libvips/libvips/histogram/hist_unary.c

100 lines
2.4 KiB
C

/* a hist operation implemented as a unary processor
*
* properties:
* - single hist to single hist
*/
/*
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 <vips/internal.h>
#include "phistogram.h"
#include "hist_unary.h"
G_DEFINE_ABSTRACT_TYPE( VipsHistUnary, vips_hist_unary, VIPS_TYPE_HISTOGRAM );
static int
vips_hist_unary_build( VipsObject *object )
{
VipsHistogram *histogram = VIPS_HISTOGRAM( object );
VipsHistUnary *unary = VIPS_HIST_UNARY( object );
histogram->n = 1;
histogram->in = (VipsImage **) vips_object_local_array( object, 1 );
histogram->in[0] = unary->in;
if( histogram->in[0] )
g_object_ref( histogram->in[0] );
if( VIPS_OBJECT_CLASS( vips_hist_unary_parent_class )->
build( object ) )
return( -1 );
return( 0 );
}
static void
vips_hist_unary_class_init( VipsHistUnaryClass *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 = "hist_unary";
vobject_class->description = _( "hist_unary operations" );
vobject_class->build = vips_hist_unary_build;
VIPS_ARG_IMAGE( class, "in", 1,
_( "Input" ),
_( "Input image" ),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET( VipsHistUnary, in ) );
}
static void
vips_hist_unary_init( VipsHistUnary *hist_unary )
{
}