java实现摄像头调用，处理视频流
package com.xuggler;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
import javax.swing.Icon;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import java.awt.Frame;
import java.awt.BorderLayout;
import javax.swing.JDialog;
import javax.swing.JButton;
import com.xuggle.xuggler.ICodec;
import com.xuggle.xuggler.IContainer;
import com.xuggle.xuggler.IContainerFormat;
import com.xuggle.xuggler.IError;
import com.xuggle.xuggler.IMetaData;
import com.xuggle.xuggler.IPacket;
import com.xuggle.xuggler.IPixelFormat;
import com.xuggle.xuggler.IStream;
import com.xuggle.xuggler.IStreamCoder;
import com.xuggle.xuggler.IVideoPicture;
import com.xuggle.xuggler.IVideoResampler;
import com.xuggle.xuggler.Utils;
import java.awt.Color;
import java.awt.Component;
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import javax.swing.JTextField;
public class WebCamDialog extends JDialog {
private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private static WebCamDialog instance = null;
public static WebCamDialog getInstance() {
if (instance == null) {
instance = new WebCamDialog(null);
instance.setModal(true);
instance.setLocationRelativeTo(null);
}
return instance;
}
private void doPackDialog() {
if (FORMAT_BIG.equals(usingFormat)) {
getPanelCenter().setPreferredSize(new Dimension(1280, 1024));
} else {
getPanelCenter().setPreferredSize(new Dimension(800, 600));
}
pack();
this.setLocationRelativeTo(null);
}
/**
* @param owner
*/
private WebCamDialog(Frame owner) {
super(owner);
initialize();
}
/**
* This method initializes this
*
* @return void
*/
private void initialize() {
this.setContentPane(getJContentPane());
this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
this.setSize(new Dimension(521, 239));
this.setTitle("webcamdialog");
}
@Override
public void dispose() {
super.dispose();
}
/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(new BorderLayout());
jContentPane.add(getPanelEast(), BorderLayout.EAST);
jContentPane.add(getPanelCenter(), BorderLayout.CENTER);
}
return jContentPane;
}
private File recentCaptureFile = null;
private JPanel panelEast = null;
private JButton jButtonCaptureAndReturn = null;
private JButton jButtonExit = null;
private JPanel panelCenter = null;
private JButton jButtonCapture = null;
private JButton jButtonOpenFolder = null;
private BufferedImage javaImage = null;
private Thread th = null; // @jve:decl-index=0:
public File init() {
doOpen();
this.setVisible(true);
return recentCaptureFile;
}
private void doOpen() {
doClose = false;
if (th != null && th.isAlive() && container != null && container.isOpened()) {
} else {
th = getNewThread();
th.start();
}
}
private String deviceName = "0"; // @jve:decl-index=0:
private String driverName = "vfwcap";
private IContainerFormat format = null;
private IMetaData params = null;
private IContainer container = null;
private int videoStreamId = -1;
private IStreamCoder videoCoder = null;
private IVideoResampler resampler = null;
private boolean doClose = false;
private boolean onMovie = false;// 开始抓数据
private static final String FORMAT_NORMAL = "800x600"; // @jve:decl-index=0:
private static final String FORMAT_BIG = "1280x1024"; // @jve:decl-index=0:
private String usingFormat = FORMAT_NORMAL; // @jve:decl-index=0:
public static int ask(String title, Object info, Object[] options, Object initOption,
Component basement) {
return showOptionDialog(basement, info, title, JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE, null, options, initOption);
}
private static int showOptionDialog(Component parentComponent, Object message, String title,
int optionType, int messageType, Icon icon, Object[] options, Object initialValue) {
return JOptionPane.showOptionDialog(parentComponent, message, title, optionType,
messageType, icon, options, initialValue);
}
private Thread getNewThread() {
// 选择分辨率
int rtn = ask("视频分辨率", "请选择要使用的视频分辨率，若您的计算机性能一般或无特殊需求，请选择普通分辨率。", new String[] {
"普通分辨率800x600", "高清分辨率1280x1024" }, "普通分辨率800x600", this);
if (rtn == 0) {
usingFormat = FORMAT_NORMAL;
} else {
usingFormat = FORMAT_BIG;
}
pack();
this.setLocationRelativeTo(null);
return new Thread(new Runnable() {
@SuppressWarnings("deprecation")
@Override
public void run() {
onMovie = false;
doInfo(false, "开始连接到摄像头硬件...");
// Let's make sure that we can actually convert video pixel
// formats.
if (!IVideoResampler
.isSupported(IVideoResampler.Feature.FEATURE_COLORSPACECONVERSION))
throw new RuntimeException(
"you must install the GPL version of Xuggler (with IVideoResampler support) for this demo to work");
// Tell Xuggler about the device format
format = IContainerFormat.make();
if (format.setInputFormat(driverName) < 0) {
doInfo(true, "无法连接到摄像头驱动...");
throw new IllegalArgumentException("couldn't open webcam device: " + driverName);
}
// devices, unlike most files, need to have parameters set in
// order for Xuggler to know how to configure them, for a
// webcam, these parameters make sense
params = IMetaData.make();
params.setValue("framerate", "30/1");
params.setValue("video_size", "320x240");
//params.setValue("framerate", "20/1");
//params.setValue("video_size", usingFormat);// 800x600 1280x1024
// Create a Xuggler container object
container = IContainer.make();
// Open up the container
int retval = container.open(deviceName, IContainer.Type.READ, format, false, true,params, null);
//int retval = container.open("G:\\eclicps_workspace\\XugglerDemo\\01.wmv", IContainer.Type.READ, null);
//System.out.println(retval);
if (retval < 0) {
// This little trick converts the non
// friendly integer return value into
// a slightly more friendly object
// to get a human-readable error name
IError error = IError.make(retval);
doInfo(true, "无法打开摄像头设备...");
throw new IllegalArgumentException("could not open file: " + deviceName
+ "; Error: " + error.getDescription());
}
// query how many streams the call to open found
int numStreams = container.getNumStreams();
// and iterate through the streams to find the first video
// stream
videoStreamId = -1;
videoCoder = null;
for (int i = 0; i < numStreams; i++) {
// Find the stream object
IStream stream = container.getStream(i);
// Get the pre-configured decoder that can decode this
// stream;
IStreamCoder coder = stream.getStreamCoder();
if (coder.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO) {
videoStreamId = i;
videoCoder = coder;
break;
}
}
if (videoStreamId == -1) {
doInfo(true, "找不到摄像头数据流...");
throw new RuntimeException("could not find video stream in container: "
+ deviceName);
}
/*
* Now we have found the video stream in this file. Let's open
* up our decoder so it can do work.
*/
if (videoCoder.open() < 0) {
doInfo(true, "无法打开视频解码器...");
throw new RuntimeException("could not open video decoder for container: "
+ deviceName);
}
resampler = null;
if (videoCoder.getPixelType() != IPixelFormat.Type.BGR24) {
// if this stream is not in BGR24, we're going to need to
// convert it. The VideoResampler does that for us.
resampler = IVideoResampler.make(videoCoder.getWidth(), videoCoder.getHeight(),
IPixelFormat.Type.BGR24, videoCoder.getWidth(), videoCoder.getHeight(),
videoCoder.getPixelType());
if (resampler == null) {
doInfo(true, "无法生成色彩空间取样器...");
throw new RuntimeException("could not create color space resampler for: "
+ deviceName);
}
}
// Now, we start walking through the container looking at each
// packet.
IPacket packet = IPacket.make();
//doInfo(true, deviceName);
doInfo(false, "开始显示视频分辨率为" + usingFormat + "...");
doPackDialog();
onMovie = true;
all: while (container.readNextPacket(packet) >= 0) {
// Now we have a packet, let's see if it belongs to our
// video stream
if (packet.getStreamIndex() == videoStreamId) {
// We allocate a new picture to get the data out of
// Xuggler
IVideoPicture picture = IVideoPicture.make(videoCoder.getPixelType(),
videoCoder.getWidth(), videoCoder.getHeight());
int offset = 0;
while (offset < packet.getSize()) {
// Now, we decode the video, checking for any
// errors.
int bytesDecoded = videoCoder.decodeVideo(picture, packet, offset);
if (bytesDecoded < 0) {
doInfo(true, "视频解码错误...");
onMovie = false;
throw new RuntimeException("got error decoding video in: "
+ deviceName);
}
offset += bytesDecoded;
// Some decoders will consume data in a packet, but
// will not be able to construct a full video
// picture yet. Therefore you should always check if
// you got a complete picture from the decoder
if (picture.isComplete()) {
IVideoPicture newPic = picture;
// If the resampler is not null, that means we
// didn't get the video in BGR24 format and need
// to convert it into BGR24 format.
if (resampler != null) {
// we must resample
newPic = IVideoPicture.make(resampler.getOutputPixelFormat(),
picture.getWidth(), picture.getHeight());
if (resampler.resample(newPic, picture) < 0) {
doInfo(true, "视频重取样错误...");
onMovie = false;
throw new RuntimeException(
"could not resample video from: " + deviceName);
}
}
if (newPic.getPixelType() != IPixelFormat.Type.BGR24) {
doInfo(true, "无法解码BGR24数据...");
onMovie = false;
throw new RuntimeException(
"could not decode video as BGR 24 bit data in: "
+ deviceName);
}
// Convert the BGR24 to an Java buffered image
javaImage = Utils.videoPictureToImage(newPic);
// and display it on the Java Swing window
if (!updateJavaWindow(javaImage)) {
// break all;
}
if (doClose) {// 退出
doClose = false;
break all;
}
}
}
} else {
// This packet isn't part of our video stream, so we
// just silently drop it.
do {
} while (false);
}
}
onMovie = false;
doInfo(false, "开始关闭摄像头...");
/*
* Technically since we're exiting anyway, these will be cleaned
* up by the garbage collector... but because we're nice people
* and want to be invited places for Christmas, we're going to
* show how to clean up.
*/
if (videoCoder != null) {
videoCoder.close();
videoCoder = null;
}
if (container != null) {
container.close();
container = null;
}
doInfo(false, "摄像头关闭完成...");
}
});
}
private boolean updateJavaWindow(BufferedImage javaImage) {
if (getPanelCenter() == null || getPanelCenter().getGraphics() == null) {
return false;
}
return getPanelCenter().getGraphics().drawImage(javaImage, 0, 0, null);
}
/**
* This method initializes panelEast
*
* @return javax.swing.JPanel
*/
private JPanel getPanelEast() {
if (panelEast == null) {
GridLayout gridLayout = new GridLayout();
gridLayout.setRows(6);
panelEast = new JPanel();
panelEast.setLayout(gridLayout);
panelEast.add(getJButtonCaptureAndReturn(), null);
panelEast.add(getJButtonCapture(), null);
panelEast.add(getJButtonOpenFolder(), null);
panelEast.add(getJButtonExit(), null);
panelEast.add(getJButton(), null);
panelEast.add(getJtfInfo(), null);
}
return panelEast;
}
/**
* This method initializes jButtonCaptureAndReturn
*
* @return javax.swing.JButton
*/
private JButton getJButtonCaptureAndReturn() {
if (jButtonCaptureAndReturn == null) {
jButtonCaptureAndReturn = new JButton("webcam_captureandreturn");
jButtonCaptureAndReturn.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
recentCaptureFile = doCaptureFile();
if (recentCaptureFile != null) {
dispose();
}
}
});
}
return jButtonCaptureAndReturn;
}
/**
* This method initializes jButtonExit
*
* @return javax.swing.JButton
*/
private JButton getJButtonExit() {
if (jButtonExit == null) {
jButtonExit = new JButton("exit");
jButtonExit.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
recentCaptureFile = null;
dispose();
}
});
}
return jButtonExit;
}
/**
* This method initializes panelCenter
*
* @return javax.swing.JPanel
*/
private JPanel getPanelCenter() {
if (panelCenter == null) {
panelCenter = new JPanel();
panelCenter.setLayout(new BorderLayout());
}
return panelCenter;
}
/**
* This method initializes jButtonCapture
*
* @return javax.swing.JButton
*/
private JButton getJButtonCapture() {
if (jButtonCapture == null) {
jButtonCapture = new JButton("webcam_capture");
jButtonCapture.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
recentCaptureFile = doCaptureFile();
}
});
}
return jButtonCapture;
}
/**
* 抓图且存为自动的时间文件名
*
* @return
*/
private File doCaptureFile() {
if (javaImage == null) {
return null;
}
File rtn = doGetCurrentFile();
if (rtn.exists()) {
return null;
}
BufferedImage bi = javaImage;
Iterator writers = ImageIO.getImageWritersByFormatName("jpg");
ImageWriter writer = (ImageWriter) writers.next();
try {
ImageOutputStream ios = ImageIO.createImageOutputStream(rtn);
writer.setOutput(ios);
writer.write(bi);
ios.close();
} catch (java.io.IOException io) {
System.out.println("IOException");
}
return rtn;
}
/**
* 20120221 按时间生成文件名
*
* @return
*/
private File doGetCurrentFile() {
String now = String.valueOf(System.currentTimeMillis());
File rtn = new File("c:\\" + now + ".jpg");
int loop = 0;
while (rtn.exists()) {
rtn = new File("c:\\" + now + ('A' + loop) + ".jpg");
loop++;
}
return rtn;
}
/**
* This method initializes jButtonOpenFolder
*
* @return javax.swing.JButton
*/
private JButton getJButtonOpenFolder() {
if (jButtonOpenFolder == null) {
jButtonOpenFolder = new JButton("webcam_openfolder");
jButtonOpenFolder.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
try {
Desktop.getDesktop().open(new File("c:\\"));
} catch (IOException e1) {
e1.printStackTrace();
}
}
});
}
return jButtonOpenFolder;
}
private JButton jButton = null;
private JTextField jtfInfo = null;
/**
* This method initializes jButton
*
* @return javax.swing.JButton
*/
private JButton getJButton() {
if (jButton == null) {
jButton = new JButton("resetwebcam");
jButton.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
if (onMovie == true) {
doClose = true;
th = null;
// 20120829 等待关闭完成
while (container.isOpened()) {
}
// 20120830 且重新打开
doOpen();
} else {
error(null, "errnoresponsefromwebcam", null);
}
}
});
}
return jButton;
}
public boolean error(String title, Object info, Component basement) {
return showOptionDialog(basement, info, title, JOptionPane.DEFAULT_OPTION,
JOptionPane.ERROR_MESSAGE, null, null, null) == 0;
}
public void doInfo(boolean alarm, String msg) {
if (alarm) {
getJtfInfo().setForeground(Color.red);
} else {
getJtfInfo().setForeground(Color.blue);
}
getJtfInfo().setText(msg);
}
/**
* This method initializes jtfInfo
*
* @return javax.swing.JTextField
*/
private JTextField getJtfInfo() {
if (jtfInfo == null) {
jtfInfo = new JTextField();
jtfInfo.setEditable(false);
}
return jtfInfo;
}
} // @jve:decl-index=0:visual-constraint="10,10"
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package com.xuggler;
import java.io.File;
public class XuggleDemo {
public static void main(String[] args) {
doCaptureWebCamFrame();
}
public static File doCaptureWebCamFrame() {
return WebCamDialog.getInstance().init();
}
}
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基于xuggler，具体可以参考
http://www.xuggle.com/public/documentation/java/api/
更改后可以支持文件的调用，验证的支持编码有MP4，wmv等。
java实现摄像头调用，处理视频流
package com.xuggler;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageOutputStream;
import javax.swing.Icon;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import java.awt.Frame;
import java.awt.BorderLayout;
import javax.swing.JDialog;
import javax.swing.JButton;
import com.xuggle.xuggler.ICodec;
import com.xuggle.xuggler.IContainer;
import com.xuggle.xuggler.IContainerFormat;
import com.xuggle.xuggler.IError;
import com.xuggle.xuggler.IMetaData;
import com.xuggle.xuggler.IPacket;
import com.xuggle.xuggler.IPixelFormat;
import com.xuggle.xuggler.IStream;
import com.xuggle.xuggler.IStreamCoder;
import com.xuggle.xuggler.IVideoPicture;
import com.xuggle.xuggler.IVideoResampler;
import com.xuggle.xuggler.Utils;
import java.awt.Color;
import java.awt.Component;
import java.awt.Desktop;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import javax.swing.JTextField;
public class WebCamDialog extends JDialog {
private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private static WebCamDialog instance = null;
public static WebCamDialog getInstance() {
if (instance == null) {
instance = new WebCamDialog(null);
instance.setModal(true);
instance.setLocationRelativeTo(null);
}
return instance;
}
private void doPackDialog() {
if (FORMAT_BIG.equals(usingFormat)) {
getPanelCenter().setPreferredSize(new Dimension(1280, 1024));
} else {
getPanelCenter().setPreferredSize(new Dimension(800, 600));
}
pack();
this.setLocationRelativeTo(null);
}
/**
* @param owner
*/
private WebCamDialog(Frame owner) {
super(owner);
initialize();
}
/**
* This method initializes this
*
* @return void
*/
private void initialize() {
this.setContentPane(getJContentPane());
this.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
this.setSize(new Dimension(521, 239));
this.setTitle("webcamdialog");
}
@Override
public void dispose() {
super.dispose();
}
/**
* This method initializes jContentPane
*
* @return javax.swing.JPanel
*/
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(new BorderLayout());
jContentPane.add(getPanelEast(), BorderLayout.EAST);
jContentPane.add(getPanelCenter(), BorderLayout.CENTER);
}
return jContentPane;
}
private File recentCaptureFile = null;
private JPanel panelEast = null;
private JButton jButtonCaptureAndReturn = null;
private JButton jButtonExit = null;
private JPanel panelCenter = null;
private JButton jButtonCapture = null;
private JButton jButtonOpenFolder = null;
private BufferedImage javaImage = null;
private Thread th = null; // @jve:decl-index=0:
public File init() {
doOpen();
this.setVisible(true);
return recentCaptureFile;
}
private void doOpen() {
doClose = false;
if (th != null && th.isAlive() && container != null && container.isOpened()) {
} else {
th = getNewThread();
th.start();
}
}
private String deviceName = "0"; // @jve:decl-index=0:
private String driverName = "vfwcap";
private IContainerFormat format = null;
private IMetaData params = null;
private IContainer container = null;
private int videoStreamId = -1;
private IStreamCoder videoCoder = null;
private IVideoResampler resampler = null;
private boolean doClose = false;
private boolean onMovie = false;// 开始抓数据
private static final String FORMAT_NORMAL = "800x600"; // @jve:decl-index=0:
private static final String FORMAT_BIG = "1280x1024"; // @jve:decl-index=0:
private String usingFormat = FORMAT_NORMAL; // @jve:decl-index=0:
public static int ask(String title, Object info, Object[] options, Object initOption,
Component basement) {
return showOptionDialog(basement, info, title, JOptionPane.YES_NO_OPTION,
JOptionPane.QUESTION_MESSAGE, null, options, initOption);
}
private static int showOptionDialog(Component parentComponent, Object message, String title,
int optionType, int messageType, Icon icon, Object[] options, Object initialValue) {
return JOptionPane.showOptionDialog(parentComponent, message, title, optionType,
messageType, icon, options, initialValue);
}
private Thread getNewThread() {
// 选择分辨率
int rtn = ask("视频分辨率", "请选择要使用的视频分辨率，若您的计算机性能一般或无特殊需求，请选择普通分辨率。", new String[] {
"普通分辨率800x600", "高清分辨率1280x1024" }, "普通分辨率800x600", this);
if (rtn == 0) {
usingFormat = FORMAT_NORMAL;
} else {
usingFormat = FORMAT_BIG;
}
pack();
this.setLocationRelativeTo(null);
return new Thread(new Runnable() {
@SuppressWarnings("deprecation")
@Override
public void run() {
onMovie = false;
doInfo(false, "开始连接到摄像头硬件...");
// Let's make sure that we can actually convert video pixel
// formats.
if (!IVideoResampler
.isSupported(IVideoResampler.Feature.FEATURE_COLORSPACECONVERSION))
throw new RuntimeException(
"you must install the GPL version of Xuggler (with IVideoResampler support) for this demo to work");
// Tell Xuggler about the device format
format = IContainerFormat.make();
if (format.setInputFormat(driverName) < 0) {
doInfo(true, "无法连接到摄像头驱动...");
throw new IllegalArgumentException("couldn't open webcam device: " + driverName);
}
// devices, unlike most files, need to have parameters set in
// order for Xuggler to know how to configure them, for a
// webcam, these parameters make sense
params = IMetaData.make();
params.setValue("framerate", "30/1");
params.setValue("video_size", "320x240");
//params.setValue("framerate", "20/1");
//params.setValue("video_size", usingFormat);// 800x600 1280x1024
// Create a Xuggler container object
container = IContainer.make();
// Open up the container
int retval = container.open(deviceName, IContainer.Type.READ, format, false, true,params, null);
//int retval = container.open("G:\\eclicps_workspace\\XugglerDemo\\01.wmv", IContainer.Type.READ, null);
//System.out.println(retval);
if (retval < 0) {
// This little trick converts the non
// friendly integer return value into
// a slightly more friendly object
// to get a human-readable error name
IError error = IError.make(retval);
doInfo(true, "无法打开摄像头设备...");
throw new IllegalArgumentException("could not open file: " + deviceName
+ "; Error: " + error.getDescription());
}
// query how many streams the call to open found
int numStreams = container.getNumStreams();
// and iterate through the streams to find the first video
// stream
videoStreamId = -1;
videoCoder = null;
for (int i = 0; i < numStreams; i++) {
// Find the stream object
IStream stream = container.getStream(i);
// Get the pre-configured decoder that can decode this
// stream;
IStreamCoder coder = stream.getStreamCoder();
if (coder.getCodecType() == ICodec.Type.CODEC_TYPE_VIDEO) {
videoStreamId = i;
videoCoder = coder;
break;
}
}
if (videoStreamId == -1) {
doInfo(true, "找不到摄像头数据流...");
throw new RuntimeException("could not find video stream in container: "
+ deviceName);
}
/*
* Now we have found the video stream in this file. Let's open
* up our decoder so it can do work.
*/
if (videoCoder.open() < 0) {
doInfo(true, "无法打开视频解码器...");
throw new RuntimeException("could not open video decoder for container: "
+ deviceName);
}
resampler = null;
if (videoCoder.getPixelType() != IPixelFormat.Type.BGR24) {
// if this stream is not in BGR24, we're going to need to
// convert it. The VideoResampler does that for us.
resampler = IVideoResampler.make(videoCoder.getWidth(), videoCoder.getHeight(),
IPixelFormat.Type.BGR24, videoCoder.getWidth(), videoCoder.getHeight(),
videoCoder.getPixelType());
if (resampler == null) {
doInfo(true, "无法生成色彩空间取样器...");
throw new RuntimeException("could not create color space resampler for: "
+ deviceName);
}
}
// Now, we start walking through the container looking at each
// packet.
IPacket packet = IPacket.make();
//doInfo(true, deviceName);
doInfo(false, "开始显示视频分辨率为" + usingFormat + "...");
doPackDialog();
onMovie = true;
all: while (container.readNextPacket(packet) >= 0) {
// Now we have a packet, let's see if it belongs to our
// video stream
if (packet.getStreamIndex() == videoStreamId) {
// We allocate a new picture to get the data out of
// Xuggler
IVideoPicture picture = IVideoPicture.make(videoCoder.getPixelType(),
videoCoder.getWidth(), videoCoder.getHeight());
int offset = 0;
while (offset < packet.getSize()) {
// Now, we decode the video, checking for any
// errors.
int bytesDecoded = videoCoder.decodeVideo(picture, packet, offset);
if (bytesDecoded < 0) {
doInfo(true, "视频解码错误...");
onMovie = false;
throw new RuntimeException("got error decoding video in: "
+ deviceName);
}
offset += bytesDecoded;
// Some decoders will consume data in a packet, but
// will not be able to construct a full video
// picture yet. Therefore you should always check if
// you got a complete picture from the decoder
if (picture.isComplete()) {
IVideoPicture newPic = picture;
// If the resampler is not null, that means we
// didn't get the video in BGR24 format and need
// to convert it into BGR24 format.
if (resampler != null) {
// we must resample
newPic = IVideoPicture.make(resampler.getOutputPixelFormat(),
picture.getWidth(), picture.getHeight());
if (resampler.resample(newPic, picture) < 0) {
doInfo(true, "视频重取样错误...");
onMovie = false;
throw new RuntimeException(
"could not resample video from: " + deviceName);
}
}
if (newPic.getPixelType() != IPixelFormat.Type.BGR24) {
doInfo(true, "无法解码BGR24数据...");
onMovie = false;
throw new RuntimeException(
"could not decode video as BGR 24 bit data in: "
+ deviceName);
}
// Convert the BGR24 to an Java buffered image
javaImage = Utils.videoPictureToImage(newPic);
// and display it on the Java Swing window
if (!updateJavaWindow(javaImage)) {
// break all;
}
if (doClose) {// 退出
doClose = false;
break all;
}
}
}
} else {
// This packet isn't part of our video stream, so we
// just silently drop it.
do {
} while (false);
}
}
onMovie = false;
doInfo(false, "开始关闭摄像头...");
/*
* Technically since we're exiting anyway, these will be cleaned
* up by the garbage collector... but because we're nice people
* and want to be invited places for Christmas, we're going to
* show how to clean up.
*/
if (videoCoder != null) {
videoCoder.close();
videoCoder = null;
}
if (container != null) {
container.close();
container = null;
}
doInfo(false, "摄像头关闭完成...");
}
});
}
private boolean updateJavaWindow(BufferedImage javaImage) {
if (getPanelCenter() == null || getPanelCenter().getGraphics() == null) {
return false;
}
return getPanelCenter().getGraphics().drawImage(javaImage, 0, 0, null);
}
/**
* This method initializes panelEast
*
* @return javax.swing.JPanel
*/
private JPanel getPanelEast() {
if (panelEast == null) {
GridLayout gridLayout = new GridLayout();
gridLayout.setRows(6);
panelEast = new JPanel();
panelEast.setLayout(gridLayout);
panelEast.add(getJButtonCaptureAndReturn(), null);
panelEast.add(getJButtonCapture(), null);
panelEast.add(getJButtonOpenFolder(), null);
panelEast.add(getJButtonExit(), null);
panelEast.add(getJButton(), null);
panelEast.add(getJtfInfo(), null);
}
return panelEast;
}
/**
* This method initializes jButtonCaptureAndReturn
*
* @return javax.swing.JButton
*/
private JButton getJButtonCaptureAndReturn() {
if (jButtonCaptureAndReturn == null) {
jButtonCaptureAndReturn = new JButton("webcam_captureandreturn");
jButtonCaptureAndReturn.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
recentCaptureFile = doCaptureFile();
if (recentCaptureFile != null) {
dispose();
}
}
});
}
return jButtonCaptureAndReturn;
}
/**
* This method initializes jButtonExit
*
* @return javax.swing.JButton
*/
private JButton getJButtonExit() {
if (jButtonExit == null) {
jButtonExit = new JButton("exit");
jButtonExit.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
recentCaptureFile = null;
dispose();
}
});
}
return jButtonExit;
}
/**
* This method initializes panelCenter
*
* @return javax.swing.JPanel
*/
private JPanel getPanelCenter() {
if (panelCenter == null) {
panelCenter = new JPanel();
panelCenter.setLayout(new BorderLayout());
}
return panelCenter;
}
/**
* This method initializes jButtonCapture
*
* @return javax.swing.JButton
*/
private JButton getJButtonCapture() {
if (jButtonCapture == null) {
jButtonCapture = new JButton("webcam_capture");
jButtonCapture.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
recentCaptureFile = doCaptureFile();
}
});
}
return jButtonCapture;
}
/**
* 抓图且存为自动的时间文件名
*
* @return
*/
private File doCaptureFile() {
if (javaImage == null) {
return null;
}
File rtn = doGetCurrentFile();
if (rtn.exists()) {
return null;
}
BufferedImage bi = javaImage;
Iterator writers = ImageIO.getImageWritersByFormatName("jpg");
ImageWriter writer = (ImageWriter) writers.next();
try {
ImageOutputStream ios = ImageIO.createImageOutputStream(rtn);
writer.setOutput(ios);
writer.write(bi);
ios.close();
} catch (java.io.IOException io) {
System.out.println("IOException");
}
return rtn;
}
/**
* 20120221 按时间生成文件名
*
* @return
*/
private File doGetCurrentFile() {
String now = String.valueOf(System.currentTimeMillis());
File rtn = new File("c:\\" + now + ".jpg");
int loop = 0;
while (rtn.exists()) {
rtn = new File("c:\\" + now + ('A' + loop) + ".jpg");
loop++;
}
return rtn;
}
/**
* This method initializes jButtonOpenFolder
*
* @return javax.swing.JButton
*/
private JButton getJButtonOpenFolder() {
if (jButtonOpenFolder == null) {
jButtonOpenFolder = new JButton("webcam_openfolder");
jButtonOpenFolder.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
try {
Desktop.getDesktop().open(new File("c:\\"));
} catch (IOException e1) {
e1.printStackTrace();
}
}
});
}
return jButtonOpenFolder;
}
private JButton jButton = null;
private JTextField jtfInfo = null;
/**
* This method initializes jButton
*
* @return javax.swing.JButton
*/
private JButton getJButton() {
if (jButton == null) {
jButton = new JButton("resetwebcam");
jButton.addActionListener(new java.awt.event.ActionListener() {
@Override
public void actionPerformed(java.awt.event.ActionEvent e) {
if (onMovie == true) {
doClose = true;
th = null;
// 20120829 等待关闭完成
while (container.isOpened()) {
}
// 20120830 且重新打开
doOpen();
} else {
error(null, "errnoresponsefromwebcam", null);
}
}
});
}
return jButton;
}
public boolean error(String title, Object info, Component basement) {
return showOptionDialog(basement, info, title, JOptionPane.DEFAULT_OPTION,
JOptionPane.ERROR_MESSAGE, null, null, null) == 0;
}
public void doInfo(boolean alarm, String msg) {
if (alarm) {
getJtfInfo().setForeground(Color.red);
} else {
getJtfInfo().setForeground(Color.blue);
}
getJtfInfo().setText(msg);
}
/**
* This method initializes jtfInfo
*
* @return javax.swing.JTextField
*/
private JTextField getJtfInfo() {
if (jtfInfo == null) {
jtfInfo = new JTextField();
jtfInfo.setEditable(false);
}
return jtfInfo;
}
} // @jve:decl-index=0:visual-constraint="10,10"
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package com.xuggler;
import java.io.File;
public class XuggleDemo {
public static void main(String[] args) {
doCaptureWebCamFrame();
}
public static File doCaptureWebCamFrame() {
return WebCamDialog.getInstance().init();
}
}
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基于xuggler，具体可以参考
http://www.xuggle.com/public/documentation/java/api/
更改后可以支持文件的调用，验证的支持编码有MP4，wmv等。