/*
 *  IntervalMean
 *
 *  Author: Andrew Salamon
 *
 *  Copyright (c) 2008 Machine Perception Laboratory
 *  University of California San Diego.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
 *    3. The name of the author may not be used to endorse or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#ifndef __CERT_INTERVALMEANPLLUGIN_H__
#define __CERT_INTERVALMEANPLLUGIN_H__

#include <string>
#include <vector>
#include <iostream>
#include <deque>

#include "PluginBase.h"
#include "AfterFacePlugin.h"
#include "rimage.h"

namespace CERT
{

class ConfigItem;

/** A simple plugin for detecting AU intervals in a sequence of images.
 * The plugin stores a window sized history of AU outputs and calculates the mean of each AU over that interval.
 * The output of this plugin for each frame is a measure of the likelihood that each AU
 *   was present in the preceding interval.
 */
class IntervalMean : public AfterFacePlugin
{
public:
    IntervalMean( ConfigItem *_config );
    virtual ~IntervalMean();

    virtual PluginBase *copy();

    virtual std::vector<std::string> getLabels() const { return labels; }
    virtual std::string invalidResultsString() const { return nans; }

    virtual void processImageUsingCert( RImage<float> &image, MP_CERT &cert );
    virtual bool areResultsValid();
    virtual double getResultsDouble();

private:
    unsigned int window;
    std::vector< std::deque<double> > storage;
    std::vector< double > runningTotals;
    std::vector<std::string> labels;
    std::string nans;
};

} // end namespace CERT
#endif // __CERT_INTERVALMEANPLLUGIN_H__