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| |
| #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 |