FS-11394: [mod_av] Enable HW acceleration on Windows. Use FFmpeg 3.4.4 instead of libav.

src/mod/applications/mod_av/avcodec.c

@@ -710,8 +710,8 @@ void rtp_callback(struct AVCodecContext *avctx, void *data, int size, int mb_nb)
 }
 #endif
 
-const uint8_t *fs_h263_find_resync_marker_reverse(const uint8_t *restrict start,
-												  const uint8_t *restrict end)
+const uint8_t *fs_h263_find_resync_marker_reverse(const uint8_t *av_restrict start,
+												  const uint8_t *av_restrict end)
 {
 	const uint8_t *p = end - 1;
 	start += 1; /* Make sure we never return the original start. */

src/mod/applications/mod_av/mod_av.2017.vcxproj

@@ -46,7 +46,7 @@
     <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <Import Project="$(SolutionDir)w32\libav.props" />
+  <Import Project="$(SolutionDir)w32\ffmpeg.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>
   <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="PropertySheets">
@@ -141,9 +141,8 @@
     <ClCompile Include="mod_av.c" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\..\..\..\libs\win32\libav\libav.2017.vcxproj">
-      <Project>{841C345F-FCC7-4F64-8F54-0281CEABEB01}</Project>
-      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
+    <ProjectReference Include="..\..\..\..\libs\win32\ffmpeg\ffmpeg.2017.vcxproj">
+      <Project>{bc1fd72e-1cd5-4525-a7f5-17c5740bfded}</Project>
     </ProjectReference>
     <ProjectReference Include="..\..\..\..\w32\Library\FreeSwitchCore.2017.vcxproj">
       <Project>{202d7a4e-760d-4d0e-afa1-d7459ced30ff}</Project>