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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Debug Bridge.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef USBGADGET_H
#define USBGADGET_H
class UsbGadgetControl;
class UsbGadgetReader;
class UsbGadgetWriter;
#include <QtCore/qbytearray.h>
#include <QtCore/qfile.h>
#include <QtCore/qiodevice.h>
#include <QtCore/qqueue.h>
QT_BEGIN_NAMESPACE
class QThread;
QT_END_NAMESPACE
#include <memory>
class UsbGadget : public QIODevice
{
Q_OBJECT
public:
UsbGadget();
virtual ~UsbGadget();
bool open(OpenMode mode) override;
signals:
void writeAvailable(QByteArray data);
protected:
qint64 readData(char *data, qint64 maxSize) override;
qint64 writeData(const char *data, qint64 maxSize) override;
private slots:
void dataRead(QByteArray data);
private:
bool openControlEndpoint();
void startControlThread();
void startReadThread();
void startWriteThread();
QFile m_controlEndpoint;
// Endpoints are named in line with USB terminology. Out means from host to
// gadget and in means from gadget to host.
QFile m_outEndpoint;
QFile m_inEndpoint;
std::unique_ptr<QThread> m_controlThread;
std::unique_ptr<QThread> m_readThread;
std::unique_ptr<QThread> m_writeThread;
std::unique_ptr<UsbGadgetControl> m_control;
std::unique_ptr<UsbGadgetReader> m_reader;
std::unique_ptr<UsbGadgetWriter> m_writer;
QQueue<QByteArray> m_reads;
};
#endif // USBGADGET_H
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