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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>GStreamer Base Plugins 0.10 Plugins Reference Manual: audioconvert</title>
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                  <a href="#gst-plugins-base-plugins-audioconvert.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties"> <span class="dim">|</span> 
                  <a href="#gst-plugins-base-plugins-audioconvert.properties" class="shortcut">Properties</a></span>
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<div class="refentry">
<a name="gst-plugins-base-plugins-audioconvert"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-audioconvert.top_of_page"></a>audioconvert</span></h2>
<p>audioconvert — Convert audio to different formats</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-audioconvert.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type"><a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvertDithering" title="enum GstAudioConvertDithering"><span class="type">GstAudioConvertDithering</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvert--dithering" title="The “dithering” property">dithering</a></td>
<td class="property_flags">Read / Write</td>
</tr>
<tr>
<td class="property_type"><a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvertNoiseShaping" title="enum GstAudioConvertNoiseShaping"><span class="type">GstAudioConvertNoiseShaping</span></a></td>
<td class="property_name"><a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvert--noise-shaping" title="The “noise-shaping” property">noise-shaping</a></td>
<td class="property_flags">Read / Write</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstAudioConvert"></a><div class="refsect1">
<a name="gst-plugins-base-plugins-audioconvert.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvert-struct" title="struct GstAudioConvert">GstAudioConvert</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvertDithering" title="enum GstAudioConvertDithering">GstAudioConvertDithering</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvertNoiseShaping" title="enum GstAudioConvertNoiseShaping">GstAudioConvertNoiseShaping</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-audioconvert.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstObject.html">GstObject</a>
        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-0.10/GstElement.html">GstElement</a>
            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-0.10/GstBaseTransform.html">GstBaseTransform</a>
                <span class="lineart">╰──</span> GstAudioConvert
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-audioconvert.description"></a><h2>Description</h2>
<p>Audioconvert converts raw audio buffers between various possible formats.
It supports integer to float conversion, width/depth conversion,
signedness and endianness conversion and channel transformations.</p>
<div class="refsect2">
<a name="id-1.2.8.7.3"></a><h3>Example launch line</h3>
<div class="informalexample"><pre class="programlisting">
gst-launch -v -m audiotestsrc ! audioconvert ! audio/x-raw-int,channels=2,width=8,depth=8 ! level ! fakesink silent=TRUE
</pre></div> This pipeline converts audio to 8-bit.  The level element shows that
the output levels still match the one for a sine wave.
<div class="informalexample"><pre class="programlisting">
gst-launch -v -m audiotestsrc ! audioconvert ! vorbisenc ! fakesink silent=TRUE
</pre></div> The vorbis encoder takes float audio data instead of the integer data
generated by audiotestsrc.
</div>
<p>Last reviewed on 2006-03-02 (0.10.4)</p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<div class="refsect2">
<a name="id-1.2.8.7.4.1.1"></a><h3>Element Information</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">plugin</span></p></td>
<td>
            <a class="link" href="gst-plugins-base-plugins-plugin-audioconvert.html#plugin-audioconvert">audioconvert</a>
          </td>
</tr>
<tr>
<td><p><span class="term">author</span></p></td>
<td>Benjamin Otte &lt;otte@gnome.org&gt;</td>
</tr>
<tr>
<td><p><span class="term">class</span></p></td>
<td>Filter/Converter/Audio</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="id-1.2.8.7.4.1.2"></a><h3>Element Pads</h3>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>sink</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)64</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)32</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)32, depth=(int)[ 1, 32 ], signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)24, depth=(int)[ 1, 24 ], signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)16, depth=(int)[ 1, 16 ], signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)8, depth=(int)[ 1, 8 ], signed=(boolean){ true, false }</td>
</tr>
</tbody>
</table></div>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">name</span></p></td>
<td>src</td>
</tr>
<tr>
<td><p><span class="term">direction</span></p></td>
<td>source</td>
</tr>
<tr>
<td><p><span class="term">presence</span></p></td>
<td>always</td>
</tr>
<tr>
<td><p><span class="term">details</span></p></td>
<td>audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)64</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-float, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)32</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)32, depth=(int)[ 1, 32 ], signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)24, depth=(int)[ 1, 24 ], signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)16, depth=(int)[ 1, 16 ], signed=(boolean){ true, false }</td>
</tr>
<tr>
<td><p><span class="term"></span></p></td>
<td> audio/x-raw-int, rate=(int)[ 1, 2147483647 ], channels=(int)[ 1, 2147483647 ], endianness=(int){ 1234, 4321 }, width=(int)8, depth=(int)[ 1, 8 ], signed=(boolean){ true, false }</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<p>
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-audioconvert.functions_details"></a><h2>Functions</h2>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-audioconvert.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstAudioConvert-struct"></a><h3>struct GstAudioConvert</h3>
<pre class="programlisting">struct GstAudioConvert;</pre>
<p>The audioconvert object structure.</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioConvertDithering"></a><h3>enum GstAudioConvertDithering</h3>
<p>Set of available dithering methods when converting audio.</p>
<div class="refsect3">
<a name="id-1.2.8.9.3.4"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="DITHER-NONE:CAPS"></a>DITHER_NONE</p></td>
<td class="enum_member_description">
<p>No dithering</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="DITHER-RPDF:CAPS"></a>DITHER_RPDF</p></td>
<td class="enum_member_description">
<p>Rectangular dithering</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="DITHER-TPDF:CAPS"></a>DITHER_TPDF</p></td>
<td class="enum_member_description">
<p>Triangular dithering (default)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="DITHER-TPDF-HF:CAPS"></a>DITHER_TPDF_HF</p></td>
<td class="enum_member_description">
<p>High frequency triangular dithering</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioConvertNoiseShaping"></a><h3>enum GstAudioConvertNoiseShaping</h3>
<p>Set of available noise shaping methods</p>
<div class="refsect3">
<a name="id-1.2.8.9.4.4"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="enum_members_name">
<col class="enum_members_description">
<col width="200px" class="enum_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="enum_member_name"><p><a name="NOISE-SHAPING-NONE:CAPS"></a>NOISE_SHAPING_NONE</p></td>
<td class="enum_member_description">
<p>No noise shaping (default)</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="NOISE-SHAPING-ERROR-FEEDBACK:CAPS"></a>NOISE_SHAPING_ERROR_FEEDBACK</p></td>
<td class="enum_member_description">
<p>Error feedback</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="NOISE-SHAPING-SIMPLE:CAPS"></a>NOISE_SHAPING_SIMPLE</p></td>
<td class="enum_member_description">
<p>Simple 2-pole noise shaping</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="NOISE-SHAPING-MEDIUM:CAPS"></a>NOISE_SHAPING_MEDIUM</p></td>
<td class="enum_member_description">
<p>Medium 5-pole noise shaping</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="NOISE-SHAPING-HIGH:CAPS"></a>NOISE_SHAPING_HIGH</p></td>
<td class="enum_member_description">
<p>High 8-pole noise shaping</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="gst-plugins-base-plugins-audioconvert.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GstAudioConvert--dithering"></a><h3>The <code class="literal">“dithering”</code> property</h3>
<pre class="programlisting">  “dithering”                <a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvertDithering" title="enum GstAudioConvertDithering"><span class="type">GstAudioConvertDithering</span></a></pre>
<p>Selects between different dithering methods.</p>
<p>Flags: Read / Write</p>
<p>Default value: Triangular dithering (default)</p>
</div>
<hr>
<div class="refsect2">
<a name="GstAudioConvert--noise-shaping"></a><h3>The <code class="literal">“noise-shaping”</code> property</h3>
<pre class="programlisting">  “noise-shaping”            <a class="link" href="gst-plugins-base-plugins-audioconvert.html#GstAudioConvertNoiseShaping" title="enum GstAudioConvertNoiseShaping"><span class="type">GstAudioConvertNoiseShaping</span></a></pre>
<p>Selects between different noise shaping methods.</p>
<p>Flags: Read / Write</p>
<p>Default value: No noise shaping (default)</p>
</div>
</div>
</div>
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