/* @(#)  Generalised addition of two vasari images  using the routines
 * @(#) im_gaddim or im_gfadd
 * @(#) Convention to ease the complilation time.
 * @(#) Function im_gadd() assumes that the both input files
 * @(#) are either memory mapped or in a buffer.
 * @(#) Images must have the same no of bands and must not be complex
 * @(#)  No check for overflow is carried out.
 * @(#)
 * @(#) int im_gadd(a, in1, b, in2, c, out)
 * @(#) IMAGE *in1, *in2, *out;
 * @(#) double a, b, c;
 * @(#)
 * @(#) Returns 0 on success and -1 on error
 * @(#)
 *
 * Copyright: 1990, N. Dessipris.
 *
 * Author: Nicos Dessipris
 * Written on: 02/05/1990
 * Modified on:
 */

/*

	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 <assert.h>

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

int im_gfadd(double a, IMAGE *in1, double b, IMAGE *in2, double c, IMAGE *out);
int im_gaddim(double a, IMAGE *in1, double b, IMAGE *in2, double c, IMAGE *out);

/* This function works on either mmaped files or on images in buffer
 */

/**
 * im_gadd:
 *
 * Deprecated.
 */
int
im_gadd(double a, IMAGE *in1, double b, IMAGE *in2, double c, IMAGE *out)
{
	int flagint = 0;
	int flagfloat = 0;
	int value = 0;

	switch (in1->BandFmt) {
	case IM_BANDFMT_UCHAR:
	case IM_BANDFMT_CHAR:
	case IM_BANDFMT_USHORT:
	case IM_BANDFMT_SHORT:
	case IM_BANDFMT_UINT:
	case IM_BANDFMT_INT:
		flagint = 1;
		break;
	case IM_BANDFMT_FLOAT:
	case IM_BANDFMT_DOUBLE:
		flagfloat = 1;
		break;
	default:
		im_error("im_gadd", "%s", _("Unable to accept image1"));
		return -1;
	}
	switch (in2->BandFmt) {
	case IM_BANDFMT_UCHAR:
	case IM_BANDFMT_CHAR:
	case IM_BANDFMT_USHORT:
	case IM_BANDFMT_SHORT:
	case IM_BANDFMT_UINT:
	case IM_BANDFMT_INT:
		flagint = 1;
		break;
	case IM_BANDFMT_FLOAT:
	case IM_BANDFMT_DOUBLE:
		flagfloat = 1;
		break;
	default:
		im_error("im_gadd", "%s", _("Unable to accept image1"));
		return -1;
	}
	/* Select output routines */
	if (flagfloat == 1) {
		value = im_gfadd(a, in1, b, in2, c, out);
		if (value == -1)
			return -1;
	}
	else if (flagint == 1) {
		value = im_gaddim(a, in1, b, in2, c, out);
		if (value == -1)
			return -1;
	}
	else
		assert(0);

	return 0;
}
