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#include <QDBusConnection>
#include <QDBusConnectionInterface>
#include "musicmanager.h"
MusicManager::MusicManager(WatchConnector *watch, QObject *parent)
: QObject(parent), watch(watch), _watcher(new QDBusServiceWatcher(this))
{
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)));
// Now set up the Pebble endpoint handler for music control commands
watch->setEndpointHandler(WatchConnector::watchMUSIC_CONTROL, [this](const QByteArray& data) {
handleMusicControl(WatchConnector::MusicControl(data.at(0)));
return true;
});
// If the watch disconnects, we will send the current metadata when it comes back.
connect(watch, &WatchConnector::connectedChanged,
this, &MusicManager::handleWatchConnected);
}
void MusicManager::switchToService(const QString &service)
{
if (_curService != service) {
logger()->debug() << "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()) {
logger()->debug() << "got mpris metadata from service" << _curService;
_curMetadata = qdbus_cast<QVariantMap>(reply.value().variant().value<QDBusArgument>());
} else {
logger()->error() << reply.error().message();
}
}
}
void MusicManager::sendCurrentMprisMetadata()
{
Q_ASSERT(watch->isConnected());
QString track = _curMetadata.value("xesam:title").toString().left(30);
QString album = _curMetadata.value("xesam:album").toString().left(30);
QString artist = _curMetadata.value("xesam:artist").toString().left(30);
logger()->debug() << "sending mpris metadata:" << track << album << artist;
watch->sendMusicNowPlaying(track, album, artist);
}
void MusicManager::callMprisMethod(const QString &method)
{
Q_ASSERT(!method.isEmpty());
Q_ASSERT(!_curService.isEmpty());
logger()->debug() << _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()) {
logger()->error() << "while calling mpris method on" << _curService << ":" << err.message();
}
}
void MusicManager::handleMusicControl(WatchConnector::MusicControl operation)
{
logger()->debug() << "operation from watch:" << operation;
if (_curService.isEmpty()) {
logger()->info() << "can't do any music operation, no mpris interface active";
return;
}
switch (operation) {
case WatchConnector::musicPLAY_PAUSE:
callMprisMethod("PlayPause");
break;
case WatchConnector::musicPAUSE:
callMprisMethod("Pause");
break;
case WatchConnector::musicPLAY:
callMprisMethod("Play");
break;
case WatchConnector::musicNEXT:
callMprisMethod("Next");
break;
case WatchConnector::musicPREVIOUS:
callMprisMethod("Previous");
break;
case WatchConnector::musicVOLUME_UP:
case WatchConnector::musicVOLUME_DOWN: {
QDBusConnection bus = QDBusConnection::sessionBus();
QDBusMessage call = QDBusMessage::createMethodCall(_curService, "/org/mpris/MediaPlayer2",
"org.freedesktop.DBus.Properties", "Get");
call << "org.mpris.MediaPlayer2.Player" << "Volume";
QDBusReply<QDBusVariant> volumeReply = bus.call(call);
if (volumeReply.isValid()) {
double volume = volumeReply.value().variant().toDouble();
if (operation == WatchConnector::musicVOLUME_UP) {
volume += 0.1;
}
else {
volume -= 0.1;
}
logger()->debug() << "Setting volume" << volume;
call = QDBusMessage::createMethodCall(_curService, "/org/mpris/MediaPlayer2", "org.freedesktop.DBus.Properties", "Set");
call << "org.mpris.MediaPlayer2.Player" << "Volume" << QVariant::fromValue(QDBusVariant(volume));
QDBusError err = QDBusConnection::sessionBus().call(call);
if (err.isValid()) {
logger()->error() << err.message();
}
} else {
logger()->error() << volumeReply.error().message();
}
}
break;
case WatchConnector::musicGET_NOW_PLAYING:
sendCurrentMprisMetadata();
break;
default:
logger()->warn() << "Operation" << operation << "not supported";
break;
}
}
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 (watch->isConnected()) {
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>());
logger()->debug() << "received new metadata" << metadata;
_curMetadata = metadata;
}
if (changed.contains("PlaybackStatus")) {
QString status = changed.value("PlaybackStatus").toString();
if (status == "Stopped") {
_curMetadata.clear();
}
}
if (watch->isConnected()) {
sendCurrentMprisMetadata();
}
switchToService(message().service());
}
void MusicManager::handleWatchConnected()
{
if (watch->isConnected()) {
sendCurrentMprisMetadata();
}
}
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