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<h1>AsyncAudioAmp.h</h1><a href="AsyncAudioAmp_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 
<a name="l00027"></a>00027 <span class="preprocessor">#ifndef ASYNC_AUDIO_AMP_INCLUDED</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#define ASYNC_AUDIO_AMP_INCLUDED</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span>
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <span class="comment">/****************************************************************************</span>
<a name="l00032"></a>00032 <span class="comment"> *</span>
<a name="l00033"></a>00033 <span class="comment"> * System Includes</span>
<a name="l00034"></a>00034 <span class="comment"> *</span>
<a name="l00035"></a>00035 <span class="comment"> ****************************************************************************/</span>
<a name="l00036"></a>00036 
<a name="l00037"></a>00037 <span class="preprocessor">#include &lt;cmath&gt;</span>
<a name="l00038"></a>00038 
<a name="l00039"></a>00039 
<a name="l00040"></a>00040 <span class="comment">/****************************************************************************</span>
<a name="l00041"></a>00041 <span class="comment"> *</span>
<a name="l00042"></a>00042 <span class="comment"> * Project Includes</span>
<a name="l00043"></a>00043 <span class="comment"> *</span>
<a name="l00044"></a>00044 <span class="comment"> ****************************************************************************/</span>
<a name="l00045"></a>00045 
<a name="l00046"></a>00046 <span class="preprocessor">#include &lt;<a class="code" href="AsyncAudioProcessor_8h.html" title="The base class for an audio processor class.">AsyncAudioProcessor.h</a>&gt;</span>
<a name="l00047"></a>00047 
<a name="l00048"></a>00048 
<a name="l00049"></a>00049 <span class="comment">/****************************************************************************</span>
<a name="l00050"></a>00050 <span class="comment"> *</span>
<a name="l00051"></a>00051 <span class="comment"> * Local Includes</span>
<a name="l00052"></a>00052 <span class="comment"> *</span>
<a name="l00053"></a>00053 <span class="comment"> ****************************************************************************/</span>
<a name="l00054"></a>00054 
<a name="l00055"></a>00055 
<a name="l00056"></a>00056 
<a name="l00057"></a>00057 <span class="comment">/****************************************************************************</span>
<a name="l00058"></a>00058 <span class="comment"> *</span>
<a name="l00059"></a>00059 <span class="comment"> * Forward declarations</span>
<a name="l00060"></a>00060 <span class="comment"> *</span>
<a name="l00061"></a>00061 <span class="comment"> ****************************************************************************/</span>
<a name="l00062"></a>00062 
<a name="l00063"></a>00063 
<a name="l00064"></a>00064 
<a name="l00065"></a>00065 <span class="comment">/****************************************************************************</span>
<a name="l00066"></a>00066 <span class="comment"> *</span>
<a name="l00067"></a>00067 <span class="comment"> * Namespace</span>
<a name="l00068"></a>00068 <span class="comment"> *</span>
<a name="l00069"></a>00069 <span class="comment"> ****************************************************************************/</span>
<a name="l00070"></a>00070 
<a name="l00071"></a>00071 <span class="keyword">namespace </span>Async
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 
<a name="l00074"></a>00074 
<a name="l00075"></a>00075 <span class="comment">/****************************************************************************</span>
<a name="l00076"></a>00076 <span class="comment"> *</span>
<a name="l00077"></a>00077 <span class="comment"> * Forward declarations of classes inside of the declared namespace</span>
<a name="l00078"></a>00078 <span class="comment"> *</span>
<a name="l00079"></a>00079 <span class="comment"> ****************************************************************************/</span>
<a name="l00080"></a>00080 
<a name="l00081"></a>00081   
<a name="l00082"></a>00082 
<a name="l00083"></a>00083 <span class="comment">/****************************************************************************</span>
<a name="l00084"></a>00084 <span class="comment"> *</span>
<a name="l00085"></a>00085 <span class="comment"> * Defines &amp; typedefs</span>
<a name="l00086"></a>00086 <span class="comment"> *</span>
<a name="l00087"></a>00087 <span class="comment"> ****************************************************************************/</span>
<a name="l00088"></a>00088 
<a name="l00089"></a>00089 
<a name="l00090"></a>00090 
<a name="l00091"></a>00091 <span class="comment">/****************************************************************************</span>
<a name="l00092"></a>00092 <span class="comment"> *</span>
<a name="l00093"></a>00093 <span class="comment"> * Exported Global Variables</span>
<a name="l00094"></a>00094 <span class="comment"> *</span>
<a name="l00095"></a>00095 <span class="comment"> ****************************************************************************/</span>
<a name="l00096"></a>00096 
<a name="l00097"></a>00097 
<a name="l00098"></a>00098 
<a name="l00099"></a>00099 <span class="comment">/****************************************************************************</span>
<a name="l00100"></a>00100 <span class="comment"> *</span>
<a name="l00101"></a>00101 <span class="comment"> * Class definitions</span>
<a name="l00102"></a>00102 <span class="comment"> *</span>
<a name="l00103"></a>00103 <span class="comment"> ****************************************************************************/</span>
<a name="l00104"></a>00104 
<a name="l00112"></a><a class="code" href="classAsync_1_1AudioAmp.html">00112</a> <span class="keyword">class </span><a class="code" href="classAsync_1_1AudioAmp.html" title="An audio pipe class for amplification/attenuation of an audio stream.">AudioAmp</a> : <span class="keyword">public</span> Async::<a class="code" href="classAsync_1_1AudioProcessor.html" title="The base class for an audio processor.">AudioProcessor</a>
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114   <span class="keyword">public</span>:
<a name="l00118"></a><a class="code" href="classAsync_1_1AudioAmp.html#a40781b4768738d84f786b183339ae43e">00118</a>     <a class="code" href="classAsync_1_1AudioAmp.html#a40781b4768738d84f786b183339ae43e" title="Default constuctor.">AudioAmp</a>(<span class="keywordtype">void</span>) : m_gain(1.0) {}
<a name="l00119"></a>00119   
<a name="l00123"></a><a class="code" href="classAsync_1_1AudioAmp.html#a7ed6ad83f1c4a67a9989cdc76eec4498">00123</a>     <a class="code" href="classAsync_1_1AudioAmp.html#a7ed6ad83f1c4a67a9989cdc76eec4498" title="Destructor.">~AudioAmp</a>(<span class="keywordtype">void</span>) {}
<a name="l00124"></a>00124   
<a name="l00129"></a><a class="code" href="classAsync_1_1AudioAmp.html#adab176975efc5e32c7ae25e8ce1309ca">00129</a>     <span class="keywordtype">void</span> <a class="code" href="classAsync_1_1AudioAmp.html#adab176975efc5e32c7ae25e8ce1309ca" title="Set the gain to use.">setGain</a>(<span class="keywordtype">float</span> gain_db) { m_gain = powf(10, gain_db / 20); }
<a name="l00130"></a>00130     
<a name="l00135"></a><a class="code" href="classAsync_1_1AudioAmp.html#af815357013b60721bdd683a5fc35cac7">00135</a>     <span class="keywordtype">float</span> <a class="code" href="classAsync_1_1AudioAmp.html#af815357013b60721bdd683a5fc35cac7" title="Read the gain.">gain</a>(<span class="keywordtype">void</span>)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> 20 * log10(m_gain); }
<a name="l00136"></a>00136     
<a name="l00137"></a>00137     
<a name="l00138"></a>00138   <span class="keyword">protected</span>:
<a name="l00139"></a><a class="code" href="classAsync_1_1AudioAmp.html#aa2a8e1111bd6b6c555e73fc2fa0561a4">00139</a>     <span class="keywordtype">void</span> <a class="code" href="classAsync_1_1AudioAmp.html#aa2a8e1111bd6b6c555e73fc2fa0561a4" title="Process incoming samples and put them into the output buffer.">processSamples</a>(<span class="keywordtype">float</span> *dest, <span class="keyword">const</span> <span class="keywordtype">float</span> *src, <span class="keywordtype">int</span> count)
<a name="l00140"></a>00140     {
<a name="l00141"></a>00141       <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i&lt;count; ++i)
<a name="l00142"></a>00142       {
<a name="l00143"></a>00143         dest[i] = src[i] * m_gain;
<a name="l00144"></a>00144       }
<a name="l00145"></a>00145     }
<a name="l00146"></a>00146     
<a name="l00147"></a>00147     
<a name="l00148"></a>00148   <span class="keyword">private</span>:
<a name="l00149"></a>00149     <a class="code" href="classAsync_1_1AudioAmp.html#a40781b4768738d84f786b183339ae43e" title="Default constuctor.">AudioAmp</a>(<span class="keyword">const</span> <a class="code" href="classAsync_1_1AudioAmp.html" title="An audio pipe class for amplification/attenuation of an audio stream.">AudioAmp</a>&amp;);
<a name="l00150"></a>00150     <a class="code" href="classAsync_1_1AudioAmp.html" title="An audio pipe class for amplification/attenuation of an audio stream.">AudioAmp</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="classAsync_1_1AudioAmp.html" title="An audio pipe class for amplification/attenuation of an audio stream.">AudioAmp</a>&amp;);
<a name="l00151"></a>00151     
<a name="l00152"></a>00152     <span class="keywordtype">float</span> m_gain;
<a name="l00153"></a>00153     
<a name="l00154"></a>00154 };  <span class="comment">/* class AudioAmp */</span>
<a name="l00155"></a>00155 
<a name="l00156"></a>00156 
<a name="l00157"></a>00157 } <span class="comment">/* namespace */</span>
<a name="l00158"></a>00158 
<a name="l00159"></a>00159 <span class="preprocessor">#endif </span><span class="comment">/* ASYNC_AUDIO_AMP_INCLUDED */</span>
<a name="l00160"></a>00160 
<a name="l00161"></a>00161 
<a name="l00162"></a>00162 
<a name="l00163"></a>00163 <span class="comment">/*</span>
<a name="l00164"></a>00164 <span class="comment"> * This file has not been truncated</span>
<a name="l00165"></a>00165 <span class="comment"> */</span>
<a name="l00166"></a>00166 
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