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<h1>audio_osx_sink.h</h1>  </div>
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<a href="audio__osx__sink_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 2006 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_AUDIO_OSX_SINK_H</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_AUDIO_OSX_SINK_H</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include &lt;gr_sync_block.h&gt;</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include &lt;string&gt;</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include &lt;list&gt;</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include &lt;AudioUnit/AudioUnit.h&gt;</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include &lt;<a class="code" href="circular__buffer_8h.html">circular_buffer.h</a>&gt;</span>
<a name="l00031"></a>00031 
<a name="l00032"></a>00032 <span class="keyword">class </span><a class="code" href="classaudio__osx__sink.html" title="audio sink using OSX">audio_osx_sink</a>;
<a name="l00033"></a>00033 <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr&lt;audio_osx_sink&gt;</a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">audio_osx_sink_sptr</a>;
<a name="l00034"></a>00034 
<a name="l00035"></a>00035 <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">audio_osx_sink_sptr</a>
<a name="l00036"></a>00036 <a class="code" href="audio__osx__sink_8h.html#aa98c04d66fdfd0dd480d81d3b1b4e322">audio_osx_make_sink</a> (<span class="keywordtype">int</span> sample_rate = 44100,
<a name="l00037"></a>00037                      <span class="keyword">const</span> std::string device_name = <span class="stringliteral">&quot;2&quot;</span>,
<a name="l00038"></a>00038                      <span class="keywordtype">bool</span> do_block = <span class="keyword">true</span>,
<a name="l00039"></a>00039                      <span class="keywordtype">int</span> channel_config = -1,
<a name="l00040"></a>00040                      <span class="keywordtype">int</span> max_sample_count = -1);
<a name="l00041"></a>00041 <span class="comment"></span>
<a name="l00042"></a>00042 <span class="comment">/*!</span>
<a name="l00043"></a>00043 <span class="comment"> * \brief audio sink using OSX</span>
<a name="l00044"></a>00044 <span class="comment"> *</span>
<a name="l00045"></a>00045 <span class="comment"> * input signature is one or two streams of floats.</span>
<a name="l00046"></a>00046 <span class="comment"> * Input samples must be in the range [-1,1].</span>
<a name="l00047"></a>00047 <span class="comment"> */</span>
<a name="l00048"></a>00048 
<a name="l00049"></a><a class="code" href="classaudio__osx__sink.html">00049</a> <span class="keyword">class </span><a class="code" href="classaudio__osx__sink.html" title="audio sink using OSX">audio_osx_sink</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 implementa...">gr_sync_block</a> {
<a name="l00050"></a>00050   <span class="keyword">friend</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">audio_osx_sink_sptr</a>
<a name="l00051"></a>00051   <a class="code" href="classaudio__osx__sink.html#aef50e214a04a63ddfb094944486caee9">audio_osx_make_sink</a> (<span class="keywordtype">int</span> sample_rate,
<a name="l00052"></a>00052                        <span class="keyword">const</span> std::string device_name,
<a name="l00053"></a>00053                        <span class="keywordtype">bool</span> do_block,
<a name="l00054"></a>00054                        <span class="keywordtype">int</span> channel_config,
<a name="l00055"></a>00055                        <span class="keywordtype">int</span> max_sample_count);
<a name="l00056"></a>00056 
<a name="l00057"></a>00057   Float64             d_sample_rate;
<a name="l00058"></a>00058   <span class="keywordtype">int</span>                 d_channel_config;
<a name="l00059"></a>00059   UInt32              d_n_channels;
<a name="l00060"></a>00060   UInt32              d_queueSampleCount, d_max_sample_count;
<a name="l00061"></a>00061   <span class="keywordtype">bool</span>                d_do_block;
<a name="l00062"></a>00062   <a class="code" href="classmld__mutex__t.html">mld_mutex_ptr</a>       d_internal;
<a name="l00063"></a>00063   <a class="code" href="classmld__condition__t.html">mld_condition_ptr</a>   d_cond_data;
<a name="l00064"></a>00064   <a class="code" href="classcircular__buffer.html">circular_buffer&lt;float&gt;</a>** d_buffers;
<a name="l00065"></a>00065 
<a name="l00066"></a>00066 <span class="comment">// AudioUnits and Such</span>
<a name="l00067"></a>00067   AudioUnit           d_OutputAU;
<a name="l00068"></a>00068 
<a name="l00069"></a>00069 <span class="keyword">protected</span>:
<a name="l00070"></a>00070   <a class="code" href="classaudio__osx__sink.html#abb21a07565b78ce7a861d3c8ee4c4db0">audio_osx_sink</a> (<span class="keywordtype">int</span> sample_rate = 44100,
<a name="l00071"></a>00071                   <span class="keyword">const</span> std::string device_name = <span class="stringliteral">&quot;2&quot;</span>,
<a name="l00072"></a>00072                   <span class="keywordtype">bool</span> do_block = <span class="keyword">true</span>,
<a name="l00073"></a>00073                   <span class="keywordtype">int</span> channel_config = -1,
<a name="l00074"></a>00074                   <span class="keywordtype">int</span> max_sample_count = -1);
<a name="l00075"></a>00075 
<a name="l00076"></a>00076 <span class="keyword">public</span>:
<a name="l00077"></a>00077   <a class="code" href="classaudio__osx__sink.html#aa62867a778efec48976d1537bcb48a9d">~audio_osx_sink</a> ();
<a name="l00078"></a>00078 
<a name="l00079"></a>00079   <span class="keywordtype">bool</span> <a class="code" href="classaudio__osx__sink.html#a53164060127827d69af2c1298fddb156">IsRunning</a> ();
<a name="l00080"></a>00080   <span class="keywordtype">bool</span> <a class="code" href="classaudio__osx__sink.html#af4004bd08b0577701983ba0e2029bd48" title="Called to enable drivers, etc for i/o devices.">start</a> ();
<a name="l00081"></a>00081   <span class="keywordtype">bool</span> <a class="code" href="classaudio__osx__sink.html#af57ebe4d74be578d0357e9a7171eb785" title="Called to disable drivers, etc for i/o devices.">stop</a> ();
<a name="l00082"></a>00082 
<a name="l00083"></a>00083   <span class="keywordtype">int</span> <a class="code" href="classaudio__osx__sink.html#a38c0585e65251d0f5b399751ebf36d17" 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="l00084"></a>00084             <a class="code" href="classstd_1_1vector.html">gr_vector_const_void_star</a> &amp;input_items,
<a name="l00085"></a>00085             <a class="code" href="classstd_1_1vector.html">gr_vector_void_star</a> &amp;output_items);
<a name="l00086"></a>00086 
<a name="l00087"></a>00087 <span class="keyword">private</span>:
<a name="l00088"></a>00088   <span class="keyword">static</span> OSStatus AUOutputCallback (<span class="keywordtype">void</span> *inRefCon, 
<a name="l00089"></a>00089                                     AudioUnitRenderActionFlags *ioActionFlags, 
<a name="l00090"></a>00090                                     <span class="keyword">const</span> AudioTimeStamp *inTimeStamp, 
<a name="l00091"></a>00091                                     UInt32 inBusNumber, 
<a name="l00092"></a>00092                                     UInt32 inNumberFrames, 
<a name="l00093"></a>00093                                     AudioBufferList *ioData);
<a name="l00094"></a>00094 };
<a name="l00095"></a>00095 
<a name="l00096"></a>00096 <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_AUDIO_OSX_SINK_H */</span>
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