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/*
This file is part of Android File Transfer For Linux.
Copyright (C) 2015-2020 Vladimir Menshakov
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef AFTL_QT_QTOBJECTSTREAM_H
#define AFTL_QT_QTOBJECTSTREAM_H
#include <QObject>
#include <QFile>
#include <mtp/ptp/IObjectStream.h>
class QtObjectInputStream : public QObject, public mtp::IObjectInputStream, public mtp::CancellableStream
{
Q_OBJECT
signals:
void positionChanged(qint64, qint64);
private:
QFile _file;
qint64 _size;
int _progress;
public:
QtObjectInputStream(const QString &file) : _file(file), _size(_file.size()), _progress(-1) {
_file.open(QFile::ReadOnly);
}
bool Valid() const
{ return _file.isOpen(); }
virtual mtp::u64 GetSize() const
{ return _size; }
virtual size_t Read(mtp::u8 *data, size_t size)
{
CheckCancelled();
qint64 r = _file.read(static_cast<char *>(static_cast<void *>(data)), size);
if (r < 0)
throw std::runtime_error(_file.errorString().toStdString());
int progress = _size > 0? _file.pos() * 1000L / _size: 0;
if (progress != _progress) //throttle events a bit
{
_progress = progress;
emit positionChanged(_file.pos(), _size);
}
return r;
}
};
class QtObjectOutputStream : public QObject, public mtp::IObjectOutputStream, public mtp::CancellableStream
{
Q_OBJECT
signals:
void positionChanged(qint64, qint64);
private:
QFile _file;
qint64 _size;
public:
QtObjectOutputStream(const QString &file): _file(file)
{ _file.open(QFile::WriteOnly | QFile::Truncate); }
bool Valid() const
{ return _file.isOpen(); }
virtual size_t Write(const mtp::u8 *data, size_t size)
{
CheckCancelled();
qint64 r = _file.write(static_cast<const char *>(static_cast<const void *>(data)), size);
if (r < 0)
throw std::runtime_error(_file.errorString().toStdString());
emit positionChanged(_file.pos(), _size);
return r;
}
};
#endif // QTOBJECTSTREAM_H
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