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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Copyright (C) 2016 Research In Motion
** 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 "qdeclarativevideooutput_render_p.h"
#include "qdeclarativevideooutput_p.h"
#include <QtCore/qobject.h>
#include <QtCore/qloggingcategory.h>
#include <private/qmediapluginloader_p.h>
#include <private/qsgvideonode_p.h>
#include <qvideosink.h>
#include <QtQuick/QQuickWindow>
#include <private/qquickwindow_p.h>
#include <QtCore/QRunnable>
QT_BEGIN_NAMESPACE
Q_DECLARE_LOGGING_CATEGORY(qLcVideo)
QDeclarativeVideoBackend::QDeclarativeVideoBackend(QDeclarativeVideoOutput *parent)
: q(parent),
m_frameChanged(false)
{
}
QDeclarativeVideoBackend::~QDeclarativeVideoBackend()
{
delete m_sink;
}
void QDeclarativeVideoBackend::releaseResources()
{
// Called on the gui thread when the window is closed or changed.
invalidateSceneGraph();
}
void QDeclarativeVideoBackend::invalidateSceneGraph()
{
// Called on the render thread, e.g. when the context is lost.
// QMutexLocker lock(&m_frameMutex);
}
void QDeclarativeVideoBackend::itemChange(QQuickItem::ItemChange change,
const QQuickItem::ItemChangeData &changeData)
{
if (change == QQuickItem::ItemSceneChange) {
if (changeData.window)
QObject::connect(changeData.window, SIGNAL(sceneGraphInvalidated()),
q, SLOT(_q_invalidateSceneGraph()), Qt::DirectConnection);
}
}
QSize QDeclarativeVideoBackend::nativeSize() const
{
return m_surfaceFormat.sizeHint();
}
void QDeclarativeVideoBackend::updateGeometry()
{
const QRectF viewport = m_surfaceFormat.viewport();
const QSizeF frameSize = m_surfaceFormat.frameSize();
const QRectF normalizedViewport(viewport.x() / frameSize.width(),
viewport.y() / frameSize.height(),
viewport.width() / frameSize.width(),
viewport.height() / frameSize.height());
const QRectF rect(0, 0, q->width(), q->height());
if (nativeSize().isEmpty()) {
m_renderedRect = rect;
m_sourceTextureRect = normalizedViewport;
} else if (q->fillMode() == QDeclarativeVideoOutput::Stretch) {
m_renderedRect = rect;
m_sourceTextureRect = normalizedViewport;
} else if (q->fillMode() == QDeclarativeVideoOutput::PreserveAspectFit) {
m_sourceTextureRect = normalizedViewport;
m_renderedRect = q->contentRect();
} else if (q->fillMode() == QDeclarativeVideoOutput::PreserveAspectCrop) {
m_renderedRect = rect;
const qreal contentHeight = q->contentRect().height();
const qreal contentWidth = q->contentRect().width();
// Calculate the size of the source rectangle without taking the viewport into account
const qreal relativeOffsetLeft = -q->contentRect().left() / contentWidth;
const qreal relativeOffsetTop = -q->contentRect().top() / contentHeight;
const qreal relativeWidth = rect.width() / contentWidth;
const qreal relativeHeight = rect.height() / contentHeight;
// Now take the viewport size into account
const qreal totalOffsetLeft = normalizedViewport.x() + relativeOffsetLeft * normalizedViewport.width();
const qreal totalOffsetTop = normalizedViewport.y() + relativeOffsetTop * normalizedViewport.height();
const qreal totalWidth = normalizedViewport.width() * relativeWidth;
const qreal totalHeight = normalizedViewport.height() * relativeHeight;
if (qIsDefaultAspect(q->orientation())) {
m_sourceTextureRect = QRectF(totalOffsetLeft, totalOffsetTop,
totalWidth, totalHeight);
} else {
m_sourceTextureRect = QRectF(totalOffsetTop, totalOffsetLeft,
totalHeight, totalWidth);
}
}
if (m_surfaceFormat.scanLineDirection() == QVideoSurfaceFormat::BottomToTop) {
qreal top = m_sourceTextureRect.top();
m_sourceTextureRect.setTop(m_sourceTextureRect.bottom());
m_sourceTextureRect.setBottom(top);
}
if (m_surfaceFormat.isMirrored()) {
qreal left = m_sourceTextureRect.left();
m_sourceTextureRect.setLeft(m_sourceTextureRect.right());
m_sourceTextureRect.setRight(left);
}
}
QSGNode *QDeclarativeVideoBackend::updatePaintNode(QSGNode *oldNode,
QQuickItem::UpdatePaintNodeData *data)
{
Q_UNUSED(data);
QSGVideoNode *videoNode = static_cast<QSGVideoNode *>(oldNode);
QMutexLocker lock(&m_frameMutex);
if (m_frameChanged) {
if (videoNode && videoNode->pixelFormat() != m_frame.pixelFormat()) {
qCDebug(qLcVideo) << "updatePaintNode: deleting old video node because frame format changed";
delete videoNode;
videoNode = nullptr;
}
if (!m_frame.isValid()) {
qCDebug(qLcVideo) << "updatePaintNode: no frames yet";
m_frameChanged = false;
return nullptr;
}
if (!videoNode) {
// Get a node that supports our frame. The surface is irrelevant, our
// QSGVideoItemSurface supports (logically) anything.
updateGeometry();
videoNode = new QSGVideoNode(m_surfaceFormat);
qCDebug(qLcVideo) << "updatePaintNode: Video node created. Handle type:" << m_frame.handleType();
}
}
if (!videoNode) {
m_frameChanged = false;
m_frame = QVideoFrame();
return nullptr;
}
// Negative rotations need lots of %360
videoNode->setTexturedRectGeometry(m_renderedRect, m_sourceTextureRect,
qNormalizedOrientation(q->orientation()));
if (m_frameChanged) {
videoNode->setCurrentFrame(m_frame);
if ((q->flushMode() == QDeclarativeVideoOutput::FirstFrame && !m_frameOnFlush.isValid())
|| q->flushMode() == QDeclarativeVideoOutput::LastFrame) {
m_frameOnFlush = m_frame;
}
//don't keep the frame for more than really necessary
m_frameChanged = false;
m_frame = QVideoFrame();
}
return videoNode;
}
QVideoSink *QDeclarativeVideoBackend::videoSink() const
{
if (!m_sink) {
m_sink = new QVideoSink(q);
m_sink->setRhi(QQuickWindowPrivate::get(q->window())->rhi);
qRegisterMetaType<QVideoSurfaceFormat>();
QObject::connect(m_sink, SIGNAL(newVideoFrame(const QVideoFrame &)),
q, SLOT(_q_newFrame(const QVideoFrame &)), Qt::QueuedConnection);
}
return m_sink;
}
QRectF QDeclarativeVideoBackend::adjustedViewport() const
{
return m_surfaceFormat.viewport();
}
void QDeclarativeVideoBackend::present(const QVideoFrame &frame)
{
m_frameMutex.lock();
m_surfaceFormat = frame.surfaceFormat();
m_frame = frame.isValid() ? frame : m_frameOnFlush;
m_frameChanged = true;
m_frameMutex.unlock();
q->update();
}
void QDeclarativeVideoBackend::stop()
{
present(QVideoFrame());
}
QT_END_NAMESPACE
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