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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。
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。