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/*------------------------------------------------------------------------
* Copyright 2012 (c) Jarek Czekalski <jarekczek@poczta.onet.pl>
*
* This file is part of the ZBar Bar Code Reader.
*
* The ZBar Bar Code Reader is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* The ZBar Bar Code Reader 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 Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with the ZBar Bar Code Reader; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* http://sourceforge.net/projects/zbar
*------------------------------------------------------------------------*/
#ifndef _MISC_H_
#define _MISC_H_
struct resolution_s {
long cx;
long cy;
};
typedef struct resolution_s resolution_t;
struct resolution_list_s {
resolution_t *resolutions;
long cnt;
};
typedef struct resolution_list_s resolution_list_t;
void resolution_list_init(resolution_list_t *list);
void resolution_list_cleanup(resolution_list_t *list);
void resolution_list_add(resolution_list_t *list, resolution_t *resolution);
/// Fill <code>resolution</code> with the closest resolution found in
/// <code>list</code>.
/** If <code>list</code> is empty,
* the <code>resolution</code> is unchanged.
* If <code>resolution</code> is empty,
* the biggest resolution is chosen. */
void get_closest_resolution(resolution_t *resolution, resolution_list_t *list);
/// Returns 1 if the struct is null, otherwise 0
int is_struct_null_fun(const void *pdata, const int len);
/// Returns 1 if the struct is null, otherwise 0
#define is_struct_null(pdata) is_struct_null_fun(pdata, sizeof(*pdata))
#endif
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