org.jitsi.impl.neomedia.codec.video.h264

Class JNIDecoder

java.lang.Object

net.sf.fmj.media.AbstractControls

net.sf.fmj.media.AbstractPlugIn

net.sf.fmj.media.AbstractCodec

org.jitsi.impl.neomedia.codec.video.h264.JNIDecoder

All Implemented Interfaces:

javax.media.Codec, javax.media.Controls, javax.media.PlugIn

public class JNIDecoder
extends net.sf.fmj.media.AbstractCodec

Decodes H.264 NAL units and returns the resulting frames as FFmpeg AVFrames (i.e. in YUV format).

Author:

Damian Minkov, Lyubomir Marinov, Sebastien Vincent

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

Constructors

Constructor and Description
JNIDecoder() Initializes a new JNIDecoder instance which is to decode H.264 NAL units into frames in YUV format.

Method Summary

Modifier and Type	Method and Description
boolean	checkFormat(javax.media.Format format) Check Format.
void	close() Close Codec.
protected javax.media.Format[]	getMatchingOutputFormats(javax.media.Format inputFormat) Get matching outputs for a specified input Format.
String	getName() Get plugin name.
javax.media.Format[]	getSupportedOutputFormats(javax.media.Format inputFormat) Get all supported output Formats.
void	open() Inits the codec instances.
int	process(javax.media.Buffer in, javax.media.Buffer out) Decodes H.264 media data read from a specific input Buffer into a specific output Buffer.
javax.media.Format	setInputFormat(javax.media.Format format) Sets the Format of the media data to be input for processing in this Codec.
void	setKeyFrameControl(KeyFrameControl keyFrameControl) Sets the KeyFrameControl to be used by this DePacketizer as a means of control over its key frame-related logic.

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

checkInputBuffer, dump, getInputFormat, getOutputFormat, getSupportedInputFormats, isEOM, propagateEOM, setOutputFormat

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

reset

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

addControl, getControl, getControls, removeControl

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.media.PlugIn

reset

Methods inherited from interface javax.media.Controls

getControl, getControls

Constructor Detail

JNIDecoder

public JNIDecoder()

Initializes a new JNIDecoder instance which is to decode H.264 NAL units into frames in YUV format.

Method Detail

checkFormat

public boolean checkFormat(javax.media.Format format)

Check Format.

Parameters:

format - Format to check

Returns:

true if Format is H264_RTP

close

public void close()

Close Codec.

Specified by:

close in interface javax.media.PlugIn

Overrides:

close in class net.sf.fmj.media.AbstractPlugIn

getMatchingOutputFormats

protected javax.media.Format[] getMatchingOutputFormats(javax.media.Format inputFormat)

Get matching outputs for a specified input Format.

Parameters:

inputFormat - input Format

Returns:

array of matching outputs or null if there are no matching outputs.

getName

public String getName()

Get plugin name.

Specified by:

getName in interface javax.media.PlugIn

Overrides:

getName in class net.sf.fmj.media.AbstractPlugIn

Returns:

"H.264 Decoder"

getSupportedOutputFormats

public javax.media.Format[] getSupportedOutputFormats(javax.media.Format inputFormat)

Get all supported output Formats.

Specified by:

getSupportedOutputFormats in interface javax.media.Codec

Specified by:

getSupportedOutputFormats in class net.sf.fmj.media.AbstractCodec

Parameters:

inputFormat - input Format to determine corresponding output Formats

Returns:

an array of supported output Formats

open

public void open()
          throws javax.media.ResourceUnavailableException

Inits the codec instances.

Specified by:

open in interface javax.media.PlugIn

Overrides:

open in class net.sf.fmj.media.AbstractPlugIn

Throws:

javax.media.ResourceUnavailableException - if codec initialization failed

process

public int process(javax.media.Buffer in,
                   javax.media.Buffer out)

Decodes H.264 media data read from a specific input Buffer into a specific output Buffer.

Specified by:

process in interface javax.media.Codec

Specified by:

process in class net.sf.fmj.media.AbstractCodec

Parameters:

in - input Buffer

out - output Buffer

Returns:

BUFFER_PROCESSED_OK if in has been successfully processed

setInputFormat

public javax.media.Format setInputFormat(javax.media.Format format)

Sets the Format of the media data to be input for processing in this Codec.

Specified by:

setInputFormat in interface javax.media.Codec

Overrides:

setInputFormat in class net.sf.fmj.media.AbstractCodec

Parameters:

format - the Format of the media data to be input for processing in this Codec

Returns:

the Format of the media data to be input for processing in this Codec if format is compatible with this Codec; otherwise, null

setKeyFrameControl

public void setKeyFrameControl(KeyFrameControl keyFrameControl)

Sets the KeyFrameControl to be used by this DePacketizer as a means of control over its key frame-related logic.

Parameters:

keyFrameControl - the KeyFrameControl to be used by this DePacketizer as a means of control over its key frame-related logic