| /* im_image.c ... area of memory as an image |
| * |
| * Written on: 11/7/00 |
| * Modified on: |
| * 20/3/01 JC |
| * - oops, broken for IM_BANDFMT_UCHAR |
| */ |
| |
| /* |
| |
| 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> |
| #include <vips/internal.h> |
| |
| #ifdef WITH_DMALLOC |
| #include <dmalloc.h> |
| #endif /*WITH_DMALLOC*/ |
| |
| /** |
| * im_image: |
| * @buffer: start of memory area |
| * @xsize: image width |
| * @ysize: image height |
| * @bands: image bands (or bytes per pixel) |
| * @bandfmt: image format |
| * |
| * This function wraps an #IMAGE around a memory buffer. VIPS does not take |
| * responsibility for the area of memory, it's up to you to make sure it's |
| * freed when the image is closed. See for example im_add_close_callback(). |
| * |
| * See also: im_binfile(), im_raw2vips(), im_open(). |
| * |
| * Returns: the new #IMAGE, or %NULL on error. |
| */ |
| IMAGE * |
| im_image( void *buffer, int width, int height, int bands, VipsBandFmt bandfmt ) |
| { |
| IMAGE *im; |
| |
| if( width <= 0 || height <= 0 || bands <= 0 || |
| bandfmt < 0 || bandfmt > IM_BANDFMT_DPCOMPLEX ) { |
| im_error( "im_image", "%s", _( "bad parameters" ) ); |
| return( NULL ); |
| } |
| |
| /* Make new output image for us. |
| */ |
| if( !(im = im_init( "untitled" )) ) |
| return( NULL ); |
| |
| /* Set header fields. |
| */ |
| im->Xsize = width; |
| im->Ysize = height; |
| im->Bands = bands; |
| im->BandFmt = bandfmt; |
| im->Bbits = im_bits_of_fmt( bandfmt ); |
| im->Coding = IM_CODING_NONE; |
| |
| if( bands == 1 ) |
| im->Type = IM_TYPE_B_W; |
| else if( bands == 3 ) |
| im->Type = IM_TYPE_RGB; |
| else |
| im->Type = IM_TYPE_MULTIBAND; |
| |
| im->data = (char *) buffer; |
| im->dtype = IM_SETBUF_FOREIGN; |
| |
| return( im ); |
| } |