我正在尝试制作一个简单的Java应用程序，该应用程序使用vlcj绑定打开媒体文件。 这些版本是： vlcj3.0.1 jna3.5.2 platform3.5.2
我正在学习一个教程，并得到以下代码：
package com.tutorial;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsEnvironment;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import com.sun.jna.Native;
import com.sun.jna.NativeLibrary;
import sun.rmi.runtime.RuntimeUtil;
import uk.co.caprica.vlcj.binding.LibVlc;
import uk.co.caprica.vlcj.component.DirectMediaPlayerComponent;
import uk.co.caprica.vlcj.discovery.NativeDiscovery;
import uk.co.caprica.vlcj.player.direct.BufferFormat;
import uk.co.caprica.vlcj.player.direct.BufferFormatCallback;
import uk.co.caprica.vlcj.player.direct.DirectMediaPlayer;
import uk.co.caprica.vlcj.player.direct.RenderCallback;
import uk.co.caprica.vlcj.player.direct.RenderCallbackAdapter;
import uk.co.caprica.vlcj.player.direct.format.RV32BufferFormat;
public class Tutorial {
private static final int width = 600;
private static final int height = 400;
private final JFrame frame;
private final JPanel videoSurface;
private final BufferedImage image;
private final DirectMediaPlayerComponent mediaPlayerComponent;
public static void main(final String[] args) {
new NativeDiscovery().discover();
NativeLibrary.addSearchPath("vlc", "/Applications/VLC.app/Contents/MacOS/lib");
Native.loadLibrary("vlc", LibVlc.class);
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Tutorial(args);
}
});
}
public Tutorial(String[] args) {
frame = new JFrame("Direct Media Player");
frame.setBounds(100, 100, width, height);
frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
videoSurface = new VideoSurfacePanel();
frame.setContentPane(videoSurface);
image = GraphicsEnvironment
.getLocalGraphicsEnvironment()
.getDefaultScreenDevice()
.getDefaultConfiguration()
.createCompatibleImage(width, height);
BufferFormatCallback bufferFormatCallback = new BufferFormatCallback() {
@Override
public BufferFormat getBufferFormat(int sourceWidth, int sourceHeight) {
return new RV32BufferFormat(width, height);
}
};
mediaPlayerComponent = new DirectMediaPlayerComponent(bufferFormatCallback) {
@Override
protected RenderCallback onGetRenderCallback() {
return new TutorialRenderCallbackAdapter();
}
};
frame.setVisible(true);
mediaPlayerComponent.getMediaPlayer().playMedia(args[0]);
}
private class VideoSurfacePanel extends JPanel {
private VideoSurfacePanel() {
setBackground(Color.black);
setOpaque(true);
setPreferredSize(new Dimension(width, height));
setMinimumSize(new Dimension(width, height));
setMaximumSize(new Dimension(width, height));
}
@Override
protected void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D)g;
g2.drawImage(image, null, 0, 0);
}
}
private class TutorialRenderCallbackAdapter extends RenderCallbackAdapter {
private TutorialRenderCallbackAdapter() {
super(new int[width * height]);
}
@Override
protected void onDisplay(DirectMediaPlayer mediaPlayer, int[] rgbBuffer) {
// Simply copy buffer to the image and repaint
image.setRGB(0, 0, width, height, rgbBuffer, 0, width);
videoSurface.repaint();
}
}
}
我尝试了很多选项，更改了路径，但现在我想这不是问题的解决之道。
我遇到的错误如下：
Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: Failed to initialise libvlc.
This is most often caused either by an invalid vlc option being passed when creating a MediaPlayerFactory or by libvlc being unable to locate the required plugins.
If libvlc is unable to locate the required plugins the instructions below may help:
In the text below <libvlc-path> represents the name of the directory containing "libvlc.dylib" and "libvlccore.dylib" and <plugins-path> represents the name of the directory containing the vlc plugins...
For libvlc to function correctly the vlc plugins must be available, there are a number of different ways to achieve this:
1. Make sure the plugins are installed in the "<libvlc-path>/vlc/plugins" directory, this should be the case with a normal vlc installation.
2. Set the VLC_PLUGIN_PATH operating system environment variable to point to "<plugins-path>".
More information may be available in the log, specify -Dvlcj.log=DEBUG on the command-line when starting your application.
at uk.co.caprica.vlcj.player.MediaPlayerFactory.<init>(MediaPlayerFactory.java:277)
at uk.co.caprica.vlcj.player.MediaPlayerFactory.<init>(MediaPlayerFactory.java:236)
at uk.co.caprica.vlcj.component.DirectMediaPlayerComponent.onGetMediaPlayerFactory(DirectMediaPlayerComponent.java:169)
at uk.co.caprica.vlcj.component.DirectMediaPlayerComponent.<init>(DirectMediaPlayerComponent.java:103)
at com.tutorial.Tutorial$4.<init>(Tutorial.java:78)
at com.tutorial.Tutorial.<init>(Tutorial.java:78)
at com.tutorial.Tutorial$1.run(Tutorial.java:50)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
at java.awt.EventQueue.access$400(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.awt.EventQueue$3.run(EventQueue.java:691)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)