NewPipe/app/src/main/java/org/schabi/newpipe/player/helper/CacheFactory.java

86 lines
3.6 KiB
Java

package org.schabi.newpipe.player.helper;
import android.content.Context;
import androidx.annotation.NonNull;
import android.util.Log;
import com.google.android.exoplayer2.upstream.DataSource;
import com.google.android.exoplayer2.upstream.DefaultDataSource;
import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
import com.google.android.exoplayer2.upstream.FileDataSource;
import com.google.android.exoplayer2.upstream.TransferListener;
import com.google.android.exoplayer2.upstream.cache.CacheDataSink;
import com.google.android.exoplayer2.upstream.cache.CacheDataSource;
import com.google.android.exoplayer2.upstream.cache.LeastRecentlyUsedCacheEvictor;
import com.google.android.exoplayer2.upstream.cache.SimpleCache;
import java.io.File;
/* package-private */ class CacheFactory implements DataSource.Factory {
private static final String TAG = "CacheFactory";
private static final String CACHE_FOLDER_NAME = "exoplayer";
private static final int CACHE_FLAGS = CacheDataSource.FLAG_BLOCK_ON_CACHE | CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR;
private final DefaultDataSourceFactory dataSourceFactory;
private final File cacheDir;
private final long maxFileSize;
// Creating cache on every instance may cause problems with multiple players when
// sources are not ExtractorMediaSource
// see: https://stackoverflow.com/questions/28700391/using-cache-in-exoplayer
// todo: make this a singleton?
private static SimpleCache cache;
public CacheFactory(@NonNull final Context context,
@NonNull final String userAgent,
@NonNull final TransferListener transferListener) {
this(context, userAgent, transferListener, PlayerHelper.getPreferredCacheSize(context),
PlayerHelper.getPreferredFileSize(context));
}
private CacheFactory(@NonNull final Context context,
@NonNull final String userAgent,
@NonNull final TransferListener transferListener,
final long maxCacheSize,
final long maxFileSize) {
this.maxFileSize = maxFileSize;
dataSourceFactory = new DefaultDataSourceFactory(context, userAgent, transferListener);
cacheDir = new File(context.getExternalCacheDir(), CACHE_FOLDER_NAME);
if (!cacheDir.exists()) {
//noinspection ResultOfMethodCallIgnored
cacheDir.mkdir();
}
if (cache == null) {
final LeastRecentlyUsedCacheEvictor evictor = new LeastRecentlyUsedCacheEvictor(maxCacheSize);
cache = new SimpleCache(cacheDir, evictor);
}
}
@Override
public DataSource createDataSource() {
Log.d(TAG, "initExoPlayerCache: cacheDir = " + cacheDir.getAbsolutePath());
final DefaultDataSource dataSource = dataSourceFactory.createDataSource();
final FileDataSource fileSource = new FileDataSource();
final CacheDataSink dataSink = new CacheDataSink(cache, maxFileSize);
return new CacheDataSource(cache, dataSource, fileSource, dataSink, CACHE_FLAGS, null);
}
public void tryDeleteCacheFiles() {
if (!cacheDir.exists() || !cacheDir.isDirectory()) return;
try {
for (File file : cacheDir.listFiles()) {
final String filePath = file.getAbsolutePath();
final boolean deleteSuccessful = file.delete();
Log.d(TAG, "tryDeleteCacheFiles: " + filePath + " deleted = " + deleteSuccessful);
}
} catch (Exception ignored) {
Log.e(TAG, "Failed to delete file.", ignored);
}
}
}