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#include <QtDBus>
#include "musicmanager.h"
MusicManager::MusicManager(WatchConnector *watch, QObject *parent)
: QObject(parent), watch(watch)
{
QDBusConnection bus = QDBusConnection::sessionBus();
QDBusConnectionInterface *bus_iface = bus.interface();
// Listen for MPRIS signals from every player
bus.connect("", "/org/mpris/MediaPlayer2", "org.freedesktop.DBus.Properties", "PropertiesChanged",
this, SLOT(handleMprisPropertiesChanged(QString,QMap<QString,QVariant>,QStringList)));
// Listen for D-Bus name registered signals to see if a MPRIS service comes up
connect(bus_iface, &QDBusConnectionInterface::serviceOwnerChanged,
this, &MusicManager::handleServiceOwnerChanged);
// But also try to find an already active MPRIS service
const QStringList &services = bus_iface->registeredServiceNames();
foreach (QString service, services) {
if (service.startsWith("org.mpris.MediaPlayer2.")) {
switchToService(service);
break;
}
}
// Set up watch endpoint handler for music control
watch->setEndpointHandler(WatchConnector::watchMUSIC_CONTROL, [this](const QByteArray& data) {
musicControl(WatchConnector::MusicControl(data.at(0)));
return true;
});
connect(watch, &WatchConnector::connectedChanged,
this, &MusicManager::handleWatchConnected);
}
void MusicManager::musicControl(WatchConnector::MusicControl operation)
{
logger()->debug() << "operation from watch:" << operation;
if (_curService.isEmpty()) {
logger()->info() << "No mpris interface active";
return;
}
QString method;
switch(operation) {
case WatchConnector::musicPLAY_PAUSE:
method = "PlayPause";
break;
case WatchConnector::musicPAUSE:
method = "Pause";
break;
case WatchConnector::musicPLAY:
method = "Play";
break;
case WatchConnector::musicNEXT:
method = "Next";
break;
case WatchConnector::musicPREVIOUS:
method = "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();
}
}
return;
case WatchConnector::musicGET_NOW_PLAYING:
setMprisMetadata(_curMetadata);
return;
case WatchConnector::musicSEND_NOW_PLAYING:
default:
logger()->warn() << "Operation" << operation << "not supported";
return;
}
if (method.isEmpty()) {
logger()->error() << "Requested unsupported operation" << operation;
return;
}
logger()->debug() << operation << "->" << method;
QDBusMessage call = QDBusMessage::createMethodCall(_curService, "/org/mpris/MediaPlayer2", "org.mpris.MediaPlayer2.Player", method);
QDBusError err = QDBusConnection::sessionBus().call(call);
if (err.isValid()) {
logger()->error() << err.message();
}
}
void MusicManager::switchToService(const QString &service)
{
if (_curService != service) {
logger()->debug() << "switching to mpris service" << service;
_curService = service;
}
}
void MusicManager::setMprisMetadata(const QVariantMap &metadata)
{
_curMetadata = metadata;
QString track = metadata.value("xesam:title").toString();
QString album = metadata.value("xesam:album").toString();
QString artist = metadata.value("xesam:artist").toString();
logger()->debug() << "new mpris metadata:" << track << album << artist;
if (watch->isConnected()) {
watch->sendMusicNowPlaying(track, album, artist);
}
}
void MusicManager::handleServiceRegistered(const QString &service)
{
if (service.startsWith("org.mpris.MediaPlayer2.")) {
if (_curService.isEmpty()) {
switchToService(service);
}
}
}
void MusicManager::handleServiceUnregistered(const QString &service)
{
if (service == _curService) {
// Oops! Losing the current MPRIS service
// We must assume it's been closed and thus remove current metadata
setMprisMetadata(QVariantMap());
switchToService(QString());
}
}
void MusicManager::handleServiceOwnerChanged(const QString &name, const QString &oldOwner, const QString &newOwner)
{
Q_UNUSED(oldOwner);
if (newOwner.isEmpty()) {
handleServiceUnregistered(name);
} else {
handleServiceRegistered(name);
}
}
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;
setMprisMetadata(metadata);
}
if (changed.contains("PlaybackStatus")) {
QString status = changed.value("PlaybackStatus").toString();
if (status == "Stopped") {
setMprisMetadata(QVariantMap());
}
}
switchToService(message().service());
}
void MusicManager::handleWatchConnected()
{
if (watch->isConnected()) {
if (!_curService.isEmpty()) {
QDBusMessage call = QDBusMessage::createMethodCall(_curService, "/org/mpris/MediaPlayer2", "org.freedesktop.DBus.Properties", "Get");
call << "org.mpris.MediaPlayer2.Player" << "Metadata";
QDBusReply<QDBusVariant> metadata = QDBusConnection::sessionBus().call(call);
if (metadata.isValid()) {
setMprisMetadata(qdbus_cast<QVariantMap>(metadata.value().variant().value<QDBusArgument>()));
} else {
logger()->error() << metadata.error().message();
setMprisMetadata(QVariantMap());
}
}
}
}
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