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/*
* FPrint Image
* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
* Copyright (C) 2019 Benjamin Berg <bberg@redhat.com>
*
* 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
*/
#pragma once
#include <config.h>
#include "fp-image.h"
/**
* FpiImageFlags:
* @FPI_IMAGE_V_FLIPPED: the image is vertically flipped
* @FPI_IMAGE_H_FLIPPED: the image is horizontally flipped
* @FPI_IMAGE_COLORS_INVERTED: the colours are inverted
*
* Flags used in an #FpImage structure to describe the contained image.
* This is useful for image drivers as they can simply set these flags and
* rely on the image to be normalized by libfprint before further processing.
*/
typedef enum {
FPI_IMAGE_V_FLIPPED = 1 << 0,
FPI_IMAGE_H_FLIPPED = 1 << 1,
FPI_IMAGE_COLORS_INVERTED = 1 << 2,
FPI_IMAGE_PARTIAL = 1 << 3,
} FpiImageFlags;
/**
* FpImage:
* @width: Width of the image
* @height: Height of the image
* @ppmm: Pixels per millimeter
* @flags: #FpiImageFlags for required normalization
*
* Structure holding an image. The public fields are only public for internal
* use by the drivers.
*/
struct _FpImage
{
/*< private >*/
GObject parent;
/*< public >*/
guint width;
guint height;
gdouble ppmm;
FpiImageFlags flags;
/*< private >*/
guint8 *data;
guint8 *binarized;
GPtrArray *minutiae;
guint ref_count;
};
gint fpi_std_sq_dev (const guint8 *buf,
gint size);
gint fpi_mean_sq_diff_norm (const guint8 *buf1,
const guint8 *buf2,
gint size);
#if HAVE_PIXMAN
FpImage *fpi_image_resize (FpImage *orig,
guint w_factor,
guint h_factor);
#endif
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