com.tuneology.avm.media
Class MediaBuffer

java.lang.Object
  |
  +--com.tuneology.avm.media.MediaBuffer

All Implemented Interfaces:

MediaData

public class MediaBuffer

extends java.lang.Object

implements MediaData

This class implements an in-memory implementation of the MediaData interface.

Version:

$Id: MediaBuffer.java,v 1.2 2003/03/19 02:26:07 xnarf Exp $

Author:

Fran Taylor

Constructor Summary

MediaBuffer(java.io.InputStream str)

MediaBuffer(long sz, MediaProperties p)

Method Summary

boolean	canSeek() Returns true if the file is capable of seeking.
void	close()
java.io.File	getFile() Returns a File object by which the contents can be read.
long	getFilePointer() Returns the current position in the file.
java.lang.String	getPath() Returns the pathname of the file if it has one, blank otherwise.
MediaProperties	getProperties()
boolean	isStream() Returns true if the source is a stream of indefinate length.
long	length() Returns the length of the file.
int	read(byte[] b, int off, int len)
void	releaseFile(java.io.File f) Deletes the contents of the file if it's a temp file.
void	seek(long pos) Moves the current position in the file.
void	setLength(long newLength)
void	write(byte[] b, int off, int len)

Methods inherited from class java.lang.Object

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

Constructor Detail

MediaBuffer

public MediaBuffer(long sz,
                   MediaProperties p)

Parameters:

sz - the initial size of the buffer

MediaBuffer

public MediaBuffer(java.io.InputStream str)

Parameters:

str - the initial contents of the buffer

Method Detail

getProperties

public MediaProperties getProperties()

Specified by:

getProperties in interface MediaData

getPath

public java.lang.String getPath()

Description copied from interface: MediaData

Returns the pathname of the file if it has one, blank otherwise.

Specified by:

getPath in interface MediaData

Following copied from interface: com.tuneology.avm.media.MediaData

Returns:

the pathname of the file if it has one, blank otherwise.

getFile

public java.io.File getFile()
                     throws java.io.IOException

Description copied from interface: MediaData

Returns a File object by which the contents can be read. This can be a temporary file, if necessary. Not allowed if the source is a stream.

Specified by:

getFile in interface MediaData

Throws:

java.io.IOException -

releaseFile

public void releaseFile(java.io.File f)
                 throws java.io.IOException

Description copied from interface: MediaData

Deletes the contents of the file if it's a temp file.

Specified by:

releaseFile in interface MediaData

Throws:

java.io.IOException -

isStream

public boolean isStream()

Returns true if the source is a stream of indefinate length.

Specified by:

isStream in interface MediaData

Returns:

true if the source is a stream of indefinate length.

length

public long length()
            throws java.io.IOException

Description copied from interface: MediaData

Returns the length of the file.

Specified by:

length in interface MediaData

Returns:

the length of the file.

Throws:

java.io.IOException -

canSeek

public boolean canSeek()

Returns true if the file is capable of seeking.

Specified by:

canSeek in interface MediaData

seek

public void seek(long pos)
          throws java.io.IOException

Description copied from interface: MediaData

Moves the current position in the file.

Specified by:

seek in interface MediaData

Parameters:

pos -

Throws:

java.io.IOException -

getFilePointer

public long getFilePointer()
                    throws java.io.IOException

Returns the current position in the file.

Specified by:

getFilePointer in interface MediaData

Returns:

the current position in the file.

Throws:

java.io.IOException -

setLength

public void setLength(long newLength)
               throws java.io.IOException

Specified by:

setLength in interface MediaData

Parameters:

newLength -

Throws:

java.io.IOException -

read

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

Specified by:

read in interface MediaData

Parameters:

b -

off -

len -

Throws:

java.io.IOException -

write

public void write(byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Specified by:

write in interface MediaData

Throws:

java.io.IOException -

close

public void close()
           throws java.io.IOException

Specified by:

close in interface MediaData

Throws:

java.io.IOException -