[server] Add API to check whether PipeWire is used

src/server.cpp

@@ -82,6 +82,13 @@ void ServerPrivate::update(const pa_server_info *info)
     m_defaultSinkName = QString::fromUtf8(info->default_sink_name);
     m_defaultSourceName = QString::fromUtf8(info->default_source_name);
 
+    const bool isPw = QString::fromUtf8(info->server_name).contains("PipeWire");
+
+    if (isPw != m_isPipeWire) {
+        m_isPipeWire = isPw;
+        Q_EMIT q->isPipeWireChanged();
+    }
+
     q->updateDefaultDevices();
 }
 
@@ -121,4 +128,10 @@ void Server::updateDefaultDevices()
     }
 }
 
+bool Server::isPipeWire() const
+{
+    return d->m_isPipeWire;
+}
+
+
 } // PulseAudioQt

src/server.h

@@ -29,9 +29,15 @@ public:
     Source *defaultSource() const;
     void setDefaultSource(Source *source);
 
+    /**
+     * Whether PulseAudio is provided via pipewire-pulse.
+     */
+    bool isPipeWire() const;
+
 Q_SIGNALS:
     void defaultSinkChanged(PulseAudioQt::Sink *sink);
     void defaultSourceChanged(PulseAudioQt::Source *source);
+    void isPipeWireChanged();
 
 private:
     explicit Server(Context *context);

src/server_p.h

@@ -21,6 +21,7 @@ public:
     QString m_defaultSourceName;
     Sink *m_defaultSink;
     Source *m_defaultSource;
+    bool m_isPipeWire = false;
 
     void update(const pa_server_info *info);
 };