Using JMF in JInternal Frames
Hello,
I'm am using several JInternalFrames within a desktop pane. Some of these frames have a JMF visual component.
Is it possible to ensure that if internal frames are selected that they are not obscured by a visual component on other frames??? It seems that the JMF visual component is heavyweight and is thus always on top of anything else.
thanks,
Oli Gosling
Hello Oli,
I have the same problem. I've tried a lot of things (like adding to panels instead of a getGetContentPane, to send back etc.), but I still can not send to back the Visual Component (as if it is on the glass pane of the JDesktopPane).
Have you found a solution or should I think of some tabbed pane or splitted panes or even individual frames?
thanks,
stefan.
PS: it may be a bug?
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import javax.swing.JInternalFrame;
import javax.swing.JDesktopPane;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JMenuBar;
import javax.swing.JFrame;
import javax.swing.KeyStroke;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import java.awt.Graphics.*;
import javax.swing.JOptionPane;
import java.io.*;
import java.util.*;
*This is the main GUI of the program.
public class mainGUI extends JFrame
implements ActionListener,
KeyListener{
JDesktopPane desktop;
Documento frame;
private Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
private JPanel toolbar, editarea, resultarea, blankPanel;
private JMenu file, edit, project;
private JMenuItem f_open, f_new, f_save, f_saveas, f_exit, e_select, e_copy, e_paste, p_compile;
private JTextArea resultfield, editfield,editArea, tstr;
private JButton bcompile;
private JFileChooser fc = new JFileChooser();
private String filepath;
private ImageIcon bugicon;
private static int docNum = 0;
private boolean b_openfile;
File filename;
public mainGUI() {
super("DGJ Program Scanner");
setSize(800,600);
setLocation((screen.width-800)/2, (screen.height-600)/2);
/*Creates the workspace*/
desktop = new JDesktopPane();
setContentPane(desktop);
setJMenuBar(createMenuBar());
/*Make dragging a little faster*/
desktop.setDragMode(JDesktopPane.OUTLINE_DRAG_MODE);
*This function creates the menu bar
protected JMenuBar createMenuBar() {
/*Initializes/instantiates the menu bar and its items*/
file = new JMenu("File");
edit = new JMenu("Edit");
project = new JMenu("Project");
f_new = new JMenuItem("Create new file");
f_open = new JMenuItem("Open file...");
f_save = new JMenuItem("Save current file");
f_saveas = new JMenuItem("Save As...");
f_exit = new JMenuItem("Exit program");
e_select = new JMenuItem("Select All");
e_copy = new JMenuItem("Copy selected");
e_paste = new JMenuItem("Paste selected");
p_compile = new JMenuItem("Scan current file for errors");
/*Adds listeners to the menu items*/
f_open.setActionCommand("f_open");
f_open.addActionListener(this);
f_save.setActionCommand("f_save");
f_save.addActionListener(this);
f_saveas.addActionListener(this);
f_saveas.setActionCommand("f_saveas");
f_new.setActionCommand("f_new");
f_new.addActionListener(this);
f_exit.setActionCommand("f_exit");
f_exit.addActionListener(this);
e_select.setActionCommand("e_select");
e_select.addActionListener(this);
e_paste.setActionCommand("e_paste");
e_paste.addActionListener(this);
e_copy.setActionCommand("e_copy");
e_copy.addActionListener(this);
/*Creates the icon of the bug*/
bugicon = new ImageIcon("images/ladybug.gif");
/*Creates the menu bar*/
JMenuBar menu = new JMenuBar();
menu.add(file);
file.add(f_new);
file.add(f_open);
file.add(f_save);
file.add(f_saveas);
file.add(f_exit);
menu.add(edit);
edit.add(e_select);
edit.add(e_copy);
edit.add(e_paste);
menu.add(project);
project.add(p_compile);
/*Disables the save current file menu...(when program starts, no file is open yet)*/
f_save.setEnabled(false);
f_saveas.setEnabled(false);
return menu;
//React to menu selections.
public void actionPerformed(ActionEvent e) {
if ("f_new".equals(e.getActionCommand()))
{ //new
createFrame(null);
f_saveas.setEnabled(true);
else if("f_open".equals(e.getActionCommand()))
{//open documento
fc.setFileFilter(new SpanFilter());
int retval = fc.showOpenDialog(mainGUI.this);
tstr = new JTextArea();
/*This checks if the user has chosen a file*/
if (retval == JFileChooser.APPROVE_OPTION) {
filename = fc.getSelectedFile();
filepath = filename.getPath();
openFile(filename, new Point(30,30));
else if("f_save".equals(e.getActionCommand()))
try {
BufferedWriter out = new BufferedWriter(new FileWriter(filepath));
String str;
str = editArea.getText();
editArea.setText("");
int length = str.length();
out.write(str, 0, length);
out.close();
} catch (Exception ex) {}
JInternalFrame fr = new JInternalFrame();
fr = desktop.getSelectedFrame();
Point p = fr.getLocation();
fr.dispose();
openFile(filename, p);
else if("f_saveas".equals(e.getActionCommand()))
fc.setFileFilter(new SpanFilter());
int retval = fc.showSaveDialog(mainGUI.this);
if (retval == JFileChooser.APPROVE_OPTION) {
filename = fc.getSelectedFile();
filepath = filename.getPath();
if(!(filepath.contains(".dgj")))
filepath+=".dgj";
try {
BufferedWriter out = new BufferedWriter(new FileWriter(filepath));
String str;
str = editArea.getText();
int length = str.length();
out.write(str, 0, length);
out.close();
} catch (Exception ex) {}
Point p = frame.getLocation();
frame.dispose();
// editArea.setText("");
openFile(filename, p);
else if("e_select".equals(e.getActionCommand()))
editArea.selectAll();
else if("e_copy".equals(e.getActionCommand()))
editArea.copy();
else if("e_paste".equals(e.getActionCommand()))
editArea.paste();
else if("f_exit".equals(e.getActionCommand()))
{ //quit
quit();
public void openFile(File filename, Point p)
/*Reads the file*/
try {
BufferedReader in = new BufferedReader(new FileReader(filepath));
String str;
/*empties the textarea*/
tstr.setText("");
str = in.readLine();
/*Copy each line of the file into the temporary textarea*/
do{
tstr.append(str);
str = in.readLine();
/* the "\n" is for the line to appear in the next line in the textarea,
* the "\r" is for windows system, wherein "\r" is required for the text
* to appear in beginning of the first line*/
if(str!=null)
tstr.append("\r\n");
}while (str != null);
/*Opens the new frame*/
createFrame(filename, filename.getName(), tstr.getText(), p);
in.close();
} catch (Exception ex){}
b_openfile = true;
f_save.setEnabled(true);
f_saveas.setEnabled(true);
*Create a new internal frame.
protected void createFrame(File f) {
frame = new Documento(f);
/* frame = new JInternalFrame("Document "+(++docNum),
true, //resizable
true, //closable
true, //maximizable
true);
docNum++;
frame.setSize(600,400);
frame.setLocation(20*(docNum%10), 20*(docNum%10));
editArea = new JTextArea();
JScrollPane scroll = new JScrollPane(editArea);
editArea.addKeyListener(this);
editArea.append("");
frame.add(scroll);
frame.setVisible(true); //necessary as of 1.3
desktop.add(frame);
try {
frame.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
*Overwrite an existing internal frame for an open file
protected void createFrame(File f, String title, String text, Point P) {
frame = new Documento(title, f, P);
frame.setSize(600,400);
frame.setLocation(P);
editArea = new JTextArea();
JScrollPane scroll = new JScrollPane(editArea);
editArea.setText("");
editArea.addKeyListener(this);
editArea.append(text);
frame.add(scroll);
frame.setVisible(true); //necessary as of 1.3
desktop.add(frame);
try {
frame.setSelected(true);
} catch (java.beans.PropertyVetoException e) {}
//Quit the application.
protected void quit() {
System.exit(0);
* Create the GUI and show it. For thread safety,
* this method should be invoked from the
* event-dispatching thread.
private static void createAndShowGUI() {
//Make sure we have nice window decorations.
//JFrame.setDefaultLookAndFeelDecorated(true);
//Create and set up the window.
mainGUI frame = new mainGUI();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Display the window.
frame.setVisible(true);
public void keyTyped(KeyEvent k){}
public void keyPressed(KeyEvent k)
if(k.getKeyCode()==10)
editArea.append("\r");
public void keyReleased(KeyEvent k){}
public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}here's the one that extends jinternalframe
import javax.swing.JInternalFrame;
import javax.swing.plaf.InternalFrameUI;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
import java.util.*;
/* Used by mainGUI.java */
public class Documento extends JInternalFrame {
static final int xOffset = 30, yOffset = 30;
static JTextArea editArea;
static int docNum = 0;
static File file;
*The constructer for a new documento
public Documento(File file) {
super("Document "+(++docNum),
true, //resizable
true, //closable
true, //maximizable
true);//iconifiable
docNum++;
this.file = file;
setSize(600,400);
setLocation(xOffset*(docNum%10), yOffset*(docNum%10));
// setUI(new InternalFrameUI());
*The constructor for an existing documento
public Documento(String title, File file, Point p) {
super(title,
true, //resizable
true, //closable
true, //maximizable
true);//iconifiable
this.file = file;
setSize(600,400);
setLocation(p);
// setUI(new InternalFrameUI());
public int getNum()
return docNum;
public File getPath()
return file;
}I know it's pretty lengthy...it's probably all messed up since I'm lost :p
Thanks if you could help me!I would be glad to help, but first I need a clarification. If I understand properly, you have two Java classes that you have created: the "main GUI" (which is most likely a JFrame extension in which the constructor adds a JDesktopPane to the content pane) and "Documento" (which you say is a JInternalFrame extension).
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if anyone could give me a hand or tell me where to look, i would be much obliged!
thanks so much,
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[http://java.sun.com/javase/technologies/desktop/media/jmf/2.1.1/solutions/SwingJMF.html]
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ex.printStackTrace();
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ex.printStackTrace();
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Regards,
Sanjay !!Hello
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Failed to realize: com.sun.media.ProcessEngine@618d26
Cannot build a flow graph with the customized options:
Unable to transcode format: mpeglayer3, 44100.0 Hz, 16-bit, Stereo, LittleEndian, Signed, 16000.0 frame rate, FrameSize=32768 bits
to: mpegaudio/rtp, 8000.0 Hz, 8-bit, Mono
outputting to: RAW/RTP
Error: Unable to realize com.sun.media.ProcessEngine@618d26
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Fast acquring of images using JMF
Hello!
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I attach the code that I have used for reading the frames.
Sincerely,
Artur Rataj
* A video input driver that uses Java Media Framework.
* This file is provided under the terms of the GNU General Public License.
* version 0.1, date 2004-07-21, author Artur Rataj
package video.drivers;
import java.io.*;
import java.awt.*;
import java.awt.image.*;
import javax.media.*;
import javax.media.protocol.*;
import javax.media.control.*;
import javax.media.format.*;
import javax.media.util.BufferToImage;
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* The input stream processor.
Processor processor;
* The stream from the input video device.
PushBufferStream frameStream;
* A converter from stream data to an image.
BufferToImage frameStreamConverter;
* A video stream buffer.
Buffer videoBuffer;
* Constructs a new driver.
public JMFDriver(String deviceAddress, int width, int height, int bitsPerPixel)
throws VideoDriverException {
super(deviceAddress, width, height, bitsPerPixel);
MediaLocator locator = new MediaLocator(deviceAddress);
if(locator == null)
throw new VideoDriverException("Device not found: " + deviceAddress);
javax.media.protocol.DataSource source;
try {
source = javax.media.Manager.createDataSource(locator);
} catch(IOException e) {
throw new VideoDriverException("Could not read device " + deviceAddress +
": " + e.toString());
} catch(NoDataSourceException e) {
throw new VideoDriverException("Could not read device " + deviceAddress +
": " + e.toString());
if(!( source instanceof CaptureDevice ))
throw new VideoDriverException("The device " + deviceAddress +
" not recognized as a video input one.");
FormatControl[] formatControls =
((CaptureDevice)source).getFormatControls();
if(formatControls == null || formatControls.length == 0)
throw new VideoDriverException("Could not set the format of images from " +
deviceAddress + ".");
VideoFormat videoFormat = null;
searchFormat:
for(int i = 0; i < formatControls.length; ++i) {
FormatControl c = formatControls;
Format[] formats = c.getSupportedFormats();
for(int j = 0; j < formats.length; ++j)
if(formats[j] instanceof VideoFormat) {
VideoFormat f = (VideoFormat)formats[j];
if(f.getSize().getWidth() == this.width &&
f.getSize().getHeight() == this.height) {
int bpp = -1;
if(f instanceof RGBFormat)
bpp = ((RGBFormat)f).getBitsPerPixel();
else if(f instanceof YUVFormat) {
YUVFormat yuv = (YUVFormat)f;
bpp = (yuv.getStrideY() + yuv.getStrideUV())*8/
this.width;
if(bpp == bitsPerPixel) {
videoFormat = (VideoFormat)c.setFormat(f);
break searchFormat;
if(videoFormat == null)
throw new VideoDriverException("Could not find the format of images from " +
deviceAddress + " at " + bitsPerPixel + " bits per pixel.");
try {
source.connect();
} catch(IOException e) {
throw new VideoDriverException("Could not connect to the device " +
deviceAddress + ": " + e.toString());
try {
processor = Manager.createProcessor(source);
} catch(IOException e) {
throw new VideoDriverException("Could not initialize the processing " +
"of images from " + deviceAddress + ": " + e.toString());
} catch(NoProcessorException e) {
throw new VideoDriverException("Could not initialize the processing " +
"of images from " + deviceAddress + ": " + e.toString());
processor.addControllerListener(this);
synchronized(this) {
processor.realize();
try {
wait();
} catch(InterruptedException e) {
throw new VideoDriverException("Could not initialize the processing " +
"of images from " + deviceAddress + ": " + e.toString());
processor.start();
PushBufferDataSource frameSource = null;
try {
frameSource = (PushBufferDataSource)processor.getDataOutput();
} catch(NotRealizedError e) {
/* empty */
PushBufferStream[] frameStreams = frameSource.getStreams();
for(int i = 0; i < frameStreams.length; ++i)
if(frameStreams[i].getFormat() instanceof VideoFormat) {
frameStream = frameStreams[i];
break;
videoBuffer = new Buffer();
videoBuffer.setTimeStamp(0);
videoBuffer.setFlags(videoBuffer.getFlags() |
Buffer.FLAG_NO_WAIT |
Buffer.FLAG_NO_DROP |
Buffer.FLAG_NO_SYNC);
processor.prefetch();
public void controllerUpdate(ControllerEvent event) {
if(event instanceof RealizeCompleteEvent)
synchronized(this) {
notifyAll();
* Acquires an image from the input video device.
public Image acquireImage() throws VideoDriverException {
try {
frameStream.read(videoBuffer);
} catch(IOException e) {
throw new VideoDriverException("Could not acquire a video frame: " +
e.toString());
frameStreamConverter = new BufferToImage(
(VideoFormat)frameStream.getFormat());
Image out = frameStreamConverter.createImage(videoBuffer);
return out;
* Closes the input video device.
public void close() {
processor.close();
public static void main(String[] args) throws Exception {
JMFDriver driver = new JMFDriver("v4l://0", 768, 576, 16);
while(true)
Image image = driver.acquireImage();
System.out.print(".");
System.out.flush();This is how you do this:
First you must know upfront what type of a format your camera is using,
all the valid formats are static members of BufferedImage.
Next you need to create a BufferedImage of the same format.
Here is an example:
My creative webcam is set to: 640x480 RGB 24bit color. i Create a BufferedImage into which i will copy the buffer:
BufferedImage buff = new BufferedImage(640,480,BufferedImage.TYPE_3BYTE_BGR);
Next the copy operation where appropriate
cbuffer is my javax.media.Buffer from which i will copy the image data:
System.arraycopy((byte[])cbuffer.getData(), 0, ((DataBufferByte) buff.getRaster().getDataBuffer()).getData(),0,img_size_bytes);
Things to note here, are i cast the cbuffer.getData() to byte[] because that is the type of data this is. I cast buff.getRaster().getDataBuffer() to DataBufferByte because the bufferedimage is of type TYPE_3BYTE_BGR.
also, img_size_bytes equals to 640*480*3
This operation will copy the raw buffer into your buffered image avoiding the use of BufferToImage
Only problem is the image will be flipped, but just flip the webcam to correct this =) -
JMF Video Player Frame Rate comes down to zero
Hi
I am working on video Player using jmf. I am playing .mov file in the Applet. The appled have been signed and this part is working fine.
I am able to get the video from server to the client using signed applet. But the problem now i am facing is that after few seconds of video download the frame rate and bit rate both comes down to Zero and the movie stops playing. I am using .mov extension with approximately 2-8 MB size of video.
As i feels problem is coming with the http protocol. Because while playing the local video file with the same code it is performing well.This blog is written by one of the principle guys who writes the Flash plug-in.
http://blog.kaourantin.net/?p=83
I think it might have some answers for you--not the answer you want.
Maybe you are looking for
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