<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>GNU Radio 3.2.2 C++ API: audio_osx_source.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.6.2 --> <h1>audio_osx_source.h</h1><a href="audio__osx__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 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_SOURCE_H</span> <a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_AUDIO_OSX_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 <span class="preprocessor">#include <string></span> <a name="l00028"></a>00028 <span class="preprocessor">#include <AudioToolbox/AudioToolbox.h></span> <a name="l00029"></a>00029 <span class="preprocessor">#include <AudioUnit/AudioUnit.h></span> <a name="l00030"></a>00030 <span class="preprocessor">#include <<a class="code" href="circular__buffer_8h.html">circular_buffer.h</a>></span> <a name="l00031"></a>00031 <a name="l00032"></a>00032 <span class="keyword">class </span><a class="code" href="classaudio__osx__source.html" title="audio source using OSX">audio_osx_source</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<audio_osx_source></a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">audio_osx_source_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_source_sptr</a> <a name="l00036"></a>00036 <a class="code" href="audio__osx__source_8h.html#a4ec0677ff2981fad69bf9bd0239b91c4">audio_osx_make_source</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">""</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 source 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"> * 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__source.html">00049</a> <span class="keyword">class </span><a class="code" href="classaudio__osx__source.html" title="audio source using OSX">audio_osx_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="l00050"></a>00050 <span class="keyword">friend</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">audio_osx_source_sptr</a> <a name="l00051"></a>00051 <a class="code" href="classaudio__osx__source.html#af847f0d3722185e72f139bb376410106">audio_osx_make_source</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_deviceSampleRate, d_outputSampleRate; <a name="l00058"></a>00058 <span class="keywordtype">int</span> d_channel_config; <a name="l00059"></a>00059 UInt32 d_inputBufferSizeFrames, d_inputBufferSizeBytes; <a name="l00060"></a>00060 UInt32 d_outputBufferSizeFrames, d_outputBufferSizeBytes; <a name="l00061"></a>00061 UInt32 d_deviceBufferSizeFrames, d_deviceBufferSizeBytes; <a name="l00062"></a>00062 UInt32 d_leadSizeFrames, d_leadSizeBytes; <a name="l00063"></a>00063 UInt32 d_trailSizeFrames, d_trailSizeBytes; <a name="l00064"></a>00064 UInt32 d_extraBufferSizeFrames, d_extraBufferSizeBytes; <a name="l00065"></a>00065 UInt32 d_queueSampleCount, d_max_sample_count; <a name="l00066"></a>00066 UInt32 d_n_AvailableInputFrames, d_n_ActualInputFrames; <a name="l00067"></a>00067 UInt32 d_n_user_channels, d_n_max_channels, d_n_deviceChannels; <a name="l00068"></a>00068 <span class="keywordtype">bool</span> d_do_block, d_passThrough, d_waiting_for_data; <a name="l00069"></a>00069 <a class="code" href="classmld__mutex__t.html">mld_mutex_ptr</a> d_internal; <a name="l00070"></a>00070 <a class="code" href="classmld__condition__t.html">mld_condition_ptr</a> d_cond_data; <a name="l00071"></a>00071 <a class="code" href="classcircular__buffer.html">circular_buffer<float></a>** d_buffers; <a name="l00072"></a>00072 <a name="l00073"></a>00073 <span class="comment">// AudioUnits and Such</span> <a name="l00074"></a>00074 AudioUnit d_InputAU; <a name="l00075"></a>00075 AudioBufferList* d_InputBuffer; <a name="l00076"></a>00076 AudioBufferList* d_OutputBuffer; <a name="l00077"></a>00077 AudioConverterRef d_AudioConverter; <a name="l00078"></a>00078 <a name="l00079"></a>00079 <span class="keyword">protected</span>: <a name="l00080"></a>00080 <a class="code" href="classaudio__osx__source.html#ad1999c15b0c96b1746ff25bdc2da97a5">audio_osx_source</a> (<span class="keywordtype">int</span> sample_rate = 44100, <a name="l00081"></a>00081 <span class="keyword">const</span> std::string device_name = <span class="stringliteral">""</span>, <a name="l00082"></a>00082 <span class="keywordtype">bool</span> do_block = <span class="keyword">true</span>, <a name="l00083"></a>00083 <span class="keywordtype">int</span> channel_config = -1, <a name="l00084"></a>00084 <span class="keywordtype">int</span> max_sample_count = -1); <a name="l00085"></a>00085 <a name="l00086"></a>00086 <span class="keyword">public</span>: <a name="l00087"></a>00087 <a class="code" href="classaudio__osx__source.html#aff4c56407d1602f1986338211e975222">~audio_osx_source</a> (); <a name="l00088"></a>00088 <a name="l00089"></a>00089 <span class="keywordtype">bool</span> <a class="code" href="classaudio__osx__source.html#a783cf6498ede9ffb14396b72fffbb731" title="Called to enable drivers, etc for i/o devices.">start</a> (); <a name="l00090"></a>00090 <span class="keywordtype">bool</span> <a class="code" href="classaudio__osx__source.html#a902595b2e1886706ffbca4465ea71e04" title="Called to disable drivers, etc for i/o devices.">stop</a> (); <a name="l00091"></a>00091 <span class="keywordtype">bool</span> <a class="code" href="classaudio__osx__source.html#a5bd8338506d281198a754d7e0342c701">IsRunning</a> (); <a name="l00092"></a>00092 <a name="l00093"></a>00093 <span class="keywordtype">bool</span> <a class="code" href="classaudio__osx__source.html#a3a89cbd64f5112de6231ef7d25bcdfb2" title="Confirm that ninputs and noutputs is an acceptable combination.">check_topology</a> (<span class="keywordtype">int</span> ninputs, <span class="keywordtype">int</span> noutputs); <a name="l00094"></a>00094 <a name="l00095"></a>00095 <span class="keywordtype">int</span> <a class="code" href="classaudio__osx__source.html#a54dfec211e4fca4f58891ed65a7c25bc" 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="l00096"></a>00096 <a class="code" href="classstd_1_1vector.html">gr_vector_const_void_star</a> &input_items, <a name="l00097"></a>00097 <a class="code" href="classstd_1_1vector.html">gr_vector_void_star</a> &output_items); <a name="l00098"></a>00098 <a name="l00099"></a>00099 <span class="keyword">private</span>: <a name="l00100"></a>00100 <span class="keywordtype">void</span> SetDefaultInputDeviceAsCurrent (); <a name="l00101"></a>00101 <a name="l00102"></a>00102 <span class="keywordtype">void</span> AllocAudioBufferList (AudioBufferList** t_ABL, <a name="l00103"></a>00103 UInt32 n_channels, <a name="l00104"></a>00104 UInt32 inputBufferSizeBytes); <a name="l00105"></a>00105 <a name="l00106"></a>00106 <span class="keywordtype">void</span> FreeAudioBufferList (AudioBufferList** t_ABL); <a name="l00107"></a>00107 <a name="l00108"></a>00108 <span class="keyword">static</span> OSStatus ConverterCallback (AudioConverterRef inAudioConverter, <a name="l00109"></a>00109 UInt32* ioNumberDataPackets, <a name="l00110"></a>00110 AudioBufferList* ioData, <a name="l00111"></a>00111 AudioStreamPacketDescription** outASPD, <a name="l00112"></a>00112 <span class="keywordtype">void</span>* inUserData); <a name="l00113"></a>00113 <a name="l00114"></a>00114 <span class="keyword">static</span> OSStatus AUInputCallback (<span class="keywordtype">void</span> *inRefCon, <a name="l00115"></a>00115 AudioUnitRenderActionFlags *ioActionFlags, <a name="l00116"></a>00116 <span class="keyword">const</span> AudioTimeStamp *inTimeStamp, <a name="l00117"></a>00117 UInt32 inBusNumber, <a name="l00118"></a>00118 UInt32 inNumberFrames, <a name="l00119"></a>00119 AudioBufferList *ioData); <a name="l00120"></a>00120 <span class="preprocessor">#if _OSX_DO_LISTENERS_</span> <a name="l00121"></a>00121 <span class="preprocessor"></span> <span class="keyword">static</span> OSStatus UnitListener (<span class="keywordtype">void</span> *inRefCon, <a name="l00122"></a>00122 AudioUnit ci, <a name="l00123"></a>00123 AudioUnitPropertyID inID, <a name="l00124"></a>00124 AudioUnitScope inScope, <a name="l00125"></a>00125 AudioUnitElement inElement); <a name="l00126"></a>00126 <a name="l00127"></a>00127 <span class="keyword">static</span> OSStatus HardwareListener (AudioHardwarePropertyID inPropertyID, <a name="l00128"></a>00128 <span class="keywordtype">void</span> *inClientData); <a name="l00129"></a>00129 <span class="preprocessor">#endif</span> <a name="l00130"></a>00130 <span class="preprocessor"></span>}; <a name="l00131"></a>00131 <a name="l00132"></a>00132 <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_AUDIO_OSX_SOURCE_H */</span> </pre></div></div> <hr size="1"/><address style="text-align: right;"><small>Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address> </body> </html>