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Interface guinea.player.Player

public interface Player

This interface is implemented by the sound players as well as virtual players.

Method Index

· addPlayerListener(PlayerListener): Adds the specified player listener to receive events from this player.
· getParentPlayer(): Get the parent player of a virtual player.
· getPlayerDirectory(): Get the directory of the player.
· getPlayerID(): The player ID string of this player.
· getTempMessageID(): Get a temporary ID string for loading samples etc.
· getVirtualPlayerID(): The player ID string of this player.
· hasAudio(): Does this player support audio?
· hasVideo(): Does this player support video?
· isPlayerRunning(): Is the player running?
· isVirtualPlayer(): Is the player a 'virtual' player.
· registerPlayerObject(String, PlayerMessageListener): Register a new player object for receiving messages.
· removePlayerListener(PlayerListener): Removes the specified player listener so that it no longer receives events from this player.
· sendMessage(String): Send a message to the player process.
· setPlayerDirectory(File): Set the directory for the player.
· startPlayer(): Start the sound player.
· stopPlayer(): Stop the sound player process.
· unregisterPlayerObject(String): Remove a player object from the player.

Methods

· hasAudio

 public abstract boolean hasAudio()

Does this player support audio?

Returns:: true if audio is supported.


 · 
hasVideo
 public abstract boolean hasVideo()


   Does this player support video?

  

     Returns:
    
 true if video is supported.
  


 · 
sendMessage
 public abstract void sendMessage(String msg) throws IOException, PlayerException


   Send a message to the player process.

  

     Parameters:
    
 msg - the message.
    
 Throws: IOException
    
 if some kind of IO exception occurs
when talking to the player process.
    
 Throws: PlayerException
    
 an exception occurs with a player.
  

 · 
isVirtualPlayer
 public abstract boolean isVirtualPlayer()


   Is the player a 'virtual' player.  A virtual player is a
player which uses a parent player and uses only a subset of
all output channels for output.

  

     Returns:
    
 true if player is a virtual player.
    
 See Also:
    
 getParentPlayer
  

 · 
getParentPlayer
 public abstract Player getParentPlayer()


   Get the parent player of a virtual player.  A parent of a
virtual player is usually the real player.

  

     Returns:
    
 the parent player of the virtual player.  If the
player is a real player, it returns itself.  If a virtual
player has no parent, null is returned.
    
 See Also:
    
 isVirtualPlayer
  

 · 
getVirtualPlayerID
 public abstract String getVirtualPlayerID()


   The player ID string of this player.  It is used to specify
which virtual player the command applies to.

  

     Returns:
    
 a player ID string.
  

 · 
getPlayerID
 public abstract String getPlayerID()


   The player ID string of this player.

  

     Returns:
    
 a player ID string.
  

 · 
getTempMessageID
 public abstract String getTempMessageID()


   Get a temporary ID string for loading samples etc.

  

     Returns:
    
 an unique temporary ID string that can be used with
this player.
  

 · 
addPlayerListener
 public abstract void addPlayerListener(PlayerListener listener)


   Adds the specified player listener to receive events from this
player.

  

     Parameters:
    
 listener - the player listener.
  

 · 
removePlayerListener
 public abstract void removePlayerListener(PlayerListener listener)


   Removes the specified player listener so that it no longer
receives events from this player.

  

     Parameters:
    
 listener - the listener to be removed from the listeners
list.
  

 · 
registerPlayerObject
 public abstract void registerPlayerObject(String id,
                                           PlayerMessageListener sample)


   Register a new player object for receiving messages.  The
player will then know where to send the message from the
player.

  

     Parameters:
    
 id - a string ID used to identify this listener.
    
 sample - the listener that wants to receive messages.
  

 · 
unregisterPlayerObject
 public abstract Object unregisterPlayerObject(String id)


   Remove a player object from the player.

  

     Parameters:
    
 id - the id of the object to be removed.
    
 Returns:
    
 the removed object or null if no object
was found with the given id.
  

 · 
startPlayer
 public abstract void startPlayer() throws Exception


   Start the sound player.  The parameters of the player must be
set before starting the player.

  

     Throws: Exception
    
 if an error occurs when trying to start the
player, an exception will be thrown.
  

 · 
stopPlayer
 public abstract void stopPlayer()


   Stop the sound player process.


 · 
isPlayerRunning
 public abstract boolean isPlayerRunning()


   Is the player running?

  

     Returns:
    
 true if player is running,
false if not running.
  

 · 
setPlayerDirectory
 public abstract void setPlayerDirectory(File dir)


   Set the directory for the player.  Player directory can be
used to load files from sample directories with relative
names.

  

     Parameters:
    
 dir - A directory.
  

 · 
getPlayerDirectory
 public abstract File getPlayerDirectory()


   Get the directory of the player.  Player directory can be used
to load files from sample directories with relative names.

  

     Parameters:
    
 return - Player directory.
  


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