85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/*
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* FPrint Image
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* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
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* Copyright (C) 2019 Benjamin Berg <bberg@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include <config.h>
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#include "fp-image.h"
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/**
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* FpiImageFlags:
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* @FPI_IMAGE_V_FLIPPED: the image is vertically flipped
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* @FPI_IMAGE_H_FLIPPED: the image is horizontally flipped
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* @FPI_IMAGE_COLORS_INVERTED: the colours are inverted
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*
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* Flags used in an #FpImage structure to describe the contained image.
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* This is useful for image drivers as they can simply set these flags and
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* rely on the image to be normalized by libfprint before further processing.
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*/
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typedef enum {
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FPI_IMAGE_V_FLIPPED = 1 << 0,
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FPI_IMAGE_H_FLIPPED = 1 << 1,
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FPI_IMAGE_COLORS_INVERTED = 1 << 2,
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FPI_IMAGE_PARTIAL = 1 << 3,
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} FpiImageFlags;
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/**
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* FpImage:
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* @width: Width of the image
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* @height: Height of the image
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* @ppmm: Pixels per millimeter
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* @flags: #FpiImageFlags for required normalization
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*
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* Structure holding an image. The public fields are only public for internal
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* use by the drivers.
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*/
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struct _FpImage
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{
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/*< private >*/
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GObject parent;
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/*< public >*/
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guint width;
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guint height;
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gdouble ppmm;
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FpiImageFlags flags;
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/*< private >*/
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guint8 *data;
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guint8 *binarized;
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GPtrArray *minutiae;
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guint ref_count;
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};
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gint fpi_std_sq_dev (const guint8 *buf,
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gint size);
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gint fpi_mean_sq_diff_norm (const guint8 *buf1,
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const guint8 *buf2,
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gint size);
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#if HAVE_PIXMAN
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FpImage *fpi_image_resize (FpImage *orig,
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guint w_factor,
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guint h_factor);
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#endif
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