/* -*- c++ -*- */

/*

 * Copyright 2002 Free Software Foundation, Inc.

 * 

 * This file is part of GNU Radio

 * 

 * GNU Radio is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 3, or (at your option)

 * any later version.

 * 

 * GNU Radio is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License

 * along with GNU Radio; see the file COPYING.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street,

 * Boston, MA 02110-1301, USA.

 */

#ifndef _GR_FIR_FSF_SIMD_H_

#define _GR_FIR_FSF_SIMD_H_

#include <gr_fir_fsf_generic.h>

/*!

 * \brief common base class for SIMD versions of gr_fir_fsf

 * \ingroup filter_primitive

 *

 * This base class handles alignment issues common to SSE and 3DNOW

 * subclasses.

 */

class gr_fir_fsf_simd : public gr_fir_fsf_generic

{

protected:

  typedef float (*float_dotprod_t)(const float *input,

                                   const float *taps,

                                   unsigned n_4_float_blocks);

  /*!

   * \p aligned_taps holds 4 copies of the coefficients preshifted

   * by 0, 1, 2, or 3 floats to meet all possible input data alignments.

   * This allows us to always fetch data and taps that are 128-bit aligned.

   */

  float                 *d_aligned_taps[4];

  float_dotprod_t        d_float_dotprod;         // fast dot product primitive

public:

  // CREATORS

  gr_fir_fsf_simd ();

  gr_fir_fsf_simd (const std::vector<float> &taps);

  ~gr_fir_fsf_simd ();

  // MANIPULATORS

  virtual void set_taps (const std::vector<float> &taps);

  virtual short filter (const float input[]);

};

#endif