avconv: print an error on applying options of the wrong type.

[ffmpeg] / libavutil / attributes.h

diff --git a/libavutil/attributes.h b/libavutil/attributes.h
index 1208bc0c72030edb3a9b031131ea2d47da1b9e36..292a0a1a88f095e80e33dcb2b3e3bd3102f6542f 100644 (file)
--- a/libavutil/attributes.h
+++ b/libavutil/attributes.h
@@ -1,25 +1,25 @@
 /*
  * 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
  */
 
@@ -32,82 +32,91 @@
 #    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))
 #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)
 #    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))
 #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 */