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<a href="bswap_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"> * byte swapping routines</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_BSWAP_H</span>
<a name="l00027"></a>00027 <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_BSWAP_H</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <stdint.h></span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "libavutil/avconfig.h"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="attributes_8h.html" title="Macro definitions for various function/variable attributes.">attributes.h</a>"</span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="preprocessor">#ifdef HAVE_AV_CONFIG_H</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include "config.h"</span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="preprocessor">#if ARCH_AARCH64</span>
<a name="l00038"></a>00038 <span class="preprocessor"></span><span class="preprocessor"># include "aarch64/bswap.h"</span>
<a name="l00039"></a>00039 <span class="preprocessor">#elif ARCH_ARM</span>
<a name="l00040"></a>00040 <span class="preprocessor"></span><span class="preprocessor"># include "arm/bswap.h"</span>
<a name="l00041"></a>00041 <span class="preprocessor">#elif ARCH_AVR32</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span><span class="preprocessor"># include "avr32/bswap.h"</span>
<a name="l00043"></a>00043 <span class="preprocessor">#elif ARCH_SH4</span>
<a name="l00044"></a>00044 <span class="preprocessor"></span><span class="preprocessor"># include "sh4/bswap.h"</span>
<a name="l00045"></a>00045 <span class="preprocessor">#elif ARCH_X86</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor"># include "x86/bswap.h"</span>
<a name="l00047"></a>00047 <span class="preprocessor">#endif</span>
<a name="l00048"></a>00048 <span class="preprocessor"></span>
<a name="l00049"></a>00049 <span class="preprocessor">#endif </span><span class="comment">/* HAVE_AV_CONFIG_H */</span>
<a name="l00050"></a>00050
<a name="l00051"></a><a class="code" href="bswap_8h.html#ae814c79414a68cd818fa85b537e512ca">00051</a> <span class="preprocessor">#define AV_BSWAP16C(x) (((x) << 8 & 0xff00) | ((x) >> 8 & 0x00ff))</span>
<a name="l00052"></a><a class="code" href="bswap_8h.html#acd0be1ea0d53f0e778ba453d6a8a2ba7">00052</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_BSWAP32C(x) (AV_BSWAP16C(x) << 16 | AV_BSWAP16C((x) >> 16))</span>
<a name="l00053"></a><a class="code" href="bswap_8h.html#a0231c6b30e9577aa7866e96bd6b14d1d">00053</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_BSWAP64C(x) (AV_BSWAP32C(x) << 32 | AV_BSWAP32C((x) >> 32))</span>
<a name="l00054"></a>00054 <span class="preprocessor"></span>
<a name="l00055"></a><a class="code" href="bswap_8h.html#a4e7a1254648283f96e02ff832c42b0d1">00055</a> <span class="preprocessor">#define AV_BSWAPC(s, x) AV_BSWAP##s##C(x)</span>
<a name="l00056"></a>00056 <span class="preprocessor"></span>
<a name="l00057"></a>00057 <span class="preprocessor">#ifndef av_bswap16</span>
<a name="l00058"></a><a class="code" href="bswap_8h.html#acd93aba4dbc490bca8ed9057f6816b5a">00058</a> <span class="preprocessor"></span><span class="keyword">static</span> av_always_inline <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> uint16_t <a class="code" href="bswap_8h.html#acd93aba4dbc490bca8ed9057f6816b5a">av_bswap16</a>(uint16_t x)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 x= (x>>8) | (x<<8);
<a name="l00061"></a>00061 <span class="keywordflow">return</span> x;
<a name="l00062"></a>00062 }
<a name="l00063"></a>00063 <span class="preprocessor">#endif</span>
<a name="l00064"></a>00064 <span class="preprocessor"></span>
<a name="l00065"></a>00065 <span class="preprocessor">#ifndef av_bswap32</span>
<a name="l00066"></a><a class="code" href="bswap_8h.html#af620b9064c4d86e0c80c63de965678ae">00066</a> <span class="preprocessor"></span><span class="keyword">static</span> av_always_inline <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> uint32_t <a class="code" href="bswap_8h.html#af620b9064c4d86e0c80c63de965678ae">av_bswap32</a>(uint32_t x)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 <span class="keywordflow">return</span> <a class="code" href="bswap_8h.html#acd0be1ea0d53f0e778ba453d6a8a2ba7">AV_BSWAP32C</a>(x);
<a name="l00069"></a>00069 }
<a name="l00070"></a>00070 <span class="preprocessor">#endif</span>
<a name="l00071"></a>00071 <span class="preprocessor"></span>
<a name="l00072"></a>00072 <span class="preprocessor">#ifndef av_bswap64</span>
<a name="l00073"></a><a class="code" href="bswap_8h.html#a2fb2d4d0f205a1897de581749d8774dc">00073</a> <span class="preprocessor"></span><span class="keyword">static</span> <span class="keyword">inline</span> uint64_t <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <a class="code" href="bswap_8h.html#a2fb2d4d0f205a1897de581749d8774dc">av_bswap64</a>(uint64_t x)
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 <span class="keywordflow">return</span> (uint64_t)<a class="code" href="bswap_8h.html#af620b9064c4d86e0c80c63de965678ae">av_bswap32</a>(x) << 32 | <a class="code" href="bswap_8h.html#af620b9064c4d86e0c80c63de965678ae">av_bswap32</a>(x >> 32);
<a name="l00076"></a>00076 }
<a name="l00077"></a>00077 <span class="preprocessor">#endif</span>
<a name="l00078"></a>00078 <span class="preprocessor"></span>
<a name="l00079"></a>00079 <span class="comment">// be2ne ... big-endian to native-endian</span>
<a name="l00080"></a>00080 <span class="comment">// le2ne ... little-endian to native-endian</span>
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="preprocessor">#if AV_HAVE_BIGENDIAN</span>
<a name="l00083"></a>00083 <span class="preprocessor"></span><span class="preprocessor">#define av_be2ne16(x) (x)</span>
<a name="l00084"></a>00084 <span class="preprocessor"></span><span class="preprocessor">#define av_be2ne32(x) (x)</span>
<a name="l00085"></a>00085 <span class="preprocessor"></span><span class="preprocessor">#define av_be2ne64(x) (x)</span>
<a name="l00086"></a>00086 <span class="preprocessor"></span><span class="preprocessor">#define av_le2ne16(x) av_bswap16(x)</span>
<a name="l00087"></a>00087 <span class="preprocessor"></span><span class="preprocessor">#define av_le2ne32(x) av_bswap32(x)</span>
<a name="l00088"></a>00088 <span class="preprocessor"></span><span class="preprocessor">#define av_le2ne64(x) av_bswap64(x)</span>
<a name="l00089"></a>00089 <span class="preprocessor"></span><span class="preprocessor">#define AV_BE2NEC(s, x) (x)</span>
<a name="l00090"></a>00090 <span class="preprocessor"></span><span class="preprocessor">#define AV_LE2NEC(s, x) AV_BSWAPC(s, x)</span>
<a name="l00091"></a>00091 <span class="preprocessor"></span><span class="preprocessor">#else</span>
<a name="l00092"></a><a class="code" href="bswap_8h.html#a02385306e193ec58dc379dfb5d812960">00092</a> <span class="preprocessor"></span><span class="preprocessor">#define av_be2ne16(x) av_bswap16(x)</span>
<a name="l00093"></a><a class="code" href="bswap_8h.html#ac1015f36993fc9b1659fe883d3ff3a17">00093</a> <span class="preprocessor"></span><span class="preprocessor">#define av_be2ne32(x) av_bswap32(x)</span>
<a name="l00094"></a><a class="code" href="bswap_8h.html#a4b21613df6f82952b52f4f0d1fc7b33c">00094</a> <span class="preprocessor"></span><span class="preprocessor">#define av_be2ne64(x) av_bswap64(x)</span>
<a name="l00095"></a><a class="code" href="bswap_8h.html#a7b43061d66dbb292123e683e37cecab8">00095</a> <span class="preprocessor"></span><span class="preprocessor">#define av_le2ne16(x) (x)</span>
<a name="l00096"></a><a class="code" href="bswap_8h.html#a610c453f4731b545a1528ffdddccd349">00096</a> <span class="preprocessor"></span><span class="preprocessor">#define av_le2ne32(x) (x)</span>
<a name="l00097"></a><a class="code" href="bswap_8h.html#a3aa241ad1a5d44df2e550976ffd38dc2">00097</a> <span class="preprocessor"></span><span class="preprocessor">#define av_le2ne64(x) (x)</span>
<a name="l00098"></a><a class="code" href="bswap_8h.html#a462118c252ac8d6acde1676cd711bbda">00098</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_BE2NEC(s, x) AV_BSWAPC(s, x)</span>
<a name="l00099"></a><a class="code" href="bswap_8h.html#a5797b32cfd8cbdadd82c51fdc4c933b8">00099</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_LE2NEC(s, x) (x)</span>
<a name="l00100"></a>00100 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00101"></a>00101 <span class="preprocessor"></span>
<a name="l00102"></a><a class="code" href="bswap_8h.html#ac35c610c96f7e07cf3d983884559eede">00102</a> <span class="preprocessor">#define AV_BE2NE16C(x) AV_BE2NEC(16, x)</span>
<a name="l00103"></a><a class="code" href="bswap_8h.html#abd6a1094eb78b29cb4aba793ffa7ce00">00103</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_BE2NE32C(x) AV_BE2NEC(32, x)</span>
<a name="l00104"></a><a class="code" href="bswap_8h.html#a33520e694e7cb3d62ac95a7120231d4e">00104</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_BE2NE64C(x) AV_BE2NEC(64, x)</span>
<a name="l00105"></a><a class="code" href="bswap_8h.html#ac59ea1c37c5bc191f526b2afa97e2db2">00105</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_LE2NE16C(x) AV_LE2NEC(16, x)</span>
<a name="l00106"></a><a class="code" href="bswap_8h.html#ab508468ff8b273b8ed5c23ef214ee8dc">00106</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_LE2NE32C(x) AV_LE2NEC(32, x)</span>
<a name="l00107"></a><a class="code" href="bswap_8h.html#aac38fbe0d7a17950224f153df82ccda4">00107</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_LE2NE64C(x) AV_LE2NEC(64, x)</span>
<a name="l00108"></a>00108 <span class="preprocessor"></span>
<a name="l00109"></a>00109 <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_BSWAP_H */</span>
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