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 <span id="projectnumber">2.7.1</span>
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<a href="#groups">Modules</a> |
<a href="#define-members">Defines</a> |
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">Logging Facility</div> </div>
<div class="ingroups"><a class="el" href="group__lavu.html">Common utility functions</a></div></div><!--header-->
<div class="contents">
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="groups"></a>
Modules</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log__constants.html">Logging Constants</a></td></tr>
<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__lavu__log.html#ga7ff5a41a9e5e2969f1b125d4bb6ce536">AV_LOG_C</a>(x)   ((x) << 8)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Sets additional colors for extended debugging sessions. <a href="#ga7ff5a41a9e5e2969f1b125d4bb6ce536"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#ga6cdf5cd331b17e80e8308124f05a6db8">AV_LOG_SKIP_REPEATED</a>   1</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Skip repeated messages, this requires the user app to use <a class="el" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae" title="Send the specified message to the log if the level is less than or equal to the current av_log_level...">av_log()</a> instead of (f)printf as the 2 would otherwise interfere and lead to "Last message repeated x times" messages below (f)printf messages with some bad luck. <a href="#ga6cdf5cd331b17e80e8308124f05a6db8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#ga8b447fa5f9d7e243be4634878ed1a0ca">AV_LOG_PRINT_LEVEL</a>   2</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Include the log severity in messages originating from codecs. <a href="#ga8b447fa5f9d7e243be4634878ed1a0ca"></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">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a> (void *avcl, int level, const char *fmt,...) <a class="el" href="attributes_8h.html#a4b078d4b8e02c0f452ee1dcaa7d983d3">av_printf_format</a>(3</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Send the specified message to the log if the level is less than or equal to the current av_log_level. <a href="#gabd386ffd4b27637cf34e98d5d1a6e8ae"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#ga6d72fb598cff2c8385069a1fc2ee5812">av_vlog</a> (void *avcl, int level, const char *fmt, va_list vl)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Send the specified message to the log if the level is less than or equal to the current av_log_level. <a href="#ga6d72fb598cff2c8385069a1fc2ee5812"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#gae8ada5cc5722548d8698650b05207904">av_log_get_level</a> (void)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Get the current log level. <a href="#gae8ada5cc5722548d8698650b05207904"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#ga1fd32c74db581e3e2e7f35d277bb1e24">av_log_set_level</a> (int level)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the log level. <a href="#ga1fd32c74db581e3e2e7f35d277bb1e24"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#ga14034761faf581a8b9ed6ef19b313708">av_log_set_callback</a> (void(*callback)(void *, int, const char *, va_list))</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the logging callback. <a href="#ga14034761faf581a8b9ed6ef19b313708"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#ga5bd132d2e4ac6f9843ef6d8e3c05050a">av_log_default_callback</a> (void *avcl, int level, const char *fmt, va_list vl)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Default logging callback. <a href="#ga5bd132d2e4ac6f9843ef6d8e3c05050a"></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__lavu__log.html#ga791fcd0dba1d19fe0c3677509344328e">av_default_item_name</a> (void *ctx)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the context name. <a href="#ga791fcd0dba1d19fe0c3677509344328e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="log_8h.html#aeb1c06cc3e47a029ca6afeac782ac8f9">AVClassCategory</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#ga796896ca6a991fda200e8363777aeea3">av_default_get_category</a> (void *ptr)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#gaed9e57ccba2adc41864f54f47dfcccec">av_log_format_line</a> (void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Format a line of log the same way as the default callback. <a href="#gaed9e57ccba2adc41864f54f47dfcccec"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#gaf8143cc9a7cd364af1ff525c6181c0ce">av_log_set_flags</a> (int arg)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="group__lavu__log.html#ga86a29f38fba2fdb9579d5fa3bbf6f8bf">av_log_get_flags</a> (void)</td></tr>
</table>
<hr/><h2>Define Documentation</h2>
<a class="anchor" id="ga7ff5a41a9e5e2969f1b125d4bb6ce536"></a><!-- doxytag: member="log.h::AV_LOG_C" ref="ga7ff5a41a9e5e2969f1b125d4bb6ce536" args="(x)" -->
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<td class="memname">#define <a class="el" href="group__lavu__log.html#ga7ff5a41a9e5e2969f1b125d4bb6ce536">AV_LOG_C</a></td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">x</td><td>)</td>
<td>   ((x) << 8)</td>
</tr>
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<div class="memdoc">
<p>Sets additional colors for extended debugging sessions. </p>
<div class="fragment"><pre class="fragment"> <a class="code" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae" title="Send the specified message to the log if the level is less than or equal to the current av_log_level...">av_log</a>(ctx, <a class="code" href="group__lavu__log__constants.html#ga5b7221c3afd06848486776bd834a58a5" title="Stuff which is only useful for libav* developers.">AV_LOG_DEBUG</a>|<a class="code" href="group__lavu__log.html#ga7ff5a41a9e5e2969f1b125d4bb6ce536" title="Sets additional colors for extended debugging sessions.">AV_LOG_C</a>(134), <span class="stringliteral">"Message in purple\n"</span>);
</pre></div><p> Requires 256color terminal support. Uses outside debugging is not recommended. </p>
<p>Definition at line <a class="el" href="log_8h_source.html#l00218">218</a> of file <a class="el" href="log_8h_source.html">log.h</a>.</p>
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<a class="anchor" id="ga6cdf5cd331b17e80e8308124f05a6db8"></a><!-- doxytag: member="log.h::AV_LOG_SKIP_REPEATED" ref="ga6cdf5cd331b17e80e8308124f05a6db8" args="" -->
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<td class="memname">#define <a class="el" href="group__lavu__log.html#ga6cdf5cd331b17e80e8308124f05a6db8">AV_LOG_SKIP_REPEATED</a>   1</td>
</tr>
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</div>
<div class="memdoc">
<p>Skip repeated messages, this requires the user app to use <a class="el" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae" title="Send the specified message to the log if the level is less than or equal to the current av_log_level...">av_log()</a> instead of (f)printf as the 2 would otherwise interfere and lead to "Last message repeated x times" messages below (f)printf messages with some bad luck. </p>
<p>Also to receive the last, "last repeated" line if any, the user app must call av_log(NULL, AV_LOG_QUIET, "%s", ""); at the end </p>
<p>Definition at line <a class="el" href="log_8h_source.html#l00342">342</a> of file <a class="el" href="log_8h_source.html">log.h</a>.</p>
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<a class="anchor" id="ga8b447fa5f9d7e243be4634878ed1a0ca"></a><!-- doxytag: member="log.h::AV_LOG_PRINT_LEVEL" ref="ga8b447fa5f9d7e243be4634878ed1a0ca" args="" -->
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<td class="memname">#define <a class="el" href="group__lavu__log.html#ga8b447fa5f9d7e243be4634878ed1a0ca">AV_LOG_PRINT_LEVEL</a>   2</td>
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<div class="memdoc">
<p>Include the log severity in messages originating from codecs. </p>
<p>Results in messages such as: [rawvideo @ 0xDEADBEEF] [error] encode did not produce valid pts </p>
<p>Definition at line <a class="el" href="log_8h_source.html#l00350">350</a> of file <a class="el" href="log_8h_source.html">log.h</a>.</p>
</div>
</div>
<hr/><h2>Function Documentation</h2>
<a class="anchor" id="gabd386ffd4b27637cf34e98d5d1a6e8ae"></a><!-- doxytag: member="log.h::av_log" ref="gabd386ffd4b27637cf34e98d5d1a6e8ae" args="(void *avcl, int level, const char *fmt,...) av_printf_format(3" -->
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<td class="memname">void <a class="el" href="group__lavu__log.html#gabd386ffd4b27637cf34e98d5d1a6e8ae">av_log</a> </td>
<td>(</td>
<td class="paramtype">void * </td>
<td class="paramname"><em>avcl</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>level</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>fmt</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"> </td>
<td class="paramname"><em>...</em> </td>
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<td>)</td>
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<p>Send the specified message to the log if the level is less than or equal to the current av_log_level. </p>
<p>By default, all logging messages are sent to stderr. This behavior can be altered by setting a different logging callback function. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group__lavu__log.html#ga14034761faf581a8b9ed6ef19b313708" title="Set the logging callback.">av_log_set_callback</a></dd></dl>
<dl class="params"><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">avcl</td><td>A pointer to an arbitrary struct of which the first field is a pointer to an <a class="el" href="structAVClass.html" title="Describe the class of an AVClass context structure.">AVClass</a> struct or NULL if general log. </td></tr>
<tr><td class="paramname">level</td><td>The importance level of the message expressed using a <a class="el" href="group__lavu__log__constants.html">Logging Constant</a>. </td></tr>
<tr><td class="paramname">fmt</td><td>The format string (printf-compatible) that specifies how subsequent arguments are converted to output. </td></tr>
</table>
</dd>
</dl>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="filter_audio_8c-example.html#a28">filter_audio.c</a>, <a class="el" href="filtering_audio_8c-example.html#a15">filtering_audio.c</a>, <a class="el" href="filtering_video_8c-example.html#a16">filtering_video.c</a>, and <a class="el" href="transcoding_8c-example.html#a12">transcoding.c</a>.</dd>
</dl>
<p>Referenced by <a class="el" href="transcoding_8c_source.html#l00366">encode_write_frame()</a>, <a class="el" href="transcoding_8c_source.html#l00402">filter_encode_write_frame()</a>, <a class="el" href="transcoding_8c_source.html#l00446">flush_encoder()</a>, <a class="el" href="transcoding_8c_source.html#l00187">init_filter()</a>, <a class="el" href="filter__audio_8c_source.html#l00062">init_filter_graph()</a>, <a class="el" href="filtering__audio_8c_source.html#l00085">init_filters()</a>, <a class="el" href="avio__list__dir_8c_source.html#l00057">main()</a>, <a class="el" href="filtering__audio_8c_source.html#l00051">open_input_file()</a>, and <a class="el" href="transcoding_8c_source.html#l00087">open_output_file()</a>.</p>
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<a class="anchor" id="ga6d72fb598cff2c8385069a1fc2ee5812"></a><!-- doxytag: member="log.h::av_vlog" ref="ga6d72fb598cff2c8385069a1fc2ee5812" args="(void *avcl, int level, const char *fmt, va_list vl)" -->
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<td class="memname">void void <a class="el" href="group__lavu__log.html#ga6d72fb598cff2c8385069a1fc2ee5812">av_vlog</a> </td>
<td>(</td>
<td class="paramtype">void * </td>
<td class="paramname"><em>avcl</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>level</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>fmt</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">va_list </td>
<td class="paramname"><em>vl</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<div class="memdoc">
<p>Send the specified message to the log if the level is less than or equal to the current av_log_level. </p>
<p>By default, all logging messages are sent to stderr. This behavior can be altered by setting a different logging callback function. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group__lavu__log.html#ga14034761faf581a8b9ed6ef19b313708" title="Set the logging callback.">av_log_set_callback</a></dd></dl>
<dl class="params"><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">avcl</td><td>A pointer to an arbitrary struct of which the first field is a pointer to an <a class="el" href="structAVClass.html" title="Describe the class of an AVClass context structure.">AVClass</a> struct. </td></tr>
<tr><td class="paramname">level</td><td>The importance level of the message expressed using a <a class="el" href="group__lavu__log__constants.html">Logging Constant</a>. </td></tr>
<tr><td class="paramname">fmt</td><td>The format string (printf-compatible) that specifies how subsequent arguments are converted to output. </td></tr>
<tr><td class="paramname">vl</td><td>The arguments referenced by the format string. </td></tr>
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</dd>
</dl>
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<a class="anchor" id="gae8ada5cc5722548d8698650b05207904"></a><!-- doxytag: member="log.h::av_log_get_level" ref="gae8ada5cc5722548d8698650b05207904" args="(void)" -->
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<td class="memname">int <a class="el" href="group__lavu__log.html#gae8ada5cc5722548d8698650b05207904">av_log_get_level</a> </td>
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<p>Get the current log level. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group__lavu__log__constants.html">Logging Constants</a></dd></dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>Current log level </dd></dl>
</div>
</div>
<a class="anchor" id="ga1fd32c74db581e3e2e7f35d277bb1e24"></a><!-- doxytag: member="log.h::av_log_set_level" ref="ga1fd32c74db581e3e2e7f35d277bb1e24" args="(int level)" -->
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<td class="memname">void <a class="el" href="group__lavu__log.html#ga1fd32c74db581e3e2e7f35d277bb1e24">av_log_set_level</a> </td>
<td>(</td>
<td class="paramtype">int </td>
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<p>Set the log level. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group__lavu__log__constants.html">Logging Constants</a></dd></dl>
<dl class="params"><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">level</td><td>Logging level </td></tr>
</table>
</dd>
</dl>
<p>Referenced by <a class="el" href="avio__list__dir_8c_source.html#l00057">main()</a>.</p>
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<a class="anchor" id="ga14034761faf581a8b9ed6ef19b313708"></a><!-- doxytag: member="log.h::av_log_set_callback" ref="ga14034761faf581a8b9ed6ef19b313708" args="(void(*callback)(void *, int, const char *, va_list))" -->
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<td class="memname">void <a class="el" href="group__lavu__log.html#ga14034761faf581a8b9ed6ef19b313708">av_log_set_callback</a> </td>
<td>(</td>
<td class="paramtype">void(*)(void *, int, const char *, va_list) </td>
<td class="paramname"><em>callback</em></td><td>)</td>
<td></td>
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<p>Set the logging callback. </p>
<dl class="note"><dt><b>Note:</b></dt><dd>The callback must be thread safe, even if the application does not use threads itself as some codecs are multithreaded.</dd></dl>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group__lavu__log.html#ga5bd132d2e4ac6f9843ef6d8e3c05050a" title="Default logging callback.">av_log_default_callback</a></dd></dl>
<dl class="params"><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">callback</td><td>A logging function with a compatible signature. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga5bd132d2e4ac6f9843ef6d8e3c05050a"></a><!-- doxytag: member="log.h::av_log_default_callback" ref="ga5bd132d2e4ac6f9843ef6d8e3c05050a" args="(void *avcl, int level, const char *fmt, va_list vl)" -->
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<td class="memname">void <a class="el" href="group__lavu__log.html#ga5bd132d2e4ac6f9843ef6d8e3c05050a">av_log_default_callback</a> </td>
<td>(</td>
<td class="paramtype">void * </td>
<td class="paramname"><em>avcl</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>level</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>fmt</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">va_list </td>
<td class="paramname"><em>vl</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<div class="memdoc">
<p>Default logging callback. </p>
<p>It prints the message to stderr, optionally colorizing it.</p>
<dl class="params"><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">avcl</td><td>A pointer to an arbitrary struct of which the first field is a pointer to an <a class="el" href="structAVClass.html" title="Describe the class of an AVClass context structure.">AVClass</a> struct. </td></tr>
<tr><td class="paramname">level</td><td>The importance level of the message expressed using a <a class="el" href="group__lavu__log__constants.html">Logging Constant</a>. </td></tr>
<tr><td class="paramname">fmt</td><td>The format string (printf-compatible) that specifies how subsequent arguments are converted to output. </td></tr>
<tr><td class="paramname">vl</td><td>The arguments referenced by the format string. </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="ga791fcd0dba1d19fe0c3677509344328e"></a><!-- doxytag: member="log.h::av_default_item_name" ref="ga791fcd0dba1d19fe0c3677509344328e" args="(void *ctx)" -->
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<td class="memname">const char* <a class="el" href="group__lavu__log.html#ga791fcd0dba1d19fe0c3677509344328e">av_default_item_name</a> </td>
<td>(</td>
<td class="paramtype">void * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Return the context name. </p>
<dl class="params"><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>The <a class="el" href="structAVClass.html" title="Describe the class of an AVClass context structure.">AVClass</a> context</td></tr>
</table>
</dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>The <a class="el" href="structAVClass.html" title="Describe the class of an AVClass context structure.">AVClass</a> class_name </dd></dl>
</div>
</div>
<a class="anchor" id="ga796896ca6a991fda200e8363777aeea3"></a><!-- doxytag: member="log.h::av_default_get_category" ref="ga796896ca6a991fda200e8363777aeea3" args="(void *ptr)" -->
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<td class="memname"><a class="el" href="log_8h.html#aeb1c06cc3e47a029ca6afeac782ac8f9">AVClassCategory</a> <a class="el" href="group__lavu__log.html#ga796896ca6a991fda200e8363777aeea3">av_default_get_category</a> </td>
<td>(</td>
<td class="paramtype">void * </td>
<td class="paramname"><em>ptr</em></td><td>)</td>
<td></td>
</tr>
</table>
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<div class="memdoc">
</div>
</div>
<a class="anchor" id="gaed9e57ccba2adc41864f54f47dfcccec"></a><!-- doxytag: member="log.h::av_log_format_line" ref="gaed9e57ccba2adc41864f54f47dfcccec" args="(void *ptr, int level, const char *fmt, va_list vl, char *line, int line_size, int *print_prefix)" -->
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<td class="memname">void <a class="el" href="group__lavu__log.html#gaed9e57ccba2adc41864f54f47dfcccec">av_log_format_line</a> </td>
<td>(</td>
<td class="paramtype">void * </td>
<td class="paramname"><em>ptr</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>level</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const char * </td>
<td class="paramname"><em>fmt</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">va_list </td>
<td class="paramname"><em>vl</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">char * </td>
<td class="paramname"><em>line</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>line_size</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int * </td>
<td class="paramname"><em>print_prefix</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
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<p>Format a line of log the same way as the default callback. </p>
<dl class="params"><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramname">line</td><td>buffer to receive the formatted line </td></tr>
<tr><td class="paramname">line_size</td><td>size of the buffer </td></tr>
<tr><td class="paramname">print_prefix</td><td>used to store whether the prefix must be printed; must point to a persistent integer initially set to 1 </td></tr>
</table>
</dd>
</dl>
</div>
</div>
<a class="anchor" id="gaf8143cc9a7cd364af1ff525c6181c0ce"></a><!-- doxytag: member="log.h::av_log_set_flags" ref="gaf8143cc9a7cd364af1ff525c6181c0ce" args="(int arg)" -->
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<td class="memname">void <a class="el" href="group__lavu__log.html#gaf8143cc9a7cd364af1ff525c6181c0ce">av_log_set_flags</a> </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"><em>arg</em></td><td>)</td>
<td></td>
</tr>
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</div>
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<a class="anchor" id="ga86a29f38fba2fdb9579d5fa3bbf6f8bf"></a><!-- doxytag: member="log.h::av_log_get_flags" ref="ga86a29f38fba2fdb9579d5fa3bbf6f8bf" args="(void)" -->
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<td class="memname">int <a class="el" href="group__lavu__log.html#ga86a29f38fba2fdb9579d5fa3bbf6f8bf">av_log_get_flags</a> </td>
<td>(</td>
<td class="paramtype">void </td>
<td class="paramname"></td><td>)</td>
<td></td>
</tr>
</table>
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