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<h1>gr_file_descriptor_source.h</h1><a href="gr__file__descriptor__source_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c++ -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright 2004 Free Software Foundation, Inc.</span>
<a name="l00004"></a>00004 <span class="comment"> * </span>
<a name="l00005"></a>00005 <span class="comment"> * This file is part of GNU Radio</span>
<a name="l00006"></a>00006 <span class="comment"> * </span>
<a name="l00007"></a>00007 <span class="comment"> * GNU Radio is free software; you can redistribute it and/or modify</span>
<a name="l00008"></a>00008 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00009"></a>00009 <span class="comment"> * the Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00010"></a>00010 <span class="comment"> * any later version.</span>
<a name="l00011"></a>00011 <span class="comment"> * </span>
<a name="l00012"></a>00012 <span class="comment"> * GNU Radio is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00015"></a>00015 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> * </span>
<a name="l00017"></a>00017 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00018"></a>00018 <span class="comment"> * along with GNU Radio; see the file COPYING. If not, write to</span>
<a name="l00019"></a>00019 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street,</span>
<a name="l00020"></a>00020 <span class="comment"> * Boston, MA 02110-1301, USA.</span>
<a name="l00021"></a>00021 <span class="comment"> */</span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#ifndef INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_H</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_H</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <<a class="code" href="gr__sync__block_8h.html">gr_sync_block.h</a>></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="keyword">class </span><a class="code" href="classgr__file__descriptor__source.html" title="Read stream from file descriptor.">gr_file_descriptor_source</a>;
<a name="l00029"></a>00029 <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr<gr_file_descriptor_source></a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_file_descriptor_source_sptr</a>;
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_file_descriptor_source_sptr</a>
<a name="l00032"></a>00032 <a class="code" href="gr__file__descriptor__source_8h.html#adf79f2ebd841dc8d9e490d8065c2226a">gr_make_file_descriptor_source</a> (<span class="keywordtype">size_t</span> itemsize, <span class="keywordtype">int</span> fd, <span class="keywordtype">bool</span> repeat = <span class="keyword">false</span>);
<a name="l00033"></a>00033 <span class="comment"></span>
<a name="l00034"></a>00034 <span class="comment">/*!</span>
<a name="l00035"></a>00035 <span class="comment"> * \brief Read stream from file descriptor.</span>
<a name="l00036"></a>00036 <span class="comment"> * \ingroup source_blk</span>
<a name="l00037"></a>00037 <span class="comment"> */</span>
<a name="l00038"></a>00038
<a name="l00039"></a><a class="code" href="classgr__file__descriptor__source.html">00039</a> <span class="keyword">class </span><a class="code" href="classgr__file__descriptor__source.html" title="Read stream from file descriptor.">gr_file_descriptor_source</a> : <span class="keyword">public</span> <a class="code" href="classgr__sync__block.html" title="synchronous 1:1 input to output with historyOverride work to provide the signal processing...">gr_sync_block</a>
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041 <span class="keyword">friend</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_file_descriptor_source_sptr</a>
<a name="l00042"></a>00042 <a class="code" href="classgr__file__descriptor__source.html#a5eb5d8d1aa70425cfd14c69f91da71a9">gr_make_file_descriptor_source</a> (<span class="keywordtype">size_t</span> itemsize, <span class="keywordtype">int</span> fd, <span class="keywordtype">bool</span> repeat);
<a name="l00043"></a>00043 <span class="keyword">private</span>:
<a name="l00044"></a>00044 <span class="keywordtype">size_t</span> d_itemsize;
<a name="l00045"></a>00045 <span class="keywordtype">int</span> d_fd;
<a name="l00046"></a>00046 <span class="keywordtype">bool</span> d_repeat;
<a name="l00047"></a>00047
<a name="l00048"></a>00048 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_residue;
<a name="l00049"></a>00049 <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> d_residue_len;
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <span class="keyword">protected</span>:
<a name="l00052"></a>00052 <a class="code" href="classgr__file__descriptor__source.html#a18569b6c876227223e861d66c726218d">gr_file_descriptor_source</a> (<span class="keywordtype">size_t</span> itemsize, <span class="keywordtype">int</span> fd, <span class="keywordtype">bool</span> repeat);
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keywordtype">int</span> <a class="code" href="classgr__file__descriptor__source.html#a19ace13388bd5037196b9ee4dce0543a">read_items</a> (<span class="keywordtype">char</span> *buf, <span class="keywordtype">int</span> nitems);
<a name="l00055"></a>00055 <span class="keywordtype">int</span> <a class="code" href="classgr__file__descriptor__source.html#af0f9a847bf3cb06905b587e47368340e">handle_residue</a> (<span class="keywordtype">char</span> *buf, <span class="keywordtype">int</span> nbytes_read);
<a name="l00056"></a><a class="code" href="classgr__file__descriptor__source.html#a11599f25e05597bdda4f7e003435fecb">00056</a> <span class="keywordtype">void</span> <a class="code" href="classgr__file__descriptor__source.html#a11599f25e05597bdda4f7e003435fecb">flush_residue</a> () { d_residue_len = 0; }
<a name="l00057"></a>00057
<a name="l00058"></a>00058
<a name="l00059"></a>00059 <span class="keyword">public</span>:
<a name="l00060"></a>00060 <a class="code" href="classgr__file__descriptor__source.html#a8553a2b7f53a6ffe8754860177c6a714">~gr_file_descriptor_source</a> ();
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="keywordtype">int</span> <a class="code" href="classgr__file__descriptor__source.html#a28a7c20d750296c73c14c1391605ab19" title="just like gr_block::general_work, only this arranges to call consume_each for you...">work</a> (<span class="keywordtype">int</span> noutput_items,
<a name="l00063"></a>00063 <a class="code" href="classstd_1_1vector.html">gr_vector_const_void_star</a> &input_items,
<a name="l00064"></a>00064 <a class="code" href="classstd_1_1vector.html">gr_vector_void_star</a> &output_items);
<a name="l00065"></a>00065 };
<a name="l00066"></a>00066
<a name="l00067"></a>00067 <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_GR_FILE_DESCRIPTOR_SOURCE_H */</span>
</pre></div></div>
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