get Required Rotation for Camera - Android android.hardware

Android examples for android.hardware:Camera Rotation

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Description

get Required Rotation for Camera

Demo Code

import android.app.Activity;
import android.content.Context;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.view.Surface;

public class Main{

    public static int getRequiredRotation(Camera cam, Activity act,
            int camId, boolean preview) {
        Camera.CameraInfo camInfo = new Camera.CameraInfo();
        Camera.getCameraInfo(camId, camInfo);
        int deviceRotation = act.getWindowManager().getDefaultDisplay()
                .getRotation();//from   w w  w  .  j a  va2 s .  c om
        int deviceAngle = 0;
        switch (deviceRotation) {
        case Surface.ROTATION_0:
            deviceAngle = 0;
            break;
        case Surface.ROTATION_90:
            deviceAngle = 90;
            break;
        case Surface.ROTATION_180:
            deviceAngle = 180;
            break;
        case Surface.ROTATION_270:
            deviceAngle = 270;
            break;
        }
        int result;
        if (preview) {
            //rotate
            result = (camInfo.orientation + deviceAngle) % 360;
            //account for front-camera mirroring
            result = (360 - result) % 360;
        } else {
            result = (camInfo.orientation + deviceAngle) % 360;
        }
        return result;
    }

}

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