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#include <QtDBus/QDBusConnectionInterface>
#include "musicmanager.h"
MusicManager::MusicManager(ToqManager *toq) :
QObject(toq), _toq(toq), _watcher(new QDBusServiceWatcher(this)), _isPlayerVisible(false)
{
QDBusConnection bus = QDBusConnection::sessionBus();
QDBusConnectionInterface *bus_iface = bus.interface();
// This watcher will be used to find when the current MPRIS service dies
// (and thus we must clear the metadata)
_watcher->setConnection(bus);
connect(_watcher, &QDBusServiceWatcher::serviceOwnerChanged,
this, &MusicManager::handleMprisServiceOwnerChanged);
// Try to find an active MPRIS service to initially connect to
const QStringList &services = bus_iface->registeredServiceNames();
foreach (QString service, services) {
if (service.startsWith("org.mpris.MediaPlayer2.")) {
switchToService(service);
fetchMetadataFromService();
// The watch is not connected by this point,
// so we don't send the current metadata.
break;
}
}
// Even if we didn't find any service, we still listen for metadataChanged signals
// from every MPRIS-compatible player
// If such a signal comes in, we will connect to the source service for that signal
bus.connect("", "/org/mpris/MediaPlayer2", "org.freedesktop.DBus.Properties", "PropertiesChanged",
this, SLOT(handleMprisPropertiesChanged(QString,QMap<QString,QVariant>,QStringList)));
_toq->setEndpointListener(ToqConnection::MusicEndpoint, this);
}
void MusicManager::handleMessage(const ToqConnection::Message &msg)
{
Q_ASSERT(msg.destination == ToqConnection::MusicEndpoint);
switch (msg.type) {
case 0:
handleGetPlayerStatusMessage(msg);
_isPlayerVisible = true;
break;
case 1:
if (!_curService.isEmpty()) callMprisMethod("Play");
// TODO Reply with new metadata!
break;
case 2:
if (!_curService.isEmpty()) callMprisMethod("Pause");
break;
case 3:
if (!_curService.isEmpty()) callMprisMethod("Next");
break;
case 4:
if (!_curService.isEmpty()) callMprisMethod("Previous");
break;
case 0x8004: // Player closing?
_isPlayerVisible = false;
break;
case 5: //Volume up/down
case 6:
// Not yet implemented
default:
qWarning() << "Unknown message type" << msg.type;
break;
}
}
void MusicManager::handleGetPlayerStatusMessage(const ToqConnection::Message &msg)
{
QJsonObject reply;
reply.insert("result", int(0));
reply.insert("description", QLatin1String("PlayerStatus Request received"));
reply.insert("artist", _curMetadata.value("xesam:artist").toString());
reply.insert("album", _curMetadata.value("xesam:album").toString());
reply.insert("title", _curMetadata.value("xesam:title").toString());
reply.insert("state", _curPlaybackStatus == "Playing" ? QLatin1String("playing") : QLatin1String("paused"));
reply.insert("album-art", QLatin1String(""));
reply.insert("playlist", int(1)); // TODO
reply.insert("player", _curService);
reply.insert("version", QLatin1String("1.0"));
reply.insert("controller", QLatin1String("SERIAL"));
_toq->sendReply(msg, 0x4000, reply);
}
void MusicManager::switchToService(const QString &service)
{
if (_curService != service) {
qDebug() << "switching to mpris service" << service;
_curService = service;
if (_curService.isEmpty()) {
_watcher->setWatchedServices(QStringList());
} else {
_watcher->setWatchedServices(QStringList(_curService));
}
}
}
void MusicManager::fetchMetadataFromService()
{
_curMetadata.clear();
if (!_curService.isEmpty()) {
QDBusMessage call = QDBusMessage::createMethodCall(_curService, "/org/mpris/MediaPlayer2", "org.freedesktop.DBus.Properties", "Get");
call << "org.mpris.MediaPlayer2.Player" << "Metadata";
QDBusReply<QDBusVariant> reply = QDBusConnection::sessionBus().call(call);
if (reply.isValid()) {
qDebug() << "got mpris metadata from service" << _curService;
_curMetadata = qdbus_cast<QVariantMap>(reply.value().variant().value<QDBusArgument>());
} else {
qWarning() << reply.error().message();
}
}
}
void MusicManager::sendCurrentMprisMetadata()
{
Q_ASSERT(_toq->isConnected());
QJsonObject obj;
fillWithMetadata(obj);
_toq->sendMessage(ToqConnection::MusicEndpoint, ToqConnection::MusicEndpoint + 1, 0x8003, obj);
}
void MusicManager::fillWithMetadata(QJsonObject &obj)
{
obj.insert("artist", _curMetadata.value("xesam:artist").toString());
obj.insert("album", _curMetadata.value("xesam:album").toString());
obj.insert("title", _curMetadata.value("xesam:title").toString());
obj.insert("state", _curPlaybackStatus == "Playing" ? QLatin1String("playing") : QLatin1String("paused"));
obj.insert("album-art", QLatin1String(""));
obj.insert("playlist", int(1)); // TODO
obj.insert("player", _curService);
obj.insert("version", QLatin1String("1.0"));
obj.insert("controller", QLatin1String("SERIAL"));
}
void MusicManager::callMprisMethod(const QString &method)
{
Q_ASSERT(!method.isEmpty());
Q_ASSERT(!_curService.isEmpty());
qDebug() << _curService << "->" << method;
QDBusConnection bus = QDBusConnection::sessionBus();
QDBusMessage call = QDBusMessage::createMethodCall(_curService,
"/org/mpris/MediaPlayer2",
"org.mpris.MediaPlayer2.Player",
method);
QDBusError err = bus.call(call);
if (err.isValid()) {
qWarning() << "while calling mpris method on" << _curService << ":" << err.message();
}
}
void MusicManager::handleMprisServiceOwnerChanged(const QString &name, const QString &oldOwner, const QString &newOwner)
{
Q_UNUSED(oldOwner);
if (name == _curService && newOwner.isEmpty()) {
// Oops, current service is going away
switchToService(QString());
_curMetadata.clear();
if (_toq->isConnected() && _isPlayerVisible) {
sendCurrentMprisMetadata();
}
}
}
void MusicManager::handleMprisPropertiesChanged(const QString &interface, const QMap<QString, QVariant> &changed, const QStringList &invalidated)
{
Q_ASSERT(calledFromDBus());
Q_UNUSED(interface);
Q_UNUSED(invalidated);
if (changed.contains("Metadata")) {
QVariantMap metadata = qdbus_cast<QVariantMap>(changed.value("Metadata").value<QDBusArgument>());
qDebug() << "received new metadata" << metadata;
_curMetadata = metadata;
}
if (changed.contains("PlaybackStatus")) {
_curPlaybackStatus = changed.value("PlaybackStatus").toString();
if (_curPlaybackStatus == "Stopped") {
_curMetadata.clear();
}
}
if (_toq->isConnected() && _isPlayerVisible) {
sendCurrentMprisMetadata();
}
switchToService(message().service());
}
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