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<div class="refentry">
<a name="gst-plugins-base-libs-gstpbutilscodecutils"></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-gstpbutilscodecutils.top_of_page"></a>gstpbutilscodecutils</span></h2>
<p>gstpbutilscodecutils — Miscellaneous codec-specific utility functions</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="gst-plugins-base-libs-gstpbutilscodecutils.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <gst/pbutils/codec-utils.h>
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-aac-get-sample-rate-from-index" title="gst_codec_utils_aac_get_sample_rate_from_index ()">gst_codec_utils_aac_get_sample_rate_from_index</a>
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> sr_idx</code></em>);
const <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-gstpbutilscodecutils.html#gst-codec-utils-aac-get-profile" title="gst_codec_utils_aac_get_profile ()">gst_codec_utils_aac_get_profile</a> (<em class="parameter"><code>const <span class="type">guint8</span> *audio_config</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);
const <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-gstpbutilscodecutils.html#gst-codec-utils-aac-get-level" title="gst_codec_utils_aac_get_level ()">gst_codec_utils_aac_get_level</a> (<em class="parameter"><code>const <span class="type">guint8</span> *audio_config</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</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-gstpbutilscodecutils.html#gst-codec-utils-aac-caps-set-level-and-profile" title="gst_codec_utils_aac_caps_set_level_and_profile ()">gst_codec_utils_aac_caps_set_level_and_profile</a>
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">guint8</span> *audio_config</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);
const <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-gstpbutilscodecutils.html#gst-codec-utils-h264-get-profile" title="gst_codec_utils_h264_get_profile ()">gst_codec_utils_h264_get_profile</a> (<em class="parameter"><code>const <span class="type">guint8</span> *sps</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);
const <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-gstpbutilscodecutils.html#gst-codec-utils-h264-get-level" title="gst_codec_utils_h264_get_level ()">gst_codec_utils_h264_get_level</a> (<em class="parameter"><code>const <span class="type">guint8</span> *sps</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</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-gstpbutilscodecutils.html#gst-codec-utils-h264-caps-set-level-and-profile" title="gst_codec_utils_h264_caps_set_level_and_profile ()">gst_codec_utils_h264_caps_set_level_and_profile</a>
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">guint8</span> *sps</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);
<span class="returnvalue">guint8</span> <a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-h264-get-level-idc" title="gst_codec_utils_h264_get_level_idc ()">gst_codec_utils_h264_get_level_idc</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> *level</code></em>);
const <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-gstpbutilscodecutils.html#gst-codec-utils-mpeg4video-get-profile" title="gst_codec_utils_mpeg4video_get_profile ()">gst_codec_utils_mpeg4video_get_profile</a>
(<em class="parameter"><code>const <span class="type">guint8</span> *vis_obj_seq</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);
const <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-gstpbutilscodecutils.html#gst-codec-utils-mpeg4video-get-level" title="gst_codec_utils_mpeg4video_get_level ()">gst_codec_utils_mpeg4video_get_level</a>
(<em class="parameter"><code>const <span class="type">guint8</span> *vis_obj_seq</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</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-gstpbutilscodecutils.html#gst-codec-utils-mpeg4video-caps-set-level-and-profile" title="gst_codec_utils_mpeg4video_caps_set_level_and_profile ()">gst_codec_utils_mpeg4video_caps_set_level_and_profile</a>
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">guint8</span> *vis_obj_seq</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilscodecutils.description"></a><h2>Description</h2>
<p>
</p>
<div class="refsect2">
<a name="idp29977376"></a><p>
Provides codec-specific ulility functions such as functions to provide the
codec profile and level in human-readable string form from header data.
</p>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilscodecutils.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-sample-rate-from-index"></a><h3>gst_codec_utils_aac_get_sample_rate_from_index ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> gst_codec_utils_aac_get_sample_rate_from_index
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> sr_idx</code></em>);</pre>
<p>
Translates the sample rate index found in AAC headers to the actual sample
rate.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>sr_idx</code></em> :</span></p></td>
<td>Sample rate index as from the AudioSpecificConfig (MPEG-4
container) or ADTS frame header</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The sample rate if <em class="parameter"><code>sr_idx</code></em> is valid, 0 otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-profile"></a><h3>gst_codec_utils_aac_get_profile ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gst_codec_utils_aac_get_profile (<em class="parameter"><code>const <span class="type">guint8</span> *audio_config</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Returns the profile of the given AAC stream as a string. The profile is
determined using the AudioObjectType field which is in the first 5 bits of
<em class="parameter"><code>audio_config</code></em>.
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
HE-AAC support has not yet been implemented.
</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>audio_config</code></em> :</span></p></td>
<td>a pointer to the AudioSpecificConfig as specified in the
Elementary Stream Descriptor (esds) in ISO/IEC 14496-1 (see
<a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-aac-get-level" title="gst_codec_utils_aac_get_level ()"><code class="function">gst_codec_utils_aac_get_level()</code></a> for a more details).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of <em class="parameter"><code>audio_config</code></em> in bytes</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The profile as a const string and <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the profile could not be
determined.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-get-level"></a><h3>gst_codec_utils_aac_get_level ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gst_codec_utils_aac_get_level (<em class="parameter"><code>const <span class="type">guint8</span> *audio_config</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Determines the level of a stream as defined in ISO/IEC 14496-3. For AAC LC
streams, the constraints from the AAC audio profile are applied. For AAC
Main, LTP, SSR and others, the Main profile is used.
</p>
<p>
The <em class="parameter"><code>audio_config</code></em> parameter follows the following format, starting from the
most significant bit of the first byte:
</p>
<p>
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>
Bit 0:4 contains the AudioObjectType
</p></li>
<li class="listitem"><p>
Bit 5:8 contains the sample frequency index (if this is 0xf, then the
next 24 bits define the actual sample frequency, and subsequent
fields are appropriately shifted).
</p></li>
<li class="listitem"><p>
Bit 9:12 contains the channel configuration
</p></li>
</ul></div>
<p>
</p>
<p>
</p>
<div class="note" style="margin-left: 0.5in; margin-right: 0.5in;">
<h3 class="title">Note</h3>
HE-AAC support has not yet been implemented.
</div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>audio_config</code></em> :</span></p></td>
<td>a pointer to the AudioSpecificConfig as specified in the
Elementary Stream Descriptor (esds) in ISO/IEC 14496-1.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of <em class="parameter"><code>audio_config</code></em> in bytes</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The level as a const string and <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the level could not be
determined.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-aac-caps-set-level-and-profile"></a><h3>gst_codec_utils_aac_caps_set_level_and_profile ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_codec_utils_aac_caps_set_level_and_profile
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">guint8</span> *audio_config</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Sets the level and profile on <em class="parameter"><code>caps</code></em> if it can be determined from
<em class="parameter"><code>audio_config</code></em>. See <a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-aac-get-level" title="gst_codec_utils_aac_get_level ()"><code class="function">gst_codec_utils_aac_get_level()</code></a> and
<a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-aac-get-profile" title="gst_codec_utils_aac_get_profile ()"><code class="function">gst_codec_utils_aac_get_profile()</code></a> for more details on the parameters.
<em class="parameter"><code>caps</code></em> must be audio/mpeg caps with an "mpegversion" field of either 2 or 4.
If mpegversion is 4, the "base-profile" field is also set in <em class="parameter"><code>caps</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> to which level and profile fields are to be added</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>audio_config</code></em> :</span></p></td>
<td>a pointer to the AudioSpecificConfig as specified in the
Elementary Stream Descriptor (esds) in ISO/IEC 14496-1 (see
below for a more details).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of <em class="parameter"><code>audio_config</code></em> in bytes</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> if the level and profile could be set, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h264-get-profile"></a><h3>gst_codec_utils_h264_get_profile ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gst_codec_utils_h264_get_profile (<em class="parameter"><code>const <span class="type">guint8</span> *sps</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Converts the profile indication (profile_idc) in the stream's
sequence parameter set into a string. The SPS is expected to have the
following format, as defined in the H.264 specification. The SPS is viewed
as a bitstream here, with bit 0 being the most significant bit of the first
byte.
</p>
<p>
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>Bit 0:7 - Profile indication</p></li>
<li class="listitem"><p>Bit 8 - constraint_set0_flag</p></li>
<li class="listitem"><p>Bit 9 - constraint_set1_flag</p></li>
<li class="listitem"><p>Bit 10 - constraint_set2_flag</p></li>
<li class="listitem"><p>Bit 11 - constraint_set3_flag</p></li>
<li class="listitem"><p>Bit 12 - constraint_set3_flag</p></li>
<li class="listitem"><p>Bit 13:15 - Reserved</p></li>
<li class="listitem"><p>Bit 16:24 - Level indication</p></li>
</ul></div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>sps</code></em> :</span></p></td>
<td>Pointer to the sequence parameter set for the stream.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of the data available in <em class="parameter"><code>sps</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The profile as a const string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is an error.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h264-get-level"></a><h3>gst_codec_utils_h264_get_level ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gst_codec_utils_h264_get_level (<em class="parameter"><code>const <span class="type">guint8</span> *sps</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Converts the level indication (level_idc) in the stream's
sequence parameter set into a string. The SPS is expected to have the
same format as for <a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-h264-get-profile" title="gst_codec_utils_h264_get_profile ()"><code class="function">gst_codec_utils_h264_get_profile()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>sps</code></em> :</span></p></td>
<td>Pointer to the sequence parameter set for the stream.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of the data available in <em class="parameter"><code>sps</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The level as a const string, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there is an error.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h264-caps-set-level-and-profile"></a><h3>gst_codec_utils_h264_caps_set_level_and_profile ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_codec_utils_h264_caps_set_level_and_profile
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">guint8</span> *sps</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Sets the level and profile in <em class="parameter"><code>caps</code></em> if it can be determined from <em class="parameter"><code>sps</code></em>. See
<a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-h264-get-level" title="gst_codec_utils_h264_get_level ()"><code class="function">gst_codec_utils_h264_get_level()</code></a> and <a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-h264-get-profile" title="gst_codec_utils_h264_get_profile ()"><code class="function">gst_codec_utils_h264_get_profile()</code></a>
for more details on the parameters.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> to which the level and profile are to be added</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>sps</code></em> :</span></p></td>
<td>Pointer to the sequence parameter set for the stream.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of the data available in <em class="parameter"><code>sps</code></em>.</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> if the level and profile could be set, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-h264-get-level-idc"></a><h3>gst_codec_utils_h264_get_level_idc ()</h3>
<pre class="programlisting"><span class="returnvalue">guint8</span> gst_codec_utils_h264_get_level_idc (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *level</code></em>);</pre>
<p>
Transform a level string from the caps into the level_idc
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>level</code></em> :</span></p></td>
<td>A level string from caps</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the level_idc or 0 if the level is unknown</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.36</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-mpeg4video-get-profile"></a><h3>gst_codec_utils_mpeg4video_get_profile ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gst_codec_utils_mpeg4video_get_profile
(<em class="parameter"><code>const <span class="type">guint8</span> *vis_obj_seq</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Converts the profile indication in the stream's visual object sequence into
a string. <em class="parameter"><code>vis_obj_seq</code></em> is expected to be the data following the visual
object sequence start code. Only the first byte
(profile_and_level_indication) is used.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>vis_obj_seq</code></em> :</span></p></td>
<td>Pointer to the visual object sequence for the stream.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of the data available in <em class="parameter"><code>sps</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The profile as a const string, or NULL if there is an error.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-mpeg4video-get-level"></a><h3>gst_codec_utils_mpeg4video_get_level ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gst_codec_utils_mpeg4video_get_level
(<em class="parameter"><code>const <span class="type">guint8</span> *vis_obj_seq</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Converts the level indication in the stream's visual object sequence into
a string. <em class="parameter"><code>vis_obj_seq</code></em> is expected to be the data following the visual
object sequence start code. Only the first byte
(profile_and_level_indication) is used.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>vis_obj_seq</code></em> :</span></p></td>
<td>Pointer to the visual object sequence for the stream.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of the data available in <em class="parameter"><code>sps</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The level as a const string, or NULL if there is an error.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
<hr>
<div class="refsect2">
<a name="gst-codec-utils-mpeg4video-caps-set-level-and-profile"></a><h3>gst_codec_utils_mpeg4video_caps_set_level_and_profile ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gst_codec_utils_mpeg4video_caps_set_level_and_profile
(<em class="parameter"><code><a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> *caps</code></em>,
<em class="parameter"><code>const <span class="type">guint8</span> *vis_obj_seq</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> len</code></em>);</pre>
<p>
Sets the level and profile in <em class="parameter"><code>caps</code></em> if it can be determined from
<em class="parameter"><code>vis_obj_seq</code></em>. See <a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-mpeg4video-get-level" title="gst_codec_utils_mpeg4video_get_level ()"><code class="function">gst_codec_utils_mpeg4video_get_level()</code></a> and
<a class="link" href="gst-plugins-base-libs-gstpbutilscodecutils.html#gst-codec-utils-mpeg4video-get-profile" title="gst_codec_utils_mpeg4video_get_profile ()"><code class="function">gst_codec_utils_mpeg4video_get_profile()</code></a> for more details on the
parameters.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>caps</code></em> :</span></p></td>
<td>the <a href="/usr/share/gtk-doc/html/gstreamer-0.10/gstreamer-GstCaps.html#GstCaps"><span class="type">GstCaps</span></a> to which the level and profile are to be added</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>vis_obj_seq</code></em> :</span></p></td>
<td>Pointer to the visual object sequence for the stream.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len</code></em> :</span></p></td>
<td>Length of the data available in <em class="parameter"><code>sps</code></em>.</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> if the level and profile could be set, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 0.10.31</p>
</div>
</div>
</div>
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