GNU Radio 3.6.3 C++ API
gr_fir_scc_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_SCC_SIMD_H
23 #define INCLUDED_GR_FIR_SCC_SIMD_H
24 
25 #include <gr_core_api.h>
26 #include <gr_fir_scc_generic.h>
27 
28 
29 /*!
30  * \brief common base class for SIMD versions of gr_fir_scc
31  * \ingroup filter_primitive
32  *
33  * This base class handles alignment issues common to SSE and 3DNOW
34  * subclasses.
35  */
36 class GR_CORE_API gr_fir_scc_simd : public gr_fir_scc_generic
37 {
38 protected:
39  typedef void (*complex_dotprod_t)(const short *input,
40  const float *taps,
41  unsigned n_2_complex_blocks,
42  float *result);
43 
44  /*!
45  * \p aligned_taps holds 4 copies of the coefficients preshifted
46  * by 0, 1, 2, or 3 float pairs to meet all possible input data alignments.
47  * This allows us to always fetch data and taps that are 128-bit aligned.
48  */
49  float *d_aligned_taps[4];
50 
51  complex_dotprod_t d_complex_dotprod; // fast dot product primitive
52 
53 public:
54 
55  // CREATORS
56  gr_fir_scc_simd ();
57  gr_fir_scc_simd (const std::vector<gr_complex> &taps);
58  ~gr_fir_scc_simd ();
59 
60  // MANIPULATORS
61  virtual void set_taps (const std::vector<gr_complex> &taps);
62  virtual gr_complex filter (const short input[]);
63 };
64 
65 #endif