Effective in 2026, to align with our trunk stable development model and ensure platform stability for the ecosystem, we will publish source code to AOSP in Q2 and Q4. For building and contributing to AOSP, we recommend utilizing android-latest-release instead of aosp-main. The android-latest-release manifest branch will always reference the most recent release pushed to AOSP. For more information, see Changes to AOSP.

SparseImageUtil.SparseInputStream

public static class SparseImageUtil.SparseInputStream
extends Object

java.lang.Object
↳	com.android.tradefed.util.SparseImageUtil.SparseInputStream

SparseInputStream read from upstream and detects the data format. If the upstream is a valid sparse data, it will unsparse it on the fly. Otherwise, it just passthrough as is.

Summary

Public constructors
`SparseInputStream(BufferedInputStream in, long originalSize)`

Public methods
`void`	`close()`
`boolean`	`isSparse()`
`int`	`read()`
`int`	`read(byte[] buf, int off, int len)`
`long`	`size()` Return the total number of bytes in the unsparsed image.

Public constructors

SparseInputStream

public SparseInputStream (BufferedInputStream in, 
                long originalSize)

Parameters
`in`	`BufferedInputStream`
`originalSize`	`long`

Public methods

close

public void close ()

isSparse

public boolean isSparse ()

Returns
`boolean`

read

public int read ()

Returns
`int`

read

public int read (byte[] buf, 
                int off, 
                int len)

Parameters
`buf`	`byte`
`off`	`int`
`len`	`int`

Returns
`int`

size

public long size ()

Return the total number of bytes in the unsparsed image.

Returns
`long`	mOriginalSize if underlying stream is already non-sparse.