/*------------------------------------------------------------------------------------------*\
   This file contains material supporting chapter 10 of the cookbook:  
   Computer Vision Programming using the OpenCV Library. 
   by Robert Laganiere, Packt Publishing, 2011.

   This program is free software; permission is hereby granted to use, copy, modify, 
   and distribute this source code, or portions thereof, for any purpose, without fee, 
   subject to the restriction that the copyright notice may not be removed 
   or altered from any source or altered source distribution. 
   The software is released on an as-is basis and without any warranties of any kind. 
   In particular, the software is not guaranteed to be fault-tolerant or free from failure. 
   The author disclaims all warranties with regard to this software, any use, 
   and any consequent failure, is purely the responsibility of the user.
 
   Copyright (C) 2010-2011 Robert Laganiere, www.laganiere.name
\*------------------------------------------------------------------------------------------*/

#include <iostream>
#include <opencv2/core/core.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/video/background_segm.hpp>

#include "videoprocessor.h"
#include "BGFGSegmentor.h"

int main()
{
	// Open the video file
    cv::VideoCapture capture("../bike.avi");
	// check if video successfully opened
	if (!capture.isOpened())
		return 0;

	// current video frame
	cv::Mat frame; 
	// foreground binary image
	cv::Mat foreground;

	cv::namedWindow("Extracted Foreground");

	// The Mixture of Gaussian object
	// used with all default parameters
	cv::BackgroundSubtractorMOG mog;

	bool stop(false);
	// for all frames in video
	while (!stop) {

		// read next frame if any
		if (!capture.read(frame))
			break;

		// update the background
		// and return the foreground
		mog(frame,foreground,0.01);

		// Complement the image
		cv::threshold(foreground,foreground,128,255,cv::THRESH_BINARY_INV);

		// show foreground
		cv::imshow("Extracted Foreground",foreground);

		// introduce a delay
		// or press key to stop
		if (cv::waitKey(10)>=0)
				stop= true;
	}

	cv::waitKey();

	// Create video procesor instance
	VideoProcessor processor;

	// Create background/foreground segmentor 
	BGFGSegmentor segmentor;
	segmentor.setThreshold(25);

	// Open video file
	processor.setInput("../bike.avi");

	// set frame processor
	processor.setFrameProcessor(&segmentor);

	// Declare a window to display the video
	processor.displayOutput("Extracted Foreground");

	// Play the video at the original frame rate
	processor.setDelay(1000./processor.getFrameRate());

	// Start the process
	processor.run();

	cv::waitKey();
}