Initialization of the download logic

This commit is contained in:
CappielloAntonio 2021-12-31 21:36:50 +01:00
parent 6aafc7dfac
commit 9feaeec7cc
4 changed files with 526 additions and 21 deletions

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@ -0,0 +1,80 @@
package com.cappielloantonio.play.service;
import android.annotation.SuppressLint;
import android.app.Notification;
import android.content.Context;
import androidx.annotation.Nullable;
import androidx.media3.common.util.NotificationUtil;
import androidx.media3.common.util.Util;
import androidx.media3.exoplayer.offline.Download;
import androidx.media3.exoplayer.offline.DownloadManager;
import androidx.media3.exoplayer.offline.DownloadNotificationHelper;
import androidx.media3.exoplayer.scheduler.PlatformScheduler;
import androidx.media3.exoplayer.scheduler.Requirements;
import androidx.media3.exoplayer.scheduler.Scheduler;
import com.cappielloantonio.play.R;
import com.cappielloantonio.play.util.DownloadUtil;
import java.util.List;
@SuppressLint("UnsafeOptInUsageError")
public class DownloaderService extends androidx.media3.exoplayer.offline.DownloadService {
private static final int JOB_ID = 1;
private static final int FOREGROUND_NOTIFICATION_ID = 1;
@SuppressLint("UnsafeOptInUsageError")
public DownloaderService() {
super(FOREGROUND_NOTIFICATION_ID, DEFAULT_FOREGROUND_NOTIFICATION_UPDATE_INTERVAL, DownloadUtil.DOWNLOAD_NOTIFICATION_CHANNEL_ID, R.string.exo_download_notification_channel_name, 0);
}
@Override
protected DownloadManager getDownloadManager() {
DownloadManager downloadManager = DownloadUtil.getDownloadManager(this);
DownloadNotificationHelper downloadNotificationHelper = DownloadUtil.getDownloadNotificationHelper(this);
downloadManager.addListener(new TerminalStateNotificationHelper(this, downloadNotificationHelper, FOREGROUND_NOTIFICATION_ID + 1));
return downloadManager;
}
@Override
protected Scheduler getScheduler() {
return new PlatformScheduler(this, JOB_ID);
}
@Override
protected Notification getForegroundNotification(List<Download> downloads, @Requirements.RequirementFlags int notMetRequirements) {
return DownloadUtil.getDownloadNotificationHelper(this).buildProgressNotification(this, R.drawable.ic_download, null, null, downloads, notMetRequirements);
}
private static final class TerminalStateNotificationHelper implements DownloadManager.Listener {
private final Context context;
private final DownloadNotificationHelper notificationHelper;
private int nextNotificationId;
public TerminalStateNotificationHelper(Context context, DownloadNotificationHelper notificationHelper, int firstNotificationId) {
this.context = context.getApplicationContext();
this.notificationHelper = notificationHelper;
nextNotificationId = firstNotificationId;
}
@SuppressLint("UnsafeOptInUsageError")
@Override
public void onDownloadChanged(DownloadManager downloadManager, Download download, @Nullable Exception finalException) {
Notification notification;
if (download.state == Download.STATE_COMPLETED) {
notification = notificationHelper.buildDownloadCompletedNotification(context, R.drawable.ic_check_circle, null, Util.fromUtf8Bytes(download.request.data));
} else if (download.state == Download.STATE_FAILED) {
notification = notificationHelper.buildDownloadFailedNotification(context, R.drawable.ic_error, null, Util.fromUtf8Bytes(download.request.data));
} else {
return;
}
NotificationUtil.setNotification(context, nextNotificationId++, notification);
}
}
}

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@ -0,0 +1,372 @@
package com.cappielloantonio.play.service;
import static androidx.media3.common.util.Assertions.checkNotNull;
import static androidx.media3.common.util.Assertions.checkStateNotNull;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.DialogInterface;
import android.net.Uri;
import android.os.AsyncTask;
import android.widget.Toast;
import androidx.annotation.Nullable;
import androidx.fragment.app.FragmentManager;
import androidx.media3.common.DrmInitData;
import androidx.media3.common.Format;
import androidx.media3.common.MediaItem;
import androidx.media3.common.TrackGroup;
import androidx.media3.common.TrackGroupArray;
import androidx.media3.common.util.Log;
import androidx.media3.common.util.Util;
import androidx.media3.datasource.HttpDataSource;
import androidx.media3.exoplayer.RenderersFactory;
import androidx.media3.exoplayer.drm.DrmSession;
import androidx.media3.exoplayer.drm.DrmSessionEventListener;
import androidx.media3.exoplayer.drm.OfflineLicenseHelper;
import androidx.media3.exoplayer.offline.Download;
import androidx.media3.exoplayer.offline.DownloadCursor;
import androidx.media3.exoplayer.offline.DownloadHelper;
import androidx.media3.exoplayer.offline.DownloadIndex;
import androidx.media3.exoplayer.offline.DownloadManager;
import androidx.media3.exoplayer.offline.DownloadRequest;
import androidx.media3.exoplayer.offline.DownloadService;
import androidx.media3.exoplayer.trackselection.DefaultTrackSelector;
import androidx.media3.exoplayer.trackselection.MappingTrackSelector;
import java.io.IOException;
import java.util.HashMap;
import java.util.concurrent.CopyOnWriteArraySet;
public class DownloaderTracker {
public interface Listener {
void onDownloadsChanged();
}
private static final String TAG = "DownloadTracker";
private final Context context;
private final HttpDataSource.Factory httpDataSourceFactory;
private final CopyOnWriteArraySet<Listener> listeners;
private final HashMap<Uri, Download> downloads;
private final DownloadIndex downloadIndex;
private final DefaultTrackSelector.Parameters trackSelectorParameters;
@Nullable
private StartDownloadDialogHelper startDownloadDialogHelper;
@SuppressLint("UnsafeOptInUsageError")
public DownloaderTracker(Context context, HttpDataSource.Factory httpDataSourceFactory, DownloadManager downloadManager) {
this.context = context.getApplicationContext();
this.httpDataSourceFactory = httpDataSourceFactory;
listeners = new CopyOnWriteArraySet<>();
downloads = new HashMap<>();
downloadIndex = downloadManager.getDownloadIndex();
trackSelectorParameters = DownloadHelper.getDefaultTrackSelectorParameters(context);
downloadManager.addListener(new DownloadManagerListener());
loadDownloads();
}
@SuppressLint("UnsafeOptInUsageError")
public void addListener(Listener listener) {
checkNotNull(listener);
listeners.add(listener);
}
public void removeListener(Listener listener) {
listeners.remove(listener);
}
@SuppressLint("UnsafeOptInUsageError")
public boolean isDownloaded(MediaItem mediaItem) {
@Nullable Download download = downloads.get(checkNotNull(mediaItem.localConfiguration).uri);
return download != null && download.state != Download.STATE_FAILED;
}
@Nullable
public DownloadRequest getDownloadRequest(Uri uri) {
@Nullable Download download = downloads.get(uri);
return download != null && download.state != Download.STATE_FAILED ? download.request : null;
}
@SuppressLint("UnsafeOptInUsageError")
public void toggleDownload(FragmentManager fragmentManager, MediaItem mediaItem, RenderersFactory renderersFactory) {
@Nullable Download download = downloads.get(checkNotNull(mediaItem.localConfiguration).uri);
if (download != null && download.state != Download.STATE_FAILED) {
androidx.media3.exoplayer.offline.DownloadService.sendRemoveDownload(context, DownloaderService.class, download.request.id, false);
} else {
if (startDownloadDialogHelper != null) {
startDownloadDialogHelper.release();
}
startDownloadDialogHelper = new StartDownloadDialogHelper(fragmentManager, DownloadHelper.forMediaItem(context, mediaItem, renderersFactory, httpDataSourceFactory), mediaItem);
}
}
@SuppressLint("UnsafeOptInUsageError")
private void loadDownloads() {
try (DownloadCursor loadedDownloads = downloadIndex.getDownloads()) {
while (loadedDownloads.moveToNext()) {
Download download = loadedDownloads.getDownload();
downloads.put(download.request.uri, download);
}
} catch (IOException e) {
Log.w(TAG, "Failed to query downloads", e);
}
}
private class DownloadManagerListener implements DownloadManager.Listener {
@Override
public void onDownloadChanged(DownloadManager downloadManager, Download download, @Nullable Exception finalException) {
downloads.put(download.request.uri, download);
for (Listener listener : listeners) {
listener.onDownloadsChanged();
}
}
@Override
public void onDownloadRemoved(DownloadManager downloadManager, Download download) {
downloads.remove(download.request.uri);
for (Listener listener : listeners) {
listener.onDownloadsChanged();
}
}
}
private final class StartDownloadDialogHelper implements DownloadHelper.Callback, DialogInterface.OnClickListener, DialogInterface.OnDismissListener {
private final FragmentManager fragmentManager;
private final DownloadHelper downloadHelper;
private final MediaItem mediaItem;
private TrackSelectionDialog trackSelectionDialog;
private MappingTrackSelector.MappedTrackInfo mappedTrackInfo;
private WidevineOfflineLicenseFetchTask widevineOfflineLicenseFetchTask;
@Nullable
private byte[] keySetId;
@SuppressLint("UnsafeOptInUsageError")
public StartDownloadDialogHelper(FragmentManager fragmentManager, DownloadHelper downloadHelper, MediaItem mediaItem) {
this.fragmentManager = fragmentManager;
this.downloadHelper = downloadHelper;
this.mediaItem = mediaItem;
downloadHelper.prepare(this);
}
public void release() {
downloadHelper.release();
if (trackSelectionDialog != null) {
trackSelectionDialog.dismiss();
}
if (widevineOfflineLicenseFetchTask != null) {
widevineOfflineLicenseFetchTask.cancel(false);
}
}
@SuppressLint("UnsafeOptInUsageError")
@Override
public void onPrepared(DownloadHelper helper) {
@Nullable Format format = getFirstFormatWithDrmInitData(helper);
if (format == null) {
onDownloadPrepared(helper);
return;
}
// The content is DRM protected. We need to acquire an offline license.
if (Util.SDK_INT < 18) {
Toast.makeText(context, R.string.error_drm_unsupported_before_api_18, Toast.LENGTH_LONG).show();
Log.e(TAG, "Downloading DRM protected content is not supported on API versions below 18");
return;
}
if (!hasSchemaData(format.drmInitData)) {
Toast.makeText(context, R.string.download_start_error_offline_license, Toast.LENGTH_LONG).show();
Log.e(TAG, "Downloading content where DRM scheme data is not located in the manifest is not supported");
return;
}
widevineOfflineLicenseFetchTask = new WidevineOfflineLicenseFetchTask(format, mediaItem.localConfiguration.drmConfiguration, httpDataSourceFactory, this, helper);
widevineOfflineLicenseFetchTask.execute();
}
@SuppressLint("UnsafeOptInUsageError")
@Override
public void onPrepareError(DownloadHelper helper, IOException e) {
boolean isLiveContent = e instanceof DownloadHelper.LiveContentUnsupportedException;
int toastStringId = isLiveContent ? R.string.download_live_unsupported : R.string.download_start_error;
String logMessage = isLiveContent ? "Downloading live content unsupported" : "Failed to start download";
Toast.makeText(context, toastStringId, Toast.LENGTH_LONG).show();
Log.e(TAG, logMessage, e);
}
// DialogInterface.OnClickListener implementation.
@SuppressLint("UnsafeOptInUsageError")
@Override
public void onClick(DialogInterface dialog, int which) {
for (int periodIndex = 0; periodIndex < downloadHelper.getPeriodCount(); periodIndex++) {
downloadHelper.clearTrackSelections(periodIndex);
for (int i = 0; i < mappedTrackInfo.getRendererCount(); i++) {
if (!trackSelectionDialog.getIsDisabled(i)) {
downloadHelper.addTrackSelectionForSingleRenderer(periodIndex, i, trackSelectorParameters, trackSelectionDialog.getOverrides(i));
}
}
}
DownloadRequest downloadRequest = buildDownloadRequest();
if (downloadRequest.streamKeys.isEmpty()) {
// All tracks were deselected in the dialog. Don't start the download.
return;
}
startDownload(downloadRequest);
}
// DialogInterface.OnDismissListener implementation.
@SuppressLint("UnsafeOptInUsageError")
@Override
public void onDismiss(DialogInterface dialogInterface) {
trackSelectionDialog = null;
downloadHelper.release();
}
// Internal methods.
/**
* Returns the first {@link Format} with a non-null {@link Format#drmInitData} found in the
* content's tracks, or null if none is found.
*/
@SuppressLint("UnsafeOptInUsageError")
@Nullable
private Format getFirstFormatWithDrmInitData(DownloadHelper helper) {
for (int periodIndex = 0; periodIndex < helper.getPeriodCount(); periodIndex++) {
MappingTrackSelector.MappedTrackInfo mappedTrackInfo = helper.getMappedTrackInfo(periodIndex);
for (int rendererIndex = 0;
rendererIndex < mappedTrackInfo.getRendererCount();
rendererIndex++) {
TrackGroupArray trackGroups = mappedTrackInfo.getTrackGroups(rendererIndex);
for (int trackGroupIndex = 0; trackGroupIndex < trackGroups.length; trackGroupIndex++) {
TrackGroup trackGroup = trackGroups.get(trackGroupIndex);
for (int formatIndex = 0; formatIndex < trackGroup.length; formatIndex++) {
Format format = trackGroup.getFormat(formatIndex);
if (format.drmInitData != null) {
return format;
}
}
}
}
}
return null;
}
private void onOfflineLicenseFetched(DownloadHelper helper, byte[] keySetId) {
this.keySetId = keySetId;
onDownloadPrepared(helper);
}
private void onOfflineLicenseFetchedError(DrmSession.DrmSessionException e) {
Toast.makeText(context, R.string.download_start_error_offline_license, Toast.LENGTH_LONG)
.show();
Log.e(TAG, "Failed to fetch offline DRM license", e);
}
@SuppressLint("UnsafeOptInUsageError")
private void onDownloadPrepared(DownloadHelper helper) {
if (helper.getPeriodCount() == 0) {
Log.d(TAG, "No periods found. Downloading entire stream.");
startDownload();
downloadHelper.release();
return;
}
mappedTrackInfo = downloadHelper.getMappedTrackInfo(/* periodIndex= */ 0);
if (!TrackSelectionDialog.willHaveContent(mappedTrackInfo)) {
Log.d(TAG, "No dialog content. Downloading entire stream.");
startDownload();
downloadHelper.release();
return;
}
trackSelectionDialog = TrackSelectionDialog.createForMappedTrackInfoAndParameters(R.string.exo_download_description, mappedTrackInfo, trackSelectorParameters, false, true, this, this);
trackSelectionDialog.show(fragmentManager, null);
}
/**
* Returns whether any the {@link DrmInitData.SchemeData} contained in {@code drmInitData} has
* non-null {@link DrmInitData.SchemeData#data}.
*/
@SuppressLint("UnsafeOptInUsageError")
private boolean hasSchemaData(DrmInitData drmInitData) {
for (int i = 0; i < drmInitData.schemeDataCount; i++) {
if (drmInitData.get(i).hasData()) {
return true;
}
}
return false;
}
private void startDownload() {
startDownload(buildDownloadRequest());
}
@SuppressLint("UnsafeOptInUsageError")
private void startDownload(DownloadRequest downloadRequest) {
DownloadService.sendAddDownload(context, DownloaderService.class, downloadRequest, false);
}
@SuppressLint("UnsafeOptInUsageError")
private DownloadRequest buildDownloadRequest() {
return downloadHelper.getDownloadRequest(Util.getUtf8Bytes(checkNotNull(mediaItem.mediaMetadata.title.toString()))).copyWithKeySetId(keySetId);
}
}
private static final class WidevineOfflineLicenseFetchTask extends AsyncTask<Void, Void, Void> {
private final Format format;
private final MediaItem.DrmConfiguration drmConfiguration;
private final HttpDataSource.Factory httpDataSourceFactory;
private final StartDownloadDialogHelper dialogHelper;
private final DownloadHelper downloadHelper;
@Nullable
private byte[] keySetId;
@Nullable
private DrmSession.DrmSessionException drmSessionException;
public WidevineOfflineLicenseFetchTask(Format format, MediaItem.DrmConfiguration drmConfiguration, HttpDataSource.Factory httpDataSourceFactory, StartDownloadDialogHelper dialogHelper, DownloadHelper downloadHelper) {
this.format = format;
this.drmConfiguration = drmConfiguration;
this.httpDataSourceFactory = httpDataSourceFactory;
this.dialogHelper = dialogHelper;
this.downloadHelper = downloadHelper;
}
@SuppressLint("UnsafeOptInUsageError")
@Override
protected Void doInBackground(Void... voids) {
OfflineLicenseHelper offlineLicenseHelper = OfflineLicenseHelper.newWidevineInstance(drmConfiguration.licenseUri.toString(), drmConfiguration.forceDefaultLicenseUri, httpDataSourceFactory, drmConfiguration.licenseRequestHeaders, new DrmSessionEventListener.EventDispatcher());
try {
keySetId = offlineLicenseHelper.downloadLicense(format);
} catch (DrmSession.DrmSessionException e) {
drmSessionException = e;
} finally {
offlineLicenseHelper.release();
}
return null;
}
@SuppressLint("UnsafeOptInUsageError")
@Override
protected void onPostExecute(Void aVoid) {
if (drmSessionException != null) {
dialogHelper.onOfflineLicenseFetchedError(drmSessionException);
} else {
dialogHelper.onOfflineLicenseFetched(downloadHelper, checkStateNotNull(keySetId));
}
}
}
}

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@ -2,67 +2,98 @@ package com.cappielloantonio.play.util;
import android.annotation.SuppressLint;
import android.content.Context;
import android.util.Log;
import androidx.media3.common.util.Log;
import androidx.media3.database.DatabaseProvider;
import androidx.media3.database.ExoDatabaseProvider;
import androidx.media3.database.StandaloneDatabaseProvider;
import androidx.media3.datasource.DataSource;
import androidx.media3.datasource.DefaultDataSource;
import androidx.media3.datasource.DefaultHttpDataSource;
import androidx.media3.datasource.HttpDataSource;
import androidx.media3.datasource.cache.Cache;
import androidx.media3.datasource.cache.CacheDataSource;
import androidx.media3.datasource.cache.NoOpCacheEvictor;
import androidx.media3.datasource.cache.SimpleCache;
import androidx.media3.exoplayer.DefaultRenderersFactory;
import androidx.media3.exoplayer.RenderersFactory;
import androidx.media3.exoplayer.offline.ActionFileUpgradeUtil;
import androidx.media3.exoplayer.offline.DefaultDownloadIndex;
import androidx.media3.exoplayer.offline.DownloadManager;
import androidx.media3.exoplayer.offline.DownloadNotificationHelper;
import com.cappielloantonio.play.service.DownloaderTracker;
import java.io.File;
import java.io.IOException;
import java.net.CookieHandler;
import java.net.CookieManager;
import java.net.CookiePolicy;
import java.util.Map;
import java.util.concurrent.Executors;
public final class DownloadUtil {
public static final String DOWNLOAD_NOTIFICATION_CHANNEL_ID = "download_channel";
private static final String TAG = "DemoUtil";
private static final String DOWNLOAD_ACTION_FILE = "actions";
private static final String DOWNLOAD_TRACKER_ACTION_FILE = "tracked_actions";
private static final String DOWNLOAD_CONTENT_DIRECTORY = "downloads";
private static DataSource.Factory dataSourceFactory;
private static HttpDataSource.Factory httpDataSourceFactory;
private static DatabaseProvider databaseProvider;
private static File downloadDirectory;
private static Cache downloadCache;
private static DownloadManager downloadManager;
private static DownloaderTracker downloaderTracker;
private static DownloadNotificationHelper downloadNotificationHelper;
public static synchronized HttpDataSource.Factory getHttpDataSourceFactory() {
/**
* Returns whether extension renderers should be used.
*/
public static boolean useExtensionRenderers() {
return false;
}
@SuppressLint("UnsafeOptInUsageError")
public static RenderersFactory buildRenderersFactory(Context context, boolean preferExtensionRenderer) {
@DefaultRenderersFactory.ExtensionRendererMode
int extensionRendererMode = useExtensionRenderers()
? (preferExtensionRenderer
? DefaultRenderersFactory.EXTENSION_RENDERER_MODE_PREFER
: DefaultRenderersFactory.EXTENSION_RENDERER_MODE_ON)
: DefaultRenderersFactory.EXTENSION_RENDERER_MODE_OFF;
return new DefaultRenderersFactory(context.getApplicationContext()).setExtensionRendererMode(extensionRendererMode);
}
public static synchronized HttpDataSource.Factory getHttpDataSourceFactory(Context context) {
if (httpDataSourceFactory == null) {
CookieManager cookieManager = new CookieManager();
cookieManager.setCookiePolicy(CookiePolicy.ACCEPT_ORIGINAL_SERVER);
CookieHandler.setDefault(cookieManager);
httpDataSourceFactory = new HttpDataSource.Factory() {
@Override
public HttpDataSource createDataSource() {
return null;
}
@Override
public HttpDataSource.Factory setDefaultRequestProperties(Map<String, String> defaultRequestProperties) {
return null;
}
};
httpDataSourceFactory = new DefaultHttpDataSource.Factory();
}
return httpDataSourceFactory;
}
public static synchronized DataSource.Factory getDataSourceFactory(Context context) {
if (dataSourceFactory == null) {
context = context.getApplicationContext();
DefaultDataSource.Factory upstreamFactory = new DefaultDataSource.Factory(context, getHttpDataSourceFactory(context));
dataSourceFactory = buildReadOnlyCacheDataSource(upstreamFactory, getDownloadCache(context));
}
return dataSourceFactory;
}
@SuppressLint("UnsafeOptInUsageError")
public static synchronized DownloadNotificationHelper getDownloadNotificationHelper(Context context) {
if (downloadNotificationHelper == null) {
downloadNotificationHelper = new DownloadNotificationHelper(context, DOWNLOAD_NOTIFICATION_CHANNEL_ID);
}
return downloadNotificationHelper;
}
@ -71,13 +102,17 @@ public final class DownloadUtil {
return downloadManager;
}
public static synchronized DownloaderTracker getDownloadTracker(Context context) {
ensureDownloadManagerInitialized(context);
return downloaderTracker;
}
@SuppressLint("UnsafeOptInUsageError")
public static synchronized Cache getDownloadCache(Context context) {
private static synchronized Cache getDownloadCache(Context context) {
if (downloadCache == null) {
File downloadContentDirectory = new File(getDownloadDirectory(context), DOWNLOAD_CONTENT_DIRECTORY);
downloadCache = new SimpleCache(downloadContentDirectory, new NoOpCacheEvictor(), getDatabaseProvider(context));
}
return downloadCache;
}
@ -85,9 +120,10 @@ public final class DownloadUtil {
private static synchronized void ensureDownloadManagerInitialized(Context context) {
if (downloadManager == null) {
DefaultDownloadIndex downloadIndex = new DefaultDownloadIndex(getDatabaseProvider(context));
upgradeActionFile(context, DOWNLOAD_ACTION_FILE, downloadIndex, false);
upgradeActionFile(context, DOWNLOAD_ACTION_FILE, downloadIndex, /* addNewDownloadsAsCompleted= */ false);
upgradeActionFile(context, DOWNLOAD_TRACKER_ACTION_FILE, downloadIndex, true);
downloadManager = new DownloadManager(context, getDatabaseProvider(context), getDownloadCache(context), getHttpDataSourceFactory(), Executors.newFixedThreadPool(6));
downloadManager = new DownloadManager(context, getDatabaseProvider(context), getDownloadCache(context), getHttpDataSourceFactory(context), Executors.newFixedThreadPool(/* nThreads= */ 6));
downloaderTracker = new DownloaderTracker(context, getHttpDataSourceFactory(context), downloadManager);
}
}
@ -103,18 +139,27 @@ public final class DownloadUtil {
@SuppressLint("UnsafeOptInUsageError")
private static synchronized DatabaseProvider getDatabaseProvider(Context context) {
if (databaseProvider == null) {
databaseProvider = new ExoDatabaseProvider(context);
databaseProvider = new StandaloneDatabaseProvider(context);
}
return databaseProvider;
}
private static synchronized File getDownloadDirectory(Context context) {
if (downloadDirectory == null) {
downloadDirectory = context.getExternalFilesDir(null);
downloadDirectory = context.getExternalFilesDir(/* type= */ null);
if (downloadDirectory == null) {
downloadDirectory = context.getFilesDir();
}
}
return downloadDirectory;
}
private static CacheDataSource.Factory buildReadOnlyCacheDataSource(DataSource.Factory upstreamFactory, Cache cache) {
return new CacheDataSource.Factory()
.setCache(cache)
.setUpstreamDataSourceFactory(upstreamFactory)
.setCacheWriteDataSinkFactory(null)
.setFlags(CacheDataSource.FLAG_IGNORE_CACHE_ON_ERROR);
}
}