GNU Radio 3.5.3.2 C++ API
gr_fir_fsf_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 _GR_FIR_FSF_SIMD_H_
00023 #define _GR_FIR_FSF_SIMD_H_
00024 
00025 #include <gr_core_api.h>
00026 #include <gr_fir_fsf_generic.h>
00027 
00028 /*!
00029  * \brief common base class for SIMD versions of gr_fir_fsf
00030  * \ingroup filter_primitive
00031  *
00032  * This base class handles alignment issues common to SSE and 3DNOW
00033  * subclasses.
00034  */
00035 
00036 class GR_CORE_API gr_fir_fsf_simd : public gr_fir_fsf_generic
00037 {
00038 protected:
00039   typedef float (*float_dotprod_t)(const float *input,
00040                                    const float *taps,
00041                                    unsigned n_4_float_blocks);
00042 
00043   /*!
00044    * \p aligned_taps holds 4 copies of the coefficients preshifted
00045    * by 0, 1, 2, or 3 floats to meet all possible input data alignments.
00046    * This allows us to always fetch data and taps that are 128-bit aligned.
00047    */
00048   float                 *d_aligned_taps[4];
00049 
00050   float_dotprod_t       d_float_dotprod;        // fast dot product primitive
00051 
00052 public:
00053 
00054   // CREATORS
00055   gr_fir_fsf_simd ();
00056   gr_fir_fsf_simd (const std::vector<float> &taps);
00057   ~gr_fir_fsf_simd ();
00058 
00059   // MANIPULATORS
00060   virtual void set_taps (const std::vector<float> &taps);
00061   virtual short filter (const float input[]);
00062 };
00063 
00064 #endif