Fix crash and black screen on video session.

Linphone.sln

 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28307.1321
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.31424.327
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Linphone", "Linphone\Linphone.csproj", "{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}"
 	ProjectSection(ProjectDependencies) = postProject
@@ -28,8 +28,8 @@ Global
 		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Debug|x64.ActiveCfg = Debug|x64
 		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Debug|x64.Build.0 = Debug|x64
 		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Debug|x64.Deploy.0 = Debug|x64
-		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Debug|x86.ActiveCfg = Release|x64
-		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Debug|x86.Build.0 = Release|x64
+		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Debug|x86.ActiveCfg = Debug|x86
+		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Debug|x86.Build.0 = Debug|x86
 		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Release|Any CPU.ActiveCfg = Release|x64
 		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Release|ARM.ActiveCfg = Release|x64
 		{6122CCBD-FB37-48CE-9C50-0C8A35003AE6}.Release|x64.ActiveCfg = Release|x64

Linphone/App.xaml

@@ -8,10 +8,10 @@
     <Application.Resources>
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>
-                <ResourceDictionary Source="Styles/Styles.xaml"></ResourceDictionary>
+                <ResourceDictionary Source="ms-appx:///Styles/Styles.xaml"></ResourceDictionary>
             </ResourceDictionary.MergedDictionaries>
             <ResourceDictionary.ThemeDictionaries>
-                <ResourceDictionary x:Key="Light" Source="Styles/Light.xaml"></ResourceDictionary>
+                <ResourceDictionary x:Key="Light" Source="ms-appx:///Styles/Light.xaml"></ResourceDictionary>
             </ResourceDictionary.ThemeDictionaries>    
         </ResourceDictionary>
     </Application.Resources>

Linphone/Linphone.csproj

@@ -84,7 +84,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
     <DebugSymbols>true</DebugSymbols>
     <OutputPath>bin\x86\Debug\</OutputPath>
-    <DefineConstants>TRACE;DEBUG;NETFX_CORE;WINDOWS_UWP;CODE_ANALYSIS;CODE_ANALYSIS;CODE_ANALYSIS</DefineConstants>
+    <DefineConstants>TRACE;DEBUG;NETFX_CORE;CODE_ANALYSIS;CODE_ANALYSIS;CODE_ANALYSIS;CODE_ANALYSIS;WINDOWS_UWP</DefineConstants>
     <NoWarn>;2008</NoWarn>
     <DebugType>full</DebugType>
     <PlatformTarget>x86</PlatformTarget>
@@ -386,7 +386,7 @@
       <Version>2.1.13</Version>
     </PackageReference>
     <PackageReference Include="LinphoneSDK">
-      <Version>4.5.0-alpha.316</Version>
+      <Version>*</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.ApplicationInsights">
       <Version>2.16.0</Version>

Linphone/Model/LinphoneManager.cs

@@ -61,6 +61,8 @@ namespace Linphone.Model {
         }
         public static void StopVideoStream()
         {
+            LinphoneManager.Instance.Core.NativePreviewWindowId = null;
+            LinphoneManager.Instance.Core.NativeVideoWindowId = null;
         }
         private PushNotificationChannel channel;
 
@@ -550,8 +552,9 @@ namespace Linphone.Model {
 
             CreateAudioDeviceInputNodeResult resultNode = await audioGraph.CreateDeviceInputNodeAsync(Windows.Media.Capture.MediaCategory.Media);
             AudioDeviceInputNode deviceInputNode = resultNode.DeviceInputNode;
-
-            deviceInputNode.Dispose();
+            if(deviceInputNode != null)
+                deviceInputNode.Dispose();
+            if(audioGraph != null)
             audioGraph.Dispose();
         }
 

Linphone/Views/AudioSettings.xaml

@@ -73,6 +73,19 @@
                                 x:Name="GSM" 
                                 x:Uid="GSMCodec">
                             </ToggleSwitch>
+
+                            <ToggleSwitch
+                                Grid.Row="8"
+                                x:Name="AMRWB" 
+                                x:Uid="AMRWBCodec">
+                            </ToggleSwitch>
+
+                            <ToggleSwitch
+                                Grid.Row="9"
+                                x:Name="AMRNB" 
+                                x:Uid="AMRNBCodec">
+                            </ToggleSwitch>
+                            
                         </Grid>
                     </ScrollViewer.Content>
                 </ScrollViewer>

Linphone/Views/AudioSettings.xaml.cs

@@ -48,6 +48,9 @@ namespace Linphone.Views {
             //G729.IsEnabled = Customs.EnableG729;
             GSM.IsOn = _settings.GSM;
             OPUS.IsOn = _settings.OPUS;
+            AMRWB.IsOn = _settings.AMRWB;
+            AMRNB.IsOn = _settings.AMRNB;
+
         }
 
         /// <summary>
@@ -77,6 +80,8 @@ namespace Linphone.Views {
             _settings.G729 = ToBool(G729.IsOn);
             _settings.GSM = ToBool(GSM.IsOn);
             _settings.OPUS = ToBool(OPUS.IsOn);
+            _settings.AMRWB = ToBool(AMRWB.IsOn);
+            _settings.AMRNB = ToBool(AMRNB.IsOn);
             _settings.Save();
         }
 

Linphone/Views/InCall.xaml.cs

@@ -60,7 +60,10 @@ namespace Linphone.Views {
             Loaded += OnPageLoaded;
             if (LinphoneManager.Instance.IsVideoAvailable) {
                 VideoGrid.Visibility = Visibility.Collapsed;
+                StartVideoStream();// Initialize to avoid create new windows.
             }
+            else
+                StopVideoStream();
 
             if (LinphoneManager.Instance.Core.CurrentCall.State == CallState.StreamsRunning)
                 Status.Text = "00:00:00";
@@ -120,6 +123,7 @@ private async void buttons_VideoClick(object sender, bool isVideoOn) {
                 return;
             CallParams param = LinphoneManager.Instance.Core.CreateCallParams(call);
             param.VideoEnabled = isVideoOn;
+            param.VideoDirection = MediaDirection.SendRecv;
             call.Update(param);
             if(isVideoOn)
                 StartVideoStream();