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 <span id="projectnumber">2.7.1</span>
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<a href="attributes_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at></span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This file is part of FFmpeg.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span>
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00008"></a>00008 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00009"></a>00009 <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment"> * Lesser General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span>
<a name="l00017"></a>00017 <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span>
<a name="l00018"></a>00018 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020 <span class="comment"></span>
<a name="l00021"></a>00021 <span class="comment">/**</span>
<a name="l00022"></a>00022 <span class="comment"> * @file</span>
<a name="l00023"></a>00023 <span class="comment"> * Macro definitions for various function/variable attributes</span>
<a name="l00024"></a>00024 <span class="comment"> */</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#ifndef AVUTIL_ATTRIBUTES_H</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_ATTRIBUTES_H</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span>
<a name="l00029"></a>00029 <span class="preprocessor">#ifdef __GNUC__</span>
<a name="l00030"></a><a class="code" href="attributes_8h.html#a69fc4855d57a0b3471e795107677e5c4">00030</a> <span class="preprocessor"></span><span class="preprocessor"># define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > (x) || __GNUC__ == (x) && __GNUC_MINOR__ >= (y))</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor"># define AV_GCC_VERSION_AT_LEAST(x,y) 0</span>
<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="preprocessor">#ifndef av_always_inline</span>
<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(3,1)</span>
<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor"># define av_always_inline __attribute__((always_inline)) inline</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor">#elif defined(_MSC_VER)</span>
<a name="l00039"></a>00039 <span class="preprocessor"></span><span class="preprocessor"># define av_always_inline __forceinline</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="preprocessor"># define av_always_inline inline</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span>
<a name="l00045"></a>00045 <span class="preprocessor">#ifndef av_extern_inline</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor">#if defined(__ICL) && __ICL >= 1210 || defined(__GNUC_STDC_INLINE__)</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span><span class="preprocessor"># define av_extern_inline extern inline</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00049"></a>00049 <span class="preprocessor"></span><span class="preprocessor"># define av_extern_inline inline</span>
<a name="l00050"></a>00050 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00052"></a>00052 <span class="preprocessor"></span>
<a name="l00053"></a>00053 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(3,1)</span>
<a name="l00054"></a><a class="code" href="attributes_8h.html#a299375f4aab80f039568d03b5c2f4214">00054</a> <span class="preprocessor"></span><span class="preprocessor"># define av_noinline __attribute__((noinline))</span>
<a name="l00055"></a>00055 <span class="preprocessor"></span><span class="preprocessor">#elif defined(_MSC_VER)</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span><span class="preprocessor"># define av_noinline __declspec(noinline)</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00058"></a>00058 <span class="preprocessor"></span><span class="preprocessor"># define av_noinline</span>
<a name="l00059"></a>00059 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00060"></a>00060 <span class="preprocessor"></span>
<a name="l00061"></a>00061 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(3,1)</span>
<a name="l00062"></a><a class="code" href="attributes_8h.html#adc7fd5bb40d84900a3a30ef3318020c2">00062</a> <span class="preprocessor"></span><span class="preprocessor"># define av_pure __attribute__((pure))</span>
<a name="l00063"></a>00063 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00064"></a>00064 <span class="preprocessor"></span><span class="preprocessor"># define av_pure</span>
<a name="l00065"></a>00065 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00066"></a>00066 <span class="preprocessor"></span>
<a name="l00067"></a>00067 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(2,6)</span>
<a name="l00068"></a><a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">00068</a> <span class="preprocessor"></span><span class="preprocessor"># define av_const __attribute__((const))</span>
<a name="l00069"></a>00069 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00070"></a>00070 <span class="preprocessor"></span><span class="preprocessor"># define av_const</span>
<a name="l00071"></a>00071 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00072"></a>00072 <span class="preprocessor"></span>
<a name="l00073"></a>00073 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(4,3)</span>
<a name="l00074"></a><a class="code" href="attributes_8h.html#abeeb324fff79a5335d36774704e2475c">00074</a> <span class="preprocessor"></span><span class="preprocessor"># define av_cold __attribute__((cold))</span>
<a name="l00075"></a>00075 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00076"></a>00076 <span class="preprocessor"></span><span class="preprocessor"># define av_cold</span>
<a name="l00077"></a>00077 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00078"></a>00078 <span class="preprocessor"></span>
<a name="l00079"></a>00079 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(4,1) && !defined(__llvm__)</span>
<a name="l00080"></a><a class="code" href="attributes_8h.html#a767318f92f3dcb0a604c6beaa910eb0c">00080</a> <span class="preprocessor"></span><span class="preprocessor"># define av_flatten __attribute__((flatten))</span>
<a name="l00081"></a>00081 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00082"></a>00082 <span class="preprocessor"></span><span class="preprocessor"># define av_flatten</span>
<a name="l00083"></a>00083 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span>
<a name="l00085"></a>00085 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(3,1)</span>
<a name="l00086"></a><a class="code" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">00086</a> <span class="preprocessor"></span><span class="preprocessor"># define attribute_deprecated __attribute__((deprecated))</span>
<a name="l00087"></a>00087 <span class="preprocessor"></span><span class="preprocessor">#elif defined(_MSC_VER)</span>
<a name="l00088"></a>00088 <span class="preprocessor"></span><span class="preprocessor"># define attribute_deprecated __declspec(deprecated)</span>
<a name="l00089"></a>00089 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00090"></a>00090 <span class="preprocessor"></span><span class="preprocessor"># define attribute_deprecated</span>
<a name="l00091"></a>00091 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00092"></a>00092 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00093"></a>00093 <span class="comment">/**</span>
<a name="l00094"></a>00094 <span class="comment"> * Disable warnings about deprecated features</span>
<a name="l00095"></a>00095 <span class="comment"> * This is useful for sections of code kept for backward compatibility and</span>
<a name="l00096"></a>00096 <span class="comment"> * scheduled for removal.</span>
<a name="l00097"></a>00097 <span class="comment"> */</span>
<a name="l00098"></a>00098 <span class="preprocessor">#ifndef AV_NOWARN_DEPRECATED</span>
<a name="l00099"></a>00099 <span class="preprocessor"></span><span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(4,6)</span>
<a name="l00100"></a>00100 <span class="preprocessor"></span><span class="preprocessor"># define AV_NOWARN_DEPRECATED(code) \</span>
<a name="l00101"></a>00101 <span class="preprocessor"> _Pragma("GCC diagnostic push") \</span>
<a name="l00102"></a>00102 <span class="preprocessor"> _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \</span>
<a name="l00103"></a>00103 <span class="preprocessor"> code \</span>
<a name="l00104"></a>00104 <span class="preprocessor"> _Pragma("GCC diagnostic pop")</span>
<a name="l00105"></a>00105 <span class="preprocessor"></span><span class="preprocessor">#elif defined(_MSC_VER)</span>
<a name="l00106"></a>00106 <span class="preprocessor"></span><span class="preprocessor"># define AV_NOWARN_DEPRECATED(code) \</span>
<a name="l00107"></a>00107 <span class="preprocessor"> __pragma(warning(push)) \</span>
<a name="l00108"></a>00108 <span class="preprocessor"> __pragma(warning(disable : 4996)) \</span>
<a name="l00109"></a>00109 <span class="preprocessor"> code; \</span>
<a name="l00110"></a>00110 <span class="preprocessor"> __pragma(warning(pop))</span>
<a name="l00111"></a>00111 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00112"></a>00112 <span class="preprocessor"></span><span class="preprocessor"># define AV_NOWARN_DEPRECATED(code) code</span>
<a name="l00113"></a>00113 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00114"></a>00114 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00115"></a>00115 <span class="preprocessor"></span>
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="preprocessor">#if defined(__GNUC__)</span>
<a name="l00118"></a><a class="code" href="attributes_8h.html#a7ca8a3900269f92fcc7b68235dea7787">00118</a> <span class="preprocessor"></span><span class="preprocessor"># define av_unused __attribute__((unused))</span>
<a name="l00119"></a>00119 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00120"></a>00120 <span class="preprocessor"></span><span class="preprocessor"># define av_unused</span>
<a name="l00121"></a>00121 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00122"></a>00122 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00123"></a>00123 <span class="comment">/**</span>
<a name="l00124"></a>00124 <span class="comment"> * Mark a variable as used and prevent the compiler from optimizing it</span>
<a name="l00125"></a>00125 <span class="comment"> * away. This is useful for variables accessed only from inline</span>
<a name="l00126"></a>00126 <span class="comment"> * assembler without the compiler being aware.</span>
<a name="l00127"></a>00127 <span class="comment"> */</span>
<a name="l00128"></a>00128 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(3,1)</span>
<a name="l00129"></a><a class="code" href="attributes_8h.html#aa402443f9068fb645e9a55f41fc99e09">00129</a> <span class="preprocessor"></span><span class="preprocessor"># define av_used __attribute__((used))</span>
<a name="l00130"></a>00130 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00131"></a>00131 <span class="preprocessor"></span><span class="preprocessor"># define av_used</span>
<a name="l00132"></a>00132 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00133"></a>00133 <span class="preprocessor"></span>
<a name="l00134"></a>00134 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(3,3)</span>
<a name="l00135"></a><a class="code" href="attributes_8h.html#ae7fb094d0e833b9afe387f7283dbbad3">00135</a> <span class="preprocessor"></span><span class="preprocessor"># define av_alias __attribute__((may_alias))</span>
<a name="l00136"></a>00136 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00137"></a>00137 <span class="preprocessor"></span><span class="preprocessor"># define av_alias</span>
<a name="l00138"></a>00138 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00139"></a>00139 <span class="preprocessor"></span>
<a name="l00140"></a>00140 <span class="preprocessor">#if defined(__GNUC__) && !defined(__INTEL_COMPILER) && !defined(__clang__)</span>
<a name="l00141"></a><a class="code" href="attributes_8h.html#a934ff195492486f0f9d22770103e757b">00141</a> <span class="preprocessor"></span><span class="preprocessor"># define av_uninit(x) x=x</span>
<a name="l00142"></a>00142 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00143"></a>00143 <span class="preprocessor"></span><span class="preprocessor"># define av_uninit(x) x</span>
<a name="l00144"></a>00144 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00145"></a>00145 <span class="preprocessor"></span>
<a name="l00146"></a>00146 <span class="preprocessor">#ifdef __GNUC__</span>
<a name="l00147"></a><a class="code" href="attributes_8h.html#a4887afda7f138d25d3f0dd843ca0ac18">00147</a> <span class="preprocessor"></span><span class="preprocessor"># define av_builtin_constant_p __builtin_constant_p</span>
<a name="l00148"></a><a class="code" href="attributes_8h.html#a4b078d4b8e02c0f452ee1dcaa7d983d3">00148</a> <span class="preprocessor"></span><span class="preprocessor"># define av_printf_format(fmtpos, attrpos) __attribute__((__format__(__printf__, fmtpos, attrpos)))</span>
<a name="l00149"></a>00149 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00150"></a>00150 <span class="preprocessor"></span><span class="preprocessor"># define av_builtin_constant_p(x) 0</span>
<a name="l00151"></a>00151 <span class="preprocessor"></span><span class="preprocessor"># define av_printf_format(fmtpos, attrpos)</span>
<a name="l00152"></a>00152 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00153"></a>00153 <span class="preprocessor"></span>
<a name="l00154"></a>00154 <span class="preprocessor">#if AV_GCC_VERSION_AT_LEAST(2,5)</span>
<a name="l00155"></a><a class="code" href="attributes_8h.html#ac85a6b34744701495efddc98c65e8afa">00155</a> <span class="preprocessor"></span><span class="preprocessor"># define av_noreturn __attribute__((noreturn))</span>
<a name="l00156"></a>00156 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00157"></a>00157 <span class="preprocessor"></span><span class="preprocessor"># define av_noreturn</span>
<a name="l00158"></a>00158 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00159"></a>00159 <span class="preprocessor"></span>
<a name="l00160"></a>00160 <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_ATTRIBUTES_H */</span>
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