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<div class="title">queue.c File Reference</div> </div>
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<div class="textblock"><code>#include <stdio.h></code><br />
<code>#include <stdlib.h></code><br />
<code>#include <string.h></code><br />
<code>#include "<a class="el" href="queue_8h_source.html">queue.h</a>"</code><br />
<code>#include "<a class="el" href="omx__comp__debug__levels_8h_source.html">omx_comp_debug_levels.h</a>"</code><br />
</div>
<p><a href="queue_8c_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a8f5abe559cd352d91efb79bc6e1788de"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="queue_8c.html#a8f5abe559cd352d91efb79bc6e1788de">queue_init</a> (<a class="el" href="structqueue__t.html">queue_t</a> *<a class="el" href="queue_8h.html#a29e8cac7d151c030f0e1ac1c07f18323">queue</a>)</td></tr>
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<tr class="memitem:a7ed0f920c24a1c31472c8fc571100e37"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="queue_8c.html#a7ed0f920c24a1c31472c8fc571100e37">queue_deinit</a> (<a class="el" href="structqueue__t.html">queue_t</a> *<a class="el" href="queue_8h.html#a29e8cac7d151c030f0e1ac1c07f18323">queue</a>)</td></tr>
<tr class="separator:a7ed0f920c24a1c31472c8fc571100e37"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a29e8cac7d151c030f0e1ac1c07f18323"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="queue_8c.html#a29e8cac7d151c030f0e1ac1c07f18323">queue</a> (<a class="el" href="structqueue__t.html">queue_t</a> *queue, void *data)</td></tr>
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<tr class="memitem:ada3e91c280824049e9aaa8bb9439bc91"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="queue_8c.html#ada3e91c280824049e9aaa8bb9439bc91">dequeue</a> (<a class="el" href="structqueue__t.html">queue_t</a> *<a class="el" href="queue_8h.html#a29e8cac7d151c030f0e1ac1c07f18323">queue</a>)</td></tr>
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<tr class="memitem:adebc8aa8d0be687bce26fb8c458c447a"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="queue_8c.html#adebc8aa8d0be687bce26fb8c458c447a">getquenelem</a> (<a class="el" href="structqueue__t.html">queue_t</a> *<a class="el" href="queue_8h.html#a29e8cac7d151c030f0e1ac1c07f18323">queue</a>)</td></tr>
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<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="ada3e91c280824049e9aaa8bb9439bc91"></a>
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<td class="memname">void* dequeue </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structqueue__t.html">queue_t</a> * </td>
<td class="paramname"><em>queue</em></td><td>)</td>
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<p>Dequeue an element from the given queue descriptor</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">queue</td><td>the queue descriptor from which to dequeue the element</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the element that has bee dequeued. If the queue is empty a NULL value is returned </dd></dl>
<p>Definition at line <a class="el" href="queue_8c_source.html#l00122">122</a> of file <a class="el" href="queue_8c_source.html">queue.c</a>.</p>
<p>References <a class="el" href="queue_8h_source.html#l00038">qelem_t::data</a>, <a class="el" href="queue_8h_source.html#l00044">queue_t::first</a>, <a class="el" href="queue_8h_source.html#l00047">queue_t::mutex</a>, <a class="el" href="queue_8h_source.html#l00046">queue_t::nelem</a>, and <a class="el" href="queue_8h_source.html#l00037">qelem_t::q_forw</a>.</p>
<p>Referenced by <a class="el" href="omx__base__port_8c_source.html#l00273">base_port_DisablePort()</a>, <a class="el" href="omx__base__port_8c_source.html#l00176">base_port_FlushProcessingBuffers()</a>, <a class="el" href="omx__clocksrc__component_8c_source.html#l00807">clocksrc_port_FlushProcessingBuffers()</a>, <a class="el" href="omx__base__component_8c_source.html#l01438">compMessageHandlerFunction()</a>, <a class="el" href="omx__audiomixer__component_8c_source.html#l00399">omx_audio_mixer_BufferMgmtFunction()</a>, <a class="el" href="omx__base__component_8c_source.html#l00370">omx_base_component_DoStateSet()</a>, <a class="el" href="omx__base__filter_8c_source.html#l00083">omx_base_filter_BufferMgmtFunction()</a>, <a class="el" href="omx__base__sink_8c_source.html#l00067">omx_base_sink_BufferMgmtFunction()</a>, <a class="el" href="omx__base__sink_8c_source.html#l00206">omx_base_sink_twoport_BufferMgmtFunction()</a>, <a class="el" href="omx__base__source_8c_source.html#l00068">omx_base_source_BufferMgmtFunction()</a>, <a class="el" href="omx__base__source_8c_source.html#l00211">omx_base_source_twoport_BufferMgmtFunction()</a>, <a class="el" href="omx__clocksrc__component_8c_source.html#l00628">omx_clocksrc_BufferMgmtFunction()</a>, <a class="el" href="omx__video__scheduler__component_8c_source.html#l00272">omx_video_scheduler_component_ClockPortHandleFunction()</a>, and <a class="el" href="omx__video__scheduler__component_8c_source.html#l00417">omx_video_scheduler_component_port_FlushProcessingBuffers()</a>.</p>
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<td class="memname">int getquenelem </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structqueue__t.html">queue_t</a> * </td>
<td class="paramname"><em>queue</em></td><td>)</td>
<td></td>
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<p>Returns the number of elements hold in the queue</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">queue</td><td>the requested queue</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the number of elements in the queue </dd></dl>
<p>Definition at line <a class="el" href="queue_8c_source.html#l00143">143</a> of file <a class="el" href="queue_8c_source.html">queue.c</a>.</p>
<p>References <a class="el" href="queue_8h_source.html#l00047">queue_t::mutex</a>, and <a class="el" href="queue_8h_source.html#l00046">queue_t::nelem</a>.</p>
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<td class="memname">int queue </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structqueue__t.html">queue_t</a> * </td>
<td class="paramname"><em>queue</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">void * </td>
<td class="paramname"><em>data</em> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td>
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<p>Enqueue an element to the given queue descriptor</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">queue</td><td>the queue descriptor where to queue data</td></tr>
<tr><td class="paramname">data</td><td>the data to be enqueued</td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>-1 if the queue is full </dd></dl>
<p>Definition at line <a class="el" href="queue_8c_source.html#l00103">103</a> of file <a class="el" href="queue_8c_source.html">queue.c</a>.</p>
<p>References <a class="el" href="queue_8h_source.html#l00038">qelem_t::data</a>, <a class="el" href="queue_8h_source.html#l00045">queue_t::last</a>, <a class="el" href="queue_8h_source.html#l00047">queue_t::mutex</a>, <a class="el" href="queue_8h_source.html#l00046">queue_t::nelem</a>, and <a class="el" href="queue_8h_source.html#l00037">qelem_t::q_forw</a>.</p>
<p>Referenced by <a class="el" href="omx__base__clock__port_8c_source.html#l00133">base_clock_port_SendBufferFunction()</a>, <a class="el" href="omx__base__port_8c_source.html#l00613">base_port_AllocateTunnelBuffer()</a>, <a class="el" href="omx__base__port_8c_source.html#l00176">base_port_FlushProcessingBuffers()</a>, <a class="el" href="omx__base__port_8c_source.html#l00918">base_port_ReturnBufferFunction()</a>, <a class="el" href="omx__base__port_8c_source.html#l00818">base_port_SendBufferFunction()</a>, <a class="el" href="omx__clocksrc__component_8c_source.html#l00807">clocksrc_port_FlushProcessingBuffers()</a>, <a class="el" href="omx__base__component_8c_source.html#l01289">omx_base_component_SendCommand()</a>, <a class="el" href="omx__video__scheduler__component_8c_source.html#l00417">omx_video_scheduler_component_port_FlushProcessingBuffers()</a>, and <a class="el" href="omx__video__scheduler__component_8c_source.html#l00168">omx_video_scheduler_component_port_SendBufferFunction()</a>.</p>
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<td class="memname">void queue_deinit </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structqueue__t.html">queue_t</a> * </td>
<td class="paramname"><em>queue</em></td><td>)</td>
<td></td>
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<p>Deinitialize a queue descriptor flushing all of its internal data</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">queue</td><td>the queue descriptor to dump </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="queue_8c_source.html#l00077">77</a> of file <a class="el" href="queue_8c_source.html">queue.c</a>.</p>
<p>References <a class="el" href="queue_8h_source.html#l00044">queue_t::first</a>, <a class="el" href="queue_8h_source.html#l00032">MAX_QUEUE_ELEMENTS</a>, <a class="el" href="queue_8h_source.html#l00047">queue_t::mutex</a>, and <a class="el" href="queue_8h_source.html#l00037">qelem_t::q_forw</a>.</p>
<p>Referenced by <a class="el" href="omx__base__component_8c_source.html#l00044">base_constructor_remove_garbage_collected()</a>, <a class="el" href="omx__base__port_8c_source.html#l00134">base_port_Destructor()</a>, and <a class="el" href="omx__base__component_8c_source.html#l00271">omx_base_component_Destructor()</a>.</p>
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<td class="memname">int queue_init </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structqueue__t.html">queue_t</a> * </td>
<td class="paramname"><em>queue</em></td><td>)</td>
<td></td>
</tr>
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<p><a class="el" href="queue_8c.html">src/queue.c</a></p>
<p>Implements a simple FIFO structure used for queueing OMX buffers.</p>
<p>Copyright (C) 2007-2009 STMicroelectronics Copyright (C) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).</p>
<p>This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.</p>
<p>This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.</p>
<p>You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Initialize a queue descriptor</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">queue</td><td>The queue descriptor to initialize. The user needs to allocate the queue </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="queue_8c_source.html#l00038">38</a> of file <a class="el" href="queue_8c_source.html">queue.c</a>.</p>
<p>References <a class="el" href="queue_8h_source.html#l00044">queue_t::first</a>, <a class="el" href="queue_8h_source.html#l00045">queue_t::last</a>, <a class="el" href="queue_8h_source.html#l00032">MAX_QUEUE_ELEMENTS</a>, <a class="el" href="queue_8h_source.html#l00047">queue_t::mutex</a>, <a class="el" href="queue_8h_source.html#l00046">queue_t::nelem</a>, and <a class="el" href="queue_8h_source.html#l00037">qelem_t::q_forw</a>.</p>
<p>Referenced by <a class="el" href="omx__base__port_8c_source.html#l00055">base_port_Constructor()</a>, and <a class="el" href="omx__base__component_8c_source.html#l00095">omx_base_component_Constructor()</a>.</p>
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