Netplay: receive spectating option from frontend.

src/core/netplay.cpp

@@ -1898,9 +1898,11 @@ bool Netplay::CreateSession(std::string nickname, s32 port, s32 max_players, std
   return true;
 }
 
-bool Netplay::JoinSession(std::string nickname, const std::string& hostname, s32 port, std::string password)
+bool Netplay::JoinSession(std::string nickname, const std::string& hostname, s32 port, std::string password, bool spectating)
 {
   s_local_session_password = password;
+  s_local_spectating = spectating;
+
   // TODO: input delay. GGPO Should support changing it on the fly.
   const s32 input_delay = 1;
 

src/core/netplay.h

@@ -11,7 +11,7 @@ enum : s32
   MAX_PLAYERS = 2,
 
   // Maximum number of spectators allowed to watch the session.
-  MAX_SPECTATORS = 4,
+  MAX_SPECTATORS = 1,
 
   // Maximum netplay prediction frames
   MAX_ROLLBACK_FRAMES = 8,
@@ -32,7 +32,7 @@ enum : u8
 };
 
 bool CreateSession(std::string nickname, s32 port, s32 max_players, std::string password);
-bool JoinSession(std::string nickname, const std::string& hostname, s32 port, std::string password);
+bool JoinSession(std::string nickname, const std::string& hostname, s32 port, std::string password, bool spectating);
 
 bool IsActive();
 

src/duckstation-qt/netplaydialogs.cpp

@@ -82,6 +82,7 @@ void JoinNetplaySessionDialog::accept()
   const QString& nickname = m_ui.nickname->text();
   const QString& hostname = m_ui.hostname->text();
   const QString& password = m_ui.password->text();
+  const bool spectating = m_ui.spectating->isChecked();
   QDialog::accept();
 
   g_emu_thread->joinNetplaySession(nickname.trimmed(), hostname.trimmed(), port, password);

src/duckstation-qt/qthost.cpp

@@ -1092,16 +1092,17 @@ void EmuThread::createNetplaySession(const QString& nickname, qint32 port, qint3
 }
 
 void EmuThread::joinNetplaySession(const QString& nickname, const QString& hostname, qint32 port,
-                                   const QString& password)
+                                   const QString& password, bool spectating)
 {
   if (!isOnThread())
   {
     QMetaObject::invokeMethod(this, "joinNetplaySession", Qt::QueuedConnection, Q_ARG(const QString&, nickname),
-                              Q_ARG(const QString&, hostname), Q_ARG(qint32, port), Q_ARG(const QString&, password));
+                              Q_ARG(const QString&, hostname), Q_ARG(qint32, port), Q_ARG(const QString&, password),
+                              Q_ARG(bool, spectating));
     return;
   }
 
-  if (!Netplay::JoinSession(nickname.toStdString(), hostname.toStdString(), port, password.toStdString()))
+  if (!Netplay::JoinSession(nickname.toStdString(), hostname.toStdString(), port, password.toStdString(), spectating))
   {
     errorReported(tr("Netplay Error"), tr("Failed to join netplay session. The log may contain more information."));
     return;

src/duckstation-qt/qthost.h

@@ -188,7 +188,7 @@ public Q_SLOTS:
   void applyCheat(quint32 index);
   void reloadPostProcessingShaders();
   void createNetplaySession(const QString& nickname, qint32 port, qint32 max_players, const QString& password);
-  void joinNetplaySession(const QString& nickname, const QString& hostname, qint32 port, const QString& password);
+  void joinNetplaySession(const QString& nickname, const QString& hostname, qint32 port, bool spectating);
 
 private Q_SLOTS:
   void stopInThread();