fi.hut.tml.xsmiles.gui.media.general
Interface Media

All Known Subinterfaces:

XSmilesContentHandler

All Known Implementing Classes:

AudioMedia, AWTMediaContentHandler, AWTTextMedia, BaseContentHandler, HTMLContentHandler, ImageMedia, ImageMedia, ImageMedia, JMFMedia, JMFMedia, JMFXineMedia, MediaContentHandler, NativeMedia, TextMedia, TextMedia, TextMedia, UnknownContentHandler, XMLContentHandler, XMLMedia

public interface Media

This is the interface for binary media. The methods should be called in the following order:

1. setUrl(url to media)
2. setContainer(myContainer) [not necessary for audio]
3. setBounds(0,0, 100, 100)
4. addMediaListener(listener) [optional]
5. prefetch()
6. play()
7. pause() [optional]
8. play()
9. close()

Method Summary

void	addMediaListener(MediaListener listener) Adds a MediaListener for this media.
void	close() This will freeze all memory and references to this media.
int	getOriginalDuration() Get the duration of media.
int	getOriginalHeight() Get the real height of the media.
int	getOriginalWidth() Get the real width of the media.
boolean	isStatic() Checks if this media is static or continuous.
void	pause() Pauses the media.
void	play() Plays the media.
void	prefetch() Prefetches media.
void	setBounds(int x, int y, int width, int height) Set the coordinates for the media.
void	setContainer(java.awt.Container container) Sets the container the media will be rendered in.
void	setMediaTime(int millisecs) This moves the time position in media.
void	setMLFCListener(MLFCListener listener) All traffic to the browser, such as ComponentFactory, etc goes through this listener.
void	setSoundVolume(int percentage) Set the sound volume for media.
void	setUrl(java.net.URL url) Sets the URL for this media.
void	showControls(boolean visible) Requests the media player to display a control panel for media.
void	stop() Stops the media.

Method Detail

setMLFCListener

public void setMLFCListener(MLFCListener listener)

All traffic to the browser, such as ComponentFactory, etc goes through this listener. If no listener supplied media players should still function with some basic level.

Parameters:

listener - The MLFCListener supplied by the browser

See Also:

MLFCListener

isStatic

public boolean isStatic()

Checks if this media is static or continuous.

Returns:

true if media is static (duration is zero, see getOriginalDuration().

getOriginalDuration

public int getOriginalDuration()

Get the duration of media. Only applicable for continuous media (audio, video).

Returns:

The duration of media in millisecs. zero for static media (images, text) -1 means indefinite (infinite streamed media or unknown duration).

getOriginalWidth

public int getOriginalWidth()

Get the real width of the media. If not visible, or size is unknown, then returns -1.

Returns:

Original width of the media. -1 means no particular width (audio) or unknown width (text, XML media...)

getOriginalHeight

public int getOriginalHeight()

Get the real height of the media. If not visible, or size is unknown, then returns -1.

Returns:

Original height of the media. -1 means no particular height (audio) or unknown height (text, XML media...)

setUrl

public void setUrl(java.net.URL url)

Sets the URL for this media. This method will only set the URL for the media. To actually download the data, prefetch() or play() should be called.

Parameters:

url - URL for media

setContainer

public void setContainer(java.awt.Container container)

Sets the container the media will be rendered in. If media is audio, this can be null. Can be called if media is already visible in one container, it will then move to the new container.

Parameters:

container - This container will contain the media.

setBounds

public void setBounds(int x,
                      int y,
                      int width,
                      int height)

Set the coordinates for the media. These are relative to the given container, set using setContainer(). Setting the bounds will always immediately move the media to a new location, if it is visible.

setSoundVolume

public void setSoundVolume(int percentage)

Set the sound volume for media. Only applicable for sound media formats.

Parameters:

percentage - Sound volume, 0-100- (0 is quiet, 100 is original loudness, 200 twice as loud; dB change in signal level = 20 log10(percentage / 100) )

prefetch

public void prefetch()
              throws java.lang.Exception

Prefetches media. The URL must have been set using setUrl(). The data will be downloaded from the URL. After calling this method, the media will be in memory and can be played. This is a blocking method.

Throws:

java.lang.Exception

play

public void play()
          throws java.lang.Exception

Plays the media. The media will be added to the container set using setContainer(). It will be visible. It will also play any animation it possibly has. Also, audio media is started using this method.

If the media is not yet prefetched, it will first be prefetched.

Throws:

java.lang.Exception

pause

public void pause()

Pauses the media. The media will stay visible, but any animations will be paused. Audio media will be silent. NOT IMPLEMENTED YET. ?How to restart paused media?

stop

public void stop()

Stops the media. The media will be stopped and it will be invisible. Audio will be silent.

close

public void close()

This will freeze all memory and references to this media. If the media is not yet stopped, it will first be stopped.

setMediaTime

public void setMediaTime(int millisecs)

This moves the time position in media. Works only for continuous media (video/audio).

Parameters:

millisecs - Time in millisecs

addMediaListener

public void addMediaListener(MediaListener listener)

Adds a MediaListener for this media. The listener will be called

1. When the media has been prefetched. (NOT IMPLEMENTED YET).
2. When the media ends. (continuous media, video/audio)

Static media, such as text and images will end immediately, notifying immediately about the end of media.

showControls

public void showControls(boolean visible)

Requests the media player to display a control panel for media. For audio and video, these can be a volume/play/stop controls, for images, these can be zoom controls etc. The controls are GUI dependent, generated through ComponentFactory.

Parameters:

visible - true=Display controls, false=don't display controls.