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<a href="#id2657823" class="shortcut">Description</a></nobr></td></tr>
</table>
<div class="refentry" lang="en">
<a name="gst-plugins-base-libs-gstrtpbuffer"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2>
<a name="id2656583"></a><span class="refentrytitle">gstrtpbuffer</span>
</h2>
<p>gstrtpbuffer — Helper methods for dealing with RTP buffers</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">
#include <gst/rtp/gstrtpbuffer.h>
#define <a href="gst-plugins-base-libs-gstrtpbuffer.html#GST-RTP-VERSION:CAPS">GST_RTP_VERSION</a>
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-allocate-data">gst_rtp_buffer_allocate_data</a> (GstBuffer *buffer,
guint payload_len,
guint8 pad_len,
guint8 csrc_count);
GstBuffer* <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-new-take-data">gst_rtp_buffer_new_take_data</a> (gpointer data,
guint len);
GstBuffer* <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-new-copy-data">gst_rtp_buffer_new_copy_data</a> (gpointer data,
guint len);
GstBuffer* <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-new-allocate">gst_rtp_buffer_new_allocate</a> (guint payload_len,
guint8 pad_len,
guint8 csrc_count);
GstBuffer* <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-new-allocate-len">gst_rtp_buffer_new_allocate_len</a> (guint packet_len,
guint8 pad_len,
guint8 csrc_count);
guint <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-calc-header-len">gst_rtp_buffer_calc_header_len</a> (guint8 csrc_count);
guint <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-calc-packet-len">gst_rtp_buffer_calc_packet_len</a> (guint payload_len,
guint8 pad_len,
guint8 csrc_count);
guint <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-calc-payload-len">gst_rtp_buffer_calc_payload_len</a> (guint packet_len,
guint8 pad_len,
guint8 csrc_count);
gboolean <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-validate">gst_rtp_buffer_validate</a> (GstBuffer *buffer);
gboolean <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-validate-data">gst_rtp_buffer_validate_data</a> (guint8 *data,
guint len);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-packet-len">gst_rtp_buffer_set_packet_len</a> (GstBuffer *buffer,
guint len);
guint <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-packet-len">gst_rtp_buffer_get_packet_len</a> (GstBuffer *buffer);
guint <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-header-len">gst_rtp_buffer_get_header_len</a> (GstBuffer *buffer);
guint8 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-version">gst_rtp_buffer_get_version</a> (GstBuffer *buffer);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-version">gst_rtp_buffer_set_version</a> (GstBuffer *buffer,
guint8 version);
gboolean <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-padding">gst_rtp_buffer_get_padding</a> (GstBuffer *buffer);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-padding">gst_rtp_buffer_set_padding</a> (GstBuffer *buffer,
gboolean padding);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-pad-to">gst_rtp_buffer_pad_to</a> (GstBuffer *buffer,
guint len);
gboolean <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-extension">gst_rtp_buffer_get_extension</a> (GstBuffer *buffer);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-extension">gst_rtp_buffer_set_extension</a> (GstBuffer *buffer,
gboolean extension);
gboolean <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-extension-data">gst_rtp_buffer_get_extension_data</a> (GstBuffer *buffer,
guint16 *bits,
gpointer *data,
guint *wordlen);
guint32 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-ssrc">gst_rtp_buffer_get_ssrc</a> (GstBuffer *buffer);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-ssrc">gst_rtp_buffer_set_ssrc</a> (GstBuffer *buffer,
guint32 ssrc);
guint8 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-csrc-count">gst_rtp_buffer_get_csrc_count</a> (GstBuffer *buffer);
guint32 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-csrc">gst_rtp_buffer_get_csrc</a> (GstBuffer *buffer,
guint8 idx);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-csrc">gst_rtp_buffer_set_csrc</a> (GstBuffer *buffer,
guint8 idx,
guint32 csrc);
gboolean <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-marker">gst_rtp_buffer_get_marker</a> (GstBuffer *buffer);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-marker">gst_rtp_buffer_set_marker</a> (GstBuffer *buffer,
gboolean marker);
guint8 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-payload-type">gst_rtp_buffer_get_payload_type</a> (GstBuffer *buffer);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-payload-type">gst_rtp_buffer_set_payload_type</a> (GstBuffer *buffer,
guint8 payload_type);
guint16 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-seq">gst_rtp_buffer_get_seq</a> (GstBuffer *buffer);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-seq">gst_rtp_buffer_set_seq</a> (GstBuffer *buffer,
guint16 seq);
guint32 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-timestamp">gst_rtp_buffer_get_timestamp</a> (GstBuffer *buffer);
void <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-set-timestamp">gst_rtp_buffer_set_timestamp</a> (GstBuffer *buffer,
guint32 timestamp);
GstBuffer* <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-payload-buffer">gst_rtp_buffer_get_payload_buffer</a> (GstBuffer *buffer);
GstBuffer* <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-payload-subbuffer">gst_rtp_buffer_get_payload_subbuffer</a>
(GstBuffer *buffer,
guint offset,
guint len);
guint <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-payload-len">gst_rtp_buffer_get_payload_len</a> (GstBuffer *buffer);
gpointer <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-get-payload">gst_rtp_buffer_get_payload</a> (GstBuffer *buffer);
guint32 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-default-clock-rate">gst_rtp_buffer_default_clock_rate</a> (guint8 payload_type);
gint <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-compare-seqnum">gst_rtp_buffer_compare_seqnum</a> (guint16 seqnum1,
guint16 seqnum2);
guint64 <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-ext-timestamp">gst_rtp_buffer_ext_timestamp</a> (guint64 *exttimestamp,
guint32 timestamp);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id2657823"></a><h2>Description</h2>
<p>
</p>
<div class="refsect2" lang="en">
<a name="id2657835"></a><p>
The GstRTPBuffer helper functions makes it easy to parse and create regular
<span class="type">GstBuffer</span> objects that contain RTP payloads. These buffers are typically of
'application/x-rtp' <span class="type">GstCaps</span>.
</p>
</div>
<p>
</p>
<p>
Last reviewed on 2006-07-17 (0.10.10)</p>
<p>
</p>
</div>
<div class="refsect1" lang="en">
<a name="id2657870"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id2657880"></a><h3>
<a name="GST-RTP-VERSION:CAPS"></a>GST_RTP_VERSION</h3>
<a class="indexterm" name="id2657894"></a><pre class="programlisting">#define GST_RTP_VERSION 2
</pre>
<p>
The supported RTP version 2.</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2657912"></a><h3>
<a name="gst-rtp-buffer-allocate-data"></a>gst_rtp_buffer_allocate_data ()</h3>
<a class="indexterm" name="id2657926"></a><pre class="programlisting">void gst_rtp_buffer_allocate_data (GstBuffer *buffer,
guint payload_len,
guint8 pad_len,
guint8 csrc_count);</pre>
<p>
Allocate enough data in <em class="parameter"><code>buffer</code></em> to hold an RTP packet with <em class="parameter"><code>csrc_count</code></em> CSRCs,
a payload length of <em class="parameter"><code>payload_len</code></em> and padding of <em class="parameter"><code>pad_len</code></em>.
MALLOCDATA of <em class="parameter"><code>buffer</code></em> will be overwritten and will not be freed.
All other RTP header fields will be set to 0/FALSE.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> a <span class="type">GstBuffer</span>
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>payload_len</code></em> :</span></td>
<td> the length of the payload
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>pad_len</code></em> :</span></td>
<td> the amount of padding
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>csrc_count</code></em> :</span></td>
<td> the number of CSRC entries
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2658082"></a><h3>
<a name="gst-rtp-buffer-new-take-data"></a>gst_rtp_buffer_new_take_data ()</h3>
<a class="indexterm" name="id2658096"></a><pre class="programlisting">GstBuffer* gst_rtp_buffer_new_take_data (gpointer data,
guint len);</pre>
<p>
Create a new buffer and set the data and size of the buffer to <em class="parameter"><code>data</code></em> and <em class="parameter"><code>len</code></em>
respectively. <em class="parameter"><code>data</code></em> will be freed when the buffer is unreffed, so this
function transfers ownership of <em class="parameter"><code>data</code></em> to the new buffer.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>data</code></em> :</span></td>
<td> data for the new buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>len</code></em> :</span></td>
<td> the length of data
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> A newly allocated buffer with <em class="parameter"><code>data</code></em> and of size <em class="parameter"><code>len</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2658217"></a><h3>
<a name="gst-rtp-buffer-new-copy-data"></a>gst_rtp_buffer_new_copy_data ()</h3>
<a class="indexterm" name="id2658230"></a><pre class="programlisting">GstBuffer* gst_rtp_buffer_new_copy_data (gpointer data,
guint len);</pre>
<p>
Create a new buffer and set the data to a copy of <em class="parameter"><code>len</code></em>
bytes of <em class="parameter"><code>data</code></em> and the size to <em class="parameter"><code>len</code></em>. The data will be freed when the buffer
is freed.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>data</code></em> :</span></td>
<td> data for the new buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>len</code></em> :</span></td>
<td> the length of data
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> A newly allocated buffer with a copy of <em class="parameter"><code>data</code></em> and of size <em class="parameter"><code>len</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2658344"></a><h3>
<a name="gst-rtp-buffer-new-allocate"></a>gst_rtp_buffer_new_allocate ()</h3>
<a class="indexterm" name="id2658358"></a><pre class="programlisting">GstBuffer* gst_rtp_buffer_new_allocate (guint payload_len,
guint8 pad_len,
guint8 csrc_count);</pre>
<p>
Allocate a new <span class="type">Gstbuffer</span> with enough data to hold an RTP packet with <em class="parameter"><code>csrc_count</code></em> CSRCs,
a payload length of <em class="parameter"><code>payload_len</code></em> and padding of <em class="parameter"><code>pad_len</code></em>.
All other RTP header fields will be set to 0/FALSE.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>payload_len</code></em> :</span></td>
<td> the length of the payload
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>pad_len</code></em> :</span></td>
<td> the amount of padding
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>csrc_count</code></em> :</span></td>
<td> the number of CSRC entries
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> A newly allocated buffer that can hold an RTP packet with given
parameters.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2658493"></a><h3>
<a name="gst-rtp-buffer-new-allocate-len"></a>gst_rtp_buffer_new_allocate_len ()</h3>
<a class="indexterm" name="id2658506"></a><pre class="programlisting">GstBuffer* gst_rtp_buffer_new_allocate_len (guint packet_len,
guint8 pad_len,
guint8 csrc_count);</pre>
<p>
Create a new <span class="type">GstBuffer</span> that can hold an RTP packet that is exactly
<em class="parameter"><code>packet_len</code></em> long. The length of the payload depends on <em class="parameter"><code>pad_len</code></em> and
<em class="parameter"><code>csrc_count</code></em> and can be calculated with <a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-calc-payload-len"><code class="function">gst_rtp_buffer_calc_payload_len()</code></a>.
All RTP header fields will be set to 0/FALSE.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>packet_len</code></em> :</span></td>
<td> the total length of the packet
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>pad_len</code></em> :</span></td>
<td> the amount of padding
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>csrc_count</code></em> :</span></td>
<td> the number of CSRC entries
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> A newly allocated buffer that can hold an RTP packet of <em class="parameter"><code>packet_len</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2658658"></a><h3>
<a name="gst-rtp-buffer-calc-header-len"></a>gst_rtp_buffer_calc_header_len ()</h3>
<a class="indexterm" name="id2658671"></a><pre class="programlisting">guint gst_rtp_buffer_calc_header_len (guint8 csrc_count);</pre>
<p>
Calculate the header length of an RTP packet with <em class="parameter"><code>csrc_count</code></em> CSRC entries.
An RTP packet can have at most 15 CSRC entries.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>csrc_count</code></em> :</span></td>
<td> the number of CSRC entries
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The length of an RTP header with <em class="parameter"><code>csrc_count</code></em> CSRC entries.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2658746"></a><h3>
<a name="gst-rtp-buffer-calc-packet-len"></a>gst_rtp_buffer_calc_packet_len ()</h3>
<a class="indexterm" name="id2658760"></a><pre class="programlisting">guint gst_rtp_buffer_calc_packet_len (guint payload_len,
guint8 pad_len,
guint8 csrc_count);</pre>
<p>
Calculate the total length of an RTP packet with a payload size of <em class="parameter"><code>payload_len</code></em>,
a padding of <em class="parameter"><code>pad_len</code></em> and a <em class="parameter"><code>csrc_count</code></em> CSRC entries.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>payload_len</code></em> :</span></td>
<td> the length of the payload
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>pad_len</code></em> :</span></td>
<td> the amount of padding
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>csrc_count</code></em> :</span></td>
<td> the number of CSRC entries
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The total length of an RTP header with given parameters.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2658885"></a><h3>
<a name="gst-rtp-buffer-calc-payload-len"></a>gst_rtp_buffer_calc_payload_len ()</h3>
<a class="indexterm" name="id2658899"></a><pre class="programlisting">guint gst_rtp_buffer_calc_payload_len (guint packet_len,
guint8 pad_len,
guint8 csrc_count);</pre>
<p>
Calculate the length of the payload of an RTP packet with size <em class="parameter"><code>packet_len</code></em>,
a padding of <em class="parameter"><code>pad_len</code></em> and a <em class="parameter"><code>csrc_count</code></em> CSRC entries.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>packet_len</code></em> :</span></td>
<td> the length of the total RTP packet
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>pad_len</code></em> :</span></td>
<td> the amount of padding
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>csrc_count</code></em> :</span></td>
<td> the number of CSRC entries
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The length of the payload of an RTP packet with given parameters.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659024"></a><h3>
<a name="gst-rtp-buffer-validate"></a>gst_rtp_buffer_validate ()</h3>
<a class="indexterm" name="id2659038"></a><pre class="programlisting">gboolean gst_rtp_buffer_validate (GstBuffer *buffer);</pre>
<p>
Check if the data pointed to by <em class="parameter"><code>buffer</code></em> is a valid RTP packet using
<a href="gst-plugins-base-libs-gstrtpbuffer.html#gst-rtp-buffer-validate-data"><code class="function">gst_rtp_buffer_validate_data()</code></a>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer to validate
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE if <em class="parameter"><code>buffer</code></em> is a valid RTP packet.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659122"></a><h3>
<a name="gst-rtp-buffer-validate-data"></a>gst_rtp_buffer_validate_data ()</h3>
<a class="indexterm" name="id2659136"></a><pre class="programlisting">gboolean gst_rtp_buffer_validate_data (guint8 *data,
guint len);</pre>
<p>
Check if the <em class="parameter"><code>data</code></em> and <em class="parameter"><code>size</code></em> point to the data of a valid RTP packet.
This function checks the length, version and padding of the packet data.
Use this function to validate a packet before using the other functions in
this module.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>data</code></em> :</span></td>
<td> the data to validate
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>len</code></em> :</span></td>
<td> the length of <em class="parameter"><code>data</code></em> to validate
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE if the data points to a valid RTP packet.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659240"></a><h3>
<a name="gst-rtp-buffer-set-packet-len"></a>gst_rtp_buffer_set_packet_len ()</h3>
<a class="indexterm" name="id2659254"></a><pre class="programlisting">void gst_rtp_buffer_set_packet_len (GstBuffer *buffer,
guint len);</pre>
<p>
Set the total <em class="parameter"><code>buffer</code></em> size to <em class="parameter"><code>len</code></em>. The data in the buffer will be made
larger if needed. Any padding will be removed from the packet.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>len</code></em> :</span></td>
<td> the new packet length
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659339"></a><h3>
<a name="gst-rtp-buffer-get-packet-len"></a>gst_rtp_buffer_get_packet_len ()</h3>
<a class="indexterm" name="id2659353"></a><pre class="programlisting">guint gst_rtp_buffer_get_packet_len (GstBuffer *buffer);</pre>
<p>
Return the total length of the packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The total length of the packet in <em class="parameter"><code>buffer</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659426"></a><h3>
<a name="gst-rtp-buffer-get-header-len"></a>gst_rtp_buffer_get_header_len ()</h3>
<a class="indexterm" name="id2659439"></a><pre class="programlisting">guint gst_rtp_buffer_get_header_len (GstBuffer *buffer);</pre>
<p>
Return the total length of the header in <em class="parameter"><code>buffer</code></em>. This include the length of
the fixed header, the CSRC list and the extension header.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The total length of the header in <em class="parameter"><code>buffer</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659514"></a><h3>
<a name="gst-rtp-buffer-get-version"></a>gst_rtp_buffer_get_version ()</h3>
<a class="indexterm" name="id2659528"></a><pre class="programlisting">guint8 gst_rtp_buffer_get_version (GstBuffer *buffer);</pre>
<p>
Get the version number of the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The version of <em class="parameter"><code>buffer</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659600"></a><h3>
<a name="gst-rtp-buffer-set-version"></a>gst_rtp_buffer_set_version ()</h3>
<a class="indexterm" name="id2659614"></a><pre class="programlisting">void gst_rtp_buffer_set_version (GstBuffer *buffer,
guint8 version);</pre>
<p>
Set the version of the RTP packet in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>version</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>version</code></em> :</span></td>
<td> the new version
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659698"></a><h3>
<a name="gst-rtp-buffer-get-padding"></a>gst_rtp_buffer_get_padding ()</h3>
<a class="indexterm" name="id2659712"></a><pre class="programlisting">gboolean gst_rtp_buffer_get_padding (GstBuffer *buffer);</pre>
<p>
Check if the padding bit is set on the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE if <em class="parameter"><code>buffer</code></em> has the padding bit set.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659784"></a><h3>
<a name="gst-rtp-buffer-set-padding"></a>gst_rtp_buffer_set_padding ()</h3>
<a class="indexterm" name="id2659798"></a><pre class="programlisting">void gst_rtp_buffer_set_padding (GstBuffer *buffer,
gboolean padding);</pre>
<p>
Set the padding bit on the RTP packet in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>padding</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>padding</code></em> :</span></td>
<td> the new padding
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659882"></a><h3>
<a name="gst-rtp-buffer-pad-to"></a>gst_rtp_buffer_pad_to ()</h3>
<a class="indexterm" name="id2659895"></a><pre class="programlisting">void gst_rtp_buffer_pad_to (GstBuffer *buffer,
guint len);</pre>
<p>
Set the amount of padding in the RTP packet in <em class="parameter"><code>buffer</code></em> to
<em class="parameter"><code>len</code></em>. If <em class="parameter"><code>len</code></em> is 0, the padding is removed.
</p>
<p>
NOTE: This function does not work correctly.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>len</code></em> :</span></td>
<td> the new amount of padding
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2659990"></a><h3>
<a name="gst-rtp-buffer-get-extension"></a>gst_rtp_buffer_get_extension ()</h3>
<a class="indexterm" name="id2660004"></a><pre class="programlisting">gboolean gst_rtp_buffer_get_extension (GstBuffer *buffer);</pre>
<p>
Check if the extension bit is set on the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE if <em class="parameter"><code>buffer</code></em> has the extension bit set.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2660077"></a><h3>
<a name="gst-rtp-buffer-set-extension"></a>gst_rtp_buffer_set_extension ()</h3>
<a class="indexterm" name="id2660090"></a><pre class="programlisting">void gst_rtp_buffer_set_extension (GstBuffer *buffer,
gboolean extension);</pre>
<p>
Set the extension bit on the RTP packet in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>extension</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>extension</code></em> :</span></td>
<td> the new extension
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2660175"></a><h3>
<a name="gst-rtp-buffer-get-extension-data"></a>gst_rtp_buffer_get_extension_data ()</h3>
<a class="indexterm" name="id2660192"></a><pre class="programlisting">gboolean gst_rtp_buffer_get_extension_data (GstBuffer *buffer,
guint16 *bits,
gpointer *data,
guint *wordlen);</pre>
<p>
Get the extension data. <em class="parameter"><code>bits</code></em> will contain the extension 16 bits of custom
data. <em class="parameter"><code>data</code></em> will point to the data in the extension and <em class="parameter"><code>wordlen</code></em> will contain
the length of <em class="parameter"><code>data</code></em> in 32 bits words.
</p>
<p>
If <em class="parameter"><code>buffer</code></em> did not contain an extension, this function will return <code class="literal">FALSE</code>
with <em class="parameter"><code>bits</code></em>, <em class="parameter"><code>data</code></em> and <em class="parameter"><code>wordlen</code></em> unchanged.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>bits</code></em> :</span></td>
<td> location for result bits
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>data</code></em> :</span></td>
<td> location for data
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>wordlen</code></em> :</span></td>
<td> location for length of <em class="parameter"><code>data</code></em> in 32 bits words
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE if <em class="parameter"><code>buffer</code></em> had the extension bit set.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.15
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2660401"></a><h3>
<a name="gst-rtp-buffer-get-ssrc"></a>gst_rtp_buffer_get_ssrc ()</h3>
<a class="indexterm" name="id2660414"></a><pre class="programlisting">guint32 gst_rtp_buffer_get_ssrc (GstBuffer *buffer);</pre>
<p>
Get the SSRC of the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the SSRC of <em class="parameter"><code>buffer</code></em> in host order.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2660487"></a><h3>
<a name="gst-rtp-buffer-set-ssrc"></a>gst_rtp_buffer_set_ssrc ()</h3>
<a class="indexterm" name="id2660501"></a><pre class="programlisting">void gst_rtp_buffer_set_ssrc (GstBuffer *buffer,
guint32 ssrc);</pre>
<p>
Set the SSRC on the RTP packet in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>ssrc</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>ssrc</code></em> :</span></td>
<td> the new SSRC
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2660585"></a><h3>
<a name="gst-rtp-buffer-get-csrc-count"></a>gst_rtp_buffer_get_csrc_count ()</h3>
<a class="indexterm" name="id2660598"></a><pre class="programlisting">guint8 gst_rtp_buffer_get_csrc_count (GstBuffer *buffer);</pre>
<p>
Get the CSRC count of the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the CSRC count of <em class="parameter"><code>buffer</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2660671"></a><h3>
<a name="gst-rtp-buffer-get-csrc"></a>gst_rtp_buffer_get_csrc ()</h3>
<a class="indexterm" name="id2660684"></a><pre class="programlisting">guint32 gst_rtp_buffer_get_csrc (GstBuffer *buffer,
guint8 idx);</pre>
<p>
Get the CSRC at index <em class="parameter"><code>idx</code></em> in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>idx</code></em> :</span></td>
<td> the index of the CSRC to get
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the CSRC at index <em class="parameter"><code>idx</code></em> in host order.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2660785"></a><h3>
<a name="gst-rtp-buffer-set-csrc"></a>gst_rtp_buffer_set_csrc ()</h3>
<a class="indexterm" name="id2660797"></a><pre class="programlisting">void gst_rtp_buffer_set_csrc (GstBuffer *buffer,
guint8 idx,
guint32 csrc);</pre>
<p>
Modify the CSRC at index <em class="parameter"><code>idx</code></em> in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>csrc</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>idx</code></em> :</span></td>
<td> the CSRC index to set
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>csrc</code></em> :</span></td>
<td> the CSRC in host order to set at <em class="parameter"><code>idx</code></em>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2660914"></a><h3>
<a name="gst-rtp-buffer-get-marker"></a>gst_rtp_buffer_get_marker ()</h3>
<a class="indexterm" name="id2660928"></a><pre class="programlisting">gboolean gst_rtp_buffer_get_marker (GstBuffer *buffer);</pre>
<p>
Check if the marker bit is set on the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> TRUE if <em class="parameter"><code>buffer</code></em> has the marker bit set.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661001"></a><h3>
<a name="gst-rtp-buffer-set-marker"></a>gst_rtp_buffer_set_marker ()</h3>
<a class="indexterm" name="id2661015"></a><pre class="programlisting">void gst_rtp_buffer_set_marker (GstBuffer *buffer,
gboolean marker);</pre>
<p>
Set the marker bit on the RTP packet in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>marker</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>marker</code></em> :</span></td>
<td> the new marker
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661099"></a><h3>
<a name="gst-rtp-buffer-get-payload-type"></a>gst_rtp_buffer_get_payload_type ()</h3>
<a class="indexterm" name="id2661112"></a><pre class="programlisting">guint8 gst_rtp_buffer_get_payload_type (GstBuffer *buffer);</pre>
<p>
Get the payload type of the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The payload type.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661179"></a><h3>
<a name="gst-rtp-buffer-set-payload-type"></a>gst_rtp_buffer_set_payload_type ()</h3>
<a class="indexterm" name="id2661193"></a><pre class="programlisting">void gst_rtp_buffer_set_payload_type (GstBuffer *buffer,
guint8 payload_type);</pre>
<p>
Set the payload type of the RTP packet in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>payload_type</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>payload_type</code></em> :</span></td>
<td> the new type
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661278"></a><h3>
<a name="gst-rtp-buffer-get-seq"></a>gst_rtp_buffer_get_seq ()</h3>
<a class="indexterm" name="id2661291"></a><pre class="programlisting">guint16 gst_rtp_buffer_get_seq (GstBuffer *buffer);</pre>
<p>
Get the sequence number of the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The sequence number in host order.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661358"></a><h3>
<a name="gst-rtp-buffer-set-seq"></a>gst_rtp_buffer_set_seq ()</h3>
<a class="indexterm" name="id2661372"></a><pre class="programlisting">void gst_rtp_buffer_set_seq (GstBuffer *buffer,
guint16 seq);</pre>
<p>
Set the sequence number of the RTP packet in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>seq</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>seq</code></em> :</span></td>
<td> the new sequence number
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661456"></a><h3>
<a name="gst-rtp-buffer-get-timestamp"></a>gst_rtp_buffer_get_timestamp ()</h3>
<a class="indexterm" name="id2661470"></a><pre class="programlisting">guint32 gst_rtp_buffer_get_timestamp (GstBuffer *buffer);</pre>
<p>
Get the timestamp of the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The timestamp in host order.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661537"></a><h3>
<a name="gst-rtp-buffer-set-timestamp"></a>gst_rtp_buffer_set_timestamp ()</h3>
<a class="indexterm" name="id2661551"></a><pre class="programlisting">void gst_rtp_buffer_set_timestamp (GstBuffer *buffer,
guint32 timestamp);</pre>
<p>
Set the timestamp of the RTP packet in <em class="parameter"><code>buffer</code></em> to <em class="parameter"><code>timestamp</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>timestamp</code></em> :</span></td>
<td> the new timestamp
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661635"></a><h3>
<a name="gst-rtp-buffer-get-payload-buffer"></a>gst_rtp_buffer_get_payload_buffer ()</h3>
<a class="indexterm" name="id2661650"></a><pre class="programlisting">GstBuffer* gst_rtp_buffer_get_payload_buffer (GstBuffer *buffer);</pre>
<p>
Create a buffer of the payload of the RTP packet in <em class="parameter"><code>buffer</code></em>. This function
will internally create a subbuffer of <em class="parameter"><code>buffer</code></em> so that a memcpy can be
avoided.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> A new buffer with the data of the payload.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661724"></a><h3>
<a name="gst-rtp-buffer-get-payload-subbuffer"></a>gst_rtp_buffer_get_payload_subbuffer ()</h3>
<a class="indexterm" name="id2661741"></a><pre class="programlisting">GstBuffer* gst_rtp_buffer_get_payload_subbuffer
(GstBuffer *buffer,
guint offset,
guint len);</pre>
<p>
Create a subbuffer of the payload of the RTP packet in <em class="parameter"><code>buffer</code></em>. <em class="parameter"><code>offset</code></em> bytes
are skipped in the payload and the subbuffer will be of size <em class="parameter"><code>len</code></em>.
If <em class="parameter"><code>len</code></em> is -1 the total payload starting from <em class="parameter"><code>offset</code></em> if subbuffered.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>offset</code></em> :</span></td>
<td> the offset in the payload
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>len</code></em> :</span></td>
<td> the length in the payload
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> A new buffer with the specified data of the payload.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.10
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661886"></a><h3>
<a name="gst-rtp-buffer-get-payload-len"></a>gst_rtp_buffer_get_payload_len ()</h3>
<a class="indexterm" name="id2661899"></a><pre class="programlisting">guint gst_rtp_buffer_get_payload_len (GstBuffer *buffer);</pre>
<p>
Get the length of the payload of the RTP packet in <em class="parameter"><code>buffer</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The length of the payload in <em class="parameter"><code>buffer</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2661972"></a><h3>
<a name="gst-rtp-buffer-get-payload"></a>gst_rtp_buffer_get_payload ()</h3>
<a class="indexterm" name="id2661986"></a><pre class="programlisting">gpointer gst_rtp_buffer_get_payload (GstBuffer *buffer);</pre>
<p>
Get a pointer to the payload data in <em class="parameter"><code>buffer</code></em>. This pointer is valid as long
as a reference to <em class="parameter"><code>buffer</code></em> is held.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>buffer</code></em> :</span></td>
<td> the buffer
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> A pointer to the payload data in <em class="parameter"><code>buffer</code></em>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2662065"></a><h3>
<a name="gst-rtp-buffer-default-clock-rate"></a>gst_rtp_buffer_default_clock_rate ()</h3>
<a class="indexterm" name="id2662082"></a><pre class="programlisting">guint32 gst_rtp_buffer_default_clock_rate (guint8 payload_type);</pre>
<p>
Get the default clock-rate for the static payload type <em class="parameter"><code>payload_type</code></em>.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>payload_type</code></em> :</span></td>
<td> the static payload type
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the default clock rate or -1 if the payload type is not static or
the clock-rate is undefined.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.13
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2662158"></a><h3>
<a name="gst-rtp-buffer-compare-seqnum"></a>gst_rtp_buffer_compare_seqnum ()</h3>
<a class="indexterm" name="id2662174"></a><pre class="programlisting">gint gst_rtp_buffer_compare_seqnum (guint16 seqnum1,
guint16 seqnum2);</pre>
<p>
Compare two sequence numbers, taking care of wraparounds.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>seqnum1</code></em> :</span></td>
<td> a sequence number
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>seqnum2</code></em> :</span></td>
<td> a sequence number
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> -1 if <em class="parameter"><code>seqnum1</code></em> is before <em class="parameter"><code>seqnum2</code></em>, 0 if they are equal or 1 if
<em class="parameter"><code>seqnum1</code></em> is bigger than <em class="parameter"><code>segnum2</code></em>.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.15
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id2662288"></a><h3>
<a name="gst-rtp-buffer-ext-timestamp"></a>gst_rtp_buffer_ext_timestamp ()</h3>
<a class="indexterm" name="id2662305"></a><pre class="programlisting">guint64 gst_rtp_buffer_ext_timestamp (guint64 *exttimestamp,
guint32 timestamp);</pre>
<p>
Update the <em class="parameter"><code>exttimestamp</code></em> field with <em class="parameter"><code>timestamp</code></em>. For the first call of the
method, <em class="parameter"><code>exttimestamp</code></em> should point to a location with a value of -1.
</p>
<p>
This function makes sure that the returned value is a constantly increasing
value even in the case where there is a timestamp wraparound.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><span class="term"><em class="parameter"><code>exttimestamp</code></em> :</span></td>
<td> a previous extended timestamp
</td>
</tr>
<tr>
<td><span class="term"><em class="parameter"><code>timestamp</code></em> :</span></td>
<td> a new timestamp
</td>
</tr>
<tr>
<td><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> The extended timestamp of <em class="parameter"><code>timestamp</code></em>.
</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.15
</p>
</div>
</div>
<div class="refsect1" lang="en">
<a name="id2662427"></a><h2>See Also</h2>
<a href="gst-plugins-base-libs-gstbasertppayload.html#GstBaseRTPPayload"><span class="type">GstBaseRTPPayload</span></a>, <a href="gst-plugins-base-libs-gstbasertpdepayload.html#GstBaseRTPDepayload"><span class="type">GstBaseRTPDepayload</span></a>, gstrtcpbuffer
</div>
</div>
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