السلام عليكم انا اشتغل على برنامج ياخذ الفيديو ويقطعه الى فريمات صور
البرنامج شغال بشكل كامل لكن اريد ان ادخل موقع الفيديو عن طريق المستخدم لانه بالبرنامج اقوك بادخال اسم الفيديو بال arguments كما اني اريد تقليل زياده وقت التقطيع بحيث يقطع كل 3 ثواني
ارجو من اخواني المبرمجين الاعزاء مساعدتي كما وارجو ان يقوموا بتنفيذ البرنامج حتى يتم فهم ما اقصده قبل الاجابه لافادتي ومعرفه ما اقصد وسارفق بطيه الكود
package videotest;
import java.awt.*;
import javax.media.*;
import javax.media.control.TrackControl;
import javax.media.Format;
import javax.media.format.*;
import java.io.*;
import javax.imageio.*;
import javax.imageio.stream.*;
import java.awt.image.*;
import java.util.*;
import javax.media.util.*;
import javax.media.jai.Histogram;
/**
* Sample program to access individual video frames by using a
* "pass-thru" codec. The codec is inserted into the data flow
* path. As data pass through this codec, a callback is invoked
* for each frame of video data.
*/
public class FrameAccess implements ControllerListener {
Processor p;
Object waitSync = new Object();
boolean stateTransitionOK = true;
public boolean alreadyPrnt = false;
String[] args;
/**
* Given a media locator, create a processor and use that processor
* as a player to playback the media.
*
* During the processor's Configured state, two "pass-thru" codecs,
* PreAccessCodec and PostAccessCodec, are set on the video track.
* These codecs are used to get access to individual video frames
* of the media.
*
* Much of the code is just standard code to present media in JMF.
*/
public boolean open(MediaLocator ml) {
try {//System.out.print("Welcome");
p = Manager.createProcessor(ml);
} catch (Exception e) {
System.err.println(
"Failed to create a processor from the given url: " + e);
return false;
}
p.addControllerListener(this);
// Put the Processor into configured state.
p.configure();
if (!waitForState(Processor.Configured)) {
System.err.println("Failed to configure the processor.");
return false;
}
// So I can use it as a player.
p.setContentDescriptor(null);
// Obtain the track controls.
TrackControl tc[] = p.getTrackControls();
if (tc == null) {
System.err.println(
"Failed to obtain track controls from the processor.");
return false;
}
// Search for the track control for the video track.
TrackControl videoTrack = null;
for (int i = 0; i < tc.length; i++) {
if (tc.getFormat() instanceof VideoFormat) videoTrack = tc;
else tc.setEnabled(false);
}
if (videoTrack == null) {
System.err.println("The input media does not contain a video track.");
return false;
}
String videoFormat = videoTrack.getFormat().toString();
Dimension videoSize = parseVideoSize(videoFormat);
System.err.println("Video format: " + videoFormat);
// Instantiate and set the frame access codec to the data flow path.
try {
Codec codec[] = { new PostAccessCodec(videoSize)};
videoTrack.setCodecChain(codec);
} catch (UnsupportedPlugInException e) {
System.err.println("The process does not support effects.");
}
// Realize the processor.
p.prefetch();
if (!waitForState(Processor.Prefetched)) {
System.err.println("Failed to realise the processor.");
return false;
}
p.start();
return true;
}
/**parse the size of the video from the string videoformat*/
public Dimension parseVideoSize(String videoSize){
int x=300, y=200;
StringTokenizer strtok = new StringTokenizer(videoSize, ", ");
strtok.nextToken();
String size = strtok.nextToken();
StringTokenizer sizeStrtok = new StringTokenizer(size, "x");
try{
x = Integer.parseInt(sizeStrtok.nextToken());
y = Integer.parseInt(sizeStrtok.nextToken());
} catch (NumberFormatException e){
System.out.println("unable to find video size, assuming default of 300x200");
}
System.out.println("Image width = " + String.valueOf(x) +"\nImage height = "+ String.valueOf(y));
return new Dimension(x, y);
}
/**
* Block until the processor has transitioned to the given state.
* Return false if the transition failed.
*/
boolean waitForState(int state) {
synchronized (waitSync) {
try {
while (p.getState() != state && stateTransitionOK)
waitSync.wait();
} catch (Exception e) {
}
}
return stateTransitionOK;
}
/**
* Controller Listener.
*/
public void controllerUpdate(ControllerEvent evt) {
if (evt instanceof ConfigureCompleteEvent
|| evt instanceof RealizeCompleteEvent
|| evt instanceof PrefetchCompleteEvent) {
synchronized (waitSync) {
stateTransitionOK = true;
waitSync.notifyAll();
}
} else if (evt instanceof ResourceUnavailableEvent) {
synchronized (waitSync) {
stateTransitionOK = false;
waitSync.notifyAll();
}
} else if (evt instanceof EndOfMediaEvent) {
p.close();
System.exit(0); System.out.print("Welcome11");
}
}
/**
* Main program
*/
public static void main(String [] args) {
if (args.length == 0) {
prUsage();
System.exit(0);
}
String url = args[0];
if (url.indexOf(":") < 0) {
prUsage();
System.exit(0);
}
MediaLocator ml;
if ((ml = new MediaLocator(url)) == null) {
System.err.println("Cannot build media locator from: " + url);
System.exit(0);
}
FrameAccess fa = new FrameAccess();
if (!fa.open(ml))
System.exit(0);
}
static void prUsage() {
System.err.println("Usage: java FrameAccess <url>");
}
/*********************************************************
* Inner class.
*
* A pass-through codec to access to individual frames.
*********************************************************/
public class PreAccessCodec implements Codec {
/**
* Callback to access individual video frames.
*/
void accessFrame(Buffer frame) {
// For demo, we'll just print out the frame #, time &
// data length.
long t = (long) (frame.getTimeStamp() / 10000000f);
System.err.println(
"Pre: frame #: "
+ frame.getSequenceNumber()
+ ", time: "
+ ((float) t) / 100f
+ ", len: "
+ frame.getLength());
}
/**
* The code for a pass through codec.
*/
// We'll advertize as supporting all video formats.
protected Format supportedIns[] = new Format[] { new VideoFormat(null)};
// We'll advertize as supporting all video formats.
protected Format supportedOuts[] = new Format[] { new VideoFormat(null)};
Format input = null, output = null;
public String getName() {
return "Pre-Access Codec";
}
//these dont do anything
public void open() {}
public void close() {}
public void reset() {}
public Format[] getSupportedInputFormats() {
return supportedIns;
}
public Format[] getSupportedOutputFormats(Format in) {
if (in == null)
return supportedOuts;
else {
// If an input format is given, we use that input format
// as the output since we are not modifying the bit stream
// at all.
Format outs[] = new Format[1];
outs[0] = in;
return outs;
}
}
public Format setInputFormat(Format format) {
input = format;
return input;
}
public Format setOutputFormat(Format format) {
output = format;
return output;
}
public int process(Buffer in, Buffer out) {
// This is the "Callback" to access individual frames.
accessFrame(in);
// Swap the data between the input & output.
Object data = in.getData();
in.setData(out.getData());
out.setData(data);
// Copy the input attributes to the output
out.setFlags(Buffer.FLAG_NO_SYNC);
out.setFormat(in.getFormat());
out.setLength(in.getLength());
out.setOffset(in.getOffset());
return BUFFER_PROCESSED_OK;
}
public Object[] getControls() {
return new Object[0];
}
public Object getControl(String type) {
return null;
}
}
public class PostAccessCodec extends PreAccessCodec {
// We'll advertize as supporting all video formats.
public PostAccessCodec(Dimension size) {
supportedIns = new Format[] { new RGBFormat()};
this.size = size;
}
/**
* Callback to access individual video frames.
*/
void accessFrame(Buffer frame) {
// For demo, we'll just print out the frame #, time &
// data length.
if (!alreadyPrnt) {
BufferToImage stopBuffer = new BufferToImage((VideoFormat) frame.getFormat());
Image stopImage = stopBuffer.createImage(frame);
try {
BufferedImage outImage = new BufferedImage(size.width, size.height, BufferedImage.TYPE_INT_RGB);
Graphics og = outImage.getGraphics();
og.drawImage(stopImage, 0, 0, size.width, size.height, null);
//prepareImage(outImage,rheight,rheight, null);
Iterator writers = ImageIO.getImageWritersByFormatName("jpg");
ImageWriter writer = (ImageWriter) writers.next();
//Once an ImageWriter has been obtained, its destination must be set to an ImageOutputStream:
File f = new File(frame.getSequenceNumber() + ".jpg");
ImageOutputStream ios = ImageIO.createImageOutputStream(f);
writer.setOutput(ios);
//Finally, the image may be written to the output stream:
//BufferedImage bi;
//writer.write(imagebi);
writer.write(outImage);
ios.close();
} catch (IOException e) {
System.out.println("Error :" + e);
}
}
//alreadyPrnt = true;
long t = (long) (frame.getTimeStamp() / 10000000f);
System.err.println(
"Post: frame #: "
+ frame.getSequenceNumber()
+ ", time: "
+ ((float) t) / 100f
+ ", len: "
+ frame.getLength());
}
public String getName() {
return "Post-Access Codec";
}
private Dimension size;
}
}