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| <h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstfft.top_of_page"></a>gstfft</span></h2> |
| <p>gstfft — General FFT functions and declarations</p> |
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| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstfft.functions"></a><h2>Functions</h2> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="functions_return"> |
| <col class="functions_name"> |
| </colgroup> |
| <tbody><tr> |
| <td class="function_type"> |
| <a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> |
| </td> |
| <td class="function_name"> |
| <a class="link" href="gst-plugins-base-libs-gstfft.html#gst-fft-next-fast-length" title="gst_fft_next_fast_length ()">gst_fft_next_fast_length</a> <span class="c_punctuation">()</span> |
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| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstfft.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">enum</td> |
| <td class="function_name"><a class="link" href="gst-plugins-base-libs-gstfft.html#GstFFTWindow" title="enum GstFFTWindow">GstFFTWindow</a></td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstfft.includes"></a><h2>Includes</h2> |
| <pre class="synopsis">#include <gst/fft/gstfft.h> |
| </pre> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstfft.description"></a><h2>Description</h2> |
| <p>This library includes general definitions and functions, useful for |
| all typed FFT classes.</p> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstfft.functions_details"></a><h2>Functions</h2> |
| <div class="refsect2"> |
| <a name="gst-fft-next-fast-length"></a><h3>gst_fft_next_fast_length ()</h3> |
| <pre class="programlisting"><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> |
| gst_fft_next_fast_length (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glibglib-Basic-Types.html#gint"><span class="type">gint</span></a> n</code></em>);</pre> |
| <p>Returns the next number to <em class="parameter"><code>n</code></em> |
| that is entirely a product |
| of 2, 3 and 5. Using this as the <em class="parameter"><code>len</code></em> |
| parameter for |
| the different GstFFT types will provide the best performance.</p> |
| <div class="refsect3"> |
| <a name="gst-fft-next-fast-length.parameters"></a><h4>Parameters</h4> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="150px" class="parameters_name"> |
| <col class="parameters_description"> |
| <col width="200px" class="parameters_annotations"> |
| </colgroup> |
| <tbody><tr> |
| <td class="parameter_name"><p>n</p></td> |
| <td class="parameter_description"><p>Number for which the next fast length should be returned</p></td> |
| <td class="parameter_annotations"> </td> |
| </tr></tbody> |
| </table></div> |
| </div> |
| <div class="refsect3"> |
| <a name="gst-fft-next-fast-length.returns"></a><h4>Returns</h4> |
| <p> the next fast FFT length.</p> |
| </div> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a name="gst-plugins-base-libs-gstfft.other_details"></a><h2>Types and Values</h2> |
| <div class="refsect2"> |
| <a name="GstFFTWindow"></a><h3>enum GstFFTWindow</h3> |
| <p>The various window functions available.</p> |
| <div class="refsect3"> |
| <a name="GstFFTWindow.members"></a><h4>Members</h4> |
| <div class="informaltable"><table class="informaltable" width="100%" border="0"> |
| <colgroup> |
| <col width="300px" class="enum_members_name"> |
| <col class="enum_members_description"> |
| <col width="200px" class="enum_members_annotations"> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FFT-WINDOW-RECTANGULAR:CAPS"></a>GST_FFT_WINDOW_RECTANGULAR</p></td> |
| <td class="enum_member_description"> |
| <p>Rectangular window</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FFT-WINDOW-HAMMING:CAPS"></a>GST_FFT_WINDOW_HAMMING</p></td> |
| <td class="enum_member_description"> |
| <p>Hamming window</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FFT-WINDOW-HANN:CAPS"></a>GST_FFT_WINDOW_HANN</p></td> |
| <td class="enum_member_description"> |
| <p>Hann (sometimes also called Hanning) window</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FFT-WINDOW-BARTLETT:CAPS"></a>GST_FFT_WINDOW_BARTLETT</p></td> |
| <td class="enum_member_description"> |
| <p>Bartlett window</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| <tr> |
| <td class="enum_member_name"><p><a name="GST-FFT-WINDOW-BLACKMAN:CAPS"></a>GST_FFT_WINDOW_BLACKMAN</p></td> |
| <td class="enum_member_description"> |
| <p>Blackman window</p> |
| </td> |
| <td class="enum_member_annotations"> </td> |
| </tr> |
| </tbody> |
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