gstreamer/subprojects/gst-plugins-good/ext/qt6/qt6glitem.h
Matthew Waters 18972fc942 add new plugin for Qt 6 rendering inside a QML scene
- Based heavily on the existing Qt5 integration however:
  - The sharing of OpenGL resources is slightly different
  - The integration with the scengraph is a bit different
- Wayland, XCB and KMS have been smoke tested.  Android, MacOS/iOS,
  Windows may or may not work.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3281>
2022-11-24 16:11:04 +11:00

127 lines
3.6 KiB
C++

/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __QT6_GL_ITEM_H__
#define __QT6_GL_ITEM_H__
#include <gst/gst.h>
#include <gst/gl/gl.h>
#include "gstqt6gl.h"
#include <QtCore/QMutex>
#include <QtQuick/QQuickItem>
#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLFunctions>
typedef struct _Qt6GLVideoItemPrivate Qt6GLVideoItemPrivate;
class Qt6GLVideoItem;
class Qt6GLVideoItemInterface : public QObject
{
Q_OBJECT
QML_ELEMENT
public:
Qt6GLVideoItemInterface (Qt6GLVideoItem *w) : qt_item (w), lock() {};
void invalidateRef();
void setSink (GstElement * sink);
void setBuffer (GstBuffer * buffer);
gboolean setCaps (GstCaps *caps);
gboolean initWinSys ();
GstGLContext *getQtContext();
GstGLContext *getContext();
GstGLDisplay *getDisplay();
Qt6GLVideoItem *videoItem () { return qt_item; };
void setDAR(gint, gint);
void getDAR(gint *, gint *);
void setForceAspectRatio(bool);
bool getForceAspectRatio();
private:
Qt6GLVideoItem *qt_item;
QMutex lock;
};
class Qt6GLVideoItem : public QQuickItem, protected QOpenGLFunctions
{
Q_OBJECT
QML_ELEMENT
Q_PROPERTY(bool itemInitialized
READ itemInitialized
NOTIFY itemInitializedChanged)
Q_PROPERTY(bool forceAspectRatio
READ getForceAspectRatio
WRITE setForceAspectRatio
NOTIFY forceAspectRatioChanged)
public:
Qt6GLVideoItem();
~Qt6GLVideoItem();
void setDAR(gint, gint);
void getDAR(gint *, gint *);
void setForceAspectRatio(bool);
bool getForceAspectRatio();
bool itemInitialized();
QSharedPointer<Qt6GLVideoItemInterface> getInterface() { return proxy; };
/* private for C interface ... */
Qt6GLVideoItemPrivate *priv;
Q_SIGNALS:
void itemInitializedChanged();
void forceAspectRatioChanged(bool);
private Q_SLOTS:
void handleWindowChanged(QQuickWindow * win);
void onSceneGraphInitialized();
void onSceneGraphInvalidated();
protected:
QSGNode * updatePaintNode (QSGNode * oldNode, UpdatePaintNodeData * updatePaintNodeData) override;
void releaseResources() override;
void wheelEvent(QWheelEvent *) override;
void hoverEnterEvent(QHoverEvent *) override;
void hoverLeaveEvent (QHoverEvent *) override;
void hoverMoveEvent (QHoverEvent *) override;
void mousePressEvent(QMouseEvent*) override;
void mouseReleaseEvent(QMouseEvent*) override;
void touchEvent(QTouchEvent*) override;
private:
void setViewportSize(const QSize &size);
void shareContext();
void fitStreamToAllocatedSize(GstVideoRectangle * result);
QPointF mapPointToStreamSize(QPointF);
void sendMouseEvent(QMouseEvent * event, gboolean is_press);
quint32 mousePressedButton;
bool mouseHovering;
QSharedPointer<Qt6GLVideoItemInterface> proxy;
};
#endif /* __QT_GL_ITEM_H__ */