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<a name="gstreamer-GstUriHandler"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gstreamer-GstUriHandler.top_of_page"></a>GstUriHandler</span></h2>
<p>GstUriHandler — Interface to ease URI handling in plugins.</p>
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<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="gstreamer-GstUriHandler.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="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="returnvalue">GQuark</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-error-quark" title="gst_uri_error_quark ()">gst_uri_error_quark</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#GST-URI-TYPE-IS-VALID:CAPS" title="GST_URI_TYPE_IS_VALID()">GST_URI_TYPE_IS_VALID</a><span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-protocol-is-valid" title="gst_uri_protocol_is_valid ()">gst_uri_protocol_is_valid</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-protocol-is-supported" title="gst_uri_protocol_is_supported ()">gst_uri_protocol_is_supported</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-is-valid" title="gst_uri_is_valid ()">gst_uri_is_valid</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-has-protocol" title="gst_uri_has_protocol ()">gst_uri_has_protocol</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-get-protocol" title="gst_uri_get_protocol ()">gst_uri_get_protocol</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-get-location" title="gst_uri_get_location ()">gst_uri_get_location</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-construct" title="gst_uri_construct ()">gst_uri_construct</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-filename-to-uri" title="gst_filename_to_uri ()">gst_filename_to_uri</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GstElement.html" title="GstElement"><span class="returnvalue">GstElement</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-element-make-from-uri" title="gst_element_make_from_uri ()">gst_element_make_from_uri</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType"><span class="returnvalue">GstURIType</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-handler-get-uri-type" title="gst_uri_handler_get_uri_type ()">gst_uri_handler_get_uri_type</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * const *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-handler-get-protocols" title="gst_uri_handler_get_protocols ()">gst_uri_handler_get_protocols</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-handler-get-uri" title="gst_uri_handler_get_uri ()">gst_uri_handler_get_uri</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="gstreamer-GstUriHandler.html#gst-uri-handler-set-uri" title="gst_uri_handler_set_uri ()">gst_uri_handler_set_uri</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<a name="GstURIHandler"></a><div class="refsect1">
<a name="gstreamer-GstUriHandler.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"> </td>
<td class="function_name"><a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler-struct" title="GstURIHandler">GstURIHandler</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gstreamer-GstUriHandler.html#GstURIHandlerInterface" title="struct GstURIHandlerInterface">GstURIHandlerInterface</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType">GstURIType</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="gstreamer-GstUriHandler.html#GstURIError" title="enum GstURIError">GstURIError</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="gstreamer-GstUriHandler.html#GST-URI-NO-PORT:CAPS" title="GST_URI_NO_PORT">GST_URI_NO_PORT</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="gstreamer-GstUriHandler.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <a href="https://developer.gnome.org/gobject/unstable/GTypeModule.html">GInterface</a>
<span class="lineart">╰──</span> GstURIHandler
</pre>
</div>
<div class="refsect1">
<a name="gstreamer-GstUriHandler.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gst/gst.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="gstreamer-GstUriHandler.description"></a><h2>Description</h2>
<p>The <a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a> is an interface that is implemented by Source and Sink
<a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a> to unify handling of URI.</p>
<p>An application can use the following functions to quickly get an element
that handles the given URI for reading or writing
(<a class="link" href="gstreamer-GstUriHandler.html#gst-element-make-from-uri" title="gst_element_make_from_uri ()"><code class="function">gst_element_make_from_uri()</code></a>).</p>
<p>Source and Sink plugins should implement this interface when possible.</p>
</div>
<div class="refsect1">
<a name="gstreamer-GstUriHandler.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-uri-error-quark"></a><h3>gst_uri_error_quark ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Quarks.html#GQuark"><span class="returnvalue">GQuark</span></a>
gst_uri_error_quark (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
</div>
<hr>
<div class="refsect2">
<a name="GST-URI-TYPE-IS-VALID:CAPS"></a><h3>GST_URI_TYPE_IS_VALID()</h3>
<pre class="programlisting">#define GST_URI_TYPE_IS_VALID(type) ((type) == GST_URI_SRC || (type) == GST_URI_SINK)
</pre>
<p>Tests if the type direction is valid.</p>
<div class="refsect3">
<a name="id-1.3.57.9.3.5"></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>type</p></td>
<td class="parameter_description"><p>A <a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType"><span class="type">GstURIType</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-protocol-is-valid"></a><h3>gst_uri_protocol_is_valid ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_uri_protocol_is_valid (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *protocol</code></em>);</pre>
<p>Tests if the given string is a valid protocol identifier. Protocols
must consist of alphanumeric characters, '+', '-' and '.' and must
start with a alphabetic character. See RFC 3986 Section 3.1.</p>
<div class="refsect3">
<a name="id-1.3.57.9.4.5"></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>protocol</p></td>
<td class="parameter_description"><p>A string</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.4.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the string is a valid protocol identifier, <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-protocol-is-supported"></a><h3>gst_uri_protocol_is_supported ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_uri_protocol_is_supported (<em class="parameter"><code>const <a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType"><span class="type">GstURIType</span></a> type</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *protocol</code></em>);</pre>
<p>Checks if an element exists that supports the given URI protocol. Note
that a positive return value does not imply that a subsequent call to
<a class="link" href="gstreamer-GstUriHandler.html#gst-element-make-from-uri" title="gst_element_make_from_uri ()"><code class="function">gst_element_make_from_uri()</code></a> is guaranteed to work.</p>
<div class="refsect3">
<a name="id-1.3.57.9.5.5"></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>type</p></td>
<td class="parameter_description"><p>Whether to check for a source or a sink</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>protocol</p></td>
<td class="parameter_description"><p>Protocol that should be checked for (e.g. "http" or "smb")</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.5.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-is-valid"></a><h3>gst_uri_is_valid ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_uri_is_valid (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>);</pre>
<p>Tests if the given string is a valid URI identifier. URIs start with a valid
scheme followed by ":" and maybe a string identifying the location.</p>
<div class="refsect3">
<a name="id-1.3.57.9.6.5"></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>uri</p></td>
<td class="parameter_description"><p>A URI string</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.6.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the string is a valid URI</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-has-protocol"></a><h3>gst_uri_has_protocol ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_uri_has_protocol (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *protocol</code></em>);</pre>
<p>Checks if the protocol of a given valid URI matches <em class="parameter"><code>protocol</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.57.9.7.5"></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>uri</p></td>
<td class="parameter_description"><p>a URI string</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>protocol</p></td>
<td class="parameter_description"><p>a protocol string (e.g. "http")</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.7.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the protocol matches.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-get-protocol"></a><h3>gst_uri_get_protocol ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_uri_get_protocol (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>);</pre>
<p>Extracts the protocol out of a given valid URI. The returned string must be
freed using <a href="https://developer.gnome.org/glib/unstable/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a>.</p>
<div class="refsect3">
<a name="id-1.3.57.9.8.5"></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>uri</p></td>
<td class="parameter_description"><p>A URI string</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.8.6"></a><h4>Returns</h4>
<p> The protocol for this URI.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-get-location"></a><h3>gst_uri_get_location ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_uri_get_location (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>);</pre>
<p>Extracts the location out of a given valid URI, ie. the protocol and "://"
are stripped from the URI, which means that the location returned includes
the hostname if one is specified. The returned string must be freed using
<a href="https://developer.gnome.org/glib/unstable/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a>.</p>
<p>Free-function: g_free</p>
<div class="refsect3">
<a name="id-1.3.57.9.9.6"></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>uri</p></td>
<td class="parameter_description"><p>A URI string</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.9.7"></a><h4>Returns</h4>
<p> the location for this URI. Returns <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the
URI isn't valid. If the URI does not contain a location, an empty
string is returned. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-construct"></a><h3>gst_uri_construct ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_uri_construct (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *protocol</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *location</code></em>);</pre>
<p>Constructs a URI for a given valid protocol and location.</p>
<p>Free-function: g_free</p>
<div class="refsect3">
<a name="id-1.3.57.9.10.6"></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>protocol</p></td>
<td class="parameter_description"><p>Protocol for URI</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>location</p></td>
<td class="parameter_description"><p> Location for URI. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.10.7"></a><h4>Returns</h4>
<p> a new string for this URI. Returns <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the
given URI protocol is not valid, or the given location is <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-filename-to-uri"></a><h3>gst_filename_to_uri ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_filename_to_uri (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *filename</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Similar to <a href="https://developer.gnome.org/glib/unstable/glib-URI-Functions.html#g-filename-to-uri"><code class="function">g_filename_to_uri()</code></a>, but attempts to handle relative file paths
as well. Before converting <em class="parameter"><code>filename</code></em>
into an URI, it will be prefixed by
the current working directory if it is a relative path, and then the path
will be canonicalised so that it doesn't contain any './' or '../' segments.</p>
<p>On Windows <span class="type">filename</span> should be in UTF-8 encoding.</p>
<div class="refsect3">
<a name="id-1.3.57.9.11.6"></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>filename</p></td>
<td class="parameter_description"><p>absolute or relative file name path</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>pointer to error, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.11.7"></a><h4>Returns</h4>
<p> newly-allocated URI string, or NULL on error. The caller must
free the URI string with <a href="https://developer.gnome.org/glib/unstable/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when no longer needed.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-element-make-from-uri"></a><h3>gst_element_make_from_uri ()</h3>
<pre class="programlisting"><a class="link" href="GstElement.html" title="GstElement"><span class="returnvalue">GstElement</span></a> *
gst_element_make_from_uri (<em class="parameter"><code>const <a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType"><span class="type">GstURIType</span></a> type</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *elementname</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates an element for handling the given URI.</p>
<div class="refsect3">
<a name="id-1.3.57.9.12.5"></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>type</p></td>
<td class="parameter_description"><p>Whether to create a source or a sink</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uri</p></td>
<td class="parameter_description"><p>URI to create an element for</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>elementname</p></td>
<td class="parameter_description"><p> Name of created element, can be <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p> address where to store error information, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.12.6"></a><h4>Returns</h4>
<p> a new element or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if none could be created. </p>
<p><span class="annotation">[<acronym title="Alias for transfer none, used for objects with floating refs."><span class="acronym">transfer floating</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-handler-get-uri-type"></a><h3>gst_uri_handler_get_uri_type ()</h3>
<pre class="programlisting"><a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType"><span class="returnvalue">GstURIType</span></a>
gst_uri_handler_get_uri_type (<em class="parameter"><code><a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a> *handler</code></em>);</pre>
<p>Gets the type of the given URI handler</p>
<div class="refsect3">
<a name="id-1.3.57.9.13.5"></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>handler</p></td>
<td class="parameter_description"><p>A <a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.13.6"></a><h4>Returns</h4>
<p> the <a class="link" href="gstreamer-GstUriHandler.html#GstURIType" title="enum GstURIType"><span class="type">GstURIType</span></a> of the URI handler.
Returns <a class="link" href="gstreamer-GstUriHandler.html#GST-URI-UNKNOWN:CAPS"><span class="type">GST_URI_UNKNOWN</span></a> if the <em class="parameter"><code>handler</code></em>
isn't implemented correctly.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-handler-get-protocols"></a><h3>gst_uri_handler_get_protocols ()</h3>
<pre class="programlisting">const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * const *
gst_uri_handler_get_protocols (<em class="parameter"><code><a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a> *handler</code></em>);</pre>
<p>Gets the list of protocols supported by <em class="parameter"><code>handler</code></em>
. This list may not be
modified.</p>
<div class="refsect3">
<a name="id-1.3.57.9.14.5"></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>handler</p></td>
<td class="parameter_description"><p>A <a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.14.6"></a><h4>Returns</h4>
<p> the
supported protocols. Returns <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the <em class="parameter"><code>handler</code></em>
isn't
implemented properly, or the <em class="parameter"><code>handler</code></em>
doesn't support any
protocols. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>][<acronym title="Generics and defining elements of containers and arrays."><span class="acronym">element-type</span></acronym> utf8][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-handler-get-uri"></a><h3>gst_uri_handler_get_uri ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
gst_uri_handler_get_uri (<em class="parameter"><code><a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a> *handler</code></em>);</pre>
<p>Gets the currently handled URI.</p>
<div class="refsect3">
<a name="id-1.3.57.9.15.5"></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>handler</p></td>
<td class="parameter_description"><p>A <a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.15.6"></a><h4>Returns</h4>
<p> the URI currently handled by
the <em class="parameter"><code>handler</code></em>
. Returns <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if there are no URI currently
handled. The returned string must be freed with <a href="https://developer.gnome.org/glib/unstable/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when no
longer needed. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gst-uri-handler-set-uri"></a><h3>gst_uri_handler_set_uri ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_uri_handler_set_uri (<em class="parameter"><code><a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a> *handler</code></em>,
<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *uri</code></em>,
<em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Tries to set the URI of the given handler.</p>
<div class="refsect3">
<a name="id-1.3.57.9.16.5"></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>handler</p></td>
<td class="parameter_description"><p>A <a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uri</p></td>
<td class="parameter_description"><p>URI to set</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p> address where to store a <a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> in case of
an error, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.57.9.16.6"></a><h4>Returns</h4>
<p> <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the URI was set successfully, else <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="gstreamer-GstUriHandler.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstURIHandler-struct"></a><h3>GstURIHandler</h3>
<pre class="programlisting">typedef struct _GstURIHandler GstURIHandler;</pre>
<p>Opaque <a class="link" href="gstreamer-GstUriHandler.html#GstURIHandler"><span class="type">GstURIHandler</span></a> structure.</p>
</div>
<hr>
<div class="refsect2">
<a name="GstURIHandlerInterface"></a><h3>struct GstURIHandlerInterface</h3>
<pre class="programlisting">struct GstURIHandlerInterface {
GTypeInterface parent;
/* vtable */
/* querying capabilities */
GstURIType (* get_type) (GType type);
const gchar * const * (* get_protocols) (GType type);
/* using the interface */
gchar * (* get_uri) (GstURIHandler * handler);
gboolean (* set_uri) (GstURIHandler * handler,
const gchar * uri,
GError ** error);
};
</pre>
<p>Any <a class="link" href="GstElement.html" title="GstElement"><span class="type">GstElement</span></a> using this interface should implement these methods.</p>
<div class="refsect3">
<a name="id-1.3.57.10.3.5"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody>
<tr>
<td class="struct_member_name"><p><a href="https://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#GTypeInterface"><span class="type">GTypeInterface</span></a> <em class="structfield"><code><a name="GstURIHandlerInterface.parent"></a>parent</code></em>;</p></td>
<td class="struct_member_description"><p>The parent interface type</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstURIHandlerInterface.get-type"></a>get_type</code></em> ()</p></td>
<td class="struct_member_description"><p>Method to tell whether the element handles source or sink URI.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstURIHandlerInterface.get-protocols"></a>get_protocols</code></em> ()</p></td>
<td class="struct_member_description"><p>Method to return the list of protocols handled by the element.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstURIHandlerInterface.get-uri"></a>get_uri</code></em> ()</p></td>
<td class="struct_member_description"><p>Method to return the URI currently handled by the element.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
<tr>
<td class="struct_member_name"><p><em class="structfield"><code><a name="GstURIHandlerInterface.set-uri"></a>set_uri</code></em> ()</p></td>
<td class="struct_member_description"><p>Method to set a new URI.</p></td>
<td class="struct_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstURIType"></a><h3>enum GstURIType</h3>
<p>The different types of URI direction.</p>
<div class="refsect3">
<a name="id-1.3.57.10.4.4"></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="GST-URI-UNKNOWN:CAPS"></a>GST_URI_UNKNOWN</p></td>
<td class="enum_member_description">
<p>The URI direction is unknown</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-URI-SINK:CAPS"></a>GST_URI_SINK</p></td>
<td class="enum_member_description">
<p>The URI is a consumer.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-URI-SRC:CAPS"></a>GST_URI_SRC</p></td>
<td class="enum_member_description">
<p>The URI is a producer.</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="GstURIError"></a><h3>enum GstURIError</h3>
<p>Different URI-related errors that can occur.</p>
<div class="refsect3">
<a name="id-1.3.57.10.5.4"></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="GST-URI-ERROR-UNSUPPORTED-PROTOCOL:CAPS"></a>GST_URI_ERROR_UNSUPPORTED_PROTOCOL</p></td>
<td class="enum_member_description">
<p>The protocol is not supported</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-URI-ERROR-BAD-URI:CAPS"></a>GST_URI_ERROR_BAD_URI</p></td>
<td class="enum_member_description">
<p>There was a problem with the URI</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-URI-ERROR-BAD-STATE:CAPS"></a>GST_URI_ERROR_BAD_STATE</p></td>
<td class="enum_member_description">
<p>Could not set or change the URI because the
URI handler was in a state where that is not possible or not permitted</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="GST-URI-ERROR-BAD-REFERENCE:CAPS"></a>GST_URI_ERROR_BAD_REFERENCE</p></td>
<td class="enum_member_description">
<p>There was a problem with the entity that
the URI references</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
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<div class="refsect2">
<a name="GST-URI-NO-PORT:CAPS"></a><h3>GST_URI_NO_PORT</h3>
<pre class="programlisting">#define GST_URI_NO_PORT 0
</pre>
<p>Value for <a class="link" href="gstreamer-GstUri.html#GstUri" title="GstUri"><span class="type">GstUri</span></a>.port to indicate no port number.</p>
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