Support QVideoWindowControl in the QtQuick Video element.
Change-Id: I953899a3ec92856955d36528057b0d45f9c26394 Reviewed-by: Sean Harmer <sean.harmer@kdab.com> Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>
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Thomas McGuire
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Qt by Nokia
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src/imports/multimedia/qdeclarativevideooutput_render.cpp
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268
src/imports/multimedia/qdeclarativevideooutput_render.cpp
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/****************************************************************************
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**
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** Copyright (C) 2012 Research In Motion
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** Contact: http://www.qt-project.org/
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qdeclarativevideooutput_render_p.h"
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#include "qdeclarativevideooutput_p.h"
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#include <QtMultimedia/qvideorenderercontrol.h>
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#include <QtMultimedia/qmediaservice.h>
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#include <private/qmediapluginloader_p.h>
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#include <private/qsgvideonode_p.h>
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QT_BEGIN_NAMESPACE
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Q_GLOBAL_STATIC_WITH_ARGS(QMediaPluginLoader, videoNodeFactoryLoader,
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(QSGVideoNodeFactoryInterface_iid, QLatin1String("video/videonode"), Qt::CaseInsensitive))
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QDeclarativeVideoRendererBackend::QDeclarativeVideoRendererBackend(QDeclarativeVideoOutput *parent)
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: QDeclarativeVideoBackend(parent)
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{
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m_surface = new QSGVideoItemSurface(this);
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QObject::connect(m_surface, SIGNAL(surfaceFormatChanged(QVideoSurfaceFormat)),
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q, SLOT(_q_updateNativeSize()), Qt::QueuedConnection);
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foreach (QObject *instance, videoNodeFactoryLoader()->instances(QSGVideoNodeFactoryPluginKey)) {
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QSGVideoNodeFactoryInterface* plugin = qobject_cast<QSGVideoNodeFactoryInterface*>(instance);
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if (plugin)
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m_videoNodeFactories.append(plugin);
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}
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// Append existing node factories as fallback if we have no plugins
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m_videoNodeFactories.append(&m_i420Factory);
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m_videoNodeFactories.append(&m_rgbFactory);
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}
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QDeclarativeVideoRendererBackend::~QDeclarativeVideoRendererBackend()
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{
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releaseSource();
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releaseControl();
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delete m_surface;
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}
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bool QDeclarativeVideoRendererBackend::init(QMediaService *service)
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{
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// When there is no service, the source is an object with a "videoSurface" property, which
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// doesn't require a QVideoRendererControl and therefore always works
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if (!service)
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return true;
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if (QMediaControl *control = service->requestControl(QVideoRendererControl_iid)) {
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if ((m_rendererControl = qobject_cast<QVideoRendererControl *>(control))) {
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m_rendererControl->setSurface(m_surface);
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m_service = service;
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return true;
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}
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}
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return false;
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}
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void QDeclarativeVideoRendererBackend::itemChange(QQuickItem::ItemChange change,
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const QQuickItem::ItemChangeData &changeData)
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{
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Q_UNUSED(change);
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Q_UNUSED(changeData);
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}
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void QDeclarativeVideoRendererBackend::releaseSource()
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{
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if (q->source() && q->sourceType() == QDeclarativeVideoOutput::VideoSurfaceSource) {
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if (q->source()->property("videoSurface").value<QAbstractVideoSurface*>() == m_surface)
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q->source()->setProperty("videoSurface", QVariant::fromValue<QAbstractVideoSurface*>(0));
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}
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m_surface->stop();
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}
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void QDeclarativeVideoRendererBackend::releaseControl()
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{
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if (m_rendererControl) {
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m_rendererControl->setSurface(0);
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if (m_service)
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m_service->releaseControl(m_rendererControl);
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m_rendererControl = 0;
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}
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}
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QSize QDeclarativeVideoRendererBackend::nativeSize() const
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{
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return m_surface->surfaceFormat().sizeHint();
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}
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void QDeclarativeVideoRendererBackend::updateGeometry()
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{
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const QRectF rect(0, 0, q->width(), q->height());
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if (nativeSize().isEmpty()) {
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m_renderedRect = rect;
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m_sourceTextureRect = QRectF(0, 0, 1, 1);
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} else if (q->fillMode() == QDeclarativeVideoOutput::Stretch) {
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m_renderedRect = rect;
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m_sourceTextureRect = QRectF(0, 0, 1, 1);
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} else if (q->fillMode() == QDeclarativeVideoOutput::PreserveAspectFit) {
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m_sourceTextureRect = QRectF(0, 0, 1, 1);
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m_renderedRect = q->contentRect();
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} else if (q->fillMode() == QDeclarativeVideoOutput::PreserveAspectCrop) {
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m_renderedRect = rect;
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const qreal contentHeight = q->contentRect().height();
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const qreal contentWidth = q->contentRect().width();
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if (qIsDefaultAspect(q->orientation())) {
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m_sourceTextureRect = QRectF(-q->contentRect().left() / contentWidth,
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-q->contentRect().top() / contentHeight,
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rect.width() / contentWidth,
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rect.height() / contentHeight);
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} else {
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m_sourceTextureRect = QRectF(-q->contentRect().top() / contentHeight,
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-q->contentRect().left() / contentWidth,
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rect.height() / contentHeight,
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rect.width() / contentWidth);
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}
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}
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}
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QSGNode *QDeclarativeVideoRendererBackend::updatePaintNode(QSGNode *oldNode,
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QQuickItem::UpdatePaintNodeData *data)
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{
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Q_UNUSED(data);
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QSGVideoNode *videoNode = static_cast<QSGVideoNode *>(oldNode);
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QMutexLocker lock(&m_frameMutex);
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if (videoNode && videoNode->pixelFormat() != m_frame.pixelFormat()) {
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#ifdef DEBUG_VIDEOITEM
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qDebug() << "updatePaintNode: deleting old video node because frame format changed...";
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#endif
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delete videoNode;
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videoNode = 0;
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}
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if (!m_frame.isValid()) {
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#ifdef DEBUG_VIDEOITEM
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qDebug() << "updatePaintNode: no frames yet... aborting...";
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#endif
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return 0;
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}
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if (!videoNode) {
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foreach (QSGVideoNodeFactoryInterface* factory, m_videoNodeFactories) {
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videoNode = factory->createNode(m_surface->surfaceFormat());
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if (videoNode)
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break;
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}
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}
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if (!videoNode)
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return 0;
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// Negative rotations need lots of %360
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videoNode->setTexturedRectGeometry(m_renderedRect, m_sourceTextureRect,
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qNormalizedOrientation(q->orientation()));
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videoNode->setCurrentFrame(m_frame);
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return videoNode;
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}
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QAbstractVideoSurface *QDeclarativeVideoRendererBackend::videoSurface() const
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{
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return m_surface;
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}
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void QDeclarativeVideoRendererBackend::present(const QVideoFrame &frame)
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{
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m_frameMutex.lock();
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m_frame = frame;
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m_frameMutex.unlock();
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q->update();
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}
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void QDeclarativeVideoRendererBackend::stop()
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{
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present(QVideoFrame());
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}
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QSGVideoItemSurface::QSGVideoItemSurface(QDeclarativeVideoRendererBackend *backend, QObject *parent)
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: QAbstractVideoSurface(parent),
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m_backend(backend)
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{
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}
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QSGVideoItemSurface::~QSGVideoItemSurface()
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{
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}
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QList<QVideoFrame::PixelFormat> QSGVideoItemSurface::supportedPixelFormats(
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QAbstractVideoBuffer::HandleType handleType) const
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{
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QList<QVideoFrame::PixelFormat> formats;
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foreach (QSGVideoNodeFactoryInterface* factory, m_backend->m_videoNodeFactories)
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formats.append(factory->supportedPixelFormats(handleType));
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return formats;
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}
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bool QSGVideoItemSurface::start(const QVideoSurfaceFormat &format)
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{
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#ifdef DEBUG_VIDEOITEM
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qDebug() << Q_FUNC_INFO << format;
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#endif
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if (!supportedPixelFormats(format.handleType()).contains(format.pixelFormat()))
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return false;
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return QAbstractVideoSurface::start(format);
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}
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void QSGVideoItemSurface::stop()
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{
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m_backend->stop();
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QAbstractVideoSurface::stop();
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}
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bool QSGVideoItemSurface::present(const QVideoFrame &frame)
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{
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if (!frame.isValid()) {
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qWarning() << Q_FUNC_INFO << "I'm getting bad frames here...";
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return false;
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}
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m_backend->present(frame);
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return true;
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}
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QT_END_NAMESPACE
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