vlc for android demo

• 前言

  vlc for android 是一款强大的android播放器，支持较多的视频格式，当然，也支持网络流媒体格式。
  下面通过一段示例工程来演示.

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• 开始

  1. 首先将页面搭建好，即最基本的开始、暂停，以及渲染视屏的SurfaceView.（页面部分就不过多阐述了…）
  2. 获取libVlc实例

mLibVLC=VLCInstance.getLibVlcInstance(getApplicationContext());

注：这里需要静态的Context，一般有两种做法，一种就是获取Application的，另一种如下所示.

public class VLCApplication extends Application {

    private static VLCApplication sInstance;

    @Override
    public void onCreate() {
        super.onCreate();

        sInstance = this;
    }

    public static Context getAppContext() {
        return sInstance;
    }
}

然后在AndroidManifest中声明这个Application:

        android:name=".VLCApplication"

3.EnventHandler

EventHandler em = EventHandler.getInstance();
        em.addHandler(mVlcHandler);

private Handler mVlcHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            if (msg == null || msg.getData() == null)
                return;

            switch (msg.getData().getInt("event")) {
                case EventHandler.MediaPlayerTimeChanged:
                    break;
                case EventHandler.MediaPlayerPositionChanged:
                    break;
                case EventHandler.MediaPlayerPlaying:
                    mHandler.removeMessages(HANDLER_BUFFER_END);
                    mHandler.sendEmptyMessage(HANDLER_BUFFER_END);
                    break;
                case EventHandler.MediaPlayerBuffering:
                    break;
                case EventHandler.MediaPlayerLengthChanged:
                    break;
                case EventHandler.MediaPlayerEndReached:
                    endReached();
                    break;
            }

        }
    };

4.surfaceView的Holder ->callbcak

surfaceView = (SurfaceView) findViewById(R.id.play_view);
surfaceHolder = surfaceView.getHolder();        surfaceHolder.setFormat(PixelFormat.RGBA_8888);
surfaceHolder.addCallback(this);

注：callBack方法

public void surfaceChanged(SurfaceHolder surfaceholder, int format, int width, int height)
    {
        surfaceHolder = surfaceholder;
        if (mLibVLC != null) {
            mLibVLC.attachSurface(surfaceholder.getSurface(), this);//, width, height
        }
        if (width > 0) {
            mVideoHeight = height;
            mVideoWidth = width;
        }
    }

    //callback video view destroyed
    public void surfaceDestroyed(SurfaceHolder surfaceholder)
    {
        mLibVLC.detachSurface();
        System.out.println("surfaceDestroyed called");

    }

    //callback video view created
    public void surfaceCreated(SurfaceHolder holder)
    {
        if (mLibVLC != null) {
            surfaceHolder = holder;
            mLibVLC.attachSurface(holder.getSurface(), this);
        }
    }

 @Override
    public void setSurfaceSize(int width, int height, int visible_width, int visible_height, int sar_num, int sar_den) {
        mVideoHeight = height;
        mVideoWidth = width;
        mVideoVisibleHeight = visible_height;
        mVideoVisibleWidth = visible_width;
        mSarNum = sar_num;
        mSarDen = sar_den;
        mHandler.removeMessages(HANDLER_SURFACE_SIZE);
        mHandler.sendEmptyMessage(HANDLER_SURFACE_SIZE);
    }

5.播放、暂停控制

    /**
     * 点击事件
     */
    private void pause()
    {
        if (mLibVLC.isPlaying()) {
            mLibVLC.pause();
        }
    }

    private void play()
    {
        if (!mLibVLC.isPlaying())
        {
            mLibVLC.play();

        }
    }

6.全屏、屏幕旋转

重写onConfigurationChanged方法,在此方法中处理surfaceView的大小.

    public void onConfigurationChanged(Configuration newConfig) {
}

注：监听屏幕旋转需要权限，需在AndroidManifest中加入

    <uses-permission android:name="android.permission.CHANGE_CONFIGURATION"></uses-permission>

其次，对应的Acitivity也需添加：

 android:configChanges="orientation|keyboard">