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<title>GStreamer Bad Plugins 0.10 Library Reference Manual: GstSurfaceConverter</title>
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<a href="#gst-plugins-bad-libs-GstSurfaceConverter.description" class="shortcut">Description</a></span>
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<a name="gst-plugins-bad-libs-GstSurfaceConverter"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="gst-plugins-bad-libs-GstSurfaceConverter.top_of_page"></a>GstSurfaceConverter</span></h2>
<p>GstSurfaceConverter — Interface for <a class="link" href="gst-plugins-bad-libs-GstSurfaceBuffer.html#GstSurfaceBuffer" title="GstSurfaceBuffer"><span class="type">GstSurfaceBuffer</span></a> convertion</p>
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<a name="gst-plugins-bad-libs-GstSurfaceConverter.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
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<a href="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GType"><span class="returnvalue">GType</span></a>
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<td class="function_name">
<a class="link" href="gst-plugins-bad-libs-GstSurfaceConverter.html#gst-surface-converter-get-type" title="gst_surface_converter_get_type ()">gst_surface_converter_get_type</a> <span class="c_punctuation">()</span>
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<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-bad-libs-GstSurfaceConverter.html#gst-surface-converter-upload" title="gst_surface_converter_upload ()">gst_surface_converter_upload</a> <span class="c_punctuation">()</span>
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<a name="gst-plugins-bad-libs-GstSurfaceConverter.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
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<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="gst-plugins-bad-libs-GstSurfaceConverter.html#GstSurfaceConverter" title="GstSurfaceConverter">GstSurfaceConverter</a></td>
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<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="gst-plugins-bad-libs-GstSurfaceConverter.html#GstSurfaceConverterInterface" title="struct GstSurfaceConverterInterface">GstSurfaceConverterInterface</a></td>
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<div class="refsect1">
<a name="gst-plugins-bad-libs-GstSurfaceConverter.description"></a><h2>Description</h2>
<p>Objects implementing this interface are used as a convertion context. This
allow element optimizing the upload by keeping required resources between
uploads. The context must be discarded when the pipeline goes to
<span class="type">GST_STATE_NULL</span> or renewed whenever the caps are changed.</p>
<div class="note">
The GstVideoContext interface is unstable API and may change in future.
One can define GST_USE_UNSTABLE_API to acknowledge and avoid this warning.
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<div class="refsect2">
<a name="id-1.2.5.8.5.4"></a><h3>Example uploading to GL texture</h3>
<div class="informalexample">
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<td class="listing_lines" align="right"><pre>1
2
3
4</pre></td>
<td class="listing_code"><pre class="programlisting"><span class="keyword">if</span> <span class="gtkdoc opt">(</span><span class="function"><a href="/usr/share/gtk-doc/html/glib/glib-Miscellaneous-Macros.html#G-UNLIKELY:CAPS">G_UNLIKELY</a></span> <span class="gtkdoc opt">(</span>priv<span class="gtkdoc opt">-></span>converter <span class="gtkdoc opt">==</span> NULL<span class="gtkdoc opt">))</span>
priv<span class="gtkdoc opt">-></span>converter <span class="gtkdoc opt">=</span> <span class="function"><a href="../gst-plugins-bad-libs-0.10/gst-plugins-bad-libs-GstSurfaceBuffer.html#gst-surface-buffer-create-converter">gst_surface_buffer_create_converter</a></span> <span class="gtkdoc opt">(</span>surface<span class="gtkdoc opt">,</span> <span class="string">"opengl"</span><span class="gtkdoc opt">, &</span>value<span class="gtkdoc opt">);</span>
<span class="function">gst_surface_converter_uplaod</span> <span class="gtkdoc opt">(</span>priv<span class="gtkdoc opt">-></span>converter<span class="gtkdoc opt">,</span> surface<span class="gtkdoc opt">);</span></pre></td>
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<div class="refsect1">
<a name="gst-plugins-bad-libs-GstSurfaceConverter.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gst-surface-converter-get-type"></a><h3>gst_surface_converter_get_type ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GType"><span class="returnvalue">GType</span></a>
gst_surface_converter_get_type (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
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<div class="refsect2">
<a name="gst-surface-converter-upload"></a><h3>gst_surface_converter_upload ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
gst_surface_converter_upload (<em class="parameter"><code><a class="link" href="gst-plugins-bad-libs-GstSurfaceConverter.html#GstSurfaceConverter" title="GstSurfaceConverter"><span class="type">GstSurfaceConverter</span></a> *converter</code></em>,
<em class="parameter"><code><a class="link" href="gst-plugins-bad-libs-GstSurfaceBuffer.html#GstSurfaceBuffer" title="GstSurfaceBuffer"><span class="type">GstSurfaceBuffer</span></a> *buffer</code></em>);</pre>
<p>Convert and uploads the <a class="link" href="gst-plugins-bad-libs-GstSurfaceBuffer.html#GstSurfaceBuffer" title="GstSurfaceBuffer"><span class="type">GstSurfaceBuffer</span></a> to the converter destination.</p>
<div class="refsect3">
<a name="id-1.2.5.8.6.3.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
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<col width="150px" class="parameters_name">
<col class="parameters_description">
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<td class="parameter_name"><p>converter</p></td>
<td class="parameter_description"><p>a <a class="link" href="gst-plugins-bad-libs-GstSurfaceConverter.html#GstSurfaceConverter" title="GstSurfaceConverter"><span class="type">GstSurfaceConverter</span></a></p></td>
<td class="parameter_annotations"> </td>
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<td class="parameter_name"><p>buffer</p></td>
<td class="parameter_description"><p>the <a class="link" href="gst-plugins-bad-libs-GstSurfaceBuffer.html#GstSurfaceBuffer" title="GstSurfaceBuffer"><span class="type">GstSurfaceBuffer</span></a> to upload</p></td>
<td class="parameter_annotations"> </td>
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<div class="refsect3">
<a name="id-1.2.5.8.6.3.6"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><span class="type">TRUE</span></a> on success, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><span class="type">FALSE</span></a> otherwise</p>
<p></p>
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<div class="refsect1">
<a name="gst-plugins-bad-libs-GstSurfaceConverter.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GstSurfaceConverter"></a><h3>GstSurfaceConverter</h3>
<pre class="programlisting">typedef struct _GstSurfaceConverter GstSurfaceConverter;</pre>
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<div class="refsect2">
<a name="GstSurfaceConverterInterface"></a><h3>struct GstSurfaceConverterInterface</h3>
<pre class="programlisting">struct GstSurfaceConverterInterface {
GTypeInterface parent;
gboolean (*upload) (GstSurfaceConverter *converter,
GstSurfaceBuffer *buffer);
};
</pre>
<p><a class="link" href="gst-plugins-bad-libs-GstSurfaceConverter.html#GstSurfaceConverterInterface" title="struct GstSurfaceConverterInterface"><span class="type">GstSurfaceConverterInterface</span></a> interface.</p>
<div class="refsect3">
<a name="id-1.2.5.8.7.3.5"></a><h4>Members</h4>
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<td class="struct_member_name"><p><a href="/usr/share/gtk-doc/html/gobject/gobject-Type-Information.html#GTypeInterface"><span class="type">GTypeInterface</span></a> <em class="structfield"><code><a name="GstSurfaceConverterInterface.parent"></a>parent</code></em>;</p></td>
<td class="struct_member_description"><p>parent interface type.</p></td>
<td class="struct_member_annotations"> </td>
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<td class="struct_member_name"><p><em class="structfield"><code><a name="GstSurfaceConverterInterface.upload"></a>upload</code></em> ()</p></td>
<td class="struct_member_description"><p>vmethod to upload <a class="link" href="gst-plugins-bad-libs-GstSurfaceBuffer.html#GstSurfaceBuffer" title="GstSurfaceBuffer"><span class="type">GstSurfaceBuffer</span></a>.</p></td>
<td class="struct_member_annotations"> </td>
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