| /* im_black.c |
| * |
| * Copyright: 1990, J. Cupitt |
| * |
| * Author: J. Cupitt |
| * Written on: 02/08/1990 |
| * Modified on : 16/04/1991 by N. Dessipris to work on a line by line basis |
| * 15/8/94 JC |
| * - adapted for partials |
| * - ANSIfied |
| * - memory leaks fixed! |
| * 2/3/98 JC |
| * - IM_ANY added |
| * 18/1/09 |
| * - gtkdoc |
| */ |
| |
| /* |
| |
| 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 <string.h> |
| |
| #include <vips/vips.h> |
| #include <vips/internal.h> |
| |
| #ifdef WITH_DMALLOC |
| #include <dmalloc.h> |
| #endif /*WITH_DMALLOC*/ |
| |
| /* Generate function --- just black out the region. |
| */ |
| static int |
| black_gen( REGION *or, void *seq, void *a, void *b ) |
| { |
| im_region_black( or ); |
| |
| return( 0 ); |
| } |
| |
| /** |
| * im_black: |
| * @out: output #IMAGE |
| * @x: output width |
| * @y: output height |
| * @bands: number of output bands |
| * |
| * Make a black unsigned char image of a specified size. |
| * |
| * See also: im_make_xy(), im_text(), im_gaussnoise(). |
| * |
| * Returns: 0 on success, -1 on error |
| */ |
| int |
| im_black( IMAGE *out, int x, int y, int bands ) |
| { |
| if( x <= 0 || y <= 0 || bands <= 0 ) { |
| im_error( "im_black", "%s", _( "bad parameter" ) ); |
| return( -1 ); |
| } |
| |
| if( im_poutcheck( out ) ) |
| return( -1 ); |
| im_initdesc( out, |
| x, y, bands, |
| IM_BBITS_BYTE, IM_BANDFMT_UCHAR, IM_CODING_NONE, |
| bands == 1 ? IM_TYPE_B_W : IM_TYPE_MULTIBAND, |
| 1.0, 1.0, 0, 0 ); |
| if( im_demand_hint( out, IM_ANY, NULL ) ) |
| return( -1 ); |
| |
| if( im_generate( out, NULL, black_gen, NULL, NULL, NULL ) ) |
| return( -1 ); |
| |
| return( 0 ); |
| } |
