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 <span id="projectnumber">3.0.2</span>
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<p>common internal and external API header
<a href="#details">More...</a></p>
<div class="textblock"><code>#include <errno.h></code><br/>
<code>#include <inttypes.h></code><br/>
<code>#include <limits.h></code><br/>
<code>#include <math.h></code><br/>
<code>#include <stdint.h></code><br/>
<code>#include <stdio.h></code><br/>
<code>#include <stdlib.h></code><br/>
<code>#include <string.h></code><br/>
<code>#include "<a class="el" href="attributes_8h_source.html">attributes.h</a>"</code><br/>
<code>#include "<a class="el" href="macros_8h_source.html">macros.h</a>"</code><br/>
<code>#include "<a class="el" href="libavutil_2version_8h_source.html">version.h</a>"</code><br/>
<code>#include "libavutil/avconfig.h"</code><br/>
<code>#include "<a class="el" href="common_8h_source.html">common.h</a>"</code><br/>
<code>#include "<a class="el" href="mem_8h_source.html">mem.h</a>"</code><br/>
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<p><a href="common_8h_source.html">Go to the source code of this file.</a></p>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:a309bdca20f6a78431379fc69442d98ea"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a309bdca20f6a78431379fc69442d98ea">AV_NE</a>(be, le)   (le)</td></tr>
<tr class="separator:a309bdca20f6a78431379fc69442d98ea"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa79ca71ef110a498d8275cbf7aa75a93"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#aa79ca71ef110a498d8275cbf7aa75a93">RSHIFT</a>(a, b)   ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))</td></tr>
<tr class="separator:aa79ca71ef110a498d8275cbf7aa75a93"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7a2a86492a286d6d20678da1dbb00525"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a7a2a86492a286d6d20678da1dbb00525">ROUNDED_DIV</a>(a, b)   (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))</td></tr>
<tr class="separator:a7a2a86492a286d6d20678da1dbb00525"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5d13452b0fac0d41b08ea2e49ea6eaa5"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a5d13452b0fac0d41b08ea2e49ea6eaa5">AV_CEIL_RSHIFT</a>(a, b)</td></tr>
<tr class="separator:a5d13452b0fac0d41b08ea2e49ea6eaa5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a33703f1a958afda17362487ed065ee0c"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a33703f1a958afda17362487ed065ee0c">FF_CEIL_RSHIFT</a>   <a class="el" href="common_8h.html#a5d13452b0fac0d41b08ea2e49ea6eaa5">AV_CEIL_RSHIFT</a></td></tr>
<tr class="separator:a33703f1a958afda17362487ed065ee0c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5117194af5289224bceaaa5466586d8f"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a5117194af5289224bceaaa5466586d8f">FFUDIV</a>(a, b)   (((a)>0 ?(a):(a)-(b)+1) / (b))</td></tr>
<tr class="separator:a5117194af5289224bceaaa5466586d8f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa0241c1e04e45d7be1b388d83ab57f22"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#aa0241c1e04e45d7be1b388d83ab57f22">FFUMOD</a>(a, b)   ((a)-(b)*<a class="el" href="common_8h.html#a5117194af5289224bceaaa5466586d8f">FFUDIV</a>(a,b))</td></tr>
<tr class="separator:aa0241c1e04e45d7be1b388d83ab57f22"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad6d88940cfc29c13a3e51ded211fc242"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#ad6d88940cfc29c13a3e51ded211fc242">FFABS</a>(a)   ((a) >= 0 ? (a) : (-(a)))</td></tr>
<tr class="memdesc:ad6d88940cfc29c13a3e51ded211fc242"><td class="mdescLeft"> </td><td class="mdescRight">Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable as absolute values of their type. <a href="#ad6d88940cfc29c13a3e51ded211fc242">More...</a><br/></td></tr>
<tr class="separator:ad6d88940cfc29c13a3e51ded211fc242"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af5e4ff7761996bc901e59bd59756268d"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#af5e4ff7761996bc901e59bd59756268d">FFSIGN</a>(a)   ((a) > 0 ? 1 : -1)</td></tr>
<tr class="separator:af5e4ff7761996bc901e59bd59756268d"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a4752e34ce9cae031c792b625b0736d97"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a4752e34ce9cae031c792b625b0736d97">FFNABS</a>(a)   ((a) <= 0 ? (a) : (-(a)))</td></tr>
<tr class="memdesc:a4752e34ce9cae031c792b625b0736d97"><td class="mdescLeft"> </td><td class="mdescRight">Negative Absolute value. <a href="#a4752e34ce9cae031c792b625b0736d97">More...</a><br/></td></tr>
<tr class="separator:a4752e34ce9cae031c792b625b0736d97"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:add8913a6f8e5714b6174eeaad5751006"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#add8913a6f8e5714b6174eeaad5751006">FFDIFFSIGN</a>(x, y)   (((x)>(y)) - ((x)<(y)))</td></tr>
<tr class="memdesc:add8913a6f8e5714b6174eeaad5751006"><td class="mdescLeft"> </td><td class="mdescRight">Comparator. <a href="#add8913a6f8e5714b6174eeaad5751006">More...</a><br/></td></tr>
<tr class="separator:add8913a6f8e5714b6174eeaad5751006"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9960bd6780a9b16a216a57be1ee04359"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a9960bd6780a9b16a216a57be1ee04359">FFMAX</a>(a, b)   ((a) > (b) ? (a) : (b))</td></tr>
<tr class="separator:a9960bd6780a9b16a216a57be1ee04359"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a013fdaa079045ec5632fe121e211e516"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a013fdaa079045ec5632fe121e211e516">FFMAX3</a>(a, b, c)   <a class="el" href="common_8h.html#a9960bd6780a9b16a216a57be1ee04359">FFMAX</a>(<a class="el" href="common_8h.html#a9960bd6780a9b16a216a57be1ee04359">FFMAX</a>(a,b),c)</td></tr>
<tr class="separator:a013fdaa079045ec5632fe121e211e516"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a0f84cbd7fd810cd678157c98cbfad4b0"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a0f84cbd7fd810cd678157c98cbfad4b0">FFMIN</a>(a, b)   ((a) > (b) ? (b) : (a))</td></tr>
<tr class="separator:a0f84cbd7fd810cd678157c98cbfad4b0"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af6afbffa12562b076c34055bdcb3ad65"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#af6afbffa12562b076c34055bdcb3ad65">FFMIN3</a>(a, b, c)   <a class="el" href="common_8h.html#a0f84cbd7fd810cd678157c98cbfad4b0">FFMIN</a>(<a class="el" href="common_8h.html#a0f84cbd7fd810cd678157c98cbfad4b0">FFMIN</a>(a,b),c)</td></tr>
<tr class="separator:af6afbffa12562b076c34055bdcb3ad65"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a09a0bb7d8fcfac416de7a5fe7fd8b0f1"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a09a0bb7d8fcfac416de7a5fe7fd8b0f1">FFSWAP</a>(type, a, b)   do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)</td></tr>
<tr class="separator:a09a0bb7d8fcfac416de7a5fe7fd8b0f1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3508a98d3ee7e2c9a4841fe264cf70f7"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a3508a98d3ee7e2c9a4841fe264cf70f7">FF_ARRAY_ELEMS</a>(a)   (sizeof(a) / sizeof((a)[0]))</td></tr>
<tr class="separator:a3508a98d3ee7e2c9a4841fe264cf70f7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a19c68e2b5efcbab914d79db1e4fee734"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a19c68e2b5efcbab914d79db1e4fee734">MKTAG</a>(a, b, c, d)   ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))</td></tr>
<tr class="separator:a19c68e2b5efcbab914d79db1e4fee734"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1e233db224cd0a3079fd4572d1a3d717"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a1e233db224cd0a3079fd4572d1a3d717">MKBETAG</a>(a, b, c, d)   ((d) | ((c) << 8) | ((b) << 16) | ((unsigned)(a) << 24))</td></tr>
<tr class="separator:a1e233db224cd0a3079fd4572d1a3d717"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1a2fd8cd42afb00c9f69562f52b1ae4b"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a1a2fd8cd42afb00c9f69562f52b1ae4b">GET_UTF8</a>(val, GET_BYTE, ERROR)</td></tr>
<tr class="memdesc:a1a2fd8cd42afb00c9f69562f52b1ae4b"><td class="mdescLeft"> </td><td class="mdescRight">Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form. <a href="#a1a2fd8cd42afb00c9f69562f52b1ae4b">More...</a><br/></td></tr>
<tr class="separator:a1a2fd8cd42afb00c9f69562f52b1ae4b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2665137b6cc64bb5cf491ba9f9dbd215"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a2665137b6cc64bb5cf491ba9f9dbd215">GET_UTF16</a>(val, GET_16BIT, ERROR)</td></tr>
<tr class="memdesc:a2665137b6cc64bb5cf491ba9f9dbd215"><td class="mdescLeft"> </td><td class="mdescRight">Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form. <a href="#a2665137b6cc64bb5cf491ba9f9dbd215">More...</a><br/></td></tr>
<tr class="separator:a2665137b6cc64bb5cf491ba9f9dbd215"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac6a994fe28410a8d14f70f0992db4f42"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#ac6a994fe28410a8d14f70f0992db4f42">PUT_UTF8</a>(val, tmp, PUT_BYTE)</td></tr>
<tr class="memdesc:ac6a994fe28410a8d14f70f0992db4f42"><td class="mdescLeft"> </td><td class="mdescRight">Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long). <a href="#ac6a994fe28410a8d14f70f0992db4f42">More...</a><br/></td></tr>
<tr class="separator:ac6a994fe28410a8d14f70f0992db4f42"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6486c4a216b16b4d2615c23d8429cd6b"><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a6486c4a216b16b4d2615c23d8429cd6b">PUT_UTF16</a>(val, tmp, PUT_16BIT)</td></tr>
<tr class="memdesc:a6486c4a216b16b4d2615c23d8429cd6b"><td class="mdescLeft"> </td><td class="mdescRight">Convert a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes). <a href="#a6486c4a216b16b4d2615c23d8429cd6b">More...</a><br/></td></tr>
<tr class="separator:a6486c4a216b16b4d2615c23d8429cd6b"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a10e72d08c6a66c91cf7218532631684e"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a10e72d08c6a66c91cf7218532631684e">av_log2</a> (unsigned v)</td></tr>
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<tr class="memitem:a8a1d3f387b1eab65327453f6a8e7e9ae"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a8a1d3f387b1eab65327453f6a8e7e9ae">av_log2_16bit</a> (unsigned v)</td></tr>
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<tr class="memitem:a465f39d69c5a5fe0e070b6ec4d0fed29"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a465f39d69c5a5fe0e070b6ec4d0fed29">av_clip_c</a> (int a, int amin, int amax)</td></tr>
<tr class="memdesc:a465f39d69c5a5fe0e070b6ec4d0fed29"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed integer value into the amin-amax range. <a href="#a465f39d69c5a5fe0e070b6ec4d0fed29">More...</a><br/></td></tr>
<tr class="separator:a465f39d69c5a5fe0e070b6ec4d0fed29"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aa4ed7e144d5b8397cff8656e9c786cb2"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#aa4ed7e144d5b8397cff8656e9c786cb2">av_clip64_c</a> (int64_t a, int64_t amin, int64_t amax)</td></tr>
<tr class="memdesc:aa4ed7e144d5b8397cff8656e9c786cb2"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed 64bit integer value into the amin-amax range. <a href="#aa4ed7e144d5b8397cff8656e9c786cb2">More...</a><br/></td></tr>
<tr class="separator:aa4ed7e144d5b8397cff8656e9c786cb2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8deed4a1ec39d0b1ab82d1f0e590a6f5"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a8deed4a1ec39d0b1ab82d1f0e590a6f5">av_clip_uint8_c</a> (int a)</td></tr>
<tr class="memdesc:a8deed4a1ec39d0b1ab82d1f0e590a6f5"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed integer value into the 0-255 range. <a href="#a8deed4a1ec39d0b1ab82d1f0e590a6f5">More...</a><br/></td></tr>
<tr class="separator:a8deed4a1ec39d0b1ab82d1f0e590a6f5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3091e5b3f2a340c3ddb29f6733fb2a4c"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a3091e5b3f2a340c3ddb29f6733fb2a4c">av_clip_int8_c</a> (int a)</td></tr>
<tr class="memdesc:a3091e5b3f2a340c3ddb29f6733fb2a4c"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed integer value into the -128,127 range. <a href="#a3091e5b3f2a340c3ddb29f6733fb2a4c">More...</a><br/></td></tr>
<tr class="separator:a3091e5b3f2a340c3ddb29f6733fb2a4c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a70a9a6b77373c47c48ef93511edaf9ce"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a70a9a6b77373c47c48ef93511edaf9ce">av_clip_uint16_c</a> (int a)</td></tr>
<tr class="memdesc:a70a9a6b77373c47c48ef93511edaf9ce"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed integer value into the 0-65535 range. <a href="#a70a9a6b77373c47c48ef93511edaf9ce">More...</a><br/></td></tr>
<tr class="separator:a70a9a6b77373c47c48ef93511edaf9ce"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aae95fa7073f1caa097951161985240f7"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#aae95fa7073f1caa097951161985240f7">av_clip_int16_c</a> (int a)</td></tr>
<tr class="memdesc:aae95fa7073f1caa097951161985240f7"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed integer value into the -32768,32767 range. <a href="#aae95fa7073f1caa097951161985240f7">More...</a><br/></td></tr>
<tr class="separator:aae95fa7073f1caa097951161985240f7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae245fb123a6e2a664c4806c034421e1e"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#ae245fb123a6e2a664c4806c034421e1e">av_clipl_int32_c</a> (int64_t a)</td></tr>
<tr class="memdesc:ae245fb123a6e2a664c4806c034421e1e"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed 64-bit integer value into the -2147483648,2147483647 range. <a href="#ae245fb123a6e2a664c4806c034421e1e">More...</a><br/></td></tr>
<tr class="separator:ae245fb123a6e2a664c4806c034421e1e"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad24148f23ca385e16b14885f52360abe"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#ad24148f23ca385e16b14885f52360abe">av_clip_intp2_c</a> (int a, int p)</td></tr>
<tr class="memdesc:ad24148f23ca385e16b14885f52360abe"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed integer into the -(2^p),(2^p-1) range. <a href="#ad24148f23ca385e16b14885f52360abe">More...</a><br/></td></tr>
<tr class="separator:ad24148f23ca385e16b14885f52360abe"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a867dba37c785d27d42b272aa968efda8"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a867dba37c785d27d42b272aa968efda8">av_clip_uintp2_c</a> (int a, int p)</td></tr>
<tr class="memdesc:a867dba37c785d27d42b272aa968efda8"><td class="mdescLeft"> </td><td class="mdescRight">Clip a signed integer to an unsigned power of two range. <a href="#a867dba37c785d27d42b272aa968efda8">More...</a><br/></td></tr>
<tr class="separator:a867dba37c785d27d42b272aa968efda8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3cb38786757c8f2a468560d9d7a6c59c"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a3cb38786757c8f2a468560d9d7a6c59c">av_mod_uintp2_c</a> (unsigned a, unsigned p)</td></tr>
<tr class="memdesc:a3cb38786757c8f2a468560d9d7a6c59c"><td class="mdescLeft"> </td><td class="mdescRight">Clear high bits from an unsigned integer starting with specific bit position. <a href="#a3cb38786757c8f2a468560d9d7a6c59c">More...</a><br/></td></tr>
<tr class="separator:a3cb38786757c8f2a468560d9d7a6c59c"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2ff75b1bf7fd1a261dd2f2919e8d23e1"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a2ff75b1bf7fd1a261dd2f2919e8d23e1">av_sat_add32_c</a> (int a, int b)</td></tr>
<tr class="memdesc:a2ff75b1bf7fd1a261dd2f2919e8d23e1"><td class="mdescLeft"> </td><td class="mdescRight">Add two signed 32-bit values with saturation. <a href="#a2ff75b1bf7fd1a261dd2f2919e8d23e1">More...</a><br/></td></tr>
<tr class="separator:a2ff75b1bf7fd1a261dd2f2919e8d23e1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:af235b48678850832493ac21160ff8458"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#af235b48678850832493ac21160ff8458">av_sat_dadd32_c</a> (int a, int b)</td></tr>
<tr class="memdesc:af235b48678850832493ac21160ff8458"><td class="mdescLeft"> </td><td class="mdescRight">Add a doubled value to another value with saturation at both stages. <a href="#af235b48678850832493ac21160ff8458">More...</a><br/></td></tr>
<tr class="separator:af235b48678850832493ac21160ff8458"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a7d5a6331d8708d4516aeab2413f86392"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> float </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a7d5a6331d8708d4516aeab2413f86392">av_clipf_c</a> (float a, float amin, float amax)</td></tr>
<tr class="memdesc:a7d5a6331d8708d4516aeab2413f86392"><td class="mdescLeft"> </td><td class="mdescRight">Clip a float value into the amin-amax range. <a href="#a7d5a6331d8708d4516aeab2413f86392">More...</a><br/></td></tr>
<tr class="separator:a7d5a6331d8708d4516aeab2413f86392"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9a257b0d07c767325ee48b5e16e0b97f"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> double </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a9a257b0d07c767325ee48b5e16e0b97f">av_clipd_c</a> (double a, double amin, double amax)</td></tr>
<tr class="memdesc:a9a257b0d07c767325ee48b5e16e0b97f"><td class="mdescLeft"> </td><td class="mdescRight">Clip a double value into the amin-amax range. <a href="#a9a257b0d07c767325ee48b5e16e0b97f">More...</a><br/></td></tr>
<tr class="separator:a9a257b0d07c767325ee48b5e16e0b97f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad94b463be296690fc9c096d55203b42b"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#ad94b463be296690fc9c096d55203b42b">av_ceil_log2_c</a> (int x)</td></tr>
<tr class="memdesc:ad94b463be296690fc9c096d55203b42b"><td class="mdescLeft"> </td><td class="mdescRight">Compute ceil(log2(x)). <a href="#ad94b463be296690fc9c096d55203b42b">More...</a><br/></td></tr>
<tr class="separator:ad94b463be296690fc9c096d55203b42b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a73ced2c040c8e53f58a6073c3f3927b5"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a73ced2c040c8e53f58a6073c3f3927b5">av_popcount_c</a> (uint32_t x)</td></tr>
<tr class="memdesc:a73ced2c040c8e53f58a6073c3f3927b5"><td class="mdescLeft"> </td><td class="mdescRight">Count number of bits set to one in x. <a href="#a73ced2c040c8e53f58a6073c3f3927b5">More...</a><br/></td></tr>
<tr class="separator:a73ced2c040c8e53f58a6073c3f3927b5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a1016d46d60ca2d27d8ab2af5f0f7c57a"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#a1016d46d60ca2d27d8ab2af5f0f7c57a">av_popcount64_c</a> (uint64_t x)</td></tr>
<tr class="memdesc:a1016d46d60ca2d27d8ab2af5f0f7c57a"><td class="mdescLeft"> </td><td class="mdescRight">Count number of bits set to one in x. <a href="#a1016d46d60ca2d27d8ab2af5f0f7c57a">More...</a><br/></td></tr>
<tr class="separator:a1016d46d60ca2d27d8ab2af5f0f7c57a"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aed51dfa317ec3988d6bb7734f19d5cba"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <br class="typebreak"/>
<a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int </td><td class="memItemRight" valign="bottom"><a class="el" href="common_8h.html#aed51dfa317ec3988d6bb7734f19d5cba">av_parity_c</a> (uint32_t v)</td></tr>
<tr class="separator:aed51dfa317ec3988d6bb7734f19d5cba"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>common internal and external API header </p>
<p>Definition in file <a class="el" href="common_8h_source.html">common.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="a309bdca20f6a78431379fc69442d98ea"></a>
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<td class="memname">#define AV_NE</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">be, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">le </td>
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<td>)</td>
<td></td><td>   (le)</td>
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</div><div class="memdoc">
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="demuxing_decoding_8c-example.html#a69">demuxing_decoding.c</a>, and <a class="el" href="resampling_audio_8c-example.html#a7">resampling_audio.c</a>.</dd>
</dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00050">50</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
<p>Referenced by <a class="el" href="demuxing__decoding_8c_source.html#l00190">get_format_from_sample_fmt()</a>.</p>
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<td class="memname">#define RSHIFT</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
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<td></td>
<td class="paramtype"> </td>
<td class="paramname">b </td>
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<td>)</td>
<td></td><td>   ((a) > 0 ? ((a) + ((1<<(b))>>1))>>(b) : ((a) + ((1<<(b))>>1)-1)>>(b))</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00054">54</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<a class="anchor" id="a7a2a86492a286d6d20678da1dbb00525"></a>
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<td class="memname">#define ROUNDED_DIV</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
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<td></td>
<td class="paramtype"> </td>
<td class="paramname">b </td>
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<td>)</td>
<td></td><td>   (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00056">56</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define AV_CEIL_RSHIFT</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
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<td class="paramtype"> </td>
<td class="paramname">b </td>
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<td>)</td>
<td></td><td></td>
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<b>Value:</b><div class="fragment"><div class="line">(!<a class="code" href="attributes_8h.html#a4887afda7f138d25d3f0dd843ca0ac18">av_builtin_constant_p</a>(b) ? -((-(a)) >> (b)) \</div>
<div class="line"> : ((a) + (1<<(b)) - 1) >> (b))</div>
<div class="ttc" id="attributes_8h_html_a4887afda7f138d25d3f0dd843ca0ac18"><div class="ttname"><a href="attributes_8h.html#a4887afda7f138d25d3f0dd843ca0ac18">av_builtin_constant_p</a></div><div class="ttdeci">#define av_builtin_constant_p</div><div class="ttdef"><b>Definition:</b> <a href="attributes_8h_source.html#l00155">attributes.h:155</a></div></div>
</div><!-- fragment -->
<p>Definition at line <a class="el" href="common_8h_source.html#l00058">58</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<a class="anchor" id="a33703f1a958afda17362487ed065ee0c"></a>
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<td class="memname">#define FF_CEIL_RSHIFT   <a class="el" href="common_8h.html#a5d13452b0fac0d41b08ea2e49ea6eaa5">AV_CEIL_RSHIFT</a></td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00061">61</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFUDIV</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b </td>
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<td>)</td>
<td></td><td>   (((a)>0 ?(a):(a)-(b)+1) / (b))</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00063">63</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFUMOD</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td>   ((a)-(b)*<a class="el" href="common_8h.html#a5117194af5289224bceaaa5466586d8f">FFUDIV</a>(a,b))</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00064">64</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFABS</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a</td><td>)</td>
<td>   ((a) >= 0 ? (a) : (-(a)))</td>
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<p>Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable as absolute values of their type. </p>
<p>This is the same as with *abs() </p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="common_8h.html#a4752e34ce9cae031c792b625b0736d97" title="Negative Absolute value. ">FFNABS()</a> </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00072">72</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFSIGN</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a</td><td>)</td>
<td>   ((a) > 0 ? 1 : -1)</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00073">73</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFNABS</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a</td><td>)</td>
<td>   ((a) <= 0 ? (a) : (-(a)))</td>
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<p>Negative Absolute value. </p>
<p>this works for all integers of all types. As with many macros, this evaluates its argument twice, it thus must not have a sideeffect, that is FFNABS(x++) has undefined behavior. </p>
<p>Definition at line <a class="el" href="common_8h_source.html#l00081">81</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFDIFFSIGN</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">x, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">y </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td>   (((x)>(y)) - ((x)<(y)))</td>
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<p>Comparator. </p>
<p>For two numerical expressions x and y, gives 1 if x > y, -1 if x < y, and 0 if x == y. This is useful for instance in a qsort comparator callback. Furthermore, compilers are able to optimize this to branchless code, and there is no risk of overflow with signed types. As with many macros, this evaluates its argument multiple times, it thus must not have a side-effect. </p>
<p>Definition at line <a class="el" href="common_8h_source.html#l00092">92</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFMAX</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td>   ((a) > (b) ? (a) : (b))</td>
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<dl><dt><b>Examples: </b></dt><dd><a class="el" href="decoding_encoding_8c-example.html#a6">decoding_encoding.c</a>.</dd>
</dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00094">94</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
<p>Referenced by <a class="el" href="decoding__encoding_8c_source.html#l00061">select_sample_rate()</a>.</p>
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<td class="memname">#define FFMAX3</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">c </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td>   <a class="el" href="common_8h.html#a9960bd6780a9b16a216a57be1ee04359">FFMAX</a>(<a class="el" href="common_8h.html#a9960bd6780a9b16a216a57be1ee04359">FFMAX</a>(a,b),c)</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00095">95</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFMIN</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td>   ((a) > (b) ? (b) : (a))</td>
</tr>
</table>
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<dl><dt><b>Examples: </b></dt><dd><a class="el" href="avio_reading_8c-example.html#a4">avio_reading.c</a>, <a class="el" href="demuxing_decoding_8c-example.html#a45">demuxing_decoding.c</a>, and <a class="el" href="transcode_aac_8c-example.html#a86">transcode_aac.c</a>.</dd>
</dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00096">96</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
<p>Referenced by <a class="el" href="demuxing__decoding_8c_source.html#l00064">decode_packet()</a>, <a class="el" href="transcode__aac_8c_source.html#l00597">load_encode_and_write()</a>, and <a class="el" href="avio__reading_8c_source.html#l00042">read_packet()</a>.</p>
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<td class="memname">#define FFMIN3</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">c </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td>   <a class="el" href="common_8h.html#a0f84cbd7fd810cd678157c98cbfad4b0">FFMIN</a>(<a class="el" href="common_8h.html#a0f84cbd7fd810cd678157c98cbfad4b0">FFMIN</a>(a,b),c)</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00097">97</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FFSWAP</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">type, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td>   do{type SWAP_tmp= b; b= a; a= SWAP_tmp;}while(0)</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00099">99</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define FF_ARRAY_ELEMS</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a</td><td>)</td>
<td>   (sizeof(a) / sizeof((a)[0]))</td>
</tr>
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<dl><dt><b>Examples: </b></dt><dd><a class="el" href="demuxing_decoding_8c-example.html#a68">demuxing_decoding.c</a>, and <a class="el" href="resampling_audio_8c-example.html#a6">resampling_audio.c</a>.</dd>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00100">100</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
<p>Referenced by <a class="el" href="demuxing__decoding_8c_source.html#l00190">get_format_from_sample_fmt()</a>.</p>
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<td class="memname">#define MKTAG</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">c, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">d </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td>   ((a) | ((b) << 8) | ((c) << 16) | ((unsigned)(d) << 24))</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00342">342</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define MKBETAG</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">a, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">b, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">c, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">d </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td>   ((d) | ((c) << 8) | ((b) << 16) | ((unsigned)(a) << 24))</td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00343">343</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define GET_UTF8</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">val, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">GET_BYTE, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">ERROR </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td>
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<b>Value:</b><div class="fragment"><div class="line">val= (GET_BYTE);\</div>
<div class="line"> {\</div>
<div class="line"> uint32_t top = (val & 128) >> 1;\</div>
<div class="line"> if ((val & 0xc0) == 0x80 || val >= 0xFE)\</div>
<div class="line"> ERROR\</div>
<div class="line"> while (val & top) {\</div>
<div class="line"> int tmp= (GET_BYTE) - 128;\</div>
<div class="line"> if(tmp>>6)\</div>
<div class="line"> ERROR\</div>
<div class="line"> val= (val<<6) + tmp;\</div>
<div class="line"> top <<= 5;\</div>
<div class="line"> }\</div>
<div class="line"> val &= (top << 1) - 1;\</div>
<div class="line"> }</div>
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<p>Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">val</td><td>Output value, must be an lvalue of type uint32_t. </td></tr>
<tr><td class="paramname">GET_BYTE</td><td>Expression reading one byte from the input. Evaluated up to 7 times (4 for the currently assigned Unicode range). With a memory buffer input, this could be *ptr++. </td></tr>
<tr><td class="paramname">ERROR</td><td>Expression to be evaluated on invalid input, typically a goto statement.</td></tr>
</table>
</dd>
</dl>
<dl class="section warning"><dt>Warning</dt><dd>ERROR should not contain a loop control statement which could interact with the internal while loop, and should force an exit from the macro code (e.g. through a goto or a return) in order to prevent undefined results. </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00361">361</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define GET_UTF16</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">val, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">GET_16BIT, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">ERROR </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td>
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<b>Value:</b><div class="fragment"><div class="line">val = GET_16BIT;\</div>
<div class="line"> {\</div>
<div class="line"> unsigned <span class="keywordtype">int</span> hi = val - 0xD800;\</div>
<div class="line"> if (hi < 0x800) {\</div>
<div class="line"> val = GET_16BIT - 0xDC00;\</div>
<div class="line"> if (val > 0x3FFU || hi > 0x3FFU)\</div>
<div class="line"> ERROR\</div>
<div class="line"> val += (hi<<10) + 0x10000;\</div>
<div class="line"> }\</div>
<div class="line"> }\</div>
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<p>Convert a UTF-16 character (2 or 4 bytes) to its 32-bit UCS-4 encoded form. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">val</td><td>Output value, must be an lvalue of type uint32_t. </td></tr>
<tr><td class="paramname">GET_16BIT</td><td>Expression returning two bytes of UTF-16 data converted to native byte order. Evaluated one or two times. </td></tr>
<tr><td class="paramname">ERROR</td><td>Expression to be evaluated on invalid input, typically a goto statement. </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00386">386</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define PUT_UTF8</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">val, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">tmp, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">PUT_BYTE </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<b>Value:</b><div class="fragment"><div class="line">{\</div>
<div class="line"> int bytes, shift;\</div>
<div class="line"> uint32_t in = val;\</div>
<div class="line"> if (in < 0x80) {\</div>
<div class="line"> tmp = in;\</div>
<div class="line"> PUT_BYTE\</div>
<div class="line"> } <span class="keywordflow">else</span> {\</div>
<div class="line"> bytes = (<a class="code" href="common_8h.html#a10e72d08c6a66c91cf7218532631684e">av_log2</a>(in) + 4) / 5;\</div>
<div class="line"> shift = (bytes - 1) * 6;\</div>
<div class="line"> tmp = (256 - (256 >> bytes)) | (in >> shift);\</div>
<div class="line"> PUT_BYTE\</div>
<div class="line"> while (shift >= 6) {\</div>
<div class="line"> shift -= 6;\</div>
<div class="line"> tmp = 0x80 | ((in >> shift) & 0x3f);\</div>
<div class="line"> PUT_BYTE\</div>
<div class="line"> }\</div>
<div class="line"> }\</div>
<div class="line"> }</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>
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<p>Convert a 32-bit Unicode character to its UTF-8 encoded form (up to 4 bytes long). </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">val</td><td>is an input-only argument and should be of type uint32_t. It holds a UCS-4 encoded Unicode character that is to be converted to UTF-8. If val is given as a function it is executed only once. </td></tr>
<tr><td class="paramname">tmp</td><td>is a temporary variable and should be of type uint8_t. It represents an intermediate value during conversion that is to be output by PUT_BYTE. </td></tr>
<tr><td class="paramname">PUT_BYTE</td><td>writes the converted UTF-8 bytes to any proper destination. It could be a function or a statement, and uses tmp as the input byte. For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be executed up to 4 times for values in the valid UTF-8 range and up to 7 times in the general case, depending on the length of the converted Unicode character. </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00414">414</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">#define PUT_UTF16</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">val, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">tmp, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"> </td>
<td class="paramname">PUT_16BIT </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<b>Value:</b><div class="fragment"><div class="line">{\</div>
<div class="line"> uint32_t in = val;\</div>
<div class="line"> if (in < 0x10000) {\</div>
<div class="line"> tmp = in;\</div>
<div class="line"> PUT_16BIT\</div>
<div class="line"> } <span class="keywordflow">else</span> {\</div>
<div class="line"> tmp = 0xD800 | ((in - 0x10000) >> 10);\</div>
<div class="line"> PUT_16BIT\</div>
<div class="line"> tmp = 0xDC00 | ((in - 0x10000) & 0x3FF);\</div>
<div class="line"> PUT_16BIT\</div>
<div class="line"> }\</div>
<div class="line"> }\</div>
</div><!-- fragment -->
<p>Convert a 32-bit Unicode character to its UTF-16 encoded form (2 or 4 bytes). </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">val</td><td>is an input-only argument and should be of type uint32_t. It holds a UCS-4 encoded Unicode character that is to be converted to UTF-16. If val is given as a function it is executed only once. </td></tr>
<tr><td class="paramname">tmp</td><td>is a temporary variable and should be of type uint16_t. It represents an intermediate value during conversion that is to be output by PUT_16BIT. </td></tr>
<tr><td class="paramname">PUT_16BIT</td><td>writes the converted UTF-16 data to any proper destination in desired endianness. It could be a function or a statement, and uses tmp as the input byte. For example, PUT_BYTE could be "*output++ = tmp;" PUT_BYTE will be executed 1 or 2 times depending on input character. </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00448">448</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<h2 class="groupheader">Function Documentation</h2>
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<td class="memname"><a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int av_log2 </td>
<td>(</td>
<td class="paramtype">unsigned </td>
<td class="paramname"><em>v</em></td><td>)</td>
<td></td>
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<p>Referenced by <a class="el" href="common_8h_source.html#l00308">av_ceil_log2_c()</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int av_log2_16bit </td>
<td>(</td>
<td class="paramtype">unsigned </td>
<td class="paramname"><em>v</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
</div>
</div>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int av_clip_c </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>a</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>amin</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>amax</em> </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Clip a signed integer value into the amin-amax range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
<tr><td class="paramname">amin</td><td>minimum value of the clip range </td></tr>
<tr><td class="paramname">amax</td><td>maximum value of the clip range </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00127">127</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int64_t av_clip64_c </td>
<td>(</td>
<td class="paramtype">int64_t </td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramtype">int64_t </td>
<td class="paramname"><em>amin</em>, </td>
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<td class="paramtype">int64_t </td>
<td class="paramname"><em>amax</em> </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Clip a signed 64bit integer value into the amin-amax range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
<tr><td class="paramname">amin</td><td>minimum value of the clip range </td></tr>
<tr><td class="paramname">amax</td><td>maximum value of the clip range </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00144">144</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> uint8_t av_clip_uint8_c </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>a</em></td><td>)</td>
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<p>Clip a signed integer value into the 0-255 range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00159">159</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>a</em></td><td>)</td>
<td></td>
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<p>Clip a signed integer value into the -128,127 range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00170">170</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="paramtype">int </td>
<td class="paramname"><em>a</em></td><td>)</td>
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<p>Clip a signed integer value into the 0-65535 range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00181">181</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>a</em></td><td>)</td>
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<p>Clip a signed integer value into the -32768,32767 range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00192">192</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int32_t av_clipl_int32_c </td>
<td>(</td>
<td class="paramtype">int64_t </td>
<td class="paramname"><em>a</em></td><td>)</td>
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<p>Clip a signed 64-bit integer value into the -2147483648,2147483647 range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00203">203</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int av_clip_intp2_c </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>a</em>, </td>
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<p>Clip a signed integer into the -(2^p),(2^p-1) range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
<tr><td class="paramname">p</td><td>bit position to clip at </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00215">215</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> unsigned av_clip_uintp2_c </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramname"><em>p</em> </td>
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<p>Clip a signed integer to an unsigned power of two range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
<tr><td class="paramname">p</td><td>bit position to clip at </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00229">229</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td>(</td>
<td class="paramtype">unsigned </td>
<td class="paramname"><em>a</em>, </td>
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<td class="paramname"><em>p</em> </td>
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<p>Clear high bits from an unsigned integer starting with specific bit position. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
<tr><td class="paramname">p</td><td>bit position to clip at </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00241">241</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> int av_sat_add32_c </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>a</em>, </td>
</tr>
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<td class="paramname"><em>b</em> </td>
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<p>Add two signed 32-bit values with saturation. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>one value </td></tr>
<tr><td class="paramname">b</td><td>another value </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>sum with signed saturation </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00253">253</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> int av_sat_dadd32_c </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>a</em>, </td>
</tr>
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<td class="paramname"><em>b</em> </td>
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<p>Add a doubled value to another value with saturation at both stages. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>first value </td></tr>
<tr><td class="paramname">b</td><td>value doubled and added to a </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>sum with signed saturation </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00265">265</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> float av_clipf_c </td>
<td>(</td>
<td class="paramtype">float </td>
<td class="paramname"><em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float </td>
<td class="paramname"><em>amin</em>, </td>
</tr>
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<td class="paramkey"></td>
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<td class="paramtype">float </td>
<td class="paramname"><em>amax</em> </td>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Clip a float value into the amin-amax range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
<tr><td class="paramname">amin</td><td>minimum value of the clip range </td></tr>
<tr><td class="paramname">amax</td><td>maximum value of the clip range </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00277">277</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> double av_clipd_c </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"><em>a</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"><em>amin</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">double </td>
<td class="paramname"><em>amax</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
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</td>
<td class="mlabels-right">
<span class="mlabels"><span class="mlabel">static</span></span> </td>
</tr>
</table>
</div><div class="memdoc">
<p>Clip a double value into the amin-amax range. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">a</td><td>value to clip </td></tr>
<tr><td class="paramname">amin</td><td>minimum value of the clip range </td></tr>
<tr><td class="paramname">amax</td><td>maximum value of the clip range </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>clipped value </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00294">294</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int av_ceil_log2_c </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>x</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<p>Compute ceil(log2(x)). </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">x</td><td>value used to compute ceil(log2(x)) </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>computed ceiling of log2(x) </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00308">308</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int av_popcount_c </td>
<td>(</td>
<td class="paramtype">uint32_t </td>
<td class="paramname"><em>x</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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</div><div class="memdoc">
<p>Count number of bits set to one in x. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">x</td><td>value to count bits of </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the number of bits set to one in x </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00318">318</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int av_popcount64_c </td>
<td>(</td>
<td class="paramtype">uint64_t </td>
<td class="paramname"><em>x</em></td><td>)</td>
<td></td>
</tr>
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<p>Count number of bits set to one in x. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">x</td><td>value to count bits of </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the number of bits set to one in x </dd></dl>
<p>Definition at line <a class="el" href="common_8h_source.html#l00332">332</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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<td class="memname">static <a class="el" href="attributes_8h.html#a28f50f4c125959216885f01d56dbe866">av_always_inline</a> <a class="el" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> int av_parity_c </td>
<td>(</td>
<td class="paramtype">uint32_t </td>
<td class="paramname"><em>v</em></td><td>)</td>
<td></td>
</tr>
</table>
</td>
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<span class="mlabels"><span class="mlabel">static</span></span> </td>
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<p>Definition at line <a class="el" href="common_8h_source.html#l00337">337</a> of file <a class="el" href="common_8h_source.html">common.h</a>.</p>
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