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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or 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.GPL2 and 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-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef SHAREDTEXTUREPROVIDER_H
#define SHAREDTEXTUREPROVIDER_H
#include <QOpenGLFunctions>
#include <QQuickImageProvider>
#include <QtQuick/QSGTexture>
#include <QScopedPointer>
#include <QHash>
#include <QtWaylandClient/private/qwaylandserverbufferintegration_p.h>
QT_BEGIN_NAMESPACE
class TextureSharingExtension;
class SharedTextureRegistry : public QObject
{
Q_OBJECT
public:
SharedTextureRegistry();
~SharedTextureRegistry() override;
const QtWaylandClient::QWaylandServerBuffer *bufferForId(const QString &id) const;
void requestBuffer(const QString &id);
void abandonBuffer(const QString &id);
static bool preinitialize();
public slots:
void receiveBuffer(QtWaylandClient::QWaylandServerBuffer *buffer, const QString &id);
signals:
void replyReceived(const QString &id);
private slots:
void handleExtensionActive();
private:
TextureSharingExtension *m_extension = nullptr;
QHash<QString, QtWaylandClient::QWaylandServerBuffer *> m_buffers;
QStringList m_pendingBuffers;
};
class SharedTextureProvider : public QQuickAsyncImageProvider
{
public:
SharedTextureProvider();
~SharedTextureProvider() override;
QQuickImageResponse *requestImageResponse(const QString &id, const QSize &requestedSize) override;
private:
SharedTextureRegistry *m_registry = nullptr;
bool m_sharingAvailable = false;
};
class SharedTexture : public QSGTexture
{
Q_OBJECT
public:
SharedTexture(QtWaylandClient::QWaylandServerBuffer *buffer);
int textureId() const override;
QSize textureSize() const override;
bool hasAlphaChannel() const override;
bool hasMipmaps() const override;
void bind() override;
private:
void updateGLTexture() const;
QtWaylandClient::QWaylandServerBuffer *m_buffer = nullptr;
mutable QOpenGLTexture *m_tex = nullptr;
};
QT_END_NAMESPACE
#endif // SHAREDTEXTUREPROVIDER_H
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