quad_demod_volk_impl.h

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 * DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 * PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 * EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGES.
 * 
 *   17. Interpretation of Sections 15 and 16.
 * 
 *   If the disclaimer of warranty and limitation of liability provided
 * above cannot be given local legal effect according to their terms,
 * reviewing courts shall apply local law that most closely approximates
 * an absolute waiver of all civil liability in connection with the
 * Program, unless a warranty or assumption of liability accompanies a
 * copy of the Program in return for a fee.
 * 
 *                      END OF TERMS AND CONDITIONS
 * 
 *             How to Apply These Terms to Your New Programs
 * 
 *   If you develop a new program, and you want it to be of the greatest
 * possible use to the public, the best way to achieve this is to make it
 * free software which everyone can redistribute and change under these terms.
 * 
 *   To do so, attach the following notices to the program.  It is safest
 * to attach them to the start of each source file to most effectively
 * state the exclusion of warranty; and each file should have at least
 * the "copyright" line and a pointer to where the full notice is found.
 * 
 *     {one line to give the program's name and a brief idea of what it does.}
 *     Copyright (C) {year}  {name of author}
 * 
 *     This program 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 of the License, or
 *     (at your option) any later version.
 * 
 *     This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * Also add information on how to contact you by electronic and paper mail.
 * 
 *   If the program does terminal interaction, make it output a short
 * notice like this when it starts in an interactive mode:
 * 
 *     {project}  Copyright (C) {year}  {fullname}
 *     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
 *     This is free software, and you are welcome to redistribute it
 *     under certain conditions; type `show c' for details.
 * 
 * The hypothetical commands `show w' and `show c' should show the appropriate
 * parts of the General Public License.  Of course, your program's commands
 * might be different; for a GUI interface, you would use an "about box".
 * 
 *   You should also get your employer (if you work as a programmer) or school,
 * if any, to sign a "copyright disclaimer" for the program, if necessary.
 * For more information on this, and how to apply and follow the GNU GPL, see
 * <http://www.gnu.org/licenses/>.
 * 
 *   The GNU General Public License does not permit incorporating your program
 * into proprietary programs.  If your program is a subroutine library, you
 * may consider it more useful to permit linking proprietary applications with
 * the library.  If this is what you want to do, use the GNU Lesser General
 * Public License instead of this License.  But first, please read
 * <http://www.gnu.org/philosophy/why-not-lgpl.html>.
 */

#ifndef INCLUDED_LFAST_QUAD_DEMOD_VOLK_IMPL_H
#define INCLUDED_LFAST_QUAD_DEMOD_VOLK_IMPL_H

#include <lfast/quad_demod_volk.h>

namespace gr {
  namespace lfast {

    class quad_demod_volk_impl : public quad_demod_volk
    {
     private:
      // Nothing to declare in this block.
        float d_gain;
        float d_inv_gain;

     public:
      quad_demod_volk_impl(float gain);
      ~quad_demod_volk_impl();

      void set_gain(float gain) { d_gain = gain; d_inv_gain = 1.0 / gain; }
      float gain() const { return d_gain; }

      // For testing/timing:
      int work_original(int noutput_items,
         gr_vector_const_void_star &input_items,
         gr_vector_void_star &output_items);
      int work_test(int noutput_items,
          gr_vector_const_void_star &input_items,
          gr_vector_void_star &output_items);


      // Where all the action really happens
      int work(int noutput_items,
         gr_vector_const_void_star &input_items,
         gr_vector_void_star &output_items);
    };

  } // namespace lfast
} // namespace gr

#endif /* INCLUDED_LFAST_QUAD_DEMOD_VOLK_IMPL_H */