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/*
* WebApiConnection.h - declaration of WebApiConnection class
*
* Copyright (c) 2020-2025 Tobias Junghans <tobydox@veyon.io>
*
* This file is part of Veyon - https://veyon.io
*
* 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 (see COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#pragma once
#include <QElapsedTimer>
#include <QtConcurrent>
#include "ComputerControlInterface.h"
class ComputerControlInterface;
class QTimer;
class WebApiConnection
{
public:
WebApiConnection( const QString& hostAddress );
~WebApiConnection();
ComputerControlInterface::Pointer controlInterface() const
{
return m_controlInterface;
}
void lock()
{
m_controlInterface->lock();
}
void unlock()
{
m_controlInterface->unlock();
}
QTimer* idleTimer() const
{
return m_idleTimer;
}
QTimer* lifetimeTimer() const
{
return m_lifetimeTimer;
}
QSize scaledFramebufferSize( int width, int height ) const;
QByteArray encodedFramebufferData( QSize size, const QByteArray& format, int compression, int quality );
const QString& framebufferEncodingError() const
{
return m_encodingError;
}
private:
void runFramebufferEncoder();
ComputerControlInterface::Pointer m_controlInterface;
QTimer* m_idleTimer{nullptr};
QTimer* m_lifetimeTimer{nullptr};
QByteArray m_imageFormat{};
int m_imageQuality{0};
int m_imageCompression{0};
QSize m_imageSize{};
struct EncodingResult {
QByteArray imageData{};
QString errorString{};
qint64 timestamp{QDateTime::currentMSecsSinceEpoch()};
bool expired() const
{
static constexpr auto MaxAge = 1000;
return QDateTime::currentMSecsSinceEpoch() - timestamp > MaxAge;
}
};
static constexpr auto MinimumPreencodeInterval = 10;
QFuture<EncodingResult> m_framebufferEncoder;
QString m_encodingError;
QElapsedTimer m_lastFramebufferRequestTimer;
qint64 m_lastFramebufferRequestInterval{0};
QAtomicInteger<qint64> m_framebufferEncodingTime{0};
};
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