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    /*
     * copyright (c) 2010 Michael Niedermayer <michaelni@gmx.at>
     *
    
     * This file is part of Libav.
    
     * Libav is free software; you can redistribute it and/or
    
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     * 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.
     *
    
     * Libav is distributed in the hope that it will be useful,
    
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     * 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 Libav; if not, write to the Free Software
    
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     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     */
    
    /**
     * @file
     * simple assert() macros that are a bit more flexible than ISO C assert().
     * @author Michael Niedermayer <michaelni@gmx.at>
     */
    
    
    #ifndef AVUTIL_AVASSERT_H
    #define AVUTIL_AVASSERT_H
    
    #include <stdlib.h>
    
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    #include "avutil.h"
    #include "log.h"
    
    /**
     * assert() equivalent, that is always enabled.
     */
    
    #define av_assert0(cond) do {                                           \
        if (!(cond)) {                                                      \
            av_log(NULL, AV_LOG_FATAL, "Assertion %s failed at %s:%d\n",    \
                   AV_STRINGIFY(cond), __FILE__, __LINE__);                 \
            abort();                                                        \
        }                                                                   \
    } while (0)
    
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    /**
     * assert() equivalent, that does not lie in speed critical code.
     * These asserts() thus can be enabled without fearing speedloss.
     */
    #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 0
    
    #define av_assert1(cond) av_assert0(cond)
    
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    #else
    #define av_assert1(cond) ((void)0)
    #endif
    
    
    /**
     * assert() equivalent, that does lie in speed critical code.
     */
    #if defined(ASSERT_LEVEL) && ASSERT_LEVEL > 1
    
    #define av_assert2(cond) av_assert0(cond)
    
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    #else
    #define av_assert2(cond) ((void)0)
    #endif
    
    
    #endif /* AVUTIL_AVASSERT_H */