WinRT: build fixes

These fixes are lumped into two categories:

1. add new file, SDL_dataqueue.c, to UWP/WinRT build-inputs (via MSVC project
   files)

2. implement a temporary, hack-fix for a build error in SDL_xinputjoystick.c.
   Win32's Raw Input APIs are, unfortunately, not available for use in UWP/WinRT
   APIs.  There does appear to be a replacement API, available in the
   Windows.Devices.HumanInterfaceDevice namespace.

   This fix should be sufficient to get SDL compiling again, without affecting
   Win32 builds, however using the UWP/WinRT API (in UWP/WinRT builds) would
   almost certainly be better (for UWP/WinRT builds).

   TODO: research Windows.Devices.HumanInterfaceDevice, and use that if and as
   appropriate.

VisualC-WinRT/UWP_VS2015/SDL-UWP.vcxproj

@@ -132,6 +132,7 @@
     <ClInclude Include="..\..\src\render\software\SDL_render_sw_c.h" />
     <ClInclude Include="..\..\src\render\software\SDL_rotate.h" />
     <ClInclude Include="..\..\src\SDL_assert_c.h" />
+    <ClInclude Include="..\..\src\SDL_dataqueue.h" />
     <ClInclude Include="..\..\src\SDL_error_c.h" />
     <ClInclude Include="..\..\src\SDL_fatal.h" />
     <ClInclude Include="..\..\src\SDL_hints_c.h" />
@@ -265,6 +266,7 @@
     <ClCompile Include="..\..\src\render\software\SDL_rotate.c" />
     <ClCompile Include="..\..\src\SDL.c" />
     <ClCompile Include="..\..\src\SDL_assert.c" />
+    <ClCompile Include="..\..\src\SDL_dataqueue.c" />
     <ClCompile Include="..\..\src\SDL_error.c" />
     <ClCompile Include="..\..\src\SDL_hints.c" />
     <ClCompile Include="..\..\src\SDL_log.c" />

VisualC-WinRT/UWP_VS2015/SDL-UWP.vcxproj.filters

@@ -402,6 +402,9 @@
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\SDL_dataqueue.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\atomic\SDL_atomic.c">
@@ -719,5 +722,8 @@
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\SDL_dataqueue.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>

VisualC-WinRT/WinPhone80_VS2012/SDL-WinPhone80.vcxproj

@@ -250,6 +250,7 @@
     <ClInclude Include="..\..\src\render\software\SDL_render_sw_c.h" />
     <ClInclude Include="..\..\src\render\software\SDL_rotate.h" />
     <ClInclude Include="..\..\src\SDL_assert_c.h" />
+    <ClInclude Include="..\..\src\SDL_dataqueue.h" />
     <ClInclude Include="..\..\src\SDL_error_c.h" />
     <ClInclude Include="..\..\src\SDL_fatal.h" />
     <ClInclude Include="..\..\src\SDL_hints_c.h" />
@@ -364,6 +365,7 @@
     <ClCompile Include="..\..\src\render\software\SDL_rotate.c" />
     <ClCompile Include="..\..\src\SDL.c" />
     <ClCompile Include="..\..\src\SDL_assert.c" />
+    <ClCompile Include="..\..\src\SDL_dataqueue.c" />
     <ClCompile Include="..\..\src\SDL_error.c" />
     <ClCompile Include="..\..\src\SDL_hints.c" />
     <ClCompile Include="..\..\src\SDL_log.c" />

VisualC-WinRT/WinPhone80_VS2012/SDL-WinPhone80.vcxproj.filters

@@ -372,6 +372,9 @@
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\SDL_dataqueue.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\atomic\SDL_atomic.c">
@@ -677,5 +680,8 @@
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\SDL_dataqueue.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>

VisualC-WinRT/WinPhone81_VS2013/SDL-WinPhone81.vcxproj

@@ -116,6 +116,7 @@
     <ClInclude Include="..\..\src\render\software\SDL_render_sw_c.h" />
     <ClInclude Include="..\..\src\render\software\SDL_rotate.h" />
     <ClInclude Include="..\..\src\SDL_assert_c.h" />
+    <ClInclude Include="..\..\src\SDL_dataqueue.h" />
     <ClInclude Include="..\..\src\SDL_error_c.h" />
     <ClInclude Include="..\..\src\SDL_fatal.h" />
     <ClInclude Include="..\..\src\SDL_hints_c.h" />
@@ -230,6 +231,7 @@
     <ClCompile Include="..\..\src\render\software\SDL_rotate.c" />
     <ClCompile Include="..\..\src\SDL.c" />
     <ClCompile Include="..\..\src\SDL_assert.c" />
+    <ClCompile Include="..\..\src\SDL_dataqueue.c" />
     <ClCompile Include="..\..\src\SDL_error.c" />
     <ClCompile Include="..\..\src\SDL_hints.c" />
     <ClCompile Include="..\..\src\SDL_log.c" />

VisualC-WinRT/WinPhone81_VS2013/SDL-WinPhone81.vcxproj.filters

@@ -381,6 +381,9 @@
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\SDL_dataqueue.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\atomic\SDL_atomic.c">
@@ -689,5 +692,8 @@
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\SDL_dataqueue.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>

VisualC-WinRT/WinRT80_VS2012/SDL-WinRT80.vcxproj

@@ -129,6 +129,7 @@
     <ClCompile Include="..\..\src\render\software\SDL_rotate.c" />
     <ClCompile Include="..\..\src\SDL.c" />
     <ClCompile Include="..\..\src\SDL_assert.c" />
+    <ClCompile Include="..\..\src\SDL_dataqueue.c" />
     <ClCompile Include="..\..\src\SDL_error.c" />
     <ClCompile Include="..\..\src\SDL_hints.c" />
     <ClCompile Include="..\..\src\SDL_log.c" />
@@ -337,6 +338,7 @@
     <ClInclude Include="..\..\src\render\software\SDL_render_sw_c.h" />
     <ClInclude Include="..\..\src\render\software\SDL_rotate.h" />
     <ClInclude Include="..\..\src\SDL_assert_c.h" />
+    <ClInclude Include="..\..\src\SDL_dataqueue.h" />
     <ClInclude Include="..\..\src\SDL_error_c.h" />
     <ClInclude Include="..\..\src\SDL_fatal.h" />
     <ClInclude Include="..\..\src\SDL_hints_c.h" />

VisualC-WinRT/WinRT80_VS2012/SDL-WinRT80.vcxproj.filters

@@ -319,6 +319,9 @@
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\SDL_dataqueue.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\include\begin_code.h">
@@ -717,6 +720,9 @@
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\SDL_dataqueue.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="Header Files">

VisualC-WinRT/WinRT81_VS2013/SDL-WinRT81.vcxproj

@@ -131,6 +131,7 @@
     <ClInclude Include="..\..\src\render\software\SDL_render_sw_c.h" />
     <ClInclude Include="..\..\src\render\software\SDL_rotate.h" />
     <ClInclude Include="..\..\src\SDL_assert_c.h" />
+    <ClInclude Include="..\..\src\SDL_dataqueue.h" />
     <ClInclude Include="..\..\src\SDL_error_c.h" />
     <ClInclude Include="..\..\src\SDL_fatal.h" />
     <ClInclude Include="..\..\src\SDL_hints_c.h" />
@@ -262,6 +263,7 @@
     <ClCompile Include="..\..\src\render\software\SDL_rotate.c" />
     <ClCompile Include="..\..\src\SDL.c" />
     <ClCompile Include="..\..\src\SDL_assert.c" />
+    <ClCompile Include="..\..\src\SDL_dataqueue.c" />
     <ClCompile Include="..\..\src\SDL_error.c" />
     <ClCompile Include="..\..\src\SDL_hints.c" />
     <ClCompile Include="..\..\src\SDL_log.c" />

VisualC-WinRT/WinRT81_VS2013/SDL-WinRT81.vcxproj.filters

@@ -393,6 +393,9 @@
     <ClInclude Include="..\..\src\video\winrt\SDL_winrtgamebar_cpp.h">
       <Filter>Source Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\SDL_dataqueue.h">
+      <Filter>Source Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\src\atomic\SDL_atomic.c">
@@ -713,5 +716,8 @@
     <ClCompile Include="..\..\src\video\winrt\SDL_winrtgamebar.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\SDL_dataqueue.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>

src/joystick/windows/SDL_xinputjoystick.c

@@ -38,11 +38,16 @@ static SDL_bool s_bXInputEnabled = SDL_TRUE;
 static SDL_bool
 SDL_XInputUseOldJoystickMapping()
 {
+#ifdef __WINRT__
+    /* TODO: remove this __WINRT__ block, but only after integrating with UWP/WinRT's HID API */
+    return SDL_TRUE;
+#else
     static int s_XInputUseOldJoystickMapping = -1;
     if (s_XInputUseOldJoystickMapping < 0) {
         s_XInputUseOldJoystickMapping = SDL_GetHintBoolean(SDL_HINT_XINPUT_USE_OLD_JOYSTICK_MAPPING, SDL_FALSE);
     }
     return (s_XInputUseOldJoystickMapping > 0);
+#endif
 }
 
 SDL_bool SDL_XINPUT_Enabled(void)
@@ -110,6 +115,8 @@ GetXInputName(const Uint8 userid, BYTE SubType)
 static void
 GuessXInputDevice(UINT device_index, Uint16 *pVID, Uint16 *pPID, Uint16 *pVersion)
 {
+#ifndef __WINRT__   /* TODO: remove this ifndef __WINRT__ block, but only after integrating with UWP/WinRT's HID API */
+
     PRAWINPUTDEVICELIST devices = NULL;
     UINT i, found_count = 0, device_count = 0;
 
@@ -151,6 +158,7 @@ GuessXInputDevice(UINT device_index, Uint16 *pVID, Uint16 *pPID, Uint16 *pVersio
         }
     }
     SDL_free(devices);
+#endif  /* ifndef __WINRT__ */
 }
 
 static void