rhythmbox-doc 3.3-1ubuntu7 / usr / share / gtk-doc / html / rhythmbox / RBPlayer.html

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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>RBPlayer: Rhythmbox Development Reference Manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="Rhythmbox Development Reference Manual">
<link rel="up" href="ch01.html" title="Backends">
<link rel="prev" href="ch01.html" title="Backends">
<link rel="next" href="RBPlayerGstDataTee.html" title="RBPlayerGstDataTee">
<meta name="generator" content="GTK-Doc V1.25 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<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="#RBPlayer.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#RBPlayer.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_signals">  <span class="dim">|</span> 
                  <a href="#RBPlayer.signals" class="shortcut">Signals</a></span>
</td>
<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="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="ch01.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="RBPlayerGstDataTee.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="RBPlayer"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="RBPlayer.top_of_page"></a>RBPlayer</span></h2>
<p>RBPlayer — playback backend interface</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="RBPlayer.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="RBPlayer.html" title="RBPlayer"><span class="returnvalue">RBPlayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="RBPlayer.html#rb-player-new" title="rb_player_new ()">rb_player_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<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="RBPlayer.html#rb-player-open" title="rb_player_open ()">rb_player_open</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<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="RBPlayer.html#rb-player-opened" title="rb_player_opened ()">rb_player_opened</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<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="RBPlayer.html#rb-player-close" title="rb_player_close ()">rb_player_close</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<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="RBPlayer.html#rb-player-play" title="rb_player_play ()">rb_player_play</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="RBPlayer.html#rb-player-pause" title="rb_player_pause ()">rb_player_pause</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<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="RBPlayer.html#rb-player-playing" title="rb_player_playing ()">rb_player_playing</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="RBPlayer.html#rb-player-set-volume" title="rb_player_set_volume ()">rb_player_set_volume</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">float</span>
</td>
<td class="function_name">
<a class="link" href="RBPlayer.html#rb-player-get-volume" title="rb_player_get_volume ()">rb_player_get_volume</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<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="RBPlayer.html#rb-player-seekable" title="rb_player_seekable ()">rb_player_seekable</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="RBPlayer.html#rb-player-set-time" title="rb_player_set_time ()">rb_player_set_time</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="returnvalue">gint64</span></a>
</td>
<td class="function_name">
<a class="link" href="RBPlayer.html#rb-player-get-time" title="rb_player_get_time ()">rb_player_get_time</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<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="RBPlayer.html#rb-player-multiple-open" title="rb_player_multiple_open ()">rb_player_multiple_open</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RBPlayer.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"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="RBPlayer.html#RBPlayer-buffering" title="The “buffering” signal">buffering</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/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="RBPlayer.html#RBPlayer-eos" title="The “eos” signal">eos</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-NO-RECURSE:CAPS">No Recursion</a></td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="RBPlayer.html#RBPlayer-error" title="The “error” signal">error</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-NO-RECURSE:CAPS">No Recursion</a></td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="RBPlayer.html#RBPlayer-event" title="The “event” signal">event</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-DETAILED:CAPS">Has Details</a></td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="RBPlayer.html#RBPlayer-image" title="The “image” signal">image</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/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="RBPlayer.html#RBPlayer-info" title="The “info” signal">info</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/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="RBPlayer.html#RBPlayer-playing-stream" title="The “playing-stream” signal">playing-stream</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/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="RBPlayer.html#RBPlayer-redirect" title="The “redirect” signal">redirect</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/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="RBPlayer.html#RBPlayer-tick" title="The “tick” signal">tick</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/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="RBPlayer.html#RBPlayer-volume-changed" title="The “volume-changed” signal">volume-changed</a></td>
<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RBPlayer.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"> </td>
<td class="function_name"><a class="link" href="RBPlayer.html#RBPlayer-struct" title="RBPlayer">RBPlayer</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="RBPlayer.html#RBPlayerIface" title="struct RBPlayerIface">RBPlayerIface</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="RBPlayer.html#RBPlayerPlayType" title="enum RBPlayerPlayType">RBPlayerPlayType</a></td>
</tr>
<tr>
<td class="datatype_keyword">enum</td>
<td class="function_name"><a class="link" href="RBPlayer.html#RBPlayerError" title="enum RBPlayerError">RBPlayerError</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RBPlayer.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-Enumeration-and-Flag-Types.html">GEnum</a>
    <span class="lineart">╰──</span> RBPlayerError
    <a href="/usr/share/gtk-doc/html/gobject/GTypeModule.html">GInterface</a>
    <span class="lineart">╰──</span> RBPlayer
</pre>
</div>
<div class="refsect1">
<a name="RBPlayer.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;rb-player.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="RBPlayer.description"></a><h2>Description</h2>
<p>This is the interface implemented by the rhythmbox playback backends.
It allows the caller to control playback (open, play, pause, close), 
seek (set_time), control volume (get_volume, set_volume)
and receive playback state information (get_time, various signals).</p>
<p>The playback interface allows for multiple streams to be playing (or at
least open) concurrently. The caller associates some data with each stream
it opens (<a class="link" href="RBPlayer.html#rb-player-open" title="rb_player_open ()"><span class="type">rb_player_open</span></a>), which is included in the paramters with each
signal emitted. The caller should not assume that the new stream is playing
immediately upon returning from <a class="link" href="RBPlayer.html#rb-player-play" title="rb_player_play ()"><span class="type">rb_player_play</span></a>. Instead, it should use
the 'playing-stream' signal to determine that.</p>
<p>The player implementation should emit signals for metadata extracted from the
stream using the 'info' signal</p>
<p>While playing, the player implementation should emit 'tick' signals frequently
enough to update an elapsed/remaining time display consistently.  The duration
value included in tick signal emissions is used to prepare the next stream before
the current stream reaches EOS, so it should be updated for each emission to account
for variable bitrate streams that produce inaccurate duration estimates early on.</p>
<p>When playing a stream from the network, the player can report buffering status
using the 'buffering' signal.  The value included in the signal indicates the
percentage of the buffer that has been filled.</p>
<p>The 'event' signal can be used to communicate events from the player to the application.
For GStreamer-based player implementations, events are triggered by elements in the
pipeline posting application messages.  The name of the message becomes the name of the
event.</p>
</div>
<div class="refsect1">
<a name="RBPlayer.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="rb-player-new"></a><h3>rb_player_new ()</h3>
<pre class="programlisting"><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="returnvalue">RBPlayer</span></a> *
rb_player_new (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> want_crossfade</code></em>,
               <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a new player object.</p>
<div class="refsect3">
<a name="rb-player-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>want_crossfade</p></td>
<td class="parameter_description"><p>if TRUE, try to use a backend that supports
crossfading and other track transitions.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>returns error information</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-new.returns"></a><h4>Returns</h4>
<p> new player object. </p>
<p><span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-open"></a><h3>rb_player_open ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
rb_player_open (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>,
                <em class="parameter"><code>const <span class="type">char</span> *uri</code></em>,
                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> stream_data</code></em>,
                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Datasets.html#GDestroyNotify"><span class="type">GDestroyNotify</span></a> stream_data_destroy</code></em>,
                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Prepares a stream for playback.  Depending on the player
implementation, this may stop any existing stream being
played.  The stream preparation process may continue
asynchronously, in which case errors may be reported from
<a class="link" href="RBPlayer.html#rb-player-play" title="rb_player_play ()"><span class="type">rb_player_play</span></a> or using the 'error' signal.</p>
<div class="refsect3">
<a name="rb-player-open.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</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 open</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>arbitrary data to associate with the stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data_destroy</p></td>
<td class="parameter_description"><p>function to call to destroy the stream data</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>returns error information</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-open.returns"></a><h4>Returns</h4>
<p> TRUE if the stream preparation was not unsuccessful</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-opened"></a><h3>rb_player_opened ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
rb_player_opened (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>);</pre>
<p>Determines whether a stream has been prepared for playback.</p>
<div class="refsect3">
<a name="rb-player-opened.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-opened.returns"></a><h4>Returns</h4>
<p> TRUE if a stream is prepared for playback</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-close"></a><h3>rb_player_close ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
rb_player_close (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>,
                 <em class="parameter"><code>const <span class="type">char</span> *uri</code></em>,
                 <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>If a URI is specified, this will close the stream corresponding
to that URI and free any resources related resources.  If <em class="parameter"><code>uri</code></em>

is NULL, this will close all streams.</p>
<p>If no streams remain open after this call, the audio device will
be released.</p>
<div class="refsect3">
<a name="rb-player-close.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uri</p></td>
<td class="parameter_description"><p>optionally, the URI of the stream to close</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>returns error information</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-close.returns"></a><h4>Returns</h4>
<p> TRUE if a stream was found and closed</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-play"></a><h3>rb_player_play ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
rb_player_play (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>,
                <em class="parameter"><code><a class="link" href="RBPlayer.html#RBPlayerPlayType" title="enum RBPlayerPlayType"><span class="type">RBPlayerPlayType</span></a> play_type</code></em>,
                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> crossfade</code></em>,
                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Starts playback of the most recently opened stream.
if <em class="parameter"><code>play_type</code></em>
 is <a class="link" href="RBPlayer.html#RB-PLAYER-PLAY-CROSSFADE:CAPS"><span class="type">RB_PLAYER_PLAY_CROSSFADE</span></a>, the player
may attempt to crossfade the new stream with any existing
streams.  If it does this, the it will use <em class="parameter"><code>crossfade</code></em>
 as the
duration of the fade.</p>
<p>If <em class="parameter"><code>play_type</code></em>
 is <a class="link" href="RBPlayer.html#RB-PLAYER-PLAY-AFTER-EOS:CAPS"><span class="type">RB_PLAYER_PLAY_AFTER_EOS</span></a>, the player may
attempt to start the stream immediately after the current
playing stream reaches EOS.  This may or may not result in
the phenomemon known as 'gapless playback'.</p>
<p>If <em class="parameter"><code>play_type</code></em>
 is <a class="link" href="RBPlayer.html#RB-PLAYER-PLAY-REPLACE:CAPS"><span class="type">RB_PLAYER_PLAY_REPLACE</span></a>, the player will stop any
existing stream before starting the new stream. It may do
this anyway, regardless of the value of <em class="parameter"><code>play_type</code></em>
.</p>
<p>The 'playing-stream' signal will be emitted when the new stream
is actually playing. This may be before or after control returns
to the caller.</p>
<div class="refsect3">
<a name="rb-player-play.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>play_type</p></td>
<td class="parameter_description"><p>requested playback start type</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>crossfade</p></td>
<td class="parameter_description"><p>requested crossfade duration (nanoseconds)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>returns error information</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-play.returns"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if playback started successfully</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-pause"></a><h3>rb_player_pause ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
rb_player_pause (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>);</pre>
<p>Pauses playback of the most recently started stream.  Any
streams being faded out may continue until the fade is
complete.</p>
<div class="refsect3">
<a name="rb-player-pause.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-playing"></a><h3>rb_player_playing ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
rb_player_playing (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>);</pre>
<p>Determines whether the player is currently playing a stream.
A stream is playing if it's not paused or being faded out.</p>
<div class="refsect3">
<a name="rb-player-playing.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a>.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-playing.returns"></a><h4>Returns</h4>
<p> TRUE if playing</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-set-volume"></a><h3>rb_player_set_volume ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
rb_player_set_volume (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>,
                      <em class="parameter"><code><span class="type">float</span> volume</code></em>);</pre>
<p>Adjusts the output volume level.  This affects all streams.
The player may use a hardware volume control to implement
this volume adjustment.</p>
<div class="refsect3">
<a name="rb-player-set-volume.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>volume</p></td>
<td class="parameter_description"><p>new output volume level</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-get-volume"></a><h3>rb_player_get_volume ()</h3>
<pre class="programlisting"><span class="returnvalue">float</span>
rb_player_get_volume (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>);</pre>
<p>Returns the current volume level, between 0.0 and 1.0.</p>
<div class="refsect3">
<a name="rb-player-get-volume.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-get-volume.returns"></a><h4>Returns</h4>
<p> current output volume level</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-seekable"></a><h3>rb_player_seekable ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
rb_player_seekable (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>);</pre>
<p>Determines whether seeking is supported for the current stream.</p>
<div class="refsect3">
<a name="rb-player-seekable.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-seekable.returns"></a><h4>Returns</h4>
<p> TRUE if the current stream is seekable</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-set-time"></a><h3>rb_player_set_time ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
rb_player_set_time (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>,
                    <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a> newtime</code></em>);</pre>
<p>Attempts to seek in the current stream.  The player
may ignore this if the stream is not seekable.
The seek may take place asynchronously.</p>
<div class="refsect3">
<a name="rb-player-set-time.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>newtime</p></td>
<td class="parameter_description"><p>seek target position in seconds</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-get-time"></a><h3>rb_player_get_time ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="returnvalue">gint64</span></a>
rb_player_get_time (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>);</pre>
<p>Returns the current playback for the current stream in nanoseconds.</p>
<div class="refsect3">
<a name="rb-player-get-time.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-get-time.returns"></a><h4>Returns</h4>
<p> playback position</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rb-player-multiple-open"></a><h3>rb_player_multiple_open ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
rb_player_multiple_open (<em class="parameter"><code><a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player</code></em>);</pre>
<p>Determines whether the player supports multiple open streams.</p>
<div class="refsect3">
<a name="rb-player-multiple-open.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>player</p></td>
<td class="parameter_description"><p>a <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="rb-player-multiple-open.returns"></a><h4>Returns</h4>
<p> TRUE if multiple open is supported</p>
</div>
</div>
</div>
<div class="refsect1">
<a name="RBPlayer.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="RBPlayer-struct"></a><h3>RBPlayer</h3>
<pre class="programlisting">typedef struct _RBPlayer RBPlayer;</pre>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayerIface"></a><h3>struct RBPlayerIface</h3>
<pre class="programlisting">struct RBPlayerIface {
	GTypeInterface g_iface;

	/* virtual functions */
	gboolean        (*open)			(RBPlayer *player,
						 const char *uri,
						 gpointer stream_data,
						 GDestroyNotify stream_data_destroy,
						 GError **error);
	gboolean (*opened)		(RBPlayer *player);
	gboolean        (*close)		(RBPlayer *player,
						 const char *uri,
						 GError **error);

	gboolean (*play)			(RBPlayer *player,
						 RBPlayerPlayType play_type,
						 gint64 crossfade,
						 GError **error);
	void		(*pause)		(RBPlayer *player);
	gboolean (*playing)		(RBPlayer *player);

	void		(*set_volume)		(RBPlayer *player,
						 float volume);
	float		(*get_volume)		(RBPlayer *player);

	gboolean (*seekable)		(RBPlayer *player);
	void		(*set_time)		(RBPlayer *player,
						 gint64 newtime);
	gint64		(*get_time)		(RBPlayer *player);
	gboolean (*multiple_open) (RBPlayer *player);


	/* signals */
	void		(*playing_stream) (RBPlayer *player,
						 gpointer stream_data);
	void		(*eos)			(RBPlayer *player,
						 gpointer stream_data,
						 gboolean early);
	void		(*info)			(RBPlayer *player,
						 gpointer stream_data,
						 RBMetaDataField field,
						 GValue *value);
	void		(*buffering)		(RBPlayer *player,
						 gpointer stream_data,
						 guint progress);
	void		(*error)           	(RBPlayer *player,
						 gpointer stream_data,
						 GError *error);
	void		(*tick)            	(RBPlayer *player,
						 gpointer stream_data,
						 gint64 elapsed,
						 gint64 duration);
	void		(*event)		(RBPlayer *player,
						 gpointer stream_data,
						 gpointer data);
	void		(*volume_changed) (RBPlayer *player,
						 float volume);
	void		(*image)		(RBPlayer *player,
						 gpointer stream_data,
						 GdkPixbuf *image);
	void		(*redirect)		(RBPlayer *player,
						 gpointer stream_data,
						 const gchar *uri);
};
</pre>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayerPlayType"></a><h3>enum RBPlayerPlayType</h3>
<div class="refsect3">
<a name="RBPlayerPlayType.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" 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="RB-PLAYER-PLAY-REPLACE:CAPS"></a>RB_PLAYER_PLAY_REPLACE</p></td>
<td class="enum_member_description">
<p>Replace the existing stream</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="RB-PLAYER-PLAY-AFTER-EOS:CAPS"></a>RB_PLAYER_PLAY_AFTER_EOS</p></td>
<td class="enum_member_description">
<p>Start the new stream after the current stream ends</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="RB-PLAYER-PLAY-CROSSFADE:CAPS"></a>RB_PLAYER_PLAY_CROSSFADE</p></td>
<td class="enum_member_description">
<p>Crossfade between the existing stream and the new stream</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayerError"></a><h3>enum RBPlayerError</h3>
<div class="refsect3">
<a name="RBPlayerError.members"></a><h4>Members</h4>
<div class="informaltable"><table class="informaltable" 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="RB-PLAYER-ERROR-NO-AUDIO:CAPS"></a>RB_PLAYER_ERROR_NO_AUDIO</p></td>
<td class="enum_member_description">
<p>Audio playback not available</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="RB-PLAYER-ERROR-GENERAL:CAPS"></a>RB_PLAYER_ERROR_GENERAL</p></td>
<td class="enum_member_description">
<p>Nonspecific error</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="RB-PLAYER-ERROR-INTERNAL:CAPS"></a>RB_PLAYER_ERROR_INTERNAL</p></td>
<td class="enum_member_description">
<p>Internal error</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
<tr>
<td class="enum_member_name"><p><a name="RB-PLAYER-ERROR-NOT-FOUND:CAPS"></a>RB_PLAYER_ERROR_NOT_FOUND</p></td>
<td class="enum_member_description">
<p>The resource could not be found</p>
</td>
<td class="enum_member_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="RBPlayer.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="RBPlayer-buffering"></a><h3>The <code class="literal">“buffering”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  stream_data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a>     progress,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'buffering' signal is emitted while a stream is paused so
that a buffer can be filled.  The progress value typically varies
from 0 to 100, and once it reaches 100, playback resumes.</p>
<div class="refsect3">
<a name="RBPlayer-buffering.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>the data associated with the buffering stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>progress</p></td>
<td class="parameter_description"><p>buffering percentage</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-eos"></a><h3>The <code class="literal">“eos”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  stream_data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a>  early,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'eos' signal is emitted when a stream finishes, or in some cases, when it
is about to finish (with <em class="parameter"><code>early</code></em>
 set to <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>) to allow for a new track to be
played immediately afterwards.</p>
<div class="refsect3">
<a name="RBPlayer-eos.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>the data associated with the stream that finished</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>early</p></td>
<td class="parameter_description"><p>if <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>, the EOS notification should only be used for track changes.</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-NO-RECURSE:CAPS">No Recursion</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-error"></a><h3>The <code class="literal">“error”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  stream_data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  error,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'error' signal is emitted when an error is encountered
while opening or playing a stream.</p>
<div class="refsect3">
<a name="RBPlayer-error.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>the data associated with the stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>description of the error</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-NO-RECURSE:CAPS">No Recursion</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-event"></a><h3>The <code class="literal">“event”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  stream_data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'event' signal provides a means for custom GStreamer
elements to communicate events back to the rest of the
application.  The GStreamer element posts an application
message on the GStreamer bus, which is translated into an
event signal with the detail of the signal set to the name
of the structure found in the message.</p>
<div class="refsect3">
<a name="RBPlayer-event.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>data associated with the stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>data</p></td>
<td class="parameter_description"><p>event data</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-DETAILED:CAPS">Has Details</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-image"></a><h3>The <code class="literal">“image”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a>  *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>   stream_data,
               <a href="/usr/share/gtk-doc/html/gdk-pixbuf/gdk-pixbuf-The-GdkPixbuf-Structure.html#GdkPixbuf-struct"><span class="type">GdkPixbuf</span></a> *image,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>   user_data)</pre>
<p>The 'image' signal is emitted to provide access to images extracted
from the stream.</p>
<div class="refsect3">
<a name="RBPlayer-image.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>data associated with the stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>image</p></td>
<td class="parameter_description"><p>the image extracted from the stream</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-info"></a><h3>The <code class="literal">“info”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  stream_data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>      field,
               <a href="/usr/share/gtk-doc/html/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>   *value,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'info' signal is emitted when a metadata value is found in
the stream.</p>
<div class="refsect3">
<a name="RBPlayer-info.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>the data associated with the stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>field</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBMetaData.html#RBMetaDataField" title="enum RBMetaDataField"><span class="type">RBMetaDataField</span></a> corresponding to the stream info</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>the value of the stream info field</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-playing-stream"></a><h3>The <code class="literal">“playing-stream”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  stream_data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'playing-stream' signal is emitted when the main playing stream
changes. It should be used to update the UI to show the new
stream. It can either be emitted before or after <a class="link" href="RBPlayer.html#rb-player-play" title="rb_player_play ()"><span class="type">rb_player_play</span></a> returns,
depending on the player backend.</p>
<div class="refsect3">
<a name="RBPlayer-playing-stream.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>data associated with the stream</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-redirect"></a><h3>The <code class="literal">“redirect”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  stream_data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a>    *uri,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'redirect' signal is emitted to indicate when a stream has change URI.</p>
<div class="refsect3">
<a name="RBPlayer-redirect.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>data associated with the stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>uri</p></td>
<td class="parameter_description"><p>URI to redirect to</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-tick"></a><h3>The <code class="literal">“tick”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  stream_data,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a>    elapsed,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint64"><span class="type">gint64</span></a>    duration,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'tick' signal is emitted repeatedly while the stream is
playing. Signal handlers can use this to update UI and to
prepare new streams for crossfade or gapless playback.</p>
<div class="refsect3">
<a name="RBPlayer-tick.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>stream_data</p></td>
<td class="parameter_description"><p>the data associated with the stream</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>elapsed</p></td>
<td class="parameter_description"><p>playback position in the stream (in nanoseconds)</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>duration</p></td>
<td class="parameter_description"><p>current estimate of the duration of the stream
(in nanoseconds)</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
<hr>
<div class="refsect2">
<a name="RBPlayer-volume-changed"></a><h3>The <code class="literal">“volume-changed”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a> *player,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gfloat"><span class="type">gfloat</span></a>    volume,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>  user_data)</pre>
<p>The 'volume-changed' signal is emitted when the output stream volume is
changed externally.</p>
<div class="refsect3">
<a name="RBPlayer-volume-changed.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>player</p></td>
<td class="parameter_description"><p>the <a class="link" href="RBPlayer.html" title="RBPlayer"><span class="type">RBPlayer</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>volume</p></td>
<td class="parameter_description"><p>the new volume level</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="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
</div>
</div>
</div>
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