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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>RBTrackTransferQueue: Rhythmbox Development Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
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<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#RBTrackTransferQueue.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#RBTrackTransferQueue.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties">  <span class="dim">|</span> 
                  <a href="#RBTrackTransferQueue.properties" class="shortcut">Properties</a></span><span id="nav_signals">  <span class="dim">|</span> 
                  <a href="#RBTrackTransferQueue.signals" class="shortcut">Signals</a></span>
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<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="ch05.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
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</tr></table>
<div class="refentry">
<a name="RBTrackTransferQueue"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="RBTrackTransferQueue.top_of_page"></a>RBTrackTransferQueue</span></h2>
<p>RBTrackTransferQueue — track transfer queue and surrounding junk</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="RBTrackTransferQueue.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="returnvalue">RBTrackTransferQueue</span></a> *
</td>
<td class="function_name">
<a class="link" href="RBTrackTransferQueue.html#rb-track-transfer-queue-new" title="rb_track_transfer_queue_new ()">rb_track_transfer_queue_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="RBTrackTransferQueue.html#rb-track-transfer-queue-start-batch" title="rb_track_transfer_queue_start_batch ()">rb_track_transfer_queue_start_batch</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="RBTrackTransferQueue.html#rb-track-transfer-queue-cancel-batch" title="rb_track_transfer_queue_cancel_batch ()">rb_track_transfer_queue_cancel_batch</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="../glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
</td>
<td class="function_name">
<a class="link" href="RBTrackTransferQueue.html#rb-track-transfer-queue-find-batch-by-source" title="rb_track_transfer_queue_find_batch_by_source ()">rb_track_transfer_queue_find_batch_by_source</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.properties"></a><h2>Properties</h2>
<div class="informaltable"><table class="informaltable" 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="RBTrackTransferBatch.html" title="RBTrackTransferBatch"><span class="type">RBTrackTransferBatch</span></a> *</td>
<td class="property_name"><a class="link" href="RBTrackTransferQueue.html#RBTrackTransferQueue--batch" title="The “batch” property">batch</a></td>
<td class="property_flags">Read</td>
</tr>
<tr>
<td class="property_type">
<a class="link" href="RBShell.html" title="RBShell"><span class="type">RBShell</span></a> *</td>
<td class="property_name"><a class="link" href="RBTrackTransferQueue.html#RBTrackTransferQueue--shell" title="The “shell” property">shell</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.signals"></a><h2>Signals</h2>
<div class="informaltable"><table class="informaltable" border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody>
<tr>
<td class="signal_type"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a></td>
<td class="signal_name"><a class="link" href="RBTrackTransferQueue.html#RBTrackTransferQueue-missing-plugins" title="The “missing-plugins” signal">missing-plugins</a></td>
<td class="signal_flags"><a href="../gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="RBTrackTransferQueue.html#RBTrackTransferQueue-transfer-progress" title="The “transfer-progress” signal">transfer-progress</a></td>
<td class="signal_flags"><a href="../gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" 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="RBTrackTransferQueue.html#RBTrackTransferQueue-struct" title="struct RBTrackTransferQueue">RBTrackTransferQueue</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="RBTrackTransferQueue.html#RBTrackTransferQueueClass" title="struct RBTrackTransferQueueClass">RBTrackTransferQueueClass</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="../gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
    <span class="lineart">╰──</span> RBTrackTransferQueue
</pre>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.description"></a><h2>Description</h2>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="rb-track-transfer-queue-new"></a><h3>rb_track_transfer_queue_new ()</h3>
<pre class="programlisting"><a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="returnvalue">RBTrackTransferQueue</span></a> *
rb_track_transfer_queue_new (<em class="parameter"><code><a class="link" href="RBShell.html" title="RBShell"><span class="type">RBShell</span></a> *shell</code></em>);</pre>
<p>Creates the <a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a> instance</p>
<div class="refsect3">
<a name="rb-track-transfer-queue-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>shell</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBShell.html" title="RBShell"><span class="type">RBShell</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-track-transfer-queue-new.returns"></a><h4>Returns</h4>
<p> the <a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-track-transfer-queue-start-batch"></a><h3>rb_track_transfer_queue_start_batch ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
rb_track_transfer_queue_start_batch (<em class="parameter"><code><a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a> *queue</code></em>,
                                     <em class="parameter"><code><a class="link" href="RBTrackTransferBatch.html" title="RBTrackTransferBatch"><span class="type">RBTrackTransferBatch</span></a> *batch</code></em>);</pre>
<p>Adds a new transfer batch to the transfer queue; if the queue is currently
empty, the transfer will start immediately, but not before the call returns.</p>
<div class="refsect3">
<a name="rb-track-transfer-queue-start-batch.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>queue</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>batch</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBTrackTransferBatch.html" title="RBTrackTransferBatch"><span class="type">RBTrackTransferBatch</span></a> to add to the queue</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-track-transfer-queue-cancel-batch"></a><h3>rb_track_transfer_queue_cancel_batch ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
rb_track_transfer_queue_cancel_batch (<em class="parameter"><code><a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a> *queue</code></em>,
                                      <em class="parameter"><code><a class="link" href="RBTrackTransferBatch.html" title="RBTrackTransferBatch"><span class="type">RBTrackTransferBatch</span></a> *batch</code></em>);</pre>
<p>Removes a transfer batch from the queue.  If an entry from the
batch is currently being transferred, the transfer will be
aborted.</p>
<div class="refsect3">
<a name="rb-track-transfer-queue-cancel-batch.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>queue</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>batch</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBTrackTransferBatch.html" title="RBTrackTransferBatch"><span class="type">RBTrackTransferBatch</span></a> to cancel, or NULL for the current batch</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-track-transfer-queue-find-batch-by-source"></a><h3>rb_track_transfer_queue_find_batch_by_source ()</h3>
<pre class="programlisting"><a href="../glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
rb_track_transfer_queue_find_batch_by_source
                               (<em class="parameter"><code><a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a> *queue</code></em>,
                                <em class="parameter"><code><a class="link" href="RBSource.html" title="RBSource"><span class="type">RBSource</span></a> *source</code></em>);</pre>
<p>Finds all transfer batches where <em class="parameter"><code>source</code></em>
 is the source or destination.
This should be used to wait for transfers to finish (or cancel them) before
ejecting a device.  The transfer batches are returned in the order they're
found in the queue, so waiting for the <em class="parameter"><code>RBTrackTransferBatch</code></em>
::complete signal
on the last one is sufficient to wait for them all to finish.</p>
<div class="refsect3">
<a name="rb-track-transfer-queue-find-batch-by-source.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>queue</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>source</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBSource.html" title="RBSource"><span class="type">RBSource</span></a> to search for</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-track-transfer-queue-find-batch-by-source.returns"></a><h4>Returns</h4>
<p><a href="../glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> of <a class="link" href="RBTrackTransferBatch.html" title="RBTrackTransferBatch"><span class="type">RBTrackTransferBatch</span></a> objects, not referenced. </p>
<p><span class="annotation">[<a href="http://foldoc.org/element-type"><span class="acronym">element-type</span></a> RBTrackTransferBatch][<a href="http://foldoc.org/transfer%20container"><span class="acronym">transfer container</span></a>]</span></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="RBTrackTransferQueue-struct"></a><h3>struct RBTrackTransferQueue</h3>
<pre class="programlisting">struct RBTrackTransferQueue;</pre>
</div>
<hr>
<div class="refsect2">
<a name="RBTrackTransferQueueClass"></a><h3>struct RBTrackTransferQueueClass</h3>
<pre class="programlisting">struct RBTrackTransferQueueClass {
	GObjectClass parent_class;

	/* signals */
	void (*transfer_progress) (RBTrackTransferQueue *queue,
					 int done,
					 int total,
					 double fraction,
					 int time_left);
};
</pre>
</div>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="RBTrackTransferQueue--batch"></a><h3>The <code class="literal">“batch”</code> property</h3>
<pre class="programlisting">  “batch”                    <a class="link" href="RBTrackTransferBatch.html" title="RBTrackTransferBatch"><span class="type">RBTrackTransferBatch</span></a> *</pre>
<p>The current <a class="link" href="RBTrackTransferBatch.html" title="RBTrackTransferBatch"><span class="type">RBTrackTransferBatch</span></a> being processed</p>
<p>Flags: Read</p>
</div>
<hr>
<div class="refsect2">
<a name="RBTrackTransferQueue--shell"></a><h3>The <code class="literal">“shell”</code> property</h3>
<pre class="programlisting">  “shell”                    <a class="link" href="RBShell.html" title="RBShell"><span class="type">RBShell</span></a> *</pre>
<p>The <a class="link" href="RBShell.html" title="RBShell"><span class="type">RBShell</span></a></p>
<p>Flags: Read / Write / Construct Only</p>
</div>
</div>
<div class="refsect1">
<a name="RBTrackTransferQueue.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="RBTrackTransferQueue-missing-plugins"></a><h3>The <code class="literal">“missing-plugins”</code> signal</h3>
<pre class="programlisting"><a href="../glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
user_function (<a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a> *queue,
               <a href="../glib/glib-String-Utility-Functions.html#GStrv"><span class="type">GStrv</span></a>                 details,
               <a href="../glib/glib-String-Utility-Functions.html#GStrv"><span class="type">GStrv</span></a>                 descriptions,
               <a href="../gobject/gobject-Closures.html#GClosure"><span class="type">GClosure</span></a>             *closure,
               <a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>              user_data)</pre>
<p>Emitted to request installation of one or more encoder plugins for a
destination media format.  When the closure included in the signal args
is called, the transfer batch will be started.</p>
<div class="refsect3">
<a name="RBTrackTransferQueue-missing-plugins.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>queue</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>details</p></td>
<td class="parameter_description"><p>the list of plugin detail strings describing the missing plugins</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>descriptions</p></td>
<td class="parameter_description"><p>the list of descriptions for the missing plugins</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>closure</p></td>
<td class="parameter_description"><p>a <a href="../gobject/gobject-Closures.html#GClosure"><span class="type">GClosure</span></a> to be called when the plugin installation is complete</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="../gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBTrackTransferQueue-transfer-progress"></a><h3>The <code class="literal">“transfer-progress”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a> *queue,
               <a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  done,
               <a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  total,
               <a href="../glib/glib-Basic-Types.html#gdouble"><span class="type">gdouble</span></a>               fraction,
               <a href="../glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                  time_left,
               <a href="../glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>              user_data)</pre>
<p>Emitted regularly to convey progress information.  At the end of any given
transfer batch, there will be one signal emission with <em class="parameter"><code>done</code></em>
 == <em class="parameter"><code>total</code></em>
 and
<em class="parameter"><code>fraction</code></em>
 == 1.0.</p>
<div class="refsect3">
<a name="RBTrackTransferQueue-transfer-progress.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>queue</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBTrackTransferQueue.html" title="RBTrackTransferQueue"><span class="type">RBTrackTransferQueue</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>done</p></td>
<td class="parameter_description"><p>the number of entries transferred</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>total</p></td>
<td class="parameter_description"><p>the total number of entries in the batch</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>fraction</p></td>
<td class="parameter_description"><p>the fraction of the batch that has been transferred</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>time_left</p></td>
<td class="parameter_description"><p>the estimated remaining time (in seconds)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: <a href="../gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
</div>
</div>
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