IStreamReader (OpenCV 4.12.0 Java documentation)

java.lang.Object
- org.opencv.videoio.IStreamReader

public class IStreamReader
extends java.lang.Object

Read data stream interface

Field Summary

Fields
Modifier and Type Field Description

protected long nativeObj

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`IStreamReader()`	Constructor of streaming callback object with abstract 'read' and 'seek' methods that should be implemented in Java code. NOTE: Implemented callbacks should be called from the creation thread to avoid JNI performance degradation
`protected`	`IStreamReader(long addr)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static IStreamReader`	`__fromPtr__(long addr)`
`protected void`	`finalize()`
`long`	`getNativeObjAddr()`
`long`	`read(byte[] buffer, long size)`	Read bytes from stream
`long`	`seek(long offset, int origin)`	Sets the stream position

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

- Field Detail
  - nativeObj
```
protected final long nativeObj
```
- Constructor Detail
  - IStreamReader
```
protected IStreamReader(long addr)
```
  - IStreamReader
```
protected IStreamReader()
```
    Constructor of streaming callback object with abstract 'read' and 'seek' methods that should be implemented in Java code.
    NOTE: Implemented callbacks should be called from the creation thread to avoid JNI performance degradation
- Method Detail
  - getNativeObjAddr
```
public long getNativeObjAddr()
```
  - __fromPtr__
```
public static IStreamReader __fromPtr__(long addr)
```
  - read
```
public long read(byte[] buffer,
                 long size)
```
    Read bytes from stream
    
    Parameters:
    
    buffer - already allocated buffer of at least size bytes
    
    size - maximum number of bytes to read
    
    Returns:
    
    actual number of read bytes
  - seek
```
public long seek(long offset,
                 int origin)
```
    Sets the stream position
    
    Parameters:
    
    offset - Seek offset
    
    origin - SEEK_SET / SEEK_END / SEEK_CUR SEE: fseek
    
    Returns:
    
    automatically generated
  - finalize
```
protected void finalize()
                 throws java.lang.Throwable
```
    Overrides:
    
    finalize in class java.lang.Object
    
    Throws:
    
    java.lang.Throwable