要从无人机摄像头流中获取位图数据并在Android应用程序中显示,您需要完成以下几个步骤:
ExoPlayer
或MediaPlayer
进行处理。MediaCodec
进行视频解码。ImageView
中。以下是一个简单的示例代码,展示如何使用ExoPlayer
和MediaCodec
获取并显示无人机摄像头流的位图数据:
import android.graphics.Bitmap;
import android.graphics.SurfaceTexture;
import android.media.MediaCodec;
import android.media.MediaFormat;
import android.view.Surface;
import com.google.android.exoplayer2.ExoPlayer;
import com.google.android.exoplayer2.ExoPlayerFactory;
import com.google.android.exoplayer2.source.MediaSource;
import com.google.android.exoplayer2.upstream.DataSource;
import com.google.android.exoplayer2.upstream.DefaultDataSourceFactory;
import com.google.android.exoplayer2.util.Util;
public class DroneVideoActivity extends AppCompatActivity {
private ExoPlayer player;
private Surface surface;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_drone_video);
surface = new Surface(new SurfaceTexture(0));
player = ExoPlayerFactory.newSimpleInstance(this);
String videoUrl = "rtsp://your_drone_camera_stream_url";
MediaSource mediaSource = new ProgressiveMediaSource.Factory(
new DefaultDataSourceFactory(this, Util.getUserAgent(this, "your_app_name"))
).createMediaSource(Uri.parse(videoUrl));
player.prepare(mediaSource);
player.setVideoSurface(surface);
player.play();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (player != null) {
player.release();
player = null;
}
}
}
WeakReference
避免内存泄漏。通过以上步骤和示例代码,您可以在Android应用程序中成功获取并显示无人机摄像头流的位图数据。
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