GNU Radio 3.5.1 C++ API
gr_fir_fcc_simd.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2002 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 #ifndef INCLUDED_GR_FIR_FCC_SIMD_H
00023 #define INCLUDED_GR_FIR_FCC_SIMD_H
00024 
00025 #include <gr_core_api.h>
00026 #include <gr_fir_fcc_generic.h>
00027 
00028 
00029 /*!
00030  * \brief common base class for SIMD versions of gr_fir_fcc
00031  * \ingroup filter_primitive
00032  *
00033  * This base class handles alignment issues common to SSE and 3DNOW
00034  * subclasses.
00035  */
00036 
00037 class GR_CORE_API gr_fir_fcc_simd : public gr_fir_fcc_generic
00038 {
00039 protected:
00040   typedef void (*fcomplex_dotprod_t)(const float *input,
00041                                      const float *taps,
00042                                      unsigned n_2_complex_blocks,
00043                                      float *result);
00044 
00045   /*!
00046    * \p aligned_taps holds 4 copies of the coefficients preshifted
00047    * by 0, 1, 2, or 3 float pairs to meet all possible input data alignments.
00048    * This allows us to always fetch data and taps that are 128-bit aligned.
00049    */
00050   float                 *d_aligned_taps[4];
00051 
00052   fcomplex_dotprod_t    d_fcomplex_dotprod;     // fast dot product primitive
00053 
00054 public:
00055 
00056   // CREATORS
00057   gr_fir_fcc_simd ();
00058   gr_fir_fcc_simd (const std::vector<gr_complex> &taps);
00059   ~gr_fir_fcc_simd ();
00060 
00061   // MANIPULATORS
00062   virtual void set_taps (const std::vector<gr_complex> &taps);
00063   virtual gr_complex filter (const float input[]);
00064 };
00065 
00066 #endif