ExoPlayer使用GLSurfaceView播放视频

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作者
筋斗云
阅读量:3

要在GLSurfaceView上使用ExoPlayer来播放视频,您需要完成以下步骤:

  1. 在您的项目中添加ExoPlayer库的依赖项。您可以在build.gradle文件中的dependencies块中添加以下代码行:
implementation 'com.google.android.exoplayer:exoplayer-core:2.X.X' implementation 'com.google.android.exoplayer:exoplayer-ui:2.X.X' 

其中,2.X.X应替换为您要使用的ExoPlayer版本。

  1. 在您的布局文件中添加GLSurfaceView控件,例如:
<LinearLayout     android:layout_width="match_parent"     android:layout_height="match_parent">      <android.opengl.GLSurfaceView         android:id="@+id/glsurfaceview"         android:layout_width="match_parent"         android:layout_height="match_parent" /> </LinearLayout> 
  1. 在您的Activity或Fragment中,初始化ExoPlayer和GLSurfaceView,设置Renderer和SurfaceView。以下是一个示例代码:
import android.opengl.GLSurfaceView; import android.os.Bundle; import androidx.appcompat.app.AppCompatActivity; import com.google.android.exoplayer2.DefaultLoadControl; import com.google.android.exoplayer2.DefaultRenderersFactory; import com.google.android.exoplayer2.ExoPlayerFactory; import com.google.android.exoplayer2.SimpleExoPlayer; import com.google.android.exoplayer2.source.ExtractorMediaSource; import com.google.android.exoplayer2.source.MediaSource; import com.google.android.exoplayer2.trackselection.DefaultTrackSelector; import com.google.android.exoplayer2.ui.PlayerView; import com.google.android.exoplayer2.upstream.DataSource; import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory; import com.google.android.exoplayer2.util.Util;  public class MainActivity extends AppCompatActivity {      private GLSurfaceView glSurfaceView;     private SimpleExoPlayer player;      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          glSurfaceView = findViewById(R.id.glsurfaceview);         glSurfaceView.setEGLContextClientVersion(2);          player = ExoPlayerFactory.newSimpleInstance(                 new DefaultRenderersFactory(this),                 new DefaultTrackSelector(),                 new DefaultLoadControl());          PlayerView playerView = new PlayerView(this);         playerView.setPlayer(player);          glSurfaceView.setRenderer(new VideoRenderer(player));         glSurfaceView.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY);     }      @Override     protected void onResume() {         super.onResume();         glSurfaceView.onResume();     }      @Override     protected void onPause() {         super.onPause();         glSurfaceView.onPause();     }      private static class VideoRenderer implements GLSurfaceView.Renderer {          private SimpleExoPlayer player;          public VideoRenderer(SimpleExoPlayer player) {             this.player = player;         }          @Override         public void onSurfaceCreated(GL10 gl10, EGLConfig eglConfig) {             Surface surface = new Surface(/* your SurfaceTexture */);             player.setVideoSurface(surface);         }          @Override         public void onSurfaceChanged(GL10 gl10, int width, int height) {             // Adjust the player's video output to match the GLSurfaceView's dimensions.         }          @Override         public void onDrawFrame(GL10 gl10) {             // Render the video frame using OpenGL.         }     } } 

其中,VideoRenderer类实现了GLSurfaceView的Renderer接口,用于在onSurfaceCreated方法中将SurfaceTexture与ExoPlayer关联起来。

  1. 在上述示例代码中,您可以使用ExtractorMediaSource从URL加载视频。例如:
MediaSource mediaSource = buildMediaSource(Uri.parse("http://example.com/video.mp4")); player.prepare(mediaSource); player.setPlayWhenReady(true); 

buildMediaSource方法用于构建适当的MediaSource对象,您可以根据需要选择不同的MediaSource实现。

  1. 确保您已在AndroidManifest.xml文件中包含了必要的权限,例如网络访问权限。

以上是使用GLSurfaceView和ExoPlayer播放视频的基本步骤。您可以根据需要进行自定义和调整。

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