3 * Copyright 2002 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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)
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.
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.
22 #ifndef INCLUDED_GR_FIR_FFF_SIMD_H
23 #define INCLUDED_GR_FIR_FFF_SIMD_H
25 #include <gr_fir_fff_generic.h>
28 * \brief common base class for SIMD versions of gr_fir_fff
29 * \ingroup filter_primitive
31 * This base class handles alignment issues common to SSE and 3DNOW
35 class gr_fir_fff_simd : public gr_fir_fff_generic
38 typedef float (*float_dotprod_t)(const float *input,
40 unsigned n_4_float_blocks);
43 * \p aligned_taps holds 4 copies of the coefficients preshifted
44 * by 0, 1, 2, or 3 floats to meet all possible input data alignments.
45 * This allows us to always fetch data and taps that are 128-bit aligned.
47 float *d_aligned_taps[4];
49 float_dotprod_t d_float_dotprod; // fast dot product primitive
55 gr_fir_fff_simd (const std::vector<float> &taps);
59 virtual void set_taps (const std::vector<float> &taps);
60 virtual float filter (const float input[]);