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/* base class for all resample operations
*/
/*
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
*/
#ifndef VIPS_PRESAMPLE_H
#define VIPS_PRESAMPLE_H
#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/
#define VIPS_TYPE_RESAMPLE (vips_resample_get_type())
#define VIPS_RESAMPLE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), \
VIPS_TYPE_RESAMPLE, VipsResample))
#define VIPS_RESAMPLE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), \
VIPS_TYPE_RESAMPLE, VipsResampleClass))
#define VIPS_IS_RESAMPLE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), VIPS_TYPE_RESAMPLE))
#define VIPS_IS_RESAMPLE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), VIPS_TYPE_RESAMPLE))
#define VIPS_RESAMPLE_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS((obj), \
VIPS_TYPE_RESAMPLE, VipsResampleClass))
typedef struct _VipsResample {
VipsOperation parent_instance;
VipsImage *in;
VipsImage *out;
} VipsResample;
typedef struct _VipsResampleClass {
VipsOperationClass parent_class;
} VipsResampleClass;
GType vips_resample_get_type(void);
/* The max size of the vector we use.
*/
#define MAX_POINT (2000)
int vips_reduce_get_points(VipsKernel kernel, double shrink);
void vips_reduceh_uchar_hwy(VipsPel *pout, VipsPel *pin,
int n, int width, int bands,
short *restrict cs[VIPS_TRANSFORM_SCALE + 1],
double X, double hshrink);
void vips_reducev_uchar_hwy(VipsPel *pout, VipsPel *pin,
int n, int ne, int lskip, const short *restrict k);
void vips_shrinkh_uchar_hwy(VipsPel *pout, VipsPel *pin,
int width, int hshrink, int bands);
void vips_shrinkv_add_line_uchar_hwy(VipsPel *pin,
int ne, unsigned int *restrict sum);
void vips_shrinkv_write_line_uchar_hwy(VipsPel *pout,
int ne, int vshrink, unsigned int *restrict sum);
#ifdef __cplusplus
}
#endif /*__cplusplus*/
#endif /*VIPS_PRESAMPLE_H*/
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