File indexing completed on 2024-04-21 16:13:08

 /*
     SPDX-FileCopyrightText: 2022 Aleix Pol Gonzalez <aleixpol@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
 */
 
 #include "RecordMe.h"
 #include <QLoggingCategory>
 #include <QQmlApplicationEngine>
 #include <QQmlContext>
 #include <QTimer>
 
 #include "xdp_dbus_screencast_interface.h"
 
 Q_DECLARE_METATYPE(Stream)
 
 QDebug operator<<(QDebug debug, const Stream& plug)
 {
     QDebugStateSaver saver(debug);
     debug.nospace() << "Stream(id: " << plug.id << ", opts: " << plug.opts << ')';
     return debug;
 }
 
 
 const QDBusArgument &operator<<(const QDBusArgument &argument, const Stream &/*stream*/)
 {
     argument.beginStructure();
 //     argument << stream.id << stream.opts;
     argument.endStructure();
     return argument;
 }
 
 const QDBusArgument &operator>>(const QDBusArgument &argument, Stream &stream)
 {
     argument.beginStructure();
     argument >> stream.id >> stream.opts;
     argument.endStructure();
     return argument;
 }
 
 const QDBusArgument &operator>>(const QDBusArgument &argument, QVector<Stream> &stream)
 {
     argument.beginArray();
     while ( !argument.atEnd() ) {
         Stream element;
         argument >> element;
         stream.append( element );
     }
     argument.endArray();
     return argument;
 }
 
 RecordMe::RecordMe(QObject* parent)
     : QObject(parent)
     , iface(new OrgFreedesktopPortalScreenCastInterface(
         QLatin1String("org.freedesktop.portal.Desktop"), QLatin1String("/org/freedesktop/portal/desktop"), QDBusConnection::sessionBus(), this))
     , m_durationTimer(new QTimer(this))
     , m_handleToken(QStringLiteral("RecordMe%1").arg(QRandomGenerator::global()->generate()))
     , m_engine(new QQmlApplicationEngine(this))
 {
     m_engine->rootContext()->setContextProperty(QStringLiteral("app"), this);
     m_engine->load(QUrl(QStringLiteral("qrc:/main.qml")));
 
     // create session
     const auto sessionParameters = QVariantMap {
         { QLatin1String("session_handle_token"), m_handleToken },
         { QLatin1String("handle_token"), m_handleToken }
     };
     auto sessionReply = iface->CreateSession(sessionParameters);
     sessionReply.waitForFinished();
     if (!sessionReply.isValid()) {
         qWarning("Couldn't initialize the remote control session");
         exit(1);
         return;
     }
 
     const bool ret = QDBusConnection::sessionBus().connect(QString(),
                                                            sessionReply.value().path(),
                                                            QLatin1String("org.freedesktop.portal.Request"),
                                                            QLatin1String("Response"),
                                                            this,
                                                            SLOT(response(uint, QVariantMap)));
     if (!ret) {
         qWarning() << "failed to create session";
         exit(2);
         return;
     }
 
     qDBusRegisterMetaType<Stream>();
     qDBusRegisterMetaType<QVector<Stream>>();
 
     m_durationTimer->setSingleShot(true);
 }
 
 RecordMe::~RecordMe() = default;
 
 void RecordMe::init(const QDBusObjectPath& path)
 {
     m_path = path;
     {
         uint32_t cursor_mode;
         if (iface->availableCursorModes() & Metadata) {
             cursor_mode = Metadata;
         } else {
             cursor_mode = Hidden;
         }
         const QVariantMap sourcesParameters = {{QLatin1String("handle_token"), m_handleToken},
                                                {QLatin1String("types"), iface->availableSourceTypes()},
                                                {QLatin1String("multiple"), false}, // for now?
                                                {QLatin1String("cursor_mode"), uint(cursor_mode)}};
 
         auto reply = iface->SelectSources(m_path, sourcesParameters);
         reply.waitForFinished();
 
         if (reply.isError()) {
             qWarning() << "Could not select sources" << reply.error();
             exit(1);
             return;
         }
         qDebug() << "select sources done" << reply.value().path();
     }
 }
 
 void RecordMe::response(uint code, const QVariantMap& results)
 {
     if (code > 0) {
         qWarning() << "error!!!" << code << results;
         exit(666);
         return;
     }
 
     const auto streamsIt = results.constFind(QStringLiteral("streams"));
     if (streamsIt != results.constEnd()) {
         QVector<Stream> streams;
         streamsIt->value<QDBusArgument>() >> streams;
 
         handleStreams(streams);
         return;
     }
 
     const auto handleIt = results.constFind(QStringLiteral("session_handle"));
     if (handleIt != results.constEnd()) {
         init(QDBusObjectPath(handleIt->toString()));
         return;
     }
 
     qDebug() << "params" << results << code;
     if (results.isEmpty()) {
         start();
         return;
     }
 }
 
 void RecordMe::start()
 {
     const QVariantMap startParameters = {
         { QLatin1String("handle_token"), m_handleToken }
     };
 
     auto reply = iface->Start(m_path, QStringLiteral("org.freedesktop.RecordMe"), startParameters);
     reply.waitForFinished();
 
     if (reply.isError()) {
         qWarning() << "Could not start stream" << reply.error();
         exit(1);
         return;
     }
     qDebug() << "started!" << reply.value().path();
 }
 
 void RecordMe::handleStreams(const QVector<Stream> &streams)
 {
     const QVariantMap startParameters = {
         { QLatin1String("handle_token"), m_handleToken }
     };
 
     auto reply = iface->OpenPipeWireRemote(m_path, startParameters);
     reply.waitForFinished();
 
     if (reply.isError()) {
         qWarning() << "Could not start stream" << reply.error();
         exit(1);
         return;
     }
 
     const int fd = reply.value().takeFileDescriptor();
 
     const auto roots = m_engine->rootObjects();
     for (const auto &stream : streams) {
         for (auto root : roots) {
             auto mo = root->metaObject();
             qDebug() << "feeding..." << stream.id << fd;
             mo->invokeMethod(root, "addStream", Q_ARG(QVariant, QVariant::fromValue<quint32>(stream.id)), Q_ARG(QVariant, m_handleToken), Q_ARG(QVariant, fd));
         }
     }
 }
 
 void RecordMe::setDuration(int duration)
 {
     m_durationTimer->setInterval(duration);
 }