Here you can find the source of computePictureRotation()
public static int computePictureRotation()
//package com.java2s; /**//from w ww. jav a 2 s. c o m * * Funf: Open Sensing Framework Copyright (C) 2010-2011 Nadav Aharony, Wei Pan, Alex Pentland. * Acknowledgments: Alan Gardner Contact: nadav@media.mit.edu * * Author(s): Pararth Shah (pararthshah717@gmail.com) * * This file is part of Funf. * * Funf is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser * General Public License as published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * Funf is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser * General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License along with Funf. If not, * see <http://www.gnu.org/licenses/>. * */ public class Main { private static int mCameraType; private static int mCameraAngle; public static int computePictureRotation() { if (mCameraType == 1 && (mCameraAngle == 90 || mCameraAngle == 270)) { // for front-facing camera, portrait and reverse-portrait orientation // gives mirror image of actual picture, which needs to be corrected return (180 + mCameraAngle) % 360; } return mCameraAngle; } }