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27</tr></table>
28<div class="refentry">
29<a name="gst-plugins-base-plugins-multifdsink"></a><div class="titlepage"></div>
30<div class="refnamediv"><table width="100%"><tr>
31<td valign="top">
32<h2><span class="refentrytitle"><a name="gst-plugins-base-plugins-multifdsink.top_of_page"></a>multifdsink</span></h2>
33<p>multifdsink</p>
34</td>
35<td class="gallery_image" valign="top" align="right"></td>
36</tr></table></div>
37<div class="refsect1">
38<a name="gst-plugins-base-plugins-multifdsink.properties"></a><h2>Properties</h2>
39<div class="informaltable"><table class="informaltable" border="0">
40<colgroup>
41<col width="150px" class="properties_type">
42<col width="300px" class="properties_name">
43<col width="200px" class="properties_flags">
44</colgroup>
45<tbody><tr>
46<td class="property_type"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></td>
47<td class="property_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink--handle-read" title="The “handle-read” property">handle-read</a></td>
48<td class="property_flags">Read / Write</td>
49</tr></tbody>
50</table></div>
51</div>
52<div class="refsect1">
53<a name="gst-plugins-base-plugins-multifdsink.signals"></a><h2>Signals</h2>
54<div class="informaltable"><table class="informaltable" border="0">
55<colgroup>
56<col width="150px" class="signals_return">
57<col width="300px" class="signals_name">
58<col width="200px" class="signals_flags">
59</colgroup>
60<tbody>
61<tr>
62<td class="signal_type"><span class="returnvalue">void</span></td>
63<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-add" title="The “add” signal">add</a></td>
64<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></td>
65</tr>
66<tr>
67<td class="signal_type"><span class="returnvalue">void</span></td>
68<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-add-full" title="The “add-full” signal">add-full</a></td>
69<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></td>
70</tr>
71<tr>
72<td class="signal_type"><span class="returnvalue">void</span></td>
73<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-added" title="The “client-added” signal">client-added</a></td>
74<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
75</tr>
76<tr>
77<td class="signal_type"><span class="returnvalue">void</span></td>
78<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-fd-removed" title="The “client-fd-removed” signal">client-fd-removed</a></td>
79<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
80</tr>
81<tr>
82<td class="signal_type"><span class="returnvalue">void</span></td>
83<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-removed" title="The “client-removed” signal">client-removed</a></td>
84<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></td>
85</tr>
86<tr>
87<td class="signal_type">
88<a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html#GstStructure-struct"><span class="returnvalue">GstStructure</span></a>*</td>
89<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-get-stats" title="The “get-stats” signal">get-stats</a></td>
90<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></td>
91</tr>
92<tr>
93<td class="signal_type"><span class="returnvalue">void</span></td>
94<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-remove" title="The “remove” signal">remove</a></td>
95<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></td>
96</tr>
97<tr>
98<td class="signal_type"><span class="returnvalue">void</span></td>
99<td class="signal_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-remove-flush" title="The “remove-flush” signal">remove-flush</a></td>
100<td class="signal_flags"><a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></td>
101</tr>
102</tbody>
103</table></div>
104</div>
105<a name="GstMultiFdSink"></a><div class="refsect1">
106<a name="gst-plugins-base-plugins-multifdsink.other"></a><h2>Types and Values</h2>
107<div class="informaltable"><table class="informaltable" width="100%" border="0">
108<colgroup>
109<col width="150px" class="name">
110<col class="description">
111</colgroup>
112<tbody><tr>
113<td class="datatype_keyword">struct</td>
114<td class="function_name"><a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-struct" title="struct GstMultiFdSink">GstMultiFdSink</a></td>
115</tr></tbody>
116</table></div>
117</div>
118<div class="refsect1">
119<a name="gst-plugins-base-plugins-multifdsink.object-hierarchy"></a><h2>Object Hierarchy</h2>
120<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject-struct">GObject</a>
121    <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a>
122        <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstObject.html#GstObject-struct">GstObject</a>
123            <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstElement.html#GstElement-struct">GstElement</a>
124                <span class="lineart">╰──</span> <a href="/usr/share/gtk-doc/html/gstreamer-libs-1.0/GstBaseSink.html#GstBaseSink-struct">GstBaseSink</a>
125                    <span class="lineart">╰──</span> GstMultiHandleSink
126                        <span class="lineart">╰──</span> GstMultiFdSink
127</pre>
128</div>
129<div class="refsect1">
130<a name="gst-plugins-base-plugins-multifdsink.description"></a><h2>Description</h2>
131<p>This plugin writes incoming data to a set of file descriptors. The
132file descriptors can be added to multifdsink by emitting the <a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-add" title="The “add” signal"><span class="type">“add”</span></a> signal.
133For each descriptor added, the <a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-added" title="The “client-added” signal"><span class="type">“client-added”</span></a> signal will be called.</p>
134<p>The multifdsink element needs to be set into READY, PAUSED or PLAYING state
135before operations such as adding clients are possible.</p>
136<p>A client can also be added with the <a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-add-full" title="The “add-full” signal"><span class="type">“add-full”</span></a> signal
137that allows for more control over what and how much data a client
138initially receives.</p>
139<p>Clients can be removed from multifdsink by emitting the <a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-remove" title="The “remove” signal"><span class="type">“remove”</span></a> signal. For
140each descriptor removed, the <a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-removed" title="The “client-removed” signal"><span class="type">“client-removed”</span></a> signal will be called. The
141<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-removed" title="The “client-removed” signal"><span class="type">“client-removed”</span></a> signal can also be fired when multifdsink decides that a
142client is not active anymore or, depending on the value of the
143<span class="type">“recover-policy”</span> property, if the client is reading too slowly.
144In all cases, multifdsink will never close a file descriptor itself.
145The user of multifdsink is responsible for closing all file descriptors.
146This can for example be done in response to the <a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-fd-removed" title="The “client-fd-removed” signal"><span class="type">“client-fd-removed”</span></a> signal.
147Note that multifdsink still has a reference to the file descriptor when the
148<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-removed" title="The “client-removed” signal"><span class="type">“client-removed”</span></a> signal is emitted, so that "get-stats" can be performed on
149the descriptor; it is therefore not safe to close the file descriptor in
150the <a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-removed" title="The “client-removed” signal"><span class="type">“client-removed”</span></a> signal handler, and you should use the
151<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-client-fd-removed" title="The “client-fd-removed” signal"><span class="type">“client-fd-removed”</span></a> signal to safely close the fd.</p>
152<p>Multifdsink internally keeps a queue of the incoming buffers and uses a
153separate thread to send the buffers to the clients. This ensures that no
154client write can block the pipeline and that clients can read with different
155speeds.</p>
156<p>When adding a client to multifdsink, the <span class="type">“sync-method”</span> property will define
157which buffer in the queued buffers will be sent first to the client. Clients
158can be sent the most recent buffer (which might not be decodable by the
159client if it is not a keyframe), the next keyframe received in
160multifdsink (which can take some time depending on the keyframe rate), or the
161last received keyframe (which will cause a simple burst-on-connect).
162Multifdsink will always keep at least one keyframe in its internal buffers
163when the sync-mode is set to latest-keyframe.</p>
164<p>There are additional values for the <span class="type">“sync-method”</span>
165property to allow finer control over burst-on-connect behaviour. By selecting
166the 'burst' method a minimum burst size can be chosen, 'burst-keyframe'
167additionally requires that the burst begin with a keyframe, and
168'burst-with-keyframe' attempts to burst beginning with a keyframe, but will
169prefer a minimum burst size even if it requires not starting with a keyframe.</p>
170<p>Multifdsink can be instructed to keep at least a minimum amount of data
171expressed in time or byte units in its internal queues with the
172<span class="type">“time-min”</span> and <span class="type">“bytes-min”</span> properties respectively.
173These properties are useful if the application adds clients with the
174<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink-add-full" title="The “add-full” signal"><span class="type">“add-full”</span></a> signal to make sure that a burst connect can
175actually be honored.</p>
176<p>When streaming data, clients are allowed to read at a different rate than
177the rate at which multifdsink receives data. If the client is reading too
178fast, no data will be send to the client until multifdsink receives more
179data. If the client, however, reads too slowly, data for that client will be
180queued up in multifdsink. Two properties control the amount of data
181(buffers) that is queued in multifdsink: <span class="type">“buffers-max”</span> and
182<span class="type">“buffers-soft-max”</span>. A client that falls behind by
183<span class="type">“buffers-max”</span> is removed from multifdsink forcibly.</p>
184<p>A client with a lag of at least <span class="type">“buffers-soft-max”</span> enters the recovery
185procedure which is controlled with the <span class="type">“recover-policy”</span> property.
186A recover policy of NONE will do nothing, RESYNC_LATEST will send the most recently
187received buffer as the next buffer for the client, RESYNC_SOFT_LIMIT
188positions the client to the soft limit in the buffer queue and
189RESYNC_KEYFRAME positions the client at the most recent keyframe in the
190buffer queue.</p>
191<p>multifdsink will by default synchronize on the clock before serving the
192buffers to the clients. This behaviour can be disabled by setting the sync
193property to FALSE. Multifdsink will by default not do QoS and will never
194drop late buffers.</p>
195<div class="refsynopsisdiv">
196<h2>Synopsis</h2>
197<div class="refsect2">
198<a name="id-1.2.70.8.13.1"></a><h3>Element Information</h3>
199<div class="variablelist"><table border="0" class="variablelist">
200<colgroup>
201<col align="left" valign="top">
202<col>
203</colgroup>
204<tbody>
205<tr>
206<td><p><span class="term">plugin</span></p></td>
207<td>
208            <a class="link" href="gst-plugins-base-plugins-plugin-tcp.html#plugin-tcp">tcp</a>
209          </td>
210</tr>
211<tr>
212<td><p><span class="term">author</span></p></td>
213<td>Thomas Vander Stichele &lt;thomas at apestaart dot org&gt;, Wim Taymans &lt;wim@fluendo.com&gt;</td>
214</tr>
215<tr>
216<td><p><span class="term">class</span></p></td>
217<td>Sink/Network</td>
218</tr>
219</tbody>
220</table></div>
221</div>
222<hr>
223<div class="refsect2">
224<a name="id-1.2.70.8.13.2"></a><h3>Element Pads</h3>
225<div class="variablelist"><table border="0" class="variablelist">
226<colgroup>
227<col align="left" valign="top">
228<col>
229</colgroup>
230<tbody>
231<tr>
232<td><p><span class="term">name</span></p></td>
233<td>sink</td>
234</tr>
235<tr>
236<td><p><span class="term">direction</span></p></td>
237<td>sink</td>
238</tr>
239<tr>
240<td><p><span class="term">presence</span></p></td>
241<td>always</td>
242</tr>
243<tr>
244<td><p><span class="term">details</span></p></td>
245<td>ANY</td>
246</tr>
247</tbody>
248</table></div>
249</div>
250</div>
251</div>
252<div class="refsect1">
253<a name="gst-plugins-base-plugins-multifdsink.functions_details"></a><h2>Functions</h2>
254<p></p>
255</div>
256<div class="refsect1">
257<a name="gst-plugins-base-plugins-multifdsink.other_details"></a><h2>Types and Values</h2>
258<div class="refsect2">
259<a name="GstMultiFdSink-struct"></a><h3>struct GstMultiFdSink</h3>
260<pre class="programlisting">struct GstMultiFdSink;</pre>
261<p>The multifdsink object structure.</p>
262</div>
263</div>
264<div class="refsect1">
265<a name="gst-plugins-base-plugins-multifdsink.property-details"></a><h2>Property Details</h2>
266<div class="refsect2">
267<a name="GstMultiFdSink--handle-read"></a><h3>The <code class="literal">“handle-read”</code> property</h3>
268<pre class="programlisting">  “handle-read”              <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a></pre>
269<p>Handle client reads and discard the data.</p>
270<p>Flags: Read / Write</p>
271<p>Default value: TRUE</p>
272</div>
273</div>
274<div class="refsect1">
275<a name="gst-plugins-base-plugins-multifdsink.signal-details"></a><h2>Signal Details</h2>
276<div class="refsect2">
277<a name="GstMultiFdSink-add"></a><h3>The <code class="literal">“add”</code> signal</h3>
278<pre class="programlisting"><span class="returnvalue">void</span>
279user_function (<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink"><span class="type">GstMultiFdSink</span></a> *gstmultifdsink,
280               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>            fd,
281               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>        user_data)</pre>
282<p>Hand the given open file descriptor to multifdsink to write to.</p>
283<div class="refsect3">
284<a name="GstMultiFdSink-add.parameters"></a><h4>Parameters</h4>
285<div class="informaltable"><table class="informaltable" width="100%" border="0">
286<colgroup>
287<col width="150px" class="parameters_name">
288<col class="parameters_description">
289<col width="200px" class="parameters_annotations">
290</colgroup>
291<tbody>
292<tr>
293<td class="parameter_name"><p>gstmultifdsink</p></td>
294<td class="parameter_description"><p>the multifdsink element to emit this signal on</p></td>
295<td class="parameter_annotations"> </td>
296</tr>
297<tr>
298<td class="parameter_name"><p>fd</p></td>
299<td class="parameter_description"><p>the file descriptor to add to multifdsink</p></td>
300<td class="parameter_annotations"> </td>
301</tr>
302<tr>
303<td class="parameter_name"><p>user_data</p></td>
304<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
305<td class="parameter_annotations"> </td>
306</tr>
307</tbody>
308</table></div>
309</div>
310<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></p>
311</div>
312<hr>
313<div class="refsect2">
314<a name="GstMultiFdSink-add-full"></a><h3>The <code class="literal">“add-full”</code> signal</h3>
315<pre class="programlisting"><span class="returnvalue">void</span>
316user_function (<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink"><span class="type">GstMultiFdSink</span></a>              *gstmultifdsink,
317               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                         fd,
318               <span class="type">GstMultiHandleSinkSyncMethod</span> sync,
319               <a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstFormat.html#GstFormat"><span class="type">GstFormat</span></a>                    format_min,
320               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a>                      value_min,
321               <a href="/usr/share/gtk-doc/html/gstreamer-1.0/gstreamer-GstFormat.html#GstFormat"><span class="type">GstFormat</span></a>                    format_max,
322               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint64"><span class="type">guint64</span></a>                      value_max,
323               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>                     user_data)</pre>
324<p>Hand the given open file descriptor to multifdsink to write to and
325specify the burst parameters for the new connection.</p>
326<div class="refsect3">
327<a name="GstMultiFdSink-add-full.parameters"></a><h4>Parameters</h4>
328<div class="informaltable"><table class="informaltable" width="100%" border="0">
329<colgroup>
330<col width="150px" class="parameters_name">
331<col class="parameters_description">
332<col width="200px" class="parameters_annotations">
333</colgroup>
334<tbody>
335<tr>
336<td class="parameter_name"><p>gstmultifdsink</p></td>
337<td class="parameter_description"><p>the multifdsink element to emit this signal on</p></td>
338<td class="parameter_annotations"> </td>
339</tr>
340<tr>
341<td class="parameter_name"><p>fd</p></td>
342<td class="parameter_description"><p>the file descriptor to add to multifdsink</p></td>
343<td class="parameter_annotations"> </td>
344</tr>
345<tr>
346<td class="parameter_name"><p>sync</p></td>
347<td class="parameter_description"><p>the sync method to use</p></td>
348<td class="parameter_annotations"> </td>
349</tr>
350<tr>
351<td class="parameter_name"><p>format_min</p></td>
352<td class="parameter_description"><p>the format of <em class="parameter"><code>value_min</code></em>
353</p></td>
354<td class="parameter_annotations"> </td>
355</tr>
356<tr>
357<td class="parameter_name"><p>value_min</p></td>
358<td class="parameter_description"><p>the minimum amount of data to burst expressed in
359<em class="parameter"><code>format_min</code></em>
360units.</p></td>
361<td class="parameter_annotations"> </td>
362</tr>
363<tr>
364<td class="parameter_name"><p>format_max</p></td>
365<td class="parameter_description"><p>the format of <em class="parameter"><code>value_max</code></em>
366</p></td>
367<td class="parameter_annotations"> </td>
368</tr>
369<tr>
370<td class="parameter_name"><p>value_max</p></td>
371<td class="parameter_description"><p>the maximum amount of data to burst expressed in
372<em class="parameter"><code>format_max</code></em>
373units.</p></td>
374<td class="parameter_annotations"> </td>
375</tr>
376<tr>
377<td class="parameter_name"><p>user_data</p></td>
378<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
379<td class="parameter_annotations"> </td>
380</tr>
381</tbody>
382</table></div>
383</div>
384<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></p>
385</div>
386<hr>
387<div class="refsect2">
388<a name="GstMultiFdSink-client-added"></a><h3>The <code class="literal">“client-added”</code> signal</h3>
389<pre class="programlisting"><span class="returnvalue">void</span>
390user_function (<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink"><span class="type">GstMultiFdSink</span></a> *gstmultifdsink,
391               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>            fd,
392               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>        user_data)</pre>
393<p>The given file descriptor was added to multifdsink. This signal will
394be emitted from the streaming thread so application should be prepared
395for that.</p>
396<div class="refsect3">
397<a name="GstMultiFdSink-client-added.parameters"></a><h4>Parameters</h4>
398<div class="informaltable"><table class="informaltable" width="100%" border="0">
399<colgroup>
400<col width="150px" class="parameters_name">
401<col class="parameters_description">
402<col width="200px" class="parameters_annotations">
403</colgroup>
404<tbody>
405<tr>
406<td class="parameter_name"><p>gstmultifdsink</p></td>
407<td class="parameter_description"><p>the multifdsink element that emitted this signal</p></td>
408<td class="parameter_annotations"> </td>
409</tr>
410<tr>
411<td class="parameter_name"><p>fd</p></td>
412<td class="parameter_description"><p>the file descriptor that was added to multifdsink</p></td>
413<td class="parameter_annotations"> </td>
414</tr>
415<tr>
416<td class="parameter_name"><p>user_data</p></td>
417<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
418<td class="parameter_annotations"> </td>
419</tr>
420</tbody>
421</table></div>
422</div>
423<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
424</div>
425<hr>
426<div class="refsect2">
427<a name="GstMultiFdSink-client-fd-removed"></a><h3>The <code class="literal">“client-fd-removed”</code> signal</h3>
428<pre class="programlisting"><span class="returnvalue">void</span>
429user_function (<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink"><span class="type">GstMultiFdSink</span></a> *gstmultifdsink,
430               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>            fd,
431               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>        user_data)</pre>
432<p>The given file descriptor was removed from multifdsink. This signal will
433be emitted from the streaming thread so applications should be prepared
434for that.</p>
435<p>In this callback, <em class="parameter"><code>gstmultifdsink</code></em>
436 has removed all the information
437associated with <em class="parameter"><code>fd</code></em>
438 and it is therefore not possible to call get-stats
439with <em class="parameter"><code>fd</code></em>
440. It is however safe to <code class="function">close()</code> and reuse <em class="parameter"><code>fd</code></em>
441 in the callback.</p>
442<div class="refsect3">
443<a name="GstMultiFdSink-client-fd-removed.parameters"></a><h4>Parameters</h4>
444<div class="informaltable"><table class="informaltable" width="100%" border="0">
445<colgroup>
446<col width="150px" class="parameters_name">
447<col class="parameters_description">
448<col width="200px" class="parameters_annotations">
449</colgroup>
450<tbody>
451<tr>
452<td class="parameter_name"><p>gstmultifdsink</p></td>
453<td class="parameter_description"><p>the multifdsink element that emitted this signal</p></td>
454<td class="parameter_annotations"> </td>
455</tr>
456<tr>
457<td class="parameter_name"><p>fd</p></td>
458<td class="parameter_description"><p>the file descriptor that was removed from multifdsink</p></td>
459<td class="parameter_annotations"> </td>
460</tr>
461<tr>
462<td class="parameter_name"><p>user_data</p></td>
463<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
464<td class="parameter_annotations"> </td>
465</tr>
466</tbody>
467</table></div>
468</div>
469<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
470</div>
471<hr>
472<div class="refsect2">
473<a name="GstMultiFdSink-client-removed"></a><h3>The <code class="literal">“client-removed”</code> signal</h3>
474<pre class="programlisting"><span class="returnvalue">void</span>
475user_function (<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink"><span class="type">GstMultiFdSink</span></a>                *gstmultifdsink,
476               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>                           fd,
477               <span class="type">GstMultiHandleSinkClientStatus</span> status,
478               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>                       user_data)</pre>
479<p>The given file descriptor is about to be removed from multifdsink. This
480signal will be emitted from the streaming thread so applications should
481be prepared for that.</p>
482<p><em class="parameter"><code>gstmultifdsink</code></em>
483 still holds a handle to <em class="parameter"><code>fd</code></em>
484 so it is possible to call
485the get-stats signal from this callback. For the same reason it is
486not safe to <code class="function">close()</code> and reuse <em class="parameter"><code>fd</code></em>
487 in this callback.</p>
488<div class="refsect3">
489<a name="GstMultiFdSink-client-removed.parameters"></a><h4>Parameters</h4>
490<div class="informaltable"><table class="informaltable" width="100%" border="0">
491<colgroup>
492<col width="150px" class="parameters_name">
493<col class="parameters_description">
494<col width="200px" class="parameters_annotations">
495</colgroup>
496<tbody>
497<tr>
498<td class="parameter_name"><p>gstmultifdsink</p></td>
499<td class="parameter_description"><p>the multifdsink element that emitted this signal</p></td>
500<td class="parameter_annotations"> </td>
501</tr>
502<tr>
503<td class="parameter_name"><p>fd</p></td>
504<td class="parameter_description"><p>the file descriptor that is to be removed from multifdsink</p></td>
505<td class="parameter_annotations"> </td>
506</tr>
507<tr>
508<td class="parameter_name"><p>status</p></td>
509<td class="parameter_description"><p>the reason why the client was removed</p></td>
510<td class="parameter_annotations"> </td>
511</tr>
512<tr>
513<td class="parameter_name"><p>user_data</p></td>
514<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
515<td class="parameter_annotations"> </td>
516</tr>
517</tbody>
518</table></div>
519</div>
520<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-RUN-LAST:CAPS">Run Last</a></p>
521</div>
522<hr>
523<div class="refsect2">
524<a name="GstMultiFdSink-get-stats"></a><h3>The <code class="literal">“get-stats”</code> signal</h3>
525<pre class="programlisting"><a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html#GstStructure-struct"><span class="returnvalue">GstStructure</span></a>*
526user_function (<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink"><span class="type">GstMultiFdSink</span></a> *gstmultifdsink,
527               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>            fd,
528               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>        user_data)</pre>
529<p>Get statistics about <em class="parameter"><code>fd</code></em>
530. This function returns a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html#GstStructure-struct"><span class="type">GstStructure</span></a> to ease
531automatic wrapping for bindings.</p>
532<div class="refsect3">
533<a name="GstMultiFdSink-get-stats.parameters"></a><h4>Parameters</h4>
534<div class="informaltable"><table class="informaltable" width="100%" border="0">
535<colgroup>
536<col width="150px" class="parameters_name">
537<col class="parameters_description">
538<col width="200px" class="parameters_annotations">
539</colgroup>
540<tbody>
541<tr>
542<td class="parameter_name"><p>gstmultifdsink</p></td>
543<td class="parameter_description"><p>the multifdsink element to emit this signal on</p></td>
544<td class="parameter_annotations"> </td>
545</tr>
546<tr>
547<td class="parameter_name"><p>fd</p></td>
548<td class="parameter_description"><p>the file descriptor to get stats of from multifdsink</p></td>
549<td class="parameter_annotations"> </td>
550</tr>
551<tr>
552<td class="parameter_name"><p>user_data</p></td>
553<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
554<td class="parameter_annotations"> </td>
555</tr>
556</tbody>
557</table></div>
558</div>
559<div class="refsect3">
560<a name="GstMultiFdSink-get-stats.returns"></a><h4>Returns</h4>
561<p> a <a href="/usr/share/gtk-doc/html/gstreamer-1.0/GstStructure.html#GstStructure-struct"><span class="type">GstStructure</span></a> with the statistics. The structures
562contains guint64 values that represent respectively: total
563number of bytes sent (bytes-sent), time when the client was
564added (connect-time), time when the client was
565disconnected/removed (disconnect-time), time the client
566is/was active (connect-duration), last activity time (in
567epoch seconds) (last-activity-time), number of buffers
568dropped (buffers-dropped), the timestamp of the first buffer
569(first-buffer-ts) and of the last buffer (last-buffer-ts).
570All times are expressed in nanoseconds (GstClockTime).  The
571structure can be empty if the client was not found.</p>
572</div>
573<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></p>
574</div>
575<hr>
576<div class="refsect2">
577<a name="GstMultiFdSink-remove"></a><h3>The <code class="literal">“remove”</code> signal</h3>
578<pre class="programlisting"><span class="returnvalue">void</span>
579user_function (<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink"><span class="type">GstMultiFdSink</span></a> *gstmultifdsink,
580               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>            fd,
581               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>        user_data)</pre>
582<p>Remove the given open file descriptor from multifdsink.</p>
583<div class="refsect3">
584<a name="GstMultiFdSink-remove.parameters"></a><h4>Parameters</h4>
585<div class="informaltable"><table class="informaltable" width="100%" border="0">
586<colgroup>
587<col width="150px" class="parameters_name">
588<col class="parameters_description">
589<col width="200px" class="parameters_annotations">
590</colgroup>
591<tbody>
592<tr>
593<td class="parameter_name"><p>gstmultifdsink</p></td>
594<td class="parameter_description"><p>the multifdsink element to emit this signal on</p></td>
595<td class="parameter_annotations"> </td>
596</tr>
597<tr>
598<td class="parameter_name"><p>fd</p></td>
599<td class="parameter_description"><p>the file descriptor to remove from multifdsink</p></td>
600<td class="parameter_annotations"> </td>
601</tr>
602<tr>
603<td class="parameter_name"><p>user_data</p></td>
604<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
605<td class="parameter_annotations"> </td>
606</tr>
607</tbody>
608</table></div>
609</div>
610<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></p>
611</div>
612<hr>
613<div class="refsect2">
614<a name="GstMultiFdSink-remove-flush"></a><h3>The <code class="literal">“remove-flush”</code> signal</h3>
615<pre class="programlisting"><span class="returnvalue">void</span>
616user_function (<a class="link" href="gst-plugins-base-plugins-multifdsink.html#GstMultiFdSink"><span class="type">GstMultiFdSink</span></a> *gstmultifdsink,
617               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a>            fd,
618               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>        user_data)</pre>
619<p>Remove the given open file descriptor from multifdsink after flushing all
620the pending data to the fd.</p>
621<div class="refsect3">
622<a name="GstMultiFdSink-remove-flush.parameters"></a><h4>Parameters</h4>
623<div class="informaltable"><table class="informaltable" width="100%" border="0">
624<colgroup>
625<col width="150px" class="parameters_name">
626<col class="parameters_description">
627<col width="200px" class="parameters_annotations">
628</colgroup>
629<tbody>
630<tr>
631<td class="parameter_name"><p>gstmultifdsink</p></td>
632<td class="parameter_description"><p>the multifdsink element to emit this signal on</p></td>
633<td class="parameter_annotations"> </td>
634</tr>
635<tr>
636<td class="parameter_name"><p>fd</p></td>
637<td class="parameter_description"><p>the file descriptor to remove from multifdsink</p></td>
638<td class="parameter_annotations"> </td>
639</tr>
640<tr>
641<td class="parameter_name"><p>user_data</p></td>
642<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
643<td class="parameter_annotations"> </td>
644</tr>
645</tbody>
646</table></div>
647</div>
648<p>Flags: <a href="/usr/share/gtk-doc/html/gobject/gobject-Signals.html#G-SIGNAL-ACTION:CAPS">Action</a></p>
649</div>
650</div>
651<div class="refsect1">
652<a name="gst-plugins-base-plugins-multifdsink.see-also"></a><h2>See Also</h2>
653<p>tcpserversink</p>
654</div>
655</div>
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