Fix #219, handle av media changes

Can now start or stop video on demand of the peer

core.h

@@ -233,7 +233,7 @@ signals:
     void avEnding(int friendId, int callIndex);
     void avRequestTimeout(int friendId, int callIndex);
     void avPeerTimeout(int friendId, int callIndex);
-    void avMediaChange(int friendId, int callIndex);
+    void avMediaChange(int friendId, int callIndex, bool videoEnabled);
 
     void videoFrameReceived(vpx_image* frame);
 
@@ -265,7 +265,7 @@ private:
     static void onAvEnding(void* toxav, int32_t call_index, void* core);
     static void onAvRequestTimeout(void* toxav, int32_t call_index, void* core);
     static void onAvPeerTimeout(void* toxav, int32_t call_index, void* core);
-    static void onAvMediaChange(void* toxav, int32_t call_index, void* core);
+    static void onAvMediaChange(void *toxav, int32_t call_index, void* core);
 
     static void prepareCall(int friendId, int callId, ToxAv *toxav, bool videoEnabled);
     static void cleanupCall(int callId);

coreav.cpp

@@ -54,19 +54,37 @@ void Core::prepareCall(int friendId, int callId, ToxAv* toxav, bool videoEnabled
     calls[callId].sendAudioTimer->setSingleShot(true);
     connect(calls[callId].sendAudioTimer, &QTimer::timeout, [=](){sendCallAudio(callId,toxav);});
     calls[callId].sendAudioTimer->start();
+    calls[callId].sendVideoTimer->setInterval(50);
+    calls[callId].sendVideoTimer->setSingleShot(true);
     if (calls[callId].videoEnabled)
     {
-        calls[callId].sendVideoTimer->setInterval(50);
-        calls[callId].sendVideoTimer->setSingleShot(true);
         calls[callId].sendVideoTimer->start();
         Widget::getInstance()->getCamera()->suscribe();
     }
 }
 
-void Core::onAvMediaChange(void*, int32_t, void*)
+void Core::onAvMediaChange(void* toxav, int32_t callId, void* core)
 {
-    // HALP, PLS COMPLETE MEH
+    ToxAvCSettings settings;
-    qWarning() << "If you see this, please complain on GitHub about seeing me! (Don't forget to say what caused me!)";
+    toxav_get_peer_csettings((ToxAv*)toxav, callId, 0, &settings);
+    int friendId = toxav_get_peer_id((ToxAv*)toxav, callId, 0);
+
+    qWarning() << "Core: Received media change from friend "<<friendId;
+
+    if (settings.call_type == TypeAudio)
+    {
+        calls[callId].videoEnabled = false;
+        calls[callId].sendVideoTimer->stop();
+        Widget::getInstance()->getCamera()->unsuscribe();
+        emit ((Core*)core)->avMediaChange(friendId, callId, false);
+    }
+    else
+    {
+        Widget::getInstance()->getCamera()->suscribe();
+        calls[callId].videoEnabled = true;
+        calls[callId].sendVideoTimer->start();
+        emit ((Core*)core)->avMediaChange(friendId, callId, true);
+    }
 }
 
 void Core::answerCall(int callId)
@@ -241,7 +259,9 @@ void Core::sendCallVideo(int callId)
         vpx_img_free(&frame);
     }
     else
+    {
         qDebug("Core::sendCallVideo: Invalid frame (bad camera ?)");
+    }
 
     calls[callId].sendVideoTimer->start();
 }
@@ -262,11 +282,11 @@ void Core::micMuteToggle(int callId)
     calls[callId].muteMic = !calls[callId].muteMic;
 }
 
-void Core::onAvCancel(void* _toxav, int32_t call_index, void* core)
+void Core::onAvCancel(void* _toxav, int32_t callId, void* core)
 {
     ToxAv* toxav = static_cast<ToxAv*>(_toxav);
 
-    int friendId = toxav_get_peer_id(toxav, call_index, 0);
+    int friendId = toxav_get_peer_id(toxav, callId, 0);
     if (friendId < 0)
     {
         qWarning() << "Core: Received invalid AV cancel";
@@ -274,7 +294,9 @@ void Core::onAvCancel(void* _toxav, int32_t call_index, void* core)
     }
     qDebug() << QString("Core: AV cancel from %1").arg(friendId);
 
-    emit static_cast<Core*>(core)->avCancel(friendId, call_index);
+    calls[callId].active = false;
+
+    emit static_cast<Core*>(core)->avCancel(friendId, callId);
 }
 
 void Core::onAvReject(void*, int32_t, void*)

widget/form/chatform.cpp

@@ -573,6 +573,18 @@ void ChatForm::onAvPeerTimeout(int FriendId, int)
     netcam->hide();
 }
 
+void ChatForm::onAvMediaChange(int, int, bool video)
+{
+    if (video)
+    {
+        netcam->show();
+    }
+    else
+    {
+        netcam->hide();
+    }
+}
+
 void ChatForm::onAnswerCallTriggered()
 {
     audioInputFlag = true;

widget/form/chatform.h

@@ -72,6 +72,7 @@ public slots:
     void onAvEnding(int FriendId, int CallId);
     void onAvRequestTimeout(int FriendId, int CallId);
     void onAvPeerTimeout(int FriendId, int CallId);
+    void onAvMediaChange(int FriendId, int CallId, bool video);
     void onMicMuteToggle();
 
 private slots:

widget/widget.cpp

@@ -435,6 +435,7 @@ void Widget::addFriend(int friendId, const QString &userId)
     connect(core, &Core::avEnding, newfriend->chatForm, &ChatForm::onAvEnding);
     connect(core, &Core::avRequestTimeout, newfriend->chatForm, &ChatForm::onAvRequestTimeout);
     connect(core, &Core::avPeerTimeout, newfriend->chatForm, &ChatForm::onAvPeerTimeout);
+    connect(core, &Core::avMediaChange, newfriend->chatForm, &ChatForm::onAvMediaChange);
 }
 
 void Widget::addFriendFailed(const QString&)