Android Open Source - SpartanTimeLapseRecorder Orientation Sensor

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Back to project page SpartanTimeLapseRecorder.

License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * Spartan Time Lapse Recorder - Minimalistic android time lapse recording app
 * Copyright (C) 2014  Andreas Rohner/*from   w w w  .  j  a  va 2  s.  co  m*/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package at.andreasrohner.spartantimelapserec.sensor;

import android.content.Context;
import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.view.OrientationEventListener;

public class OrientationSensor extends OrientationEventListener {
  private int mOrientation;

  public OrientationSensor(Context context) {
    super(context);

  }

  @Override
  public void onOrientationChanged(int orientation) {
    if (orientation != ORIENTATION_UNKNOWN)
      mOrientation = orientation;
  }

  public int getCameraRotation(int cameraId) {
    Camera.CameraInfo info = new Camera.CameraInfo();
    Camera.getCameraInfo(cameraId, info);

    mOrientation = (mOrientation + 45) / 90 * 90;
    int rotation = 0;
    if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
      rotation = (info.orientation - mOrientation + 360) % 360;
    } else { // back-facing camera
      rotation = (info.orientation + mOrientation) % 360;
    }

    return rotation;
  }
}

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