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<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 class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilscodecutils.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a>
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">guint8</span>
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<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> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilscodecutils.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <gst/pbutils/codec-utils.h>
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilscodecutils.description"></a><h2>Description</h2>
<div class="refsect2">
<a name="id-1.2.16.5.5.2"></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>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilscodecutils.functions_details"></a><h2>Functions</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="refsect3">
<a name="id-1.2.16.5.6.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>sr_idx</p></td>
<td class="parameter_description"><p>Sample rate index as from the AudioSpecificConfig (MPEG-4
container) or ADTS frame header</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.2.6"></a><h4>Returns</h4>
<p> The sample rate if <em class="parameter"><code>sr_idx</code></em>
is valid, 0 otherwise.</p>
<p></p>
</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>
<div class="note">
HE-AAC support has not yet been implemented.
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.3.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>audio_config</p></td>
<td class="parameter_description"><p>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).</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of <em class="parameter"><code>audio_config</code></em>
in bytes</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.3.7"></a><h4>Returns</h4>
<p> 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.</p>
<p></p>
</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>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-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>
<div class="note">
HE-AAC support has not yet been implemented.
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.4.8"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>audio_config</p></td>
<td class="parameter_description"><p>a pointer to the AudioSpecificConfig as specified in the
Elementary Stream Descriptor (esds) in ISO/IEC 14496-1.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of <em class="parameter"><code>audio_config</code></em>
in bytes</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.4.9"></a><h4>Returns</h4>
<p> 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.</p>
<p></p>
</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="refsect3">
<a name="id-1.2.16.5.6.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>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</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>audio_config</p></td>
<td class="parameter_description"><p>a pointer to the AudioSpecificConfig as specified in the
Elementary Stream Descriptor (esds) in ISO/IEC 14496-1 (see
below for a more details).</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of <em class="parameter"><code>audio_config</code></em>
in bytes</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.5.6"></a><h4>Returns</h4>
<p> <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.</p>
<p></p>
</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>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-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>
<div class="refsect3">
<a name="id-1.2.16.5.6.6.6"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>sps</p></td>
<td class="parameter_description"><p>Pointer to the sequence parameter set for the stream.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.6.7"></a><h4>Returns</h4>
<p> 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.</p>
<p></p>
</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="refsect3">
<a name="id-1.2.16.5.6.7.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>sps</p></td>
<td class="parameter_description"><p>Pointer to the sequence parameter set for the stream.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.7.6"></a><h4>Returns</h4>
<p> 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.</p>
<p></p>
</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="refsect3">
<a name="id-1.2.16.5.6.8.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>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</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>sps</p></td>
<td class="parameter_description"><p>Pointer to the sequence parameter set for the stream.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.8.6"></a><h4>Returns</h4>
<p> <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.</p>
<p></p>
</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="refsect3">
<a name="id-1.2.16.5.6.9.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>level</p></td>
<td class="parameter_description"><p>A level string from caps</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.9.6"></a><h4>Returns</h4>
<p> the level_idc or 0 if the level is unknown</p>
<p></p>
</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="refsect3">
<a name="id-1.2.16.5.6.10.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>vis_obj_seq</p></td>
<td class="parameter_description"><p>Pointer to the visual object sequence for the stream.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.10.6"></a><h4>Returns</h4>
<p> The profile as a const string, or NULL if there is an error.</p>
<p></p>
</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="refsect3">
<a name="id-1.2.16.5.6.11.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>vis_obj_seq</p></td>
<td class="parameter_description"><p>Pointer to the visual object sequence for the stream.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.11.6"></a><h4>Returns</h4>
<p> The level as a const string, or NULL if there is an error.</p>
<p></p>
</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="refsect3">
<a name="id-1.2.16.5.6.12.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>caps</p></td>
<td class="parameter_description"><p>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</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>vis_obj_seq</p></td>
<td class="parameter_description"><p>Pointer to the visual object sequence for the stream.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>len</p></td>
<td class="parameter_description"><p>Length of the data available in <em class="parameter"><code>sps</code></em>
.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.16.5.6.12.6"></a><h4>Returns</h4>
<p> <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.</p>
<p></p>
</div>
<p class="since">Since 0.10.31</p>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstpbutilscodecutils.other_details"></a><h2>Types and Values</h2>
</div>
</div>
<div class="footer">
<hr>
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