get Camera Display Orientation, Assumes the starting position is 0 (landscape, clockwise) - Android android.hardware

Android examples for android.hardware:Camera Orientation

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  2. Android
  3. android.hardware
  4. Camera Orientation

Description

get Camera Display Orientation, Assumes the starting position is 0 (landscape, clockwise)

Demo Code

import android.annotation.TargetApi;
import android.app.Activity;
import android.hardware.Camera;
import android.os.Build;
import android.util.Log;
import android.view.Surface;
import java.util.List;

public class Main{

    /**//from www .  ja  v  a2 s. c o m
     * Assumes the starting position is 0 (landscape, clockwise).
     * @param activity
     * @param cameraId
     * @return the camera's display orientation
     */
    public static int getCameraDisplayOrientation(Activity activity,
            int cameraId) {
        Camera.CameraInfo info = new Camera.CameraInfo();
        Camera.getCameraInfo(cameraId, info);
        int rotation = activity.getWindowManager().getDefaultDisplay()
                .getRotation();
        int degrees = 0;
        switch (rotation) {
        case Surface.ROTATION_0:
            degrees = 0;
            break;
        case Surface.ROTATION_90:
            degrees = 90;
            break;
        case Surface.ROTATION_180:
            degrees = 180;
            break;
        case Surface.ROTATION_270:
            degrees = 270;
            break;
        }

        int result;
        if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
            result = (info.orientation + degrees) % 360;
            result = (360 - result) % 360; // compensate the mirror
        } else { // back-facing
            result = (info.orientation - degrees + 360) % 360;
        }
        return result;
    }

}

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