java.lang.Object
- com.google.android.exoplayer2.source.chunk.Chunk

All Implemented Interfaces:

Loader.Loadable

Direct Known Subclasses:

DataChunk, InitializationChunk, MediaChunk
```
public abstract class Chunk
extends Object
implements Loader.Loadable
```
An abstract base class for Loader.Loadable implementations that load chunks of data required for the playback of streams.

Field Summary

Fields
Modifier and Type	Field	Description
`protected StatsDataSource`	`dataSource`
`DataSpec`	`dataSpec`	The `DataSpec` that defines the data to be loaded.
`long`	`endTimeUs`	The end time of the media contained by the chunk, or `C.TIME_UNSET` if the data being loaded does not contain media samples.
`long`	`loadTaskId`	Identifies the load task for this loadable.
`long`	`startTimeUs`	The start time of the media contained by the chunk, or `C.TIME_UNSET` if the data being loaded does not contain media samples.
`Format`	`trackFormat`	The format of the track to which this chunk belongs.
`Object`	`trackSelectionData`	Optional data associated with the selection of the track to which this chunk belongs.
`@com.google.android.exoplayer2.C.SelectionReason int`	`trackSelectionReason`	One of the `selection reasons` if the chunk belongs to a track.
`@com.google.android.exoplayer2.C.DataType int`	`type`	The `data type` of the chunk.

Constructor Summary

Constructors
Constructor	Description
`Chunk(DataSource dataSource, DataSpec dataSpec, @com.google.android.exoplayer2.C.DataType int type, Format trackFormat, @com.google.android.exoplayer2.C.SelectionReason int trackSelectionReason, Object trackSelectionData, long startTimeUs, long endTimeUs)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`bytesLoaded()`	Returns the number of bytes that have been loaded.
`long`	`getDurationUs()`	Returns the duration of the chunk in microseconds.
`Map<String,List<String>>`	`getResponseHeaders()`	Returns the response headers associated with the last `DataSource.open(com.google.android.exoplayer2.upstream.DataSpec)` call.
`Uri`	`getUri()`	Returns the `Uri` associated with the last `DataSource.open(com.google.android.exoplayer2.upstream.DataSpec)` call.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.google.android.exoplayer2.upstream.Loader.Loadable
cancelLoad, load

- Field Detail
  - loadTaskId
```
public final long loadTaskId
```
    Identifies the load task for this loadable.
  - dataSpec
```
public final DataSpec dataSpec
```
    The DataSpec that defines the data to be loaded.
  - type
```
public final @com.google.android.exoplayer2.C.DataType int type
```
    The data type of the chunk. For reporting only.
  - trackFormat
```
public final Format trackFormat
```
    The format of the track to which this chunk belongs.
  - trackSelectionReason
```
public final @com.google.android.exoplayer2.C.SelectionReason int trackSelectionReason
```
    One of the selection reasons if the chunk belongs to a track. C.SELECTION_REASON_UNKNOWN if the chunk does not belong to a track, or if the selection reason is unknown.
  - trackSelectionData
```
@Nullable
public final Object trackSelectionData
```
    Optional data associated with the selection of the track to which this chunk belongs. Null if the chunk does not belong to a track, or if there is no associated track selection data.
  - startTimeUs
```
public final long startTimeUs
```
    The start time of the media contained by the chunk, or C.TIME_UNSET if the data being loaded does not contain media samples.
  - endTimeUs
```
public final long endTimeUs
```
    The end time of the media contained by the chunk, or C.TIME_UNSET if the data being loaded does not contain media samples.
  - dataSource
```
protected final StatsDataSource dataSource
```
- Constructor Detail
  - Chunk
```
public Chunk(DataSource dataSource,
             DataSpec dataSpec,
             @com.google.android.exoplayer2.C.DataType int type,
             Format trackFormat,
             @com.google.android.exoplayer2.C.SelectionReason int trackSelectionReason,
             @Nullable
             Object trackSelectionData,
             long startTimeUs,
             long endTimeUs)
```
    Parameters:
    
    dataSource - The source from which the data should be loaded.
    
    dataSpec - Defines the data to be loaded.
    
    type - See type.
    
    trackFormat - See trackFormat.
    
    trackSelectionReason - See trackSelectionReason.
    
    trackSelectionData - See trackSelectionData.
    
    startTimeUs - See startTimeUs.
    
    endTimeUs - See endTimeUs.
- Method Detail
  - getDurationUs
```
public final long getDurationUs()
```
    Returns the duration of the chunk in microseconds.
  - bytesLoaded
```
public final long bytesLoaded()
```
    Returns the number of bytes that have been loaded. Must only be called after the load completed, failed, or was canceled.
  - getUri
```
public final Uri getUri()
```
    Returns the Uri associated with the last DataSource.open(com.google.android.exoplayer2.upstream.DataSpec) call. If redirection occurred, this is the redirected uri. Must only be called after the load completed, failed, or was canceled.
    
    See Also:
    
    DataSource.getUri()
  - getResponseHeaders
```
public final Map<String,List<String>> getResponseHeaders()
```
    Returns the response headers associated with the last DataSource.open(com.google.android.exoplayer2.upstream.DataSpec) call. Must only be called after the load completed, failed, or was canceled.
    
    See Also:
    
    DataSource.getResponseHeaders()

Class Chunk

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.android.exoplayer2.upstream.Loader.Loadable

Field Detail

loadTaskId

dataSpec

type

trackFormat

trackSelectionReason

trackSelectionData

startTimeUs

endTimeUs

dataSource

Constructor Detail

Chunk

Method Detail

getDurationUs

bytesLoaded

getUri

getResponseHeaders