#ifndef WH_AVUTIL_ATTRIBUTES_H_8960ee56_
#define WH_AVUTIL_ATTRIBUTES_H_8960ee56_

/*
 * This file was stolen from ffmpeg and modified for usability here.
 *  The original is
 * 
 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
 *
 * This version is a derivative work of that version.  It is not free
 *  software; it is licensed under the GNU Lesser General Public
 *  License version 2.1, which places nontrivial restrictions on what
 *  may be done with it.  (I'm not terribly happy about that, but for
 *  my purposes accepting LGPL-infected code is a lower price than
 *  reimplementing it all myself.)
 *
 * The LGPL v2.1 as distributed with ffmpeg is in the accompanying file
 *  `LGPL-v2.1'.
 */

#ifdef __GNUC__
#    define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y)
#else
#    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
#else
#    define av_always_inline inline
#endif
#endif

#ifndef av_noreturn
#if AV_GCC_VERSION_AT_LEAST(2,5)
#    define av_noreturn __attribute__((__noreturn__))
#else
#    define av_noreturn
#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 AV_GCC_VERSION_AT_LEAST(4,3)
#    define av_cold __attribute__((__cold__))
#else
#    define av_cold
#endif
#endif

#ifndef av_flatten
#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

/**
 * Disable warnings about deprecated features
 * This is useful for sections of code kept for backward compatibility and
 * scheduled for removal.
 */
#ifndef AV_NOWARN_DEPRECATED
#if AV_GCC_VERSION_AT_LEAST(4,6)
#    define AV_NOWARN_DEPRECATED(code) \
        _Pragma("GCC diagnostic push") \
        _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \
        code \
        _Pragma("GCC diagnostic pop")
#else
#    define AV_NOWARN_DEPRECATED(code) code
#endif
#endif


#ifndef av_unused
#if defined(__GNUC__)
#    define av_unused __attribute__((__unused__))
#else
#    define av_unused
#endif
#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.
 */
#ifndef av_used
#if AV_GCC_VERSION_AT_LEAST(3,1)
#    define av_used __attribute__((__used__))
#else
#    define av_used
#endif
#endif

#ifndef av_alias
#if AV_GCC_VERSION_AT_LEAST(3,3)
#   define av_alias __attribute__((__may_alias__))
#else
#   define av_alias
#endif
#endif

#ifndef av_uninit
#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
#    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

#endif