Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 Copyright 2018 Theodoros Tyrovouzis
    
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at
    
 http://www.apache.org/licenses/LICENSE-2.0
    
 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 */

import android.hardware.Camera;

public class Main {
    /**
     * Calculates the front camera rotation
     * <p>
     * This calculation is applied to the output JPEG either via Exif Orientation tag
     * or by actually transforming the bitmap. (Determined by vendor camera API implementation)
     * <p>
     * Note: This is not the same calculation as the display orientation
     *
     * @param screenOrientationDegrees Screen orientation in degrees
     * @return Number of degrees to rotate image in order for it to view correctly.
     */
    public static int calcCameraRotation(int cameraId, int screenOrientationDegrees) {
        Camera.CameraInfo camInfo = new Camera.CameraInfo();
        Camera.getCameraInfo(cameraId, camInfo);
        return (camInfo.orientation + screenOrientationDegrees) % 360;
    }
}