com.tuneology.avm.media
Interface MediaData

All Known Implementing Classes:

MediaBuffer, AudioData, MediaFile

public interface MediaData

This interface represents a data store with capabilities suitable for holding media data.

Version:

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

Author:

Fran Taylor

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)

Method Detail

getFile

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

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.

Throws:

java.io.IOException -

releaseFile

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

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

Throws:

java.io.IOException -

isStream

public boolean isStream()

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

Returns:

true if the source is a stream of indefinate length.

getPath

public java.lang.String getPath()

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

Returns:

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

getProperties

public MediaProperties getProperties()

length

public long length()
            throws java.io.IOException

Returns the length of the file.

Returns:

the length of the file.

Throws:

java.io.IOException -

canSeek

public boolean canSeek()

Returns true if the file is capable of seeking.

seek

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

Moves the current position in the file.

Parameters:

pos - the new current position.

Throws:

java.io.IOException -

getFilePointer

public long getFilePointer()
                    throws java.io.IOException

Returns the current position in the file.

Returns:

the current position in the file.

Throws:

java.io.IOException -

setLength

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

Parameters:

newLength -

Throws:

java.io.IOException -

read

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

Parameters:

b -

off -

len -

Throws:

java.io.IOException -

write

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

Throws:

java.io.IOException -

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException -