docs/gst/html/gstreamer-GstInfo.html - mtk-gstreamer-debian - Git at Google

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 <html>
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 <title>GstInfo: GStreamer 1.0 Core Reference Manual</title>
 <meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
 <link rel="home" href="index.html" title="GStreamer 1.0 Core Reference Manual">
 <link rel="up" href="gstreamer-support.html" title="GStreamer Core Support">
 <link rel="prev" href="gstreamer-support.html" title="GStreamer Core Support">
 <link rel="next" href="GstTracer.html" title="GstTracer">
 <meta name="generator" content="GTK-Doc V1.25 (XML mode)">
 <link rel="stylesheet" href="style.css" type="text/css">
 </head>
 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
 <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
 <td width="100%" align="left" class="shortcuts">
 <a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span>
                   <a href="#gstreamer-GstInfo.description" class="shortcut">Description</a></span>
 </td>
 <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
 <td><a accesskey="u" href="gstreamer-support.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
 <td><a accesskey="p" href="gstreamer-support.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
 <td><a accesskey="n" href="GstTracer.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
 </tr></table>
 <div class="refentry">
 <a name="gstreamer-GstInfo"></a><div class="titlepage"></div>
 <div class="refnamediv"><table width="100%"><tr>
 <td valign="top">
 <h2><span class="refentrytitle"><a name="gstreamer-GstInfo.top_of_page"></a>GstInfo</span></h2>
 <p>GstInfo — Debugging and logging facilities</p>
 </td>
 <td class="gallery_image" valign="top" align="right"></td>
 </tr></table></div>
 <div class="refsect1">
 <a name="gstreamer-GstInfo.functions"></a><h2>Functions</h2>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="functions_return">
 <col class="functions_name">
 </colgroup>
 <tbody>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-STR-NULL:CAPS" title="GST_STR_NULL()">GST_STR_NULL</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-PAD-NAME:CAPS" title="GST_DEBUG_PAD_NAME()">GST_DEBUG_PAD_NAME</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <span class="c_punctuation">(</span><a class="link" href="gstreamer-GstInfo.html#GstLogFunction" title="GstLogFunction ()">*GstLogFunction</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-log" title="gst_debug_log ()">gst_debug_log</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-log-valist" title="gst_debug_log_valist ()">gst_debug_log_valist</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-message-get" title="gst_debug_message_get ()">gst_debug_message_get</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-log-default" title="gst_debug_log_default ()">gst_debug_log_default</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-level-get-name" title="gst_debug_level_get_name ()">gst_debug_level_get_name</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-add-log-function" title="gst_debug_add_log_function ()">gst_debug_add_log_function</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-remove-log-function" title="gst_debug_remove_log_function ()">gst_debug_remove_log_function</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-remove-log-function-by-data" title="gst_debug_remove_log_function_by_data ()">gst_debug_remove_log_function_by_data</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-set-active" title="gst_debug_set_active ()">gst_debug_set_active</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-is-active" title="gst_debug_is_active ()">gst_debug_is_active</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-set-colored" title="gst_debug_set_colored ()">gst_debug_set_colored</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-set-color-mode" title="gst_debug_set_color_mode ()">gst_debug_set_color_mode</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-set-color-mode-from-string" title="gst_debug_set_color_mode_from_string ()">gst_debug_set_color_mode_from_string</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-is-colored" title="gst_debug_is_colored ()">gst_debug_is_colored</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a class="link" href="gstreamer-GstInfo.html#GstDebugColorMode" title="enum GstDebugColorMode"><span class="returnvalue">GstDebugColorMode</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-get-color-mode" title="gst_debug_get_color_mode ()">gst_debug_get_color_mode</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-set-default-threshold" title="gst_debug_set_default_threshold ()">gst_debug_set_default_threshold</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-set-threshold-from-string" title="gst_debug_set_threshold_from_string ()">gst_debug_set_threshold_from_string</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="returnvalue">GstDebugLevel</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-get-default-threshold" title="gst_debug_get_default_threshold ()">gst_debug_get_default_threshold</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-set-threshold-for-name" title="gst_debug_set_threshold_for_name ()">gst_debug_set_threshold_for_name</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-unset-threshold-for-name" title="gst_debug_unset_threshold_for_name ()">gst_debug_unset_threshold_for_name</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY:CAPS" title="GST_DEBUG_CATEGORY()">GST_DEBUG_CATEGORY</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-EXTERN:CAPS" title="GST_DEBUG_CATEGORY_EXTERN()">GST_DEBUG_CATEGORY_EXTERN</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-STATIC:CAPS" title="GST_DEBUG_CATEGORY_STATIC()">GST_DEBUG_CATEGORY_STATIC</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-INIT:CAPS" title="GST_DEBUG_CATEGORY_INIT()">GST_DEBUG_CATEGORY_INIT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-GET:CAPS" title="GST_DEBUG_CATEGORY_GET()">GST_DEBUG_CATEGORY_GET</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-category-free" title="gst_debug_category_free ()">gst_debug_category_free</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-category-set-threshold" title="gst_debug_category_set_threshold ()">gst_debug_category_set_threshold</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-category-reset-threshold" title="gst_debug_category_reset_threshold ()">gst_debug_category_reset_threshold</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="returnvalue">GstDebugLevel</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-category-get-threshold" title="gst_debug_category_get_threshold ()">gst_debug_category_get_threshold</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-category-get-name" title="gst_debug_category_get_name ()">gst_debug_category_get_name</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-category-get-color" title="gst_debug_category_get_color ()">gst_debug_category_get_color</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-category-get-description" title="gst_debug_category_get_description ()">gst_debug_category_get_description</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Singly-Linked-Lists.html#GSList"><span class="returnvalue">GSList</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-get-all-categories" title="gst_debug_get_all_categories ()">gst_debug_get_all_categories</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-construct-term-color" title="gst_debug_construct_term_color ()">gst_debug_construct_term_color</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-construct-win-color" title="gst_debug_construct_win_color ()">gst_debug_construct_win_color</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-LEVEL-LOG:CAPS" title="GST_CAT_LEVEL_LOG()">GST_CAT_LEVEL_LOG</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-ERROR-OBJECT:CAPS" title="GST_CAT_ERROR_OBJECT()">GST_CAT_ERROR_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-WARNING-OBJECT:CAPS" title="GST_CAT_WARNING_OBJECT()">GST_CAT_WARNING_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-INFO-OBJECT:CAPS" title="GST_CAT_INFO_OBJECT()">GST_CAT_INFO_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-DEBUG-OBJECT:CAPS" title="GST_CAT_DEBUG_OBJECT()">GST_CAT_DEBUG_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-LOG-OBJECT:CAPS" title="GST_CAT_LOG_OBJECT()">GST_CAT_LOG_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-FIXME-OBJECT:CAPS" title="GST_CAT_FIXME_OBJECT()">GST_CAT_FIXME_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-TRACE-OBJECT:CAPS" title="GST_CAT_TRACE_OBJECT()">GST_CAT_TRACE_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-MEMDUMP-OBJECT:CAPS" title="GST_CAT_MEMDUMP_OBJECT()">GST_CAT_MEMDUMP_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-ERROR:CAPS" title="GST_CAT_ERROR()">GST_CAT_ERROR</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-WARNING:CAPS" title="GST_CAT_WARNING()">GST_CAT_WARNING</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-INFO:CAPS" title="GST_CAT_INFO()">GST_CAT_INFO</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-DEBUG:CAPS" title="GST_CAT_DEBUG()">GST_CAT_DEBUG</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-LOG:CAPS" title="GST_CAT_LOG()">GST_CAT_LOG</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-FIXME:CAPS" title="GST_CAT_FIXME()">GST_CAT_FIXME</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-TRACE:CAPS" title="GST_CAT_TRACE()">GST_CAT_TRACE</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-MEMDUMP:CAPS" title="GST_CAT_MEMDUMP()">GST_CAT_MEMDUMP</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-ERROR-OBJECT:CAPS" title="GST_ERROR_OBJECT()">GST_ERROR_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-WARNING-OBJECT:CAPS" title="GST_WARNING_OBJECT()">GST_WARNING_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-INFO-OBJECT:CAPS" title="GST_INFO_OBJECT()">GST_INFO_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-OBJECT:CAPS" title="GST_DEBUG_OBJECT()">GST_DEBUG_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-LOG-OBJECT:CAPS" title="GST_LOG_OBJECT()">GST_LOG_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-FIXME-OBJECT:CAPS" title="GST_FIXME_OBJECT()">GST_FIXME_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-TRACE-OBJECT:CAPS" title="GST_TRACE_OBJECT()">GST_TRACE_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-MEMDUMP-OBJECT:CAPS" title="GST_MEMDUMP_OBJECT()">GST_MEMDUMP_OBJECT</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-ERROR:CAPS" title="GST_ERROR()">GST_ERROR</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-WARNING:CAPS" title="GST_WARNING()">GST_WARNING</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-INFO:CAPS" title="GST_INFO()">GST_INFO</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG:CAPS" title="GST_DEBUG()">GST_DEBUG</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-LOG:CAPS" title="GST_LOG()">GST_LOG</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-FIXME:CAPS" title="GST_FIXME()">GST_FIXME</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-TRACE:CAPS" title="GST_TRACE()">GST_TRACE</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-MEMDUMP:CAPS" title="GST_MEMDUMP()">GST_MEMDUMP</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-REGISTER-FUNCPTR:CAPS" title="GST_DEBUG_REGISTER_FUNCPTR()">GST_DEBUG_REGISTER_FUNCPTR</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-FUNCPTR:CAPS" title="GST_DEBUG_FUNCPTR()">GST_DEBUG_FUNCPTR</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-FUNCPTR-NAME:CAPS" title="GST_DEBUG_FUNCPTR_NAME()">GST_DEBUG_FUNCPTR_NAME</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-BIN-TO-DOT-FILE:CAPS" title="GST_DEBUG_BIN_TO_DOT_FILE()">GST_DEBUG_BIN_TO_DOT_FILE</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-BIN-TO-DOT-FILE-WITH-TS:CAPS" title="GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS()">GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-print-stack-trace" title="gst_debug_print_stack_trace ()">gst_debug_print_stack_trace</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-TIME-ARGS:CAPS" title="GST_TIME_ARGS()">GST_TIME_ARGS</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#GST-STIME-ARGS:CAPS" title="GST_STIME_ARGS()">GST_STIME_ARGS</a><span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-bin-to-dot-data" title="gst_debug_bin_to_dot_data ()">gst_debug_bin_to_dot_data</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-bin-to-dot-file" title="gst_debug_bin_to_dot_file ()">gst_debug_bin_to_dot_file</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <span class="returnvalue">void</span>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-bin-to-dot-file-with-ts" title="gst_debug_bin_to_dot_file_with_ts ()">gst_debug_bin_to_dot_file_with_ts</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-info-vasprintf" title="gst_info_vasprintf ()">gst_info_vasprintf</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-info-strdup-vprintf" title="gst_info_strdup_vprintf ()">gst_info_strdup_vprintf</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 <tr>
 <td class="function_type">
 <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 </td>
 <td class="function_name">
 <a class="link" href="gstreamer-GstInfo.html#gst-info-strdup-printf" title="gst_info_strdup_printf ()">gst_info_strdup_printf</a> <span class="c_punctuation">()</span>
 </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <div class="refsect1">
 <a name="gstreamer-GstInfo.other"></a><h2>Types and Values</h2>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="name">
 <col class="description">
 </colgroup>
 <tbody>
 <tr>
 <td class="datatype_keyword">enum</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel">GstDebugLevel</a></td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GST-LEVEL-DEFAULT:CAPS" title="GST_LEVEL_DEFAULT">GST_LEVEL_DEFAULT</a></td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GST-LEVEL-MAX:CAPS" title="GST_LEVEL_MAX">GST_LEVEL_MAX</a></td>
 </tr>
 <tr>
 <td class="datatype_keyword">enum</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GstDebugColorFlags" title="enum GstDebugColorFlags">GstDebugColorFlags</a></td>
 </tr>
 <tr>
 <td class="datatype_keyword">enum</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GstDebugColorMode" title="enum GstDebugColorMode">GstDebugColorMode</a></td>
 </tr>
 <tr>
 <td class="datatype_keyword">struct</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory">GstDebugCategory</a></td>
 </tr>
 <tr>
 <td class="datatype_keyword">enum</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GstDebugGraphDetails" title="enum GstDebugGraphDetails">GstDebugGraphDetails</a></td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GST-FUNCTION:CAPS" title="GST_FUNCTION">GST_FUNCTION</a></td>
 </tr>
 <tr>
 <td class="variable_type">extern</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GST-CAT-DEFAULT:CAPS" title="GST_CAT_DEFAULT">GST_CAT_DEFAULT</a></td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GST-TIME-FORMAT:CAPS" title="GST_TIME_FORMAT">GST_TIME_FORMAT</a></td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GST-STIME-FORMAT:CAPS" title="GST_STIME_FORMAT">GST_STIME_FORMAT</a></td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GST-PTR-FORMAT:CAPS" title="GST_PTR_FORMAT">GST_PTR_FORMAT</a></td>
 </tr>
 <tr>
 <td class="define_keyword">#define</td>
 <td class="function_name"><a class="link" href="gstreamer-GstInfo.html#GST-SEGMENT-FORMAT:CAPS" title="GST_SEGMENT_FORMAT">GST_SEGMENT_FORMAT</a></td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <div class="refsect1">
 <a name="gstreamer-GstInfo.includes"></a><h2>Includes</h2>
 <pre class="synopsis">#include &lt;gst/gst.h&gt;
 </pre>
 </div>
 <div class="refsect1">
 <a name="gstreamer-GstInfo.description"></a><h2>Description</h2>
 <p>GStreamer's debugging subsystem is an easy way to get information about what
 the application is doing.  It is not meant for programming errors. Use GLib
 methods (g_warning and friends) for that.</p>
 <p>The debugging subsystem works only after GStreamer has been initialized</p>
 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>for example by calling <a class="link" href="gstreamer-Gst.html#gst-init" title="gst_init ()"><code class="function">gst_init()</code></a>.</p></li></ul></div>
 <p>The debugging subsystem is used to log informational messages while the
 application runs.  Each messages has some properties attached to it. Among
 these properties are the debugging category, the severity (called "level"
 here) and an optional <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> it belongs to. Each of these messages is sent
 to all registered debugging handlers, which then handle the messages.
 GStreamer attaches a default handler on startup, which outputs requested
 messages to stderr.</p>
 <p>Messages are output by using shortcut macros like <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG:CAPS" title="GST_DEBUG()"><span class="type">GST_DEBUG</span></a>,
 <a class="link" href="gstreamer-GstInfo.html#GST-CAT-ERROR-OBJECT:CAPS" title="GST_CAT_ERROR_OBJECT()"><span class="type">GST_CAT_ERROR_OBJECT</span></a> or similar. These all expand to calling <a class="link" href="gstreamer-GstInfo.html#gst-debug-log" title="gst_debug_log ()"><code class="function">gst_debug_log()</code></a>
 with the right parameters.
 The only thing a developer will probably want to do is define his own
 categories. This is easily done with 3 lines. At the top of your code,
 declare
 the variables and set the default category.</p>
 <div class="informalexample">
   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
     <tbody>
       <tr>
         <td class="listing_lines" align="right"><pre>1
 2</pre></td>
         <td class="listing_code"><pre class="programlisting"><span class="function"><a href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-STATIC:CAPS">GST_DEBUG_CATEGORY_STATIC</a></span> <span class="gtkdoc opt">(</span>my_category<span class="gtkdoc opt">);</span>  <span class="gtkdoc slc">// define category (statically)</span>
 <span class="gtkdoc ppc">#define GST_CAT_DEFAULT my_category</span>       <span class="gtkdoc slc">// set as default</span><span class="gtkdoc ppc"></span></pre></td>
       </tr>
     </tbody>
   </table>
 </div>

 <p>
 After that you only need to initialize the category.</p>
 <div class="informalexample">
   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
     <tbody>
       <tr>
         <td class="listing_lines" align="right"><pre>1
 2</pre></td>
         <td class="listing_code"><pre class="programlisting"><span class="function"><a href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-INIT:CAPS">GST_DEBUG_CATEGORY_INIT</a></span> <span class="gtkdoc opt">(</span>my_category<span class="gtkdoc opt">,</span> <span class="string">&quot;my category&quot;</span><span class="gtkdoc opt">,</span>
                          <span class="number">0</span><span class="gtkdoc opt">,</span> <span class="string">&quot;This is my very own&quot;</span><span class="gtkdoc opt">);</span></pre></td>
       </tr>
     </tbody>
   </table>
 </div>

 <p>
 Initialization must be done before the category is used first.
 Plugins do this
 in their plugin_init function, libraries and applications should do that
 during their initialization.</p>
 <p>The whole debugging subsystem can be disabled at build time with passing the
 --disable-gst-debug switch to configure. If this is done, every function,
 macro and even structs described in this file evaluate to default values or
 nothing at all.
 So don't take addresses of these functions or use other tricks.
 If you must do that for some reason, there is still an option.
 If the debugging
 subsystem was compiled out, <a class="link" href="gstreamer-GstConfig.html#GST-DISABLE-GST-DEBUG:CAPS" title="GST_DISABLE_GST_DEBUG"><span class="type">GST_DISABLE_GST_DEBUG</span></a> is defined in
 &lt;gst/gst.h&gt;,
 so you can check that before doing your trick.
 Disabling the debugging subsystem will give you a slight (read: unnoticeable)
 speed increase and will reduce the size of your compiled code. The GStreamer
 library itself becomes around 10% smaller.</p>
 <p>Please note that there are naming conventions for the names of debugging
 categories. These are explained at <a class="link" href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-INIT:CAPS" title="GST_DEBUG_CATEGORY_INIT()"><code class="function">GST_DEBUG_CATEGORY_INIT()</code></a>.</p>
 </div>
 <div class="refsect1">
 <a name="gstreamer-GstInfo.functions_details"></a><h2>Functions</h2>
 <div class="refsect2">
 <a name="GST-STR-NULL:CAPS"></a><h3>GST_STR_NULL()</h3>
 <pre class="programlisting">#define GST_STR_NULL(str) ((str) ? (str) : "(NULL)")
 </pre>
 <p>Macro to use when a string must not be <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, but may be <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. If the string
 is <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, "(NULL)" is printed instead.
 In GStreamer printf string arguments may not be <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, because on some
 platforms (ie Solaris) the libc crashes in that case. This includes debugging
 strings.</p>
 <div class="refsect3">
 <a name="GST-STR-NULL.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>str</p></td>
 <td class="parameter_description"><p> The string to check. </p></td>
 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-DEBUG-PAD-NAME:CAPS"></a><h3>GST_DEBUG_PAD_NAME()</h3>
 <pre class="programlisting">#define             GST_DEBUG_PAD_NAME(pad)</pre>
 <p>Evaluates to 2 strings, that describe the pad. Often used in debugging
 statements.</p>
 <div class="refsect3">
 <a name="GST-DEBUG-PAD-NAME.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>pad</p></td>
 <td class="parameter_description"><p>The pad to debug.</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GstLogFunction"></a><h3>GstLogFunction ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 <span class="c_punctuation">(</span>*GstLogFunction<span class="c_punctuation">)</span> (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>,
                    <em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> level</code></em>,
                    <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *file</code></em>,
                    <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *function</code></em>,
                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a> line</code></em>,
                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> *object</code></em>,
                    <em class="parameter"><code><span class="type">GstDebugMessage</span> *message</code></em>,
                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
 <p>Function prototype for a logging function that can be registered with
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-add-log-function" title="gst_debug_add_log_function ()"><code class="function">gst_debug_add_log_function()</code></a>.
 Use G_GNUC_NO_INSTRUMENT on that function.</p>
 <div class="refsect3">
 <a name="GstLogFunction.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a></p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a></p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>file</p></td>
 <td class="parameter_description"><p>file name</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>function</p></td>
 <td class="parameter_description"><p>function name</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>line</p></td>
 <td class="parameter_description"><p>line number</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>object</p></td>
 <td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a></p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>message</p></td>
 <td class="parameter_description"><p>the message</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>user_data</p></td>
 <td class="parameter_description"><p>user data for the log function</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-log"></a><h3>gst_debug_log ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_log (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>,
                <em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> level</code></em>,
                <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *file</code></em>,
                <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *function</code></em>,
                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a> line</code></em>,
                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> *object</code></em>,
                <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *format</code></em>,
                <em class="parameter"><code>...</code></em>);</pre>
 <p>Logs the given message using the currently registered debugging handlers.</p>
 <div class="refsect3">
 <a name="gst-debug-log.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>category to log</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>level of the message is in</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>file</p></td>
 <td class="parameter_description"><p>the file that emitted the message, usually the __FILE__ identifier</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>function</p></td>
 <td class="parameter_description"><p>the function that emitted the message</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>line</p></td>
 <td class="parameter_description"><p>the line from that the message was emitted, usually __LINE__</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>object</p></td>
 <td class="parameter_description"><p> the object this message relates to,
 or <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if none. </p></td>
 <td class="parameter_annotations"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
 </tr>
 <tr>
 <td class="parameter_name"><p>format</p></td>
 <td class="parameter_description"><p>a printf style format string</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>optional arguments for the format</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-log-valist"></a><h3>gst_debug_log_valist ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_log_valist (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>,
                       <em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> level</code></em>,
                       <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *file</code></em>,
                       <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *function</code></em>,
                       <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a> line</code></em>,
                       <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> *object</code></em>,
                       <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *format</code></em>,
                       <em class="parameter"><code><span class="type">va_list</span> args</code></em>);</pre>
 <p>Logs the given message using the currently registered debugging handlers.</p>
 <div class="refsect3">
 <a name="gst-debug-log-valist.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>category to log</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>level of the message is in</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>file</p></td>
 <td class="parameter_description"><p>the file that emitted the message, usually the __FILE__ identifier</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>function</p></td>
 <td class="parameter_description"><p>the function that emitted the message</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>line</p></td>
 <td class="parameter_description"><p>the line from that the message was emitted, usually __LINE__</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>object</p></td>
 <td class="parameter_description"><p> the object this message relates to,
 or <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if none. </p></td>
 <td class="parameter_annotations"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
 </tr>
 <tr>
 <td class="parameter_name"><p>format</p></td>
 <td class="parameter_description"><p>a printf style format string</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>args</p></td>
 <td class="parameter_description"><p>optional arguments for the format</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-message-get"></a><h3>gst_debug_message_get ()</h3>
 <pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 gst_debug_message_get (<em class="parameter"><code><span class="type">GstDebugMessage</span> *message</code></em>);</pre>
 <p>Gets the string representation of a <span class="type">GstDebugMessage</span>. This function is used
 in debug handlers to extract the message.</p>
 <div class="refsect3">
 <a name="gst-debug-message-get.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>message</p></td>
 <td class="parameter_description"><p>a debug message</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-message-get.returns"></a><h4>Returns</h4>
 <p> the string representation of a <span class="type">GstDebugMessage</span>.</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-log-default"></a><h3>gst_debug_log_default ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_log_default (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>,
                        <em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> level</code></em>,
                        <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *file</code></em>,
                        <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *function</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a> line</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> *object</code></em>,
                        <em class="parameter"><code><span class="type">GstDebugMessage</span> *message</code></em>,
                        <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
 <p>The default logging handler used by GStreamer. Logging functions get called
 whenever a macro like GST_DEBUG or similar is used. By default this function
 is setup to output the message and additional info to stderr (or the log file
 specified via the GST_DEBUG_FILE environment variable) as received via
 <em class="parameter"><code>user_data</code></em>
 .</p>
 <p>You can add other handlers by using <a class="link" href="gstreamer-GstInfo.html#gst-debug-add-log-function" title="gst_debug_add_log_function ()"><code class="function">gst_debug_add_log_function()</code></a>.
 And you can remove this handler by calling
 gst_debug_remove_log_function(gst_debug_log_default);</p>
 <div class="refsect3">
 <a name="gst-debug-log-default.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>category to log</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>level of the message</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>file</p></td>
 <td class="parameter_description"><p>the file that emitted the message, usually the __FILE__ identifier</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>function</p></td>
 <td class="parameter_description"><p>the function that emitted the message</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>line</p></td>
 <td class="parameter_description"><p>the line from that the message was emitted, usually __LINE__</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>message</p></td>
 <td class="parameter_description"><p>the actual message</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>object</p></td>
 <td class="parameter_description"><p> the object this message relates to,
 or <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if none. </p></td>
 <td class="parameter_annotations"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
 </tr>
 <tr>
 <td class="parameter_name"><p>user_data</p></td>
 <td class="parameter_description"><p>the FILE* to log to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-level-get-name"></a><h3>gst_debug_level_get_name ()</h3>
 <pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 gst_debug_level_get_name (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> level</code></em>);</pre>
 <p>Get the string representation of a debugging level</p>
 <div class="refsect3">
 <a name="gst-debug-level-get-name.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>the level to get the name for</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-level-get-name.returns"></a><h4>Returns</h4>
 <p> the name</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-add-log-function"></a><h3>gst_debug_add_log_function ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_add_log_function (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstLogFunction" title="GstLogFunction ()"><span class="type">GstLogFunction</span></a> func</code></em>,
                             <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>,
                             <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> notify</code></em>);</pre>
 <p>Adds the logging function to the list of logging functions.
 Be sure to use <a href="/usr/share/gtk-doc/html/glibglib-Miscellaneous-Macros.html#G-GNUC-NO-INSTRUMENT:CAPS"><span class="type">G_GNUC_NO_INSTRUMENT</span></a> on that function, it is needed.</p>
 <div class="refsect3">
 <a name="gst-debug-add-log-function.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>func</p></td>
 <td class="parameter_description"><p>the function to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>user_data</p></td>
 <td class="parameter_description"><p>user data</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>notify</p></td>
 <td class="parameter_description"><p>called when <em class="parameter"><code>user_data</code></em>
 is not used anymore</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-remove-log-function"></a><h3>gst_debug_remove_log_function ()</h3>
 <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
 gst_debug_remove_log_function (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstLogFunction" title="GstLogFunction ()"><span class="type">GstLogFunction</span></a> func</code></em>);</pre>
 <p>Removes all registered instances of the given logging functions.</p>
 <div class="refsect3">
 <a name="gst-debug-remove-log-function.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>func</p></td>
 <td class="parameter_description"><p> the log function to remove. </p></td>
 <td class="parameter_annotations"><span class="annotation">[<acronym title="The callback is valid only during the call to the method."><span class="acronym">scope call</span></acronym>]</span></td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-remove-log-function.returns"></a><h4>Returns</h4>
 <p> How many instances of the function were removed</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-remove-log-function-by-data"></a><h3>gst_debug_remove_log_function_by_data ()</h3>
 <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
 gst_debug_remove_log_function_by_data (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> data</code></em>);</pre>
 <p>Removes all registered instances of log functions with the given user data.</p>
 <div class="refsect3">
 <a name="gst-debug-remove-log-function-by-data.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>data</p></td>
 <td class="parameter_description"><p>user data of the log function to remove</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-remove-log-function-by-data.returns"></a><h4>Returns</h4>
 <p> How many instances of the function were removed</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-set-active"></a><h3>gst_debug_set_active ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_set_active (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> active</code></em>);</pre>
 <p>If activated, debugging messages are sent to the debugging
 handlers.
 It makes sense to deactivate it for speed issues.</p>
 <div class="note"><p>This function is not threadsafe. It makes sense to only call it
 during initialization.</p></div>
 <div class="refsect3">
 <a name="gst-debug-set-active.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>active</p></td>
 <td class="parameter_description"><p>Whether to use debugging output or not</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-is-active"></a><h3>gst_debug_is_active ()</h3>
 <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
 gst_debug_is_active (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
 <p>Checks if debugging output is activated.</p>
 <div class="refsect3">
 <a name="gst-debug-is-active.returns"></a><h4>Returns</h4>
 <p> <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, if debugging is activated</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-set-colored"></a><h3>gst_debug_set_colored ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_set_colored (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> colored</code></em>);</pre>
 <p>Sets or unsets the use of coloured debugging output.
 Same as <a class="link" href="gstreamer-GstInfo.html#gst-debug-set-color-mode" title="gst_debug_set_color_mode ()"><code class="function">gst_debug_set_color_mode()</code></a> with the argument being
 being GST_DEBUG_COLOR_MODE_ON or GST_DEBUG_COLOR_MODE_OFF.</p>
 <p>This function may be called before <a class="link" href="gstreamer-Gst.html#gst-init" title="gst_init ()"><code class="function">gst_init()</code></a>.</p>
 <div class="refsect3">
 <a name="gst-debug-set-colored.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>colored</p></td>
 <td class="parameter_description"><p>Whether to use colored output or not</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-set-color-mode"></a><h3>gst_debug_set_color_mode ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_set_color_mode (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugColorMode" title="enum GstDebugColorMode"><span class="type">GstDebugColorMode</span></a> mode</code></em>);</pre>
 <p>Changes the coloring mode for debug output.</p>
 <p>This function may be called before <a class="link" href="gstreamer-Gst.html#gst-init" title="gst_init ()"><code class="function">gst_init()</code></a>.</p>
 <div class="refsect3">
 <a name="gst-debug-set-color-mode.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>mode</p></td>
 <td class="parameter_description"><p>The coloring mode for debug output. See <em class="parameter"><code>GstDebugColorMode</code></em>
 .</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-set-color-mode-from-string"></a><h3>gst_debug_set_color_mode_from_string ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_set_color_mode_from_string (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *mode</code></em>);</pre>
 <p>Changes the coloring mode for debug output.</p>
 <p>This function may be called before <a class="link" href="gstreamer-Gst.html#gst-init" title="gst_init ()"><code class="function">gst_init()</code></a>.</p>
 <div class="refsect3">
 <a name="gst-debug-set-color-mode-from-string.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>mode</p></td>
 <td class="parameter_description"><p>The coloring mode for debug output. One of the following:
 "on", "auto", "off", "disable", "unix".</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-is-colored"></a><h3>gst_debug_is_colored ()</h3>
 <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
 gst_debug_is_colored (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
 <p>Checks if the debugging output should be colored.</p>
 <div class="refsect3">
 <a name="gst-debug-is-colored.returns"></a><h4>Returns</h4>
 <p> <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, if the debug output should be colored.</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-get-color-mode"></a><h3>gst_debug_get_color_mode ()</h3>
 <pre class="programlisting"><a class="link" href="gstreamer-GstInfo.html#GstDebugColorMode" title="enum GstDebugColorMode"><span class="returnvalue">GstDebugColorMode</span></a>
 gst_debug_get_color_mode (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
 <p>Changes the coloring mode for debug output.</p>
 <div class="refsect3">
 <a name="gst-debug-get-color-mode.returns"></a><h4>Returns</h4>
 <p> see <em class="parameter"><code>GstDebugColorMode</code></em>
 for possible values.</p>
 </div>
 <p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-set-default-threshold"></a><h3>gst_debug_set_default_threshold ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_set_default_threshold (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> level</code></em>);</pre>
 <p>Sets the default threshold to the given level and updates all categories to
 use this threshold.</p>
 <p>This function may be called before <a class="link" href="gstreamer-Gst.html#gst-init" title="gst_init ()"><code class="function">gst_init()</code></a>.</p>
 <div class="refsect3">
 <a name="gst-debug-set-default-threshold.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>level to set</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-set-threshold-from-string"></a><h3>gst_debug_set_threshold_from_string ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_set_threshold_from_string (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *list</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> reset</code></em>);</pre>
 <p>Sets the debug logging wanted in the same form as with the GST_DEBUG
 environment variable. You can use wildcards such as '*', but note that
 the order matters when you use wild cards, e.g. "foosrc:6,*src:3,*:2" sets
 everything to log level 2.</p>
 <div class="refsect3">
 <a name="gst-debug-set-threshold-from-string.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>list</p></td>
 <td class="parameter_description"><p>comma-separated list of "category:level" pairs to be used
 as debug logging levels</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>reset</p></td>
 <td class="parameter_description"><p><a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> to clear all previously-set debug levels before setting
 new thresholds
 <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if adding the threshold described by <em class="parameter"><code>list</code></em>
 to the one already set.</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 <p class="since">Since: <a class="link" href="ix06.html#api-index-1.2">1.2</a></p>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-get-default-threshold"></a><h3>gst_debug_get_default_threshold ()</h3>
 <pre class="programlisting"><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="returnvalue">GstDebugLevel</span></a>
 gst_debug_get_default_threshold (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
 <p>Returns the default threshold that is used for new categories.</p>
 <div class="refsect3">
 <a name="gst-debug-get-default-threshold.returns"></a><h4>Returns</h4>
 <p> the default threshold level</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-set-threshold-for-name"></a><h3>gst_debug_set_threshold_for_name ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_set_threshold_for_name (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
                                   <em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> level</code></em>);</pre>
 <p>Sets all categories which match the given glob style pattern to the given
 level.</p>
 <div class="refsect3">
 <a name="gst-debug-set-threshold-for-name.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>name</p></td>
 <td class="parameter_description"><p>name of the categories to set</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>level to set them to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-unset-threshold-for-name"></a><h3>gst_debug_unset_threshold_for_name ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_unset_threshold_for_name (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
 <p>Resets all categories with the given name back to the default level.</p>
 <div class="refsect3">
 <a name="gst-debug-unset-threshold-for-name.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>name</p></td>
 <td class="parameter_description"><p>name of the categories to set</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-DEBUG-CATEGORY:CAPS"></a><h3>GST_DEBUG_CATEGORY()</h3>
 <pre class="programlisting">#define GST_DEBUG_CATEGORY(cat) GstDebugCategory *cat = NULL
 </pre>
 <p>Defines a GstDebugCategory variable.
 This macro expands to nothing if debugging is disabled.</p>
 <div class="refsect3">
 <a name="GST-DEBUG-CATEGORY.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>the category</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-DEBUG-CATEGORY-EXTERN:CAPS"></a><h3>GST_DEBUG_CATEGORY_EXTERN()</h3>
 <pre class="programlisting">#define GST_DEBUG_CATEGORY_EXTERN(cat) extern GstDebugCategory *cat
 </pre>
 <p>Declares a GstDebugCategory variable as extern. Use in header files.
 This macro expands to nothing if debugging is disabled.</p>
 <div class="refsect3">
 <a name="GST-DEBUG-CATEGORY-EXTERN.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>the category</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-DEBUG-CATEGORY-STATIC:CAPS"></a><h3>GST_DEBUG_CATEGORY_STATIC()</h3>
 <pre class="programlisting">#define GST_DEBUG_CATEGORY_STATIC(cat) static GstDebugCategory *cat = NULL
 </pre>
 <p>Defines a static GstDebugCategory variable.
 This macro expands to nothing if debugging is disabled.</p>
 <div class="refsect3">
 <a name="GST-DEBUG-CATEGORY-STATIC.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>the category</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-DEBUG-CATEGORY-INIT:CAPS"></a><h3>GST_DEBUG_CATEGORY_INIT()</h3>
 <pre class="programlisting">#define             GST_DEBUG_CATEGORY_INIT(cat,name,color,description)</pre>
 <p>Initializes a new <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> with the given properties and set to
 the default threshold.</p>
 <div class="note">
 <p>
 This macro expands to nothing if debugging is disabled.
 </p>
 <p>
 When naming your category, please follow the following conventions to ensure
 that the pattern matching for categories works as expected. It is not
 earth-shattering if you don't follow these conventions, but it would be nice
 for everyone.
 </p>
 <p>
 If you define a category for a plugin or a feature of it, name the category
 like the feature. So if you wanted to write a "filesrc" element, you would
 name the category "filesrc". Use lowercase letters only.
 If you define more than one category for the same element, append an
 underscore and an identifier to your categories, like this: "filesrc_cache"
 </p>
 <p>
 If you create a library or an application using debugging categories, use a
 common prefix followed by an underscore for all your categories. GStreamer
 uses the GST prefix so GStreamer categories look like "GST_STATES". Be sure
 to include uppercase letters.
 </p>
 </div>
 <div class="refsect3">
 <a name="GST-DEBUG-CATEGORY-INIT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>the category to initialize.</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>name</p></td>
 <td class="parameter_description"><p>the name of the category.</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>color</p></td>
 <td class="parameter_description"><p>the colors to use for a color representation or 0 for no color.</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>description</p></td>
 <td class="parameter_description"><p>optional description of the category.</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-DEBUG-CATEGORY-GET:CAPS"></a><h3>GST_DEBUG_CATEGORY_GET()</h3>
 <pre class="programlisting">#define             GST_DEBUG_CATEGORY_GET(cat,name)</pre>
 <p>Looks up an existing <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> by its <em class="parameter"><code>name</code></em>
  and sets <em class="parameter"><code>cat</code></em>
 . If the
 category is not found, but GST_CAT_DEFAULT is defined, that is assigned to
 <em class="parameter"><code>cat</code></em>
 . Otherwise <em class="parameter"><code>cat</code></em>
  will be <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
 <div class="informalexample">
   <table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
     <tbody>
       <tr>
         <td class="listing_lines" align="right"><pre>1
 2
 3
 4
 5
 6</pre></td>
         <td class="listing_code"><pre class="programlisting"><span class="function"><a href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-STATIC:CAPS">GST_DEBUG_CATEGORY_STATIC</a></span> <span class="gtkdoc opt">(</span>gst_myplugin_debug<span class="gtkdoc opt">);</span>
 <span class="gtkdoc ppc">#define GST_CAT_DEFAULT gst_myplugin_debug</span>
 <span class="function"><a href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-STATIC:CAPS">GST_DEBUG_CATEGORY_STATIC</a></span> <span class="gtkdoc opt">(</span>GST_CAT_PERFORMANCE<span class="gtkdoc opt">);</span>
 <span class="gtkdoc opt">...</span>
 <span class="function"><a href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-INIT:CAPS">GST_DEBUG_CATEGORY_INIT</a></span> <span class="gtkdoc opt">(</span>gst_myplugin_debug<span class="gtkdoc opt">,</span> <span class="string">&quot;myplugin&quot;</span><span class="gtkdoc opt">,</span> <span class="number">0</span><span class="gtkdoc opt">,</span> <span class="string">&quot;nice element&quot;</span><span class="gtkdoc opt">);</span>
 <span class="function"><a href="gstreamer-GstInfo.html#GST-DEBUG-CATEGORY-GET:CAPS">GST_DEBUG_CATEGORY_GET</a></span> <span class="gtkdoc opt">(</span>GST_CAT_PERFORMANCE<span class="gtkdoc opt">,</span> <span class="string">&quot;GST_PERFORMANCE&quot;</span><span class="gtkdoc opt">);</span></pre></td>
       </tr>
     </tbody>
   </table>
 </div>

 <p></p>
 <div class="refsect3">
 <a name="GST-DEBUG-CATEGORY-GET.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>the category to initialize.</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>name</p></td>
 <td class="parameter_description"><p>log category name</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-category-free"></a><h3>gst_debug_category_free ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_category_free (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>);</pre>
 <p>Removes and frees the category and all associated resources.</p>
 <div class="refsect3">
 <a name="gst-debug-category-free.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> to free.</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-category-set-threshold"></a><h3>gst_debug_category_set_threshold ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_category_set_threshold (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>,
                                   <em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> level</code></em>);</pre>
 <p>Sets the threshold of the category to the given level. Debug information will
 only be output if the threshold is lower or equal to the level of the
 debugging message.</p>
 <div class="note"><p>
 Do not use this function in production code, because other functions may
 change the threshold of categories as side effect. It is however a nice
 function to use when debugging (even from gdb).
 </p></div>
 <div class="refsect3">
 <a name="gst-debug-category-set-threshold.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> to set threshold of.</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>the <a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> threshold to set.</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-category-reset-threshold"></a><h3>gst_debug_category_reset_threshold ()</h3>
 <pre class="programlisting"><span class="returnvalue">void</span>
 gst_debug_category_reset_threshold (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>);</pre>
 <p>Resets the threshold of the category to the default level. Debug information
 will only be output if the threshold is lower or equal to the level of the
 debugging message.
 Use this function to set the threshold back to where it was after using
 <a class="link" href="gstreamer-GstInfo.html#gst-debug-category-set-threshold" title="gst_debug_category_set_threshold ()"><code class="function">gst_debug_category_set_threshold()</code></a>.</p>
 <div class="refsect3">
 <a name="gst-debug-category-reset-threshold.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> to reset threshold of.</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-category-get-threshold"></a><h3>gst_debug_category_get_threshold ()</h3>
 <pre class="programlisting"><a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="returnvalue">GstDebugLevel</span></a>
 gst_debug_category_get_threshold (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>);</pre>
 <p>Returns the threshold of a <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a>.</p>
 <div class="refsect3">
 <a name="gst-debug-category-get-threshold.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> to get threshold of.</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-category-get-threshold.returns"></a><h4>Returns</h4>
 <p> the <a class="link" href="gstreamer-GstInfo.html#GstDebugLevel" title="enum GstDebugLevel"><span class="type">GstDebugLevel</span></a> that is used as threshold.</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-category-get-name"></a><h3>gst_debug_category_get_name ()</h3>
 <pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 gst_debug_category_get_name (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>);</pre>
 <p>Returns the name of a debug category.</p>
 <div class="refsect3">
 <a name="gst-debug-category-get-name.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> to get name of.</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-category-get-name.returns"></a><h4>Returns</h4>
 <p> the name of the category.</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-category-get-color"></a><h3>gst_debug_category_get_color ()</h3>
 <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
 gst_debug_category_get_color (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>);</pre>
 <p>Returns the color of a debug category used when printing output in this
 category.</p>
 <div class="refsect3">
 <a name="gst-debug-category-get-color.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> to get the color of.</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-category-get-color.returns"></a><h4>Returns</h4>
 <p> the color of the category.</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-category-get-description"></a><h3>gst_debug_category_get_description ()</h3>
 <pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 gst_debug_category_get_description (<em class="parameter"><code><a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> *category</code></em>);</pre>
 <p>Returns the description of a debug category.</p>
 <div class="refsect3">
 <a name="gst-debug-category-get-description.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>category</p></td>
 <td class="parameter_description"><p>a <a class="link" href="gstreamer-GstInfo.html#GstDebugCategory" title="struct GstDebugCategory"><span class="type">GstDebugCategory</span></a> to get the description of.</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-category-get-description.returns"></a><h4>Returns</h4>
 <p> the description of the category.</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-get-all-categories"></a><h3>gst_debug_get_all_categories ()</h3>
 <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Singly-Linked-Lists.html#GSList"><span class="returnvalue">GSList</span></a> *
 gst_debug_get_all_categories (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
 <p>Returns a snapshot of a all categories that are currently in use . This list
 may change anytime.
 The caller has to free the list after use.</p>
 <div class="refsect3">
 <a name="gst-debug-get-all-categories.returns"></a><h4>Returns</h4>
 <p> the list of
 debug categories. </p>
 <p><span class="annotation">[<acronym title="Free data container after the code is done."><span class="acronym">transfer container</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> Gst.DebugCategory]</span></p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-construct-term-color"></a><h3>gst_debug_construct_term_color ()</h3>
 <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
 gst_debug_construct_term_color (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a> colorinfo</code></em>);</pre>
 <p>Constructs a string that can be used for getting the desired color in color
 terminals.
 You need to free the string after use.</p>
 <div class="refsect3">
 <a name="gst-debug-construct-term-color.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>colorinfo</p></td>
 <td class="parameter_description"><p>the color info</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-construct-term-color.returns"></a><h4>Returns</h4>
 <p> a string containing the color
 definition. </p>
 <p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="Override the parsed C type with given type."><span class="acronym">type</span></acronym> gchar*]</span></p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="gst-debug-construct-win-color"></a><h3>gst_debug_construct_win_color ()</h3>
 <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a>
 gst_debug_construct_win_color (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#guint"><span class="type">guint</span></a> colorinfo</code></em>);</pre>
 <p>Constructs an integer that can be used for getting the desired color in
 windows' terminals (cmd.exe). As there is no mean to underline, we simply
 ignore this attribute.</p>
 <p>This function returns 0 on non-windows machines.</p>
 <div class="refsect3">
 <a name="gst-debug-construct-win-color.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody><tr>
 <td class="parameter_name"><p>colorinfo</p></td>
 <td class="parameter_description"><p>the color info</p></td>
 <td class="parameter_annotations"> </td>
 </tr></tbody>
 </table></div>
 </div>
 <div class="refsect3">
 <a name="gst-debug-construct-win-color.returns"></a><h4>Returns</h4>
 <p> an integer containing the color definition</p>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-LEVEL-LOG:CAPS"></a><h3>GST_CAT_LEVEL_LOG()</h3>
 <pre class="programlisting">#define             GST_CAT_LEVEL_LOG(cat,level,object,...)</pre>
 <p>Outputs a debugging message. This is the most general macro for outputting
 debugging messages. You will probably want to use one of the ones described
 below.</p>
 <div class="refsect3">
 <a name="GST-CAT-LEVEL-LOG.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>level</p></td>
 <td class="parameter_description"><p>the severity of the message</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>object</p></td>
 <td class="parameter_description"><p> the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to or <a href="/usr/share/gtk-doc/html/glibglib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if none. </p></td>
 <td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>A printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-ERROR-OBJECT:CAPS"></a><h3>GST_CAT_ERROR_OBJECT()</h3>
 <pre class="programlisting">#define GST_CAT_ERROR_OBJECT(cat,obj,...) GST_CAT_LEVEL_LOG (cat, GST_LEVEL_ERROR,   obj,  __VA_ARGS__)
 </pre>
 <p>Output an error message belonging to the given object in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-ERROR-OBJECT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>obj</p></td>
 <td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-WARNING-OBJECT:CAPS"></a><h3>GST_CAT_WARNING_OBJECT()</h3>
 <pre class="programlisting">#define GST_CAT_WARNING_OBJECT(cat,obj,...) GST_CAT_LEVEL_LOG (cat, GST_LEVEL_WARNING, obj,  __VA_ARGS__)
 </pre>
 <p>Output a warning message belonging to the given object in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-WARNING-OBJECT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>obj</p></td>
 <td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-INFO-OBJECT:CAPS"></a><h3>GST_CAT_INFO_OBJECT()</h3>
 <pre class="programlisting">#define GST_CAT_INFO_OBJECT(cat,obj,...) GST_CAT_LEVEL_LOG (cat, GST_LEVEL_INFO,    obj,  __VA_ARGS__)
 </pre>
 <p>Output an informational message belonging to the given object in the given
 category.</p>
 <div class="refsect3">
 <a name="GST-CAT-INFO-OBJECT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>obj</p></td>
 <td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-DEBUG-OBJECT:CAPS"></a><h3>GST_CAT_DEBUG_OBJECT()</h3>
 <pre class="programlisting">#define GST_CAT_DEBUG_OBJECT(cat,obj,...) GST_CAT_LEVEL_LOG (cat, GST_LEVEL_DEBUG,   obj,  __VA_ARGS__)
 </pre>
 <p>Output an debugging message belonging to the given object in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-DEBUG-OBJECT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>obj</p></td>
 <td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-LOG-OBJECT:CAPS"></a><h3>GST_CAT_LOG_OBJECT()</h3>
 <pre class="programlisting">#define GST_CAT_LOG_OBJECT(cat,obj,...)		GST_CAT_LEVEL_LOG (cat, GST_LEVEL_LOG,     obj,  __VA_ARGS__)
 </pre>
 <p>Output an logging message belonging to the given object in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-LOG-OBJECT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>obj</p></td>
 <td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-FIXME-OBJECT:CAPS"></a><h3>GST_CAT_FIXME_OBJECT()</h3>
 <pre class="programlisting">#define GST_CAT_FIXME_OBJECT(cat,obj,...) GST_CAT_LEVEL_LOG (cat, GST_LEVEL_FIXME,   obj,  __VA_ARGS__)
 </pre>
 <p>Output a fixme message belonging to the given object in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-FIXME-OBJECT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>obj</p></td>
 <td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-TRACE-OBJECT:CAPS"></a><h3>GST_CAT_TRACE_OBJECT()</h3>
 <pre class="programlisting">#define GST_CAT_TRACE_OBJECT(cat,obj,...) GST_CAT_LEVEL_LOG (cat, GST_LEVEL_TRACE,   obj,  __VA_ARGS__)
 </pre>
 <p>Output a tracing message belonging to the given object in the given
 category.</p>
 <div class="refsect3">
 <a name="GST-CAT-TRACE-OBJECT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>obj</p></td>
 <td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-MEMDUMP-OBJECT:CAPS"></a><h3>GST_CAT_MEMDUMP_OBJECT()</h3>
 <pre class="programlisting">#define             GST_CAT_MEMDUMP_OBJECT(cat,obj,msg,data,length)</pre>
 <p>Output a hexdump of <em class="parameter"><code>data</code></em>
  relating to the given object in the given
 category.</p>
 <div class="refsect3">
 <a name="GST-CAT-MEMDUMP-OBJECT.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>obj</p></td>
 <td class="parameter_description"><p>the <a href="/usr/share/gtk-doc/html/gobjectgobject-The-Base-Object-Type.html#GObject-struct"><span class="type">GObject</span></a> the message belongs to</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>msg</p></td>
 <td class="parameter_description"><p>message string to log with the data</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>data</p></td>
 <td class="parameter_description"><p>pointer to the data to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>length</p></td>
 <td class="parameter_description"><p>length of the data to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-ERROR:CAPS"></a><h3>GST_CAT_ERROR()</h3>
 <pre class="programlisting">#define GST_CAT_ERROR(cat,...)			GST_CAT_LEVEL_LOG (cat, GST_LEVEL_ERROR,   NULL, __VA_ARGS__)
 </pre>
 <p>Output an error message in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-ERROR.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-WARNING:CAPS"></a><h3>GST_CAT_WARNING()</h3>
 <pre class="programlisting">#define GST_CAT_WARNING(cat,...)		GST_CAT_LEVEL_LOG (cat, GST_LEVEL_WARNING, NULL, __VA_ARGS__)
 </pre>
 <p>Output an warning message in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-WARNING.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-INFO:CAPS"></a><h3>GST_CAT_INFO()</h3>
 <pre class="programlisting">#define GST_CAT_INFO(cat,...)			GST_CAT_LEVEL_LOG (cat, GST_LEVEL_INFO,    NULL, __VA_ARGS__)
 </pre>
 <p>Output an informational message in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-INFO.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-DEBUG:CAPS"></a><h3>GST_CAT_DEBUG()</h3>
 <pre class="programlisting">#define GST_CAT_DEBUG(cat,...)			GST_CAT_LEVEL_LOG (cat, GST_LEVEL_DEBUG,   NULL, __VA_ARGS__)
 </pre>
 <p>Output an debugging message in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-DEBUG.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-LOG:CAPS"></a><h3>GST_CAT_LOG()</h3>
 <pre class="programlisting">#define GST_CAT_LOG(cat,...)			GST_CAT_LEVEL_LOG (cat, GST_LEVEL_LOG,     NULL, __VA_ARGS__)
 </pre>
 <p>Output an logging message in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-LOG.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-FIXME:CAPS"></a><h3>GST_CAT_FIXME()</h3>
 <pre class="programlisting">#define GST_CAT_FIXME(cat,...)			GST_CAT_LEVEL_LOG (cat, GST_LEVEL_FIXME,   NULL, __VA_ARGS__)
 </pre>
 <p>Output an fixme message in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-FIXME.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"><p>cat</p></td>
 <td class="parameter_description"><p>category to use</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 <tr>
 <td class="parameter_name"><p>...</p></td>
 <td class="parameter_description"><p>printf-style message to output</p></td>
 <td class="parameter_annotations"> </td>
 </tr>
 </tbody>
 </table></div>
 </div>
 </div>
 <hr>
 <div class="refsect2">
 <a name="GST-CAT-TRACE:CAPS"></a><h3>GST_CAT_TRACE()</h3>
 <pre class="programlisting">#define GST_CAT_TRACE(cat,...)		GST_CAT_LEVEL_LOG (cat, GST_LEVEL_TRACE,   NULL, __VA_ARGS__)
 </pre>
 <p>Output a tracing message in the given category.</p>
 <div class="refsect3">
 <a name="GST-CAT-TRACE.parameters"></a><h4>Parameters</h4>
 <div class="informaltable"><table class="informaltable" width="100%" border="0">
 <colgroup>
 <col width="150px" class="parameters_name">
 <col class="parameters_description">
 <col width="200px" class="parameters_annotations">
 </colgroup>
 <tbody>
 <tr>
 <td class="parameter_name"