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// Copyright (C) 2023 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 "desktop_media_controller.h"
#include "desktop_media_controller_p.h"
#include "type_conversion.h"
#include "base/containers/contains.h"
#include "base/functional/callback.h"
#include "chrome/browser/media/webrtc/desktop_capturer_wrapper.h"
#include "chrome/browser/media/webrtc/native_desktop_media_list.h"
#include "content/public/browser/desktop_media_id.h"
#if QT_CONFIG(webengine_webrtc)
#include "content/public/browser/desktop_capture.h"
#endif // QT_CONFIG(webengine_webrtc)
namespace QtWebEngineCore {
namespace {
DesktopMediaList::Type toMediaListType(DesktopMediaType type)
{
switch (type) {
case DesktopMediaType::Screen:
return DesktopMediaList::Type::kScreen;
case DesktopMediaType::Window:
return DesktopMediaList::Type::kWindow;
default:
return DesktopMediaList::Type::kNone;
}
}
std::unique_ptr<DesktopMediaList> createMediaList(DesktopMediaType type)
{
#if QT_CONFIG(webengine_webrtc)
DesktopMediaList::Type listType = toMediaListType(type);
webrtc::DesktopCaptureOptions options = content::desktop_capture::CreateDesktopCaptureOptions();
switch (listType) {
case DesktopMediaList::Type::kScreen: {
std::unique_ptr<webrtc::DesktopCapturer> screenCapturer =
webrtc::DesktopCapturer::CreateScreenCapturer(options);
std::unique_ptr<DesktopCapturerWrapper> capturer =
std::make_unique<DesktopCapturerWrapper>(std::move(screenCapturer));
return std::make_unique<NativeDesktopMediaList>(listType, std::move(capturer));
}
case DesktopMediaList::Type::kWindow: {
std::unique_ptr<webrtc::DesktopCapturer> windowCapturer =
webrtc::DesktopCapturer::CreateWindowCapturer(options);
std::unique_ptr<DesktopCapturerWrapper> capturer =
std::make_unique<DesktopCapturerWrapper>(std::move(windowCapturer));
return std::make_unique<NativeDesktopMediaList>(
listType, std::move(capturer),
!content::desktop_capture::ShouldEnumerateCurrentProcessWindows());
}
default: {
Q_UNREACHABLE();
}
}
#else
return nullptr;
#endif // QT_CONFIG(webengine_webrtc)
}
} // namespace
class DesktopMediaListQtPrivate : public DesktopMediaListObserver
{
public:
DesktopMediaListQtPrivate(DesktopMediaType type, DesktopMediaListQt *qq);
void init();
void startUpdating();
const DesktopMediaList::Source& getSource(int index) const;
void OnSourceAdded(int index) override;
void OnSourceRemoved(int index) override;
void OnSourceMoved(int old_index, int new_index) override;
void OnSourceNameChanged(int index) override;
void OnSourceThumbnailChanged(int index) override { }
void OnSourcePreviewChanged(size_t index) override { }
void OnDelegatedSourceListSelection() override { }
void OnDelegatedSourceListDismissed() override { }
bool isInitialized;
std::unique_ptr<DesktopMediaList> mediaList;
DesktopMediaListQt *q_ptr;
Q_DECLARE_PUBLIC(DesktopMediaListQt)
};
DesktopMediaListQtPrivate::DesktopMediaListQtPrivate(DesktopMediaType type, DesktopMediaListQt *qq)
: isInitialized(false)
, mediaList(createMediaList(type))
, q_ptr(qq)
{
}
const DesktopMediaList::Source& DesktopMediaListQtPrivate::getSource(int index) const
{
return mediaList->GetSource(index);
}
void DesktopMediaListQtPrivate::init()
{
// Work around the asynchronous initialization of the source list.
// DesktopMediaList::Update populates the list and notifies the controller when it completes.
// This makes direct 'selectScreen/Window' calls possible from the frontend.
// Note: StartUpdating should be called after Update is completed as it can overwrite the
// internal cb.
base::OnceCallback<void()> onComplete = base::BindOnce(
[](DesktopMediaListQtPrivate *observer) {
observer->isInitialized = true;
Q_EMIT observer->q_ptr->initialized();
observer->startUpdating();
},
this);
mediaList->Update(std::move(onComplete));
}
void DesktopMediaListQtPrivate::startUpdating()
{
mediaList->StartUpdating(this);
}
void DesktopMediaListQtPrivate::OnSourceAdded(int index)
{
Q_Q(DesktopMediaListQt);
Q_EMIT q->sourceAdded(index);
}
void DesktopMediaListQtPrivate::OnSourceRemoved(int index)
{
Q_Q(DesktopMediaListQt);
Q_EMIT q->sourceRemoved(index);
}
void DesktopMediaListQtPrivate::OnSourceMoved(int old_index, int new_index)
{
Q_Q(DesktopMediaListQt);
Q_EMIT q->sourceMoved(old_index, new_index);
}
void DesktopMediaListQtPrivate::OnSourceNameChanged(int index)
{
Q_Q(DesktopMediaListQt);
Q_EMIT q->sourceNameChanged(index);
}
DesktopMediaListQt::DesktopMediaListQt(DesktopMediaType type)
: d(new DesktopMediaListQtPrivate(type, this))
{
}
DesktopMediaListQt::~DesktopMediaListQt() { }
QString DesktopMediaListQt::getSourceName(int index) const
{
const auto &source = d->getSource(index);
return toQt(source.name);
}
int DesktopMediaListQt::getSourceCount() const
{
return d->mediaList->GetSourceCount();
}
bool DesktopMediaListQt::isInitialized() const
{
return d->isInitialized;
}
DesktopMediaControllerPrivate::DesktopMediaControllerPrivate(
base::OnceCallback<void(content::DesktopMediaID)> doneCallback)
: doneCallback(std::move(doneCallback))
, screens(new DesktopMediaListQt(DesktopMediaType::Screen))
, windows(new DesktopMediaListQt(DesktopMediaType::Window))
{
}
void DesktopMediaControllerPrivate::selectScreen(int index)
{
const auto &source = screens->d->getSource(index);
std::move(doneCallback).Run(source.id);
}
void DesktopMediaControllerPrivate::selectWindow(int index)
{
const auto &source = windows->d->getSource(index);
std::move(doneCallback).Run(source.id);
}
void DesktopMediaControllerPrivate::cancel()
{
std::move(doneCallback).Run({});
}
DesktopMediaController::DesktopMediaController(DesktopMediaControllerPrivate *dd)
: d(dd)
{
// Make sure both lists are populated before sending the request.
DesktopMediaListQt *screens = DesktopMediaController::screens();
DesktopMediaListQt *windows = DesktopMediaController::windows();
QObject::connect(screens, &DesktopMediaListQt::initialized, [windows, this]() {
if (windows->isInitialized())
Q_EMIT mediaListsInitialized();
});
QObject::connect(windows, &DesktopMediaListQt::initialized, [screens, this]() {
if (screens->isInitialized())
Q_EMIT mediaListsInitialized();
});
screens->d->init();
windows->d->init();
}
DesktopMediaController::~DesktopMediaController()
{
}
void DesktopMediaController::selectScreen(int index)
{
d->selectScreen(index);
}
void DesktopMediaController::selectWindow(int index)
{
d->selectWindow(index);
}
void DesktopMediaController::cancel()
{
d->cancel();
}
DesktopMediaListQt *DesktopMediaController::screens() const
{
return d->screens.data();
}
DesktopMediaListQt *DesktopMediaController::windows() const
{
return d->windows.data();
}
} // namespace QtWebEngineCore
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