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

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。

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>

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。

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。

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。