ParsableNalUnitBitArray (ExoPlayer library)

java.lang.Object
- com.google.android.exoplayer2.util.ParsableNalUnitBitArray

```
public final class ParsableNalUnitBitArray
extends Object
```
Wraps a byte array, providing methods that allow it to be read as a NAL unit bitstream.
Whenever the byte sequence [0, 0, 3] appears in the wrapped byte array, it is treated as [0, 0] for all reading/skipping operations, which makes the bitstream appear to be unescaped.

Constructor Summary

Constructors
Constructor Description

ParsableNalUnitBitArray(byte[] data, int offset, int limit)

Constructors
Constructor	Description
`ParsableNalUnitBitArray(byte[] data, int offset, int limit)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`canReadBits(int numBits)`	Returns whether it's possible to read `n` bits starting from the current offset.
`boolean`	`canReadExpGolombCodedNum()`	Returns whether it is possible to read an Exp-Golomb-coded integer starting from the current offset.
`boolean`	`readBit()`	Reads a single bit.
`int`	`readBits(int numBits)`	Reads up to 32 bits.
`int`	`readSignedExpGolombCodedInt()`	Reads an signed Exp-Golomb-coded format integer.
`int`	`readUnsignedExpGolombCodedInt()`	Reads an unsigned Exp-Golomb-coded format integer.
`void`	`reset(byte[] data, int offset, int limit)`	Resets the wrapped data, limit and offset.
`void`	`skipBit()`	Skips a single bit.
`void`	`skipBits(int numBits)`	Skips bits and moves current reading position forward.

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

- Constructor Detail
  - ParsableNalUnitBitArray
```
public ParsableNalUnitBitArray(byte[] data,
                               int offset,
                               int limit)
```
    Parameters:
    
    data - The data to wrap.
    
    offset - The byte offset in data to start reading from.
    
    limit - The byte offset of the end of the bitstream in data.
- Method Detail
  - reset
```
public void reset(byte[] data,
                  int offset,
                  int limit)
```
    Resets the wrapped data, limit and offset.
    
    Parameters:
    
    data - The data to wrap.
    
    offset - The byte offset in data to start reading from.
    
    limit - The byte offset of the end of the bitstream in data.
  - skipBit
```
public void skipBit()
```
    Skips a single bit.
  - skipBits
```
public void skipBits(int numBits)
```
    Skips bits and moves current reading position forward.
    
    Parameters:
    
    numBits - The number of bits to skip.
  - canReadBits
```
public boolean canReadBits(int numBits)
```
    Returns whether it's possible to read n bits starting from the current offset. The offset is not modified.
    
    Parameters:
    
    numBits - The number of bits.
    
    Returns:
    
    Whether it is possible to read n bits.
  - readBit
```
public boolean readBit()
```
    Reads a single bit.
    
    Returns:
    
    Whether the bit is set.
  - readBits
```
public int readBits(int numBits)
```
    Reads up to 32 bits.
    
    Parameters:
    
    numBits - The number of bits to read.
    
    Returns:
    
    An integer whose bottom n bits hold the read data.
  - canReadExpGolombCodedNum
```
public boolean canReadExpGolombCodedNum()
```
    Returns whether it is possible to read an Exp-Golomb-coded integer starting from the current offset. The offset is not modified.
    
    Returns:
    
    Whether it is possible to read an Exp-Golomb-coded integer.
  - readUnsignedExpGolombCodedInt
```
public int readUnsignedExpGolombCodedInt()
```
    Reads an unsigned Exp-Golomb-coded format integer.
    
    Returns:
    
    The value of the parsed Exp-Golomb-coded integer.
  - readSignedExpGolombCodedInt
```
public int readSignedExpGolombCodedInt()
```
    Reads an signed Exp-Golomb-coded format integer.
    
    Returns:
    
    The value of the parsed Exp-Golomb-coded integer.

Class ParsableNalUnitBitArray

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ParsableNalUnitBitArray

Method Detail

reset

skipBit

skipBits

canReadBits

readBit

readBits

canReadExpGolombCodedNum

readUnsignedExpGolombCodedInt

readSignedExpGolombCodedInt