1    // Glenn Josefiak 
2    // Fairfield University 
3    // SW513 
4    // Spring 2003 
5     
6    package j2d.gui; 
7     
8    // Reference: 
9    // http://java.sun.com/products/java-media/jmf/2.1.1/solutions/JVidCap.html 
10    
11   import javax.media.*; 
12   import javax.media.control.FormatControl; 
13   import javax.media.format.VideoFormat; 
14   import javax.media.format.YUVFormat; 
15   import javax.media.protocol.CaptureDevice; 
16   import javax.media.protocol.PushBufferDataSource; 
17   import javax.swing.*; 
18   import java.awt.*; 
19   import java.awt.event.ActionEvent; 
20   import java.awt.event.ActionListener; 
21   import java.util.Vector; 
22    
23   /** 
24    * Dialog box that enables selection of camera and 
25    * video format from those cameras installed on the 
26    * system.  Requires JMF to be installed. 
27    */ 
28   public class CameraConfigToolbox extends JInternalFrame { 
29       JComboBox cboCameraSelect; 
30       JComboBox cboFormatSelect; 
31       JButton btnApply; 
32    
33       Vector YUVdevices; 
34       Format[] formats; 
35    
36       /** 
37        * Create a new CameraConfigToolbox 
38        */ 
39       public CameraConfigToolbox() { 
40    
41           Container c = getContentPane(); 
42           c.setLayout(new FlowLayout(FlowLayout.LEFT)); 
43    
44           setTitle("Camera Configuration"); 
45    
46           cboCameraSelect = new JComboBox(new Vector()); 
47           c.add(cboCameraSelect); 
48           cboCameraSelect.addActionListener(new ActionListener() { 
49               public void actionPerformed(ActionEvent e) { 
50                   initFormatList(); 
51               } 
52           }); 
53    
54           cboFormatSelect = new JComboBox(new Vector()); 
55           c.add(cboFormatSelect); 
56    
57           btnApply = new JButton("Apply"); 
58           c.add(btnApply); 
59    
60           setMinimumSize(new Dimension(100, 100)); 
61           setClosable(true); 
62           setMaximizable(true); 
63           setResizable(true); 
64    
65           initCameraList(); 
66       } 
67    
68       /** 
69        * Populate the camera list combo box. 
70        */ 
71       private void initCameraList() { 
72           YUVdevices = CaptureDeviceManager.getDeviceList(new YUVFormat()); 
73           for (int i = 0; i < YUVdevices.size(); i++) { 
74               cboCameraSelect.addItem(((CaptureDeviceInfo) YUVdevices.elementAt(i)).getName()); 
75           } 
76       } 
77    
78       /** 
79        * Populate the format list combo box. 
80        */ 
81       private void initFormatList() { 
82    
83           try { 
84               CaptureDeviceInfo cdi = 
85                       (CaptureDeviceInfo) 
86                       YUVdevices.elementAt(cboCameraSelect.getSelectedIndex()); 
87               MediaLocator ml = cdi.getLocator(); 
88    
89               PushBufferDataSource pbds = 
90                       (PushBufferDataSource) Manager.createDataSource(ml); 
91               pbds.connect(); 
92    
93               FormatControl[] fcs = ((CaptureDevice) pbds).getFormatControls(); 
94               if (fcs.length < 1) 
95                   return; 
96    
97               FormatControl fc = fcs[0]; 
98               formats = fc.getSupportedFormats(); 
99    
100              cboFormatSelect.removeAllItems(); 
101              for (int i = 0; i < formats.length; i++) { 
102                  String desc; 
103                  VideoFormat vf = (VideoFormat) formats[i]; 
104   
105                  desc = vf.getEncoding() + "; "; 
106                  desc += vf.getSize().getWidth() + "x" 
107                          + vf.getSize().getHeight(); 
108   
109                  cboFormatSelect.addItem(desc); 
110              } 
111              pbds.disconnect(); 
112          } catch (Exception e) { 
113              // do nothing 
114          } 
115      } 
116   
117      /** 
118       * Return the selected video format. 
119       */ 
120      public VideoFormat getSelectedFormat() { 
121          return (VideoFormat) formats[cboFormatSelect.getSelectedIndex()]; 
122      } 
123   
124   
125   
126      /** 
127       * Return a handle to the Apply button on the frame. 
128       */ 
129      public JButton getButton() { 
130          return btnApply; 
131      } 
132  }