Differential D26702 Diff 73692 dataengines/mpris2/multiplexer.cpp

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dataengines/mpris2/multiplexer.cpp

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20#include "multiplexer.h" 20​#include "multiplexer.h"
21#include <mprisplayer.h> 21​#include <mprisplayer.h>
22 22​
23#include <KLocalizedString> 23​#include <KLocalizedString>
24 24​
25#include <QDebug> // for Q_ASSERT 25​#include <QDebug> // for Q_ASSERT
26#include <QAction> 26​#include <QAction>
27 27​
28​#include <algorithm>
29​
30​#include "debug.h"
28 31​
29// the '@' at the start is not valid for D-Bus names, so it will 32​// the '@' at the start is not valid for D-Bus names, so it will
30// never interfere with an actual MPRIS2 player 33​// never interfere with an actual MPRIS2 player
31const QLatin1String Multiplexer::sourceName = QLatin1String("@multiplex"); 34​const QLatin1String Multiplexer::sourceName = QLatin1String("@multiplex");
32 35​
33Multiplexer::Multiplexer(QObject* parent) 36​Multiplexer::Multiplexer(QObject* parent)
34 : DataContainer(parent) 37​ : DataContainer(parent)
35{ 38​{
36 setObjectName(sourceName); 39​ setObjectName(sourceName);
37} 40​}
38 41​
39void Multiplexer::addPlayer(PlayerContainer *container) 42​void Multiplexer::evaluatePlayer(PlayerContainer *container)
40{ 43​{
41 bool makeActive = m_activeName.isEmpty(); 44​ bool makeActive = m_activeName.isEmpty();
42 45​
43 if (container->data().value(QStringLiteral("PlaybackStatus")) == QLatin1String("Playing")) { 46​ QString name = container->objectName();
44 m_playing.insert(container->objectName(), container); 47​ const QString containerPlaybackStatus = container->data().value(QStringLiteral("PlaybackStatus")).toString();
45 if (!makeActive && 48​ const QString multiplexerPlaybackStatus = data().value(QStringLiteral("PlaybackStatus")).toString();
46 data().value(QStringLiteral("PlaybackStatus")) != QLatin1String("Playing")) { 49​
47 makeActive = true; 50​ m_playing.remove(name);
51​ m_paused.remove(name);
52​ m_stopped.remove(name);
53​
54​ // Ensure the actual player is always in the correct category
55​ if (containerPlaybackStatus == QLatin1String("Playing")) {
56​ m_playing.insert(name, container);
57​ } else if (containerPlaybackStatus == QLatin1String("Paused")) {
58​ m_paused.insert(name, container);
59​ } else {
60​ m_stopped.insert(name, container);
61​ }
62​
63​ const auto proxyPid = container->data().value(QStringLiteral("Metadata")).toMap().value(QStringLiteral("kde:pid")).toUInt();
64​ if (proxyPid) {
65​ auto it = m_proxies.find(proxyPid);
66​ if (it == m_proxies.end()) {
67​ m_proxies.insert(proxyPid, container);
68​ }
48 } 69​ }
49 } else if (container->data().value(QStringLiteral("PlaybackStatus")) == QLatin1String("Paused")) { 70​
50 m_paused.insert(container->objectName(), container); 71​ const auto containerPid = container->data().value(QStringLiteral("InstancePid")).toUInt();
51 if (!makeActive && 72​ PlayerContainer *proxy = m_proxies.value(containerPid);
52 data().value(QStringLiteral("PlaybackStatus")) != QLatin1String("Playing") && 73​ if (proxy) {
53 data().value(QStringLiteral("PlaybackStatus")) != QLatin1String("Paused")) { 74​ // Operate on the proxy from now on
75​ container = proxy;
76​ name = container->objectName();
77​ }
78​
79​ if (!makeActive) {
80​ // If this player has higher status than the current multiplexer player, switch over to it
81​ if (m_playing.value(name) && multiplexerPlaybackStatus != QLatin1String("Playing")) {
82​ qCDebug(MPRIS2) << "Player" << name << "is now playing but current was not";
83​ makeActive = true;
84​ } else if (m_paused.value(name)
85​ && multiplexerPlaybackStatus != QLatin1String("Playing")
86​ && multiplexerPlaybackStatus != QLatin1String("Paused")) {
87​ qCDebug(MPRIS2) << "Player" << name << "is now paused but current was stopped";
54 makeActive = true; 88​ makeActive = true;
55 } 89​ }
56 } else { ​
57 m_stopped.insert(container->objectName(), container); ​
58 } 90​ }
59 91​
60 connect(container, &Plasma::DataContainer::dataUpdated, 92​ if (m_activeName == name) {
61 this, &Multiplexer::playerUpdated); 93​ // If we are the current player and move to a lower status, switch to another one, if necessary
94​ if (m_paused.value(name) && !m_playing.isEmpty()) {
95​ qCDebug(MPRIS2) << "Current player" << m_activeName << "is now paused but there is another playing one, switching players";
96​ setBestActive();
97​ makeActive = false;
98​ } else if (m_stopped.value(name) && (!m_playing.isEmpty() || !m_paused.isEmpty())) {
99​ qCDebug(MPRIS2) << "Current player" << m_activeName << "is now stopped but there is another playing or paused one, switching players";
100​ setBestActive();
101​ makeActive = false;
102​ } else {
103​ makeActive = true;
104​ }
105​ }
62 106​
63 if (makeActive) { 107​ if (makeActive) {
64 m_activeName = container->objectName(); 108​ if (m_activeName != name) {
109​ qCDebug(MPRIS2) << "Switching from" << m_activeName << "to" << name;
110​ m_activeName = name;
111​ }
65 replaceData(container->data()); 112​ replaceData(container->data());
66 checkForUpdate(); 113​ checkForUpdate();
67 emit activePlayerChanged(container); 114​ emit activePlayerChanged(container);
68 } 115​ }
69} 116​}
70 117​
118​void Multiplexer::addPlayer(PlayerContainer *container)
119​{
120​ evaluatePlayer(container);
121​
122​ connect(container, &Plasma::DataContainer::dataUpdated,
123​ this, &Multiplexer::playerUpdated);
124​}
125​
71void Multiplexer::removePlayer(const QString &name) 126​void Multiplexer::removePlayer(const QString &name)
72{ 127​{
73 PlayerContainer *container = m_playing.take(name); 128​ PlayerContainer *container = m_playing.take(name);
74 if (!container) 129​ if (!container)
75 container = m_paused.take(name); 130​ container = m_paused.take(name);
76 if (!container) 131​ if (!container)
77 container = m_stopped.take(name); 132​ container = m_stopped.take(name);
78 if (container) 133​ if (container)
79 container->disconnect(this); 134​ container->disconnect(this);
80 135​
136​ // Remove proxy by value (container), not key (pid), which could have changed
137​ const auto pid = m_proxies.key(container);
138​ if (pid) {
139​ m_proxies.remove(pid);
140​ }
141​
81 if (name == m_activeName) { 142​ if (name == m_activeName) {
82 setBestActive(); 143​ setBestActive();
83 } 144​ }
84} 145​}
85 146​
86PlayerContainer *Multiplexer::activePlayer() const 147​PlayerContainer *Multiplexer::activePlayer() const
87{ 148​{
88 if (m_activeName.isEmpty()) { 149​ if (m_activeName.isEmpty()) {
89 return nullptr; 150​ return nullptr;
90 } 151​ }
91 152​
92 PlayerContainer *container = m_playing.value(m_activeName); 153​ PlayerContainer *container = m_playing.value(m_activeName);
93 if (!container) 154​ if (!container)
94 container = m_paused.value(m_activeName); 155​ container = m_paused.value(m_activeName);
95 if (!container) 156​ if (!container)
96 container = m_stopped.value(m_activeName); 157​ container = m_stopped.value(m_activeName);
97 Q_ASSERT(container); 158​ Q_ASSERT(container);
98 return container; 159​ return container;
99} 160​}
100 161​
101void Multiplexer::playerUpdated(const QString &name, const Plasma::DataEngine::Data &newData) 162​void Multiplexer::playerUpdated(const QString &name, const Plasma::DataEngine::Data &newData)
102{ 163​{
103 if (newData.value(QStringLiteral("PlaybackStatus")) == QLatin1String("Playing")) { 164​ Q_UNUSED(name);
104 if (!m_playing.contains(name)) { 165​ Q_UNUSED(newData);
105 PlayerContainer *container = m_paused.take(name); 166​ evaluatePlayer(qobject_cast<PlayerContainer *>(sender()));
106 if (!container) { ​
107 container = m_stopped.take(name); ​
108 } ​
109 Q_ASSERT(container); ​
110 m_playing.insert(name, container); ​
111 } 167​}
112 if (m_activeName != name && 168​
113 data().value(QStringLiteral("PlaybackStatus")) != QLatin1String("Playing")) { 169​PlayerContainer *Multiplexer::firstPlayerFromHash(const QHash<QString, PlayerContainer *> &hash, PlayerContainer **proxyCandidate) const
114 m_activeName = name; 170​{
115 replaceData(newData); 171​ if (proxyCandidate) {
116 checkForUpdate(); 172​ *proxyCandidate = nullptr;
117 emit activePlayerChanged(activePlayer()); ​
118 return; ​
119 } ​
120 } else if (newData.value(QStringLiteral("PlaybackStatus")) == QLatin1String("Paused")) { ​
121 if (!m_paused.contains(name)) { ​
122 PlayerContainer *container = m_playing.take(name); ​
123 if (!container) { ​
124 container = m_stopped.take(name); ​
125 } ​
126 Q_ASSERT(container); ​
127 m_paused.insert(name, container); ​
128 } 173​ }
129 if (m_activeName != name && 174​
130 data().value(QStringLiteral("PlaybackStatus")) != QLatin1String("Playing") && 175​ auto it = hash.begin();
131 data().value(QStringLiteral("PlaybackStatus")) != QLatin1String("Paused")) { 176​ if (it == hash.end()) {
132 m_activeName = name; 177​ return nullptr;
133 replaceData(newData); ​
134 checkForUpdate(); ​
135 emit activePlayerChanged(activePlayer()); ​
136 return; ​
137 } 178​ }
138 } else { 179​
139 if (!m_stopped.contains(name)) { 180​ PlayerContainer *container = it.value();
140 PlayerContainer *container = m_playing.take(name); 181​ const auto containerPid = container->data().value(QStringLiteral("InstancePid")).toUInt();
141 if (!container) { 182​
142 container = m_paused.take(name); 183​ // Check if this player is being proxied by someone else and prefer the proxy
184​ // but only if it is in the same hash (same state)
185​ if (PlayerContainer *proxy = m_proxies.value(containerPid)) {
186​ if (std::find(hash.begin(), hash.end(), proxy) == hash.end()) {
187​ if (proxyCandidate) {
188​ *proxyCandidate = proxy;
143 } 189​ }
144 Q_ASSERT(container); 190​ return nullptr;
145 m_stopped.insert(name, container); 191​ //continue;
146 } 192​ }
193​ return proxy;
147 } 194​ }
148 195​
149 if (m_activeName == name) { 196​ return container;
150 bool isPaused = newData.value(QStringLiteral("PlaybackStatus")) == QLatin1String("Paused"); ​
151 bool isStopped = !isPaused && newData.value(QStringLiteral("PlaybackStatus")) != QLatin1String("Playing"); ​
152 if (isPaused && !m_playing.isEmpty()) { ​
153 setBestActive(); ​
154 } else if (isStopped && (!m_playing.isEmpty() || !m_paused.isEmpty())) { ​
155 setBestActive(); ​
156 } else { ​
157 replaceData(newData); ​
158 checkForUpdate(); ​
159 } ​
160 } ​
161} 197​}
162 198​
163void Multiplexer::setBestActive() 199​void Multiplexer::setBestActive()
164{ 200​{
165 QHash<QString,PlayerContainer*>::const_iterator it = m_playing.constBegin(); 201​ qCDebug(MPRIS2) << "Activating best player";
166 if (it != m_playing.constEnd()) { 202​ PlayerContainer *proxyCandidate = nullptr;
167 m_activeName = it.key(); 203​
168 replaceData(it.value()->data()); 204​ PlayerContainer *container = firstPlayerFromHash(m_playing, &proxyCandidate);
169 emit activePlayerChanged(it.value()); 205​ if (!container) {
170 } else { 206​ // If we found a proxy earlier, prefer it over a random other player in that category
171 it = m_paused.constBegin(); 207​ if (proxyCandidate && std::find(m_paused.constBegin(), m_paused.constEnd(), proxyCandidate) != m_paused.constEnd()) {
172 if (it != m_paused.constEnd()) { 208​ container = proxyCandidate;
173 m_activeName = it.key(); ​
174 replaceData(it.value()->data()); ​
175 emit activePlayerChanged(it.value()); ​
176 } else { ​
177 it = m_stopped.constBegin(); ​
178 if (it != m_stopped.constEnd()) { ​
179 m_activeName = it.key(); ​
180 replaceData(it.value()->data()); ​
181 emit activePlayerChanged(it.value()); ​
182 } else { 209​ } else {
183 m_activeName = QString(); 210​ container = firstPlayerFromHash(m_paused, &proxyCandidate);
184 removeAllData(); 211​ }
185 emit activePlayerChanged(nullptr); ​
186 } 212​ }
213​ if (!container) {
214​ if (proxyCandidate && std::find(m_stopped.constBegin(), m_stopped.constEnd(), proxyCandidate) != m_stopped.constEnd()) {
215​ container = proxyCandidate;
216​ } else {
217​ container = firstPlayerFromHash(m_stopped, &proxyCandidate);
187 } 218​ }
188 } 219​ }
220​
221​ if (!container) {
222​ qCDebug(MPRIS2) << "There is currently no player";
223​ m_activeName.clear();
224​ removeAllData();
225​ } else {
226​ m_activeName = container->objectName();
227​ qCDebug(MPRIS2) << "Determined" << m_activeName << "to be the best player";
228​ replaceData(container->data());
189 checkForUpdate(); 229​ checkForUpdate();
190} 230​ }
191 231​
232​ emit activePlayerChanged(container);
233​}
234​
192void Multiplexer::replaceData(const Plasma::DataEngine::Data &data) 235​void Multiplexer::replaceData(const Plasma::DataEngine::Data &data)
193{ 236​{
194 removeAllData(); 237​ removeAllData();
195 238​
196 Plasma::DataEngine::Data::const_iterator it = data.constBegin(); 239​ Plasma::DataEngine::Data::const_iterator it = data.constBegin();
197 while (it != data.constEnd()) { 240​ while (it != data.constEnd()) {
198 setData(it.key(), it.value()); 241​ setData(it.key(), it.value());
199 ++it; 242​ ++it;
200 } 243​ }
201 setData(QStringLiteral("Source Name"), m_activeName); 244​ setData(QStringLiteral("Source Name"), m_activeName);
202} 245​}
203 246​