Desk-of-David said:
I don't suppose anyone has some working code for this? I've tried a
number of variations (after tons of Googling) and had assumed that the
issue might be found in the FormatControl area, but could not seem to
get it working. I can get the program to display the options that
should be available, such as:
0 RGB, 320x240, Length=230400, 24-bit, Masks=3:2:1,
PixelStride=3, LineStride=960, Flipped
1 RGB, 160x120, Length=57600, 24-bit, Masks=3:2:1,
PixelStride=3, LineStride=480, Flipped
However, I'm pretty clued out as to how to get the thing to accept
format #1. Since this program just needs to run in the console, I can
preset the exact format that I want and don't need to make it 'user
friendly' and let the user select.
Were you saying that my program can *also* control the brightness,
contrast, gain etc, inside of Java? I had hoped so, but had wondered
if it was only going to be inside of the webcam driver software
instead. Certainly my preference would be to control it directly
inside of Java so I can ensure that everything is cranked way up. If
it isn't all maxed out, then it will only give me 1 or 2 unique
colors. If I use the webcam software to take a still image, I will
get about 300 unique colors inside of a 160x120 - that size seems to
give me the best results. This process is key for me as I'm taking
the picture in total darkness and need to isolate any 'noise' that
comes across the line. Goofy project, but that's what makes these
things "fun".
Thanks again for any help anyone can give.
David
David:
You will have to fix some of the line wrap but below is my web cam
software. It hasn't been updated in some time and does some funky
things but it should give you a good idea how to get your code to do
what you want. The brightness and camera select are in fact features of
the driver but when you display the format control there will be a
button to open it. JMF has some problems and it hasn't been worked on
by Sun in years. Send me your email if you want the three button images.
k...
//
//
//
// WebCam - Knute's Web Cam Program
//
//
// Version Date Modification
// ------- ---------
---------------------------------------------------
// 0.40 05 feb 04 housekeeping, minor changes for sdk 1.5, start
// version record keeping
// 0.41 18 mar 04 stop and close player when program closed
from X on
// frame
// 0.42 18 mar 04 add info dialog when executing command after
grab
// 0.50 20 mar 04 add FormatControl dialog to File menu
// 0.51 28 mar 04 disable format control when no camera selected
// 0.52 28 mar 04 add code to detect controller error
// 0.53 30 mar 04 changes to run() for title display
// 0.60 31 mar 04 add ImageIcons to buttons, add menu item to
enable
// showing if execute dialog
// 0.61 07 jul 06 add Manager hint
// 0.62 23 jul 06 housekeeping
// 0.63 24 jul 06 improved initial format selection, more
housekeeping
// 0.64 30 jul 06 clean up execute after grab code
// 0.65 01 aug 06 add code to runnable to put gui creation on EDT
//
//
//
package com.knutejohnson.camera;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import java.util.*;
import java.util.regex.*;
import javax.swing.*;
import javax.media.*;
import javax.media.format.*;
import javax.media.protocol.*;
import javax.media.control.*;
import javax.media.util.*;
import javax.media.renderer.*;
import javax.imageio.*;
public class WebCam extends JFrame implements ActionListener, Runnable {
final static String VERSION = "0.65";
final static String ABOUT_MESSAGE =
"Knute's Web Cam - Version " + VERSION + "\n" +
"Copyright (c) 2003-2006 Knute Johnson. All rights reserved.";
final static String TITLE = "Knute's Web Cam";
final static String DATA_FILE = ".wc";
final static String[] extension = { ".jpg",".png",".bmp" };
final static String[] fileFormat = { "JPEG","PNG","BMP" };
String execute = "";
String fname = "photo";
int currentCamera = -1;
int fileType = 0;
int interval = 60;
volatile boolean automatic = false;
boolean showExecuteDialog;
String startTimeStr = "";
String stopTimeStr = "";
CaptureDeviceInfo[] deviceInfo;
ControllerListener cl;
Player player;
MediaLocator ml;
FrameGrabbingControl grabber;
FormatControl formatControl;
JRadioButtonMenuItem[] cameraMenuItem;
JRadioButtonMenuItem stopCaptureMenuItem;
JRadioButtonMenuItem[] fileTypeMenuItem;
JMenuItem formatMenuItem;
JMenuItem setIntervalMenuItem;
JRadioButtonMenuItem showExecuteDialogMenuItem;
IPanel ip;
JTextField startField;
JTextField stopField;
JButton grabButton;
JButton autoButton;
JLabel lastPhotoLabel;
ImageIcon grabIcon;
ImageIcon startIcon;
ImageIcon stopIcon;
Thread thread;
Container cp;
GridBagConstraints c;
public WebCam() {
super(TITLE);
getSettings();
Class thisClass = this.getClass();
grabIcon = new
ImageIcon(thisClass.getResource("wcimages/grab.png"));
startIcon = new
ImageIcon(thisClass.getResource("wcimages/start.png"));
stopIcon = new
ImageIcon(thisClass.getResource("wcimages/stop.png"));
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
if (player != null) {
player.stop();
player.close();
}
System.exit(0);
}
});
cp = getContentPane();
cp.setLayout(new GridBagLayout());
c = new GridBagConstraints();
c.gridx = c.gridy = 0; c.gridwidth = 1;
c.insets = new Insets(2,4,4,4);
c.fill = GridBagConstraints.HORIZONTAL;
JMenuBar mb = new JMenuBar();
setJMenuBar(mb);
JMenu fileMenu = new JMenu("File");
mb.add(fileMenu);
JMenu optionsMenu = new JMenu("Options");
mb.add(optionsMenu);
JMenu helpMenu = new JMenu("Help");
mb.add(helpMenu);
JMenuItem saveMenuItem = new JMenuItem("Save Settings");
saveMenuItem.addActionListener(this);
fileMenu.add(saveMenuItem);
JMenuItem execMenuItem = new JMenuItem("Execute After Grab");
execMenuItem.addActionListener(this);
fileMenu.add(execMenuItem);
formatMenuItem = new JMenuItem("Format Control");
formatMenuItem.setEnabled(false);
formatMenuItem.addActionListener(this);
fileMenu.add(formatMenuItem);
fileMenu.addSeparator();
JMenuItem quitMenuItem = new JMenuItem("Quit");
quitMenuItem.addActionListener(this);
fileMenu.add(quitMenuItem);
JMenu cameraMenu = new JMenu("Camera");
optionsMenu.add(cameraMenu);
JMenuItem filenameMenuItem = new JMenuItem("File Name");
filenameMenuItem.addActionListener(this);
optionsMenu.add(filenameMenuItem);
JMenu filetypeMenu = new JMenu("File Type");
optionsMenu.add(filetypeMenu);
fileTypeMenuItem = new JRadioButtonMenuItem[fileFormat.length];
ButtonGroup bg = new ButtonGroup();
for (int i=0; i<fileFormat.length; i++) {
fileTypeMenuItem
= new JRadioButtonMenuItem(fileFormat);
bg.add(fileTypeMenuItem);
fileTypeMenuItem.addActionListener(this);
filetypeMenu.add(fileTypeMenuItem);
}
fileTypeMenuItem[fileType].setSelected(true);
setIntervalMenuItem = new JMenuItem("Set Interval");
setIntervalMenuItem.setEnabled(!automatic);
setIntervalMenuItem.addActionListener(this);
optionsMenu.add(setIntervalMenuItem);
showExecuteDialogMenuItem =
new JRadioButtonMenuItem("Show Execute Dialog",showExecuteDialog);
showExecuteDialogMenuItem.addActionListener(this);
optionsMenu.add(showExecuteDialogMenuItem);
JMenuItem aboutMenuItem = new JMenuItem("About");
aboutMenuItem.addActionListener(this);
helpMenu.add(aboutMenuItem);
Vector deviceVector =
CaptureDeviceManager.getDeviceList(new RGBFormat());
deviceInfo =
new CaptureDeviceInfo[deviceVector.size()];
cameraMenuItem = new JRadioButtonMenuItem[deviceVector.size()];
bg = new ButtonGroup();
for (int i=0; i<deviceInfo.length; i++) {
deviceInfo = (CaptureDeviceInfo)deviceVector.get(i);
if (i == currentCamera)
cameraMenuItem =
new JRadioButtonMenuItem(deviceInfo.getName(),true);
else
cameraMenuItem =
new JRadioButtonMenuItem(deviceInfo.getName());
bg.add(cameraMenuItem);
cameraMenuItem.addActionListener(this);
cameraMenu.add(cameraMenuItem);
System.out.println(deviceInfo.getName());
}
stopCaptureMenuItem = new JRadioButtonMenuItem(
"Stop Capture",currentCamera == -1);
stopCaptureMenuItem.addActionListener(this);
bg.add(stopCaptureMenuItem);
cameraMenu.add(stopCaptureMenuItem);
c.gridheight = 6;
ip = new IPanel();
cp.add(ip,c);
c.gridx = 2; c.gridheight = 1;
c.anchor = GridBagConstraints.NORTH;
JLabel l = new JLabel("Start Time");
cp.add(l,c);
++c.gridx;
startField = new JTextField(startTimeStr);
cp.add(startField,c);
c.gridx = 2; ++c.gridy;
l = new JLabel("Stop Time");
cp.add(l,c);
++c.gridx;
stopField = new JTextField(stopTimeStr);
cp.add(stopField,c);
c.weighty = 0.3;
c.anchor = GridBagConstraints.SOUTH;
c.gridx = 2; ++c.gridy; c.gridwidth = 2;
grabButton = new JButton(grabIcon);
grabButton.setActionCommand("Grab");
grabButton.setFocusPainted(false);
grabButton.setEnabled(false);
grabButton.addActionListener(this);
cp.add(grabButton,c);
c.weighty = 0.7;
c.anchor = GridBagConstraints.NORTH;
++c.gridy;
autoButton = new JButton(automatic ? stopIcon : startIcon);
autoButton.setActionCommand(automatic ? "Stop Automatic" :
"Start Automatic");
autoButton.setFocusPainted(false);
autoButton.setEnabled(false);
autoButton.addActionListener(this);
cp.add(autoButton,c);
c.weighty = 0.0;
++c.gridy;
c.anchor = GridBagConstraints.SOUTH;
l = new JLabel("Last Photo Taken",JLabel.CENTER);
cp.add(l,c);
++c.gridy;
lastPhotoLabel = new JLabel(" ",JLabel.CENTER);
cp.add(lastPhotoLabel,c);
cl = new ControllerAdapter() {
public void realizeComplete(RealizeCompleteEvent rce) {
grabber = (FrameGrabbingControl)player.getControl(
"javax.media.control.FrameGrabbingControl");
RGBFormat rgbFormat = new RGBFormat(new Dimension(640,480),
921600,Format.byteArray,30f,24,3,2,1,3,1920,RGBFormat.TRUE,
RGBFormat.LITTLE_ENDIAN);
formatControl = (FormatControl)player.getControl(
"javax.media.control.FormatControl");
Format[] formats = formatControl.getSupportedFormats();
// for (int i=0; i<formats.length; i++)
// System.out.println(formats.toString());
if (formatControl != null) {
player.stop();
formatControl.setFormat(rgbFormat);
player.start();
formatMenuItem.setEnabled(true);
}
/*
for (int i=0; i<formats.length; i++) {
if (formats.matches(rgbFormat.relax())) {
formatControl.setFormat(formats);
break;
}
}
*/
System.out.println(formatControl.getFormat().toString());
}
public void formatChange(FormatChangeEvent fce) {
System.out.println(formatControl.getFormat());
}
public void start(StartEvent se) {
grabButton.setEnabled(true);
autoButton.setEnabled(true);
if (currentCamera != -1)
setTitle(TITLE + " - " +
deviceInfo[currentCamera].getName());
}
public void stop(StopEvent se) {
grabButton.setEnabled(false);
autoButton.setEnabled(false);
setTitle(TITLE);
}
public void controllerError(ControllerErrorEvent cee) {
stopCaptureMenuItem.setSelected(true);
formatMenuItem.setEnabled(false);
}
public void controllerClosed(ControllerClosedEvent cce) {
}
};
if (currentCamera >= 0 && currentCamera < deviceInfo.length) {
ml = deviceInfo[currentCamera].getLocator();
try {
Manager.setHint(Manager.PLUGIN_PLAYER,Boolean.TRUE);
player = Manager.createPlayer(ml);
player.addControllerListener(cl);
player.start();
} catch (Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(WebCam.this,
"Could Not Create
Player","ERROR",JOptionPane.ERROR_MESSAGE);
}
}
pack();
setVisible(true);
if (automatic) {
thread = new Thread(this);
thread.start();
}
}
public void run() {
// delay 2 secs when first started to not miss first photo from
stream
int countDown = 2;
try {
while (automatic) {
if (checkTimes()) {
setTitle(TITLE + " - Next Photo In " +
Integer.toString(countDown) + " Seconds");
if (countDown == 0) {
setTitle(TITLE + " - Taking Photo");
grab();
countDown = interval;
}
--countDown;
} else
setTitle(TITLE);
Thread.sleep(1000);
}
} catch (InterruptedException ie) {
}
if (currentCamera != -1)
setTitle(TITLE + " - " + deviceInfo[currentCamera].getName());
else
setTitle(TITLE);
}
boolean checkTimes() {
boolean retcod = true;
int startTime;
int stopTime;
int currentTime;
java.text.SimpleDateFormat sdf =
new java.text.SimpleDateFormat("HH:mm");
String currentTimeStr = sdf.format(new Date());
currentTime = Integer.parseInt(currentTimeStr.substring(0,2)) *
60 * 60;
currentTime += (Integer.parseInt(currentTimeStr.substring(3,5))
* 60);
Pattern p = Pattern.compile("(\\d{1,2})[:.]?(\\d{2})");
Matcher m = p.matcher(startField.getText());
if (m.matches()) {
startTime = Integer.parseInt(m.group(1)) * 60 * 60;
startTime += (Integer.parseInt(m.group(2)) * 60);
m = p.matcher(stopField.getText());
if (m.matches()) {
stopTime = Integer.parseInt(m.group(1)) * 60 * 60;
stopTime += (Integer.parseInt(m.group(2)) * 60);
if (stopTime > startTime) {
if (!(startTime <= currentTime && currentTime <
stopTime))
retcod = false;
} else {
if (!(currentTime >= startTime || currentTime <
stopTime))
retcod = false;
}
}
}
return retcod;
}
public void actionPerformed(ActionEvent ae) {
Object src = ae.getSource();
if (src instanceof JRadioButtonMenuItem) {
if (src == stopCaptureMenuItem) {
if (player != null) {
player.stop();
player.close();
}
currentCamera = -1;
if (automatic) {
setIntervalMenuItem.setEnabled(true);
autoButton.setIcon(startIcon);
autoButton.setActionCommand("Start Automatic");
thread.interrupt();
automatic = false;
}
formatMenuItem.setEnabled(false);
return;
}
for (int i=0; i<cameraMenuItem.length; i++) {
if (src == cameraMenuItem) {
currentCamera = i;
grabButton.setEnabled(false);
autoButton.setEnabled(false);
Runnable r = new Runnable() {
public void run() {
if (player != null) {
player.stop();
player.close();
}
ml = deviceInfo[currentCamera].getLocator();
try {
Manager.setHint(Manager.PLUGIN_PLAYER,Boolean.TRUE);
player = Manager.createPlayer(ml);
player.addControllerListener(cl);
player.start();
} catch (Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(WebCam.this,
"Could Not Create Player","ERROR",
JOptionPane.ERROR_MESSAGE);
}
}
};
new Thread(r).start();
return;
}
}
if (src == showExecuteDialogMenuItem) {
if (showExecuteDialogMenuItem.isSelected())
showExecuteDialog = true;
else
showExecuteDialog = false;
}
}
String ac = ae.getActionCommand();
for (int i=0; i<fileFormat.length; i++)
if (ac.equals(fileFormat)) {
fileType = i;
break;
}
if (ac.equals("Save Settings")) {
saveSettings();
} else if (ac.equals("Execute After Grab")) {
String newExecute = JOptionPane.showInputDialog(WebCam.this,
"Enter Command To Execute After Grab",execute);
if (newExecute != null)
execute = newExecute;
} else if (ac.equals("Format Control")) {
Component co = formatControl.getControlComponent();
if (co != null) {
player.stop();
JDialog d = new JDialog(WebCam.this,"Format Control",true);
d.add(co);
d.pack();
d.setLocationRelativeTo(WebCam.this);
d.setVisible(true);
d.dispose();
player.start();
}
} else if (ac.equals("File Name")) {
String newFname = JOptionPane.showInputDialog(WebCam.this,
"Enter File Name",fname);
if (newFname != null)
fname = newFname;
} else if (ac.equals("Set Interval")) {
String newInterval = JOptionPane.showInputDialog(WebCam.this,
"Enter Interval In Seconds",Integer.toString(interval));
if (newInterval != null) {
try {
interval = Integer.parseInt(newInterval);
} catch (NumberFormatException nfe) { }
}
} else if (ac.equals("Grab")) {
grab();
} else if (ac.equals("Start Automatic")) {
setIntervalMenuItem.setEnabled(false);
autoButton.setIcon(stopIcon);
autoButton.setActionCommand("Stop Automatic");
automatic = true;
thread = new Thread(WebCam.this);
thread.start();
} else if (ac.equals("Stop Automatic")) {
setIntervalMenuItem.setEnabled(true);
autoButton.setIcon(startIcon);
autoButton.setActionCommand("Start Automatic");
thread.interrupt();
automatic = false;
} else if (ac.equals("About")) {
JOptionPane.showMessageDialog(WebCam.this,ABOUT_MESSAGE);
} else if (ac.equals("Quit")) {
if (player != null) {
player.stop();
player.close();
}
System.exit(0);
}
}
public void grab() {
Buffer buf = grabber.grabFrame();
BufferToImage b2i = new
BufferToImage((VideoFormat)buf.getFormat());
BufferedImage bi = (BufferedImage)b2i.createImage(buf);
if (bi != null) {
ip.setImage(bi);
java.text.SimpleDateFormat sdf =
new java.text.SimpleDateFormat("HH:mm:ss");
lastPhotoLabel.setText(sdf.format(new Date()));
try {
ImageIO.write(bi,fileFormat[fileType],
new File(fname+extension[fileType]));
bi.flush();
} catch (IllegalArgumentException iae) {
iae.printStackTrace();
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
if (!execute.equals("")) {
Runnable r = new Runnable() {
public void run() {
JDialog d = null;
try {
if (showExecuteDialog) {
d = new JDialog(WebCam.this,
"Excecute After Grab");
d.setLocationRelativeTo(WebCam.this);
final JTextArea ta = new JTextArea("",10,30);
JScrollPane s = new JScrollPane(ta,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
d.getContentPane().add(s);
d.pack();
d.setVisible(true);
ProcessBuilder pb = new
ProcessBuilder(execute);
pb.redirectErrorStream(true);
final Process p = pb.start();
Runnable r = new Runnable() {
public void run() {
BufferedReader br = new BufferedReader(
new
InputStreamReader(p.getInputStream()));
String str;
try {
while ((str = br.readLine()) !=
null) {
ta.append(str + "\n");
ta.setCaretPosition(
ta.getText().length());
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
};
new Thread(r).start();
p.waitFor();
Thread.sleep(4000);
d.dispose();
} else {
ProcessBuilder pb = new
ProcessBuilder(execute);
pb.redirectErrorStream(true);
final Process p = pb.start();
Runnable r = new Runnable() {
public void run() {
BufferedReader br = new BufferedReader(
new
InputStreamReader(p.getInputStream()));
String str;
try {
while ((str = br.readLine()) !=
null)
System.out.println(str);
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
};
new Thread(r).start();
p.waitFor();
}
} catch (IOException ioe) {
ioe.printStackTrace();
} catch (InterruptedException ie) {
ie.printStackTrace();
} finally {
if (d != null && d.isVisible()) {
d.setVisible(false);
d.dispose();
}
}
}
};
new Thread(r).start();
}
}
public void saveSettings() {
try {
BufferedWriter bw =
new BufferedWriter(new FileWriter(new File(DATA_FILE)));
bw.write(Integer.toString(currentCamera));
bw.newLine();
bw.write(fname);
bw.newLine();
bw.write(Integer.toString(fileType));
bw.newLine();
bw.write(Integer.toString(interval));
bw.newLine();
bw.write(Boolean.toString(automatic));
bw.newLine();
bw.write(execute);
bw.newLine();
bw.write(Boolean.toString(showExecuteDialog));
bw.newLine();
bw.write(startField.getText());
bw.newLine();
bw.write(stopField.getText());
bw.newLine();
bw.close();
} catch (IOException ioe) {
System.out.println(ioe);
}
}
public void getSettings() {
try {
File f = new File(DATA_FILE);
if (f.exists()) {
BufferedReader br =
new BufferedReader(new FileReader(f));
currentCamera = Integer.parseInt(br.readLine());
fname = br.readLine();
fileType = Integer.parseInt(br.readLine());
interval = Integer.parseInt(br.readLine());
automatic = Boolean.parseBoolean(br.readLine());
execute = br.readLine();
showExecuteDialog = Boolean.parseBoolean(br.readLine());
startTimeStr = br.readLine();
stopTimeStr = br.readLine();
br.close();
}
} catch (IOException ioe) {
System.out.println(ioe);
}
}
public static void main(String[] args) {
Runnable r = new Runnable() {
public void run() {
new WebCam();
}
};
EventQueue.invokeLater(r);
}
public class IPanel extends JPanel {
Image image;
public IPanel() {
}
public void setImage(Image image) {
this.image = image;
repaint();
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (image != null)
g.drawImage(image,0,0,320,240,this);
else
g.drawString("No Image Available",40,120);
}
public Dimension getPreferredSize() {
return new Dimension(320,240);
}
}
}