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<h1 class="title">FFTRealFixLen.h Example File</h1>
<span class="subtitle">multimedia/spectrum/3rdparty/fftreal/FFTRealFixLen.h</span>
<!-- $$$multimedia/spectrum/3rdparty/fftreal/FFTRealFixLen.h-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/*****************************************************************************
FFTRealFixLen.h
Copyright (c) 2005 Laurent de Soras
--- Legal stuff ---
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*Tab=3***********************************************************************/</span>
<span class="preprocessor">#if ! defined (FFTRealFixLen_HEADER_INCLUDED)</span>
<span class="preprocessor">#define FFTRealFixLen_HEADER_INCLUDED</span>
<span class="preprocessor">#if defined (_MSC_VER)</span>
<span class="preprocessor">#pragma once</span>
<span class="preprocessor">#pragma warning (4 : 4250) // "Inherits via dominance."</span>
<span class="preprocessor">#endif</span>
<span class="comment">/*\\\ INCLUDE FILES \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span>
<span class="preprocessor">#include "Array.h"</span>
<span class="preprocessor">#include "DynArray.h"</span>
<span class="preprocessor">#include "FFTRealFixLenParam.h"</span>
<span class="preprocessor">#include "OscSinCos.h"</span>
<span class="keyword">template</span> <span class="operator"><</span><span class="type">int</span> LL2<span class="operator">></span>
<span class="keyword">class</span> FFTRealFixLen
{
<span class="keyword">typedef</span> <span class="type">int</span> CompileTimeCheck1 <span class="operator">[</span>(LL2 <span class="operator">></span><span class="operator">=</span> <span class="number">0</span>) <span class="operator">?</span> <span class="number">1</span> : <span class="operator">-</span><span class="number">1</span><span class="operator">]</span>;
<span class="keyword">typedef</span> <span class="type">int</span> CompileTimeCheck2 <span class="operator">[</span>(LL2 <span class="operator"><</span><span class="operator">=</span> <span class="number">30</span>) <span class="operator">?</span> <span class="number">1</span> : <span class="operator">-</span><span class="number">1</span><span class="operator">]</span>;
<span class="comment">/*\\\ PUBLIC \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span>
<span class="keyword">public</span>:
<span class="keyword">typedef</span> FFTRealFixLenParam<span class="operator">::</span>DataType DataType;
<span class="keyword">typedef</span> OscSinCos <span class="operator"><</span>DataType<span class="operator">></span> OscType;
<span class="keyword">enum</span> { FFT_LEN_L2 <span class="operator">=</span> LL2 };
<span class="keyword">enum</span> { FFT_LEN <span class="operator">=</span> <span class="number">1</span> <span class="operator"><</span><span class="operator"><</span> FFT_LEN_L2 };
FFTRealFixLen ();
<span class="keyword">inline</span> <span class="type">long</span> get_length () <span class="keyword">const</span>;
<span class="type">void</span> do_fft (DataType f <span class="operator">[</span><span class="operator">]</span><span class="operator">,</span> <span class="keyword">const</span> DataType x <span class="operator">[</span><span class="operator">]</span>);
<span class="type">void</span> do_ifft (<span class="keyword">const</span> DataType f <span class="operator">[</span><span class="operator">]</span><span class="operator">,</span> DataType x <span class="operator">[</span><span class="operator">]</span>);
<span class="type">void</span> rescale (DataType x <span class="operator">[</span><span class="operator">]</span>) <span class="keyword">const</span>;
<span class="comment">/*\\\ PROTECTED \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span>
<span class="keyword">protected</span>:
<span class="comment">/*\\\ PRIVATE \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span>
<span class="keyword">private</span>:
<span class="keyword">enum</span> { TRIGO_BD_LIMIT <span class="operator">=</span> FFTRealFixLenParam<span class="operator">::</span>TRIGO_BD_LIMIT };
<span class="keyword">enum</span> { BR_ARR_SIZE_L2 <span class="operator">=</span> ((FFT_LEN_L2 <span class="operator">-</span> <span class="number">3</span>) <span class="operator"><</span> <span class="number">0</span>) <span class="operator">?</span> <span class="number">0</span> : (FFT_LEN_L2 <span class="operator">-</span> <span class="number">2</span>) };
<span class="keyword">enum</span> { BR_ARR_SIZE <span class="operator">=</span> <span class="number">1</span> <span class="operator"><</span><span class="operator"><</span> BR_ARR_SIZE_L2 };
<span class="keyword">enum</span> { TRIGO_BD <span class="operator">=</span> ((FFT_LEN_L2 <span class="operator">-</span> TRIGO_BD_LIMIT) <span class="operator"><</span> <span class="number">0</span>)
<span class="operator">?</span> (<span class="type">int</span>)FFT_LEN_L2
: (<span class="type">int</span>)TRIGO_BD_LIMIT };
<span class="keyword">enum</span> { TRIGO_TABLE_ARR_SIZE_L2 <span class="operator">=</span> (LL2 <span class="operator"><</span> <span class="number">4</span>) <span class="operator">?</span> <span class="number">0</span> : (TRIGO_BD <span class="operator">-</span> <span class="number">2</span>) };
<span class="keyword">enum</span> { TRIGO_TABLE_ARR_SIZE <span class="operator">=</span> <span class="number">1</span> <span class="operator"><</span><span class="operator"><</span> TRIGO_TABLE_ARR_SIZE_L2 };
<span class="keyword">enum</span> { NBR_TRIGO_OSC <span class="operator">=</span> FFT_LEN_L2 <span class="operator">-</span> TRIGO_BD };
<span class="keyword">enum</span> { TRIGO_OSC_ARR_SIZE <span class="operator">=</span> (NBR_TRIGO_OSC <span class="operator">></span> <span class="number">0</span>) <span class="operator">?</span> NBR_TRIGO_OSC : <span class="number">1</span> };
<span class="type">void</span> build_br_lut ();
<span class="type">void</span> build_trigo_lut ();
<span class="type">void</span> build_trigo_osc ();
DynArray <span class="operator"><</span>DataType<span class="operator">></span>
_buffer;
DynArray <span class="operator"><</span><span class="type">long</span><span class="operator">></span>
_br_data;
DynArray <span class="operator"><</span>DataType<span class="operator">></span>
_trigo_data;
Array <span class="operator"><</span>OscType<span class="operator">,</span> TRIGO_OSC_ARR_SIZE<span class="operator">></span>
_trigo_osc;
<span class="comment">/*\\\ FORBIDDEN MEMBER FUNCTIONS \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span>
<span class="keyword">private</span>:
FFTRealFixLen (<span class="keyword">const</span> FFTRealFixLen <span class="operator">&</span>other);
FFTRealFixLen<span class="operator">&</span> <span class="keyword">operator</span> <span class="operator">=</span> (<span class="keyword">const</span> FFTRealFixLen <span class="operator">&</span>other);
bool <span class="keyword">operator</span> <span class="operator">=</span><span class="operator">=</span> (<span class="keyword">const</span> FFTRealFixLen <span class="operator">&</span>other);
bool <span class="keyword">operator</span> <span class="operator">!</span><span class="operator">=</span> (<span class="keyword">const</span> FFTRealFixLen <span class="operator">&</span>other);
}; <span class="comment">// class FFTRealFixLen</span>
<span class="preprocessor">#include "FFTRealFixLen.hpp"</span>
<span class="preprocessor">#endif // FFTRealFixLen_HEADER_INCLUDED</span>
<span class="comment">/*\\\ EOF \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\*/</span>
</pre>
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<!-- @@@multimedia/spectrum/3rdparty/fftreal/FFTRealFixLen.h -->
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