Package org.opencastproject.caption.converters

Class Mpeg7CaptionConverter

java.lang.Object

org.opencastproject.caption.converters.Mpeg7CaptionConverter

All Implemented Interfaces:

CaptionConverter

public class Mpeg7CaptionConverter
extends Object
implements CaptionConverter

This is converter for Mpeg7 caption format.

Constructor Summary

Constructors

Constructor	Description
Mpeg7CaptionConverter()

Method Summary

Modifier and Type	Method	Description
void	exportCaption(OutputStream outputStream, List<Caption> captions, String language)	Exports caption collection.
MediaPackageElement.Type	getElementType()	Get type of specific caption element (Catalog, Attachment).
String	getExtension()	Get extension of specific caption format.
String[]	getLanguageList(InputStream inputStream)	Reads captions and return information about language if such information is available.
List<Caption>	importCaption(InputStream inputStream, String language)	Imports captions to List.

Methods inherited from class java.lang.Object

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

Constructor Details

Mpeg7CaptionConverter

public Mpeg7CaptionConverter()

Method Details

importCaption

public List<Caption> importCaption(InputStream inputStream,
 String language)
                            throws CaptionConverterException

Description copied from interface: CaptionConverter

Imports captions to List. If caption format is capable of containing more than one language, language parameter is used to define which captions are parsed.

Specified by:

importCaption in interface CaptionConverter

Parameters:

inputStream - stream from where captions are read

language - (optional) captions' language

Returns:

List List of captions

Throws:

CaptionConverterException - if parser encounters an exception

See Also:

• CaptionConverter.importCaption(java.io.InputStream, java.lang.String)

exportCaption

public void exportCaption(OutputStream outputStream,
 List<Caption> captions,
 String language)
                   throws IOException

Description copied from interface: CaptionConverter

Exports caption collection. Language parameter is used to set language of the captions for those caption format that are capable of storing information about language.

Specified by:

exportCaption in interface CaptionConverter

Parameters:

outputStream - stream to which captions are written

captions - collection to be exported

language - (optional) captions' language

Throws:

IOException - if exception occurs writing to output stream

getLanguageList

public String[] getLanguageList(InputStream inputStream)
                         throws CaptionConverterException

Description copied from interface: CaptionConverter

Reads captions and return information about language if such information is available. Returns empty list otherwise.

Specified by:

getLanguageList in interface CaptionConverter

Parameters:

inputStream - stream from where captions are read

Returns:

Array containing languages in captions

Throws:

CaptionConverterException - if parser encounters exception

See Also:

• CaptionConverter.getLanguageList(java.io.InputStream)

getExtension

public String getExtension()

Description copied from interface: CaptionConverter

Get extension of specific caption format.

Specified by:

getExtension in interface CaptionConverter

Returns:

caption format extension

See Also:

• CaptionConverter.getExtension()

getElementType

public MediaPackageElement.Type getElementType()

Description copied from interface: CaptionConverter

Get type of specific caption element (Catalog, Attachment).

Specified by:

getElementType in interface CaptionConverter

Returns:

type