119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
/* base class for all unary operations
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*
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* 30/10/11
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* - from binary.c
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*/
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/*
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Copyright (C) 1991-2005 The National Gallery
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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/*
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#define DEBUG
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <glib/gi18n-lib.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <vips/vips.h>
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#include "unary.h"
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G_DEFINE_ABSTRACT_TYPE( VipsUnary, vips_unary, VIPS_TYPE_ARITHMETIC );
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static int
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vips_unary_build( VipsObject *object )
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{
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VipsArithmetic *arithmetic = VIPS_ARITHMETIC( object );
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VipsUnary *unary = VIPS_UNARY( object );
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arithmetic->n = 1;
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arithmetic->in = (VipsImage **) vips_object_local_array( object, 1 );
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arithmetic->in[0] = unary->in;
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if( arithmetic->in[0] )
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g_object_ref( arithmetic->in[0] );
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if( VIPS_OBJECT_CLASS( vips_unary_parent_class )->build( object ) )
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return( -1 );
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return( 0 );
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}
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static void
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vips_unary_class_init( VipsUnaryClass *class )
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
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gobject_class->set_property = vips_object_set_property;
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gobject_class->get_property = vips_object_get_property;
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vobject_class->nickname = "unary";
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vobject_class->description = _( "unary operations" );
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vobject_class->build = vips_unary_build;
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/* Create properties.
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*/
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VIPS_ARG_IMAGE( class, "in", 1,
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_( "Input" ),
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_( "Input image" ),
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VIPS_ARGUMENT_REQUIRED_INPUT,
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G_STRUCT_OFFSET( VipsUnary, in ) );
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}
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static void
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vips_unary_init( VipsUnary *unary )
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{
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/* Init our instance fields.
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*/
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}
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/* Call this before chaining up in _build() to make the operation fall back to
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* copy.
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*/
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int
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vips_unary_copy( VipsUnary *unary )
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{
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VipsArithmetic *arithmetic = VIPS_ARITHMETIC( unary );
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/* This isn't set by arith until build(), so we have to set
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* again here.
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*
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* Should arith set out in _init()?
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*/
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g_object_set( unary, "out", vips_image_new(), NULL );
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return( vips_image_write( unary->in, arithmetic->out ) );
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}
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