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/* base class for all unary operations
*
* 30/10/11
* - from binary.c
*/
/*
Copyright (C) 1991-2005 The National Gallery
This library 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 2.1 of the License, or (at your option) any later version.
This library 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 library; 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
*/
/*
#define DEBUG
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <glib/gi18n-lib.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <vips/vips.h>
#include "unary.h"
G_DEFINE_ABSTRACT_TYPE( VipsUnary, vips_unary, VIPS_TYPE_ARITHMETIC );
static int
vips_unary_build( VipsObject *object )
{
VipsArithmetic *arithmetic = VIPS_ARITHMETIC( object );
VipsUnary *unary = VIPS_UNARY( object );
arithmetic->n = 1;
arithmetic->in = (VipsImage **) vips_object_local_array( object, 1 );
arithmetic->in[0] = unary->in;
if( arithmetic->in[0] )
g_object_ref( arithmetic->in[0] );
if( VIPS_OBJECT_CLASS( vips_unary_parent_class )->build( object ) )
return( -1 );
return( 0 );
}
static void
vips_unary_class_init( VipsUnaryClass *class )
{
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
gobject_class->set_property = vips_object_set_property;
gobject_class->get_property = vips_object_get_property;
vobject_class->nickname = "unary";
vobject_class->description = _( "unary operations" );
vobject_class->build = vips_unary_build;
/* Create properties.
*/
VIPS_ARG_IMAGE( class, "in", 1,
_( "Input" ),
_( "Input image" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsUnary, in ) );
}
static void
vips_unary_init( VipsUnary *unary )
{
/* Init our instance fields.
*/
}
/* Call this before chaining up in _build() to make the operation fall back to
* copy.
*/
int
vips_unary_copy( VipsUnary *unary )
{
VipsArithmetic *arithmetic = VIPS_ARITHMETIC( unary );
/* This isn't set by arith until build(), so we have to set
* again here.
*
* Should arith set out in _init()?
*/
g_object_set( unary, "out", vips_image_new(), NULL );
return( vips_image_write( unary->in, arithmetic->out ) );
}
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