ch.unizh.ini.jaer.projects.opticalflow.graphics
Class MotionViewer.Player

java.lang.Object
  ch.unizh.ini.jaer.projects.opticalflow.graphics.MotionViewer.Player

All Implemented Interfaces:

InputDataFileInterface

Enclosing class:

MotionViewer

public class MotionViewer.Player
extends java.lang.Object
implements InputDataFileInterface

this class handles file input of AEs to control the number of events/sample or period of time in the sample, etc. It handles the file input stream, opening a dialog box, etc. It also handles synchronization of different viewers as follows:

If the viwer is not synchronized, then all calls from the GUI are passed directly to this instance of AEPlayer. Thus local control always happens.

If the viewer is sychronized, then all GUI calls pass instead to the CaviarViewer instance that contains (or started) this viewer. Then the CaviarViewer AEPlayer calls all the viewers to take the player action (e.g. rewind, go to next slice, change direction).

Thus whichever controls the user uses to control playback, the viewers are all sychronized properly without recursively. The "master" is indicated by the GUI action, which routes the request either to this instance's AEPlayer or to the CaviarViewer AEPlayer.

Nested Class Summary

class

MotionViewer.Player.FileDeleter

Constructor Summary

MotionViewer.Player()

Method Summary

float	getFractionalPosition()
MotionInputStream	getMotionInputStream()
MotionData	getNextData()
int	getTime()
boolean	isChoosingFile()
boolean	isPaused() gets the MotionViewer paused flag
boolean	isPlayingForwards()
void	mark() mark the current position.
void	openInputFileDialog() called when user asks to open data file file dialog
void	pause()
int	position() return position in events
void	position(int event) set position in units of the file, e.g.
void	resume()
void	rewind() rewind to the start, or to the marked position, if it has been set
void	setFractionalPosition(float frac) Sets fractional position in units of the file
void	setPaused(boolean yes) sets the MotionViewer paused flag
void	setTime(int time)
long	size()
void	slowDown()
void	speedUp()
void	startPlayback(java.io.File file)
void	stopPlayback() stops playback.
void	toggleDirection()
void	unmark() clear any marked position

Methods inherited from class java.lang.Object

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

Constructor Detail

MotionViewer.Player

public MotionViewer.Player()

Method Detail

isChoosingFile

public boolean isChoosingFile()

openInputFileDialog

public void openInputFileDialog()

called when user asks to open data file file dialog

startPlayback

public void startPlayback(java.io.File file)
                   throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

stopPlayback

public void stopPlayback()

stops playback. If not in PLAYBACK mode, then just returns. If playing back, could be waiting during sleep or during CyclicBarrier.await call in CaviarViewer. In case this is the case, we send an interrupt to the the ViewLoop thread to stop this waiting.

rewind

public void rewind()

Description copied from interface: InputDataFileInterface

rewind to the start, or to the marked position, if it has been set

Specified by:

rewind in interface InputDataFileInterface

pause

public void pause()

resume

public void resume()

setPaused

public void setPaused(boolean yes)

sets the MotionViewer paused flag

isPaused

public boolean isPaused()

gets the MotionViewer paused flag

getNextData

public MotionData getNextData()

toggleDirection

public void toggleDirection()

speedUp

public void speedUp()

slowDown

public void slowDown()

isPlayingForwards

public boolean isPlayingForwards()

getFractionalPosition

public float getFractionalPosition()

Specified by:

getFractionalPosition in interface InputDataFileInterface

Returns:

fractional position in total events

mark

public void mark()
          throws java.io.IOException

Description copied from interface: InputDataFileInterface

mark the current position.

Specified by:

mark in interface InputDataFileInterface

Throws:

java.io.IOException - if there is some error in reading the data

position

public int position()

Description copied from interface: InputDataFileInterface

return position in events

Specified by:

position in interface InputDataFileInterface

position

public void position(int event)

Description copied from interface: InputDataFileInterface

set position in units of the file, e.g. events or frames

Specified by:

position in interface InputDataFileInterface

Parameters:

event - the number to position to

size

public long size()

Specified by:

size in interface InputDataFileInterface

Returns:

size in units of the file

unmark

public void unmark()

Description copied from interface: InputDataFileInterface

clear any marked position

Specified by:

unmark in interface InputDataFileInterface

setFractionalPosition

public void setFractionalPosition(float frac)

Description copied from interface: InputDataFileInterface

Sets fractional position in units of the file

Specified by:

setFractionalPosition in interface InputDataFileInterface

Parameters:

frac - 0-1 float range, 0 at start, 1 at end

setTime

public void setTime(int time)

getTime

public int getTime()

getMotionInputStream

public MotionInputStream getMotionInputStream()