comirva.audio.util
Class MetaDataInputStream

java.lang.Object
  java.io.InputStream
      java.io.FilterInputStream
          comirva.audio.util.MetaDataInputStream

All Implemented Interfaces:

Closeable

public class MetaDataInputStream
extends FilterInputStream

Überschrift:

Beschreibung:

This class provides a way to split metadata from audiostream, which support the Shoutcast Metadata Protocol. The resulting stream equals the InputStream handed in, except that all metadata infos have been removed. Normally internet radio streams are encoded. Therefore these streams should be passed on to the Java Sound API, which will try to decode the given stream using the installed codecs.
Attention: Wrap this Stream with a BufferedInputStream to yield a smooth decoding into a pcm audio stream.
To create an MetaDataInputStream directly based on an URL use the factory method createMetaDataInputStream(). You might also wrap the BufferedInputStream with a ReducedAudioInputStream if you want to analyze this stream using the comirva.audio package.

Field Summary

String	currentMeta
String	lastMeta
(package private) int	metaint
(package private) int	metapos
String	name
(package private) int	next
(package private) static int	nextStreamID
int	streamID
int	zeroMetasCurrent
int	zeroMetasLast

Fields inherited from class java.io.FilterInputStream

in

Method Summary

static MetaDataInputStream	createMetaDataInputStream(URL source)
void	processHeader()
int	read()
int	read(byte[] b)
int	read(byte[] b, int off, int len) This read method splits the metadata from the mp3 stream.
String	readHeader()

Methods inherited from class java.io.FilterInputStream

available, close, mark, markSupported, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

currentMeta

public String currentMeta

lastMeta

public String lastMeta

zeroMetasLast

public int zeroMetasLast

zeroMetasCurrent

public int zeroMetasCurrent

metaint

int metaint

next

int next

nextStreamID

static int nextStreamID

streamID

public int streamID

name

public String name

metapos

int metapos

Method Detail

read

public int read()
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b)
         throws IOException

Overrides:

read in class FilterInputStream

Throws:

IOException

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

This read method splits the metadata from the mp3 stream. The metadata infos are sent every metaint bytes. The first byte after metaint bytes of mp3 data indicates the length of the metadata message.

Overrides:

read in class FilterInputStream

Throws:

IOException

readHeader

public String readHeader()
                  throws IOException

Throws:

IOException

processHeader

public void processHeader()
                   throws IOException

Throws:

IOException

createMetaDataInputStream

public static MetaDataInputStream createMetaDataInputStream(URL source)
                                                     throws IOException

Throws:

IOException