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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Copyright (C) 2012 Research In Motion
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDECLARATIVEVIDEOOUTPUT_BACKEND_P_H
#define QDECLARATIVEVIDEOOUTPUT_BACKEND_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/qpointer.h>
#include <QtCore/qsize.h>
#include <QtQuick/qquickitem.h>
#include <QtQuick/qsgnode.h>
#include <private/qtmultimediaquickdefs_p.h>
QT_BEGIN_NAMESPACE
class QAbstractVideoSurface;
class QDeclarativeVideoOutput;
class QMediaService;
class QAbstractVideoFilter;
class Q_MULTIMEDIAQUICK_EXPORT QDeclarativeVideoBackend
{
public:
explicit QDeclarativeVideoBackend(QDeclarativeVideoOutput *parent)
: q(parent)
{}
virtual ~QDeclarativeVideoBackend()
{}
virtual bool init(QMediaService *service) = 0;
virtual void releaseSource() = 0;
virtual void releaseControl() = 0;
virtual void itemChange(QQuickItem::ItemChange change,
const QQuickItem::ItemChangeData &changeData) = 0;
virtual QSize nativeSize() const = 0;
virtual void updateGeometry() = 0;
virtual QSGNode *updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *data) = 0;
virtual QAbstractVideoSurface *videoSurface() const = 0;
// The viewport, adjusted for the pixel aspect ratio
virtual QRectF adjustedViewport() const = 0;
virtual void appendFilter(QAbstractVideoFilter *filter) { Q_UNUSED(filter); }
virtual void clearFilters() { }
virtual void releaseResources() { }
virtual void invalidateSceneGraph() { }
protected:
QDeclarativeVideoOutput *q;
QPointer<QMediaService> m_service;
};
class QDeclarativeVideoBackendFactoryInterface
{
public:
virtual QDeclarativeVideoBackend *create(QDeclarativeVideoOutput *parent) = 0;
};
#define QDeclarativeVideoBackendFactoryInterface_iid "org.qt-project.qt.declarativevideobackendfactory/5.2"
Q_DECLARE_INTERFACE(QDeclarativeVideoBackendFactoryInterface, QDeclarativeVideoBackendFactoryInterface_iid)
/*
* Helper - returns true if the given orientation has the same aspect as the default (e.g. 180*n)
*/
namespace {
inline bool qIsDefaultAspect(int o)
{
return (o % 180) == 0;
}
/*
* Return the orientation normalized to 0-359
*/
inline int qNormalizedOrientation(int o)
{
// Negative orientations give negative results
int o2 = o % 360;
if (o2 < 0)
o2 += 360;
return o2;
}
}
QT_END_NAMESPACE
#endif
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