/*
* This file is part of VLCJ.
*
* VLCJ is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* VLCJ is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with VLCJ. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2009, 2010, 2011, 2012, 2013, 2014 Caprica Software Limited.
*/
package uk.co.caprica.vlcj.test.capture;
import java.awt.BorderLayout;
import java.awt.Canvas;
import java.awt.Color;
import java.io.File;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import uk.co.caprica.vlcj.player.MediaPlayerFactory;
import uk.co.caprica.vlcj.player.embedded.EmbeddedMediaPlayer;
import uk.co.caprica.vlcj.player.embedded.videosurface.CanvasVideoSurface;
import uk.co.caprica.vlcj.test.VlcjTest;
/**
* An example of transcoding and saving video from a capture device.
* <p>
* Capture devices often, as in the case with Video4Linux, produce raw frames of video data. These
* raw frames must be transcoded before the video can be saved or streamed.
* <p>
* This class creates a media player that captures, displays, transcodes and saves video from a
* video capture device.
* <p>
* Specify the MRL of the capture device as a command-line argument...
* <p>
* Linux:
*
* <pre>
* v4l2:///dev/video0
* </pre>
*
* Windows:
*
* <pre>
* dshow://
* </pre>
*
* Audio capture is achieved by setting a media option, for example (on Linux at least):
*
* <pre>
* :input-slave=alsa://hw:0,0
* </pre>
*
* Each time this application is executed a new time-stamped video capture file will be created in a
* directory called "Videos" under the user home directory.
*/
public class CaptureTest extends VlcjTest {
private final JFrame frame;
private final JPanel contentPane;
private final Canvas canvas;
private final MediaPlayerFactory factory;
private final EmbeddedMediaPlayer mediaPlayer;
private final CanvasVideoSurface videoSurface;
public static void main(final String[] args) {
if(args.length != 1) {
System.out.println("Specify a capture device MRL, for example \"v4l2:///dev/video0\" or \"dshow://\"");
System.exit(1);
}
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new CaptureTest().start(args[0]);
}
});
}
public CaptureTest() {
canvas = new Canvas();
canvas.setBackground(Color.black);
contentPane = new JPanel();
contentPane.setBackground(Color.black);
contentPane.setLayout(new BorderLayout());
contentPane.add(canvas, BorderLayout.CENTER);
frame = new JFrame("Capture");
frame.setIconImage(new ImageIcon(getClass().getResource("/icons/vlcj-logo.png")).getImage());
frame.setContentPane(contentPane);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLocation(50, 50);
frame.setSize(800, 600);
factory = new MediaPlayerFactory();
mediaPlayer = factory.newEmbeddedMediaPlayer();
videoSurface = factory.newVideoSurface(canvas);
mediaPlayer.setVideoSurface(videoSurface);
}
private void start(String mrl) {
frame.setVisible(true);
// GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().setFullScreenWindow(frame);
File dir = new File(System.getProperty("user.home"), "Videos");
dir.mkdirs();
DateFormat df = new SimpleDateFormat("yyyyMMdd-HHmmss");
String fileName = dir.getAbsolutePath() + "/Capture-" + df.format(new Date()) + ".mpg";
// Tweak the options depending on your encoding requirements and audio
// capture device (ALSA is not likely to work on Windows of course)
String[] options = {":sout=#transcode{vcodec=mp4v,vb=4096,scale=1,acodec=mpga,ab=128,channels=2,samplerate=44100}:duplicate{dst=file{dst=" + fileName + "},dst=display}", ":input-slave=alsa://hw:0,0"};
mediaPlayer.playMedia(mrl, options);
}
}