com.google.android.exoplayer2.source.dash.offline

Class DashDownloader

java.lang.Object

com.google.android.exoplayer2.offline.SegmentDownloader<DashManifest,RepresentationKey>

com.google.android.exoplayer2.source.dash.offline.DashDownloader

All Implemented Interfaces:

com.google.android.exoplayer2.offline.Downloader

public final class DashDownloader
extends com.google.android.exoplayer2.offline.SegmentDownloader<DashManifest,RepresentationKey>

Helper class to download DASH streams.

Except SegmentDownloader.getTotalSegments(), SegmentDownloader.getDownloadedSegments() and SegmentDownloader.getDownloadedBytes(), this class isn't thread safe.

Example usage:

 
 SimpleCache cache = new SimpleCache(downloadFolder, new NoOpCacheEvictor());
 DefaultHttpDataSourceFactory factory = new DefaultHttpDataSourceFactory("ExoPlayer", null);
 DownloaderConstructorHelper constructorHelper =
     new DownloaderConstructorHelper(cache, factory);
 DashDownloader dashDownloader = new DashDownloader(manifestUrl, constructorHelper);
 // Select the first representation of the first adaptation set of the first period
 dashDownloader.selectRepresentations(new RepresentationKey[] {new RepresentationKey(0, 0, 0)});
 dashDownloader.download(new ProgressListener() {
   {@literal @}Override
   public void onDownloadProgress(Downloader downloader, float downloadPercentage,
       long downloadedBytes) {
     // Invoked periodically during the download.
   }
 });
 // Access downloaded data using CacheDataSource
 CacheDataSource cacheDataSource =
     new CacheDataSource(cache, factory.createDataSource(), CacheDataSource.FLAG_BLOCK_ON_CACHE);
 

Nested Class Summary

Nested classes/interfaces inherited from class com.google.android.exoplayer2.offline.SegmentDownloader

com.google.android.exoplayer2.offline.SegmentDownloader.Segment

Nested classes/interfaces inherited from interface com.google.android.exoplayer2.offline.Downloader

com.google.android.exoplayer2.offline.Downloader.ProgressListener

Constructor Summary

Constructors

Constructor and Description
DashDownloader(android.net.Uri manifestUri, com.google.android.exoplayer2.offline.DownloaderConstructorHelper constructorHelper)

Method Summary

Modifier and Type	Method and Description
RepresentationKey[]	getAllRepresentationKeys()
protected DashManifest	getManifest(com.google.android.exoplayer2.upstream.DataSource dataSource, android.net.Uri uri)
protected java.util.List<com.google.android.exoplayer2.offline.SegmentDownloader.Segment>	getSegments(com.google.android.exoplayer2.upstream.DataSource dataSource, DashManifest manifest, RepresentationKey[] keys, boolean allowIndexLoadErrors)

Methods inherited from class com.google.android.exoplayer2.offline.SegmentDownloader

download, getDownloadedBytes, getDownloadedSegments, getDownloadPercentage, getManifest, getTotalSegments, init, remove, selectRepresentations

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DashDownloader

public DashDownloader(android.net.Uri manifestUri,
                      com.google.android.exoplayer2.offline.DownloaderConstructorHelper constructorHelper)

See Also:

SegmentDownloader.SegmentDownloader(Uri, DownloaderConstructorHelper)

Method Detail

getAllRepresentationKeys

public RepresentationKey[] getAllRepresentationKeys()
                                             throws java.io.IOException

Specified by:

getAllRepresentationKeys in class com.google.android.exoplayer2.offline.SegmentDownloader<DashManifest,RepresentationKey>

Throws:

java.io.IOException

getManifest

protected DashManifest getManifest(com.google.android.exoplayer2.upstream.DataSource dataSource,
                                   android.net.Uri uri)
                            throws java.io.IOException

Specified by:

getManifest in class com.google.android.exoplayer2.offline.SegmentDownloader<DashManifest,RepresentationKey>

Throws:

java.io.IOException

getSegments

protected java.util.List<com.google.android.exoplayer2.offline.SegmentDownloader.Segment> getSegments(com.google.android.exoplayer2.upstream.DataSource dataSource,
                                                                                                      DashManifest manifest,
                                                                                                      RepresentationKey[] keys,
                                                                                                      boolean allowIndexLoadErrors)
                                                                                               throws java.lang.InterruptedException,
                                                                                                      java.io.IOException

Specified by:

getSegments in class com.google.android.exoplayer2.offline.SegmentDownloader<DashManifest,RepresentationKey>

Throws:

java.lang.InterruptedException

java.io.IOException