Add hole punching

.gitignore

@@ -31,7 +31,7 @@ src/gstreamer/qtgstreamerversion.h
 QtGstreamer.version*
 *-config*
 config.*
-.qmake*
+.qmake.cache
 .pch
 uic_*
 *_wrapper.sh

.qmake.conf

+load(qt_build_config)
+
+MODULE_VERSION = 5.12.0

src/gstreamerextras/playback/qgstreamermediaplayer.cpp

@@ -355,5 +355,13 @@ QVariantMap QGstreamerMediaPlayer::textStreamProperties(int i)
     return d->session ? d->session->textStreamProperties(i) : QVariantMap();
 }
 
+void QGstreamerMediaPlayer::set(const QString &elementName, const QVariantMap& map)
+{
+    Q_D(QGstreamerMediaPlayer);
+
+    if (d->session)
+        d->session->setGstProperties(elementName, map);
+}
+
 #include "moc_qgstreamermediaplayer.cpp"
 QT_END_NAMESPACE

src/gstreamerextras/playback/qgstreamermediaplayer.h

@@ -101,6 +101,8 @@ public:
     void setTextStream(int i);
     Q_INVOKABLE QVariantMap textStreamProperties(int i);
 
+    Q_INVOKABLE void set(const QString &elementName, const QVariantMap& map);
+
 Q_SIGNALS:
     void sourceChanged();
     void mediaObjectChanged();

src/plugins/plugins.pro

 TEMPLATE = subdirs
+
+SUBDIRS += video

src/plugins/video/transparentvideobackend/qtransparentvideobackend.cpp

+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qtransparentvideobackend.h"
+
+#include <private/qdeclarativevideooutput_render_p.h>
+#include <private/qquickwindow_p.h>
+#include <private/qsgadaptationlayer_p.h>
+#include <private/qdeclarativevideooutput_p.h>
+
+class QTransparentVideoRendererBackend : public QDeclarativeVideoRendererBackend
+{
+public:
+    QTransparentVideoRendererBackend(QDeclarativeVideoOutput *parent)
+        : QDeclarativeVideoRendererBackend(parent)
+    {}
+
+    void itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &changeData) override;
+    QSGNode *updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *data) override;
+
+private:
+    QSGContext *m_context = nullptr;
+};
+
+void QTransparentVideoRendererBackend::itemChange(QQuickItem::ItemChange change,
+    const QQuickItem::ItemChangeData &changeData)
+{
+    Q_UNUSED(change);
+    if (!changeData.window)
+        return;
+
+    m_context = static_cast<QQuickWindowPrivate *>(QObjectPrivate::get(changeData.window))->context->sceneGraphContext();
+
+    QSurfaceFormat fmt = changeData.window->requestedFormat();
+    if (fmt.alphaBufferSize() != 8) {
+        fmt.setAlphaBufferSize(8);
+        changeData.window->setFormat(fmt);
+    }
+}
+
+QSGNode *QTransparentVideoRendererBackend::updatePaintNode(QSGNode *oldNode,
+    QQuickItem::UpdatePaintNodeData *data)
+{
+    Q_UNUSED(data);
+    if (!m_context)
+        return nullptr;
+
+    QSGInternalRectangleNode *rect = static_cast<QSGInternalRectangleNode *>(oldNode);
+    if (!rect)
+        rect = m_context->createInternalRectangleNode();
+
+    rect->setColor(QColor(0, 0, 0, 0));
+    rect->setRect(QRectF(0, 0, q->width(), q->height()));
+    rect->update();
+
+    return rect;
+}
+
+QDeclarativeVideoBackend *QTransparentVideoNodeBackend::create(QDeclarativeVideoOutput *parent)
+{
+    return parent->punchHole() ? new QTransparentVideoRendererBackend(parent) : nullptr;
+}

src/plugins/video/transparentvideobackend/qtransparentvideobackend.h

+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** 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 QTRANSPARENTVIDEOBACKEND_H
+#define QTRANSPARENTVIDEOBACKEND_H
+
+#include <private/qdeclarativevideooutput_backend_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QTransparentVideoNodeBackend : public QObject, public QDeclarativeVideoBackendFactoryInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(QDeclarativeVideoBackendFactoryInterface)
+    Q_PLUGIN_METADATA(IID "org.qt-project.qt.declarativevideobackendfactory/5.2" FILE "transparentvideobackend.json")
+public:
+    QDeclarativeVideoBackend *create(QDeclarativeVideoOutput *parent) override;
+};
+
+QT_END_NAMESPACE
+
+#endif
+

src/plugins/video/transparentvideobackend/transparentvideobackend.json

+{
+    "Keys": ["transparentvideobackend"],
+    "Services": ["declarativevideobackend"]
+}

src/plugins/video/transparentvideobackend/transparentvideobackend.pro

+TARGET = transparentvideobackend
+
+QT += qtmultimediaquicktools-private quick-private
+
+HEADERS += \
+    qtransparentvideobackend.h
+
+SOURCES += \
+    qtransparentvideobackend.cpp
+
+PLUGIN_TYPE = video/declarativevideobackend
+PLUGIN_EXTENDS = quick
+PLUGIN_CLASS_NAME = QTransparentVideoNodeBackend
+load(qt_plugin)

src/plugins/video/video.pro

+TEMPLATE = subdirs
+
+SUBDIRS += transparentvideobackend

src/src.pro

@@ -9,3 +9,7 @@ qtHaveModule(quick):qtConfig(opengl) {
     SUBDIRS += \
         src_imports
 }
+
+src_plugins.subdir = plugins
+
+SUBDIRS += src_plugins
\ No newline at end of file