main.c

/* slideextract -- extract slides from video
 *
 * Copyright (c) 2013, Angelo Haller <angelo@szanni.org>
 * All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
 */

#include "slideextract.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdbool.h>

//! Print version and exit program
static void
version ()
{
	puts("slideextract " VERSION);

	exit (0);
}

//! Print help and exit program
static void
help()
{
	puts ("Usage: slideextract [OPTION] infile outprefix\n\
\n\
Extract slides from video.\n\
\n\
  -g          Launch gui to set comparison region, press any key when done\n\
  -r X.Y:WxH  Manually set comparison region by specifying a starting point X.Y\n\
              and width & height WxH\n\
\n\
  -h  Display this help and exit\n\
  -V  Output version information and exit\n\
\n\
Select a comparision region (e.g. slide number) for faster and more\n\
accurate extraction.\n");

	exit (0);
}

int
main (int argc, char **argv)
{
	struct roi roi;
	bool gflag = 0;
	bool rflag = 0;
	int c;
	int ret;

	while ((c = getopt(argc, argv, "gr:Vh")) != -1) {
		switch (c) {
			case 'g':
				gflag = 1;
				break;

			case 'r':
				rflag = 1;
				if (sscanf(optarg, "%d.%d:%dx%d", &roi.x, &roi.y, &roi.width, &roi.height) != 4)
					help();
				break;

			case 'V':
				version();
				break;

			case 'h':
			case '?':
			default:
				help();
		}
	}
	argc -= optind;
	argv += optind;

	if (argc != 2 || (gflag && rflag))
		help();

	const char *file = *argv++;
	const char *outprefix = *argv;

	if (rflag)
		return se_extract_slides(file, outprefix, &roi);

	if (gflag)
	{
		if ((ret = se_select_roi(file, &roi)))
			return ret;

		printf("Selected ROI: %d.%d:%dx%d\n", roi.x, roi.y, roi.width, roi.height);
		return se_extract_slides(file, outprefix, &roi);
	}

	return se_extract_slides(file, outprefix, NULL);
}