From b8962d64cc71af241601bcab5c3fcdc5735ef4ae Mon Sep 17 00:00:00 2001
From: Diego Biurrun <diego@biurrun.de>
Date: Fri, 15 Aug 2014 21:01:15 +0200
Subject: [PATCH] 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.
---
 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 78939be961..d9017c6b8d 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 f35a0765ce..b775e6c304 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"