From e6d261c069f8e962243fe0bfdd8ed309bf10cd06 Mon Sep 17 00:00:00 2001
From: Andrey Volk <andywolk@gmail.com>
Date: Wed, 9 Sep 2026 01:33:47 +0300
Subject: [PATCH] [mod_opus] Windows: update opus library to v1.5.2 and use
 pre-compiled binaries (#3149)

---
 Freeswitch.2017.sln                           |  78 -----
 libs/.gitignore                               |   1 +
 libs/win32/opus/opus.2017.vcxproj             | 255 --------------
 libs/win32/opus/opus.celt.2017.vcxproj        | 258 ---------------
 libs/win32/opus/opus.silk_common.2017.vcxproj | 313 ------------------
 libs/win32/opus/opus.silk_fixed.2017.vcxproj  | 205 ------------
 libs/win32/opus/opus.silk_float.2017.vcxproj  | 253 --------------
 src/mod/codecs/mod_opus/mod_opus.2017.vcxproj |  26 +-
 w32/download_opus.props                       |  40 ---
 w32/opus-version.props                        |  19 ++
 w32/opus.props                                |  85 +++++
 11 files changed, 110 insertions(+), 1423 deletions(-)
 delete mode 100644 libs/win32/opus/opus.2017.vcxproj
 delete mode 100644 libs/win32/opus/opus.celt.2017.vcxproj
 delete mode 100644 libs/win32/opus/opus.silk_common.2017.vcxproj
 delete mode 100644 libs/win32/opus/opus.silk_fixed.2017.vcxproj
 delete mode 100644 libs/win32/opus/opus.silk_float.2017.vcxproj
 delete mode 100644 w32/download_opus.props
 create mode 100644 w32/opus-version.props
 create mode 100644 w32/opus.props

diff --git a/Freeswitch.2017.sln b/Freeswitch.2017.sln
index 3d67ec12c2..5efcf1dd3a 100644
--- a/Freeswitch.2017.sln
+++ b/Freeswitch.2017.sln
@@ -428,18 +428,6 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_math_fixed_tables", "l
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_cielab_luts", "libs\win32\spandsp\make_cielab_luts.2017.vcxproj", "{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}"
 EndProject
-Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "opus", "opus", "{ED2CA8B5-8E91-4296-A120-02BB0B674652}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "opus", "libs\win32\opus\opus.2017.vcxproj", "{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "opus.celt", "libs\win32\opus\opus.celt.2017.vcxproj", "{245603E3-F580-41A5-9632-B25FE3372CBF}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "opus.silk_common", "libs\win32\opus\opus.silk_common.2017.vcxproj", "{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "opus.silk_fixed", "libs\win32\opus\opus.silk_fixed.2017.vcxproj", "{8484C90D-1561-402F-A91D-2DB10F8C5171}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "opus.silk_float", "libs\win32\opus\opus.silk_float.2017.vcxproj", "{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}"
-EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "mod_opus", "src\mod\codecs\mod_opus\mod_opus.2017.vcxproj", "{64E99CCA-3C6F-4AEB-9FA3-CFAC711257BB}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_t43_gray_code_tables", "libs\win32\spandsp\make_t43_gray_code_tables.2017.vcxproj", "{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}"
@@ -1831,66 +1819,6 @@ Global
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|Win32.Build.0 = All|Win32
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|x64.ActiveCfg = All|Win32
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}.Release|x64.Build.0 = All|Win32
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.All|Win32.ActiveCfg = Release|Win32
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.All|Win32.Build.0 = Release|Win32
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.All|x64.ActiveCfg = Release|x64
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.All|x64.Build.0 = Release|x64
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.Debug|Win32.ActiveCfg = Debug|Win32
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.Debug|Win32.Build.0 = Debug|Win32
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.Debug|x64.ActiveCfg = Debug|x64
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.Debug|x64.Build.0 = Debug|x64
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.Release|Win32.ActiveCfg = Release|Win32
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.Release|Win32.Build.0 = Release|Win32
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.Release|x64.ActiveCfg = Release|x64
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}.Release|x64.Build.0 = Release|x64
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.All|Win32.ActiveCfg = Release|Win32
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.All|Win32.Build.0 = Release|Win32
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.All|x64.ActiveCfg = Release|x64
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.All|x64.Build.0 = Release|x64
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.Debug|Win32.ActiveCfg = Debug|Win32
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.Debug|Win32.Build.0 = Debug|Win32
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.Debug|x64.ActiveCfg = Debug|x64
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.Debug|x64.Build.0 = Debug|x64
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.Release|Win32.ActiveCfg = Release|Win32
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.Release|Win32.Build.0 = Release|Win32
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.Release|x64.ActiveCfg = Release|x64
-		{245603E3-F580-41A5-9632-B25FE3372CBF}.Release|x64.Build.0 = Release|x64
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.All|Win32.ActiveCfg = Release|Win32
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.All|Win32.Build.0 = Release|Win32
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.All|x64.ActiveCfg = Release|x64
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.All|x64.Build.0 = Release|x64
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.Debug|Win32.ActiveCfg = Debug|Win32
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.Debug|Win32.Build.0 = Debug|Win32
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.Debug|x64.ActiveCfg = Debug|x64
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.Debug|x64.Build.0 = Debug|x64
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.Release|Win32.ActiveCfg = Release|Win32
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.Release|Win32.Build.0 = Release|Win32
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.Release|x64.ActiveCfg = Release|x64
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}.Release|x64.Build.0 = Release|x64
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.All|Win32.ActiveCfg = Release|Win32
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.All|Win32.Build.0 = Release|Win32
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.All|x64.ActiveCfg = Release|x64
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.All|x64.Build.0 = Release|x64
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.Debug|Win32.ActiveCfg = Debug|Win32
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.Debug|Win32.Build.0 = Debug|Win32
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.Debug|x64.ActiveCfg = Debug|x64
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.Debug|x64.Build.0 = Debug|x64
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.Release|Win32.ActiveCfg = Release|Win32
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.Release|Win32.Build.0 = Release|Win32
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.Release|x64.ActiveCfg = Release|x64
-		{8484C90D-1561-402F-A91D-2DB10F8C5171}.Release|x64.Build.0 = Release|x64
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.All|Win32.ActiveCfg = Release|Win32
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.All|Win32.Build.0 = Release|Win32
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.All|x64.ActiveCfg = Release|x64
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.All|x64.Build.0 = Release|x64
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.Debug|Win32.ActiveCfg = Debug|Win32
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.Debug|Win32.Build.0 = Debug|Win32
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.Debug|x64.ActiveCfg = Debug|x64
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.Debug|x64.Build.0 = Debug|x64
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.Release|Win32.ActiveCfg = Release|Win32
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.Release|Win32.Build.0 = Release|Win32
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.Release|x64.ActiveCfg = Release|x64
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}.Release|x64.Build.0 = Release|x64
 		{64E99CCA-3C6F-4AEB-9FA3-CFAC711257BB}.All|Win32.ActiveCfg = Release|Win32
 		{64E99CCA-3C6F-4AEB-9FA3-CFAC711257BB}.All|Win32.Build.0 = Release|Win32
 		{64E99CCA-3C6F-4AEB-9FA3-CFAC711257BB}.All|x64.ActiveCfg = Release|x64
@@ -2511,12 +2439,6 @@ Global
 		{B535402E-38D2-4D54-8360-423ACBD17192} = {9DE35039-A8F6-4FBF-B1B6-EB527F802411}
 		{2386B892-35F5-46CF-A0F0-10394D2FBF9B} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 		{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
-		{ED2CA8B5-8E91-4296-A120-02BB0B674652} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
-		{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E} = {ED2CA8B5-8E91-4296-A120-02BB0B674652}
-		{245603E3-F580-41A5-9632-B25FE3372CBF} = {ED2CA8B5-8E91-4296-A120-02BB0B674652}
-		{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16} = {ED2CA8B5-8E91-4296-A120-02BB0B674652}
-		{8484C90D-1561-402F-A91D-2DB10F8C5171} = {ED2CA8B5-8E91-4296-A120-02BB0B674652}
-		{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782} = {ED2CA8B5-8E91-4296-A120-02BB0B674652}
 		{64E99CCA-3C6F-4AEB-9FA3-CFAC711257BB} = {F881ADA2-2F1A-4046-9FEB-191D9422D781}
 		{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5} = {EB910B0D-F27D-4B62-B67B-DE834C99AC5B}
 		{5BA0D5BD-330D-4EE2-B959-CAFEA04E50E0} = {0C808854-54D1-4230-BFF5-77B5FD905000}
diff --git a/libs/.gitignore b/libs/.gitignore
index 48d9e2286b..06b712abd4 100644
--- a/libs/.gitignore
+++ b/libs/.gitignore
@@ -577,3 +577,4 @@ win32/spandsp/spandsp.h
 win32/spandsp/win32
 libcodec2-*
 ffmpeg-*
+opus-*
diff --git a/libs/win32/opus/opus.2017.vcxproj b/libs/win32/opus/opus.2017.vcxproj
deleted file mode 100644
index 92c222eb2d..0000000000
--- a/libs/win32/opus/opus.2017.vcxproj
+++ /dev/null
@@ -1,255 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <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|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <Keyword>Win32Proj</Keyword>
-    <ProjectName>opus</ProjectName>
-    <ProjectGuid>{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}</ProjectGuid>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <Import Project="$(SolutionDir)\w32\download_opus.props" Condition=" '$(downloadopusPropsImported)' == '' " />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <LinkIncremental>true</LinkIncremental>
-    <TargetName>opus</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <LinkIncremental>true</LinkIncremental>
-    <TargetName>opus</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <TargetName>opus</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildBeforeTargets>
-    </CustomBuildBeforeTargets>
-    <TargetName>opus</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus\</IntDir>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;HAVE_CONFIG_H;WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk;..\..\opus-1.1\celt;..\..\opus-1.1\win32;..\..\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Disabled</Optimization>
-      <DisableSpecificWarnings>4334;4244;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-    </ClCompile>
-    <Link>
-      <TargetMachine>MachineX86</TargetMachine>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <SubSystem>Console</SubSystem>
-      <AdditionalLibraryDirectories>$(SolutionDir)$(Configuration)$(PlatformArchitecture);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <AdditionalDependencies>celt.lib;silk_common.lib;silk_fixed.lib;silk_float.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <ClCompile>
-      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;HAVE_CONFIG_H;WIN32;WIN64;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk;..\..\opus-1.1\celt;..\..\opus-1.1\win32;..\..\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Disabled</Optimization>
-      <DisableSpecificWarnings>4334;4244;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-    </ClCompile>
-    <Link>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <SubSystem>Console</SubSystem>
-      <AdditionalLibraryDirectories>$(SolutionDir)$(Configuration)$(PlatformArchitecture);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <AdditionalDependencies>celt.lib;silk_common.lib;silk_fixed.lib;silk_float.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;HAVE_CONFIG_H;WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk;..\..\opus-1.1\celt;..\..\opus-1.1\win32;..\..\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <DisableSpecificWarnings>4334;4244;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-    </ClCompile>
-    <Link>
-      <TargetMachine>MachineX86</TargetMachine>
-      <GenerateDebugInformation>false</GenerateDebugInformation>
-      <SubSystem>Console</SubSystem>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>celt.lib;silk_common.lib;silk_fixed.lib;silk_float.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(SolutionDir)$(Configuration)$(PlatformArchitecture);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <LinkStatus>false</LinkStatus>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <ClCompile>
-      <PreprocessorDefinitions>_CRT_SECURE_NO_WARNINGS;HAVE_CONFIG_H;WIN32;WIN64;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk;..\..\opus-1.1\celt;..\..\opus-1.1\win32;..\..\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <DisableSpecificWarnings>4334;4244;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-    </ClCompile>
-    <Link>
-      <GenerateDebugInformation>false</GenerateDebugInformation>
-      <SubSystem>Console</SubSystem>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>celt.lib;silk_common.lib;silk_fixed.lib;silk_float.lib;kernel32.lib;user32.lib;gdi32.lib;winspool.lib;comdlg32.lib;advapi32.lib;shell32.lib;ole32.lib;oleaut32.lib;uuid.lib;odbc32.lib;odbccp32.lib;%(AdditionalDependencies)</AdditionalDependencies>
-      <AdditionalLibraryDirectories>$(SolutionDir)$(Configuration)$(PlatformArchitecture);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
-      <LinkStatus>false</LinkStatus>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\opus-1.1\src\analysis.c" />
-    <ClCompile Include="..\..\opus-1.1\src\mlp.c" />
-    <ClCompile Include="..\..\opus-1.1\src\mlp_data.c" />
-    <ClCompile Include="..\..\opus-1.1\src\opus.c" />
-    <ClCompile Include="..\..\opus-1.1\src\opus_compare.c" />
-    <ClCompile Include="..\..\opus-1.1\src\opus_decoder.c" />
-    <ClCompile Include="..\..\opus-1.1\src\opus_encoder.c" />
-    <ClCompile Include="..\..\opus-1.1\src\opus_multistream.c" />
-    <ClCompile Include="..\..\opus-1.1\src\opus_multistream_decoder.c" />
-    <ClCompile Include="..\..\opus-1.1\src\opus_multistream_encoder.c" />
-    <ClCompile Include="..\..\opus-1.1\src\repacketizer.c" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="..\..\opus-1.1\celt\arch.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\celt.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\entdec.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\entenc.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\float_cast.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\os_support.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\stack_alloc.h" />
-    <ClInclude Include="..\..\opus-1.1\include\opus.h" />
-    <ClInclude Include="..\..\opus-1.1\include\opus_defines.h" />
-    <ClInclude Include="..\..\opus-1.1\include\opus_types.h" />
-    <ClInclude Include="..\..\opus-1.1\include\opus_multistream.h" />
-    <ClInclude Include="..\..\opus-1.1\win32\config.h" />
-    <ClInclude Include="..\..\opus-1.1\src\opus_private.h" />
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="opus.celt.2017.vcxproj">
-      <Project>{245603e3-f580-41a5-9632-b25fe3372cbf}</Project>
-    </ProjectReference>
-    <ProjectReference Include="opus.silk_common.2017.vcxproj">
-      <Project>{c303d2fc-ff97-49b8-9ddd-467b4c9a0b16}</Project>
-    </ProjectReference>
-    <ProjectReference Include="opus.silk_fixed.2017.vcxproj">
-      <Project>{8484c90d-1561-402f-a91d-2db10f8c5171}</Project>
-    </ProjectReference>
-    <ProjectReference Include="opus.silk_float.2017.vcxproj">
-      <Project>{9c4961d2-5ddb-40c7-9be8-ca918dc4e782}</Project>
-    </ProjectReference>
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
\ No newline at end of file
diff --git a/libs/win32/opus/opus.celt.2017.vcxproj b/libs/win32/opus/opus.celt.2017.vcxproj
deleted file mode 100644
index 34d0ed772a..0000000000
--- a/libs/win32/opus/opus.celt.2017.vcxproj
+++ /dev/null
@@ -1,258 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|x64">
-      <Configuration>Debug</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{245603E3-F580-41A5-9632-B25FE3372CBF}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>opus.celt</RootNamespace>
-    <ProjectName>opus.celt</ProjectName>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <Import Project="$(SolutionDir)\w32\download_opus.props" Condition=" '$(downloadopusPropsImported)' == '' " />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <CustomBuildBeforeTargets>
-    </CustomBuildBeforeTargets>
-    <TargetName>celt</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus.celt\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <TargetName>celt</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus.celt\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <TargetName>celt</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus.celt\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <TargetName>celt</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus.celt\</IntDir>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\win32;..\..\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;WIN64;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\win32;..\..\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\win32;..\..\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;WIN64;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\win32;..\..\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClInclude Include="..\..\opus-1.1\win32\config.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\arch.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\bands.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\celt.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\cwrs.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\ecintrin.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\entcode.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\entdec.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\entenc.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\fixed_debug.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\fixed_generic.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\float_cast.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\kiss_fft.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\laplace.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\mathops.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\mdct.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\modes.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\os_support.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\pitch.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\celt_lpc.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\quant_bands.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\rate.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\stack_alloc.h" />
-    <ClInclude Include="..\..\opus-1.1\celt\vq.h" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\opus-1.1\celt\bands.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\celt.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\celt_decoder.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\celt_encoder.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\cwrs.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\entcode.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\entdec.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\entenc.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\kiss_fft.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\laplace.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\mathops.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\mdct.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\modes.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\pitch.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\celt_lpc.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\quant_bands.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\rate.c" />
-    <ClCompile Include="..\..\opus-1.1\celt\vq.c" />
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
\ No newline at end of file
diff --git a/libs/win32/opus/opus.silk_common.2017.vcxproj b/libs/win32/opus/opus.silk_common.2017.vcxproj
deleted file mode 100644
index 7d333196be..0000000000
--- a/libs/win32/opus/opus.silk_common.2017.vcxproj
+++ /dev/null
@@ -1,313 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <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|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{C303D2FC-FF97-49B8-9DDD-467B4C9A0B16}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>src_common</RootNamespace>
-    <ProjectName>opus.silk_common</ProjectName>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <Import Project="$(SolutionDir)\w32\download_opus.props" Condition=" '$(downloadopusPropsImported)' == '' " />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <TargetName>silk_common</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus.silk_common\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <TargetName>silk_common</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus.silk_common\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <TargetName>silk_common</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus.silk_common\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <CustomBuildBeforeTargets>
-    </CustomBuildBeforeTargets>
-    <TargetName>silk_common</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\opus.silk_common\</IntDir>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk\fixed;..\..\opus-1.1\silk\float;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;WIN64;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk\fixed;..\..\opus-1.1\silk\float;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk\fixed;..\..\opus-1.1\silk\float;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <FloatingPointModel>Fast</FloatingPointModel>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;WIN64;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk\fixed;..\..\opus-1.1\silk\float;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <FloatingPointModel>Fast</FloatingPointModel>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\opus-1.1\silk\A2NLSF.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\ana_filt_bank_1.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\biquad_alt.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\bwexpander.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\bwexpander_32.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\check_control_input.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\CNG.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\code_signs.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\control_audio_bandwidth.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\control_codec.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\control_SNR.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\debug.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\decoder_set_fs.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\decode_core.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\decode_frame.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\decode_indices.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\decode_parameters.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\decode_pitch.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\decode_pulses.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\dec_API.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\encode_indices.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\encode_pulses.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\enc_API.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\gain_quant.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\HP_variable_cutoff.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\init_decoder.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\init_encoder.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\inner_prod_aligned.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\interpolate.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\lin2log.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\log2lin.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\LPC_analysis_filter.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\LPC_inv_pred_gain.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\LP_variable_cutoff.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\table_LSF_cos.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NLSF2A.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NLSF_decode.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NLSF_del_dec_quant.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NLSF_encode.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NLSF_stabilize.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NLSF_unpack.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NLSF_VQ.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NLSF_VQ_weights_laroia.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NSQ.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\NSQ_del_dec.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\pitch_est_tables.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\PLC.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\process_NLSFs.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\quant_LTP_gains.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\resampler.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\resampler_down2.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\resampler_down2_3.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\resampler_private_AR2.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\resampler_private_down_FIR.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\resampler_private_IIR_FIR.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\resampler_private_up2_HQ.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\resampler_rom.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\shell_coder.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\sigm_Q15.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\sort.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\stereo_decode_pred.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\stereo_encode_pred.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\stereo_find_predictor.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\stereo_LR_to_MS.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\stereo_MS_to_LR.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\stereo_quant_pred.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\sum_sqr_shift.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\tables_gain.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\tables_LTP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\tables_NLSF_CB_NB_MB.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\tables_NLSF_CB_WB.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\tables_other.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\tables_pitch_lag.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\tables_pulses_per_block.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\VAD.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\VQ_WMat_EC.c" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="..\..\opus-1.1\include\opus_types.h" />
-    <ClInclude Include="..\..\opus-1.1\win32\config.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\control.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\debug.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\define.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\errors.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\Inlines.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\MacroCount.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\MacroDebug.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\macros.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\main.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\pitch_est_defines.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\PLC.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\resampler_private.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\resampler_rom.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\resampler_structs.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\API.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\SigProc_FIX.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\structs.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\tables.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\tuning_parameters.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\typedef.h" />
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
\ No newline at end of file
diff --git a/libs/win32/opus/opus.silk_fixed.2017.vcxproj b/libs/win32/opus/opus.silk_fixed.2017.vcxproj
deleted file mode 100644
index 10e760b119..0000000000
--- a/libs/win32/opus/opus.silk_fixed.2017.vcxproj
+++ /dev/null
@@ -1,205 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|x64">
-      <Configuration>Debug</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{8484C90D-1561-402F-A91D-2DB10F8C5171}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>src_FIX</RootNamespace>
-    <ProjectName>opus.silk_fixed</ProjectName>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <Import Project="$(SolutionDir)\w32\download_opus.props" Condition=" '$(downloadopusPropsImported)' == '' " />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <TargetName>silk_fixed</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\silk_fixed\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <TargetName>silk_fixed</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\silk_fixed\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <TargetName>silk_fixed</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\silk_fixed\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <TargetName>silk_fixed</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\silk_fixed\</IntDir>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk\;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <DisableSpecificWarnings>4244;4133;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk\;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <DisableSpecificWarnings>4244;4133;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk\;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <DisableSpecificWarnings>4244;4133;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk\;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <DisableSpecificWarnings>4244;4133;%(DisableSpecificWarnings)</DisableSpecificWarnings>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\corrMatrix_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\encode_frame_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\find_LPC_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\find_LTP_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\find_pitch_lags_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\find_pred_coefs_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\LTP_analysis_filter_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\LTP_scale_ctrl_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\noise_shape_analysis_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\prefilter_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\process_gains_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\regularize_correlations_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\residual_energy16_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\residual_energy_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\solve_LS_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\warped_autocorrelation_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\k2a_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\k2a_Q16_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\apply_sine_window_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\autocorr_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\burg_modified_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\pitch_analysis_core_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\vector_ops_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\schur_FIX.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\fixed\schur64_FIX.c" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="..\..\opus-1.1\include\opus_types.h" />
-    <ClInclude Include="..\..\opus-1.1\win32\config.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\SigProc_FIX.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\fixed\main_FIX.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\fixed\structs_FIX.h" />
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="opus.silk_common.2017.vcxproj">
-      <Project>{c303d2fc-ff97-49b8-9ddd-467b4c9a0b16}</Project>
-    </ProjectReference>
-    <ProjectReference Include="opus.silk_float.2017.vcxproj">
-      <Project>{9c4961d2-5ddb-40c7-9be8-ca918dc4e782}</Project>
-    </ProjectReference>
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
\ No newline at end of file
diff --git a/libs/win32/opus/opus.silk_float.2017.vcxproj b/libs/win32/opus/opus.silk_float.2017.vcxproj
deleted file mode 100644
index c6bbabfc65..0000000000
--- a/libs/win32/opus/opus.silk_float.2017.vcxproj
+++ /dev/null
@@ -1,253 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <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|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|x64">
-      <Configuration>Release</Configuration>
-      <Platform>x64</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{9C4961D2-5DDB-40C7-9BE8-CA918DC4E782}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>src_FLP</RootNamespace>
-    <ProjectName>opus.silk_float</ProjectName>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <Import Project="$(SolutionDir)\w32\download_opus.props" Condition=" '$(downloadopusPropsImported)' == '' " />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>true</UseDebugLibraries>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <TargetName>silk_float</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\silk_float\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <TargetName>silk_float</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\silk_float\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <TargetName>silk_float</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\silk_float\</IntDir>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <CustomBuildBeforeTargets>Compile</CustomBuildBeforeTargets>
-    <TargetName>silk_float</TargetName>
-    <IntDir>$(Platform)\$(Configuration)\silk_float\</IntDir>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk;..\..\opus-1.1\silk\fixed;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
-    <ClCompile>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <WarningLevel>Level3</WarningLevel>
-      <Optimization>Disabled</Optimization>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;WIN64;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk;..\..\opus-1.1\silk\fixed;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk;..\..\opus-1.1\silk\fixed;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
-    <ClCompile>
-      <WarningLevel>Level3</WarningLevel>
-      <PrecompiledHeader>
-      </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>HAVE_CONFIG_H;WIN32;WIN64;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>..\..\opus-1.1\silk;..\..\opus-1.1\silk\fixed;..\..\opus-1.1\win32;..\..\opus-1.1\celt;..\..\opus-1.1\include</AdditionalIncludeDirectories>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-    </ClCompile>
-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-    <PreBuildEvent>
-      <Command>"$(ProjectDir)..\..\opus-1.1\win32\genversion.bat" "$(ProjectDir)..\..\opus-1.1\win32\version.h" OPUS_VERSION</Command>
-      <Message>Generating version.h</Message>
-    </PreBuildEvent>
-    <CustomBuildStep>
-      <Command>
-      </Command>
-    </CustomBuildStep>
-    <CustomBuildStep>
-      <Outputs>
-      </Outputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\opus-1.1\silk\float\apply_sine_window_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\autocorrelation_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\burg_modified_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\bwexpander_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\corrMatrix_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\encode_frame_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\energy_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\find_LPC_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\find_LTP_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\find_pitch_lags_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\find_pred_coefs_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\inner_product_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\k2a_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\levinsondurbin_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\LPC_analysis_filter_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\LPC_inv_pred_gain_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\LTP_analysis_filter_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\LTP_scale_ctrl_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\noise_shape_analysis_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\pitch_analysis_core_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\prefilter_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\process_gains_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\regularize_correlations_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\residual_energy_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\scale_copy_vector_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\scale_vector_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\schur_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\solve_LS_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\sort_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\warped_autocorrelation_FLP.c" />
-    <ClCompile Include="..\..\opus-1.1\silk\float\wrappers_FLP.c" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Include="..\..\opus-1.1\include\opus_types.h" />
-    <ClInclude Include="..\..\opus-1.1\win32\config.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\float\main_FLP.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\float\SigProc_FLP.h" />
-    <ClInclude Include="..\..\opus-1.1\silk\float\structs_FLP.h" />
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="opus.silk_common.2017.vcxproj">
-      <Project>{c303d2fc-ff97-49b8-9ddd-467b4c9a0b16}</Project>
-    </ProjectReference>
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
\ No newline at end of file
diff --git a/src/mod/codecs/mod_opus/mod_opus.2017.vcxproj b/src/mod/codecs/mod_opus/mod_opus.2017.vcxproj
index 18478701c8..f7c8d57891 100644
--- a/src/mod/codecs/mod_opus/mod_opus.2017.vcxproj
+++ b/src/mod/codecs/mod_opus/mod_opus.2017.vcxproj
@@ -46,6 +46,7 @@
     <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <Import Project="$(SolutionDir)w32\opus.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
@@ -70,7 +71,7 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..\..\..\libs\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <DisableSpecificWarnings>6031;6053;6340;6246;6011;6387;%(DisableSpecificWarnings)</DisableSpecificWarnings>
@@ -86,7 +87,7 @@
       <TargetEnvironment>X64</TargetEnvironment>
     </Midl>
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..\..\..\libs\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <DisableSpecificWarnings>6031;6053;6340;6246;6011;6387;%(DisableSpecificWarnings)</DisableSpecificWarnings>
@@ -100,7 +101,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..\..\..\libs\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <DisableSpecificWarnings>6031;6053;6340;6246;6011;6387;%(DisableSpecificWarnings)</DisableSpecificWarnings>
@@ -116,7 +117,7 @@
       <TargetEnvironment>X64</TargetEnvironment>
     </Midl>
     <ClCompile>
-      <AdditionalIncludeDirectories>..\..\..\..\libs\opus-1.1\include;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <PrecompiledHeader>
       </PrecompiledHeader>
       <DisableSpecificWarnings>6031;6053;6340;6246;6011;6387;%(DisableSpecificWarnings)</DisableSpecificWarnings>
@@ -136,23 +137,6 @@
     <ClInclude Include="opus_parse.h" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\..\..\libs\win32\opus\opus.2017.vcxproj">
-      <Project>{FD60942F-72D6-4CA1-8B57-EA1D1B95A89E}</Project>
-      <ReferenceOutputAssembly>true</ReferenceOutputAssembly>
-      <Private>false</Private>
-      <CopyLocalSatelliteAssemblies>false</CopyLocalSatelliteAssemblies>
-      <LinkLibraryDependencies>true</LinkLibraryDependencies>
-      <UseLibraryDependencyInputs>false</UseLibraryDependencyInputs>
-    </ProjectReference>
-    <ProjectReference Include="..\..\..\..\libs\win32\opus\opus.celt.2017.vcxproj">
-      <Project>{245603e3-f580-41a5-9632-b25fe3372cbf}</Project>
-    </ProjectReference>
-    <ProjectReference Include="..\..\..\..\libs\win32\opus\opus.silk_common.2017.vcxproj">
-      <Project>{c303d2fc-ff97-49b8-9ddd-467b4c9a0b16}</Project>
-    </ProjectReference>
-    <ProjectReference Include="..\..\..\..\libs\win32\opus\opus.silk_float.2017.vcxproj">
-      <Project>{9c4961d2-5ddb-40c7-9be8-ca918dc4e782}</Project>
-    </ProjectReference>
     <ProjectReference Include="..\..\..\..\w32\Library\FreeSwitchCore.2017.vcxproj">
       <Project>{202d7a4e-760d-4d0e-afa1-d7459ced30ff}</Project>
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
diff --git a/w32/download_opus.props b/w32/download_opus.props
deleted file mode 100644
index a1859f3dbd..0000000000
--- a/w32/download_opus.props
+++ /dev/null
@@ -1,40 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ImportGroup Label="PropertySheets">
-    <Import Project="downloadpackage.task" Condition=" '$(downloadpackagetask_Imported)' == '' " />
-  </ImportGroup>
-  <PropertyGroup>
-    <downloadopusPropsImported>true</downloadopusPropsImported>
-  </PropertyGroup>
-
-  <!--
-       Download Target.
-       Name must be unique.
-       By design, targets are executed only once per project.
-
-       Usage:
-
-       package: URI
-
-       expectfileordirectory: Skips the download and extraction if exists
-
-       outputfolder: Folder to store a downloaded file.
-                     By default "$(BaseDir)libs", if empty
-
-       outputfilename: If not empty, overrides filename from URI.
-                       .exe files don't get extracted
-
-       extractto: Folder to extract an archive to
-   -->
-
-  <Target Name="opusDownloadTarget" BeforeTargets="CustomBuild;PreBuildEvent;" DependsOnTargets="7za">
-      <DownloadPackageTask
-           package="http://files.freeswitch.org/downloads/libs/opus-1.1.tar.gz"
-           expectfileordirectory="$(BaseDir)libs\opus-1.1\configure.ac"
-           outputfolder=""
-           outputfilename=""
-           extractto="$(BaseDir)libs\"
-      />
-  </Target>
-
-</Project>
diff --git a/w32/opus-version.props b/w32/opus-version.props
new file mode 100644
index 0000000000..738bd0c3a9
--- /dev/null
+++ b/w32/opus-version.props
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets">
+    <Import Project="basedir.props" Condition=" '$(BaseDirImported)' == ''"/>
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros">
+    <opusVersion>1.5.2</opusVersion>
+  </PropertyGroup>
+  <PropertyGroup>
+    <opusVersionImported>true</opusVersionImported>
+  </PropertyGroup>
+  <PropertyGroup />
+  <ItemDefinitionGroup />
+  <ItemGroup>
+    <BuildMacro Include="opusVersion">
+      <Value>$(opusVersion)</Value>
+    </BuildMacro>
+  </ItemGroup>
+</Project>
diff --git a/w32/opus.props b/w32/opus.props
new file mode 100644
index 0000000000..82cfb5f5af
--- /dev/null
+++ b/w32/opus.props
@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ImportGroup Label="PropertySheets">
+    <Import Project="opus-version.props" Condition=" '$(opusVersionImported)' == '' "/>
+    <Import Project="downloadpackage.task" Condition=" '$(downloadpackagetask_Imported)' == '' " />
+  </ImportGroup>
+
+  <PropertyGroup>
+    <opusPropsImported>true</opusPropsImported>
+  </PropertyGroup>
+
+  <PropertyGroup Label="UserMacros">
+    <opusDir>$(BaseDir)libs\opus-$(opusVersion)</opusDir>
+    <opusBinDir>$(opusDir)\binaries\$(Platform)\$(Configuration)</opusBinDir>
+    <opusPkgBase>https://github.com/freeswitch/opus-packaging/releases/download/opus-v$(opusVersion)</opusPkgBase>
+  </PropertyGroup>
+
+  <!--
+       Download Target.
+       Name must be unique.
+       By design, targets are executed only once per project.
+
+       Usage:
+
+       package: URI
+
+       expectfileordirectory: Skips the download and extraction if exists
+
+       outputfolder: Folder to store a downloaded file.
+                     By default "$(BaseDir)libs", if empty
+
+       outputfilename: If not empty, overrides filename from URI.
+                       .exe files don't get extracted
+
+       extractto: Folder to extract an archive to
+   -->
+
+  <!-- Download + extract the public headers (platform/configuration independent). -->
+  <Target Name="opusHeadersDownloadTarget" BeforeTargets="CustomBuild;PreBuildEvent;" DependsOnTargets="7za">
+    <DownloadPackageTask
+        package="$(opusPkgBase)/opus-$(opusVersion)-headers.zip"
+        expectfileordirectory="$(opusDir)\include\opus\opus.h"
+        outputfolder=""
+        outputfilename=""
+        extractto="$(BaseDir)libs\"
+    />
+  </Target>
+
+  <!-- Download + extract the per-platform, per-configuration binaries (DLL + import lib). -->
+  <Target Name="opusBinariesDownloadTarget" BeforeTargets="CustomBuild;PreBuildEvent;" DependsOnTargets="7za">
+    <DownloadPackageTask
+        package="$(opusPkgBase)/opus-$(opusVersion)-binaries-$(Platform.ToLower())-$(Configuration.ToLower()).zip"
+        expectfileordirectory="$(opusBinDir)\opus.lib"
+        outputfolder=""
+        outputfilename=""
+        extractto="$(BaseDir)libs\"
+    />
+  </Target>
+
+  <!-- Copy opus.dll next to the FreeSWITCH binary. SkipUnchangedFiles refreshes it
+       when the source differs, so republishing a package for the same version (or
+       switching configuration) updates the output DLL instead of leaving a stale one. -->
+  <Target Name="opusCopyTarget" BeforeTargets="CustomBuild" DependsOnTargets="opusBinariesDownloadTarget">
+    <Message Text="Copying opus.dll to the freeswitch output folder." Importance="High" />
+    <ItemGroup>
+      <opusFiles Include="$(opusBinDir)\*.dll"/>
+    </ItemGroup>
+    <Copy SkipUnchangedFiles="true"
+          SourceFiles="@(opusFiles)"
+          DestinationFiles="@(opusFiles->'$(BaseDir)\$(Platform)\$(Configuration)\%(Filename)%(Extension)')"
+    />
+  </Target>
+
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <!-- Both roots: `include` serves #include <opus/opus.h>, `include\opus` serves
+           the plain #include "opus.h" that mod_opus and mod_opusfile use. -->
+      <AdditionalIncludeDirectories>$(opusDir)\include;$(opusDir)\include\opus;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <AdditionalLibraryDirectories>$(opusBinDir);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+      <AdditionalDependencies>opus.lib;%(AdditionalDependencies)</AdditionalDependencies>
+    </Link>
+  </ItemDefinitionGroup>
+</Project>