From 197ac366e2b300c2f89da43e7fee14d90399e55c Mon Sep 17 00:00:00 2001
From: srcejon <jon@beniston.com>
Date: Wed, 6 Nov 2024 12:27:06 +0000
Subject: [PATCH] Support compilation when QT_NO_NETWORKINTERFACE is defined
 (E.g. WebAssembly)

---
 qrtplib/rtpudptransmitter.cpp | 23 +++++++++++++++++++----
 qrtplib/rtpudptransmitter.h   | 14 +++++++++++---
 2 files changed, 30 insertions(+), 7 deletions(-)

diff --git a/qrtplib/rtpudptransmitter.cpp b/qrtplib/rtpudptransmitter.cpp
index 47016ada6..112b12bce 100644
--- a/qrtplib/rtpudptransmitter.cpp
+++ b/qrtplib/rtpudptransmitter.cpp
@@ -157,8 +157,10 @@ int RTPUDPTransmitter::Create(std::size_t maximumpacketsize, const RTPTransmissi
     }
 
     m_maxpacksize = maximumpacketsize;
-    m_multicastInterface = params->GetMulticastInterface();
-    m_receivemode = RTPTransmitter::AcceptAll;
+#ifndef QT_NO_NETWORKINTERFACE
+     m_multicastInterface = params->GetMulticastInterface();
+#endif
+     m_receivemode = RTPTransmitter::AcceptAll;
 
     m_waitingfordata = false;
     m_created = true;
@@ -306,7 +308,8 @@ void RTPUDPTransmitter::ClearDestinations()
 
 bool RTPUDPTransmitter::SupportsMulticasting()
 {
-    QNetworkInterface::InterfaceFlags flags = m_multicastInterface.flags();
+#ifndef QT_NO_NETWORKINTERFACE
+     QNetworkInterface::InterfaceFlags flags = m_multicastInterface.flags();
     QAbstractSocket::SocketState rtpSocketState = m_rtpsock->state();
     QAbstractSocket::SocketState rtcpSocketState = m_rtcpsock->state();
     return m_multicastInterface.isValid()
@@ -315,11 +318,16 @@ bool RTPUDPTransmitter::SupportsMulticasting()
             && (flags & QNetworkInterface::CanMulticast)
             && (flags & QNetworkInterface::IsRunning)
             && !(flags & QNetworkInterface::IsLoopBack);
+
+#else
+    return false;
+#endif
 }
 
 int RTPUDPTransmitter::JoinMulticastGroup(const RTPAddress &addr)
 {
-    if (!m_init) {
+#ifndef QT_NO_NETWORKINTERFACE
+     if (!m_init) {
         return ERR_RTP_UDPV4TRANS_NOTINIT;
     }
 
@@ -346,10 +354,14 @@ int RTPUDPTransmitter::JoinMulticastGroup(const RTPAddress &addr)
     }
 
     return 0;
+#else
+    return ERR_RTP_UDPV6TRANS_NOMULTICASTSUPPORT;
+#endif
 }
 
 int RTPUDPTransmitter::LeaveMulticastGroup(const RTPAddress &addr)
 {
+#ifndef QT_NO_NETWORKINTERFACE
     if (!m_init) {
         return ERR_RTP_UDPV4TRANS_NOTINIT;
     }
@@ -370,6 +382,9 @@ int RTPUDPTransmitter::LeaveMulticastGroup(const RTPAddress &addr)
     }
 
     return 0;
+#else
+    return ERR_RTP_UDPV6TRANS_NOMULTICASTSUPPORT;
+#endif
 }
 
 int RTPUDPTransmitter::SetReceiveMode(RTPTransmitter::ReceiveMode m)
diff --git a/qrtplib/rtpudptransmitter.h b/qrtplib/rtpudptransmitter.h
index f925dd742..68d6fd524 100644
--- a/qrtplib/rtpudptransmitter.h
+++ b/qrtplib/rtpudptransmitter.h
@@ -68,10 +68,12 @@ public:
         m_bindAddress = bindAddress;
     }
 
-    /** Sets the multicast interface IP address. */
+#ifndef QT_NO_NETWORKINTERFACE
+     /** Sets the multicast interface IP address. */
     void SetMulticastInterface(const QNetworkInterface& mcastInterface) {
         m_mcastInterface = mcastInterface;
     }
+#endif
 
     /** Sets the RTP portbase to \c pbase, which has to be an even number
      *  unless RTPUDPv4TransmissionParams::SetAllowOddPortbase was called;
@@ -87,11 +89,13 @@ public:
         return m_bindAddress;
     }
 
+#ifndef QT_NO_NETWORKINTERFACE
     /** Returns the multicast interface IP address. */
     QNetworkInterface GetMulticastInterface() const
     {
         return m_mcastInterface;
     }
+#endif
 
     /** Returns the RTP portbase which will be used (default is 5000). */
     uint16_t GetPortbase() const
@@ -210,7 +214,9 @@ public:
 
 private:
     QHostAddress m_bindAddress;
+#ifndef QT_NO_NETWORKINTERFACE
     QNetworkInterface m_mcastInterface;
+#endif
     uint16_t m_portbase;
     int m_rtpsendbufsz, m_rtprecvbufsz;
     int m_rtcpsendbufsz, m_rtcprecvbufsz;
@@ -349,8 +355,10 @@ private:
     QUdpSocket *m_rtpsock, *m_rtcpsock;
     bool m_deletesocketswhendone;
     QHostAddress m_localIP; //!< from parameters bind IP
-    QNetworkInterface m_multicastInterface; //!< from parameters multicast interface
-    uint16_t m_rtpPort, m_rtcpPort;
+#ifndef QT_NO_NETWORKINTERFACE
+     QNetworkInterface m_multicastInterface; //!< from parameters multicast interface
+#endif
+     uint16_t m_rtpPort, m_rtcpPort;
     RTPTransmitter::ReceiveMode m_receivemode;
 
     std::size_t m_maxpacksize;