Support voice calls

resources/langs/nheko_en.ts

@@ -404,6 +404,21 @@ Example: https://server.my:8787</translation>
         <source>%1 created and configured room: %2</source>
         <translation>%1 created and configured room: %2</translation>
     </message>
+    <message>
+        <location line="+6"/>
+        <source>%1 placed a voice call.</source>
+        <translation>%1 placed a voice call.</translation>
+    </message>
+    <message>
+        <location line="+6"/>
+        <source>%1 answered the call.</source>
+        <translation>%1 answered the call.</translation>
+    </message>
+    <message>
+        <location line="+6"/>
+        <source>%1 ended the call.</source>
+        <translation>%1 ended the call.</translation>
+    </message>
 </context>
 <context>
     <name>Placeholder</name>
@@ -1796,6 +1811,36 @@ Media size: %2
         <source>%1 sent an encrypted message</source>
         <translation>%1 sent an encrypted message</translation>
     </message>
+    <message>
+        <location line="+5"/>
+        <source>You placed a call</source>
+        <translation>You placed a call</translation>
+    </message>
+    <message>
+        <location line="+3"/>
+        <source>%1 placed a call</source>
+        <translation>%1 placed a call</translation>
+    </message>
+    <message>
+        <location line="+5"/>
+        <source>You answered a call</source>
+        <translation>You answered a call</translation>
+    </message>
+    <message>
+        <location line="+3"/>
+        <source>%1 answered a call</source>
+        <translation>%1 answered a call</translation>
+    </message>
+    <message>
+        <location line="+5"/>
+        <source>You ended a call</source>
+        <translation>You ended a call</translation>
+    </message>
+    <message>
+        <location line="+3"/>
+        <source>%1 ended a call</source>
+        <translation>%1 ended a call</translation>
+    </message>
 </context>
 <context>
     <name>popups::UserMentions</name>

resources/qml/delegates/MessageDelegate.qml

@@ -90,6 +90,24 @@ Item {
 				text: qsTr("%1 created and configured room: %2").arg(model.data.userName).arg(model.data.roomId)
 			}
 		}
+		DelegateChoice {
+			roleValue: MtxEvent.CallInvite
+			NoticeMessage {
+				text: qsTr("%1 placed a voice call.").arg(model.data.userName)
+			}
+		}
+		DelegateChoice {
+			roleValue: MtxEvent.CallAnswer
+			NoticeMessage {
+				text: qsTr("%1 answered the call.").arg(model.data.userName)
+			}
+		}
+		DelegateChoice {
+			roleValue: MtxEvent.CallHangUp
+			NoticeMessage {
+				text: qsTr("%1 ended the call.").arg(model.data.userName)
+			}
+		}
 		DelegateChoice {
 			// TODO: make a more complex formatter for the power levels.
 			roleValue: MtxEvent.PowerLevels

resources/res.qrc

@@ -136,4 +136,9 @@
         <file>qml/delegates/Placeholder.qml</file>
         <file>qml/delegates/Reply.qml</file>
     </qresource>
+    <qresource prefix="/media">
+        <file>media/ring.ogg</file>
+        <file>media/ringback.ogg</file>
+        <file>media/callend.ogg</file>
+    </qresource>
 </RCC>