net.sf.fmj.media.codec.video.jpeg
Class DePacketizer

java.lang.Object
  net.sf.fmj.media.AbstractControls
      net.sf.fmj.media.AbstractPlugIn
          net.sf.fmj.media.AbstractCodec
              net.sf.fmj.media.codec.video.jpeg.DePacketizer

All Implemented Interfaces:

Codec, Controls, PlugIn

public class DePacketizer
extends AbstractCodec
implements Codec

JPEG/RTP depacketizer Codec. FMJ's functional equivalent of com.sun.media.codec.video.jpeg.DePacketizer. Reassembles JPEG RTP packets into JPEG frames, as per RFC 2035 - RTP Payload Format for JPEG Video. See http://www.rfc-archive.org/getrfc.php?rfc=2035 TODO: support restart markers TODO: support q table headers TODO: lunarphases.mov: when received, JMF puts extra stuff on the end that we don't.

Author:

Ken Larson, Martin Harvan

Field Summary

Fields inherited from class net.sf.fmj.media.AbstractCodec

inputFormat, inputFormats, opened, outputFormat

Fields inherited from interface javax.media.PlugIn

BUFFER_PROCESSED_FAILED, BUFFER_PROCESSED_OK, INPUT_BUFFER_NOT_CONSUMED, OUTPUT_BUFFER_NOT_FILLED, PLUGIN_TERMINATED

Constructor Summary

DePacketizer()
Because packets can come out of order, it is possible that some packets for a newer frame may arrive while an older frame is still incomplete.

Method Summary

void	close()
java.lang.Object	getControl(java.lang.String controlType) Retrieve the first object that implements the given Class or Interface.
java.lang.Object[]	getControls() Retrieve an array of objects that control the object.
java.lang.String	getName()
Format[]	getSupportedInputFormats()
Format[]	getSupportedOutputFormats(Format input)
void	open()
int	process(Buffer input, Buffer output)
void	reset()
Format	setInputFormat(Format format)
Format	setOutputFormat(Format format)

Methods inherited from class net.sf.fmj.media.AbstractCodec

checkInputBuffer, dump, getInputFormat, getOutputFormat, isEOM, propagateEOM

Methods inherited from class net.sf.fmj.media.AbstractControls

addControl, removeControl

Methods inherited from class java.lang.Object

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

Constructor Detail

DePacketizer

public DePacketizer()

Because packets can come out of order, it is possible that some packets for a newer frame may arrive while an older frame is still incomplete. However, in the case where we get nothing but incomplete frames, we don't want to keep all of them around forever.

Method Detail

close

public void close()

Specified by:

close in interface PlugIn

Overrides:

close in class AbstractPlugIn

getControl

public java.lang.Object getControl(java.lang.String controlType)

Description copied from class: AbstractControls

Retrieve the first object that implements the given Class or Interface. The full class name must be used. If the control is not supported then null is returned.

Specified by:

getControl in interface Controls

Overrides:

getControl in class AbstractControls

Returns:

the object that implements the control, or null.

getControls

public java.lang.Object[] getControls()

Description copied from class: AbstractControls

Retrieve an array of objects that control the object. If no controls are supported, a zero length array is returned.

Specified by:

getControls in interface Controls

Overrides:

getControls in class AbstractControls

Returns:

the array of object controls

getName

public java.lang.String getName()

Specified by:

getName in interface PlugIn

Overrides:

getName in class AbstractPlugIn

getSupportedInputFormats

public Format[] getSupportedInputFormats()

Specified by:

getSupportedInputFormats in interface Codec

Overrides:

getSupportedInputFormats in class AbstractCodec

getSupportedOutputFormats

public Format[] getSupportedOutputFormats(Format input)

Specified by:

getSupportedOutputFormats in interface Codec

Specified by:

getSupportedOutputFormats in class AbstractCodec

open

public void open()
          throws ResourceUnavailableException

Specified by:

open in interface PlugIn

Overrides:

open in class AbstractPlugIn

Throws:

ResourceUnavailableException

reset

public void reset()

Specified by:

reset in interface PlugIn

Overrides:

reset in class AbstractPlugIn

setInputFormat

public Format setInputFormat(Format format)

Specified by:

setInputFormat in interface Codec

Overrides:

setInputFormat in class AbstractCodec

setOutputFormat

public Format setOutputFormat(Format format)

Specified by:

setOutputFormat in interface Codec

Overrides:

setOutputFormat in class AbstractCodec

process

public int process(Buffer input,
                   Buffer output)

Specified by:

process in interface Codec

Specified by:

process in class AbstractCodec