/*
    Copyright (C) 2015 Carl Hetherington <cth@carlh.net>

    This file is part of libdcp.

    libdcp 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 2 of the License, or
    (at your option) any later version.

    libdcp 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 libdcp.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "data.h"
#include "test.h"
#include "util.h"
#include "version.h"
#include "j2k.h"
#include "openjpeg_image.h"
#include <sys/time.h>
#include <iostream>
#include <cstdio>

using std::cout;
using std::cerr;
using boost::shared_ptr;

class Timer
{
public:
	Timer ()
		: _total (0)
	{

	}

	void start ()
	{
		gettimeofday (&_start, 0);
	}

	void stop ()
	{
		struct timeval stop;
		gettimeofday (&stop, 0);
		_total += (stop.tv_sec + stop.tv_usec / 1e6) - (_start.tv_sec + _start.tv_usec / 1e6);
	}

	double get ()
	{
		return _total;
	}

private:
	double _total;
	struct timeval _start;
};

/** Run some basic benchmarks of JPEG2000 encoding / decoding */
int
main (int argc, char* argv[])
{
	if (argc < 2) {
		cerr << "Syntax: " << argv[0] << " private-test-path\n";
		exit (EXIT_FAILURE);
	}

	int const count = 100;
	int const j2k_bandwidth = 100000000;

	dcp::Data j2k (boost::filesystem::path (argv[1]) / "thx.j2c");

	Timer decompress;
	Timer compress;

	dcp::Data recomp;
	for (int i = 0; i < count; ++i) {
		decompress.start ();
		shared_ptr<dcp::OpenJPEGImage> xyz = dcp::decompress_j2k (j2k, 0);
		decompress.stop ();
		compress.start ();
		recomp = dcp::compress_j2k (xyz, j2k_bandwidth, 24, false, false);
		compress.stop ();
		cout << (i + 1) << " ";
		cout.flush ();
	}
	cout << "\n";

	cout << "Decompress: " << count / decompress.get() << " fps.\n";
	cout << "Compress:   " << count / compress.get() << " fps.\n";

	FILE* f = fopen ("check.j2c", "wb");
	fwrite (recomp.data().get(), 1, recomp.size(), f);
	fclose (f);
}