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  24 <a href="#gst-plugins-base-libs-gstaudioclock.synopsis" class="shortcut">Top</a>
  25                    |
  26                   <a href="#gst-plugins-base-libs-gstaudioclock.description" class="shortcut">Description</a>
  27                    |
  28                   <a href="#gst-plugins-base-libs-gstaudioclock.object-hierarchy" class="shortcut">Object Hierarchy</a>
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  31 <div class="refentry">
  32 <a name="gst-plugins-base-libs-gstaudioclock"></a><div class="titlepage"></div>
  33 <div class="refnamediv"><table width="100%"><tr>
  34 <td valign="top">
  35 <h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstaudioclock.top_of_page"></a>gstaudioclock</span></h2>
  36 <p>gstaudioclock — Helper object for implementing audio clocks</p>
  37 </td>
  38 <td valign="top" align="right"></td>
  39 </tr></table></div>
  40 <div class="refsynopsisdiv">
  41 <a name="gst-plugins-base-libs-gstaudioclock.synopsis"></a><h2>Synopsis</h2>
  42 <a name="GstAudioClock"></a><pre class="synopsis">
  43 #include &lt;gst/audio/gstaudioclock.h&gt;
  44
  45 struct              <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock-struct" title="struct GstAudioClock">GstAudioClock</a>;
  46 <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>        (<a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClockGetTimeFunc" title="GstAudioClockGetTimeFunc ()">*GstAudioClockGetTimeFunc</a>)         (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> *clock</code></em>,
  47                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);
  48 <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="returnvalue">GstClock</span></a> *          <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#gst-audio-clock-new" title="gst_audio_clock_new ()">gst_audio_clock_new</a>                 (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
  49                                                          <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClockGetTimeFunc" title="GstAudioClockGetTimeFunc ()"><span class="type">GstAudioClockGetTimeFunc</span></a> func</code></em>,
  50                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);
  51 <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="returnvalue">GstClock</span></a> *          <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#gst-audio-clock-new-full" title="gst_audio_clock_new_full ()">gst_audio_clock_new_full</a>            (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
  52                                                          <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClockGetTimeFunc" title="GstAudioClockGetTimeFunc ()"><span class="type">GstAudioClockGetTimeFunc</span></a> func</code></em>,
  53                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>,
  54                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> destroy_notify</code></em>);
  55 <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>        <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#gst-audio-clock-adjust" title="gst_audio_clock_adjust ()">gst_audio_clock_adjust</a>              (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> *clock</code></em>,
  56                                                          <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> time</code></em>);
  57 <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>        <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#gst-audio-clock-get-time" title="gst_audio_clock_get_time ()">gst_audio_clock_get_time</a>            (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> *clock</code></em>);
  58 <span class="returnvalue">void</span>                <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#gst-audio-clock-reset" title="gst_audio_clock_reset ()">gst_audio_clock_reset</a>               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a> *clock</code></em>,
  59                                                          <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> time</code></em>);
  60 <span class="returnvalue">void</span>                <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#gst-audio-clock-invalidate" title="gst_audio_clock_invalidate ()">gst_audio_clock_invalidate</a>          (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> *clock</code></em>);
  61 </pre>
  62 </div>
  63 <div class="refsect1">
  64 <a name="gst-plugins-base-libs-gstaudioclock.object-hierarchy"></a><h2>Object Hierarchy</h2>
  65 <pre class="synopsis">
  66   <a href="http://library.gnome.org/devel/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
  67    +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a>
  68          +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html">GstClock</a>
  69                +----<a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstSystemClock.html">GstSystemClock</a>
  70                      +----GstAudioClock
  71 </pre>
  72 </div>
  73 <div class="refsect1">
  74 <a name="gst-plugins-base-libs-gstaudioclock.description"></a><h2>Description</h2>
  75 <p>
  76 <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a> makes it easy for elements to implement a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a>, they
  77 simply need to provide a function that returns the current clock time.
  78 </p>
  79 <p>
  80 This object is internally used to implement the clock in <a class="link" href="gst-plugins-base-libs-gstbaseaudiosink.html#GstBaseAudioSink"><span class="type">GstBaseAudioSink</span></a>.
  81 </p>
  82 <p>
  83 Last reviewed on 2006-09-27 (0.10.12)
  84 </p>
  85 </div>
  86 <div class="refsect1">
  87 <a name="gst-plugins-base-libs-gstaudioclock.details"></a><h2>Details</h2>
  88 <div class="refsect2">
  89 <a name="GstAudioClock-struct"></a><h3>struct GstAudioClock</h3>
  90 <pre class="programlisting">struct GstAudioClock;</pre>
  91 <p>
  92 Opaque <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a>.
  93 </p>
  94 <div class="variablelist"><table border="0">
  95 <col align="left" valign="top">
  96 <tbody></tbody>
  97 </table></div>
  98 </div>
  99 <hr>
 100 <div class="refsect2">
 101 <a name="GstAudioClockGetTimeFunc"></a><h3>GstAudioClockGetTimeFunc ()</h3>
 102 <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>        (*GstAudioClockGetTimeFunc)         (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> *clock</code></em>,
 103                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
 104 <p>
 105 This function will be called whenever the current clock time needs to be
 106 calculated. If this function returns <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GST-CLOCK-TIME-NONE:CAPS"><span class="type">GST_CLOCK_TIME_NONE</span></a>, the last reported
 107 time will be returned by the clock.
 108 </p>
 109 <div class="variablelist"><table border="0">
 110 <col align="left" valign="top">
 111 <tbody>
 112 <tr>
 113 <td><p><span class="term"><em class="parameter"><code>clock</code></em> :</span></p></td>
 114 <td>the <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a>
 115 </td>
 116 </tr>
 117 <tr>
 118 <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
 119 <td>user data</td>
 120 </tr>
 121 <tr>
 122 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 123 <td>the current time or <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GST-CLOCK-TIME-NONE:CAPS"><span class="type">GST_CLOCK_TIME_NONE</span></a> if the previous time should
 124 be used.</td>
 125 </tr>
 126 </tbody>
 127 </table></div>
 128 </div>
 129 <hr>
 130 <div class="refsect2">
 131 <a name="gst-audio-clock-new"></a><h3>gst_audio_clock_new ()</h3>
 132 <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="returnvalue">GstClock</span></a> *          gst_audio_clock_new                 (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
 133                                                          <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClockGetTimeFunc" title="GstAudioClockGetTimeFunc ()"><span class="type">GstAudioClockGetTimeFunc</span></a> func</code></em>,
 134                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
 135 <p>
 136 Create a new <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a> instance. Whenever the clock time should be
 137 calculated it will call <em class="parameter"><code>func</code></em> with <em class="parameter"><code>user_data</code></em>. When <em class="parameter"><code>func</code></em> returns
 138 <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GST-CLOCK-TIME-NONE:CAPS"><span class="type">GST_CLOCK_TIME_NONE</span></a>, the clock will return the last reported time.
 139 </p>
 140 <div class="variablelist"><table border="0">
 141 <col align="left" valign="top">
 142 <tbody>
 143 <tr>
 144 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 145 <td>the name of the clock</td>
 146 </tr>
 147 <tr>
 148 <td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td>
 149 <td>a function</td>
 150 </tr>
 151 <tr>
 152 <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
 153 <td>user data</td>
 154 </tr>
 155 <tr>
 156 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 157 <td>a new <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a> casted to a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a>.</td>
 158 </tr>
 159 </tbody>
 160 </table></div>
 161 </div>
 162 <hr>
 163 <div class="refsect2">
 164 <a name="gst-audio-clock-new-full"></a><h3>gst_audio_clock_new_full ()</h3>
 165 <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="returnvalue">GstClock</span></a> *          gst_audio_clock_new_full            (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
 166                                                          <em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClockGetTimeFunc" title="GstAudioClockGetTimeFunc ()"><span class="type">GstAudioClockGetTimeFunc</span></a> func</code></em>,
 167                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>,
 168                                                          <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> destroy_notify</code></em>);</pre>
 169 <p>
 170 Create a new <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a> instance. Whenever the clock time should be
 171 calculated it will call <em class="parameter"><code>func</code></em> with <em class="parameter"><code>user_data</code></em>. When <em class="parameter"><code>func</code></em> returns
 172 <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GST-CLOCK-TIME-NONE:CAPS"><span class="type">GST_CLOCK_TIME_NONE</span></a>, the clock will return the last reported time.
 173 </p>
 174 <div class="variablelist"><table border="0">
 175 <col align="left" valign="top">
 176 <tbody>
 177 <tr>
 178 <td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
 179 <td>the name of the clock</td>
 180 </tr>
 181 <tr>
 182 <td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td>
 183 <td>a function</td>
 184 </tr>
 185 <tr>
 186 <td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
 187 <td>user data</td>
 188 </tr>
 189 <tr>
 190 <td><p><span class="term"><em class="parameter"><code>destroy_notify</code></em> :</span></p></td>
 191 <td>
 192 <a href="http://library.gnome.org/devel/glib/unstable/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> for <em class="parameter"><code>user_data</code></em>
 193 </td>
 194 </tr>
 195 <tr>
 196 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 197 <td>a new <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a> casted to a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a>.</td>
 198 </tr>
 199 </tbody>
 200 </table></div>
 201 <p class="since">Since 0.10.31</p>
 202 </div>
 203 <hr>
 204 <div class="refsect2">
 205 <a name="gst-audio-clock-adjust"></a><h3>gst_audio_clock_adjust ()</h3>
 206 <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>        gst_audio_clock_adjust              (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> *clock</code></em>,
 207                                                          <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> time</code></em>);</pre>
 208 <p>
 209 Adjust <em class="parameter"><code>time</code></em> with the internal offset of the audio clock.
 210 </p>
 211 <div class="variablelist"><table border="0">
 212 <col align="left" valign="top">
 213 <tbody>
 214 <tr>
 215 <td><p><span class="term"><em class="parameter"><code>clock</code></em> :</span></p></td>
 216 <td>a <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a>
 217 </td>
 218 </tr>
 219 <tr>
 220 <td><p><span class="term"><em class="parameter"><code>time</code></em> :</span></p></td>
 221 <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
 222 </td>
 223 </tr>
 224 <tr>
 225 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 226 <td>
 227 <em class="parameter"><code>time</code></em> adjusted with the internal offset.</td>
 228 </tr>
 229 </tbody>
 230 </table></div>
 231 <p class="since">Since 0.10.23</p>
 232 </div>
 233 <hr>
 234 <div class="refsect2">
 235 <a name="gst-audio-clock-get-time"></a><h3>gst_audio_clock_get_time ()</h3>
 236 <pre class="programlisting"><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="returnvalue">GstClockTime</span></a>        gst_audio_clock_get_time            (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> *clock</code></em>);</pre>
 237 <p>
 238 Report the time as returned by the <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClockGetTimeFunc" title="GstAudioClockGetTimeFunc ()"><span class="type">GstAudioClockGetTimeFunc</span></a> without applying
 239 any offsets.
 240 </p>
 241 <div class="variablelist"><table border="0">
 242 <col align="left" valign="top">
 243 <tbody>
 244 <tr>
 245 <td><p><span class="term"><em class="parameter"><code>clock</code></em> :</span></p></td>
 246 <td>a <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a>
 247 </td>
 248 </tr>
 249 <tr>
 250 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 251 <td>the time as reported by the time function of the audio clock</td>
 252 </tr>
 253 </tbody>
 254 </table></div>
 255 <p class="since">Since 0.10.23</p>
 256 </div>
 257 <hr>
 258 <div class="refsect2">
 259 <a name="gst-audio-clock-reset"></a><h3>gst_audio_clock_reset ()</h3>
 260 <pre class="programlisting"><span class="returnvalue">void</span>                gst_audio_clock_reset               (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a> *clock</code></em>,
 261                                                          <em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> time</code></em>);</pre>
 262 <p>
 263 Inform <em class="parameter"><code>clock</code></em> that future calls to <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClockGetTimeFunc" title="GstAudioClockGetTimeFunc ()"><span class="type">GstAudioClockGetTimeFunc</span></a> will return values
 264 starting from <em class="parameter"><code>time</code></em>. The clock will update an internal offset to make sure that
 265 future calls to internal_time will return an increasing result as required by
 266 the <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> object.
 267 </p>
 268 <div class="variablelist"><table border="0">
 269 <col align="left" valign="top">
 270 <tbody>
 271 <tr>
 272 <td><p><span class="term"><em class="parameter"><code>clock</code></em> :</span></p></td>
 273 <td>a <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a>
 274 </td>
 275 </tr>
 276 <tr>
 277 <td><p><span class="term"><em class="parameter"><code>time</code></em> :</span></p></td>
 278 <td>a <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
 279 </td>
 280 </tr>
 281 </tbody>
 282 </table></div>
 283 </div>
 284 <hr>
 285 <div class="refsect2">
 286 <a name="gst-audio-clock-invalidate"></a><h3>gst_audio_clock_invalidate ()</h3>
 287 <pre class="programlisting"><span class="returnvalue">void</span>                gst_audio_clock_invalidate          (<em class="parameter"><code><a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstClock.html"><span class="type">GstClock</span></a> *clock</code></em>);</pre>
 288 <p>
 289 Invalidate the clock function. Call this function when the provided
 290 <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClockGetTimeFunc" title="GstAudioClockGetTimeFunc ()"><span class="type">GstAudioClockGetTimeFunc</span></a> cannot be called anymore, for example, when the
 291 user_data becomes invalid.
 292 </p>
 293 <p>
 294 After calling this function, <em class="parameter"><code>clock</code></em> will return the last returned time for
 295 the rest of its lifetime.
 296 </p>
 297 <div class="variablelist"><table border="0">
 298 <col align="left" valign="top">
 299 <tbody><tr>
 300 <td><p><span class="term"><em class="parameter"><code>clock</code></em> :</span></p></td>
 301 <td>a <a class="link" href="gst-plugins-base-libs-gstaudioclock.html#GstAudioClock"><span class="type">GstAudioClock</span></a>
 302 </td>
 303 </tr></tbody>
 304 </table></div>
 305 <p class="since">Since 0.10.31</p>
 306 </div>
 307 </div>
 308 <div class="refsect1">
 309 <a name="gst-plugins-base-libs-gstaudioclock.see-also"></a><h2>See Also</h2>
 310 <a class="link" href="gst-plugins-base-libs-gstbaseaudiosink.html#GstBaseAudioSink"><span class="type">GstBaseAudioSink</span></a>, <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstSystemClock.html"><span class="type">GstSystemClock</span></a>
 311 </div>
 312 </div>
 313 <div class="footer">
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