FakeChunkSource (ExoPlayer library)

java.lang.Object
- com.google.android.exoplayer2.testutil.FakeChunkSource

All Implemented Interfaces:

ChunkSource
```
public final class FakeChunkSource
extends Object
implements ChunkSource
```
Fake ChunkSource with adaptive media chunks of a given duration.

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class FakeChunkSource.Factory
Factory for a FakeChunkSource.

Nested Classes
Modifier and Type	Class	Description
`static class`	`FakeChunkSource.Factory`	Factory for a `FakeChunkSource`.

Constructor Summary

Constructors
Constructor Description

FakeChunkSource(ExoTrackSelection trackSelection, DataSource dataSource, FakeAdaptiveDataSet dataSet)

Constructors
Constructor	Description
`FakeChunkSource(ExoTrackSelection trackSelection, DataSource dataSource, FakeAdaptiveDataSet dataSet)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`getAdjustedSeekPositionUs(long positionUs, SeekParameters seekParameters)`	Adjusts a seek position given the specified `SeekParameters`.
`void`	`getNextChunk(long playbackPositionUs, long loadPositionUs, List<? extends MediaChunk> queue, ChunkHolder out)`	Returns the next chunk to load.
`int`	`getPreferredQueueSize(long playbackPositionUs, List<? extends MediaChunk> queue)`	Evaluates whether `MediaChunk`s should be removed from the back of the queue.
`void`	`maybeThrowError()`	If the source is currently having difficulty providing chunks, then this method throws the underlying error.
`void`	`onChunkLoadCompleted(Chunk chunk)`	Called when the `ChunkSampleStream` has finished loading a chunk obtained from this source.
`boolean`	`onChunkLoadError(Chunk chunk, boolean cancelable, Exception e, long exclusionDurationMs)`	Called when the `ChunkSampleStream` encounters an error loading a chunk obtained from this source.
`void`	`release()`	Releases any held resources.
`boolean`	`shouldCancelLoad(long playbackPositionUs, Chunk loadingChunk, List<? extends MediaChunk> queue)`	Returns whether an ongoing load of a chunk should be canceled.

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

- Constructor Detail
  - FakeChunkSource
```
public FakeChunkSource(ExoTrackSelection trackSelection,
                       DataSource dataSource,
                       FakeAdaptiveDataSet dataSet)
```
- Method Detail
  - getAdjustedSeekPositionUs
```
public long getAdjustedSeekPositionUs(long positionUs,
                                      SeekParameters seekParameters)
```
    Description copied from interface: ChunkSource
    
    Adjusts a seek position given the specified SeekParameters. Chunk boundaries are used as sync points.
    
    Specified by:
    
    getAdjustedSeekPositionUs in interface ChunkSource
    
    Parameters:
    
    positionUs - The seek position in microseconds.
    
    seekParameters - Parameters that control how the seek is performed.
    
    Returns:
    
    The adjusted seek position, in microseconds.
  - maybeThrowError
```
public void maybeThrowError()
```
    Description copied from interface: ChunkSource
    
    If the source is currently having difficulty providing chunks, then this method throws the underlying error. Otherwise does nothing.
    
    Specified by:
    
    maybeThrowError in interface ChunkSource
  - getPreferredQueueSize
```
public int getPreferredQueueSize(long playbackPositionUs,
                                 List<? extends MediaChunk> queue)
```
    Description copied from interface: ChunkSource
    
    Evaluates whether MediaChunks should be removed from the back of the queue.
    Removing MediaChunks from the back of the queue can be useful if they could be replaced with chunks of a significantly higher quality (e.g. because the available bandwidth has substantially increased).
    Will only be called if no MediaChunk in the queue is currently loading.
    
    Specified by:
    
    getPreferredQueueSize in interface ChunkSource
    
    Parameters:
    
    playbackPositionUs - The current playback position, in microseconds.
    
    queue - The queue of buffered MediaChunks.
    
    Returns:
    
    The preferred queue size.
  - shouldCancelLoad
```
public boolean shouldCancelLoad(long playbackPositionUs,
                                Chunk loadingChunk,
                                List<? extends MediaChunk> queue)
```
    Description copied from interface: ChunkSource
    
    Returns whether an ongoing load of a chunk should be canceled.
    
    Specified by:
    
    shouldCancelLoad in interface ChunkSource
    
    Parameters:
    
    playbackPositionUs - The current playback position, in microseconds.
    
    loadingChunk - The currently loading Chunk.
    
    queue - The queue of buffered MediaChunks.
    
    Returns:
    
    Whether the ongoing load of loadingChunk should be canceled.
  - getNextChunk
```
public void getNextChunk(long playbackPositionUs,
                         long loadPositionUs,
                         List<? extends MediaChunk> queue,
                         ChunkHolder out)
```
    Description copied from interface: ChunkSource
    
    Returns the next chunk to load.
    If a chunk is available then ChunkHolder.chunk is set. If the end of the stream has been reached then ChunkHolder.endOfStream is set. If a chunk is not available but the end of the stream has not been reached, the ChunkHolder is not modified.
    
    Specified by:
    
    getNextChunk in interface ChunkSource
    
    Parameters:
    
    playbackPositionUs - The current playback position in microseconds. If playback of the period to which this chunk source belongs has not yet started, the value will be the starting position in the period minus the duration of any media in previous periods still to be played.
    
    loadPositionUs - The current load position in microseconds. If queue is empty, this is the starting position from which chunks should be provided. Else it's equal to Chunk.endTimeUs of the last chunk in the queue.
    
    queue - The queue of buffered MediaChunks.
    
    out - A holder to populate.
  - onChunkLoadCompleted
```
public void onChunkLoadCompleted(Chunk chunk)
```
    Description copied from interface: ChunkSource
    
    Called when the ChunkSampleStream has finished loading a chunk obtained from this source.
    
    Specified by:
    
    onChunkLoadCompleted in interface ChunkSource
    
    Parameters:
    
    chunk - The chunk whose load has been completed.
  - onChunkLoadError
```
public boolean onChunkLoadError(Chunk chunk,
                                boolean cancelable,
                                Exception e,
                                long exclusionDurationMs)
```
    Description copied from interface: ChunkSource
    
    Called when the ChunkSampleStream encounters an error loading a chunk obtained from this source.
    
    Specified by:
    
    onChunkLoadError in interface ChunkSource
    
    Parameters:
    
    chunk - The chunk whose load encountered the error.
    
    cancelable - Whether the load can be canceled.
    
    e - The error.
    
    exclusionDurationMs - The duration for which the associated track may be excluded, or C.TIME_UNSET if the track may not be excluded.
    
    Returns:
    
    Whether the load should be canceled so that a replacement chunk can be loaded instead. Must be false if cancelable is false. If true, ChunkSource.getNextChunk(long, long, List, ChunkHolder) will be called to obtain the replacement chunk.
  - release
```
public void release()
```
    Description copied from interface: ChunkSource
    
    Releases any held resources.
    
    Specified by:
    
    release in interface ChunkSource

Class FakeChunkSource

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

FakeChunkSource

Method Detail

getAdjustedSeekPositionUs

maybeThrowError

getPreferredQueueSize

shouldCancelLoad

getNextChunk

onChunkLoadCompleted

onChunkLoadError

release