/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file libavutil/attributes.h
+ * @file
* Macro definitions for various function/variable attributes
*/
# define AV_GCC_VERSION_AT_LEAST(x,y) 0
#endif
-#ifndef av_always_inline
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define av_always_inline __attribute__((always_inline)) inline
+#elif defined(_MSC_VER)
+# define av_always_inline __forceinline
#else
# define av_always_inline inline
#endif
-#endif
-#ifndef av_noinline
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define av_noinline __attribute__((noinline))
+#elif defined(_MSC_VER)
+# define av_noinline __declspec(noinline)
#else
# define av_noinline
#endif
-#endif
-#ifndef av_pure
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define av_pure __attribute__((pure))
#else
# define av_pure
#endif
-#endif
-#ifndef av_const
#if AV_GCC_VERSION_AT_LEAST(2,6)
# define av_const __attribute__((const))
#else
# define av_const
#endif
-#endif
-#ifndef av_cold
-#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,3)
+#if AV_GCC_VERSION_AT_LEAST(4,3)
# define av_cold __attribute__((cold))
#else
# define av_cold
#endif
-#endif
-#ifndef av_flatten
-#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,1)
+#if AV_GCC_VERSION_AT_LEAST(4,1) && !defined(__llvm__)
# define av_flatten __attribute__((flatten))
#else
# define av_flatten
#endif
-#endif
-#ifndef attribute_deprecated
#if AV_GCC_VERSION_AT_LEAST(3,1)
# define attribute_deprecated __attribute__((deprecated))
+#elif defined(_MSC_VER)
+# define attribute_deprecated __declspec(deprecated)
#else
# define attribute_deprecated
#endif
-#endif
-#ifndef av_unused
#if defined(__GNUC__)
# define av_unused __attribute__((unused))
#else
# define av_unused
#endif
+
+/**
+ * Mark a variable as used and prevent the compiler from optimizing it
+ * away. This is useful for variables accessed only from inline
+ * assembler without the compiler being aware.
+ */
+#if AV_GCC_VERSION_AT_LEAST(3,1)
+# define av_used __attribute__((used))
+#else
+# define av_used
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(3,3)
+# define av_alias __attribute__((may_alias))
+#else
+# define av_alias
#endif
-#ifndef av_uninit
#if defined(__GNUC__) && !defined(__ICC)
# define av_uninit(x) x=x
#else
# define av_uninit(x) x
#endif
-#endif
#ifdef __GNUC__
# define av_builtin_constant_p __builtin_constant_p
+# define av_printf_format(fmtpos, attrpos) __attribute__((__format__(__printf__, fmtpos, attrpos)))
#else
# define av_builtin_constant_p(x) 0
+# define av_printf_format(fmtpos, attrpos)
+#endif
+
+#if AV_GCC_VERSION_AT_LEAST(2,5)
+# define av_noreturn __attribute__((noreturn))
+#else
+# define av_noreturn
#endif
#endif /* AVUTIL_ATTRIBUTES_H */