File Doc Category Size Date Package
Mp4TagTextField.java API Doc Jaudiotagger 2.0.4 4053 Wed Mar 30 16:12:10 BST 2011 org.jaudiotagger.tag.mp4.field

Mp4TagTextField

java.lang.Object
- org.jaudiotagger.tag.mp4.Mp4TagField

public class Mp4TagTextField extends org.jaudiotagger.tag.mp4.Mp4TagField implements org.jaudiotagger.tag.TagTextField

Represents a single text field

Mp4 metadata normally held as follows:

MP4Box Parent contains
:length (includes length of data child) (4 bytes)
:name (4 bytes)
:child with
:length (4 bytes)
:name 'Data' (4 bytes)
:atom version (1 byte)
:atom type flags (3 bytes)
:null field (4 bytes)
:data

Note:This class is initilized with the child data atom only, the parent data has already been processed, this may change as it seems that code should probably be enscapulated into this. Whereas the raw content returned by the getRawContent() contais the byte data for parent and child.

Fields Summary
protected int
dataSize
protected String
content
Constructors Summary
public Mp4TagTextField(String id, ByteBuffer data)
Construct from File
param
id parent id
param
data atom data
throws
UnsupportedEncodingException
super(id, data);
public Mp4TagTextField(String id, String content)
Construct new Field
param
id parent id
param
content data atom data
super(id); this.content = content;
Methods Summary
protected void build(java.nio.ByteBuffer data)
//Data actually contains a 'Data' Box so process data using this Mp4BoxHeader header = new Mp4BoxHeader(data); Mp4DataBox databox = new Mp4DataBox(header, data); dataSize = header.getDataLength(); content = databox.getContent();
public void copyContent(org.jaudiotagger.tag.TagField field)
if (field instanceof Mp4TagTextField) { this.content = ((Mp4TagTextField) field).getContent(); }
public java.lang.String getContent()
return content;
protected byte[] getDataBytes()
return content.getBytes(getEncoding());
public java.lang.String getEncoding()
return Mp4BoxHeader.CHARSET_UTF_8;
public Mp4FieldType getFieldType()
return Mp4FieldType.TEXT;
public boolean isBinary()
return false;
public boolean isEmpty()
return this.content.trim().equals("");
public void setContent(java.lang.String s)
this.content = s;
public void setEncoding(java.lang.String s)
/* Not allowed */
public java.lang.String toString()
return content;