kdeconnect-kde/plugins/mpriscontrol/mpriscontrolplugin.cpp
Alexander Lohnau 405f61bf85 Discard unused params more elegantly
By commenting out the parameter name, we get compile-time checks
Also, we can omit them for slots and Qt will not forward the parameters.

In case we had TODOs next to the code, I kept the Q_UNUSED statements
for now.
2023-08-05 20:22:18 +00:00

401 lines
16 KiB
C++

/**
* SPDX-FileCopyrightText: 2013 Albert Vaca <albertvaka@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#include "mpriscontrolplugin.h"
#include <QDBusArgument>
#include <QDBusMessage>
#include <QDBusReply>
#include <QDBusServiceWatcher>
#include <qdbusconnectioninterface.h>
#include <KPluginFactory>
#include <core/device.h>
#include <dbushelper.h>
#include "generated/systeminterfaces/dbusproperties.h"
#include "generated/systeminterfaces/mprisplayer.h"
#include "generated/systeminterfaces/mprisroot.h"
#include "plugin_mpris_debug.h"
K_PLUGIN_CLASS_WITH_JSON(MprisControlPlugin, "kdeconnect_mpriscontrol.json")
MprisPlayer::MprisPlayer(const QString &serviceName, const QString &dbusObjectPath, const QDBusConnection &busConnection)
: m_serviceName(serviceName)
, m_propertiesInterface(new OrgFreedesktopDBusPropertiesInterface(serviceName, dbusObjectPath, busConnection))
, m_mediaPlayer2PlayerInterface(new OrgMprisMediaPlayer2PlayerInterface(serviceName, dbusObjectPath, busConnection))
{
m_mediaPlayer2PlayerInterface->setTimeout(500);
}
MprisControlPlugin::MprisControlPlugin(QObject *parent, const QVariantList &args)
: KdeConnectPlugin(parent, args)
, prevVolume(-1)
{
m_watcher = new QDBusServiceWatcher(QString(), QDBusConnection::sessionBus(), QDBusServiceWatcher::WatchForOwnerChange, this);
// TODO: QDBusConnectionInterface::serviceOwnerChanged is deprecated, maybe query org.freedesktop.DBus directly?
connect(QDBusConnection::sessionBus().interface(), &QDBusConnectionInterface::serviceOwnerChanged, this, &MprisControlPlugin::serviceOwnerChanged);
// Add existing interfaces
const QStringList services = QDBusConnection::sessionBus().interface()->registeredServiceNames().value();
for (const QString &service : services) {
// The string doesn't matter, it just needs to be empty/non-empty
serviceOwnerChanged(service, QLatin1String(""), QStringLiteral("1"));
}
}
// Copied from the mpris2 dataengine in the plasma-workspace repository
void MprisControlPlugin::serviceOwnerChanged(const QString &serviceName, const QString &oldOwner, const QString &newOwner)
{
if (!serviceName.startsWith(QStringLiteral("org.mpris.MediaPlayer2.")))
return;
if (serviceName.startsWith(QStringLiteral("org.mpris.MediaPlayer2.kdeconnect.")))
return;
// playerctld is a only a proxy to other media players, and can thus safely be ignored
if (serviceName == QStringLiteral("org.mpris.MediaPlayer2.playerctld"))
return;
if (!oldOwner.isEmpty()) {
qCDebug(KDECONNECT_PLUGIN_MPRIS) << "MPRIS service" << serviceName << "just went offline";
removePlayer(serviceName);
}
if (!newOwner.isEmpty()) {
qCDebug(KDECONNECT_PLUGIN_MPRIS) << "MPRIS service" << serviceName << "just came online";
addPlayer(serviceName);
}
}
void MprisControlPlugin::addPlayer(const QString &service)
{
const QString mediaPlayerObjectPath = QStringLiteral("/org/mpris/MediaPlayer2");
OrgMprisMediaPlayer2Interface iface(service, mediaPlayerObjectPath, QDBusConnection::sessionBus());
QString identity = iface.identity();
if (identity.isEmpty()) {
identity = service.mid(sizeof("org.mpris.MediaPlayer2"));
}
QString uniqueName = identity;
for (int i = 2; playerList.contains(uniqueName); ++i) {
uniqueName = identity + QLatin1String(" [") + QString::number(i) + QLatin1Char(']');
}
MprisPlayer player(service, mediaPlayerObjectPath, QDBusConnection::sessionBus());
playerList.insert(uniqueName, player);
connect(player.propertiesInterface(), &OrgFreedesktopDBusPropertiesInterface::PropertiesChanged, this, &MprisControlPlugin::propertiesChanged);
connect(player.mediaPlayer2PlayerInterface(), &OrgMprisMediaPlayer2PlayerInterface::Seeked, this, &MprisControlPlugin::seeked);
qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Mpris addPlayer" << service << "->" << uniqueName;
sendPlayerList();
}
void MprisControlPlugin::seeked(qlonglong position)
{
// qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Seeked in player";
OrgMprisMediaPlayer2PlayerInterface *mediaPlayer2PlayerInterface = (OrgMprisMediaPlayer2PlayerInterface *)sender();
const auto end = playerList.constEnd();
const auto it = std::find_if(playerList.constBegin(), end, [mediaPlayer2PlayerInterface](const MprisPlayer &player) {
return (player.mediaPlayer2PlayerInterface() == mediaPlayer2PlayerInterface);
});
if (it == end) {
qCWarning(KDECONNECT_PLUGIN_MPRIS) << "Seeked signal received for no longer tracked service" << mediaPlayer2PlayerInterface->service();
return;
}
const QString &playerName = it.key();
NetworkPacket np(PACKET_TYPE_MPRIS,
{{QStringLiteral("pos"), position / 1000}, // Send milis instead of nanos
{QStringLiteral("player"), playerName}});
sendPacket(np);
}
void MprisControlPlugin::propertiesChanged(const QString & /*propertyInterface*/, const QVariantMap &properties)
{
OrgFreedesktopDBusPropertiesInterface *propertiesInterface = (OrgFreedesktopDBusPropertiesInterface *)sender();
const auto end = playerList.constEnd();
const auto it = std::find_if(playerList.constBegin(), end, [propertiesInterface](const MprisPlayer &player) {
return (player.propertiesInterface() == propertiesInterface);
});
if (it == end) {
qCWarning(KDECONNECT_PLUGIN_MPRIS) << "PropertiesChanged signal received for no longer tracked service" << propertiesInterface->service();
return;
}
OrgMprisMediaPlayer2PlayerInterface *const mediaPlayer2PlayerInterface = it.value().mediaPlayer2PlayerInterface();
const QString &playerName = it.key();
NetworkPacket np(PACKET_TYPE_MPRIS);
bool somethingToSend = false;
if (properties.contains(QStringLiteral("Volume"))) {
int volume = (int)(properties[QStringLiteral("Volume")].toDouble() * 100);
if (volume != prevVolume) {
np.set(QStringLiteral("volume"), volume);
prevVolume = volume;
somethingToSend = true;
}
}
if (properties.contains(QStringLiteral("Metadata"))) {
QDBusArgument aux = qvariant_cast<QDBusArgument>(properties[QStringLiteral("Metadata")]);
QVariantMap nowPlayingMap;
aux >> nowPlayingMap;
mprisPlayerMetadataToNetworkPacket(np, nowPlayingMap);
somethingToSend = true;
}
if (properties.contains(QStringLiteral("PlaybackStatus"))) {
bool playing = (properties[QStringLiteral("PlaybackStatus")].toString() == QLatin1String("Playing"));
np.set(QStringLiteral("isPlaying"), playing);
somethingToSend = true;
}
if (properties.contains(QStringLiteral("LoopStatus"))) {
np.set(QStringLiteral("loopStatus"), properties[QStringLiteral("LoopStatus")]);
somethingToSend = true;
}
if (properties.contains(QStringLiteral("Shuffle"))) {
np.set(QStringLiteral("shuffle"), properties[QStringLiteral("Shuffle")].toBool());
somethingToSend = true;
}
if (properties.contains(QStringLiteral("CanPause"))) {
np.set(QStringLiteral("canPause"), properties[QStringLiteral("CanPause")].toBool());
somethingToSend = true;
}
if (properties.contains(QStringLiteral("CanPlay"))) {
np.set(QStringLiteral("canPlay"), properties[QStringLiteral("CanPlay")].toBool());
somethingToSend = true;
}
if (properties.contains(QStringLiteral("CanGoNext"))) {
np.set(QStringLiteral("canGoNext"), properties[QStringLiteral("CanGoNext")].toBool());
somethingToSend = true;
}
if (properties.contains(QStringLiteral("CanGoPrevious"))) {
np.set(QStringLiteral("canGoPrevious"), properties[QStringLiteral("CanGoPrevious")].toBool());
somethingToSend = true;
}
if (somethingToSend) {
np.set(QStringLiteral("player"), playerName);
// Always also update the position if can seek
bool canSeek = mediaPlayer2PlayerInterface->canSeek();
np.set(QStringLiteral("canSeek"), canSeek);
if (canSeek) {
long long pos = mediaPlayer2PlayerInterface->position();
np.set(QStringLiteral("pos"), pos / 1000); // Send milis instead of nanos
}
sendPacket(np);
}
}
void MprisControlPlugin::removePlayer(const QString &serviceName)
{
const auto end = playerList.end();
const auto it = std::find_if(playerList.begin(), end, [serviceName](const MprisPlayer &player) {
return (player.serviceName() == serviceName);
});
if (it == end) {
qCWarning(KDECONNECT_PLUGIN_MPRIS) << "Could not find player for serviceName" << serviceName;
return;
}
const QString &playerName = it.key();
qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Mpris removePlayer" << serviceName << "->" << playerName;
playerList.erase(it);
sendPlayerList();
}
bool MprisControlPlugin::sendAlbumArt(const NetworkPacket &np)
{
const QString player = np.get<QString>(QStringLiteral("player"));
auto it = playerList.find(player);
bool valid_player = (it != playerList.end());
if (!valid_player) {
return false;
}
// Get mpris information
auto &mprisInterface = *it.value().mediaPlayer2PlayerInterface();
QVariantMap nowPlayingMap = mprisInterface.metadata();
// Check if the supplied album art url indeed belongs to this mpris player
QUrl playerAlbumArtUrl{nowPlayingMap[QStringLiteral("mpris:artUrl")].toString()};
QString requestedAlbumArtUrl = np.get<QString>(QStringLiteral("albumArtUrl"));
if (!playerAlbumArtUrl.isValid() || playerAlbumArtUrl != QUrl(requestedAlbumArtUrl)) {
return false;
}
// Only support sending local files
if (playerAlbumArtUrl.scheme() != QStringLiteral("file")) {
return false;
}
// Open the file to send
QSharedPointer<QFile> art{new QFile(playerAlbumArtUrl.toLocalFile())};
// Send the album art as payload
NetworkPacket answer(PACKET_TYPE_MPRIS);
answer.set(QStringLiteral("transferringAlbumArt"), true);
answer.set(QStringLiteral("player"), player);
answer.set(QStringLiteral("albumArtUrl"), requestedAlbumArtUrl);
answer.setPayload(art, art->size());
sendPacket(answer);
return true;
}
void MprisControlPlugin::receivePacket(const NetworkPacket &np)
{
if (np.has(QStringLiteral("playerList"))) {
return; // Whoever sent this is an mpris client and not an mpris control!
}
if (np.has(QStringLiteral("albumArtUrl"))) {
sendAlbumArt(np);
return;
}
// Send the player list
const QString player = np.get<QString>(QStringLiteral("player"));
auto it = playerList.find(player);
bool valid_player = (it != playerList.end());
if (!valid_player || np.get<bool>(QStringLiteral("requestPlayerList"))) {
sendPlayerList();
if (!valid_player) {
return;
}
}
// Do something to the mpris interface
const QString &serviceName = it.value().serviceName();
// turn from pointer to reference to keep the patch diff small,
// actual patch would change all "mprisInterface." into "mprisInterface->"
auto &mprisInterface = *it.value().mediaPlayer2PlayerInterface();
if (np.has(QStringLiteral("action"))) {
const QString &action = np.get<QString>(QStringLiteral("action"));
// qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Calling action" << action << "in" << serviceName;
// TODO: Check for valid actions, currently we trust anything the other end sends us
mprisInterface.call(action);
}
if (np.has(QStringLiteral("setLoopStatus"))) {
const QString &loopStatus = np.get<QString>(QStringLiteral("setLoopStatus"));
qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Setting loopStatus" << loopStatus << "to" << serviceName;
mprisInterface.setLoopStatus(loopStatus);
}
if (np.has(QStringLiteral("setShuffle"))) {
bool shuffle = np.get<bool>(QStringLiteral("setShuffle"));
qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Setting shuffle" << shuffle << "to" << serviceName;
mprisInterface.setShuffle(shuffle);
}
if (np.has(QStringLiteral("setVolume"))) {
double volume = np.get<int>(QStringLiteral("setVolume")) / 100.f;
qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Setting volume" << volume << "to" << serviceName;
mprisInterface.setVolume(volume);
}
if (np.has(QStringLiteral("Seek"))) {
int offset = np.get<int>(QStringLiteral("Seek"));
// qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Seeking" << offset << "to" << serviceName;
mprisInterface.Seek(offset);
}
if (np.has(QStringLiteral("SetPosition"))) {
qlonglong position = np.get<qlonglong>(QStringLiteral("SetPosition"), 0) * 1000;
qlonglong seek = position - mprisInterface.position();
// qCDebug(KDECONNECT_PLUGIN_MPRIS) << "Setting position by seeking" << seek << "to" << serviceName;
mprisInterface.Seek(seek);
}
// Send something read from the mpris interface
NetworkPacket answer(PACKET_TYPE_MPRIS);
bool somethingToSend = false;
if (np.get<bool>(QStringLiteral("requestNowPlaying"))) {
QVariantMap nowPlayingMap = mprisInterface.metadata();
mprisPlayerMetadataToNetworkPacket(answer, nowPlayingMap);
qlonglong pos = mprisInterface.position();
answer.set(QStringLiteral("pos"), pos / 1000);
bool playing = (mprisInterface.playbackStatus() == QLatin1String("Playing"));
answer.set(QStringLiteral("isPlaying"), playing);
answer.set(QStringLiteral("canPause"), mprisInterface.canPause());
answer.set(QStringLiteral("canPlay"), mprisInterface.canPlay());
answer.set(QStringLiteral("canGoNext"), mprisInterface.canGoNext());
answer.set(QStringLiteral("canGoPrevious"), mprisInterface.canGoPrevious());
answer.set(QStringLiteral("canSeek"), mprisInterface.canSeek());
// LoopStatus is an optional field
if (mprisInterface.property("LoopStatus").isValid()) {
const QString &loopStatus = mprisInterface.loopStatus();
answer.set(QStringLiteral("loopStatus"), loopStatus);
}
// Shuffle is an optional field
if (mprisInterface.property("Shuffle").isValid()) {
bool shuffle = mprisInterface.shuffle();
answer.set(QStringLiteral("shuffle"), shuffle);
}
somethingToSend = true;
}
if (np.get<bool>(QStringLiteral("requestVolume"))) {
int volume = (int)(mprisInterface.volume() * 100);
answer.set(QStringLiteral("volume"), volume);
somethingToSend = true;
}
if (somethingToSend) {
answer.set(QStringLiteral("player"), player);
sendPacket(answer);
}
}
void MprisControlPlugin::sendPlayerList()
{
NetworkPacket np(PACKET_TYPE_MPRIS);
np.set(QStringLiteral("playerList"), playerList.keys());
np.set(QStringLiteral("supportAlbumArtPayload"), true);
sendPacket(np);
}
void MprisControlPlugin::mprisPlayerMetadataToNetworkPacket(NetworkPacket &np, const QVariantMap &nowPlayingMap) const
{
QString title = nowPlayingMap[QStringLiteral("xesam:title")].toString();
QString artist = nowPlayingMap[QStringLiteral("xesam:artist")].toStringList().join(QLatin1String(", "));
QString album = nowPlayingMap[QStringLiteral("xesam:album")].toString();
QString albumArtUrl = nowPlayingMap[QStringLiteral("mpris:artUrl")].toString();
QUrl fileUrl = nowPlayingMap[QStringLiteral("xesam:url")].toUrl();
if (title.isEmpty() && artist.isEmpty() && fileUrl.isLocalFile()) {
title = fileUrl.fileName();
QStringList splitUrl = fileUrl.path().split(QDir::separator());
if (album.isEmpty() && splitUrl.size() > 1) {
album = splitUrl.at(splitUrl.size() - 2);
}
}
np.set(QStringLiteral("title"), title);
np.set(QStringLiteral("artist"), artist);
np.set(QStringLiteral("album"), album);
np.set(QStringLiteral("albumArtUrl"), albumArtUrl);
bool hasLength = false;
long long length = nowPlayingMap[QStringLiteral("mpris:length")].toLongLong(&hasLength) / 1000; // nanoseconds to milliseconds
if (!hasLength) {
length = -1;
}
np.set(QStringLiteral("length"), length);
np.set(QStringLiteral("url"), fileUrl);
}
#include "moc_mpriscontrolplugin.cpp"
#include "mpriscontrolplugin.moc"