| /* im_disp_ps |
| * |
| * Copyright: 1991, N. Dessipris. |
| * |
| * Author: Nicos Dessipris |
| * Written on: 27/03/1991 |
| * Modified on : |
| * 16/6/93 J.Cupitt |
| * - im_ioflag() changed to im_iocheck() |
| * 23/2/95 JC |
| * - rewritten for partials |
| * 10/9/98 JC |
| * - frees memory more quickly |
| * 2/4/02 JC |
| * - any number of bands |
| * 7/2/10 |
| * - 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 <math.h> |
| |
| #include <vips/vips.h> |
| |
| #ifdef WITH_DMALLOC |
| #include <dmalloc.h> |
| #endif /*WITH_DMALLOC*/ |
| |
| static int |
| disp_ps( IMAGE *dummy, IMAGE *in, IMAGE *out ) |
| { |
| IMAGE *t[3]; |
| |
| if( im_open_local_array( out, t, 3, "im_disp_ps temp 1", "p" ) ) |
| return( -1 ); |
| |
| if( in->BandFmt != IM_BANDFMT_COMPLEX ) { |
| if( im_fwfft( in, t[0] ) ) |
| return( -1 ); |
| in = t[0]; |
| } |
| |
| if( im_abs( in, t[1] ) || |
| im_scaleps( t[1], t[2] ) || |
| im_rotquad( t[2], out ) ) |
| return( -1 ); |
| |
| return( 0 ); |
| } |
| |
| /** |
| * im_disp_ps: |
| * @in: input image |
| * @out: output image |
| * |
| * Make a displayable (ie. 8-bit unsigned int) power spectrum. |
| * |
| * If @in is non-complex, it is transformed to Fourier space. Then the |
| * absolute value is passed through im_scaleps(), and im_rotquad(). |
| * |
| * See also: im_scaleps(), im_rotquad(). |
| * |
| * Returns: 0 on success, -1 on error. |
| */ |
| int |
| im_disp_ps( IMAGE *in, IMAGE *out ) |
| { |
| IMAGE *dummy; |
| |
| if( !(dummy = im_open( "memory:1", "p" )) ) |
| return( -1 ); |
| if( disp_ps( dummy, in, out ) ) { |
| im_close( dummy ); |
| return( -1 ); |
| } |
| im_close( dummy ); |
| |
| return( 0 ); |
| } |
