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  1. <HTML>

  2. <HEAD>

  3. <TITLE>The RtAudio Home Page</TITLE>

  4. <LINK HREF="doxygen.css" REL="stylesheet" TYPE="text/css">

  5. <LINK REL="SHORTCUT ICON" HREF="http://www.music.mcgill.ca/~gary/favicon.ico">

  6. </HEAD>

  7. <BODY BGCOLOR="#FFFFFF">

  8. <CENTER>

  9. <a class="qindex" href="index.html">Home</a> &nbsp; <a class="qindex" href="annotated.html">Class/Enum List</a> &nbsp; <a class="qindex" href="files.html">File List</a> &nbsp; <a class="qindex" href="functions.html">Compound Members</a> &nbsp; </CENTER>

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  11. <!-- Generated by Doxygen 1.5.8 -->

  12. <h1>RtAudio.h</h1><a href="RtAudio_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/************************************************************************/</span>

  13. <a name="l00039"></a>00039 <span class="comment">/************************************************************************/</span>

  14. <a name="l00040"></a>00040 

  15. <a name="l00045"></a>00045 <span class="comment">// RtAudio: Version 4.0.6</span>

  16. <a name="l00046"></a>00046 

  17. <a name="l00047"></a>00047 <span class="preprocessor">#ifndef __RTAUDIO_H</span>

  18. <a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor">#define __RTAUDIO_H</span>

  19. <a name="l00049"></a>00049 <span class="preprocessor"></span>

  20. <a name="l00050"></a>00050 <span class="preprocessor">#include &lt;string&gt;</span>

  21. <a name="l00051"></a>00051 <span class="preprocessor">#include &lt;vector&gt;</span>

  22. <a name="l00052"></a>00052 <span class="preprocessor">#include "RtError.h"</span>

  23. <a name="l00053"></a>00053 

  24. <a name="l00070"></a><a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8">00070</a> <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a>;

  25. <a name="l00071"></a>00071 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> RTAUDIO_SINT8 = 0x1;    <span class="comment">// 8-bit signed integer.</span>

  26. <a name="l00072"></a>00072 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> RTAUDIO_SINT16 = 0x2;   <span class="comment">// 16-bit signed integer.</span>

  27. <a name="l00073"></a>00073 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> RTAUDIO_SINT24 = 0x4;   <span class="comment">// Lower 3 bytes of 32-bit signed integer.</span>

  28. <a name="l00074"></a>00074 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> RTAUDIO_SINT32 = 0x8;   <span class="comment">// 32-bit signed integer.</span>

  29. <a name="l00075"></a>00075 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> RTAUDIO_FLOAT32 = 0x10; <span class="comment">// Normalized between plus/minus 1.0.</span>

  30. <a name="l00076"></a>00076 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> RTAUDIO_FLOAT64 = 0x20; <span class="comment">// Normalized between plus/minus 1.0.</span>

  31. <a name="l00077"></a>00077 

  32. <a name="l00115"></a><a class="code" href="RtAudio_8h.html#2c0f59b200dcec4d4e760f9166b29c41">00115</a> <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="RtAudio_8h.html#2c0f59b200dcec4d4e760f9166b29c41" title="RtAudio stream option flags.">RtAudioStreamFlags</a>;

  33. <a name="l00116"></a>00116 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#2c0f59b200dcec4d4e760f9166b29c41" title="RtAudio stream option flags.">RtAudioStreamFlags</a> RTAUDIO_NONINTERLEAVED = 0x1;    <span class="comment">// Use non-interleaved buffers (default = interleaved).</span>

  34. <a name="l00117"></a>00117 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#2c0f59b200dcec4d4e760f9166b29c41" title="RtAudio stream option flags.">RtAudioStreamFlags</a> RTAUDIO_MINIMIZE_LATENCY = 0x2;  <span class="comment">// Attempt to set stream parameters for lowest possible latency.</span>

  35. <a name="l00118"></a>00118 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#2c0f59b200dcec4d4e760f9166b29c41" title="RtAudio stream option flags.">RtAudioStreamFlags</a> RTAUDIO_HOG_DEVICE = 0x4;        <span class="comment">// Attempt grab device and prevent use by others.</span>

  36. <a name="l00119"></a>00119 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#2c0f59b200dcec4d4e760f9166b29c41" title="RtAudio stream option flags.">RtAudioStreamFlags</a> RTAUDIO_SCHEDULE_REALTIME = 0x8; <span class="comment">// Try to select realtime scheduling for callback thread.</span>

  37. <a name="l00120"></a>00120 

  38. <a name="l00132"></a><a class="code" href="RtAudio_8h.html#80e306d363583da3b0a1b65d9b57c806">00132</a> <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="RtAudio_8h.html#80e306d363583da3b0a1b65d9b57c806" title="RtAudio stream status (over- or underflow) flags.">RtAudioStreamStatus</a>;

  39. <a name="l00133"></a>00133 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#80e306d363583da3b0a1b65d9b57c806" title="RtAudio stream status (over- or underflow) flags.">RtAudioStreamStatus</a> RTAUDIO_INPUT_OVERFLOW = 0x1;    <span class="comment">// Input data was discarded because of an overflow condition at the driver.</span>

  40. <a name="l00134"></a>00134 <span class="keyword">static</span> <span class="keyword">const</span> <a class="code" href="RtAudio_8h.html#80e306d363583da3b0a1b65d9b57c806" title="RtAudio stream status (over- or underflow) flags.">RtAudioStreamStatus</a> RTAUDIO_OUTPUT_UNDERFLOW = 0x2;  <span class="comment">// The output buffer ran low, likely causing a gap in the output sound.</span>

  41. <a name="l00135"></a>00135 

  42. <a name="l00137"></a>00137 

  43. <a name="l00175"></a><a class="code" href="RtAudio_8h.html#112c7b7e25a974977f6fc094cef1a31f">00175</a> <span class="keyword">typedef</span> int (*<a class="code" href="RtAudio_8h.html#112c7b7e25a974977f6fc094cef1a31f" title="RtAudio callback function prototype.">RtAudioCallback</a>)( <span class="keywordtype">void</span> *outputBuffer, <span class="keywordtype">void</span> *inputBuffer,

  44. <a name="l00176"></a>00176                                 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nFrames,

  45. <a name="l00177"></a>00177                                 <span class="keywordtype">double</span> streamTime,

  46. <a name="l00178"></a>00178                                 <a class="code" href="RtAudio_8h.html#80e306d363583da3b0a1b65d9b57c806" title="RtAudio stream status (over- or underflow) flags.">RtAudioStreamStatus</a> status,

  47. <a name="l00179"></a>00179                                 <span class="keywordtype">void</span> *userData );

  48. <a name="l00180"></a>00180 

  49. <a name="l00181"></a>00181 

  50. <a name="l00182"></a>00182 <span class="comment">// **************************************************************** //</span>

  51. <a name="l00183"></a>00183 <span class="comment">//</span>

  52. <a name="l00184"></a>00184 <span class="comment">// RtAudio class declaration.</span>

  53. <a name="l00185"></a>00185 <span class="comment">//</span>

  54. <a name="l00186"></a>00186 <span class="comment">// RtAudio is a "controller" used to select an available audio i/o</span>

  55. <a name="l00187"></a>00187 <span class="comment">// interface.  It presents a common API for the user to call but all</span>

  56. <a name="l00188"></a>00188 <span class="comment">// functionality is implemented by the class RtApi and its</span>

  57. <a name="l00189"></a>00189 <span class="comment">// subclasses.  RtAudio creates an instance of an RtApi subclass</span>

  58. <a name="l00190"></a>00190 <span class="comment">// based on the user's API choice.  If no choice is made, RtAudio</span>

  59. <a name="l00191"></a>00191 <span class="comment">// attempts to make a "logical" API selection.</span>

  60. <a name="l00192"></a>00192 <span class="comment">//</span>

  61. <a name="l00193"></a>00193 <span class="comment">// **************************************************************** //</span>

  62. <a name="l00194"></a>00194 

  63. <a name="l00195"></a>00195 <span class="keyword">class </span>RtApi;

  64. <a name="l00196"></a>00196 

  65. <a name="l00197"></a><a class="code" href="classRtAudio.html">00197</a> <span class="keyword">class </span><a class="code" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a>

  66. <a name="l00198"></a>00198 {

  67. <a name="l00199"></a>00199  <span class="keyword">public</span>:

  68. <a name="l00200"></a>00200 

  69. <a name="l00202"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849">00202</a>   <span class="keyword">enum</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">Api</a> {

  70. <a name="l00203"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849a49af3ac767106158bc6cad74fb214ae">00203</a>     <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849a49af3ac767106158bc6cad74fb214ae">UNSPECIFIED</a>,    

  71. <a name="l00204"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849a7a2ba095c2806caa893b6fb8fc3a1a8">00204</a>     <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849a7a2ba095c2806caa893b6fb8fc3a1a8">LINUX_ALSA</a>,     

  72. <a name="l00205"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d84939c84615e61de75e6a4e865596d62c82">00205</a>     <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d84939c84615e61de75e6a4e865596d62c82">LINUX_OSS</a>,      

  73. <a name="l00206"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d8494767e17c6edfbd827f91763915df4105">00206</a>     <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d8494767e17c6edfbd827f91763915df4105">UNIX_JACK</a>,      

  74. <a name="l00207"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d8499fec92b8272244a87a6a11a717bd662d">00207</a>     <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d8499fec92b8272244a87a6a11a717bd662d">MACOSX_CORE</a>,    

  75. <a name="l00208"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849219517d1df90f94d07758481155bd469">00208</a>     <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849219517d1df90f94d07758481155bd469">WINDOWS_ASIO</a>,   

  76. <a name="l00209"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d84928478830f42c2fd61e6c7ad498901931">00209</a>     <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d84928478830f42c2fd61e6c7ad498901931">WINDOWS_DS</a>,     

  77. <a name="l00210"></a><a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849b06b8fd88bf18c9a2b8271f6961ae2d1">00210</a>     <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849b06b8fd88bf18c9a2b8271f6961ae2d1">RTAUDIO_DUMMY</a>   

  78. <a name="l00211"></a>00211   };

  79. <a name="l00212"></a>00212 

  80. <a name="l00214"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html">00214</a>   <span class="keyword">struct </span><a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">DeviceInfo</a> {

  81. <a name="l00215"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#5bf008c629ef493c713ec870d0217407">00215</a>     <span class="keywordtype">bool</span> <a class="code" href="structRtAudio_1_1DeviceInfo.html#5bf008c629ef493c713ec870d0217407">probed</a>;                  

  82. <a name="l00216"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#a0e2ea10c52c206c9e105ac76b01f194">00216</a>     std::string <a class="code" href="structRtAudio_1_1DeviceInfo.html#a0e2ea10c52c206c9e105ac76b01f194">name</a>;             

  83. <a name="l00217"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#185f8aac1095de4fbb6e0076875d24c4">00217</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structRtAudio_1_1DeviceInfo.html#185f8aac1095de4fbb6e0076875d24c4">outputChannels</a>;  

  84. <a name="l00218"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#731b31adf84c550ab98329be1baa58b4">00218</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structRtAudio_1_1DeviceInfo.html#731b31adf84c550ab98329be1baa58b4">inputChannels</a>;   

  85. <a name="l00219"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#ca6ecfb8b5b8c114c54809d8af50ee5b">00219</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structRtAudio_1_1DeviceInfo.html#ca6ecfb8b5b8c114c54809d8af50ee5b">duplexChannels</a>;  

  86. <a name="l00220"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#af74fc23f451fdd22ed073a47f0db674">00220</a>     <span class="keywordtype">bool</span> <a class="code" href="structRtAudio_1_1DeviceInfo.html#af74fc23f451fdd22ed073a47f0db674">isDefaultOutput</a>;         

  87. <a name="l00221"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#a8b03618fa1d4c051f6add14bb031728">00221</a>     <span class="keywordtype">bool</span> <a class="code" href="structRtAudio_1_1DeviceInfo.html#a8b03618fa1d4c051f6add14bb031728">isDefaultInput</a>;          

  88. <a name="l00222"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#5b158efcbfbd30e7226df92d0109d475">00222</a>     std::vector&lt;unsigned int&gt; <a class="code" href="structRtAudio_1_1DeviceInfo.html#5b158efcbfbd30e7226df92d0109d475">sampleRates</a>; 

  89. <a name="l00223"></a><a class="code" href="structRtAudio_1_1DeviceInfo.html#97559ee4a1f2c8cfb765949e6193e1f4">00223</a>     <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> <a class="code" href="structRtAudio_1_1DeviceInfo.html#97559ee4a1f2c8cfb765949e6193e1f4">nativeFormats</a>;  

  90. <a name="l00225"></a>00225     <span class="comment">// Default constructor.</span>

  91. <a name="l00226"></a>00226     <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">DeviceInfo</a>()

  92. <a name="l00227"></a>00227       :<a class="code" href="structRtAudio_1_1DeviceInfo.html#5bf008c629ef493c713ec870d0217407">probed</a>(false), <a class="code" href="structRtAudio_1_1DeviceInfo.html#185f8aac1095de4fbb6e0076875d24c4">outputChannels</a>(0), <a class="code" href="structRtAudio_1_1DeviceInfo.html#731b31adf84c550ab98329be1baa58b4">inputChannels</a>(0), <a class="code" href="structRtAudio_1_1DeviceInfo.html#ca6ecfb8b5b8c114c54809d8af50ee5b">duplexChannels</a>(0),

  93. <a name="l00228"></a>00228        <a class="code" href="structRtAudio_1_1DeviceInfo.html#af74fc23f451fdd22ed073a47f0db674">isDefaultOutput</a>(false), <a class="code" href="structRtAudio_1_1DeviceInfo.html#a8b03618fa1d4c051f6add14bb031728">isDefaultInput</a>(false), <a class="code" href="structRtAudio_1_1DeviceInfo.html#97559ee4a1f2c8cfb765949e6193e1f4">nativeFormats</a>(0) {}

  94. <a name="l00229"></a>00229   };

  95. <a name="l00230"></a>00230 

  96. <a name="l00232"></a><a class="code" href="structRtAudio_1_1StreamParameters.html">00232</a>   <span class="keyword">struct </span><a class="code" href="structRtAudio_1_1StreamParameters.html" title="The structure for specifying input or ouput stream parameters.">StreamParameters</a> {

  97. <a name="l00233"></a><a class="code" href="structRtAudio_1_1StreamParameters.html#ffd27496c70c0986522056234c64e28e">00233</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structRtAudio_1_1StreamParameters.html#ffd27496c70c0986522056234c64e28e">deviceId</a>;     

  98. <a name="l00234"></a><a class="code" href="structRtAudio_1_1StreamParameters.html#78798b65fada7941e1a7e47c11c9e627">00234</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structRtAudio_1_1StreamParameters.html#78798b65fada7941e1a7e47c11c9e627">nChannels</a>;    

  99. <a name="l00235"></a><a class="code" href="structRtAudio_1_1StreamParameters.html#ddc8281f23a87455ec6dedbc766a74db">00235</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structRtAudio_1_1StreamParameters.html#ddc8281f23a87455ec6dedbc766a74db">firstChannel</a>; 

  100. <a name="l00237"></a>00237     <span class="comment">// Default constructor.</span>

  101. <a name="l00238"></a>00238     <a class="code" href="structRtAudio_1_1StreamParameters.html" title="The structure for specifying input or ouput stream parameters.">StreamParameters</a>()

  102. <a name="l00239"></a>00239       : <a class="code" href="structRtAudio_1_1StreamParameters.html#ffd27496c70c0986522056234c64e28e">deviceId</a>(0), <a class="code" href="structRtAudio_1_1StreamParameters.html#78798b65fada7941e1a7e47c11c9e627">nChannels</a>(0), <a class="code" href="structRtAudio_1_1StreamParameters.html#ddc8281f23a87455ec6dedbc766a74db">firstChannel</a>(0) {}

  103. <a name="l00240"></a>00240   };

  104. <a name="l00241"></a>00241 

  105. <a name="l00243"></a>00243 

  106. <a name="l00294"></a><a class="code" href="structRtAudio_1_1StreamOptions.html">00294</a>   <span class="keyword">struct </span><a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">StreamOptions</a> {

  107. <a name="l00295"></a><a class="code" href="structRtAudio_1_1StreamOptions.html#6a284d045b8adcfcf178a4f6a22330f8">00295</a>     <a class="code" href="RtAudio_8h.html#2c0f59b200dcec4d4e760f9166b29c41" title="RtAudio stream option flags.">RtAudioStreamFlags</a> <a class="code" href="structRtAudio_1_1StreamOptions.html#6a284d045b8adcfcf178a4f6a22330f8">flags</a>;      

  108. <a name="l00296"></a><a class="code" href="structRtAudio_1_1StreamOptions.html#5a04d3c3d0c1cfa063872ecff383af1d">00296</a>     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="structRtAudio_1_1StreamOptions.html#5a04d3c3d0c1cfa063872ecff383af1d">numberOfBuffers</a>;  

  109. <a name="l00297"></a><a class="code" href="structRtAudio_1_1StreamOptions.html#214da35056f18ffb7c8e4dc074a01a9a">00297</a>     std::string <a class="code" href="structRtAudio_1_1StreamOptions.html#214da35056f18ffb7c8e4dc074a01a9a">streamName</a>;        

  110. <a name="l00298"></a><a class="code" href="structRtAudio_1_1StreamOptions.html#81b364f137d1ee1073b74dac666af352">00298</a>     <span class="keywordtype">int</span> <a class="code" href="structRtAudio_1_1StreamOptions.html#81b364f137d1ee1073b74dac666af352">priority</a>;                  

  111. <a name="l00300"></a>00300     <span class="comment">// Default constructor.</span>

  112. <a name="l00301"></a>00301     <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">StreamOptions</a>()

  113. <a name="l00302"></a>00302     : <a class="code" href="structRtAudio_1_1StreamOptions.html#6a284d045b8adcfcf178a4f6a22330f8">flags</a>(0), <a class="code" href="structRtAudio_1_1StreamOptions.html#5a04d3c3d0c1cfa063872ecff383af1d">numberOfBuffers</a>(0), <a class="code" href="structRtAudio_1_1StreamOptions.html#81b364f137d1ee1073b74dac666af352">priority</a>(0) {}

  114. <a name="l00303"></a>00303   };

  115. <a name="l00304"></a>00304 

  116. <a name="l00306"></a>00306 

  117. <a name="l00311"></a>00311   <span class="keyword">static</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#e266ffad2ef428d0b2c6c262d391ce26" title="A static function to determine the available compiled audio APIs.">getCompiledApi</a>( std::vector&lt;RtAudio::Api&gt; &amp;apis ) <span class="keywordflow">throw</span>();

  118. <a name="l00312"></a>00312 

  119. <a name="l00314"></a>00314 

  120. <a name="l00322"></a>00322   <a class="code" href="classRtAudio.html#fd0bfa26deae9804e18faff59d0273d9" title="The class constructor.">RtAudio</a>( <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> api=<a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849a49af3ac767106158bc6cad74fb214ae">UNSPECIFIED</a> ) throw();

  121. <a name="l00323"></a>00323 

  122. <a name="l00325"></a>00325 

  123. <a name="l00329"></a>00329   ~<a class="code" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a>() throw();

  124. <a name="l00330"></a>00330 

  125. <a name="l00332"></a>00332   <a class="code" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a>::<a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">Api</a> <a class="code" href="classRtAudio.html#83687634795792b2c47e4ae1cf8a5246" title="Returns the audio API specifier for the current instance of RtAudio.">getCurrentApi</a>( <span class="keywordtype">void</span> ) throw();

  126. <a name="l00333"></a>00333 

  127. <a name="l00335"></a>00335 

  128. <a name="l00340"></a>00340   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#747ce2d73803641bbb66d6e78092aa1a" title="A public function that queries for the number of audio devices available.">getDeviceCount</a>( <span class="keywordtype">void</span> ) throw();

  129. <a name="l00341"></a>00341 

  130. <a name="l00343"></a>00343 

  131. <a name="l00353"></a>00353   <a class="code" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a>::DeviceInfo <a class="code" href="classRtAudio.html#02d7ff44ad1d7eae22283a052f3dfda8" title="Return an RtAudio::DeviceInfo structure for a specified device number.">getDeviceInfo</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device );

  132. <a name="l00354"></a>00354 

  133. <a name="l00356"></a>00356 

  134. <a name="l00363"></a>00363   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#3a3f3dbe13ea696b521e49cdaaa357bc" title="A function that returns the index of the default output device.">getDefaultOutputDevice</a>( <span class="keywordtype">void</span> ) throw();

  135. <a name="l00364"></a>00364 

  136. <a name="l00366"></a>00366 

  137. <a name="l00373"></a>00373   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#ad8b94edd3cd379ee300b125750ac6ce" title="A function that returns the index of the default input device.">getDefaultInputDevice</a>( <span class="keywordtype">void</span> ) throw();

  138. <a name="l00374"></a>00374 

  139. <a name="l00376"></a>00376 

  140. <a name="l00413"></a>00413   <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#facc99740fa4c5606fb35467cdea6da8" title="A public function for opening a stream with the specified parameters.">openStream</a>( <a class="code" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a>::StreamParameters *outputParameters,

  141. <a name="l00414"></a>00414                    <a class="code" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a>::StreamParameters *inputParameters,

  142. <a name="l00415"></a>00415                    <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  143. <a name="l00416"></a>00416                    <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferFrames, <a class="code" href="RtAudio_8h.html#112c7b7e25a974977f6fc094cef1a31f" title="RtAudio callback function prototype.">RtAudioCallback</a> callback,

  144. <a name="l00417"></a>00417                    <span class="keywordtype">void</span> *userData = NULL, <a class="code" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a>::StreamOptions *options = NULL );

  145. <a name="l00418"></a>00418 

  146. <a name="l00420"></a>00420 

  147. <a name="l00424"></a>00424   <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#90d599002ad32cf250a4cb866f2cc93a" title="A function that closes a stream and frees any associated stream memory.">closeStream</a>( <span class="keywordtype">void</span> ) throw();

  148. <a name="l00425"></a>00425 

  149. <a name="l00427"></a>00427 

  150. <a name="l00433"></a>00433   <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#ec017a89629ccef66a90b60be22a2f80" title="A function that starts a stream.">startStream</a>( <span class="keywordtype">void</span> );

  151. <a name="l00434"></a>00434 

  152. <a name="l00436"></a>00436 

  153. <a name="l00442"></a>00442   <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#f4c241ff86936ecc8108f0d9dfe3efdd" title="Stop a stream, allowing any samples remaining in the output queue to be played.">stopStream</a>( <span class="keywordtype">void</span> );

  154. <a name="l00443"></a>00443 

  155. <a name="l00445"></a>00445 

  156. <a name="l00451"></a>00451   <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#d0586b47cd6bb9591a80b4052815991f" title="Stop a stream, discarding any samples remaining in the input/output queue.">abortStream</a>( <span class="keywordtype">void</span> );

  157. <a name="l00452"></a>00452 

  158. <a name="l00454"></a>00454   <span class="keywordtype">bool</span> <a class="code" href="classRtAudio.html#3863e45ff81dbe97176de0ee7545917f" title="Returns true if a stream is open and false if not.">isStreamOpen</a>( <span class="keywordtype">void</span> ) const throw();

  159. <a name="l00455"></a>00455 

  160. <a name="l00457"></a>00457   <span class="keywordtype">bool</span> <a class="code" href="classRtAudio.html#84cc8d9b7ab9bc5f37bcf48430ec5aea" title="Returns true if the stream is running and false if it is stopped or not open.">isStreamRunning</a>( <span class="keywordtype">void</span> ) const throw();

  161. <a name="l00458"></a>00458 

  162. <a name="l00460"></a>00460 

  163. <a name="l00463"></a>00463   <span class="keywordtype">double</span> <a class="code" href="classRtAudio.html#344e59a62353c5791db4621b985cb2ca" title="Returns the number of elapsed seconds since the stream was started.">getStreamTime</a>( <span class="keywordtype">void</span> );

  164. <a name="l00464"></a>00464 

  165. <a name="l00466"></a>00466 

  166. <a name="l00474"></a>00474   <span class="keywordtype">long</span> <a class="code" href="classRtAudio.html#843c989d9f501c71bc2f2c5ca18df9f3" title="Returns the internal stream latency in sample frames.">getStreamLatency</a>( <span class="keywordtype">void</span> );

  167. <a name="l00475"></a>00475 

  168. <a name="l00477"></a>00477 

  169. <a name="l00482"></a>00482   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#28214b8b05d60b45c24ee6fae7b2a0b5" title="Returns actual sample rate in use by the stream.">getStreamSampleRate</a>( <span class="keywordtype">void</span> );

  170. <a name="l00483"></a>00483 

  171. <a name="l00485"></a>00485   <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#f0752ee51cce3dd90a3bd009f9fdbe77" title="Specify whether warning messages should be printed to stderr.">showWarnings</a>( <span class="keywordtype">bool</span> value = true ) throw();

  172. <a name="l00486"></a>00486 

  173. <a name="l00487"></a>00487  protected:

  174. <a name="l00488"></a>00488 

  175. <a name="l00489"></a>00489   <span class="keywordtype">void</span> openRtApi( <a class="code" href="classRtAudio.html" title="Realtime audio i/o C++ classes.">RtAudio</a>::<a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">Api</a> api );

  176. <a name="l00490"></a>00490   RtApi *rtapi_;

  177. <a name="l00491"></a>00491 };

  178. <a name="l00492"></a>00492 

  179. <a name="l00493"></a>00493 <span class="comment">// Operating system dependent thread functionality.</span>

  180. <a name="l00494"></a>00494 <span class="preprocessor">#if defined(__WINDOWS_DS__) || defined(__WINDOWS_ASIO__)</span>

  181. <a name="l00495"></a>00495 <span class="preprocessor"></span><span class="preprocessor">  #include &lt;windows.h&gt;</span>

  182. <a name="l00496"></a>00496 <span class="preprocessor">  #include &lt;process.h&gt;</span>

  183. <a name="l00497"></a>00497 

  184. <a name="l00498"></a>00498   <span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> ThreadHandle;

  185. <a name="l00499"></a>00499   <span class="keyword">typedef</span> CRITICAL_SECTION StreamMutex;

  186. <a name="l00500"></a>00500 

  187. <a name="l00501"></a>00501 <span class="preprocessor">#elif defined(__LINUX_ALSA__) || defined(__UNIX_JACK__) || defined(__LINUX_OSS__) || defined(__MACOSX_CORE__)</span>

  188. <a name="l00502"></a>00502 <span class="preprocessor"></span>  <span class="comment">// Using pthread library for various flavors of unix.</span>

  189. <a name="l00503"></a>00503 <span class="preprocessor">  #include &lt;pthread.h&gt;</span>

  190. <a name="l00504"></a>00504 

  191. <a name="l00505"></a>00505   <span class="keyword">typedef</span> pthread_t ThreadHandle;

  192. <a name="l00506"></a>00506   <span class="keyword">typedef</span> pthread_mutex_t StreamMutex;

  193. <a name="l00507"></a>00507 

  194. <a name="l00508"></a>00508 <span class="preprocessor">#else // Setup for "dummy" behavior</span>

  195. <a name="l00509"></a>00509 <span class="preprocessor"></span>

  196. <a name="l00510"></a>00510 <span class="preprocessor">  #define __RTAUDIO_DUMMY__</span>

  197. <a name="l00511"></a>00511 <span class="preprocessor"></span>  <span class="keyword">typedef</span> <span class="keywordtype">int</span> ThreadHandle;

  198. <a name="l00512"></a>00512   <span class="keyword">typedef</span> <span class="keywordtype">int</span> StreamMutex;

  199. <a name="l00513"></a>00513 

  200. <a name="l00514"></a>00514 <span class="preprocessor">#endif</span>

  201. <a name="l00515"></a>00515 <span class="preprocessor"></span>

  202. <a name="l00516"></a>00516 <span class="comment">// This global structure type is used to pass callback information</span>

  203. <a name="l00517"></a>00517 <span class="comment">// between the private RtAudio stream structure and global callback</span>

  204. <a name="l00518"></a>00518 <span class="comment">// handling functions.</span>

  205. <a name="l00519"></a>00519 <span class="keyword">struct </span>CallbackInfo {

  206. <a name="l00520"></a>00520   <span class="keywordtype">void</span> *object;    <span class="comment">// Used as a "this" pointer.</span>

  207. <a name="l00521"></a>00521   ThreadHandle thread;

  208. <a name="l00522"></a>00522   <span class="keywordtype">void</span> *callback;

  209. <a name="l00523"></a>00523   <span class="keywordtype">void</span> *userData;

  210. <a name="l00524"></a>00524   <span class="keywordtype">void</span> *apiInfo;   <span class="comment">// void pointer for API specific callback information</span>

  211. <a name="l00525"></a>00525   <span class="keywordtype">bool</span> isRunning;

  212. <a name="l00526"></a>00526 

  213. <a name="l00527"></a>00527   <span class="comment">// Default constructor.</span>

  214. <a name="l00528"></a>00528   CallbackInfo()

  215. <a name="l00529"></a>00529     :object(0), callback(0), userData(0), apiInfo(0), isRunning(false) {}

  216. <a name="l00530"></a>00530 };

  217. <a name="l00531"></a>00531 

  218. <a name="l00532"></a>00532 <span class="comment">// **************************************************************** //</span>

  219. <a name="l00533"></a>00533 <span class="comment">//</span>

  220. <a name="l00534"></a>00534 <span class="comment">// RtApi class declaration.</span>

  221. <a name="l00535"></a>00535 <span class="comment">//</span>

  222. <a name="l00536"></a>00536 <span class="comment">// Subclasses of RtApi contain all API- and OS-specific code necessary</span>

  223. <a name="l00537"></a>00537 <span class="comment">// to fully implement the RtAudio API.</span>

  224. <a name="l00538"></a>00538 <span class="comment">//</span>

  225. <a name="l00539"></a>00539 <span class="comment">// Note that RtApi is an abstract base class and cannot be</span>

  226. <a name="l00540"></a>00540 <span class="comment">// explicitly instantiated.  The class RtAudio will create an</span>

  227. <a name="l00541"></a>00541 <span class="comment">// instance of an RtApi subclass (RtApiOss, RtApiAlsa,</span>

  228. <a name="l00542"></a>00542 <span class="comment">// RtApiJack, RtApiCore, RtApiAl, RtApiDs, or RtApiAsio).</span>

  229. <a name="l00543"></a>00543 <span class="comment">//</span>

  230. <a name="l00544"></a>00544 <span class="comment">// **************************************************************** //</span>

  231. <a name="l00545"></a>00545 

  232. <a name="l00546"></a>00546 <span class="preprocessor">#if defined( HAVE_GETTIMEOFDAY )</span>

  233. <a name="l00547"></a>00547 <span class="preprocessor"></span><span class="preprocessor">  #include &lt;sys/time.h&gt;</span>

  234. <a name="l00548"></a>00548 <span class="preprocessor">#endif</span>

  235. <a name="l00549"></a>00549 <span class="preprocessor"></span>

  236. <a name="l00550"></a>00550 <span class="preprocessor">#include &lt;sstream&gt;</span>

  237. <a name="l00551"></a>00551 

  238. <a name="l00552"></a>00552 <span class="keyword">class </span>RtApi

  239. <a name="l00553"></a>00553 {

  240. <a name="l00554"></a>00554 <span class="keyword">public</span>:

  241. <a name="l00555"></a>00555 

  242. <a name="l00556"></a>00556   RtApi();

  243. <a name="l00557"></a>00557   <span class="keyword">virtual</span> ~RtApi();

  244. <a name="l00558"></a>00558   <span class="keyword">virtual</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> <a class="code" href="classRtAudio.html#83687634795792b2c47e4ae1cf8a5246" title="Returns the audio API specifier for the current instance of RtAudio.">getCurrentApi</a>( <span class="keywordtype">void</span> ) = 0;

  245. <a name="l00559"></a>00559   <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#747ce2d73803641bbb66d6e78092aa1a" title="A public function that queries for the number of audio devices available.">getDeviceCount</a>( <span class="keywordtype">void</span> ) = 0;

  246. <a name="l00560"></a>00560   <span class="keyword">virtual</span> <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> <a class="code" href="classRtAudio.html#02d7ff44ad1d7eae22283a052f3dfda8" title="Return an RtAudio::DeviceInfo structure for a specified device number.">getDeviceInfo</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device ) = 0;

  247. <a name="l00561"></a>00561   <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#ad8b94edd3cd379ee300b125750ac6ce" title="A function that returns the index of the default input device.">getDefaultInputDevice</a>( <span class="keywordtype">void</span> );

  248. <a name="l00562"></a>00562   <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#3a3f3dbe13ea696b521e49cdaaa357bc" title="A function that returns the index of the default output device.">getDefaultOutputDevice</a>( <span class="keywordtype">void</span> );

  249. <a name="l00563"></a>00563   <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#facc99740fa4c5606fb35467cdea6da8" title="A public function for opening a stream with the specified parameters.">openStream</a>( <a class="code" href="structRtAudio_1_1StreamParameters.html" title="The structure for specifying input or ouput stream parameters.">RtAudio::StreamParameters</a> *outputParameters,

  250. <a name="l00564"></a>00564                    <a class="code" href="structRtAudio_1_1StreamParameters.html" title="The structure for specifying input or ouput stream parameters.">RtAudio::StreamParameters</a> *inputParameters,

  251. <a name="l00565"></a>00565                    <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  252. <a name="l00566"></a>00566                    <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferFrames, <a class="code" href="RtAudio_8h.html#112c7b7e25a974977f6fc094cef1a31f" title="RtAudio callback function prototype.">RtAudioCallback</a> callback,

  253. <a name="l00567"></a>00567                    <span class="keywordtype">void</span> *userData, <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options );

  254. <a name="l00568"></a>00568   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#90d599002ad32cf250a4cb866f2cc93a" title="A function that closes a stream and frees any associated stream memory.">closeStream</a>( <span class="keywordtype">void</span> );

  255. <a name="l00569"></a>00569   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#ec017a89629ccef66a90b60be22a2f80" title="A function that starts a stream.">startStream</a>( <span class="keywordtype">void</span> ) = 0;

  256. <a name="l00570"></a>00570   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#f4c241ff86936ecc8108f0d9dfe3efdd" title="Stop a stream, allowing any samples remaining in the output queue to be played.">stopStream</a>( <span class="keywordtype">void</span> ) = 0;

  257. <a name="l00571"></a>00571   <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#d0586b47cd6bb9591a80b4052815991f" title="Stop a stream, discarding any samples remaining in the input/output queue.">abortStream</a>( <span class="keywordtype">void</span> ) = 0;

  258. <a name="l00572"></a>00572   <span class="keywordtype">long</span> <a class="code" href="classRtAudio.html#843c989d9f501c71bc2f2c5ca18df9f3" title="Returns the internal stream latency in sample frames.">getStreamLatency</a>( <span class="keywordtype">void</span> );

  259. <a name="l00573"></a>00573   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#28214b8b05d60b45c24ee6fae7b2a0b5" title="Returns actual sample rate in use by the stream.">getStreamSampleRate</a>( <span class="keywordtype">void</span> );

  260. <a name="l00574"></a>00574   <span class="keyword">virtual</span> <span class="keywordtype">double</span> <a class="code" href="classRtAudio.html#344e59a62353c5791db4621b985cb2ca" title="Returns the number of elapsed seconds since the stream was started.">getStreamTime</a>( <span class="keywordtype">void</span> );

  261. <a name="l00575"></a>00575   <span class="keywordtype">bool</span> <a class="code" href="classRtAudio.html#3863e45ff81dbe97176de0ee7545917f" title="Returns true if a stream is open and false if not.">isStreamOpen</a>( <span class="keywordtype">void</span> )<span class="keyword"> const </span>{ <span class="keywordflow">return</span> stream_.state != STREAM_CLOSED; };

  262. <a name="l00576"></a>00576   <span class="keywordtype">bool</span> <a class="code" href="classRtAudio.html#84cc8d9b7ab9bc5f37bcf48430ec5aea" title="Returns true if the stream is running and false if it is stopped or not open.">isStreamRunning</a>( <span class="keywordtype">void</span> )<span class="keyword"> const </span>{ <span class="keywordflow">return</span> stream_.state == STREAM_RUNNING; };

  263. <a name="l00577"></a>00577   <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#f0752ee51cce3dd90a3bd009f9fdbe77" title="Specify whether warning messages should be printed to stderr.">showWarnings</a>( <span class="keywordtype">bool</span> value ) { showWarnings_ = value; };

  264. <a name="l00578"></a>00578 

  265. <a name="l00579"></a>00579 

  266. <a name="l00580"></a>00580 <span class="keyword">protected</span>:

  267. <a name="l00581"></a>00581 

  268. <a name="l00582"></a>00582   <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> MAX_SAMPLE_RATES;

  269. <a name="l00583"></a>00583   <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SAMPLE_RATES[];

  270. <a name="l00584"></a>00584 

  271. <a name="l00585"></a>00585   <span class="keyword">enum</span> { FAILURE, SUCCESS };

  272. <a name="l00586"></a>00586 

  273. <a name="l00587"></a>00587   <span class="keyword">enum</span> StreamState {

  274. <a name="l00588"></a>00588     STREAM_STOPPED,

  275. <a name="l00589"></a>00589     STREAM_RUNNING,

  276. <a name="l00590"></a>00590     STREAM_CLOSED = -50

  277. <a name="l00591"></a>00591   };

  278. <a name="l00592"></a>00592 

  279. <a name="l00593"></a>00593   <span class="keyword">enum</span> StreamMode {

  280. <a name="l00594"></a>00594     OUTPUT,

  281. <a name="l00595"></a>00595     INPUT,

  282. <a name="l00596"></a>00596     DUPLEX,

  283. <a name="l00597"></a>00597     UNINITIALIZED = -75

  284. <a name="l00598"></a>00598   };

  285. <a name="l00599"></a>00599 

  286. <a name="l00600"></a>00600   <span class="comment">// A protected structure used for buffer conversion.</span>

  287. <a name="l00601"></a>00601   <span class="keyword">struct </span>ConvertInfo {

  288. <a name="l00602"></a>00602     <span class="keywordtype">int</span> channels;

  289. <a name="l00603"></a>00603     <span class="keywordtype">int</span> inJump, outJump;

  290. <a name="l00604"></a>00604     <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> inFormat, outFormat;

  291. <a name="l00605"></a>00605     std::vector&lt;int&gt; inOffset;

  292. <a name="l00606"></a>00606     std::vector&lt;int&gt; outOffset;

  293. <a name="l00607"></a>00607   };

  294. <a name="l00608"></a>00608 

  295. <a name="l00609"></a>00609   <span class="comment">// A protected structure for audio streams.</span>

  296. <a name="l00610"></a>00610   <span class="keyword">struct </span>RtApiStream {

  297. <a name="l00611"></a>00611     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device[2];    <span class="comment">// Playback and record, respectively.</span>

  298. <a name="l00612"></a>00612     <span class="keywordtype">void</span> *apiHandle;           <span class="comment">// void pointer for API specific stream handle information</span>

  299. <a name="l00613"></a>00613     StreamMode mode;           <span class="comment">// OUTPUT, INPUT, or DUPLEX.</span>

  300. <a name="l00614"></a>00614     StreamState state;         <span class="comment">// STOPPED, RUNNING, or CLOSED</span>

  301. <a name="l00615"></a>00615     <span class="keywordtype">char</span> *userBuffer[2];       <span class="comment">// Playback and record, respectively.</span>

  302. <a name="l00616"></a>00616     <span class="keywordtype">char</span> *deviceBuffer;

  303. <a name="l00617"></a>00617     <span class="keywordtype">bool</span> doConvertBuffer[2];   <span class="comment">// Playback and record, respectively.</span>

  304. <a name="l00618"></a>00618     <span class="keywordtype">bool</span> userInterleaved;

  305. <a name="l00619"></a>00619     <span class="keywordtype">bool</span> deviceInterleaved[2]; <span class="comment">// Playback and record, respectively.</span>

  306. <a name="l00620"></a>00620     <span class="keywordtype">bool</span> doByteSwap[2];        <span class="comment">// Playback and record, respectively.</span>

  307. <a name="l00621"></a>00621     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate;

  308. <a name="l00622"></a>00622     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bufferSize;

  309. <a name="l00623"></a>00623     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nBuffers;

  310. <a name="l00624"></a>00624     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nUserChannels[2];    <span class="comment">// Playback and record, respectively.</span>

  311. <a name="l00625"></a>00625     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> nDeviceChannels[2];  <span class="comment">// Playback and record channels, respectively.</span>

  312. <a name="l00626"></a>00626     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channelOffset[2];    <span class="comment">// Playback and record, respectively.</span>

  313. <a name="l00627"></a>00627     <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> latency[2];         <span class="comment">// Playback and record, respectively.</span>

  314. <a name="l00628"></a>00628     <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> userFormat;

  315. <a name="l00629"></a>00629     <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> deviceFormat[2];    <span class="comment">// Playback and record, respectively.</span>

  316. <a name="l00630"></a>00630     StreamMutex mutex;

  317. <a name="l00631"></a>00631     CallbackInfo callbackInfo;

  318. <a name="l00632"></a>00632     ConvertInfo convertInfo[2];

  319. <a name="l00633"></a>00633     <span class="keywordtype">double</span> streamTime;         <span class="comment">// Number of elapsed seconds since the stream started.</span>

  320. <a name="l00634"></a>00634 

  321. <a name="l00635"></a>00635 <span class="preprocessor">#if defined(HAVE_GETTIMEOFDAY)</span>

  322. <a name="l00636"></a>00636 <span class="preprocessor"></span>    <span class="keyword">struct </span>timeval lastTickTimestamp;

  323. <a name="l00637"></a>00637 <span class="preprocessor">#endif</span>

  324. <a name="l00638"></a>00638 <span class="preprocessor"></span>

  325. <a name="l00639"></a>00639     RtApiStream()

  326. <a name="l00640"></a>00640       :apiHandle(0), deviceBuffer(0) { device[0] = 11111; device[1] = 11111; }

  327. <a name="l00641"></a>00641   };

  328. <a name="l00642"></a>00642 

  329. <a name="l00643"></a>00643   <span class="keyword">typedef</span> <span class="keywordtype">signed</span> <span class="keywordtype">short</span> Int16;

  330. <a name="l00644"></a>00644   <span class="keyword">typedef</span> <span class="keywordtype">signed</span> <span class="keywordtype">int</span> Int32;

  331. <a name="l00645"></a>00645   <span class="keyword">typedef</span> <span class="keywordtype">float</span> Float32;

  332. <a name="l00646"></a>00646   <span class="keyword">typedef</span> <span class="keywordtype">double</span> Float64;

  333. <a name="l00647"></a>00647 

  334. <a name="l00648"></a>00648   std::ostringstream errorStream_;

  335. <a name="l00649"></a>00649   std::string errorText_;

  336. <a name="l00650"></a>00650   <span class="keywordtype">bool</span> showWarnings_;

  337. <a name="l00651"></a>00651   RtApiStream stream_;

  338. <a name="l00652"></a>00652 

  339. <a name="l00660"></a>00660   <span class="keyword">virtual</span> <span class="keywordtype">bool</span> probeDeviceOpen( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device, StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channels, 

  340. <a name="l00661"></a>00661                                 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  341. <a name="l00662"></a>00662                                 <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferSize,

  342. <a name="l00663"></a>00663                                 <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options );

  343. <a name="l00664"></a>00664 

  344. <a name="l00666"></a>00666   <span class="keywordtype">void</span> tickStreamTime( <span class="keywordtype">void</span> );

  345. <a name="l00667"></a>00667 

  346. <a name="l00669"></a>00669   <span class="keywordtype">void</span> clearStreamInfo();

  347. <a name="l00670"></a>00670 

  348. <a name="l00675"></a>00675   <span class="keywordtype">void</span> verifyStream( <span class="keywordtype">void</span> );

  349. <a name="l00676"></a>00676 

  350. <a name="l00678"></a>00678   <span class="keywordtype">void</span> error( <a class="code" href="classRtError.html#b04667aae01bffc354a9ac6bda6903ac" title="Defined RtError types.">RtError::Type</a> type );

  351. <a name="l00679"></a>00679 

  352. <a name="l00684"></a>00684   <span class="keywordtype">void</span> convertBuffer( <span class="keywordtype">char</span> *outBuffer, <span class="keywordtype">char</span> *inBuffer, ConvertInfo &amp;info );

  353. <a name="l00685"></a>00685 

  354. <a name="l00687"></a>00687   <span class="keywordtype">void</span> byteSwapBuffer( <span class="keywordtype">char</span> *buffer, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> samples, <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format );

  355. <a name="l00688"></a>00688 

  356. <a name="l00690"></a>00690   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> formatBytes( <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format );

  357. <a name="l00691"></a>00691 

  358. <a name="l00693"></a>00693   <span class="keywordtype">void</span> setConvertInfo( StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel );

  359. <a name="l00694"></a>00694 };

  360. <a name="l00695"></a>00695 

  361. <a name="l00696"></a>00696 <span class="comment">// **************************************************************** //</span>

  362. <a name="l00697"></a>00697 <span class="comment">//</span>

  363. <a name="l00698"></a>00698 <span class="comment">// Inline RtAudio definitions.</span>

  364. <a name="l00699"></a>00699 <span class="comment">//</span>

  365. <a name="l00700"></a>00700 <span class="comment">// **************************************************************** //</span>

  366. <a name="l00701"></a>00701 

  367. <a name="l00702"></a><a class="code" href="classRtAudio.html#83687634795792b2c47e4ae1cf8a5246">00702</a> <span class="keyword">inline</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> <a class="code" href="classRtAudio.html#83687634795792b2c47e4ae1cf8a5246" title="Returns the audio API specifier for the current instance of RtAudio.">RtAudio :: getCurrentApi</a>( <span class="keywordtype">void</span> ) throw() { <span class="keywordflow">return</span> rtapi_-&gt;getCurrentApi(); }

  368. <a name="l00703"></a><a class="code" href="classRtAudio.html#747ce2d73803641bbb66d6e78092aa1a">00703</a> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#747ce2d73803641bbb66d6e78092aa1a" title="A public function that queries for the number of audio devices available.">RtAudio :: getDeviceCount</a>( <span class="keywordtype">void</span> ) throw() { <span class="keywordflow">return</span> rtapi_-&gt;getDeviceCount(); }

  369. <a name="l00704"></a><a class="code" href="classRtAudio.html#02d7ff44ad1d7eae22283a052f3dfda8">00704</a> <span class="keyword">inline</span> <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> <a class="code" href="classRtAudio.html#02d7ff44ad1d7eae22283a052f3dfda8" title="Return an RtAudio::DeviceInfo structure for a specified device number.">RtAudio :: getDeviceInfo</a>( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device ) { <span class="keywordflow">return</span> rtapi_-&gt;getDeviceInfo( device ); }

  370. <a name="l00705"></a><a class="code" href="classRtAudio.html#ad8b94edd3cd379ee300b125750ac6ce">00705</a> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#ad8b94edd3cd379ee300b125750ac6ce" title="A function that returns the index of the default input device.">RtAudio :: getDefaultInputDevice</a>( <span class="keywordtype">void</span> ) throw() { <span class="keywordflow">return</span> rtapi_-&gt;getDefaultInputDevice(); }

  371. <a name="l00706"></a><a class="code" href="classRtAudio.html#3a3f3dbe13ea696b521e49cdaaa357bc">00706</a> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#3a3f3dbe13ea696b521e49cdaaa357bc" title="A function that returns the index of the default output device.">RtAudio :: getDefaultOutputDevice</a>( <span class="keywordtype">void</span> ) throw() { <span class="keywordflow">return</span> rtapi_-&gt;getDefaultOutputDevice(); }

  372. <a name="l00707"></a><a class="code" href="classRtAudio.html#90d599002ad32cf250a4cb866f2cc93a">00707</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#90d599002ad32cf250a4cb866f2cc93a" title="A function that closes a stream and frees any associated stream memory.">RtAudio :: closeStream</a>( <span class="keywordtype">void</span> ) throw() { <span class="keywordflow">return</span> rtapi_-&gt;closeStream(); }

  373. <a name="l00708"></a><a class="code" href="classRtAudio.html#ec017a89629ccef66a90b60be22a2f80">00708</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#ec017a89629ccef66a90b60be22a2f80" title="A function that starts a stream.">RtAudio :: startStream</a>( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> rtapi_-&gt;startStream(); }

  374. <a name="l00709"></a><a class="code" href="classRtAudio.html#f4c241ff86936ecc8108f0d9dfe3efdd">00709</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#f4c241ff86936ecc8108f0d9dfe3efdd" title="Stop a stream, allowing any samples remaining in the output queue to be played.">RtAudio :: stopStream</a>( <span class="keywordtype">void</span> )  { <span class="keywordflow">return</span> rtapi_-&gt;stopStream(); }

  375. <a name="l00710"></a><a class="code" href="classRtAudio.html#d0586b47cd6bb9591a80b4052815991f">00710</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#d0586b47cd6bb9591a80b4052815991f" title="Stop a stream, discarding any samples remaining in the input/output queue.">RtAudio :: abortStream</a>( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> rtapi_-&gt;abortStream(); }

  376. <a name="l00711"></a><a class="code" href="classRtAudio.html#3863e45ff81dbe97176de0ee7545917f">00711</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classRtAudio.html#3863e45ff81dbe97176de0ee7545917f" title="Returns true if a stream is open and false if not.">RtAudio :: isStreamOpen</a>( <span class="keywordtype">void</span> ) <span class="keyword">const</span> throw() { <span class="keywordflow">return</span> rtapi_-&gt;isStreamOpen(); }

  377. <a name="l00712"></a><a class="code" href="classRtAudio.html#84cc8d9b7ab9bc5f37bcf48430ec5aea">00712</a> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code" href="classRtAudio.html#84cc8d9b7ab9bc5f37bcf48430ec5aea" title="Returns true if the stream is running and false if it is stopped or not open.">RtAudio :: isStreamRunning</a>( <span class="keywordtype">void</span> ) <span class="keyword">const</span> throw() { <span class="keywordflow">return</span> rtapi_-&gt;isStreamRunning(); }

  378. <a name="l00713"></a><a class="code" href="classRtAudio.html#843c989d9f501c71bc2f2c5ca18df9f3">00713</a> <span class="keyword">inline</span> <span class="keywordtype">long</span> <a class="code" href="classRtAudio.html#843c989d9f501c71bc2f2c5ca18df9f3" title="Returns the internal stream latency in sample frames.">RtAudio :: getStreamLatency</a>( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> rtapi_-&gt;getStreamLatency(); }

  379. <a name="l00714"></a><a class="code" href="classRtAudio.html#28214b8b05d60b45c24ee6fae7b2a0b5">00714</a> <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classRtAudio.html#28214b8b05d60b45c24ee6fae7b2a0b5" title="Returns actual sample rate in use by the stream.">RtAudio :: getStreamSampleRate</a>( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> rtapi_-&gt;getStreamSampleRate(); };

  380. <a name="l00715"></a><a class="code" href="classRtAudio.html#344e59a62353c5791db4621b985cb2ca">00715</a> <span class="keyword">inline</span> <span class="keywordtype">double</span> <a class="code" href="classRtAudio.html#344e59a62353c5791db4621b985cb2ca" title="Returns the number of elapsed seconds since the stream was started.">RtAudio :: getStreamTime</a>( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> rtapi_-&gt;getStreamTime(); }

  381. <a name="l00716"></a><a class="code" href="classRtAudio.html#f0752ee51cce3dd90a3bd009f9fdbe77">00716</a> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classRtAudio.html#f0752ee51cce3dd90a3bd009f9fdbe77" title="Specify whether warning messages should be printed to stderr.">RtAudio :: showWarnings</a>( <span class="keywordtype">bool</span> value ) <span class="keywordflow">throw</span>() { rtapi_-&gt;showWarnings( value ); }

  382. <a name="l00717"></a>00717 

  383. <a name="l00718"></a>00718 <span class="comment">// RtApi Subclass prototypes.</span>

  384. <a name="l00719"></a>00719 

  385. <a name="l00720"></a>00720 <span class="preprocessor">#if defined(__MACOSX_CORE__)</span>

  386. <a name="l00721"></a>00721 <span class="preprocessor"></span>

  387. <a name="l00722"></a>00722 <span class="preprocessor">#include &lt;CoreAudio/AudioHardware.h&gt;</span>

  388. <a name="l00723"></a>00723 

  389. <a name="l00724"></a>00724 <span class="keyword">class </span>RtApiCore: <span class="keyword">public</span> RtApi

  390. <a name="l00725"></a>00725 {

  391. <a name="l00726"></a>00726 <span class="keyword">public</span>:

  392. <a name="l00727"></a>00727 

  393. <a name="l00728"></a>00728   RtApiCore();

  394. <a name="l00729"></a>00729   ~RtApiCore();

  395. <a name="l00730"></a>00730   <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> getCurrentApi( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d8499fec92b8272244a87a6a11a717bd662d">RtAudio::MACOSX_CORE</a>; };

  396. <a name="l00731"></a>00731   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDeviceCount( <span class="keywordtype">void</span> );

  397. <a name="l00732"></a>00732   <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> getDeviceInfo( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device );

  398. <a name="l00733"></a>00733   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDefaultOutputDevice( <span class="keywordtype">void</span> );

  399. <a name="l00734"></a>00734   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDefaultInputDevice( <span class="keywordtype">void</span> );

  400. <a name="l00735"></a>00735   <span class="keywordtype">void</span> closeStream( <span class="keywordtype">void</span> );

  401. <a name="l00736"></a>00736   <span class="keywordtype">void</span> startStream( <span class="keywordtype">void</span> );

  402. <a name="l00737"></a>00737   <span class="keywordtype">void</span> stopStream( <span class="keywordtype">void</span> );

  403. <a name="l00738"></a>00738   <span class="keywordtype">void</span> abortStream( <span class="keywordtype">void</span> );

  404. <a name="l00739"></a>00739   <span class="keywordtype">long</span> getStreamLatency( <span class="keywordtype">void</span> );

  405. <a name="l00740"></a>00740 

  406. <a name="l00741"></a>00741   <span class="comment">// This function is intended for internal use only.  It must be</span>

  407. <a name="l00742"></a>00742   <span class="comment">// public because it is called by the internal callback handler,</span>

  408. <a name="l00743"></a>00743   <span class="comment">// which is not a member of RtAudio.  External use of this function</span>

  409. <a name="l00744"></a>00744   <span class="comment">// will most likely produce highly undesireable results!</span>

  410. <a name="l00745"></a>00745   <span class="keywordtype">bool</span> callbackEvent( AudioDeviceID deviceId,

  411. <a name="l00746"></a>00746                       <span class="keyword">const</span> AudioBufferList *inBufferList,

  412. <a name="l00747"></a>00747                       <span class="keyword">const</span> AudioBufferList *outBufferList );

  413. <a name="l00748"></a>00748 

  414. <a name="l00749"></a>00749   <span class="keyword">private</span>:

  415. <a name="l00750"></a>00750 

  416. <a name="l00751"></a>00751   <span class="keywordtype">bool</span> probeDeviceOpen( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device, StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channels, 

  417. <a name="l00752"></a>00752                         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  418. <a name="l00753"></a>00753                         <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferSize,

  419. <a name="l00754"></a>00754                         <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options );

  420. <a name="l00755"></a>00755   <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* getErrorCode( OSStatus code );

  421. <a name="l00756"></a>00756 };

  422. <a name="l00757"></a>00757 

  423. <a name="l00758"></a>00758 <span class="preprocessor">#endif</span>

  424. <a name="l00759"></a>00759 <span class="preprocessor"></span>

  425. <a name="l00760"></a>00760 <span class="preprocessor">#if defined(__UNIX_JACK__)</span>

  426. <a name="l00761"></a>00761 <span class="preprocessor"></span>

  427. <a name="l00762"></a>00762 <span class="keyword">class </span>RtApiJack: <span class="keyword">public</span> RtApi

  428. <a name="l00763"></a>00763 {

  429. <a name="l00764"></a>00764 <span class="keyword">public</span>:

  430. <a name="l00765"></a>00765 

  431. <a name="l00766"></a>00766   RtApiJack();

  432. <a name="l00767"></a>00767   ~RtApiJack();

  433. <a name="l00768"></a>00768   <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> getCurrentApi( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d8494767e17c6edfbd827f91763915df4105">RtAudio::UNIX_JACK</a>; };

  434. <a name="l00769"></a>00769   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDeviceCount( <span class="keywordtype">void</span> );

  435. <a name="l00770"></a>00770   <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> getDeviceInfo( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device );

  436. <a name="l00771"></a>00771   <span class="keywordtype">void</span> closeStream( <span class="keywordtype">void</span> );

  437. <a name="l00772"></a>00772   <span class="keywordtype">void</span> startStream( <span class="keywordtype">void</span> );

  438. <a name="l00773"></a>00773   <span class="keywordtype">void</span> stopStream( <span class="keywordtype">void</span> );

  439. <a name="l00774"></a>00774   <span class="keywordtype">void</span> abortStream( <span class="keywordtype">void</span> );

  440. <a name="l00775"></a>00775   <span class="keywordtype">long</span> getStreamLatency( <span class="keywordtype">void</span> );

  441. <a name="l00776"></a>00776 

  442. <a name="l00777"></a>00777   <span class="comment">// This function is intended for internal use only.  It must be</span>

  443. <a name="l00778"></a>00778   <span class="comment">// public because it is called by the internal callback handler,</span>

  444. <a name="l00779"></a>00779   <span class="comment">// which is not a member of RtAudio.  External use of this function</span>

  445. <a name="l00780"></a>00780   <span class="comment">// will most likely produce highly undesireable results!</span>

  446. <a name="l00781"></a>00781   <span class="keywordtype">bool</span> callbackEvent( <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> nframes );

  447. <a name="l00782"></a>00782 

  448. <a name="l00783"></a>00783   <span class="keyword">private</span>:

  449. <a name="l00784"></a>00784 

  450. <a name="l00785"></a>00785   <span class="keywordtype">bool</span> probeDeviceOpen( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device, StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channels, 

  451. <a name="l00786"></a>00786                         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  452. <a name="l00787"></a>00787                         <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferSize,

  453. <a name="l00788"></a>00788                         <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options );

  454. <a name="l00789"></a>00789 };

  455. <a name="l00790"></a>00790 

  456. <a name="l00791"></a>00791 <span class="preprocessor">#endif</span>

  457. <a name="l00792"></a>00792 <span class="preprocessor"></span>

  458. <a name="l00793"></a>00793 <span class="preprocessor">#if defined(__WINDOWS_ASIO__)</span>

  459. <a name="l00794"></a>00794 <span class="preprocessor"></span>

  460. <a name="l00795"></a>00795 <span class="keyword">class </span>RtApiAsio: <span class="keyword">public</span> RtApi

  461. <a name="l00796"></a>00796 {

  462. <a name="l00797"></a>00797 <span class="keyword">public</span>:

  463. <a name="l00798"></a>00798 

  464. <a name="l00799"></a>00799   RtApiAsio();

  465. <a name="l00800"></a>00800   ~RtApiAsio();

  466. <a name="l00801"></a>00801   <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> getCurrentApi( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849219517d1df90f94d07758481155bd469">RtAudio::WINDOWS_ASIO</a>; };

  467. <a name="l00802"></a>00802   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDeviceCount( <span class="keywordtype">void</span> );

  468. <a name="l00803"></a>00803   <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> getDeviceInfo( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device );

  469. <a name="l00804"></a>00804   <span class="keywordtype">void</span> closeStream( <span class="keywordtype">void</span> );

  470. <a name="l00805"></a>00805   <span class="keywordtype">void</span> startStream( <span class="keywordtype">void</span> );

  471. <a name="l00806"></a>00806   <span class="keywordtype">void</span> stopStream( <span class="keywordtype">void</span> );

  472. <a name="l00807"></a>00807   <span class="keywordtype">void</span> abortStream( <span class="keywordtype">void</span> );

  473. <a name="l00808"></a>00808   <span class="keywordtype">long</span> getStreamLatency( <span class="keywordtype">void</span> );

  474. <a name="l00809"></a>00809 

  475. <a name="l00810"></a>00810   <span class="comment">// This function is intended for internal use only.  It must be</span>

  476. <a name="l00811"></a>00811   <span class="comment">// public because it is called by the internal callback handler,</span>

  477. <a name="l00812"></a>00812   <span class="comment">// which is not a member of RtAudio.  External use of this function</span>

  478. <a name="l00813"></a>00813   <span class="comment">// will most likely produce highly undesireable results!</span>

  479. <a name="l00814"></a>00814   <span class="keywordtype">bool</span> callbackEvent( <span class="keywordtype">long</span> bufferIndex );

  480. <a name="l00815"></a>00815 

  481. <a name="l00816"></a>00816   <span class="keyword">private</span>:

  482. <a name="l00817"></a>00817 

  483. <a name="l00818"></a>00818   std::vector&lt;RtAudio::DeviceInfo&gt; devices_;

  484. <a name="l00819"></a>00819   <span class="keywordtype">void</span> saveDeviceInfo( <span class="keywordtype">void</span> );

  485. <a name="l00820"></a>00820   <span class="keywordtype">bool</span> coInitialized_;

  486. <a name="l00821"></a>00821   <span class="keywordtype">bool</span> probeDeviceOpen( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device, StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channels, 

  487. <a name="l00822"></a>00822                         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  488. <a name="l00823"></a>00823                         <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferSize,

  489. <a name="l00824"></a>00824                         <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options );

  490. <a name="l00825"></a>00825 };

  491. <a name="l00826"></a>00826 

  492. <a name="l00827"></a>00827 <span class="preprocessor">#endif</span>

  493. <a name="l00828"></a>00828 <span class="preprocessor"></span>

  494. <a name="l00829"></a>00829 <span class="preprocessor">#if defined(__WINDOWS_DS__)</span>

  495. <a name="l00830"></a>00830 <span class="preprocessor"></span>

  496. <a name="l00831"></a>00831 <span class="keyword">class </span>RtApiDs: <span class="keyword">public</span> RtApi

  497. <a name="l00832"></a>00832 {

  498. <a name="l00833"></a>00833 <span class="keyword">public</span>:

  499. <a name="l00834"></a>00834 

  500. <a name="l00835"></a>00835   RtApiDs();

  501. <a name="l00836"></a>00836   ~RtApiDs();

  502. <a name="l00837"></a>00837   <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> getCurrentApi( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d84928478830f42c2fd61e6c7ad498901931">RtAudio::WINDOWS_DS</a>; };

  503. <a name="l00838"></a>00838   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDeviceCount( <span class="keywordtype">void</span> );

  504. <a name="l00839"></a>00839   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDefaultOutputDevice( <span class="keywordtype">void</span> );

  505. <a name="l00840"></a>00840   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDefaultInputDevice( <span class="keywordtype">void</span> );

  506. <a name="l00841"></a>00841   <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> getDeviceInfo( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device );

  507. <a name="l00842"></a>00842   <span class="keywordtype">void</span> closeStream( <span class="keywordtype">void</span> );

  508. <a name="l00843"></a>00843   <span class="keywordtype">void</span> startStream( <span class="keywordtype">void</span> );

  509. <a name="l00844"></a>00844   <span class="keywordtype">void</span> stopStream( <span class="keywordtype">void</span> );

  510. <a name="l00845"></a>00845   <span class="keywordtype">void</span> abortStream( <span class="keywordtype">void</span> );

  511. <a name="l00846"></a>00846   <span class="keywordtype">long</span> getStreamLatency( <span class="keywordtype">void</span> );

  512. <a name="l00847"></a>00847 

  513. <a name="l00848"></a>00848   <span class="comment">// This function is intended for internal use only.  It must be</span>

  514. <a name="l00849"></a>00849   <span class="comment">// public because it is called by the internal callback handler,</span>

  515. <a name="l00850"></a>00850   <span class="comment">// which is not a member of RtAudio.  External use of this function</span>

  516. <a name="l00851"></a>00851   <span class="comment">// will most likely produce highly undesireable results!</span>

  517. <a name="l00852"></a>00852   <span class="keywordtype">void</span> callbackEvent( <span class="keywordtype">void</span> );

  518. <a name="l00853"></a>00853 

  519. <a name="l00854"></a>00854   <span class="keyword">private</span>:

  520. <a name="l00855"></a>00855 

  521. <a name="l00856"></a>00856   <span class="keywordtype">bool</span> coInitialized_;

  522. <a name="l00857"></a>00857   <span class="keywordtype">bool</span> buffersRolling;

  523. <a name="l00858"></a>00858   <span class="keywordtype">long</span> duplexPrerollBytes;

  524. <a name="l00859"></a>00859   <span class="keywordtype">bool</span> probeDeviceOpen( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device, StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channels, 

  525. <a name="l00860"></a>00860                         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  526. <a name="l00861"></a>00861                         <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferSize,

  527. <a name="l00862"></a>00862                         <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options );

  528. <a name="l00863"></a>00863 };

  529. <a name="l00864"></a>00864 

  530. <a name="l00865"></a>00865 <span class="preprocessor">#endif</span>

  531. <a name="l00866"></a>00866 <span class="preprocessor"></span>

  532. <a name="l00867"></a>00867 <span class="preprocessor">#if defined(__LINUX_ALSA__)</span>

  533. <a name="l00868"></a>00868 <span class="preprocessor"></span>

  534. <a name="l00869"></a>00869 <span class="keyword">class </span>RtApiAlsa: <span class="keyword">public</span> RtApi

  535. <a name="l00870"></a>00870 {

  536. <a name="l00871"></a>00871 <span class="keyword">public</span>:

  537. <a name="l00872"></a>00872 

  538. <a name="l00873"></a>00873   RtApiAlsa();

  539. <a name="l00874"></a>00874   ~RtApiAlsa();

  540. <a name="l00875"></a>00875   <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> getCurrentApi() { <span class="keywordflow">return</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849a7a2ba095c2806caa893b6fb8fc3a1a8">RtAudio::LINUX_ALSA</a>; };

  541. <a name="l00876"></a>00876   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDeviceCount( <span class="keywordtype">void</span> );

  542. <a name="l00877"></a>00877   <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> getDeviceInfo( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device );

  543. <a name="l00878"></a>00878   <span class="keywordtype">void</span> closeStream( <span class="keywordtype">void</span> );

  544. <a name="l00879"></a>00879   <span class="keywordtype">void</span> startStream( <span class="keywordtype">void</span> );

  545. <a name="l00880"></a>00880   <span class="keywordtype">void</span> stopStream( <span class="keywordtype">void</span> );

  546. <a name="l00881"></a>00881   <span class="keywordtype">void</span> abortStream( <span class="keywordtype">void</span> );

  547. <a name="l00882"></a>00882 

  548. <a name="l00883"></a>00883   <span class="comment">// This function is intended for internal use only.  It must be</span>

  549. <a name="l00884"></a>00884   <span class="comment">// public because it is called by the internal callback handler,</span>

  550. <a name="l00885"></a>00885   <span class="comment">// which is not a member of RtAudio.  External use of this function</span>

  551. <a name="l00886"></a>00886   <span class="comment">// will most likely produce highly undesireable results!</span>

  552. <a name="l00887"></a>00887   <span class="keywordtype">void</span> callbackEvent( <span class="keywordtype">void</span> );

  553. <a name="l00888"></a>00888 

  554. <a name="l00889"></a>00889   <span class="keyword">private</span>:

  555. <a name="l00890"></a>00890 

  556. <a name="l00891"></a>00891   std::vector&lt;RtAudio::DeviceInfo&gt; devices_;

  557. <a name="l00892"></a>00892   <span class="keywordtype">void</span> saveDeviceInfo( <span class="keywordtype">void</span> );

  558. <a name="l00893"></a>00893   <span class="keywordtype">bool</span> probeDeviceOpen( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device, StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channels, 

  559. <a name="l00894"></a>00894                         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  560. <a name="l00895"></a>00895                         <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferSize,

  561. <a name="l00896"></a>00896                         <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options );

  562. <a name="l00897"></a>00897 };

  563. <a name="l00898"></a>00898 

  564. <a name="l00899"></a>00899 <span class="preprocessor">#endif</span>

  565. <a name="l00900"></a>00900 <span class="preprocessor"></span>

  566. <a name="l00901"></a>00901 <span class="preprocessor">#if defined(__LINUX_OSS__)</span>

  567. <a name="l00902"></a>00902 <span class="preprocessor"></span>

  568. <a name="l00903"></a>00903 <span class="keyword">class </span>RtApiOss: <span class="keyword">public</span> RtApi

  569. <a name="l00904"></a>00904 {

  570. <a name="l00905"></a>00905 <span class="keyword">public</span>:

  571. <a name="l00906"></a>00906 

  572. <a name="l00907"></a>00907   RtApiOss();

  573. <a name="l00908"></a>00908   ~RtApiOss();

  574. <a name="l00909"></a>00909   <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> getCurrentApi() { <span class="keywordflow">return</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d84939c84615e61de75e6a4e865596d62c82">RtAudio::LINUX_OSS</a>; };

  575. <a name="l00910"></a>00910   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDeviceCount( <span class="keywordtype">void</span> );

  576. <a name="l00911"></a>00911   <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> getDeviceInfo( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device );

  577. <a name="l00912"></a>00912   <span class="keywordtype">void</span> closeStream( <span class="keywordtype">void</span> );

  578. <a name="l00913"></a>00913   <span class="keywordtype">void</span> startStream( <span class="keywordtype">void</span> );

  579. <a name="l00914"></a>00914   <span class="keywordtype">void</span> stopStream( <span class="keywordtype">void</span> );

  580. <a name="l00915"></a>00915   <span class="keywordtype">void</span> abortStream( <span class="keywordtype">void</span> );

  581. <a name="l00916"></a>00916 

  582. <a name="l00917"></a>00917   <span class="comment">// This function is intended for internal use only.  It must be</span>

  583. <a name="l00918"></a>00918   <span class="comment">// public because it is called by the internal callback handler,</span>

  584. <a name="l00919"></a>00919   <span class="comment">// which is not a member of RtAudio.  External use of this function</span>

  585. <a name="l00920"></a>00920   <span class="comment">// will most likely produce highly undesireable results!</span>

  586. <a name="l00921"></a>00921   <span class="keywordtype">void</span> callbackEvent( <span class="keywordtype">void</span> );

  587. <a name="l00922"></a>00922 

  588. <a name="l00923"></a>00923   <span class="keyword">private</span>:

  589. <a name="l00924"></a>00924 

  590. <a name="l00925"></a>00925   <span class="keywordtype">bool</span> probeDeviceOpen( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device, StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channels, 

  591. <a name="l00926"></a>00926                         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  592. <a name="l00927"></a>00927                         <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferSize,

  593. <a name="l00928"></a>00928                         <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options );

  594. <a name="l00929"></a>00929 };

  595. <a name="l00930"></a>00930 

  596. <a name="l00931"></a>00931 <span class="preprocessor">#endif</span>

  597. <a name="l00932"></a>00932 <span class="preprocessor"></span>

  598. <a name="l00933"></a>00933 <span class="preprocessor">#if defined(__RTAUDIO_DUMMY__)</span>

  599. <a name="l00934"></a>00934 <span class="preprocessor"></span>

  600. <a name="l00935"></a>00935 <span class="keyword">class </span>RtApiDummy: <span class="keyword">public</span> RtApi

  601. <a name="l00936"></a>00936 {

  602. <a name="l00937"></a>00937 <span class="keyword">public</span>:

  603. <a name="l00938"></a>00938 

  604. <a name="l00939"></a>00939   RtApiDummy() { errorText_ = <span class="stringliteral">"RtApiDummy: This class provides no functionality."</span>; error( <a class="code" href="classRtError.html#b04667aae01bffc354a9ac6bda6903ac3a1603c24a56cbdaf5f8ae4ddcb86398">RtError::WARNING</a> ); };

  605. <a name="l00940"></a>00940   <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849" title="Audio API specifier arguments.">RtAudio::Api</a> getCurrentApi( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> <a class="code" href="classRtAudio.html#c9b6f625da88249d08a8409a9db0d849b06b8fd88bf18c9a2b8271f6961ae2d1">RtAudio::RTAUDIO_DUMMY</a>; };

  606. <a name="l00941"></a>00941   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> getDeviceCount( <span class="keywordtype">void</span> ) { <span class="keywordflow">return</span> 0; };

  607. <a name="l00942"></a>00942   <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> getDeviceInfo( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device ) { <a class="code" href="structRtAudio_1_1DeviceInfo.html" title="The public device information structure for returning queried values.">RtAudio::DeviceInfo</a> info; <span class="keywordflow">return</span> info; };

  608. <a name="l00943"></a>00943   <span class="keywordtype">void</span> closeStream( <span class="keywordtype">void</span> ) {};

  609. <a name="l00944"></a>00944   <span class="keywordtype">void</span> startStream( <span class="keywordtype">void</span> ) {};

  610. <a name="l00945"></a>00945   <span class="keywordtype">void</span> stopStream( <span class="keywordtype">void</span> ) {};

  611. <a name="l00946"></a>00946   <span class="keywordtype">void</span> abortStream( <span class="keywordtype">void</span> ) {};

  612. <a name="l00947"></a>00947 

  613. <a name="l00948"></a>00948   <span class="keyword">private</span>:

  614. <a name="l00949"></a>00949 

  615. <a name="l00950"></a>00950   <span class="keywordtype">bool</span> probeDeviceOpen( <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> device, StreamMode mode, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> channels, 

  616. <a name="l00951"></a>00951                         <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> firstChannel, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> sampleRate,

  617. <a name="l00952"></a>00952                         <a class="code" href="RtAudio_8h.html#afca92882d25915560018873221e44b8" title="RtAudio data format type.">RtAudioFormat</a> format, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *bufferSize,

  618. <a name="l00953"></a>00953                         <a class="code" href="structRtAudio_1_1StreamOptions.html" title="The structure for specifying stream options.">RtAudio::StreamOptions</a> *options ) { <span class="keywordflow">return</span> <span class="keyword">false</span>; };

  619. <a name="l00954"></a>00954 };

  620. <a name="l00955"></a>00955 

  621. <a name="l00956"></a>00956 <span class="preprocessor">#endif</span>

  622. <a name="l00957"></a>00957 <span class="preprocessor"></span>

  623. <a name="l00958"></a>00958 <span class="preprocessor">#endif</span>

  624. <a name="l00959"></a>00959 <span class="preprocessor"></span>

  625. <a name="l00960"></a>00960 <span class="comment">// Indentation settings for Vim and Emacs</span>

  626. <a name="l00961"></a>00961 <span class="comment">//</span>

  627. <a name="l00962"></a>00962 <span class="comment">// Local Variables:</span>

  628. <a name="l00963"></a>00963 <span class="comment">// c-basic-offset: 2</span>

  629. <a name="l00964"></a>00964 <span class="comment">// indent-tabs-mode: nil</span>

  630. <a name="l00965"></a>00965 <span class="comment">// End:</span>

  631. <a name="l00966"></a>00966 <span class="comment">//</span>

  632. <a name="l00967"></a>00967 <span class="comment">// vim: et sts=2 sw=2</span>

  633. </pre></div></div>

  634. <HR>

  635. 

  636. <table><tr><td><img src="../images/mcgill.gif" width=165></td>

  637.   <td>&copy;2001-2009 Gary P. Scavone, McGill University. All Rights Reserved.<br>Maintained by <a href="http://www.music.mcgill.ca/~gary/">Gary P. Scavone</a>.</td></tr>

  638. </table>

  639. 

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