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| <h2><span class="refentrytitle"><a name="gst-plugins-good-plugins-directsoundsink.top_of_page"></a>directsoundsink</span></h2> |
| <p>directsoundsink</p> |
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| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-directsoundsink.other"></a><h2>Types and Values</h2> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="name"> |
| <col class="description"> |
| </colgroup> |
| <tbody><tr> |
| <td class="datatype_keyword">struct</td> |
| <td class="function_name"><a class="link" href="gst-plugins-good-plugins-directsoundsink.html#GstDirectSoundSink" title="struct GstDirectSoundSink">GstDirectSoundSink</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-directsoundsink.description"></a><h2>Description</h2> |
| <p>This element lets you output sound using the DirectSound API.</p> |
| <p>Note that you should almost always use generic audio conversion elements |
| like audioconvert and audioresample in front of an audiosink to make sure |
| your pipeline works under all circumstances (those conversion elements will |
| act in passthrough-mode if no conversion is necessary).</p> |
| <div class="refsect2"> |
| <a name="id-1.2.46.4.4"></a><h3>Example pipelines</h3> |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1</pre></td> |
| <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> <span class="gtkdoc opt">-</span>v audiotestsrc <span class="gtkdoc opt">!</span> audioconvert <span class="gtkdoc opt">!</span> volume volume<span class="gtkdoc opt">=</span><span class="number">0.1</span> <span class="gtkdoc opt">!</span> directsoundsink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| will output a sine wave (continuous beep sound) to your sound card (with |
| a very low volume as precaution). |
| <div class="informalexample"> |
| <table class="listing_frame" border="0" cellpadding="0" cellspacing="0"> |
| <tbody> |
| <tr> |
| <td class="listing_lines" align="right"><pre>1</pre></td> |
| <td class="listing_code"><pre class="programlisting">gst<span class="gtkdoc opt">-</span>launch<span class="gtkdoc opt">-</span><span class="number">1.0</span> <span class="gtkdoc opt">-</span>v filesrc location<span class="gtkdoc opt">=</span>music<span class="gtkdoc opt">.</span>ogg <span class="gtkdoc opt">!</span> decodebin <span class="gtkdoc opt">!</span> audioconvert <span class="gtkdoc opt">!</span> audioresample <span class="gtkdoc opt">!</span> directsoundsink</pre></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| will play an Ogg/Vorbis audio file and output it. |
| </div> |
| <div class="refsynopsisdiv"> |
| <h2>Synopsis</h2> |
| <div class="refsect2"> |
| <a name="id-1.2.46.4.5.1"></a><h3>Element Information</h3> |
| <div class="variablelist"><table border="0" class="variablelist"> |
| <colgroup> |
| <col align="left" valign="top"> |
| <col> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td><p><span class="term">plugin</span></p></td> |
| <td> |
| <a class="link" href="gst-plugins-good-plugins-plugin-directsound.html#plugin-directsound">directsound</a> |
| </td> |
| </tr> |
| <tr> |
| <td><p><span class="term">author</span></p></td> |
| <td>Sebastien Moutte <sebastien@moutte.net></td> |
| </tr> |
| <tr> |
| <td><p><span class="term">class</span></p></td> |
| <td>Sink/Audio</td> |
| </tr> |
| </tbody> |
| </table></div> |
| </div> |
| <hr> |
| <div class="refsect2"> |
| <a name="id-1.2.46.4.5.2"></a><h3>Element Pads</h3> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-directsoundsink.functions_details"></a><h2>Functions</h2> |
| <p></p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-good-plugins-directsoundsink.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstDirectSoundSink"></a><h3>struct GstDirectSoundSink</h3> |
| <pre class="programlisting">struct GstDirectSoundSink { |
| GstAudioSink sink; |
| |
| |
| /* directsound object interface pointer */ |
| LPDIRECTSOUND pDS; |
| |
| /* directsound sound object interface pointer */ |
| LPDIRECTSOUNDBUFFER pDSBSecondary; |
| |
| /* directSound buffer size */ |
| guint buffer_size; |
| |
| /* offset of the circular buffer where we must write next */ |
| guint current_circular_offset; |
| |
| guint bytes_per_sample; |
| |
| /* current volume setup by mixer interface */ |
| glong volume; |
| gboolean mute; |
| |
| /* current directsound device ID */ |
| gchar * device_id; |
| |
| GstCaps *cached_caps; |
| /* lock used to protect writes and resets */ |
| GMutex dsound_lock; |
| |
| gboolean first_buffer_after_reset; |
| |
| GstAudioRingBufferFormatType type; |
| }; |
| </pre> |
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