Android libvlc多个表面问题 [英] android libvlc multiple surface problems

问题描述

我想知道是否可以在相同的布局中使用两个曲面并同时查看每个曲面.将来我会使用视频视图的网格视图，但是每个视频视图都使用vlc.

I would know if is possible to use two surface in same layout and view each at same time. In future I would a grid-view of video-view, but each video-view using vlc.

我修改了此示例( android-vlc-sample )使用片段.

I modify this sample (android-vlc-sample) using fragment.

结果是我只能看到一个视频...我该如何解决?

The result is that I see only one video...How can I solve ?

从log-cat中我看不到重要的错误，但我认为android UIThread存在渲染问题

From log-cat I not see important error, but I think that there are rendering problems for android UIThread

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"?>

<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" />

单个片段布局

<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>

推荐答案

请尝试以下操作:

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

P.S.您使用的是哪个版本的LibVLC-android?

P.S. What version of LibVLC-android you are using?

P.P.S. 查看全文