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769fffa3d9
Very much in the same spirit as the Gtk GL sink
Two things are provided
1. A QQuickItem subclass that renders out RGBA filled GstGLMemory
buffers that is instantiated from qml.
2. A sink element that will push buffers into (1)
To use
1. Declare the GstGLVideoItem in qml with an appropriate
objectName property set.
2. Get the aforementioned GstGLVideoItem from qml using something like
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
QObject *rootObject = engine.rootObjects().first();
QQuickItem *videoItem = rootObject->findChild<QQuickItem *> ("videoItem");
3. Set the videoItem on the sink
https://bugzilla.gnome.org/show_bug.cgi?id=752185
72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
/*
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* GStreamer
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* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __QT_ITEM_H__
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#define __QT_ITEM_H__
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#include <gst/gst.h>
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#include <gst/gl/gl.h>
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#include <QQuickItem>
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#include <QOpenGLContext>
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#include <QOpenGLFunctions>
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typedef struct _QtGLVideoItemPrivate QtGLVideoItemPrivate;
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class QtGLVideoItem : public QQuickItem, protected QOpenGLFunctions
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{
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Q_OBJECT
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public:
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QtGLVideoItem();
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~QtGLVideoItem();
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void setDAR(gint, gint);
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void getDAR(gint *, gint *);
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void setForceAspectRatio(bool);
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bool getForceAspectRatio();
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/* private for C interface ... */
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QtGLVideoItemPrivate *priv;
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private Q_SLOTS:
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void handleWindowChanged(QQuickWindow * win);
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void onSceneGraphInitialized();
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void onSceneGraphInvalidated();
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protected:
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QSGNode * updatePaintNode (QSGNode * oldNode, UpdatePaintNodeData * updatePaintNodeData);
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private:
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void setViewportSize(const QSize &size);
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void shareContext();
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QSize m_viewportSize;
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};
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extern "C"
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{
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void qt_item_set_buffer (QtGLVideoItem * widget, GstBuffer * buffer);
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gboolean qt_item_set_caps (QtGLVideoItem * widget, GstCaps * caps);
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gboolean qt_item_init_winsys (QtGLVideoItem * widget);
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GstGLContext * qt_item_get_qt_context (QtGLVideoItem * qt_item);
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GstGLContext * qt_item_get_context (QtGLVideoItem * qt_item);
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GstGLDisplay * qt_item_get_display (QtGLVideoItem * qt_item);
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}
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#endif /* __QT_ITEM_H__ */
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