kopia lustrzana https://gitlab.com/sane-project/backends
148 wiersze
3.9 KiB
C++
148 wiersze
3.9 KiB
C++
/* sane - Scanner Access Now Easy.
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Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt>
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This file is part of the SANE package.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program 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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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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As a special exception, the authors of SANE give permission for
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additional uses of the libraries contained in this release of SANE.
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The exception is that, if you link a SANE library with other files
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to produce an executable, this does not by itself cause the
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resulting executable to be covered by the GNU General Public
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License. Your use of that executable is in no way restricted on
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account of linking the SANE library code into it.
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This exception does not, however, invalidate any other reasons why
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the executable file might be covered by the GNU General Public
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License.
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If you submit changes to SANE to the maintainers to be included in
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a subsequent release, you agree by submitting the changes that
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those changes may be distributed with this exception intact.
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If you write modifications of your own for SANE, it is your choice
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whether to permit this exception to apply to your modifications.
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If you do not wish that, delete this exception notice.
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*/
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#define DEBUG_DECLARE_ONLY
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#include "usb_device.h"
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namespace genesys {
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IUsbDevice::~IUsbDevice() = default;
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UsbDevice::~UsbDevice()
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{
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if (is_open()) {
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DBG(DBG_error, "UsbDevice not closed; closing automatically");
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close();
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}
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}
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void UsbDevice::open(const char* dev_name)
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{
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DBG_HELPER(dbg);
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if (is_open()) {
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throw SaneException("device already open");
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}
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int device_num = 0;
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dbg.status("open device");
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TIE(sanei_usb_open(dev_name, &device_num));
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name_ = dev_name;
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device_num_ = device_num;
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is_open_ = true;
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}
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void UsbDevice::clear_halt()
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{
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DBG_HELPER(dbg);
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assert_is_open();
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TIE(sanei_usb_clear_halt(device_num_));
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}
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void UsbDevice::reset()
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{
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DBG_HELPER(dbg);
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assert_is_open();
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TIE(sanei_usb_reset(device_num_));
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}
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void UsbDevice::close()
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{
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DBG_HELPER(dbg);
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assert_is_open();
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// we can't do much if closing fails, so we close the device on our side regardless of the
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// function succeeds
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int device_num = device_num_;
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set_not_open();
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sanei_usb_close(device_num);
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}
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void UsbDevice::get_vendor_product(int& vendor, int& product)
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{
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DBG_HELPER(dbg);
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assert_is_open();
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TIE(sanei_usb_get_vendor_product(device_num_, &vendor, &product));
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}
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void UsbDevice::control_msg(int rtype, int reg, int value, int index, int length,
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std::uint8_t* data)
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{
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DBG_HELPER(dbg);
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assert_is_open();
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TIE(sanei_usb_control_msg(device_num_, rtype, reg, value, index, length, data));
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}
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void UsbDevice::bulk_read(std::uint8_t* buffer, std::size_t* size)
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{
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DBG_HELPER(dbg);
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assert_is_open();
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TIE(sanei_usb_read_bulk(device_num_, buffer, size));
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}
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void UsbDevice::bulk_write(const std::uint8_t* buffer, std::size_t* size)
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{
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DBG_HELPER(dbg);
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assert_is_open();
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TIE(sanei_usb_write_bulk(device_num_, buffer, size));
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}
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void UsbDevice::assert_is_open() const
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{
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if (!is_open()) {
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throw SaneException("device not open");
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}
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}
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void UsbDevice::set_not_open()
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{
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device_num_ = 0;
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is_open_ = false;
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name_ = "";
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}
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} // namespace genesys
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