Package org.red5.io.mp4.impl

Class MP4

java.lang.Object

org.red5.io.mp4.impl.MP4

All Implemented Interfaces:

IStreamableFile, IMP4

public class MP4
extends Object
implements IMP4

A MP4Impl implements the MP4 api

Author:

The Red5 Project, Paul Gregoire, (mondain@gmail.com)

Field Summary

Fields

Modifier and Type	Field	Description
protected static org.slf4j.Logger	log

Constructor Summary

Constructors

Constructor	Description
MP4()	Default constructor, used by Spring so that parameters may be injected.
MP4(File file)	Create MP4 from given file source.

Method Summary

Modifier and Type	Method	Description
void	flushHeaders()	Flushes Header
ITagWriter	getAppendWriter()	Returns a Writer which is setup to append to the file.
Map<?,?>	getKeyFrameData()	Gets the keyframe data
IMetaData<?,?>	getMetaData()	Returns a map of the metadata
ITagReader	getReader()	Returns a reader to parse and read the tags inside the file.
ITagWriter	getWriter()	Returns a writer that creates a new file or truncates existing contents.
boolean	hasKeyFrameData()	Returns a boolean stating whether a mp4 has keyframedata
boolean	hasMetaData()	Returns a boolean stating whether the mp4 has metadata
ITagReader	readerFromNearestKeyFrame(int seekPoint)	Returns a Reader closest to the nearest keyframe
void	refreshHeaders()	Refreshes the headers.
void	setKeyFrameData(Map<?,?> keyframedata)	Sets the keyframe data of a mp4 file
void	setMetaData(IMetaData<?,?> meta)	Sets the metadata
void	setMetaService(IMetaService service)	Sets the MetaService through Spring
ITagWriter	writerFromNearestKeyFrame(int seekPoint)	Returns a Writer based on the nearest key frame

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static org.slf4j.Logger log

Constructor Detail

MP4

public MP4()

Default constructor, used by Spring so that parameters may be injected.

MP4

public MP4(File file)

Create MP4 from given file source.

Parameters:

file - File source

Method Detail

hasMetaData

public boolean hasMetaData()

Returns a boolean stating whether the mp4 has metadata

Specified by:

hasMetaData in interface IMP4

Returns:

boolean true if file has injected metadata, false otherwise

getMetaData

public IMetaData<?,?> getMetaData()
                                 throws FileNotFoundException

Returns a map of the metadata

Specified by:

getMetaData in interface IMP4

Returns:

metadata File metadata

Throws:

FileNotFoundException - File not found

hasKeyFrameData

public boolean hasKeyFrameData()

Returns a boolean stating whether a mp4 has keyframedata

Specified by:

hasKeyFrameData in interface IMP4

Returns:

boolean true if file has keyframe metadata, false otherwise

setKeyFrameData

public void setKeyFrameData(Map<?,?> keyframedata)

Sets the keyframe data of a mp4 file

Specified by:

setKeyFrameData in interface IMP4

Parameters:

keyframedata - Keyframe metadata

getKeyFrameData

public Map<?,?> getKeyFrameData()

Gets the keyframe data

Specified by:

getKeyFrameData in interface IMP4

Returns:

keyframedata Keyframe metadata

refreshHeaders

public void refreshHeaders()
                    throws IOException

Refreshes the headers. Usually used after data is added to the mp4 file

Specified by:

refreshHeaders in interface IMP4

Throws:

IOException - Any I/O exception

flushHeaders

public void flushHeaders()
                  throws IOException

Flushes Header

Specified by:

flushHeaders in interface IMP4

Throws:

IOException - Any I/O exception

getReader

public ITagReader getReader()
                     throws IOException

Returns a reader to parse and read the tags inside the file.

Specified by:

getReader in interface IStreamableFile

Returns:

the reader Tag reader

Throws:

IOException - I/O exception

readerFromNearestKeyFrame

public ITagReader readerFromNearestKeyFrame(int seekPoint)

Returns a Reader closest to the nearest keyframe

Specified by:

readerFromNearestKeyFrame in interface IMP4

Parameters:

seekPoint - Point in file we are seeking around

Returns:

reader Tag reader closest to that point

getWriter

public ITagWriter getWriter()
                     throws IOException

Returns a writer that creates a new file or truncates existing contents.

Specified by:

getWriter in interface IStreamableFile

Returns:

the writer Tag writer

Throws:

IOException - I/O exception

writerFromNearestKeyFrame

public ITagWriter writerFromNearestKeyFrame(int seekPoint)

Returns a Writer based on the nearest key frame

Specified by:

writerFromNearestKeyFrame in interface IMP4

Parameters:

seekPoint - Point in file we are seeking around

Returns:

writer Tag writer closest to that point

setMetaData

public void setMetaData(IMetaData<?,?> meta)
                 throws IOException

Sets the metadata

Specified by:

setMetaData in interface IMP4

Parameters:

meta - Metadata object

Throws:

FileNotFoundException - File not found

IOException - Any other I/O exception

setMetaService

public void setMetaService(IMetaService service)

Sets the MetaService through Spring

Specified by:

setMetaService in interface IMP4

Parameters:

service - Metadata service

getAppendWriter

public ITagWriter getAppendWriter()
                           throws IOException

Description copied from interface: IStreamableFile

Returns a Writer which is setup to append to the file.

Specified by:

getAppendWriter in interface IStreamableFile

Returns:

the writer Tag writer used for append mode

Throws:

IOException - I/O exception