Android Open Source - SpartanTimeLapseRecorder Power Saving Image Recorder

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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// w ww  . ja va  2  s  .com
 *
 * 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.recorder;

import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Handler;
import android.os.PowerManager.WakeLock;
import android.os.SystemClock;
import android.view.SurfaceHolder;
import at.andreasrohner.spartantimelapserec.PowerSavingReceiver;
import at.andreasrohner.spartantimelapserec.data.RecSettings;

public class PowerSavingImageRecorder extends ImageRecorder {
  private WakeLock mWakeLock;
  private AlarmManager mAlarmMgr;

  public PowerSavingImageRecorder(RecSettings settings,
      SurfaceHolder surfaceHolder, Context context, Handler handler,
      WakeLock wakeLock) {
    super(settings, surfaceHolder, context, handler);

    this.mWakeLock = wakeLock;

    mAlarmMgr = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
  }

  @Override
  public void stop() {
    if (mContext != null && mAlarmMgr != null) {
      Intent intent = new Intent(mContext, PowerSavingReceiver.class);
      PendingIntent alarmIntent = PendingIntent.getBroadcast(mContext, 0,
          intent, 0);
      mAlarmMgr.cancel(alarmIntent);
      mAlarmMgr = null;
    }

    super.stop();
  }

  protected void scheduleNextPicture() {
    if (mContext != null && mAlarmMgr != null) {
      Intent intent = new Intent(mContext, PowerSavingReceiver.class);
      PendingIntent alarmIntent = PendingIntent.getBroadcast(mContext, 0,
          intent, 0);

      long diffTime = SystemClock.elapsedRealtime() - mStartPreviewTime;
      long delay = mSettings.getCaptureRate() - diffTime;
      if (delay < 0)
        delay = 0;

      mAlarmMgr.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
          SystemClock.elapsedRealtime() + delay, alarmIntent);
    }

    disableOrientationSensor();
    releaseCamera();
    unmuteShutter();

    mWakeLock.release();
  }
}

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