDataSource#CacheDataSource(Cache, DataSource, DataSource, DataSink, int,
* CacheDataSource.EventListener)
*/
public CacheDataSourceFactory(
Cache cache,
DataSource.Factory upstreamFactory,
DataSource.Factory cacheReadDataSourceFactory,
@Nullable DataSink.Factory cacheWriteDataSinkFactory,
@CacheDataSource.Flags int flags,
@Nullable CacheDataSource.EventListener eventListener) {
this(
cache,
upstreamFactory,
cacheReadDataSourceFactory,
cacheWriteDataSinkFactory,
flags,
eventListener,
/* cacheKeyFactory= */ null);
}
/**
* @see CacheDataSource#CacheDataSource(Cache, DataSource, DataSource, DataSink, int,
* CacheDataSource.EventListener, CacheKeyFactory)
*/
public CacheDataSourceFactory(
Cache cache,
DataSource.Factory upstreamFactory,
DataSource.Factory cacheReadDataSourceFactory,
@Nullable DataSink.Factory cacheWriteDataSinkFactory,
@CacheDataSource.Flags int flags,
@Nullable CacheDataSource.EventListener eventListener,
@Nullable CacheKeyFactory cacheKeyFactory) {
this.cache = cache;
this.upstreamFactory = upstreamFactory;
this.cacheReadDataSourceFactory = cacheReadDataSourceFactory;
this.cacheWriteDataSinkFactory = cacheWriteDataSinkFactory;
this.flags = flags;
this.eventListener = eventListener;
this.cacheKeyFactory = cacheKeyFactory;
}
@Override
public CacheDataSource createDataSource() {
return new CacheDataSource(
cache,
upstreamFactory.createDataSource(),
cacheReadDataSourceFactory.createDataSource(),
cacheWriteDataSinkFactory == null ? null : cacheWriteDataSinkFactory.createDataSink(),
flags,
eventListener,
cacheKeyFactory);
}
}
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