com.google.android.exoplayer2.upstream

Class DataSchemeDataSource

java.lang.Object

com.google.android.exoplayer2.upstream.DataSchemeDataSource

All Implemented Interfaces:

DataSource

public final class DataSchemeDataSource
extends java.lang.Object
implements DataSource

A DataSource for reading data URLs, as defined by RFC 2397.

Nested Class Summary

Nested classes/interfaces inherited from interface com.google.android.exoplayer2.upstream.DataSource

DataSource.Factory

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	SCHEME_DATA

Constructor Summary

Constructors

Constructor and Description
DataSchemeDataSource()

Method Summary

Modifier and Type	Method and Description
void	close() Closes the source.
android.net.Uri	getUri() When the source is open, returns the Uri from which data is being read.
long	open(DataSpec dataSpec) Opens the source to read the specified data.
int	read(byte[] buffer, int offset, int readLength) Reads up to length bytes of data and stores them into buffer, starting at index offset.

Methods inherited from class java.lang.Object

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

Field Detail

SCHEME_DATA

public static final java.lang.String SCHEME_DATA

See Also:

Constant Field Values

Constructor Detail

DataSchemeDataSource

public DataSchemeDataSource()

Method Detail

open

public long open(DataSpec dataSpec)
          throws java.io.IOException

Description copied from interface: DataSource

Opens the source to read the specified data.

Note: If an IOException is thrown, callers must still call DataSource.close() to ensure that any partial effects of the invocation are cleaned up.

Specified by:

open in interface DataSource

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 equals C.LENGTH_UNSET) this value is the resolved length of the request, or C.LENGTH_UNSET if the length is still unresolved. For all other requests, the value returned will be equal to the request's DataSpec.length.

Throws:

java.io.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.

read

public int read(byte[] buffer,
                int offset,
                int readLength)

Description copied from interface: DataSource

Reads up to length bytes of data and stores them into buffer, starting at index offset.

If length is zero then 0 is returned. Otherwise, if no data is available because the end of the opened range has been reached, then C.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 interface DataSource

Parameters:

buffer - The buffer into which the read data should be stored.

offset - The start offset into buffer at which data should be written.

readLength - The maximum number of bytes to read.

Returns:

The number of bytes read, or C.RESULT_END_OF_INPUT if no data is available because the end of the opened range has been reached.

getUri

public android.net.Uri getUri()

Description copied from interface: DataSource

When the source is open, returns the Uri from which data is being read. The returned Uri will be identical to the one passed DataSource.open(DataSpec) in the DataSpec unless redirection has occurred. If redirection has occurred, the Uri after redirection is returned.

Specified by:

getUri in interface DataSource

Returns:

The Uri from which data is being read, or null if the source is not open.

close

public void close()
           throws java.io.IOException

Description copied from interface: DataSource

Closes the source.

Note: This method must be called even if the corresponding call to DataSource.open(DataSpec) threw an IOException. See DataSource.open(DataSpec) for more details.

Specified by:

close in interface DataSource

Throws:

java.io.IOException - If an error occurs closing the source.