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<div class="title">DSP Context</div> </div>
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<p>DSP Context.
<a href="#details">More...</a></p>
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Modules</h2></td></tr>
<tr class="memitem:group__dsputils"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dsputils.html">DSP Utilities</a></td></tr>
<tr class="memdesc:group__dsputils"><td class="mdescLeft"> </td><td class="mdescRight">DSP Utilities. <br /></td></tr>
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Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structgavl__dsp__funcs__t.html">gavl_dsp_funcs_t</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">Function table. <a href="structgavl__dsp__funcs__t.html#details">More...</a><br /></td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:gafe123d8ea3bcd946fedfa03c292a05f1"><td class="memItemLeft" align="right" valign="top">typedef struct gavl_dsp_context_s </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a></td></tr>
<tr class="memdesc:gafe123d8ea3bcd946fedfa03c292a05f1"><td class="mdescLeft"> </td><td class="mdescRight">Opaque DSP context. <a href="#gafe123d8ea3bcd946fedfa03c292a05f1">More...</a><br /></td></tr>
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Functions</h2></td></tr>
<tr class="memitem:gae1236951171a8bc22848bc34b836dc88"><td class="memItemLeft" align="right" valign="top">GAVL_PUBLIC <a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dsp.html#gae1236951171a8bc22848bc34b836dc88">gavl_dsp_context_create</a> ()</td></tr>
<tr class="memdesc:gae1236951171a8bc22848bc34b836dc88"><td class="mdescLeft"> </td><td class="mdescRight">Create a DSP context. <a href="#gae1236951171a8bc22848bc34b836dc88">More...</a><br /></td></tr>
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<tr class="memitem:ga50363b4981fa3d1d13a8bbf289fe6cdf"><td class="memItemLeft" align="right" valign="top">GAVL_PUBLIC void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dsp.html#ga50363b4981fa3d1d13a8bbf289fe6cdf">gavl_dsp_context_set_quality</a> (<a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> *ctx, int q)</td></tr>
<tr class="memdesc:ga50363b4981fa3d1d13a8bbf289fe6cdf"><td class="mdescLeft"> </td><td class="mdescRight">Set the quality for a DSP context. <a href="#ga50363b4981fa3d1d13a8bbf289fe6cdf">More...</a><br /></td></tr>
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<tr class="memitem:gaf347635df485178c7da9796bb7347963"><td class="memItemLeft" align="right" valign="top">GAVL_PUBLIC void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dsp.html#gaf347635df485178c7da9796bb7347963">gavl_dsp_context_set_accel_flags</a> (<a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> *ctx, int flags)</td></tr>
<tr class="memdesc:gaf347635df485178c7da9796bb7347963"><td class="mdescLeft"> </td><td class="mdescRight">Set the acceleration flags for a DSP context. <a href="#gaf347635df485178c7da9796bb7347963">More...</a><br /></td></tr>
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<tr class="memitem:ga100c077bd8d2e26aabbec7442574c44f"><td class="memItemLeft" align="right" valign="top">GAVL_PUBLIC <a class="el" href="structgavl__dsp__funcs__t.html">gavl_dsp_funcs_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dsp.html#ga100c077bd8d2e26aabbec7442574c44f">gavl_dsp_context_get_funcs</a> (<a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> *ctx)</td></tr>
<tr class="memdesc:ga100c077bd8d2e26aabbec7442574c44f"><td class="mdescLeft"> </td><td class="mdescRight">Get the functions. <a href="#ga100c077bd8d2e26aabbec7442574c44f">More...</a><br /></td></tr>
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<tr class="memitem:ga3fa6e96c8c937e90d86d5c98210eb4d8"><td class="memItemLeft" align="right" valign="top">GAVL_PUBLIC void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__dsp.html#ga3fa6e96c8c937e90d86d5c98210eb4d8">gavl_dsp_context_destroy</a> (<a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> *ctx)</td></tr>
<tr class="memdesc:ga3fa6e96c8c937e90d86d5c98210eb4d8"><td class="mdescLeft"> </td><td class="mdescRight">Destroy a DSP context. <a href="#ga3fa6e96c8c937e90d86d5c98210eb4d8">More...</a><br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>DSP Context. </p>
<p>In addition to the higher level gavl converters, gavl provides some low-level dsp routines. They can be used for writing filters or codecs. The DSP context is initialized with a quality parameter (see <a class="el" href="group__quality.html">Quality settings</a>), which selects among various versions of a function. </p>
<h2 class="groupheader">Typedef Documentation</h2>
<a id="gafe123d8ea3bcd946fedfa03c292a05f1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gafe123d8ea3bcd946fedfa03c292a05f1">§ </a></span>gavl_dsp_context_t</h2>
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<td class="memname">typedef struct gavl_dsp_context_s <a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a></td>
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<p>Opaque DSP context. </p>
<p>You don't want to know, what's inside here. </p>
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<h2 class="groupheader">Function Documentation</h2>
<a id="gae1236951171a8bc22848bc34b836dc88"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gae1236951171a8bc22848bc34b836dc88">§ </a></span>gavl_dsp_context_create()</h2>
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<td class="memname">GAVL_PUBLIC <a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a>* gavl_dsp_context_create </td>
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<p>Create a DSP context. </p>
<dl class="section return"><dt>Returns</dt><dd>A newly allocated DSP context</dd></dl>
<p>This initialized a DSP context with all functions chosen according to the default quality value. </p>
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<a id="ga50363b4981fa3d1d13a8bbf289fe6cdf"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga50363b4981fa3d1d13a8bbf289fe6cdf">§ </a></span>gavl_dsp_context_set_quality()</h2>
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<td class="memname">GAVL_PUBLIC void gavl_dsp_context_set_quality </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>q</em> </td>
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<p>Set the quality for a DSP context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>A DSP context </td></tr>
<tr><td class="paramname">q</td><td>A quality level</td></tr>
</table>
</dd>
</dl>
<p>See <a class="el" href="group__quality.html">Quality settings</a>. </p>
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<a id="gaf347635df485178c7da9796bb7347963"></a>
<h2 class="memtitle"><span class="permalink"><a href="#gaf347635df485178c7da9796bb7347963">§ </a></span>gavl_dsp_context_set_accel_flags()</h2>
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<td class="memname">GAVL_PUBLIC void gavl_dsp_context_set_accel_flags </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> * </td>
<td class="paramname"><em>ctx</em>, </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>flags</em> </td>
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<p>Set the acceleration flags for a DSP context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>A DSP context </td></tr>
<tr><td class="paramname">flags</td><td>Flags</td></tr>
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</dd>
</dl>
<p>By default the flags are detected automatically and functions are chosen based on the quality </p>
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<a id="ga100c077bd8d2e26aabbec7442574c44f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga100c077bd8d2e26aabbec7442574c44f">§ </a></span>gavl_dsp_context_get_funcs()</h2>
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<td class="memname">GAVL_PUBLIC <a class="el" href="structgavl__dsp__funcs__t.html">gavl_dsp_funcs_t</a>* gavl_dsp_context_get_funcs </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Get the functions. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>A DSP context </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The function table</dd></dl>
<p>The address of the table itself won't change by a call to <a class="el" href="group__dsp.html#ga50363b4981fa3d1d13a8bbf289fe6cdf">gavl_dsp_context_set_quality</a>, but the contained functions will. </p>
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<a id="ga3fa6e96c8c937e90d86d5c98210eb4d8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga3fa6e96c8c937e90d86d5c98210eb4d8">§ </a></span>gavl_dsp_context_destroy()</h2>
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<td class="memname">GAVL_PUBLIC void gavl_dsp_context_destroy </td>
<td>(</td>
<td class="paramtype"><a class="el" href="group__dsp.html#gafe123d8ea3bcd946fedfa03c292a05f1">gavl_dsp_context_t</a> * </td>
<td class="paramname"><em>ctx</em></td><td>)</td>
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<p>Destroy a DSP context. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">ctx</td><td>A DSP context </td></tr>
</table>
</dd>
</dl>
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