tdf#145735 avmedia qt: Use QtMultimedia for Qt 6 media playback

Similar to the way that GTK 4's native facilities for
video playback are used for the gtk4 VCL plugin, initially
added in commit

        commit d0a527ec09516bc7215baf229adb90cd21ffa27a
        Author: Caolán McNamara <caolanm@redhat.com>
        Date:   Thu Feb 10 12:55:18 2022 +0000

            first cut at using Gtk4 built in video playback

, implement media playback using QtMultimedia for the
Qt 6 based VCL plugins (qt6/kf6) via a new service
"com.sun.star.comp.avmedia.Manager_Qt".

Video playback with the mechanism used for qt5 no
longer works with qt6, as "qwidget5videosink"
that gets used on Wayland for qt5 wasn't ported
to Qt 6 and is unmaintained, s. the commit message of

        commit 88d57cf241209ffec9eaed3e523942ab51af6db6
        Author: Michael Weghorn <m.weghorn@posteo.de>
        Date:   Wed Sep 29 11:09:51 2021 +0200

            qt6: Add a qt6 VCL plugin

for more details. Additionally, this also doesn't work
properly any more on X11/with the xcb Qt QPA platform, see
tdf#145735 comment 7.

Instead of using GStreamer directly, let Qt handle
the low-level stuff by using the QtMultimedia module [1]
instead.

This adds a new dependency on QtMultimedia.
For building, this requires installing the Qt 6 QtMultimedia
development headers (e.g. package `qt6-multimedia-dev`
on current Debian testing).

Except for WASM, the use of QtMultimedia is enabled by
default when building with autogen options `--enable-qt6`
or `--enable-kf6`, but can explicitly be disabled using
`--disable-qt6-multimedia`.

In tests with the qt6 VCL plugin on Debian testing, with a
sample presentation containing an embedded
video, attachment 145517 from tdf#120452, video playback
generally works for both, the xcb and the wayland
Qt QPA platforms:

* Video and audio are played as expected on the external
  screen in presentation mode when using the presenter
  console
* Video and audio playback work in non-presentation
  mode by clicking on the video and using the controls
  in the Impress sidebar (play, pause,...).

However, the following issues were observed with
the current implementation:

* There's an odd frame/margin around the video.
* In non-presentation mode, the placeholder
  shown until the video gets started using the controls
  in the sidebar is just an "audio icon", not a frame
  from the actual video. (This might be related to the
  fact that `QtPlayer::createFrameGrabber` currently
  returns an empty reference.)
* At least on Wayland (issue not observed with
  QT_QPA_PLATFORM=xcb so far), when using the presenter
  console,   video playback in the presenter console (i.e. on the
  non-presentation screen) is unreliable: The video
  sometimes shows, but sometimes doesn't. At least the
  (more important) one on the presentation screen was
  reliably shown in my tests, however.

Tested with git dev versions of qtbase
(as of commit 8d5e7d50d8dbf1ad79bd8ff9f6ef6028eba481c9),
qtwayland (as of commit 6f0ebd916f176f6fbe35af28caeb52b62768ac94)
and qtmultimedia (as of commit
264b7e8d7d5683252102b5e5149685c8b8a70c2d).

[1] https://doc.qt.io/qt-6/qtmultimedia-index.html

Change-Id: I29c3c7ded01c61b49b192fa5c313d8a92c942185
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/167869
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Jenkins

15 files changed, 641 insertions, 1 deletions

diff --git a/Repository.mk b/Repository.mk
index b6ebf64dcf39..b86eb1bc5646 100644
--- a/Repository.mk
+++ b/Repository.mk
@@ -656,6 +656,7 @@ $(eval $(call gb_Helper_register_libraries_for_install,PLAINLIBS_OOO,ooo, \
     $(call gb_Helper_optional,AVMEDIA, \
         $(if $(ENABLE_GSTREAMER_1_0),avmediagst) \
         $(if $(ENABLE_GTK4),avmediagtk) \
+        $(if $(ENABLE_QT6_MULTIMEDIA),avmediaqt6) \
         $(if $(filter WNT,$(OS)),avmediawin) \
     ) \
 	cached1 \
diff --git a/avmedia/CustomTarget_avmediaqt6_moc.mk b/avmedia/CustomTarget_avmediaqt6_moc.mk
new file mode 100644
index 000000000000..0f9ca1af23b6
--- /dev/null
+++ b/avmedia/CustomTarget_avmediaqt6_moc.mk
@@ -0,0 +1,24 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_CustomTarget_CustomTarget,avmedia/source/qt6))
+
+$(call gb_CustomTarget_get_target,avmedia/source/qt6) : \
+	$(gb_CustomTarget_workdir)/avmedia/source/qt6/QtPlayer.moc
+
+
+$(gb_CustomTarget_workdir)/avmedia/source/qt6/%.moc : \
+		$(SRCDIR)/avmedia/source/qt6/%.hxx \
+		| $(gb_CustomTarget_workdir)/avmedia/source/qt6/.dir
+	$(call gb_Output_announce,$(subst $(WORKDIR)/,,$@),$(true),MOC,1)
+	$(call gb_Trace_StartRange,$(subst $(WORKDIR)/,,$@),MOC)
+	$(MOC6) $< -o $@
+	$(call gb_Trace_EndRange,$(subst $(WORKDIR)/,,$@),MOC)
+
+# vim: set noet sw=4:
diff --git a/avmedia/Library_avmediaqt6.mk b/avmedia/Library_avmediaqt6.mk
new file mode 100644
index 000000000000..a1acb7568d02
--- /dev/null
+++ b/avmedia/Library_avmediaqt6.mk
@@ -0,0 +1,44 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+
+$(eval $(call gb_Library_Library,avmediaqt6))
+
+$(eval $(call gb_Library_set_componentfile,avmediaqt6,avmedia/source/qt6/avmediaqt,services))
+
+$(eval $(call gb_Library_use_custom_headers,avmediaqt6,avmedia/source/qt6))
+
+$(eval $(call gb_Library_set_include,avmediaqt6,\
+	$$(INCLUDE) \
+	-I$(SRCDIR)/avmedia/source/inc \
+	-I$(SRCDIR)/avmedia/source/gstreamer \
+))
+
+$(eval $(call gb_Library_use_externals,avmediaqt6,\
+	qt6 \
+))
+
+$(eval $(call gb_Library_use_sdk_api,avmediaqt6))
+
+$(eval $(call gb_Library_use_libraries,avmediaqt6,\
+	comphelper \
+	cppu \
+	cppuhelper \
+	sal \
+	salhelper \
+	tl \
+	vcl \
+))
+
+$(eval $(call gb_Library_add_exception_objects,avmediaqt6,\
+	avmedia/source/qt6/gstwindow \
+	avmedia/source/qt6/QtManager \
+	avmedia/source/qt6/QtPlayer \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/avmedia/Module_avmedia.mk b/avmedia/Module_avmedia.mk
index 8a1132077210..f0c6acf00331 100644
--- a/avmedia/Module_avmedia.mk
+++ b/avmedia/Module_avmedia.mk
@@ -31,6 +31,13 @@ $(eval $(call gb_Module_add_targets,avmedia,\
 ))
 endif
 
+ifneq ($(ENABLE_QT6_MULTIMEDIA),)
+$(eval $(call gb_Module_add_targets,avmedia,\
+	CustomTarget_avmediaqt6_moc \
+	Library_avmediaqt6 \
+))
+endif
+
 ifeq ($(OS),MACOSX)
 $(eval $(call gb_Module_add_targets,avmedia,\
 	Library_avmediaMacAVF \
diff --git a/avmedia/source/qt6/QtManager.cxx b/avmedia/source/qt6/QtManager.cxx
new file mode 100644
index 000000000000..b4a8d523bd7a
--- /dev/null
+++ b/avmedia/source/qt6/QtManager.cxx
@@ -0,0 +1,62 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <com/sun/star/uno/XComponentContext.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <rtl/ref.hxx>
+#include <tools/urlobj.hxx>
+
+#include "QtManager.hxx"
+#include "QtPlayer.hxx"
+
+namespace avmedia::qt
+{
+QtManager::QtManager() {}
+
+QtManager::~QtManager() {}
+
+css::uno::Reference<css::media::XPlayer> SAL_CALL QtManager::createPlayer(const OUString& rURL)
+{
+    const INetURLObject aURL(rURL);
+    OUString sMainURL = aURL.GetMainURL(INetURLObject::DecodeMechanism::Unambiguous);
+
+    rtl::Reference<QtPlayer> xPlayer(new QtPlayer);
+    if (!xPlayer->create(sMainURL))
+    {
+        xPlayer->dispose();
+        xPlayer.clear();
+    }
+    return xPlayer;
+}
+
+OUString SAL_CALL QtManager::getImplementationName()
+{
+    return u"com.sun.star.comp.media.Manager_Qt"_ustr;
+}
+
+sal_Bool SAL_CALL QtManager::supportsService(const OUString& ServiceName)
+{
+    return cppu::supportsService(this, ServiceName);
+}
+
+css::uno::Sequence<OUString> SAL_CALL QtManager::getSupportedServiceNames()
+{
+    return { u"com.sun.star.media.Manager"_ustr };
+}
+
+} // namespace
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+com_sun_star_comp_media_Manager_Qt_get_implementation(css::uno::XComponentContext*,
+                                                      css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new avmedia::qt::QtManager());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/avmedia/source/qt6/QtManager.hxx b/avmedia/source/qt6/QtManager.hxx
new file mode 100644
index 000000000000..830c1ed0c671
--- /dev/null
+++ b/avmedia/source/qt6/QtManager.hxx
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/media/XManager.hpp>
+#include <cppuhelper/implbase.hxx>
+
+namespace avmedia::qt
+{
+class QtManager : public cppu::WeakImplHelper<css::media::XManager, css::lang::XServiceInfo>
+{
+public:
+    explicit QtManager();
+    virtual ~QtManager() override;
+
+    virtual css::uno::Reference<css::media::XPlayer>
+        SAL_CALL createPlayer(const OUString& aURL) override;
+
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+    virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/avmedia/source/qt6/QtPlayer.cxx b/avmedia/source/qt6/QtPlayer.cxx
new file mode 100644
index 000000000000..1ad675f37d5c
--- /dev/null
+++ b/avmedia/source/qt6/QtPlayer.cxx
@@ -0,0 +1,328 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <sal/config.h>
+
+#include <QtCore/QUrl>
+#include <QtMultimedia/QAudioOutput>
+#include <QtMultimediaWidgets/QVideoWidget>
+#include <QtWidgets/QLayout>
+
+#include <cppuhelper/supportsservice.hxx>
+#include <sal/log.hxx>
+#include <rtl/string.hxx>
+#include <tools/link.hxx>
+#include <vcl/BitmapTools.hxx>
+#include <vcl/graph.hxx>
+#include <vcl/svapp.hxx>
+#include <vcl/syschild.hxx>
+#include <vcl/sysdata.hxx>
+#include <vcl/timer.hxx>
+
+#include <gstwindow.hxx>
+#include "QtPlayer.hxx"
+
+#include <QtPlayer.moc>
+
+using namespace ::com::sun::star;
+
+namespace
+{
+inline QString toQString(const OUString& rStr)
+{
+    return QString::fromUtf16(rStr.getStr(), rStr.getLength());
+}
+}
+
+namespace avmedia::qt
+{
+QtPlayer::QtPlayer()
+    : QtPlayer_BASE(m_aMutex)
+    , m_lListener(m_aMutex)
+{
+}
+
+bool QtPlayer::create(const OUString& rURL)
+{
+    const QUrl aQUrl(toQString(rURL));
+    if (!aQUrl.isValid() || !aQUrl.isLocalFile())
+        return false;
+
+    m_xMediaPlayer = std::make_unique<QMediaPlayer>();
+    m_xMediaPlayer->setSource(aQUrl);
+    QAudioOutput* pAudioOutput = new QAudioOutput;
+    pAudioOutput->setVolume(50);
+    m_xMediaPlayer->setAudioOutput(pAudioOutput);
+
+    return true;
+}
+
+void SAL_CALL QtPlayer::start()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    assert(m_xMediaPlayer);
+    m_xMediaPlayer->play();
+}
+
+void SAL_CALL QtPlayer::stop()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    assert(m_xMediaPlayer);
+    // don't use QMediaPlayer::stop because XPlayer::stop should leave the position unchanged
+    m_xMediaPlayer->pause();
+}
+
+sal_Bool SAL_CALL QtPlayer::isPlaying()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+#if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
+    assert(m_xMediaPlayer);
+    return m_xMediaPlayer->isPlaying();
+#else
+    return false;
+#endif
+}
+
+double SAL_CALL QtPlayer::getDuration()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    assert(m_xMediaPlayer);
+    return m_xMediaPlayer->duration() / 1000.0;
+}
+
+void SAL_CALL QtPlayer::setMediaTime(double fTime)
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    assert(m_xMediaPlayer);
+    m_xMediaPlayer->setPosition(fTime * 1000);
+}
+
+double SAL_CALL QtPlayer::getMediaTime()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    assert(m_xMediaPlayer);
+    return m_xMediaPlayer->position() / 1000.0;
+}
+
+void SAL_CALL QtPlayer::setPlaybackLoop(sal_Bool bSet)
+{
+    assert(m_xMediaPlayer);
+    const int nLoops = bSet ? QMediaPlayer::Infinite : QMediaPlayer::Once;
+    m_xMediaPlayer->setLoops(nLoops);
+}
+
+sal_Bool SAL_CALL QtPlayer::isPlaybackLoop()
+{
+    assert(m_xMediaPlayer);
+    return m_xMediaPlayer->loops() == QMediaPlayer::Infinite;
+}
+
+void SAL_CALL QtPlayer::setVolumeDB(sal_Int16 nVolumeDB)
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    // range is -40 for silence to 0 for full volume
+    const sal_Int16 nVolume = std::clamp<sal_Int16>(nVolumeDB, -40, 0);
+    double fValue = (nVolume + 40) / 40.0;
+    assert(m_xMediaPlayer);
+    QAudioOutput* pAudioOutput = m_xMediaPlayer->audioOutput();
+    assert(pAudioOutput);
+    pAudioOutput->setVolume(fValue);
+}
+
+sal_Int16 SAL_CALL QtPlayer::getVolumeDB()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    assert(m_xMediaPlayer);
+    QAudioOutput* pAudioOutput = m_xMediaPlayer->audioOutput();
+    assert(pAudioOutput);
+
+    double fVolume = pAudioOutput->volume();
+    return (fVolume * 40) - 40;
+}
+
+void SAL_CALL QtPlayer::setMute(sal_Bool bSet)
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    assert(m_xMediaPlayer);
+    QAudioOutput* pAudioOutput = m_xMediaPlayer->audioOutput();
+    assert(pAudioOutput);
+    pAudioOutput->setMuted(bSet);
+}
+
+sal_Bool SAL_CALL QtPlayer::isMute()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    assert(m_xMediaPlayer);
+    QAudioOutput* pAudioOutput = m_xMediaPlayer->audioOutput();
+    assert(pAudioOutput);
+    return pAudioOutput->isMuted();
+}
+
+awt::Size SAL_CALL QtPlayer::getPreferredPlayerWindowSize()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    awt::Size aSize(0, 0);
+    return aSize;
+}
+
+uno::Reference<::media::XPlayerWindow>
+    SAL_CALL QtPlayer::createPlayerWindow(const uno::Sequence<uno::Any>& rArguments)
+{
+    osl::MutexGuard aGuard(m_aMutex);
+
+    if (rArguments.getLength() <= 2)
+    {
+        uno::Reference<::media::XPlayerWindow> xRet = new ::avmedia::gstreamer::Window;
+        return xRet;
+    }
+
+    sal_IntPtr pIntPtr = 0;
+    rArguments[2] >>= pIntPtr;
+    SystemChildWindow* pParentWindow = reinterpret_cast<SystemChildWindow*>(pIntPtr);
+    if (!pParentWindow)
+        return nullptr;
+
+    const SystemEnvData* pParentEnvData = pParentWindow->GetSystemData();
+    if (!pParentEnvData)
+        return nullptr;
+
+    QWidget* pParent = static_cast<QWidget*>(pParentEnvData->pWidget);
+    QVideoWidget* pVideoWidget = new QVideoWidget(pParent);
+    pVideoWidget->setAspectRatioMode(Qt::IgnoreAspectRatio);
+    pVideoWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
+
+    assert(!m_xMediaPlayer->videoOutput() && "Video widget already set.");
+    m_xMediaPlayer->setVideoOutput(pVideoWidget);
+
+    // retrieve the layout (which is set in the QtObjectWidget ctor)
+    QLayout* pLayout = pParent->layout();
+    assert(pLayout);
+    pLayout->addWidget(pVideoWidget);
+
+    uno::Reference<::media::XPlayerWindow> xRet = new ::avmedia::gstreamer::Window;
+    return xRet;
+}
+
+uno::Reference<media::XFrameGrabber> SAL_CALL QtPlayer::createFrameGrabber() { return nullptr; }
+
+void SAL_CALL
+QtPlayer::addPlayerListener(const css::uno::Reference<css::media::XPlayerListener>& rListener)
+{
+    m_lListener.addInterface(cppu::UnoType<css::media::XPlayerListener>::get(), rListener);
+    if (isReadyToPlay())
+    {
+        css::lang::EventObject aEvent;
+        aEvent.Source = getXWeak();
+        rListener->preferredPlayerWindowSizeAvailable(aEvent);
+    }
+    else
+    {
+        installNotify();
+    }
+}
+
+void SAL_CALL
+QtPlayer::removePlayerListener(const css::uno::Reference<css::media::XPlayerListener>& rListener)
+{
+    m_lListener.removeInterface(cppu::UnoType<css::media::XPlayerListener>::get(), rListener);
+}
+
+OUString SAL_CALL QtPlayer::getImplementationName()
+{
+    return u"com.sun.star.comp.avmedia.Player_Qt"_ustr;
+}
+
+sal_Bool SAL_CALL QtPlayer::supportsService(const OUString& rServiceName)
+{
+    return cppu::supportsService(this, rServiceName);
+}
+
+uno::Sequence<OUString> SAL_CALL QtPlayer::getSupportedServiceNames()
+{
+    return { u"com.sun.star.media.Player_Qt"_ustr };
+}
+
+void SAL_CALL QtPlayer::disposing()
+{
+    osl::MutexGuard aGuard(m_aMutex);
+    stop();
+    QtPlayer_BASE::disposing();
+}
+
+QtPlayer::~QtPlayer()
+{
+    // ensure output objects get deleted as QMediaPlayer doesn't take ownership of them
+    std::unique_ptr<QObject> xVideoWidget(m_xMediaPlayer->videoOutput());
+    std::unique_ptr<QAudioOutput> xAudioOutput(m_xMediaPlayer->audioOutput());
+    m_xMediaPlayer.reset();
+}
+
+bool QtPlayer::isReadyToPlay()
+{
+    assert(m_xMediaPlayer);
+    QMediaPlayer::MediaStatus eStatus = m_xMediaPlayer->mediaStatus();
+    return eStatus == QMediaPlayer::BufferingMedia || eStatus == QMediaPlayer::BufferedMedia
+           || eStatus == QMediaPlayer::LoadedMedia || eStatus == QMediaPlayer::EndOfMedia;
+}
+
+void QtPlayer::installNotify()
+{
+    connect(m_xMediaPlayer.get(), &QMediaPlayer::mediaStatusChanged, this,
+            &QtPlayer::notifyIfReady);
+}
+
+void QtPlayer::uninstallNotify()
+{
+    disconnect(m_xMediaPlayer.get(), &QMediaPlayer::mediaStatusChanged, this,
+               &QtPlayer::notifyIfReady);
+}
+
+void QtPlayer::notifyIfReady(QMediaPlayer::MediaStatus)
+{
+    if (isReadyToPlay())
+    {
+        rtl::Reference<QtPlayer> xThis(this);
+        xThis->notifyListeners();
+        xThis->uninstallNotify();
+    }
+}
+
+void QtPlayer::notifyListeners()
+{
+    comphelper::OInterfaceContainerHelper2* pContainer
+        = m_lListener.getContainer(cppu::UnoType<css::media::XPlayerListener>::get());
+    if (!pContainer)
+        return;
+
+    css::lang::EventObject aEvent;
+    aEvent.Source = getXWeak();
+
+    comphelper::OInterfaceIteratorHelper2 pIterator(*pContainer);
+    while (pIterator.hasMoreElements())
+    {
+        css::uno::Reference<css::media::XPlayerListener> xListener(
+            static_cast<css::media::XPlayerListener*>(pIterator.next()));
+        xListener->preferredPlayerWindowSizeAvailable(aEvent);
+    }
+}
+
+} // namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/avmedia/source/qt6/QtPlayer.hxx b/avmedia/source/qt6/QtPlayer.hxx
new file mode 100644
index 000000000000..212f297fdc8b
--- /dev/null
+++ b/avmedia/source/qt6/QtPlayer.hxx
@@ -0,0 +1,84 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <QtMultimedia/QMediaPlayer>
+
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/media/XPlayer.hpp>
+#include <com/sun/star/media/XPlayerNotifier.hpp>
+#include <comphelper/multicontainer2.hxx>
+#include <cppuhelper/compbase.hxx>
+#include <cppuhelper/basemutex.hxx>
+
+namespace avmedia::qt
+{
+typedef cppu::WeakComponentImplHelper<css::media::XPlayer, css::media::XPlayerNotifier,
+                                      css::lang::XServiceInfo>
+    QtPlayer_BASE;
+
+class QtPlayer final : public QObject, public cppu::BaseMutex, public QtPlayer_BASE
+{
+    Q_OBJECT
+
+public:
+    explicit QtPlayer();
+    ~QtPlayer() override;
+
+    bool create(const OUString& rURL);
+
+    // XPlayer
+    virtual void SAL_CALL start() override;
+    virtual void SAL_CALL stop() override;
+    virtual sal_Bool SAL_CALL isPlaying() override;
+    virtual double SAL_CALL getDuration() override;
+    virtual void SAL_CALL setMediaTime(double fTime) override;
+    virtual double SAL_CALL getMediaTime() override;
+    virtual void SAL_CALL setPlaybackLoop(sal_Bool bSet) override;
+    virtual sal_Bool SAL_CALL isPlaybackLoop() override;
+    virtual void SAL_CALL setVolumeDB(sal_Int16 nVolumeDB) override;
+    virtual sal_Int16 SAL_CALL getVolumeDB() override;
+    virtual void SAL_CALL setMute(sal_Bool bSet) override;
+    virtual sal_Bool SAL_CALL isMute() override;
+    virtual css::awt::Size SAL_CALL getPreferredPlayerWindowSize() override;
+    virtual css::uno::Reference<css::media::XPlayerWindow>
+        SAL_CALL createPlayerWindow(const css::uno::Sequence<css::uno::Any>& rArgs) override;
+    virtual css::uno::Reference<css::media::XFrameGrabber> SAL_CALL createFrameGrabber() override;
+
+    // XPlayerNotifier
+    virtual void SAL_CALL
+    addPlayerListener(const css::uno::Reference<css::media::XPlayerListener>& rListener) override;
+    virtual void SAL_CALL removePlayerListener(
+        const css::uno::Reference<css::media::XPlayerListener>& rListener) override;
+
+    // XServiceInfo
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+    virtual css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
+
+    virtual void SAL_CALL disposing() final override;
+
+private:
+    std::unique_ptr<QMediaPlayer> m_xMediaPlayer;
+    comphelper::OMultiTypeInterfaceContainerHelper2 m_lListener;
+
+    bool isReadyToPlay();
+
+    void installNotify();
+    void uninstallNotify();
+    void notifyListeners();
+    void notifyIfReady(QMediaPlayer::MediaStatus eStatus);
+};
+
+} // namespace avmedia::qt
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/avmedia/source/qt6/avmediaqt.component b/avmedia/source/qt6/avmediaqt.component
new file mode 100644
index 000000000000..bea9a4309e44
--- /dev/null
+++ b/avmedia/source/qt6/avmediaqt.component
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+-->
+<component loader="com.sun.star.loader.SharedLibrary" environment="@CPPU_ENV@"
+    xmlns="http://openoffice.org/2010/uno-components">
+  <implementation name="com.sun.star.comp.media.Manager_Qt"
+    constructor="com_sun_star_comp_media_Manager_Qt_get_implementation">
+    <service name="com.sun.star.comp.avmedia.Manager_Qt"/>
+  </implementation>
+</component>
diff --git a/avmedia/source/qt6/gstwindow.cxx b/avmedia/source/qt6/gstwindow.cxx
new file mode 100644
index 000000000000..48c70df98e7d
--- /dev/null
+++ b/avmedia/source/qt6/gstwindow.cxx
@@ -0,0 +1,12 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include "../gstreamer/gstwindow.cxx"
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/avmedia/source/viewer/mediawindow_impl.cxx b/avmedia/source/viewer/mediawindow_impl.cxx
index 502adbc124e6..ec7a08ff744f 100644
--- a/avmedia/source/viewer/mediawindow_impl.cxx
+++ b/avmedia/source/viewer/mediawindow_impl.cxx
@@ -184,8 +184,11 @@ uno::Reference<media::XPlayer> MediaWindowImpl::createPlayer(const OUString& rUR
     //if (!pMimeType || *pMimeType == AVMEDIA_MIMETYPE_COMMON)
     {
         uno::Reference<uno::XComponentContext> xContext(::comphelper::getProcessComponentContext());
-        if (Application::GetToolkitName() == "gtk4")
+        const OUString sToolkitName = Application::GetToolkitName();
+        if (sToolkitName == "gtk4")
             xPlayer = createPlayer(rURL, u"com.sun.star.comp.avmedia.Manager_Gtk"_ustr, xContext);
+        else if (sToolkitName.startsWith(u"kf6") || sToolkitName.startsWith(u"qt6"))
+            xPlayer = createPlayer(rURL, u"com.sun.star.comp.avmedia.Manager_Qt"_ustr, xContext);
         else
             xPlayer = createPlayer(rURL, u"" AVMEDIA_MANAGER_SERVICE_NAME ""_ustr, xContext);
     }
diff --git a/config_host.mk.in b/config_host.mk.in
index e303f5945d99..92ae275b43d5 100644
--- a/config_host.mk.in
+++ b/config_host.mk.in
@@ -211,6 +211,7 @@ export ENABLE_PDFIUM=@ENABLE_PDFIUM@
 export ENABLE_POPPLER=@ENABLE_POPPLER@
 export ENABLE_QT5=@ENABLE_QT5@
 export ENABLE_QT6=@ENABLE_QT6@
+export ENABLE_QT6_MULTIMEDIA=@ENABLE_QT6_MULTIMEDIA@
 export ENABLE_KF5=@ENABLE_KF5@
 export ENABLE_KF6=@ENABLE_KF6@
 export ENABLE_GTK3_KDE5=@ENABLE_GTK3_KDE5@
diff --git a/config_host/config_vclplug.h.in b/config_host/config_vclplug.h.in
index 2334288cd49d..3009bac93afd 100644
--- a/config_host/config_vclplug.h.in
+++ b/config_host/config_vclplug.h.in
@@ -29,6 +29,7 @@ Settings about which desktops have support enabled.
  */
 #define USE_HEADLESS_CODE 0
 #define ENABLE_GSTREAMER_1_0 0
+#define ENABLE_QT6_MULTIMEDIA 0
 #define QT5_HAVE_GOBJECT 0
 #define QT5_USING_X11 0
 #define QT6_USING_X11 0
diff --git a/configure.ac b/configure.ac
index 59f1c97dbef7..88dd106f574a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1815,6 +1815,10 @@ AC_ARG_ENABLE(qt6,
          available.]),
 ,)
 
+AC_ARG_ENABLE(qt6-multimedia,
+    AS_HELP_STRING([--disable-qt6-multimedia],
+        [Determines whether to enable media playback using QtMultimedia when using the qt6/kf6 VCL plugins.]))
+
 AC_ARG_ENABLE(kf5,
     AS_HELP_STRING([--enable-kf5],
         [Determines whether to use Qt5/KF5 vclplug on platforms where Qt5 and
@@ -13419,6 +13423,7 @@ dnl ===================================================================
 QT6_CFLAGS=""
 QT6_LIBS=""
 QT6_PLATFORMS_SRCDIR=""
+ENABLE_QT6_MULTIMEDIA=""
 if test \( "$test_kf6" = "yes" -a "$ENABLE_KF6" = "TRUE" \) -o \
         \( "$test_qt6" = "yes" -a "$ENABLE_QT6" = "TRUE" \)
 then
@@ -13505,6 +13510,15 @@ then
     QT6_LIBS="-L$qt6_libdir -lQt6Core -lQt6Gui -lQt6Widgets -lQt6Network"
     if test "$_os" = "Emscripten"; then
         QT6_LIBS="$QT6_LIBS -lQt6BundledPcre2 -lQt6BundledZLIB -L${qt6_platformsdir} -lqwasm -sGL_ENABLE_GET_PROC_ADDRESS"
+    else
+        if ! test "$enable_qt6_multimedia" = "no"; then
+            if ! test -r "$qt6_incdir/QtMultimediaWidgets/QVideoWidget"; then
+                AC_MSG_ERROR([Qt 6 QMultimedia not found.])
+                break
+            fi
+            ENABLE_QT6_MULTIMEDIA=TRUE
+            QT6_LIBS="$QT6_LIBS -lQt6Multimedia -lQt6MultimediaWidgets"
+        fi
     fi
 
     if test "$USING_X11" = TRUE; then
@@ -13540,6 +13554,7 @@ AC_SUBST(QT6_CFLAGS)
 AC_SUBST(QT6_LIBS)
 AC_SUBST(MOC6)
 AC_SUBST(QT6_PLATFORMS_SRCDIR)
+AC_SUBST(ENABLE_QT6_MULTIMEDIA)
 
 dnl ===================================================================
 dnl KF5 Integration
@@ -13705,6 +13720,10 @@ fi
 AC_SUBST(KF6_CFLAGS)
 AC_SUBST(KF6_LIBS)
 
+if test "$enable_qt6_multimedia" = "yes" -a "$ENABLE_QT6" != "TRUE"; then
+    AC_MSG_ERROR([--enable-qt6-multimedia requires --enable-qt6 or --enable-kf6])
+fi
+
 dnl ===================================================================
 dnl Test whether to include Evolution 2 support
 dnl ===================================================================
diff --git a/vcl/qt5/QtObject.cxx b/vcl/qt5/QtObject.cxx
index fbdc8e9b625e..cd133e095ff5 100644
--- a/vcl/qt5/QtObject.cxx
+++ b/vcl/qt5/QtObject.cxx
@@ -26,6 +26,7 @@
 #include <QtGui/QGuiApplication>
 #include <QtGui/QKeyEvent>
 #include <QtGui/QMouseEvent>
+#include <QtWidgets/QVBoxLayout>
 
 QtObject::QtObject(QtFrame* pParent, bool bShow)
     : m_pParent(pParent)
@@ -111,6 +112,10 @@ QtObjectWidget::QtObjectWidget(QtObject& rParent)
     assert(m_rParent.frame() && m_rParent.frame()->GetQWidget());
     setAttribute(Qt::WA_NoSystemBackground);
     setAttribute(Qt::WA_OpaquePaintEvent);
+
+    // set layout, used for video playback, see QtPlayer::createPlayerWindow
+    QVBoxLayout* layout = new QVBoxLayout;
+    setLayout(layout);
 }
 
 void QtObjectWidget::focusInEvent(QFocusEvent*)