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.DataSource
wrapper allowing just-in-time resolution ofDataSpecs
.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
ResolvingDataSource.Factory
Deprecated.DataSource.Factory
forResolvingDataSource
instances.static interface
ResolvingDataSource.Resolver
Deprecated.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 void
addTransferListener(TransferListener transferListener)
Deprecated.Adds aTransferListener
to listen to data transfers.void
close()
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.Uri
getUri()
Deprecated.When the source is open, returns theUri
from which data is being read.long
open(DataSpec dataSpec)
Deprecated.Opens the source to read the specified data.int
read(byte[] buffer, int offset, int length)
Deprecated.Reads up tolength
bytes 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.Resolver
to resolve theDataSpecs
.
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Method Detail
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addTransferListener
public void addTransferListener(TransferListener transferListener)
Deprecated.Description copied from interface:DataSource
Adds aTransferListener
to listen to data transfers. This method is not thread-safe.- Specified by:
addTransferListener
in interfaceDataSource
- Parameters:
transferListener
- ATransferListener
.
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open
public long open(DataSpec dataSpec) throws IOException
Deprecated.Description copied from interface:DataSource
Opens the source to read the specified data. If anIOException
is 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 position
is within the resource, but therequested length
extends 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 position
is 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 position
is greater than the length of the resource, thenDataSource.open(com.google.android.exoplayer2.upstream.DataSpec)
will throw anIOException
for whichDataSourceException.isCausedByPositionOutOfRange(java.io.IOException)
will betrue
.
- Specified by:
open
in 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.length
equalsC.LENGTH_UNSET
) this value is the resolved length of the request, orC.LENGTH_UNSET
if 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.DataSourceException
can 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 IOException
Deprecated.Description copied from interface:DataReader
Reads up tolength
bytes of data from the input.If
readLength
is 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_INPUT
is 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:
read
in 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_INPUT
if the input has ended. This may be less thanlength
because 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:DataSource
When the source is open, returns theUri
from which data is being read. The returnedUri
will be identical to the one passedDataSource.open(DataSpec)
in theDataSpec
unless redirection has occurred. If redirection has occurred, theUri
after redirection is returned.- Specified by:
getUri
in interfaceDataSource
- Returns:
- The
Uri
from 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:DataSource
When 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:
getResponseHeaders
in interfaceDataSource
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close
public void close() throws IOException
Deprecated.Description copied from interface:DataSource
Closes the source. This method must be called even if the corresponding call toDataSource.open(DataSpec)
threw anIOException
.- Specified by:
close
in interfaceDataSource
- Throws:
IOException
- If an error occurs closing the source.
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