Class ResolvingDataSource
- java.lang.Object
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- com.google.android.exoplayer2.upstream.ResolvingDataSource
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- All Implemented Interfaces:
DataReader,DataSource
@Deprecated public final class ResolvingDataSource extends Object implements DataSource
Deprecated.com.google.android.exoplayer2 is deprecated. Please migrate to androidx.media3 (which contains the same ExoPlayer code). See the migration guide for more details, including a script to help with the migration.DataSourcewrapper allowing just-in-time resolution ofDataSpecs.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static classResolvingDataSource.FactoryDeprecated.DataSource.FactoryforResolvingDataSourceinstances.static interfaceResolvingDataSource.ResolverDeprecated.ResolvesDataSpecs.
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Constructor Summary
Constructors Constructor Description ResolvingDataSource(DataSource upstreamDataSource, ResolvingDataSource.Resolver resolver)Deprecated.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description voidaddTransferListener(TransferListener transferListener)Deprecated.Adds aTransferListenerto listen to data transfers.voidclose()Deprecated.Closes the source.Map<String,List<String>>getResponseHeaders()Deprecated.When the source is open, returns the response headers associated with the lastDataSource.open(com.google.android.exoplayer2.upstream.DataSpec)call.UrigetUri()Deprecated.When the source is open, returns theUrifrom which data is being read.longopen(DataSpec dataSpec)Deprecated.Opens the source to read the specified data.intread(byte[] buffer, int offset, int length)Deprecated.Reads up tolengthbytes of data from the input.
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Constructor Detail
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ResolvingDataSource
public ResolvingDataSource(DataSource upstreamDataSource, ResolvingDataSource.Resolver resolver)
Deprecated.- Parameters:
upstreamDataSource- The wrappedDataSource.resolver- TheResolvingDataSource.Resolverto resolve theDataSpecs.
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Method Detail
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addTransferListener
public void addTransferListener(TransferListener transferListener)
Deprecated.Description copied from interface:DataSourceAdds aTransferListenerto listen to data transfers. This method is not thread-safe.- Specified by:
addTransferListenerin interfaceDataSource- Parameters:
transferListener- ATransferListener.
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open
public long open(DataSpec dataSpec) throws IOException
Deprecated.Description copied from interface:DataSourceOpens the source to read the specified data. If anIOExceptionis thrown, callers must still callDataSource.close()to ensure that any partial effects of the invocation are cleaned up.The following edge case behaviors apply:
- If the
requested positionis within the resource, but therequested lengthextends beyond the end of the resource, thenDataSource.open(com.google.android.exoplayer2.upstream.DataSpec)will succeed and data from the requested position to the end of the resource will be made available throughDataReader.read(byte[], int, int). - If the
requested positionis equal to the length of the resource, thenDataSource.open(com.google.android.exoplayer2.upstream.DataSpec)will succeed, andDataReader.read(byte[], int, int)will immediately returnC.RESULT_END_OF_INPUT. - If the
requested positionis greater than the length of the resource, thenDataSource.open(com.google.android.exoplayer2.upstream.DataSpec)will throw anIOExceptionfor whichDataSourceException.isCausedByPositionOutOfRange(java.io.IOException)will betrue.
- Specified by:
openin interfaceDataSource- Parameters:
dataSpec- Defines the data to be read.- Returns:
- The number of bytes that can be read from the opened source. For unbounded requests
(i.e., requests where
DataSpec.lengthequalsC.LENGTH_UNSET) this value is the resolved length of the request, orC.LENGTH_UNSETif the length is still unresolved. For all other requests, the value returned will be equal to the request'sDataSpec.length. - Throws:
IOException- If an error occurs opening the source.DataSourceExceptioncan be thrown or used as a cause of the thrown exception to specify the reason of the error.
- If the
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read
public int read(byte[] buffer, int offset, int length) throws IOExceptionDeprecated.Description copied from interface:DataReaderReads up tolengthbytes of data from the input.If
readLengthis zero then 0 is returned. Otherwise, if no data is available because the end of the opened range has been reached, thenC.RESULT_END_OF_INPUTis returned. Otherwise, the call will block until at least one byte of data has been read and the number of bytes read is returned.- Specified by:
readin interfaceDataReader- Parameters:
buffer- A target array into which data should be written.offset- The offset into the target array at which to write.length- The maximum number of bytes to read from the input.- Returns:
- The number of bytes read, or
C.RESULT_END_OF_INPUTif the input has ended. This may be less thanlengthbecause the end of the input (or available data) was reached, the method was interrupted, or the operation was aborted early for another reason. - Throws:
IOException- If an error occurs reading from the input.
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getUri
@Nullable public Uri getUri()
Deprecated.Description copied from interface:DataSourceWhen the source is open, returns theUrifrom which data is being read. The returnedUriwill be identical to the one passedDataSource.open(DataSpec)in theDataSpecunless redirection has occurred. If redirection has occurred, theUriafter redirection is returned.- Specified by:
getUriin interfaceDataSource- Returns:
- The
Urifrom which data is being read, or null if the source is not open.
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getResponseHeaders
public Map<String,List<String>> getResponseHeaders()
Deprecated.Description copied from interface:DataSourceWhen the source is open, returns the response headers associated with the lastDataSource.open(com.google.android.exoplayer2.upstream.DataSpec)call. Otherwise, returns an empty map.Key look-up in the returned map is case-insensitive.
- Specified by:
getResponseHeadersin interfaceDataSource
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close
public void close() throws IOExceptionDeprecated.Description copied from interface:DataSourceCloses the source. This method must be called even if the corresponding call toDataSource.open(DataSpec)threw anIOException.- Specified by:
closein interfaceDataSource- Throws:
IOException- If an error occurs closing the source.
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