pdk/docs/classandroid_1_1_audio_stream_in.html - platform/development - Git at Google

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   <div class="navpath"><a class="el" href="namespaceandroid.html">android</a>::<a class="el" href="classandroid_1_1_audio_stream_in.html">AudioStreamIn</a>
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 <h1>android::AudioStreamIn Class Reference</h1><!-- doxytag: class="android::AudioStreamIn" --><a class="el" href="classandroid_1_1_audio_stream_in.html" title="AudioStreamIn is the abstraction interface for the audio input hardware.">AudioStreamIn</a> is the abstraction interface for the audio input hardware.
 <a href="#_details">More...</a>
 <p>
 <code>#include &lt;<a class="el" href="_audio_hardware_interface_8h-source.html">AudioHardwareInterface.h</a>&gt;</code>
 <p>
 <table border="0" cellpadding="0" cellspacing="0">
 <tr><td></td></tr>
 <tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">virtual&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#72067577568bbdd0163c1369fe80f101">~AudioStreamIn</a> ()=0</td></tr>

 <tr><td class="memItemLeft" nowrap align="right" valign="top">virtual size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#a458f9cde3edde82f256af7eaa7b2ddf">bufferSize</a> () const =0</td></tr>

 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">return the input buffer size allowed by audio driver  <a href="#a458f9cde3edde82f256af7eaa7b2ddf"></a><br></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#04f84006dd5f2e0a5e512897a039f851">channelCount</a> () const =0</td></tr>

 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">return the number of audio input channels  <a href="#04f84006dd5f2e0a5e512897a039f851"></a><br></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#4ade98c5243b9ed5f3a71a8f36e74b36">format</a> () const =0</td></tr>

 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">return audio format in 8bit or 16bit PCM format - eg.  <a href="#4ade98c5243b9ed5f3a71a8f36e74b36"></a><br></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">uint32_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#43d2c6b97806c005f0717a7bb6f7595c">frameSize</a> () const </td></tr>

 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">return the frame size (number of bytes per sample).  <a href="#43d2c6b97806c005f0717a7bb6f7595c"></a><br></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">virtual status_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#339822afb3f2f2ac1b4c775d31d12440">setGain</a> (float gain)=0</td></tr>

 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">set the input gain for the audio driver.  <a href="#339822afb3f2f2ac1b4c775d31d12440"></a><br></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">virtual ssize_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#7c313cbfbb47dafd90f3225bcd26e592">read</a> (void *buffer, ssize_t bytes)=0</td></tr>

 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">read audio buffer in from audio driver  <a href="#7c313cbfbb47dafd90f3225bcd26e592"></a><br></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">virtual status_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#18c3760208bfb99498715a0d4977f675">dump</a> (int fd, const Vector&lt; String16 &gt; &amp;args)=0</td></tr>

 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">dump the state of the audio input device  <a href="#18c3760208bfb99498715a0d4977f675"></a><br></td></tr>
 <tr><td class="memItemLeft" nowrap align="right" valign="top">virtual status_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#93fab46e8afdbaedd4d20cc6ee2b7c41">standby</a> ()=0</td></tr>

 <tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Put the audio hardware input into standby mode.  <a href="#93fab46e8afdbaedd4d20cc6ee2b7c41"></a><br></td></tr>
 </table>
 <hr><a name="_details"></a><h2>Detailed Description</h2>
 <a class="el" href="classandroid_1_1_audio_stream_in.html" title="AudioStreamIn is the abstraction interface for the audio input hardware.">AudioStreamIn</a> is the abstraction interface for the audio input hardware.
 <p>
 It defines the various properties of the audio hardware input driver.
 <p>Definition at line <a class="el" href="_audio_hardware_interface_8h-source.html#l00093">93</a> of file <a class="el" href="_audio_hardware_interface_8h-source.html">AudioHardwareInterface.h</a>.</p>
 <hr><h2>Constructor &amp; Destructor Documentation</h2>
 <a class="anchor" name="72067577568bbdd0163c1369fe80f101"></a><!-- doxytag: member="android::AudioStreamIn::~AudioStreamIn" ref="72067577568bbdd0163c1369fe80f101" args="()=0" -->
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           <td class="memname">virtual android::AudioStreamIn::~AudioStreamIn           </td>
           <td>(</td>
           <td class="paramname">          </td>
           <td>&nbsp;)&nbsp;</td>
           <td><code> [pure virtual]</code></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">

 <p>

 </div>
 </div><p>
 <hr><h2>Member Function Documentation</h2>
 <a class="anchor" name="a458f9cde3edde82f256af7eaa7b2ddf"></a><!-- doxytag: member="android::AudioStreamIn::bufferSize" ref="a458f9cde3edde82f256af7eaa7b2ddf" args="() const =0" -->
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           <td class="memname">virtual size_t android::AudioStreamIn::bufferSize           </td>
           <td>(</td>
           <td class="paramname">          </td>
           <td>&nbsp;)&nbsp;</td>
           <td> const<code> [pure virtual]</code></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">

 <p>
 return the input buffer size allowed by audio driver
 <p>

 </div>
 </div><p>
 <a class="anchor" name="04f84006dd5f2e0a5e512897a039f851"></a><!-- doxytag: member="android::AudioStreamIn::channelCount" ref="04f84006dd5f2e0a5e512897a039f851" args="() const =0" -->
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           <td class="memname">virtual int android::AudioStreamIn::channelCount           </td>
           <td>(</td>
           <td class="paramname">          </td>
           <td>&nbsp;)&nbsp;</td>
           <td> const<code> [pure virtual]</code></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">

 <p>
 return the number of audio input channels
 <p>

 </div>
 </div><p>
 <a class="anchor" name="4ade98c5243b9ed5f3a71a8f36e74b36"></a><!-- doxytag: member="android::AudioStreamIn::format" ref="4ade98c5243b9ed5f3a71a8f36e74b36" args="() const =0" -->
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           <td class="memname">virtual int android::AudioStreamIn::format           </td>
           <td>(</td>
           <td class="paramname">          </td>
           <td>&nbsp;)&nbsp;</td>
           <td> const<code> [pure virtual]</code></td>
         </tr>
       </table>
 </div>
 <div class="memdoc">

 <p>
 return audio format in 8bit or 16bit PCM format - eg.
 <p>
 AudioSystem:PCM_16_BIT
 </div>
 </div><p>
 <a class="anchor" name="43d2c6b97806c005f0717a7bb6f7595c"></a><!-- doxytag: member="android::AudioStreamIn::frameSize" ref="43d2c6b97806c005f0717a7bb6f7595c" args="() const " -->
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           <td class="memname">uint32_t android::AudioStreamIn::frameSize           </td>
           <td>(</td>
           <td class="paramname">          </td>
           <td>&nbsp;)&nbsp;</td>
           <td> const<code> [inline]</code></td>
         </tr>
       </table>
 </div>
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 <p>
 return the frame size (number of bytes per sample).
 <p>

 <p>Definition at line <a class="el" href="_audio_hardware_interface_8h-source.html#l00112">112</a> of file <a class="el" href="_audio_hardware_interface_8h-source.html">AudioHardwareInterface.h</a>.</p>

 </div>
 </div><p>
 <a class="anchor" name="339822afb3f2f2ac1b4c775d31d12440"></a><!-- doxytag: member="android::AudioStreamIn::setGain" ref="339822afb3f2f2ac1b4c775d31d12440" args="(float gain)=0" -->
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           <td class="memname">virtual status_t android::AudioStreamIn::setGain           </td>
           <td>(</td>
           <td class="paramtype">float&nbsp;</td>
           <td class="paramname"> <em>gain</em>          </td>
           <td>&nbsp;)&nbsp;</td>
           <td><code> [pure virtual]</code></td>
         </tr>
       </table>
 </div>
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 <p>
 set the input gain for the audio driver.
 <p>
 This method is for for future use
 </div>
 </div><p>
 <a class="anchor" name="7c313cbfbb47dafd90f3225bcd26e592"></a><!-- doxytag: member="android::AudioStreamIn::read" ref="7c313cbfbb47dafd90f3225bcd26e592" args="(void *buffer, ssize_t bytes)=0" -->
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           <td class="memname">virtual ssize_t android::AudioStreamIn::read           </td>
           <td>(</td>
           <td class="paramtype">void *&nbsp;</td>
           <td class="paramname"> <em>buffer</em>, </td>
         </tr>
         <tr>
           <td class="paramkey"></td>
           <td></td>
           <td class="paramtype">ssize_t&nbsp;</td>
           <td class="paramname"> <em>bytes</em></td><td>&nbsp;</td>
         </tr>
         <tr>
           <td></td>
           <td>)</td>
           <td></td><td></td><td><code> [pure virtual]</code></td>
         </tr>
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 <div class="memdoc">

 <p>
 read audio buffer in from audio driver
 <p>

 </div>
 </div><p>
 <a class="anchor" name="18c3760208bfb99498715a0d4977f675"></a><!-- doxytag: member="android::AudioStreamIn::dump" ref="18c3760208bfb99498715a0d4977f675" args="(int fd, const Vector&lt; String16 &gt; &amp;args)=0" -->
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           <td class="memname">virtual status_t android::AudioStreamIn::dump           </td>
           <td>(</td>
           <td class="paramtype">int&nbsp;</td>
           <td class="paramname"> <em>fd</em>, </td>
         </tr>
         <tr>
           <td class="paramkey"></td>
           <td></td>
           <td class="paramtype">const Vector&lt; String16 &gt; &amp;&nbsp;</td>
           <td class="paramname"> <em>args</em></td><td>&nbsp;</td>
         </tr>
         <tr>
           <td></td>
           <td>)</td>
           <td></td><td></td><td><code> [pure virtual]</code></td>
         </tr>
       </table>
 </div>
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 <p>
 dump the state of the audio input device
 <p>

 </div>
 </div><p>
 <a class="anchor" name="93fab46e8afdbaedd4d20cc6ee2b7c41"></a><!-- doxytag: member="android::AudioStreamIn::standby" ref="93fab46e8afdbaedd4d20cc6ee2b7c41" args="()=0" -->
 <div class="memitem">
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           <td class="memname">virtual status_t android::AudioStreamIn::standby           </td>
           <td>(</td>
           <td class="paramname">          </td>
           <td>&nbsp;)&nbsp;</td>
           <td><code> [pure virtual]</code></td>
         </tr>
       </table>
 </div>
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 <p>
 Put the audio hardware input into standby mode.
 <p>
 Returns status based on include/utils/Errors.h
 </div>
 </div><p>
 <hr>The documentation for this class was generated from the following file:<ul>
 <li><a class="el" href="_audio_hardware_interface_8h-source.html">AudioHardwareInterface.h</a></ul>
 </div>
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	<div class="navpath"><a class="el" href="namespaceandroid.html">android</a>::<a class="el" href="classandroid_1_1_audio_stream_in.html">AudioStreamIn</a>
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	<div class="contents">
	<h1>android::AudioStreamIn Class Reference</h1><!-- doxytag: class="android::AudioStreamIn" --><a class="el" href="classandroid_1_1_audio_stream_in.html" title="AudioStreamIn is the abstraction interface for the audio input hardware.">AudioStreamIn</a> is the abstraction interface for the audio input hardware.
	<a href="#_details">More...</a>
	<p>
	<code>#include <<a class="el" href="_audio_hardware_interface_8h-source.html">AudioHardwareInterface.h</a>></code>
	<p>
	<table border="0" cellpadding="0" cellspacing="0">
	<tr><td></td></tr>
	<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
	<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#72067577568bbdd0163c1369fe80f101">~AudioStreamIn</a> ()=0</td></tr>

	<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#a458f9cde3edde82f256af7eaa7b2ddf">bufferSize</a> () const =0</td></tr>

	<tr><td class="mdescLeft"> </td><td class="mdescRight">return the input buffer size allowed by audio driver <a href="#a458f9cde3edde82f256af7eaa7b2ddf"></a><br></td></tr>
	<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#04f84006dd5f2e0a5e512897a039f851">channelCount</a> () const =0</td></tr>

	<tr><td class="mdescLeft"> </td><td class="mdescRight">return the number of audio input channels <a href="#04f84006dd5f2e0a5e512897a039f851"></a><br></td></tr>
	<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#4ade98c5243b9ed5f3a71a8f36e74b36">format</a> () const =0</td></tr>

	<tr><td class="mdescLeft"> </td><td class="mdescRight">return audio format in 8bit or 16bit PCM format - eg. <a href="#4ade98c5243b9ed5f3a71a8f36e74b36"></a><br></td></tr>
	<tr><td class="memItemLeft" nowrap align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#43d2c6b97806c005f0717a7bb6f7595c">frameSize</a> () const </td></tr>

	<tr><td class="mdescLeft"> </td><td class="mdescRight">return the frame size (number of bytes per sample). <a href="#43d2c6b97806c005f0717a7bb6f7595c"></a><br></td></tr>
	<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#339822afb3f2f2ac1b4c775d31d12440">setGain</a> (float gain)=0</td></tr>

	<tr><td class="mdescLeft"> </td><td class="mdescRight">set the input gain for the audio driver. <a href="#339822afb3f2f2ac1b4c775d31d12440"></a><br></td></tr>
	<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual ssize_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#7c313cbfbb47dafd90f3225bcd26e592">read</a> (void *buffer, ssize_t bytes)=0</td></tr>

	<tr><td class="mdescLeft"> </td><td class="mdescRight">read audio buffer in from audio driver <a href="#7c313cbfbb47dafd90f3225bcd26e592"></a><br></td></tr>
	<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#18c3760208bfb99498715a0d4977f675">dump</a> (int fd, const Vector< String16 > &args)=0</td></tr>

	<tr><td class="mdescLeft"> </td><td class="mdescRight">dump the state of the audio input device <a href="#18c3760208bfb99498715a0d4977f675"></a><br></td></tr>
	<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual status_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classandroid_1_1_audio_stream_in.html#93fab46e8afdbaedd4d20cc6ee2b7c41">standby</a> ()=0</td></tr>

	<tr><td class="mdescLeft"> </td><td class="mdescRight">Put the audio hardware input into standby mode. <a href="#93fab46e8afdbaedd4d20cc6ee2b7c41"></a><br></td></tr>
	</table>
	<hr><a name="_details"></a><h2>Detailed Description</h2>
	<a class="el" href="classandroid_1_1_audio_stream_in.html" title="AudioStreamIn is the abstraction interface for the audio input hardware.">AudioStreamIn</a> is the abstraction interface for the audio input hardware.
	<p>
	It defines the various properties of the audio hardware input driver.
	<p>Definition at line <a class="el" href="_audio_hardware_interface_8h-source.html#l00093">93</a> of file <a class="el" href="_audio_hardware_interface_8h-source.html">AudioHardwareInterface.h</a>.</p>
	<hr><h2>Constructor & Destructor Documentation</h2>
	<a class="anchor" name="72067577568bbdd0163c1369fe80f101"></a><!-- doxytag: member="android::AudioStreamIn::~AudioStreamIn" ref="72067577568bbdd0163c1369fe80f101" args="()=0" -->
	<div class="memitem">
	<div class="memproto">
	<table class="memname">
	<tr>
	<td class="memname">virtual android::AudioStreamIn::~AudioStreamIn </td>
	<td>(</td>
	<td class="paramname"> </td>
	<td> ) </td>
	<td><code> [pure virtual]</code></td>
	</tr>
	</table>
	</div>
	<div class="memdoc">

	<p>

	</div>
	</div><p>
	<hr><h2>Member Function Documentation</h2>
	<a class="anchor" name="a458f9cde3edde82f256af7eaa7b2ddf"></a><!-- doxytag: member="android::AudioStreamIn::bufferSize" ref="a458f9cde3edde82f256af7eaa7b2ddf" args="() const =0" -->
	<div class="memitem">
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	<td class="memname">virtual size_t android::AudioStreamIn::bufferSize </td>
	<td>(</td>
	<td class="paramname"> </td>
	<td> ) </td>
	<td> const<code> [pure virtual]</code></td>
	</tr>
	</table>
	</div>
	<div class="memdoc">

	<p>
	return the input buffer size allowed by audio driver
	<p>

	</div>
	</div><p>
	<a class="anchor" name="04f84006dd5f2e0a5e512897a039f851"></a><!-- doxytag: member="android::AudioStreamIn::channelCount" ref="04f84006dd5f2e0a5e512897a039f851" args="() const =0" -->
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	<td class="memname">virtual int android::AudioStreamIn::channelCount </td>
	<td>(</td>
	<td class="paramname"> </td>
	<td> ) </td>
	<td> const<code> [pure virtual]</code></td>
	</tr>
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	<p>
	return the number of audio input channels
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	<a class="anchor" name="4ade98c5243b9ed5f3a71a8f36e74b36"></a><!-- doxytag: member="android::AudioStreamIn::format" ref="4ade98c5243b9ed5f3a71a8f36e74b36" args="() const =0" -->
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	<td class="memname">virtual int android::AudioStreamIn::format </td>
	<td>(</td>
	<td class="paramname"> </td>
	<td> ) </td>
	<td> const<code> [pure virtual]</code></td>
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	<p>
	return audio format in 8bit or 16bit PCM format - eg.
	<p>
	AudioSystem:PCM_16_BIT
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	<a class="anchor" name="43d2c6b97806c005f0717a7bb6f7595c"></a><!-- doxytag: member="android::AudioStreamIn::frameSize" ref="43d2c6b97806c005f0717a7bb6f7595c" args="() const " -->
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	<td class="memname">uint32_t android::AudioStreamIn::frameSize </td>
	<td>(</td>
	<td class="paramname"> </td>
	<td> ) </td>
	<td> const<code> [inline]</code></td>
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	<p>
	return the frame size (number of bytes per sample).
	<p>

	<p>Definition at line <a class="el" href="_audio_hardware_interface_8h-source.html#l00112">112</a> of file <a class="el" href="_audio_hardware_interface_8h-source.html">AudioHardwareInterface.h</a>.</p>

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	<a class="anchor" name="339822afb3f2f2ac1b4c775d31d12440"></a><!-- doxytag: member="android::AudioStreamIn::setGain" ref="339822afb3f2f2ac1b4c775d31d12440" args="(float gain)=0" -->
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	<td class="memname">virtual status_t android::AudioStreamIn::setGain </td>
	<td>(</td>
	<td class="paramtype">float </td>
	<td class="paramname"> <em>gain</em> </td>
	<td> ) </td>
	<td><code> [pure virtual]</code></td>
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	<p>
	set the input gain for the audio driver.
	<p>
	This method is for for future use
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	<a class="anchor" name="7c313cbfbb47dafd90f3225bcd26e592"></a><!-- doxytag: member="android::AudioStreamIn::read" ref="7c313cbfbb47dafd90f3225bcd26e592" args="(void *buffer, ssize_t bytes)=0" -->
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	<td class="memname">virtual ssize_t android::AudioStreamIn::read </td>
	<td>(</td>
	<td class="paramtype">void * </td>
	<td class="paramname"> <em>buffer</em>, </td>
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	<td class="paramkey"></td>
	<td></td>
	<td class="paramtype">ssize_t </td>
	<td class="paramname"> <em>bytes</em></td><td> </td>
	</tr>
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	<td></td>
	<td>)</td>
	<td></td><td></td><td><code> [pure virtual]</code></td>
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	<p>
	read audio buffer in from audio driver
	<p>

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	<a class="anchor" name="18c3760208bfb99498715a0d4977f675"></a><!-- doxytag: member="android::AudioStreamIn::dump" ref="18c3760208bfb99498715a0d4977f675" args="(int fd, const Vector< String16 > &args)=0" -->
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	<td class="memname">virtual status_t android::AudioStreamIn::dump </td>
	<td>(</td>
	<td class="paramtype">int </td>
	<td class="paramname"> <em>fd</em>, </td>
	</tr>
	<tr>
	<td class="paramkey"></td>
	<td></td>
	<td class="paramtype">const Vector< String16 > & </td>
	<td class="paramname"> <em>args</em></td><td> </td>
	</tr>
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	<td></td>
	<td>)</td>
	<td></td><td></td><td><code> [pure virtual]</code></td>
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	<p>
	dump the state of the audio input device
	<p>

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	<a class="anchor" name="93fab46e8afdbaedd4d20cc6ee2b7c41"></a><!-- doxytag: member="android::AudioStreamIn::standby" ref="93fab46e8afdbaedd4d20cc6ee2b7c41" args="()=0" -->
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	<td class="memname">virtual status_t android::AudioStreamIn::standby </td>
	<td>(</td>
	<td class="paramname"> </td>
	<td> ) </td>
	<td><code> [pure virtual]</code></td>
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	<p>
	Put the audio hardware input into standby mode.
	<p>
	Returns status based on include/utils/Errors.h
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	</div><p>
	<hr>The documentation for this class was generated from the following file:<ul>
	<li><a class="el" href="_audio_hardware_interface_8h-source.html">AudioHardwareInterface.h</a></ul>
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