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/* base class for all histogram operations
*
* many hists in, one hist out, a buffer processing function in the class
*/
/*
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_PHISTOGRAM_H
#define VIPS_PHISTOGRAM_H
#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/
#define VIPS_TYPE_HISTOGRAM (vips_histogram_get_type())
#define VIPS_HISTOGRAM(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), \
VIPS_TYPE_HISTOGRAM, VipsHistogram))
#define VIPS_HISTOGRAM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), \
VIPS_TYPE_HISTOGRAM, VipsHistogramClass))
#define VIPS_IS_HISTOGRAM(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), VIPS_TYPE_HISTOGRAM))
#define VIPS_IS_HISTOGRAM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), VIPS_TYPE_HISTOGRAM))
#define VIPS_HISTOGRAM_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS((obj), \
VIPS_TYPE_HISTOGRAM, VipsHistogramClass))
typedef struct _VipsHistogram VipsHistogram;
typedef void (*VipsHistogramProcessFn)(VipsHistogram *histogram,
VipsPel *out, VipsPel **in, int width);
struct _VipsHistogram {
VipsOperation parent_instance;
VipsImage *out;
/* NULL-terminated array of input images.
*/
VipsImage **in;
int n;
/* ... and transformed ready for processing.
*/
VipsImage **ready;
};
typedef struct _VipsHistogramClass {
VipsOperationClass parent_class;
/* For each input format, what output format.
*/
const VipsBandFormat *format_table;
/* If not VIPS_FORMAT_NOTSET, upcast all ins to this.
*/
VipsBandFormat input_format;
VipsHistogramProcessFn process;
} VipsHistogramClass;
GType vips_histogram_get_type(void);
#ifdef __cplusplus
}
#endif /*__cplusplus*/
#endif /*VIPS_PHISTOGRAM_H*/
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