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Added support for non QMediaObject based VideoOutput sources.

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VideoOutput element checks first for mediaObject property of
source object and if it's not available it checks
for videoSurface property.

It allows to implement video frames generator and connect it
to optimized VideoOutput QML element.

Change-Id: I8ee618cf61b9d9100f25e742c631ea8724c188dc
Reviewed-by: Jonas Rabbe <jonas.rabbe@nokia.com>
This commit is contained in:
Dmytro Poplavskiy
2011-11-15 09:56:32 +10:00
committed by Qt by Nokia
parent d6c5d9faa6
commit 434075645a
2 changed files with 34 additions and 8 deletions
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34
src/imports/multimedia/qdeclarativevideooutput.cpp
View File

@@ -55,6 +55,7 @@
#include <QtCore/qmetaobject.h>
//#define DEBUG_VIDEOITEM
Q_DECLARE_METATYPE(QAbstractVideoSurface*)
class QSGVideoItemSurface : public QAbstractVideoSurface
{
@@ -153,6 +154,7 @@ private:
QDeclarativeVideoOutput::QDeclarativeVideoOutput(QQuickItem *parent) :
QQuickItem(parent),
m_sourceType(NoSource),
m_fillMode(PreserveAspectFit)
{
setFlag(ItemHasContents, true);
@@ -187,23 +189,39 @@ void QDeclarativeVideoOutput::setSource(QObject *source)
if (source == m_source.data())
return;
if (m_source)
if (m_source && m_sourceType == MediaObjectSource)
disconnect(0, m_source.data(), SLOT(_q_updateMediaObject()));
if (m_source && m_sourceType == VideoSurfaceSource)
m_source.data()->setProperty("videoSurface", QVariant::fromValue<QAbstractVideoSurface*>(0));
m_surface->stop();
m_source = source;
if (m_source) {
const QMetaObject *metaObject = m_source.data()->metaObject();
const QMetaProperty mediaObjectProperty = metaObject->property(
metaObject->indexOfProperty("mediaObject"));
if (mediaObjectProperty.hasNotifySignal()) {
QMetaMethod method = mediaObjectProperty.notifySignal();
QMetaObject::connect(m_source.data(), method.methodIndex(),
this, this->metaObject()->indexOfSlot("updateMediaObject()"),
Qt::DirectConnection, 0);
int mediaObjectPropertyIndex = metaObject->indexOfProperty("mediaObject");
if (mediaObjectPropertyIndex != -1) {
const QMetaProperty mediaObjectProperty = metaObject->property(mediaObjectPropertyIndex);
if (mediaObjectProperty.hasNotifySignal()) {
QMetaMethod method = mediaObjectProperty.notifySignal();
QMetaObject::connect(m_source.data(), method.methodIndex(),
this, this->metaObject()->indexOfSlot("updateMediaObject()"),
Qt::DirectConnection, 0);
}
m_sourceType = MediaObjectSource;
} else if (metaObject->indexOfProperty("videoSurface") != -1) {
m_source.data()->setProperty("videoSurface", QVariant::fromValue<QAbstractVideoSurface*>(m_surface));
m_sourceType = VideoSurfaceSource;
} else {
m_sourceType = NoSource;
}
} else {
m_sourceType = NoSource;
}
_q_updateMediaObject();

8
src/imports/multimedia/qdeclarativevideooutput_p.h
View File

@@ -94,10 +94,18 @@ private Q_SLOTS:
void _q_updateGeometry();
private:
enum SourceType {
NoSource,
MediaObjectSource,
VideoSurfaceSource
};
void present(const QVideoFrame &frame);
friend class QSGVideoItemSurface;
SourceType m_sourceType;
QWeakPointer<QObject> m_source;
QWeakPointer<QMediaObject> m_mediaObject;
QWeakPointer<QMediaService> m_service;