From 8992cb1d0d07edc33d274f6d7924ecdf6f83d994 Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@eclectronics.org>
Date: Thu, 5 Sep 2013 17:57:22 +0100
Subject: making act segmenter

---
 ffmpeg/libavutil/atomic_win32.h | 55 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 ffmpeg/libavutil/atomic_win32.h

(limited to 'ffmpeg/libavutil/atomic_win32.h')

diff --git a/ffmpeg/libavutil/atomic_win32.h b/ffmpeg/libavutil/atomic_win32.h
new file mode 100644
index 0000000..f4ee078
--- /dev/null
+++ b/ffmpeg/libavutil/atomic_win32.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2012 Ronald S. Bultje <rsbultje@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ATOMIC_WIN32_H
+#define AVUTIL_ATOMIC_WIN32_H
+
+#include <windows.h>
+
+#include "atomic.h"
+
+#define avpriv_atomic_int_get atomic_int_get_win32
+static inline int atomic_int_get_win32(volatile int *ptr)
+{
+    MemoryBarrier();
+    return *ptr;
+}
+
+#define avpriv_atomic_int_set atomic_int_set_win32
+static inline void atomic_int_set_win32(volatile int *ptr, int val)
+{
+    *ptr = val;
+    MemoryBarrier();
+}
+
+#define avpriv_atomic_int_add_and_fetch atomic_int_add_and_fetch_win32
+static inline int atomic_int_add_and_fetch_win32(volatile int *ptr, int inc)
+{
+    return inc + InterlockedExchangeAdd(ptr, inc);
+}
+
+#define avpriv_atomic_ptr_cas atomic_ptr_cas_win32
+static inline void *atomic_ptr_cas_win32(void * volatile *ptr,
+                                         void *oldval, void *newval)
+{
+    return InterlockedCompareExchangePointer(ptr, newval, oldval);
+}
+
+#endif /* AVUTIL_ATOMIC_WIN32_H */
-- 
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