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Diffstat (limited to 'src/qtmultimediaquicktools/qdeclarativevideooutput_backend_p.h')
-rw-r--r-- | src/qtmultimediaquicktools/qdeclarativevideooutput_backend_p.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/qtmultimediaquicktools/qdeclarativevideooutput_backend_p.h b/src/qtmultimediaquicktools/qdeclarativevideooutput_backend_p.h new file mode 100644 index 000000000..da99b387a --- /dev/null +++ b/src/qtmultimediaquicktools/qdeclarativevideooutput_backend_p.h @@ -0,0 +1,137 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2016 Research In Motion +** Contact: https://www.qt.io/licensing/ +** +** This file is part 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 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 |