oracle.ord.hadoop.decoder

Class OrdFrameGrabber

java.lang.Object

oracle.ord.hadoop.decoder.OrdFrameGrabber

public abstract class OrdFrameGrabber
extends java.lang.Object

OrdFrameGrabber is an abstract class that allows decoding video data stored on Hadoop file system.

The OrdFrameGrabber object is contructed with org.apache.hadoop.fs.FSDataInputStream object.

The video frame is returned as a java.awt.image.BufferedImage object.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.hadoop.fs.FSDataInputStream	m_in

Constructor Summary

Constructors

Constructor and Description
OrdFrameGrabber(org.apache.hadoop.fs.FSDataInputStream in) Creates an OrdFrameGrabber object that decodes video frames from the specified FSDataInputStream.

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	close() Close the OrdFrameGrabber object, releasing any resources being used.
abstract double	getTotalDuration() Returns the duration of the video that the OrdFrameGrabber object decodes.
abstract java.awt.image.BufferedImage	nextFrame() Returns next frame data that the OrdFrameGrabber object decodes from the video at the time set by the seekToSecond method.
abstract double	seekToSecond(double second) Seek to the time at which the next frame decoding operation will occur.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

m_in

protected org.apache.hadoop.fs.FSDataInputStream m_in

Constructor Detail

OrdFrameGrabber

public OrdFrameGrabber(org.apache.hadoop.fs.FSDataInputStream in)

Creates an OrdFrameGrabber object that decodes video frames from the specified FSDataInputStream.

Parameters:

in - the FSDataInputStream from which data will be read.

Method Detail

nextFrame

public abstract java.awt.image.BufferedImage nextFrame()
                                                throws java.io.IOException

Returns next frame data that the OrdFrameGrabber object decodes from the video at the time set by the seekToSecond method.

Returns:

the BufferedImage including the next frame data.

Throws:

java.io.IOException - if a decoding error occurs.

seekToSecond

public abstract double seekToSecond(double second)
                             throws java.io.IOException

Seek to the time at which the next frame decoding operation will occur. The time unit is second.

Parameters:

second - the time at which the next frame decoding operation will occur.

Returns:

the time which is seeked to, or -1 if seeking failed.

Throws:

java.io.IOException - if a seeking error occurs.

getTotalDuration

public abstract double getTotalDuration()

Returns the duration of the video that the OrdFrameGrabber object decodes.

Returns:

the duration of the video.

close

public abstract void close()

Close the OrdFrameGrabber object, releasing any resources being used.