81e0f4dfe5
The driver seems to have relied on the device to be fully deactivated and activated again for each capture. This is not the case during enroll, and as such in can cause issues. Try fixing this by splitting out the last few commands send to the device and assuming that this starts the capture. Fixes: #306
63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/*
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* AuthenTec AES3500/AES4000 common routines
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*
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* The AES3500 and AES4000 sensors are press-typed, and could capture
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* fingerprint images in 128x128 and 96x96 pixels respectively. They
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* share a same communication interface: a number of frames are
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* transferred and captured, from which a final image could be
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* assembled. Each frame has fixed height of 16 pixels.
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*
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* As the imaging area is a bit small, only a part of finger could be
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* captured, the detected minutiae are not so many that the NBIS
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* matching works not so good. The verification rate is very low at the
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* moment.
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*
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* This work is derived from Daniel Drake's AES4000 driver.
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*
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* Copyright (C) 2013 Juvenn Woo <machese@gmail.com>
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* Copyright (C) 2007-2008 Daniel Drake <dsd@gentoo.org>
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* 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, but
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* 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
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* 02110-1301 USA
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*
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*/
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#pragma once
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#include "fpi-image-device.h"
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#include "aeslib.h"
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#define AES3K_FRAME_HEIGHT 16
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G_DECLARE_DERIVABLE_TYPE (FpiDeviceAes3k, fpi_device_aes3k, FPI,
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DEVICE_AES3K, FpImageDevice)
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#define FPI_TYPE_DEVICE_AES3K (fpi_device_aes3k_get_type ())
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struct _FpiDeviceAes3kClass
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{
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FpImageDeviceClass parent;
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gsize frame_width; /* image size = frame_width x frame_width */
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gsize frame_size; /* 4 bits/pixel: frame_width x AES3K_FRAME_HEIGHT / 2 */
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gsize frame_number; /* number of frames */
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gsize enlarge_factor;
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gsize data_buflen; /* buffer length of usb bulk transfer */
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struct aes_regwrite *init_reqs; /* initial values sent to device */
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gsize init_reqs_len;
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struct aes_regwrite *capture_reqs; /* capture values sent to device */
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gsize capture_reqs_len;
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};
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