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/* base class for all resample operations
*
* properties:
* - one in, one out
* - not point-to-point
* - size can change in any way
* - bands, type, format etc. all fixed
*/
/*
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 "presample.h"
/**
* VipsSize:
* @VIPS_SIZE_BOTH: size both up and down
* @VIPS_SIZE_UP: only upsize
* @VIPS_SIZE_DOWN: only downsize
* @VIPS_SIZE_FORCE: force size, that is, break aspect ratio
*
* Controls whether an operation should upsize, downsize, both up and
* downsize, or force a size.
*
* ::: seealso
* [ctor@Image.thumbnail].
*/
G_DEFINE_ABSTRACT_TYPE(VipsResample, vips_resample, VIPS_TYPE_OPERATION);
static int
vips_resample_build(VipsObject *object)
{
VipsResample *resample = VIPS_RESAMPLE(object);
#ifdef DEBUG
printf("vips_resample_build: ");
vips_object_print_name(object);
printf("\n");
#endif /*DEBUG*/
g_object_set(resample, "out", vips_image_new(), NULL);
if (VIPS_OBJECT_CLASS(vips_resample_parent_class)->build(object))
return -1;
return 0;
}
static void
vips_resample_class_init(VipsResampleClass *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 = "resample";
vobject_class->description = _("resample operations");
vobject_class->build = vips_resample_build;
VIPS_ARG_IMAGE(class, "in", 1,
_("Input"),
_("Input image argument"),
VIPS_ARGUMENT_REQUIRED_INPUT,
G_STRUCT_OFFSET(VipsResample, in));
VIPS_ARG_IMAGE(class, "out", 2,
_("Output"),
_("Output image"),
VIPS_ARGUMENT_REQUIRED_OUTPUT,
G_STRUCT_OFFSET(VipsResample, out));
}
static void
vips_resample_init(VipsResample *resample)
{
}
/* Called from iofuncs to init all operations in this dir. Use a plugin system
* instead?
*/
void
vips_resample_operation_init(void)
{
extern GType vips_thumbnail_file_get_type(void);
extern GType vips_thumbnail_buffer_get_type(void);
extern GType vips_thumbnail_image_get_type(void);
extern GType vips_thumbnail_source_get_type(void);
extern GType vips_mapim_get_type(void);
extern GType vips_shrink_get_type(void);
extern GType vips_shrinkh_get_type(void);
extern GType vips_shrinkv_get_type(void);
extern GType vips_reduce_get_type(void);
extern GType vips_reduceh_get_type(void);
extern GType vips_reducev_get_type(void);
extern GType vips_quadratic_get_type(void);
extern GType vips_affine_get_type(void);
extern GType vips_similarity_get_type(void);
extern GType vips_rotate_get_type(void);
extern GType vips_resize_get_type(void);
vips_thumbnail_file_get_type();
vips_thumbnail_buffer_get_type();
vips_thumbnail_image_get_type();
vips_thumbnail_source_get_type();
vips_mapim_get_type();
vips_shrink_get_type();
vips_shrinkh_get_type();
vips_shrinkv_get_type();
vips_reduceh_get_type();
vips_reducev_get_type();
vips_reduce_get_type();
vips_quadratic_get_type();
vips_affine_get_type();
vips_similarity_get_type();
vips_rotate_get_type();
vips_resize_get_type();
}
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