/* @(#) Extract a tile from a pyramid as a jpeg
 * @(#)
 * @(#) int
 * @(#) im_bernd(const char *tiffname,
 * @(#) 	int x, int y, int w, int h)
 * @(#)
 * @(#)
 * @(#) Returns 0 on success and -1 on error
 * @(#)
 *
 * 7/5/99 JC
 *	- from im_tiff2vips and im_vips2jpeg, plus some stuff from Steve
 * 11/7/01 JC
 *	- page number now in filename
 * 12/5/09
 *	- fix signed/unsigned warning
 */

/*

	This file is part of VIPS.

	VIPS is free software; you can redistribute it and/or modify
	it under the terms of the GNU Lesser General Public License as published by
	the Free Software Foundation; either version 2 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 Lesser General Public License for more details.

	You should have received a copy of the GNU Lesser General Public License
	along with this program; if not, write to the Free Software
	Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	02110-1301  USA

 */

/*

	These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk

 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <glib/gi18n-lib.h>

#include <stdio.h>
#include <stdlib.h>

#include <vips/vips.h>
#include <vips/vips7compat.h>

static int
extract(IMAGE *in, int x, int y, int w, int h)
{
	IMAGE *t1;
	int len;
	char *buf;

	if (!(t1 = im_open_local(in, "im_bernd:2", "p")) ||
		im_extract_area(in, t1, x, y, w, h) ||
		im_vips2bufjpeg(t1, in, 75, &buf, &len))
		return -1;

	if (fwrite(buf, sizeof(char), len, stdout) != (size_t) len) {
		im_error("im_bernd", "%s", _("error writing output"));
		return -1;
	}
	fflush(stdout);

	return 0;
}

int
im_bernd(const char *tiffname, int x, int y, int w, int h)
{
	IMAGE *in;

	if (!(in = im_open("im_bernd:1", "p")))
		return -1;
	if (im_tiff2vips(tiffname, in) ||
		extract(in, x, y, w, h)) {
		im_close(in);
		return -1;
	}
	im_close(in);

	return 0;
}
