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<p>audio channel layout utility functions
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<div class="textblock"><code>#include <stdint.h></code><br/>
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<p><a href="channel__layout_8h_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="define-members"></a>
Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#gaf9c5619f74c99ea8a8606719c01fe7df">AV_CH_FRONT_LEFT</a>   0x00000001</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga394b4b2c87790178bf7b683b45320f31">AV_CH_FRONT_RIGHT</a>   0x00000002</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga88f2868b232a89fd11ad9d6c39d502a1">AV_CH_FRONT_CENTER</a>   0x00000004</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#gab19b66e345cf1f9d50ffc26c28862bcc">AV_CH_LOW_FREQUENCY</a>   0x00000008</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#gaa3cae8c6d0eaab3dc3ce178f6af81ae2">AV_CH_BACK_LEFT</a>   0x00000010</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga7a7ab3bb418bf9672dcdf6554346e5eb">AV_CH_BACK_RIGHT</a>   0x00000020</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga6c9ea2ea60044bfe844174300b237386">AV_CH_FRONT_LEFT_OF_CENTER</a>   0x00000040</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga558dc25b0ce327d2547d3cc9e4bd6a4e">AV_CH_FRONT_RIGHT_OF_CENTER</a>   0x00000080</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga68650a364e52edb62d5984dddec4f935">AV_CH_BACK_CENTER</a>   0x00000100</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga02e55f35249dfa57a2e4edfd3acfec4f">AV_CH_SIDE_LEFT</a>   0x00000200</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga947b60ab70c428ebb07c8b9c87023b39">AV_CH_SIDE_RIGHT</a>   0x00000400</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga922199ce7638a651d66a423379b4c5dc">AV_CH_TOP_CENTER</a>   0x00000800</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga352bec66d2e1bef67efe5b7f0a4207f3">AV_CH_TOP_FRONT_LEFT</a>   0x00001000</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga6b558fe85e67383a5b04e56b97b145d0">AV_CH_TOP_FRONT_CENTER</a>   0x00002000</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#gabce29ea1d7e2d433263b2cbf28232360">AV_CH_TOP_FRONT_RIGHT</a>   0x00004000</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#gaac082f244f37f9c5d8e4f7bf96cc76dc">AV_CH_TOP_BACK_LEFT</a>   0x00008000</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga439a8664c452f9782b460f61a3908451">AV_CH_TOP_BACK_CENTER</a>   0x00010000</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga8fa88c3c74339f4218a3e70286fdbdaa">AV_CH_TOP_BACK_RIGHT</a>   0x00020000</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#gaea8f62dcaa4774307a8fa9b52172c688">AV_CH_STEREO_LEFT</a>   0x20000000</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Stereo downmix. <a href="group__channel__masks.html#gaea8f62dcaa4774307a8fa9b52172c688"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#gab68e7edb9182b1b22898b960707143c1">AV_CH_STEREO_RIGHT</a>   0x40000000</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">See AV_CH_STEREO_LEFT. <a href="group__channel__masks.html#gab68e7edb9182b1b22898b960707143c1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga11e273c4872335063b5059cca52218c0">AV_CH_WIDE_LEFT</a>   0x0000000080000000ULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga2c7ff738c3481d2891d052f5bca55248">AV_CH_WIDE_RIGHT</a>   0x0000000100000000ULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#gafc04912a8294d8788e4162092df8a549">AV_CH_SURROUND_DIRECT_LEFT</a>   0x0000000200000000ULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga0c9137cc9fd60d15be588e2eff3cfa23">AV_CH_SURROUND_DIRECT_RIGHT</a>   0x0000000400000000ULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga72d2eaef6727608379ab29859f5d5ee2">AV_CH_LOW_FREQUENCY_2</a>   0x0000000800000000ULL</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__masks.html#ga7ab04ac641edef25c03de0a577eab57d">AV_CH_LAYOUT_NATIVE</a>   0x8000000000000000ULL</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Channel mask value used for <a class="el" href="structAVCodecContext.html#a9c02c458deaa58cc603da038b6acab1b" title="Request decoder to use this channel layout if it can (0 for default)">AVCodecContext.request_channel_layout</a> to indicate that the user requests the channel order of the decoder output to be the native codec channel order. <a href="group__channel__masks.html#ga7ab04ac641edef25c03de0a577eab57d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga53d6da2dcd56f5f87c7afd8b33fa15ba">AV_CH_LAYOUT_MONO</a>   (<a class="el" href="group__channel__masks.html#ga88f2868b232a89fd11ad9d6c39d502a1">AV_CH_FRONT_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gabc6d6651bba254cd0fa2c42a57228e65">AV_CH_LAYOUT_STEREO</a>   (<a class="el" href="group__channel__masks.html#gaf9c5619f74c99ea8a8606719c01fe7df">AV_CH_FRONT_LEFT</a>|<a class="el" href="group__channel__masks.html#ga394b4b2c87790178bf7b683b45320f31">AV_CH_FRONT_RIGHT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga03f59e18b3598aa0cab9ed675c287a36">AV_CH_LAYOUT_2POINT1</a>   (<a class="el" href="group__channel__mask__c.html#gabc6d6651bba254cd0fa2c42a57228e65">AV_CH_LAYOUT_STEREO</a>|<a class="el" href="group__channel__masks.html#gab19b66e345cf1f9d50ffc26c28862bcc">AV_CH_LOW_FREQUENCY</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gad0badd9c9984bc74290f26c2edfdfe44">AV_CH_LAYOUT_2_1</a>   (<a class="el" href="group__channel__mask__c.html#gabc6d6651bba254cd0fa2c42a57228e65">AV_CH_LAYOUT_STEREO</a>|<a class="el" href="group__channel__masks.html#ga68650a364e52edb62d5984dddec4f935">AV_CH_BACK_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga625aec7f2285dc35e3ed801e91889564">AV_CH_LAYOUT_SURROUND</a>   (<a class="el" href="group__channel__mask__c.html#gabc6d6651bba254cd0fa2c42a57228e65">AV_CH_LAYOUT_STEREO</a>|<a class="el" href="group__channel__masks.html#ga88f2868b232a89fd11ad9d6c39d502a1">AV_CH_FRONT_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gae3fc8d83d40cfbd4910b16d526beb294">AV_CH_LAYOUT_3POINT1</a>   (<a class="el" href="group__channel__mask__c.html#ga625aec7f2285dc35e3ed801e91889564">AV_CH_LAYOUT_SURROUND</a>|<a class="el" href="group__channel__masks.html#gab19b66e345cf1f9d50ffc26c28862bcc">AV_CH_LOW_FREQUENCY</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga0bcbe41f2d3214b0a3fd2698ebe0caf9">AV_CH_LAYOUT_4POINT0</a>   (<a class="el" href="group__channel__mask__c.html#ga625aec7f2285dc35e3ed801e91889564">AV_CH_LAYOUT_SURROUND</a>|<a class="el" href="group__channel__masks.html#ga68650a364e52edb62d5984dddec4f935">AV_CH_BACK_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gacc48c498c05b3b3c2549f715ba4f1d1b">AV_CH_LAYOUT_4POINT1</a>   (<a class="el" href="group__channel__mask__c.html#ga0bcbe41f2d3214b0a3fd2698ebe0caf9">AV_CH_LAYOUT_4POINT0</a>|<a class="el" href="group__channel__masks.html#gab19b66e345cf1f9d50ffc26c28862bcc">AV_CH_LOW_FREQUENCY</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga5c25ee8b976d0cb15e0b6d2cf923d19d">AV_CH_LAYOUT_2_2</a>   (<a class="el" href="group__channel__mask__c.html#gabc6d6651bba254cd0fa2c42a57228e65">AV_CH_LAYOUT_STEREO</a>|<a class="el" href="group__channel__masks.html#ga02e55f35249dfa57a2e4edfd3acfec4f">AV_CH_SIDE_LEFT</a>|<a class="el" href="group__channel__masks.html#ga947b60ab70c428ebb07c8b9c87023b39">AV_CH_SIDE_RIGHT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga0982ce29eced939dfcfb5b52416810ae">AV_CH_LAYOUT_QUAD</a>   (<a class="el" href="group__channel__mask__c.html#gabc6d6651bba254cd0fa2c42a57228e65">AV_CH_LAYOUT_STEREO</a>|<a class="el" href="group__channel__masks.html#gaa3cae8c6d0eaab3dc3ce178f6af81ae2">AV_CH_BACK_LEFT</a>|<a class="el" href="group__channel__masks.html#ga7a7ab3bb418bf9672dcdf6554346e5eb">AV_CH_BACK_RIGHT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga10eddec555bcf849efce5158b0cbdb50">AV_CH_LAYOUT_5POINT0</a>   (<a class="el" href="group__channel__mask__c.html#ga625aec7f2285dc35e3ed801e91889564">AV_CH_LAYOUT_SURROUND</a>|<a class="el" href="group__channel__masks.html#ga02e55f35249dfa57a2e4edfd3acfec4f">AV_CH_SIDE_LEFT</a>|<a class="el" href="group__channel__masks.html#ga947b60ab70c428ebb07c8b9c87023b39">AV_CH_SIDE_RIGHT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gac36a042dc21866f9043ce930f300d0df">AV_CH_LAYOUT_5POINT1</a>   (<a class="el" href="group__channel__mask__c.html#ga10eddec555bcf849efce5158b0cbdb50">AV_CH_LAYOUT_5POINT0</a>|<a class="el" href="group__channel__masks.html#gab19b66e345cf1f9d50ffc26c28862bcc">AV_CH_LOW_FREQUENCY</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gab057e9fd36b7e929d000d663badbafc6">AV_CH_LAYOUT_5POINT0_BACK</a>   (<a class="el" href="group__channel__mask__c.html#ga625aec7f2285dc35e3ed801e91889564">AV_CH_LAYOUT_SURROUND</a>|<a class="el" href="group__channel__masks.html#gaa3cae8c6d0eaab3dc3ce178f6af81ae2">AV_CH_BACK_LEFT</a>|<a class="el" href="group__channel__masks.html#ga7a7ab3bb418bf9672dcdf6554346e5eb">AV_CH_BACK_RIGHT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gae9da5d6069701241a22f3af19b152662">AV_CH_LAYOUT_5POINT1_BACK</a>   (<a class="el" href="group__channel__mask__c.html#gab057e9fd36b7e929d000d663badbafc6">AV_CH_LAYOUT_5POINT0_BACK</a>|<a class="el" href="group__channel__masks.html#gab19b66e345cf1f9d50ffc26c28862bcc">AV_CH_LOW_FREQUENCY</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga0fbea70d397140a524b55018128fca77">AV_CH_LAYOUT_6POINT0</a>   (<a class="el" href="group__channel__mask__c.html#ga10eddec555bcf849efce5158b0cbdb50">AV_CH_LAYOUT_5POINT0</a>|<a class="el" href="group__channel__masks.html#ga68650a364e52edb62d5984dddec4f935">AV_CH_BACK_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga735985d89e38896a0cb9e5a1e96cb9b8">AV_CH_LAYOUT_6POINT0_FRONT</a>   (<a class="el" href="group__channel__mask__c.html#ga5c25ee8b976d0cb15e0b6d2cf923d19d">AV_CH_LAYOUT_2_2</a>|<a class="el" href="group__channel__masks.html#ga6c9ea2ea60044bfe844174300b237386">AV_CH_FRONT_LEFT_OF_CENTER</a>|<a class="el" href="group__channel__masks.html#ga558dc25b0ce327d2547d3cc9e4bd6a4e">AV_CH_FRONT_RIGHT_OF_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga44e719835fe17c5af5e619083918d1ca">AV_CH_LAYOUT_HEXAGONAL</a>   (<a class="el" href="group__channel__mask__c.html#gab057e9fd36b7e929d000d663badbafc6">AV_CH_LAYOUT_5POINT0_BACK</a>|<a class="el" href="group__channel__masks.html#ga68650a364e52edb62d5984dddec4f935">AV_CH_BACK_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga0b63b18f49c294bfbc22afa8b59b6685">AV_CH_LAYOUT_6POINT1</a>   (<a class="el" href="group__channel__mask__c.html#gac36a042dc21866f9043ce930f300d0df">AV_CH_LAYOUT_5POINT1</a>|<a class="el" href="group__channel__masks.html#ga68650a364e52edb62d5984dddec4f935">AV_CH_BACK_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gaaf1920f827888aeb99540f3ee5a78cea">AV_CH_LAYOUT_6POINT1_BACK</a>   (<a class="el" href="group__channel__mask__c.html#gae9da5d6069701241a22f3af19b152662">AV_CH_LAYOUT_5POINT1_BACK</a>|<a class="el" href="group__channel__masks.html#ga68650a364e52edb62d5984dddec4f935">AV_CH_BACK_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga934ec29833f0cbc4a1fe8f97cc914664">AV_CH_LAYOUT_6POINT1_FRONT</a>   (<a class="el" href="group__channel__mask__c.html#ga735985d89e38896a0cb9e5a1e96cb9b8">AV_CH_LAYOUT_6POINT0_FRONT</a>|<a class="el" href="group__channel__masks.html#gab19b66e345cf1f9d50ffc26c28862bcc">AV_CH_LOW_FREQUENCY</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gab843d4e87bc747c7a81f082589023f98">AV_CH_LAYOUT_7POINT0</a>   (<a class="el" href="group__channel__mask__c.html#ga10eddec555bcf849efce5158b0cbdb50">AV_CH_LAYOUT_5POINT0</a>|<a class="el" href="group__channel__masks.html#gaa3cae8c6d0eaab3dc3ce178f6af81ae2">AV_CH_BACK_LEFT</a>|<a class="el" href="group__channel__masks.html#ga7a7ab3bb418bf9672dcdf6554346e5eb">AV_CH_BACK_RIGHT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gaa4c21d7abb460730295f99c7f0098259">AV_CH_LAYOUT_7POINT0_FRONT</a>   (<a class="el" href="group__channel__mask__c.html#ga10eddec555bcf849efce5158b0cbdb50">AV_CH_LAYOUT_5POINT0</a>|<a class="el" href="group__channel__masks.html#ga6c9ea2ea60044bfe844174300b237386">AV_CH_FRONT_LEFT_OF_CENTER</a>|<a class="el" href="group__channel__masks.html#ga558dc25b0ce327d2547d3cc9e4bd6a4e">AV_CH_FRONT_RIGHT_OF_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga2006ce652a95bad74291db52fa346464">AV_CH_LAYOUT_7POINT1</a>   (<a class="el" href="group__channel__mask__c.html#gac36a042dc21866f9043ce930f300d0df">AV_CH_LAYOUT_5POINT1</a>|<a class="el" href="group__channel__masks.html#gaa3cae8c6d0eaab3dc3ce178f6af81ae2">AV_CH_BACK_LEFT</a>|<a class="el" href="group__channel__masks.html#ga7a7ab3bb418bf9672dcdf6554346e5eb">AV_CH_BACK_RIGHT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga883478469aa86f5c3f57ce864a12745b">AV_CH_LAYOUT_7POINT1_WIDE</a>   (<a class="el" href="group__channel__mask__c.html#gac36a042dc21866f9043ce930f300d0df">AV_CH_LAYOUT_5POINT1</a>|<a class="el" href="group__channel__masks.html#ga6c9ea2ea60044bfe844174300b237386">AV_CH_FRONT_LEFT_OF_CENTER</a>|<a class="el" href="group__channel__masks.html#ga558dc25b0ce327d2547d3cc9e4bd6a4e">AV_CH_FRONT_RIGHT_OF_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga9702d40a7d1f6e2b00e02d8ecb83bd63">AV_CH_LAYOUT_7POINT1_WIDE_BACK</a>   (<a class="el" href="group__channel__mask__c.html#gae9da5d6069701241a22f3af19b152662">AV_CH_LAYOUT_5POINT1_BACK</a>|<a class="el" href="group__channel__masks.html#ga6c9ea2ea60044bfe844174300b237386">AV_CH_FRONT_LEFT_OF_CENTER</a>|<a class="el" href="group__channel__masks.html#ga558dc25b0ce327d2547d3cc9e4bd6a4e">AV_CH_FRONT_RIGHT_OF_CENTER</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gaa760931c084e33a254fca038b7de8dae">AV_CH_LAYOUT_OCTAGONAL</a>   (<a class="el" href="group__channel__mask__c.html#ga10eddec555bcf849efce5158b0cbdb50">AV_CH_LAYOUT_5POINT0</a>|<a class="el" href="group__channel__masks.html#gaa3cae8c6d0eaab3dc3ce178f6af81ae2">AV_CH_BACK_LEFT</a>|<a class="el" href="group__channel__masks.html#ga68650a364e52edb62d5984dddec4f935">AV_CH_BACK_CENTER</a>|<a class="el" href="group__channel__masks.html#ga7a7ab3bb418bf9672dcdf6554346e5eb">AV_CH_BACK_RIGHT</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga3004e784b29fd907a0d4aebeca0e6933">AV_CH_LAYOUT_STEREO_DOWNMIX</a>   (<a class="el" href="group__channel__masks.html#gaea8f62dcaa4774307a8fa9b52172c688">AV_CH_STEREO_LEFT</a>|<a class="el" href="group__channel__masks.html#gab68e7edb9182b1b22898b960707143c1">AV_CH_STEREO_RIGHT</a>)</td></tr>
<tr><td colspan="2"><h2><a name="enum-members"></a>
Enumerations</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gabd576ea664e3ac5d31f3362064fe13e6">AVMatrixEncoding</a> { <br/>
  <a class="el" href="group__channel__mask__c.html#ggabd576ea664e3ac5d31f3362064fe13e6a04179fd7b3339556603020ae88e02793">AV_MATRIX_ENCODING_NONE</a>,
<a class="el" href="group__channel__mask__c.html#ggabd576ea664e3ac5d31f3362064fe13e6a0578f715ed49986a6e4c40884c174dbd">AV_MATRIX_ENCODING_DOLBY</a>,
<a class="el" href="group__channel__mask__c.html#ggabd576ea664e3ac5d31f3362064fe13e6a068d30f3ce95f82781b0052bf86bc10e">AV_MATRIX_ENCODING_DPLII</a>,
<a class="el" href="group__channel__mask__c.html#ggabd576ea664e3ac5d31f3362064fe13e6a03124652d3e9efb6ce687971c7abbfa1">AV_MATRIX_ENCODING_DPLIIX</a>,
<br/>
  <a class="el" href="group__channel__mask__c.html#ggabd576ea664e3ac5d31f3362064fe13e6a927893de2c83ddb117fb89dcc579e363">AV_MATRIX_ENCODING_DPLIIZ</a>,
<a class="el" href="group__channel__mask__c.html#ggabd576ea664e3ac5d31f3362064fe13e6aa155505a7fb9f2b45778b1d7776dcfb7">AV_MATRIX_ENCODING_DOLBYEX</a>,
<a class="el" href="group__channel__mask__c.html#ggabd576ea664e3ac5d31f3362064fe13e6ad9089736c1dd449617a2805d37e502d3">AV_MATRIX_ENCODING_DOLBYHEADPHONE</a>,
<a class="el" href="group__channel__mask__c.html#ggabd576ea664e3ac5d31f3362064fe13e6a3a3acaf62825a3b21c7631ddf1dcc648">AV_MATRIX_ENCODING_NB</a>
<br/>
}</td></tr>
<tr><td colspan="2"><h2><a name="func-members"></a>
Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga3e8a7ab3d4c1ac98b902ab6b00741343">av_get_channel_layout</a> (const char *name)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a channel layout id that matches name, or 0 if no match is found. <a href="group__channel__mask__c.html#ga3e8a7ab3d4c1ac98b902ab6b00741343"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga99d0b5bb80534d13a6cc96336cf9076a">av_get_channel_layout_string</a> (char *buf, int buf_size, int nb_channels, uint64_t channel_layout)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return a description of a channel layout. <a href="group__channel__mask__c.html#ga99d0b5bb80534d13a6cc96336cf9076a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga48cdbfac1bbb45835eae8bcdc9877b0e">av_bprint_channel_layout</a> (struct AVBPrint *bp, int nb_channels, uint64_t channel_layout)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Append a description of a channel layout to a bprint buffer. <a href="group__channel__mask__c.html#ga48cdbfac1bbb45835eae8bcdc9877b0e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gac95619abeb32e4a3daa18e3ff3419380">av_get_channel_layout_nb_channels</a> (uint64_t channel_layout)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the number of channels in the channel layout. <a href="group__channel__mask__c.html#gac95619abeb32e4a3daa18e3ff3419380"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gacb84f3e93a583e1f84a5283162a606a2">av_get_default_channel_layout</a> (int nb_channels)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return default channel layout for a given number of channels. <a href="group__channel__mask__c.html#gacb84f3e93a583e1f84a5283162a606a2"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga0669978493902b5ae723e386013da3ce">av_get_channel_layout_channel_index</a> (uint64_t channel_layout, uint64_t channel)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the index of a channel in channel_layout. <a href="group__channel__mask__c.html#ga0669978493902b5ae723e386013da3ce"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint64_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gaf492843360fb4ecee6b5ec4166b04fcd">av_channel_layout_extract_channel</a> (uint64_t channel_layout, int index)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the channel with the given index in channel_layout. <a href="group__channel__mask__c.html#gaf492843360fb4ecee6b5ec4166b04fcd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gaf9a5e23a9bbf5909f2dc84b25d78e35e">av_get_channel_name</a> (uint64_t channel)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the name of a given channel. <a href="group__channel__mask__c.html#gaf9a5e23a9bbf5909f2dc84b25d78e35e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#gade4b74b99e3fb954b88b0cb8eddb785a">av_get_channel_description</a> (uint64_t channel)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the description of a given channel. <a href="group__channel__mask__c.html#gade4b74b99e3fb954b88b0cb8eddb785a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__channel__mask__c.html#ga00447bfae43d690f1f549a9e2521bf85">av_get_standard_channel_layout</a> (unsigned index, uint64_t *layout, const char **name)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the value and name of a standard channel layout. <a href="group__channel__mask__c.html#ga00447bfae43d690f1f549a9e2521bf85"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>audio channel layout utility functions </p>
<p>Definition in file <a class="el" href="channel__layout_8h_source.html">channel_layout.h</a>.</p>
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