android libvlc 多面问题

Question

我想知道是否可以在同一布局中使用两个 Surface View 并同时查看它们的内容。将来，我会使用视频 View 的 GridView ，其中每个视频 View 都使用 VLC。

我使用 fragment 修改了这个示例 (android-vlc-sample)。

结果是我只看到一个视频。我该如何解决这个问题？

从 log-cat 我没有看到任何重大错误，但我认为 android UIThread 存在渲染问题

Java 编码

public class MultipleVideoPlayFragmentActivity extends FragmentActivity {

public final static String LOCATION = "com.compdigitec.libvlcandroidsample.MultipleVideoPlayFragmentActivity.location";
private static final String TAG = "MediaPlayer";
public String mFilePatha;

@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    setContentView(R.layout.activity_multiple_video_play_fragment);
    Intent intent = getIntent();
    mFilePatha = intent.getExtras().getString(LOCATION);
}

public static class VideoFragment extends Fragment implements
        SurfaceHolder.Callback, IVideoPlayer {
    public final static String TAG = "LibVLCAndroidSample/VideoActivity";

    public final static String LOCATION = "com.compdigitec.libvlcandroidsample.VideoFragment.location";

    private String mFilePath;

    // display surface
    private SurfaceView mSurface;
    private SurfaceHolder holder;

    // media player
    private LibVLC libvlc;
    private int mVideoWidth;
    private int mVideoHeight;
    private final static int VideoSizeChanged = -1;

    /*************
     * Activity
     *************/

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        return inflater.inflate(R.layout.sample, container, false);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        // Receive path to play from intent

        Log.d(TAG, "Playing back " + mFilePath);
        mFilePath = ((MultipleVideoPlayFragmentActivity) getActivity()).mFilePatha;
        // mFilePath="rtsp://192.168.4.125:554/0";
        // mFilePath="android.resource://it.nexera.visiamobile/raw/sample_mpeg4";
        mSurface = (SurfaceView) getView().findViewById(R.id.surface);
        holder = mSurface.getHolder();
        holder.addCallback(this);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        setSize(mVideoWidth, mVideoHeight);
    }

    @Override
    public void onResume() {
        super.onResume();
        createPlayer(mFilePath);
    }

    @Override
    public void onPause() {
        super.onPause();
        releasePlayer();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        releasePlayer();
    }

    /*************
     * Surface
     *************/

    public void surfaceCreated(SurfaceHolder holder) {
    }

    public void surfaceChanged(SurfaceHolder surfaceholder, int format,
            int width, int height) {
        if (libvlc != null)
            libvlc.attachSurface(holder.getSurface(), this);
    }

    public void surfaceDestroyed(SurfaceHolder surfaceholder) {
    }

    private void setSize(int width, int height) {
        mVideoWidth = width;
        mVideoHeight = height;
        if (mVideoWidth * mVideoHeight <= 1)
            return;

        // get screen size
        int w = getActivity().getWindow().getDecorView().getWidth();
        int h = getActivity().getWindow().getDecorView().getHeight();

        // getWindow().getDecorView() doesn't always take orientation into
        // account, we have to correct the values
        boolean isPortrait = getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT;
        if (w > h && isPortrait || w < h && !isPortrait) {
            int i = w;
            w = h;
            h = i;
        }

        float videoAR = (float) mVideoWidth / (float) mVideoHeight;
        float screenAR = (float) w / (float) h;

        if (screenAR < videoAR)
            h = (int) (w / videoAR);
        else
            w = (int) (h * videoAR);

        // force surface buffer size
        holder.setFixedSize(mVideoWidth, mVideoHeight);

        // set display size
        LayoutParams lp = mSurface.getLayoutParams();
        lp.width = w;
        lp.height = h;
        mSurface.setLayoutParams(lp);
        mSurface.invalidate();
    }

    @Override
    public void setSurfaceSize(int width, int height, int visible_width,
            int visible_height, int sar_num, int sar_den) {
        Message msg = Message.obtain(mHandler, VideoSizeChanged, width,
                height);
        msg.sendToTarget();
    }

    /*************
     * Player
     *************/

    private void createPlayer(String media) {
        releasePlayer();
        try {
            if (media.length() > 0) {
                Toast toast = Toast.makeText(this.getActivity(), media,
                        Toast.LENGTH_LONG);
                toast.setGravity(
                        Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);
                toast.show();
            }

            // Create a new media player
            libvlc = LibVLC.getInstance();
            libvlc.setHardwareAcceleration(LibVLC.HW_ACCELERATION_DISABLED);
            libvlc.setSubtitlesEncoding("");
            libvlc.setAout(LibVLC.AOUT_OPENSLES);
            libvlc.setTimeStretching(true);
            libvlc.setChroma("RV32");
            libvlc.setVerboseMode(true);
            // LibVLC.restart(this.getActivity());
            EventHandler.getInstance().addHandler(mHandler);
            holder.setFormat(PixelFormat.RGBX_8888);
            holder.setKeepScreenOn(true);
            MediaList list = libvlc.getMediaList();
            list.clear();
            list.add(new Media(libvlc, LibVLC.PathToURI(media)), false);
            libvlc.playIndex(0);
        } catch (Exception e) {
            Toast.makeText(this.getActivity(), "Error creating player!",
                    Toast.LENGTH_LONG).show();
        }
    }

    private void releasePlayer() {
        if (libvlc == null)
            return;
        EventHandler.getInstance().removeHandler(mHandler);
        libvlc.stop();
        libvlc.detachSurface();
        holder = null;
        libvlc.closeAout();
        libvlc.destroy();
        libvlc = null;

        mVideoWidth = 0;
        mVideoHeight = 0;
    }

    /*************
     * Events
     *************/

    private Handler mHandler = new MyHandler(this);

    private static class MyHandler extends Handler {
        private WeakReference<VideoFragment> mOwner;

        public MyHandler(VideoFragment owner) {
            mOwner = new WeakReference<VideoFragment>(owner);
        }

        @Override
        public void handleMessage(Message msg) {
            VideoFragment player = mOwner.get();

            // SamplePlayer events
            if (msg.what == VideoSizeChanged) {
                player.setSize(msg.arg1, msg.arg2);
                return;
            }

            // Libvlc events
            Bundle b = msg.getData();
            switch (b.getInt("event")) {
            case EventHandler.MediaPlayerEndReached:
                player.releasePlayer();
                break;
            case EventHandler.MediaPlayerPlaying:
            case EventHandler.MediaPlayerPaused:
            case EventHandler.MediaPlayerStopped:
            default:
                break;
            }
        }
    }
}

}

XML 编码

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <fragment
        android:id="@+id/video_1_fragment"
        android:layout_width="100dp"
        android:layout_height="0dp"
        android:layout_weight="1"
        class="com.compdigitec.libvlcandroidsample.MultipleVideoPlayFragmentActivity$VideoFragment" />

    <fragment
        android:id="@+id/video_2_fragment"
        android:layout_width="100dp"
        android:layout_height="0dp"
        android:layout_weight="1"
        class="com.compdigitec.libvlcandroidsample.MultipleVideoPlayFragmentActivity$VideoFragment" />

</LinearLayout>

**Single Fragment Layout**

    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:baselineAligned="false"
    android:orientation="vertical"
    tools:context=".SampleActivity" >

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <SurfaceView
            android:id="@+id/surface"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_gravity="center" />
    </FrameLayout>

Answer 1

请试试这个:

--- libvlc = LibVLC.getInstance();
+++ libvlc = new LibVLC();

附:你用的是什么版本的LibVLC-android？

附言example