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<div class="refentry">
<a name="gst-plugins-base-libs-gstrtsprange"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstrtsprange.top_of_page"></a>gstrtsprange</span></h2>
<p>gstrtsprange — dealing with time ranges</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="gst-plugins-base-libs-gstrtsprange.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <gst/rtsp/gstrtsprange.h>
enum <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPRangeUnit" title="enum GstRTSPRangeUnit">GstRTSPRangeUnit</a>;
struct <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange">GstRTSPTimeRange</a>;
struct <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTime" title="struct GstRTSPTime">GstRTSPTime</a>;
struct <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTime2" title="struct GstRTSPTime2">GstRTSPTime2</a>;
enum <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeType" title="enum GstRTSPTimeType">GstRTSPTimeType</a>;
<a class="link" href="gst-plugins-base-libs-gstrtspdefs.html#GstRTSPResult" title="enum GstRTSPResult"><span class="returnvalue">GstRTSPResult</span></a> <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#gst-rtsp-range-parse" title="gst_rtsp_range_parse ()">gst_rtsp_range_parse</a> (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *rangestr</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> **range</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#gst-rtsp-range-get-times" title="gst_rtsp_range_get_times ()">gst_rtsp_range_get_times</a> (<em class="parameter"><code>const <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> *range</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> *min</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> *max</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#gst-rtsp-range-to-string" title="gst_rtsp_range_to_string ()">gst_rtsp_range_to_string</a> (<em class="parameter"><code>const <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> *range</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#gst-rtsp-range-convert-units" title="gst_rtsp_range_convert_units ()">gst_rtsp_range_convert_units</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> *range</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPRangeUnit" title="enum GstRTSPRangeUnit"><span class="type">GstRTSPRangeUnit</span></a> unit</code></em>);
<span class="returnvalue">void</span> <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#gst-rtsp-range-free" title="gst_rtsp_range_free ()">gst_rtsp_range_free</a> (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> *range</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstrtsprange.description"></a><h2>Description</h2>
<p>
Provides helper functions to deal with time ranges.
Last reviewed on 2007-07-25 (0.10.14)
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstrtsprange.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstRTSPRangeUnit"></a><h3>enum GstRTSPRangeUnit</h3>
<pre class="programlisting">typedef enum {
GST_RTSP_RANGE_SMPTE,
GST_RTSP_RANGE_SMPTE_30_DROP,
GST_RTSP_RANGE_SMPTE_25,
GST_RTSP_RANGE_NPT,
GST_RTSP_RANGE_CLOCK
} GstRTSPRangeUnit;
</pre>
<p>
Different possible time range units.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><a name="GST-RTSP-RANGE-SMPTE:CAPS"></a><span class="term"><code class="literal">GST_RTSP_RANGE_SMPTE</code></span></p></td>
<td>SMPTE timecode
</td>
</tr>
<tr>
<td><p><a name="GST-RTSP-RANGE-SMPTE-30-DROP:CAPS"></a><span class="term"><code class="literal">GST_RTSP_RANGE_SMPTE_30_DROP</code></span></p></td>
<td>29.97 frames per second
</td>
</tr>
<tr>
<td><p><a name="GST-RTSP-RANGE-SMPTE-25:CAPS"></a><span class="term"><code class="literal">GST_RTSP_RANGE_SMPTE_25</code></span></p></td>
<td>25 frames per second
</td>
</tr>
<tr>
<td><p><a name="GST-RTSP-RANGE-NPT:CAPS"></a><span class="term"><code class="literal">GST_RTSP_RANGE_NPT</code></span></p></td>
<td>Normal play time
</td>
</tr>
<tr>
<td><p><a name="GST-RTSP-RANGE-CLOCK:CAPS"></a><span class="term"><code class="literal">GST_RTSP_RANGE_CLOCK</code></span></p></td>
<td>Absolute time expressed as ISO 8601 timestamps
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstRTSPTimeRange"></a><h3>struct GstRTSPTimeRange</h3>
<pre class="programlisting">struct GstRTSPTimeRange {
GstRTSPRangeUnit unit;
GstRTSPTime min;
GstRTSPTime max;
GstRTSPTime2 min2;
GstRTSPTime2 max2;
};
</pre>
<p>
A time range.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPRangeUnit" title="enum GstRTSPRangeUnit"><span class="type">GstRTSPRangeUnit</span></a> <em class="structfield"><code><a name="GstRTSPTimeRange.unit"></a>unit</code></em>;</span></p></td>
<td>the time units used</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTime" title="struct GstRTSPTime"><span class="type">GstRTSPTime</span></a> <em class="structfield"><code><a name="GstRTSPTimeRange.min"></a>min</code></em>;</span></p></td>
<td>the minimum interval</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTime" title="struct GstRTSPTime"><span class="type">GstRTSPTime</span></a> <em class="structfield"><code><a name="GstRTSPTimeRange.max"></a>max</code></em>;</span></p></td>
<td>the maximum interval</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTime2" title="struct GstRTSPTime2"><span class="type">GstRTSPTime2</span></a> <em class="structfield"><code><a name="GstRTSPTimeRange.min2"></a>min2</code></em>;</span></p></td>
<td>extra fields in the minimum interval (Since: 1.1.1)</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTime2" title="struct GstRTSPTime2"><span class="type">GstRTSPTime2</span></a> <em class="structfield"><code><a name="GstRTSPTimeRange.max2"></a>max2</code></em>;</span></p></td>
<td>extra fields in the maximum interval (Since: 1.1.1)</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstRTSPTime"></a><h3>struct GstRTSPTime</h3>
<pre class="programlisting">struct GstRTSPTime {
GstRTSPTimeType type;
gdouble seconds;
};
</pre>
<p>
A time indication.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeType" title="enum GstRTSPTimeType"><span class="type">GstRTSPTimeType</span></a> <em class="structfield"><code><a name="GstRTSPTime.type"></a>type</code></em>;</span></p></td>
<td>the time of the time</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GstRTSPTime.seconds"></a>seconds</code></em>;</span></p></td>
<td>seconds when <em class="parameter"><code>type</code></em> is GST_RTSP_TIME_SECONDS,
GST_RTSP_TIME_UTC and GST_RTSP_TIME_FRAMES</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GstRTSPTime2"></a><h3>struct GstRTSPTime2</h3>
<pre class="programlisting">struct GstRTSPTime2 {
gdouble frames;
guint year;
guint month;
guint day;
};
</pre>
<p>
Extra fields for a time indication.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a> <em class="structfield"><code><a name="GstRTSPTime2.frames"></a>frames</code></em>;</span></p></td>
<td>frames and subframes when type in GstRTSPTime is
GST_RTSP_TIME_FRAMES</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstRTSPTime2.year"></a>year</code></em>;</span></p></td>
<td>year when type is GST_RTSP_TIME_UTC</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstRTSPTime2.month"></a>month</code></em>;</span></p></td>
<td>month when type is GST_RTSP_TIME_UTC</td>
</tr>
<tr>
<td><p><span class="term"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> <em class="structfield"><code><a name="GstRTSPTime2.day"></a>day</code></em>;</span></p></td>
<td>day when type is GST_RTSP_TIME_UTC</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.1.1</p>
</div>
<hr>
<div class="refsect2">
<a name="GstRTSPTimeType"></a><h3>enum GstRTSPTimeType</h3>
<pre class="programlisting">typedef enum {
GST_RTSP_TIME_SECONDS,
GST_RTSP_TIME_NOW,
GST_RTSP_TIME_END,
GST_RTSP_TIME_FRAMES,
GST_RTSP_TIME_UTC
} GstRTSPTimeType;
</pre>
<p>
Possible time types.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><a name="GST-RTSP-TIME-SECONDS:CAPS"></a><span class="term"><code class="literal">GST_RTSP_TIME_SECONDS</code></span></p></td>
<td>seconds
</td>
</tr>
<tr>
<td><p><a name="GST-RTSP-TIME-NOW:CAPS"></a><span class="term"><code class="literal">GST_RTSP_TIME_NOW</code></span></p></td>
<td>now
</td>
</tr>
<tr>
<td><p><a name="GST-RTSP-TIME-END:CAPS"></a><span class="term"><code class="literal">GST_RTSP_TIME_END</code></span></p></td>
<td>end
</td>
</tr>
<tr>
<td><p><a name="GST-RTSP-TIME-FRAMES:CAPS"></a><span class="term"><code class="literal">GST_RTSP_TIME_FRAMES</code></span></p></td>
<td>frames and subframes
</td>
</tr>
<tr>
<td><p><a name="GST-RTSP-TIME-UTC:CAPS"></a><span class="term"><code class="literal">GST_RTSP_TIME_UTC</code></span></p></td>
<td>UTC time
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-rtsp-range-parse"></a><h3>gst_rtsp_range_parse ()</h3>
<pre class="programlisting"><a class="link" href="gst-plugins-base-libs-gstrtspdefs.html#GstRTSPResult" title="enum GstRTSPResult"><span class="returnvalue">GstRTSPResult</span></a> gst_rtsp_range_parse (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *rangestr</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> **range</code></em>);</pre>
<p>
Parse <em class="parameter"><code>rangestr</code></em> to a <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a>.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>rangestr</code></em> :</span></p></td>
<td>a range string to parse</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>range</code></em> :</span></p></td>
<td>location to hold the <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> result</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a class="link" href="gst-plugins-base-libs-gstrtspdefs.html#GST-RTSP-OK:CAPS"><span class="type">GST_RTSP_OK</span></a> on success.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-rtsp-range-get-times"></a><h3>gst_rtsp_range_get_times ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_rtsp_range_get_times (<em class="parameter"><code>const <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> *range</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> *min</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> *max</code></em>);</pre>
<p>
Retrieve the minimum and maximum values from <em class="parameter"><code>range</code></em> converted to
<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a> in <em class="parameter"><code>min</code></em> and <em class="parameter"><code>max</code></em>.
</p>
<p>
A value of <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GST-CLOCK-TIME-NONE:CAPS"><code class="literal">GST_CLOCK_TIME_NONE</code></a> will be used to signal <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GST-RTSP-TIME-NOW:CAPS"><span class="type">GST_RTSP_TIME_NOW</span></a>
and <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GST-RTSP-TIME-END:CAPS"><span class="type">GST_RTSP_TIME_END</span></a> for <em class="parameter"><code>min</code></em> and <em class="parameter"><code>max</code></em> respectively.
</p>
<p>
UTC times will be converted to nanoseconds since 1900.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>range</code></em> :</span></p></td>
<td>a <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>min</code></em> :</span></p></td>
<td>result minimum <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>max</code></em> :</span></p></td>
<td>result maximum <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstClock.html#GstClockTime"><span class="type">GstClockTime</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 1.1.1</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-rtsp-range-to-string"></a><h3>gst_rtsp_range_to_string ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gst_rtsp_range_to_string (<em class="parameter"><code>const <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> *range</code></em>);</pre>
<p>
Convert <em class="parameter"><code>range</code></em> into a string representation.
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<td><p><span class="term"><em class="parameter"><code>range</code></em> :</span></p></td>
<td>a <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a>
</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The string representation of <em class="parameter"><code>range</code></em>. <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> after usage.</td>
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<div class="refsect2">
<a name="gst-rtsp-range-convert-units"></a><h3>gst_rtsp_range_convert_units ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_rtsp_range_convert_units (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> *range</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPRangeUnit" title="enum GstRTSPRangeUnit"><span class="type">GstRTSPRangeUnit</span></a> unit</code></em>);</pre>
<p>
Converts the range in-place between different types of units.
Ranges containing the special value <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GST-RTSP-TIME-NOW:CAPS"><span class="type">GST_RTSP_TIME_NOW</span></a> can not be
converted as these are only valid for <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GST-RTSP-RANGE-NPT:CAPS"><span class="type">GST_RTSP_RANGE_NPT</span></a>.
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<td><p><span class="term"><em class="parameter"><code>range</code></em> :</span></p></td>
<td>a <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a>
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<td><p><span class="term"><em class="parameter"><code>unit</code></em> :</span></p></td>
<td>the unit to convert the range into</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the range could be converted</td>
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<div class="refsect2">
<a name="gst-rtsp-range-free"></a><h3>gst_rtsp_range_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gst_rtsp_range_free (<em class="parameter"><code><a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a> *range</code></em>);</pre>
<p>
Free the memory allocated by <em class="parameter"><code>range</code></em>.
</p>
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<td><p><span class="term"><em class="parameter"><code>range</code></em> :</span></p></td>
<td>a <a class="link" href="gst-plugins-base-libs-gstrtsprange.html#GstRTSPTimeRange" title="struct GstRTSPTimeRange"><span class="type">GstRTSPTimeRange</span></a>
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