[FFmpeg-cvslog] dxva2: Clean up definition of _WIN32_WINNT

[Diego Biurrun]

ffmpeg | branch: master | Diego Biurrun <diego at biurrun.de> | Fri Aug 15 21:01:15 2014 +0200| [b8962d64cc71af241601bcab5c3fcdc5735ef4ae] | committer: Diego Biurrun

dxva2: Clean up definition of _WIN32_WINNT

Only set a value if _WIN32_WINNT is undefined or smaller than 0x0600. This is
cleaner than unconditional definition and avoids a number of redefinition
warnings. Also only define a value in one of the two dxva2 headers.

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b8962d64cc71af241601bcab5c3fcdc5735ef4ae
---

 libavcodec/dxva2.h          |    4 ++++
 libavcodec/dxva2_internal.h |    1 -
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/libavcodec/dxva2.h b/libavcodec/dxva2.h
index 78939be..d9017c6 100644
--- a/libavcodec/dxva2.h
+++ b/libavcodec/dxva2.h
@@ -29,7 +29,11 @@
  * Public libavcodec DXVA2 header.
  */
 
+#if !defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600
+#undef _WIN32_WINNT
 #define _WIN32_WINNT 0x0600
+#endif
+
 #include <stdint.h>
 #include <d3d9.h>
 #include <dxva2api.h>
diff --git a/libavcodec/dxva2_internal.h b/libavcodec/dxva2_internal.h
index f35a076..b775e6c 100644
--- a/libavcodec/dxva2_internal.h
+++ b/libavcodec/dxva2_internal.h
@@ -23,7 +23,6 @@
 #ifndef AVCODEC_DXVA_INTERNAL_H
 #define AVCODEC_DXVA_INTERNAL_H
 
-#define _WIN32_WINNT 0x0600
 #define COBJMACROS
 
 #include "config.h"