gr-baz Package
gr_fir_fff_simd.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2002 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
7  * GNU Radio is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 3, or (at your option)
10  * any later version.
11  *
12  * GNU Radio is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with GNU Radio; see the file COPYING. If not, write to
19  * the Free Software Foundation, Inc., 51 Franklin Street,
20  * Boston, MA 02110-1301, USA.
21  */
22 #ifndef INCLUDED_GR_FIR_FFF_SIMD_H
23 #define INCLUDED_GR_FIR_FFF_SIMD_H
24 
25 #include <gr_core_api.h>
26 #include <gr_fir_fff_generic.h>
27 
28 /*!
29  * \brief common base class for SIMD versions of gr_fir_fff
30  * \ingroup filter_primitive
31  *
32  * This base class handles alignment issues common to SSE and 3DNOW
33  * subclasses.
34  */
35 
37 {
38 protected:
39  typedef float (*float_dotprod_t)(const float *input,
40  const float *taps,
41  unsigned n_4_float_blocks);
42 
43  /*!
44  * \p aligned_taps holds 4 copies of the coefficients preshifted
45  * by 0, 1, 2, or 3 floats to meet all possible input data alignments.
46  * This allows us to always fetch data and taps that are 128-bit aligned.
47  */
48  float *d_aligned_taps[4];
49 
50  float_dotprod_t d_float_dotprod; // fast dot product primitive
51 
52 public:
53 
54  // CREATORS
55  gr_fir_fff_simd ();
56  gr_fir_fff_simd (const std::vector<float> &taps);
57  ~gr_fir_fff_simd ();
58 
59  // MANIPULATORS
60  virtual void set_taps (const std::vector<float> &taps);
61  virtual float filter (const float input[]);
62 };
63 
64 #endif