qvideosink.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qvideosink.h"
 
#include "qvideoframeformat.h"
#include "qvideoframe.h"
#include "qmediaplayer.h"
#include "qmediacapturesession.h"
 
#include <qvariant.h>
#include <qpainter.h>
#include <qmatrix4x4.h>
#include <QDebug>
#include <private/qplatformmediaintegration_p.h>
#include <private/qplatformvideosink_p.h>
 
QT_BEGIN_NAMESPACE
 
class QVideoSinkPrivate {
public:
    QVideoSinkPrivate(QVideoSink *q)
        : q_ptr(q)
    {
        auto maybeVideoSink = QPlatformMediaIntegration::instance()->createVideoSink(q);
        if (maybeVideoSink) {
            videoSink = maybeVideoSink.value();
        } else {
            qWarning() << "Failed to create QVideoSink" << maybeVideoSink.error();
        }
    }
    ~QVideoSinkPrivate()
    {
        delete videoSink;
    }
    void unregisterSource()
    {
        if (!source)
            return;
        auto *old = source;
        source = nullptr;
        if (auto *player = qobject_cast<QMediaPlayer *>(old))
            player->setVideoSink(nullptr);
        else if (auto *capture = qobject_cast<QMediaCaptureSession *>(old))
            capture->setVideoSink(nullptr);
    }
 
    QVideoSink *q_ptr = nullptr;
    QPlatformVideoSink *videoSink = nullptr;
    QObject *source = nullptr;
    QRhi *rhi = nullptr;
};
 
QVideoSink::QVideoSink(QObject *parent)
    : QObject(parent),
    d(new QVideoSinkPrivate(this))
{
    qRegisterMetaType<QVideoFrame>();
}
 
QVideoSink::~QVideoSink()
{
    disconnect(this);
    d->unregisterSource();
    delete d;
}
 
QRhi *QVideoSink::rhi() const
{
    return d->rhi;
}
 
void QVideoSink::setRhi(QRhi *rhi)
{
    if (d->rhi == rhi)
        return;
    d->rhi = rhi;
    if (d->videoSink)
        d->videoSink->setRhi(rhi);
}
 
QPlatformVideoSink *QVideoSink::platformVideoSink() const
{
    return d->videoSink;
}
 
QVideoFrame QVideoSink::videoFrame() const
{
    return d->videoSink ? d->videoSink->currentVideoFrame() : QVideoFrame{};
}
 
void QVideoSink::setVideoFrame(const QVideoFrame &frame)
{
    if (d->videoSink)
        d->videoSink->setVideoFrame(frame);
}
 
QString QVideoSink::subtitleText() const
{
    return d->videoSink ? d->videoSink->subtitleText() : QString{};
}
 
void QVideoSink::setSubtitleText(const QString &subtitle)
{
    if (d->videoSink)
        d->videoSink->setSubtitleText(subtitle);
}
 
QSize QVideoSink::videoSize() const
{
    return d->videoSink ? d->videoSink->nativeSize() : QSize{};
}
 
void QVideoSink::setSource(QObject *source)
{
    if (d->source == source)
        return;
    if (source)
        d->unregisterSource();
    d->source = source;
}
 
QT_END_NAMESPACE
 
#include "moc_qvideosink.cpp"