lib: Major rewrite of the libfprint core and API

This is a rewrite of the core based on GObject and Gio. This commit breaks the build in a lot of ways, but basic functionality will start working again with the next commits.
2025-11-15 07:38:12 +00:00 · 2019-07-03 23:29:05 +02:00
parent 30a449841c
commit 689aff0232
53 changed files with 8358 additions and 6759 deletions
--- a/libfprint/fpi-image.h
+++ b/libfprint/fpi-image.h
@@ -0,0 +1,83 @@
+/*
+ * 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,
+} 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