1 files changed, 147 insertions, 0 deletions
diff --git a/backend/genesys/usb_device.cpp b/backend/genesys/usb_device.cpp
new file mode 100644
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--- /dev/null
+++ b/backend/genesys/usb_device.cpp
@@ -0,0 +1,147 @@
+/* sane - Scanner Access Now Easy.
+
+   Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt>
+
+   This file is part of the SANE package.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program 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
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+   MA 02111-1307, USA.
+
+   As a special exception, the authors of SANE give permission for
+   additional uses of the libraries contained in this release of SANE.
+
+   The exception is that, if you link a SANE library with other files
+   to produce an executable, this does not by itself cause the
+   resulting executable to be covered by the GNU General Public
+   License.  Your use of that executable is in no way restricted on
+   account of linking the SANE library code into it.
+
+   This exception does not, however, invalidate any other reasons why
+   the executable file might be covered by the GNU General Public
+   License.
+
+   If you submit changes to SANE to the maintainers to be included in
+   a subsequent release, you agree by submitting the changes that
+   those changes may be distributed with this exception intact.
+
+   If you write modifications of your own for SANE, it is your choice
+   whether to permit this exception to apply to your modifications.
+   If you do not wish that, delete this exception notice.
+*/
+
+#define DEBUG_DECLARE_ONLY
+
+#include "usb_device.h"
+
+namespace genesys {
+
+IUsbDevice::~IUsbDevice() = default;
+
+UsbDevice::~UsbDevice()
+{
+    if (is_open()) {
+        DBG(DBG_error, "UsbDevice not closed; closing automatically");
+        close();
+    }
+}
+
+void UsbDevice::open(const char* dev_name)
+{
+    DBG_HELPER(dbg);
+
+    if (is_open()) {
+        throw SaneException("device already open");
+    }
+    int device_num = 0;
+
+    dbg.status("open device");
+    TIE(sanei_usb_open(dev_name, &device_num));
+
+    name_ = dev_name;
+    device_num_ = device_num;
+    is_open_ = true;
+}
+
+void UsbDevice::clear_halt()
+{
+    DBG_HELPER(dbg);
+    assert_is_open();
+    TIE(sanei_usb_clear_halt(device_num_));
+}
+
+void UsbDevice::reset()
+{
+    DBG_HELPER(dbg);
+    assert_is_open();
+    TIE(sanei_usb_reset(device_num_));
+}
+
+void UsbDevice::close()
+{
+    DBG_HELPER(dbg);
+    assert_is_open();
+
+    // we can't do much if closing fails, so we close the device on our side regardless of the
+    // function succeeds
+    int device_num = device_num_;
+
+    set_not_open();
+    sanei_usb_close(device_num);
+}
+
+void UsbDevice::get_vendor_product(int& vendor, int& product)
+{
+    DBG_HELPER(dbg);
+    assert_is_open();
+    TIE(sanei_usb_get_vendor_product(device_num_, &vendor, &product));
+}
+
+void UsbDevice::control_msg(int rtype, int reg, int value, int index, int length,
+                            std::uint8_t* data)
+{
+    DBG_HELPER(dbg);
+    assert_is_open();
+    TIE(sanei_usb_control_msg(device_num_, rtype, reg, value, index, length, data));
+}
+
+void UsbDevice::bulk_read(std::uint8_t* buffer, std::size_t* size)
+{
+    DBG_HELPER(dbg);
+    assert_is_open();
+    TIE(sanei_usb_read_bulk(device_num_, buffer, size));
+}
+
+void UsbDevice::bulk_write(const std::uint8_t* buffer, std::size_t* size)
+{
+    DBG_HELPER(dbg);
+    assert_is_open();
+    TIE(sanei_usb_write_bulk(device_num_, buffer, size));
+}
+
+void UsbDevice::assert_is_open() const
+{
+    if (!is_open()) {
+        throw SaneException("device not open");
+    }
+}
+
+void UsbDevice::set_not_open()
+{
+    device_num_ = 0;
+    is_open_ = false;
+    name_ = "";
+}
+
+} // namespace genesys