org.qtunes.ff.spi.mp4
Class MP4Handler

java.lang.Object
  org.qtunes.ff.TrackReader
      org.qtunes.ff.spi.mp4.MP4Handler

All Implemented Interfaces:

Service

public class MP4Handler
extends TrackReader

A parser to load MP4 objects. Doesn't decode audio, but can extract metadata from the MP4 object. Uses NIO and skips over blocks that aren't required so should be very quick and memory efficient.

Field Summary

Fields inherited from class org.qtunes.ff.TrackReader

MP3GENRES

Constructor Summary

MP4Handler()

Method Summary

javax.sound.sampled.AudioInputStream	getAudioInputStream(java.io.File file) Return the AudioInputStream for the specified File.
ServiceContext	getContext() Return the ServiceContext that was passed into Service.startService(org.qtunes.core.ServiceContext)
java.lang.String	getType() Get the type of track read by this reader, eg "mp3".
static void	main(java.lang.String[] args)
boolean	matches(java.io.File file) Return true if this TrackReader matches the File
FieldMap	read(java.io.File file) Load and parse the file and return a FieldMap with its fields
java.util.Map<java.lang.String,java.lang.Object>	reportState() Return a Map describing the state of this Service, for serialization back to any client that needs to know (eg webplayer) - so values should be serializable objects, eg Lists, Maps or simple objects.
void	startService(ServiceContext context) Start the Service
void	stopService(ServiceContext context) Stop the Service

Methods inherited from class org.qtunes.ff.TrackReader

getTrackReader, getTrackReader, getTrackReader, getTrackReader

Methods inherited from class java.lang.Object

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

Constructor Detail

MP4Handler

public MP4Handler()

Method Detail

getType

public java.lang.String getType()

Description copied from class: TrackReader

Get the type of track read by this reader, eg "mp3". Must match the "Type" field of the FieldMap read by this reader

Specified by:

getType in class TrackReader

matches

public boolean matches(java.io.File file)

Description copied from class: TrackReader

Return true if this TrackReader matches the File

Specified by:

matches in class TrackReader

read

public FieldMap read(java.io.File file)
              throws java.io.IOException

Description copied from class: TrackReader

Load and parse the file and return a FieldMap with its fields

Specified by:

read in class TrackReader

Throws:

java.io.IOException

reportState

public java.util.Map<java.lang.String,java.lang.Object> reportState()

Description copied from interface: Service

Return a Map describing the state of this Service, for serialization back to any client that needs to know (eg webplayer) - so values should be serializable objects, eg Lists, Maps or simple objects. If no useful state, return null.

startService

public void startService(ServiceContext context)

Description copied from interface: Service

Start the Service

Parameters:

context - the ServiceContext for this Service

stopService

public void stopService(ServiceContext context)

Description copied from interface: Service

Stop the Service

Parameters:

context - the ServiceContext for this Service (same as was passed into start)

getContext

public ServiceContext getContext()

Description copied from interface: Service

Return the ServiceContext that was passed into Service.startService(org.qtunes.core.ServiceContext)

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Throws:

java.lang.Exception

getAudioInputStream

public javax.sound.sampled.AudioInputStream getAudioInputStream(java.io.File file)
                                                         throws javax.sound.sampled.UnsupportedAudioFileException,
                                                                java.io.IOException

Description copied from class: TrackReader

Return the AudioInputStream for the specified File. We use this approach because it's more reliable than relying on the AudioSystem to correctly identify the file.

Specified by:

getAudioInputStream in class TrackReader

Throws:

javax.sound.sampled.UnsupportedAudioFileException

java.io.IOException