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/* Base type for supported image formats. Subclass this to add a new
* format.
*/
/*
This file is part of VIPS.
VIPS 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 of the License, or
(at your option) any later version.
This program 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 program; 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_FORMAT_H
#define VIPS_FORMAT_H
#ifdef __cplusplus
extern "C" {
#endif /*__cplusplus*/
#define VIPS_TYPE_FORMAT (vips_format_get_type())
#define VIPS_FORMAT(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), \
VIPS_TYPE_FORMAT, VipsFormat))
#define VIPS_FORMAT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), \
VIPS_TYPE_FORMAT, VipsFormatClass))
#define VIPS_IS_FORMAT(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), VIPS_TYPE_FORMAT))
#define VIPS_IS_FORMAT_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), VIPS_TYPE_FORMAT))
#define VIPS_FORMAT_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS((obj), \
VIPS_TYPE_FORMAT, VipsFormatClass))
/* Image file properties.
*/
typedef enum {
VIPS_FORMAT_NONE = 0, /* No flags set */
VIPS_FORMAT_PARTIAL = 1, /* Lazy read OK (eg. tiled tiff) */
VIPS_FORMAT_BIGENDIAN = 2 /* Most-significant byte first */
} VipsFormatFlags;
/* Don't instantiate these things, just use the class stuff.
*/
typedef struct _VipsFormat {
VipsObject parent_object;
/*< public >*/
} VipsFormat;
typedef struct _VipsFormatClass {
VipsObjectClass parent_class;
/*< public >*/
/* Is a file in this format.
*/
gboolean (*is_a)(const char *filename);
/* Read just the header into the VipsImage.
*/
int (*header)(const char *filename, VipsImage *image);
/* Load the whole image.
*/
int (*load)(const char *filename, VipsImage *image);
/* Write the VipsImage to the file in this format.
*/
int (*save)(VipsImage *image, const char *filename);
/* Get the flags for this file in this format.
*/
VipsFormatFlags (*get_flags)(const char *filename);
/* Loop over formats in this order, default 0. We need this because
* some formats can be read by several loaders (eg. tiff can be read
* by the libMagick loader as well as by the tiff loader), and we want
* to make sure the better loader comes first.
*/
int priority;
/* Null-terminated list of allowed suffixes, eg. ".tif", ".tiff".
*/
const char **suffs;
} VipsFormatClass;
VIPS_API
GType vips_format_get_type(void);
/* Map over and find formats. This uses type introspection to loop over
* subclasses of VipsFormat.
*/
VIPS_API
void *vips_format_map(VipsSListMap2Fn fn, void *a, void *b);
VIPS_API
VipsFormatClass *vips_format_for_file(const char *filename);
VIPS_API
VipsFormatClass *vips_format_for_name(const char *filename);
VIPS_API
VipsFormatFlags vips_format_get_flags(VipsFormatClass *format,
const char *filename);
/* Read/write an image convenience functions.
*/
VIPS_API
int vips_format_read(const char *filename, VipsImage *out);
VIPS_API
int vips_format_write(VipsImage *in, const char *filename);
#ifdef __cplusplus
}
#endif /*__cplusplus*/
#endif /*VIPS_FORMAT_H*/