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<h1>AsyncAudioStreamStateDetector.h</h1><a href="AsyncAudioStreamStateDetector_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 
<a name="l00029"></a>00029 <span class="preprocessor">#ifndef ASYNC_AUDIO_STREAM_STATE_DETECTOR_INCLUDED</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define ASYNC_AUDIO_STREAM_STATE_DETECTOR_INCLUDED</span>
<a name="l00031"></a>00031 <span class="preprocessor"></span>
<a name="l00032"></a>00032 
<a name="l00033"></a>00033 <span class="comment">/****************************************************************************</span>
<a name="l00034"></a>00034 <span class="comment"> *</span>
<a name="l00035"></a>00035 <span class="comment"> * System Includes</span>
<a name="l00036"></a>00036 <span class="comment"> *</span>
<a name="l00037"></a>00037 <span class="comment"> ****************************************************************************/</span>
<a name="l00038"></a>00038 
<a name="l00039"></a>00039 <span class="preprocessor">#include &lt;sigc++/sigc++.h&gt;</span>
<a name="l00040"></a>00040 
<a name="l00041"></a>00041 
<a name="l00042"></a>00042 <span class="comment">/****************************************************************************</span>
<a name="l00043"></a>00043 <span class="comment"> *</span>
<a name="l00044"></a>00044 <span class="comment"> * Project Includes</span>
<a name="l00045"></a>00045 <span class="comment"> *</span>
<a name="l00046"></a>00046 <span class="comment"> ****************************************************************************/</span>
<a name="l00047"></a>00047 
<a name="l00048"></a>00048 <span class="preprocessor">#include &lt;<a class="code" href="AsyncAudioPassthrough_8h.html" title="This file contains a class that just pass the audio through.">AsyncAudioPassthrough.h</a>&gt;</span>
<a name="l00049"></a>00049 
<a name="l00050"></a>00050 
<a name="l00051"></a>00051 <span class="comment">/****************************************************************************</span>
<a name="l00052"></a>00052 <span class="comment"> *</span>
<a name="l00053"></a>00053 <span class="comment"> * Local Includes</span>
<a name="l00054"></a>00054 <span class="comment"> *</span>
<a name="l00055"></a>00055 <span class="comment"> ****************************************************************************/</span>
<a name="l00056"></a>00056 
<a name="l00057"></a>00057 
<a name="l00058"></a>00058 
<a name="l00059"></a>00059 <span class="comment">/****************************************************************************</span>
<a name="l00060"></a>00060 <span class="comment"> *</span>
<a name="l00061"></a>00061 <span class="comment"> * Forward declarations</span>
<a name="l00062"></a>00062 <span class="comment"> *</span>
<a name="l00063"></a>00063 <span class="comment"> ****************************************************************************/</span>
<a name="l00064"></a>00064 
<a name="l00065"></a>00065 
<a name="l00066"></a>00066 
<a name="l00067"></a>00067 <span class="comment">/****************************************************************************</span>
<a name="l00068"></a>00068 <span class="comment"> *</span>
<a name="l00069"></a>00069 <span class="comment"> * Namespace</span>
<a name="l00070"></a>00070 <span class="comment"> *</span>
<a name="l00071"></a>00071 <span class="comment"> ****************************************************************************/</span>
<a name="l00072"></a>00072 
<a name="l00073"></a>00073 <span class="keyword">namespace </span>Async
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 
<a name="l00076"></a>00076 
<a name="l00077"></a>00077 <span class="comment">/****************************************************************************</span>
<a name="l00078"></a>00078 <span class="comment"> *</span>
<a name="l00079"></a>00079 <span class="comment"> * Forward declarations of classes inside of the declared namespace</span>
<a name="l00080"></a>00080 <span class="comment"> *</span>
<a name="l00081"></a>00081 <span class="comment"> ****************************************************************************/</span>
<a name="l00082"></a>00082 
<a name="l00083"></a>00083   
<a name="l00084"></a>00084 
<a name="l00085"></a>00085 <span class="comment">/****************************************************************************</span>
<a name="l00086"></a>00086 <span class="comment"> *</span>
<a name="l00087"></a>00087 <span class="comment"> * Defines &amp; typedefs</span>
<a name="l00088"></a>00088 <span class="comment"> *</span>
<a name="l00089"></a>00089 <span class="comment"> ****************************************************************************/</span>
<a name="l00090"></a>00090 
<a name="l00091"></a>00091 
<a name="l00092"></a>00092 
<a name="l00093"></a>00093 <span class="comment">/****************************************************************************</span>
<a name="l00094"></a>00094 <span class="comment"> *</span>
<a name="l00095"></a>00095 <span class="comment"> * Exported Global Variables</span>
<a name="l00096"></a>00096 <span class="comment"> *</span>
<a name="l00097"></a>00097 <span class="comment"> ****************************************************************************/</span>
<a name="l00098"></a>00098 
<a name="l00099"></a>00099 
<a name="l00100"></a>00100 
<a name="l00101"></a>00101 <span class="comment">/****************************************************************************</span>
<a name="l00102"></a>00102 <span class="comment"> *</span>
<a name="l00103"></a>00103 <span class="comment"> * Class definitions</span>
<a name="l00104"></a>00104 <span class="comment"> *</span>
<a name="l00105"></a>00105 <span class="comment"> ****************************************************************************/</span>
<a name="l00106"></a>00106 
<a name="l00111"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html">00111</a> <span class="keyword">class </span><a class="code" href="classAsync_1_1AudioStreamStateDetector.html" title="A class that just passes the audio through and fires an event when the stream state...">AudioStreamStateDetector</a> : <span class="keyword">public</span> <a class="code" href="classAsync_1_1AudioPassthrough.html" title="This class just let the audio pass through.">AudioPassthrough</a>, <span class="keyword">public</span> SigC::Object
<a name="l00112"></a>00112 {
<a name="l00113"></a>00113   <span class="keyword">public</span>:
<a name="l00117"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a03dd6d5e4d8bbf4c6e249b657bf5db6c">00117</a>     <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a03dd6d5e4d8bbf4c6e249b657bf5db6c" title="Default constuctor.">AudioStreamStateDetector</a>(<span class="keywordtype">void</span>) : stream_state(STREAM_IDLE) {}
<a name="l00118"></a>00118   
<a name="l00122"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a64397183dee0492b5743853bc5f5cbc5">00122</a>     <span class="keyword">virtual</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a64397183dee0492b5743853bc5f5cbc5" title="Destructor.">~AudioStreamStateDetector</a>(<span class="keywordtype">void</span>) {}
<a name="l00123"></a>00123   
<a name="l00135"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a00df5765e2f3ab843655f34247850d93">00135</a>     <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a00df5765e2f3ab843655f34247850d93" title="Write samples into this audio sink.">writeSamples</a>(<span class="keyword">const</span> <span class="keywordtype">float</span> *samples, <span class="keywordtype">int</span> count)
<a name="l00136"></a>00136     {
<a name="l00137"></a>00137       <span class="keywordflow">if</span> (stream_state != STREAM_ACTIVE)
<a name="l00138"></a>00138       {
<a name="l00139"></a>00139         stream_state = STREAM_ACTIVE;
<a name="l00140"></a>00140         <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#ae262d62cbae5502a0081a8a9fcade291" title="A signal that is emitted when the stream state changes.">sigStreamStateChanged</a>(<span class="keyword">true</span>, <span class="keyword">false</span>);
<a name="l00141"></a>00141       }
<a name="l00142"></a>00142       <span class="keywordflow">return</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a00df5765e2f3ab843655f34247850d93" title="Write samples into this audio sink.">AudioPassthrough::writeSamples</a>(samples, count);
<a name="l00143"></a>00143     }
<a name="l00144"></a>00144     
<a name="l00153"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a17e1b81ff934e8f31ce116c4f657db8e">00153</a>     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a17e1b81ff934e8f31ce116c4f657db8e" title="Tell the sink to flush the previously written samples.">flushSamples</a>(<span class="keywordtype">void</span>)
<a name="l00154"></a>00154     {
<a name="l00155"></a>00155       <span class="keywordflow">if</span> (stream_state != STREAM_FLUSHING)
<a name="l00156"></a>00156       {
<a name="l00157"></a>00157         stream_state = STREAM_FLUSHING;
<a name="l00158"></a>00158         <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#ae262d62cbae5502a0081a8a9fcade291" title="A signal that is emitted when the stream state changes.">sigStreamStateChanged</a>(<span class="keyword">false</span>, <span class="keyword">false</span>);
<a name="l00159"></a>00159       }
<a name="l00160"></a>00160       <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a17e1b81ff934e8f31ce116c4f657db8e" title="Tell the sink to flush the previously written samples.">AudioPassthrough::flushSamples</a>();
<a name="l00161"></a>00161     }
<a name="l00162"></a>00162     
<a name="l00170"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#ac3c78e78d19c8bfb228b94b1b3e15f75">00170</a>     <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#ac3c78e78d19c8bfb228b94b1b3e15f75" title="The registered sink has flushed all samples.">allSamplesFlushed</a>(<span class="keywordtype">void</span>)
<a name="l00171"></a>00171     {
<a name="l00172"></a>00172       <span class="keywordflow">if</span> (stream_state != STREAM_IDLE)
<a name="l00173"></a>00173       {
<a name="l00174"></a>00174         stream_state = STREAM_IDLE;
<a name="l00175"></a>00175         <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#ae262d62cbae5502a0081a8a9fcade291" title="A signal that is emitted when the stream state changes.">sigStreamStateChanged</a>(<span class="keyword">false</span>, <span class="keyword">true</span>);
<a name="l00176"></a>00176       }
<a name="l00177"></a>00177       <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#ac3c78e78d19c8bfb228b94b1b3e15f75" title="The registered sink has flushed all samples.">AudioPassthrough::allSamplesFlushed</a>();
<a name="l00178"></a>00178     }
<a name="l00179"></a>00179 
<a name="l00184"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#af9b89f9ad5035dcaa7dd011ce9e16c65">00184</a>     <span class="keywordtype">bool</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#af9b89f9ad5035dcaa7dd011ce9e16c65" title="Check if the steam is idle or not.">isIdle</a>(<span class="keywordtype">void</span>)<span class="keyword">     const </span>{ <span class="keywordflow">return</span> (stream_state == STREAM_IDLE); }
<a name="l00185"></a>00185 
<a name="l00191"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a9947d6b76a58fc9d12d9f26cd3f3fe54">00191</a>     <span class="keywordtype">bool</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a9947d6b76a58fc9d12d9f26cd3f3fe54" title="Check if the steam is active or not.">isActive</a>(<span class="keywordtype">void</span>)<span class="keyword">   const </span>{ <span class="keywordflow">return</span> (stream_state == STREAM_ACTIVE); }
<a name="l00192"></a>00192 
<a name="l00198"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a3f0343475dfe0240e59d0f0750064a3e">00198</a>     <span class="keywordtype">bool</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a3f0343475dfe0240e59d0f0750064a3e" title="Check if the steam is flushing or not.">isFlushing</a>(<span class="keywordtype">void</span>)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> (stream_state == STREAM_FLUSHING); }
<a name="l00199"></a>00199     
<a name="l00205"></a><a class="code" href="classAsync_1_1AudioStreamStateDetector.html#ae262d62cbae5502a0081a8a9fcade291">00205</a>     SigC::Signal2&lt;void, bool, bool&gt; <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#ae262d62cbae5502a0081a8a9fcade291" title="A signal that is emitted when the stream state changes.">sigStreamStateChanged</a>;
<a name="l00206"></a>00206     
<a name="l00207"></a>00207     
<a name="l00208"></a>00208   <span class="keyword">private</span>:
<a name="l00209"></a>00209     <a class="code" href="classAsync_1_1AudioStreamStateDetector.html#a03dd6d5e4d8bbf4c6e249b657bf5db6c" title="Default constuctor.">AudioStreamStateDetector</a>(<span class="keyword">const</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html" title="A class that just passes the audio through and fires an event when the stream state...">AudioStreamStateDetector</a>&amp;);
<a name="l00210"></a>00210     <a class="code" href="classAsync_1_1AudioStreamStateDetector.html" title="A class that just passes the audio through and fires an event when the stream state...">AudioStreamStateDetector</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="classAsync_1_1AudioStreamStateDetector.html" title="A class that just passes the audio through and fires an event when the stream state...">AudioStreamStateDetector</a>&amp;);
<a name="l00211"></a>00211 
<a name="l00212"></a>00212     <span class="keyword">typedef</span> <span class="keyword">enum</span>
<a name="l00213"></a>00213     {
<a name="l00214"></a>00214       STREAM_IDLE, STREAM_ACTIVE, STREAM_FLUSHING
<a name="l00215"></a>00215     } StreamState;
<a name="l00216"></a>00216 
<a name="l00217"></a>00217     StreamState stream_state;
<a name="l00218"></a>00218     
<a name="l00219"></a>00219 }; <span class="comment">/* AudioStreamStateDetector */</span>
<a name="l00220"></a>00220 
<a name="l00221"></a>00221 
<a name="l00222"></a>00222 } <span class="comment">/* namespace */</span>
<a name="l00223"></a>00223 
<a name="l00224"></a>00224 <span class="preprocessor">#endif </span><span class="comment">/* ASYNC_AUDIO_STREAM_STATE_DETECTOR_INCLUDED */</span>
<a name="l00225"></a>00225 
<a name="l00226"></a>00226 
<a name="l00227"></a>00227 
<a name="l00228"></a>00228 <span class="comment">/*</span>
<a name="l00229"></a>00229 <span class="comment"> * This file has not been truncated</span>
<a name="l00230"></a>00230 <span class="comment"> */</span>
<a name="l00231"></a>00231 
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