JAVA 中 如何从USB摄像头获得视频输入(来者有分..不够再加..)
说说思路..有源码的帖出来看看..
有这方面的源码程序..共享一下..
联系EMAIL :luck_529@163.com
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我见过有人做过，
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接分
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没接触过，只能顶下
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mask
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UP
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应该要调用windows中的一些函数吧。
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用 JMF 估计可以。
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//利用这三个类分别获取摄像头驱动，和获取摄像头内的图像流，获取到的图像流是一个Swing的Component组件类
public static Player player = null;
private CaptureDeviceInfo di = null;
private MediaLocator ml = null;
//文档中提供的驱动写法，为何这么写我也不知：）
String str1 = "vfw:Logitech USB Video Camera:0 ";
String str2 = "vfw:Microsoft WDM Image Capture (Win32):0 ";
di = CaptureDeviceManager.getDevice(str2);
ml = di.getLocator();
try
{
player = Manager.createRealizedPlayer(ml);
player.start();
Component comp;
if ((comp = player.getVisualComponent()) != null)
{
add(comp, BorderLayout.NORTH);
}
}
catch (Exception e)
{
e.printStackTrace();
}
下面是获取图像
private JButton capture;
private Buffer buf = null;
private BufferToImage btoi = null;
private ImagePanel imgpanel = null;
private Image img = null;
private ImagePanel imgpanel = null;
JComponent c = (JComponent) e.getSource();
if (c == capture)//如果按下的是拍照按钮
{
FrameGrabbingControl fgc =(FrameGrabbingControl) player.getControl( "javax.media.control.FrameGrabbingControl ");
buf = fgc.grabFrame(); // 获取当前祯并存入Buffer类
btoi = new BufferToImage((VideoFormat) buf.getFormat());
img = btoi.createImage(buf); // show the image
imgpanel.setImage(img);
}
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upppppppppppppppppppppppppppppppppp
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接分
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up
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mark!
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学习学习
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楼主有想法!有前途!
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JMF可以的
package jmfsample;
import javax.media.*;
import javax.media.protocol.*;
import javax.media.control.*;
import javax.media.format.*;
import java.awt.*;
import com.sun.media.controls.VFlowLayout; // Lays components one below the other
import java.awt.event.*;
import java.util.*;
public class JVidCap extends Frame implements ItemListener, ActionListener {
// GUI components
Panel jPanel1 = new Panel();
Choice comboFileType = new Choice();
VFlowLayout verticalFlowLayout1 = new VFlowLayout();
Label jLabel1 = new Label();
Checkbox checkVideo = new Checkbox();
Choice comboEncoding = new Choice();
Choice comboSize = new Choice();
Checkbox checkAudio = new Checkbox();
Choice comboSampling = new Choice();
Checkbox radio16bit;
Checkbox radio8bit;
Panel jPanel2 = new Panel();
Panel jPanel3 = new Panel();
Checkbox radioMono = new Checkbox();
Checkbox radioStereo = new Checkbox();
Button buttonStart = new Button();
Button buttonExit = new Button();
Button buttonEnd = new Button();
Panel panel1 = new Panel();
GridLayout gridLayout1 = new GridLayout();
GridLayout gridLayout2 = new GridLayout();
// JMF objects
Processor processor = null;
DataSink datasink = null;
Component monitor = null;
DataSource datasource = null;
String outputType = "video.quicktime ";
public JVidCap() {
createGUI();
fillGUI();
}
private void startMonitoring() {
// Close the previous processor, which in turn closes the capture device
if (processor != null) {
processor.stop();
processor.close();
}
// Remove the previous monitor
if (monitor != null) {
panel1.remove(monitor);
monitor = null;
}
AudioFormat af = null;
VideoFormat vf = null;
if (checkAudio.getState()) {
// Need audio
int samplingRate = Integer.parseInt(comboSampling.getSelectedItem());
int samplingSize = radio8bit.getState() ? 8:16;
int channels = radioMono.getState()? 1:2;
af = new AudioFormat(AudioFormat.LINEAR, samplingRate, samplingSize,
channels);
}
if (checkVideo.getState()) {
String encoding = comboEncoding.getSelectedItem();
String strSize = comboSize.getSelectedItem();
StringTokenizer st = new StringTokenizer(strSize, "x ");
int sizeX = Integer.parseInt(st.nextToken());
int sizeY = Integer.parseInt(st.nextToken());
Dimension size = new Dimension(sizeX, sizeY);
vf = new VideoFormat(encoding, size, Format.NOT_SPECIFIED,
null, 15f);
}
// Use CaptureUtil to create a monitored capture datasource
datasource = CaptureUtil.getCaptureDS(vf, af);
if (datasource != null) {
// Set the preferred content type for the Processor 's output
outputType = "video.quicktime ";
if (comboFileType.getSelectedItem().equals( "AVI "))
outputType = "video.x_msvideo ";
FileTypeDescriptor ftd = new FileTypeDescriptor(outputType);
Format [] formats = null;
if (af != null && vf != null) {
formats = new Format[] { new AudioFormat(null),
new VideoFormat(null) };
}
if (af == null)
formats = new Format[] {new VideoFormat(null)};
ProcessorModel pm = new ProcessorModel(datasource, formats, ftd);
try {
processor = Manager.createRealizedProcessor(pm);
} catch (Exception me) {
System.err.println(me);
// Make sure the capture devices are released
datasource.disconnect();
return;
}
// Get the monitor control:
// Since there are more than one MonitorControl objects
// exported by the DataSource, we get the specific one
// that is also the MonitorStream object.
MonitorControl mc = (MonitorControl)datasource.getControl( "jmfsample.MonitorStream ");
if (mc != null) {
monitor = mc.getControlComponent();
panel1.add(monitor);
// Make sure the monitor is enabled
mc.setEnabled(true);
pack();
}
}
}
private void startCapture() {
enableComponents(false);
buttonStart.setLabel( "Pause ");
buttonEnd.setEnabled(true);
// Get the processor 's output, create a DataSink and connect the two.
DataSource outputDS = processor.getDataOutput();
try {
MediaLocator ml = new MediaLocator( "file:capture. " +
(outputType.equals( "video.x_msvideo ")? "avi " : "mov "));
datasink = Manager.createDataSink(outputDS, ml);
datasink.open();
datasink.start();
} catch (Exception e) {
System.err.println(e);
}
processor.start();
System.out.println( "Started saving... ");
}
private void pauseCapture() {
processor.stop();
buttonStart.setLabel( "Resume ");
}
private void resumeCapture() {
processor.start();
buttonStart.setLabel( "Pause ");
}
private void stopCapture() {
// Stop the capture and the file writer (DataSink)
processor.stop();
processor.close();
datasink.close();
processor = null;
buttonEnd.setEnabled(false);
// Restart monitoring
startMonitoring();
buttonStart.setLabel( "Start ");
enableComponents(true);
System.out.println( "Done saving. ");
}
private void enableComponents(boolean state) {
comboFileType.setEnabled(state);
comboEncoding.setEnabled(state);
comboSize.setEnabled(state);
checkAudio.setEnabled(state);
comboSampling.setEnabled(state);
radioMono.setEnabled(state);
radioStereo.setEnabled(state);
radio8bit.setEnabled(state);
radio16bit.setEnabled(state);
buttonExit.setEnabled(state);
}
void exit() {
if (processor != null)
processor.close();
System.exit(0);
}
private void fillGUI() {
comboFileType.add( "QuickTime ");
comboFileType.add( "AVI ");
comboEncoding.add( "RGB "); // Add YUV, etc.
// Assume these sizes are available - might need modification
// for certain capture cards / cameras.
comboSize.add( "160x120 ");
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comboSize.add( "320x240 ");
comboSize.add( "640x480 "); // Add more sizes if your card supports
// Or detect them by getting a format list from the capture device info.
// Assume these capture rates are available on sound card
comboSampling.add( "44100 ");
comboSampling.add( "22050 ");
comboSampling.add( "8000 ");
// Initialize listeners
checkAudio.addItemListener(this);
comboSize.addItemListener(this);
comboEncoding.addItemListener(this);
comboSampling.addItemListener(this);
comboFileType.addItemListener(this);
radioStereo.addItemListener(this);
radioMono.addItemListener(this);
radio8bit.addItemListener(this);
radio16bit.addItemListener(this);
buttonStart.addActionListener(this);
buttonEnd.addActionListener(this);
// Create the datasource and processor
startMonitoring();
}
public void itemStateChanged(ItemEvent sce) {
Object source = sce.getSource();
boolean enabled = checkAudio.getState();
radioStereo.setEnabled(enabled);
radioMono.setEnabled(enabled);
radio8bit.setEnabled(enabled);
radio16bit.setEnabled(enabled);
comboSampling.setEnabled(enabled);
if (source == comboSize || source == comboEncoding || source == comboSampling ||
source == radio16bit || source == radio8bit || source == radioMono ||
source == radioStereo || source == comboFileType) {
startMonitoring();
}
}
public void actionPerformed(ActionEvent ae) {
String action = ae.getActionCommand();
if (action.equals( "Start ")) {
startCapture();
} else if (action.equals( "Pause ")) {
pauseCapture();
} else if (action.equals( "Resume ")) {
resumeCapture();
} else if (action.equals( "End ")) {
stopCapture();
} else if (action.equals( "Exit ")) {
exit();
}
}
private void createGUI() {
this.setTitle( "JVidCap ");
CheckboxGroup group1 = new CheckboxGroup();
CheckboxGroup group2 = new CheckboxGroup();
jPanel1.setLayout(verticalFlowLayout1);
jLabel1.setText( "File Format ");
checkVideo.setState(true);
checkVideo.setEnabled(false);
checkVideo.setLabel( "Video ");
checkAudio.setState(true);
checkAudio.setLabel( "Audio ");
radio16bit = new Checkbox( "16-Bit ", group1, true);
radio8bit = new Checkbox( "8-Bit ", group1, false);
jPanel2.setLayout(gridLayout2);
radioMono = new Checkbox( "Mono ", group2, false);
radioStereo = new Checkbox( "Stereo ", group2, true);
jPanel3.setLayout(gridLayout1);
buttonStart.setLabel( "Start ");
buttonExit.setLabel( "Exit ");
buttonExit.addActionListener(this);
buttonEnd.setEnabled(false);
buttonEnd.setLabel( "End ");
this.add(jPanel1, BorderLayout.WEST);
jPanel1.add(jLabel1);
jPanel1.add(comboFileType);
jPanel1.add(checkVideo);
jPanel1.add(comboEncoding);
jPanel1.add(comboSize);
jPanel1.add(checkAudio);
jPanel1.add(comboSampling);
jPanel1.add(jPanel3);
jPanel3.add(radioMono, null);
jPanel3.add(radioStereo, null);
jPanel1.add(jPanel2);
jPanel2.add(radio8bit, null);
jPanel2.add(radio16bit, null);
jPanel1.add(buttonStart);
jPanel1.add(buttonEnd);
jPanel1.add(buttonExit);
this.add(panel1, BorderLayout.CENTER);
}
public static void main(String[] args) {
JVidCap JVidCap1 = new JVidCap();
JVidCap1.setVisible(true);
JVidCap1.pack();
}
}
