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2b008b52d7
We can just use a GTask to handle the detection while using the finish function to process the results to the image, so that it is more predictable when this happens and it does not depend on a thread returning. Also remove data duplication when possible, this class wasn't fully safe anyway to be used concurrently, so there's no point to copy data when not needed. Also added the hard constraint to not proceed with minutiae detection if something else is already doing this. At the same time we can mark the task to finish early on cancellation.
84 lines
2.4 KiB
C
84 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 "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_NONE = 0,
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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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gboolean detection_in_progress;
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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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FpImage *fpi_image_resize (FpImage *orig,
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guint w_factor,
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guint h_factor);
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