Libass Integration

Build-FFmpeg.ps1

@@ -2,7 +2,7 @@ param(
 
     [ValidateSet('x86', 'x64', 'ARM', 'ARM64')]
     [string[]] $Platforms = ('x86', 'x64', 'ARM64'),
-
+    
     <#
         Example values:
         14.1
@@ -13,7 +13,14 @@ param(
 
         Note. The PlatformToolset will be inferred from this value ('v141', 'v142'...)
     #>
-    [version] $VcVersion = '14.3',
+    [version] $VcVersion = '14.4',
+
+    <#
+        Example values:
+        v141
+        v142
+    #>
+    [string] $PlatformToolset = 'v143',
 
     [ValidateSet('UWP', 'Desktop')]
     [string] $WindowsTarget = 'UWP',
@@ -117,10 +124,20 @@ function Build-Platform {
 
     New-Item -ItemType Directory -Force $SolutionDir\Intermediate\FFmpeg$WindowsTarget\$Platform -OutVariable build | Out-Null
     New-Item -ItemType Directory -Force $SolutionDir\Output\FFmpeg$WindowsTarget\$Platform -OutVariable target | Out-Null
+    New-Item -ItemType Directory -Force $SolutionDir\Output\FFmpeg$WindowsTarget\$Platform\bin | Out-Null
 
     $env:LIB += ";$build\lib"
     $env:INCLUDE += ";$build\include"
-    $env:Path += ";$SolutionDir\Libs\gas-preprocessor"	
+    $env:INCLUDE += ";$build\include\harfbuzz"
+    $env:INCLUDE += ";$build\include\freetype2"
+    $env:Path += ";$SolutionDir\Libs\gas-preprocessor"
+
+    # Copy wang-bin
+    Write-Host Copying wang-bin pre-built binaries...
+    Get-ChildItem $WangBin\install\$Platform | Copy-Item -Destination $build\ -Force -Recurse
+    Copy-Item $build\bin\libass.dll $target\bin\
+    Copy-Item $build\lib\ass.lib $target\bin\
+    Copy-Item $WangBin\install\$Platform\include\ass $target\include\ -Force -Recurse
 
     if (! $SkipBuildLibs)
     {
@@ -457,10 +474,6 @@ if (!$vsLatestPath){
 
 Write-Host "Visual Studio Installation folder: [$vsLatestPath]"
 
-# 14.16.27023 => v141
-$platformToolSet = "v$($VcVersion.Major)$("$($VcVersion.Minor)"[0])"
-Write-Host "Platform Toolset: [$platformToolSet]"
-
 # Export full current PATH from environment into MSYS2
 $env:MSYS2_PATH_TYPE = 'inherit'
 
@@ -477,6 +490,40 @@ if ($NugetPackageVersion)
     }
 }
 
+# Check for 7z.exe
+$7z = @(cmd /c "where.exe 7z.exe 2>nul")[0]
+if (-not $7z) {
+    $7z = "$Env:ProgramFiles\7-zip\7z.exe"
+    if (-not (Test-Path $7z)) {
+        Write-Error "7z.exe not found."
+    }
+}
+
+$IntDir = "${PSScriptRoot}\Intermediate\FFmpeg$WindowsTarget"
+$WangBin  = "$IntDir\wang-bin"
+if (-not (Test-Path "$WangBin\install")) {
+
+    Write-Host
+    Write-Host Downloading wang-bin binaries...
+    Write-Host
+
+    $WangTmp = "$IntDir\wang-tmp"
+    New-Item -ItemType Directory -Force $WangTmp
+    New-Item -ItemType Directory -Force $WangBin
+    Get-ChildItem $WangTmp | Remove-Item -Force -Recurse
+    Get-ChildItem $WangBin | Remove-Item -Force -Recurse
+    if ($WindowsTarget = "UWP") {
+        $url = "https://nightly.link/wang-bin/devpkgs/workflows/build/main/devpkgs-vs2022-uwp-Release.zip"
+    } else {
+        $url = "https://nightly.link/wang-bin/devpkgs/workflows/build/main/devpkgs-vs2022-windows-desktop-Release.zip"
+    }
+    & curl.exe -L -o $WangTmp\temp.zip $url
+    & $7z x $WangTmp\temp.zip "-o$WangTmp" -y
+    $file = Get-ChildItem $WangTmp -Filter "*.7z"
+    & $7z x $file.FullName "-o$WangTmp" -y
+    Move-Item "$WangTmp\install" "$WangBin\install"
+}
+
 $start = Get-Date
 $success = 1
 
@@ -506,7 +553,7 @@ if ($AllowParallelBuilds -and $Platforms.Count -gt 1)
         {
             $skip
         }
-        $proc = Start-Process -PassThru powershell "-File .\Build-FFmpeg.ps1 -Platforms $platform -VcVersion $VcVersion -WindowsTarget $WindowsTarget -WindowsTargetPlatformVersion $WindowsTargetPlatformVersion -Configuration $Configuration -SharedOrStatic $SharedOrStatic -Gpl $Gpl -Encoders $Encoders -Devices $Devices -Programs $Programs -VSInstallerFolder ""$VSInstallerFolder"" -VsWhereCriteria ""$VsWhereCriteria"" -BashExe ""$BashExe"" $clear -FFmpegUrl $FFmpegUrl -FFmpegCommit $FFmpegCommit $skipPkgConfig $addparams"
+        $proc = Start-Process -PassThru powershell "-File .\Build-FFmpeg.ps1 -Platforms $platform -VcVersion $VcVersion -PlatformToolset $PlatformToolset -WindowsTarget $WindowsTarget -WindowsTargetPlatformVersion $WindowsTargetPlatformVersion -Configuration $Configuration -SharedOrStatic $SharedOrStatic -Gpl $Gpl -Encoders $Encoders -Devices $Devices -Programs $Programs -VSInstallerFolder ""$VSInstallerFolder"" -VsWhereCriteria ""$VsWhereCriteria"" -BashExe ""$BashExe"" $clear -FFmpegUrl $FFmpegUrl -FFmpegCommit $FFmpegCommit $skipPkgConfig $addparams"
         $processes[$platform] = $proc
 
         # only build PkgConfigFake once
@@ -550,7 +597,7 @@ else
                 -Configuration 'Release' `
                 -WindowsTargetPlatformVersion $WindowsTargetPlatformVersion `
                 -VcVersion $VcVersion `
-                -PlatformToolset $platformToolSet `
+                -PlatformToolset $PlatformToolSet `
                 -VsLatestPath $vsLatestPath `
                 -BashExe $BashExe `
                 -LogFileName $logFile `

Build-FFmpegInteropX.ps1

@@ -10,10 +10,15 @@ param(
         14.16
         14.16.27023
         14.23.27820
+    #>
+    [version] $VcVersion = '14.4',
 
-        Note. The PlatformToolset will be inferred from this value ('v141', 'v142'...)
+    <#
+        Example values:
+        v141
+        v142
     #>
-    [version] $VcVersion = '14.3',
+    [string] $PlatformToolset = 'v143',
 
     <#
         Example values:
@@ -124,10 +129,6 @@ $ErrorActionPreference = "Stop"
 
 Write-Host "Visual Studio Installation folder: [$vsLatestPath]"
 
-# 14.16.27023 => v141
-$platformToolSet = "v$($VcVersion.Major)$("$($VcVersion.Minor)"[0])"
-Write-Host "Platform Toolset: [$platformToolSet]"
-
 # Export full current PATH from environment into MSYS2
 $env:MSYS2_PATH_TYPE = 'inherit'
 
@@ -175,7 +176,7 @@ if ($AllowParallelBuilds -and $Platforms.Count -gt 1)
             continue;
         }
 
-        $proc = Start-Process -PassThru powershell "-File .\Build-FFmpegInteropX.ps1 -Platforms $platform -VcVersion $VcVersion -WindowsTarget $WindowsTarget -WindowsTargetPlatformVersion $WindowsTargetPlatformVersion -Configuration $Configuration -VSInstallerFolder ""$VSInstallerFolder"" -VsWhereCriteria ""$VsWhereCriteria"" -FFmpegInteropXUrl ""$FFmpegInteropXUrl"" -FFmpegInteropXBranch ""FFmpegInteropXBranch"" -FFmpegInteropXCommit ""$FFmpegInteropXCommit"" -LibraryVersionNumber $LibraryVersionNumber $addparams"
+        $proc = Start-Process -PassThru powershell "-File .\Build-FFmpegInteropX.ps1 -Platforms $platform -VcVersion $VcVersion -PlatformToolset $PlatformToolset -WindowsTarget $WindowsTarget -WindowsTargetPlatformVersion $WindowsTargetPlatformVersion -Configuration $Configuration -VSInstallerFolder ""$VSInstallerFolder"" -VsWhereCriteria ""$VsWhereCriteria"" -FFmpegInteropXUrl ""$FFmpegInteropXUrl"" -FFmpegInteropXBranch ""FFmpegInteropXBranch"" -FFmpegInteropXCommit ""$FFmpegInteropXCommit"" -LibraryVersionNumber $LibraryVersionNumber $addparams"
         $processes[$platform] = $proc
     }
 
@@ -214,7 +215,7 @@ else
             Build-Platform `
                 -SolutionDir "${PSScriptRoot}\" `
                 -Platform $platform `
-                -PlatformToolset $platformToolSet `
+                -PlatformToolset $PlatformToolset `
                 -VsLatestPath $vsLatestPath `
                 -LibraryVersionNumber $LibraryVersionNumber
         }

Build/FFmpegConfig.sh

@@ -40,6 +40,7 @@ configureArgs="\
     --enable-iconv \
     --enable-libdav1d  \
     --enable-openssl \
+    --enable-libass \
     --enable-hwaccels \
     --enable-d3d11va \
     --disable-dxva2 \

FFmpegInteropX.sln

@@ -19,6 +19,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FFmpegInteropX.DotNet", "So
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "FFmpegInteropX.VideoEffects", "VideoEffects\FFmpegInteropX.VideoEffects.vcxproj", "{6C4BFF5E-7037-4EE8-9C9F-5381C35BA066}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "AssSsaRenderElement", "Samples\AssSsaRenderElement\AssSsaRenderElement.vcxproj", "{CBED4D40-9319-4AA3-9616-80144E8083AC}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug_Desktop|ARM = Debug_Desktop|ARM
@@ -262,6 +264,38 @@ Global
 		{6C4BFF5E-7037-4EE8-9C9F-5381C35BA066}.Release_UWP|x64.Build.0 = Release_UWP|x64
 		{6C4BFF5E-7037-4EE8-9C9F-5381C35BA066}.Release_UWP|x86.ActiveCfg = Release_UWP|Win32
 		{6C4BFF5E-7037-4EE8-9C9F-5381C35BA066}.Release_UWP|x86.Build.0 = Release_UWP|Win32
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_Desktop|ARM.ActiveCfg = Debug|ARM
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_Desktop|ARM.Build.0 = Debug|ARM
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_Desktop|ARM64.ActiveCfg = Debug|ARM64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_Desktop|ARM64.Build.0 = Debug|ARM64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_Desktop|x64.ActiveCfg = Debug|x64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_Desktop|x64.Build.0 = Debug|x64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_Desktop|x86.ActiveCfg = Debug|Win32
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_Desktop|x86.Build.0 = Debug|Win32
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_UWP|ARM.ActiveCfg = Debug|ARM
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_UWP|ARM.Build.0 = Debug|ARM
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_UWP|ARM64.ActiveCfg = Debug|ARM64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_UWP|ARM64.Build.0 = Debug|ARM64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_UWP|x64.ActiveCfg = Debug|x64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_UWP|x64.Build.0 = Debug|x64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_UWP|x86.ActiveCfg = Debug|Win32
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Debug_UWP|x86.Build.0 = Debug|Win32
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_Desktop|ARM.ActiveCfg = Release|ARM
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_Desktop|ARM.Build.0 = Release|ARM
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_Desktop|ARM64.ActiveCfg = Release|ARM64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_Desktop|ARM64.Build.0 = Release|ARM64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_Desktop|x64.ActiveCfg = Release|x64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_Desktop|x64.Build.0 = Release|x64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_Desktop|x86.ActiveCfg = Release|Win32
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_Desktop|x86.Build.0 = Release|Win32
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_UWP|ARM.ActiveCfg = Release|ARM
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_UWP|ARM.Build.0 = Release|ARM
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_UWP|ARM64.ActiveCfg = Release|ARM64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_UWP|ARM64.Build.0 = Release|ARM64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_UWP|x64.ActiveCfg = Release|x64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_UWP|x64.Build.0 = Release|x64
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_UWP|x86.ActiveCfg = Release|Win32
+		{CBED4D40-9319-4AA3-9616-80144E8083AC}.Release_UWP|x86.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Samples/AssSsaRenderElement/AssSsaRenderElement.def

@@ -0,0 +1,3 @@
+EXPORTS
+DllCanUnloadNow = WINRT_CanUnloadNow                    PRIVATE
+DllGetActivationFactory = WINRT_GetActivationFactory    PRIVATE

Samples/AssSsaRenderElement/AssSsaRenderElement.vcxproj

@@ -0,0 +1,156 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="..\..\packages\Microsoft.Windows.CppWinRT.2.0.220531.1\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.220531.1\build\native\Microsoft.Windows.CppWinRT.props')" />
+  <PropertyGroup Label="Globals">
+    <CppWinRTOptimized>true</CppWinRTOptimized>
+    <CppWinRTRootNamespaceAutoMerge>true</CppWinRTRootNamespaceAutoMerge>
+    <CppWinRTGenerateWindowsMetadata>true</CppWinRTGenerateWindowsMetadata>
+    <MinimalCoreWin>true</MinimalCoreWin>
+    <ProjectGuid>{cbed4d40-9319-4aa3-9616-80144e8083ac}</ProjectGuid>
+    <ProjectName>AssSsaRenderElement</ProjectName>
+    <RootNamespace>AssSsaRenderElement</RootNamespace>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>
+    <AppContainerApplication>true</AppContainerApplication>
+    <ApplicationType>Windows Store</ApplicationType>
+    <ApplicationTypeRevision>10.0</ApplicationTypeRevision>
+    <WindowsTargetPlatformVersion Condition=" '$(WindowsTargetPlatformVersion)' == '' ">10.0.26100.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformMinVersion>10.0.17134.0</WindowsTargetPlatformMinVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|ARM">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|ARM64">
+      <Configuration>Debug</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM">
+      <Configuration>Release</Configuration>
+      <Platform>ARM</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|ARM64">
+      <Configuration>Release</Configuration>
+      <Platform>ARM64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <PlatformToolset>v143</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '16.0'">v142</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '15.0'">v141</PlatformToolset>
+    <PlatformToolset Condition="'$(VisualStudioVersion)' == '14.0'">v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+    <GenerateManifest>false</GenerateManifest>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets">
+    <Import Project="PropertySheet.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup />
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <PrecompiledHeaderOutputFile>$(IntDir)pch.pch</PrecompiledHeaderOutputFile>
+      <WarningLevel>Level4</WarningLevel>
+      <AdditionalOptions>%(AdditionalOptions) /bigobj</AdditionalOptions>
+      <PreprocessorDefinitions>_WINRT_DLL;WIN32_LEAN_AND_MEAN;WINRT_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalUsingDirectories>$(WindowsSDK_WindowsMetadata);$(AdditionalUsingDirectories)</AdditionalUsingDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateWindowsMetadata>false</GenerateWindowsMetadata>
+      <ModuleDefinitionFile>AssSsaRenderElement.def</ModuleDefinitionFile>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
+    <ClCompile>
+      <PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
+    <ClCompile>
+      <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="AssSsaRenderer.h" />
+    <ClInclude Include="pch.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="AssSsaRenderer.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader>Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="AssSsaRenderElement.def" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+    <None Include="PropertySheet.props" />
+    <Text Include="readme.txt">
+      <DeploymentContent>false</DeploymentContent>
+    </Text>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\Source\FFmpegInteropX.vcxproj">
+      <Project>{9cfa3b3e-b7af-4629-84e2-c962c5b046b1}</Project>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <Midl Include="Source.idl" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\packages\Microsoft.Windows.CppWinRT.2.0.220531.1\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.220531.1\build\native\Microsoft.Windows.CppWinRT.targets')" />
+  </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.220531.1\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Windows.CppWinRT.2.0.220531.1\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('..\..\packages\Microsoft.Windows.CppWinRT.2.0.220531.1\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.Windows.CppWinRT.2.0.220531.1\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
+</Project>