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| <div class="refentry"> |
| <a name="gst-plugins-good-plugins-id3demux"></a><div class="titlepage"></div> |
| <div class="refnamediv"><table width="100%"><tr> |
| <td valign="top"> |
| <h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-id3demux.top_of_page"></a>id3demux</span></h2> |
| <p>id3demux — Read and output ID3v1 and ID3v2 tags while demuxing the contents</p> |
| </td> |
| <td class="gallery_image" valign="top" align="right"></td> |
| </tr></table></div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-id3demux.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 href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td> |
| <td class="property_name"><a class="link" href="gst-plugins-good-plugins-id3demux.html#GstID3Demux--prefer-v1" title="The “prefer-v1” property">prefer-v1</a></td> |
| <td class="property_flags">Read / Write / Construct</td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <a name="GstID3Demux"></a><div class="refsect1"> |
| <a name="gst-plugins-good-plugins-id3demux.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-good-plugins-id3demux.html#GstID3Demux-struct" title="struct GstID3Demux">GstID3Demux</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-id3demux.object-hierarchy"></a><h2>Object Hierarchy</h2> |
| <pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a> |
| <span class="lineart">╰──</span> <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstObject.html">GstObject</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/GstElement.html">GstElement</a> |
| <span class="lineart">╰──</span> <a href="http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gsttagdemux.html#GstTagDemux">GstTagDemux</a> |
| <span class="lineart">╰──</span> GstID3Demux |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-id3demux.description"></a><h2>Description</h2> |
| <p>id3demux accepts data streams with either (or both) ID3v2 regions at the |
| start, or ID3v1 at the end. The mime type of the data between the tag blocks |
| is detected using typefind functions, and the appropriate output mime type |
| set on outgoing buffers. </p> |
| <p>The element is only able to read ID3v1 tags from a seekable stream, because |
| they are at the end of the stream. That is, when get_range mode is supported |
| by the upstream elements. If get_range operation is available, id3demux makes |
| it available downstream. This means that elements which require get_range |
| mode, such as wavparse, can operate on files containing ID3 tag information.</p> |
| <p>This id3demux element replaced an older element with the same name which |
| relied on libid3tag from the MAD project.</p> |
| <div class="refsect2"> |
| <a name="id-1.2.65.7.5"></a><h3>Example launch line</h3> |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1</pre></td> |
| <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> filesrc location<span class="gtkdoc opt">=</span>file<span class="gtkdoc opt">.</span>mp3 <span class="gtkdoc opt">!</span> id3demux <span class="gtkdoc opt">!</span> fakesink <span class="gtkdoc opt">-</span>t</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| This pipeline should read any available ID3 tag information and output it. |
| The contents of the file inside the ID3 tag regions should be detected, and |
| the appropriate mime type set on buffers produced from id3demux. |
| </div> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.65.7.6.1"></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-good-plugins-plugin-id3demux.html#plugin-id3demux">id3demux</a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term">author</span></p></td> |
| <td>Jan Schmidt <thaytan@mad.scientist.com></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">class</span></p></td> |
| <td>Codec/Demuxer/Metadata</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="id-1.2.65.7.6.2"></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>application/x-id3</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>ANY</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| </div> |
| <p> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-id3demux.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-id3demux.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstID3Demux-struct"></a><h3>struct GstID3Demux</h3> |
| <pre class="programlisting">struct GstID3Demux;</pre> |
| <p> |
| </p> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-id3demux.property-details"></a><h2>Property Details</h2> |
| <div class="refsect2"> |
| <a name="GstID3Demux--prefer-v1"></a><h3>The <code class="literal">“prefer-v1”</code> property</h3> |
| <pre class="programlisting"> “prefer-v1” <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre> |
| <p>Prefer tags from ID3v1 tag at end of file when both ID3v1 and ID3v2 tags are present.</p> |
| <p>Flags: Read / Write / Construct</p> |
| <p>Default value: FALSE</p> |
| </div> |
| </div> |
| </div> |
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