LTRmp3 (iFish scanner 1.5.0-SNAPSHOT API) - iFish-scanner - shredzone.org

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net.shredzone.ifish.ltr
Class LTRmp3

java.lang.Object
  net.shredzone.ifish.ltr.LTR
      net.shredzone.ifish.ltr.LTRmp3

Direct Known Subclasses:: TagMp3v1, TagMp3v2, TagMp3v200

public abstract class LTRmp3
extends LTR
extends LTR

The Base Class for mp3 decoding of the Lightweight Tag Reader.

Version:: $Id: LTRmp3.java 289 2009-04-28 21:21:46Z shred $

Field Summary

Fields inherited from class net.shredzone.ifish.ltr.LTR
`factory, in`

Constructor Summary
`LTRmp3(RandomAccessFile in, LTRFactory factory)` Constructor for the LTRmp3 object

Method Summary
`protected String`	`decodeGenre(int id)` Decode the mp3 numerical Genre code and convert it to a human readable string.
`protected int`	`readInt()` Read an ID3v2 integer.
`protected byte`	`readSyncsafe()` Read a syncsafe byte.
`protected int`	`readSyncsafeInt()` Read an ID3v2 syncsafe integer.

Methods inherited from class net.shredzone.ifish.ltr.LTR
`getAlbum, getArtist, getComment, getGenre, getTitle, getTrack, getType, getYear, readStringLen, readStringLen, toString`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

LTRmp3

public LTRmp3(RandomAccessFile in,
              LTRFactory factory)
       throws FormatDecodeException

Constructor for the LTRmp3 object

Parameters:: in - File to be used; factory - Reference to the LTRFactory
Throws:: FormatDecodeException - Could not decode file

Method Detail

decodeGenre

protected String decodeGenre(int id)

Decode the mp3 numerical Genre code and convert it to a human readable string. The genre is decoded according to the specifications found at www.id3.org, as well as the WinAmp extensions.

Parameters:: id - Genre ID
Returns:: ID String, null if the genre ID was unknown

readInt

protected int readInt()
               throws IOException

Read an ID3v2 integer. This is a 4 byte big endian value, which is always not syncsafe.

Returns:: The integer read.
Throws:: IOException - If there were not enough bytes in the file.

readSyncsafeInt

protected int readSyncsafeInt()
                       throws IOException

Read an ID3v2 syncsafe integer. This is a 4 byte big endian value with the bit 7 of each byte always being 0.

Returns:: The syncsafe integer read.
Throws:: IOException - If there were not enough bytes in the file.

readSyncsafe

protected byte readSyncsafe()
                     throws IOException

Read a syncsafe byte. It is made sure that a byte is available in the file, and that bit 7 is 0. An IOException is thrown otherwise.

Returns:: The byte read.
Throws:: IOException - If premature EOF was reached or byte was not syncsafe.