mediaframe.mpeg1
Class MovieScreen

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--mediaframe.mpeg1.MovieScreen

All Implemented Interfaces:

javax.accessibility.Accessible, java.awt.image.ImageObserver, java.awt.MenuContainer, java.lang.Runnable, java.io.Serializable

class MovieScreen

extends java.awt.Panel

implements java.lang.Runnable

The MovieScreen class represents a panel on which the movie is shown.

Field Summary

boolean	appletStarted True if the applet is started.
java.awt.image.ColorModel	colorModel The Color model for the movie picture.
int	currentBufferingPercent The current "buffering" percent.
(package private) Element	elem The Element object with the pixels of the current frame.
static int	ENDED "Ended" state of the player.
static int	ErrNum The code of last error.
static int	ERROR "Error" state of the player.
private java.awt.Font	ERROR_FONT The font of the text to print errors.
private java.awt.Graphics	graphics The graphics context to paint the movie screen.
private boolean	java2_platform Flag, eguals true, if the current JRE is java2.
static int	L_STOPPING "Stopped" after locking state of the player.
private long	lastPts Presentation timestamp for last frame (reqd when estimating).
static int	LOCKED "Locked" state of the player.
boolean	movieDestroy True if the applet's destroy method has been called.
int	movieState The state of the player.
private io_tool	mpeg_stream The tool for accessing the mpeg bit stream.
static java.lang.String	Msg The message text of last error.
private long	now The current playing time in milliseconds.
static int	PAUSED "Paused" state of the player.
private static int[]	picLags 1/picrate, delay in milliseconds between frames.
java.awt.Image	Picture The movie picture.
static int	PLAYED "Played" state of the player.
boolean	playing The current playing status.
int	post_screen_delay The delay in milliseconds between end images to show.
boolean	post_screen_loop True if end images are looped.
private boolean	post_started True if movie end image animation is showing.
java.awt.Image[]	postImage The array of end images.
private int	postImageIndex Current image index for end images.
int	pre_screen_delay The delay in milliseconds between startup images to show.
boolean	pre_screen_loop True if startup images are looped.
private boolean	pre_started True if the startup image animation is showing.
java.awt.Image[]	preImage The array of startup images.
private int	preImageIndex Current image index for startup images.
private long	pts The time in milliseconds of the current frame to play.
static int	REBUFFERING "Re-buffering" state of the player.
int	scanSize The current size of the scan line.
java.awt.Image	screen The image for double buffering.
private java.lang.Thread	screen_thread The thread for playing startup or end image animation.
java.awt.image.MemoryImageSource	source The producer to produce pixels for the movie picture.
long	startPlayingTime The start time of the movie playback.
long	startPrintingBandwidth The start time when the 'detecting bandwith' message is shown.
long	startTime The start playing time.
static int	STARTUP "Startup" state of the player.
static int	STOPPED "Stopped" state of the player.
private java.awt.Font	TEXT_BI_FONT The bold font of the text to print messages.
private java.awt.Font	TEXT_FONT The font of the text to print messages.
private MPEG1	videoPlayer The main applet's object.
private boolean	windows_platform Flag, eguals true, if the current os is Windows.

Fields inherited from class java.awt.Panel

Fields inherited from class java.awt.Container

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

MovieScreen(MPEG1 videoPlayer)
Constructs a MovieScreen using the specified applet object.

Method Summary

private int	getLag() Calculates amount of intra-frame delay from current picRate.
void	init(io_tool _mpeg_stream) Inits this MovieScreen object with the specified tool for accessing the mpeg bit stream.
void	myPaint() Draws the movie screen.
boolean	nextFrame() Pauses the movie playback or calibrates the playing time depending from the state of the player (playing, pausing, etc), the current playing time and the current time of the frame.
void	paint(java.awt.Graphics g) Paints the controls and applet's detecting bandwidth/buffering text on the screen's graphics context and calls to the method that paints the movie's frame and prints other text/error messages.
private void	paintScreen(java.awt.Graphics g) Paints the movie's frame on the screen's graphics context and prints text/error messages (f.e. rebuffering information or MediaFrame locked error).
void	repaint() Redraws the movie screen.
void	run() The main thread's method (enter point) that plays startup or end image animation of the applet.
void	setElement(Element _elem) Sets the Element object with the pixels of the current frame.
void	start() Starts playing startup or end image animation of the applet.
void	stop() Stops playing startup or end image animation of the applet.
void	update(java.awt.Graphics g) Stub, overwrites the "update()" method of Panel (does nothing).
void	write(java.lang.String s, int x, int y) Prints the string on the screen.

Methods inherited from class java.awt.Panel

addNotify, getAccessibleContext

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getListeners, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFont, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

elem

Element elem

The Element object with the pixels of the current frame.

mpeg_stream

private io_tool mpeg_stream

The tool for accessing the mpeg bit stream.

Picture

public java.awt.Image Picture

The movie picture.

screen

public java.awt.Image screen

The image for double buffering.

source

public java.awt.image.MemoryImageSource source

The producer to produce pixels for the movie picture.

colorModel

public java.awt.image.ColorModel colorModel

The Color model for the movie picture.

scanSize

public int scanSize

The current size of the scan line.

currentBufferingPercent

public int currentBufferingPercent

The current "buffering" percent.

playing

public boolean playing

The current playing status.

ErrNum

public static int ErrNum

The code of last error.

Msg

public static java.lang.String Msg

The message text of last error.

appletStarted

public boolean appletStarted

True if the applet is started.

preImageIndex

private int preImageIndex

Current image index for startup images.

postImageIndex

private int postImageIndex

Current image index for end images.

preImage

public java.awt.Image[] preImage

The array of startup images.

postImage

public java.awt.Image[] postImage

The array of end images.

pre_screen_delay

public int pre_screen_delay

The delay in milliseconds between startup images to show.

post_screen_delay

public int post_screen_delay

The delay in milliseconds between end images to show.

pre_screen_loop

public boolean pre_screen_loop

True if startup images are looped.

post_screen_loop

public boolean post_screen_loop

True if end images are looped.

startPlayingTime

public long startPlayingTime

The start time of the movie playback.

startPrintingBandwidth

public long startPrintingBandwidth

The start time when the 'detecting bandwith' message is shown.

pre_started

private boolean pre_started

True if the startup image animation is showing.

post_started

private boolean post_started

True if movie end image animation is showing.

STARTUP

public static final int STARTUP

"Startup" state of the player.

See Also:

Constant Field Values

PLAYED

public static final int PLAYED

"Played" state of the player.

See Also:

Constant Field Values

PAUSED

public static final int PAUSED

"Paused" state of the player.

See Also:

Constant Field Values

STOPPED

public static final int STOPPED

"Stopped" state of the player.

See Also:

Constant Field Values

ENDED

public static final int ENDED

"Ended" state of the player.

See Also:

Constant Field Values

ERROR

public static final int ERROR

"Error" state of the player.

See Also:

Constant Field Values

LOCKED

public static final int LOCKED

"Locked" state of the player.

See Also:

Constant Field Values

L_STOPPING

public static final int L_STOPPING

"Stopped" after locking state of the player.

See Also:

Constant Field Values

REBUFFERING

public static final int REBUFFERING

"Re-buffering" state of the player.

See Also:

Constant Field Values

movieState

public int movieState

The state of the player.

startTime

public long startTime

The start playing time.

TEXT_FONT

private java.awt.Font TEXT_FONT

The font of the text to print messages.

TEXT_BI_FONT

private java.awt.Font TEXT_BI_FONT

The bold font of the text to print messages.

windows_platform

private boolean windows_platform

Flag, eguals true, if the current os is Windows.

java2_platform

private boolean java2_platform

Flag, eguals true, if the current JRE is java2.

ERROR_FONT

private java.awt.Font ERROR_FONT

The font of the text to print errors.

movieDestroy

public boolean movieDestroy

True if the applet's destroy method has been called.

now

private long now

The current playing time in milliseconds.

pts

private long pts

The time in milliseconds of the current frame to play.

lastPts

private long lastPts

Presentation timestamp for last frame (reqd when estimating).

videoPlayer

private MPEG1 videoPlayer

The main applet's object.

picLags

private static int[] picLags

1/picrate, delay in milliseconds between frames.

graphics

private java.awt.Graphics graphics

The graphics context to paint the movie screen.

screen_thread

private volatile java.lang.Thread screen_thread

The thread for playing startup or end image animation.

Constructor Detail

MovieScreen

public MovieScreen(MPEG1 videoPlayer)

Constructs a MovieScreen using the specified applet object. Adds mouse listener to the applet and if necessary fixs the netscape bug under linux platform with the italic fonts.

Parameters:

videoPlayer - the applet object.

Method Detail

init

public void init(io_tool _mpeg_stream)

Inits this MovieScreen object with the specified tool for accessing the mpeg bit stream.

Parameters:

_mpeg_stream - the tool for accessing the mpeg bit stream.

setElement

public void setElement(Element _elem)

Sets the Element object with the pixels of the current frame.

Parameters:

_elem - the Element object with the pixels of the current frame.

getLag

private int getLag()

Calculates amount of intra-frame delay from current picRate. This value is used only when an explicit PTS value is not available.

Returns:

the amount of intra-frame delay from current picRate.

update

public void update(java.awt.Graphics g)

Stub, overwrites the "update()" method of Panel (does nothing).

Overrides:

update in class java.awt.Container

Parameters:

g - the graphics context to paint.

myPaint

public void myPaint()

Draws the movie screen. Gets the graphics context and calls the method to draw the screen on it.

write

public void write(java.lang.String s,
                  int x,
                  int y)

Prints the string on the screen.

Parameters:

s - the string to print.

x - the x coordinate of the string's first character (left baseline point).

y - the y coordinate of the string's first character (left baseline point).

repaint

public void repaint()

Redraws the movie screen.

Overrides:

repaint in class java.awt.Component

paint

public void paint(java.awt.Graphics g)

Paints the controls and applet's detecting bandwidth/buffering text on the screen's graphics context and calls to the method that paints the movie's frame and prints other text/error messages.

Overrides:

paint in class java.awt.Container

Parameters:

g - the graphics context to paint.

paintScreen

private void paintScreen(java.awt.Graphics g)

Paints the movie's frame on the screen's graphics context and prints text/error messages (f.e. rebuffering information or MediaFrame locked error).

Parameters:

g - the graphics context to paint.

nextFrame

public boolean nextFrame()
                  throws java.lang.InterruptedException

Pauses the movie playback or calibrates the playing time depending from the state of the player (playing, pausing, etc), the current playing time and the current time of the frame.

Returns:

true, if the frame should be painted.

Throws:

java.lang.InterruptedException - raises if another process interrupts the current process.

start

public void start()

Starts playing startup or end image animation of the applet.

run

public void run()

The main thread's method (enter point) that plays startup or end image animation of the applet.

Specified by:

run in interface java.lang.Runnable

stop

public void stop()

Stops playing startup or end image animation of the applet.