org.jaudiotagger.audio.asf.io
Class LanguageListReader

java.lang.Object
  extended by org.jaudiotagger.audio.asf.io.LanguageListReader
All Implemented Interfaces:
ChunkReader

public class LanguageListReader
extends java.lang.Object
implements ChunkReader

Reads and interprets the "Language List Object" of ASF files.

Author:
Christian Laireiter

Field Summary
private static GUID[] APPLYING
          The GUID this reader applies to
 
Constructor Summary
LanguageListReader()
           
 
Method Summary
 boolean canFail()
          Tells whether the reader can fail to return a valid chunk.
The current Use would be a modified version of StreamChunkReader, which is configured to only manage audio streams.
 GUID[] getApplyingIds()
          Returns the GUIDs identifying the types of chunk, this reader will parse.
 Chunk read(GUID guid, java.io.InputStream stream, long streamPosition)
          Parses the chunk.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

APPLYING

private static final GUID[] APPLYING
The GUID this reader applies to

Constructor Detail

LanguageListReader

public LanguageListReader()
Method Detail

canFail

public boolean canFail()
Tells whether the reader can fail to return a valid chunk.
The current Use would be a modified version of StreamChunkReader, which is configured to only manage audio streams. However, the primary GUID for audio and video streams is the same. So if a stream shows itself to be a video stream, the reader would return null.

Specified by:
canFail in interface ChunkReader
Returns:
true, if further analysis of the chunk can show, that the reader is not applicable, despite the header GUID identification told it can handle the chunk.

getApplyingIds

public GUID[] getApplyingIds()
Returns the GUIDs identifying the types of chunk, this reader will parse.

Specified by:
getApplyingIds in interface ChunkReader
Returns:
the GUIDs identifying the types of chunk, this reader will parse.

read

public Chunk read(GUID guid,
                  java.io.InputStream stream,
                  long streamPosition)
           throws java.io.IOException
Parses the chunk.

Specified by:
read in interface ChunkReader
Parameters:
guid - the GUID of the chunks header, which is about to be read.
stream - source to read chunk from.
No GUID is expected at the currents stream position. The length of the chunk is about to follow.
streamPosition - the position in stream, the chunk starts.
Returns:
the read chunk. (Mostly a subclass of Chunk).
Throws:
java.io.IOException - On I/O Errors.