【VLC-Android】vlc-android简例
前言
继续折腾vlc，做这个例子并不顺利，卡在只有声音没有图像这个问题好久，网上的例子有些API已经对不上，继续分享，，，
声明
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正文
截图
项目
代码
public class VlcVideoActivity extends Activity implements SurfaceHolder.Callback, IVideoPlayer { private final static String TAG = "[VlcVideoActivity]"; private SurfaceView mSurfaceView; private LibVLC mMediaPlayer; private SurfaceHolder mSurfaceHolder; private View mLoadingView; private int mVideoHeight; private int mVideoWidth; private int mVideoVisibleHeight; private int mVideoVisibleWidth; private int mSarNum; private int mSarDen; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_video_vlc); mSurfaceView = (SurfaceView) findViewById(R.id.video); mLoadingView = findViewById(R.id.video_loading); try { mMediaPlayer = VLCInstance.getLibVlcInstance(); } catch (LibVlcException e) { e.printStackTrace(); } mSurfaceHolder = mSurfaceView.getHolder(); mSurfaceHolder.setFormat(PixelFormat.RGBX_8888); mSurfaceHolder.addCallback(this); mMediaPlayer.eventVideoPlayerActivityCreated(true); EventHandler em = EventHandler.getInstance(); em.addHandler(mVlcHandler); this.setVolumeControlStream(AudioManager.STREAM_MUSIC); mSurfaceView.setKeepScreenOn(true); // mMediaPlayer.setMediaList(); // mMediaPlayer.getMediaList().add(new Media(mMediaPlayer, "http://live.3gv.ifeng.com/zixun.m3u8"), false); // mMediaPlayer.playIndex(0); mMediaPlayer.playMRL("http://live.3gv.ifeng.com/zixun.m3u8"); } @Override public void onPause() { super.onPause(); if (mMediaPlayer != null) { mMediaPlayer.stop(); mSurfaceView.setKeepScreenOn(false); } } @Override protected void onDestroy() { super.onDestroy(); if (mMediaPlayer != null) { mMediaPlayer.eventVideoPlayerActivityCreated(false); EventHandler em = EventHandler.getInstance(); em.removeHandler(mVlcHandler); } } @Override public void onConfigurationChanged(Configuration newConfig) { setSurfaceSize(mVideoWidth, mVideoHeight, mVideoVisibleWidth, mVideoVisibleHeight, mSarNum, mSarDen); super.onConfigurationChanged(newConfig); } @Override public void surfaceCreated(SurfaceHolder holder) { if (mMediaPlayer != null) { mSurfaceHolder = holder; mMediaPlayer.attachSurface(holder.getSurface(), this); } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { mSurfaceHolder = holder; if (mMediaPlayer != null) { mMediaPlayer.attachSurface(holder.getSurface(), this);//, width, height } if (width > 0) { mVideoHeight = height; mVideoWidth = width; } } @Override public void surfaceDestroyed(SurfaceHolder holder) { if (mMediaPlayer != null) { mMediaPlayer.detachSurface(); } } @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); } private static final int HANDLER_BUFFER_START = 1; private static final int HANDLER_BUFFER_END = 2; private static final int HANDLER_SURFACE_SIZE = 3; private static final int SURFACE_BEST_FIT = 0; private static final int SURFACE_FIT_HORIZONTAL = 1; private static final int SURFACE_FIT_VERTICAL = 2; private static final int SURFACE_FILL = 3; private static final int SURFACE_16_9 = 4; private static final int SURFACE_4_3 = 5; private static final int SURFACE_ORIGINAL = 6; private int mCurrentSize = SURFACE_BEST_FIT; 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: //播放完成 break; } } }; private Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case HANDLER_BUFFER_START: showLoading(); break; case HANDLER_BUFFER_END: hideLoading(); break; case HANDLER_SURFACE_SIZE: changeSurfaceSize(); break; } } }; private void showLoading() { mLoadingView.setVisibility(View.VISIBLE); } private void hideLoading() { mLoadingView.setVisibility(View.GONE); } private void changeSurfaceSize() { // get screen size int dw = getWindowManager().getDefaultDisplay().getWidth(); int dh = getWindowManager().getDefaultDisplay().getHeight(); // calculate aspect ratio double ar = (double) mVideoWidth / (double) mVideoHeight; // calculate display aspect ratio double dar = (double) dw / (double) dh; switch (mCurrentSize) { case SURFACE_BEST_FIT: if (dar < ar) dh = (int) (dw / ar); else dw = (int) (dh * ar); break; case SURFACE_FIT_HORIZONTAL: dh = (int) (dw / ar); break; case SURFACE_FIT_VERTICAL: dw = (int) (dh * ar); break; case SURFACE_FILL: break; case SURFACE_16_9: ar = 16.0 / 9.0; if (dar < ar) dh = (int) (dw / ar); else dw = (int) (dh * ar); break; case SURFACE_4_3: ar = 4.0 / 3.0; if (dar < ar) dh = (int) (dw / ar); else dw = (int) (dh * ar); break; case SURFACE_ORIGINAL: dh = mVideoHeight; dw = mVideoWidth; break; } mSurfaceHolder.setFixedSize(mVideoWidth, mVideoHeight); ViewGroup.LayoutParams lp = mSurfaceView.getLayoutParams(); lp.width = dw; lp.height = dh; mSurfaceView.setLayoutParams(lp); mSurfaceView.invalidate(); } }
代码说明
1、vlc-android的版本为2.2.0-pre1 Weatherwax
2、拷贝vlc-android官网例子下面org.videolan.libvlc所有的类，以及VLCInstance、Preferences。只有声音没有画面就出在VLCInstance这个问题上，少了一些配置，参考VLCInstance.updateLibVlcSettings。
3、playMRL不要用Uri来转，否则打不开
4、提供的代码已经编译好了so，也修改源码打开了EventHandler.MediaPlayerBuffering（也修改了libvlcjni.c），但是还是没有缓冲进度的值，还有待进一步探索。
5、实际发现如果只在surfaceChanged中attachSurface，setSurfaceSize回调不会触发，需要同时在surfaceCreated中设置。
6、本文不讨论Handler非静态可能引发内存泄露的问题，大家写的时候自己注意一下 :)
下载
https://github.com/over140/vlc-android-demo （注意工程是Android Studio的工程）
文章
1、vlc-android 中调用用libvlcjni.so实现流媒体播放
2、[Github]vlc-android-macbuild
5、vlc-android 获取MediaPlayerEncounteredError，MediaPlayerBuffering等各种事件的响应
结束
文章2的GitHub项目是对vlc进行封装，也挺不错了，值得参考。vlc-android的例子写的比较复杂，而且api可能老变，大家看文章的时候注意一下版本问题。
