在两种观点Android摄像头preVIEW（多镜头相机preVIEW）两种、摄像头、镜头、观点

2023-09-04 04:24:40 作者：生死皆闲事

我需要两个摄像头previews在我的应用程序。但是，Android摄像头可以给只有一个preVIEW的时间。有没有什么办法可以流水线/复制preVIEW另一种观点？我碰到这个问题，How建立在Android的使用一台摄像机的多镜头或preVIEW他说，

I need two camera previews in my app. However, android camera can give only one preview at a time. Is there any way to pipeline/copy that preview to another view? I came across this question How to create multi lenses or preview using one camera in Android and he says that

在Android 3.0或更高版本，您可以使用set previewTexture方法来管preVIEW数据转换成一个OpenGL纹理，然后你就可以渲染到多个四边形的GLSurfaceView或等价的。

不过，我不知道如何来呈现多个四边形的 GLSurfaceView 。我需要支持Android 4.0+。但我不希望使用preVIEW框架由preVIEW回调。它会导致显著延迟。任何帮助将是AP preciated。谢谢！

But I have no idea how to render that to multiple quads in GLSurfaceView.I need to support android 4.0+. But I don't want to use preview frame from preview callback. It causes significant delay. Any help would be appreciated. Thanks!!

下面是我的$ C $下单preVIEW

Here is my code for single preview

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/black"
    tools:context=".MainActivity" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        android:weightSum="10" >

        <TextureView
            android:id="@+id/textureView1"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="5" />

        <TextureView
            android:id="@+id/textureView2"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="5" />
    </LinearLayout>

</RelativeLayout>

MainActivity.java

public class MainActivity extends Activity implements SurfaceTextureListener{

    private Camera mCamera;
    private TextureView mTextureView1;
    private TextureView mTextureView2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mTextureView1 = (TextureView) findViewById(R.id.textureView1);
        mTextureView2 = (TextureView) findViewById(R.id.textureView2);

        mTextureView1.setSurfaceTextureListener(this);
    }



    @Override
    public void onSurfaceTextureAvailable(SurfaceTexture surface, int width,
            int height) {


        try {
            mCamera = Camera.open(getCameraId());
            mCamera.setPreviewTexture(surface);
            CameraInfo cameraInfo = new CameraInfo();
            Camera.getCameraInfo(getCameraId(), cameraInfo);
            setCameraDisplayOrientation(this, getCameraId(), mCamera);
            mCamera.startPreview();

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    @Override
    public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
        try {
            mCamera.stopPreview();
            mCamera.release();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return true;
    }

    @Override
    public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width,
            int height) {


    }

    @Override
    public void onSurfaceTextureUpdated(SurfaceTexture surface) {

    }


}

输出：

Output:

在两种观点Android摄像头preVIEW（多镜头相机preVIEW）两种、摄像头、镜头、观点

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