org.opensourcephysics.media.gif

Class GifVideoRecorder

java.lang.Object

org.opensourcephysics.media.core.ScratchVideoRecorder

org.opensourcephysics.media.gif.GifVideoRecorder

All Implemented Interfaces:

VideoRecorder

public class GifVideoRecorder
extends ScratchVideoRecorder

This is a gif video recorder that uses scratch files.

Version:

1.0

Author:

Douglas Brown

Field Summary

Fields inherited from class org.opensourcephysics.media.core.ScratchVideoRecorder

canRecord, chooser, dim, frameCount, frameDuration, frameImage, hasContent, isSaved, saveChanges, saveFile, scratchFile, scratchName, scratchNumber, videoType

Constructor Summary

Constructors

Constructor and Description
GifVideoRecorder() Constructs a QTVideoRecorder object.

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	append(java.awt.Image image) Appends a frame to the current video.
AnimatedGifEncoder	getGifEncoder() Gets the encoder used by this recorder.
protected void	saveScratch() Saves the video to the current scratchFile.
void	setFrameDuration(double millis) Sets the time duration per frame.
protected boolean	startRecording() Starts the video recording process.

Methods inherited from class org.opensourcephysics.media.core.ScratchVideoRecorder

addFrame, createScratch, createVideo, createVideo, createVideo, getFileName, getVideo, saveVideo, saveVideo, saveVideoAs, selectFile, setFileName

Methods inherited from class java.lang.Object

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

Constructor Detail

GifVideoRecorder

public GifVideoRecorder()

Constructs a QTVideoRecorder object.

Method Detail

setFrameDuration

public void setFrameDuration(double millis)

Sets the time duration per frame.

Specified by:

setFrameDuration in interface VideoRecorder

Overrides:

setFrameDuration in class ScratchVideoRecorder

Parameters:

millis - the duration per frame in milliseconds

getGifEncoder

public AnimatedGifEncoder getGifEncoder()

Gets the encoder used by this recorder. The encoder has methods for setting a transparent color, setting a repeat count (0 for continuous play), and setting a quality factor.

Returns:

the gif encoder

Throws:

java.io.IOException

saveScratch

protected void saveScratch()

Saves the video to the current scratchFile.

Specified by:

saveScratch in class ScratchVideoRecorder

startRecording

protected boolean startRecording()

Starts the video recording process.

Specified by:

startRecording in class ScratchVideoRecorder

Returns:

true if video recording successfully started

append

protected boolean append(java.awt.Image image)

Appends a frame to the current video.

Specified by:

append in class ScratchVideoRecorder

Parameters:

image - the image to append

Returns:

true if image successfully appended