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examples: Add Identify example

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It was the only main action left in the examples, we use the gallery
from the device if available, otherwise the local one.
This commit is contained in:
Marco Trevisan (Treviño)
2020-11-08 03:58:58 +01:00
committed by Benjamin Berg
parent 21ee241f0c
commit fb5854213a
4 changed files with 352 additions and 2 deletions
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48
examples/storage.c
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@@ -2,7 +2,7 @@
* Trivial storage driver for example programs
*
* Copyright (C) 2019 Benjamin Berg <bberg@redhat.com>
* Copyright (C) 2019 Marco Trevisan <marco.trevisan@canonical.com>
* Copyright (C) 2019-2020 Marco Trevisan <marco.trevisan@canonical.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -160,6 +160,52 @@ print_data_load (FpDevice *dev, FpFinger finger)
return NULL;
}
GPtrArray *
gallery_data_load (FpDevice *dev)
{
g_autoptr(GVariantDict) dict = NULL;
g_autoptr(GVariant) dict_variant = NULL;
g_autofree char *dev_prefix = NULL;
GPtrArray *gallery;
const char *driver;
const char *dev_id;
GVariantIter iter;
GVariant *value;
gchar *key;
gallery = g_ptr_array_new_with_free_func (g_object_unref);
dict = load_data ();
dict_variant = g_variant_dict_end (dict);
driver = fp_device_get_driver (dev);
dev_id = fp_device_get_device_id (dev);
dev_prefix = g_strdup_printf ("%s/%s/", driver, dev_id);
g_variant_iter_init (&iter, dict_variant);
while (g_variant_iter_loop (&iter, "{sv}", &key, &value))
{
FpPrint *print;
const guchar *stored_data;
g_autoptr(GError) error = NULL;
gsize stored_len;
if (!g_str_has_prefix (key, dev_prefix))
continue;
stored_data = (const guchar *) g_variant_get_fixed_array (value, &stored_len, 1);
print = fp_print_deserialize (stored_data, stored_len, &error);
if (error)
{
g_warning ("Error deserializing data: %s", error->message);
continue;
}
g_ptr_array_add (gallery, print);
}
return gallery;
}
FpPrint *
print_create_template (FpDevice *dev, FpFinger finger)
{