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 <span id="projectnumber">3.0.2</span>
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<li class="navelem"><a class="el" href="dir_8d855866ba5d436d839c7fc557836cd9.html">libavutil</a></li> </ul>
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<a href="common_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at></span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * This file is part of FFmpeg.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * License as published by the Free Software Foundation; either</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * Lesser General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"></span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * @file</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * common internal and external API header</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#ifndef AVUTIL_COMMON_H</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_COMMON_H</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#if defined(__cplusplus) && !defined(__STDC_CONSTANT_MACROS) && !defined(UINT64_C)</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor"></span><span class="preprocessor">#error missing -D__STDC_CONSTANT_MACROS / #define __STDC_CONSTANT_MACROS</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <errno.h></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <inttypes.h></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <limits.h></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <math.h></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <stdint.h></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#include <stdio.h></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#include <string.h></span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#include "<a class="code" href="attributes_8h.html">attributes.h</a>"</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#include "<a class="code" href="macros_8h.html">macros.h</a>"</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#include "<a class="code" href="libavutil_2version_8h.html">version.h</a>"</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include "libavutil/avconfig.h"</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#if AV_HAVE_BIGENDIAN</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor"></span><span class="preprocessor"># define AV_NE(be, le) (be)</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor"></span><span class="preprocessor">#else</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="common_8h.html#a309bdca20f6a78431379fc69442d98ea"> 50</a></span> <span class="preprocessor"></span><span class="preprocessor"># define AV_NE(be, le) (le)</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment">//rounded division & shift</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="common_8h.html#aa79ca71ef110a498d8275cbf7aa75a93"> 54</a></span> <span class="preprocessor">#define RSHIFT(a,b) ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="preprocessor"></span><span class="comment">/* assume b>0 */</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="common_8h.html#a7a2a86492a286d6d20678da1dbb00525"> 56</a></span> <span class="preprocessor">#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor"></span><span class="comment">/* Fast a/(1<<b) rounded toward +inf. Assume a>=0 and b>=0 */</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="common_8h.html#a5d13452b0fac0d41b08ea2e49ea6eaa5"> 58</a></span> <span class="preprocessor">#define AV_CEIL_RSHIFT(a,b) (!av_builtin_constant_p(b) ? -((-(a)) >> (b)) \</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="preprocessor"> : ((a) + (1<<(b)) - 1) >> (b))</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="preprocessor"></span><span class="comment">/* Backwards compat. */</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="common_8h.html#a33703f1a958afda17362487ed065ee0c"> 61</a></span> <span class="preprocessor">#define FF_CEIL_RSHIFT AV_CEIL_RSHIFT</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="common_8h.html#a5117194af5289224bceaaa5466586d8f"> 63</a></span> <span class="preprocessor">#define FFUDIV(a,b) (((a)>0 ?(a):(a)-(b)+1) / (b))</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="common_8h.html#aa0241c1e04e45d7be1b388d83ab57f22"> 64</a></span> <span class="preprocessor"></span><span class="preprocessor">#define FFUMOD(a,b) ((a)-(b)*FFUDIV(a,b))</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> * Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> * are not representable as absolute values of their type. This is the same</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * as with *abs()</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> * @see FFNABS()</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="common_8h.html#ad6d88940cfc29c13a3e51ded211fc242"> 72</a></span> <span class="preprocessor">#define FFABS(a) ((a) >= 0 ? (a) : (-(a)))</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="common_8h.html#af5e4ff7761996bc901e59bd59756268d"> 73</a></span> <span class="preprocessor"></span><span class="preprocessor">#define FFSIGN(a) ((a) > 0 ? 1 : -1)</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> * Negative Absolute value.</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> * this works for all integers of all types.</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> * As with many macros, this evaluates its argument twice, it thus must not have</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> * a sideeffect, that is FFNABS(x++) has undefined behavior.</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="common_8h.html#a4752e34ce9cae031c792b625b0736d97"> 81</a></span> <span class="preprocessor">#define FFNABS(a) ((a) <= 0 ? (a) : (-(a)))</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * Comparator.</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> * For two numerical expressions x and y, gives 1 if x > y, -1 if x < y, and 0</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> * if x == y. This is useful for instance in a qsort comparator callback.</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> * Furthermore, compilers are able to optimize this to branchless code, and</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> * there is no risk of overflow with signed types.</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> * As with many macros, this evaluates its argument multiple times, it thus</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * must not have a side-effect.</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="common_8h.html#add8913a6f8e5714b6174eeaad5751006"> 92</a></span> <span class="preprocessor">#define FFDIFFSIGN(x,y) (((x)>(y)) - ((x)<(y)))</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="common_8h.html#a9960bd6780a9b16a216a57be1ee04359"> 94</a></span> <span class="preprocessor">#define FFMAX(a,b) ((a) > (b) ? (a) : (b))</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"><a class="line" href="common_8h.html#a013fdaa079045ec5632fe121e211e516"> 95</a></span> <span class="preprocessor"></span><span class="preprocessor">#define FFMAX3(a,b,c) FFMAX(FFMAX(a,b),c)</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="common_8h.html#a0f84cbd7fd810cd678157c98cbfad4b0"> 96</a></span> <span class="preprocessor"></span><span class="preprocessor">#define FFMIN(a,b) ((a) > (b) ? (b) : (a))</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="common_8h.html#af6afbffa12562b076c34055bdcb3ad65"> 97</a></span> <span class="preprocessor"></span><span class="preprocessor">#define FFMIN3(a,b,c) FFMIN(FFMIN(a,b),c)</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="common_8h.html#a09a0bb7d8fcfac416de7a5fe7fd8b0f1"> 99</a></span> <span class="preprocessor">#define FFSWAP(type,a,b) do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="common_8h.html#a3508a98d3ee7e2c9a4841fe264cf70f7"> 100</a></span> <span class="preprocessor"></span><span class="preprocessor">#define FF_ARRAY_ELEMS(a) (sizeof(a) / sizeof((a)[0]))</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment">/* misc math functions */</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#ifdef HAVE_AV_CONFIG_H</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor"></span><span class="preprocessor"># include "config.h"</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor"># include "intmath.h"</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment">/* Pull in unguarded fallback defines at the end of this file. */</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="preprocessor">#include "<a class="code" href="common_8h.html">common.h</a>"</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#ifndef av_log2</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="preprocessor"></span><a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#a10e72d08c6a66c91cf7218532631684e">av_log2</a>(<span class="keywordtype">unsigned</span> v);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor">#ifndef av_log2_16bit</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="preprocessor"></span><a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#a8a1d3f387b1eab65327453f6a8e7e9ae">av_log2_16bit</a>(<span class="keywordtype">unsigned</span> v);</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> * Clip a signed integer value into the amin-amax range.</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> * @param amin minimum value of the clip range</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * @param amax maximum value of the clip range</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="common_8h.html#a465f39d69c5a5fe0e070b6ec4d0fed29"> 127</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#a465f39d69c5a5fe0e070b6ec4d0fed29">av_clip_c</a>(<span class="keywordtype">int</span> a, <span class="keywordtype">int</span> amin, <span class="keywordtype">int</span> amax)</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> {</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="preprocessor">#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (amin > amax) abort();</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (a < amin) <span class="keywordflow">return</span> amin;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (a > amax) <span class="keywordflow">return</span> amax;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> }</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"></span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> * Clip a signed 64bit integer value into the amin-amax range.</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> * @param amin minimum value of the clip range</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> * @param amax maximum value of the clip range</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"><a class="line" href="common_8h.html#aa4ed7e144d5b8397cff8656e9c786cb2"> 144</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int64_t <a class="code" href="common_8h.html#aa4ed7e144d5b8397cff8656e9c786cb2">av_clip64_c</a>(int64_t a, int64_t amin, int64_t amax)</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="preprocessor">#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (amin > amax) abort();</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (a < amin) <span class="keywordflow">return</span> amin;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (a > amax) <span class="keywordflow">return</span> amax;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> }</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="comment"></span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="comment"> * Clip a signed integer value into the 0-255 range.</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"><a class="line" href="common_8h.html#a8deed4a1ec39d0b1ab82d1f0e590a6f5"> 159</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> uint8_t <a class="code" href="common_8h.html#a8deed4a1ec39d0b1ab82d1f0e590a6f5">av_clip_uint8_c</a>(<span class="keywordtype">int</span> a)</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> {</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> (a&(~0xFF)) <span class="keywordflow">return</span> (-a)>>31;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> }</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"></span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> * Clip a signed integer value into the -128,127 range.</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"><a class="line" href="common_8h.html#a3091e5b3f2a340c3ddb29f6733fb2a4c"> 170</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int8_t <a class="code" href="common_8h.html#a3091e5b3f2a340c3ddb29f6733fb2a4c">av_clip_int8_c</a>(<span class="keywordtype">int</span> a)</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> {</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">if</span> ((a+0x80U) & ~0xFF) <span class="keywordflow">return</span> (a>>31) ^ 0x7F;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> }</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"></span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="comment"> * Clip a signed integer value into the 0-65535 range.</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"><a class="line" href="common_8h.html#a70a9a6b77373c47c48ef93511edaf9ce"> 181</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> uint16_t <a class="code" href="common_8h.html#a70a9a6b77373c47c48ef93511edaf9ce">av_clip_uint16_c</a>(<span class="keywordtype">int</span> a)</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> {</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">if</span> (a&(~0xFFFF)) <span class="keywordflow">return</span> (-a)>>31;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> }</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="comment"></span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment"> * Clip a signed integer value into the -32768,32767 range.</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"><a class="line" href="common_8h.html#aae95fa7073f1caa097951161985240f7"> 192</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int16_t <a class="code" href="common_8h.html#aae95fa7073f1caa097951161985240f7">av_clip_int16_c</a>(<span class="keywordtype">int</span> a)</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> ((a+0x8000U) & ~0xFFFF) <span class="keywordflow">return</span> (a>>31) ^ 0x7FFF;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> }</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"></span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment"> * Clip a signed 64-bit integer value into the -2147483648,2147483647 range.</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"><a class="line" href="common_8h.html#ae245fb123a6e2a664c4806c034421e1e"> 203</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int32_t <a class="code" href="common_8h.html#ae245fb123a6e2a664c4806c034421e1e">av_clipl_int32_c</a>(int64_t a)</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> {</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">if</span> ((a+0x80000000u) & ~UINT64_C(0xFFFFFFFF)) <span class="keywordflow">return</span> (int32_t)((a>>63) ^ 0x7FFFFFFF);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> (int32_t)a;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> }</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="comment"></span></div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="comment"> * Clip a signed integer into the -(2^p),(2^p-1) range.</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment"> * @param p bit position to clip at</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="common_8h.html#ad24148f23ca385e16b14885f52360abe"> 215</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#ad24148f23ca385e16b14885f52360abe">av_clip_intp2_c</a>(<span class="keywordtype">int</span> a, <span class="keywordtype">int</span> p)</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> {</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">if</span> (((<span class="keywordtype">unsigned</span>)a + (1 << p)) & ~((2 << p) - 1))</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">return</span> (a >> 31) ^ ((1 << p) - 1);</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> }</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span> <span class="comment"></span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="comment"> * Clip a signed integer to an unsigned power of two range.</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="comment"> * @param p bit position to clip at</span></div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"><a class="line" href="common_8h.html#a867dba37c785d27d42b272aa968efda8"> 229</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">unsigned</span> <a class="code" href="common_8h.html#a867dba37c785d27d42b272aa968efda8">av_clip_uintp2_c</a>(<span class="keywordtype">int</span> a, <span class="keywordtype">int</span> p)</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> {</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">if</span> (a & ~((1<<p) - 1)) <span class="keywordflow">return</span> -a >> 31 & ((1<<p) - 1);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="comment"></span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="comment"> * Clear high bits from an unsigned integer starting with specific bit position</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment"> * @param p bit position to clip at</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"><a class="line" href="common_8h.html#a3cb38786757c8f2a468560d9d7a6c59c"> 241</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">unsigned</span> <a class="code" href="common_8h.html#a3cb38786757c8f2a468560d9d7a6c59c">av_mod_uintp2_c</a>(<span class="keywordtype">unsigned</span> a, <span class="keywordtype">unsigned</span> p)</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> {</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keywordflow">return</span> a & ((1 << p) - 1);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> }</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment"></span></div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment"> * Add two signed 32-bit values with saturation.</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <span class="comment"> * @param a one value</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> <span class="comment"> * @param b another value</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> <span class="comment"> * @return sum with signed saturation</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"><a class="line" href="common_8h.html#a2ff75b1bf7fd1a261dd2f2919e8d23e1"> 253</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#a2ff75b1bf7fd1a261dd2f2919e8d23e1">av_sat_add32_c</a>(<span class="keywordtype">int</span> a, <span class="keywordtype">int</span> b)</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> {</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">return</span> av_clipl_int32((int64_t)a + b);</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> }</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment"></span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment"> * Add a doubled value to another value with saturation at both stages.</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> * @param a first value</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"> * @param b value doubled and added to a</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment"> * @return sum with signed saturation</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"><a class="line" href="common_8h.html#af235b48678850832493ac21160ff8458"> 265</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#af235b48678850832493ac21160ff8458">av_sat_dadd32_c</a>(<span class="keywordtype">int</span> a, <span class="keywordtype">int</span> b)</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> {</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordflow">return</span> av_sat_add32(a, av_sat_add32(b, b));</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> }</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="comment"></span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="comment"> * Clip a float value into the amin-amax range.</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="comment"> * @param amin minimum value of the clip range</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="comment"> * @param amax maximum value of the clip range</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00277"></a><span class="lineno"><a class="line" href="common_8h.html#a7d5a6331d8708d4516aeab2413f86392"> 277</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">float</span> <a class="code" href="common_8h.html#a7d5a6331d8708d4516aeab2413f86392">av_clipf_c</a>(<span class="keywordtype">float</span> a, <span class="keywordtype">float</span> amin, <span class="keywordtype">float</span> amax)</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> {</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="preprocessor">#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (amin > amax) abort();</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (a < amin) <span class="keywordflow">return</span> amin;</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (a > amax) <span class="keywordflow">return</span> amax;</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> }</div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment"></span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment"> * Clip a double value into the amin-amax range.</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment"> * @param a value to clip</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment"> * @param amin minimum value of the clip range</span></div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="comment"> * @param amax maximum value of the clip range</span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="comment"> * @return clipped value</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"><a class="line" href="common_8h.html#a9a257b0d07c767325ee48b5e16e0b97f"> 294</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">double</span> <a class="code" href="common_8h.html#a9a257b0d07c767325ee48b5e16e0b97f">av_clipd_c</a>(<span class="keywordtype">double</span> a, <span class="keywordtype">double</span> amin, <span class="keywordtype">double</span> amax)</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> {</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="preprocessor">#if defined(HAVE_AV_CONFIG_H) && defined(ASSERT_LEVEL) && ASSERT_LEVEL >= 2</span></div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (amin > amax) abort();</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (a < amin) <span class="keywordflow">return</span> amin;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (a > amax) <span class="keywordflow">return</span> amax;</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">else</span> <span class="keywordflow">return</span> a;</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> }</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment"></span></div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="comment">/** Compute ceil(log2(x)).</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span> <span class="comment"> * @param x value used to compute ceil(log2(x))</span></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="comment"> * @return computed ceiling of log2(x)</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href="common_8h.html#ad94b463be296690fc9c096d55203b42b"> 308</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#ad94b463be296690fc9c096d55203b42b">av_ceil_log2_c</a>(<span class="keywordtype">int</span> x)</div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> {</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">return</span> <a class="code" href="common_8h.html#a10e72d08c6a66c91cf7218532631684e">av_log2</a>((x - 1) << 1);</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> }</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span> <span class="comment"></span></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="comment"> * Count number of bits set to one in x</span></div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="comment"> * @param x value to count bits of</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span> <span class="comment"> * @return the number of bits set to one in x</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"><a class="line" href="common_8h.html#a73ced2c040c8e53f58a6073c3f3927b5"> 318</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#a73ced2c040c8e53f58a6073c3f3927b5">av_popcount_c</a>(uint32_t x)</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  x -= (x >> 1) & 0x55555555;</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  x = (x & 0x33333333) + ((x >> 2) & 0x33333333);</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  x = (x + (x >> 4)) & 0x0F0F0F0F;</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  x += x >> 8;</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">return</span> (x + (x >> 16)) & 0x3F;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> }</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> <span class="comment"></span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span> <span class="comment"> * Count number of bits set to one in x</span></div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="comment"> * @param x value to count bits of</span></div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> <span class="comment"> * @return the number of bits set to one in x</span></div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"><a class="line" href="common_8h.html#a1016d46d60ca2d27d8ab2af5f0f7c57a"> 332</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#a1016d46d60ca2d27d8ab2af5f0f7c57a">av_popcount64_c</a>(uint64_t x)</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> {</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">return</span> av_popcount((uint32_t)x) + av_popcount((uint32_t)(x >> 32));</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> }</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> </div>
<div class="line"><a name="l00337"></a><span class="lineno"><a class="line" href="common_8h.html#aed51dfa317ec3988d6bb7734f19d5cba"> 337</a></span> <span class="keyword">static</span> <a class="code" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="common_8h.html#aed51dfa317ec3988d6bb7734f19d5cba">av_parity_c</a>(uint32_t v)</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> {</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keywordflow">return</span> av_popcount(v) & 1;</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> }</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> </div>
<div class="line"><a name="l00342"></a><span class="lineno"><a class="line" href="common_8h.html#a19c68e2b5efcbab914d79db1e4fee734"> 342</a></span> <span class="preprocessor">#define MKTAG(a,b,c,d) ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))</span></div>
<div class="line"><a name="l00343"></a><span class="lineno"><a class="line" href="common_8h.html#a1e233db224cd0a3079fd4572d1a3d717"> 343</a></span> <span class="preprocessor"></span><span class="preprocessor">#define MKBETAG(a,b,c,d) ((d) | ((c) << 8) | ((b) << 16) | ((unsigned)(a) << 24))</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="comment"> * Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> <span class="comment"> * @param val Output value, must be an lvalue of type uint32_t.</span></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> <span class="comment"> * @param GET_BYTE Expression reading one byte from the input.</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="comment"> * Evaluated up to 7 times (4 for the currently</span></div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="comment"> * assigned Unicode range). With a memory buffer</span></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span> <span class="comment"> * input, this could be *ptr++.</span></div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span> <span class="comment"> * @param ERROR Expression to be evaluated on invalid input,</span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="comment"> * typically a goto statement.</span></div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="comment"> * @warning ERROR should not contain a loop control statement which</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="comment"> * could interact with the internal while loop, and should force an</span></div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="comment"> * exit from the macro code (e.g. through a goto or a return) in order</span></div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="comment"> * to prevent undefined results.</span></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00361"></a><span class="lineno"><a class="line" href="common_8h.html#a1a2fd8cd42afb00c9f69562f52b1ae4b"> 361</a></span> <span class="preprocessor">#define GET_UTF8(val, GET_BYTE, ERROR)\</span></div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span> <span class="preprocessor"> val= (GET_BYTE);\</span></div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="preprocessor"> {\</span></div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> <span class="preprocessor"> uint32_t top = (val & 128) >> 1;\</span></div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> <span class="preprocessor"> if ((val & 0xc0) == 0x80 || val >= 0xFE)\</span></div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="preprocessor"> ERROR\</span></div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="preprocessor"> while (val & top) {\</span></div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span> <span class="preprocessor"> int tmp= (GET_BYTE) - 128;\</span></div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span> <span class="preprocessor"> if(tmp>>6)\</span></div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span> <span class="preprocessor"> ERROR\</span></div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="preprocessor"> val= (val<<6) + tmp;\</span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="preprocessor"> top <<= 5;\</span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="preprocessor"> }\</span></div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span> <span class="preprocessor"> val &= (top << 1) - 1;\</span></div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> <span class="preprocessor"> }</span></div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span> <span class="comment"> * Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form.</span></div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> <span class="comment"> * @param val Output value, must be an lvalue of type uint32_t.</span></div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span> <span class="comment"> * @param GET_16BIT Expression returning two bytes of UTF-16 data converted</span></div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span> <span class="comment"> * to native byte order. Evaluated one or two times.</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span> <span class="comment"> * @param ERROR Expression to be evaluated on invalid input,</span></div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> <span class="comment"> * typically a goto statement.</span></div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"><a class="line" href="common_8h.html#a2665137b6cc64bb5cf491ba9f9dbd215"> 386</a></span> <span class="preprocessor">#define GET_UTF16(val, GET_16BIT, ERROR)\</span></div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span> <span class="preprocessor"> val = GET_16BIT;\</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> <span class="preprocessor"> {\</span></div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="preprocessor"> unsigned int hi = val - 0xD800;\</span></div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="preprocessor"> if (hi < 0x800) {\</span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> <span class="preprocessor"> val = GET_16BIT - 0xDC00;\</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="preprocessor"> if (val > 0x3FFU || hi > 0x3FFU)\</span></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span> <span class="preprocessor"> ERROR\</span></div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span> <span class="preprocessor"> val += (hi<<10) + 0x10000;\</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span> <span class="preprocessor"> }\</span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="preprocessor"> }\</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="preprocessor"></span><span class="comment">/**</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="comment"> * @def PUT_UTF8(val, tmp, PUT_BYTE)</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="comment"> * Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long).</span></div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> <span class="comment"> * @param val is an input-only argument and should be of type uint32_t. It holds</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> <span class="comment"> * a UCS-4 encoded Unicode character that is to be converted to UTF-8. If</span></div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> <span class="comment"> * val is given as a function it is executed only once.</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="comment"> * @param tmp is a temporary variable and should be of type uint8_t. It</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> <span class="comment"> * represents an intermediate value during conversion that is to be</span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> <span class="comment"> * output by PUT_BYTE.</span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="comment"> * @param PUT_BYTE writes the converted UTF-8 bytes to any proper destination.</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> <span class="comment"> * It could be a function or a statement, and uses tmp as the input byte.</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span> <span class="comment"> * For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be</span></div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="comment"> * executed up to 4 times for values in the valid UTF-8 range and up to</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> <span class="comment"> * 7 times in the general case, depending on the length of the converted</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="comment"> * Unicode character.</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"><a class="line" href="common_8h.html#ac6a994fe28410a8d14f70f0992db4f42"> 414</a></span> <span class="preprocessor">#define PUT_UTF8(val, tmp, PUT_BYTE)\</span></div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> <span class="preprocessor"> {\</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="preprocessor"> int bytes, shift;\</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="preprocessor"> uint32_t in = val;\</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="preprocessor"> if (in < 0x80) {\</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="preprocessor"> tmp = in;\</span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="preprocessor"> PUT_BYTE\</span></div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="preprocessor"> } else {\</span></div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="preprocessor"> bytes = (av_log2(in) + 4) / 5;\</span></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> <span class="preprocessor"> shift = (bytes - 1) * 6;\</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span> <span class="preprocessor"> tmp = (256 - (256 >> bytes)) | (in >> shift);\</span></div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span> <span class="preprocessor"> PUT_BYTE\</span></div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="preprocessor"> while (shift >= 6) {\</span></div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="preprocessor"> shift -= 6;\</span></div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span> <span class="preprocessor"> tmp = 0x80 | ((in >> shift) & 0x3f);\</span></div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> <span class="preprocessor"> PUT_BYTE\</span></div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span> <span class="preprocessor"> }\</span></div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="preprocessor"> }\</span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="preprocessor"> }</span></div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span> <span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="comment">/**</span></div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="comment"> * @def PUT_UTF16(val, tmp, PUT_16BIT)</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="comment"> * Convert a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes).</span></div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="comment"> * @param val is an input-only argument and should be of type uint32_t. It holds</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> <span class="comment"> * a UCS-4 encoded Unicode character that is to be converted to UTF-16. If</span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="comment"> * val is given as a function it is executed only once.</span></div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span> <span class="comment"> * @param tmp is a temporary variable and should be of type uint16_t. It</span></div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="comment"> * represents an intermediate value during conversion that is to be</span></div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="comment"> * output by PUT_16BIT.</span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> <span class="comment"> * @param PUT_16BIT writes the converted UTF-16 data to any proper destination</span></div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> <span class="comment"> * in desired endianness. It could be a function or a statement, and uses tmp</span></div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> <span class="comment"> * as the input byte. For example, PUT_BYTE could be "*output++ = tmp;"</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="comment"> * PUT_BYTE will be executed 1 or 2 times depending on input character.</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00448"></a><span class="lineno"><a class="line" href="common_8h.html#a6486c4a216b16b4d2615c23d8429cd6b"> 448</a></span> <span class="preprocessor">#define PUT_UTF16(val, tmp, PUT_16BIT)\</span></div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span> <span class="preprocessor"> {\</span></div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span> <span class="preprocessor"> uint32_t in = val;\</span></div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span> <span class="preprocessor"> if (in < 0x10000) {\</span></div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> <span class="preprocessor"> tmp = in;\</span></div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span> <span class="preprocessor"> PUT_16BIT\</span></div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span> <span class="preprocessor"> } else {\</span></div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span> <span class="preprocessor"> tmp = 0xD800 | ((in - 0x10000) >> 10);\</span></div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="preprocessor"> PUT_16BIT\</span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="preprocessor"> tmp = 0xDC00 | ((in - 0x10000) & 0x3FF);\</span></div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="preprocessor"> PUT_16BIT\</span></div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> <span class="preprocessor"> }\</span></div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span> <span class="preprocessor"> }\</span></div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span> </div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> <span class="preprocessor">#include "<a class="code" href="mem_8h.html">mem.h</a>"</span></div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span> </div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> <span class="preprocessor">#ifdef HAVE_AV_CONFIG_H</span></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span> <span class="preprocessor"></span><span class="preprocessor"># include "internal.h"</span></div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span> <span class="preprocessor">#endif </span><span class="comment">/* HAVE_AV_CONFIG_H */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_COMMON_H */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span> <span class="comment"> * The following definitions are outside the multiple inclusion guard</span></div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span> <span class="comment"> * to ensure they are immediately available in intmath.h.</span></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span> </div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span> <span class="preprocessor">#ifndef av_ceil_log2</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> <span class="preprocessor"></span><span class="preprocessor"># define av_ceil_log2 av_ceil_log2_c</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clip</span></div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clip av_clip_c</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clip64</span></div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clip64 av_clip64_c</span></div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clip_uint8</span></div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clip_uint8 av_clip_uint8_c</span></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clip_int8</span></div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clip_int8 av_clip_int8_c</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clip_uint16</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clip_uint16 av_clip_uint16_c</span></div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clip_int16</span></div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clip_int16 av_clip_int16_c</span></div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clipl_int32</span></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clipl_int32 av_clipl_int32_c</span></div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clip_intp2</span></div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clip_intp2 av_clip_intp2_c</span></div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clip_uintp2</span></div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clip_uintp2 av_clip_uintp2_c</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_mod_uintp2</span></div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span> <span class="preprocessor"></span><span class="preprocessor"># define av_mod_uintp2 av_mod_uintp2_c</span></div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_sat_add32</span></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="preprocessor"></span><span class="preprocessor"># define av_sat_add32 av_sat_add32_c</span></div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_sat_dadd32</span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span> <span class="preprocessor"></span><span class="preprocessor"># define av_sat_dadd32 av_sat_dadd32_c</span></div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clipf</span></div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clipf av_clipf_c</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_clipd</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span> <span class="preprocessor"></span><span class="preprocessor"># define av_clipd av_clipd_c</span></div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_popcount</span></div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span> <span class="preprocessor"></span><span class="preprocessor"># define av_popcount av_popcount_c</span></div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_popcount64</span></div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span> <span class="preprocessor"></span><span class="preprocessor"># define av_popcount64 av_popcount64_c</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> <span class="preprocessor"></span><span class="preprocessor">#ifndef av_parity</span></div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> <span class="preprocessor"></span><span class="preprocessor"># define av_parity av_parity_c</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="attributes_8h_html_a9eaead3cde73464fd66bab4cef9307ad"><div class="ttname"><a href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a></div><div class="ttdeci">#define av_const</div><div class="ttdef"><b>Definition:</b> <a href="attributes_8h_source.html#l00076">attributes.h:76</a></div></div>
<div class="ttc" id="common_8h_html_ae245fb123a6e2a664c4806c034421e1e"><div class="ttname"><a href="common_8h.html#ae245fb123a6e2a664c4806c034421e1e">av_clipl_int32_c</a></div><div class="ttdeci">static av_always_inline av_const int32_t av_clipl_int32_c(int64_t a)</div><div class="ttdoc">Clip a signed 64-bit integer value into the -2147483648,2147483647 range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00203">common.h:203</a></div></div>
<div class="ttc" id="common_8h_html_a7d5a6331d8708d4516aeab2413f86392"><div class="ttname"><a href="common_8h.html#a7d5a6331d8708d4516aeab2413f86392">av_clipf_c</a></div><div class="ttdeci">static av_always_inline av_const float av_clipf_c(float a, float amin, float amax)</div><div class="ttdoc">Clip a float value into the amin-amax range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00277">common.h:277</a></div></div>
<div class="ttc" id="common_8h_html_a3cb38786757c8f2a468560d9d7a6c59c"><div class="ttname"><a href="common_8h.html#a3cb38786757c8f2a468560d9d7a6c59c">av_mod_uintp2_c</a></div><div class="ttdeci">static av_always_inline av_const unsigned av_mod_uintp2_c(unsigned a, unsigned p)</div><div class="ttdoc">Clear high bits from an unsigned integer starting with specific bit position. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00241">common.h:241</a></div></div>
<div class="ttc" id="mem_8h_html"><div class="ttname"><a href="mem_8h.html">mem.h</a></div><div class="ttdoc">memory handling functions </div></div>
<div class="ttc" id="common_8h_html_a3091e5b3f2a340c3ddb29f6733fb2a4c"><div class="ttname"><a href="common_8h.html#a3091e5b3f2a340c3ddb29f6733fb2a4c">av_clip_int8_c</a></div><div class="ttdeci">static av_always_inline av_const int8_t av_clip_int8_c(int a)</div><div class="ttdoc">Clip a signed integer value into the -128,127 range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00170">common.h:170</a></div></div>
<div class="ttc" id="common_8h_html_a8a1d3f387b1eab65327453f6a8e7e9ae"><div class="ttname"><a href="common_8h.html#a8a1d3f387b1eab65327453f6a8e7e9ae">av_log2_16bit</a></div><div class="ttdeci">av_const int av_log2_16bit(unsigned v)</div></div>
<div class="ttc" id="attributes_8h_html"><div class="ttname"><a href="attributes_8h.html">attributes.h</a></div><div class="ttdoc">Macro definitions for various function/variable attributes. </div></div>
<div class="ttc" id="macros_8h_html"><div class="ttname"><a href="macros_8h.html">macros.h</a></div><div class="ttdoc">Utility Preprocessor macros. </div></div>
<div class="ttc" id="common_8h_html_a465f39d69c5a5fe0e070b6ec4d0fed29"><div class="ttname"><a href="common_8h.html#a465f39d69c5a5fe0e070b6ec4d0fed29">av_clip_c</a></div><div class="ttdeci">static av_always_inline av_const int av_clip_c(int a, int amin, int amax)</div><div class="ttdoc">Clip a signed integer value into the amin-amax range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00127">common.h:127</a></div></div>
<div class="ttc" id="libavutil_2version_8h_html"><div class="ttname"><a href="libavutil_2version_8h.html">version.h</a></div><div class="ttdoc">Libavutil version macros. </div></div>
<div class="ttc" id="common_8h_html_a70a9a6b77373c47c48ef93511edaf9ce"><div class="ttname"><a href="common_8h.html#a70a9a6b77373c47c48ef93511edaf9ce">av_clip_uint16_c</a></div><div class="ttdeci">static av_always_inline av_const uint16_t av_clip_uint16_c(int a)</div><div class="ttdoc">Clip a signed integer value into the 0-65535 range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00181">common.h:181</a></div></div>
<div class="ttc" id="common_8h_html_a8deed4a1ec39d0b1ab82d1f0e590a6f5"><div class="ttname"><a href="common_8h.html#a8deed4a1ec39d0b1ab82d1f0e590a6f5">av_clip_uint8_c</a></div><div class="ttdeci">static av_always_inline av_const uint8_t av_clip_uint8_c(int a)</div><div class="ttdoc">Clip a signed integer value into the 0-255 range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00159">common.h:159</a></div></div>
<div class="ttc" id="common_8h_html_a9a257b0d07c767325ee48b5e16e0b97f"><div class="ttname"><a href="common_8h.html#a9a257b0d07c767325ee48b5e16e0b97f">av_clipd_c</a></div><div class="ttdeci">static av_always_inline av_const double av_clipd_c(double a, double amin, double amax)</div><div class="ttdoc">Clip a double value into the amin-amax range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00294">common.h:294</a></div></div>
<div class="ttc" id="common_8h_html_ad24148f23ca385e16b14885f52360abe"><div class="ttname"><a href="common_8h.html#ad24148f23ca385e16b14885f52360abe">av_clip_intp2_c</a></div><div class="ttdeci">static av_always_inline av_const int av_clip_intp2_c(int a, int p)</div><div class="ttdoc">Clip a signed integer into the -(2^p),(2^p-1) range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00215">common.h:215</a></div></div>
<div class="ttc" id="common_8h_html_a10e72d08c6a66c91cf7218532631684e"><div class="ttname"><a href="common_8h.html#a10e72d08c6a66c91cf7218532631684e">av_log2</a></div><div class="ttdeci">av_const int av_log2(unsigned v)</div></div>
<div class="ttc" id="common_8h_html_aae95fa7073f1caa097951161985240f7"><div class="ttname"><a href="common_8h.html#aae95fa7073f1caa097951161985240f7">av_clip_int16_c</a></div><div class="ttdeci">static av_always_inline av_const int16_t av_clip_int16_c(int a)</div><div class="ttdoc">Clip a signed integer value into the -32768,32767 range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00192">common.h:192</a></div></div>
<div class="ttc" id="common_8h_html"><div class="ttname"><a href="common_8h.html">common.h</a></div><div class="ttdoc">common internal and external API header </div></div>
<div class="ttc" id="common_8h_html_a73ced2c040c8e53f58a6073c3f3927b5"><div class="ttname"><a href="common_8h.html#a73ced2c040c8e53f58a6073c3f3927b5">av_popcount_c</a></div><div class="ttdeci">static av_always_inline av_const int av_popcount_c(uint32_t x)</div><div class="ttdoc">Count number of bits set to one in x. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00318">common.h:318</a></div></div>
<div class="ttc" id="common_8h_html_a2ff75b1bf7fd1a261dd2f2919e8d23e1"><div class="ttname"><a href="common_8h.html#a2ff75b1bf7fd1a261dd2f2919e8d23e1">av_sat_add32_c</a></div><div class="ttdeci">static av_always_inline int av_sat_add32_c(int a, int b)</div><div class="ttdoc">Add two signed 32-bit values with saturation. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00253">common.h:253</a></div></div>
<div class="ttc" id="common_8h_html_a1016d46d60ca2d27d8ab2af5f0f7c57a"><div class="ttname"><a href="common_8h.html#a1016d46d60ca2d27d8ab2af5f0f7c57a">av_popcount64_c</a></div><div class="ttdeci">static av_always_inline av_const int av_popcount64_c(uint64_t x)</div><div class="ttdoc">Count number of bits set to one in x. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00332">common.h:332</a></div></div>
<div class="ttc" id="common_8h_html_aed51dfa317ec3988d6bb7734f19d5cba"><div class="ttname"><a href="common_8h.html#aed51dfa317ec3988d6bb7734f19d5cba">av_parity_c</a></div><div class="ttdeci">static av_always_inline av_const int av_parity_c(uint32_t v)</div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00337">common.h:337</a></div></div>
<div class="ttc" id="common_8h_html_af235b48678850832493ac21160ff8458"><div class="ttname"><a href="common_8h.html#af235b48678850832493ac21160ff8458">av_sat_dadd32_c</a></div><div class="ttdeci">static av_always_inline int av_sat_dadd32_c(int a, int b)</div><div class="ttdoc">Add a doubled value to another value with saturation at both stages. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00265">common.h:265</a></div></div>
<div class="ttc" id="attributes_8h_html_a28f50f4c125959216885f01d56dbe866"><div class="ttname"><a href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a></div><div class="ttdeci">#define av_always_inline</div><div class="ttdef"><b>Definition:</b> <a href="attributes_8h_source.html#l00039">attributes.h:39</a></div></div>
<div class="ttc" id="common_8h_html_ad94b463be296690fc9c096d55203b42b"><div class="ttname"><a href="common_8h.html#ad94b463be296690fc9c096d55203b42b">av_ceil_log2_c</a></div><div class="ttdeci">static av_always_inline av_const int av_ceil_log2_c(int x)</div><div class="ttdoc">Compute ceil(log2(x)). </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00308">common.h:308</a></div></div>
<div class="ttc" id="common_8h_html_aa4ed7e144d5b8397cff8656e9c786cb2"><div class="ttname"><a href="common_8h.html#aa4ed7e144d5b8397cff8656e9c786cb2">av_clip64_c</a></div><div class="ttdeci">static av_always_inline av_const int64_t av_clip64_c(int64_t a, int64_t amin, int64_t amax)</div><div class="ttdoc">Clip a signed 64bit integer value into the amin-amax range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00144">common.h:144</a></div></div>
<div class="ttc" id="common_8h_html_a867dba37c785d27d42b272aa968efda8"><div class="ttname"><a href="common_8h.html#a867dba37c785d27d42b272aa968efda8">av_clip_uintp2_c</a></div><div class="ttdeci">static av_always_inline av_const unsigned av_clip_uintp2_c(int a, int p)</div><div class="ttdoc">Clip a signed integer to an unsigned power of two range. </div><div class="ttdef"><b>Definition:</b> <a href="common_8h_source.html#l00229">common.h:229</a></div></div>
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