| /* im_tbjoin |
| * |
| * Copyright: 1990, 1991 Kirk Martinez, N. Dessipris |
| * Author: Kirk Martinez, N. Dessipris |
| * Written on: 9/6/90 |
| * Updated: 15/03/1991, N. Dessipris |
| * 31/8/93 JC |
| * - externs removed |
| * 14/11/94 JC |
| * - tidied up |
| * - now works for IM_CODING_LABQ too |
| * - image compatibility bug fixed |
| * 28/4/95 JC |
| * - y arg to 2nd set of im_writeline()s was wrong |
| * 23/10/95 JC |
| * - rewritten in terms of im_insert() |
| * 14/4/04 |
| * - sets Xoffset / Yoffset |
| * 1/2/10 |
| * - gtkdoc |
| * - cleanups |
| */ |
| |
| /* |
| |
| 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 <vips/intl.h> |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include <vips/vips.h> |
| |
| #ifdef WITH_DMALLOC |
| #include <dmalloc.h> |
| #endif /*WITH_DMALLOC*/ |
| |
| /** |
| * im_tbjoin: |
| * @top: image to go on top |
| * @bottom: image to go on bottom |
| * @out: output image |
| * |
| * Join @top and @bottom together, up-down. If one is wider than the |
| * other, @out will be has wide as the smaller. |
| * |
| * If the number of bands differs, one of the images |
| * must have one band. In this case, an n-band image is formed from the |
| * one-band image by joining n copies of the one-band image together, and then |
| * the two n-band images are operated upon. |
| * |
| * The two input images are cast up to the smallest common type (see table |
| * Smallest common format in |
| * <link linkend="VIPS-arithmetic">arithmetic</link>). |
| * |
| * See also: im_insert(), im_tbjoin(). |
| * |
| * Returns: 0 on success, -1 on error |
| */ |
| int |
| im_tbjoin( IMAGE *top, IMAGE *bottom, IMAGE *out ) |
| { |
| IMAGE *t1; |
| |
| /* Paste top and bottom together, cut off any leftovers. |
| */ |
| if( !(t1 = im_open_local( out, "im_tbjoin:1", "p" )) || |
| im_insert( top, bottom, t1, 0, top->Ysize ) || |
| im_extract_area( t1, out, |
| 0, 0, IM_MIN( top->Xsize, bottom->Xsize ), t1->Ysize ) ) |
| return( -1 ); |
| |
| out->Xoffset = 0; |
| out->Yoffset = top->Ysize; |
| |
| return( 0 ); |
| } |
