From ab441e20ffdfa2547f1d6c1dc19994ec05eb7d2f Mon Sep 17 00:00:00 2001
From: Diego Biurrun <diego@biurrun.de>
Date: Tue, 22 Jan 2013 02:22:29 +0100
Subject: avutil: Move emms code to x86-specific header

---
 libavutil/x86/emms.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'libavutil/x86')

diff --git a/libavutil/x86/emms.h b/libavutil/x86/emms.h
index 6bb8ca3195..56068e581f 100644
--- a/libavutil/x86/emms.h
+++ b/libavutil/x86/emms.h
@@ -19,6 +19,28 @@
 #ifndef AVUTIL_X86_EMMS_H
 #define AVUTIL_X86_EMMS_H
 
+#include "config.h"
+#include "libavutil/attributes.h"
+
 void avpriv_emms_yasm(void);
 
+#if HAVE_MMX_INLINE
+/**
+ * Empty mmx state.
+ * this must be called between any dsp function and float/double code.
+ * for example sin(); dsp->idct_put(); emms_c(); cos()
+ */
+static av_always_inline void emms_c(void)
+{
+    __asm__ volatile ("emms" ::: "memory");
+}
+#elif HAVE_MMX && HAVE_MM_EMPTY
+#   include <mmintrin.h>
+#   define emms_c _mm_empty
+#elif HAVE_MMX && HAVE_YASM
+#   define emms_c avpriv_emms_yasm
+#else
+#   define emms_c()
+#endif /* HAVE_MMX_INLINE */
+
 #endif /* AVUTIL_X86_EMMS_H */
-- 
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